Number of Rectangles in a Grid in Java
The challenge
Given a grid of size m x n, calculate the total number of rectangles contained in this rectangle. All integer sizes and positions are …
Read Article →Technical Articles
In-depth guides, insights, and best practices for modern software engineering
Longest vowel chain in Java
The challenge
The vowel substrings in the word codewarriors are o,e,a,io. The longest of these has a length of 2. Given a lowercase string that has …
Determine Unique String Characters in Java
The challenge
In this challenge, you will be given two strings a and b and your task will be to return the characters that are not common in the two …
Difference of Volumes of Cuboids in Java
The challenge
In this simple exercise, you will create a program that will take two lists of integers, a and b. Each list will consist of 3 positive …
Sort by binary ones in Java
The challenge
In this example you need to implement a function that sort a list of integers based on it’s binary representation.
The rules are …
Read Article →Binomial Expansion in Java
The challenge
Write a program that can do some algebra. Write a function expand that takes in an expression with a single, one character variable, and …
Consecutive strings in Java
The challenge
You are given an array(list) strarr of strings and an integer k. Your task is to return the first longest string consisting of k …
Determine the Highest Scoring Word in Java
The challenge
Given a string of words, you need to find the highest scoring word.
Each letter of a word scores points according to its position in the …
Read Article →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 …
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 →