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  1. #include<iostream>
  2. #include<string.h>
  3. using namespace std;
  4. const int n=1e7+9;
  5. char s[n];
  6. int main (){
  7.     cin>> s;
  8.     int len = strlen(s);
  9.     int frequency[26];
  10.     for (int i=0; i<26; i++){
  11.         frequency[i]= 0;
  12.     }
  13.     for (int i=0; i<len; i++){
  14.         int chr_rank = s[i]-'a';
  15.         frequency[chr_rank]++;
  16.  
  17.     }
  18.     for (char ch= 'a'; ch<='z'; ch++){
  19.         int chr_rank = ch - 'a';
  20.         if (frequency[chr_rank]>0){
  21.             cout << ch << ':' << frequency [chr_rank] << endl;
  22.         }
  23.     }
  24.     return 0;
  25.  
  26. }
  27.  
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
copy 
regff
stdout
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e:1
f:2
g:1
r:1
https://ideone.com/e7NRtF
language:
C++14 (clang 8.0)
created:
10 days ago
visibility:
public

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