Greyscale bars/Display: Difference between revisions
→{{header|J}}: J9 revision
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Line 824:
'''Solution:'''
<lang j> load 'viewmat'
NB. size=. 2{.".wd'qm' NB. J6
NB. size=. getscreenwh_jgtk_ '' NB. J7
size=. 2 3{_".wd'qscreen' NB. J9
rows=. (2^3+i.4),._1^i.4
bars=. ((64%{.)#[:(<:@|%~i.)*/)"1 rows
togreyscale=. (256#. [:<.255 255 255&*)"0
'rgb' viewmat (4<.@%~{:size)# (64<.@%~{.size)#"1 togreyscale bars
wd 'pmove 0 _30 ',":size [ wd 'psel ',1{::,hforms_jviewmat_'' NB. J9</lang>
Note that
=={{header|Java}}==
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