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You already know how to write a recursive function, here is how to write a cursive function

𝓭𝓮𝓯 𝓹𝓻𝓸𝓬𝓮𝓼𝓼_𝓽𝓮𝔁𝓽(𝓻𝓸𝔀𝓼:𝓛𝓲𝓼𝓽[𝓼𝓽𝓻]):
𝓻𝓮𝓽𝓾𝓻𝓷 [𝓻𝓸𝔀 𝓯𝓸𝓻 𝓻𝓸𝔀 𝓲𝓷 𝓻𝓸𝔀𝓼 𝓲𝓯 𝓻𝓸𝔀 𝓲𝓼 𝓷𝓸𝓽 𝓝𝓸𝓷𝓮]