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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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4
Task/Closest-pair-problem/J/closest-pair-problem-1.j Normal file
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vecl =: +/"1&.:*: NB. length of each vector
dist =: <@:vecl@:({: -"1 }:)\ NB. calculate all distances among vectors
minpair=: ({~ > {.@($ #: I.@,)@:= <./@;)dist NB. find one pair of the closest points
closestpairbf =: (; vecl@:-/)@minpair NB. the pair and their distance

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Task/Closest-pair-problem/J/closest-pair-problem-2.j Normal file
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]pts=:10 2 ?@$ 0
0.654682 0.925557
0.409382 0.619391
0.891663 0.888594
0.716629 0.9962
0.477721 0.946355
0.925092 0.81822
0.624291 0.142924
0.211332 0.221507
0.293786 0.691701
0.839186 0.72826
closestpairbf pts
+-----------------+---------+
|0.891663 0.888594|0.0779104|
|0.925092 0.81822| |
+-----------------+---------+

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Task/Closest-pair-problem/J/closest-pair-problem-3.j Normal file
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]pts=:10 4 ?@$ 0
0.559164 0.482993 0.876 0.429769
0.217911 0.729463 0.97227 0.132175
0.479206 0.169165 0.495302 0.362738
0.316673 0.797519 0.745821 0.0598321
0.662585 0.726389 0.658895 0.653457
0.965094 0.664519 0.084712 0.20671
0.840877 0.591713 0.630206 0.99119
0.221416 0.114238 0.0991282 0.174741
0.946262 0.505672 0.776017 0.307362
0.262482 0.540054 0.707342 0.465234
closestpairbf pts
+------------------------------------+--------+
|0.217911 0.729463 0.97227 0.132175|0.708555|
|0.316673 0.797519 0.745821 0.0598321| |
+------------------------------------+--------+