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Create 141. Linked List Cycle.java

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	`1`	`+//Fast and slow pointer`
	`2`	`+`
	`3`	`+publicclassSolution {`
	`4`	`+publicbooleanhasCycle(ListNodehead) {`
	`5`	`+ListNodefast =head;`
	`6`	`+ListNodeslow =head;`
	`7`	`+while (fast!=null &&fast.next!=null) {`
	`8`	`+fast =fast.next.next;`
	`9`	`+slow =slow.next;`
	`10`	`+if (fast ==slow)returntrue;`
	`11`	`+ }`
	`12`	`+returnfalse;`
	`13`	`+ }`
	`14`	`+}`

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