Rosetta Code - Compare a list of strings

Forum|Forum|4 years ago
October 21, 2021
2 replies
2931 views

I've added the following solution to the Rosetta Code task: Compare a list of strings

The new Mathcad entry is at https://rosettacode.org/wiki/Compare_a_list_of_strings#Mathcad

Given a list of arbitrarily many strings, show how to:
•	test if they are all lexically equal
•	test if every string is lexically less than the one after it (i.e. whether the list is in strict ascending order)
Each of those two tests should result in a single true or false value, which could be used as the condition of an if statement or similar.

If the input list has less than two elements, the tests should always return true.

2021 10 21 A.png

As always, please feel free to improve upon and submit your own solution to this and the other Rosetta Stone tasks.

Stuart

1_Rosetta---Express---Compare-a-list-of-strings-01.zip

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VladimirN

24-Ruby III

Nice done, Stuart!

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StuartBruff

Author

23-Emerald V

@VladimirN wrote:

Nice done, Stuart!

Спасиво, Владимир.

(Как вы говорите «no worries» в разговорном русском языке?? «не беспокойтесь»? «Без пробле́м»? «не надо»? «не вопро́с»?)

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VladimirN

24-Ruby III

"Нет проблем".

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LucMeekes

23-Emerald IV

I suppose you realise that, when ORIGIN is set to another value than 0, by accident or purposely, many of these functions will fail.

Luc

S

StuartBruff

Author

23-Emerald V

@LucMeekes wrote:

I suppose you realise that, when ORIGIN is set to another value than 0, by accident or purposely, many of these functions will fail.

Luc

Yes, but I'm writing for those who will use/encounter vanilla Mathcad "out of the box" (like me! 😁).

I have a worksheet full of ORIGIN-independent functions, but I often find that, for illustrative purposes at least, the additional "ORIGIN"s tend to obscure the working of a function(*). They also take up more of the very limited horizontal space than I like, even if I use "O" as a shorthand notation for "ORIGIN". If I do use a base other than 0, I tend to write functions specifically for that origin. Besides, it's easy enough to "escape" the functions in an ORIGIN wrapper ... I think I did that in one example in the recent TDMA thread ... yep, I did:

And, of course, there's no reason why some kind-hearted soul could not improve upon the current Rosetta Code Mathcad entries, or add a programmed version in M11/M15/Prime n ... 😈

Stuart

(*) To be more precise, I have a core set of functions that are ORIGIN-independent, which I then use to define other functions (eg, I use "head(v) in place of v_{ORIGIN}, as in the string comparison excerpt above).

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I could do the same with strings (eg, replace the 0 in strhead). but I'd have to know that the Calculation option was set and I don't know how to do that in Express (I suppose a try-catch would work in Prime).

2021 10 22 B.png