Create Array with Unique Value : Array « Date Type « Android

Create Array with Unique Value


import java.util.Random;

class Main {
  final public static int[] createArrayWithUniqueValues(final int min,
      final int max, final int count) {

    int numFulfilled = 0;
    int[] fulfilled = new int[count];
    Random r = new Random();
    while (numFulfilled < count) {
      int candidate = r.nextInt(max) + min;
      if (!contains(fulfilled, numFulfilled, candidate)) {
        fulfilled[numFulfilled] = candidate;

    return fulfilled;

  final public static int[] createAndFillArrayWithUniqueValues(final int min,
      final int max) {
    int count = max - min + 1;
    return createArrayWithUniqueValues(min, max, count);


  final public static boolean contains(final int[] a, final int candidate) {
    return contains(a, a.length, candidate);

  final private static boolean contains(final int[] a, final int numItems,
      final int candidate) {
    for (int i = 0; i < numItems; i++) {
      if (candidate == a[i])
        return true;
    return false;



Related examples in the same category

1.Load string array value from strings.xml
2.Returns a clone of the specified array.
3.Tests two arrays for equality.
4.Transforms a list of Float values into an array of float.
5.Split the string into an array of strings using one of the separator in 'sep'.
6.Int array to HashSet
7.Array Iterator
8.Convert an array of floats to 16.16 fixed-point
9.Convert an array of 16.16 fixed-point values to floating point
10.Reverse an array
11.Using android.util.SparseArray
12.Join an array of Strings together.
13.Compare Arrays
14.Does Array contain a certain item
15.Resize a Java array
16.Get Node value and save to ArrayList the photo file into a byte array
18.byte Array To Int
19.load 16 Bit PCM Raw Data File As Double Array
20.convert From Short Array To Double Array
21.convert From Double Array To Short Array
22.get Set From Array
23.Convert an array of floats to 16.16 fixed-point 2 To Byte Array 4
25.Convert a byte array to a boolean array. Bit 0 is represented with false, Bit 1 is represented with 1
26.Return a subarray of the byte array in parameter.