06 2020 档案

[LC] 1146. Snapshot Array
摘要：Implement a SnapshotArray that supports the following interface: SnapshotArray(int length) initializes an array-like data structure with the given len 阅读全文
posted @ 2020-06-15 10:36 xuan_abc 阅读(162) 评论(0) 推荐(0)
[LC] 57. Insert Interval
摘要：Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary). You may assume that the intervals were initia 阅读全文
posted @ 2020-06-15 05:51 xuan_abc 阅读(102) 评论(0) 推荐(0)
[Algo] 99. Dictionary Word I
摘要：Given a word and a dictionary, determine if it can be composed by concatenating words from the given dictionary. Assumptions The given word is not nul 阅读全文
posted @ 2020-06-14 02:23 xuan_abc 阅读(81) 评论(0) 推荐(0)
[LC] 1376. Time Needed to Inform All Employees
摘要：A company has n employees with a unique ID for each employee from 0 to n - 1. The head of the company has is the one with headID. Each employee has on 阅读全文
posted @ 2020-06-12 02:33 xuan_abc 阅读(223) 评论(0) 推荐(0)
[LC] 743. Network Delay Time
摘要：There are N network nodes, labelled 1 to N. Given times, a list of travel times as directed edges times[i] = (u, v, w), where u is the source node, v  阅读全文
posted @ 2020-06-08 07:26 xuan_abc 阅读(170) 评论(0) 推荐(0)
[LC] 951. Flip Equivalent Binary Trees
摘要：For a binary tree T, we can define a flip operation as follows: choose any node, and swap the left and right child subtrees. A binary tree X is flip e 阅读全文
posted @ 2020-06-07 23:46 xuan_abc 阅读(117) 评论(0) 推荐(0)
[LC] 946. Validate Stack Sequences
摘要：Given two sequences pushed and popped with distinct values, return true if and only if this could have been the result of a sequence of push and pop o 阅读全文
posted @ 2020-06-07 23:09 xuan_abc 阅读(108) 评论(0) 推荐(0)
[LC] 846. Hand of Straights
摘要：Alice has a hand of cards, given as an array of integers. Now she wants to rearrange the cards into groups so that each group is size W, and consists 阅读全文
posted @ 2020-06-07 21:59 xuan_abc 阅读(110) 评论(0) 推荐(0)
[LC] 752. Open the Lock
摘要：You have a lock in front of you with 4 circular wheels. Each wheel has 10 slots: '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'. The wheels can rota 阅读全文
posted @ 2020-06-07 11:04 xuan_abc 阅读(136) 评论(0) 推荐(0)
[LC] 332. Reconstruct Itinerary
摘要：Given a list of airline tickets represented by pairs of departure and arrival airports [from, to], reconstruct the itinerary in order. All of the tick 阅读全文
posted @ 2020-06-07 05:44 xuan_abc 阅读(100) 评论(0) 推荐(0)
[LC] 399. Evaluate Division
摘要：Equations are given in the format A / B = k, where A and B are variables represented as strings, and k is a real number (floating point number). Given 阅读全文
posted @ 2020-06-07 03:50 xuan_abc 阅读(83) 评论(0) 推荐(0)
[LC] 914. X of a Kind in a Deck of Cards
摘要：In a deck of cards, each card has an integer written on it. Return true if and only if you can choose X >= 2 such that it is possible to split the ent 阅读全文
posted @ 2020-06-03 09:18 xuan_abc 阅读(143) 评论(0) 推荐(0)