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    "https://leetcode.com/problems/rotate-string\n",
    "\n",
    "\n",
    "\n",
    "Runtime: 2 ms, faster than 13.75% of Java online submissions for Rotate String.\n",
    "Memory Usage: 39 MB, less than 5.82% of Java online submissions for Rotate String.\n",
    "\n",
    "\n",
    "\n",
    "```java\n",
    "import java.util.ArrayDeque;\n",
    "import java.util.Arrays;\n",
    "\n",
    "class Solution <T> {\n",
    "    public boolean rotateString(String A, String B) {\n",
    "        if (A.equals(\"\") && B.equals(\"\")) {\n",
    "            return true;\n",
    "        }\n",
    "\n",
    "        ArrayDeque<T> dequeA = (ArrayDeque<T>) stringToDeque(A);\n",
    "        ArrayDeque<T> dequeB = (ArrayDeque<T>) stringToDeque(B);\n",
    "\n",
    "        for (int i=0; i < dequeA.size(); ++i) {\n",
    "            dequeA = this.rotateDeque(dequeA);\n",
    "            String[] listA;\n",
    "            String[] listB;\n",
    "            listA = dequeA.toArray(new String[0]);\n",
    "            listB = dequeB.toArray(new String[0]);\n",
    "            if (Arrays.equals(listA, listB)) {\n",
    "                return true;\n",
    "            } \n",
    "        }\n",
    "\n",
    "        return false;\n",
    "    }\n",
    "\n",
    "    private ArrayDeque<String> stringToDeque(String s) {\n",
    "        ArrayDeque<String> deque = new ArrayDeque<String>();\n",
    "        for (int i=0; i<s.length(); ++i) {\n",
    "            deque.add(s.substring(i, i+1));\n",
    "        }\n",
    "        return deque;\n",
    "    }\n",
    "\n",
    "    private ArrayDeque<T> rotateDeque(ArrayDeque<T> deque) {\n",
    "        T left = deque.removeFirst();\n",
    "        deque.add(left);\n",
    "        return  deque;\n",
    "    }\n",
    "\n",
    "    public static void main(String[] args) {\n",
    "        Boolean r = new Solution().rotateString(\"\", \"\");\n",
    "        System.out.println(r.toString());\n",
    "    }\n",
    "}\n",
    "\n",
    "```\n",
    "\n",
    "\n",
    "\n",
    "Spent 40 minutes\n",
    "\n",
    "3 Shoot"
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