Needs help to complete this program. Thank you.Screen shots are attached. LAB7.16.1: LAB: Sorting user IDs0/10ACTIVITYUserIDSorting.javaLoad default template.Emport java.util.ArrayList;public class UserIDSorting {// TODO: Write the partitioning algorithm//////pick the middle element as thepivot, compare the values using two index variables l and h (low and high),initialized to the left and right sides of the current elements being sorted,and determine if a swap is necessarypublic static int partition (ArrayList userIDs, int i, int k) {}// TODO: Write the quicksort algorithm that recursively sorts the low and |//high partitionspublic static void quicksort (Arraylist userIDs, int i, int k) {public static void main (String[] args) {Scanner scnr = new Scanner (System.in);Arraylist userIDList = new ArrayList ();String userID;userID = 3cnr.next ();while (!userID.equals ("-1")) {userIDList.add (userID);userID = scnr.next () ;}// Initial call to quicksortquicksort (userIDList, 0, userIDList.size ()1);for (int i = 0; i < userIDList.size (); ++i) {System.out.println (userIDList.get (i));}} 7.16 LAB: Sorting user IDsGiven a main() that reads user IDs (until -1), complete the quicksort() and partition() methods to sort the IDs in ascending order using theQuicksort algorithm, and output the sorted IDs one per line.Ex. If the input is:kaylasimmsjuliamyron1994kaylajones-1the output is:juliakaylajoneskaylasimmsmyron1994318446.2220060.qx3zqy7LAB7.16.1: LAB: Sorting user IDs0/ 10АСTIVITY

first we will write quicksort funtion public static void quicksort(ArrayList < String >…

Answered: public static int partition (ArrayList…

Engineering

Computer Science

public static int partition (ArrayList userIDs, int i, int k) {

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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Question

Needs help to complete this program. Thank you.

Screen shots are attached.

LAB
7.16.1: LAB: Sorting user IDs
0/10
ACTIVITY
UserIDSorting.java
Load default template.
Emport java.util.ArrayList;
public class UserIDSorting {
// TODO: Write the partitioning algorithm
//
//
//
pick the middle element as the
pivot, compare the values using two index variables l and h (low and high),
initialized to the left and right sides of the current elements being sorted,
and determine if a swap is necessary
public static int partition (ArrayList<String> userIDs, int i, int k) {
}
// TODO: Write the quicksort algorithm that recursively sorts the low and |
//
high partitions
public static void quicksort (Arraylist<String> userIDs, int i, int k) {
public static void main (String[] args) {
Scanner scnr = new Scanner (System.in);
Arraylist<String> userIDList = new ArrayList<String> ();
String userID;
userID = 3cnr.next ();
while (!userID.equals ("-1")) {
userIDList.add (userID);
userID = scnr.next () ;
}
// Initial call to quicksort
quicksort (userIDList, 0, userIDList.size ()
1);
for (int i = 0; i < userIDList.size (); ++i) {
System.out.println (userIDList.get (i));
}
}

7.16 LAB: Sorting user IDs
Given a main() that reads user IDs (until -1), complete the quicksort() and partition() methods to sort the IDs in ascending order using the
Quicksort algorithm, and output the sorted IDs one per line.
Ex. If the input is:
kaylasimms
julia
myron1994
kaylajones
-1
the output is:
julia
kaylajones
kaylasimms
myron1994
318446.2220060.qx3zqy7
LAB
7.16.1: LAB: Sorting user IDs
0/ 10
АСTIVITY

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Step 1 write the function quick sort

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Step 2 Write partition function that return the index of current pivot

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Step 3 Defining swap function

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Step 4 Complete Code (for code screen shot and output Refer screenshot Step - 5)

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Step 5 Screenshot and output

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