The Ds\Deque::insert() function is an inbuilt function in PHP which is used to insert the value at the given index in the Deque.
public Ds\Deque::insert( $index, $values ) : void
Parameters: This function accepts two parameter as mentioned above and described below:
- $index: This parameter holds the index at which element is to be inserted.
- $value: This parameter holds the value to be inserted into the given index in Deque.
Return Value: This function does not return any value.
Exception: This function throws OutOfRangeException if the Deque is empty.
Below programs illustrate the Ds\Deque::insert() function in PHP:
Elements in the Deque Ds\Deque Object (  => 1  => 2  => 3  => 4  => 5  => 6 ) Insert 10 at index 4 in the deque Ds\Deque Object (  => 1  => 2  => 3  => 4  => 10  => 5  => 6 )
Original Deque Ds\Deque Object (  => 1  => 2  => 3  => 4  => 5  => 6 ) Modified Deque Ds\Deque Object (  => 1  => 2  => 3  => 10  => 20  => 30  => 40  => 4  => 5  => 6 )
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