Leetcode Problem 2580. Count Ways to Group Overlapping Ranges

2580. Count Ways to Group Overlapping Ranges

Leetcode Solutions

Merge Overlapping Intervals and Count

  1. Sort the ranges based on their start times.
  2. Initialize a variable mergedCount to 1, representing the count of merged intervals.
  3. Initialize a variable maxEnd to the end of the first interval.
  4. Iterate through the sorted ranges starting from the second interval.
  5. For each interval, check if it overlaps with the interval represented by maxEnd.
  6. If it overlaps, update maxEnd to the maximum of its current value and the end of the current interval.
  7. If it does not overlap, increment mergedCount and update maxEnd to the end of the current interval.
  8. The answer is 2 raised to the power of mergedCount, modulo 10^9 + 7.
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Dynamic Programming with Overlapping Check

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