2016年7月18日
Permutation Sequence
摘要： Given n and k, return the k-th permutation sequence. Notice n will be between 1 and 9 inclusive. Given n and k, return the k-th permutation sequence. 阅读全文
posted @ 2016-07-18 12:57 北叶青藤 阅读(246) 评论(0) 推荐(0)
54. Spiral Matrix I & II
摘要： Spiral Matrix I Given an integer n, generate a square matrix filled with elements from 1 to n^2 in spiral order. Example Given n = 3, You should retur 阅读全文
posted @ 2016-07-18 11:44 北叶青藤 阅读(209) 评论(0) 推荐(0)
126. Word Ladder I & II
摘要： Word Ladder I Given two words (start and end), and a dictionary, find the length of shortest transformation sequence from start to end, such that: Onl 阅读全文
posted @ 2016-07-18 07:03 北叶青藤 阅读(369) 评论(0) 推荐(0)
130. Surrounded Regions
摘要： Given a 2D board containing 'X' and 'O', capture all regions surrounded by 'X'. A region is captured by flipping all 'O''s into 'X''s in that surround 阅读全文
posted @ 2016-07-18 05:43 北叶青藤 阅读(217) 评论(0) 推荐(0)