Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    public static boolean getNext(int index, byte[] data) {
        return ((data[getBytePos(index)] >> getBitPos(index)) & 1) == 1;
    }

    public static long getNext(int index, byte[] data, final int offset) {
        long result = 0;
        for (int lengthRemain = offset, start = getBitPos(index); lengthRemain != 0; start = 0) {
            int end = Math.min(lengthRemain + start - 1, 5);
            int length = end - start + 1;
            for (int i = 0; i < length; i++, index++)
                result = (result << 1) + (getNext(index, data) ? 1 : 0);
            lengthRemain -= length;
        }
        return result;
    }

    public static int getBytePos(int index) {
        return index / 6;
    }

    private static int getBitPos(int index) {
        return index % 6;
    }
}