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do not copy array twice when inserting

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Andreas Huber
2017-11-10 10:42:47 +01:00
parent 88e0179dd5
commit ecf1a62c95
1 changed files with 5 additions and 6 deletions
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11
primitiveCollections/src/main/java/org/lucares/collections/IntList.java
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@@ -158,12 +158,11 @@ public final class IntList implements Serializable, Cloneable {
ensureCapacity(values.length);
// TODO do not copy the array twice
final int[] newData = new int[data.length];
System.arraycopy(data, 0, newData, 0, pos);
System.arraycopy(values, 0, newData, pos, values.length);
System.arraycopy(data, pos, newData, pos + values.length, index - pos);
data = newData;
// move everything after the insert position to make room for the new values
System.arraycopy(data, pos, data, pos + values.length, values.length);
// insert the new values
System.arraycopy(values, 0, data, pos, values.length);
index += values.length;
}