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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Find-the-missing-permutation/360-Assembly/find-the-missing-permutation.360 Normal file
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* Find the missing permutation - 19/10/2015
PERMMISX CSECT
USING PERMMISX,R15 set base register
LA R4,0 i=0
LA R6,1 step
LA R7,23 to
LOOPI BXH R4,R6,ELOOPI do i=1 to hbound(perms)
LA R5,0 j=0
LA R8,1 step
LA R9,4 to
LOOPJ BXH R5,R8,ELOOPJ do j=1 to hbound(miss)
LR R1,R4 i
SLA R1,2 *4
LA R3,PERMS-5(R1) @perms(i)
AR R3,R5 j
LA R2,MISS-1(R5) @miss(j)
XC 0(1,R2),0(R3) miss(j)=miss(j) xor substr(perms(i),j,1)
B LOOPJ
ELOOPJ B LOOPI
ELOOPI XPRNT MISS,15 print buffer
XR R15,R15 set return code
BR R14 return to caller
PERMS DC C'ABCD',C'CABD',C'ACDB',C'DACB',C'BCDA',C'ACBD'
DC C'ADCB',C'CDAB',C'DABC',C'BCAD',C'CADB',C'CDBA'
DC C'CBAD',C'ABDC',C'ADBC',C'BDCA',C'DCBA',C'BACD'
DC C'BADC',C'BDAC',C'CBDA',C'DBCA',C'DCAB'
MISS DC 4XL1'00',C' is missing' buffer
YREGS
END PERMMISX