generated from mwc/problemset_numberwords
70 lines
2.1 KiB
Python
70 lines
2.1 KiB
Python
# numberwords.py
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# --------------
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# By MWC Contributors
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# Functions to print out a verbal representation of an integer.
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MAXIMUM = 1000000
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DIGIT_NAMES = [
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"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"
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]
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TWEEN_AND_TEEN_NAMES = [
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"ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"
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]
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TENS_NAMES = [
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"", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"
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]
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def int_under_1000000_to_str(number):
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if number < 1000:
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return int_under_1000_to_str(number)
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thousands, remainder = divide_with_remainder(number, 1000)
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thousands_part = f"{int_under_1000_to_str(thousands)} thousand"
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if remainder == 0:
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return thousands_part
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else:
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remainder_part = int_under_1000_to_str(remainder)
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return f"{thousands_part} and {remainder_part}"
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def int_under_1000_to_str(number):
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if number < 100:
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return int_under_100_to_str(number)
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else:
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hundreds, remainder = divide_with_remainder(number, 100)
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if remainder == 0:
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return f"{int_under_10_to_str(hundreds)} hundred"
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else:
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return f"{int_under_10_to_str(hundreds)} hundred and {int_under_100_to_str(remainder)}"
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def int_under_100_to_str(number):
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if number < 10:
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return int_under_10_to_str(number)
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elif number < 20:
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return int_under_20_to_str(number)
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else:
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tens, ones = divide_with_remainder(number, 10)
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if ones == 0:
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return TENS_NAMES[tens]
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else:
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return f"{TENS_NAMES[tens]}-{int_under_10_to_str(ones)}"
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def int_under_20_to_str(number):
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if number < 10:
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return int_under_10_to_str(number)
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else:
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return TWEEN_AND_TEEN_NAMES[number - 10]
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def int_under_10_to_str(number):
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return DIGIT_NAMES[number]
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def divide_with_remainder(dividend, divisor):
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"""Divides one number by another, using whole-number division.
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Returns the quotient and the remainder.
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"""
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quotient = dividend // divisor
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remainder = dividend % divisor
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return quotient, remainder
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