Computer Applications
Write a Java program to store n numbers in an one dimensional array. Pass this array to a function number(int a[]). Display only those numbers whose sum of digit is prime.
Answer
import java.util.Scanner;
public class KboatSDAPrime
{
public void number(int a[]) {
System.out.println("Numbers whose sum of digit is prime:");
for (int i = 0; i < a.length; i++) {
int x = a[i];
int s = 0;
while (x != 0) {
int d = x % 10;
s += d;
x /= 10;
}
int c = 0;
for (int j = 1; j <= s; j++) {
if (s % j == 0) {
c++;
}
}
if (c == 2) {
System.out.println(a[i]);
}
}
}
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.print("Enter the number of elements: ");
int n = in.nextInt();
int arr[] = new int[n];
System.out.println("Enter array elements: ");
for (int i = 0; i < n; i++) {
arr[i] = in.nextInt();
}
KboatSDAPrime obj = new KboatSDAPrime();
obj.number(arr);
}
}Output
Related Questions
Name the below structure:

- One dimensional array
- Two Dimensional array with 4 rows and 5 columns
- Three dimensional array
- Two Dimensional array with 5 rows and 4 columns
Define a class to search for a value input by the user from the list of values given below. If it is found display the message "Search successful", otherwise display the message "Search element not found" using Binary search technique.
5.6, 11.5, 20.8, 35.4, 43.1, 52.4, 66.6, 78.9, 80.0, 95.5.
Define a class to accept values into an integer array of order 4 x 4 and check whether it is a DIAGONAL array or not. An array is DIAGONAL if the sum of the left diagonal elements equals the sum of the right diagonal elements. Print the appropriate message.
Example:
3 4 2 5
2 5 2 3
5 3 2 7
1 3 7 1Sum of the left diagonal element = 3 + 5 + 2 + 1 = 11
Sum of the right diagonal element = 5 + 2 + 3 + 1 = 11
Consider the following two-dimensional array and answer the questions given below:
int x[ ][ ] = {{4,3,2}, {7,8,2}, {8, 3,10}, {1, 2, 9}};(a) What is the order of the array?
(b) What is the value of x[0][0]+x[2][2]?