import java.util.*;

public class X {
    public static String[] convertList(Collection<String> list){
        String[] ret = new String[list.size()];
        Iterator<String> it = list.iterator();
        for( int i=0; it.hasNext(); i++ ){
            ret[i] = it.next();
        }
        return ret;
    }

    public static int[] convertList(Collection<Integer> list){
        int[] ret = new int[list.size()];
        Iterator<Integer> it = list.iterator();
        for( int i=0; it.hasNext(); i++ ){
            ret[i] = (it.next()).intValue();
        }
        return ret;
    }
    
    public static void main(String[] args) {
    }
}