北叶青藤

2016年7月14日

摘要： Insert Intervals Given a non-overlapping interval list which is sorted by start point. Insert a new interval into it, make sure the list is still in o 阅读全文

posted @ 2016-07-14 03:57 北叶青藤阅读(269) 评论(0) 推荐(0)

378. Kth Smallest Number in Sorted Matrix

摘要： Find the kth smallest number in at row and column sorted matrix. Example Given k = 4 and a matrix: [ [1 ,5 ,7], [3 ,7 ,8], [4 ,8 ,9], ] return 5. 分析：阅读全文

posted @ 2016-07-14 02:29 北叶青藤阅读(311) 评论(0) 推荐(0)

2016年7月13日

29. Divide Two Integers

摘要： Divide two integers without using multiplication, division and mod operator. If it is overflow, return 2147483647 Example Given dividend = 100 and div 阅读全文

posted @ 2016-07-13 22:39 北叶青藤阅读(170) 评论(0) 推荐(0)

Valid Sudoku

摘要： Determine whether a Sudoku is valid. The Sudoku board could be partially filled, where empty cells are filled with the character .. Notice A valid Sud 阅读全文

posted @ 2016-07-13 12:02 北叶青藤阅读(211) 评论(0) 推荐(0)

Length of Last Word

摘要： Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string. If the last word 阅读全文

posted @ 2016-07-13 11:13 北叶青藤阅读(164) 评论(0) 推荐(0)

32. Valid Parentheses & Longest Valid Parentheses

摘要： Valid Parentheses Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. Example The b 阅读全文

posted @ 2016-07-13 11:03 北叶青藤阅读(262) 评论(0) 推荐(0)

50. Pow(x, n)

摘要： Implement pow(x, n). Notice You don't need to care about the precision of your answer, it's acceptable if the expected answer and your answer 's diffe 阅读全文

posted @ 2016-07-13 10:43 北叶青藤阅读(191) 评论(0) 推荐(0)

200. Number of Islands I & II

摘要： Given a boolean 2D matrix, find the number of islands. Notice 0 is represented as the sea, 1 is represented as the island. If two 1 is adjacent, we co 阅读全文

posted @ 2016-07-13 10:39 北叶青藤阅读(237) 评论(0) 推荐(0)

Restore IP Addresses

摘要： Given a string containing only digits, restore it by returning all possible valid IP address combinations. Given a string containing only digits, rest 阅读全文

posted @ 2016-07-13 09:56 北叶青藤阅读(208) 评论(0) 推荐(0)

211. Add and Search Word - Data structure design

摘要： Design a data structure that supports the following two operations: addWord(word) andsearch(word) search(word) can search a literal word or a regular 阅读全文

posted @ 2016-07-13 05:58 北叶青藤阅读(256) 评论(0) 推荐(0)

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