2016年7月31日
LeetCode- Count Numbers with Unique Digits
摘要： Given a non-negative integer n, count all numbers with unique digits, x, where 0 ≤ x < 10n. Example: Given n = 2, return 91. (The answer should be the 阅读全文
posted @ 2016-07-31 08:12 LiBlog 阅读(124) 评论(0) 推荐(0) 编辑