How to Filter Elements of an Array based on a Condition in Swift


How to Filter Elements of an Array based on a Condition in Swift ?

Answer

To filter elements of an array based on a condition in Swift, you can use the filter method.



✐ Examples

1 Filter Even Numbers

In this example,

  1. We have an array named numbers containing integers.
  2. We use the filter method with a closure to filter out even numbers.
  3. We print the filtered array to demonstrate the filtering.

Swift Program

let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
let evenNumbers = numbers.filter { $0 % 2 == 0 }
print("Even Numbers:", evenNumbers)

Output

Even Numbers: [2, 4, 6, 8, 10]

2 Filter Strings by Length

In this example,

  1. We have an array named words containing strings.
  2. We use the filter method with a closure to filter strings by their length.
  3. We print the filtered array to demonstrate the filtering.

Swift Program

let words = ["apple", "banana", "cherry", "date", "fig"]
let filteredWords = words.filter { $0.count > 5 }
print("Filtered Words:", filteredWords)

Output

Filtered Words: ["banana", "cherry"]

Summary

In this tutorial, we learned How to Filter Elements of an Array based on a Condition in Swift language with well detailed examples.




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