How do I print "hello world" without using stings, numbers, regex.

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Recently, I have been solving different tasks at codewars.com to craft my javascript skills. While, usually I try really hard to find a solution myself before asking somebody`s help, this time I am really confused.
I have been asked to print "Hello world" without using:
- strings,
- numbers,
- regular exps,
- functions,
- object keys.
Is this really possible? Can I actually do it?
P.S I am sure there is a way to do it but I just can`t think of any.

What I have tried:

I found this article but it only tells a way to use numbers without actually using numbers, is there a similar way to do the same with letters?
Brainfuck beware: JavaScript is after you! | Patricio Palladino[^]

Posted 5-Aug-16 10:07am

AlexLearne

Updated 5-Aug-16 18:44pm

Patrice T

v2

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Comments

George Jonsson 5-Aug-16 20:57pm

Can you use characters and arrays?

AlexLearne 6-Aug-16 2:28am

The thing is no, I think I found a similar solution and alerts "Hello world!" and I would like it to return "Hello world". Look at this code, do you have any idea how I can correct it?

a=Array();
a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+
a)[!+a+!+a+!+a]+(!!a+a)[+!+a]][(a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!
+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]]+a)[!+a+!+a+!+a]+(!!a+a[(!a+a
)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!
!a+a)[+!+a]])[+!+a+[+a]]+(a[a]+a)[+!+a]+(!a+a)[!+a+!+a+!+a]+(!!a+a)[+a]+(!!a+a)[
+!+a]+(a[a]+a)[+a]+(a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[
+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]]+a)[!+a+!+a+!+a]+(!!a+a)[+a]+(!!a+a[(!a+a
)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!
!a+a)[+!+a]])[+!+a+[+a]]+(!!a+a)[+!+a]]((!a+a)[+!+a]+(!a+a)[!+a+!+a]+(!!a+a)[!+a
+!+a+!+a]+(!!a+a)[+!+a]+(!!a+a)[+a]+(!a+a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+
a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]])[!+a+!+a+[+a]]+(a+a)
[(!a+a)[+a]+(!!a+a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]
+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]])[+!+a+[+a]]+(a[a]+a)[+!+a]+(!!a+a)[+a]+(a[(
!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a
]+(!!a+a)[+!+a]]+a)[!+a+!+a+!+a]+(!!a+a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)
[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]])[+!+a+[+a]]+(!a+a)[!+a
+!+a]+(!!a+a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+
a)[!+a+!+a+!+a]+(!!a+a)[+!+a]])[+!+a+[+a]]+(!!a+a)[+!+a]]()[+!+a+[!+a+!+a]]+a[(!
a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]
+(!!a+a)[+!+a]][(a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]
+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]]+a)[!+a+!+a+!+a]+(!!a+a[(!a+a)[+a]+([!a]+a[a
])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]])[+
!+a+[+a]]+(a[a]+a)[+!+a]+(!a+a)[!+a+!+a+!+a]+(!!a+a)[+a]+(!!a+a)[+!+a]+(a[a]+a)[
+a]+(a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a
+!+a+!+a]+(!!a+a)[+!+a]]+a)[!+a+!+a+!+a]+(!!a+a)[+a]+(!!a+a[(!a+a)[+a]+([!a]+a[a
])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]])[+
!+a+[+a]]+(!!a+a)[+!+a]]((!!a+a)[+!+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+a]+(a[a]+a)
[+a]+(!!a+a)[+!+a]+(a[a]+a)[+!+a]+(+[!a]+a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a
+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]])[+!+a+[+!+a]]+(a[a]
+a)[+a]+(a[a]+a)[+!+a]+(!!a+a)[!+a+!+a+!+a]+(!a+a)[!+a+!+a+!+a]+(a[(!a+a)[+a]+([
!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!
+a]]+a)[!+a+!+a+!+a]+(!a+a)[+!+a]+(+(!+a+!+a+[+!+a]+[+!+a]))[(!!a+a)[+a]+(!!a+a[
(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+
a]+(!!a+a)[+!+a]])[+!+a+[+a]]+(+!a+(a+a)[(a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!
a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]]+a)[!+a+!+a+!+a]+(!
!a+a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!
+a+!+a]+(!!a+a)[+!+a]])[+!+a+[+a]]+(a[a]+a)[+!+a]+(!a+a)[!+a+!+a+!+a]+(!!a+a)[+a
]+(!!a+a)[+!+a]+(a[a]+a)[+a]+(a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a
]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]]+a)[!+a+!+a+!+a]+(!!a+a)[+a]+(!
!a+a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!
+a+!+a]+(!!a+a)[+!+a]])[+!+a+[+a]]+(!!a+a)[+!+a]])[+!+a+[+a]]+(!!a+a)[+a]+(!!a+a
)[+!+a]+([!a]+a[a])[+!+a+[+a]]+(a[a]+a)[+!+a]+(+!a+[!a]+(a+a)[(a[(!a+a)[+a]+([!a
]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a
]]+a)[!+a+!+a+!+a]+(!!a+a[(!a+a)[+a]+([!a]+a[a])[+!+a+[+a]]+(!a+a)[!+a+!+a]+(!!a
+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]])[+!+a+[+a]]+(a[a]+a)[+!+a]+(!a+a)[!+
a+!+a+!+a]+(!!a+a)[+a]+(!!a+a)[+!+a]+(a[a]+a)[+a]+(a[(!a+a)[+a]+([!a]+a[a])[+!+a
+[+a]]+(!a+a)[!+a+!+a]+(!!a+a)[+a]+(!!a+a)[!+a+!+a+!+a]+(!!a+a)[+!+a]]+a)[!+a+!+
a+!+a]

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Mehdi Gholam · Answer 1 · 2016-08-05T18:44:00

Solution 1

Try this:

JavaScript

var s = ['h','e','l','l','o',' ','w','o','r','l','d'];
console.log(s.join(''));

Posted 5-Aug-16 18:44pm

Mehdi Gholam

Comments

AlexLearne 6-Aug-16 2:23am

Thank you for your answer but you are using strings inside of your array and unfortunately that is not allowed as well as functions)

Mehdi Gholam 6-Aug-16 2:26am

Use String.fromCharCode() and convert the letters to numbers first.

AlexLearne 6-Aug-16 2:53am

Again, functions are not allowed. I posted an example above that alerts "Hello World", can I do the same using return? Take a look)