(Ruby) Lottery Numbers, without duplicates

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I got the task to create a lottery program which outputs 6 random numbers from 1 to 49 without duplicates. I'm not allowed to use the shuffle-Method of Arrays and as a tip I recieved that I should create an array with 49 entries and "shuffle" the numbers. I thought about this tip but it's not really helping.

This is what I got till now, I hope someone understands my code. I'm still stuck in a more Java way of writing than in ruby.

#Generating the Array
LNum = Array.new(6)
i = 0
while (i == 0)
    LNum << [rand(1...49), rand(1...49), rand(1...49), rand(1...49), rand(1...49), rand(1...49)]
    if (LNum.uniq.length == LNum.length)
        i += 1
    end
end
#Output
puts 'Todays lottery numbers are'
LNum.each { |a| print a, " " }

I picked up the uniq-Methode, because I read that it could elimante doubles that way, but I don't think it works in this case. In previous versions of my code I got a Error because I was trying to override the allready created array, I understand why Ruby is giving me an error but I have no clue how to do it in another way.

I hope someone is able to provide me some code-pieces, methods, solutions or tips for this task, thanks in advance.

asked 32 secs ago

Charles Nough

1

(Ruby) Lottery Numbers, without duplicates