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30 lines
1.0 KiB
HTML
30 lines
1.0 KiB
HTML
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<p>给定一个数组<meta charset="UTF-8" /> <code>points</code> ，其中<meta charset="UTF-8" /> <code>points[i] = [x<sub>i</sub>, y<sub>i</sub>]</code> 表示 <strong>X-Y</strong> 平面上的一个点，<em>如果这些点构成一个 </em><strong>回旋镖</strong> 则返回 <code>true</code> 。</p>
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<p><strong>回旋镖</strong> 定义为一组三个点，这些点 <strong>各不相同</strong> 且 <strong>不在一条直线上</strong> 。</p>
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<p> </p>
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<p><strong>示例 1：</strong></p>
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<pre>
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<strong>输入：</strong>points = [[1,1],[2,3],[3,2]]
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<strong>输出：</strong>true
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</pre>
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<p><strong>示例 2：</strong></p>
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<pre>
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<strong>输入：</strong>points = [[1,1],[2,2],[3,3]]
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<strong>输出：</strong>false</pre>
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<p> </p>
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<p><strong>提示：</strong></p>
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<meta charset="UTF-8" />
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<ul>
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<li><code>points.length == 3</code></li>
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<li><code>points[i].length == 2</code></li>
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<li><code>0 <= x<sub>i</sub>, y<sub>i</sub> <= 100</code></li>
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</ul>
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