#include "iostream"
#include "algorithm"
using namespace std;
int main()
{
int TestCase;
cin >> TestCase;
while (TestCase--)
{
int StoreNum, distance = 0;
cin >> StoreNum;
int *pos = new int[StoreNum];
for (int i = 0; i < StoreNum; i++)
cin >> pos[i];
sort(pos, pos+StoreNum);
for (int i = 0; i < StoreNum-1; i++)
distance += pos[i+1] - pos[i];
cout << distance*2 << endl;
}
}
sicily 1433
最新推荐文章于 2016-04-24 22:58:00 发布