How do I convert an array of integers to an array of strings based on the value of the integer?

Question

I have an array of integers that I'm randomizing using a method, and I want to convert that array of integers using

    int[] prizesUnshuffled = {0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5};
    RandomizeArray(prizesUnshuffled);
    String[] prizesString = (generateStringArray(prizesUnshuffled));

What I want is for instance, the unshuffled array to then be

    String[] prizesString = {PrizeA, PrizeA, PrizeA, PrizeB, PrizeB, PrizeB, PrizeC, PrizeC, PrizeC, PrizeD, PrizeD, PrizeD, PrizeE, PrizeE, PrizeE, PrizeF, PrizeF, PrizeF, PrizeF, PrizeF, PrizeF, PrizeF, PrizeF, PrizeF, PrizeF};

Sorry if I'm bad at explaining this, but I have no clue how to accomplish this, as I'm new to using arrays.

Answer 1

Java 8's Stream API can make this a trivial one-liner:

int[] arr = { 1, 2, 3, 4, 5 };
String[] arr_toString = Arrays.stream(arr).boxed().map(x -> "Prize" + x).toArray(String[]::new);

If you don't have access to the stream API, or would prefer something else, you can also do:

int[] arr = { 1, 2, 3, 4, 5 };
String[] arr_toString = new String[arr.length];

for (int i = 0; i < arr.length; ++i) {
    arr_toString[i] = "Prize" + arr[i];
}

Answer 2

public String[] generateStringArray(int[] prizesUnshuffled) {
    // Create string array of same size as we are going to return the same size
    String[] stringArr = new String[prizesUnshuffled.length];
    String prepend = "Prize";

    // Sort the prizesUnshuffled as it's been randomized by RandomizeArray
    Arrays.sort(prizesUnshuffled);

    // Iterate till there are items in prizesUnshuffled
    for (int i = 0; i < prizesUnshuffled.length; i++) {
        // Concat the string with prizedUnshuffled
        // Replace it in generate string array
        stringArr[i] = prepend + prizesUnshuffled[i];
    }
    return stringArr;
}