/**

* TODO

* function: filter_leq

*

* description: removes all elements of the given list (lst) which

* are less than or equal to a given value (cutoff)

*

* A list containing the removed elements is returned.

*

* examples:

*

* EX1: lst: [4, 9, 2, 4, 8, 12, 7, 3]

* cutoff: 4

*

* after call:

* lst: [9, 8, 12, 7]

* returned list: [4, 2, 4, 3]

*

* -----------------------------------------

* EX2: lst: [6, 5, 2, 1]

* cutoff: 6

*

* after call:

* lst: []

* returned list: [6, 5, 2, 1]

*

* REQUIREMENTS:

*

* RUNTIME: THETA(n) where n is the length of the given list

*

* ORDERING: the ordering of the returned list should be the same as

* in the given list

*

* MEMORY: for full credit, no new nodes should be allocated or deallocated;

* you should just "re-use" the existing nodes. HOWEVER, you will

* need to allocate a LIST structure itself (i.e., for the returned

* list).

*

*/

List * filter_leq(const T & cutoff) {

return nullptr;

}