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git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1391783 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sebastian Bazley 2012-09-29 11:28:57 +00:00
parent 86226bb499
commit f01111b634
1 changed files with 5 additions and 4 deletions
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9
src/main/java/org/apache/commons/lang3/ArrayUtils.java
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@ -5741,7 +5741,7 @@ public class ArrayUtils {
*/ */
private static Object removeAll(Object array, int... indices) { private static Object removeAll(Object array, int... indices) {
int length = getLength(array); int length = getLength(array);
int diff = 0; int diff = 0; // number of distinct indexes, i.e. number of entries that will be removed
if (isNotEmpty(indices)) { if (isNotEmpty(indices)) {
Arrays.sort(indices); Arrays.sort(indices);
@ -5762,14 +5762,15 @@ public class ArrayUtils {
} }
Object result = Array.newInstance(array.getClass().getComponentType(), length - diff); Object result = Array.newInstance(array.getClass().getComponentType(), length - diff);
if (diff < length) { if (diff < length) {
int end = length; int end = length; // index just after last copy
int dest = length - diff; int dest = length - diff; // number of entries so far not copied
for (int i = indices.length - 1; i >= 0; i--) { for (int i = indices.length - 1; i >= 0; i--) {
int index = indices[i]; int index = indices[i];
if (end - index > 1) { if (end - index > 1) { // same as (cp > 0)
int cp = end - index - 1; int cp = end - index - 1;
dest -= cp; dest -= cp;
System.arraycopy(array, index + 1, result, dest, cp); System.arraycopy(array, index + 1, result, dest, cp);
// Afer this copy, we still have room for dest items.
} }
end = index; end = index;
} }