<p>Topic: <strong><em><mark>Linked List</mark></em></strong></p>
<p>Questions Successfully Completed: 1</p>
<table><tbody><tr><td><p>1) Check if it is a circular Linked List</p></td><td><p>Easy</p></td></tr></tbody></table>

<details><summary>Question</summary><div data-type="detailsContent">Input: LinkedList: 1-&gt;2-&gt;3-&gt;4-&gt;5 (the first and last node is connected, i.e. 5 --&gt; 1) Output: 1</div></details>

<pre><code class="lang-java"><span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">GfG</span>
</span>{
    <span class="hljs-function"><span class="hljs-keyword">boolean</span> <span class="hljs-title">isCircular</span><span class="hljs-params">(Node head)</span>
    </span>{
      <span class="hljs-keyword">if</span> (head ==<span class="hljs-keyword">null</span>){
          <span class="hljs-keyword">return</span> <span class="hljs-keyword">true</span>;
      }

      Node p = head;

      <span class="hljs-keyword">while</span>(p.next!=head){
          p=p.next;
          <span class="hljs-keyword">if</span>(p==<span class="hljs-keyword">null</span>){
              <span class="hljs-keyword">return</span> <span class="hljs-keyword">false</span>;
          }
      }
      <span class="hljs-keyword">return</span> <span class="hljs-keyword">true</span>;
    }
}
</code></pre>
<p>Thank you for reading :)</p>


Topic: ***<mark>Linked List</mark>***

Questions Successfully Completed: 1

<table><tbody><tr><td colspan="1" rowspan="1"><p>1) Check if it is a circular Linked List</p></td><td colspan="1" rowspan="1"><p>Easy</p></td></tr></tbody></table>

<details data-node-type="hn-details-summary"><summary>Question</summary><div data-type="detailsContent">Input: LinkedList: 1-&gt;2-&gt;3-&gt;4-&gt;5 (the first and last node is connected, i.e. 5 --&gt; 1) Output: 1</div></details>

```java
class GfG
{
    boolean isCircular(Node head)
    {
	  if (head ==null){
	      return true;
	  }
	  
	  Node p = head;
	  
	  while(p.next!=head){
	      p=p.next;
	      if(p==null){
	          return false;
	      }
	  }
	  return true;
    }
}
```

Thank you for reading :)

DSA Day 69/100