Problem Description There are some students in a class, Can you help teacher find the highest student .
Input There are some cases. The first line contains an integer t, indicate the cases; Each case have an integer n ( 1 ≤ n ≤ 100 ) , followed n students’ height.
Output For each case output the highest height, the height to two decimal plases;
Sample Input 2 3 170.00 165.00 180.00 4 165.00 182.00 172.00 160.00
Sample Output 180.00 182.00
同一个代码！这个运行时间正好是在超时的边界！~
代码语言：javascript复制import java.util.Scanner;
public class Main {
static Scanner sc=new Scanner(System.in);
public static void main(String[] args) {
int n=sc.nextInt();
while(n-->0){
int m=sc.nextInt();
double[] a=new double[m];
double max=a[0]=sc.nextDouble();
for(int i=1;i<a.length;i ){
a[i]=sc.nextDouble();
if(max<a[i]){
max=a[i];
}
}
System.out.printf("%.2f",max);
System.out.println();
}
}
}
