You are given a string ternary_expr which represents a random nested ternary expression, you need to evaluate this expression, and report the result. Assumption can be as follows: ● ternary_expr only contains digits, ‘?’, ‘:’, ’T’, ‘F’ where ’T’ is true and ‘F’ is false. ● ternary_expr contains only one-digit numbers (i.e. in the range [0, 9]) The ternary expressions group right-to-left, and the result of the expression will always evaluate to either a digit, 'T' or 'F'. Requirements 1. Way of modeling the problem with the cost implications without using Stacks

You are given a string ternary_expr which represents a random nested ternary expression, you need to evaluate this expression, and report the result. Assumption can be as follows: ● ternary_expr only contains digits, ‘?’, ‘:’, ’T’, ‘F’ where ’T’ is true and ‘F’ is false. ● ternary_expr contains only one-digit numbers (i.e. in the range [0, 9]) The ternary expressions group right-to-left, and the result of the expression will always evaluate to either a digit, 'T' or 'F'. Requirements 1. Way of modeling the problem with the cost implications without using Stacks

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter7: Characters, Strings, And The Stringbuilder

Section: Chapter Questions

Problem 10RQ

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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.
You and Fredrick are good friends. Yesterday, Fredrick received credit cards from ABCD Bank. He wants to verify whether his credit card numbers are valid or not. You happen to be great at regex so he is asking for your help! A valid credit card from ABCD Bank has the following characteristics:► It must start with a , or .► It must contain exactly digits.► It must only consist of digits (-).► It may have digits in groups of , separated by one hyphen "-".► It must NOT use any other separator like ' ' , '_', etc.► It must NOT have or more consecutive repeated digits. Examples: Valid Credit Card Numbers 4253625879615786 4424424424442444 5122-2368-7954-3214 Invalid Credit Card Numbers 42536258796157867 #17 digits in card number → Invalid 4424444424442444 #Consecutive digits are repeating 4 or more times → Invalid 5122-2368-7954 - 3214 #Separators other than '-' are used → Invalid 44244x4424442444 #Contains non digit characters → Invalid 0525362587961578 #Doesn't start with 4, 5 or 6 →…
You and Fredrick are good friends. Yesterday, Fredrick received credit cards from ABCD Bank. He wants to verify whether his credit card numbers are valid or not. You happen to be great at regex so he is asking for your help! A valid credit card from ABCD Bank has the following characteristics:► It must start with a , or .► It must contain exactly digits.► It must only consist of digits (-).► It may have digits in groups of , separated by one hyphen "-".► It must NOT use any other separator like ' ' , '_', etc.► It must NOT have or more consecutive repeated digits. Examples: Valid Credit Card Numbers 4253625879615786 4424424424442444 5122-2368-7954-3214 Invalid Credit Card Numbers 42536258796157867 #17 digits in card number → Invalid 4424444424442444 #Consecutive digits are repeating 4 or more times → Invalid 5122-2368-7954 - 3214 #Separators other than '-' are used → Invalid 44244x4424442444 #Contains non digit characters → Invalid 0525362587961578 #Doesn't start with 4, 5 or 6 →…