add => add new value
sadd => sorted add new value
append => append to new value
print => print added values
github.com/mkilic91/goLinkedList
--------------------------------
-> add
#add -> 1
-> add
#add -> 2
-> add
#add -> 4
-> print
--------------------------------
1
2
4
--------------------------------
-> sadd
#sadd -> 3
-> add
#add -> 8
-> add
#add -> 5
-> print
--------------------------------
1
2
3
4
8
5
--------------------------------
-> append
#append after -> 8
#append new val -> 9
-> print
--------------------------------
1
2
3
4
8
9
5
--------------------------------
-> sadd
#sadd -> 5
-> sadd
#sadd -> 6
-> print
--------------------------------
1
2
3
4
5
6
8
9
5
--------------------------------
->