#include<iostream>
#include<string>
#include<map>
using namespace std;
char OneNum(char *s) {
map<char, int> m;
int i = 0;
while(s[i] != '\0') {
m[s[i]]++;
i++;
}
i = 0;
while (s[i] != '\0'){
if (m[s[i]] == 1) return s[i];
i++;
}
return '\0';
}
int main() {
cout << OneNum("abaccdeff") << endl;
return 0;
}
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最新推荐文章于 2023-03-10 13:06:52 发布