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Merge pull request doocs#220 from huaxu1024/master

Create Solution.java

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	`1`	`+/**`
	`2`	`+ * Definition for singly-linked list.`
	`3`	`+ * public class ListNode {`
	`4`	`+ * int val;`
	`5`	`+ * ListNode next;`
	`6`	`+ * ListNode(int x) { val = x; }`
	`7`	`+ * }`
	`8`	`+ */`
	`9`	`+class Solution {`
	`10`	`+ public ListNode rotateRight(ListNode head, int k) {`
	`11`	`+ if (head == null)`
	`12`	`+ return head;`
	`13`	`+ if (head.next == null)`
	`14`	`+ return head;`
	`15`	`+`
	`16`	`+ int size = 1;`
	`17`	`+ // build ring`
	`18`	`+ ListNode nodeLast = head;`
	`19`	`+ while (nodeLast.next != null) {`
	`20`	`+ nodeLast = nodeLast.next;`
	`21`	`+ size++;`
	`22`	`+ }`
	`23`	`+ nodeLast.next = head;`
	`24`	`+`
	`25`	`+ // cutting`
	`26`	`+ k = size - k % size;`
	`27`	`+ while (k-- > 0) {`
	`28`	`+ nodeLast = head;`
	`29`	`+ head = head.next;`
	`30`	`+ }`
	`31`	`+ nodeLast.next = null;`
	`32`	`+ return head;`
	`33`	`+ }`
	`34`	`+}`

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