Java BigInteger Calculate getDigitCount(BigInteger number)

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Description

get Digit Count

License

Open Source License

Declaration 

public static int getDigitCount(BigInteger number)

Method Source Code

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

import java.math.BigInteger;

public class Main {
    public static int getDigitCount(BigInteger number) {
        double factor = Math.log(2) / Math.log(10);
        int digitCount = (int) (factor * number.bitLength() + 1);
        if (BigInteger.TEN.pow(digitCount - 1).compareTo(number) > 0) {
            return digitCount - 1;
        }//  www. jav  a2s .c o  m
        return digitCount;
    }
}

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