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Added Mathematical Algorithms folder #152

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792a38c
Added Mathematical Algorithms folder
rahulkumaran Dec 9, 2017
59c52e9
Update proj_euler_20.py
rahulkumaran Dec 9, 2017
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12 changes: 12 additions & 0 deletions MathematicalAlgorithms/proj_euler_20.py
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def factorial(n): #function to calculate factorial
fact=1 #initialising value of fact to 1 as 1! = 1
for i in range(2,n+1):
fact *= i #Calculating factorial
return fact

if __name__=='__main__':
val = factorial(100) #Finding value of 100!
sum_digits=0 #initialising sum_digits=0
for i in range(0,len(str(val))): #converting value of 100! to string
sum_digits+=int(str(val)[i]) #Adding each digit one by one in a loop to calculate sum of digits of 100!
print sum_digits