<p>给定一个数组<meta charset="UTF-8" />&nbsp;<code>points</code>&nbsp;,其中<meta charset="UTF-8" />&nbsp;<code>points[i] = [x<sub>i</sub>, y<sub>i</sub>]</code>&nbsp;表示 <strong>X-Y</strong> 平面上的一个点,<em>如果这些点构成一个&nbsp;</em><strong>回旋镖</strong>&nbsp;则返回&nbsp;<code>true</code>&nbsp;。</p>

<p><strong>回旋镖</strong>&nbsp;定义为一组三个点,这些点&nbsp;<strong>各不相同</strong>&nbsp;且&nbsp;<strong>不在一条直线上</strong>&nbsp;。</p>

<p>&nbsp;</p>

<p><strong>示例 1:</strong></p>

<pre>
<strong>输入:</strong>points = [[1,1],[2,3],[3,2]]
<strong>输出:</strong>true
</pre>

<p><strong>示例 2:</strong></p>

<pre>
<strong>输入:</strong>points = [[1,1],[2,2],[3,3]]
<strong>输出:</strong>false</pre>

<p>&nbsp;</p>

<p><strong>提示:</strong></p>
<meta charset="UTF-8" />

<ul>
	<li><code>points.length == 3</code></li>
	<li><code>points[i].length == 2</code></li>
	<li><code>0 &lt;= x<sub>i</sub>, y<sub>i</sub>&nbsp;&lt;= 100</code></li>
</ul>