题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
#include <iostream> #include <string> using namespace std; int main() { string str; int l, r; cin >> str; if (str.length() == 1) cout << '1'; else{ for (l = 0; l < str.length(); l++){ for (r = l + 1; r < str.length(); r++){ if (str[l] == str[r]) { str.erase(str.begin() + r); r--; } } } } // cout << endl; cout << str.length() << endl; // cout << str; }