# LeetCode 48. Rotate Image

Description https://leetcode.com/problems/rotate-image/ You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Note: You have…

# LeetCode 283. Move Zeroes

Description https://leetcode.com/problems/move-zeroes/ Given an array nums, write a function to move all 0‘s to the end of it while maintaining the relative…

# LeetCode 350. Intersection of Two Arrays II

Description https://leetcode.com/problems/intersection-of-two-arrays-ii/ Given two arrays, write a function to compute their intersection. Example 1: Input: nums1 = [1,2,2,1], nums2 =…

# LeetCode 189. Rotate Array

Description https://leetcode.com/problems/rotate-array/ Given an array, rotate the array to the right by k steps, where k is non-negative. Example 1: Input: [1,2,3,4,5,6,7] and k…

# LeetCode 217. Contains Duplicate

Description https://leetcode.com/problems/contains-duplicate/ Given an array of integers, find if the array contains any duplicates. Your function should return true if…

# LeetCode 66. Plus One

Description https://leetcode.com/problems/plus-one/ Given a non-empty array of digits representing a non-negative integer, plus one to the integer. The digits are stored such that…

# LeetCode 344. Reverse String

Description https://leetcode.com/problems/reverse-string/ Write a function that reverses a string. The input string is given as an array of characters char[]. Do…

# LeetCode 53. Maximum Subarray

Description https://leetcode.com/problems/maximum-subarray/ Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and…

# LeetCode 70. Climbing Stairs

Description https://leetcode.com/problems/climbing-stairs/ You are climbing a stair case. It takes n steps to reach to the top. Each time you can either…

# LeetCode 387. First Unique Character in a String

Description Given a string, find the first non-repeating character in it and return it’s index. If it doesn’t exist, return…