
Big Java, Binder Ready Version: Early Objects
6th Edition
ISBN: 9781119056447
Author: Cay S. Horstmann
Publisher: WILEY
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Expert Solution & Answer
Chapter 13, Problem 1RE
Explanation of Solution
Recursion:
- Java-recursion is a
mechanism in which a method continuously calls itself. - In java, a method which calls itself is called recursive method.
- Using this mechanism, some problems can be solved easily.
- For example, problems like, Tower of Hanoi(TOH), Inorder/Preorder/Postorder Tree Travels, DFS of Graph are solved using recursion.
- Syntax of recursive methods,
//define recursive method
returntype methodname()
{
//code to be executed
//calling same method
methodname();
}
- In the above code, a method “methodname()” is a recursive method because, in the definition, this method calls by itself.
Iteration:
- Iteration is a mechanism to sequence through a block of code repeatedly until a condition meets.
- The iteration mechanism uses the loops to solve the problem. The loops can be either “for”, “while” and “do..while”.
- Common example of problems that uses iteration are, iterating through a list of grades to find the average of grade points, processing the text file and so on.
Infinite recursion:
- The infinite recursion occurs when the recursion never stops.
- In this case, a method calls itself over and over again and never reaches an end.
- Infinite recursion occurs when the recursive method fails to stop recursion. The infinite recursion shows bug’s in the program.
Recursive helper method:
- The recursive helper method is used to identify how far the recursion has already proceeded or how far it still has to proceed.
- A task may often be solved by handing it over to a recursive helper method.
- The recursive helper method can be defined by slightly changing the original recursive method.
- The recursive helper method is also recursive and usually called by a non-recursive method.
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Chapter 13 Solutions
Big Java, Binder Ready Version: Early Objects
Ch. 13.1 - Prob. 1SCCh. 13.1 - Prob. 2SCCh. 13.1 - Prob. 3SCCh. 13.1 - Prob. 4SCCh. 13.1 - Prob. 5SCCh. 13.2 - Prob. 6SCCh. 13.2 - Prob. 7SCCh. 13.2 - Prob. 8SCCh. 13.2 - Prob. 9SCCh. 13.3 - Prob. 10SC
Ch. 13.3 - Prob. 11SCCh. 13.3 - Prob. 12SCCh. 13.4 - Prob. 13SCCh. 13.4 - Prob. 14SCCh. 13.4 - Prob. 15SCCh. 13.5 - Prob. 16SCCh. 13.5 - Prob. 17SCCh. 13.5 - Prob. 18SCCh. 13.6 - Prob. 19SCCh. 13.6 - Prob. 20SCCh. 13.6 - Prob. 21SCCh. 13 - Prob. 1RECh. 13 - Prob. 2RECh. 13 - Prob. 3RECh. 13 - Prob. 4RECh. 13 - Prob. 5RECh. 13 - Prob. 6RECh. 13 - Prob. 7RECh. 13 - Prob. 8RECh. 13 - Prob. 9RECh. 13 - Prob. 10RECh. 13 - Prob. 11RECh. 13 - Prob. 12RECh. 13 - Prob. 13RECh. 13 - Prob. 1PECh. 13 - Prob. 2PECh. 13 - Prob. 3PECh. 13 - Prob. 4PECh. 13 - Prob. 5PECh. 13 - Prob. 6PECh. 13 - Prob. 7PECh. 13 - Prob. 8PECh. 13 - Prob. 9PECh. 13 - Prob. 10PECh. 13 - Prob. 11PECh. 13 - Prob. 12PECh. 13 - Prob. 13PECh. 13 - Prob. 14PECh. 13 - Prob. 15PECh. 13 - Prob. 16PECh. 13 - Prob. 17PECh. 13 - Prob. 18PECh. 13 - Prob. 19PECh. 13 - Prob. 20PECh. 13 - Prob. 21PECh. 13 - Prob. 22PECh. 13 - Prob. 23PECh. 13 - Prob. 24PECh. 13 - Prob. 25PECh. 13 - Prob. 26PECh. 13 - Prob. 27PECh. 13 - Prob. 1PPCh. 13 - Prob. 2PPCh. 13 - Prob. 3PPCh. 13 - Prob. 4PPCh. 13 - Prob. 5PPCh. 13 - Prob. 6PPCh. 13 - Prob. 7PPCh. 13 - Prob. 8PPCh. 13 - Prob. 9PPCh. 13 - Prob. 10PPCh. 13 - Prob. 11PPCh. 13 - Prob. 12PPCh. 13 - Prob. 13PP
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