Add String to beginning of String array

Question

Is it possible to add a string to beginning of String array without iterating the entire array.

Answer 1

try

    String[] a = {"1", "2"};
    String[] a2 = new String[a.length + 1];
    a2[0] = "0";
    System.arraycopy(a, 0, a2, 1, a.length);

Answer 2

You cant...You have to move all the strings coming after it forward to accommodate the new string. If you are directly adding it to 0th index, you will lose the previous element there

Answer 3

You can do some thing like below

public class Test {

public static String[] addFirst(String s[], String e) {
    String[] temp = new String[s.length + 1];
    temp[0] = e;
    System.arraycopy(s, 0, temp, 1, s.length);
    return temp;
}

public static void main(String[] args) {
    String[] s = { "b", "c" };
    s = addFirst(s, "a");
    System.out.println(Arrays.toString(s));
}
}