Ds\Sequence::reverse() function can reverse a sequence in-place.
public abstract void Ds\Sequence::reverse( void )
Ds\Sequence::reverse() function doesn't have any parameters. This function doesn't return any value.
<?php $seq = new \Ds\Vector([1, 2, 3, 4, 5]); echo("Sequence before reversing \n"); print_r($seq); echo("Sequence after reversing \n"); seq->reverse(); print_r($seq); ?>
<?php $seq = new \Ds\Vector(["Raja", "Adithya", "Jai", "Chaitanya", "Surya", "Ravi"]); echo("Sequence before reversing \n"); print_r($seq); echo("Sequence after reversing \n"); $seq->reverse(); print_r($seq); ?>