Singly-linked list and reversibly-linked list
sorted linked list
stack and queue
Some refactoring
Add week_2 example for hand shaking
Add bubble sort in class work for week 2
Add delete method
Revert "Add delete method"

This reverts commit 0692857c42872093cb368e97689b42c8b7a3b3c1.
Begin scoring-array
Merge sort fun times
Bubble sort
Add delete method
Revert "Add delete method"

This reverts commit 0692857c42872093cb368e97689b42c8b7a3b3c1.
Move scoring_array to HW directory
Better convergence test
unoptimized merge sort, ratio = 8.60
Optimize, ratio = 4.5
Add delete method
Revert "Add delete method"

This reverts commit 0692857c42872093cb368e97689b42c8b7a3b3c1.
Week 3 in class tree traversal