How to create Interleaving Arrays in Python
The challenge
Create a function, that accepts an arbitrary number of arrays and returns a single array generated by alternately appending elements …
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In-depth guides, insights, and best practices for modern software engineering
How to Find the Largest product in a Series in Python
The challenge
Complete the greatestProduct method so that it’ll find the greatest product of five consecutive digits in the given string of …
How to Calculate the Least Common Multiple in Python
The challenge
Write a function that calculates the least common multiple of its arguments; each argument is assumed to be a non-negative integer. In …
Read Article →How to Solve Caesar Cipher Helper in Python
The challenge
Write a class that, when given a string, will return an uppercase string with each letter shifted forward in the alphabet by however …
Read Article →How to Write Out Numbers in Python
The challenge
Create a function that transforms any positive number to a string representing the number in words. The function should work for all …
Read Article →How to do Base64 Encoding in Python
The challenge
Create a function that converts the value of the String to and from Base64 using the ASCII character set.
Do not use built-in functions. …
Read Article →How to Calculate Transport on Vacation in Java
The challenge
After a hard quarter in the office you decide to get some rest on a vacation. So you will book a flight for you and your girlfriend and …
Read Article →Playing with the letter ‘E’ in Java
The challenge
Given String str, return:
- If given String doesn’t contain any “e”, return: “There is no “e”.” …
How to Sum the Average for NBA Players in Golang
The challenge
Write a function, called sumPPG, that takes two NBA player objects/struct/Hash/Dict/Class and sums their PPG
Examples:
iverson := …How to Compute a Cube as Sums in Golang
The challenge
You will be given a number n (where n >= 1) and your task is to find n consecutive odd numbers whose sum is exactly the cube of n. …
The Deaf Rats of Hamelin Challenge in Java
The challenge
The Pied Piper has been enlisted to play his magical tune and coax all the rats out of town.
But some of the rats are deaf and are going …
Read Article →How to Find the Next Perfect Square in Java
The challenge
You might know some pretty large perfect squares. But what about the NEXT one?
Complete the findNextSquare method that finds the next …
How to Find the Unique String in Python
The challenge
There is an array of strings. All strings contain similar letters except one. Try to find it!
find_uniq([ 'Aa', 'aaa', …How to convert a PascalCase string into snake_case in Python
The challenge
Complete the function/method so that it takes a PascalCase string and returns the string in snake_case notation. Lowercase characters …
How to Convert a Hex String to RGB in Python
The challenge
When working with color values it can sometimes be useful to extract the individual red, green, and blue (RGB) component values for a …
Read Article →How to Create a Hashtag Generator in Python
The challenge
Write a hashtag generator function that takes a string and returns a #HashCodeString of it.
The hashtag generator should perform the …
Read Article →How to Move Zeros to the End in Python
The challenge
Write an algorithm that takes an array and moves all of the zeros to the end, preserving the order of the other elements.
move_zeros([1, …Regex for Gregorian Date Validation in Python
The challenge
Write a regular expression that validates the gregorian date in the format “DD.MM.YYYY”
Correct date examples: …
Read Article →How to Create Your Own Python Split Function
The challenge
Write your own implementation of the built-in split function in Python.
The following rules must be adhered to:
- the function cannot …
How to create a Domain Name Validator in Python
The challenge
Create a domain name validator mostly compliant with RFC 1035, RFC 1123, and RFC 2181
The following rules apply:
- Domain name may …
How to start Java Jar as Service on Linux
If you have a Java Jar file, you can run it as a service under Linux/Ubuntu.
sudo ln -s /var/www/japi-0.0.1-SNAPSHOT.jar /etc/init.d/japi
Now you can …
Read Article →How to write a validDate Regex in Python
The challenge
Your task is to write a regular expression (regex) that will match a string only if it contains at least one valid date, in the format …
Read Article →How to Validate Passwords with Regex in Python
The challenge
You need to write regex that will validate a password to make sure it meets the following criteria:
- At least six characters long …
How to create a Coordinates Validator in Golang
The challenge
You need to create a function that will validate if given parameters are valid geographical coordinates.
Valid coordinates look like the …
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