[GitHub] [arrow-rs] askoa commented on a diff in pull request #3622: feat: take kernel for RunArray

["askoa (via GitHub)" <gi...@apache.org>]

askoa commented on code in PR #3622:
URL: https://github.com/apache/arrow-rs/pull/3622#discussion_r1096530297


##########
arrow-array/src/array/run_array.rs:
##########
@@ -143,6 +143,102 @@ impl<R: RunEndIndexType> RunArray<R> {
             values,
         })
     }
+
+    /// Returns index to the physical array for the given index to the logical array.
+    /// Performs a binary search on the run_ends array for the input index.
+    #[inline]
+    pub fn get_physical_index(&self, logical_index: usize) -> Option<usize> {

Review Comment:
   This function is moved from `TypedRunArray` to `RunArray` as the function has nothing to do with values.



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