swap3

Provides utility functions for simultaneously swapping three values by rotating them either left (abc → bca) or right (abc → cab). These functions can come in handy e.g. when rotating elements of a binary tree in list representation.

The provided functions work on arbitrary types and do not require the type to be Clone, Copy or Default.

Examples

For individual references, the swap3_bca (rotate left) and swap3_cab (rotate right) functions are available:

```rust fn swap3_bca() { let mut a = 10; let mut b = 20; let mut c = 30;

swap3::swap3_bca(&mut a, &mut b, &mut c);
assert_eq!([a, b, c], [20, 30, 10]);

} ```

For slices, the swap3_bca_slice and swap3_cab_slice functions can be used:

rust fn swap3_bca() { let mut vec = vec![10, 20, 30, 40, 50, 60]; swap3::swap3_bca_slice(&mut vec, 0, 1, 4); assert_eq!(vec, &[30, 50, 30, 40, 10, 60]); }