JAVA定义一个容纳四个数的double类型数组，直字形定义输出数组中的最小值

double[] arr = new double[4];
arr[0] = 3.5;
arr[1] = 2.8;
arr[2] = 4.2;
arr[3] = 1.9;

double min = arr[0];
for(int i=1; i<arr.length; i++){
if(arr[i] < min){
min = arr[i];
}
}
System.out.println("数组中最小值为：" + min);