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authorVincent Ambo <mail@tazj.in>2021-12-13T22·51+0300
committerVincent Ambo <mail@tazj.in>2021-12-13T23·15+0300
commit019f8fd2113df4c5247c3969c60fd4f0e08f91f7 (patch)
tree76a857f61aa88f62a30e854651e8439db77fd0ea /users/wpcarro/scratch/facebook/merging-ranges.py
parent464bbcb15c09813172c79820bcf526bb10cf4208 (diff)
parent6123e976928ca3d8d93f0b2006b10b5f659eb74d (diff)
subtree(users/wpcarro): docking briefcase at '24f5a642' r/3226
git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c09813172c79820bcf526bb10cf4208
git-subtree-split: 24f5a642af3aa1627bbff977f0a101907a02c69f
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789
Diffstat (limited to 'users/wpcarro/scratch/facebook/merging-ranges.py')
-rw-r--r--users/wpcarro/scratch/facebook/merging-ranges.py23
1 files changed, 23 insertions, 0 deletions
diff --git a/users/wpcarro/scratch/facebook/merging-ranges.py b/users/wpcarro/scratch/facebook/merging-ranges.py
new file mode 100644
index 000000000000..6da44572ee7e
--- /dev/null
+++ b/users/wpcarro/scratch/facebook/merging-ranges.py
@@ -0,0 +1,23 @@
+
+def merge(xs):
+    xs.sort()
+    result = xs[0:1]
+    for a, b in xs[1:]:
+        y, z = result[-1]
+        if a <= z:
+            result[-1] = (y, max(b, z))
+        else:
+            result.append((a, b))
+    return result
+
+inputs = [([(0,1),(3,5),(4,8),(10,12),(9,10)], [(0,1),(3,8),(9,12)]),
+          ([(1,2),(2,3)], [(1,3)]),
+          ([(1,5),(2,3)], [(1,5)]),
+          ([(1,10),(2,6),(3,5),(7,9)], [(1,10)]),
+          ]
+for x, expected in inputs:
+    result = merge(x)
+    print(x)
+    print(result)
+    assert result == expected
+    print("Success!")