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Cedric's Balance Challenge

Published 1 decade ago by Jim White
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weights = [1..10, 1..20, 1..20, 1..40].combinations().grep { it.sum() == 40 }.collect { it.sort() }.unique()
println (weights.grep { it.inject([0], { a, v -> a + a*.plus(v) + a*.plus(-v) }).containsAll ( 1..40 )})