0455-assign-cookies.rb

# frozen_string_literal: true

# 455. Assign Cookies
# Easy
# https://leetcode.com/problems/assign-cookies

=begin
Assume you are an awesome parent and want to give your children some cookies. But, you should give each child at most one cookie.
Each child i has a greed factor g[i], which is the minimum size of a cookie that the child will be content with; and each cookie j has a size s[j]. If s[j] >= g[i], we can assign the cookie j to the child i, and the child i will be content. Your goal is to maximize the number of your content children and output the maximum number.

Example 1:
Input: g = [1,2,3], s = [1,1]
Output: 1
Explanation: You have 3 children and 2 cookies. The greed factors of 3 children are 1, 2, 3.
And even though you have 2 cookies, since their size is both 1, you could only make the child whose greed factor is 1 content.
You need to output 1.

Example 2:
Input: g = [1,2], s = [1,2,3]
Output: 2
Explanation: You have 2 children and 3 cookies. The greed factors of 2 children are 1, 2.
You have 3 cookies and their sizes are big enough to gratify all of the children,
You need to output 2.
=end

# @param {Integer[]} g
# @param {Integer[]} s
# @return {Integer}
def find_content_children(g, s)
  count = 0

  g.sort!
  s.sort!

  s.each do |cookie|
    if count < g.size && cookie >= g[count]
      count += 1
    end
  end

  count
end

# **************** #
#       TEST       #
# **************** #

require "test/unit"
class Test_find_content_children < Test::Unit::TestCase
  def test_
    assert_equal 1, find_content_children([1, 2, 3], [1, 1])
    assert_equal 2, find_content_children([1, 2], [1, 2, 3])
  end
end