9. 回文数 LeetCode

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class Solution {
    func isPalindrome(_ x: Int) -> Bool {
        let str = "\(x)";
        var arr:[String] = []
        for i in str{
            arr.append(String(i))
        }
        var isTrue = true
        for i in 0..<arr.count/2 {
            if arr[i] != arr[arr.count - 1 - i]{
                isTrue = false
            }
        }
        return isTrue
    }
}