#Data Structures And Algorithms

Once upon a time, in a village of coders, there lived a gardener named Prashant. He had two ways of planting flowers in his garden Greedy and Non

🧠 Why Are You Learning This?The minimum-weight arborescence (MWA) problem is a fundamental problem in graph theory with applications in:Network desig

Let me walk you through the different variations of the LCA problem and how to solve each one with slight modifications to the core algorithm.1. Basic LCA Probl

Greedy algorithms:The class of algorithms that make locally optimal choices at each step with the hope that these choices will lead to a globally optimal soluti

1. What Are We Talking About?The 132 pattern is a problem where we need to find a subsequence of three numbers in an array (nums[i], nums[j],&nbs

Situation:You are given a sorted array of integers where every element appears exactly twice, except for one element that appears only once.

In the world of computer science and mathematics, some problems are deceptively simple to describe but incredibly challenging to solve.One such problem is the&n

Greedy algorithm only applies to the optimization problem.Greedy algorithm makes the decision at every point choosing the local minimum or maximum depending on

Given the roots of two binary trees p and q, return true if the trees are equivalent, otherwise return false.Two binary trees

This problem check if a certain part of a tree is same tree as a given subtree.So before we solve this problem, we need to know how to check if two trees are sa

Given a binary tree, return true if it is height-balanced and false otherwise.A height-balanced binary tree is defined a

Maximum Depth (Height):Performance Indicator Tells you how efficient your BST operations will beOperations like search, insert, delete take O(h) time, where h i

You are given an m x n grid where each cell can have one of three values:0 representing an empty cell,1 representing a fresh orange, or

Thy why???Let's see the real world usage of this solution.  Real-World ApplicationsCourse Scheduling: The problem directly models real-world scenarios, suc

Imagine this: You’re in a coding interview at your dream company. The interviewer slides you a problem about scheduling meetings or merging overlapping interval

You have intercepted a secret message encoded as a string of numbers. The message is decoded via the following mapping:"1" -> 'A'"2" -> 'B'"25"

The algorithm discussed in this thread expand around center approach is a powerful technique that can solve a variety of problems related to pali

In this thread we will see how a single dynamic programming (DP) approach can be adapted to solve multiple seemingly different problems. By understand

Imagine you're building an app that needs to check if a number exists in a dataset of a million numbers. You have two options:1. 📝 Simple Array Search: &n

Let's first understand why is this question and it's solution significant to us:The Why??Algorithmic Pattern RecognitionIt's a gateway to understanding Dijkstra

Imagine you're building a social network, and you need to create a test environment that perfectly mirrors your production network - every user, every connectio

Imagine a social network like Facebook, every user is connected to their friends, who are connected to their friends, and so on. Or think about Google Maps navi

let's say we have a graph:How do we represent this Graph in data structure?Adjacency List:Represent this graph as anarray [ ] This array is going to have the eq