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Simulate Orchard Rot Spread

ZipRecruiter● MediumNEW GRADOA

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Problem statement

An orchard is a rectangular array of strings using - for empty, T for healthy trees, and R for rotten trees.

Each day is synchronous: trees rotten at the start of the day infect orthogonally adjacent healthy trees; newly rotten trees begin spreading the next day.

Return the orchard after exactly days days.

Function

simulateOrchard(orchard: String[], days: int) → String[]

Examples

Example 1

orchard = ["RT-","TTT"]days = 1return = ["RR-","RTT"]

Only trees adjacent to the original rotten tree change on day one.

Example 2

orchard = ["R-T","TTT"]days = 0return = ["R-T","TTT"]

Zero days leaves the orchard unchanged.

Constraints

1 <= rows,columns <= 200
0 <= days <= 100000