Screen Swift candidates on real starter repos

Swift

Advanced~4h

Your team maintains an internal alert triage service. Each incoming alert carries five severity tags — tokens composed of a level indicator and a category code (e.g. 3♡ 10♢ 7♧ 8♤ A♢). The ranking rules for these tag sets follow standard poker hand rankings.

Swift

Starter~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…

Swift

Starter~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. When a HALT code is encountered, execution stops immediately.

Swift

Starter~2h

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.

Swift

Standard~3h

Your ops team schedules recurring deployment windows on a specific weekday of a given month. Implement a DeployWindow struct that, given a year and month, returns the date of the requested deployment window.

Swift

Starter~2h

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.

Swift

Starter~2h

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

Swift

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.

Swift

Standard~3h

Compile a standings table from match results for a small sports league. Given a list of match results, produce a formatted standings table. Each result line contains two team names and an outcome, separated by semicolons:

Swift

Standard~3h

Read the digits shown on an industrial meter's segment display. Each digit is represented as a 3-column x 4-row pattern of pipes, underscores, and spaces.

Swift

Starter~2h

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

Swift

Starter~2h

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

Swift

Starter~2h

Build a priority index that maps individual codes to their priority levels. Your team maintains an internal incident management tool that groups alert codes by priority level.

Swift

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:

Swift

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.

Swift

Advanced~4h

Arrange route segments into a circular path. You're given a collection of bidirectional route segments. Each segment connects two numbered stops — for example, a segment (2, 3) connects stop 2 to stop 3 and can be traversed in either direction.

Swift

Standard~3h

Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.

Swift

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.

Swift

Standard~3h

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.

Swift

Standard~3h

Your team maintains a mesh-network relay that transmits short text messages across low-bandwidth channels. Before transmission each message is woven — cleaned, arranged into a rectangular frame, then read column-by-column so characters are spread across time s…

Swift

Starter~2h

A support dashboard turns certain factors into status signals. The rules of status-signals are that if a given number:

Swift

Starter~2h

A social media post has gone viral. Every minute since it was published, the number of new views doubles compared to the previous minute.

Swift

Starter~2h

Implement a warehouse rover controller. A fulfillment center uses autonomous rovers to fetch items from shelving aisles. Before deploying a rover to the floor, the control software needs to verify that movement commands produce the expected outcomes.

Swift

Starter~2h

You are building a patrol planning tool for a network of watchtowers on an 8×8 observation grid.

Swift

Standard~3h

Implement a wave signal mixer that models two-component signals. In signal processing, a wave can be represented by two components: an in-phase component (real) and a quadrature component (imaginary).