Скачать или смотреть Solving the Longest Strings Puzzle from CodeSignal

Struggling with the longest strings puzzle in CodeSignal? Learn how to identify and correct the common mistakes in JavaScript and return all the longest strings in an array successfully!
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This video is based on the question https://stackoverflow.com/q/63849373/ asked by the user 'RANDOM DONUT' ( https://stackoverflow.com/u/11020025/ ) and on the answer https://stackoverflow.com/a/63849491/ provided by the user 'LéoValette' ( https://stackoverflow.com/u/14260956/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Solving the Longest Strings Puzzle from CodeSignal: A Step-by-Step Guide

When tackling coding challenges, it's not uncommon to run into roadblocks. One such challenge is the "longest strings" puzzle from CodeSignal. The goal of this puzzle is straightforward: given an array of strings, the task is to identify and return all the strings that are the longest in that array.

However, if you're stuck, you're not alone. This guide dives into a common code solution, points out errors, and provides a clear path to the correct answer.

The Problem

The primary requirement of the longest strings puzzle is to return an array containing all the longest strings from the input array. Let's consider an example:

Given the input:

[[See Video to Reveal this Text or Code Snippet]]

The expected output would be:

[[See Video to Reveal this Text or Code Snippet]]

A Closer Look at the Original Code

Many programmers might attempt to solve the problem with the following code:

[[See Video to Reveal this Text or Code Snippet]]

Now, let’s break down the main issues with this code.

Common Mistakes Found

Using the Wrong Comparison Operator:

In the line:

[[See Video to Reveal this Text or Code Snippet]]

The code is incorrectly comparing a string with a number. You should be comparing the length of the string with currentLargest.

Assignment vs Comparison:

In the line:

[[See Video to Reveal this Text or Code Snippet]]

There is an assignment operator = which should be a comparison operator ==. Assigning in the condition will not work as intended and can lead to logical errors.

The Corrected Code

Based on the observations made, here’s the corrected version of the code:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Solution

Step-by-Step logic:

Initialize Variables:

currentLargest: to keep track of the length of the longest strings found.

largestStrings: to store an array of the longest strings.

Iterate Through the Array:

For each string, check its length against currentLargest.

If a longer string is found, update currentLargest and reset largestStrings.

If a string matches the current longest length, add it to largestStrings.

Return the Result:

Finally, return the largestStrings array.

Conclusion

By identifying and correcting the small mistakes in the original code, we've arrived at the proper solution for the longest strings puzzle. If you follow the outlined steps and approach the problem methodically, you'll find that coding challenges can be overcome, enhancing both your problem-solving skills and your proficiency in JavaScript.

Happy coding!