Solving Speed Control in Java
The challenge
In John’s car the GPS records every s seconds the distance travelled from an origin (distances are measured in an arbitrary but …
Technical Articles
In-depth guides, insights, and best practices for modern software engineering
Calculate Miles per Gallon to Kilometers per Litre in Java
The challenge
Create an application that will display the number of kilometers per liter (output) based on the number of miles per imperial gallon …
Read Article →How to Convert an Int to a List of Ints in Python
The challenge
Given a non-negative integer, return an array / a list of the individual digits in order.
Examples:
123 => [1,2,3]
1 => [1] …Find the Greatest Common Divisor in Java
The challenge
Find the greatest common divisor of two positive integers. The integers can be large, so you need to find a clever solution.
The inputs …
Read Article →How to Create a Circular List in Python
The challenge
Create a Circular List
A circular list is of finite size, but can infititely be asked for its previous and next elements. This is …
Read Article →How to Guess the Sequence in Java
The challenge
You must guess a sequence and it has something to do with the number given.
Example
x = 16
result = [1, 10, 11, 12, 13, 14, 15, 16, 2, …Reversed sequence in Java
The challenge
Build a function that returns an array of integers from n to 1 where n>0.
Example : n=5 –> [5,4,3,2,1]
The solution in Java code …
Read Article →Count the Digit in Java
The challenge
Take an integer n (n >= 0) and a digit d (0 <= d <= 9) as an integer. Square all numbers k (0 <= k <= n) between 0 and n. …
Multiply all elements in an array in Java
The challenge
Create a function multiplyAll/multiply_all which takes an array of integers as an argument. This function must return another function, …
[Solved] Fatal: refusing to merge unrelated histories in Git
You have received the dreaded fatal: refusing to merge unrelated histories error!
You might find yourself asking one of the following questions:
- What …
Credit Card Mask in Java
The challenge
Usually when you buy something, you’re asked whether your credit card number, phone number or answer to your most secret question …
Read Article →How to Reverse a Number in Java
The challenge
Given a number, write a function to output its reverse digits. (e.g. given 123 the answer is 321)
Numbers should preserve their sign; …
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