{
  "#": [
    "The expected outputs are represented as arrays of strings to improve readability in this JSON file.",
    "Your track may choose whether to present the input as a single string (concatenating all the lines) or as the list."
  ],
  "cases": [
    {
      "description": "no rows",
      "input" : [],
      "expected": []
    },
    {
      "description": "no columns",
      "input" : [""],
      "expected": [""]
    },
    {
      "description": "no mines",
      "input": [
        "   ",
        "   ",
        "   "
      ],
      "expected": [
        "   ",
        "   ",
        "   "
      ]
    },
    {
      "description": "board with only mines",
      "input": [
        "***",
        "***",
        "***"
      ],
      "expected": [
        "***",
        "***",
        "***"
      ]
    },
    {
      "description": "mine surrounded by spaces",
      "input": [
        "   ",
        " * ",
        "   "
      ],
      "expected": [
        "111",
        "1*1",
        "111"
      ]
    },
    {
      "description": "space surrounded by mines",
      "input": [
        "***",
        "* *",
        "***"
      ],
      "expected": [
        "***",
        "*8*",
        "***"
      ]
    },
    {
      "description": "horizontal line",
      "input": [" * * "],
      "expected": ["1*2*1"]
    },
    {
      "description": "horizontal line, mines at edges",
      "input": ["*   *"],
      "expected": ["*1 1*"]
    },
    {
      "description": "vertical line",
      "input": [
        " ",
        "*",
        " ",
        "*",
        " "
      ],
      "expected": [
        "1",
        "*",
        "2",
        "*",
        "1"
      ]
    },
    {
      "description": "vertical line, mines at edges",
      "input": [
        "*",
        " ",
        " ",
        " ",
        "*"
      ],
      "expected": [
        "*",
        "1",
        " ",
        "1",
        "*"
      ]
    },
    {
      "description": "cross",
      "input": [
        "  *  ",
        "  *  ",
        "*****",
        "  *  ",
        "  *  "
      ],
      "expected": [
        " 2*2 ",
        "25*52",
        "*****",
        "25*52",
        " 2*2 "
      ]
    },
    {
      "description": "large board",
      "input": [
        " *  * ",
        "  *   ",
        "    * ",
        "   * *",
        " *  * ",
        "      "
      ],
      "expected": [
        "1*22*1",
        "12*322",
        " 123*2",
        "112*4*",
        "1*22*2",
        "111111"
      ]
    }
  ]
}