13 lines
365 B
Forth
13 lines
365 B
Forth
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: popcount(n)
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0 while ( n ) [ n isOdd + n bitRight(1) ->n ] ;
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: test
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| i count |
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30 seq map(#[ 3 swap 1- pow ]) map(#popcount) println
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0 ->count
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0 while( count 30 <> ) [ dup popcount isEven ifTrue: [ dup . count 1+ ->count ] 1+ ] drop printcr
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0 ->count
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0 while( count 30 <> ) [ dup popcount isOdd ifTrue: [ dup . count 1+ ->count ] 1+ ] drop ;
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