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Cod sursa(job #145207)
#include<iostream>
#include<fstream>
using namespace std;
ifstream f("permutari.in");
ofstream g("permutari.out");
int x[9],n;
int cck(int i)
{
for(int j=1;j<i;j++)
if (x[j]==x[i]) return 0;
return 1;
}
void afisare()
{
for(int j=1;j<=n;j++)
g<<x[j]<<" ";
g<<"\n";
}
int main()
{
f>>n;
f.close();
int i=1;x[i]=0;
while(i>0)
{
while(x[i]<n)
{
x[i]++;
if (cck(i))
if (i==n) afisare();
else {i++;x[i]=0;}
}
i--;
}
g.close();
return 0;
}