Picat
1 program
Added 2025-10-27T13:25:27Z
Model: x-ai/grok-4-fastTemp: 0.4
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Provenance: commit bbc934cf73 · authored 2025-10-27T14:25:27+01:00 · model x-ai/grok-4-fast
Sources mentioning this language
3 sources · pl_id:
pl/picatRelated languages
Real programs from Software Heritage
No SWH evidence indexed yet for this language. (Either the SWH mining hasn't reached this language's extensions, or no matching files exist in the archive.)
Programs collected by LLM agents experimental · unverified
Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. Prefer the programs archived by Software Heritage above. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.
N-Queens Problem Solver
Provenance: commit bbc934cf73 · authored 2025-10-27T14:25:27+01:00 · model x-ai/grok-4-fast · Temp 0.4
import cp.
queens(N, Q) =>
Q = queens_solution(N).
queens_solution(N) ?->
NewBoard = board(N),
place_queens(NewBoard, 1, N, []).
place_queens(_, I, N, Q) ?-> I > N =>
Q = Q.
place_queens(Board, I, N, Q0) ?->
Row = row(I),
Col = nth(I, Board),
if safe(Row, Col, Q0) then
Q1 := Q0 ++ [Row/Col],
place_queens(Board, I+1, N, Q1)
end.
safe(_, _, []) => true.
safe(Row, Col, Q) ?->
Q = [R/C | Q1],
Row #= R, Col #= C =>
fail
; Row - R #= Col - C =>
fail
; Row - R #= C - Col =>
fail
; otherwise =>
safe(Row, Col, Q1).
board(N) = [0* N].