new file:   .gitignore
	new file:   Hailstone Value.py
	modified:   LeetCode.py
	new file:   cc150/c3.py
	new file:   cc150/c4.py
	modified:   classes/BinaryHeap_class.py
	renamed:    classes/Binary Tree_class.py -> classes/BinaryTree_class.py
	new file:   classes/Graph_class.py