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Okal CR
Asked: 2022-10-21 17:13:29 +0800 CST 2022-10-21 17:13:29 +0800 CST

I need to add to this matrix a method that adds the random numbers that I generate but I don't know how to do it

  • 772

I would just need to add a function that iterates through the array and returns the sum of the numbers housed in the entire array.

It would be very helpful if you could add it because I've been stuck with that one since I really don't know how to do it thank you very much

public class Matriz {

    private int[][] m;

    public Matriz() {
        this.m = new int[10][10];
        this.llenarM();

    }

    public void llenarM() {

        for (int f = 0; f < this.m.length; f++) {
            for (int c = 0; c < this.m.length; c++) {
                this.m[f][c] = (int) (Math.random() * 50 + 1);

            }
        }
    }

    public void mostrarM() {
        for (int f = 0; f < this.m.length; f++) {
            for (int c = 0; c < this.m.length; c++) {
                System.out.print(this.formato(this.m[f][c] + "") + " ");
            }
            System.out.print("\n");
        }
    }

    public String formato(String dato) {

        int tam = dato.length();
        String salida = "";

        if (tam == 1) {
            salida = dato + " ";
        } else {
            salida = dato;
        }
        return salida;

    }
java

1 Answers

  1. Best Answer

    You can even generate it as a property of your class.

    public class Matriz {

    private int[][] m;
    private int suma = 0;
    ...

    And in your method llenaradd it.

    public void llenarM() {

    for (int f = 0; f < this.m.length; f++) {
        for (int c = 0; c < this.m.length; c++) {
             int numero =(int) (Math.random() * 50 + 1);
             this.m[f][c] = numero;
             this.suma += numero;
        }
    }
}

    And in the end you just have to generate the getter

    public int getSuma(){
    return this.suma;
}

    The complete code is

    public class Matriz {

    private int[][] m;
    private int suma = 0;

    public Matriz() {
        this.m = new int[10][10];
        this.llenarM();

    }

    public void llenarM() {

        for (int f = 0; f < this.m.length; f++) {
            for (int c = 0; c < this.m.length; c++) {
                int numero =(int) (Math.random() * 50 + 1);
                this.m[f][c] = numero;
                this.suma += numero;

            }
        }
    }

    public void mostrarM() {
        for (int f = 0; f < this.m.length; f++) {
            for (int c = 0; c < this.m.length; c++) {
                System.out.print(this.formato(this.m[f][c] + "") + " ");
            }
            System.out.print("\n");
        }
    }

    public String formato(String dato) {

        int tam = dato.length();
        String salida = "";

        if (tam == 1) {
            salida = dato + " ";
        } else {
            salida = dato;
        }
        return salida;

    }

    public int getSuma(){
        return this.suma;
    }
}
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