Word Stemming


Difficulty: 3 | Problem written by zeyad_omar
Problem reported in interviews at


Stemming words is a very important preprocessing technique use in NLP to obtain words and then feed those words to a model.

Examples of stemming:

"Plays", "playing", and "Played" are all stemmed to "play"

In this problem, you are given a word and you are asked to return the stem of the word.

You can use NLTK library . 

Sample Input:
<class 'list'>
x: ['playing']

Expected Output:
<class 'str'>

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Input Test Case

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numpy has been already imported as np (import numpy as np)