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g0401_0500.s0435_non_overlapping_intervals.readme.md Maven / Gradle / Ivy

435\. Non-overlapping Intervals

Medium

Given an array of intervals `intervals` where intervals[i] = [starti, endi], return _the minimum number of intervals you need to remove to make the rest of the intervals non-overlapping_.

**Example 1:**

**Input:** intervals = [[1,2],[2,3],[3,4],[1,3]]

**Output:** 1

**Explanation:** [1,3] can be removed and the rest of the intervals are non-overlapping. 

**Example 2:**

**Input:** intervals = [[1,2],[1,2],[1,2]]

**Output:** 2

**Explanation:** You need to remove two [1,2] to make the rest of the intervals non-overlapping. 

**Example 3:**

**Input:** intervals = [[1,2],[2,3]]

**Output:** 0

**Explanation:** You don't need to remove any of the intervals since they're already non-overlapping. 

**Constraints:**

*   1 <= intervals.length <= 105
*   `intervals[i].length == 2`
*   -5 * 104 <= starti < endi <= 5 * 104