Java Utililty Methods Array Range Copy

List of utility methods to do Array Range Copy

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Description

The list of methods to do Array Range Copy are organized into topic(s).

Method

byte[]copyOfRange(final byte[] original, final int from, final int to)
copy Of Range 
final int newLength = to - from;
if (newLength < 0) {
    throw new IllegalArgumentException(from + " > " + to);
final byte[] copy = new byte[newLength];
System.arraycopy(original, from, copy, 0, Math.min(original.length - from, newLength));
return copy;
double[]copyOfRange(final double[] data, final int start, final int end)
Behavior is identical to calling data.clone() or Arrays.copyOf(data) But can be up to 30% faster if the JIT doesn't optimize those functions 
if (end > data.length || start < 0)
    throw new IllegalArgumentException("Bad array bounds!");
final double ret[] = new double[end - start];
for (int i = 0; i < (end - start) / 3; i++) {
    final int x = i * 3;
    ret[x] = data[x + start];
    ret[x + 1] = data[x + 1 + start];
    ret[x + 2] = data[x + 2 + start];
...
int[]copyOfRange(int[] anArray, int from, int to)
Returns a copy of given range of given array (this method is in Java 6 Arrays class). 
int newLength = to - from;
if (newLength < 0)
    throw new IllegalArgumentException(from + " > " + to);
int[] copy = new int[newLength];
System.arraycopy(anArray, from, copy, 0, Math.min(anArray.length - from, newLength));
return copy;
int[]copyOfRange(int[] old, int from, int to)
Identical to Arrays.copyOfRange , but GWT compatible. 
int length = to - from;
int[] newArray = new int[length];
int minLength = Math.min(old.length - from, length);
System.arraycopy(old, from, newArray, 0, minLength);
return newArray;
int[]copyOfRange(int[] original, int from, int to)
Copied from class Arrays#copyOfRange(int[],int,int) , as this requires java 1.6, and our app should work with 1.5. 
int newLength = to - from;
if (newLength < 0)
    throw new IllegalArgumentException(from + " > " + to);
int[] copy = new int[newLength];
System.arraycopy(original, from, copy, 0, Math.min(original.length - from, newLength));
return copy;
String[]copyOfRange(String[] array, int initialIndex, int endIndex)
copy Of Range 
String[] tempArray = new String[endIndex - initialIndex];
for (int i = initialIndex; i < endIndex; i++)
    tempArray[i - initialIndex] = array[i];
return tempArray;
String[]copyOfRange(String[] original, int from, int newLength)
copy Of Range 
String[] copy = new String[newLength];
newLength = Math.min(original.length - from, newLength);
System.arraycopy(original, from, copy, 0, newLength);
return copy;