Swift Array min()

In this tutorial, we will learn about the Swift array min() method with the help of examples.

The min() method returns the minimum element in the array.


var numbers = [9, 34, 11, -4, 27]

// find the smallest number print(numbers.min()!)
// Output: -4

min() Syntax

The syntax of the array min() method is:


Here, array is an object of the Array class.

min() Parameters

The min() method doesn't take any parameters.

min() Return Values

  • returns the minimum element from the array

Note: The min() method returns an optional value, so we need to unwrap it. There are different techniques to unwrap optionals. To learn more about optionals, visit Swift Optionals.

Example 1: Swift Array min()

// create an array of integers
var integers = [2, 4, 6, 8, 10]

// create an array of floating-point number
var decimals = [1.2, 3.4, 7.5, 9.6]

// find the smallest element in integers array print(integers.min())
// find the smallest element in decimals array print(decimals.min()!)



In the above example, we have created two arrays named integers and decimals. Notice the following:

  • integers.min() - since we have not unwrapped the optional, the method returns Optional(2)
  • decimals.min()! - since we have used ! to force unwrap the optional, the method returns 1.2.

To learn more about forced unwrapping, visit Optional Forced Unwrapping.

Example 2: Find Smallest String Using min()

var languages = ["Swift", "Python", "Java"]

// find the smallest string print(languages.min()!)



Here, the elements in the languages array are strings, so the min() method returns the smallest element (alphabetically).

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