全排列问题:
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#include"stdafx.h"
#include<math.h>
#include<stdio.h>
#include<iostream>
usingnamespacestd;
voidswap(int&a,int&b)
{
inttmp;
tmp=a;
a=b;
b=tmp;
}
voidRerange(inta[],intm,intn)
{
if(m==n)
{
for(intj=0;j<=m;++j)
cout<<a[j]<<'/t';
cout<<endl;
}
else
{
for(inti=m;i<=n;++i)
{
swap(a[m],a[i]);
Rerange(a,m+1,n);
swap(a[m],a[i]);
}
}
}
intmain(void)
{
inta[]={1,2,3},tmp;
Rerange(a,0,2);
cin>>tmp;
return0;
}
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