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			27 lines
		
	
	
		
			689 B
		
	
	
	
		
			HTML
		
	
	
	
	
	
<p>教学过程中,教练示范一次,学员跟做三次。该过程被混乱剪辑后,记录于数组 <code>actions</code>,其中 <code>actions[i]</code> 表示做出该动作的人员编号。请返回教练的编号。</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>actions = [5, 7, 5, 5]
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<strong>输出:</strong>7
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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>actions = [12, 1, 6, 12, 6, 12, 6]
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<strong>输出:</strong>1
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</pre>
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<p> </p>
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<p><strong>提示:</strong></p>
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<ul>
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	<li><code>1 <= actions.length <= 10000</code></li>
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	<li><code>1 <= actions[i] < 2^31</code></li>
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</ul>
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