Question

Write a program to take n integer values in an array, also take an integer from the user as a search variable and check that the search value is present in the array or not using the binary search technique.



no Goo.gle answers and it should be in java language
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Answer 1

Answer:

import java.util.*;

public class Main

{

   static int search(int[] arr , int key){

       for(int i = 0; i < arr.length; i++){

           if(arr[i] == key){

               return i;

           }

       }

       return -1;

   }

public static void main(String[] args) {

 Scanner sc = new Scanner(System.in);

 System.out.println("Enter the Number of elements in the array-");

 int n = sc.nextInt();

 int[] arr = new int[n];

 System.out.println("Enter all " + n + " elements-");

     for(int i = 0; i < n; i++){

         arr[i] = sc.nextInt();

     }

     System.out.println("Your array is " + Arrays.toString(arr));

     System.out.print("Enter the element you want to find in the array:");

     int x = sc.nextInt();

     System.out.println(search(arr , x));

}

}

Explanation: