2443. Sum of Number and Its Reverse
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Given a non-negative integer num, return true if num can be expressed as the sum of any non-negative integer and its reverse, or false otherwise.
Example 1:
Input: num = 443 Output: true Explanation: 172 + 271 = 443 so we return true.
Example 2:
Input: num = 63 Output: false Explanation: 63 cannot be expressed as the sum of a non-negative integer and its reverse so we return false.
Example 3:
Input: num = 181 Output: true Explanation: 140 + 041 = 181 so we return true. Note that when a number is reversed, there may be leading zeros.
Constraints:
0 <= num <= 105
Hints
Hint 1
The constraints are small enough that we can check every number.
Hint 2
To reverse a number, first convert it to a string. Then, create a new string that is the reverse of the first one. Finally, convert the new string back into a number.