clanker: test-veet (run)

problems/medium/merge-intervals/solution.py

@@ -0,0 +1,35 @@
+"""
+Merge Intervals
+
+You're building a calendar app that needs to consolidate overlapping
+meetings. Given a list of time intervals represented as [start, end]
+pairs, merge all overlapping intervals and return the resulting list
+of non-overlapping intervals sorted by start time.
+
+Two intervals overlap if one starts before the other ends.
+
+Example 1:
+    Input: intervals = [[1, 3], [2, 6], [8, 10], [15, 18]]
+    Output: [[1, 6], [8, 10], [15, 18]]
+    Explanation: [1, 3] and [2, 6] overlap, merged into [1, 6]
+
+Example 2:
+    Input: intervals = [[1, 4], [4, 5]]
+    Output: [[1, 5]]
+    Explanation: Intervals sharing an endpoint are considered overlapping
+
+Example 3:
+    Input: intervals = [[1, 4], [0, 4]]
+    Output: [[0, 4]]
+    Explanation: Input is not necessarily sorted
+
+Constraints:
+    - 0 <= len(intervals) <= 10^4
+    - Each interval is [start, end] where start <= end
+    - Start and end are non-negative integers
+"""
+
+
+def merge(intervals: list[list[int]]) -> list[list[int]]:
+    """Return a list of merged non-overlapping intervals sorted by start."""
+    pass  # Your implementation here

problems/medium/merge-intervals/tests.py

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+"""Tests for merge-intervals."""
+import pytest
+from solution import merge
+
+
+class TestBasicCases:
+    """Test basic functionality with typical inputs."""
+
+    def test_example_one(self):
+        """Test first example from problem description."""
+        assert merge([[1, 3], [2, 6], [8, 10], [15, 18]]) == [[1, 6], [8, 10], [15, 18]]
+
+    def test_example_two(self):
+        """Test second example from problem description."""
+        assert merge([[1, 4], [4, 5]]) == [[1, 5]]
+
+    def test_example_three(self):
+        """Test third example with unsorted input."""
+        assert merge([[1, 4], [0, 4]]) == [[0, 4]]
+
+    def test_no_overlaps(self):
+        """Test intervals with no overlaps."""
+        assert merge([[1, 2], [5, 6], [9, 10]]) == [[1, 2], [5, 6], [9, 10]]
+
+
+class TestEdgeCases:
+    """Test edge cases and boundary conditions."""
+
+    def test_empty_list(self):
+        """Test with no intervals."""
+        assert merge([]) == []
+
+    def test_single_interval(self):
+        """Test with exactly one interval."""
+        assert merge([[1, 5]]) == [[1, 5]]
+
+    def test_all_overlapping(self):
+        """Test when all intervals merge into one."""
+        assert merge([[1, 4], [2, 5], [3, 6]]) == [[1, 6]]
+
+    def test_contained_interval(self):
+        """Test when one interval is fully inside another."""
+        assert merge([[1, 10], [3, 5]]) == [[1, 10]]
+
+    def test_unsorted_input(self):
+        """Test with input not sorted by start time."""
+        assert merge([[5, 6], [1, 3], [2, 4]]) == [[1, 4], [5, 6]]