4 min Coding Problems Add Two Numbers Represented by Linked Lists Problem Statement Given 2 numbers, where each digit is represented by nodes of a LinkedList, find the sum… June 8, 2022 Read More

2 min Coding Problems Serialize and Deserialize a Binary Tree Problem Statement Given a binary tree, serialize and deserialize the binary tree. Serialize: Write the tree into a… December 17, 2021 Read More

3 min Coding Problems Delete Node From Binary Search Tree Problem Statement Given a binary search tree and a key value. The task is to delete the given… January 17, 2022 Read More

5 min Coding Problems Find Median in a Stream Problem Statement Given are some integers, which are read from the data stream. The task is to find… January 17, 2022 Read More

4 min Coding Problems Friends Pairing Problem (Solution) Problem Statement Given a total of n friends, each friend can either remain single or can be paired… June 15, 2022 Read More

2 min Coding Problems N-ary Tree – Tree Data Structures Introduction N-ary trees are tree data structures that allow us to have up to n children nodes for… December 13, 2021 Read More

3 min Coding Problems Depth First Search – Traversal Of The Graph Problem Statement Given an undirected, unweighted graph print the DFS traversal of the graph. Sample Test CasesInput 1:… December 13, 2021 Read More

4 min Coding Problems Reverse Level Order Traversal Problem Statement Given a binary tree, return the reverse level order traversal of its nodes’ values. (i.e, from… January 17, 2022 Read More

2 min Coding Problems Sort String (C++, Java, and Python) Problem Statement Given a string S of lowercase English characters ‘a’ – ‘z’. The task is to sort… December 13, 2021 Read More

4 min Coding Problems Tree Diameter – Diameter of a Binary Tree Problem Statement Given a binary tree, find the diameter of the tree. Diameter: The diameter of a tree… July 8, 2022 Read More