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+<h2><a href="https://leetcode.com/problems/permutations-ii">47. Permutations II</a></h2><h3>Medium</h3><hr><p>Given a collection of numbers, <code>nums</code>,&nbsp;that might contain duplicates, return <em>all possible unique permutations <strong>in any order</strong>.</em></p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<pre>
+<strong>Input:</strong> nums = [1,1,2]
+<strong>Output:</strong>
+[[1,1,2],
+ [1,2,1],
+ [2,1,1]]
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<pre>
+<strong>Input:</strong> nums = [1,2,3]
+<strong>Output:</strong> [[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]]
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= nums.length &lt;= 8</code></li>
+	<li><code>-10 &lt;= nums[i] &lt;= 10</code></li>
+</ul>