How can I calculate the number of ships in the battleship game-CodePudding

Need to calculate the number of ships. Ships are presented as a “battleship” game.

“1” represents a ship, “0” represents water. C#

namespace Ships
 {
 class Program
  {
  static int[,] ships = new int[10, 10] {
      { 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, },
      { 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, },
      { 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, },
      { 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, },
      { 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, },
      { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
      { 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, },
      { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
      { 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, },
      { 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, }
  };

  static void Main(string[] args)
  {
     int count = 0;

     // code write here
    
     Console.WriteLine(count);

     Console.ReadLine();
  }
 }
}

CodePudding user response：

Based on the rewritten question and clarification in your comment..

int count = ships.Cast<int>().Count(x => x == 1);

This will count the number of 1's in your 2D array (i.e. 20, in your example). Sum() would be slightly simpler, but I think Count is a little more self-documenting in this use case, and is simpler to change if you decide to use a value other than 1.

For a non-LINQ approach, you'd do something like:

int count = 0;
for (int i = 0; i < ships.GetLength(0); i  )
{
    for (int j = 0; j < ships.GetLength(1); j  )
    {
        if (ships[i, j] == 1)
            count  ;

        //Could also just do:
        //count  = ships[i, j];
        //Since you're only working with 1 and 0
    }
}

CodePudding user response：

Not possible: imagine you have this:

1 1 1
1 1 1

Are these two of length 3 or three of length 2?

You need to clarify your problem.

CodePudding user response：

given the new question this should be enough for you:

int count = ships.Cast<int>().Sum();

with a simple search through the internet you would have easily found this though