Strings

Reverse only vowels in a string while keeping other characters in place

Reverse word order and remove extra spaces

Check if string can be a palindrome by removing at most one character

Check if typed string could be result of long pressing name

Compare two strings with backspace characters (#)

Compress string in-place using read/write pointers

Return all start indices where p's anagram appears in s

Return the index of the first non-repeating character

Check if ransomNote can be built from magazine letters

Check whether every opening bracket is closed in the correct order

Simplify an absolute Unix-style file path

Remove k digits from a number string to produce the smallest possible number

Decode nested repetition patterns like 3[a2[c]]

Evaluate expression with +, -, *, / and non-negative integers

Support addWord and search with wildcard dot matching

Replace words in a sentence by the shortest dictionary root

Return up to 3 lexicographically sorted suggestions while typing each prefix

Implement a stream checker that detects any suffix matching inserted words

Find all words in a board using trie-guided DFS

Minimize encoded length by merging shared suffixes in a trie

Implement buildDict + search allowing one character mismatch

Find the longest word that can be built one character at a time

Return the first index where needle appears in haystack, or -1

Find the longest prefix shared by all strings in an array

Return the length of the final word in a string

Count substrings with equal consecutive 0s and 1s

Parse a string into a 32-bit signed integer with clamping

Multiply two non-negative integer strings without converting to big integers

Format words into fully justified lines of width maxWidth

Count all palindromic substrings in a string

Find the longest palindromic substring

Compute minimum operations to convert word1 to word2

Implement regex matching with . and * for full-string match

Check if two strings are anagrams by sorting and comparing

Arrange numbers to form the largest possible number

Sort characters by how often they appear, most frequent first