# Learn and Grow

### 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” Output: 3 Explanation: The answer is “abc”, with the length of 3. Example 2: Input: s = “bbbbb” Output: 1

### 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, with each node containing only one digit. Add the two numbers together and return the total as a linked list.

### 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 complexity of the run time should be O(log (m+n)). Eg 1: Numbers1 = [1,3], Numbers2 =  Result: 2.00000 Explanation:

### leet code : Two sum Problem solution – Java || CPP || JavaScript || Python

In this article, we will be discussing the two sum problem and how it can be solved using the programming languages C++, Java, and Python Problem Statement two sum java ​This is another article in the series leetcode problem solutions

### Binary Tree Level Order Traversal

Given the root of a binary tree, return the level order traversal of its nodes’ values. (i.e., from left to right, level by level). Example 1: Input: root = [3,9,20,null,null,15,7] Output: [,[9,20],[15,7]] Example 2: Input: root =  Output: [] Example 3: