
LeetCode
Codility
CodeSignal
iMocha
HackerEarth
Codewars
TestGorilla
HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.

Darik's Boot and Nuke
Alternate File Shredder
Active@ KillDisk
SDelete
DiskGenius
Excalidraw
Mermaid Chart
Eraser is an advanced security tool (for Windows), which allows you to completely remove sensitive...

Which is more popular?
HackerRank might be a bit more popular than Eraser. We know about 67 links to it since March 2021 and only 53 links to Eraser.
Website, pricing, platforms and company facts side by side.
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| Website | hackerrank.com | eraser.heidi.ie |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
HackerRank is recommended for students, individual learners, and job seekers looking to improve their coding skills, as well as for companies seeking an efficient way to evaluate candidates' technical abilities during the hiring process.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Is HackerRank A Good Idea?
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using HackerRank and Eraser. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


What are LeetCode and LeetCode alternatives good for?LeetCode💡Interested in leveling up your career? Apply to the Formation Fellowship...
HackerRank’s challenges cover a wide range of topics and difficulty levels, allowing developers to enhance their problem-solving skills and learn new algorithms and data structures. The competitive nature of...
HackerRank offers a wide array of challenges across various domains such as algorithms, mathematics, SQL, and functional programming. Its interface is user-friendly, and the platform provides detailed feedback on...
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Recommendations tracked on public social media and blogs since March 2021.


This way, you transfer what you already know (problem-solving) but only change the syntax. Platforms like Hackerrank are also great to solve the same problem in different languages and learn from other people’s solutions. - Source: dev.to / about 1 year ago
Firstly, solve some common data structure problems with it. Implement some data structures like arrays, linked lists, stacks, queues, etc. You can check common problems on LeetCode, Hackerank or some other resources. - Source: dev.to / over 2 years ago
I don't have a consecutive internet connection and I can't keep up learning process so I started practicing in hackerrank.com I have started some challenges in python and c++ there. Thus I have no internet connection so I cannot practice... Source: almost 3 years ago
For my drives at work, I use Eraser. It'll let you wipe entire drives or just unallocated space. A single pass of all zeroes is sufficient (listed as British HMG IS5 (Baseline) (1 pass)" in the program. Source: about 3 years ago
If you're really paranoid, try something like https://eraser.heidi.ie/ to delete any files from your computer permanently in case you think your laptop or computer might be searched. Source: over 3 years ago
I usually have my drive accessible on a windows box and use https://eraser.heidi.ie/ to fill up all the unused space with pseudorandom data at 1 pass. I call that good for my usage. Source: over 3 years ago
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Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.
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File shredding program; great alternative to Eraser.
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CodeSignal is the leading assessment platform for technical hiring.
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Active@ KillDisk allows you to destroy all data on hard and floppy drives completely, excluding any possibility of future recovery of deleted files and folders.
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