When users visit a website, the actions they can take are like following.
"""
|---register_button (10) # it means 10 users clicked register_button
| |---register_email (5)
| | | | |---email_already_exists ( 2)
| | |---register_success (3)
| |---register_facebook (4)
| | |---register_success (3)
| |---dropoff (2) # dropoff means that the user clicked the register button but then dorpped off after
|---login_button (10)
| |---login_email (4)
| | |---login_success (4)
| |---login_facebook (4)
| | | |---login_success ( 3)
| | |---login_failure (1)
| |---dropoff (2)
"""
given a string ,build a tree like above
intput_string =
"""
100, 1000, A # user_id, time_stamp, action
200, 1003, A
300, 1009, B
100, 1026, B
100, 1030, C
200, 1109, B
200, 1503, A"""
build the following tree
"""
|---A (2)
| |---B (2)
| | |---C (1)
| | |--- A (1)
|---B (1)
"""
Does any one know how to solve this ?