Created
May 25, 2015 05:16
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set.cpp
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// | |
// set.cpp | |
// CplusplusPractice | |
// | |
// Created by masai on 2015/05/25. | |
// Copyright (c) 2015年 masai. All rights reserved. | |
// | |
#include <iostream> | |
#include <set> | |
using namespace std; | |
int main(int argc, char* argv[]){ | |
set<int> s; | |
// insert | |
s.insert(1); | |
s.insert(2); | |
s.insert(3); | |
s.insert(4); | |
s.insert(5); | |
// setの要素数 | |
cout << "set cnt is " << s.size() << endl; | |
// 保持している要素は、iteratorを受け取ることができる | |
set<int>::iterator i = s.find(3); | |
if(i == s.end()){ | |
cout << "can not find." << endl; | |
}else{ | |
cout << "find " << *i << endl; | |
} | |
// 保持していない要素は、iterator end()を受け取ることができる | |
set<int>:: iterator i_c = s.find(10); | |
if(i_c == s.end()){ | |
cout << "can not find 10" << endl; | |
}else{ | |
cout << *i << endl; | |
} | |
// 要素の削除 | |
s.erase(3); | |
set<int>:: iterator i_e = s.find(3); | |
if(i_e == s.end()){ | |
cout << "can not find 3" << endl; | |
}else{ | |
cout << *i << endl; | |
} | |
// setの要素数 | |
cout << "set cnt is " << s.size() << endl; | |
} |
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