Data Structure and Algorithms | 2020-03-01 Leetcode 22. Generate Parentheses Question Give a number n and return all valid parenthetical matches, exactly ...
Data Structure and Algorithms | 2020-02-28 Leetcode 17. Letter Combinations of a Phone Number Question Given a string of numbers, each number can represent several letters under a number key. ...
Data Structure and Algorithms | 2020-02-13 Leetcode 49. Group Anagrams Question Given multiple strings, categorize them. As long as the strings contain exactly the same ...
Data Structure and Algorithms | 2020-02-06 Leetcode 93. Restore IP Addresses Question Give a string and output all possible IP addresses. Note that results like 01.1.001.1 wh ...
Data Structure and Algorithms | 2020-02-04 Leetcode 3. Longest Substring Without Repeating Characters Question Given a string, find the longest substring without repeated characters and return its len ...
Data Structure and Algorithms | 2020-01-20 Leetcode 91. Decode Ways Question Each number corresponds to a letter. Given a string of numbers, need to know how many dec ...
Data Structure and Algorithms | 2020-01-19 Leetcode 5. Longest Palindromic Substring Question Dind the longest palindromic substring in a given string s Similar Questions Hard - 214. ...