9 lines
166 B
Erlang
9 lines
166 B
Erlang
-module(gray).
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-export([encode/1, decode/1]).
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encode(N) -> N bxor (N bsr 1).
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decode(G) -> decode(G,0).
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decode(0,N) -> N;
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decode(G,N) -> decode(G bsr 1, G bxor N).
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