Minimum Edit Distance

Hi geeks! In this article, we going to see about Minimum Edit Distance problem with Dynamic Programming Approach. Given two words word1 and word2, find the minimum number of operations required to convert word1 to word2. You have the following 3 operations permitted on a word: Insert a characterDelete a characterReplace a character Example 1: Input: word1 = "horse", word2 = … Continue reading Minimum Edit Distance

Maximal Square

Hi Geeks! In this article, we going to see about Maximal Square Problem. Given a 2D binary matrix filled with 0's and 1's, find the largest square containing only 1's and return its area. Example: Input: 1 0 1 0 0 1 0 1 1 1 1 1 1 1 1 1 0 0 1 … Continue reading Maximal Square

Find the Town Judge

In a town, there are N people labelled from 1 to N.  There is a rumor that one of these people is secretly the town judge. If the town judge exists, then: The town judge trusts nobody.Everybody (except for the town judge) trusts the town judge.There is exactly one person that satisfies properties 1 and 2. You are given trust, an array … Continue reading Find the Town Judge

Contains Duplicate II

Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j] and the absolute difference between i and j is at most k. Example 1: Input: nums = [1,2,3,1], k = 3 Output: true Example 2: Input: nums = [1,0,1,1], k = 1 Output: true Example 3: Input: nums = [1,2,3,1,2,3], k … Continue reading Contains Duplicate II

Check If It Is a Straight Line

You are given an array coordinates, coordinates[i] = [x, y], where [x, y] represents the coordinate of a point. Check if these points make a straight line in the XY plane. Example 1: Input: coordinates = [[1,2],[2,3],[3,4],[4,5],[5,6],[6,7]] Output: true Example 2: Input: coordinates = [[1,1],[2,2],[3,4],[4,5],[5,6],[7,7]] Output: false Constraints: 2 <= coordinates.length <= 1000coordinates[i].length == 2-10^4 <= coordinates[i][0], coordinates[i][1] <= 10^4coordinates contains no duplicate point. … Continue reading Check If It Is a Straight Line

Cousins in Binary Tree

In a binary tree, the root node is at depth 0, and children of each depth k node are at depth k+1. Two nodes of a binary tree are cousins if they have the same depth, but have different parents. We are given the root of a binary tree with unique values, and the values x and y of two different nodes in the tree. Return true if and only … Continue reading Cousins in Binary Tree

MongoDb with C# – CRUD Operations Part 1

In this article we going to see about all important commands in mongodb with c# driver. I'm going to demonstrate a CRUD operations on MongoDb with C#, so it helps you to understand better. Create a Sample Project in Visual Studio Here I have created a project with namespace MongoDbEssentials. To use MongoDb in Visual … Continue reading MongoDb with C# – CRUD Operations Part 1

Diagonal Traverse II

Hi Geeks ! Welcome to 100 days of Leetcode challenge. Day 57 of 100 Given a list of lists of integers, nums, return all elements of nums in diagonal order as shown in the below images. Example 1: Input: nums = [[1,2,3],[4,5,6],[7,8,9]] Output: [1,4,2,7,5,3,8,6,9] Example 2: Input: nums = [[1,2,3,4,5],[6,7],[8],[9,10,11],[12,13,14,15,16]] Output: [1,6,2,8,7,3,9,4,12,10,5,13,11,14,15,16] Example 3: Input: nums = [[1,2,3],[4],[5,6,7],[8],[9,10,11]] Output: … Continue reading Diagonal Traverse II

First Bad Version

You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the quality check. Since each version is developed based on the previous version, all the versions after a bad version are also bad. Suppose you have n versions [1, 2, ..., n] and you want to … Continue reading First Bad Version