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I have a text file containing a list of numbers. I want to print only the lines that contain a number, the digits of which are consecutive digits.

The input list:

123
321
567
765
124
568

The output should be:

123
321
567
765

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  • $\begingroup$ Pick and Cases could do the job? $\endgroup$
    – Teabelly
    Oct 24, 2018 at 17:33

1 Answer 1

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consecutive = Total[Abs[Differences[IntegerDigits@FromDigits@#]] - 1] &;
string = "123 321 567 765 124 568";
Pick[#,  consecutive /@ #, 0]& @ StringSplit[string]

{"123", "321", "567", "765"}

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  • $\begingroup$ Thank you @AccidentalFourierTransform. $\endgroup$
    – kglr
    Oct 24, 2018 at 19:22

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