Bit Tricks

Tricks? Yes, you read it right! Clever programmers always love such things. Bits have made my life so easy, that I always love to talk…

Partition to k equal sum subsets

Hi guys, I am back with another coding interview problem. So, here we go!

The Staircase Problem

High rise buildings and too many stairs! Well, wait! Do you ever think about the number of ways you can climb to the…

Uber and Arrays

This post is about a very beautiful interview question that was once asked by Uber. Question statement is as follows:

Given an array of integers, return a new array such that each element at index i of the new array is the product of all the numbers in the original array…

Regular Expression Matching

Hi! Today we are going to talk about a very useful concept known as regular expressions also called regex.

WINE SELLING PROBLEM

Today, we will have a walkthrough of a classical interview problem. This problem has been asked in many coding interviews…

Letter Combinations of a Phone Number

In the ancient times, when there were no smartphones, the mobile phones used to have a keypad…

Rotting Oranges

Recently, I came across this very beautiful problem which is also a very good use case of graph breadth first search algorithm.

The real power of computer science

Pointers! I have sensed a weird kind of pointer fear in many of my pals. They are literally like…