Number of Times Binary String Is Prefix-Aligned | JavaScript Coding Question | LeetCode Solution

Описание: Learn how to solve the “Number of Times Binary String Is Prefix-Aligned” problem efficiently using JavaScript! In this LeetCode coding interview question, you flip bits one by one in a binary string. A string is prefix-aligned if all bits from 1 to the current step are 1, and the rest are 0. The goal is to count how many times the string becomes prefix-aligned during the flipping process.

In this tutorial, you’ll learn:
✅ How to track the maximum flipped index for optimal performance
✅ How to use a greedy approach to avoid simulating the entire binary string
✅ Step-by-step JavaScript implementation with examples

Example:

numTimesAllBlue([3,2,4,1,5]); // 2 numTimesAllBlue([4,1,2,3]); // 1 numTimesAllBlue([1,2,3,4,5]); // 5

Topics Covered:

JavaScript Arrays & Loops

Greedy Algorithm Technique

LeetCode Problem Solving

Efficient Binary String Simulation

Edge Case Handling

Prepare for coding interviews and learn how to solve prefix-alignment problems efficiently in JavaScript!


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