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not able to access paid content ,please somebody help

The 3Sum problem

Why does the solution use a HashSet? Can we do it without a HashSet? class Solution { …

Is it okay to post personal solutions in the discussions section?

Hey, I didn't understand this recursive solution of reversing a linked list

class Solution { public ListNode reverseList(ListNode head) { } …

preferable ordered for the categories and topics

does the categories order in a specific way when I join the platform or it's just set in an arbitrary way? and if it's not ordered what is the preferable order I use to go through the topics from easy to advance ones?

Custom Comparators

Hi, Im having a hard time learning how to implement a custom comparator. Lets say I want to write a comparator for a minHeap that sorts integers with respect to the difference between them and some number x. I understand that a comparator returns 1 if a > b, 0 if a==b and -1 if…

Hi all, glad to be here.

I was wondring if there's some sort of promo code for the platform

Back To Back SWE Support Community

Why This Exists In addition to our normal support and ticketing system (https://backtobackswe.com/contact) we have created this community so that we can keep histories of things like content requests, feature requests, etc. Ways To Contact Us …