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+<h2><a href="https://leetcode.com/problems/maximum-subarray/">53. Maximum Subarray</a></h2><h3>Medium</h3><hr><div><p>Given an integer array <code>nums</code>, find the <span data-keyword="subarray-nonempty">subarray</span> with the largest sum, and return <em>its sum</em>.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<pre><strong>Input:</strong> nums = [-2,1,-3,4,-1,2,1,-5,4]
+<strong>Output:</strong> 6
+<strong>Explanation:</strong> The subarray [4,-1,2,1] has the largest sum 6.
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<pre><strong>Input:</strong> nums = [1]
+<strong>Output:</strong> 1
+<strong>Explanation:</strong> The subarray [1] has the largest sum 1.
+</pre>
+
+<p><strong class="example">Example 3:</strong></p>
+
+<pre><strong>Input:</strong> nums = [5,4,-1,7,8]
+<strong>Output:</strong> 23
+<strong>Explanation:</strong> The subarray [5,4,-1,7,8] has the largest sum 23.
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &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>
+
+<p>&nbsp;</p>
+<p><strong>Follow up:</strong> If you have figured out the <code>O(n)</code> solution, try coding another solution using the <strong>divide and conquer</strong> approach, which is more subtle.</p>
+</div>