Swift String Exercises: Move the last two characters of a given string to the start

Last update on December 21 2024 10:29:09 (UTC/GMT +8 hours)

Write a Swift program to move the last two characters of a given string to the start. The given string length must be at least 2.

Pictorial Presentation:

Sample Solution:

Swift Code:

func last_to_first(_ str1: String) -> String {
    var chars = str1.characters
    let last_char = chars.removeLast()
    let rest_part = chars.removeLast()
    chars.insert(last_char, at: chars.startIndex)
    chars.insert(rest_part, at: chars.startIndex)
    
    return String(chars)
}
print(last_to_first("Swift"))
print(last_to_first("Python"))

Sample Output:

ftSwi
onPyth

Swift Programming Code Editor:

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