Question

In JAVA, write a program that generates 10 random numbers between 0 and 9. Use count arrays for each number.

A sample output would be:

The 10 random numbers are: 5 7 1 9 0 0 1 2 3 4

0 occurs 2 times

1 occurs 2 times

2 occurs 1 time

3 occurs 1 time

4 occurs 1 time

5 occurs 1 time

6 occurs 0 times

7 occurs 1 time

8 occurs 0 times

9 occurs 1 time

Answer 1

import java.util.Scanner;
import java.util.Random;
public class CountNum {

public static void main(String[] args) {
Scanner input = new Scanner(System.in);
Random r = new Random();
int [] num = new int[100];
int [] count = new int[100];
int i,temp = 0;
int max=9,min=0;
//Initialize num[] array with user input
for(i=0; i <10; i++){
num[i] = r.nextInt((max - min) + 1) + min;
  
}
System.out.print("The 10 random numbers are: ");
for( i=0;i<10;i++)
{
System.out.print(num[i]+" ");
}
System.out.println();
for(i = 0; i < num.length; i++){
temp = num[i];
count[temp]++;
}//end of for looop

for(i=1; i < count.length; i++){

if(count[i] > 0 && count[i] == 1){
System.out.printf("%d occurs %d time\n",i, count[i]);
}
else if(count[i] >=2){
System.out.printf("%d occurs %d times\n",i, count[i]);
}

}//end of for loop

}//end of main
}//end of CountOccurrenceOfNumbers