Locked
Pass the Dictionary check first
Everything after it builds on dictionaries. Each rep in the check has to be passed without opening the solution. Hints and Basics are fine.
Still to clear · 8 of 8
- Trace: keep the table
- Which line crashes?
- Write: menu from two lists
- Write: total a bill
- Debug: cheapest item
- Write: items under a budget
- Write: who sits where
- Write: apply price changes
Preview · where this ladder is heading
Reverse Linked List
Given the first node of a singly linked list, turn the list around so the last node comes first, and return the new first node. Rewire the existing nodes in place; do not create new ones.
in1 -> 2 -> 3 -> 4out4 -> 3 -> 2 -> 1
in7 -> 8out8 -> 7
inempty list (None)outNone
You can read it now. The editor opens when the check is cleared.