为什么2在数组中它返回的是-3
//int[] arr = {2,1,5,9,4,7,8,6,3};
System.out.println(Arrays.binarySearch(arr, 2));//-3
System.out.println(Arrays.binarySearch(arr, 1));//1
为什么2在数组中它返回的是-3
//int[] arr = {2,1,5,9,4,7,8,6,3};
System.out.println(Arrays.binarySearch(arr, 2));//-3
System.out.println(Arrays.binarySearch(arr, 1));//1