摘要：
Given an Android 3x3 key lock screen and two integers m and n, where 1 ≤ m ≤ n ≤ 9, count the total number of unlock patterns of the Android lock scre 阅读全文
posted @ 2016-07-26 23:43
北叶青藤
阅读(321)
评论(0)
推荐(0)
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 @ 2016-07-26 12:38
北叶青藤
阅读(172)
评论(0)
推荐(0)
摘要：
Given a positive integer num, write a function which returns True if num is a perfect square else False. Note: Do not use any built-in library functio 阅读全文
posted @ 2016-07-26 10:37
北叶青藤
阅读(150)
评论(0)
推荐(0)
摘要：
Given a binary tree, collect a tree's nodes as if you were doing this: Collect and remove all leaves, repeat until the tree is empty. Example:Given bi 阅读全文
posted @ 2016-07-26 01:03
北叶青藤
阅读(208)
评论(0)
推荐(0)
摘要：
Given a non-negative number represented as a singly linked list of digits, plus one to the number. The digits are stored such that the most significan 阅读全文
posted @ 2016-07-26 00:25
北叶青藤
阅读(200)
评论(0)
推荐(0)
浙公网安备 33010602011771号