Remove duplicate items in a linked-list

[martinmendozadev]

Make a program that deletes duplicate elements at one linked-list.
Example:

#	Input	Output
1	4 → 5 → 9 → 0 → 5 → 1 → 2	4 → 5 → 9 → 0 → 1 → 2
2	1 → 2 → 3 → 3→ 2 → 1	1 → 2 → 3