Screen TypeScript candidates on real starter repos

TypeScript

Starter~2h

In a user identity system, an alias cluster is a group of usernames that share exactly the same letters in a different arrangement. Two usernames belong to the same cluster if one can be formed by rearranging the letters of the other.

TypeScript

Standard~3h

Given a word, compute the badge points for that word. You'll need these:

TypeScript

Starter~2h

An internal billing system assigns sequential period numbers to billing cycles. Some periods are designated as extended — they receive an extra processing day for reconciliation.

TypeScript

Standard~3h

Convert an encoded payload, represented as a sequence of symbol values in one radix, to any other radix.

TypeScript

Standard~2h

You are building a roster system for a developer training academy. Participants are assigned to numbered cohorts based on their experience track. The program coordinator needs to view participants grouped by cohort, with each cohort's list sorted alphabeticall…

TypeScript

Standard~2h

You are writing a decoder for a legacy industrial robot controller. The controller receives a continuous stream of 3-character instruction codes. Each triplet maps to a named operation. If a HALT code appears, execution stops immediately.

TypeScript

Standard~3h

Implement a function that encodes plain English text into commit jargon. Your team uses an internal shorthand for obfuscating draft commit messages before they reach the shared log. The encoding follows a small set of deterministic rules applied word-by-word.

TypeScript

Starter~2h

You are working on a small internal tool that compares two configuration snapshots.

TypeScript

Standard~3h

You are cleaning imported contact records before they are saved into a CRM. Each record includes a freeform phone field entered by a human, so the data can contain spaces, dots, parentheses, hyphens, and an optional leading country code of 1.

TypeScript

Standard~3h

Output the lyrics to 'The Twelve Days of Christmas'. ``text On the first day of Christmas my true love gave to me: a Partridge in a Pear Tree.

TypeScript

Starter~2h

Determine if a text sample has full alphabet coverage. A sample with full coverage uses every letter of the alphabet at least once. The best-known example is: > The quick brown fox jumps over the lazy dog.

TypeScript

Standard~3h

A maritime signal station transmits messages using a sequence of signal flags. A numeric transmission code determines which flags to raise and in what order.

TypeScript

Standard~3h

Identify grid crossovers in an operations matrix. A grid crossover is a cell whose value is greater than or equal to every value in its row and less than or equal to every value in its column.

TypeScript

Advanced~4h

In a grid hunt challenge you scan a rectangular field of characters to locate hidden target strings.

TypeScript

Starter~2h

Implement a steps function that computes how many cascade steps a hailstone particle takes to reach unit mass.

TypeScript

Starter~2h

Implement the response logic for a basic help-desk chatbot. The bot handles incoming support messages and replies with one of five canned responses based on the message content.

TypeScript

Standard~3h

An internal post-mortem tool reconstructs incident chains. Each step in the chain describes an event and how it caused the next, building a cumulative narrative from the root cause forward.

TypeScript

Standard~3h

An invoicing system needs to print amounts in words on official documents. Given an integer from 0 to 999,999,999,999, return its English representation.

TypeScript

Standard~3h

Read the digits shown on an industrial meter's segment display. Each digit is rendered as a 3-column × 4-row pattern of pipes (|), underscores (_), and spaces. Parse these patterns and return the corresponding numeric string.

TypeScript

Standard~3h

The parcel reference checksum process is used to validate operational parcel identifiers. These normally contain dashes and look like: 3-598-21508-8

TypeScript

Advanced~4h

Compute the result for a game of Hex / Polygon. The abstract boardgame known as [Hex](https://en.wikipedia.org/wiki/Hex_%28board_game%29) / Polygon / CON-TAC-TIX is quite simple in rules, though complex in practice.

TypeScript

Advanced~4h

Given a layout diagram, determine which plants belong to each tenant in a shared rooftop planter.

TypeScript

Standard~3h

Use the Sieve of Eratosthenes to find all the primes from 2 up to a given number.

TypeScript

Starter~2h

You are cleaning up a legacy priority table used by an internal routing tool. The old format groups item codes by integer priority. The new format needs a direct lookup from item code to priority.

TypeScript

Starter~2h

A product team tracks how quickly a release ages across several cadence tiers. Given an age in seconds, calculate how old that release would be on:

TypeScript

Standard~3h

Generate the lyrics of the song 'I Know an Old Lady Who Swallowed a Fly'. While you could copy/paste the lyrics, or read them from a file, this problem is much more interesting if you approach it algorithmically.

TypeScript

Standard~3h

You are auditing a service's observability configuration. Each service carries a single numeric score that encodes which sensitivity levels are currently active.

TypeScript

Advanced~4h

Add the adjacent hazard counts to a completed Sensor Grid board. Sensor Grid is a popular game where the user has to find the hazards using numeric hints that indicate how many hazards are directly adjacent (horizontally, vertically, diagonally) to a square.

TypeScript

Advanced~4h

Score a service scorecard. Service scorecards use the same scoring rules as the original bowling exercise, but the story is operational instead of a game. Keep track of the score across 10 windows and apply the same spare and strike bonuses.