Educative

Topic	Replies	Views	Activity
Need better explanation and example walk through Courses longest-substring-with-same-letters-after-replacement-hard__pattern-sliding-window__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	1	200	December 30, 2019
System design for Android/iOS app Courses grokking-the-system-design-interview__design-gurus	1	512	January 12, 2020
Simple Explanation for program line : count += right - left; Courses triplets-with-smaller-sum-medium__pattern-two-pointers__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	4	127	August 25, 2020
Does anyone else feel the input test cases could be better? Courses triplet-sum-close-to-target-medium__pattern-two-pointers__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	1	53	September 19, 2020
Why is the time complexity O(n^3) shouldn't it be O(n^2)? Courses subarrays-with-product-less-than-a-target-medium__pattern-two-pointers__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	6	200	October 24, 2020
Doesn't sharding on LocationID mean that every node will be a hot node? Courses designing-yelp-or-nearby-friends__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	71	August 3, 2020
Missing Database Schema Courses designing-youtube-or-netflix__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	85	May 30, 2020
Dark mode for all content! Courses grokking-dynamic-programming-patterns-for-coding-interviews__design-gurus , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	1	39	November 11, 2020
Missing Details Courses designing-facebook’s-newsfeed__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	73	May 22, 2020
Detailed design diagram - missing an arrow? Courses designing-uber-backend__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	65	May 19, 2020
Line 16 of the solution Courses triplet-sum-close-to-target-medium__pattern-two-pointers__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	3	241	September 11, 2020
Load Balancer Vs API gateway Courses load-balancing__glossary-of-system-design-basics__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	196	June 15, 2020
What does hashtable overhead mean? Courses designing-an-api-rate-limiter__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	3	136	September 27, 2020
Explain Runtime Please Courses palindromic-partitioning__pattern-4-palindromic-subsequence__grokking-dynamic-programming-patterns-for-coding-interviews , grokking-dynamic-programming-patterns-for-coding-interviews__design-gurus	4	108	October 20, 2020
As it said, the problem is similar to LCS, can we solve it in this way? Courses shortest-common-super-sequence__pattern-5-longest-common-substring__grokking-dynamic-programming-patterns-for-coding-interviews , grokking-dynamic-programming-patterns-for-coding-interviews__design-gurus	1	107	December 25, 2019
Design a Payment System Courses contact-us__appendix__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	77	June 26, 2020
Why store pastebin contents in object-storage (S3) instead of the RDBMS table? Courses designing-pastebin__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	2	249	May 21, 2020
Can't understand why we don't calculate the maxRepeating for each window Courses longest-substring-with-same-letters-after-replacement-hard__pattern-sliding-window__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	4	58	October 31, 2020
Response Queues - Scalability Concerns Courses designing-dropbox__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	4	221	April 21, 2020
Choosing Cassandra over others. Why? And some general doubts -Designing Instagram Courses designing-instagram__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	7	339	September 26, 2020
A mistake in the complexity calculations? Courses subsets-easy__pattern-subsets__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	2	71	October 24, 2020
Cant Wrap my head around the Logic Courses longest-subarray-with-ones-after-replacement-hard__pattern-sliding-window__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	2	128	June 18, 2020
Alternate solution Courses solution-review-array-of-products-of-all-elements__introduction-to-arrays__data-structures-for-coding-interviews-in-javascript , data-structures-for-coding-interviews-in-javascript__coderust	1	47	January 29, 2020
Length attribute in linked list Courses length__singly-linked-lists__data-structures-and-algorithms-in-python , data-structures-and-algorithms-in-python__vincent-russo	3	108	February 18, 2020
What are the strategies to avoid key duplication and concurrency issues Courses designing-a-url-shortening-service-like-tinyurl__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	183	December 23, 2019
TweetID data size Courses designing-twitter-search__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	2	50	October 10, 2020
A slightly simpler and a bit more optimized solution Courses solution-review-problem-challenge-1__pattern-two-heaps__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	2	49	October 5, 2020
I did not understand why num1 & num2 gives us 0. Please could you explain that? Courses bitwise-operators__data-types-and-variables__learn-python-3-from-scratch , learn-python-3-from-scratch__educative	8	164	August 22, 2020
Location updates from 1million drivers Courses designing-uber-backend__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	118	March 25, 2020
How is app_dev_key implemented for unregistered users? Courses designing-a-url-shortening-service-like-tinyurl__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	4	226	September 26, 2020
Sharding by creation time/epoch - why hot spots? And using the combo ID, why do we not need to filter by creation time? Courses designing-twitter__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	123	February 6, 2020
Wrong Quiz Solution Courses untagged	4	111	December 27, 2019
Why not use geohash algorithm for this exercise? Courses designing-yelp-or-nearby-friends__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	114	April 4, 2020
Max Heap initialization (reverse order comparator) Courses sliding-window-median-hard__pattern-two-heaps__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	1	107	January 11, 2020
Why not add some usage of design patterns in OO Design course? Courses design-stack-overflow__object-oriented-design-case-studies__grokking-the-object-oriented-design-interview , grokking-the-object-oriented-design-interview__design-gurus	1	103	December 27, 2019
For loops in Python Courses reverse-string__stack__data-structures-and-algorithms-in-python , data-structures-and-algorithms-in-python__vincent-russo	2	65	February 15, 2020
Using super() and this() in a constructor Courses super-keyword__inheritance__learn-object-oriented-programming-in-java , learn-object-oriented-programming-in-java__educative	2	143	January 24, 2020
The question don't said the numbers taken from the range 1 to ‘n’ Courses solution-review-problem-challenge-2__pattern-cyclic-sort__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	7	61	October 1, 2020
Doubt in Space Time Complexity Courses triplet-sum-to-zero-medium__pattern-two-pointers__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	1	88	December 19, 2019
Please elaborate the left and right shift Courses bitwise-operators__data-types-and-variables__learn-python-3-from-scratch , learn-python-3-from-scratch__educative	1	92	January 21, 2020
Sketch for the system overall Courses designing-typeahead-suggestion__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	3	198	July 2, 2020
Fibonacci Sequence Courses exercise-2-fibonacci-sequence-upto-n-number-of-terms__loops__learn-c-from-scratch , learn-c-from-scratch__educative	3	102	February 10, 2020
How is this different from the coin change problem? Courses number-factors__pattern-3-fibonacci-numbers__grokking-dynamic-programming-patterns-for-coding-interviews , grokking-dynamic-programming-patterns-for-coding-interviews__design-gurus	1	79	February 1, 2020
Need help about recursive function question's solution Courses quick-quiz-on-functions__functions__learn-php-from-scratch , learn-php-from-scratch__educative	4	96	February 17, 2020
Admin , Account composition Courses design-amazon-online-shopping-system__object-oriented-design-case-studies__grokking-the-object-oriented-design-interview , grokking-the-object-oriented-design-interview__design-gurus	1	77	January 17, 2020
Why is it necessary to have left pointer follow right pointer? Courses subarrays-with-product-less-than-a-target-medium__pattern-two-pointers__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	1	70	December 8, 2019
No mention of the UserPhoto table Courses designing-instagram__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	16	November 4, 2020
Difference between using PostgreSQL and Elastic Search? Courses designing-facebook-messenger__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	2	223	April 20, 2020
How does choosing some other characters out of the base64 encoded string other than the first 6 letters resolve key duplication? Courses designing-a-url-shortening-service-like-tinyurl__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	74	March 31, 2020
It is great challenge, I got it Courses solution-review-remove-duplicate-from-a-linked-list__linked-lists__data-structures-for-coding-interviews-in-java , data-structures-for-coding-interviews-in-java__coderust	2	51	December 23, 2019