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1636-sort-array-by-increasing-frequency/README.md

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+<h2><a href="https://leetcode.com/problems/sort-array-by-increasing-frequency/">1636. Sort Array by Increasing Frequency</a></h2><h3>Easy</h3><hr><div><p>Given an array of integers <code>nums</code>, sort the array in <strong>increasing</strong> order based on the frequency of the values. If multiple values have the same frequency, sort them in <strong>decreasing</strong> order.</p>
+
+<p>Return the <em>sorted array</em>.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<pre><strong>Input:</strong> nums = [1,1,2,2,2,3]
+<strong>Output:</strong> [3,1,1,2,2,2]
+<strong>Explanation:</strong> '3' has a frequency of 1, '1' has a frequency of 2, and '2' has a frequency of 3.
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<pre><strong>Input:</strong> nums = [2,3,1,3,2]
+<strong>Output:</strong> [1,3,3,2,2]
+<strong>Explanation:</strong> '2' and '3' both have a frequency of 2, so they are sorted in decreasing order.
+</pre>
+
+<p><strong class="example">Example 3:</strong></p>
+
+<pre><strong>Input:</strong> nums = [-1,1,-6,4,5,-6,1,4,1]
+<strong>Output:</strong> [5,-1,4,4,-6,-6,1,1,1]</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= nums.length &lt;= 100</code></li>
+	<li><code>-100 &lt;= nums[i] &lt;= 100</code></li>
+</ul>
+</div>