How to walk a [closed] arraylist

Question

How to walk a [closed] arraylist

Navigation

#1 by (2 votes)
#2 by (0 votes)

0

How to traverse an arraylist as long as it does not find the element and if at the end this element is not added to the lsita

java arraylist

asked by Elena Quintana 23.03.2018 в 14:46

source

2 answers

Because the java calendar does not work for hours and minutes Use "WHERE" as a subquery with INSERT

score 2 · Answer 1

2

To be able to do it this way, it is not necessary to cross it, you can use the function contains :

if (!myArray.contains(elemento)) { //si tu arraylist no contiene el elemento
   myArray.add(elemento);
}

answered by 23.03.2018 в 14:53

score 0 · Answer 2

There is a method called contains to be able to compare:

Arrays.asList(array).contains(elemento)

the example should look like this:

import java.util.Arrays;

public class MyClass {
    public static void main(String args[]) {

        int [] arr = {1,2,3,4,5,6};
        int comparador = 7;
        if (!Arrays.asList(arr).contains(comparador)){ //validamos si el elemento esta en la lista
            arr[arr.length - 1] = comparador; // Agregamos el elemento
        }
        System.out.println(Arrays.toString(arr));
    }
}