55c4e3dd · some demos from class, should have checked in earlier

6a37ae25 · one-time pad demo from class on Monday

e819191d · add the expanded hashtable demo from Wednesday

fbf167e7 · hashtable demo for keeping track of our friends and their uniformly...

c114b29d · files demo from Monday

1ac35fea · fib demo with recursion & memoization

d635bfca · linkedlist and stack demos from class

246df16a · demo of building BFS

81e1278e · progress towards bfs in class on Friday

652195e0 · add tree demo from Monday