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tech(recursion/nth-fibonacci): fibonacci
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recursion-nth-fibonacci.py

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# O(n) time | O(1) space
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def getNthFib(n):
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defaultArray = [0,1]
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count = 3
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while count <= n:
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sumNo = defaultArray[0] + defaultArray[1]
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defaultArray[0] = defaultArray[1]
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defaultArray[1] = sumNo
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count = count + 1
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if n == 1:
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return defaultArray[0]
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else:
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return defaultArray[1]

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