LeetCode 141. Linked List CycleLeetCode-141 Given head, the head of a linked list, determine if the linked list has a cy

LeetCode 88. Merge Sorted ArrayLeetCode-88You are given two integer arrays nums1 and nums2, sorted in non-decreasing ord

LeetCode 125. Valid PalindromeLeetCode-125 Given a string s, determine if it is a palindrome, considering only alphanume

LeetCode 54. Spiral MatrixLeetCode-54 Given an m x n matrix, return all elements of the matrix in spiral order. Example

LeetCode 209. Minimum Size Subarray SumLeetCode-209 Given an array of positive integers nums and a positive integer targ

LeetCode 977. Squares of a Sorted ArrayLeetCode-977 Given an integer array nums sorted in non-decreasing order, return a

LeetCode 328. Odd Even Linked ListLeetCode-328 Given the head of a singly linked list, group all the nodes with odd indi

LeetCode 203. Remove Linked List ElementsLeetCode-203 Given the head of a linked list and an integer val, remove all the

LeetCode 42. Trapping Rain WaterLeetCode-42 Given n non-negative integers representing an elevation map where the width

LeetCode 496. Next Greater Element ILeetCode-496 You are given two integer arrays nums1 and nums2 both of unique element

LeetCode 162. Find Peak ElementLeetCode-162 A peak element is an element that is strictly greater than its neighbors. Gi

LeetCode 74. Search a 2D MatrixLeetCode-74 Write an efficient algorithm that searches for a value in an m x n matrix. Th