int[] array = {  112  ,114  ,118  ,123  ,132  ,135  ,146  ,155  ,162  ,165  };

System.out.print("请输入待查找元素：  ");

int low = 0, suo = 0, high = array.length;

Scanner scanner = new Scanner(System.in);

int x = scanner.nextInt();

while (low <= high) {

suo = (low + high) / 2;

if (array[suo] < x)

low = suo + 1;

else

high = suo - 1;

if (array[suo] == x) {

System.out.println("此元素在数组中的索引为：：" + suo);

}

}

我这个代码我运行了没有问题，可是我发现将代码中high = array.length改为high = array.length-1再运行也没有问题，那么究竟哪个比较好点？