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算法题/allocate-mailboxes.html

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+<p>Given the array <code>houses</code> where <code>houses[i]</code> is the location of the <code>i<sup>th</sup></code> house along a street and an integer <code>k</code>, allocate <code>k</code> mailboxes in the street.</p>
+
+<p>Return <em>the <strong>minimum</strong> total distance between each house and its nearest mailbox</em>.</p>
+
+<p>The test cases are generated so that the answer fits in a 32-bit integer.</p>
+
+<p>&nbsp;</p>
+<p><strong>Example 1:</strong></p>
+<img alt="" src="https://assets.leetcode.com/uploads/2020/05/07/sample_11_1816.png" style="width: 454px; height: 154px;" />
+<pre>
+<strong>Input:</strong> houses = [1,4,8,10,20], k = 3
+<strong>Output:</strong> 5
+<strong>Explanation:</strong> Allocate mailboxes in position 3, 9 and 20.
+Minimum total distance from each houses to nearest mailboxes is |3-1| + |4-3| + |9-8| + |10-9| + |20-20| = 5 
+</pre>
+
+<p><strong>Example 2:</strong></p>
+<img alt="" src="https://assets.leetcode.com/uploads/2020/05/07/sample_2_1816.png" style="width: 433px; height: 154px;" />
+<pre>
+<strong>Input:</strong> houses = [2,3,5,12,18], k = 2
+<strong>Output:</strong> 9
+<strong>Explanation:</strong> Allocate mailboxes in position 3 and 14.
+Minimum total distance from each houses to nearest mailboxes is |2-3| + |3-3| + |5-3| + |12-14| + |18-14| = 9.
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= k &lt;= houses.length &lt;= 100</code></li>
+	<li><code>1 &lt;= houses[i] &lt;= 10<sup>4</sup></code></li>
+	<li>All the integers of <code>houses</code> are <strong>unique</strong>.</li>
+</ul>