Merge pull request #192 from saurabhcommand/master

Adding 141.cpp

Author: larissalages

leetcode/cpp/linkedlist/141.cpp

@@ -0,0 +1,16 @@
+class Solution {
+public:
+    bool hasCycle(ListNode *head) {
+        if(head==NULL || head->next==NULL)
+            return 0;
+        ListNode* slow=head,*fast=head;
+        while(fast!=NULL && fast->next!=NULL)
+        {
+            slow=slow->next;
+            fast=fast->next->next;
+            if(slow==fast)
+                return 1;
+        }
+        return 0;
+    }
+};