- 1 Two Sum Easy
- 2 Best Time to Buy and Sell Stock Easy
- 3 Maximum Subarray Easy
- 4 Contains Duplicate Easy
- 5 Merge Sorted Array Easy
- 6 Move Zeroes Easy
- 7 Majority Element Easy
- 8 Remove Duplicates from Sorted Array Easy
- 9 Rotate Array Medium
- 10 Intersection of Two Arrays II Easy
- 11 Valid Mountain Array Easy
- 12 Check If N and Its Double Exist Easy
- 13 Find All Numbers Disappeared in an Array Easy
- 14 Height Checker Easy
- 15 Third Maximum Number Easy
- 16 Maximum Product of Three Numbers Easy
- 17 Minimum Size Subarray Sum Medium
- 18 Find Pivot Index Easy
- 19 Sort Array By Parity Easy
- 20 Remove Element Easy
- 21 Squares of a Sorted Array Easy
- 22 Kth Largest Element in an Array Medium
- 23 Missing Number Easy
- 24 Set Mismatch Easy
- 25 Max Consecutive Ones Easy
- 26 Valid Palindrome Easy
- 27 Implement strStr() Easy
- 28 Longest Common Prefix Easy
- 29 Reverse String Easy
- 30 Reverse Words in a String III Easy
- 31 Valid Anagram Easy
- 32 First Unique Character in a String Easy
- 33 String to Integer (atoi) Medium
- 34 Add Strings Easy
- 35 Check If Two String Arrays are Equivalent Easy
- 36 To Lower Case Easy
- 37 Valid Parentheses Easy
- 38 Roman to Integer Easy
- 39 Length of Last Word Easy
- 40 Detect Capital Easy
- 41 Is Subsequence Easy
- 42 Count and Say Medium
- 43 Longest Substring Without Repeating Characters Medium
- 44 Find the Index of the First Occurrence in a String Easy
- 45 Remove Palindromic Subsequences Easy
- 46 Fizz Buzz Easy
- 47 Palindrome Number Easy
- 48 Count Primes Medium
- 49 Power of Two Easy
- 50 Excel Sheet Column Number Easy