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Tag: problem

October 2, 2020

Second largest number in array in Java

In this Post, I am going to discuss how to find the second largest number in array in java. So, without wasting time, let’s start I am going to discuss the problem by using Java…

September 23, 2020

String Anagram Program In C | Easy Explanation

So, In this post, we are going to discuss the program and algorithm of anagram In C/C++/Java. What matters is only the algorithm, If you better understand the Algorithm you can code in any language…

September 7, 2020

Basketball Exercise Codeforce 1195C Editorial Explained

This is another editorial post of the codeforce problem Basketball Exercise. Detailed BasketBall Exercise Editorial The problem is basically a DP problem where we have the choice to choose such that  no consecutive chosen students…

June 28, 2020

Problems on Topological Sorting | Topological Sort In C++

In the previous post, we discussed Topological Sorting and in this post, we are going to discuss two problems based on topological sort in c++. So, let’s start. Leetcode 210 :  Course Schedule II There…

June 16, 2020

Clone a link list with next and random Pointer (Part II)

In the previous post, we have already discussed the map-based solution of the problem clone a link list with next and random pointer. The map-based solution took O(n) extra space but in this post, we…

June 13, 2020

Clone a linked list with next and random pointer

Leetcode Problem 138 A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null. We need to clone-a-linked-list-with-next-and-random-pointer. Read rat in…

June 10, 2020

Rat in a Maze Problem Explained 2020 (Backtracking)

Problem Statement of rat in a maze problem The problem is a rat in a maze problem. Consider a rat placed at (0, 0) in a square matrix of order N*N. It has to reach the destination at (n-1,…

June 8, 2020

Two Pointer Algorithm | Complete Explanation

Today we are going to discuss a trending Algorithm that is used frequently for solving problems the “Two Pointer Algorithm“. In this post, we will first understand the Two Pointer Algorithm and then we will…

June 5, 2020

Sub-tree Problems in Tree Data Structure

Today I am going to discuss two Tree Data Structure Problems, from the first sub tree sum problem we will learn some new concepts, and then we will use that concept to solve another problem….

May 30, 2020

Find Duplicate Number and Missing Number

In this post, we will discuss two famous interview problems, Duplicate Number and Missing Number. From the first problem we will learn some concepts, and then we will apply it to solve a Leetcode hard…

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