# Two-Dimensional Arrays Chapter 11. 11 What is a two-dimensional array? A two-dimensional array has “rows” and “columns,” and can be thought of as a series.

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Two-Dimensional Arrays Chapter 11

11 What is a two-dimensional array? A two-dimensional array has “rows” and “columns,” and can be thought of as a series of one-dimensional arrays stacked on top of one another.

11 Declare a two-dimensional array: int[][] anArray = new int[5][5]; Declaring a Two-Dimensional Array

11 Iterating a Two-Dimensional Array Use a nested for loop: Outer loop iterates the row Inner loop iterates the column. for ( int i=0; i<5; i++ ) { for ( int j=0; j<5; j++ ) { anArray[i][j] = i+j; } }

11 Multidimensional Arrays Arrays can have more than two dimensions. Multidimensional arrays are not commonly used as they quickly become difficult to manage. Declare multidimensional array: int[][][] anArray = new int[5][5][5];

11 Implementing Cellular Automata One generation per row One-dimensional array holds on/off status of each cell in each generation

11 The Game of Life Using two-dimensional arrays: Entire board is one generation. Two-dimensional array holds state of each cell of the game board organized in rows and columns.

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