String s contains lowercase letters, digits, ( and ), satisfying the following rules: - Two digits...
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String s contains lowercase letters, digits, "(" and ")", satisfying the following rules: - Two digits cannot be adjacent. - Two "(" cannot be adjacent. - One "(" and one ")" cannot be adjacent. - After any digit, there must be "(". - The quantities of "(" and ")" are equal. Change string s until new string t created, t contains only lowercase letters. These are changing rules: - Sub-strings with form "n(p)", can change to "pp...p" (n times p), where n is a digit and p is a string. - If p still contains "(", ")" or digits, continue to implement the above changing method. Request: Implement function expand (string s); Where s is a string with the above form; return the result is a string containing only lowercase letters. Example: - String "2(ab3(cde)x)" changes into "abcdecdecdexabcdecdecdex". - String "2(x0 )3(z)" changes into "xxzzz". Note: In this exercise, libraries iostream, string and using namespace std; have been used. You can add other functions for your answer, but you are not allowed to add other libraries. For example: Result Test cout << expand("2(ab3(cde)x)") << "\n"; abcdecdecdexabcdecdecdex cout << expand("2(x0(y))³(z)") << "\n"; xxzzz String s contains lowercase letters, digits, "(" and ")", satisfying the following rules: - Two digits cannot be adjacent. - Two "(" cannot be adjacent. - One "(" and one ")" cannot be adjacent. - After any digit, there must be "(". - The quantities of "(" and ")" are equal. Change string s until new string t created, t contains only lowercase letters. These are changing rules: - Sub-strings with form "n(p)", can change to "pp...p" (n times p), where n is a digit and p is a string. - If p still contains "(", ")" or digits, continue to implement the above changing method. Request: Implement function expand (string s); Where s is a string with the above form; return the result is a string containing only lowercase letters. Example: - String "2(ab3(cde)x)" changes into "abcdecdecdexabcdecdecdex". - String "2(x0 )3(z)" changes into "xxzzz". Note: In this exercise, libraries iostream, string and using namespace std; have been used. You can add other functions for your answer, but you are not allowed to add other libraries. For example: Result Test cout << expand("2(ab3(cde)x)") << "\n"; abcdecdecdexabcdecdecdex cout << expand("2(x0(y))³(z)") << "\n"; xxzzz
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To implement the expand function you can use a stack to keep track of the characters and their count... View the full answer
Related Book For
Artificial Intelligence A Modern Approach
ISBN: 9780134610993
4th Edition
Authors: Stuart Russell, Peter Norvig
Posted Date:
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