Extract array elements to separate array

Question

I have to make a program that extract every 3th element from array. So far i have made the basic array, but im stuck at extracting every 3th element into separate array. How can i do that?

    public static void main(String[] args) {
    int min = -100;
    int max = 100;

    int[] array = new int[201];
for( int i = 0; i < array.length; i++) {

    array[i] = min + (int)(Math.random()*((max - min) + 1));

With a for loop you can iterate through an array with whatever step you want. For instance for (int i = 0; i < array.length; i+=3) — khelwood
– khelwood, Commented Dec 10, 2015 at 21:19

cybersam · Accepted Answer · 2015-12-10 21:19:55Z

2

To fill in a new array (named array2) with every 3rd item from your array:

int[] array2 = new int[array.length / 3];
int k = 2;
for(int j = 0; j < array2.length; j++) {
    array2[j] = array[k];
    k += 3;
}

answered Dec 10, 2015 at 21:19

cybersam

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Comments

Nir Levy · Accepted Answer · 2015-12-10 21:23:35Z

0

just make your for loop jump by three:

int[] newArray = new int[array.length / 3];
for (int i = 2 ; i < array.length ; i+=3) {
  newArray[i/3] = array[i];
}

answered Dec 10, 2015 at 21:23

Nir Levy

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