public static void main(String[] args){

    //A)
    int[] f = {10,2,4,5,4,3,8,9,2,3};
    System.out.println (f[6]);

    //B)
    float g[];
    g = new float [10];
    g[5]= 5;

    //C)
    int arregloEnteros[];
    arregloEnteros = new int [1001];
    for (int i = 0; 1 <=1000; i++){
        arregloEnteros [i] = 1;
    }
    //D)
    int[] arregloA = new int[10];
    int[] arregloB= new int[20];
    for (int j = 2; j < arregloA.length; j++){
        arregloB[j]=arregloA[j-2];
    }

    //E)
    int[][] matriz = new int[3][3];
    matriz[0][0] = 1;
    matriz[0][2] = 3;
    matriz[0][1] = 2;
    matriz[1][0] = 4;
    matriz[1][1] = 5;
    matriz[1][2] = 6;
    matriz[2][0] = 7;
    matriz[2][1] = 8;
    matriz[2][2] = 9;
}