. For each iteration, how a number from a unsorted region is placed in the correction posion in the sorted region; 2. How to make the whole array be sorted based on the previous step, and count the total number of shifts during the whole insertion sort process. To complete the whole implementation, you should write at least the following important methods: Part1: insertLast /** A method to make an almost sorted array into fully sorted. @param arr: an array of integers, with all the numbers are sorted excepted the last one @param size: the number of elements in an array */ public static void insertLast(int[] arr, int size) { // your work }

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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You are asked to re-implement the insertion sort (InsertionSort.java), with additional requirements. Particularly:

1. For each iteration, how a number from a unsorted region is placed in the correction posion in the sorted region;

2. How to make the whole array be sorted based on the previous step, and count the total number of shifts during the whole insertion sort process.

To complete the whole implementation, you should write at least the following important methods:

Part1: insertLast

/**

A method to make an almost sorted array into fully sorted.

@param arr: an array of integers, with all the numbers are sorted excepted the last one

@param size: the number of elements in an array

*/

public static void insertLast(int[] arr, int size)

{

// your work

}

In this method, you are required to print the following information for each iteration until the termination of the loop:

•The intermediate array content and

•The comparing pair information

Part2: insertionSort

/**

A method to make an unsorted array into fully sorted.

@param arr: an array of integers

@param size: the number of elements in an array

*/

public static void insertionSort(int[] arr, int size)

{

// your work

}

This method is to make an unsorted array into sorted, The basic idea is to run n−1 iterations, and for each iteration, we perform the task as implemented in Part 1.

In this method, you are required to print the following information (1) The intermediate array content and (2) The numbers of shift for each iteration, and the total number of shifts. Important: Since the insertLast prints out intermediate results, you may NOT di-rectly use this method in insertionSort. You could copy the original source code from insertLastand disable the printing statements. or write another insertLastmethod without printing statements.

Addtional: printArray

public static void printArray(int [] arr, int size)

A variety of printArray methods with different parameters (designed on your own) maybe useful as you will print out array each iteration used in previous methods.

main()

To test your program, you may provide a menu list for user to choose, declare an array with the size (given from the keyboard) or fixed number, fill up the array values from the keyboard, invoke one of these two methods (insertLast and insertionSort),and print out the required formatted program outputs.

Additional Requirements

1. Your program should not terminate if user does not enter 3 (means terminating the program). (Hint: you may use do-while loop to control it in yourmain()).

2. For the testing of part1, make sure you enter an input array with almost sorted, i.e., all elements in the array are sorted except the last one.

3. For the testing of part 2, you should test your program with the inputs of (a) unsortedarray (average case), (b) sorted array in ascending order (best case), and (c) sorted array in descending order (worst case). Save screenshots for each case.

4. Your program should have good style (indentation, whitespace, comments, vertical alignment, ...).

Coding Language: Java

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