String compression problem

#1

#include<bits/stdc++.h>
using namespace std;

int main() {

string a,b,v;
cin>>a;

sort(a.begin(),a.end());

b=a;

b.erase(unique(b.begin(), b.end()),b.end()); 

for(int i=0 ; i <b.length();i++)
{
	int n= count (a.begin(),a.end(),b[i]);
		cout << b[i]<<n;

}

return 0;

}

I would like to know what is wrong in this problem ?
out of 4 test cases , There are 2 test cases are passed but test 2 test case got failed. Please advise.

#2

hi @chellapandiyan please share your code by saving it on CB IDE

#3

Hi Ishitagambhir,

file name : stringcompression.cpp

input : aaabbccds
output : a3b2c2d1s1

but when i submit there are 2 test case got failed.

#4

hi @chellapandiyan for input aabbaa
the output should be a2b2a2
and your output is a4b2

#5

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