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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. string appendNext(string str){
  5.     string str1;
  6.     char ch = str[0];
  7.     int chCount = 1;
  8.     for(int i = 1; i <= str.size(); i++){
  9.         if (str[i] == ch){
  10.             chCount++;
  11.         }
  12.         else {
  13.             char chr = chCount + '0';
  14.             str1 = str1 + chr;
  15.             str1 = str1 + ch;
  16.             ch = str[i];
  17.             chCount = 1;
  18.         }
  19.     }
  20.     return str1;
  21. }
  22.  
  23. string countAndSay(int n) {
  24.     if (n == 1) {
  25.         return "1";
  26.     }
  27.     string str1 = "1";
  28.     string strn;
  29.     for (int i = 1; i < n; i++){
  30.         strn = appendNext(str1);
  31.         str1 = strn;
  32.     }
  33.     return strn;
  34. }
  35.  
  36. int main() {
  37. 	cout << countAndSay(5);
  38. 	return 0;
  39. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/tbYXUM
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
secret

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