从一个数组里找出最大，最小值，并自动求出和

/*
* 这是个十个数值求最大最小和和的程序
*/
public class Main {

public static void main(String[] args) {
int[] arr = { 2, 42, 21, 65, 3, 15, 30, 58, 47, 68 };
int max = arr[0];
int min = arr[0];
int sum = 0;
int i = 0;
for (i = 0; i < arr.length; i++) {
if (max < arr[i]) {
max = arr[i];
}
if (min > arr[i]) {
min = arr[i];

}
sum = sum + arr[i];
}

System.out.println("max:" + max);
System.out.println("min: " + min);
System.out.println("sum: " + sum);
}
}