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    "https://leetcode.com/problems/toeplitz-matrix\n",
    "\n",
    "\n",
    "Runtime: 12 ms, faster than 61.19% of Go online submissions for Toeplitz Matrix.\n",
    "Memory Usage: 4.5 MB, less than 100.00% of Go online submissions for Toeplitz Matrix.\n",
    "\n",
    "\n",
    "```go\n",
    "package main\n",
    "\n",
    "import (\n",
    "\t\"fmt\"\n",
    ")\n",
    "\n",
    "type MyMatrix struct {\n",
    "\tmatrix [][]int\n",
    "\theight int\n",
    "\twidth  int\n",
    "}\n",
    "\n",
    "func (this MyMatrix) is_in_matrix(x int, y int) bool {\n",
    "\tif x < this.width && y < this.height {\n",
    "\t\treturn true\n",
    "\t} else {\n",
    "\t\treturn false\n",
    "\t}\n",
    "}\n",
    "\n",
    "func (this MyMatrix) is_it_ok(start_x int, start_y int) bool {\n",
    "\tif !(this.is_in_matrix(start_x, start_y)) {\n",
    "\t\treturn false\n",
    "\t} else {\n",
    "\t\tvalue := this.matrix[start_y][start_x]\n",
    "\t\tfor this.is_in_matrix(start_x+1, start_y+1) {\n",
    "\t\t\tstart_x += 1\n",
    "\t\t\tstart_y += 1\n",
    "\t\t\tif this.matrix[start_y][start_x] != value {\n",
    "\t\t\t\treturn false\n",
    "\t\t\t}\n",
    "\t\t}\n",
    "\t\treturn true\n",
    "\t}\n",
    "}\n",
    "\n",
    "func isToeplitzMatrix(matrix [][]int) bool {\n",
    "\t//8:38\n",
    "\tmyMatrix := MyMatrix{matrix, len(matrix), len(matrix[0])}\n",
    "\tfor y := 0; y < myMatrix.height; y++ {\n",
    "\t\tif myMatrix.is_it_ok(0, y) == false {\n",
    "\t\t\treturn false\n",
    "\t\t}\n",
    "\t}\n",
    "\tfor x := 0; x < myMatrix.width; x++ {\n",
    "\t\tif myMatrix.is_it_ok(x, 0) == false {\n",
    "\t\t\treturn false\n",
    "\t\t}\n",
    "\t}\n",
    "\treturn true\n",
    "\t//9:05\n",
    "}\n",
    "```"
   ]
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