Generate random numbers

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1

I have the following problem:

  • I need to generate a random number between 1 and 6
  • Assign to a array of numbers if this new number is not contained in array
  • If contained, generate again. Do this process until the array number have 6 numbers
array ruby-on-rails ruby random

  • don’t understand the last case, don’t you want them to repeat themselves if they run again? @Danilotiagothaisantos

  • In this case, it is just an array of numbers that do not repeat, I will use the function (1.6). to_a.shuffle

  • Great, then Guigs' answer meets you :), mark as sure later if it helped you

  • Has any answer served you, if yes accept it as a solution to your problem ???

2 answers

6

You are already thinking about how to implement in procedural form. From what I understand you want an array with the numbers 1 to 6 in random order. For this use the method Array#shuffle.

(1..6).to_a.shuffle
=> [6, 3, 5, 4, 1, 2]

1

To generate random numbers use the method rand, it generates a decimal number from 0.0 to 1.0 if used without arguments.

To use with integers pass an integer parameter this way:

rand NUM_INT

This will generate a number from 0 up to NUM_INT - 1.

You can also generate random numbers in a certain range!

For example, to have numbers between 50 and 100:

rand 50..101

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