原题地址:http://oj.leetcode.com/problems/valid-number/ 题意:判断输入的字符串是否是合法的数. 解题思路:这题只能用确定有穷状态自动机(DFA)来写会比较优雅.本文参考了http://www.cnblogs.com/zuoyuan/p/3703075.html里面的内容,在此致谢! 先要知道到底哪些数是合理的. e之前呢. 123 .123 123.456 123. +123 +.123 e之后 123 +123 首先这个题有9种状态: 0初始无输入…

Valid Number Validate if a given string is numeric. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10" => true Note: It is intended for the problem statement to be am…

Validate if a given string is numeric. Have you met this question in a real interview? Yes Example "0" => true " 0.1 " => true "abc" => false "1 a" => false "2e10" => true LeetCode上的原题,请参见我之…

Valid Number Validate if a given string is numeric. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10" => true Note: It is intended for the problem statement to be am…

问题描述: 为了配置邮件服务器,更改了相关域名,改完后,重启bind9报错 Mar 17 14:39:39 DnsServer2 named[822]: dns_rdata_fromtext: /etc/bind/db.asertest.com:11: near 'mail.asertest.com.': not a valid number Mar 17 14:39:39 DnsServer2 named[822]: zone asertest.com/IN: loading from mas…

Validate if a given string is numeric. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10" => true Note: It is intended for the problem statement to be ambiguous. You…

Validate if a given string can be interpreted as a decimal number. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10" => true" -90e3   " => true" 1e…

Difficulty: Hard  More:[目录]LeetCode Java实现 Description Validate if a given string can be interpreted as a decimal number. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10&qu…

Valid NumberValidate if a given string is numeric. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10" => trueNote: It is intended for the problem statement to be ambi…

Valid Number  Validate if a given string is numeric. Some examples: "0" => true " 0.1 " => true "abc" => false "1 a" => false "2e10" => true Note: It is intended for the problem statement to…