2018年6月11日
172. Factorial Trailing Zeroes（阶乘中0的个数 数学题）
摘要： Given an integer n, return the number of trailing zeroes in n!. Example 1: Input: 3 Output: 0 Explanation: 3! = 6, no trailing zero. Example 2: Input: 阅读全文
posted @ 2018-06-11 16:39 乐乐章 阅读(178) 评论(0) 推荐(0)
171. Excel Sheet Column Number(简单数学题)
摘要： Given a column title as appear in an Excel sheet, return its corresponding column number. For example: A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 阅读全文
posted @ 2018-06-11 14:41 乐乐章 阅读(227) 评论(0) 推荐(0)
200. Number of Islands(DFS)
摘要： Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water and is formed by connecting adjacen 阅读全文
posted @ 2018-06-11 14:31 乐乐章 阅读(189) 评论(0) 推荐(0)