01.Given a string s containing only three types of characters: '(', ')' and '*', return true if s is valid.The following rules define a valid string:Any left parenthesis '(' must have a corresponding right parenthesis ')'.Any right parenthesis ')' must have a corresponding left parenthesis '('.Left parenthesis '(' must go before the corresponding right parenthesis ')'.'*' could be treated as a single right parenthesis ')' or a single left parenthesis '(' or an empty string "". Example 1:Input: s = "()" Output: true.

Given a string containing only '(', ')', and '*', determine if the string is valid according to the…

Answered: containing only three types of…

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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01.

Given a string s containing only three types of characters: '(', ')' and '*', return true if s is valid.

The following rules define a valid string:

Any left parenthesis '(' must have a corresponding right parenthesis ')'.
Any right parenthesis ')' must have a corresponding left parenthesis '('.
Left parenthesis '(' must go before the corresponding right parenthesis ')'.
'*' could be treated as a single right parenthesis ')' or a single left parenthesis '(' or an empty string "".

Example 1:

Input: s = "()" Output: true.

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