Doctor Appointment Scheduling System | Dataford Interview Questions

Build a doctor appointment scheduling system: doctor can add availability (datetimes), patient can schedule an appointment, schedule a recurring appointment, cancel an appointment, and given a doctor retrieve available blocks of time by interval (e.g. 30-minute Calendly-style slots).

Asked in the technical phone screen stage. 60-minute live coding (Python).

Implement schedule_appointments(operations). Each operation is a dictionary with an action. Datetimes are ISO strings and use half-open intervals [start, end). Return one result per operation: availability returns true, scheduling returns true or false, recurring scheduling returns created IDs or [], cancellation returns true or false, and availability queries return [start, end] slot pairs.

Constraints

1 <= len(operations) <= 10^4
Datetime strings are valid ISO 8601 values in one consistent timezone
Every interval has start < end
slot_minutes is a positive integer
Recurring appointments use occurrences >= 1 and interval_days >= 1
Recurring scheduling is atomic

Function Signature

def schedule_appointments(operations):

Your question is Doctor Appointment Scheduling System. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Asked in the technical phone screen stage. 60-minute live coding (Python).

Constraints

1 <= len(operations) <= 10^4
Datetime strings are valid ISO 8601 values in one consistent timezone
Every interval has start < end
slot_minutes is a positive integer
Recurring appointments use occurrences >= 1 and interval_days >= 1
Recurring scheduling is atomic

Function Signature

def schedule_appointments(operations):

Your question is Doctor Appointment Scheduling System. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.