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;
getline(cin, str);
int comp[128] = {0};
int count = 0;
for (int i = 0; i < str.size(); i++){
if (comp[str[i]] != 1){
comp[str[i]] = 1;
count++;
}
}
cout << count << endl;
return 0;
}
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