Android BigInteger Create getUnsignedBigInteger(byte[] data, int start, int length)

Description

Returns a positive BigInteger from the given bytes.

License

Open Source License

Parameter

Parameter	Description
data	- A byte[] containing the data to convert
start	- An int representing the position of the first byte to copy.
length	- An int representing the number of bytes to process.

Return

A BigInteger created from the given bytes.

Declaration

public static BigInteger getUnsignedBigInteger(byte[] data, int start,
        int length) 

Method Source Code

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

import java.math.BigInteger;

public class Main {
    /**/*from  w ww  .java 2s  .com*/
     * Returns a positive BigInteger from the given bytes. (Big endian)
     * 
     * @param data - A byte[] containing the data to convert
     * @param start - An int representing the position of the first byte to copy.
     * @param length - An int representing the number of bytes to process.
     * 
     * @return A BigInteger created from the given bytes.
     */
    public static BigInteger getUnsignedBigInteger(byte[] data, int start,
            int length) {
        if (length == 0) {
            return BigInteger.ZERO;
        }

        byte[] value = new byte[length + 1];
        System.arraycopy(data, start, value, 1, length);

        return new BigInteger(value);
    }
}