3136. Valid Word

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3136. Valid Word

Description

A word is considered valid if:

  • It contains a minimum of 3 characters.
  • It contains only digits (0-9), and English letters (uppercase and lowercase).
  • It includes at least one vowel .
  • It includes at least one consonant .

You are given a string word.

Return true if word is valid, otherwise, return false.

Notes:

  • 'a', 'e', 'i', 'o', 'u', and their uppercases are vowels .
  • A consonant is an English letter that is not a vowel.

Example 1:

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Input: word = "234Adas"

Output: true

Explanation:

This word satisfies the conditions.

Example 2:

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Input: word = "b3"

Output: false

Explanation:

The length of this word is fewer than 3, and does not have a vowel.

Example 3:

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Input: word = "a3$e"

Output: false

Explanation:

This word contains a `'$'` character and does not have a consonant.

Constraints:

  • 1 <= word.length <= 20
  • word consists of English uppercase and lowercase letters, digits, '@', '#', and '$'.

Hints/Notes

  • N/A

Solution

Language: C++

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class Solution {
public:
    bool isValid(string word) {
        int length = 0;
        bool vowels = false, consonant = false;
        for (char c : word) {
            length++;
            if (c == 'A' || c == 'a' || c == 'E' || c == 'e' || c == 'i' || c == 'I' || c == 'o' || c == 'O' || c == 'u' || c == 'U') {
                vowels = true;
            } else if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
                consonant = true;
            } else if (c < '0' || c > '9') {
                return false;
            }
        }
        return length >= 3 && vowels && consonant;
    }
};