摘要: Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree is symmetric: 1 / \ ... 阅读全文
posted @ 2016-01-18 21:12 sdlwlxf 阅读(182) 评论(0) 推荐(0) 编辑
摘要: Related to questionExcel Sheet Column TitleGiven a column title as appear in an Excel sheet, return its corresponding column number.For example: A ... 阅读全文
posted @ 2016-01-18 20:20 sdlwlxf 阅读(147) 评论(0) 推荐(0) 编辑
摘要: Given an integern, return the number of trailing zeroes inn!.Note:Your solution should be in logarithmic time complexity.Credits:Special thanks to@tsf... 阅读全文
posted @ 2016-01-18 19:20 sdlwlxf 阅读(125) 评论(0) 推荐(0) 编辑