Sha256: d8c9037b8155b5997a7c4e570c813634236f4b97191fe8aded2f3a2c0df62bea
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Stored size: 588 Bytes
Contents
describe Integer, "#biquadratic?" do
# A000583
@seq = [0,1,16,81,256,625,1296,2401,4096,6561,10000,
14641,20736,28561,38416,50625,65536,83521,104976,
130321,160000,194481,234256,279841,331776,390625,
456976,531441,614656,707281,810000,923521,1048576,
1185921].to_seq
@seq.each do |n|
it "should return true for biquadratic number #{n}" do
n.should be_biquadratic
end
end
@seq.invert.sample(10).each do |n|
it "should return false for non-biquadratic number #{n}" do
n.should_not be_biquadratic
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems