Question

How to reverse part of a vector container with int numbers in C++

Answer 1

#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

int main()
{
	vector<int> vec = { 4, 5, 2, 1, 7, 3, 6, 0 };

	
	sort(vec.begin(), vec.end());
	for (auto elem : vec) {
		cout << elem << ' ';
	}
	std::cout << std::endl;

	auto index3 = find(vec.begin(), vec.end(), 3);

	reverse(index3, vec.end());

	for (auto elem : vec) {
		cout << elem << ' ';
	}
	std::cout << std::endl;

	return 0;
}

/*
run:

0 1 2 3 4 5 6 7
0 1 2 7 6 5 4 3

*/

 

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