17 lines
292 B
C++
17 lines
292 B
C++
#include "nr.h"
|
|
|
|
void NR::reverse(Vec_IO_INT &iorder, Vec_I_INT &n)
|
|
{
|
|
int nn,j,k,l,itmp;
|
|
|
|
int ncity=iorder.size();
|
|
nn=(1+((n[1]-n[0]+ncity) % ncity))/2;
|
|
for (j=0;j<nn;j++) {
|
|
k=(n[0]+j) % ncity;
|
|
l=(n[1]-j+ncity) % ncity;
|
|
itmp=iorder[k];
|
|
iorder[k]=iorder[l];
|
|
iorder[l]=itmp;
|
|
}
|
|
}
|