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Getting the input from the program argument instead of the standard input

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edited Dec 19, 2021 at 4:40

Lua, 9494 91 84 bytes

n=io.read():upper()for i=65,90 do _,c=nc=(...):upper():gsub(string.char(i),"")if c~=0 then io.write(c~=0 and c)end or"")end

n=io.read():upper()for i=65,90 do _,c=n:gsub(string.char(i),"")if c~=0 then io.write(c)end end

for i=65,90 do _,c=(...):upper():gsub(string.char(i),"")io.write(c~=0 and c or"")end

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created Dec 19, 2021 at 2:59

n=io.read():upper()for i=65,90 do _,c=n:gsub(string.char(i),"")if c~=0 then io.write(c)end end