Sync LeetCode submission Runtime - 0 ms (100.00%), Memory - 17.6 MB (98.01%)

Author: jimit105

3396-valid-word/README.md

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+<p>A word is considered <strong>valid</strong> if:</p>
+
+<ul>
+	<li>It contains a <strong>minimum</strong> of 3 characters.</li>
+	<li>It contains only digits (0-9), and English letters (uppercase and lowercase).</li>
+	<li>It includes <strong>at least</strong> one <strong>vowel</strong>.</li>
+	<li>It includes <strong>at least</strong> one <strong>consonant</strong>.</li>
+</ul>
+
+<p>You are given a string <code>word</code>.</p>
+
+<p>Return <code>true</code> if <code>word</code> is valid, otherwise, return <code>false</code>.</p>
+
+<p><strong>Notes:</strong></p>
+
+<ul>
+	<li><code>&#39;a&#39;</code>, <code>&#39;e&#39;</code>, <code>&#39;i&#39;</code>, <code>&#39;o&#39;</code>, <code>&#39;u&#39;</code>, and their uppercases are <strong>vowels</strong>.</li>
+	<li>A <strong>consonant</strong> is an English letter that is not a vowel.</li>
+</ul>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">word = &quot;234Adas&quot;</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">true</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>This word satisfies the conditions.</p>
+</div>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">word = &quot;b3&quot;</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">false</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>The length of this word is fewer than 3, and does not have a vowel.</p>
+</div>
+
+<p><strong class="example">Example 3:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">word = &quot;a3$e&quot;</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">false</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>This word contains a <code>&#39;$&#39;</code> character and does not have a consonant.</p>
+</div>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= word.length &lt;= 20</code></li>
+	<li><code>word</code> consists of English uppercase and lowercase letters, digits, <code>&#39;@&#39;</code>, <code>&#39;#&#39;</code>, and <code>&#39;$&#39;</code>.</li>
+</ul>

3396-valid-word/solution.py

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+# Approach: One-Time Traversal
+
+# Time: O(n)
+# Space: O(1)
+
+class Solution:
+    def isValid(self, word: str) -> bool:
+        if len(word) < 3:
+            return False
+
+        has_vowel = False
+        has_consonant = False
+
+        for c in word:
+            if c.isalpha():
+                if c.lower() in 'aeiou':
+                    has_vowel = True
+                else:
+                    has_consonant = True
+            elif not c.isdigit():
+                return False
+
+        return has_vowel and has_consonant