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leetcode-problemset/leetcode-cn/problem (Chinese)/数组的相对排序 [relative-sort-array].html
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<p>给你两个数组,<code>arr1</code>&nbsp;<code>arr2</code><code>arr2</code>&nbsp;中的元素各不相同,<code>arr2</code> 中的每个元素都出现在&nbsp;<code>arr1</code>&nbsp;中。</p>
<p><code>arr1</code>&nbsp;中的元素进行排序,使 <code>arr1</code> 中项的相对顺序和&nbsp;<code>arr2</code>&nbsp;中的相对顺序相同。未在&nbsp;<code>arr2</code>&nbsp;中出现过的元素需要按照升序放在&nbsp;<code>arr1</code>&nbsp;的末尾。</p>
<p>&nbsp;</p>
<p><strong>示例 1</strong></p>
<pre>
<strong>输入:</strong>arr1 = [2,3,1,3,2,4,6,7,9,2,19], arr2 = [2,1,4,3,9,6]
<strong>输出:</strong>[2,2,2,1,4,3,3,9,6,7,19]
</pre>
<p><strong>示例 &nbsp;2:</strong></p>
<pre>
<strong>输入:</strong>arr1 = [28,6,22,8,44,17], arr2 = [22,28,8,6]
<strong>输出:</strong>[22,28,8,6,17,44]
</pre>
<p>&nbsp;</p>
<p><strong>提示:</strong></p>
<ul>
<li><code>1 &lt;= arr1.length, arr2.length &lt;= 1000</code></li>
<li><code>0 &lt;= arr1[i], arr2[i] &lt;= 1000</code></li>
<li><code>arr2</code>&nbsp;中的元素&nbsp;<code>arr2[i]</code>&nbsp;&nbsp;<strong>各不相同</strong>&nbsp;</li>
<li><code>arr2</code> 中的每个元素&nbsp;<code>arr2[i]</code>&nbsp;都出现在&nbsp;<code>arr1</code>&nbsp;</li>
</ul>