Leetcode Problem 756. Pyramid Transition Matrix

756. Pyramid Transition Matrix

Leetcode Solutions

Create a hashmap (transitions) to store allowed transitions for quick lookup.
Define a recursive function (can_build) that takes the current level as an argument.
If the current level has only one block, return True as the pyramid is successfully built.
Generate all possible combinations for the next level using the current level and the transitions hashmap.
Use backtracking to try each combination for the next level.
If any combination allows building the entire pyramid, return True.
Cache the results of subproblems in a memoization hashmap (memo) to avoid redundant calculations.
If no combination works, return False.

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