Python Collections: Hackerrank Question on Counter

The Question

https://www.hackerrank.com/challenges/word-order/problem

You are given n words. Some words may repeat. For each word, output its number of occurrences. The output order should correspond with the input order of appearance of …


This content originally appeared on DEV Community and was authored by Kathan Vakharia

The Question

https://www.hackerrank.com/challenges/word-order/problem

You are given n words. Some words may repeat. For each word, output its number of occurrences. The output order should correspond with the input order of appearance of the word.

The Approach

  1. store the words as they come in the Counter.
  2. print them.

? I hope you remember, Counter after python 3.7 internally maintains insertion order.

Code 

from collections import Counter

words = list()

#n -> no of words
n = int(input())
for _ in range(n):
    words.append(input())

#
c =Counter(words)

print(len(c))
print(*c.values())


This content originally appeared on DEV Community and was authored by Kathan Vakharia


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