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152. Maximum Product Subarray

Posted on 2024-12-30 Edited on 2025-10-25 In Leetcode

152. Maximum Product Subarray

Description

Given an integer array nums, find a subarray that has the largest product, and return the product.

136. Single Number

Posted on 2024-12-29 Edited on 2025-10-25 In Leetcode

136. Single Number

Description

Given a non-empty array of integers nums, every element appears twice except for one. Find that single one.

647. Palindromic Substrings

Posted on 2024-12-29 Edited on 2025-10-25 In Leetcode

647. Palindromic Substrings

Description

Given a string s, return the number of palindromic substrings in it.

134. Gas Station

Posted on 2024-12-29 Edited on 2025-10-25 In Leetcode

134. Gas Station

Description

There are n gas stations along a circular route, where the amount of gas at the i^th station is gas[i].

133. Clone Graph

Posted on 2024-12-29 Edited on 2025-10-25 In Leetcode

133. Clone Graph

Description

Given a reference of a node in a connected undirected graph.

131. Palindrome Partitioning

Posted on 2024-12-28 Edited on 2025-10-25 In Leetcode

131. Palindrome Partitioning

Description

Given a string s, partition s such that every substring of the partition is a palindrome. Return all possible palindrome partitioning of s.

130. Surrounded Regions

Posted on 2024-12-28 Edited on 2025-10-25 In Leetcode

130. Surrounded Regions

Description

You are given an m x n matrix board containing letters 'X' and 'O', capture regions that are surrounded :

128. Longest Consecutive Sequence

Posted on 2024-12-28 Edited on 2025-10-25 In Leetcode

128. Longest Consecutive Sequence

Description

Given an unsorted array of integers nums, return the length of the longest consecutive elements sequence.

127. Word Ladder

Posted on 2024-12-28 Edited on 2025-10-25 In Leetcode

127. Word Ladder

Description

A transformation sequence from word beginWord to word endWord using a dictionary wordList is a sequence of words beginWord -> s₁ -> s₂ -> … -> s_k such that:

125. Valid Palindrome

Posted on 2024-12-28 Edited on 2025-10-25 In Leetcode

125. Valid Palindrome

Description

A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forward and backward. Alphanumeric characters include letters and numbers.

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