Calculate Word Frequency


Difficulty: 2 | Problem written by mesakarghm
For a given pair of sentence and token represented as string, calculate and return the total number of times given token occurs in the text.

For example, for the inputs "Hi there how are you doing this fine evening?" and "Hi", the output will be 1 because the word "Hi" occurs only once in the text.

Sample Input:
<class 'str'>
sentence: He is a very good boy. He drinks a lot of milk.
<class 'str'>
token: he

Expected Output:
<class 'int'>

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Jump to comment-80
uahnbu • 7 months, 2 weeks ago


return re.split("\W", sentence.lower()).count(token.lower())


Jump to comment-151
abhishek_kumar • 3 months ago


Point to be noted:

-> you have to lower all the characters.

-> All Punctuation marks should be removed. For that using the regex method is most appropriate. 

-> Direct converting a Sentence into list will not work. Since the last word will have a punctuation mark.

Jump to comment-163
avishek • 2 months, 3 weeks ago


from itertools  import chain

def count_word_frequency(sentence,token):
    a = sentence.lower()
    b = token.lower()
    a = list(chain.from_iterable([i.split() for i in a.split(".")]))
    return a.count(b)

For some reason case 3 is failing

Jump to comment-180
mo_venouziou • 2 months, 1 week ago


Also note that the token doesn't count if it is a substring of a longer word.


Input Test Case

Please enter only one test case at a time
numpy has been already imported as np (import numpy as np)