CODEWITHSUNDEEP
javaarrays
vlad
vlad

Reputation: 159

Extract array elements to separate array

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));

Upvotes: 1

Views: 2008

Answers (2)

Nir Levy
Nir Levy

Reputation: 12953

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];
}

Upvotes: 0

cybersam
cybersam

Reputation: 66989

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;
}

Upvotes: 2

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