swapAt(_:_:)
Exchanges the values at the specified indices of the collection.
Declaration
mutating func swapAt(_ i: Self.Index, _ j: Self.Index)Parameters
- i:
The index of the first value to swap.
- j:
The index of the second value to swap.
Discussion
Both parameters must be valid indices of the collection that are not equal to endIndex. Calling swapAt(_:_:) with the same index as both i and j has no effect.