Problem

Given an array of intervals and returns the minimum number of intervals to remove in order to eliminate all overlapping intervals.

Each interval is represented by a start and end time.

Examples

minIntervalRemovals([[1, 3], [2, 4], [3, 5]])
// return 1
// Why? We can remove interval [2, 4]

minIntervalRemovals([[1, 10], [2, 6], [3, 8], [5, 7]])
// return 3
// Why? All intervals overlap with [1, 10]