Validate US Telephone Numbers FreeCodeCamp】的更多相关文章

function telephoneCheck(str) { // 祝你好运 //var re = /^1? ?(\(\d{3}\)|\d{3})[ |-]?\d{3}[ |-]?\d{4}$/; //var flag = re.test(str); //return flag; return /^1? ?(\(\d{3}\)|\d{3})[ |-]?\d{3}[ |-]?\d{4}$/.test(str); } 题目: 如果传入字符串是一个有效的美国电话号码,则返回 true. telepho…
Validate US Telephone Numbers Return true if the passed string is a valid US phone number. The user may fill out the form field any way they choose as long as it is a valid US number. The following are examples of valid formats for US numbers (refer…
function telephoneCheck(str) { // Good luck! //return true; var phone = /^1? ?(\d{3}|\(\d{3}\))[ -]?\d{3}[ -]?\d{4}$/; return phone.test(str); } telephoneCheck("555-555-5555");…
如果传入字符串是一个有效的美国电话号码,则返回 true. 思路:用正则,参考网上资料和js高级程序设计(5.4RegExp类型). let telephoneCheck = str => /^1? ?(\(\d{3}\)|\d{3})[ |-]?\d{3}[ |-]?\d{4}$/.test(str); telephoneCheck("555-555-5555"); 如果有不明白的地方请留言,如果有更好更简便更优化的方法请留言,谢谢. 更多内容请访问我的个人博客:Bblog…
题目 如果传入字符串是一个有效的美国电话号码,则返回 true. 用户可以在表单中填入一个任意有效美国电话号码. 下面是一些有效号码的例子(还有下面测试时用到的一些变体写法): 555-555-5555 (555)555-5555 (555) 555-5555 555 555 5555 5555555555 1 555 555 5555 在本节中你会看见如 800-692-7753 or 8oo-six427676;laskdjf这样的字符串. 你的任务就是验证前面给出的字符串是否是有效的美国电…
题意:博弈题面  给出一个数字序列 (>=11)  有两个人任意删除数字 直到 数字只剩下11位 如果删除后的数字串开头是8那么就是第一个赢 否则就是第二个人赢 第一个人先手  数字序列一定是奇数长度 思路: 首先计算一共走多少步 第二个人想赢只有以下两种方法 想法1:如果第二个人能把8都删掉 那么第二个人肯定赢 想法2: 如果删不掉 那么第二个人肯定从前到后尽可能得删掉8 这样使得第一个人的步数不足删除从前到后 步数+1那个8 的其他字符 否则就是第一人赢,直接模拟即可 (比赛的时候一直WA…
freecodecamp 高级算法地址戳这里. freecodecamp的初级和中级算法,基本给个思路就能完成,而高级算法稍微麻烦了一点,所以我会把自己的解答思路写清楚,如果有错误或者更好的解法,欢迎留言. Validate US Telephone Numbers 如果传入字符串是一个有效的美国电话号码,则返回 true. 简单来说,美国号码的规则就是,国家代码(必须为1),然后就是3,3,4的数字组合,前三个数字可以用括号包起来.另外就是间隔使用空格或者"-". 因为输入值肯定是字…
本文转载自 http://www.ietf.org/rfc/rfc3261.txt 中文翻译可参考 http://wenku.baidu.com/view/3e59517b1711cc7931b71654.html Network Working Group J. Rosenberg Request for Comments: 3261 dynamicsoft Obsoletes: 2543 H. Schulzrinne Category: Standards Track Columbia U.…
The present invention relates to the field of security of electronic data and/or communications. In one form, the invention relates to data security and/or privacy in a distributed and/or decentralised network environment. In another form, the invent…
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487-3279 Time Limit: 2000ms   Memory limit: 65536K  有疑问?点这里^_^ 题目描述 题目链接: sdut:   http://acm.sdut.edu.cn/sdutoj/problem.php?action=showproblem&problemid=1001 poj:    http://poj.org/problem?id=1002 Businesses like to have memorable telephone numbers.…
487-3279 Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 236746   Accepted: 41288 Description Businesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spell a memorable word or phras…
Topic Summary Topic: CORRECTIONS: Corrections Topic: DELIVER: Receiving Delivery Topic: DROPSHIP: Drop Shipment Topic: INSPECT: Receiving Inspection Topic: LOT_SERIAL: Lot/Serial Control Topic: ORACLE TIME AND LABOR: OTL Topic: PAY_ON_RCPT: Pay On Re…
A - 487-3279 Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 1002 Description Businesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spel…
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一. 题目 487-3279 Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 274040   Accepted: 48891 Description Businesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spell a memorable word or…
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Description Businesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spell a memorable word or phrase. For example, you can call the University of Waterloo by dialing the memorable TUT-GLOP. Some…
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题目是这样子的 Description Businesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spell a memorable word or phrase. For example, you can call the University of Waterloo by dialing the memorable TUT-GL…
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