Project Notes

Kth Largest Element in an Array

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Description

tab: English
 
<p>Given an integer array <code>nums</code> and an integer <code>k</code>, return <em>the</em> <code>k<sup>th</sup></code> <em>largest element in the array</em>.</p>
 
<p>Note that it is the <code>k<sup>th</sup></code> largest element in the sorted order, not the <code>k<sup>th</sup></code> distinct element.</p>
 
<p>Can you solve it without sorting?</p>
 
<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>
<pre><strong>Input:</strong> nums = [3,2,1,5,6,4], k = 2
<strong>Output:</strong> 5
</pre><p><strong class="example">Example 2:</strong></p>
<pre><strong>Input:</strong> nums = [3,2,3,1,2,4,5,5,6], k = 4
<strong>Output:</strong> 4
</pre>
<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>
 
<ul>
	<li><code>1 &lt;= k &lt;= nums.length &lt;= 10<sup>5</sup></code></li>
	<li><code>-10<sup>4</sup> &lt;= nums[i] &lt;= 10<sup>4</sup></code></li>
</ul>
 
 
 
---
 
[submissions](https://leetcode.com/problems/kth-largest-element-in-an-array/submissions/) | [solutions](https://leetcode.com/problems/kth-largest-element-in-an-array/solutions/)
 
 
tab: 中文
 
<p>给定整数数组 <code>nums</code> 和整数 <code>k</code>，请返回数组中第 <code><strong>k</strong></code> 个最大的元素。</p>
 
<p>请注意，你需要找的是数组排序后的第 <code>k</code> 个最大的元素，而不是第 <code>k</code> 个不同的元素。</p>
 
<p>你必须设计并实现时间复杂度为 <code>O(n)</code> 的算法解决此问题。</p>
 
<p>&nbsp;</p>
 
<p><strong>示例 1:</strong></p>
 
<pre>
<strong>输入:</strong> <code>[3,2,1,5,6,4],</code> k = 2
<strong>输出:</strong> 5
</pre>
 
<p><strong>示例&nbsp;2:</strong></p>
 
<pre>
<strong>输入:</strong> <code>[3,2,3,1,2,4,5,5,6], </code>k = 4
<strong>输出:</strong> 4</pre>
 
<p>&nbsp;</p>
 
<p><strong>提示： </strong></p>
 
<ul>
	<li><code>1 &lt;= k &lt;= nums.length &lt;= 10<sup>5</sup></code></li>
	<li><code>-10<sup>4</sup>&nbsp;&lt;= nums[i] &lt;= 10<sup>4</sup></code></li>
</ul>
 
 
 
---
 
[提交记录](https://leetcode.cn/problems/kth-largest-element-in-an-array/submissions/) | [题解](https://leetcode.cn/problems/kth-largest-element-in-an-array/solution/)

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