lec7 and 8 updated

lecture_material/02-repro2/img/clone.png

lecture_material/02-repro2/reading.md

lecture_material/04-performance2/reading.md

lecture_material/05-oop1/reading.ipynb

lecture_material/06-oop2/reading1.ipynb

lecture_material/06-oop2/reading2.ipynb

lecture_material/07-recursion-and-graphs/reading1.ipynb

lecture_material/07-recursion-and-graphs/reading2.ipynb

lecture_material/07-recursion-and-graphs/solution.ipynb

lecture_material/07-recursion-and-graphs/starter.ipynb

...e_material/07-recursion-and-graphs/template_lec_001.ipynb

...e_material/07-recursion-and-graphs/template_lec_002.ipynb

lecture_material/07-recursion-and-graphs/worksheet-4.pdf

lecture_material/08-trees/reading.ipynb

lecture_material/08-trees/solution.ipynb

lecture_material/08-trees/template_lec_001.ipynb

lecture_material/08-trees/template_lec_002.ipynb