Question

Write a java program to input 10 numbers into an arrey and replace all prime numbers in it by 0 and print the notified array.​

Answer 1

$\star\:\:\:\sf\large\underline\blue{Question:-}$

• Write a java program to input 10 numbers in an array and replace all the prime numbers in it by 0 and print the modified array.

$\star\:\:\:\sf\large\underline\blue{Source\:Code:-}$

import java.util.*;

class Array

{

static boolean isPrime(int n)

{

int c=0;

for(int i=1;i<=n;i++)

{

if(n%i==0)

c++;

}

return (c==2);

}

public static void main(String s[])

{

Scanner sc = new Scanner(System.in);

System.out.println("Enter 10 elements in array. ");

int a[]=new int[10];

for(int i=0;i<10;i++)

{

System.out.print("["+i+"]=");

a[i]=sc.nextInt();

}

for(int i=0;i<10;i++)

{

if(isPrime(a[i]))

a[i]=0;

}

System.out.print("The new array is: ");

for(int i=0;i<10;i++)

System.out.print(a[i]+" ");

}

}

Answer 2

import java.util.Arrays;

import java.util.Scanner;

public class PrimeArray {

static boolean isPrime(int number) {

for (int i = 2; i < number; i++)

if (number % i = = 0)

return false;

return true;

}

public static void main(String[ ] args) {

int[ ] array = new int[10];

System.out.println("Enter 10 numbers - ");

for (int i = 0; i < 10; i++)

array[i] = new Scanner(System.in).nextInt( );

System.out.println("Array Before - " + Arrays.toString(array));

for (int i = 0; i < 10; i++)

if (isPrime(array[i]))

array[i] = 0;

System.out.println("Array After - " + Arrays.toString(array));

}

}