java - bitwise most significant set bit

Question

I want to find the most significant bit that is set to 1. I have tried every possible way from & to ORing all of the bits from 1 to 31 and it doesn't work.

Like if 1000000 I would like to have 7.

Answer 1

http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Integer.html#numberOfLeadingZeros%28int%29 You want something like 32 - Integer.numberOfLeadingZeros(value).