Use Lua to implement common data structures

Use many simple data structures such as Table arrays, linear tables, queues, sets, etc. in Lua

• Arrays
  in Lua use 1 as their subscript

a={
    
    1,3,5,7,9}
print(a[2])

• Two-dimensional array

a = {
    
    }
for i = 1, 5 do
    a[i] = {
    
    }
    for j = 1, 5 do
        a[i][j] = i * j
        print(a[i][j])
    end
end