N과 M (4) - 15652

문제 : 

https://www.acmicpc.net/problem/15652

15652번: N과 M (4)

코드 :

#include <iostream>

using namespace std;

int arr[10];
int index;
int start;

void solution(int start, int index, int n, int m)
{
	//탈출조건
	if (index == m)
	{
		for (int i = 0; i < m; i++)
		{
			cout << arr[i] << " ";
		}
		cout << "\n";
		return;
	}

	//1~N만큼 반복
	for (int i = start; i <= n; i++)
	{
		arr[index] = i;
		solution(i, index + 1, n, m);
	}
}

int main()
{
	int n, m;
	cin >> n >> m;

	solution(1, 0, n, m);

	return 0;
}