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Grokking the Coding Interview Patterns in Go

Solution: Number of Steps to Reduce a Binary Number to One

Understand how to apply a greedy algorithm to reduce a binary number to one by incrementing odd digits and dividing even digits. This lesson guides you through step counting, carry management, and efficient iteration over binary strings, helping you develop optimal problem-solving skills for coding interviews.

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Statement

You are given a string, str, as a binary representation of an integer. Your task is to return the number of steps needed to reduce it to 11 by following these rules:

  • If the number is even, divide it by 22.

  • If the number is odd, add 11 to it.

You can always reach 1 for all provided test cases.

Constraints:

  • 1<=1 <= str.length <=500<= 500 ...