Question

How to print duplicates from array in Lua

Answer 1

arr = {5, 6, 3, 1, 1, 5, 5, 1, 7}
exist = {}

for i = 1, #arr do
   if not exist[arr[i]] then
      io.write(arr[i] .. ' ')
      exist[arr[i]] = true
   end
end




--[[
run:

5 6 3 1 7 

--]]

 

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