add leetcode problem-cn part2

算法题（国内版）/problem (English)/变位词组(English) [group-anagrams-lcci].html

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+<p>Write a method to sort an array of strings so that all the anagrams are in the same group.</p>
+
+<p><b>Note:&nbsp;</b>This problem is slightly different from the original one the book.</p>
+
+<p><strong>Example:</strong></p>
+
+<pre>
+<strong>Input:</strong> <code>[&quot;eat&quot;, &quot;tea&quot;, &quot;tan&quot;, &quot;ate&quot;, &quot;nat&quot;, &quot;bat&quot;]</code>,
+<strong>Output:</strong>
+[
+  [&quot;ate&quot;,&quot;eat&quot;,&quot;tea&quot;],
+  [&quot;nat&quot;,&quot;tan&quot;],
+  [&quot;bat&quot;]
+]</pre>
+
+<p><strong>Notes: </strong></p>
+
+<ul>
+	<li>All inputs will be in lowercase.</li>
+	<li>The order of your output does not&nbsp;matter.</li>
+</ul>