.

sorry my bad!

The java version returns the input room as char[][] instead of an int[] at the end of the cockroaches- method.

That is very strange. Where exactly are you seeing that?

The Java initial solution is clearly returning int[]

public class Dinglemouse {

  public static int[] cockroaches(final char[][] room) {
    // Your code here!
    return new int[10];
  }
  
}

The java version returns the input room as char[][] instead of an int[] at the end of the cockroaches- method.

Please say what language has char[][] as return type?

I am very confused - the function should return an int[] but the signature has char[][] as return type. Any suggestions?