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yosangwon/third.erl

Created July 2, 2017 09:01
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third.erl
-module(third).
-export([x0r1/2, x0r2/2, x0r3/2, maxThree/3, howManyEqual/3]).
x0r1(A,B) ->
A =/= B.
x0r2(A,B) ->
not (A == B).
x0r3(A,B) ->
((not A and B) or (A and not B)).
maxThree(X,Y,Z) ->
max(max(X,Y),Z).
howManyEqual(X,X,X) -> 3;
% if the last argument was same, that should matched above.
howManyEqual(X,X,_) -> 2;
howManyEqual(X,_,X) -> 2;
howManyEqual(_,X,X) -> 2;
howManyEqual(_,_,_) -> 0.
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