Cokewithice @ 2021-12-26 16:49:32
#include<bits/stdc++.h>
using namespace std;
map <char,int> a;string n;
int main(){
cin>>n;
for(int i=0;i<=n.size();i++)a[n[i]]++;
for(int i=0;i<=n.size();i++)
{if(a[n[i]]==1){cout<<n[i];return 0;}}
cout<<"no";return 0;}
by Cokewithice @ 2021-12-26 16:49:54
在线等
by Lucky_M @ 2021-12-26 17:05:33
你这写的,我竟没看懂。。
by Lucky_M @ 2021-12-26 17:07:14
#include<bits/stdc++.h>
using namespace std;
int vis[114514];
string ch;
int main(){
cin>>ch;
for(int i=0;i<ch.size();i++){
vis[ch[i]-'a'+1]++;
}
for(int i=0;i<ch.size();i++){
if(vis[ch[i]-'a'+1]==1){
printf("%c",ch[i]);
return 0;
}
}
printf("no");
return 0;
}
这是我的代码,可参考
by Lucky_M @ 2021-12-26 17:07:34
@15LIHONGJIAN
by Cokewithice @ 2021-12-26 17:14:32
好的,谢谢
by _RedForest @ 2021-12-26 17:31:19
i<n.size()