C ++ STL中的multiset upper_bound()与示例
在本教程中,我们将讨论一个程序,以了解C++STL中的多集upper_bound()。
函数upper_bound()返回指向元素的指针,该元素大于作为参数提供的元素,否则返回指向容器中最后一个元素的指针。
示例
#include <bits/stdc++.h>
using namespace std;
int main(){
multiset<int> s;
s.insert(1);
s.insert(3);
s.insert(3);
s.insert(5);
s.insert(4);
cout << "The multiset elements are: ";
for (auto it = s.begin(); it != s.end(); it++)
cout << *it << " ";
auto it = s.upper_bound(3);
cout << "\nThe upper bound of key 3 is ";
cout << (*it) << endl;
it = s.upper_bound(2);
cout << "The upper bound of key 2 is ";
cout << (*it) << endl;
it = s.upper_bound(10);
cout << "The upper bound of key 10 is ";
cout << (*it) << endl;
return 0;
}输出结果
The multiset elements are: 1 3 3 4 5 The upper bound of key 3 is 4 The upper bound of key 2 is 3 The upper bound of key 10 is 5
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