7. Python 101 - Python Libraries for Data Analysis - Numpy Solution.ipynb

{"nbformat":4,"nbformat_minor":0,"metadata":{"colab":{"name":"7. Python 101 - Python Libraries for Data Analysis - Numpy Solution.ipynb","provenance":[],"collapsed_sections":[]},"kernelspec":{"name":"python3","display_name":"Python 3"}},"cells":[{"cell_type":"markdown","metadata":{"id":"f7yOpaRM5IbG","colab_type":"text"},"source":["# 1. NUMPY BASICS"]},{"cell_type":"code","metadata":{"id":"Bqk10u47qEmJ","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598026431247,"user_tz":240,"elapsed":525,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"6d0f8ddd-fcf1-4ca2-9531-cdd013622565"},"source":["# NumPy is a Linear Algebra Library used for multidimensional arrays\n","# NumPy brings the best of two worlds: (1) C/Fortran computational efficiency, (2) Python language easy syntax \n","import numpy as np \n","\n","# Let's define a one-dimensional array \n","my_list = [10, 20, 50, 60, 70]\n","my_list"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["[10, 20, 50, 60, 70]"]},"metadata":{"tags":[]},"execution_count":1}]},{"cell_type":"code","metadata":{"id":"b98d-lkK5NbQ","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598026434403,"user_tz":240,"elapsed":476,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"29441c2a-7312-40ab-b879-3768dfc9f581"},"source":["# Let's create a numpy array from the list \"my_list\"\n","x = np.array(my_list)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([10, 20, 50, 60, 70])"]},"metadata":{"tags":[]},"execution_count":2}]},{"cell_type":"code","metadata":{"id":"tljNDWBw5Nf9","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598026452462,"user_tz":240,"elapsed":433,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"5171039b-3bfe-4796-dfc7-5db17eb2cc2e"},"source":["type(x)"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["numpy.ndarray"]},"metadata":{"tags":[]},"execution_count":3}]},{"cell_type":"code","metadata":{"id":"wpiZ25fZ5NiN","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":50},"executionInfo":{"status":"ok","timestamp":1598026468861,"user_tz":240,"elapsed":482,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"c7d16231-d02d-4908-9d84-1236b8c202b8"},"source":["# Multi-dimensional (Matrix definition) \n","matrix = np.array([[5, 8], [9, 13]])\n","matrix"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[ 5,  8],\n","       [ 9, 13]])"]},"metadata":{"tags":[]},"execution_count":4}]},{"cell_type":"markdown","metadata":{"id":"tmB_S-JfHZRL","colab_type":"text"},"source":["**MINI CHALLENGE #1:** \n","- **Write a code that creates the following 2x4 numpy array**\n","\n","```\n","[[4 6 8 7] \n","[20 5 6 9]]\n","```"]},{"cell_type":"code","metadata":{"id":"Nabjzl1oKtGX","colab_type":"code","colab":{}},"source":[""],"execution_count":null,"outputs":[]},{"cell_type":"markdown","metadata":{"id":"uBuqdDQM6Qd9","colab_type":"text"},"source":["# 2. BUILT-IN METHODS AND FUNCTIONS "]},{"cell_type":"code","metadata":{"id":"yXQV-Nrg5No3","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":67},"executionInfo":{"status":"ok","timestamp":1598026506288,"user_tz":240,"elapsed":475,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"5237733f-68da-43a1-a25c-3671274bfd1a"},"source":["# \"rand()\" uniform distribution between 0 and 1\n","x = np.random.rand(15)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([0.98475074, 0.53306556, 0.61463326, 0.28477007, 0.04002875,\n","       0.15621395, 0.86488375, 0.63520737, 0.0468211 , 0.54911912,\n","       0.28300163, 0.80924416, 0.89277928, 0.32152287, 0.87232476])"]},"metadata":{"tags":[]},"execution_count":5}]},{"cell_type":"code","metadata":{"id":"PpJUCdB15NkT","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":101},"executionInfo":{"status":"ok","timestamp":1598026560564,"user_tz":240,"elapsed":439,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"c89e0cb1-e897-4ae6-c96b-1563c658c20f"},"source":["# you can create a matrix of random number as well\n","x = np.random.rand(5, 5)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[0.49074574, 0.58475799, 0.15213804, 0.38666711, 0.45441034],\n","       [0.02632571, 0.11825348, 0.80672613, 0.54514786, 0.9096982 ],\n","       [0.81895266, 0.58159222, 0.0219584 , 0.23833528, 0.09511582],\n","       [0.33876621, 0.13590125, 0.89913415, 0.48323514, 0.27027316],\n","       [0.24539314, 0.94063078, 0.88959053, 0.46376135, 0.77901524]])"]},"metadata":{"tags":[]},"execution_count":9}]},{"cell_type":"code","metadata":{"id":"7EzMNrrm6YHA","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":50},"executionInfo":{"status":"ok","timestamp":1598026564611,"user_tz":240,"elapsed":427,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"e148348b-1326-4e73-cde6-d3326b5062c6"},"source":["# \"randn()\" normal distribution between 0 and 1\n","x = np.random.randn(10)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([ 0.79693549, -0.33228416,  1.83975209,  1.22210988,  1.05852941,\n","       -0.03816669,  0.26132647, -1.48425968,  0.95475384,  2.0846148 ])"]},"metadata":{"tags":[]},"execution_count":10}]},{"cell_type":"code","metadata":{"id":"RBcU5xgb6YL0","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598026584111,"user_tz":240,"elapsed":413,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"c5bf0eeb-44f7-4d01-dfaf-9d3ef21a0c31"},"source":["# \"randint\" is used to generate random integers between upper and lower bounds\n","x = np.random.randint(1, 10)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["8"]},"metadata":{"tags":[]},"execution_count":12}]},{"cell_type":"code","metadata":{"id":"O3JdVtvo6YP7","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598026643201,"user_tz":240,"elapsed":360,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"ff2a258d-6e98-4383-a10e-a3a1325ea5b2"},"source":["# \"randint\" can be used to generate a certain number of random itegers as follows\n","x = np.random.randint(1, 100, 15)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([14, 27, 52, 73, 60, 17, 60,  1, 14, 17, 93,  5, 95, 67, 70])"]},"metadata":{"tags":[]},"execution_count":14}]},{"cell_type":"code","metadata":{"id":"EOOLMB416YUh","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":67},"executionInfo":{"status":"ok","timestamp":1598026648633,"user_tz":240,"elapsed":463,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"bb0d4be7-1ed0-44e8-80bb-a139d2bceb71"},"source":["# np.arange creates an evenly spaced values within a given interval\n","x = np.arange(1, 50)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([ 1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17,\n","       18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34,\n","       35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49])"]},"metadata":{"tags":[]},"execution_count":15}]},{"cell_type":"code","metadata":{"id":"Jz7eJuio6YY4","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598026653217,"user_tz":240,"elapsed":413,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"81e012e3-e3db-4b4b-a70c-a6ddf5eb0268"},"source":["# Create an evenly spaced values with a step of 5\n","x = np.arange(1, 50, 5)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([ 1,  6, 11, 16, 21, 26, 31, 36, 41, 46])"]},"metadata":{"tags":[]},"execution_count":16}]},{"cell_type":"code","metadata":{"id":"sft1flaM6YXF","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":101},"executionInfo":{"status":"ok","timestamp":1598026659940,"user_tz":240,"elapsed":428,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"4d82d2af-0943-4e05-92f4-112a4ab078d1"},"source":["# create a diagonal of ones and zeros everywhere else\n","x = np.eye(15)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[1., 0., 0., 0., 0.],\n","       [0., 1., 0., 0., 0.],\n","       [0., 0., 1., 0., 0.],\n","       [0., 0., 0., 1., 0.],\n","       [0., 0., 0., 0., 1.]])"]},"metadata":{"tags":[]},"execution_count":17}]},{"cell_type":"code","metadata":{"id":"zZgMftc96fZm","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598026670827,"user_tz":240,"elapsed":447,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"da793dc0-8ca4-4182-8149-e11f564eb3a0"},"source":["# Array of ones\n","x = np.ones(10)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1.])"]},"metadata":{"tags":[]},"execution_count":19}]},{"cell_type":"code","metadata":{"id":"VQ8fp8Qb6feB","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":269},"executionInfo":{"status":"ok","timestamp":1598026673247,"user_tz":240,"elapsed":429,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"d030f2cb-6339-4d2a-8ea0-467f02dfb2b6"},"source":["# Matrices of ones\n","x = np.ones((15, 15))\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.],\n","       [1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]])"]},"metadata":{"tags":[]},"execution_count":20}]},{"cell_type":"code","metadata":{"id":"TTROXKYo6YSn","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":67},"executionInfo":{"status":"ok","timestamp":1598026680567,"user_tz":240,"elapsed":234,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"ba7288e2-2ed5-411d-da07-0f7f3c315bac"},"source":["# Array of zeros\n","x = np.zeros(50)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,\n","       0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,\n","       0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.])"]},"metadata":{"tags":[]},"execution_count":22}]},{"cell_type":"markdown","metadata":{"id":"IGiQ87EjKzh-","colab_type":"text"},"source":["**MINI CHALLENGE #2:**\n","- **Write a code that takes in a number x from the user and creates a 1x20 array with random numbers ranging from 0 to x**"]},{"cell_type":"code","metadata":{"id":"xg1mPZKKML5j","colab_type":"code","colab":{}},"source":[""],"execution_count":null,"outputs":[]},{"cell_type":"markdown","metadata":{"id":"980PKtbu9Z0k","colab_type":"text"},"source":["# 3. SHAPE, LENGTH, TYPE, RESHAPE, AND MAX/MIN VALUES"]},{"cell_type":"code","metadata":{"id":"MIxxZhxSADVj","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027005291,"user_tz":240,"elapsed":450,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"214fbf0a-5456-4e0d-b4eb-8ce1d31f1329"},"source":["# Let's define a one-dimensional array \n","my_list = [-30, 4, 50, 60, 29, 15, 22, 90]\n","my_list\n","x = np.array(my_list)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([-30,   4,  50,  60,  29,  15,  22,  90])"]},"metadata":{"tags":[]},"execution_count":35}]},{"cell_type":"code","metadata":{"id":"O9mMBErG6YJr","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027006537,"user_tz":240,"elapsed":451,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"fde0dae6-e3ef-4289-9e88-c306a6425ace"},"source":["# Get Length of a numpy array\n","len(x)"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["8"]},"metadata":{"tags":[]},"execution_count":36}]},{"cell_type":"code","metadata":{"id":"fo3vYjNI9lGF","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027007557,"user_tz":240,"elapsed":348,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"af1b4cc9-196d-4aa7-d72a-683057ac9945"},"source":["# Get shape\n","x.shape"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["(8,)"]},"metadata":{"tags":[]},"execution_count":37}]},{"cell_type":"code","metadata":{"id":"fdkzRVuB9lR6","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027008484,"user_tz":240,"elapsed":515,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"75e75416-a94d-44a8-f28c-3e2fa4220a64"},"source":["# Obtain the datatype\n","matrix.dtype"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["dtype('int64')"]},"metadata":{"tags":[]},"execution_count":38}]},{"cell_type":"code","metadata":{"id":"GVnOSYnU9lLU","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":67},"executionInfo":{"status":"ok","timestamp":1598027009308,"user_tz":240,"elapsed":431,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"87cf204b-2378-4da7-bb51-e07da609f259"},"source":["# Reshape 1D array into a matrix\n","z = x.reshape(2,4)\n","print(x)\n","print(z)"],"execution_count":null,"outputs":[{"output_type":"stream","text":["[-30   4  50  60  29  15  22  90]\n","[[-30   4  50  60]\n"," [ 29  15  22  90]]\n"],"name":"stdout"}]},{"cell_type":"code","metadata":{"id":"zb1UVnsW9lI_","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027011016,"user_tz":240,"elapsed":438,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"208b6e6d-1043-4edc-e3f7-e66617fe8100"},"source":["# Obtain the maximum element (value)\n","x.max()"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["90"]},"metadata":{"tags":[]},"execution_count":40}]},{"cell_type":"code","metadata":{"id":"q1yArvkA-R5P","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027012034,"user_tz":240,"elapsed":456,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"58c5e662-2ad9-4642-ba53-adb22ab46a8c"},"source":["# Obtain the minimum element (value)\n","x.min()"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["-30"]},"metadata":{"tags":[]},"execution_count":41}]},{"cell_type":"code","metadata":{"id":"ehXgrFee-R3F","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027013103,"user_tz":240,"elapsed":443,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"0eb1cbaa-0822-4c47-9914-4750217b6b5e"},"source":["# Obtain the location of the max element\n","x.argmax()"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["7"]},"metadata":{"tags":[]},"execution_count":42}]},{"cell_type":"code","metadata":{"id":"EnaJTGEy-R0Y","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027014218,"user_tz":240,"elapsed":460,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"6d5bbe4c-4bd4-4282-87fb-a4ac3a5f0827"},"source":["# Obtain the location of the min element\n","x.argmin()"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["0"]},"metadata":{"tags":[]},"execution_count":43}]},{"cell_type":"markdown","metadata":{"id":"7LavgBBnIIJz","colab_type":"text"},"source":["**MINI CHALLENGE #3:**\n","- **Write a code that creates a 4x5 array inwhich numbers range between 300 and 500 such that the difference between elements is 10**"]},{"cell_type":"code","metadata":{"id":"CtwsbAQ6NGiN","colab_type":"code","colab":{}},"source":[""],"execution_count":null,"outputs":[]},{"cell_type":"markdown","metadata":{"id":"zQ-QhrsgM2x8","colab_type":"text"},"source":["**MINI CHALLENGE #4:**\n","- **Write a code that creates a 20x20 numpy array of random values that ranges from -1000 to 1000 and obtain the maximum, minimum, and mean values** "]},{"cell_type":"code","metadata":{"id":"PS3ofoabMb9V","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":118},"executionInfo":{"status":"ok","timestamp":1597848819070,"user_tz":240,"elapsed":611,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"cfe401a7-aeb6-463c-e54e-04fcd3564d35"},"source":[""],"execution_count":null,"outputs":[{"output_type":"stream","text":["[[8 3 3 9 6]\n"," [3 8 1 4 1]\n"," [3 6 2 1 5]\n"," [3 6 6 7 2]\n"," [6 9 1 8 6]]\n","1 9\n"],"name":"stdout"}]},{"cell_type":"markdown","metadata":{"id":"VRyk_VYQArV3","colab_type":"text"},"source":["# 4. MATHEMATICAL OPERATIONS"]},{"cell_type":"code","metadata":{"id":"vm-gmaQG-Vvd","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027357814,"user_tz":240,"elapsed":599,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"27258be3-3de6-4679-9dbf-b972d368c2a6"},"source":["# np.arange() returns an evenly spaced values within a given interval\n","x = np.arange(1, 10)\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([1, 2, 3, 4, 5, 6, 7, 8, 9])"]},"metadata":{"tags":[]},"execution_count":51}]},{"cell_type":"code","metadata":{"id":"yzC5WGBIAzNk","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027388921,"user_tz":240,"elapsed":420,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"f484313b-7eb0-4b53-a809-7114b418a332"},"source":["y = np.arange(1, 10)\n","y"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([1, 2, 3, 4, 5, 6, 7, 8, 9])"]},"metadata":{"tags":[]},"execution_count":55}]},{"cell_type":"code","metadata":{"id":"ED0OSzpw2p9R","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027414005,"user_tz":240,"elapsed":426,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"ab08c55e-5fb6-4701-cccc-69676029603f"},"source":["# Add 2 numpy arrays together\n","sum = x+y\n","sum"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([ 2,  4,  6,  8, 10, 12, 14, 16, 18])"]},"metadata":{"tags":[]},"execution_count":57}]},{"cell_type":"code","metadata":{"id":"TH6xTJcuAzK-","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027429464,"user_tz":240,"elapsed":409,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"5953a19a-6d59-4c71-9f9f-d5e9350900a5"},"source":["squared = x**2\n","squared"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([ 1,  4,  9, 16, 25, 36, 49, 64, 81])"]},"metadata":{"tags":[]},"execution_count":58}]},{"cell_type":"code","metadata":{"id":"A0T25q5bAzIw","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027449631,"user_tz":240,"elapsed":490,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"3d710c16-1d10-425b-b7c3-08f4ec63be9f"},"source":["sqrt = np.sqrt(squared)\n","sqrt"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([1., 2., 3., 4., 5., 6., 7., 8., 9.])"]},"metadata":{"tags":[]},"execution_count":60}]},{"cell_type":"code","metadata":{"id":"1HvrjH4fAzGd","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":67},"executionInfo":{"status":"ok","timestamp":1598027458892,"user_tz":240,"elapsed":335,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"0ce031ac-c4fe-4b7a-d2a1-0ebf5faa1529"},"source":["z = np.exp(y)\n","z"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([2.71828183e+00, 7.38905610e+00, 2.00855369e+01, 5.45981500e+01,\n","       1.48413159e+02, 4.03428793e+02, 1.09663316e+03, 2.98095799e+03,\n","       8.10308393e+03])"]},"metadata":{"tags":[]},"execution_count":61}]},{"cell_type":"markdown","metadata":{"id":"-mj5Mwc2MmY2","colab_type":"text"},"source":["**MINI CHALLENGE #5:**\n","- **Given the X and Y values below, obtain the distance between them**\n","\n","\n","```\n","X = [3, 20, 30]\n","Y = [4, 6, 7]\n","```"]},{"cell_type":"code","metadata":{"id":"LfvrGIb83zCA","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027909595,"user_tz":240,"elapsed":426,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"523bb184-661b-418c-be70-39119e22abcc"},"source":[""],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([ 5.        , 20.88061302, 30.8058436 ])"]},"metadata":{"tags":[]},"execution_count":71}]},{"cell_type":"markdown","metadata":{"id":"ZA-Yb20mCYLl","colab_type":"text"},"source":["# 5. SLICING AND INDEXING "]},{"cell_type":"code","metadata":{"id":"Bu6rhQ99BFCp","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598028063099,"user_tz":240,"elapsed":448,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"317a7aa3-95d1-4f4d-fc32-252f9438ee60"},"source":["x = np.array([20, 40, 50, 21, 15])\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([20, 40, 50, 21, 15])"]},"metadata":{"tags":[]},"execution_count":76}]},{"cell_type":"code","metadata":{"id":"9TuEXJxgCdi_","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598028069917,"user_tz":240,"elapsed":447,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"c815002a-1009-4516-ff3d-a0a762ef50ba"},"source":["# Access specific index from the numpy array\n","x[0]"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["20"]},"metadata":{"tags":[]},"execution_count":78}]},{"cell_type":"code","metadata":{"id":"EjisujRgCdh4","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598028098676,"user_tz":240,"elapsed":436,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"ccd890ba-d245-41df-8f64-370196a50f12"},"source":["# Starting from the first index 0 up until and NOT inlcluding the last element\n","x[0:3]"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([20, 40, 50])"]},"metadata":{"tags":[]},"execution_count":80}]},{"cell_type":"code","metadata":{"id":"1nWlP602Cdg3","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598028112470,"user_tz":240,"elapsed":463,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"808392cd-5fe1-4bf6-dd2e-466a42ffd8bc"},"source":["# Broadcasting, altering several values in a numpy array at once\n","x[0:2] = 10\n","x"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([10, 10, 10, 10, 10])"]},"metadata":{"tags":[]},"execution_count":82}]},{"cell_type":"code","metadata":{"id":"fVKbwHguCddn","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":101},"executionInfo":{"status":"ok","timestamp":1598028132718,"user_tz":240,"elapsed":492,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"966bcd20-2eda-4c60-dd0b-be36b71bfab2"},"source":["# Let's define a two dimensional numpy array\n","matrix = np.random.randint(1,10, (5, 5))\n","matrix"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[5, 3, 4, 2, 1],\n","       [9, 8, 1, 2, 3],\n","       [9, 2, 5, 2, 9],\n","       [8, 3, 3, 3, 8],\n","       [1, 1, 2, 1, 4]])"]},"metadata":{"tags":[]},"execution_count":84}]},{"cell_type":"code","metadata":{"id":"Ea7ukwEzCda-","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598028135101,"user_tz":240,"elapsed":439,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"65c5dbb6-43ee-4910-cf2d-6d2841023369"},"source":["# Get a row from a mtrix\n","matrix[2]"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([9, 2, 5, 2, 9])"]},"metadata":{"tags":[]},"execution_count":85}]},{"cell_type":"code","metadata":{"id":"8KJk10J8Ci8k","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598028148280,"user_tz":240,"elapsed":534,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"d533fa0a-9de0-4a2b-e5b0-1005a782ce5b"},"source":["# Get one element\n","matrix[0][2]"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["4"]},"metadata":{"tags":[]},"execution_count":86}]},{"cell_type":"code","metadata":{"id":"lWsIgHYRCi5e","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":67},"executionInfo":{"status":"ok","timestamp":1598028162197,"user_tz":240,"elapsed":479,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"705a737c-94b5-4a83-93ae-4b4f39acf551"},"source":["mini_matrix = matrix[:3]\n","mini_matrix"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[5, 3, 4, 2, 1],\n","       [9, 8, 1, 2, 3],\n","       [9, 2, 5, 2, 9]])"]},"metadata":{"tags":[]},"execution_count":87}]},{"cell_type":"code","metadata":{"id":"Gn7-PKS9Ci4c","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":67},"executionInfo":{"status":"ok","timestamp":1598028163400,"user_tz":240,"elapsed":395,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"237ba79b-381a-47b0-ccce-2fc3df4d3317"},"source":["mini_matrix = matrix[2:]\n","mini_matrix"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[9, 2, 5, 2, 9],\n","       [8, 3, 3, 3, 8],\n","       [1, 1, 2, 1, 4]])"]},"metadata":{"tags":[]},"execution_count":88}]},{"cell_type":"code","metadata":{"id":"MGap8pfACi1M","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":101},"executionInfo":{"status":"ok","timestamp":1598028164878,"user_tz":240,"elapsed":421,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"233cec5f-a167-46e8-859e-0877a96109aa"},"source":["mini_matrix = matrix[:, :2]\n","mini_matrix"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[5, 3],\n","       [9, 8],\n","       [9, 2],\n","       [8, 3],\n","       [1, 1]])"]},"metadata":{"tags":[]},"execution_count":89}]},{"cell_type":"code","metadata":{"id":"ANJFZWTdCdX9","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":101},"executionInfo":{"status":"ok","timestamp":1598028165921,"user_tz":240,"elapsed":302,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"d60e7a16-ae9f-4e23-cb90-63d9ce3a56b0"},"source":["mini_matrix = matrix[:, 2:]\n","mini_matrix"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[4, 2, 1],\n","       [1, 2, 3],\n","       [5, 2, 9],\n","       [3, 3, 8],\n","       [2, 1, 4]])"]},"metadata":{"tags":[]},"execution_count":90}]},{"cell_type":"markdown","metadata":{"id":"zgyFPV5R8dUS","colab_type":"text"},"source":["**MINI CHALLENGE #6:**\n","- **In the following matrix, replace the last row with -1**\n","- **Multiply the 2x2 matrix in the upper right corner by 2**\n","\n","\n","\n","```\n","X = [2 30 20 -2 -4]\n","    [3 4  40 -3 -2]\n","    [-3 4 -6 90 10]\n","    [25 45 34 22 12]\n","    [13 24 22 32 37]\n","```\n","\n"]},{"cell_type":"markdown","metadata":{"id":"juuMOEq7Col_","colab_type":"text"},"source":["# 6. ELEMENTS SELECTION (CONDITIONAL)"]},{"cell_type":"code","metadata":{"id":"UujCvuhMCt4K","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":101},"executionInfo":{"status":"ok","timestamp":1598028251687,"user_tz":240,"elapsed":522,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"8e605106-5cdf-4026-a3bc-1a9716e0a23a"},"source":["matrix = np.random.randint(1,10, (5, 5))\n","matrix"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[7, 5, 5, 6, 4],\n","       [6, 9, 6, 1, 3],\n","       [6, 6, 9, 7, 9],\n","       [2, 6, 3, 1, 9],\n","       [1, 9, 1, 4, 6]])"]},"metadata":{"tags":[]},"execution_count":91}]},{"cell_type":"code","metadata":{"id":"JBgJ8ugyCvht","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598028252674,"user_tz":240,"elapsed":475,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"19222d58-5192-41c0-9177-9700365640f8"},"source":["new_matrix = matrix[matrix>3]\n","new_matrix"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([7, 5, 5, 6, 4, 6, 9, 6, 6, 6, 9, 7, 9, 6, 9, 9, 4, 6])"]},"metadata":{"tags":[]},"execution_count":92}]},{"cell_type":"code","metadata":{"id":"TIQ-A7IBCvgl","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598028255328,"user_tz":240,"elapsed":501,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"339c27ed-4291-4e10-a1d6-0cc5857e1a93"},"source":["new_matrix = matrix[matrix%2==0]\n","new_matrix"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([6, 4, 6, 6, 6, 6, 2, 6, 4, 6])"]},"metadata":{"tags":[]},"execution_count":93}]},{"cell_type":"markdown","metadata":{"id":"39QiMh-W8ogs","colab_type":"text"},"source":["**MINI CHALLENGE #7:**\n","- **In the following matrix, replace negative elements by 0 and replace odd elements with 25**\n","\n","\n","```\n","X = [2 30 20 -2 -4]\n","    [3 4  40 -3 -2]\n","    [-3 4 -6 90 10]\n","    [25 45 34 22 12]\n","    [13 24 22 32 37]\n","```\n"]},{"cell_type":"code","metadata":{"id":"AbN-vySf9gen","colab_type":"code","colab":{}},"source":[""],"execution_count":null,"outputs":[]},{"cell_type":"markdown","metadata":{"id":"dakv7iPFgw7Y","colab_type":"text"},"source":["# EXCELLENT JOB!"]},{"cell_type":"markdown","metadata":{"id":"pNWQrMz6KnIF","colab_type":"text"},"source":["# MINI CHALLENGES SOLUTIONS"]},{"cell_type":"markdown","metadata":{"id":"6AMqSvtAKj6o","colab_type":"text"},"source":["**MINI CHALLENGE #1 SOLUTION:** \n","- **Write a code that creates the following 2x4 numpy array**\n","\n","```\n","[[4 6 8 7] \n","[20 5 6 9]]\n","```"]},{"cell_type":"code","metadata":{"id":"ivvFzDy-KlQP","colab_type":"code","colab":{}},"source":["x = np.array([[[4, 6, 8, 7] , [20, 5, 6, 9]]])\n","x"],"execution_count":null,"outputs":[]},{"cell_type":"markdown","metadata":{"colab_type":"text","id":"2GskzNkOMFu0"},"source":["**MINI CHALLENGE #2 SOLUTION:**\n","- **Write a code that takes in a number x from the user and creates a 1x20 array with random numbers ranging from 0 to x**"]},{"cell_type":"code","metadata":{"colab_type":"code","id":"0vnDfvwFMFu3","colab":{"base_uri":"https://localhost:8080/","height":67},"executionInfo":{"status":"ok","timestamp":1598026853681,"user_tz":240,"elapsed":4089,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"0a7008bb-7820-42a6-d942-6e5f22b38672"},"source":["x = int(input(\"Please enter a positive integer value: \"))\n","x = np.random.randint(1, x, 20)\n","x"],"execution_count":null,"outputs":[{"output_type":"stream","text":["Please enter a positive integer value: 1000\n"],"name":"stdout"},{"output_type":"execute_result","data":{"text/plain":["array([706, 600, 225, 324, 964, 965, 281, 559, 536, 764, 950, 514, 997,\n","        39, 402, 606, 659, 665,  73, 663])"]},"metadata":{"tags":[]},"execution_count":23}]},{"cell_type":"markdown","metadata":{"colab_type":"text","id":"LOVruiHdMRMd"},"source":["**MINI CHALLENGE #3 SOLUTION:**\n","- **Write a code that creates a 4x5 array inwhich numbers ranging between 300 and 500 such that the difference between elements is 10**"]},{"cell_type":"code","metadata":{"colab_type":"code","id":"WtSncbsHMRMg","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027077849,"user_tz":240,"elapsed":406,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"d3265408-28ab-49f3-f2bb-9e1d5b58c5a7"},"source":["x = np.arange(300, 500, 10)\n","x.shape"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["(20,)"]},"metadata":{"tags":[]},"execution_count":44}]},{"cell_type":"code","metadata":{"colab_type":"code","id":"2_8vFVF7MRMp","colab":{"base_uri":"https://localhost:8080/","height":84},"executionInfo":{"status":"ok","timestamp":1598027079056,"user_tz":240,"elapsed":517,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"b363dd22-82ed-4143-cc68-fa2430716b15"},"source":["x = x.reshape(4, 5)\n","print(x)"],"execution_count":null,"outputs":[{"output_type":"stream","text":["[[300 310 320 330 340]\n"," [350 360 370 380 390]\n"," [400 410 420 430 440]\n"," [450 460 470 480 490]]\n"],"name":"stdout"}]},{"cell_type":"markdown","metadata":{"id":"NSuiOFRx1pSY","colab_type":"text"},"source":["**MINI CHALLENGE #4 SOLUTION:**\n","- **Write a code that creates a 20x20 numpy array of random values that ranges from -1000 to 1000 and obtain the maximum, minimum, and mean values** "]},{"cell_type":"code","metadata":{"id":"445Vi21GMYS7","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":706},"executionInfo":{"status":"ok","timestamp":1598027248857,"user_tz":240,"elapsed":525,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"a561dc22-26ac-48ce-f62d-361a248e8bb5"},"source":["x = np.random.randint(-1000, 1000, (20, 20))\n","print(x)\n","print('The maximum value is: {} and the minimum value is:{}'.format(x.min(), x.max()))"],"execution_count":null,"outputs":[{"output_type":"stream","text":["[[-696  963  484 -788  940  206  144  -34 -251 -943  548 -693  441 -651\n","  -278 -564  805  734 -486 -419]\n"," [-788 -242  725  133  452  631  659  291 -118  233  280 -157   41    9\n","  -572 -950  127 -940 -554 -149]\n"," [ 125  904  -96  662 -840 -731  598  153  317  858 -504  829 -737  269\n","   908 -995  -53  482   89   34]\n"," [  35  469 -157 -981 -462 -669 -222   97  332  840  768  824 -935 -342\n","   153  987  914  129  409  350]\n"," [ 339  456 -475  184  984   89 -698 -926  779  967  868  329   55 -637\n","   290  805 -966 -399    2 -845]\n"," [  42 -861  556  147  -32 -645  927  220 -428  565  549  134  433  -11\n","  -403 -465 -559  874  755 -246]\n"," [ 625  768  759  352  214  985  366 -307 -514  496  611   82 -778 -220\n","  -174  646  363 -537  451  925]\n"," [ 476 -354  722  968 -358 -891 -957    9  566 -892  779    0 -853   96\n","   116  914 -801 -265  614  923]\n"," [ 828   91  111   72  987 -635    2 -342 -700  -90 -537  841  246  162\n","   174  630   22  734 -180 -786]\n"," [ 726 -194 -358  351  221 -199  591  656 -992  845 -245  271  877   89\n","   705 -820 -499  399 -714  424]\n"," [ 463  373 -900 -107 -138  866  663 -772   61  881  419 -668 -796 -248\n","   866 -517  111 -904   49  309]\n"," [ 335  967  247   -8 -648  135 -130  946  -22   29  939  397   29  349\n","   268   -4  308  170  953 -534]\n"," [-368  -84 -603 -851  -20  586 -370 -993  508 -422  114 -256  592 -785\n","   126 -467  864 -456  126 -799]\n"," [-723  498  280   -4 -117 -359 -291  145  704 -685  350 -737 -813 -298\n","   907  555    5 -956 -379  662]\n"," [ 900  984 -199 -275 -540 -115 -684 -459  781 -569  231  608  919  831\n","   919 -521  481 -199 -620 -148]\n"," [ 378 -227 -179  837   13 -450  444  -16 -142  599 -124 -326 -260  814\n","  -103 -916  479  -29 -562 -768]\n"," [ 474  153 -487  552  523 -274 -807 -341  530  830    0  949 -930 -623\n","   121  831  186  -67  566  591]\n"," [ 519 -707  463  413 -210 -622  867 -209 -299  930 -843  962 -444 -371\n","  -128 -782  903  874 -233  -26]\n"," [ 867  270  -12  320  160 -233  130  751 -635 -672    7  963 -726  553\n","   477 -165 -804 -830  174  195]\n"," [ 915  246 -986 -730 -432 -236  -76  -96  115 -660 -981 -921 -641 -756\n","   947   27 -849 -788 -249 -879]]\n","The maximum value is: -995 and the minimum value is:987\n"],"name":"stdout"}]},{"cell_type":"code","metadata":{"id":"tIVL0uEr4xsC","colab_type":"code","colab":{}},"source":[""],"execution_count":null,"outputs":[]},{"cell_type":"markdown","metadata":{"colab_type":"text","id":"s1p4WaNB4yFf"},"source":["**MINI CHALLENGE #5 SOLUTION:**\n","- **Given the X and Y values below, obtain the distance between them**\n","\n","\n","```\n","X = [3, 20, 30]\n","Y = [4, 6, 7]\n","```\n","\n","\n"]},{"cell_type":"code","metadata":{"colab_type":"code","id":"_GJmf2Pl4yFi","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598027988068,"user_tz":240,"elapsed":481,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"6aed42b8-e013-4461-e0ac-343555153b51"},"source":["X = np.array([3, 20, 30])\n","Y = np.array([4, 6, 7])\n","Z = np.sqrt(X**2 + Y**2)\n","Z"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([ 5.        , 20.88061302, 30.8058436 ])"]},"metadata":{"tags":[]},"execution_count":72}]},{"cell_type":"markdown","metadata":{"id":"EZ9i2CLm6Iuf","colab_type":"text"},"source":["**MINI CHALLENGE #6 SOLUTION:**\n","- **In the following matrix, replace the last row with -1**\n","- **Multiply the 2x2 matrix in the upper right corner by 2**\n","\n","\n","\n","```\n","X = [2 30 20 -2 -4]\n","    [3 4  40 -3 -2]\n","    [-3 4 -6 90 10]\n","    [25 45 34 22 12]\n","    [13 24 22 32 37]\n","```\n","\n","\n"]},{"cell_type":"code","metadata":{"id":"qB7S_wIx6Hsm","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":34},"executionInfo":{"status":"ok","timestamp":1598028573756,"user_tz":240,"elapsed":356,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"176ca693-b427-4447-cd56-6cef02f8cbca"},"source":["X = np.array([[2, 30, 20, -2, -4],\n","    [3, 4,  40, -3, -2],\n","    [-3, 4, -6, 90, 10],\n","    [25, 45, 34, 22, 12],\n","    [13, 24, 22, 32, 37]])\n"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["(5, 5)"]},"metadata":{"tags":[]},"execution_count":99}]},{"cell_type":"code","metadata":{"id":"y98hmGRe7Qtl","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":102},"executionInfo":{"status":"ok","timestamp":1598028590866,"user_tz":240,"elapsed":307,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"ef92bacd-6440-411d-c860-aa99fbb705fa"},"source":["X[4] = 0\n","X"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[ 2, 30, 20, -2, -4],\n","       [ 3,  4, 40, -3, -2],\n","       [-3,  4, -6, 90, 10],\n","       [25, 45, 34, 22, 12],\n","       [ 0,  0,  0,  0,  0]])"]},"metadata":{"tags":[]},"execution_count":101}]},{"cell_type":"code","metadata":{"id":"6pLZ5lF87UFs","colab_type":"code","colab":{}},"source":["X[:2, 3:]  = X[:2, 3:] * 2"],"execution_count":null,"outputs":[]},{"cell_type":"code","metadata":{"id":"WsqjANlB8Kva","colab_type":"code","colab":{"base_uri":"https://localhost:8080/","height":102},"executionInfo":{"status":"ok","timestamp":1598028844461,"user_tz":240,"elapsed":494,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"b49af189-fc66-4627-e781-4ce113cc6702"},"source":["X"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[ 2, 30, 20, -4, -8],\n","       [ 3,  4, 40, -6, -4],\n","       [-3,  4, -6, 90, 10],\n","       [25, 45, 34, 22, 12],\n","       [ 0,  0,  0,  0,  0]])"]},"metadata":{"tags":[]},"execution_count":108}]},{"cell_type":"markdown","metadata":{"colab_type":"text","id":"2oikl6JS9YUs"},"source":["**MINI CHALLENGE #7 SOLUTION:**\n","- **In the following matrix, replace negative elements by 0 and replace odd elements with 25**\n","\n","\n","```\n","X = [2 30 20 -2 -4]\n","    [3 4  40 -3 -2]\n","    [-3 4 -6 90 10]\n","    [25 45 34 22 12]\n","    [13 24 22 32 37]\n","```\n"]},{"cell_type":"code","metadata":{"colab_type":"code","id":"h105KzGr9YUu","colab":{"base_uri":"https://localhost:8080/","height":102},"executionInfo":{"status":"ok","timestamp":1598029110658,"user_tz":240,"elapsed":346,"user":{"displayName":"Stemplicity","photoUrl":"https://lh3.googleusercontent.com/a-/AOh14Gj2vCFt-bD5mPBhUWX0QA6xiBgoXQXtwUm2jgjaCg=s64","userId":"10668071569687886186"}},"outputId":"b5b352dd-e609-45f0-9571-73f25505b2b3"},"source":["X = np.array([[2, 30, 20, -2, -4],\n","    [3, 4,  40, -3, -2],\n","    [-3, 4, -6, 90, 10],\n","    [25, 45, 34, 22, 12],\n","    [13, 24, 22, 32, 37]])\n","\n","X[X%2==1] = 25\n","X[X<0] = 0\n","X"],"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([[ 2, 30, 20,  0,  0],\n","       [25,  4, 40, 25,  0],\n","       [25,  4,  0, 90, 10],\n","       [25, 25, 34, 22, 12],\n","       [25, 24, 22, 32, 25]])"]},"metadata":{"tags":[]},"execution_count":111}]}]}