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Day35.py
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#LeetCode
#Palindrome Number
Given an integer x, return true if x is a palindrome and false otherwise.
Example 1:
*********
Input: x = 121
Output: true
Explanation: 121 reads as 121 from left to right and from right to left.
Example 2:
**********
Input: x = -121
Output: false
Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.
Example 3:
*********
Input: x = 10
Output: false
Explanation: Reads 01 from right to left. Therefore it is not a palindrome.
Follow up: Could you solve it without converting the integer to a string?
Program
*******
class Solution(object):
def isPalindrome(self, x):
"""
:type x: int
:rtype: bool
"""
if x<0:
return False
div=1
while x>=10*div:
div*=10
while x:
right=x%10
left=x//div
if left != right:
return False
x=(x%div)//10
div=div/100
return True
Input
****
x = 12
Output
*****
false