How to combine two arrays within a loop?

[Nick Hallloran]

I am having troubles combing both arrays to execute within the loop. I have confused myself way to long with this simple program. I am supposed to write a program that reads 10 numbers and displays the distinct numbers. Example layout of the output is:

Enter an integer: 1
Enter an integer: 3
Enter an integer: 2
Enter an integer: 1
Enter an integer: 5
Enter an integer: 4
Enter an integer: 5
Enter an integer: 2
Enter an integer: 4
Enter an integer: 5
The number of distinct values is 5
1 3 2 5 4

My code is:

    
import java.util.Scanner;


public class Exercise6_5 {

public static void main(String[] args) {
Scanner input = new Scanner(System.in);

int NUMELEMS = 10;

String output = "";
String output1 = "";
int[] numbers = new int[NUMELEMS];
int DistinctArray[] = new int[NUMELEMS];
int count = 0;



for (int i = 0; i < numbers.length; i++) {
System.out.print("Enter a number(Maximum of 10 numbers total): ");
// Conver String into integer
numbers[i] = input.nextInt();
}


for (int i = 0; i < numbers.length; i++) {

int temp = numbers[i];

// I would use a method call here
if (!isIn(temp, DistinctArray))
{
DistinctArray[i] = temp;
count++;
output += temp + " ";
output1 += temp + " ";
} 
else
{
output += temp + " ";
}

}

System.out.println("The number of distinct values is: " + count);
System.out.println("The array is: " + output);
System.out.println("The test distinct array is: " + output1);
}

public static boolean isIn(int num, int[] a)
{
for (int i = 0; i < a.length; i++) {
if (a[i] == num)
return true;
}

return false;
}
}

[Ireneusz Kordal]

Hi,

use Set to display distinct values. I guess you want to display them in the order they were entered - LinkedHashSet is ideal to do this.
Look at this example:

int[] numbers = new int[]{1,3,2,1,5,4,5,2,4,5};
Set <Integer> set = new LinkedHashSet<Integer>();
for( int i: numbers){
  set.add(i);
}
for( Integer i: set){
  System.out.println( i );
}

[Sridhar Santhanakrishnan]

Ireneusz Kordal wrote:Hi,

for( Integer i: set){
System.out.println( i );
}

Or just use

System.out.println(set.toString());