水题,求最大值最小值
#include <iostream> #include <cstdio> #include <cstring> #include <cstdlib> using namespace std; int main() { //freopen("D:\\t.txt", "r", stdin); int t; scanf("%d", &t); while (t--) { int mind, maxd, a, n; scanf("%d", &n); scanf("%d", &a); mind = a; maxd = a; for (int i = 1; i < n; i++) { scanf("%d", &a); if (mind > a) mind = a; if (maxd < a) maxd = a; } printf("%d\n", (maxd - mind) * 2); } return 0; }