def sort(arr)
    n = arr.length-1
    for i in 0..n-1
      min = arr[i]
      pos = i
      for j in i + 1..n
          if arr[j] < min
            min = arr[j]
            pos = j
          end
      end
      aux = arr[pos]
      arr[pos] = arr[i]
      arr[i] = aux
    end
end
def distinct(arr)
    x = [1,-2,-2,3,4,5,5,-2,1,10,20,30,10]
    y = []
    k = 0
    sort(x)
    k = 0
    y[k] = x[k]
    for i in 0..x.length-2
        if x[i] != x[i+1]
           k += 1
           y[k] = x[i+1]
        end
    end
    print y
end
def main
    arr = [1,-2,-2,3,4,5,5,-2,1,10,20,30,10]
    n = arr.length-1
    for i in 0..n-1
        if arr[i] != 0
          print arr[i], " "
          for j in i + 1..n
              if arr[i] == arr[j]
                 arr[j] = 0
              end
          end
        end
    end
end
main
distinct([])
 

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