serialize and deserialize Problems

Patterns

3 problems

#	Title	Acceptance	Difficulty
1	Subtree of Another Tree (easy) binary tree recursion tree depth first search +2 more	35.4%	easy
2	Encode and Decode Strings (medium) string serialize and deserialize array +1 more	66.2%	Med.
3	Serialize and Deserialize Binary Tree (hard) serialize and deserialize binary tree recursion +2 more	69.2%	hard