java.math.BigInteger.getLowestSetBit()

Description Of BigInteger: getLowestSetBit()

The java.math.BigInteger.getLowestSetBit() returns the index of the rightmost (lowest-order) one bit in this BigInteger (the number of zero bits to the right of the rightmost one bit). It returns -1 if this BigInteger contains no one bits. It computes (this==0? -1 : log2(this & -this))

BigInteger.getLowestSetBit() This method returns the index of the rightmost one bit in this BigInteger

Code Example Java BigInteger

import java.math.BigInteger;

public class BigIntegerExam {
 public static void main(String[] args) {
  BigInteger bi1 = new BigInteger("8");// 1000
     BigInteger bi2 = new BigInteger("7");// 0111
     BigInteger bi3 = new BigInteger("6");// 0110

     // perform getLowestSetBit on bi1, bi2
     int i1 = bi1.getLowestSetBit();
     int i2 = bi2.getLowestSetBit();
     int i3 = bi3.getLowestSetBit();

     System.out.println(i1); // output 3
     System.out.println(i2); // output 0
     System.out.println(i3); // output 1
 }
}