Pythagorean quadruples: Difference between revisions
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<pre>
1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1024 1280 2048
</pre>
=={{header|Amazing Hopper}}==
The process runs in 3.2 secs. on an Intel Core 2 Duo at 2.53 or 2.66 GHz. It's SLOW, but believe me, when it comes to Hopper, it's quite a feat! :D
<lang>
#include <flow.h>
DEF-MAIN(argv, argc)
SET(N, 2200)
DIM( MUL(MUL(N,N),2) ) AS-ZEROS( temp )
DIM( N ) AS-ZEROS( found )
MSET( a,T1,T2 )
TIC(T1)
SEQ-SPC(1,N,N,a), LET( a := MUL(a,a) )
SET(i,1)
PERF-UP(i,N,1)
SET(r,0), LET( r := ADD( [i] GET( a ), [i:end] CGET(a) ) )
SET-RANGE( r ), SET(temp, 1), CLR-RANGE
NEXT
SET(c,1), SET(s,3), MSET(s1,s2,d)
PERF-UP(c, N, 1)
LET( s1 := s )
s += 2
LET( s2 := s )
LET( d := ADD(c,1) )
PERF-UP(d, N, 1)
COND ( [s1] GET(temp) )
[d] {1} PUT(found)
CEND
s1 += s2
s2 += 2
NEXT
NEXT
TOC(T1, T2), PRNL("Time = ", T2 )
PRN( "Imprimiendo resultados:\n" )
CART( IS-ZERO?( found ) ) MOVE-TO( r )
PRNL( r )
MCLEAR(temp, found, a, r)
END
</lang>
{{out}}
<pre>
Time = 3.20596
Imprimiendo resultados:
1,2,4,5,8,10,16,20,32,40,64,80,128,160,256,320,512,640,1024,1280,2048
</pre>
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