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  1.  #include<bits/stdc++.h>
  2.     using namespace std;
  3.      int main(){
  4.       int t; cin>>t;
  5.       while(t--){
  6.       	int n;
  7.       	cin>>n;
  8.        string s;cin>>s;string g;int count=0;
  9.  
  10.         g=s;
  11.        sort(g.begin(),g.end());
  12.  
  13.       for(int i=0;i<s.size();i++){
  14.           if(g[i]!=s[i]){
  15.               count++;
  16.           }
  17.       }
  18.       cout<<count<<endl;
  19.       }
  20.      }
  21.  
Success #stdin #stdout 0.01s 5396KB
comments (?)
stdin
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4
3
lol
10
codeforces
5
aaaaa
4
dcba
stdout
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2
6
0
4
https://ideone.com/pVZFaK
language:
C++14 (clang 8.0)
created:
1 year ago
visibility:
public

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