LeetCode | 1410. HTML Entity Parser HTML 实体解析器【Python】

女爷i 2023-07-25 05:26 30阅读 0赞

> LeetCode 1410. HTML Entity Parser HTML 实体解析器【Medium】【Python】【字符串】

### Problem ###

[LeetCode][]

**HTML entity parser** is the parser that takes HTML code as input and replace all the entities of the special characters by the characters itself.

The special characters and their entities for HTML are:

*  **Quotation Mark:** the entity is `"` and symbol character is `"`.
 *  **Single Quote Mark:** the entity is `'` and symbol character is `'`.
 *  **Ampersand:** the entity is `&` and symbol character is `&`.
 *  **Greater Than Sign:** the entity is `>` and symbol character is `>`.
 *  **Less Than Sign:** the entity is `<` and symbol character is `<`.
 *  **Slash:** the entity is `⁄` and symbol character is `/`.

Given the input `text` string to the HTML parser, you have to implement the entity parser.

Return *the text* after replacing the entities by the special characters.

**Example 1:**

Input: text = "& is an HTML entity but &ambassador; is not."
    Output: "& is an HTML entity but &ambassador; is not."
    Explanation: The parser will replace the & entity by &

**Example 2:**

Input: text = "and I quote: "...""
    Output: "and I quote: \"...\""

**Example 3:**

Input: text = "Stay home! Practice on Leetcode :)"
    Output: "Stay home! Practice on Leetcode :)"

**Example 4:**

Input: text = "x > y && x < y is always false"
    Output: "x > y && x < y is always false"

**Example 5:**

Input: text = "leetcode.com⁄problemset⁄all"
    Output: "leetcode.com/problemset/all"

**Constraints:**

*  `1 <= text.length <= 10^5`
 *  The string may contain any possible characters out of all the 256 ASCII characters.

### 问题 ###

[力扣][Link 1]

「HTML 实体解析器」 是一种特殊的解析器，它将 HTML 代码作为输入，并用字符本身替换掉所有这些特殊的字符实体。

HTML 里这些特殊字符和它们对应的字符实体包括：

*  双引号：字符实体为 " ，对应的字符是 " 。
 *  单引号：字符实体为 ’ ，对应的字符是 ’ 。
 *  与符号：字符实体为 & ，对应对的字符是 & 。
 *  大于号：字符实体为 > ，对应的字符是 > 。
 *  小于号：字符实体为 < ，对应的字符是 < 。
 *  斜线号：字符实体为 ⁄ ，对应的字符是 / 。

给你输入字符串 text ，请你实现一个 HTML 实体解析器，返回解析器解析后的结果。

**示例 1：**

输入：text = "& is an HTML entity but &ambassador; is not."
    输出："& is an HTML entity but &ambassador; is not."
    解释：解析器把字符实体 & 用 & 替换

**示例 2：**

输入：text = "and I quote: "...""
    输出："and I quote: \"...\""

**示例 3：**

输入：text = "Stay home! Practice on Leetcode :)"
    输出："Stay home! Practice on Leetcode :)"

**示例 4：**

输入：text = "x > y && x < y is always false"
    输出："x > y && x < y is always false"

**示例 5：**

输入：text = "leetcode.com⁄problemset⁄all"
    输出："leetcode.com/problemset/all"

**提示：**

*  `1 <= text.length <= 10^5`
 *  字符串可能包含 256 个ASCII 字符中的任意字符。

### 思路 ###

**字符串**

##### Python3代码 #####

class Solution:
        def entityParser(self, text: str) -> str:
            text = text.replace(""",'"')
            text = text.replace("'","'")
            text = text.replace(">",'>')
            text = text.replace("<",'<')
            text = text.replace("⁄",'/')
            text = text.replace("&","&")
            return text

### GitHub链接 ###

[Python][]

[LeetCode]: https://leetcode.com/problems/html-entity-parser/
[Link 1]: https://leetcode-cn.com/problems/html-entity-parser/
[Python]: https://github.com/Wonz5130/LeetCode-Solutions/blob/master/solutions/1410-HTML-Entity-Parser/1410.py