count occurrences of character in string c++
std::string s = "a_b_c";
size_t n = std::count(s.begin(), s.end(), '_'); // n=2count occurrences of character in string c++
std::string s = "a_b_c";
size_t n = std::count(s.begin(), s.end(), '_'); // n=2lists occurrences of characters in the string c++
int d[27]={0};
for (int i = 0; i < str.length(); i++) //AABBCC
d[str[i] - 'A']++;
for (int i = 0; i < str.length(); i++)
if (d[str[i] - 'A'] != 0) {
cout << str[i] << " "<< d[str[i] - 'A'] << " "; //A 2 B 2 C 2
}Copyright © 2021 Codeinu
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