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Engineering · Computer Science
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In a game of Battleship, after a ship has been placed on the ocean (10 x 10 grid), shadows are placed in the spaces adjacent to the ship. This means that other ships cannot be placed in those shadow spaces. 'isOccupied' will return true if a location contains a ship. Is it possible to add some comments, line by line, of what happens in this block of code please? I cannot work it out and fear that I am overcomplicating things.

public void setShadow() {
       for (int i = 0; i < 10 ; i++){
           for (int j = 0; j < 10; j++) {
               if (this.isOccupied(i,j)) {
                   for (int k = -1; k < 2; k++) {
                       for (int m = -1; m < 2; m++ ) {
                           if ((i + k >= 0) && (i + k <= 9) && (j + m >= 0) && (j + m <= 9)) {
                               shadow[i + k][ j+ m] = true;
                           }
                       }
                   }
               }
           }
       }
   }

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