摘要: grep(global search regular expression(RE) and print out the line,全面搜索正则表达式并把行打印出来)是一种强大的文本搜索工具,它能使用正则表达式搜索文本,并把匹配的行打印出来。 -a 不要忽略二进制数据。 -A<显示列数> 除了显示符合 阅读全文
posted @ 2017-12-18 11:33 __Meng 阅读(5482) 评论(0) 推荐(0)
摘要: Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the dept 阅读全文
posted @ 2017-12-18 09:59 __Meng 阅读(133) 评论(0) 推荐(0)