Ds\Deque::rotate

    (PECL ds >= 1.0.0)

    Ds\Deque::rotate — Rotates the deque by a given number of rotations

    Description

    publicDs\Deque::rotate(int$rotations): void

    Rotates the deque by a given number of rotations, which is equivalent to successively calling $deque->push($deque->shift()) if the number of rotations is positive, or $deque->unshift($deque->pop()) if negative.

    Parameters

    rotations

    The number of times the deque should be rotated.

    Return Values

    No value is returned.. The deque of the current instance will be rotated.

    Examples

    Example #1 Ds\Deque::rotate() example

    <?php
    $deque     = new \Ds\Deque(["a", "b", "c", "d"]);

    $deque->rotate(1); // "a" is shifted, then pushed.
    print_r($deque);

    $deque->rotate(2); // "b" and "c" are both shifted, the pushed.
    print_r($deque);
    ?>

    The above example will output something similar to:

    ( [0] => b [1] => c [2] => d [3] => a ) Ds\Deque Object ( [0] => d [1] => a [2] => b [3] => c )
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