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  1. #include <iostream>
  2. #include <set>
  3.  
  4. using namespace std;
  5.  
  6. void print(set<int>& s)
  7. {
  8.     cout << "\ns = {";
  9.     auto p = s.begin();
  10.     while (p != s.end())
  11.         cout << *p++ << ",}"[p==s.end()];
  12. }
  13.  
  14. void print(multiset<int>& s)
  15. {
  16.     cout << "\nms = {";
  17.     auto p = s.begin();
  18.     while (p != s.end())
  19.         cout << *p++ << ",}"[p==s.end()];
  20. }
  21.  
  22. int main()
  23. {
  24.  
  25.     int a[] = { 7, 4, 9, 1, 1, 4, 8 };
  26.     set<int> s(a, a + 7);
  27.     print(s);
  28.     s.insert(3);
  29.     print(s);
  30.     s.erase(3);
  31.     print(s);
  32.     set<int>::iterator ix = s.find(4);
  33.     s.erase(ix);
  34.     print(s);
  35.     s.erase(s.find(7), s.find(9));
  36.     print(s);
  37.     cout << "\nCount of 1: " << s.count(1);
  38.     cout << "\nCount of 2: " << s.count(2);
  39.     s.insert(2);
  40.     s.insert(4);
  41.     s.insert(5);
  42.     s.insert(7);
  43.     print(s);
  44.  
  45.     auto it = s.lower_bound(5);
  46.     cout << "\nThe lower bound of 5 is " << *it << ".";
  47.     it = s.lower_bound(6);
  48.     cout << "\nThe lower bound of 6 is " << *it << ".";
  49.     it = s.lower_bound(10);
  50.     if (it == s.end()) cout << "\nThe lower bound of 10 is at the end of the range.";
  51.  
  52.     it = s.upper_bound(5);
  53.     cout << "\nThe upper bound of 5 is " << *it << ".";
  54.     it = s.upper_bound(6);
  55.     cout << "\nThe upper bound of 6 is " << *it << ".";
  56.     it = s.upper_bound(10);
  57.     if (it == s.end()) cout << "\nThe upper bound of 10 is at the end of the range.";
  58.  
  59.     auto it_pair  = s.equal_range(5);
  60.     cout << "\nThe bounds of 5 are " << *it_pair.first << " and " << *it_pair.second << ".";
  61.  
  62.     int b[] = {1, 1, 2, 3, 4, 4, 4, 5};
  63. 	multiset<int> ms(b, b+8);
  64. 	print(ms);
  65.  
  66. 	auto p = ms.lower_bound(4);
  67. 	cout<<"\n";
  68.     while (p != ms.upper_bound(4))
  69.         cout << *p++ << " ";
  70. }
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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s = {1,4,7,8,9}
s = {1,3,4,7,8,9}
s = {1,4,7,8,9}
s = {1,7,8,9}
s = {1,9}
Count of 1: 1
Count of 2: 0
s = {1,2,4,5,7,9}
The lower bound of 5 is 5.
The lower bound of 6 is 7.
The lower bound of 10 is at the end of the range.
The upper bound of 5 is 7.
The upper bound of 6 is 7.
The upper bound of 10 is at the end of the range.
The bounds of 5 are 5 and 7.
ms = {1,1,2,3,4,4,4,5}
4 4 4
https://ideone.com/l0lu14
language:
C++14 (clang 8.0)
created:
5 years ago
visibility:
public

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