How to merge sorted integer arrays (without duplicates) in Java
The challenge
Write a function that merges two sorted arrays into a single one. The arrays only contain integers. Also, the final outcome must be …
Read Article →Technical Articles
In-depth guides, insights, and best practices for modern software engineering
Find the Force of Gravity Between Two Objects with Java
The challenge
Your job is to find the gravitational force between two spherical objects (obj1 , obj2).
Two arrays are give :
arr_val(value array), …
How to zoom text by mouse wheel in IntelliJ Idea
It’s a common requirement to be able to zoom in or out while working in the code editor in IntelliJ Idea.
This is achieved on Windows with CTRL+ …
Playing the Bulls and Cows Game in Java
The challenge
You are playing the following Bulls and Cows game with your friend: You write down a number and ask your friend to guess what the number …
Read Article →Calculate the Sum of Root To Leaf Binary Numbers in Java
The challenge
Given a binary tree, each node has value `` or 1. Each root-to-leaf path represents a binary number starting with the most significant …
Remove an Exclamation Mark from the End of String using Python
The challenge
Remove a exclamation mark from the end of string. You can assume that the input data is always a string, no need to verify it.
Examples …
Read Article →How to “Rock Paper Scissors” in Java
The challenge
Let’s play Rock Paper Scissors! You have to return which player won! In case of a draw return Draw!.
Examples: …
Read Article →Compare within Margin using Python
The challenge
Create a function close_compare that accepts 3 parameters: a, b, and an optional margin. The function should return whether a is lower …
Get the mean of an array in Java
The challenge
It’s the academic year’s end, fateful moment of your school report. The averages must be calculated. All the students come …
Read Article →Remove the time challenge in Python
The challenge
You’re re-designing a blog and the blog’s posts have the following format for showing the date and time a post was made: …
Read Article →How to Convert Hex to Decimal in Java
The challenge
Write a function that converts an input string contains a hex value, and return a decimal.
Test cases
import org.junit.Test;
import …Character with Longest Consecutive Repetition in Java
The challenge
For a given string s find the character c (or C) with longest consecutive repetition and return:
Object[]{c, l};
where l (or L) is the …