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authorPeter Mikkelsen <petermikkelsen10@gmail.com>2022-02-01 16:30:03 +0000
committerPeter Mikkelsen <petermikkelsen10@gmail.com>2022-02-01 16:30:03 +0000
commit6895401686568ed2804d6fafbb0cdca10e74b82f (patch)
tree32ac72e5342684cb22e0490482528c6a40ade3f3
parent1dd3378ab8fccb5f6f33ebc781a95010bd6394b8 (diff)
Add a test script for calculating n-queens (n=5)
-rw-r--r--tests/queens.apl7
1 files changed, 7 insertions, 0 deletions
diff --git a/tests/queens.apl b/tests/queens.apl
new file mode 100644
index 0000000..a2ce041
--- /dev/null
+++ b/tests/queens.apl
@@ -0,0 +1,7 @@
+dfs←{⊃∇⍨⌿⌽(⊂⍺⍶⍵)⍪⍺⍹⍵}
+atk←{∪∊(⊂⍵)+¯1 0 1×⊂⌽⍳⍴⍵}
+subs←{(⊂⍵)⍪¨(⍳⍴⊃⍺)~atk ⍵}
+accm←{⍺⍪((⍴⍵)=⍴⊃⍺)↑⊂⍵}
+fmt←{(⊂⎕io+⍵=⌾⍳⍴⍵)⌷'∘⎕'}
+queens←{fmt¨ 1↓(↓1 ⍵⍴0)accm dfs subs ⍬}
+⎕←queens 5