Small plug-- this is what I tried to do with https://algodaily.com - going from the easiest algorithms (like "Reverse a String") all the way to Union-Find, while sprinkling implementations of BST, graphs, etc. along the way.
Also, I don't see how this is any different from leetcode/hackrank etc. You just support less languages. Your first question is a "island" style problem which isn't a CS algo question, it's just a brainteaser like leetcode often gives you.
1 - It does have TLS/SSL, just changed the referring link to https and redirecting all http to https
2 - That's a fair assessment, check out https://algodaily.com/challenges/validate-palindrome for a sense of how it differs: a) the step-through visualization button helps you know what's going on at each step, b) the trivia style questions help you "piece together" the solution before answering it fully, and c) each walkthrough walks you through the actual solution step by step, in plain English.
"The change you wanted was rejected. Maybe you tried to change something you didn't have access to.
If you are the application owner check the logs for more information."
Also, do you really need me to signup with a password? These days I'm skeptical of putting passwords out there, and it's just a mailing list.
And definitely do not need a password. You only need a password if you want an account to save your progress.
If you just want to sign up for the mailing list, you can do so on the popover, at the bottom of https://algodaily.com/sample_newsletter, or at the bottom of any lesson like https://algodaily.com/lessons/how-to-get-better-at-coding-in...