Computer Applications

Define a class to perform binary search on a list of integers given below, to search for an element input by the user, if it is found display the element along with its position, otherwise display the message "Search element not found".

2, 5, 7, 10, 15, 20, 29, 30, 46, 50

Java

Java Arrays

ICSE 2022

18 Likes

Answer

import java.util.Scanner;

public class KboatBinarySearch
{
    public static void main(String args[]) {
        
        Scanner in = new Scanner(System.in);
        int arr[] = {2, 5, 7, 10, 15, 20, 29, 30, 46, 50};
        
        System.out.print("Enter number to search: ");
        int n = in.nextInt();
        
        int l = 0, h = arr.length - 1, index = -1;
        while (l <= h) {
            int m = (l + h) / 2;
            if (arr[m] < n)
                l = m + 1;
            else if (arr[m] > n)
                h = m - 1;
            else {
                index = m;
                break;
            }
                
        }
        
        if (index == -1) {
            System.out.println("Search element not found");
        }
        else {
            System.out.println(n + " found at position " + index);
        }
    }
}

Variable Description Table

Program Explanation

Output

Answered By

7 Likes


Related Questions