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31 lines
659 B
31 lines
659 B
#include<bits/stdc++.h>
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using namespace std;
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int main() {
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set<int>s;
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int n;
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cin>>n;
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for(int i=1; i<=n; i++) {
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int x;
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cin>>x;
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s.insert (x);
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}
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set<int>::iterator it;
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for(it=s.begin (); it!=s.end (); it++) {
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printf("%d\n",*it);
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}
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//s.end()没有值
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cout<<"s.begin() "<<*s.begin ()<<endl;
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//lower_bound()--返回指向大于（或等于）某值的第一个元素的迭代器
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cout<<"lower_buond 3 "<<*s.lower_bound (3)<<endl;
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//upper_bound()--返回大于某个值元素的迭代器
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cout<<"upper_bound 3 "<<*s.upper_bound (3)<<endl;
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//find()--返回一个指向被查找到元素的迭代器
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cout<<"find() 3 "<<*s.find (3)<<endl;
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cout<<"s.size() "<<s.size ()<<endl;
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return 0;
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}
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