This is a part of the game of life Using python 27x In order

In order to get used to looping over 2d arrays of data, copy this function named diagonalize(A) into your file: def diagonalize(width, height): creates an empty board and then modifies it so that it has a diagonal strip of \"on\" cells. A = createBoard(width, height) for row in range(height): for col in range(width): if row == col: A(row)(col) = 1 else: A[row][col] = 0 return A This function, diagonalize takes in a desired width and height. It then creates an array A and sets A\'s data so that it is an array whose cells are empty except for the diagonal where row col. Try displaying the result with >>> A = diagonalize(7, 6) >>> A [[1, 0, 0, 0, 0, 0, 0], [0, 1, 0, 0, 0, 0, 0], [0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 1, 0, 0, 0], [0, 0, 0, 0, 1, 0, 0], [0, 0, 0, 0, 0, 1, 0]] >>> printBoard(A) 1000000 0100000 0010000 0001000 0000100 0000010 Take a moment to note the direction the diagonal is running that indicates which way the rows of the board are being displayed: top-to-bottom, in this case. Also, this example shows that the height and width do not have to be the same -- though it\'s certainly ok if they are. innerCells(w, h) Based on the example of diagonalize, write a variation named innerCells (w, h) which returns a 2d array of all live cells - with the value of I - except for a one-cell-wide border of empty cells (with the value of 0) around the edge of the 2d array. For example, you might try >>> A = innerCells(5, 5) >>> printBoard(A) 00000 01110 01110 01110 00000

Solution

def innerCells( w, h ):
   A = [];
   for i in range(h):
       B = [];
       for j in range(w):
           if( i==0 or i==h-1 ):
               B.append(0);
           elif( j==0 or j==w-1 ):
               B.append(0);
           else:
               B.append(1);
       A.append( B );
   return A;

def printBoard(A):
   for i in range(len(A)):
       string = \'\';
       for j in range(len(A[0])):
           string = string + str(A[i][j]);
       print string;

A = innerCells(5,5);
printBoard(A);