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

ICSE Computer Applications Class 10 – Previous Year Question Papers & Solutions (Article) (Program)

Given Input:

Expected Output:

Program:

import java.util.Scanner;

public class RansariBinarySearch
{
    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);
        }
    }
}

Output:

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Define a class to accept two strings of same length and form a new word in such a way that, the first character of the first word is followed by the first character of the second word and so on.
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Programs:

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

Given Input:

Expected Output:

Program:

Output:

1247. Define a class to declare an array of size twenty of double datatype, accept the elements into the array and perform the following : Calculate and print the product of all the elements.Print the square of each element of the array.

1248. Define a class to accept a string, and print the characters with the uppercase and lowercase reversed, but all the other characters should remain the same as before. EXAMPLE:INPUT : WelCoMe_2022OUTPUT : wELcOmE_2022

1249. Define a class to declare an array to accept and store ten words. Display only those words which begin with the letter 'A' or 'a' and also end with the letter 'A' or 'a'.EXAMPLE :Input : Hari, Anita, Akash, Amrita, Alina, Devi Rishab, John, Farha, AMITHAOutput: AnitaAmritaAlinaAMITHA

1250. Define a class to accept two strings of same length and form a new word in such a way that, the first character of the first word is followed by the first character of the second word and so on.Example :Input string 1 – BALLInput string 2 – WORD OUTPUT : BWAOLRLD

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

1247.
Define a class to declare an array of size twenty of double datatype, accept the elements into the array and perform the following :

Calculate and print the product of all the elements.
Print the square of each element of the array.

1248.
Define a class to accept a string, and print the characters with the uppercase and lowercase reversed, but all the other characters should remain the same as before.

EXAMPLE:
INPUT : WelCoMe_2022
OUTPUT : wELcOmE_2022

1249.
Define a class to declare an array to accept and store ten words. Display only those words which begin with the letter 'A' or 'a' and also end with the letter 'A' or 'a'.
EXAMPLE :
Input : Hari, Anita, Akash, Amrita, Alina, Devi Rishab, John, Farha, AMITHA
Output: Anita
Amrita
Alina
AMITHA

1250.
Define a class to accept two strings of same length and form a new word in such a way that, the first character of the first word is followed by the first character of the second word and so on.
Example :
Input string 1 – BALL
Input string 2 – WORD

OUTPUT : BWAOLRLD