© 2006 Pearson Addison-Wesley. All rights reserved 12.5.1 Arrays of Greater Dimension One-dimensional arrays are linear containers. Multi-dimensional Arrays.

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© 2006 Pearson Addison-Wesley. All rights reserved Arrays of Greater Dimension One-dimensional arrays are linear containers. Multi-dimensional Arrays [0] [1] [2] [0] [0] [1] [2] [3] [1] [2] two-dimensional [0] [0] [1] [2] [3] [4] [1] [2] [3] [2] [1] [0] three-dimensional

© 2006 Pearson Addison-Wesley. All rights reserved Initializing Multi-dimensional Arrays [0] [0] [1] [2] [3] [1] [2] [0] [0] [1] [2] [3] [4] [1] [2] [3] [2] [1] [0] [0] [1] [2] declarationinstantiation Oval[] circles;circles = ; double[][] table;table = int[][][] arr;arr =

© 2006 Pearson Addison-Wesley. All rights reserved double[][] distance = new double[10][15]; int[][][] cube = new int[8][8][10]; How many cells in each of the following? String[][][][][] words = new String[5][4][5][12][6];

© 2006 Pearson Addison-Wesley. All rights reserved Creating Multi-dimensional Arrays The initialization notation for 1D arrays can be extended. char[][] words = { {'c', 'i', 'p', 'h', 'e', 'r'}, {'h', 'i', 'c', 'c’, 'u', 'p'}, {'a', 'p', 'i', 't', 'c', 'h'} }; [0] [0] [1] [2] [3] [4] [5] [1] [2] How would you duplicate this behavior without the initialization notation? Exercise

© 2006 Pearson Addison-Wesley. All rights reserved Processing Multi-dimensional Arrays The key to processing all cells of a multi-dimensional array is nested loops. [0] [1] [2] [3] [0] [1] [2] [3] [4] for (int row=0; row!=5; row++) { for (int col=0; col!=4; col++) { System.out.println( myArray[row][col] ); } for (int col=0; col!=4; col++) { for (int row=0; row!=5; row++) { System.out.println( myArray[row][col] ); } 1) Write a method to initialize this array with the given values. 2) Write a method to interchange two columns, indexed by two int parameters. Exercises

© 2006 Pearson Addison-Wesley. All rights reserved Tables private final int[] mileage = {{0, 722, 2244, 800, 896}, {722, 0, 1047, 2113, 831}, {2244, 1047, 0, 1425, 1576}, {800, 2113, 1425, 0, 2849, {896, 831, 1576, 2849, 0} }; private final int atlanta = 0; private final int chicago = 1; private final int dallas = 2; private final int losAngelas = 3; private final int newYork = 4;