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Coding Interview Resources

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This channel contains the free resources and solution of coding problems which are usually asked in the interviews. Managed by: @love_data

Network: Free Courses with Certificate - Python Programming, Data Science, Java Coding, SQL, Web Development, AI, ML, ChatGPT ExpertIndia6 635Technologies & Applications2 553...

📈 Analytical overview of Telegram channel Coding Interview Resources

Channel Coding Interview Resources (@crackingthecodinginterview) in the English language segment is an active participant. Currently, the community unites 51 978 subscribers, ranking 2 553 in the Technologies & Applications category and 6 635 in the India region.

📊 Audience metrics and dynamics

Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 51 978 subscribers.

According to the latest data from 04 November, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -224 over the last 30 days and by -12 over the last 24 hours, overall reach remains high.

Verification status: Not verified
Engagement rate (ER): The average audience engagement rate is 2.23%. Within the first 24 hours after publication, content typically collects 0.60% reactions from the total number of subscribers.
Post reach: On average, each post receives 1 158 views. Within the first day, a publication typically gains 312 views.
Reactions and interaction: The audience actively supports content: the average number of reactions per post is 1.
Thematic interests: Content is focused on key topics such as array, stack, algorithm, programming, sort.

📝 Description and content policy

The author describes the resource as a platform for expressing subjective opinions:
“This channel contains the free resources and solution of coding problems which are usually asked in the interviews. Managed by: @love_data”

Thanks to the high frequency of updates (latest data received on 05 November, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.

51 978

Subscribers

-1224 hours

-237 days

-22430 days

1 158

Post views

~ 31224 hours

~ 47048 hours

2.23%

Engagement rate

No data

Posts per day

Ads index

Posts Archive

51 978

18. Thank You.zip6.87 MB

51 978

19. Extras Google, Amazon, Facebook Interview Questions.zip11.04 MB

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12. Algorithms Recursion.zip607.54 MB

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16. Non Technical Interviews.zip865.17 MB

51 978

15. Algorithms Dynamic Programming.zip380.66 MB

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14. Algorithms Searching + BFS + DFS.zip831.14 MB

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11. Data Structures Graphs.zip331.20 MB

51 978

10. Data Structures Trees.zip875.77 MB

51 978

9. Data Structures Stacks + Queues.zip593.70 MB

51 978

8. Data Structures Linked Lists.zip873.77 MB

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3. Big O.zip1062.69 MB

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6. Data Structures Arrays.zip710.11 MB

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4. How To Solve Coding Problems.zip718.22 MB

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5. Data Structures Introduction.zip409.09 MB

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7. Data Structures Hash Tables.zip706.64 MB

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2. Getting More Interviews.zip1047.97 MB

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1. Introduction.zip132.79 MB

51 978

🔰 Master the Coding Interview: Data Structures + Algorithms ⏱ 19.5 Hours 📦 258 Lessons Ultimate coding interview bootcamp. Get more job offers, negotiate a raise, and learn everything you need to get the job you want! Taught by: Andrei Neagoie Join @crackingthecodinginterview to learn with fun 👇👇

51 978

Solution: The first idea is to enumerate all permutations (either in lexicographical order, or sort them afterwards) and return the k-th one. But this is quite inefficient. Do we really need to generate permutations we don't care about? E.g. what if we need to return the last permutation of a string "abcd" do we need to generate permutations that start with "a"? Probably not, but can we compute what element the k-th permutation will start with? How many permutations will start with the smallest element in the array? The answer is (n-1)! Therefore, we can compute the first element of the permutation we need to compute. But wait, can we do the same for the second character? Yes we can! The number of permutations that start with the fixed first two characters are (n-2)!. So all we need to do is starting with the first character, compute what character will be on each position in the k-th permutation.

51 978

Problem: You are given a string with distinct letters. How to find k-th (lexicographically) permutation of this string?