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sort list by number at the end of string


rog1n

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Hello, 

I have a list like:

(setq lst '("ABC-ABD.002" "ABD.003" "ABD.001" "ABD.110" "ABC-ABD.050"))

 

I want to sort this list by the number at the end of string, I tried with:

 

(acad_strlsort  lst)
results: ("ABC-ABD.002" "ABC-ABD.050" "ABD.001" "ABD.003" "ABD.110")

 

but the correct for me is:

("ABD.001" "ABC-ABD.002" "ABD.003" "ABC-ABD.050" "ABD.110")

 

I know I need to break each string in two parts (letters and numbers), but my knowledge is small to break the string then sort and put it all together again.

Can anyone help me?

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(setq lst '("ABC-ABD.002" "ABD.003" "ABD.001" "ABD.110" "ABC-ABD.050"))

(vl-sort lst
         '(lambda (j k)
            (< (read (substr j (+ 2 (vl-string-search "." j))))
               (read (substr k (+ 2 (vl-string-search "." k))))
            )
          )
)

 

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Another, assuming your strings conform to the format of ending with 3 digits -

(defun foo ( l )
    (mapcar '(lambda ( n ) (nth n l))
        (vl-sort-i (mapcar '(lambda ( x ) (atoi (substr x (- (strlen x) 2)))) l) '<)
    )
)
_$ (foo '("ABC-ABD.002" "ABD.003" "ABD.001" "ABD.110" "ABC-ABD.050"))
("ABD.001" "ABC-ABD.002" "ABD.003" "ABC-ABD.050" "ABD.110")

 

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