#02常用的拷贝和替换算法
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <vector>
#include<algorithm>
#include<time.h>
using namespace std;
struct MyPrint01{
void operator()(int val){
cout << val << " ";
}
};
//copy swap
void test01(){
vector<int> v1;
srand((unsigned int)time(NULL));
for (int i = 0; i < 10; i++){
v1.push_back(rand() % 10);
}
/*
_OutIt copy(_InIt _First, _InIt _Last,_OutIt _Dest)
*/
vector<int> v2;
v2.resize(v1.size());
copy(v1.begin(), v1.end(), v2.begin());
for_each(v2.begin(), v2.end(), MyPrint01());
//swap
vector<int> v3;
for (int i = 0; i < 10; i++){
v3.push_back(rand() % 10);
}
cout << "--------------------" << endl;
cout << "交换之前：" << endl;
for_each(v3.begin(), v3.end(), MyPrint01()); cout << endl;
for_each(v2.begin(), v2.end(), MyPrint01()); cout << endl;
cout << "--------------------" << endl;
swap(v3,v2);
cout << "交换之后：" << endl;
for_each(v3.begin(), v3.end(), MyPrint01()); cout << endl;
for_each(v2.begin(), v2.end(), MyPrint01()); cout << endl;
}
//replace replace_if
struct MyCompare02{
bool operator()(int val){
return val > 5;
}
};
void test02(){
vector<int> v1;
for (int i = 0; i < 10; i++){
v1.push_back(i);
}
for_each(v1.begin(), v1.end(), MyPrint01()); cout << endl;
replace(v1.begin(),v1.end(),5,100);
for_each(v1.begin(), v1.end(), MyPrint01()); cout << endl;
replace_if(v1.begin(), v1.end(), MyCompare02(), 200);
for_each(v1.begin(), v1.end(), MyPrint01()); cout << endl;
}
int main(void) {
//test01();
test02();
return 0;
}
