2017年2月28日
Leetcode 42. Trapping Rain Water
摘要： Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. 阅读全文
posted @ 2017-02-28 11:05 lettuan 阅读(131) 评论(0) 推荐(0)
Leetcode 36. Valid Sudoko
摘要： Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules. The Sudoku board could be partially filled, where empty cells are filled wit 阅读全文
posted @ 2017-02-28 07:24 lettuan 阅读(115) 评论(0) 推荐(0)
Leetcode 6. ZigZag conversion
摘要： The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font 阅读全文
posted @ 2017-02-28 06:29 lettuan 阅读(137) 评论(0) 推荐(0)