数据结构问题给定未排序的数组A,大小为n,请先把数组排好序,然后用二分查找定数X[解决办法]
int[] test = new int[] { 1, 6, 7, 9, 3, 5, 2 }; Arrays.sort(test); System.out.println(Arrays.toString(test)); int index = Arrays.binarySearch(test, 5); System.out.println(index);[解决办法]楼上正解,此贴可结