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
Define a class to accept values into 4x4 array and find and display the sum of each row.
Example:
A[][]={{1,2,3,4},{5,6,7,8},{1,3,5,7},{2,5,3,1}}
Output:
sum of row 1 = 10 (1+2+3+4) sum of row 2 = 26 (5+6+7+8) sum of row 3 = 16 (1+3+5+7) sum of row 4 = 11 (2+5+3+1)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.
The statement used to find the total number of Strings present in the string array String s[] is:
- s.length
- s.length()
- length(s)
- len(s)