SoftwareTestPilot
LearnCoding RoundsCommunityJobsQA Resources
All questions
BasicJavaScript~5 min

Reverse a string without reverse()

Service companies and SDET screening rounds

Points available

100/100

Your mission

  1. Read
  2. 2Run
  3. 3Submit
  4. 4Solve

Write reverseString(str) that returns the string reversed.

Do not use the built-in Array.prototype.reverse().

Examples

reverseString("hello") → "olleh"
reverseString("") → ""

Hints

Each hint costs 10 points on a full solve.

Interviewer follow-ups

  • What is the time complexity?
  • How would you handle emoji or surrogate pairs?

Ctrl+Enter to run · add Shift to submit

1
2
3
4
5
6
Tab inserts two spaces. Press Escape, then Tab, to leave the editor.
Terminal

$ node solution.js

Run executes the open file. Submit scores solution.js against hidden tests.

SoftwareTestPilot

Learn QA, prove your skills, connect with testers and grow your career.

Platform
  • Learn
  • Community
  • Jobs
Resources
  • QA Resources
  • Interview Questions
  • QA Tools
  • Articles
  • Products
Company
  • About
  • Contact
  • Authors & Reviewers
  • Editorial Policy
  • Sitemap
© 2026 SoftwareTestPilot. All rights reserved.
Operated by SoftwareTestPilot · Pune, Maharashtra, India · softwaretestingsapiens@gmail.com
PrivacyTermsCookiesDisclaimerRefundsAccessibility