java的二分法怎么写？？

Question

求一个简单的二分法，用Java实现，在线，等急用。谢谢。。。。。。。。。。。。。。。。。。。。。。。

Answer 1

public class BinaryTest {
public static int binary(int[] array,int value) {
int low = 0;
int high = array.length -1;
while (low <= high){
int mid = (low+high)/2;
if (value == array[mid])
return mid;
if (value > array[mid])
low = mid +1;
if (value < array[mid])
high = mid -1;

    }
    return -1;

}

public static void main(String[] args) {
    int[] a = {1,3,6,8,12,34,67,99};
    int value = binary(a,3);
    System.out.println(value);
}

}