class ArraySwap {
    private OperateData[] operateDataArray;
    private int start;
    public int length;

    public void swap(OperateData[] operateDataArray, int start, int length) {<FILL_FUNCTION_BODY>}

    public OperateData get(int i) {
        return this.operateDataArray[i + start];
    }
}

        this.operateDataArray = operateDataArray;
        this.start = start;
        this.length = length;
    
<no_super_class>