Tag

String Problems

Problems involving string parsing, comparison, palindromes, or transformations. (18 problems)

Easy · 3

Valid Parentheseseasy Valid Anagrameasy Valid Palindromeeasy

Medium · 12

Group Anagramsmedium Longest Substring Without Repeating Charactersmedium Longest Repeating Character Replacementmedium Implement Trie (Prefix Tree)medium Word Searchmedium Longest Common Subsequencemedium Word Breakmedium Decode Waysmedium Longest Palindromic Substringmedium Palindromic Substringsmedium Encode and Decode Stringsmedium Design Add and Search Words Data Structuremedium

Hard · 3

Minimum Window Substringhard Alien Dictionaryhard Word Search IIhard