最大值和最小值

#include<iostream>
#include<deque>
#include<algorithm>

using namespace std;

bool absless(int elem1, int elem2)//有两个参数，返回值是布尔类型
{
	//比较大小，所以是绝对值进行比较
	return abs(elem1) < abs(elem2);
}

int main()
{
	deque<int> ideq;
	for (int i = 2; i <= 8; ++i)
		ideq.insert(ideq.end(), i);
	for (int i = -3; i <= 5; ++i)
		ideq.insert(ideq.end(), i);
	ideq.insert(ideq.end(), -12);
	for (auto iter = ideq.begin(); iter != ideq.end(); ++iter)
		cout << *iter<<" ";

	//返回值是一个迭代器，需要进行解引用
	cout << endl;
	cout << "最小值：" << *min_element(ideq.begin(), ideq.end());
	cout << endl;
	deque<int>::iterator result = min_element(ideq.begin(), ideq.end());
	cout << "min:" <<*result<< endl;
	cout << "最大值：" << *max_element(ideq.begin(), ideq.end());
	cout << endl;

	cout << "绝对最小值:" << *min_element(ideq.begin(), ideq.end(), absless)<<endl;
	cout << "绝对最大值:" << *max_element(ideq.begin(), ideq.end(), absless) << endl;

	system("pause");
	return 0;
}