Grokking the Coding Interview: Patterns for Coding Questions
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Problem Challenge 3: Employee Free Time (hard)
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Problem Statement

For ‘K’ employees, we are given a list of intervals representing each employee’s working hours. Our goal is to determine if there is a free interval which is common to all employees.

Example 1:

Input: Employee Working Hours=[[[1,3], [5,6]], [[2,3], [6,8]]]
Output: [3,5]
Explanation: All the employees are free between [3,5].

Example 2:

Input: Employee Working Hours=[[[1,3], [9,12]], [[2,4]], [[6,8]]]
Output: [4,6], [8,9]
Explanation: All employees are free between [4,6] and [8,9].

Example 3:

Input: Employee Working Hours=[[[1,3]], [[2,4]], [[3,5], [7,9]]]
Output: [5,7]
Explanation: All employees are free between [5,7].

Constraints:

  • 1 <= schedule.length , schedule[i].length <= 50
  • 0 <= schedule[i].start < schedule[i].end <= 10^8

Try it yourself

Try solving this question here:

Python3
Python3
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