https://mw.lojban.org/api.php?action=feedcontributions&feedformat=atom&user=XalboLojban - User contributions [en]2026-10-22T14:55:23ZUser contributionsMediaWiki 1.46.2https://mw.lojban.org/index.php?title=fancylojban_challenges&diff=116471fancylojban challenges2015-07-21T17:17:38Z<p>Xalbo: </p>
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<div>Lojban is supposed to be a logical language, so why not practice translating some common mathematical statements, or algorithms<br />
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Additional challenge: Don't use mekso with VUhU. Or use them, if you prefer the challenge of wrangling with mekso grammar...<br />
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== Fermat's Last Theorem ==<br />
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(The statement, not the proof, of course!)<br />
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"No three positive integers ''a'', ''b'', and ''c'' can satisfy the equation ''a''<sup>''n''</sup>&nbsp;+&nbsp;''b''<sup>''n''</sup>&nbsp;=&nbsp;''c''<sup>''n''</sup> for any integer value of ''n'' greater than two."<br />
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Subproblem #1: How to explicitly make letter pronouns or ko'a-series existential, without having to assign {daxivo goi ny} e.g.?<br />
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[http://pastebin.com/gzT8X9vj Solution] by [[User:Spheniscine|la zipcpi]] (doesn't solve subproblem #1)<br />
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== Euclid's Algorithm for Greatest Common Divisor ==<br />
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'''function''' gcd(a, b)<br />
'''if''' b = 0<br />
'''return''' a<br />
'''else'''<br />
'''return''' gcd(b, a '''mod''' b)<br />
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Also try a non-recursive version, but we'd probably need a new brivla for while-loop, and {tu'e...tu'u} in NU.<br />
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Subproblem #1: come up with a better brivla to define than one based on the abbreviation "gcd"<br />
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Recursive [http://pastebin.com/F9795SdM solution] by [[User:Spheniscine|la zipcpi]] (doesn't solve subproblem #1)<br />
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== Towers of Hanoi ==<br />
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x1 is the sequence of moves that move discs from x2 to x3 using x4 as temporary storage.<br />
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Recursive [http://pastebin.com/QKseQhYa solution] by [[User:xalbo|la xalbo]]<br />
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== While-loop brivla - English and Lojban definitions ==<br />
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In the vein of '''ifle''', we might need brivla suitable for describing while-loops...<br />
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While-loop:<br />
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As long as x1 (du'u proposition) is true, x2 (action/event) repeatedly happens<br />
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Do-while-loop:<br />
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x1 (action/event) happens, then repeats as long as x2 (du'u proposition) is true.<br />
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With '''ko'oi''' / '''gau ko''' / '''ko gasnu lo nu''' turning it into a command that the agent (whether it's a computer or a person) should follow.<br />
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Question: Can Lojban, as designed, actually handle this? Can KOhA and letteral variables be reinterpreted in an existing du'u-proposition, or does the proposition remain the same even if the variables get goi-ed to something else?<br />
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== Informal algorithms ==<br />
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Instructional texts like cookbooks or game rules, that might have use for certain programming-language-like structures, but which might not need to be specified to the last detail like programming languages...</div>Xalbo