给数组{1, 9, 8, 7, 4}按从小到大的顺序排序（选择排序） 给数组{1, 9, 8, 7, 4}按从小到大的顺序排序（选择排序）-{1, 9, 8​ ​ , 7, 4} from small to large order of (order) to the array {1, 9, 8​ ​ , 7, 4} from small to large order of (order) to the array