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Versions: 8
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Contents
# Copyright (c) 2010 The Mirah project authors. All Rights Reserved.
# All contributing project authors may be found in the NOTICE file.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
def fibonacci(n:int)
return n if n < 2
fibPrev = 1
fib = 1
3.upto(Math.abs(n)) do
oldFib = fib
fib = fib + fibPrev
fibPrev = oldFib
end
fib * (n<0 ? int(Math.pow(n+1, -1)) : 1)
end
puts fibonacci 1
puts fibonacci 2
puts fibonacci 3
puts fibonacci 4
puts fibonacci 5
puts fibonacci 6
puts fibonacci 7
Version data entries
8 entries across 8 versions & 1 rubygems