first commit

1 files changed, 22 insertions, 0 deletions

diff --git a/problem6.erl b/problem6.erl
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index 0000000..34a0a01
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+++ b/problem6.erl
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+-module(problem6).
+-export([solve/0]).
+
+solve() -> diff(lists:seq(1,100)).
+
+diff(List) ->
+	M = sum_of_squares(List),
+	N = square_of_sum(List),
+	if
+		M < N ->
+			N - M;
+		M > N ->
+			M - N;
+		true ->
+			0
+	end.
+
+sum_of_squares(List) ->
+	lists:sum(lists:map(fun(X) -> X*X end, List)).
+square_of_sum(List) ->
+	O = lists:sum(List),
+	O*O.