python實現整數反轉

class Solution(object):
    def reverse(self, x):
        """
        :type x: int
        :rtype: int
        """
        if x == 0:
            return 0
        flag = 0
        if x < 0:
            x = str(-x)
            flag = 1
        else:
            x = str(x)
        x = x[::-1]
        for i in x:
            if i == "0":
                x = x.replace("0", "", 1) # replace函數的使用
            else:
                break
        if flag == 0:
             x = int(x)
        else:
            x = int("-" + x)
        if -pow(2,31) <= x <= pow(2,31) - 1: # pow函數的使用
            return x
        else:
            return 0


print(Solution.reverse(Solution(), -200))