1. You are given a singly linkedlist. 2. You need to check whether it is circular or not. 3. A linkedlist is said to be circular if tail next points to head of linkedlist.
Input Format
Input has been managed for you
Output Format
Output has been managed for you
Constraints
n<=10^4
Notice
Try First, Check Solution later
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Input
5 1 1 2 3 4 5
Output
true