// array of arrays // row major vs col major public class aoa4 { public static void main(String[] args) { //--------------------------------------------------------------------- // Want to store the following matrix/table/2-D array: // 1 2 3 // 4 5 6 //--------------------------------------------------------------------- //--------------------------------------------------------------------- // Row major: // A = [row 0] = [1 2 3] // [row 1] [4 5 6] //--------------------------------------------------------------------- int[][] A = new int[2][3]; // 2 rows, 3 cols A[0][0]=1; A[0][1]=2; A[0][2]=3; // 1st row A[1][0]=4; A[1][1]=5; A[1][2]=6; // 2nd row print_rm("Row Major",A); // print matrix //--------------------------------------------------------------------- // Alternative with initializer lists: // int A[][] = { {1,2,3}, {4,5,6} }; //--------------------------------------------------------------------- //--------------------------------------------------------------------- // Col major: // B = [col0 col1 col2] // = [1] [2] [3] // [4] [5] [6] //--------------------------------------------------------------------- int[][] B = new int[3][2]; // 3 cols, 2 rows B[0][0]=1; B[1][0]=2; B[2][0]=3; // first "row" B[0][1]=4; B[1][1]=5; B[2][1]=6; // second "row" print_cm("Col Major",B); // print matrix //--------------------------------------------------------------------- // Alternative with initializer lists: // int[][] B = { {1,4}, {2,5}, {3,6} }; //--------------------------------------------------------------------- } // method main public static void print_rm(String s, int[][] x) { System.out.println(s); for (int i=0; i