HackerRank Compress the String! solution in Python

HackerRank Compress the String! Solution in Python – In this Compress the string problem solution, we need to develop a python program that can read a string as input and then we need to print the tuples containing the number of occurrence of integers on the output screen.

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

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.

HackerRank Compress the String! solution in Python 2.

from itertools import groupby
s=map(int,list(raw_input()))
l=[(sum(1 for i in g),k) for k,g in groupby(s)]
print ' '.join(map(str,l))

HackerRank Compress the String! solution in Python 3.

from itertools import groupby
for key, group in groupby(input()):
   print('({}, {})'.format(len(list(group)), key), end=" ")

Compress the String! solution in pypy programming.

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

print " ".join(str((len(list(k)),int(i))) for i,k in groupby(raw_input()))

Problem solution in pypy3 programming.

s=input()
prev_c=''
count=0
Out=()
for c in s :
    if c == prev_c:
        count+=1
    else:
        if prev_c!='':
            print((count+1,int(prev_c)), end=" ")
        prev_c=c
        count=0
print((count+1,int(prev_c)),end=" ")