Solution:Minimum Time Takes to Reach Destination Without Drowning
Explore how to navigate a grid with flooded and blocked cells to reach a destination safely. Learn a matrix traversal pattern using breadth-first search to calculate the minimum time to move from source to destination while avoiding stones and flooding. Understand alternating flood spread and movement steps, handling constraints, and analyze the solution's time and space complexity.
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Statement
Given a m x n grid of the string land. It consists of the following types of cells:
S: Source cell where you are standing initially.D: Destination cell where you have to reach..: These cells are empty.X: These cells are stone.*: These cells are flooded.
Each second, you can move to a neighboring cell directly next to your current one. At the same time, any empty cell next to a flooded cell also becomes flooded. There are two challenges in your path:
You can’t step on stone cells.
You can’t step on flooded cells or cells that will flood right when you try to step on them because you’ll drown.
Return the minimum time it takes you to reach the destination from the source ...