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Posted to dev@commons.apache.org by "Henri Yandell (JIRA)" <ji...@apache.org> on 2007/02/14 21:44:06 UTC
[jira] Updated: (LANG-321) [patch] Add toArray() method to IntRange
and LongRange classes
[ https://issues.apache.org/jira/browse/LANG-321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Henri Yandell updated LANG-321:
-------------------------------
Fix Version/s: 3.0
Seems fine to me. Adding to the 3.0 roadmap - will wait a short while before applying in case anyone else has an opinion.
> [patch] Add toArray() method to IntRange and LongRange classes
> --------------------------------------------------------------
>
> Key: LANG-321
> URL: https://issues.apache.org/jira/browse/LANG-321
> Project: Commons Lang
> Issue Type: New Feature
> Reporter: Brian Egge
> Priority: Trivial
> Fix For: 3.0
>
>
> I've found it useful to use the range class to create an int[] or long[] array of a sequence on numbers.
> Index: src/test/org/apache/commons/lang/math/IntRangeTest.java
> ===================================================================
> --- src/test/org/apache/commons/lang/math/IntRangeTest.java (revision 506779)
> +++ src/test/org/apache/commons/lang/math/IntRangeTest.java (working copy)
> @@ -21,6 +21,8 @@
> import junit.framework.Test;
> import junit.framework.TestSuite;
>
> +import java.util.Arrays;
> +
> /**
> * Test cases for the {@link IntRange} class.
> *
> @@ -160,6 +162,13 @@
> assertEquals(false, big.containsInteger(Integer.MAX_VALUE - 3));
> }
>
> + public void testToArray() {
> + int[] threeItems = new IntRange(3, 5).toArray();
> + assertTrue(Arrays.equals(new int[]{3, 4, 5}, threeItems));
> + int[] oneItem = new IntRange(4).toArray();
> + assertTrue(Arrays.equals(new int[]{4}, oneItem));
> + }
> +
> //--------------------------------------------------------------------------
>
> }
> Index: src/test/org/apache/commons/lang/math/LongRangeTest.java
> ===================================================================
> --- src/test/org/apache/commons/lang/math/LongRangeTest.java (revision 506779)
> +++ src/test/org/apache/commons/lang/math/LongRangeTest.java (working copy)
> @@ -21,6 +21,8 @@
> import junit.framework.Test;
> import junit.framework.TestSuite;
>
> +import java.util.Arrays;
> +
> /**
> * Test cases for the {@link LongRange} class.
> *
> @@ -148,6 +150,12 @@
> assertEquals(false, big.containsLong(Long.MAX_VALUE - 3));
> }
>
> + public void testToArray() {
> + long[] threeItems = new LongRange(3, 5).toArray();
> + assertTrue(Arrays.equals(new long[]{3, 4, 5}, threeItems));
> + long[] oneItem = new LongRange(4).toArray();
> + assertTrue(Arrays.equals(new long[]{4}, oneItem));
> + }
> //--------------------------------------------------------------------------
>
> }
> Index: src/java/org/apache/commons/lang/math/IntRange.java
> ===================================================================
> --- src/java/org/apache/commons/lang/math/IntRange.java (revision 506779)
> +++ src/java/org/apache/commons/lang/math/IntRange.java (working copy)
> @@ -381,4 +381,16 @@
> return toString;
> }
>
> + /**
> + * <p>A built in array containing all the integer values in the range.</p>
> + *
> + * @return the <code>int[]</code> representation of this range
> + */
> + public int[] toArray() {
> + int[] array = new int[max - min + 1];
> + for(int i = 0; i < array.length; i++) {
> + array[i] = min + i;
> + }
> + return array;
> + }
> }
> Index: src/java/org/apache/commons/lang/math/LongRange.java
> ===================================================================
> --- src/java/org/apache/commons/lang/math/LongRange.java (revision 506779)
> +++ src/java/org/apache/commons/lang/math/LongRange.java (working copy)
> @@ -394,4 +394,16 @@
> return toString;
> }
>
> + /**
> + * <p>A built in array containing all the integer values in the range.</p>
> + *
> + * @return the <code>long[]</code> representation of this range
> + */
> + public long[] toArray() {
> + long[] array = new long[(int)(max - min + 1L)];
> + for(int i = 0; i < array.length; i++) {
> + array[i] = min + i;
> + }
> + return array;
> + }
> }
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