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A-M baby

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Ingy döt Net 2013-04-10 21:29:02 -07:00
parent 764da6cbbb
commit db842d013d
19005 changed files with 197040 additions and 7 deletions
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5
Task/Fibonacci-sequence/Factor/fibonacci-sequence-1.factor Normal file
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@ -0,0 +1,5 @@
: fib ( n -- m )
dup 2 < [
[ 0 1 ] dip [ swap [ + ] keep ] times
drop
] unless ;

4
Task/Fibonacci-sequence/Factor/fibonacci-sequence-2.factor Normal file
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@ -0,0 +1,4 @@
: fib ( n -- m )
dup 2 < [
[ 1 - fib ] [ 2 - fib ] bi +
] unless ;

6
Task/Fibonacci-sequence/Factor/fibonacci-sequence-3.factor Normal file
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@ -0,0 +1,6 @@
: fib2 ( x y n -- a )
dup 1 <
[ 2drop ]
[ [ swap [ + ] keep ] dip 1 - fib2 ]
if ;
: fib ( n -- m ) [ 0 1 ] dip fib2 ;

7
Task/Fibonacci-sequence/Factor/fibonacci-sequence-4.factor Normal file
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@ -0,0 +1,7 @@
USE: math.matrices
: fib ( n -- m )
dup 2 < [
[ { { 0 1 } { 1 1 } } ] dip 1 - m^n
second second
] unless ;