231. Power of Two
Leetcode 2149. Rearrange Array Elements by Sign
Leetcode 2108.Find First Palindromic String in the Array
169. Majority Element
2225. Find Players With Zero or One Losses
Related problems: permutation1 permutation2
26. Remove Duplicates from Sorted Array
Best template for Binary Search :
Leetcode 35. Search Insert Position
Leetcode : 1512. Number of Good Pairs