Q11364: Parking

原文
http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2349
中譯
http://luckycat.kshs.kh.edu.tw/homework/q11364.htm

#include "stdio.h"

int main()
{
  int t,n;
  scanf(" %d",&t);
  while( t )
  {
 int i,min=100,max=0,x;
 scanf(" %d",&n);
 for(i = 0;i < n;i++)
 {
   scanf(" %d",&x);
   if( x > max )
  max = x;
   if( x < min )
  min = x;
 }
 printf("%d\n",(max - min) * 2);
 t--;
  }
  return 0;
}