README.md

🚀 CheckDOM - HTML Element - coderbyte / Odoo Coding Challenge

📜 Description

Have the function CheckDOM(strParam) read the strParam parameter being passed which will be a string of HTML elements and plain text.
The elements that will be used are: <b>, <i>, <em>, <div>, <p>.

Your program should support 3 cases:

1. the string is a correct sequence of nested HTML elements, it should return true
2. the string is almost correct: by changing a single tag you can make it correct, it should return the first tag to change. Changing a tag does not include adding or removing a tag, or changing the opening into a closing tag and vice versa.
3. the string is incorrect (and to be correct it would require changing more than one element), your program should return false.

🧩 Examples

Example 1

Input: "<div><b><p>hello world</p></b></div>"
Output: true
Reason: the HTML is nested correctly

Example 2

Input: "<div><i>hello</i>world</b>"
Output: "div"
Reason: if the first `<div>` element were changed into a `<b>`, the string would be properly nested

Example 3

Input: "</div><p></p><div>"
Output: false
Reason: the order of opening and closing tags is not respected, changing any one tag cannot make it correct

Example 4

Input: "<em></em><em></em><p></b>"
Output: p

Example 5

Input: "< div>< p></p>< b><p></div>"
Output: false

🔍 Browse Resources

Search for any help or documentation you might need for this problem. For example: array indexing, Ruby hash tables, etc.

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🎨 Visual Representation

graph TD;
    A[Start] --> B{Is the string correctly nested? + sequence order};
    B -- Yes --> C[Return true];
    B -- No --> D{Can it be corrected by changing one tag? no adding or removing};
    D -- Yes --> E[Return the first tag to change];
    D -- No --> F[Return false];

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📜 License

This project is licensed under the MIT License - see the LICENSE file for details.

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