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Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
4th Edition
ISBN: 9780134787961
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 2MC
This is the part of a problem that can be solved without recursion.
- a. base case
- b. solvable case
- c. known case
- d. iterative case
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The word ladder game was invented by Lewis Carroll in 1877. The idea is to begin with a start word and then change one letter at a time until you arrive at an end word. Each word along the way must be an English word. For example, starting from FISH, you can arrive at MAST through the following word ladder:FISH, WISH, WASH, MASH, MAST Write a program that uses recursion to find the word ladder given a start word and an end word, or that determines no word ladder exists. Use the file words.txt that is available online with the source code for the book as your dictionary of valid words. This file contains 87,314 words. Your program does not need to find the shortest word ladder between words; any word ladder will do if one exists.
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Which of the following is/are true regarding the characteristics of recursion?
a.Every recursive call reduces the original problem, bringing it increasingly closer to a base case until it becomes that case.
b.Recursive method requires less memory than an iterative method.
c. It is possible to convert every recursive method to an iterative method.
d.The method is implemented using an if-else or a switch statement that leads to different cases.
e.One or more base cases are used to stop recursion.
The part of a problem that is solved with recursion is the case.a. baseb. iterativec. unknownd. recursive
Chapter 15 Solutions
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Ch. 15.2 - It is said that a recursive algorithm has more...Ch. 15.2 - Prob. 15.2CPCh. 15.2 - What is a recursive case?Ch. 15.2 - What causes a recursive algorithm to stop calling...Ch. 15.2 - What is direct recursion? What is indirect...Ch. 15 - Prob. 1MCCh. 15 - This is the part of a problem that can be solved...Ch. 15 - This is the part of a problem that is solved with...Ch. 15 - This is when a method explicitly calls itself. a....Ch. 15 - Prob. 5MC
Ch. 15 - Prob. 6MCCh. 15 - True or False: An iterative algorithm will usually...Ch. 15 - True or False: Some problems can be solved through...Ch. 15 - True or False: It is not necessary to have a base...Ch. 15 - True or False: In the base case, a recursive...Ch. 15 - Find the error in the following program: public...Ch. 15 - Prob. 1AWCh. 15 - Prob. 2AWCh. 15 - What will the following program display? public...Ch. 15 - Prob. 4AWCh. 15 - What will the following program display? public...Ch. 15 - Convert the following iterative method to one that...Ch. 15 - Write an iterative version (using a loop instead...Ch. 15 - What is the difference between an iterative...Ch. 15 - What is a recursive algorithms base case? What is...Ch. 15 - What is the base case of each of the recursive...Ch. 15 - What type of recursive method do you think would...Ch. 15 - Which repetition approach is less efficient: a...Ch. 15 - When recursion is used to solve a problem, why...Ch. 15 - How is a problem usually reduced with a recursive...Ch. 15 - Prob. 1PCCh. 15 - isMember Method Write a recursive boolean method...Ch. 15 - String Reverser Write a recursive method that...Ch. 15 - maxElement Method Write a method named maxElement,...Ch. 15 - Palindrome Detector A palindrome is any word,...Ch. 15 - Character Counter Write a method that uses...Ch. 15 - Recursive Power Method Write a method that uses...Ch. 15 - Sum of Numbers Write a method that accepts an...Ch. 15 - Ackermarms Function Ackermanns function is a...Ch. 15 - Recursive Population Class In Programming...
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