void operator() (const T& x) const {

cout << x << ' ';

}

int ia[9] = {0, 1, 2, 3, 4, 5, 6, 7, 8};

// int ib = iota(ia, ia + 9, 0); // include numeric

vector<int> iv1(ia, ia + 5);

vector<int> iv2(ia, ia + 9);

// 判断两个序列第一个不匹配点 pair（第一个序列的不匹配点，第二个序列的不匹配点）

cout << *(mismatch(iv1.begin(), iv1.end(), iv2.begin()).first);

cout << *(mismatch(iv1.begin(), iv1.end(), iv2.begin()).second);

// 如果序列在区间内相等，equal返回true

cout << equal(iv1.begin(), iv1.end(), iv2.begin());

cout << equal(iv1.begin(), iv1.end(), &ia[3]);

cout << equal(iv1.begin(), iv1.end(), &ia[3], less<int>());

fill(iv1.begin(), iv1.end(), 9);

for_each(iv1.begin(), iv1.end(), display<int>());

fill_n(iv1.begin(), 3, 7); // 从迭代器开始填3个7

for_each(iv1.begin(), iv1.end(), display<int>());

vector<int>::iterator ite1 = iv1.begin();

vector<int>::iterator ite2 = ite1; // 指向7

advance(ite2, 3); // 指向9，前进

iter_swap(ite1, ite2);

cout << *ite1 << ' ' << *ite2 << endl;

for_each(iv1.begin(), iv1.end(), display<int>());

cout << max(*ite1, *ite2) << endl;

cout << min(*ite1, *ite2) << endl;

// 错误写法

cout << *max(ite1, ite2) << endl;

cout << *min(ite1, ite2) << endl;

swap(*iv1.begin(), *iv2.begin());

for_each(iv1.begin(), iv1.end(), display<int>());

for_each(iv2.begin(), iv2.end(), display<int>());

string stra1[] = {"Jamie", "JJHou", "Jason"};

string stra2[] = {"Jamie", "JJHou", "Jerry"};

cout << lexicographical_compare(stra1, stra1 + 2, stra2, stra2 + 2);

cout << lexicographical_compare(stra1, stra1 + 2, stra2, stra2 + 2,

greater<string>());

}