Trees and Dynamic Programming | Dataford Interview Questions

Describe a time you solved a problem using trees and dynamic programming, and walk me through your approach.

Implement max_non_adjacent_tree(root). The input is a binary tree represented by nested dictionaries with value, left, and right keys, or None; return the maximum sum of node values where no selected node is directly connected to another selected node.

Constraints

The tree contains at most 10^5 nodes.
Each node dictionary has integer key value and left and right keys.
Node values are integers from 0 through 10^9.
The tree may be empty.

Function Signature

def max_non_adjacent_tree(root):

Your question is Trees and Dynamic Programming. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Describe a time you solved a problem using trees and dynamic programming, and walk me through your approach.

Constraints

The tree contains at most 10^5 nodes.
Each node dictionary has integer key value and left and right keys.
Node values are integers from 0 through 10^9.
The tree may be empty.

Function Signature

def max_non_adjacent_tree(root):

Your question is Trees and Dynamic Programming. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.