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@TheEndIsNear

TheEndIsNear/homework.erl

Created May 6, 2020 16:16
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homework.erl
-module(homework).
-export([xOr1/2, xOr2/2,xOr3/2, maxThree/3,howManyEqual/3]).
% three ways to represent xOr.
xOr1(X, Y) ->
not X == Y.
xOr2(X, Y) ->
X =/= Y.
xOr3(X, Y) ->
(X and not Y) or (not X and Y).
maxThree(X, Y, Z) ->
max(max(X, Y), Z).
howManyEqual(X, X, X) ->
3;
howManyEqual(X, X, _) ->
2;
howManyEqual(X, _, X) ->
2;
howManyEqual(_, X, X) ->
2;
howManyEqual(_, _, _) ->
0.
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