Added README.md file for Intersection of Two Arrays

Author: kaleaditya779

349-intersection-of-two-arrays/README.md

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+<h2><a href="https://leetcode.com/problems/intersection-of-two-arrays">Intersection of Two Arrays</a></h2> <img src='https://img.shields.io/badge/Difficulty-Easy-brightgreen' alt='Difficulty: Easy' /><hr><p>Given two integer arrays <code>nums1</code> and <code>nums2</code>, return <em>an array of their <span data-keyword="array-intersection">intersection</span></em>. Each element in the result must be <strong>unique</strong> and you may return the result in <strong>any order</strong>.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<pre>
+<strong>Input:</strong> nums1 = [1,2,2,1], nums2 = [2,2]
+<strong>Output:</strong> [2]
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<pre>
+<strong>Input:</strong> nums1 = [4,9,5], nums2 = [9,4,9,8,4]
+<strong>Output:</strong> [9,4]
+<strong>Explanation:</strong> [4,9] is also accepted.
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= nums1.length, nums2.length &lt;= 1000</code></li>
+	<li><code>0 &lt;= nums1[i], nums2[i] &lt;= 1000</code></li>
+</ul>