added a solution

data_structures/arrays/interview_questions/array_interview_questions.ipynb

@@ -12,22 +12,83 @@
    "metadata": {},
    "source": [
     "### Problem 1:\n",
-    "Given a N*N matrix, rotate the matrix by 90 degrees clockwise\n",
+    "Given a N*N matrix, mirror the matrix.\n",
     "- Input: [[1, 2, 3],\n",
     "          [4, 5, 6],\n",
     "          [7, 8, 9]]\n",
     "          \n",
-    "- Output: [[7, 4, 1]\n",
-    "           [8, 5, 2] \n",
-    "           [9, 6, 3]]"
+    "- Output: [[3, 2, 1],\n",
+    "           [6, 5, 4],\n",
+    "           [9, 8, 7]]"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 9,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[[3, 2, 1], [6, 5, 4], [9, 8, 7]]"
+      ]
+     },
+     "execution_count": 9,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "def rotateMatrix(arr):\n",
+    "    N = len(arr) - 1\n",
+    "    for i in range(0, N):\n",
+    "        x = 0\n",
+    "        while x <= N:\n",
+    "            arr[x][i], arr[x][N - i] = arr[x][N - i], arr[x][i]\n",
+    "            x += 1\n",
+    "    return arr\n",
+    "\n",
+    "rotateMatrix([[1, 2, 3],\n",
+    "          [4, 5, 6],\n",
+    "          [7, 8, 9]])\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "arr = [[1, 2, 3],\n",
+    "          [4, 5, 6],\n",
+    "          [7, 8, 9]]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "1 3\n",
+      "4 6\n",
+      "7 9\n",
+      "2 2\n",
+      "5 5\n",
+      "8 8\n"
+     ]
+    }
+   ],
+   "source": [
+    "for i in range(0, len(arr) - 1):\n",
+    "    x = 0\n",
+    "    while x <= len(arr) - 1:\n",
+    "        print(arr[x][i], arr[x][len(arr) - i - 1])\n",
+    "        x += 1"
+   ]
   }
  ],
  "metadata": {