mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-28 07:21:07 +00:00
7f04e5cd34
* spelling corrections * review * improved documentation, removed redundant variables, added testing * added type hint * camel case to snake case * spelling fix * review * python --> Python # it is a brand name, not a snake * explicit cast to int * spaces in int list * "!= None" to "is not None" * Update comb_sort.py * various spelling corrections in documentation & several variables naming conventions fix * + char in file name * import dependency - bug fix Co-authored-by: John Law <johnlaw.po@gmail.com>
65 lines
1.9 KiB
Python
65 lines
1.9 KiB
Python
"""
|
|
This is a pure Python implementation of Dynamic Programming solution to the fibonacci sequence problem.
|
|
"""
|
|
|
|
|
|
class Fibonacci:
|
|
def __init__(self, N=None):
|
|
self.fib_array = []
|
|
if N:
|
|
N = int(N)
|
|
self.fib_array.append(0)
|
|
self.fib_array.append(1)
|
|
for i in range(2, N + 1):
|
|
self.fib_array.append(self.fib_array[i - 1] + self.fib_array[i - 2])
|
|
elif N == 0:
|
|
self.fib_array.append(0)
|
|
print(self.fib_array)
|
|
|
|
def get(self, sequence_no=None):
|
|
"""
|
|
>>> Fibonacci(5).get(3)
|
|
[0, 1, 1, 2, 3, 5]
|
|
[0, 1, 1, 2]
|
|
>>> Fibonacci(5).get(6)
|
|
[0, 1, 1, 2, 3, 5]
|
|
Out of bound.
|
|
>>> Fibonacci(5).get(-1)
|
|
[0, 1, 1, 2, 3, 5]
|
|
[]
|
|
"""
|
|
if sequence_no is not None:
|
|
if sequence_no < len(self.fib_array):
|
|
return print(self.fib_array[: sequence_no + 1])
|
|
else:
|
|
print("Out of bound.")
|
|
else:
|
|
print("Please specify a value")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
print("\n********* Fibonacci Series Using Dynamic Programming ************\n")
|
|
print("\n Enter the upper limit for the fibonacci sequence: ", end="")
|
|
try:
|
|
N = int(input().strip())
|
|
fib = Fibonacci(N)
|
|
print(
|
|
"\n********* Enter different values to get the corresponding fibonacci "
|
|
"sequence, enter any negative number to exit. ************\n"
|
|
)
|
|
while True:
|
|
try:
|
|
i = int(input("Enter value: ").strip())
|
|
if i < 0:
|
|
print("\n********* Good Bye!! ************\n")
|
|
break
|
|
fib.get(i)
|
|
except NameError:
|
|
print("\nInvalid input, please try again.")
|
|
except NameError:
|
|
print("\n********* Invalid input, good bye!! ************\n")
|
|
|
|
import doctest
|
|
|
|
doctest.testmod()
|