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"translatedContent": "<p>给你一个长度为 <code>n</code> 的整数数组 <code>nums</code> ,其中 <code>nums</code> 的所有整数都在范围 <code>[1, n]</code> 内,且每个整数出现 <strong>一次</strong> 或 <strong>两次</strong> 。请你找出所有出现 <strong>两次</strong> 的整数,并以数组形式返回。</p>\n\n<p>你必须设计并实现一个时间复杂度为 <code>O(n)</code> 且仅使用常量额外空间的算法解决此问题。</p>\n\n<p> </p>\n\n<p><strong>示例 1:</strong></p>\n\n<pre>\n<strong>输入:</strong>nums = [4,3,2,7,8,2,3,1]\n<strong>输出:</strong>[2,3]\n</pre>\n\n<p><strong>示例 2:</strong></p>\n\n<pre>\n<strong>输入:</strong>nums = [1,1,2]\n<strong>输出:</strong>[1]\n</pre>\n\n<p><strong>示例 3:</strong></p>\n\n<pre>\n<strong>输入:</strong>nums = [1]\n<strong>输出:</strong>[]\n</pre>\n\n<p> </p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>n == nums.length</code></li>\n\t<li><code>1 <= n <= 10<sup>5</sup></code></li>\n\t<li><code>1 <= nums[i] <= n</code></li>\n\t<li><code>nums</code> 中的每个元素出现 <strong>一次</strong> 或 <strong>两次</strong></li>\n</ul>\n",
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