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Grokking the Coding Interview Patterns in Python

Solution: Cherry Pickup

Explore how to solve the Cherry Pickup problem using dynamic programming by managing two synchronized paths on a grid. Understand the memoization technique that optimizes the traversal and maximizes cherry collection while avoiding obstacles and revisiting cells.

We'll cover the following...

Statement

You are given an n×nn \times n grid representing a field of cherries. Each cell in the grid can have one of three possible values:

  • 00: An empty cell that can be walked through

  • 11: A cell containing a cherry that can be picked and then passed through

  • ...