用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 ^ OJyN,A
插入排序: <<9Va.
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package org.rut.util.algorithm.support; R)?{]]v
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import org.rut.util.algorithm.SortUtil; D*5hrkV9
/** PMs z`
* @author treeroot fa*Cpt:
* @since 2006-2-2 YIt9M,5/Q
* @version 1.0 <O?y-$~
*/ ;T]d MfO
public class InsertSort implements SortUtil.Sort{ m4k
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/* (non-Javadoc) &Wp8u#4L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dq\ Jz~
*/ T[k4lM
public void sort(int[] data) { wmNHT _
int temp; Yw3oJf&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |9xI_(+{kP
} z_;3H,z`
} ";[iZ
} 87!C@XlK_
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} :qhpL-ER
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冒泡排序: Z.L?1V8Q1
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package org.rut.util.algorithm.support; 4!62/df
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import org.rut.util.algorithm.SortUtil; ?)Nj c&G
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/** ]e:/"
* @author treeroot E! /[gZ
* @since 2006-2-2 QR?yG+VU
* @version 1.0 )CPM7>
*/ JG`Q;K
public class BubbleSort implements SortUtil.Sort{ <E;pgw!
4 PLk
/* (non-Javadoc) 4rK{-jvh>m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O-vGyNxP|
*/ aIy*pmpD=
public void sort(int[] data) { u*S=[dq
int temp; qIUfPA=/_
for(int i=0;i for(int j=data.length-1;j>i;j--){ %A1@&xrbl
if(data[j] SortUtil.swap(data,j,j-1); R;whW:Tx
} ))D:8l@
} .D,p@4
} tbo>%kn
} /gcEw!JS
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} qL$a
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选择排序: <Tw>|cFT
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package org.rut.util.algorithm.support; :%&Q-kk4!
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import org.rut.util.algorithm.SortUtil; vD/NgRBww
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/** {U]H;~3 ?
* @author treeroot 0l*]L`]L#
* @since 2006-2-2 w1x"
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* @version 1.0 'k;4 j|<
*/ B0$:b!
public class SelectionSort implements SortUtil.Sort { _CBWb
`=+^|Y}
/* hDP/JN8y
* (non-Javadoc) 7`vEe'qz
* O-]mebTvw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G2 ]H6G$M
*/ !J1rRPV
public void sort(int[] data) { _cTh#t ^
int temp; :Eh\NOc_O
for (int i = 0; i < data.length; i++) { onCKI,"
int lowIndex = i; [AH6~-\ x
for (int j = data.length - 1; j > i; j--) { ( m\$hX
if (data[j] < data[lowIndex]) { mvW%
lowIndex = j; w&$d* E
} #&<)! YY5
} \]Kh[z0"
SortUtil.swap(data,i,lowIndex); 3uU]kD^
} mC&=X6Q]
} T J^u"j-'
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} H>Q%"|
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Shell排序: j.~!dh$mg
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package org.rut.util.algorithm.support; 76tdJ!4Z
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import org.rut.util.algorithm.SortUtil; /[:dp<
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/** O1%pxX'`S
* @author treeroot !Bz0^1,L
* @since 2006-2-2 U<"WK"SM
* @version 1.0 gK#mPcn^
*/ EcIE~qs
public class ShellSort implements SortUtil.Sort{ t$2_xX
rn DCqv!'P
/* (non-Javadoc) HCK|~k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n%h^o
*/ V$0dtvGvH
public void sort(int[] data) { I`[i;U{CK
for(int i=data.length/2;i>2;i/=2){ i|
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for(int j=0;j insertSort(data,j,i); o:Qv
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} kK8itO
} pY4}>ju(g
insertSort(data,0,1); ]&Z))H
} d@w~[b
yJuQ8+vgR}
/** z"D.Bm~ ]
* @param data tH=P6vY
* @param j ,Vd\m"K{
* @param i u4z&!MT}
*/ fA'qd.{f^
private void insertSort(int[] data, int start, int inc) { ly% F."v
int temp; ob+euCuJ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f>'Y(dJ'W
} T5urZq*R
} +% /s*EC'w
} 0CSv10Tg
Iff9'TE
} '65LKD
I%|>2}-_U
快速排序: ntNI]~z&
R1&unm0
package org.rut.util.algorithm.support; f= >OJ!:
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import org.rut.util.algorithm.SortUtil; N@B9
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r"$.4@gc
/** .xf<=ep
* @author treeroot [c_|ob]
* @since 2006-2-2 E{6~oZ#L
* @version 1.0 (}. @b|s
*/ Y*_)h\f
public class QuickSort implements SortUtil.Sort{ <2C7<7{7
A!1;}x
/* (non-Javadoc) |t$Ma'P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oYWR')8g
*/ 0G!]=
public void sort(int[] data) { 9rh}1eo7
quickSort(data,0,data.length-1); </uOe.l>Q
} %;#^l+UB
private void quickSort(int[] data,int i,int j){ cj11S>D
int pivotIndex=(i+j)/2; iy""(c
file://swap :JlP[I
SortUtil.swap(data,pivotIndex,j); ^
9!!;)
;lYHQQd!,
int k=partition(data,i-1,j,data[j]); P`r55@af4
SortUtil.swap(data,k,j); d[rv1s>i
if((k-i)>1) quickSort(data,i,k-1); a >\vUv*
if((j-k)>1) quickSort(data,k+1,j); Ym;*Y !~[
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} UH7jP#W%=
/** Z{?G.L*/
* @param data fdONP>K[E
* @param i Dk48@`l2
* @param j .`?@%{
* @return IK*07h/!
*/ vn/.}GkpU
private int partition(int[] data, int l, int r,int pivot) { H@]MXP[_
do{ m N8pg4
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 26CS6(sn
SortUtil.swap(data,l,r); 6(PM'@i
} 0'nikLaKy
while(l SortUtil.swap(data,l,r); tHLrhH<w
return l; &/,|+U[
} \9-"M;R.d
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} dz Zb
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改进后的快速排序: QeF3qXI
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package org.rut.util.algorithm.support; .F+@B\A<
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import org.rut.util.algorithm.SortUtil; 8QMPY[{
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/** +SJd@y@fR
* @author treeroot h=-"SW
* @since 2006-2-2 1;VHM'
* @version 1.0 cX3l t5
*/ ws4cF
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public class ImprovedQuickSort implements SortUtil.Sort { f 2l{^E#h
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private static int MAX_STACK_SIZE=4096; hlt[\LP=$
private static int THRESHOLD=10; n_'{^6*O
/* (non-Javadoc) S6fb f>[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cu+FM
*/ [z7bixN
public void sort(int[] data) { J4Dry<
int[] stack=new int[MAX_STACK_SIZE]; Mw9 \EhA
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int top=-1; $ImrOf^qt
int pivot; Y`?-VaY
int pivotIndex,l,r; Dc)dE2
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stack[++top]=0; :6%Z]tt
stack[++top]=data.length-1; B7imV@<
s&j-\bOic9
while(top>0){ =hl }.p
int j=stack[top--]; v$^Z6>vVI
int i=stack[top--]; gCyW Vp
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pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; >t7x>_~
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SortUtil.swap(data,pivotIndex,j); F:a ILx
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file://partition r7qh>JrO
l=i-1; 3do)Vg4
r=j; |fo0
do{ }NB}"%2
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); B$Kn1 k
SortUtil.swap(data,l,r); "yW:\
} 7%sdtunf`
while(l SortUtil.swap(data,l,r); 08*v~(T
SortUtil.swap(data,l,j); -IV]U*4
++E3]X|
if((l-i)>THRESHOLD){ Z@r.pRr'
stack[++top]=i; 6^DR0sO
stack[++top]=l-1; $q 2D+_
} q:g2Zc'Y~W
if((j-l)>THRESHOLD){ f7}*X|_Y
stack[++top]=l+1; Dl}$pN
stack[++top]=j; O+ICol
} t%8d-+$
c%qv9
} Rn@#d}
file://new InsertSort().sort(data); ]LM-@G+Jz
insertSort(data); 7x<i :x3
} jRatm.N
/** LW(6$hpPp
* @param data !kC*g
*/ k!{p7*0
private void insertSort(int[] data) { 9YBv|A
int temp; fDP$ sW
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nl9P,
d
} ,UuH}E
} &ot/nQQ
} t]e;;q=L.
N\bocMc,X
} h\'n**f_x
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归并排序: N
8-oY$*
2@
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package org.rut.util.algorithm.support; "]G\9b)
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import org.rut.util.algorithm.SortUtil; zL J/5&
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/** D:K4H+ch
* @author treeroot nWHa.H#
* @since 2006-2-2 =lpQnj"
* @version 1.0 @K!&qw
*/ c;'[W60
public class MergeSort implements SortUtil.Sort{ Y3=_ec3w
<wAFy>7
/* (non-Javadoc) QNl'ZB\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z0do;_x]E
*/ m1*O0Tg]"
public void sort(int[] data) { }m-FGk
int[] temp=new int[data.length]; ^7Fh{q4IE
mergeSort(data,temp,0,data.length-1); 5+wAzVA
} |ely|U. Tf
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private void mergeSort(int[] data,int[] temp,int l,int r){ 7>~5jYP
int mid=(l+r)/2; of@#:Qs
if(l==r) return ; c}0@2Vf
mergeSort(data,temp,l,mid); ,f&5pw
=
mergeSort(data,temp,mid+1,r); [2Ud]l:6E
for(int i=l;i<=r;i++){ ;{[.Zu
temp=data; y.Z?LCd<
} } GiHjzsR
int i1=l; r4#o+qE
int i2=mid+1; Ggb5K8D*
for(int cur=l;cur<=r;cur++){ <=,6p>Eo[
if(i1==mid+1) -uy`!A
data[cur]=temp[i2++]; pf7it5
else if(i2>r) [#sz WNfU
data[cur]=temp[i1++]; L~KM=[cn
else if(temp[i1] data[cur]=temp[i1++]; d0,s"K7@
else ~JH:EB:
data[cur]=temp[i2++]; _hk.2FV:3m
} T'b_W,m~,u
} =*LS%WI
Y(d$
} $O5UyKI
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改进后的归并排序: s
S7c!
vZBc!AW
package org.rut.util.algorithm.support; E^SH\5B
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import org.rut.util.algorithm.SortUtil; /ID?DtJ
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/** Ho
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* @author treeroot f-71~
* @since 2006-2-2 x UD-iSY
* @version 1.0 qZA).12qS
*/ 9,"L^W8"k
public class ImprovedMergeSort implements SortUtil.Sort { ,11H.E
Z
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private static final int THRESHOLD = 10; +PuPO9jKO@
#&7}-"Nd
/* 2m2;t0
* (non-Javadoc) TG5XSy
* P->y_4O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]: ~OG@(
*/ o+$7'+y1n-
public void sort(int[] data) { Ht4;5?/y
int[] temp=new int[data.length]; 'u1?tQ=gmk
mergeSort(data,temp,0,data.length-1); Ez-[
)44/
} 2]ape !(
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private void mergeSort(int[] data, int[] temp, int l, int r) { ok4@N @
int i, j, k; 1{r)L{]
int mid = (l + r) / 2; }7.PH'.8
if (l == r) ;y2/-tL?
return; d:U9pC$
if ((mid - l) >= THRESHOLD) [`):s= FC
mergeSort(data, temp, l, mid); #gcF"L||
else =Yt
R`
insertSort(data, l, mid - l + 1); #*(td<Cp
if ((r - mid) > THRESHOLD) aqc?pqM
mergeSort(data, temp, mid + 1, r); $+I;oHWI
else $"H{4x`-
insertSort(data, mid + 1, r - mid); E 0?iXSJ
])!o5`ltZ
for (i = l; i <= mid; i++) { a0ObBe'
temp = data; ;{"+g)u
} 81i655!Z
for (j = 1; j <= r - mid; j++) { =HlQ36;*
temp[r - j + 1] = data[j + mid]; X]dwX%:Z!j
} !f+H,]D"
int a = temp[l]; 9amaL~m
int b = temp[r]; C-H@8p?T
for (i = l, j = r, k = l; k <= r; k++) { `u&Zrdr,
if (a < b) { gjAIEI
data[k] = temp[i++]; F;<xnC{[
a = temp; /Dj=iBO
} else { W!>.$4Q9
data[k] = temp[j--]; k|H:
b = temp[j]; /Bm( `T
} #Q`dku%V:
} >b{q.
} %eO0wa$a
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/** k>g_Z`%<
* @param data !GNBDRr
* @param l EG=Sl~~o
* @param i H,u<|UMM_
*/ eF3,2DDC
private void insertSort(int[] data, int start, int len) { AQ[GO6$,%H
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C
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} ^i}
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} yLQ*"sw\
} x-?Sn' m
} Cy=Hy@C
rMhB9zB1
堆排序: &?yZv{
VQS~\:1
package org.rut.util.algorithm.support; ~15N7=wCM
z3;*Em8Ir
import org.rut.util.algorithm.SortUtil; _zwG\I|Q
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/** *5^Q7``
* @author treeroot "*srx]
* @since 2006-2-2 x}"uZ$g
* @version 1.0 vz7J-CH
*/ c:o]d )S
public class HeapSort implements SortUtil.Sort{ = < oBgD0k
RpD=]y!5_
/* (non-Javadoc) T"DlT/\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5jgR4a*_v
*/ VYk!k3qS
public void sort(int[] data) { jGpN,/VQa
MaxHeap h=new MaxHeap(); U_n9]Z
h.init(data); .jk@IL
for(int i=0;i h.remove(); 9#MBaO8_"
System.arraycopy(h.queue,1,data,0,data.length); zZ` _D|<m
} 9|gr0~j
2h1vVF3
private static class MaxHeap{ t_$2CRG#
"C{}Z
void init(int[] data){ .xm.DRk3
this.queue=new int[data.length+1]; vRHd&0
for(int i=0;i queue[++size]=data; xk5@d6Y{r
fixUp(size); HV{wI1
} m0;CH/D0
} P;ci9vk
+
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private int size=0; t7j);W%e6
+oovx2r&
private int[] queue; ~^r29'3
=06gj)8
public int get() { UVd 7 JGR
return queue[1]; U<_3^
} =pS5uR~
fj;y}t1E]
public void remove() { V`XNDNJ:
SortUtil.swap(queue,1,size--); @W[f1
fixDown(1); uP~@U" !
} Vt".%d/`7
file://fixdown +~mA}psr
private void fixDown(int k) { ~l]ve,W[
int j; {pnS Q
while ((j = k << 1) <= size) { 3@M|m<_R$
if (j < size %26amp;%26amp; queue[j] j++; I uMQ9&
if (queue[k]>queue[j]) file://不用交换 Tk:h@F|B.|
break; =,_ +0M9
SortUtil.swap(queue,j,k); LIvFx|
k = j; H1QJk_RL
} ?&63#B,iZ
} /tf5Bv'<
private void fixUp(int k) { !O:y@
while (k > 1) { y}My.c
int j = k >> 1; w1OI4C)~
if (queue[j]>queue[k]) )GM41t1i
break; CsoiyY -2
SortUtil.swap(queue,j,k); i*Sqd a
$
k = j; S~;4*7+?:
} 1^7hf;|#g
} :7!0OVQla\
Z7hgA-t
} 7b;I+q
$m].8?
} HUv/ ~^<
8&?s#5zA
SortUtil: i]6`LqlO
->g*</
package org.rut.util.algorithm; '%dfzK*Z
x,|hU@h
import org.rut.util.algorithm.support.BubbleSort; V C24sU
import org.rut.util.algorithm.support.HeapSort; 'E/^8md>
import org.rut.util.algorithm.support.ImprovedMergeSort; ifUGY[ L
import org.rut.util.algorithm.support.ImprovedQuickSort; Z{ X|6.
import org.rut.util.algorithm.support.InsertSort; jB$IyQ;@
import org.rut.util.algorithm.support.MergeSort; %S*{9hm/
import org.rut.util.algorithm.support.QuickSort; <UV1!2nv*
import org.rut.util.algorithm.support.SelectionSort; E[@ u
3i8
import org.rut.util.algorithm.support.ShellSort; $RIecv<e_
rvbLyv;~
/** )4<__|52"1
* @author treeroot W&&;:Fr
* @since 2006-2-2 vd
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* @version 1.0 YaKeq5%y
*/ Tgm nG/Z
public class SortUtil { ;CmS ~K:
public final static int INSERT = 1; Y2ZT.l
public final static int BUBBLE = 2; F`Q[6"<a
public final static int SELECTION = 3; uW@oyZUj
public final static int SHELL = 4; r? NznNVU
public final static int QUICK = 5; =|3ek
public final static int IMPROVED_QUICK = 6; T92UeG
public final static int MERGE = 7; GqaDL3Niqs
public final static int IMPROVED_MERGE = 8; 7=TF.TW)
public final static int HEAP = 9; v/68*,z[
j53*E
)d
public static void sort(int[] data) { h_:C+)13`x
sort(data, IMPROVED_QUICK); njScz"L~
} Q<^Tl(`/N?
private static String[] name={ nrxo&9[@n
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `\gnl'
}; E*V`":efS
TZ(cu>
private static Sort[] impl=new Sort[]{ G-xDN59K
new InsertSort(), P"y`A}Bx
new BubbleSort(), / ';0H_
new SelectionSort(), juka0/
new ShellSort(), OjJXysslXO
new QuickSort(), h|VeG3H
new ImprovedQuickSort(), <lw`
3aa(
new MergeSort(), j9?}j#@
new ImprovedMergeSort(), EQb7-vhg
new HeapSort() 3DiLk=\~
}; dJ2Hr;Lc
>/kcdWl
public static String toString(int algorithm){ FbaEB RM
return name[algorithm-1]; }=gx#
} ryW'Z{+r'
Rot@x r7Hc
public static void sort(int[] data, int algorithm) { kP#B5K_U|
impl[algorithm-1].sort(data); h]+C.Eqnt#
} ewa wL"
-(bXSBs#
public static interface Sort { 7'Zky2F
public void sort(int[] data); KIui(n#/
} =XucOli6
yj;sSRT
public static void swap(int[] data, int i, int j) { kzn5M&f>
int temp = data; Vr6@>@SC
data = data[j]; e+$p9k~
data[j] = temp; +$C4\$t
} 8jd;JPz@\
} P
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