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R

R is a functional programming language used for statistical computing and graphics. Learn how to use R in our beginner's tutorial guide.

Git

Learn how to use Git, a version tracking software for programming projects used by nearly all professional software engineers.

Java

Learn the basic concepts of Java, a high-level programming language and computing platform used in all types of applications.

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Index of a substring

Learn how to find the index of a substring in Java.

Sum with for-loop, while-loop and recursion

Learn how to write three functions that compute the sum of the numbers in a list.

Odd ball out

Learn how to determine which ball is the odd one out with just two comparisons.

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