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Changed problems to work with a driver function
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103
Problems/Problem16.py
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103
Problems/Problem16.py
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#Project Euler/Python/Problem16.py
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#Matthew Ellison
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# Created: 02-03-19
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#Modified: 03-28-19
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#What is the sum of the digits of the number 2^1000?
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#Unless otherwise listed, all of my non-standard imports can be gotten from my pyClasses repository at https://bitbucket.org/Mattrixwv/pyClasses
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"""
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Copyright (C) 2019 Matthew Ellison
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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from Problems.Problem import Problem
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from Stopwatch import Stopwatch
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from Unsolved import Unsolved
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class Problem16(Problem):
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#Variables
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__numToPower = 2 #The number that is going to be raised to a power
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__power = 1000 #The power that the number is going to be raised to
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#Functions
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#Constructor
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def __init__(self):
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super().__init__("What is the sum of the digits of the number 2^1000?")
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self.num = 0
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self.sumOfElements = 0
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#Operational functions
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#Solve the problem
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def solve(self):
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#If the problem has already been solved do nothing and end the function
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if(self.solved):
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return
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#Start the timer
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self.timer.start()
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#Get the number
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self.num = self.__numToPower ** self.__power
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#Change the number to a string
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stringOfNum = str(self.num)
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#Step through the string one element at a time
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for cnt in range(0, len(stringOfNum)):
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#Change the character to an int and add it to the sum
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self.sumOfElements += int(stringOfNum[cnt])
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#Stop the timer
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self.timer.stop()
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#Save the result
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self.result = str(self.__numToPower) + "^" + str(self.__power) + " = " + stringOfNum + "\nThe sum of the elements is " + str(self.sumOfElements)
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#Throw a flag to show the problem is solved
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self.solved = True
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#Reset the problem so it can be run again
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def reset(self):
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super().reset()
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self.num = 0
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self.sumOfElements = 0
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#Gets
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#Returns the number that was calculated
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def getNumber(self):
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#If the problem hasn't been solved throw an exception
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if(not self.solved):
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raise Unsolved("You must solve the problem before you can get the number")
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return self.num
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#Return the sum of digits of the number
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def getSum(self):
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#If the problem hasn't been solved throw an exception
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if(not self.solved):
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raise Unsolved("You must solve the problem before you can get the sum of the digits of the number")
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return self.sumOfElements
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#If you are running this file, automatically start the correct function
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if __name__ == "__main__":
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problem = Problem16()
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print(problem.getDescription()) #Print the description of the problem
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problem.solve() #Solve the problem
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#Print the results
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print(problem.getResult())
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print("It took " + problem.getTime() + " to solve this algorithm")
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"""Results:
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2^1000 = 10715086071862673209484250490600018105614048117055336074437503883703510511249361224931983788156958581275946729175531468251871452856923140435984577574698574803934567774824230985421074605062371141877954182153046474983581941267398767559165543946077062914571196477686542167660429831652624386837205668069376
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The sum of the digits is: 1366
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It took 86.206 microseconds to run this algorithm
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"""
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