Compress the String! – Python hackerrank Solution

In this task, we would like for you to appreciate the usefulness of the groupby() function of itertools . To read more about this function, Check this out .

You are given a string S. Suppose a character ‘c’ occurs consecutively X times in the string. Replace these consecutive occurrences of the character ‘c’ with (X,c) in the string.

For a better understanding of the problem, check the explanation.

Input Format

A single line of input consisting of the string S.

Output Format

A single line of output consisting of the modified string.

Constraints

All the characters of S denote integers between 0 and 9.

Sample Input

Sample Output

(1, 1) (3, 2) (1, 3) (2, 1)

Explanation

First, the character 1 occurs only once. It is replaced by (1,1). Then the character 2 occurs three times, and it is replaced by (3,2) and so on.

Also, note the single space within each compression and between the compressions.

Code:

# Enter your code here. Read input from STDIN. Print output to STDOUT
#

from itertools import groupby
S=input()

for i,j in groupby(map(int,list(S))):
    print(tuple([len(list(j)), i]) ,end = " ")

Disclaimer: This problem is originally created and published by HackerRank, we only provide solutions to this problem. Hence, doesn’t guarantee the truthfulness of the problem. This is only for information purposes.