GCD of Two Numbers (C, Python, Java) With Examples
Problem Statement Given two non-negative integers a and b, we have to find their GCD (greatest common divisor),i.e.…
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Coding Problems
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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…
Find Median in a Stream
Problem Statement Given are some integers, which are read from the data stream. The task is to find…
Friends Pairing Problem (Solution)
Problem Statement Given a total of n friends, each friend can either remain single or can be paired…
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…
Letter Combinations of a Phone Number
Problem Statement Given a digit string, return all possible letter combinations that the number could represent. A mapping…
Bit Manipulation (Complete Guide)
What is Bit Manipulation? Bit Manipulation is a collection of techniques that allows us to solve various problems…
Implement Queue Using Stack
Problem Statement The task here is to implement a First In First Out queue using Stacks. The queue…
Interleaving Strings (C, Java, and Python Code)
Given three strings S1, S2 and S3. The task is to check whether the string S3 can be…
Sorted Array to Balanced BST
Given an array A[] of size N, sorted in ascending order. The task is to convert it into…