Create README.md

Author: Mukulbaid63

Java/FloydAlgorithm/README.md

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+# Sample Input:
+
+5
+
+1 6 3 7 8
+
+2
+
+  
+
+# Sample Output:
+
+Loop exists
+
+  
+
+# Explaination:
+
+4--> size of linked list
+
+1-->6-->3-->7-->8 =>nodes of linked list
+
+2---> node to be checked
+
+</br>
+
+after creating the loop the detect loop fuction is called and the two pointer slow and fast meets if loop exists .
+For better understanding,refer <a href="https://media.geeksforgeeks.org/wp-content/cdn-uploads/20190621160855/Detect-loop-in-a-linked-list.png">here:
+  
+
+# Time complexity:
+
+O(n)