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How to get an equal range of an element of a set in C++

1 Answer

0 votes
#include <iostream>  
#include <set> 

using std::set;
using std::cout;
using std::endl;

void printList(const set<int>& flist)
{
	for (auto elem : flist) {
		cout << elem << ' ';
	}
	cout << endl;
}

int main()
{
	set<int> st = { 1, 2, 3, 5, 6, 7 };

	printList(st);

	cout << "equal_range(3).first = " << *st.equal_range(3).first << 
		    " equal_range(3).second = " << *st.equal_range(3).second << endl;
	cout << "equal_range(4).first = " << *st.equal_range(4).first << 
		    " equal_range(4).second = " << *st.equal_range(4).second << endl;
	cout << "equal_range(5).first = " << *st.equal_range(5).first << 
		    " equal_range(5).second = " << *st.equal_range(5).second << endl;

	return 0;
}

/*
run:

1 2 3 5 6 7
equal_range(3).first = 3 equal_range(3).second = 5
equal_range(4).first = 5 equal_range(4).second = 5
equal_range(5).first = 5 equal_range(5).second = 6

*/

 




answered Jan 9 by avibootz
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