Swift Basic Programming Exercise: Create a string taking characters at indexes 0, 2, 4, 6, 8, .. from a given string

Last update on December 21 2024 10:30:11 (UTC/GMT +8 hours)

Write a Swift program to create a string taking characters at indexes 0, 2, 4, 6, 8, .. from a given string.

Pictorial Presentation:

Sample Solution:

Swift Code:

func chars_string(_ input: String) -> String {
    var new_str = input
    var count = 1
     while count < (new_str.characters.count) {
        new_str.remove(at: new_str.index(new_str.startIndex, offsetBy: count))
        count += 1
    }
       return new_str
}
print(chars_string("abcdefgh"))
print(chars_string("abcdefg"))
print(chars_string("abcdef"))

Sample Output:

aceg
aceg
ace

Swift Programming Code Editor:

Improve this sample solution and post your code through Disqus

Previous: Write a Swift program to create a new string where all the character "a" have been removed except the first and last positions.
Next: Write a Swift program to count the number of times that two 7's are next to each other in a given array of integers.