Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
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Chapter 20.6, Problem 20.6.2CP
Explanation of Solution
Comparable interface:
Comparable interface offers the sequence of single sorting which offers the compareTo() method to sort the data.
- It helps the compare the data of same classes.
- The Comparable interface is present in java.lang package.
Class to implement the Comparable interface is given below:
//Class A is implements the Comparable interface
public class A implements Comparable<A>
{
//Method definition
public int compareTo(A o)
{
//Return the value
return variable;
}
}
Explanation:
In the above code,
- Define the class with name of “A” which is implements the Comparable interface.
- This interface contains the compareTo() method to return the value.
“Yes”, two instances of the “A” class comparable.
Reason:
- Comparable interface helps the compare the data of same classes.
- It offers the compareTo() method to sort the data.
Class to implement the Comparator interface is given below:
/*Class B is implements the Comparator interface with type "B1"...
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Chapter 20 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 20.2 - Prob. 20.2.1CPCh. 20.2 - Prob. 20.2.2CPCh. 20.2 - Prob. 20.2.3CPCh. 20.2 - Prob. 20.2.4CPCh. 20.2 - Prob. 20.2.5CPCh. 20.3 - Prob. 20.3.1CPCh. 20.3 - Prob. 20.3.2CPCh. 20.3 - Prob. 20.3.3CPCh. 20.3 - Prob. 20.3.4CPCh. 20.4 - Prob. 20.4.1CP
Ch. 20.4 - Prob. 20.4.2CPCh. 20.5 - Prob. 20.5.1CPCh. 20.5 - Suppose list1 is a list that contains the strings...Ch. 20.5 - Prob. 20.5.3CPCh. 20.5 - Prob. 20.5.4CPCh. 20.5 - Prob. 20.5.5CPCh. 20.6 - Prob. 20.6.1CPCh. 20.6 - Prob. 20.6.2CPCh. 20.6 - Write a lambda expression to create a comparator...Ch. 20.6 - Prob. 20.6.4CPCh. 20.6 - Write a statement that sorts an array of Point2D...Ch. 20.6 - Write a statement that sorts an ArrayList of...Ch. 20.6 - Write a statement that sorts a two-dimensional...Ch. 20.6 - Write a statement that sorts a two-dimensional...Ch. 20.7 - Are all the methods in the Collections class...Ch. 20.7 - Prob. 20.7.2CPCh. 20.7 - Show the output of the following code: import...Ch. 20.7 - Prob. 20.7.4CPCh. 20.7 - Prob. 20.7.5CPCh. 20.7 - Prob. 20.7.6CPCh. 20.8 - Prob. 20.8.1CPCh. 20.8 - Prob. 20.8.2CPCh. 20.8 - Prob. 20.8.3CPCh. 20.9 - How do you create an instance of Vector? How do...Ch. 20.9 - How do you create an instance of Stack? How do you...Ch. 20.9 - Prob. 20.9.3CPCh. 20.10 - Prob. 20.10.1CPCh. 20.10 - Prob. 20.10.2CPCh. 20.10 - Prob. 20.10.3CPCh. 20.11 - Can the EvaluateExpression program evaluate the...Ch. 20.11 - Prob. 20.11.2CPCh. 20.11 - If you enter an expression "4 + 5 5 5", the...Ch. 20 - (Display words in ascending alphabetical order)...Ch. 20 - (Store numbers in a linked list) Write a program...Ch. 20 - (Guessing the capitals) Rewrite Programming...Ch. 20 - (Sort points in a plane) Write a program that...Ch. 20 - (Combine colliding bouncing balls) The example in...Ch. 20 - (Game: lottery) Revise Programming Exercise 3.15...Ch. 20 - Prob. 20.9PECh. 20 - Prob. 20.10PECh. 20 - (Match grouping symbols) A Java program contains...Ch. 20 - Prob. 20.12PECh. 20 - Prob. 20.14PECh. 20 - Prob. 20.16PECh. 20 - (Directory size) Listing 18.10,...Ch. 20 - Prob. 20.20PECh. 20 - (Nonrecursive Tower of Hanoi) Implement the...Ch. 20 - Evaluate expression Modify Listing 20.12,...
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- Explain the use of generics in conjunction with the Comparable interface in Java. How does it enhance type safety when sorting collections?arrow_forwardIs it feasible to quickly access frequently used operators while dealing with enumeration types, such as the arithmetic operators and the stream operators? Is it possible to get a satisfying outcome by, say, overloading these operators? What are the benefits and drawbacks of this approach?arrow_forwardExplain the significance of the compareTo method in the Comparable interface. What role does it play in determining the natural order of objects?arrow_forward
- Measure the performance of addFirst, remove(Object), and removeLast for each of the three implementations (you may include Vectors, if you wish). Which implementations perform best for small lists? Which implementations perform best for large lists?arrow_forwardYou are required to demonstrate competency in any or all of 2D arrays, doubly linked lists, merging of sorted data structures and constructive and destructive programming techniques. Code your solution according to the requirements below. And add comments: Class Tester, method process: Modify the following(in particular method process in class Tester).arrow_forwardHow do I use the compareTo() method in java to sort objects of generic type ? I'm not allowed to use any imports. Any example would be much appreciated.arrow_forward
- How can you implement a stable sort for a collection of objects using the Comparable interface? What are the implications of stability in sorting algorithms?arrow_forwardConsider the Person class in Problem 1. Implement the interface PersonPriorityQueueInterface provided in the assignment. In your implementation, you must use an instance of AList (which you used in Problem 1) to store the list of persons. We consider that a person whose age is higher than a second person also has a higher priority. Thus, the method peek(), for example, should return the person who is the oldest in the list. Your implementation should be O(n) for add, and O(1) for the remaining methods. Consider the Person class in Problem 1. Implement the interface PersonPriorityQueueInterface provided in the assignment. In your implementation, you must use an instance of AList (which you used in Problem 1) to store the list of persons. We consider that a person whose age is higher than a second person also has a higher priority. Thus, the method peek(), for example, should return the person who is the oldest in the list. Your implementation should be O(n) for add, and O(1)…arrow_forwarddemonstrates the ComparatorDemo class, which populates a collection of Student instances before calling Arrays.Sort with each of our Comparator objects to see how the sort order differs.arrow_forward
- Wap shows the ComparatorDemo class, which populates an array of Student objects and then calls Arrays.sort with each of our Comparator objects to demonstrate the difference in the sort order.arrow_forwardDiscuss the limitations of the Comparable interface when it comes to sorting custom objects. When might you need to resort to using the Comparator interface instead?arrow_forwardBy overriding compare( ), alter the way that objects are ordered. For example, to sort in reverse order, you can create a comparator that reverses the outcome of a comparison. The equals( ) method, shown here, tests whether an object equals the invoking comparator:boolean equals(Object obj)Here, obj is the object to be tested for equality. The method returns true if obj and the invoking object are both Comparator objects and use the same ordering. Otherwise, it returns false. Write java code for implement given statement.arrow_forward
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