Swift String Exercises: Create a new string made of a copy of the first two characters of a given string

Last update on December 21 2024 10:29:16 (UTC/GMT +8 hours)

Write a Swift program to create a new string made of a copy of the first two characters of a given string. If the given string is shorter than length 2, return whatever there is.

Pictorial Presentation:

Sample Solution:

Swift Code:

import Foundation
func first_two(_ input: String) -> String {
    let chars = input.characters
    let firstTwo = chars.prefix(2)
    
    return String(firstTwo)
}
print(first_two("Swift"))
print(first_two("Sw"))
print(first_two(""))
print(first_two("S"))

Sample Output:

Sw
Sw

S

Swift Programming Code Editor:

Improve this sample solution and post your code through Disqus

Previous: Write a Swift program to create a new string made of two copies of the first two characters of a given string. If the given string is shorter than length 2, return whatever there is.
Next: Write a Swift program to return the first half of a given string of even length.