1935 - Maximum Number of Words You Can Type\.

Easy

There is a malfunctioning keyboard where some letter keys do not work. All other keys on the keyboard work properly.

Given a string text of words separated by a single space (no leading or trailing spaces) and a string brokenLetters of all distinct letter keys that are broken, return the number of words in text you can fully type using this keyboard.

Example 1:

Input: text = "hello world", brokenLetters = "ad"

Output: 1

Explanation: We cannot type "world" because the 'd' key is broken.

Example 2:

Input: text = "leet code", brokenLetters = "lt"

Output: 1

Explanation: We cannot type "leet" because the 'l' and 't' keys are broken.

Example 3:

Input: text = "leet code", brokenLetters = "e"

Output: 0

Explanation: We cannot type either word because the 'e' key is broken.

Constraints:

• <code>1 <= text.length <= 10⁴</code>

• 0 <= brokenLetters.length <= 26

• text consists of words separated by a single space without any leading or trailing spaces.

• Each word only consists of lowercase English letters.

• brokenLetters consists of distinct lowercase English letters.