public static int[] remove(int[] a, int i) {
int[] tmp = Arrays.copyOf(a,a.length-1);
System.arraycopy(a,i+1,tmp,i,tmp.length-i);
return tmp;
}
public static <T> T[] append(T[] a, T... b) {
if( a==null ) return b;
T[] tmp = Arrays.copyOf(a,a.length+b.length);
System.arraycopy(b,0,tmp,a.length,b.length);
return tmp;
}
public static int[] append(int[] a, int[] b) {
int[] res = new int[a.length + b.length];
System.arraycopy(a, 0, res, 0, a.length);
System.arraycopy(b, 0, res, a.length, b.length);
return res;
}
public static String[] append(String[] a, String[] b) {
String[] res = new String[a.length + b.length];
System.arraycopy(a, 0, res, 0, a.length);
System.arraycopy(b, 0, res, a.length, b.length);
return res;
}
public static double[][] append(double[][] a, double[][] b) {
double[][] res = new double[a.length + b.length][];
System.arraycopy(a, 0, res, 0, a.length);
System.arraycopy(b, 0, res, a.length, b.length);
return res;
}