Move files for special numbers to own directory (TheAlgorithms#10714)

Author: tianyizheng02

maths/armstrong_numbers.py renamed to maths/special_numbers/armstrong_numbers.py

@@ -1,98 +1,98 @@
-"""
-An Armstrong number is equal to the sum of its own digits each raised to the
-power of the number of digits.
-
-For example, 370 is an Armstrong number because 3*3*3 + 7*7*7 + 0*0*0 = 370.
-
-Armstrong numbers are also called Narcissistic numbers and Pluperfect numbers.
-
-On-Line Encyclopedia of Integer Sequences entry: https://oeis.org/A005188
-"""
-PASSING = (1, 153, 370, 371, 1634, 24678051, 115132219018763992565095597973971522401)
-FAILING: tuple = (-153, -1, 0, 1.2, 200, "A", [], {}, None)
-
-
-def armstrong_number(n: int) -> bool:
- """
- Return True if n is an Armstrong number or False if it is not.
-
- >>> all(armstrong_number(n) for n in PASSING)
- True
- >>> any(armstrong_number(n) for n in FAILING)
- False
- """
- if not isinstance(n, int) or n < 1:
- return False
-
- # Initialization of sum and number of digits.
- total = 0
- number_of_digits = 0
- temp = n
- # Calculation of digits of the number
- number_of_digits = len(str(n))
- # Dividing number into separate digits and find Armstrong number
- temp = n
- while temp > 0:
- rem = temp % 10
- total += rem**number_of_digits
- temp //= 10
- return n == total
-
-
-def pluperfect_number(n: int) -> bool:
- """Return True if n is a pluperfect number or False if it is not
-
- >>> all(armstrong_number(n) for n in PASSING)
- True
- >>> any(armstrong_number(n) for n in FAILING)
- False
- """
- if not isinstance(n, int) or n < 1:
- return False
-
- # Init a "histogram" of the digits
- digit_histogram = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
- digit_total = 0
- total = 0
- temp = n
- while temp > 0:
- temp, rem = divmod(temp, 10)
- digit_histogram[rem] += 1
- digit_total += 1
-
- for cnt, i in zip(digit_histogram, range(len(digit_histogram))):
- total += cnt * i**digit_total
-
- return n == total
-
-
-def narcissistic_number(n: int) -> bool:
- """Return True if n is a narcissistic number or False if it is not.
-
- >>> all(armstrong_number(n) for n in PASSING)
- True
- >>> any(armstrong_number(n) for n in FAILING)
- False
- """
- if not isinstance(n, int) or n < 1:
- return False
- expo = len(str(n)) # the power that all digits will be raised to
- # check if sum of each digit multiplied expo times is equal to number
- return n == sum(int(i) ** expo for i in str(n))
-
-
-def main():
- """
- Request that user input an integer and tell them if it is Armstrong number.
- """
- num = int(input("Enter an integer to see if it is an Armstrong number: ").strip())
- print(f"{num} is {'' if armstrong_number(num) else 'not '}an Armstrong number.")
- print(f"{num} is {'' if narcissistic_number(num) else 'not '}an Armstrong number.")
- print(f"{num} is {'' if pluperfect_number(num) else 'not '}an Armstrong number.")
-
-
-if __name__ == "__main__":
- import doctest
-
- doctest.testmod()
- main()
+"""
+An Armstrong number is equal to the sum of its own digits each raised to the
+power of the number of digits.
+
+For example, 370 is an Armstrong number because 3*3*3 + 7*7*7 + 0*0*0 = 370.
+
+Armstrong numbers are also called Narcissistic numbers and Pluperfect numbers.
+
+On-Line Encyclopedia of Integer Sequences entry: https://oeis.org/A005188
+"""
+PASSING = (1, 153, 370, 371, 1634, 24678051, 115132219018763992565095597973971522401)
+FAILING: tuple = (-153, -1, 0, 1.2, 200, "A", [], {}, None)
+
+
+def armstrong_number(n: int) -> bool:
+ """
+ Return True if n is an Armstrong number or False if it is not.
+
+ >>> all(armstrong_number(n) for n in PASSING)
+ True
+ >>> any(armstrong_number(n) for n in FAILING)
+ False
+ """
+ if not isinstance(n, int) or n < 1:
+ return False
+
+ # Initialization of sum and number of digits.
+ total = 0
+ number_of_digits = 0
+ temp = n
+ # Calculation of digits of the number
+ number_of_digits = len(str(n))
+ # Dividing number into separate digits and find Armstrong number
+ temp = n
+ while temp > 0:
+ rem = temp % 10
+ total += rem**number_of_digits
+ temp //= 10
+ return n == total
+
+
+def pluperfect_number(n: int) -> bool:
+ """Return True if n is a pluperfect number or False if it is not
+
+ >>> all(armstrong_number(n) for n in PASSING)
+ True
+ >>> any(armstrong_number(n) for n in FAILING)
+ False
+ """
+ if not isinstance(n, int) or n < 1:
+ return False
+
+ # Init a "histogram" of the digits
+ digit_histogram = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+ digit_total = 0
+ total = 0
+ temp = n
+ while temp > 0:
+ temp, rem = divmod(temp, 10)
+ digit_histogram[rem] += 1
+ digit_total += 1
+
+ for cnt, i in zip(digit_histogram, range(len(digit_histogram))):
+ total += cnt * i**digit_total
+
+ return n == total
+
+
+def narcissistic_number(n: int) -> bool:
+ """Return True if n is a narcissistic number or False if it is not.
+
+ >>> all(armstrong_number(n) for n in PASSING)
+ True
+ >>> any(armstrong_number(n) for n in FAILING)
+ False
+ """
+ if not isinstance(n, int) or n < 1:
+ return False
+ expo = len(str(n)) # the power that all digits will be raised to
+ # check if sum of each digit multiplied expo times is equal to number
+ return n == sum(int(i) ** expo for i in str(n))
+
+
+def main():
+ """
+ Request that user input an integer and tell them if it is Armstrong number.
+ """
+ num = int(input("Enter an integer to see if it is an Armstrong number: ").strip())
+ print(f"{num} is {'' if armstrong_number(num) else 'not '}an Armstrong number.")
+ print(f"{num} is {'' if narcissistic_number(num) else 'not '}an Armstrong number.")
+ print(f"{num} is {'' if pluperfect_number(num) else 'not '}an Armstrong number.")
+
+
+if __name__ == "__main__":
+ import doctest
+
+ doctest.testmod()
+ main()