9. Which of the following regular expressions can be used to get the domain names (e.g. google.com, www.baidu.com)from the following sentence?· https://google.com and I never refer http://www.baidu.com if I have to search anything'(?<=https:\/)([.]*)(?<=https:/V)([A-Za-z0-9]*)(?<=[https]:\/\/)([A-Za-z0-9.]*)(?<=https:V/V)([A-Za-z0-9.]*)CorrectBracketing the [https] means we are looking for any and as many of those letters. Since the second web linkbegins with 'http' not 'https', 'https' should be surrounded by square brackets. Also, in 'A-Za-z0-9.', the '.' isrequired.

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9. Which of the following regular expressions can be used to get the domain names (e.g. google.com, www.baidu.com) from the following sentence? 1 · https://google.com and I never refer http://www.baidu.com if I have to search anything' (?<=https:\/)([.]*) (?<=https:\//)([A-Za-z0-9]*) O (?<=[https]:\/\)([[A-Za-z0-9.]*) (?<=https://)([A-Za-zO-9.]*)

9. Which of the following regular expressions can be used to get the domain names (e.g. google.com, www.baidu.com) from the following sentence? 1 · https://google.com and I never refer http://www.baidu.com if I have to search anything' (?<=https:\/)([.]) (?<=https:\//)([A-Za-z0-9]) O (?<=[https]:\/\)([[A-Za-z0-9.]) (?<=https://)([A-Za-zO-9.])

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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