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Contents?: true
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Compression:
Stored size: 899 Bytes
Contents
describe Integer, "#parasitic?" do
# http://www.research.att.com/~njas/sequences/A092697
PARASITIC = [1,105263157894736842,
1034482758620689655172413793,102564,
102040816326530612244897959183673469387755,
1016949152542372881355932203389830508474576271186440677966,
1014492753623188405797,1012658227848,
10112359550561797752808988764044943820224719]
it "returns true for parasitic numbers" do
PARASITIC.each do |number|
number.should be_parasitic
end
end
PARASITIC.each_with_index do |number,n|
n += 1
it "returns true for #{n}-parasitic numbers when #{n} is the argument" do
number.parasitic?(n).should be_true
end
end
it "returns false for non-parasitic numbers" do
[2, 8, 105263157894736843].each do |number|
number.should_not be_parasitic
end
end
end
Version data entries
36 entries across 36 versions & 1 rubygems