xuan_abc

2020年6月7日

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(89) 评论(0) 推荐(0) 编辑

[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(82) 评论(0) 推荐(0) 编辑

2020年6月3日

[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(137) 评论(0) 推荐(0) 编辑

2020年4月28日

[LC] 227. Basic Calculator II

摘要： Implement a basic calculator to evaluate a simple expression string. The expression string contains only non-negative integers, +, -, *, / operators a 阅读全文

posted @ 2020-04-28 07:37 xuan_abc 阅读(172) 评论(0) 推荐(0) 编辑

[LC] 36. Valid Sudoku

摘要： Determine if a 9x9 Sudoku board is valid. Only the filled cells need to be validated according to the following rules: Each row must contain the digit 阅读全文

posted @ 2020-04-28 06:48 xuan_abc 阅读(119) 评论(0) 推荐(0) 编辑

[LC] 1360. Number of Days Between Two Dates

摘要： Write a program to count the number of days between two dates. The two dates are given as strings, their format is YYYY-MM-DD as shown in the examples 阅读全文

posted @ 2020-04-28 01:52 xuan_abc 阅读(156) 评论(0) 推荐(0) 编辑

2020年4月27日

[LC] 1219. Path with Maximum Gold

摘要： In a gold mine grid of size m * n, each cell in this mine has an integer representing the amount of gold in that cell, 0 if it is empty. Return the ma 阅读全文

posted @ 2020-04-27 23:57 xuan_abc 阅读(151) 评论(0) 推荐(0) 编辑

[LC] 1214. Two Sum BSTs

摘要： Given two binary search trees, return True if and only if there is a node in the first tree and a node in the second tree whose values sum up to a giv 阅读全文

posted @ 2020-04-27 11:55 xuan_abc 阅读(194) 评论(0) 推荐(0) 编辑

[LC] 535. Encode and Decode TinyURL

摘要： TinyURL is a URL shortening service where you enter a URL such as https://leetcode.com/problems/design-tinyurl and it returns a short URL such as http 阅读全文

posted @ 2020-04-27 11:41 xuan_abc 阅读(97) 评论(0) 推荐(0) 编辑

[LC] 733. Flood Fill

摘要： An image is represented by a 2-D array of integers, each integer representing the pixel value of the image (from 0 to 65535). Given a coordinate (sr, 阅读全文

posted @ 2020-04-27 09:54 xuan_abc 阅读(127) 评论(0) 推荐(0) 编辑

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