Java Utililty Methods Array Deep Copy

int[][] C = new int[M.length][];
for (int i = 0; i < C.length; i++) {
    C[i] = Arrays.copyOf(M[i], M[i].length);
return C;

double[][] copy = original.clone();
for (int i = 0; i < copy.length; i++) {
    copy[i] = copy[i].clone();
return copy;

double[][] copy = new double[original.length][original[0].length];
for (int i = 0; i < copy.length; i++) {
    copy[i] = Arrays.copyOf(original[i], original[i].length);
return copy;

double[][] copy = new double[original.length][original[0].length];
for (int i = 0; i < copy.length; i++) {
    copy[i] = Arrays.copyOf(original[i], original[i].length);
return copy;

double[][] res = ary.clone();
for (int i = 0; i < res.length; ++i)
    res[i] = ary[i].clone();
return res;

int[][] result = new int[source.length][];
for (int i = 0; i < source.length; i++)
    result[i] = source[i].clone();
return result;

if (org == null)
    return null;
byte[] result = new byte[org.length];
System.arraycopy(org, 0, result, 0, org.length);
return result;

double[][] out = new double[in.length][in[0].length];
for (int i = 0; i < in.length; i++)
    for (int j = 0; j < in[0].length; j++) {
        out[i][j] = in[i][j];
return out;

return new String(s);

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