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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Sorting-algorithms-Shell-sort/360-Assembly/sorting-algorithms-shell-sort.360 Normal file
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* Shell sort 24/06/2016
SHELLSRT CSECT
USING SHELLSRT,R13 base register
B 72(R15) skip savearea
DC 17F'0' savearea
STM R14,R12,12(R13) prolog
ST R13,4(R15) "
ST R15,8(R13) "
LR R13,R15 "
L RK,N incr=n
SRA RK,1 incr=n/2
DO WHILE=(LTR,RK,P,RK) do while(incr>0)
LA RI,1(RK) i=1+incr
DO WHILE=(C,RI,LE,N) do i=1+incr to n
LR RJ,RI j=i
LR R1,RI i
SLA R1,2 .
L RT,A-4(R1) temp=a(i)
LR R2,RK incr
LA R2,1(R2) r2=incr+1
LR R3,RJ j
SR R3,RK j-incr
SLA R3,2 *.
LA R3,A-4(R3) r3=@a(j-incr)
LR R4,RK incr
SLA R4,2 r4=incr*4
LR R5,RJ j
SLA R5,2 .
LA R5,A-4(R5) @a(j)
* do while j-incr>=1 and a(j-incr)>temp
DO WHILE=(CR,RJ,GE,R2,AND,C,RT,LT,0(R3))
L R0,0(R3) a(j-incr)
ST R0,0(R5) a(j)=a(j-incr)
SR RJ,RK j=j-incr
LR R5,R3 @a(j)
SR R3,R4 @a(j-incr)=@a(j-incr)-incr*4
ENDDO , end do
ST RT,0(R5) a(j)=temp
LA RI,1(RI) i=i+1
ENDDO , end do
IF C,RK,EQ,=F'2' if incr=2
LA RK,1 incr=1
ELSE , else
LR R5,RK incr
M R4,=F'5' *5
D R4,=F'11' /11
LR RK,R5 incr=incr*5/11
ENDIF , end if
ENDDO , end do
LA R3,PG pgi=0
LA RI,1 i=1
DO WHILE=(C,RI,LE,N) do i=1 to n
LR R1,RI i
SLA R1,2 .
L R2,A-4(R1) a(i)
XDECO R2,XDEC edit a(i)
MVC 0(4,R3),XDEC+8 output a(i)
LA R3,4(R3) pgi=pgi+4
LA RI,1(RI) i=i+1
ENDDO , end do
XPRNT PG,L'PG print buffer
L R13,4(0,R13) epilog
LM R14,R12,12(R13) "
XR R15,R15 "
BR R14 exit
A DC F'4',F'65',F'2',F'-31',F'0',F'99',F'2',F'83',F'782',F'1'
DC F'45',F'82',F'69',F'82',F'104',F'58',F'88',F'112',F'89',F'74'
N DC A((N-A)/L'A) number of items of a
PG DC CL80' ' buffer
XDEC DS CL12 temp for xdeco
YREGS
RI EQU 6 i
RJ EQU 7 j
RK EQU 8 incr
RT EQU 9 temp
END SHELLSRT