DIY: Concatenated Words

Solve the interview question "Concatenated Words" in this lesson.

Problem statement

Provided an array of strings, words, with unique elements, return all the concatenated words in the given array.

A word that is a combination of at least two or more words is known as a concatenated word.


The input will be an array of strings. The following is an example input:

{"cat", "dog", "cats", "lion", "catsdog"}


The output will be an array of concatenated words that exist in words. The following is an example output:


The string catsdog is the only word made up of cats and dog that exist in the array.

Coding exercise

Implement the findAllConcatenatedWords(words) function, where words is the array of strings. The function will return an array of concatenated strings.

Level up your interview prep. Join Educative to access 70+ hands-on prep courses.