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15
Task/Substring-Top-and-tail/ACL2/substring-top-and-tail.acl2
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15
Task/Substring-Top-and-tail/ACL2/substring-top-and-tail.acl2
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(defun str-rest (str)
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(coerce (rest (coerce str 'list)) 'string))
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(defun rdc (xs)
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(if (endp (rest xs))
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nil
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(cons (first xs)
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(rdc (rest xs)))))
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(defun str-rdc (str)
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(coerce (rdc (coerce str 'list)) 'string))
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(str-rdc "string")
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(str-rest "string")
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(str-rest (str-rdc "string"))
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