Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.math.BigInteger;

public class Main {
    public static BigInteger byteArrayToBigInteger(byte[] b, int offset, int length) {
        if (b.length < offset + length) {
            throw new IllegalArgumentException("offset + length must be less than or equal to b.length");
        }

        BigInteger value = BigInteger.valueOf(0);
        for (int i = 0; i < length; i++) {
            value = value.shiftLeft(8);
            value = value.add(BigInteger.valueOf(b[i + offset] & 0x000000ff));
        }
        return value;
    }
}