1
Student
We brought you the popular game "Battleship".
solution.js
Write and export the calcShipsCount() function that takes a square two-dimensional array of zeros and ones as a grid. Zero is an empty cell, one is a part of the ship. The function should return the number of ships on the battlefield.
Since ships should not be adjacent, implement and export the isValidField() function that checks whether the placement of ships is correct.
calcShipsCount([]); // 0
calcShipsCount([
[0, 1, 0, 0, 0, 0],
[0, 1, 0, 1, 1, 1],
[0, 0, 0, 0, 0, 0],
[0, 1, 1, 1, 0, 1],
[0, 0, 0, 0, 0, 1],
[1, 1, 0, 1, 0, 0],
]); // 6
isValidField([
[0, 1, 0, 0],
[1, 0, 0, 1],
[0, 0, 0, 0],
[0, 1, 1, 1],
]); // false
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