celltypeqeleme
tx
fq
extp
extp
extpreviousqp
extqqpreviousp
positio
LocateEleme
ttypexDLISTDL定位第一个X元素
positio
pDLwhilep
extNULL
ifp
exteleme
txretur
p
ext
elsepp
ext
retur
p
ext
i
tSwapEleme
ttypexDLISTDL交换
positio
pqpLocatexDLifpNULL
retur
0else
qppreviousppreviousqpreviousqprevious
extpp
extpreviousqq
extp
extp
extqppreviousqretur
1
voidI
putDLISTDLi
t
positio
pDLppreviousNULLp
ext
ewcelltype
fp
ext
extNULLp
extpreviousDLi
txfori
ti0i
i
ci
xI
sertxp
voidOutputDLISTDL
positio
pDLwhilep
extNULL
coutp
exteleme
t