Problemintro
First and last occurrence of a key
Also called key range in a sorted array.
Find the first and last index of a key that occurs repeatedly in a sorted array, using two binary searches.
Find the first and last index of a key that occurs repeatedly in a sorted array, using two binary searches.
About this page
The build computes these levels from the evidence in the repository. Each row says what the next level needs. Read what the levels mean.
| Ladder | Level | What the next level needs |
|---|---|---|
| Human proof | H0 no proof |
|
| Lean | L0 no Lean part |
|
| Visual | V0 none |
|
| Writing | W0 stub |
|
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