Reverse Nodes in k-Group LeetCode Solution

Problem Statement: Reverse Nodes in k-Group LeetCode Solution – Given the head of a linked list, reverse the nodes of the list k at a time, and return the modified list. k is a positive integer and is less than or equal to the length of the linked list. If the number of nodes is …

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LRU Cache Leetcode Solution

Problem Statement The LRU Cache LeetCode Solution – “LRU Cache” asks you to design a data structure that follows Least Recently Used (LRU) Cache We need to implement LRUCache class that has the following functions: LRUCache(int capacity): Initializes the LRU cache with positive size capacity. int get(int key): Return the value …

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Valid Palindrome II Leetcode Solution

Problem Statement The Valid Palindrome II LeetCode Solution – “Valid Palindrome II” states that given the string s, we need to return true if s can be a palindrome string after deleting at most one character. Example: Input: s = “aba” Output: true Explanation: The input string is already palindrome, so there’s …

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Product of Array Except Self LeetCode Solution

Problem Statement Product of Array Except Self LeetCode Solution – Given an integer array nums, return an array answer such that answer[i] is equal to the product of all the elements of nums except nums[i]. The product of any prefix or suffix of nums is guaranteed to fit in a 32-bit integer. You must write an algorithm that runs in O(n) time and without using the division …

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