Java中使用二分法排序

具体代码： import java.util.Scanner; //二分法 public class SplitBy2Sort { public static int splitBy2(int[] a， int num) { int low = 0; int high = a.length – 1; int mid; while (true) { // 取中间下标 mid = (low + high) / 2; if (a[mid] == num) { return mid; } else if (low > high) { return -1; } else i