摘要：
Given a binary tree, return the values of its boundary in anti-clockwise direction starting from root. Boundary includes left boundary, leaves, and ri 阅读全文
posted @ 2017-11-23 16:53
jxr041100
阅读(160)
评论(0)
推荐(0)
摘要：
Check whether the original sequence org can be uniquely reconstructed from the sequences in seqs. The org sequence is a permutation of the integers fr 阅读全文
posted @ 2017-11-23 16:51
jxr041100
阅读(320)
评论(1)
推荐(0)
摘要：
Design an algorithm to encode a list of strings to a string. The encoded string is then sent over the network and is decoded back to the original list 阅读全文
posted @ 2017-11-23 16:49
jxr041100
阅读(119)
评论(0)
推荐(0)
摘要：
You are given a m x n 2D grid initialized with these three possible values. Fill each empty room with the distance to its nearest gate. If it is impos 阅读全文
posted @ 2017-11-23 16:48
jxr041100
阅读(134)
评论(0)
推荐(0)
摘要：
Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to check whether these edges mak 阅读全文
posted @ 2017-11-23 16:46
jxr041100
阅读(109)
评论(0)
推荐(0)
摘要：
Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],...] (si < ei), find the minimum number of conference room 阅读全文
posted @ 2017-11-23 16:45
jxr041100
阅读(83)
评论(0)
推荐(0)
摘要：
A group of two or more people wants to meet and minimize the total travel distance. You are given a 2D grid of values 0 or 1, where each 1 marks the h 阅读全文
posted @ 2017-11-23 16:44
jxr041100
阅读(145)
评论(0)
推荐(0)
摘要：
Suppose you are at a party with n people (labeled from 0 to n - 1) and among them, there may exist one celebrity. The definition of a celebrity is tha 阅读全文
posted @ 2017-11-23 16:43
jxr041100
阅读(137)
评论(0)
推荐(0)
摘要：
Given a binary tree, count the number of uni-value subtrees. A Uni-value subtree means all nodes of the subtree have the same value. For example:Given 阅读全文
posted @ 2017-11-23 16:41
jxr041100
阅读(118)
评论(0)
推荐(0)
摘要：
Given a string, we can "shift" each of its letter to its successive letter, for example: "abc" -> "bcd". We can keep "shifting" which forms the sequen 阅读全文
posted @ 2017-11-23 16:40
jxr041100
阅读(131)
评论(0)
推荐(0)
浙公网安备 33010602011771号