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算法题（国外版）/student-attendance-record-i.html

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+<p>You are given a string <code>s</code> representing an attendance record for a student where each character signifies whether the student was absent, late, or present on that day. The record only contains the following three characters:</p>
+
+<ul>
+	<li><code>&#39;A&#39;</code>: Absent.</li>
+	<li><code>&#39;L&#39;</code>: Late.</li>
+	<li><code>&#39;P&#39;</code>: Present.</li>
+</ul>
+
+<p>The student is eligible for an attendance award if they meet <strong>both</strong> of the following criteria:</p>
+
+<ul>
+	<li>The student was absent (<code>&#39;A&#39;</code>) for <strong>strictly</strong> fewer than 2 days <strong>total</strong>.</li>
+	<li>The student was <strong>never</strong> late (<code>&#39;L&#39;</code>) for 3 or more <strong>consecutive</strong> days.</li>
+</ul>
+
+<p>Return <code>true</code><em> if the student is eligible for an attendance award, or </em><code>false</code><em> otherwise</em>.</p>
+
+<p>&nbsp;</p>
+<p><strong>Example 1:</strong></p>
+
+<pre>
+<strong>Input:</strong> s = &quot;PPALLP&quot;
+<strong>Output:</strong> true
+<strong>Explanation:</strong> The student has fewer than 2 absences and was never late 3 or more consecutive days.
+</pre>
+
+<p><strong>Example 2:</strong></p>
+
+<pre>
+<strong>Input:</strong> s = &quot;PPALLL&quot;
+<strong>Output:</strong> false
+<strong>Explanation:</strong> The student was late 3 consecutive days in the last 3 days, so is not eligible for the award.
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= s.length &lt;= 1000</code></li>
+	<li><code>s[i]</code> is either <code>&#39;A&#39;</code>, <code>&#39;L&#39;</code>, or <code>&#39;P&#39;</code>.</li>
+</ul>