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Rilevare la dimensione degli indici di matrice.
//Dichiarazione di un array a 3 dimensioni int[][][] vett=new vett[6][22][4]; //Lunghezza array per la prima dimensione vett.length //Lunghezza array per la seconda dimensione vett[0].length //Lunghezza array per la terza dimensione vett[0][0].length
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Di seguito il caricamento e la stampa di una matrice bidimensionale 5×4
//Matrice di stringhe String str2[][] = new String[5][4];; str2[0][0]= "Linea 0, Colonna 0"; str2[1][0]= "Linea 1, Colonna 0"; str2[2][0]= "Linea 2, Colonna 0"; str2[3][0]= "Linea 3, Colonna 0"; str2[4][0]= "Linea 4, Colonna 0"; str2[0][1]= "Linea 0, Colonna 1"; str2[1][1]= "Linea 1, Colonna 1"; str2[2][1]= "Linea 2, Colonna 1"; str2[3][1]= "Linea 3, Colonna 1"; str2[4][1]= "Linea 4, Colonna 1"; str2[0][2]= "Linea 0, Colonna 2"; str2[1][2]= "Linea 1, Colonna 2"; str2[2][2]= "Linea 2, Colonna 2"; str2[3][2]= "Linea 3, Colonna 2"; str2[4][2]= "Linea 4, Colonna 2"; str2[0][3]= "Linea 0, Colonna 3"; str2[1][3]= "Linea 1, Colonna 3"; str2[2][3]= "Linea 2, Colonna 3"; str2[3][3]= "Linea 3, Colonna 3"; str2[4][3]= "Linea 4, Colonna 3"; for (int i=0;i<str2.length;i++){ for (int j=0;j<str2[0].length;j++){ System.out.print("["+i+","+j+"]='" + str2[i][j] + "' "); } System.out.println(); }
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Con la classe ArrayList si possono gestire array dinamici
//Creazione di un array dinamico di stringhe ArrayList<String> array_1=new ArrayList<String>(); array_1.add("Neque"); array_1.add("porro"); array_1.add("quisquam"); array_1.add("est"); array_1.add("qui"); array_1.add("dolorem"); array_1.add("ipsum"); array_1.add("quia"); array_1.add("dolor"); array_1.add("sit"); array_1.add("amet"); for(int i=0;i < array_1.size();i++) { System.out.print(array_1.get(i)+" "); } System.out.println(""); System.out.println("Dimensione array: " + array_1.size());
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