9 docs tagged with "Two Pointer"

This is a solution to the 567. Permutation in String problem on LeetCode.

Problem Description

Given a string s and an array of query strings words, return the number of words that can be transformed into s by extending groups of identical characters in the word to have a size of three or more.

Given a list of strings words and a string pattern, return words that match pattern where each unique character in pattern maps uniquely to characters in the word.

This is a solution to the Find Beautiful Indices in the Given Array I problem on LeetCode.

Given the head of a singly linked list, return true if it is a palindrome or false otherwise.

Given a string ss and a character cc that appears in ss, return an array where each element at index ii represents the minimum distance from ii to any occurrence of cc in ss.

This is a solution to the Two Sum problem on LeetCode.

This is a solution to the Valid Palindrome problem on LeetCode.