Created
June 4, 2024 10:26
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A linear recursive fibonacci series
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| def fib(n): | |
| # print(f"for fib {n}") | |
| a, b = 0, 1 | |
| if n == a: return a | |
| if n == b: return b | |
| return do_fib(n-1, b, a+b) | |
| def do_fib(n, /, a=0, b=1): | |
| if n == 0: return a | |
| return do_fib(n-1, b, a+b) | |
| assert fib(0) == 0 | |
| assert(fib(1)) == 1 | |
| assert(fib(2)) == 1 | |
| assert(fib(3)) == 2 | |
| assert(fib(4)) == 3 | |
| assert(fib(5)) == 5 | |
| assert(fib(6)) == 8 |
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