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31 changes: 22 additions & 9 deletions Project Euler/Problem 04/sol1.py
Original file line number Diff line number Diff line change
Expand Up @@ -3,13 +3,26 @@
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 x 99.
Find the largest palindrome made from the product of two 3-digit numbers which is less than N.
'''
n=int(input())
for i in range(n-1,10000,-1):
temp=str(i)
if(temp==temp[::-1]):
j=999
while(j!=99):
if((i%j==0) and (len(str(i/j))==3)):
print i
limit = int(input("limit? "))

# fetchs the next number
for number in range(limit-1,10000,-1):

# converts number into string.
strNumber = str(number)

# checks whether 'strNumber' is a palindrome.
if(strNumber == strNumber[::-1]):

divisor = 999

# if 'number' is a product of two 3-digit numbers
# then number is the answer otherwise fetch next number.
while(divisor != 99):

if((number % divisor == 0) and (len(str(number / divisor)) == 3)):

print number
exit(0)
j-=1

divisor -=1