Starting Out with C++: Early Objects
Starting Out with C++: Early Objects
8th Edition
ISBN: 9780133360929
Author: Tony Gaddis, Judy Walters, Godfrey Muganda
Publisher: Addison-Wesley
Question
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Chapter 9.2, Problem 9.3CP

The average number of comparison in binary search for the array with 20,000 elements is “15”.

Program Plan Intro

Binary search:

  • Binary search is a smart search process that searches for the particular element that is present in the array from the middle towards the left or right until the search element is found.
  • The search element is searched from the middle as the elements present in the array needs to present in the sorted order.
    • If the search element is larger it will search towards the right of the array.
    • If the search element is smaller it will search towards the left of the array.
  • The search continues in a narrow way that it searches for the quarter of the array until there are no values left in the array to search or compare.
  • The search of the target element is made in the smart way it eliminates a portion of array based on the given element as the array is sorted.

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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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Starting Out with C++: Early Objects

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