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From "haiyang li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LANG-1074) Add a method to ArrayUtils for removing all occurrences of a given element
Date Fri, 20 Mar 2015 16:36:38 GMT

    [ https://issues.apache.org/jira/browse/LANG-1074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14371581#comment-14371581
] 

haiyang li commented on LANG-1074:
----------------------------------

please try the new patch file: LANG-1074_20150320.patch created with cmd svm diff from Windows
console. I created the previous patch file by eclipse plugin subclipse.

> Add a method to ArrayUtils for removing all occurrences of a given element
> --------------------------------------------------------------------------
>
>                 Key: LANG-1074
>                 URL: https://issues.apache.org/jira/browse/LANG-1074
>             Project: Commons Lang
>          Issue Type: Improvement
>          Components: lang.*
>    Affects Versions: 3.3.2
>            Reporter: haiyang li
>            Priority: Minor
>             Fix For: Review Patch
>
>         Attachments: LANG-1074.patch.txt, LANG-1074_20150320.patch
>
>
> Could we add the method: removeElementAll to remove all the occurrences of the specified
element from the specified (boolean/char/byte/short/int/long/float/double/Object) array:
> {code:title=org.apache.commons.lang3.ArrayUtils.java|borderStyle=solid}
>     public static <T> T[] removeElementAll(final T[] array, final Object element)
{
>         int index = indexOf(array, element);
>         if (index == INDEX_NOT_FOUND) {
>             return clone(array);
>         }
>         int[] indices = new int[array.length - index];
>         int count = 0;
>         indices[count++] = index;
>         for (;;) {
>             index = indexOf(array, element, ++index);
>             if (index == INDEX_NOT_FOUND) {
>                 break;
>             } else {
>                 indices[count++] = index;
>             }
>         }
>         return (T[]) removeAll((Object) array, Arrays.copyOfRange(indices, 0, count));
>     }
> {code}
> or maybe better:
> {code:title=org.apache.commons.lang3.ArrayUtils.java|borderStyle=solid}
>    public static <T> T[] removeElement(final T[] a, final Object element, boolean
removeAll) {
>         int index = indexOf(a, element);
>         if (index == INDEX_NOT_FOUND) {
>             return clone(a);
>         } else if (!removeAll || index >= a.length - 1) {
>             return remove(a, index);
>         } else {
>             int[] indices = new int[a.length - index];
>             int count = 0;
>             indices[count++] = index++;
>             
>             for (int len = a.length; index < len; index++) {
>                 if ((a[index] == null) ? element == null : (element == null ? false :
a[index].equals(element))) {
>                     indices[count++] = index;
>                 }
>             }
>             return (T[]) removeAll((Object) a, Arrays.copyOfRange(indices, 0, count));
>         }
>     }
> {code}



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