PHP - Vector Functions

Quiz

The Vector is a sequence of values in a contiguous buffer that grows and shrinks automatically. It is the most efficient sequential structure because the value index is directly mapped to its index in a buffer, and the growth factor is not bound to a specific multiple or exponent.

Strengths

Supports array syntax (square brackets).
Uses less overall memory than an array for the same number of values.
Automatically frees allocated memory when its size drops low enough.
Capacity does not have to be a power of 2.
get(), set(), push(), pop() are all O(1).

Weaknesses

shift(), unshift(), insert() and remove() are all O(n).

List of Functions

Below of the list of functions provided by the the Vector class −

Sr.No	Function & Description
1	Ds\Vector::allocate() This Function can allocate enough memory for the required capacity.
2	Ds\Vector::apply() This Function can update all values by applying a callback function to each value.
3	Ds\Vector::capacity() This Function can return the current capacity.
4	Ds\Vector::clear() This Function can remove all values.
5	Ds\Vector::__construct() This Function can create a new instance.
6	Ds\Vector::contains() This Function can can determine if a vector contain given values.
7	Ds\Vector::copy() This Function can return a shallow copy of vector.
8	Ds\Vector::count() This Function can be used to count the number of elements in a vector.
9	Ds\Vector::find() This Function can create a new vector using callable to determine which values to include.
10	Ds\Vector::first() This Function can return the first value in a vector.
11	Ds\Vector::get() This Function can return a value at given index.
12	Ds\Vector::insert() This Function can insert the values at a given index.
13	Ds\Vector::isEmpty() This Function can return whether the vector is empty.
14	Ds\Vector::join() This Function can join all values together as a string.
15	Ds\Set::jsonSerialize() This Function can return a representation that can be converted to JSON.
16	Ds\Vector::last() This Function can return a last value
17	Ds\Vector::map() This Function can return the result of applying a callback to each value.
18	Ds\Sequence::merge() This Function can return the result of adding all given values to a sequence.
19	Ds\Sequence::pop() This Function can remove and return the last value.
20	Ds\Vector::push() This Function can add values to end of a vector.
21	Ds\Vector::reduce() This Function can reduce the vector to a single value using callback function.
22	Ds\Vector::remove() This Function can remove and return a value by index.
23	Ds\Vector::reverse() This Function can reverse the vector in-place.
24	Ds\Vector::reversed() This Function can return a reversed copy.
25	Ds\Vector::rotate() This Function can can rotate the verctor by a given number of rotations.
26	Ds\Vector::set() This Function can update the value at a given index.
27	Ds\Vector::shift() This Function can remove and return the first value
28	Ds\Vector::slice This Function can return a sub-vector of the given range.
29	Ds\Vector::sort() This Function can sort the vector in-place.
30	Ds\Vector::sorted() This Function can return a sorted copy.
31	Ds\Vector::sum() This Function can return the sum of all values in a vector.
32	Ds\Vector::toArray This Function can convert the vector to an array.
33	Ds\Vector::unshift This Function can add values to the front of a vector.

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