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Channel

Coding Interview Preparation

@coding_interview_preparation

On this record: Topic · Growth · Engagement · What this channel posts · Reactions · Posts · Polls · Citations · Telegram's recommendations · Cite this entry

5,909subscribers

+14 since we began measuring on 7 August 2026

Risers and fallers across the register · movement among entries of 3,162–10,000.

Register entry

Telegram ID-1001308712623
TypeChannel
Username@coding_interview_preparation
CreatedBetween 1 March 2018 and 31 July 2021 — estimated from Telegram’s id allocation, not measured. How this range is calculated.
First recorded7 August 2026
Last confirmed live27 September 2026
Measurements held16
Confirmed unchanged1 time, most recently 27 September 2026
On Telegramt.me/coding_interview_preparation

Topic

Education — a classification, not a measurement. An on-box language model (Qwen3.6-35B-A3B-FP8, prompt version 1) read this channel’s own recent posts on 12 September 2026 and assigned it the closest of 31 fixed categories, at 99% confidence. This is a model’s judgement about what the channel is likely to be about, not a fact this register measured the way a subscriber count or a view count is measured — it can be revised on a later pass, and it carries no weight anywhere else on this page. How this classification works, and why it has no browse page of its own yet.

Growth

5,8795,9145,896.57 August 2026 — 5,895 subscribers7 August 2026 — 5,895 subscribers7 August 2026 — 5,894 subscribers9 August 2026 — 5,906 subscribers13 August 2026 — 5,896 subscribers16 August 2026 — 5,890 subscribers19 August 2026 — 5,879 subscribers23 August 2026 — 5,888 subscribers26 August 2026 — 5,896 subscribers29 August 2026 — 5,900 subscribers31 August 2026 — 5,906 subscribers4 September 2026 — 5,914 subscribers10 September 2026 — 5,905 subscribers14 September 2026 — 5,903 subscribers17 September 2026 — 5,901 subscribers27 September 2026 — 5,909 subscribers5,9097 August 202627 September 2026
16 measurements spanning 51 days, net +14. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 5,874–5,919 and does not start at zero.
Measurement log — every subscribers count we have recorded
Measured (UTC)SubscribersChange
27 Sept 2026, 02:015,909+8
17 Sept 2026, 22:415,901-2
14 Sept 2026, 01:005,903-2
10 Sept 2026, 08:025,905-9
4 Sept 2026, 19:385,914+8
31 Aug 2026, 23:375,906+6
29 Aug 2026, 05:575,900+4
26 Aug 2026, 09:155,896+8
23 Aug 2026, 17:485,888+9
19 Aug 2026, 22:245,879-11
16 Aug 2026, 13:585,890-6
13 Aug 2026, 04:045,896-10
9 Aug 2026, 21:315,906+12
7 Aug 2026, 06:455,894-1
7 Aug 2026, 04:155,895no change
7 Aug 2026, 04:075,895first reading

Engagement

30 posts held, back to 25 July 2026 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 9 pages of Telegram’s post history, 20 posts per page.

Nothing published in the last 30 days. ERR and ER are rolling 30-day measures, so there is nothing to compute — we hold 30 posts for this entry, the most recent from 11 August 2026. An engagement rate over an empty window would be a number about nothing.

What this channel posts

Video runtime
12s
Average length
12s

Measured directly from 1 video with a duration reading, out of the posts we hold for this channel — not this channel’s whole posting history, only the sample this register has actually read. An exact reading to the second, taken from the post itself rather than from Telegram’s own rounded chrome, so it carries no ≈ mark.

Reaction mix

8 reactions across 6 posts, in 2 distinct kinds. The most used accounts for 75.0% of them.

Every reaction kind recorded on the sample, most used first
ReactionCountShareShare, drawn
❤675.0%
👍225.0%

No sentiment is inferred, and none should be read in. This table is ordered by count and by nothing else. Emoji do not carry stable meaning across languages or communities — 🙏 is thanks in one channel and mourning in another — so we publish which ones were pressed and how often, and pass no judgement on what an audience meant by them.

Precision. Telegram publishes reaction counts per emoji and short-forms each one — 4.34K, 1.2M — so any single kind at or above 1,000 reaches us at three significant figures, and only counts below 1,000 are exact. The shares above are ratios of those figures and carry the same error. This is also why the total here can differ slightly from a reaction total printed elsewhere on the page: both are sums of the same rounded parts, taken over samples with different edges.

Coverage. Reactions were read on 6 of the 30 sampled posts in this sample. Summed by Telegram’s own count on each post — not by adding up the per-emoji breakdown above — those same posts carry 8 reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.

Measured over the 30 most recent posts we hold, published 25 July 2026 to 11 August 2026, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.

Recent posts

11 Aug 2026, 16:02 UTC65 viewsread 12 August 2026

⚠️ COMMON INTERVIEW MISTAKE #4 - Bad-Mouthing a Previous Employer This comes up constantly in "why are you leaving your current role" - and it's one of the fastest ways to quietly lose an interviewer's trust, even if every word you say is true. Here's why: the interviewer isn't just evaluating your former company. They're predicting how you'll talk about THEIR company someday, if things go wrong. ❌ "My manager was…

11 Aug 2026, 11:26 UTC86 viewsread 12 August 2026

💰 SALARY NEGOTIATION #4 - Negotiating Equity, Not Just Salary Especially at startups, equity can be worth more than the base salary difference - but most candidates don't know what questions to ask. ✅ Questions to ask before accepting any equity offer: 1. "How many total shares are outstanding, fully diluted?" (Your number of shares means nothing without this - 10,000 shares out of 10 million is very different fro…

11 Aug 2026, 07:14 UTC90 viewsread 12 August 2026

🧠 EDUCATIONAL CS #4 - Trees, Graphs, and the Difference That Matters A tree is just a graph with two extra rules: no cycles, and exactly one path between any two nodes. Tree: Graph (with cycle): 1 1 --- 2 / \ | | 2 3 4 --- 3 Why does this distinction matter in interviews? 🔹 In a tree, you never need to track visited nodes during…

10 Aug 2026, 08:04 UTC131 viewsread 12 August 2026

🏗️ SYSTEM DESIGN MONDAY #5 - Let's Design TinyURL Time for our first full end-to-end design. Requirements: ✅ Given a long URL, generate a short one ✅ Given a short URL, redirect to the original ✅ High read traffic (redirects happen constantly), lower write traffic (new URLs created less often) Step 1 - the core challenge: how do we generate a short, unique code for each URL? Option A: Hash the URL (like MD5) and …

9 Aug 2026, 16:01 UTC153 viewsread 12 August 2026

🔍 GUESS THE OUTPUT #5 - full breakdown python print(bool("False")) print(bool("")) print(bool([False])) print(bool(0.0)) Answers: True False True False Breakdown: 1️⃣ "False" is a non-empty string - any non-empty string is truthy, REGARDLESS of its content. The string literally saying "False" doesn't matter. 2️⃣ "" is an empty string - falsy. 3️⃣ [False] is a list containing one element - and non-empty lists ar…

9 Aug 2026, 07:56 UTC153 viewsread 12 August 2026

🔍 GUESS THE OUTPUT #5 Language: Python python print(bool("False")) print(bool("")) print(bool([False])) print(bool(0.0)) Lock in your answer, then vote on the quiz below 👇

9 Aug 2026, 07:56 UTC156 viewsread 12 August 2026
Poll

What does bool("False") return in Python?

  1. True58%
  2. False25%
  3. TypeError17%
  4. None0%

Shares as published. No per-option vote count is published by Telegram, so none is shown.

8 Aug 2026, 07:31 UTC178 viewsread 12 August 2026

📊 SQL SATURDAY #5 - Window Functions (The Interview Differentiator) If GROUP BY collapses rows, window functions let you calculate aggregates WITHOUT collapsing them - you keep every row, plus a calculated value alongside it. This is one of the clearest signals of SQL seniority in interviews. sales +----+------------+--------+ | id | department | amount | +----+------------+--------+ | 1 | Eng | 100 | |…

7 Aug 2026, 11:05 UTC199 viewsread 12 August 2026

📄 RESUME ROAST #4 > "2020-2023: Software Engineer > 2023-2024: Senior Software Engineer > 2024-Present: Software Engineer II" Spot the issue before I explain 👇 . . . The roast: This looks like a demotion, and recruiters WILL notice and wonder about it - even if "Software Engineer II" is actually a level ABOVE "Senior Software Engineer" at your specific company (title inflation and naming varies wildly between com…

7 Aug 2026, 07:36 UTC191 viewsread 12 August 2026

🎯 CODING CHALLENGE #7 - Kth Largest Element in an Array Difficulty: Medium | Asked at: Facebook, Amazon, Google Input: nums = [3,2,1,5,6,4], k = 2 Output: 5 💡 Hint: Sorting works but is O(n log n). Can you do better with a heap that only ever holds k elements? Solution (min-heap approach): python import heapq def find_kth_largest(nums, k): heap = nums[:k] heapq.heapify(heap) for num in nums[k:]: …

6 Aug 2026, 07:05 UTC196 views2 reactionsread 12 August 2026

🕵️ RECRUITER SECRETS #4 - What Actually Happens After Your Interview Ever wondered what happens the moment you leave that Zoom call? Here's the real process at most mid-to-large companies: 1️⃣ Each interviewer independently writes feedback and a rating (usually a scale like "Strong Hire / Hire / No Hire / Strong No Hire") before discussing with anyone else - this is intentional, to avoid groupthink. 2️⃣ These are …

❤2

5 Aug 2026, 11:51 UTC210 viewsread 12 August 2026

🐛 SPOT THE BUG #4 Language: JavaScript (React) javascript function UserProfile({ userId }) { const [user, setUser] = useState(null); useEffect(() => { fetchUser(userId).then(data => setUser(data)); }); return <div>{user?.name}</div>; } What's the bug? 👇 . . . The bug: Missing dependency array in useEffect. Without [userId] (or even []), this effect runs after EVERY render - and since setUser trigge…

Showing the 12 most recent of 30 posts we hold for @coding_interview_preparation. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.

Polls

The poll we hold for this entry, as Telegram rendered it when we read the post. A poll’s figures keep moving after that, so each one is dated.

9 Aug 2026, 07:56 UTCAnonymous Quiz24 voters

What does bool("False") return in Python?

  1. True58%
  2. False25%
  3. TypeError17%
  4. None0%

Shares as published. No per-option vote count is published by Telegram, so none is shown.

Percentages only — there are no per-option vote counts here, because Telegram publishes none. The public post preview gives each option’s share and a single voter total, and nothing else. Multiplying one by the other would produce a per-option tally that looks measured and is not: the shares are rounded to whole numbers before we ever see them. We print what was published and leave the column that does not exist empty.

The shares need not add up to 100. Rounding alone puts many polls at 99 or 101. A poll that allows more than one answer per voter runs well past 100 by design, and several here do. The bars are drawn against a fixed 100% track at each option’s own percentage rather than normalised to the total, so a poll that exceeds it shows that it does instead of being quietly rescaled.

Read from the 30 most recent posts we hold, published 25 July 2026 to 11 August 2026. Telegram labels each poll by kind — an anonymous poll, a quiz, a closed set of final results — and that label is reproduced rather than paraphrased.

Forward network

Republishes

Channels on the register whose posts this channel has forwarded.

Built only from forwarded posts we have actually read, on both sides. Coverage is early and deliberately incomplete: a missing link means we have not read the post that would prove it, never that the relationship does not exist. Counts are distinct forwarded posts observed, so they only ever go up as we read more.

Mentions

Named by 1 registered channel — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.

Named by

Channels on the register whose posts name this channel's handle.

A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.

Appears in Telegram’s recommendations for other channels

The reverse of the list above, and a different kind of signal. This does not require this channel to have ever been asked about directly — each row below is a channel we DID ask Telegram about, whose Telegram-generated list happened to include this one. A channel can appear here with an empty list above it, because being named by someone else’s query is independent of having been queried itself.

Programming, data science, ML - free courses by Big Data Specialist
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Coding Interview Resources
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Telegram ranks this channel #38 of 78 here — alongside 77 others — read 30 August 2026
Placement Ducat
@placementducatindia · 36,147
Telegram ranks this channel #41 of 73 here — alongside 72 others — read 2 September 2026
AI & Coding Resources 👨‍💻📑🚀
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Telegram ranks this channel #41 of 72 here — alongside 71 others — read 1 September 2026
Coding AI Interview Jobs
@Interview_Jobs · 22,603
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Python Interviews
@PythonInterviews · 28,969
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Mark Booster
@markbooster1 · 40,696
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Job Interview Preparation - Remote Work
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JobsOrigin.com - Off Campus | Internship | Walk In Drives
@joinjobsorigin · 39,424
Telegram ranks this channel #49 of 59 here — alongside 58 others — read 30 August 2026
Coding Projects
@Programming_experts · 67,682
Telegram ranks this channel #50 of 84 here — alongside 83 others — read 20 August 2026
Programming Resources | Python | Javascript | Artificial Intelligence Updates | Computer Science Courses | AI Books
@programming_guide · 56,038
Telegram ranks this channel #51 of 84 here — alongside 83 others — read 23 August 2026
Data Analyst Interview Resources
@dataanalystinterview · 52,609
Telegram ranks this channel #53 of 85 here — alongside 84 others — read 24 August 2026
Computer Science and Programming
@computer_science_and_programming · 140,074
Telegram ranks this channel #53 of 87 here — alongside 86 others — read 13 August 2026
Jobs | Internships | Placement | Interviews
@getjobss · 113,437
Telegram ranks this channel #56 of 83 here — alongside 82 others — read 14 August 2026
Off Campus Jobs ⛥
@jobsinternshipshub · 22,440
Telegram ranks this channel #57 of 81 here — alongside 80 others — read 20 September 2026
Coding & AI Resources
@leadcoding · 35,444
Telegram ranks this channel #57 of 79 here — alongside 78 others — read 2 September 2026
Coding_knowledge
@coding_knwledge01 · 78,711
Telegram ranks this channel #58 of 82 here — alongside 81 others — read 18 August 2026
Python Projects & Free Books
@pythonfreebootcamp · 40,776
Telegram ranks this channel #59 of 78 here — alongside 77 others — read 30 August 2026
Diploma Jobs
@diplomajobs1 · 33,609
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Learn Code With Durgesh ✅
@learncodewithdurgesh · 21,358
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Programing Resources: Python - Java - R - SQL - Javascript - C++
@the_programming_girls · 30,491
Telegram ranks this channel #63 of 79 here — alongside 78 others — read 7 September 2026

This channel appears in 43 seed channels' Telegram-generated recommendation lists in total, of which the 24 where it ranks highest are shown above. Each is Telegram’s list for THAT channel, not this one — see how this is measured.

Cite this entry

A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 27 September 2026 — this entry's latest reading, not the date you are reading this.

“Coding Interview Preparation” (@coding_interview_preparation), 5,909 subscribers as measured 27 September 2026. Telegram Register, tgregister.com/channel/coding_interview_preparation.

Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.