LeetCode 15 3Sum Explained Like a Production Engineer (Java, C++, Python)
The 3Sum problem is one of the most popular problems on LeetCode.It looks simple, but many developers struggle with it […]
Leet Code : Longest Palindromic Substring Java | CPP | Java Script | Python Solution
Given a string s, return the longest palindromic substring in s. A string is called a palindrome string if the reverse of that string
Leet Code: Longest Substring Without Repeating Characters Java | JavaScript | CPP | Python Solution
Find the length of the longest substring without repeated characters given a string s. Example 1: Input: s = “abcabcbb”
Leet Code : Add Two List – Java | CPP | Javascript | Python
You are given two non-empty linked lists that each represent a non-negative integer. The digits are kept in reverse order,
Leet Code : Median of two sorted array -CPP || java || Python || Java Script
Provide the median of the two sorted arrays given two sorted arrays of sizes m and n, respectively. The entire
LeetCode Two Sum Problem – Optimal Solutions in Java, C++, JavaScript & Python
The Two Sum problem is one of the most popular beginner-friendly questions on LeetCode.It is frequently asked in coding interviews
Leet Code :Linked List Cycle II Java || Python || C++ solution
Given the head of a linked list, return the node where the cycle begins. If there is no cycle, return null. There is a
leet Code : Validate Binary Search Tree Java || C++ || C || pYthon
Given the root of a binary tree, determine if it is a valid binary search tree (BST). A valid BST is defined as follows: Example
Leet Code :Running Sum of 1d Array Solution C++ || Python || Java
Given an array nums. We define a running sum of an array as runningSum[i] = sum(nums[0]…nums[i]). Return the running sum of nums. Example
leet code median of two sorted array Java ,C++ ,C, JS solution
Given two sorted arrays nums1 and nums2 of size m and n respectively, return the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). Example
Leet Code: Rotate Array C++ Python || JavaScript || Java solution:
Given an array, rotate the array to the right by k steps, where k is non-negative. Example 1: Input: nums = [1,2,3,4,5,6,7], k =
Leet Code : Merge k Sorted Lists C++ , Java , Python solution
You are given an array of k linked-lists lists, each linked-list is sorted in ascending order. Merge all the linked-lists into one sorted
Leet Code : Reverse Nodes in k-Group Java, Python ,C++ JavaScript 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
Leet Code : longest common prefix string C++ ,java , Python Solution
Write a function to find the longest common prefix string amongst an array of strings. If there is no common