递增排序，递减排序，非递减排序，非递增排序（转载)

转载于https://blog.csdn.net/qq_14998713/article/details/52728894

1,2,3,4,5,.:递增排列
9,8,7,6,5.:递减排列
1,2,3,3,4,5,8,8,.:非递减排列
9,8,7,7,6,5,5,2,1,.:非递增排列