[Leetcode/python] Defanging an IP Address

📌 문제

https://leetcode.com/problems/defanging-an-ip-address/description/

📝 해결

시간 복잡도 : O(n)

class Solution:
    def defangIPaddr(self, address: str) -> str:
        str = ''
        for i in range(len(address)):
            if address[i] == '.':
                str += '[.]'
            else:
                str += address[i]
        return str