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	165	December 30, 2019
System design for Android/iOS app Courses grokking-the-system-design-interview__design-gurus	1	335	January 12, 2020
How concurrency and conflicts will be handled Courses designing-dropbox__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	2	255	November 29, 2019
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	100	August 25, 2020
Missing Details Courses designing-facebook’s-newsfeed__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	63	May 22, 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	61	May 30, 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	54	May 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	5	130	September 2, 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	200	September 11, 2020
Distributed File storage vs Object storage Courses designing-youtube-or-netflix__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	3	256	August 6, 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	1	90	January 1, 2020
Why is `check_for_fine` method included in every class, it is added in `Rack` class also Courses design-a-library-management-system__object-oriented-design-case-studies__grokking-the-object-oriented-design-interview , grokking-the-object-oriented-design-interview__design-gurus	1	92	November 14, 2019
Assumption on 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	4	167	May 24, 2020
Why is the Time Complexity O(N) for smallest sub array? Courses smallest-subarray-with-a-given-sum-easy__pattern-sliding-window__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	7	229	January 12, 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	83	December 25, 2019
Design a Payment System Courses contact-us__appendix__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	52	June 26, 2020
Response Queues - Scalability Concerns Courses designing-dropbox__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	4	179	April 21, 2020
Missing class in the design : Please do answer... its a paid service Courses design-a-restaurant-management-system__object-oriented-design-case-studies__grokking-the-object-oriented-design-interview , grokking-the-object-oriented-design-interview__design-gurus	2	147	December 24, 2019
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	47	August 3, 2020
Why can't we just generate random key? Courses designing-a-url-shortening-service-like-tinyurl__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	4	333	April 9, 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	1	38	May 29, 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	6	272	September 26, 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	163	December 23, 2019
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	87	February 18, 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	87	June 18, 2020
We can have SOAP or REST APIs Courses designing-pastebin__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	1	136	November 15, 2019
Choosing between SQL and NoSQL databases is not explained which one to choose Courses designing-twitter__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	3	276	March 22, 2020
Can somebody explain the calculation of Time Complexity in better words? Courses happy-number-medium__pattern-fast-slow-pointers__grokking-the-coding-interview-patterns-for-coding-questions , grokking-the-coding-interview-patterns-for-coding-questions__design-gurus	5	171	February 9, 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	127	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	100	March 25, 2020
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	97	April 4, 2020
Wrong Quiz Solution Courses untagged	4	93	December 27, 2019
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	124	January 24, 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	86	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	82	December 27, 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	84	January 21, 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	186	September 26, 2020
Why use heaps here? 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	4	142	April 18, 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	169	July 2, 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	3	79	August 27, 2020
Log2(n)*(4n-4) transformation for nested sum++ Courses solution-review-big-o-of-nested-loop-with-multiplication__complexity-measures__data-structures-for-coding-interviews-in-java , data-structures-for-coding-interviews-in-java__coderust	5	141	December 18, 2019
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	71	December 19, 2019
Does pre generated news feed contain photos and videos as well? Courses designing-instagram__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	4	315	November 10, 2019
Why cannot server-sent-events be used in place of Long Polling or WebSockets? Courses designing-facebook-messenger__system-design-problems__grokking-the-system-design-interview , grokking-the-system-design-interview__design-gurus	2	200	September 11, 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	65	January 17, 2020
Fibonacci Sequence Courses exercise-2-fibonacci-sequence-upto-n-number-of-terms__loops__learn-c-from-scratch , learn-c-from-scratch__educative	3	78	February 10, 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	179	April 20, 2020
For loops in Python Courses reverse-string__stack__data-structures-and-algorithms-in-python , data-structures-and-algorithms-in-python__vincent-russo	2	41	February 15, 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	58	December 8, 2019
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	57	March 31, 2020