Cod sursa(job #440664)

Utilizator rares192Preda Rares Mihai rares192 Data 12 aprilie 2010 12:38:15
Problema Generare de permutari Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.55 kb
#include<stdio.h>

FILE *f=freopen("permutari.in", "r", stdin);
FILE *g=freopen("permutari.out", "w", stdout);

int a[10], n;
bool v[10];

void back(int k);
void afisare();

int main()
{
	fscanf(f, "%d", &n);
	back(0);
    return 0;
}	

void back(int k)
{
	if(k==n)
		afisare();
	else
	{
		for(int i=1; i<=n; i++)
		{
			if(v[i]==false)
			{
				a[k]=i;
				v[i]=true;
		        back(k+1);
			    v[i]=false;
			}
		}
	}
}

void afisare()
{
	int i;
	for(i=0; i<n; i++)
		fprintf(g, "%d ", a[i]);
	    fprintf(g, "\n");
}