Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward.
Example 1:
Input: 121
Output: true
Example 2:
Input: -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: 10
Output: false
Explanation: Reads 01 from right to left. Therefore it is not a palindrome.
解題思路：花花醬
func isPalindrome(x int) bool {
if x < 0 {
return false
}
bits := int(math.Log10(float64(x))) + 1
div := int(math.Pow10(bits - 1))
for i := 0; i < bits/2; i++ {
if x/div != x%10 {
return false
}
x = (x - x/div*div) / 10
div /= 100
}
return true
}
