2025-02-02 19:49:59
发布于：广东
这道题一定得用set解吗？
全部评论 3
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正片开始：
#include<iostream>
using namespace std;
int main(){
int n,a[1001]={0},x,m=0;
cin >> n;
for(int i=0;i<n;i++){
cin >> x;
a[x];
}
for(int i=0;i<1001;i){
if(a[i]>0)
m++;
}
cout << m << endl;
for(int i=0;i<1001;i++){
if(a[i]>0)
cout << i << " ";
}
}2025-04-13 来自 上海
0#include <bits/stdc++.h>
using namespace std;
int n,a[105],ans;
int main() {
cin>>n;
for(int i=1;i<=n;i++){
cin>>a[i];
}
sort(a+1,a+1+n);
for(int i=1;i<=n;i++){
if(a[i]!=a[i-1]){
ans++;
}
}
cout<<ans<<endl;
for(int i=1;i<=n;i++){
if(a[i]!=a[i-1]){
cout<<a[i]<<" ";
}
}
return 0;
}2025-03-29 来自 浙江
0
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