[LeetCode]#2119. A Number After a Double Reversal

Environment: Python 3.8

Key technique: str(), int()

Reversing an integer means to reverse all its digits.

• For example, reversing 2021 gives 1202. Reversing 12300 gives 321 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.

Analysis:

1. Convert input to string format and reverse it
2. Convert it to int format.
3. Convert it to a string format and reverse it.
4. If input equal converted result, return pass.
5. Else, return Fail.

Solution:

class Solution:
    def isSameAfterReversals(self, num):
        temp=str(num)
        temp=int(temp[::-1])
        temp=str(temp)
        temp=temp[::-1]
        if int(temp) ==num:
            return True
        else:
            return False

Submissions: