Deependra Singh 
Table of content: What is Javascript JavaScript is a scripting or programming language primarily used for creating interactive and dynamic elements on websites. It is the third layer of the layer cake of standard web technologies, two of which HTML and CSS. It enables you to create dynamically updating content, control multimedia, animate images, and … Read more
Problem Description: Given an integer array nums, move all 0‘s to the end of it while maintaining the relative order of the non-zero elements. Example 1: Example 2: Constraints: Move Zeroes – LeetCode Solution(s): To move all zeros to the end of an integer array while maintaining the relative order of the non-zero elements, you can follow … Read more
Introduction to Apache Apache HTTP Server, commonly referred to as Apache, is an open-source web server software developed and maintained by the Apache Software Foundation. The Apache HTTP Server is one of the most widely used web server softwares available. A web server is the software that powers a website. It is an open-source software … Read more
Problem Description: Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raining. Example 1 : Example 2: Constraints: Problem Link :Trapping Rain Water – LeetCode Solution(s): Approach 1: Brute Force Solution Java Code: Explanation: 1.Initialization: 2.Main Loop: 3.Finding Maximum Height to the Left: … Read more
Problem Descrption: You are given two integer arrays nums1 and nums2, sorted in non-decreasing order, and two integers m and n, representing the number of elements in nums1 and nums2 respectively. Merge nums1 and nums2 into a single array sorted in non-decreasing order. The final sorted array should not be returned by the function, but instead be stored inside the array nums1. To accommodate this, nums1 has a length of m + n, where the first m elements … Read more
Problem Description: Given an integer array nums, rotate the array to the right by k steps, where k is non-negative. Example 1: Example 2: Constraints: Problem Link : Rotate Array – LeetCode Solution(s): Approach 1: Using temporary array Java Code: Complexity: Approach 2 : In-Place Java Code : Complexity:
Given an integer array nums and an integer val, remove all occurrences of val in nums in-place. The order of the elements may be changed. Then return the number of elements in nums which are not equal to val. Consider the number of elements in nums which are not equal to val be k, to get accepted, you need to do the following things: Custom Judge: The judge will test your … Read more
Navigation is very much part of any web application. It makes website accessible to users. In this article, you will learn ’How to create a basic horizontal navigation bar’ Following is the step-by-step tutorial for doing so. Step 1: Create a div inside the body tag which will hold the menu items: HTML: CSS: Output: Step … Read more
In this article you will learn about- What is foreign Key? A foreign key can be defined in either a CREATE TABLE statement or an ALTER TABLE statement. Using a CREATE TABLE statement Syntax: The syntax for creating a foreign key using a CREATE TABLE statement is: Example: Parent Table – STOCK Using an ALTER … Read more
In this article you will learn about- What is primary Key? A primary key can be defined in either a CREATE TABLE statement or an ALTER TABLE statement. Databases use keys to compare, sort, and store records, and to create relationships between records. Choosing the primary key in a database is one of the most … Read more