Merging Overlapping Shifts | Dataford Interview Questions

Write a function to merge overlapping shifts for a group of Site Mechanical Engineers working across different time zones at A S S E M B L E D.

Each shift contains ISO 8601 start and end timestamps with UTC offsets. Return the union of all shifts as sorted, non-overlapping UTC intervals, merging shifts that overlap or touch. The input is a list of objects, and the output is a list of [start, end] timestamp pairs.

Constraints

1 <= len(shifts) <= 5000
Every shift contains valid ISO 8601 start and end timestamps with explicit UTC offsets
Each shift satisfies start <= end
Return intervals in chronological UTC order
Overlapping and touching intervals must be merged

Function Signature

def merge_shifts(shifts):

Your question is Merging Overlapping Shifts. Start with the requirements in the Question tab.

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Problem

Write a function to merge overlapping shifts for a group of Site Mechanical Engineers working across different time zones at A S S E M B L E D.

Constraints

1 <= len(shifts) <= 5000
Every shift contains valid ISO 8601 start and end timestamps with explicit UTC offsets
Each shift satisfies start <= end
Return intervals in chronological UTC order
Overlapping and touching intervals must be merged

Function Signature

def merge_shifts(shifts):

Your question is Merging Overlapping Shifts. 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.