How to get the Index of Specified Element in an Array in Swift

How to get the Index of Specified Element in an Array in Swift ?

Answer

To get the index of a specified element in an array in Swift, you can use the firstIndex(of:) method.


✐ Examples

1 Index of Element 30 in Integer Array

In this example,

  1. We create an integer array arr with values 10, 20, 30, 40, 50.
  2. We use the firstIndex(of:) method to find the index of 30 in the array.
  3. If the element is found, we print its index.
  4. If the element is not found, we print a message indicating it's not in the array.

Swift Program

let arr = [10, 20, 30, 40, 50]
let specifiedElement = 30

if let index = arr.firstIndex(of: specifiedElement) {
    print("Index of specified element \(specifiedElement) is: \(index)")
} else {
    print("Specified element not found in the array")
}

Output

Index of specified element 30 is: 2

2 Index of Element 60 in Integer Array

In this example,

  1. We create an integer array arr with values 10, 20, 30, 40, 50.
  2. We use the firstIndex(of:) method to find the index of 60 in the array.
  3. If the element is found, we print its index.
  4. If the element is not found, we print a message indicating it's not in the array.

Swift Program

let arr = [10, 20, 30, 40, 50]
let specifiedElement = 60

if let index = arr.firstIndex(of: specifiedElement) {
    print("Index of specified element \(specifiedElement) is: \(index)")
} else {
    print("Specified element not found in the array")
}

Output

Specified element not found in the array

Summary

In this tutorial, we learned How to get the Index of Specified Element in an Array in Swift language with well detailed examples.


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