Data Structures and Algorithms in Java
Data Structures and Algorithms in Java
6th Edition
ISBN: 9781119278023
Author: Michael T. Goodrich; Roberto Tamassia; Michael H. Goldwasser
Publisher: Wiley Global Education US
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Chapter 5, Problem 4R
Program Plan Intro

Recursion trace:

The recursion trace is drawn for each and every execution of recursive method.

The steps to recursion trace are given below:

  • Each and every entry for trace is corresponds to recursive call.
  • Each and every new recursive method call is represented as “down arrow” for new invocation of method.
  • When the method returns means, this can be represented by arrow which showing this return is drawn and the value of return may be represents beside of this arrow.

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8. Name and Email AddressesWrite a program that keeps names and email addresses in a dictionary as key-value pairs. The program should display a menu that lets the user look up a person’s email address, add a new name and email address, change an existing email address, and delete an existing name and email address. The program should pickle the dictionary and save it to a file when the user exits the program. Each time the program starts, it should retrieve the dictionary from the file and unpickle it.   How would the user be able to use the program?
Please solve and answer the question correctly please. Thank you!!
Please solve and answer the question correctly please. Thank you!!
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