Array value to string function

Question

So basically I need to make a hash table, I understand how to do it with a string array but I need to do so with a random array I make.

Basically here is my random number code that another user gave me

    int[] array = new int[8000];
    Random rng = new Random();
    for (int i = 0; i < 8000; i++) {
    array[i] = rng.nextInt(65536);  
    }

I need this to somehow turn into something like this in my professor's example code

String[] array = { "100", "510", "170", "214", "268", "398",
            "235", "802", "900", "723", "699", "1", "16", "999", "890",
            "725", "998", "978", "988", "990", "989", "984", "320", "321",
            "400", "415", "450", "50", "660", "624" };

Which i tried and did this:

 int[] array = new int[8000];
 Random rng = new Random();
 for (int i = 0; i < 8000; i++) {
     array[i] = rng.nextInt(65536);
     String strI = Integer.toString(i);
     String[] array = {i + "," };

}

I need to make it a string variable in order to pass it into my method I have created for hash table function that takes a String array and string array length — Luis
– Luis, Commented Nov 8, 2015 at 4:01

Elliott Frisch · Accepted Answer · 2015-11-08 04:00:41Z

1

You can make it a String[] and fill that (and I would prefer using the array.length, instead of hardcoding 8000 again). Something like,

String[] array = new String[8000];
Random rng = new Random();
for (int i = 0; i < array.length; i++) {
     array[i] = String.valueOf(rng.nextInt(65536));
}

answered Nov 8, 2015 at 4:00

Elliott Frisch

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Comments

Tesseract · Accepted Answer · 2015-11-08 04:23:46Z

0

The shortest way of writing this is to use a stream.

Random rng = new Random();
String[] array = rng.ints(8000, 0, 65536).mapToObj(Integer::toString).toArray(String[]::new);

However streams were only introduced in Java 8.

answered Nov 8, 2015 at 4:23

Tesseract

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