Greater and lesser number

Question

I need to sort three numbers I can’t use for and neither vectors.

I know it’s easy but I can’t do it. My problem is, I can’t keep the highest value.

     public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    int menor = 0;
    int maior = 0;
    System.out.println(" Tres números:");
    int a = sc.nextInt();
    int b = sc.nextInt();
    int c = sc.nextInt();



    if((a < b) && (a < c))
        menor = a;

    else if((b < a)&&(b < c))
        menor = b;

    else if((c < a)&&(c < b))
        menor = c;

    System.out.println(" Maior: " + maior + " Menor:" + menor);
}

Oops I think I got it right.

if((a < b) && (a < c))
        menor = a;

    else if((b < a)&&(b < c))
        menor = b;

    else if((c < a)&&(c < b))
        menor = c;

    if((a > b) && (a > c))
        maior = a;

    else if((b > a)&&(b > c))
        maior = b;

    else if((c > a)&&(c > b))
        maior = c;
    System.out.println(" Maior: " + maior + " Menor:" + menor);
}

Answer 1

A simple way would be this:

import java.util.Scanner;

class Ideone {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println(" Tres números:");
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int menor = a;
        int maior = a;
        if (b > maior) maior = b;
        if (c > maior) maior = c;
        if (b < menor) menor = b;
        if (c < menor) menor = c;
        System.out.println(" Maior: " + maior + " Menor: " + menor);
    }
}

Behold working in the ideone. And in the repl it.. Also put on the Github for future reference.

Obviously there are other ways to do this, but this is simple.

Answer 2

Another option would be:

import java.util.Scanner;

class Ideone {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println(" Tres números:");
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int menor;
        int maior;

        maior = Math.max(b,Math.max(c,a));
        menor = Math.min(b,Math.min(c,a));

        System.out.println(" Maior: " + maior + " Menor: " + menor);
    }
}

The expression below uses the function Math.max to get the highest value between two values. First, compare c with a. Then you compare the result of that with b. In the end, the greatest among these three will be returned.

Math.max(b,Math.max(c,a))

The same is true to get the smallest, however, using the function Math.min.