Greedy

• https://leetcode.com/discuss/study-guide/5330283/Mastering-Greedy-Algorithms-with-LeetCode-Problems./
• https://leetcode.com/discuss/general-discussion/1061059/ABCs-of-Greedy
• https://medium.com/algorithms-and-leetcode/greedy-algorithm-explained-using-leetcode-problems-80d6fee071c4