---
title: max()
framework: swift
role: symbol
role_heading: Instance Method
path: swift/string/max()
---

# max()

Returns the maximum element in the sequence.

## Declaration

```swift
@warn_unqualified_access func max() -> Self.Element?
```

## Return Value

Return Value The sequence’s maximum element. If the sequence has no elements, returns nil.

## Discussion

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)" note: O(n), where n is the length of the sequence.

## See Also

### Finding Characters

- [contains(_:)](swift/string/contains(_:).md)
- [allSatisfy(_:)](swift/string/allsatisfy(_:).md)
- [contains(where:)](swift/string/contains(where:).md)
- [first(where:)](swift/string/first(where:).md)
- [firstIndex(of:)](swift/string/firstindex(of:).md)
- [firstIndex(where:)](swift/string/firstindex(where:).md)
- [last(where:)](swift/string/last(where:).md)
- [lastIndex(of:)](swift/string/lastindex(of:).md)
- [lastIndex(where:)](swift/string/lastindex(where:).md)
- [max(_:_:)](swift/string/max(_:_:).md)
- [max(by:)](swift/string/max(by:).md)
- [min()](swift/string/min().md)
- [min(_:_:)](swift/string/min(_:_:).md)
- [min(by:)](swift/string/min(by:).md)