Binary Gap
January 12, 2018
A binary gap is a sequence of 0-bits between 1-bits in the binary representation of a number. For instance, 2010 = 101002 has a binary gap of length 1 between its first and third bits; the two 0-bits that end the number are not part of a binary gap because there is no trailing 1-bit. Thus, the length of the maximal binary gap in 20 is 1. The length of the maximal binary gap in 52910 = 10000100012 is 4.
Your task is to write a program that finds the length of the maximal binary gap in a number. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.
Programming Praxis 