Had my first onsite screening for Google (1 round for an hour) and got the question.\n\nGiven a matrix where land is marked as "X", water is marked as ".". A "." is considered an ocean if it\'s unbounded on atleast one side. A coast is any **land directly connected to the ocean**. Water grid bounded on all sides by land is considerd a lake. \nFind if a given grid (co-ordinate) is a coast.\n\nEg:\nx x x x x x\n. . . x . x . .\n. . . x x . x .\n\nisCoast(1, 3) returns True\n\n. . . . . . . . \nx x x . x .\nx . x x . x .\nx x x . x x\nx x x x x x\n\nisCoast(3, 2) returns False

Had my first onsite screening for Google (1 round for an hour) and got the question.\n\nGiven a matrix where land is marked as "X", water is marked as ".". A ".