Sort an array of 0s, 1s and 2seasy
Find the majority element that occurs more than N/2 timeseasy
Kadane's Algorithm / Maximum Subarray Summedium
Stock Buy and Selleasy
Two Sum - Check if a pair with given sum exists in Arrayeasy
Sort Colors using Rearranging arraymedium
Next Permutationmedium
Leaders in an Array problemeasy
Longest Consecutive Sequence in an Arraymedium
Set Matrix Zeroesmedium
Rotate Image by 90 degreemedium
Spiral Matrixmedium
Count Subarrays with given summedium
3-Sum Problemmedium
4-Sum Problemmedium
Merge Overlapping Subintervalsmedium
Merge Two Sorted Arrays Without Extra Spacehard
Maximum Product Subarraymedium
Pascal's Triangleeasy