Ace the Rust Interview

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beginner · order 27

Two mutable slices with split_at_mut

borrow-excl-02Related book chapters: 6 (optional — this page is complete on its own)split_at_mut

Slug: borrow-excl-02 · Paired reading: Chapter 6

Prompt

Implement fn swap_halves(a: &mut [i32]) that swaps a[0] with a[mid] where mid = a.len()/2, for len >= 2. Use split_at_mut — do not index twice with simultaneous &mut from the same slice.