# max() Returns the maximum element in the sequence. ``` @warn_unqualified_access func max() -> Self.Element? ``` ## Return Value The sequence’s maximum element. If the sequence has no elements, returns `nil`. ## Discussion This example finds the largest value in an array of height measurements. ``` let heights = [67.5, 65.7, 64.3, 61.1, 58.5, 60.3, 64.9] let greatestHeight = heights.max() print(greatestHeight) // Prints "Optional(67.5)" ``` > Complexity: O(*n*), where *n* is the length of the sequence. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)