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µoªí©ó: ¬P´Á¤@ ¤T¤ë 20, 2006 11:24 pm ¤å³¹¥DÃD: |
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? GCD(45, 36)
LCM = 45 * 36 / GCD(45, 36)
? LCM
FUNCTION GCD
LPARAMETERS A, B
LOCAL A1, A2, A3
A1 = MIN(A, B)
A2 = MAX(A, B)
DO WHILE .T.
A3 = MOD(A2, A1)
IF A3 = 0
RETURN A1
ELSE
A2 = A1
A1 = A3
ENDIF
ENDDO
GCD(A, B)¬°A, Bªº³Ì¤j¤½¦]¼Æ, ³Ì¤p¤½¿¼Æ¬° A*B/GCD(A, B)
¦p¬° A, B, C ¤T¼Æ¨ä³Ì¤j¤½¦]¼Æ = GCD(GCD(A,B), C)
³Ì¤p¤½¿¼Æ¬° A*B*C/GCD(A, B)^2
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µoªí©ó: ¬P´Á¤@ ¤T¤ë 20, 2006 11:30 pm ¤å³¹¥DÃD: |
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*¨D¨âӼƪº³Ì¤j¤½¬ù¼Æ
*¥H¤U¬O§Ú®Ú¾Ú欧¤L¨½¼wºâªk¨Ó¼gªº
m=2
n=5
do while .t.
if mod(max(m,n),min(m,n))=0
r=min(m,n)&&rȳ̦Z´N¬O³Ì¤j¤½¬ù¼Æ
exit
else
r=mod(max(m,n),min(m,n))
m=min(m,n)
n=r
r=min(m,n)
endi
endd
*¤WÄѪº¥N½X´N¥i¥H¨D±om,n±o³Ì¤j¤½¬ù¼Æ
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m=2
n=4
F=m*n
do while .t.
if mod(max(m,n),min(m,n))=0
r=min(m,n)&&rȳ̦Z´N¬O³Ì¤j¤½¬ù¼Æ
exit
else
r=mod(max(m,n),min(m,n))
m=min(m,n)
n=r
r=min(m,n)
endi
endd
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µoªí©ó: ¬P´Á¤T ¤T¤ë 22, 2006 12:47 am ¤å³¹¥DÃD: |
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µoªí©ó: ¬P´Á¤T ¤T¤ë 22, 2006 9:07 am ¤å³¹¥DÃD: |
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µoªí©ó: ¬P´Á¤T ¤T¤ë 29, 2006 5:34 pm ¤å³¹¥DÃD: |
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SELE 0
USE c:\aa
GO top
n1=1
DO while !eof()
nAt=at('/',p1)+1
n2=val(subs(p1,nAt))
IF n2>0
LCM = n1 * n2 / GCD(n1, n2)
REPL p2 with n2&&ì¤À¥À
REPL p4 with val(left(p1,nAt-1))&&¤À¤l)
ENDIF
Skip
ENDDO
REPL p3 with LCM/p2*p4 all&&¬ù¤À«á¤À¤l
? LCM&&¤½¤À¥À |
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