Statistics

Problem Statement for "BattleshipChecker"

Problem Statement

Battleship is a game in which two players try to sink each other's ships. Each player has a 10x10 square grid on which he must place 10 ships. Each ship consists of between 1 and 4 cells arranged in a straight line. Ships must be placed parallel to the sides of the board, and no two ships can share a cell or touch each other. Touching is defined as occupying cells that share a vertex. Each player must place the following ships on his board: 4 ships of length 1, 3 of length 2, 2 of length 3, and 1 of length 4.

The effectiveness of a player's board is defined as the number of rows that contain no ships plus the number of columns that contain no ships. You will be given a String[] board, where each element represents one row of a player's board. If the board does not follow the above rules, return "REJECTED". If it does, return "ACCEPTED, X POINTS", where X is the effectiveness of the board, with no extra leading zeros.

Definition

Class:
BattleshipChecker
Method:
checkBoard
Parameters:
String[]
Returns:
String
Method signature:
String checkBoard(String[] board)
(be sure your method is public)

Notes

  • The return value for an accepted board with a non-plural effectiveness must still end with "POINTS" (not "POINT").

Constraints

  • board will contain exactly 10 elements.
  • Each element of board will contain exactly 10 characters.
  • Each character of each element of board will be either '.' or 'X'.

Examples

  1. {"......X...", ".XXX..X...", "......X...", "X.X...X...", "X.........", "...XX.X...", "......X...", ".XX...X...", "..........", ".X.X..X..."}

    Returns: "ACCEPTED, 5 POINTS"

    This one is correct, and has 4 free columns and 1 free row, for a total of 5 points.

  2. {"X.X.X.X...", "......X...", ".XX...X...", "......X...", "......X..X", "...X..X...", "...X..X...", "......X...", "..XX..X...", "......X..."}

    Returns: "REJECTED"

    It is unacceptable to have a ship of size 1x10.

  3. {".....XX...", ".XX.......", "..........", ".X....XXX.", ".X........", ".....X....", "..X..X....", ".....X....", "...X......", "X.....XXXX"}

    Returns: "REJECTED"

    One 1x1 ship is missing.

  4. {".....XX..X", ".XX......X", "..........", ".X....XXX.", ".X........", ".....X..X.", "..X..X....", ".....X....", "...X......", "X.....XXXX"}

    Returns: "REJECTED"

    There is one extra 1x2 ship.

  5. {".....XX..X", ".XX......X", "..........", "......XXX.", "..........", ".....X..X.", "..X..X....", ".....X....", "...X......", "X.....XXXX"}

    Returns: "ACCEPTED, 3 POINTS"

  6. {"X.......X.", "...XXXX...", ".X......X.", "....XX....", ".........X", ".........X", ".....XXX..", ".........X", "..X......X", "..X......X"}

    Returns: "ACCEPTED, 0 POINTS"

    This is a valid configuration even though it is not very effective.

  7. {"X.......X.", "...XXXX...", ".X......X.", "....XX....", "...X.....X", "...X.....X", ".....XXX..", ".........X", ".........X", ".........X"}

    Returns: "REJECTED"

    Diagonal touching is not allowed.

  8. {"..........", "..........", "..........", "..........", "..........", "..........", "..........", "..........", "..........", ".........."}

    Returns: "REJECTED"

  9. {"X........X", "..........", "..........", "..........", "..........", "..........", "..........", "..........", "..........", "X........X"}

    Returns: "REJECTED"

  10. {"XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX"}

    Returns: "REJECTED"

  11. {".XXXXXXXX.", "XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX", "XXXX.XXXXX", "XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX", "XXXXXXXXXX", ".XXXXXXXX."}

    Returns: "REJECTED"

  12. {"....XXX..X", "XXXXX.XXXX", "XXXXXXXXXX", "XX.XX.XXXX", "XX.XXXX...", "XX.XX.XXXX", "XXXXXXXXXX", "XXXXX.XXXX", "XXXXXXXXXX", "X..XXX..XX"}

    Returns: "REJECTED"

  13. {"XXXX...XXX", "..........", "....XXX...", ".XX.......", ".....X....", ".......XX.", "..X.......", "....XX....", ".......X..", ".....X...."}

    Returns: "ACCEPTED, 1 POINTS"

  14. {"XXXX...XXX", "..........", "....XXX...", ".XX.......", ".....X....", ".......XX.", "...X......", "....XX....", ".......X..", ".....X...."}

    Returns: "REJECTED"

  15. {"XXXX...XXX", "..........", "....XXX...", ".XX.......", ".....X....", ".......XX.", "..........", "...XXX....", ".......X..", ".....X...."}

    Returns: "REJECTED"

  16. {"XXXX...XXX", "..........", "....XXX...", ".XX.......", ".....X....", ".XX....XX.", "..........", "...XXX....", ".X.....X..", ".....X...."}

    Returns: "REJECTED"

  17. {"XXXX......", "..........", ".......X..", ".XX.......", ".....X....", ".XX....XX.", "..........", "...XXX....", ".......X..", ".....X...."}

    Returns: "REJECTED"

  18. {"...X.X.X.X", "...X.X....", "...X...X.X", "...X.X....", ".....X....", "...X......", "...X.X....", "...X.X....", "..........", "...XXX...."}

    Returns: "ACCEPTED, 6 POINTS"

  19. {"..XXXX....", "..........", "......X..X", "......X...", "..XX......", "......XXX.", "...XX.....", ".........X", ".X...X...X", "....X....X"}

    Returns: "REJECTED"

  20. {"..XXXX....", "..........", "......X..X", "......X.X.", "..XX......", "......XXX.", "...XX.....", ".........X", ".X...X...X", ".........X"}

    Returns: "REJECTED"

  21. {"..XXXX....", "..........", "......X..X", "......X...", "..XX......", "......XXX.", "...XX.....", ".........X", ".X...X...X", "..X......X"}

    Returns: "REJECTED"

  22. {"..........", "..X...X...", "..........", ".X.XXXX.X.", "........X.", ".X.XXX....", "........X.", ".XXX.XX.X.", "..........", ".........."}

    Returns: "ACCEPTED, 7 POINTS"

  23. {"XXXX..X..X", "..........", "X........X", ".........X", "X........X", "X.........", "..........", "X........X", ".........X", "XXX..XX..."}

    Returns: "ACCEPTED, 5 POINTS"

  24. {"XXXX..X..X", "..........", "X........X", ".........X", "X........X", "X.........", ".X........", "X........X", ".........X", "XXX..XX..."}

    Returns: "REJECTED"

  25. {"XXXX..X...", ".....X....", "X........X", ".........X", "X........X", "X.........", "..........", "X........X", ".........X", "XXX..XX..."}

    Returns: "REJECTED"

  26. {"XXXX..X..X", "..........", ".........X", ".........X", "X........X", "X.........", "........X.", "X........X", ".........X", "XXX..XX..."}

    Returns: "REJECTED"

  27. {"X....XX...", "...X......", "........X.", ".X..X.....", ".X..X...XX", ".X..X.....", "....X...XX", "..........", ".X......XX", "...XXX...."}

    Returns: "REJECTED"

  28. {"X.....X...", "...X......", "........X.", ".X..X.....", ".X..X...XX", ".X..X.....", "....X...XX", "..........", ".X......XX", "...XXX...."}

    Returns: "REJECTED"

  29. {"X.........", "...X......", "........X.", ".X..X.....", ".X..X..X..", ".X..X..X..", "....X...XX", "..........", ".X......XX", "...XXX...."}

    Returns: "REJECTED"

  30. {"X.........", "...X......", "........XX", ".X..X.....", ".X..X..X..", ".X..X..X..", ".........X", "..........", ".X......XX", "..XXXX...."}

    Returns: "REJECTED"

  31. {"X.........", "...X......", "........XX", ".X..X.....", ".X..X..X..", ".X..X..X..", ".........X", "..........", "X.......XX", "..XXXX...."}

    Returns: "ACCEPTED, 2 POINTS"

  32. {"X.........", ".X........", "........XX", ".X..X.....", ".X..X..X..", ".X..X..X..", ".........X", "..........", "X.......XX", "..XXXX...."}

    Returns: "REJECTED"

  33. {"X.........", "..........", "........XX", ".X..X.....", ".X..X..X..", ".X..X..X..", ".........X", "X.........", "X.......X.", "..XXXX...X"}

    Returns: "REJECTED"

  34. {".........X", ".X......X.", ".X....X...", "......X...", ".XXX..X...", "......X...", ".X......X.", "....XX..X.", "..X.......", ".......XXX"}

    Returns: "REJECTED"

  35. {"....X....X", ".X......X.", ".X....X...", "......X...", ".XXX..X...", "......X...", ".X......X.", "....XX....", "..X.......", ".......XXX"}

    Returns: "REJECTED"

  36. {"....X....X", ".X........", ".X....X...", "......X...", ".XXX..X...", "......X...", "........X.", "....XX..X.", "..........", "X......XXX"}

    Returns: "REJECTED"

  37. {"....X....X", ".X........", ".X....X...", "......X...", ".XXX..X...", "......X...", "........X.", ".X..XX..X.", "..........", "X......XXX"}

    Returns: "ACCEPTED, 1 POINTS"

  38. {"...X......", "X..X......", "...X......", "X..X......", ".....XXX..", "X.........", "....X.....", "X...X.....", "..........", ".XXX.XX.XX"}

    Returns: "ACCEPTED, 1 POINTS"

  39. {"...X......", "X..X......", "...X......", "X..X......", "...XXX....", "X.........", "....X.....", "X...X.....", "..........", ".XXX.XX.XX"}

    Returns: "REJECTED"

  40. {"...X......", "X..X......", "...X......", "X..X......", "....XXX...", "X.........", "....X.....", "X...X.....", "..........", ".XXX.XX.XX"}

    Returns: "REJECTED"

  41. {"...X......", "X..X......", "...X......", "X..XXX....", "..........", "X.........", "....X.....", "X...X.....", "..........", ".XXX.XX.XX"}

    Returns: "REJECTED"

  42. {"XXXXXXXXXX", "..........", "..........", "..........", "..........", "..........", "..........", "..........", "..........", "XXXXXXXXXX"}

    Returns: "REJECTED"

  43. {"XXXXXXXXXX", "X........X", "X........X", "X........X", "X........X", "X........X", "X........X", "X........X", "X........X", "XXXXXXXXXX"}

    Returns: "REJECTED"

  44. {"..........", "..........", "...XXXXXX.", "...X....X.", "...X....X.", "...X....X.", "...X....X.", "...XXXXXX.", "..........", ".........."}

    Returns: "REJECTED"

  45. {"XXXX.X....", "..........", "XXX.XX....", "..........", "XXX.XX....", "..........", "X.XX.X....", "..........", "..........", ".........."}

    Returns: "REJECTED"

  46. {"XXXX.X.X..", "..........", "XXX..XX...", "..........", "XXX..XX...", "..........", "XX.X.X....", "..........", "..........", ".........."}

    Returns: "ACCEPTED, 9 POINTS"

  47. {"X..XX...X.", "........X.", "..XX....X.", "..........", "...XXXX...", "........X.", ".X........", "......X..X", "XXX...X...", ".........."}

    Returns: "ACCEPTED, 3 POINTS"

  48. {"X.......X.", "........X.", "..XX....X.", "..........", "...XXXX...", "........X.", ".X........", "......X..X", "XXX...X...", ".........."}

    Returns: "REJECTED"

  49. {"X..XX...X.", "........X.", "..XX....X.", "..........", "...XXXX...", "........X.", ".X........", "......X..X", "XXX...X...", "........XX"}

    Returns: "REJECTED"

  50. {"...XX...X.", "........X.", "..XX....X.", "..........", "...XXXX...", "........X.", ".X........", "......X..X", "XXX...X...", ".........."}

    Returns: "REJECTED"

  51. {"X..XX...X.", "........X.", "..XX....X.", "..........", "...XXXX...", "........X.", ".X........", "......X..X", "XXX...X...", "....X....."}

    Returns: "REJECTED"

  52. {"X..XX...X.", "........X.", "..XX....X.", "..........", "...XXXX...", "........X.", ".X........", "......X..X", "......X...", ".........."}

    Returns: "REJECTED"

  53. {"X..XX...X.", "........X.", "X.XX....X.", "X.........", "X..XXXX...", "........X.", ".X........", "......X..X", "XXX...X...", ".........."}

    Returns: "REJECTED"

  54. {"X..XX...X.", "........X.", "..XX....X.", "..........", "..........", "........X.", ".X........", "......X..X", "XXX...X...", ".........."}

    Returns: "REJECTED"

  55. {"X..XX...X.", "........X.", "X.XX....X.", "X.........", "X..XXXX...", "X.......X.", "..X.......", "......X..X", "XXX...X...", ".........."}

    Returns: "REJECTED"

  56. {"X..XX...X.", "........X.", "..XX....X.", "..........", "..XX.XX...", "........X.", ".X........", "......X..X", "XXX...X...", ".........."}

    Returns: "REJECTED"

  57. {"X........X", "...XXX....", "X........X", ".........X", "X..XXXX...", "..........", "..XXX.....", "........X.", "........X.", ".....XX..."}

    Returns: "ACCEPTED, 3 POINTS"

  58. {"X........X", "...XXX....", "X........X", ".........X", "X..XXXX...", "..........", "..XX.X....", "........X.", "........X.", ".....XX..."}

    Returns: "REJECTED"

  59. {"X........X", "...XXX....", "X........X", ".........X", "X..XXXX...", "..........", "..XXX...X.", "..........", "........X.", ".....XX..."}

    Returns: "REJECTED"

  60. {"X........X", "...XXX....", "X........X", ".........X", "X..XXXX...", "..........", "..XXX.....", ".......X..", "........X.", ".....XX..."}

    Returns: "REJECTED"

  61. {"...XXXX...", "........X.", "..X.XX....", "..X....X..", "....XX....", "..X.......", "....XXX...", "..........", "...XXX.X..", ".........."}

    Returns: "ACCEPTED, 5 POINTS"

  62. {"...XXXX...", "........X.", "..X.XX....", "..X.......", "....XX....", "..X.......", "....XXX...", "..........", "...XXX.X..", "........X."}

    Returns: "REJECTED"

  63. {"...XXXX...", ".......X..", "..X.XX....", "..X....X..", "....XX....", "..X.......", "....XXX...", "..........", "...XXX.X..", ".........."}

    Returns: "REJECTED"

  64. {"...XXX....", ".X......X.", ".X..X.....", ".X..X...XX", "....X.....", "....X.....", "..........", "..XX..XX..", ".........X", "....X.X..."}

    Returns: "ACCEPTED, 2 POINTS"

  65. {"...XXX....", ".X......X.", ".X..X.....", ".X..X...XX", "....X.....", "X...X.....", "X.........", "X.XX..XX..", "X........X", "X...X.X..."}

    Returns: "REJECTED"

  66. {"...XXX....", ".X......X.", ".X..X.....", ".X..X...XX", "....X.....", "....X.....", "....X.....", ".XX...XX..", "..........", "....X.X..."}

    Returns: "REJECTED"

  67. {"...XXX....", ".X......X.", ".X..X.....", ".X..X...XX", "....X.....", "....X.....", "....X.....", ".XX...XX..", "..........", ".X..X.X..."}

    Returns: "REJECTED"

  68. {"...XXX....", ".X......X.", ".X........", ".X..X...XX", "....X.....", "....X.....", "....X.....", ".XX...XX..", "..........", "X...X.X..."}

    Returns: "ACCEPTED, 1 POINTS"

  69. {"X..X..X..X", "..........", "XX..XX..XX", "..........", "XX..XX....", "X...X.....", "..........", "XX........", "XX........", ".........." }

    Returns: "REJECTED"

  70. {"......X..X", ".XXX..X..X", "......X..X", "X.X...X..X", "X........X", "...XX.X...", "......X...", ".XX...X...", "..........", ".X.X..X..." }

    Returns: "REJECTED"

  71. {"X..XXXX.X.", "..........", ".X......X.", "....XX....", ".........X", ".........X", ".....XXX..", ".........X", "..X......X", "..X......X" }

    Returns: "ACCEPTED, 1 POINTS"

  72. {"X.X.X.X.XX", "..........", "XX.XX..XXX", "..........", "XXXX...XXX", "..........", ".....XXXXX", "..........", "..........", ".........." }

    Returns: "REJECTED"

  73. {"XXXX......", "..........", "X.X.X.X.XX", "..........", "XX.XXX.XXX", "..........", "........XX", "..........", "..........", ".........." }

    Returns: "ACCEPTED, 6 POINTS"

  74. {"..........", ".XXX..X...", "......X...", "X.X...X...", "X.........", "..XXX.X...", "......X...", ".XX...X...", "..........", ".X.X..X..." }

    Returns: "REJECTED"

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