How the bits/stdc++ .h works in C++
I often wonder, How does #include < bits/stdc++.h> work?. I’ve seen this while solving competitive problems and referring to various solutions and I wanted to know what’s happing in the…
C++
Perform Set Operations on Arrays
In this problem, we’ll be performing some basic set operations on the given arrays like Union, Intersection, and Difference. I found this problem when I was writing a practice test…
Target Sum – Single Iteration O(N)
Given, a sorted array of elements and we need to find all the pairs of elements that add up equally to a given target sum number, this can be done…
Sum of Numbers in a String
Today, I found a problem where we need to find the sum of numbers in a string, the string will be a mix of alphabets, numbers, and special characters, and…
Squares of a Sorted Array LeetCode O(N)
In this problem, given a sorted array in decreasing order and we should return the squares of each number and in the same ascending order, and the one thing we…
Single Number in Array LeetCode C++
Program to Find the Single Number in an Array LeetCode problem. In this question, we have an array containing numbers in pairs, but a single number appears only once in…