Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.math.BigInteger;

public class Main {
    public static byte[] concatenate(byte[] a, byte[] b) {
        if (a != null && b != null) {
            byte[] rv = new byte[a.length + b.length];

            System.arraycopy(a, 0, rv, 0, a.length);
            System.arraycopy(b, 0, rv, a.length, b.length);

            return rv;
        } else if (b != null) {
            return clone(b);
        } else {
            return clone(a);
        }
    }

    public static byte[] concatenate(byte[] a, byte[] b, byte[] c) {
        if (a != null && b != null && c != null) {
            byte[] rv = new byte[a.length + b.length + c.length];

            System.arraycopy(a, 0, rv, 0, a.length);
            System.arraycopy(b, 0, rv, a.length, b.length);
            System.arraycopy(c, 0, rv, a.length + b.length, c.length);

            return rv;
        } else if (b == null) {
            return concatenate(a, c);
        } else {
            return concatenate(a, b);
        }
    }

    public static byte[] concatenate(byte[] a, byte[] b, byte[] c, byte[] d) {
        if (a != null && b != null && c != null && d != null) {
            byte[] rv = new byte[a.length + b.length + c.length + d.length];

            System.arraycopy(a, 0, rv, 0, a.length);
            System.arraycopy(b, 0, rv, a.length, b.length);
            System.arraycopy(c, 0, rv, a.length + b.length, c.length);
            System.arraycopy(d, 0, rv, a.length + b.length + c.length, d.length);

            return rv;
        } else if (d == null) {
            return concatenate(a, b, c);
        } else if (c == null) {
            return concatenate(a, b, d);
        } else if (b == null) {
            return concatenate(a, c, d);
        } else {
            return concatenate(b, c, d);
        }
    }

    public static byte[] clone(byte[] data) {
        if (data == null) {
            return null;
        }
        byte[] copy = new byte[data.length];

        System.arraycopy(data, 0, copy, 0, data.length);

        return copy;
    }

    public static byte[][] clone(byte[][] data) {
        if (data == null) {
            return null;
        }

        byte[][] copy = new byte[data.length][];

        for (int i = 0; i != copy.length; i++) {
            copy[i] = clone(data[i]);
        }

        return copy;
    }

    public static byte[][][] clone(byte[][][] data) {
        if (data == null) {
            return null;
        }

        byte[][][] copy = new byte[data.length][][];

        for (int i = 0; i != copy.length; i++) {
            copy[i] = clone(data[i]);
        }

        return copy;
    }

    public static int[] clone(int[] data) {
        if (data == null) {
            return null;
        }
        int[] copy = new int[data.length];

        System.arraycopy(data, 0, copy, 0, data.length);

        return copy;
    }

    public static short[] clone(short[] data) {
        if (data == null) {
            return null;
        }
        short[] copy = new short[data.length];

        System.arraycopy(data, 0, copy, 0, data.length);

        return copy;
    }

    public static BigInteger[] clone(BigInteger[] data) {
        if (data == null) {
            return null;
        }
        BigInteger[] copy = new BigInteger[data.length];

        System.arraycopy(data, 0, copy, 0, data.length);

        return copy;
    }
}