leetcode

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Published: Apr 8, 2023 License: MIT Imports: 1 Imported by: 0

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93. Restore IP Addresses

题目

Given a string containing only digits, restore it by returning all possible valid IP address combinations.

Example:

Input: "25525511135"
Output: ["255.255.11.135", "255.255.111.35"]

题目大意

给定一个只包含数字的字符串,复原它并返回所有可能的 IP 地址格式。

解题思路

  • DFS 深搜
  • 需要注意的点是 IP 的规则,以 0 开头的数字和超过 255 的数字都为非法的。

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