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Given a linked list, remove the nth node from the end of the list and return its head. For example, Given linked list: 1->2->3->4->5, an…
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10 Essential Research Skills Every Student Must Master
Research skills are crucial for students, enabling them to effectively gather, analyze, and present information. Whether it's for academic assignments or personal projects, mastering these skills can …
Impact of Rising Fuel Prices on Indian Economy
Rising fuel prices have a significant impact on the Indian economy, affecting various sectors and the daily lives of cit…
Impact of Electric Vehicles on India's Economy
Electric vehicles (EVs) are rapidly transforming the transportation landscape in India, presenting both challenges and o…
Install and Configure MongoDB on Ubuntu
PrerequisitesUbuntu Server 18.04 - 64 bitRoot privilegesWhat we will do in this tutorial: Install MongoDBConfigure Mongo…
Minimum Changes To Make Alternating Binary String - String - Easy - LeetCode
You are given a string s consisting only of the characters '0' and '1'. In one operation, you can change any '0' to '1' …
Check if Array Is Sorted and Rotated - Array - Easy - LeetCode
Given an array nums, return true if the array was originally sorted in non-decreasing order, then rotated some number of…
Maximum Swap - Array - Medium - LeetCode
Given a non-negative integer, you could swap two digits at most once to get the maximum valued number. Return the maximu…
Sum of Unique Elements - Array - Easy - LeetCode
You are given an integer array nums. The unique elements of an array are the elements that appear exactly once in the ar…
Maximum Number of Balls in a Box - Maths - Easy - LeetCode
You are working in a ball factory where you have n balls numbered from lowLimit up to highLimit inclusive (i.e., n == hi…
Beautiful Arrangement II - Maths - Medium - LeetCode
Given two integers n and k, you need to construct a list that contains n different positive integers ranging from 1 to n…
Latest Time by Replacing Hidden Digits - String - Easy - LeetCode
You are given a string time in the form of hh:mm, where some of the digits in the string are hidden (represented by ?). …
Find the Highest Altitude - Array - Easy - LeetCode
There is a biker going on a road trip. The road trip consists of n + 1 points at different altitudes. The biker starts h…
Number Of Rectangles That Can Form The Largest Square - Array - Easy - LeetCode
You are given an array rectangles where rectangles[i] = [li, wi] represents the ith rectangle of length li and width wi.…
Decode XORed Array - Array - Easy - LeetCode
There is a hidden integer array arr that consists of n non-negative integers. It was encoded into another integer array …
Calculate Money in Leetcode Bank - Maths - Easy - LeetCode
Hercy wants to save money for his first car. He puts money in the Leetcode bank every day. He starts by putting in $1 on…