Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    /**
     * Concatenate two byte arrays. No null checks are performed.
     *
     * @param x1 the first array
     * @param x2 the second array
     * @return (x2||x1) (little-endian order, i.e. x1 is at lower memory
     *         addresses)
     */
    public static byte[] concatenate(byte[] x1, byte[] x2) {
        byte[] result = new byte[x1.length + x2.length];

        System.arraycopy(x1, 0, result, 0, x1.length);
        System.arraycopy(x2, 0, result, x1.length, x2.length);

        return result;
    }

    /**
     * Convert a 2-dimensional byte array into a 1-dimensional byte array by
     * concatenating all entries.
     *
     * @param array a 2-dimensional byte array
     * @return the concatenated input array
     */
    public static byte[] concatenate(byte[][] array) {
        int rowLength = array[0].length;
        byte[] result = new byte[array.length * rowLength];
        int index = 0;
        for (int i = 0; i < array.length; i++) {
            System.arraycopy(array[i], 0, result, index, rowLength);
            index += rowLength;
        }
        return result;
    }
}