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leetcode-problemset/leetcode-cn/problem (Chinese)/最大和最小 K 个元素的绝对差 [absolute-difference-between-maximum-and-minimum-k-elements].html
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<p>给你一个整数数组 <code>nums</code> 和一个整数 <code>k</code></p>
<p>请计算以下两者的绝对差值:</p>
<ul>
<li>数组中 <code>k</code><strong>最大</strong> 元素的<strong>总和</strong></li>
<li>数组中 <code>k</code><strong>最小</strong> 元素的<strong>总和</strong></li>
</ul>
<p>返回表示此差值的整数。</p>
<p>&nbsp;</p>
<p><strong class="example">示例 1</strong></p>
<div class="example-block">
<p><strong>输入:</strong> <span class="example-io">nums = [5,2,2,4], k = 2</span></p>
<p><strong>输出:</strong> <span class="example-io">5</span></p>
<p><strong>解释:</strong></p>
<ul>
<li><code>k = 2</code> 个最大的元素是 4 和 5。它们的总和是 <code>4 + 5 = 9</code></li>
<li><code>k = 2</code> 个最小的元素是 2 和 2。它们的总和是 <code>2 + 2 = 4</code></li>
<li>绝对差值是 <code>abs(9 - 4) = 5</code></li>
</ul>
</div>
<p><strong class="example">示例 2</strong></p>
<div class="example-block">
<p><strong>输入:</strong> <span class="example-io">nums = [100], k = 1</span></p>
<p><strong>输出:</strong> <span class="example-io">0</span></p>
<p><strong>解释:</strong></p>
<ul>
<li>最大的元素是 100。</li>
<li>最小的元素是 100。</li>
<li>绝对差值是 <code>abs(100 - 100) = 0</code></li>
</ul>
</div>
<p>&nbsp;</p>
<p><strong>提示:</strong></p>
<ul>
<li><code>1 &lt;= n == nums.length &lt;= 100</code></li>
<li><code>1 &lt;= nums[i] &lt;= 100</code></li>
<li><code>1 &lt;= k &lt;= n</code></li>
</ul>