Beginner Why does a variable result in 0?

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Beginner Why does a variable result in 0?

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#1 by (1 votes)

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I'm trying to solve this exercise to see if you can help me ...

Encode a Java program that reads the temperatures for the month of January and calculate and display:

Average temperature

The lowest temperature

How many days have had temperatures above the average

My problem is as follows. When I try to get the lowest temperature, I always get 0 and I do not know why. I should get the lowest value. Thanks for the help in advance ...

public class ejercicio {

    static Scanner leer = new Scanner(System.in);

    public static void main(String[] args) {
        int cont=0;
        double mediaTemperatura = 0;
        int Array[] = new int[5];
        int baja = Array[0];



        for (int i = 0; i < Array.length; i++) {
            int dia=i;
            System.out.println("Dime la temperatura del dia " + dia);
            Array[i] = leer.nextInt();
            mediaTemperatura += Array[i];
            if (Array[i] < baja) {
                baja = Array[i];
            }
        }
        mediaTemperatura = mediaTemperatura / Array.length;

        for (int i = 0; i < Array.length; i++) {
            if (Array[i]>mediaTemperatura){
                cont++;
            }
        }
        System.out.println("La temperatura media es " + mediaTemperatura);
        System.out.println("La temperatura mas baja es:" +baja);
        System.out.println("Hay " + cont + " dias con temperatura mayor a la media");
    }
}

java

asked by Airsa97 28.11.2018 в 22:58

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1 answer

Error with Volley: Attempt to invoke virtual method 'com.android.volley.Request How do I get a Select with PDO in Php correctly

score 1 · Answer 1

The first time you are assigning to baja the value% co_of% that is actually 0, therefore if you write a value greater than zero, value will never be assigned to Array[0] :

if (Array[i] < baja) { //baja tiene el valor de 0.
    baja = Array[i];
}

Change the initialization value of baja :

int cont=0;
double mediaTemperatura = 0;
int Array[] = new int[5];
//Inicializa con un valor que no sea cero y sea mayor a la max temperatura.
int baja = 100; //Array[0];

for (int i = 0; i < Array.length; i++) {
    int dia=i;
    System.out.println("Dime la temperatura del dia " + dia);
    Array[i] = leer.nextInt();
    mediaTemperatura += Array[i];

    if (Array[i] < baja) {
        baja = Array[i];
    }
}
mediaTemperatura = mediaTemperatura / Array.length;

for (int i = 0; i < Array.length; i++) {
    if (Array[i]>mediaTemperatura){
        cont++;
    }
}
System.out.println("La temperatura media es " + mediaTemperatura);
System.out.println("La temperatura mas baja es:" +baja);
System.out.println("Hay " + cont + " dias con temperatura mayor a la media");