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"translatedContent": "<p>给你一个长度为 <code>n</code> 的整数数组 <code>nums</code> 。请你构建一个长度为 <code>2n</code> 的答案数组 <code>ans</code> ,数组下标<strong> 从 0 开始计数 </strong>,对于所有 <code>0 <= i < n</code> 的 <code>i</code> ,满足下述所有要求:</p>\n\n<ul>\n\t<li><code>ans[i] == nums[i]</code></li>\n\t<li><code>ans[i + n] == nums[i]</code></li>\n</ul>\n\n<p>具体而言,<code>ans</code> 由两个 <code>nums</code> 数组 <strong>串联</strong> 形成。</p>\n\n<p>返回数组<em> </em><code>ans</code> 。</p>\n\n<p> </p>\n\n<p><strong>示例 1:</strong></p>\n\n<pre>\n<strong>输入:</strong>nums = [1,2,1]\n<strong>输出:</strong>[1,2,1,1,2,1]\n<strong>解释:</strong>数组 ans 按下述方式形成:\n- ans = [nums[0],nums[1],nums[2],nums[0],nums[1],nums[2]]\n- ans = [1,2,1,1,2,1]</pre>\n\n<p><strong>示例 2:</strong></p>\n\n<pre>\n<strong>输入:</strong>nums = [1,3,2,1]\n<strong>输出:</strong>[1,3,2,1,1,3,2,1]\n<strong>解释:</strong>数组 ans 按下述方式形成:\n- ans = [nums[0],nums[1],nums[2],nums[3],nums[0],nums[1],nums[2],nums[3]]\n- ans = [1,3,2,1,1,3,2,1]\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 <= 1000</code></li>\n\t<li><code>1 <= nums[i] <= 1000</code></li>\n</ul>\n",
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"difficulty": "Easy",
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@@ -137,7 +137,7 @@
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"hints": [
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"Build an array of size 2 * n and assign num[i] to ans[i] and ans[i + n]"
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],
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