Files

Leetcode Problems
- Easy
  - 1-Two-Sum.py
  - 1025-Divisor-Game.py
  - 104-Maximum-Depth-of-Binary-Tree.py
  - 1051-Height-Checker.py
  - 1089-Duplicate-Zeros.py
  - 1108-Defanging-an-IP-Address.py
  - 1119-Remove-Vowels-from-a-String.py
  - 118-Pascal's-Triangle.py
  - 1207-Unique-Number-of-Occurrences.py
  - 121-Best-Time-to-Buy-and-Sell-Stock.py
  - 125-Valid-Palindrome.py
  - 1275-Find-Winner-on-a-Tic-Tac-Toe-Game.py
  - 1290-Convert-Binary-Number-in-a-Linked-List-to-Integer.py
  - 1295-Find-Numbers-with-Even-Number-of-Digits.py
  - 1299-Replace-Elements-with-Greatest-Element-on-Right-Side.py
  - 13-Roman-to-Integer.py
  - 1332-Remove-Palindromic-Subsequences.py
  - 1346-Check-If-N-and-Its-Double-Exist.py
  - 1365-How-Many-Numbers-Are-Smaller-Than-the-Current-Number.py
  - 1370-Increasing-Decreasing-String.py
  - 14-Longest-Common-Prefix.py
  - 1413-Minimum-Value-to-Get-Positive-Step-by-Step-Sum.py
  - 1431-Kids-With-the-Greatest-Number-of-Candies.py
  - 144-Binary-Tree-Preorder-Traversal.py
  - 145-Binary-Tree-Postorder-Traversal.py
  - 1470-Shuffle-the-Array.py
  - 1480-Running-Sum-of-1d-Array.py
  - 1512-Number-of-Good-Pairs.py
  - 1523-Count-Odd-Numbers-in-an-Interval-Range.py
  - 1528-Shuffle-String.py
  - 1603-Design-Parking-System.py
  - 1629-Slowest-Key.py
  - 167-Two-Sum-II-Input-Array-Is-Sorted.py
  - 1672-Richest-Customer-Wealth.py
  - 169-Majority-Element.py
  - 1710-Maximum-Units-on-a-Truck.py
  - 1768-Merge-Strings-Alternately.py
  - 1812-Determine-Color-of-a-Chessboard-Square.py
  - 1920-Build-Array-from-Permutation.py
  - 1929-Concatenation-of-Array.py
  - 20-Valid-Parentheses.py
  - 2011-Final-Value-of-Variable-After-Performing-Operations.py
  - 206-Reverse-Linked-List.py
  - 2068-Check-Whether-Two-Strings-are-Almost-Equivalent.py
  - 21-Merge-Two-Sorted-Lists.py
  - 2114-Maximum-Number-of-Words-Found-in-Sentences.py
  - 217-Contains-Duplicate.py
  - 2206-Divide-Array-Into-Equal-Pairs.py
  - 2235-Add-Two-Integers.py
  - 2248-Intersection-of-Multiple-Arrays.py
  - 225-Implement-Stack-using-Queues.py
  - 2283-Check-if-Number-Has-Equal-Digit-Count-and-Digit-Value.py
  - 234-Palindrome-Linked-List.py
  - 242-Valid-Anagram.py
  - 26-Remove-Duplicates-from-Sorted-Array.py
  - 2620-Counter.js
  - 2665-Counter-II.js
  - 2667-Create-Hello-World-Function.js
  - 27-Remove-Element.py
  - 2704-To-Be-Or-Not-To-Be.js
  - 278-First-Bad-Version.py
  - 283-Move-Zeros.py
  - 326-Power-of-Three.py
  - 338-Counting-Bits.py
  - 344-Reverse-String.py
  - 346-Moving-Average-from-Data-Stream.py
  - 349-Intersection-of-Two-Arrays.py
  - 35-Search-Insert-Position.py
  - 359-Logger-Rate-Limiter.py
  - 383-Ransom-Note.py
  - 387-First-Unique-Character-in-a-String.py
  - 408-Valid-Word-Abbreviation.py
  - 412-Fizz-Buzz.py
  - 414-Third-Maximum-Number.py
  - 448-Find-All-Numbers-Disappeared-in-an-Array.py
  - 459-Repeated-Substring-Pattern.py
  - 485-Max-Consecutive-Ones.py
  - 509-Fibonacci-Number.py
  - 53-Maximum-Subarray.py
  - 557-Reverse-Words-in-a-String-III.py
  - 595-Big-Countries.sql
  - 680-Valid-Palindrome-II.py
  - 70-Climbing-Stairs.py
  - 704-Binary.py
  - 706-Design-HashMap.py
  - 724-Find-Pivot-Index.py
  - 771-Jewels-and-Stones.py
  - 867-Transpose-Matrix.py
  - 88-Merge-Sorted-Array.py
  - 9-Palindrome-Number.py
  - 905-Sort-Array-By-Parity.py
  - 94-Binary-Tree-Inorder-Traversal.py
  - 941-Valid-Mountain-Array.py
  - 977-Squares-of-a-Sorted-Array.py
- Hard
- Medium
Practice Concepts
Resources
extras
README.md

Easy

Name		Name	Last commit message	Last commit date
parent directory ..
1-Two-Sum.py		1-Two-Sum.py
1025-Divisor-Game.py		1025-Divisor-Game.py
104-Maximum-Depth-of-Binary-Tree.py		104-Maximum-Depth-of-Binary-Tree.py
1051-Height-Checker.py		1051-Height-Checker.py
1089-Duplicate-Zeros.py		1089-Duplicate-Zeros.py
1108-Defanging-an-IP-Address.py		1108-Defanging-an-IP-Address.py
1119-Remove-Vowels-from-a-String.py		1119-Remove-Vowels-from-a-String.py
118-Pascal's-Triangle.py		118-Pascal's-Triangle.py
1207-Unique-Number-of-Occurrences.py		1207-Unique-Number-of-Occurrences.py
121-Best-Time-to-Buy-and-Sell-Stock.py		121-Best-Time-to-Buy-and-Sell-Stock.py
125-Valid-Palindrome.py		125-Valid-Palindrome.py
1275-Find-Winner-on-a-Tic-Tac-Toe-Game.py		1275-Find-Winner-on-a-Tic-Tac-Toe-Game.py
1290-Convert-Binary-Number-in-a-Linked-List-to-Integer.py		1290-Convert-Binary-Number-in-a-Linked-List-to-Integer.py
1295-Find-Numbers-with-Even-Number-of-Digits.py		1295-Find-Numbers-with-Even-Number-of-Digits.py
1299-Replace-Elements-with-Greatest-Element-on-Right-Side.py		1299-Replace-Elements-with-Greatest-Element-on-Right-Side.py
13-Roman-to-Integer.py		13-Roman-to-Integer.py
1332-Remove-Palindromic-Subsequences.py		1332-Remove-Palindromic-Subsequences.py
1346-Check-If-N-and-Its-Double-Exist.py		1346-Check-If-N-and-Its-Double-Exist.py
1365-How-Many-Numbers-Are-Smaller-Than-the-Current-Number.py		1365-How-Many-Numbers-Are-Smaller-Than-the-Current-Number.py
1370-Increasing-Decreasing-String.py		1370-Increasing-Decreasing-String.py
14-Longest-Common-Prefix.py		14-Longest-Common-Prefix.py
1413-Minimum-Value-to-Get-Positive-Step-by-Step-Sum.py		1413-Minimum-Value-to-Get-Positive-Step-by-Step-Sum.py
1431-Kids-With-the-Greatest-Number-of-Candies.py		1431-Kids-With-the-Greatest-Number-of-Candies.py
144-Binary-Tree-Preorder-Traversal.py		144-Binary-Tree-Preorder-Traversal.py
145-Binary-Tree-Postorder-Traversal.py		145-Binary-Tree-Postorder-Traversal.py
1470-Shuffle-the-Array.py		1470-Shuffle-the-Array.py
1480-Running-Sum-of-1d-Array.py		1480-Running-Sum-of-1d-Array.py
1512-Number-of-Good-Pairs.py		1512-Number-of-Good-Pairs.py
1523-Count-Odd-Numbers-in-an-Interval-Range.py		1523-Count-Odd-Numbers-in-an-Interval-Range.py
1528-Shuffle-String.py		1528-Shuffle-String.py
1603-Design-Parking-System.py		1603-Design-Parking-System.py
1629-Slowest-Key.py		1629-Slowest-Key.py
167-Two-Sum-II-Input-Array-Is-Sorted.py		167-Two-Sum-II-Input-Array-Is-Sorted.py
1672-Richest-Customer-Wealth.py		1672-Richest-Customer-Wealth.py
169-Majority-Element.py		169-Majority-Element.py
1710-Maximum-Units-on-a-Truck.py		1710-Maximum-Units-on-a-Truck.py
1768-Merge-Strings-Alternately.py		1768-Merge-Strings-Alternately.py
1812-Determine-Color-of-a-Chessboard-Square.py		1812-Determine-Color-of-a-Chessboard-Square.py
1920-Build-Array-from-Permutation.py		1920-Build-Array-from-Permutation.py
1929-Concatenation-of-Array.py		1929-Concatenation-of-Array.py
20-Valid-Parentheses.py		20-Valid-Parentheses.py
2011-Final-Value-of-Variable-After-Performing-Operations.py		2011-Final-Value-of-Variable-After-Performing-Operations.py
206-Reverse-Linked-List.py		206-Reverse-Linked-List.py
2068-Check-Whether-Two-Strings-are-Almost-Equivalent.py		2068-Check-Whether-Two-Strings-are-Almost-Equivalent.py
21-Merge-Two-Sorted-Lists.py		21-Merge-Two-Sorted-Lists.py
2114-Maximum-Number-of-Words-Found-in-Sentences.py		2114-Maximum-Number-of-Words-Found-in-Sentences.py
217-Contains-Duplicate.py		217-Contains-Duplicate.py
2206-Divide-Array-Into-Equal-Pairs.py		2206-Divide-Array-Into-Equal-Pairs.py
2235-Add-Two-Integers.py		2235-Add-Two-Integers.py
2248-Intersection-of-Multiple-Arrays.py		2248-Intersection-of-Multiple-Arrays.py
225-Implement-Stack-using-Queues.py		225-Implement-Stack-using-Queues.py
2283-Check-if-Number-Has-Equal-Digit-Count-and-Digit-Value.py		2283-Check-if-Number-Has-Equal-Digit-Count-and-Digit-Value.py
234-Palindrome-Linked-List.py		234-Palindrome-Linked-List.py
242-Valid-Anagram.py		242-Valid-Anagram.py
26-Remove-Duplicates-from-Sorted-Array.py		26-Remove-Duplicates-from-Sorted-Array.py
2620-Counter.js		2620-Counter.js
2665-Counter-II.js		2665-Counter-II.js
2667-Create-Hello-World-Function.js		2667-Create-Hello-World-Function.js
27-Remove-Element.py		27-Remove-Element.py
2704-To-Be-Or-Not-To-Be.js		2704-To-Be-Or-Not-To-Be.js
278-First-Bad-Version.py		278-First-Bad-Version.py
283-Move-Zeros.py		283-Move-Zeros.py
326-Power-of-Three.py		326-Power-of-Three.py
338-Counting-Bits.py		338-Counting-Bits.py
344-Reverse-String.py		344-Reverse-String.py
346-Moving-Average-from-Data-Stream.py		346-Moving-Average-from-Data-Stream.py
349-Intersection-of-Two-Arrays.py		349-Intersection-of-Two-Arrays.py
35-Search-Insert-Position.py		35-Search-Insert-Position.py
359-Logger-Rate-Limiter.py		359-Logger-Rate-Limiter.py
383-Ransom-Note.py		383-Ransom-Note.py
387-First-Unique-Character-in-a-String.py		387-First-Unique-Character-in-a-String.py
408-Valid-Word-Abbreviation.py		408-Valid-Word-Abbreviation.py
412-Fizz-Buzz.py		412-Fizz-Buzz.py
414-Third-Maximum-Number.py		414-Third-Maximum-Number.py
448-Find-All-Numbers-Disappeared-in-an-Array.py		448-Find-All-Numbers-Disappeared-in-an-Array.py
459-Repeated-Substring-Pattern.py		459-Repeated-Substring-Pattern.py
485-Max-Consecutive-Ones.py		485-Max-Consecutive-Ones.py
509-Fibonacci-Number.py		509-Fibonacci-Number.py
53-Maximum-Subarray.py		53-Maximum-Subarray.py
557-Reverse-Words-in-a-String-III.py		557-Reverse-Words-in-a-String-III.py
595-Big-Countries.sql		595-Big-Countries.sql
680-Valid-Palindrome-II.py		680-Valid-Palindrome-II.py
70-Climbing-Stairs.py		70-Climbing-Stairs.py
704-Binary.py		704-Binary.py
706-Design-HashMap.py		706-Design-HashMap.py
724-Find-Pivot-Index.py		724-Find-Pivot-Index.py
771-Jewels-and-Stones.py		771-Jewels-and-Stones.py
867-Transpose-Matrix.py		867-Transpose-Matrix.py
88-Merge-Sorted-Array.py		88-Merge-Sorted-Array.py
9-Palindrome-Number.py		9-Palindrome-Number.py
905-Sort-Array-By-Parity.py		905-Sort-Array-By-Parity.py
94-Binary-Tree-Inorder-Traversal.py		94-Binary-Tree-Inorder-Traversal.py
941-Valid-Mountain-Array.py		941-Valid-Mountain-Array.py
977-Squares-of-a-Sorted-Array.py		977-Squares-of-a-Sorted-Array.py

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