[primitives] I would like to contribute two methods to the array lists

[Michael Mirwaldt]

Hi.
I am using your library for one of my projects.

Given the ByteArrayList, the following two methods can be very handy:
public byte[] removeElementsFromTo(int fromIndex,int toIndex,boolean 
returnArray) {
    if (fromIndex <0 ||this._size < fromIndex) {
        throw new IndexOutOfBoundsException("From-index should be at least 0 and less than 
" +this._size +", found " + fromIndex);
    }
    if (toIndex <1 ||this._size <= toIndex) {
        throw new IndexOutOfBoundsException("To-index should be at least 1 and less than or 
equal to " +this._size +", found " + toIndex);
    }
    if (toIndex <= fromIndex) {
        throw new IndexOutOfBoundsException("From-index must lie before to-index." 
+"from-index=" + fromIndex +", to-index=" + toIndex);
    }

    int length = toIndex - fromIndex;
    byte[] removedBytes =null;
    
    this.incrModCount();
    if (0 < length) {
        if (returnArray) {
            removedBytes =new byte[length];
            System.arraycopy(this._data, fromIndex, removedBytes,0, length);
        }

        System.arraycopy(this._data, fromIndex + length,this._data, fromIndex, 
length);
        this._size -= length;
    }else {
        if (returnArray) {
            removedBytes =new byte[0];
        }
    }

    return removedBytes;
}

public void addElementsAt(int index,byte[] elements) {
    this.checkRangeIncludingEndpoint(index);
    this.incrModCount();
    this.ensureCapacity(this._size + elements.length);
    int numtomove =this._size - index - elements.length;
    System.arraycopy(this._data, index,this._data, index + elements.length, 
numtomove);
    System.arraycopy(elements,0,this._data, index, elements.length);
    this._size+=elements.length;
}

They avoid copying arrays for every single byte.

Maybe you want to add them.

Best regards,'
Michael MIrwaldt