class Solution(object):
def reverse(self, x):
"""
:type x: int
:rtype: int
"""
if abs(x)!=x:
a=-1
else:
a=1
x=abs(x)
total=0
while x>0:
n=x%10
total=total*10+n
x=x//10
return total*a
if __name__ == "__main__":
answer = Solution()
print answer.reverse(321)
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