Question

How to get the index of the last instance of a character in a string with Swift

Answer 1

import Foundation

let s = "Swift is a programming language for iOS, iPadOS, macOS"
let charToFind: Character = "O"

if let index = s.firstIndex(of: charToFind) {
    let position = s.distance(from: s.startIndex, to: index)
    print("The first occurrence of '\(charToFind)' is at index \(position)")
} else {
    print("'\(charToFind)' not found in the string")
}



/*
run:

The first occurrence of 'O' is at index 37

*/

 

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