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30 lines
956 B
HTML
30 lines
956 B
HTML
<p>给你一个整数数组 <code>nums</code> ,除某个元素仅出现 <strong>一次</strong> 外,其余每个元素都恰出现 <strong>三次 。</strong>请你找出并返回那个只出现了一次的元素。</p>
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<p>你必须设计并实现线性时间复杂度的算法且使用常数级空间来解决此问题。</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>nums = [2,2,3,2]
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<strong>输出:</strong>3
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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>nums = [0,1,0,1,0,1,99]
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<strong>输出:</strong>99
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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 <= nums.length <= 3 * 10<sup>4</sup></code></li>
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<li><code>-2<sup>31</sup> <= nums[i] <= 2<sup>31</sup> - 1</code></li>
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<li><code>nums</code> 中,除某个元素仅出现 <strong>一次</strong> 外,其余每个元素都恰出现 <strong>三次</strong></li>
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</ul>
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