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1628. Design an Expression Tree With Evaluate Function (Medium)

Related Topics

[Math] [Stack] [Tree] [Design] [Binary Tree]

Hints

Hint 1

Apply the concept of Polymorphism to get a good design

Hint 2

Implement the Node class using NumericNode and OperatorNode classes.

Hint 3

NumericNode only maintains the value and evaluate returns this value.

Hint 4

OperatorNode Maintains the left and right nodes representing the left and right operands, and the evaluate function applies the operator to them.