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Given a matrix of chars from the set {"u", "l", "d", "r", "x"}, where the matrix is guaranteed to have one "x," and each of the other chars represent a direction up, down, left, and right, and a point on the matrix, write a function that returns true if "x" can be reached by following the specified path.
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Software Developer

Interviewed at Jane Street

4.4
Apr 3, 2017

Given a matrix of chars from the set {"u", "l", "d", "r", "x"}, where the matrix is guaranteed to have one "x," and each of the other chars represent a direction up, down, left, and right, and a point on the matrix, write a function that returns true if "x" can be reached by following the specified path.

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