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44 lines
937 B
44 lines
937 B
import functools, timeit
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def fibo_rec(num):
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if num == 0:
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return 0
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elif num == 1:
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return 1
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else:
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return fibo_rec(num - 1) + fibo_rec(num - 2)
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def fibonacci_dp(num, table):
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if table[num] >= 0:
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return table[num]
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if (num == 0 or num == 1):
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res = num
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else:
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res = fibonacci_dp(num - 1, table) + fibonacci_dp(num - 2, table)
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table[num] = res
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return res
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def fibo_dp(num):
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table = [-1] * (num + 1)
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return fibonacci_dp(num, table)
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number = int(input('Enter a number: '))
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recursive_timer = timeit.Timer(functools.partial(fibo_rec, number))
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recursive_time = recursive_timer.timeit(1)
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print(f'Calculating Fibonacci of {number} recursively took {recursive_time} seconds.')
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dp_timer = timeit.Timer(functools.partial(fibo_dp, number))
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dp_time = dp_timer.timeit(1)
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print(f'Calculating Fibonacci of {number} with dynamic programming took {dp_time} seconds.')
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