Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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I need help with this Java problem to output as it's explained in this image below:

import java.util.Scanner;
import java.util.ArrayList;
import java.util.Collections;
public class LabProgram {
    static public int recursions = 0;
    static public int comparisons = 0;
    private static ArrayList<Integer> readNums(Scanner scnr) {
        int size = scnr.nextInt();                
        ArrayList<Integer> nums = new ArrayList<Integer>();
        for (int i = 0; i < size; ++i) {      
            nums.add(scnr.nextInt());
      }
      return nums;
    }
    
    static public int binarySearch(int target, ArrayList<Integer>   integers, int lower, int upper) {
        recursions+=1;
        int index = (lower+upper)/2;
        comparisons+=1;

        if(target == integers.get(index)){
            return index;
        }

        if(lower == upper){
            comparisons+=1;

            if(target == integers.get(lower)){
                return lower;
            }
            else{
                return -1;
            }
        }
        else{
           comparisons+=1;
           if(integers.get(index) > target){
               return binarySearch(target,integers,lower,index-1);
           }
           else{
               return binarySearch(target,integers,index + 1,upper);
           }
        }
   }
    public static void main(String [] args) {
        Scanner scnr = new Scanner(System.in);
        ArrayList<Integer> integers = readNums(scnr);
        int target = scnr.nextInt();
        int index = binarySearch(target, integers, 0, integers.size()- 1);
        System.out.printf("index: %d, recursions: %d, comparisons: %d", index, recursions, comparisons);
        System.out.println();
   }
}

Input
Your output
Expected output
8
10 15 20 25 30 35 40 45
50
CO
index: -1, recursions: 4, comparisons: 6
index: 1, recursions: 4, comparisons:
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Transcribed Image Text:Input Your output Expected output 8 10 15 20 25 30 35 40 45 50 CO index: -1, recursions: 4, comparisons: 6 index: 1, recursions: 4, comparisons:
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