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  1. Prepare
  2. Ruby
  3. Arrays & Hashes
  4. Ruby Array - Selection
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Ruby Array - Selection

  • h1900520140067
     + 0 comments
    def select_arr(arr)
  # select and return all odd numbers from the Array variable `arr`
    return arr.select{|a| (a%2 != 0)}
end

def reject_arr(arr)
  # reject all elements which are divisible by 3
    return arr.delete_if{|a| (a%3 == 0)}
end

def delete_arr(arr)
  # delete all negative elements
    return arr.delete_if{|a| a < 0}
end

def keep_arr(arr)
  # keep all non negative elements ( >= 0)
    return arr.keep_if{|a| a >= 0}
end