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Valid Parentheses | Leetcode 20 Solution

Introduction The “Valid Parentheses” problem (Leetcode 20) is a popular question often asked in coding interviews. The task is to check if a given string containing just the characters ‘(‘, …
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Valid Parentheses | Leetcode 20 Solution

Introduction The “Valid Parentheses” problem (Leetcode 20) is a popular question often asked in coding …

Remove Nth Node from End of List | Leetcode 19 Solution

Problem Description Given a linked list, remove nth node from end of list and return …

4Sum Leetcode | Leetcode 18 Solution

The 4Sum problem is a variation of the classic two-sum problem. The task is to …

Letter Combinations of a Phone Number | Leetcode 17 Solution

The “Letter Combinations of a Phone Number“ problem is a classic question often asked in …

3Sum Closest | Leetcode 16 Solution

The 3Sum Closest problem from Leetcode is a popular algorithmic challenge that tests your understanding …

3Sum Leetcode | Leetcode 15 Solution

The 3Sum problem is a popular coding challenge on LeetCode that tests your ability to …

Alogithms


Manacher’s Algorithm

The Ultimate Guide to Manacher’s Algorithm

Palindromes are fascinating sequences that read the same backward as forward. In computer science, one …

Difference between Linear Search Algorithm and Binary Search Algorithm

When searching through data, choosing the right algorithm can make a huge difference. In this …

selection sort

Mastering the Selection Sort Algorithm-Complete Guide

When it comes to sorting algorithms, Selection Sort stands out for its simplicity and foundational …

Data Structures


Valid Parentheses | Leetcode 20 Solution

Introduction The “Valid Parentheses” problem (Leetcode 20) is a popular question often asked in coding …

Remove Nth Node from End of List | Leetcode 19 Solution

Problem Description Given a linked list, remove nth node from end of list and return …

How to Implement a Queue Using Arrays

Introduction Queues are a fundamental data structure in computer science, often used in various applications …

Database


How to install and configure MySQL on Windows

MySQL is among the most widely-used open-source relational database management systems (RDBMS).It’s widely used in …

Primary Key Constraint

SQL – Foreign Key and its use in Database

In relational databases, a Foreign Key is a crucial concept that helps establish a connection …

Primary Key Constraint

SQL – Primary Key and its use in a Database

In this article you will learn about- What is primary Key?  A primary key can …

Web development


How to install and configure Apache Tomcat on Windows

Apache Tomcat is a widely used open-source web server and servlet container that enables Java …

install and setup nginx on windows

How to install and set up Nginx on Windows

Nginx is a powerful web server and reverse proxy solution known for its speed, scalability, …

website loader

How to make Simple Website Loader using HTML and CSS

Introduction A website loader, also known as a spinner, preloader, or loading animation, is a …

Coding


Valid Parentheses | Leetcode 20 Solution

Introduction The “Valid Parentheses” problem (Leetcode 20) is a popular question often asked in coding …

Remove Nth Node from End of List | Leetcode 19 Solution

Problem Description Given a linked list, remove nth node from end of list and return …

4Sum Leetcode | Leetcode 18 Solution

The 4Sum problem is a variation of the classic two-sum problem. The task is to …