Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns in C++

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

Explore how to apply a greedy technique to reduce a binary number to one by counting minimal steps. Understand when to add or divide based on binary parity and manage carryovers, optimizing for time and space complexity.

We'll cover the following...

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 ...