Reversing an integer means to reverse all its digits.
- For example, reversing
2021
gives1202
. Reversing12300
gives321
as the leading zeros are not retained.
Given an integer num
, reverse num
to get reversed1
, then reverse reversed1
to get reversed2
. Return true
if reversed2
equals num
. Otherwise return false
.
Example 1:
Input: num = 526
Output: true
Explanation: Reverse num to get 625, then reverse 625 to get 526, which equals num.
Example 2:
Input: num = 1800
Output: false
Explanation: Reverse num to get 81, then reverse 81 to get 18, which does not equal num.
Example 3:
Input: num = 0
Output: true
Explanation: Reverse num to get 0, then reverse 0 to get 0, which equals num.
Constraints:
-
0 <= num <= 106
SOLUTION:
class Solution:
def isSameAfterReversals(self, num: int) -> bool:
if num == 0:
return True
return num % 10 != 0
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