Update HW6 solution.
Update HW6 solution.


Former-commit-id: 426655273197ff77ad28a7a9cd02bf2c46fe2caa [formerly b20928e1ddf50721c4c62ccdbf7638f6e939dedf]
Former-commit-id: cb253cd15ad96598975e5df174cf2b193c15ed33
justinbois/bebi103_utils