sortCmpFunc.cpp

//
// Created by wbzhang on 2020/9/22.
//

// sort algorithm example
#include <iostream>     // std::cout
#include <algorithm>    // std::sort
#include <vector>       // std::vector

bool myfunction (int i,int j) { return (i<j); }

struct myclass {
	bool operator() (int i,int j) { return (i<j);}
} myobject;

int main () {
	int myints[] = {32,71,12,45,26,80,53,33};
	std::vector<int> myvector (myints, myints+8);               // 32 71 12 45 26 80 53 33

	// using default comparison (operator <):
	std::sort (myvector.begin(), myvector.begin()+4);           //(12 32 45 71)26 80 53 33

	// using function as comp
	std::sort (myvector.begin()+4, myvector.end(), myfunction); // 12 32 45 71(26 33 53 80)

	// using object as comp
	std::sort (myvector.begin(), myvector.end(), myobject);     //(12 26 32 33 45 53 71 80)

	// print out content:
	std::cout << "myvector contains:";
	for (std::vector<int>::iterator it=myvector.begin(); it!=myvector.end(); ++it)
		std::cout << ' ' << *it;
	std::cout << '\n';

	return 0;
}