Data Structures and Algorithms in Java
6th Edition
ISBN: 9781118771334
Author: Michael T. Goodrich
Publisher: WILEY
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Chapter 3, Problem 22C
Write a method, shuffle(A), that rearranges the elements of array A so that every possible ordering is equally likely. You may rely on the nextInt(n) method of the java.util.Random class, which returns a random number between 0 and n − 1 inclusive.
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run the main() method of class Lab11D.
Pls do the SWAPIN LAB 11D and below is the tester
For example, A B C D E F should turn into D E F A B C.
You should assume that the array list has an even number of elements (not necessarily 6).
One solution is to keep removing the element at index 0 and adding it to the back.
Each step would look like this:
A B C D E F
B C D E F A
C D E F A B
D E F A B C
When you run the code, you will find that there is a lot of movement in the array list. Each call to remove(0) causes n - 1 elements to move, where n is the length of the array. If n is 100, then you move 99 elements 50 times, (almost 5000 move operations). That's an inefficient way of swapping the first and second halves. (Learn more about time complexity at the end of the lab).
Come up with a better way in which you swap the elements directly. Hint: How do you swap the two elements A and D?
A B C D E F
D B C A E F
D E C A B F
D E F A B C
Write pseudocode for this algorithm.
Add…
Implement a method named “randomArray” in the file named “BSTTest.java” that tests a specific sorting algorithm. This method will take one parameter:
size of a randomly generated array (int): e.g., 10
This method will:
Generate and return a random array of the length specified by the parameter
The value range of each element should be between 0 and 1000 (inclusive)
>>> randomArray(5).
>>> [1, 2, 3, 7, 10]
Implement a method named “test” in the file named “BSTTest.java”. This method should take advantage of the implemented randomArray and print out information as such:
Testing of BST starts.
Insert 3
Insert 2
Insert 5
Insert 100
Delete 3.
The traverse gives a BST as 3, 5, 100
Testing of BST ends.
Please note that the goal is not to manually code the printings of each line. Try your best to make this method as automatic as possible. There are no limits on what parameters this method shall accept or what it returns. However, please make sure to use the method to…
5. Write a static method largestColumnFirst() that receives as parameter a 2D array numAr,finds the column with the largest sum, and switches it with the first column. For example:6 7 9 4 8 9 7 6 4 83 2 7 4 1 → 7 2 3 4 19 4 5 8 3 5 4 9 8 3
Chapter 3 Solutions
Data Structures and Algorithms in Java
Ch. 3 - Prob. 1RCh. 3 - Write a Java method that repeatedly selects and...Ch. 3 - Prob. 3RCh. 3 - The TicTacToe class of Code Fragments 3.9 and 3.10...Ch. 3 - Prob. 5RCh. 3 - Prob. 6RCh. 3 - Prob. 7RCh. 3 - Prob. 8RCh. 3 - Prob. 9RCh. 3 - Prob. 10R
Ch. 3 - Prob. 11RCh. 3 - Prob. 12RCh. 3 - Prob. 13RCh. 3 - Prob. 14RCh. 3 - Prob. 15RCh. 3 - Prob. 16RCh. 3 - Prob. 17CCh. 3 - Prob. 18CCh. 3 - Prob. 19CCh. 3 - Give examples of values for a and b in the...Ch. 3 - Suppose you are given an array, A, containing 100...Ch. 3 - Write a method, shuffle(A), that rearranges the...Ch. 3 - Suppose you are designing a multiplayer game that...Ch. 3 - Write a Java method that takes two...Ch. 3 - Prob. 25CCh. 3 - Prob. 26CCh. 3 - Prob. 27CCh. 3 - Prob. 28CCh. 3 - Prob. 29CCh. 3 - Prob. 30CCh. 3 - Prob. 31CCh. 3 - Prob. 32CCh. 3 - Prob. 33CCh. 3 - Prob. 34CCh. 3 - Prob. 35CCh. 3 - Write a Java program for a matrix class that can...Ch. 3 - Write a class that maintains the top ten scores...Ch. 3 - Prob. 38PCh. 3 - Write a program that can perform the Caesar cipher...Ch. 3 - Prob. 40PCh. 3 - Prob. 41PCh. 3 - Prob. 42PCh. 3 - Prob. 43P
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