Filling an array using a method

Question

I'm stuck with a revision question from a lab. The question is: Write a static method to initialize an array of integers called numList. The size of the array should be passed as an int to the method and the array should be returned. Each odd index position should contain the value -1 and each even numbered position should contain the index value. Thus, such an array might contain {0,-1,2,-1,4,-1,6,-1}.

My code is currently :

public class initializeArray{
  public static void main (String [] args) {
       int [] numList = new int [6];
       alterArray(numList);
    }

public static void alterArray (int [] numList)
   {
    for( int i = 0; i<numList.length; i++)
     {
      if (i == 0)
     {
        numList[i] = i;
     } else{
        numList[i] = -1;
    }
   }
System.out.println( "The array is: " + numList);}
}

The return that I'm getting is : "The array is: [I@1ef856c" Thanks.

Updated to:

System.out.println(Arrays.toString(numList));

Error now occuring: "Cannot find symbol - variable Arrays"

Try using `System.out.println(Arrays.toString(numList));` – MadProgrammer Mar 20 '15 at 00:01 — MadProgrammer, Mar 20 '15 at 00:01

score 0 · Accepted Answer · answered Mar 20 '15 at 00:02

0

Try this:

System.out.println(Arrays.toString(numList));

answered Mar 20 '15 at 00:02

Dermot Blair

1,600
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It says that the variable Arrays cannot be found – Lauren Burke Mar 20 '15 at 00:06
You have to add this in your import: "import java.util.Arrays;" – Eric Lamas Mar 20 '15 at 00:16
Brilliant thanks that worked. Is there any way to make that class work with using imports? – Lauren Burke Mar 20 '15 at 00:25
Your revision question only asks you to store the values In the array so technically you don't even need to print it out as you've already seen what's in the array. – Eric Lamas Mar 20 '15 at 00:31
I didn't even realize that! well at least I know for future now Thanks! – Lauren Burke Mar 20 '15 at 00:35
no worries, also if you dont want use the Arrays.toString, you could just use a for loop to print the values. System.out.println( "The array is:"); for( int i = 0; i – Eric Lamas Mar 20 '15 at 00:44

Filling an array using a method

1 Answers1