Given an alphabet with opening and closing parentheses {), (} only, create a regex that validates all strings containing the sub-string (((). 2. Build a regular expression that captures the 10-digit US phone numbers (10 digits excluding the coun- try code), where # means any number from 0 to 9. It is recommended to use # instead of [0-9] for simplicity
Given an alphabet with opening and closing parentheses {), (} only, create a regex that validates all strings containing the sub-string (((). 2. Build a regular expression that captures the 10-digit US phone numbers (10 digits excluding the coun- try code), where # means any number from 0 to 9. It is recommended to use # instead of [0-9] for simplicity
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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1. Given an alphabet with opening and closing parentheses {), (} only, create a regex that validates all
strings containing the sub-string ((().
2. Build a regular expression that captures the 10-digit US phone numbers (10 digits excluding the coun-
try code), where # means any number from 0 to 9.
It is recommended to use # instead of [0-9] for simplicity
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