TheMuellenator/randomisation.swift

raphaelalmeidamartins · 2023-05-11T23:37:23Z

It's great to see all the different solutions for the problem. Here is mine:

func exercise() {
    let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"];
    
    //The number of letters in alphabet equals 26
    var randomAlphabet = alphabet;
    randomAlphabet.shuffle();
    let password = randomAlphabet[0..<6].joined();
    
    print(password);
}

Invader1999 · 2023-05-17T11:21:47Z

let alphabets = [
"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m",
"n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"
]
var password = ""
for _ in 0..<6{
var int = Int.random(in: 0..<alphabets.count)
password+=alphabets[int]

}

print(password)

eltonbrayner · 2023-06-09T21:04:35Z

func exercise(){
  let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
  
  //The number of letters in alphabet equals 26
  var password = ""
  
  while(password.count < 6){
      password += alphabet[Int.random(in: 0...25)]
  }
  
  print(password)
}

ghost · 2023-06-24T10:18:35Z

bro these comments are a hoot. You got dudes on here trying to show off by doing it a far more experienced way like this isn't a class for absolute beginners lol

Right lmao

Ven1884 · 2023-06-30T11:03:10Z

var alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
alphabet.shuffle()
let password = alphabet.prefix(6).joined()
print(password)

0ys0219 · 2023-08-23T15:21:00Z

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

let password = { () -> String in
var str = String()
for _ in 0...5 {
str.append(alphabet.randomElement()!)
}
return str
}()

print(password)

Danfelogar · 2023-09-02T14:44:58Z

func exercise() {

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

var randomPassword = ""
//The number of letters in alphabet equals 26
for i in 0...5 {
    randomPassword += alphabet[Int.random(in: i...alphabet.count)]
}

let password = randomPassword

print(password)

}

GangChenGoCode · 2023-11-22T22:16:54Z

let password = (0...5).map { _ in alphabet[Int.random(in:0...25)]}.joined()

leandroqros · 2023-11-25T13:37:29Z

Oi comunidade Brasileira 🇧🇷
A ideia que eu tive aqui foi criar seis variáveis e tirar um numero aleatorio de cada um na criação da variável.
Logo somar todas elas e adicionar na variável "senha"
Então imprimir a senha.

`

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

//The number of letters in alphabet equals 26

//Variaveis e asignaçao de letra
var letraUm = alphabet[Int.random(in: 0...25)]
var letraDois = alphabet[Int.random(in: 0...25)]
var letraTres = alphabet[Int.random(in: 0...25)]
var letraQuatro = alphabet[Int.random(in: 0...25)]
var letraCinco = alphabet[Int.random(in: 0...25)]
var letraSeis = alphabet[Int.random(in: 0...25)]

//Soma e asignaçao de senha
var senha = letraUm + letraDois + letraTres + letraQuatro + letraCinco + letraSeis

//Imprimir senha
print(senha)

`

marekrakus03 · 2023-12-02T11:10:02Z

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]


var randomCharacter1 = alphabet.randomElement()!
var randomCharacter2 = alphabet.randomElement()!
var randomCharacter3 = alphabet.randomElement()!
var randomCharacter4 = alphabet.randomElement()!
var randomCharacter5 = alphabet.randomElement()!
var randomCharacter6 = alphabet.randomElement()!

let password = randomCharacter1 + randomCharacter2 + randomCharacter3 + randomCharacter4 + randomCharacter5 + randomCharacter6

print(password)

//Went about it this way. I know it's a bit complicated but it works! While troubleshooting this I came across something called an "optional" which is a value you have to unwrap for it to be there. After searching on Stack Overflow for a while I found out you do that with a ! after the .randomElement. Have a nice day!

astraverse-ai · 2024-01-14T02:45:08Z

func exercise() {
let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
var password = ""
for _ in 0..<6 {
password += alphabet.randomElement()!
}
print(password)
}
//exercise()

kesselly4099 · 2024-01-15T07:43:52Z

let password = alphabet.randomElement()! + alphabet.randomElement()! + alphabet[2] + alphabet[3] + alphabet[4] + alphabet[5]

// you can chose to use the randomElement of you can call single character

FadhilMustari · 2024-01-24T07:31:03Z

func exercise() {
let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

//The number of letters in alphabet equals 26
var password: String = ""
for i in 1...6{
    password += alphabet[Int.random(in: 0...25)]
}
print(password)

}

Nurreles · 2024-02-07T19:05:10Z

let alphabetArray = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"]

var password = ""
for l in 0..<6 {
password += alphabetArray.randomElement() ?? ""
}

print(password)

uncommon-design · 2024-02-08T12:51:49Z

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

var password = alphabet.randomElement()!+alphabet.randomElement()!+alphabet.randomElement()!+alphabet.randomElement()!+alphabet.randomElement()!+alphabet.randomElement()!

print(password)

Cyrille-Dakhlia · 2024-03-27T07:05:24Z

I really know I am late, I've all the top solutions on this page and I really don't get what does "!" mean in alphabet.rendomElemnet()! I've been looking all over internet (in my capacity) but still haven't found a reasonable solution. I hope you guys can help me on this . Thanks

Types, say String or Int, have their variant type called Optional (Optional String written in code as String?, Optional Int written in code as Int?).
A String? can either be a String or a null value (called nil in Swift) that means "nothing".

Why do we have that? Let's say you have a program where you can define nicknames for your users, you could give it the String? type as not everybody necessarily have a nickname, so the value of a nickname variable could be either a String, either nothing (nil) if no nickname would have been defined for that user.

Now let's say you have the following function that greets your users using their nickname

func greet(personNickname: String) -> String {
    let greeting = "Hello, " + personNickname + "."
    return greeting
}

It expects the nickname as a parameter being a String and not a String?. To call your function, you could not do:

print(greet(user.nickname))

since nickname is a String? and the function expects a String, you would have a compilation error.
To effectively pass a String to your function, you would use the ! symbol that says: "I know there's a value in there, trust me and act as if it was not 'Optional'." :

print(greet(user.nickname!))

Looking at the randomElement method of the Array class in the documentation, we can see that whenever we call it, it returns a value of the type Element?:

func randomElement() -> Self.Element?

Our array alphabet being an array of String elements, calling randomElement on it would return the type String?.

Since our password is of type String and not String?, it should be composed of Strings, so using the randomElement method, we should transform the String? values into String ones by using the ! symbol/operator.

YashDjsonDookun · 2024-04-01T13:30:51Z

let alphabet = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"];
    var password = "";
    for i in 0...5 {
        password += alphabet.randomElement() ?? "";
    }
    print(password);

Sirio2022 · 2024-04-23T15:26:33Z

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

//The number of letters in alphabet equals 26

var a = alphabet.randomElement()
var b = alphabet.randomElement()
var c = alphabet.randomElement()
var d = alphabet.randomElement()
var e = alphabet.randomElement()
var f = alphabet.randomElement()

var result = ""
result.append(a!)
result.append(b!)
result.append(c!)
result.append(d!)
result.append(e!)
result.append(f!)

let password = result

print(password)

h40hm4ru · 2024-05-07T14:39:10Z

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

var password = ""
for _ in 1 ... 6 {
    password += alphabet.randomElement()!
}

print(password)

ParsaMotiallah · 2024-05-28T00:38:58Z

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

let randomElements = Array(alphabet.shuffled().prefix(6))

let password = randomElements.joined()
print (password)

toporusan · 2024-06-04T17:39:39Z

let alphabet = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"]
var password = ""
while password.count != 6 {
password = password + alphabet[Int.random(in: 0 ... alphabet.count - 1)]
}
print(password)

vovahvfr · 2024-08-16T09:13:46Z

func exercise() {
let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"];

let password = alphabet.shuffled().prefix(6).joined()

print(password);

}

dangduong0127 · 2024-10-27T07:27:22Z

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"];

let a = alphabet.randomElement() ?? "";
let b = alphabet.randomElement() ?? "";
let c = alphabet.randomElement() ?? "";
let d = alphabet.randomElement() ?? "";
let e = alphabet.randomElement() ?? "";
let f = alphabet.randomElement() ?? "";
let password = a + b + c + d + e + f;

print(password);

5wift-Hacker · 2024-10-30T07:02:23Z

Hi everyone! A lot of people here using more advanced techniques to solve the challenge. It's interesting to see all the ways it can be done. I'm glad I was also exactly like the official solution to show I'm on track!

KayzMan · 2024-12-03T08:30:23Z

let alphabet = [
"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p",
"q", "r", "s", "t", "u", "v", "w", "x", "y", "z"
]

// The number of letters in alphabet equals 26

// a password of six random characters
var password: String = " "

for i in 1...6 {
password += alphabet.randomElement() ?? ""
}

print(password)

micko4435 · 2025-01-01T01:11:12Z

func exercise() {
let alphabet = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"]

// Shuffle the alphabet and pick the first 6 letters
let shuffledAlphabet = alphabet.shuffled()
let password = shuffledAlphabet.prefix(6).joined()

print(password)

}

pbsi-00 · 2025-01-27T18:59:26Z

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
//The number of letters in alphabet equals 26

let password = alphabet.randomElement()! + alphabet.randomElement()! + alphabet.randomElement()! + alphabet.randomElement()! + alphabet.randomElement()! + alphabet.randomElement()!

print(password)
The '!' on my code refers to force unwrapping optionals. Basically what optionals are saying is, "There is a value and it is [this value] or there isn't a value at all." If there wasn't a value at all, it would be 'nil'. if tried to run with randomElement alone the code would crash as will keep running and never find a solution.

Thank you for explaining this one. I am actually trying to use the alphabet.randomElement() but I was getting compiler error -- took too long to compile. Did not know you would need the '!'.

EmmanuelLwele · 2025-03-24T11:41:21Z

func exercise() {
let alphabet = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"]

let password = (1...6).map { _ in alphabet.randomElement()! }.joined()

print(password)

}

HeHertZ · 2025-08-28T06:21:18Z

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
//The number of letters in alphabet equals 26

let password = (0..<6).compactMap { _ in
    alphabet.randomElement()}.joined()

print(password)

elbarbaryy · 2025-11-01T11:14:46Z

`func exercise() {

let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

var password = ""

for _ in 1...6{
    password += alphabet.randomElement()!
}

print(password)

}`




	let alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]

	//The number of letters in alphabet equals 26

	var password = alphabet[Int.random(in: 0...25)] + alphabet[Int.random(in: 0...25)] + alphabet[Int.random(in: 0...25)] + alphabet[Int.random(in: 0...25)] + alphabet[Int.random(in: 0...25)] + alphabet[Int.random(in: 0...25)]

	print(password)

TheMuellenator/randomisation.swift

raphaelalmeidamartins commented May 11, 2023

Uh oh!

Invader1999 commented May 17, 2023

Uh oh!

eltonbrayner commented Jun 9, 2023 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

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ghost commented Jun 24, 2023

Uh oh!

Ven1884 commented Jun 30, 2023

Uh oh!

0ys0219 commented Aug 23, 2023

Uh oh!

Danfelogar commented Sep 2, 2023

Uh oh!

GangChenGoCode commented Nov 22, 2023

Uh oh!

leandroqros commented Nov 25, 2023

Uh oh!

marekrakus03 commented Dec 2, 2023

Uh oh!

astraverse-ai commented Jan 14, 2024

Uh oh!

kesselly4099 commented Jan 15, 2024

Uh oh!

FadhilMustari commented Jan 24, 2024

Uh oh!

Nurreles commented Feb 7, 2024 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

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uncommon-design commented Feb 8, 2024

Uh oh!

Cyrille-Dakhlia commented Mar 27, 2024

Uh oh!

YashDjsonDookun commented Apr 1, 2024

Uh oh!

Sirio2022 commented Apr 23, 2024

Uh oh!

h40hm4ru commented May 7, 2024

Uh oh!

ParsaMotiallah commented May 28, 2024

Uh oh!

toporusan commented Jun 4, 2024

Uh oh!

vovahvfr commented Aug 16, 2024

Uh oh!

dangduong0127 commented Oct 27, 2024 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

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5wift-Hacker commented Oct 30, 2024

Uh oh!

KayzMan commented Dec 3, 2024

Uh oh!

micko4435 commented Jan 1, 2025

Uh oh!

pbsi-00 commented Jan 27, 2025

Uh oh!

EmmanuelLwele commented Mar 24, 2025

Uh oh!

HeHertZ commented Aug 28, 2025

Uh oh!

elbarbaryy commented Nov 1, 2025

Uh oh!

eltonbrayner commented Jun 9, 2023 •

edited

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Nurreles commented Feb 7, 2024 •

edited

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dangduong0127 commented Oct 27, 2024 •

edited

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