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。 i *B:El1
插入排序: Yc
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package org.rut.util.algorithm.support; ~6kJ~R4
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import org.rut.util.algorithm.SortUtil; uWTN2jr
/** <Pio Q>~
* @author treeroot ge$LIsE8
* @since 2006-2-2 -?5$ PH
* @version 1.0 Q<yAT(w
*/ *2=W5LaK.
public class InsertSort implements SortUtil.Sort{ ywEDy|Wn$~
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/* (non-Javadoc) _W |R;Cz]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gH'_ymT=
3
*/ { V0>iN:~S
public void sort(int[] data) { 6|^0_6_
int temp; %9X{{_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s@s/'^`
} \6:>{0\
} 2 h<U
} C3)|<E
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} wLUF v(&C
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冒泡排序: tOM(U-7Z&
Px#$uU
package org.rut.util.algorithm.support; wyzOcx>M
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import org.rut.util.algorithm.SortUtil; ]^ #`j
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/** [f/.!@sj
* @author treeroot -w ~(3(
* @since 2006-2-2 Q&PB]D{
* @version 1.0 b_=8!Q.:
*/ 2e.N"eLNt
public class BubbleSort implements SortUtil.Sort{ 6- ]h5L]
{5-zyE
/* (non-Javadoc) [O_^MA,z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UiIF6-ZZ!
*/ 3 Z1OX]R
public void sort(int[] data) { W' ep6O
int temp; J$QBI&D
for(int i=0;i for(int j=data.length-1;j>i;j--){ hiwIWd:H
if(data[j] SortUtil.swap(data,j,j-1); Gs_qO)~xo
} #Qd'+M
} k"
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} x@m<Ym-
} j{;|g%5t
)* TF"
} 5m7b\Mak
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选择排序: c
0-w6
A,BEKjR~J
package org.rut.util.algorithm.support; -72j:nk
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import org.rut.util.algorithm.SortUtil; *d>vR1
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/** ]*;F. pZ
* @author treeroot =VSkl;(O
* @since 2006-2-2 O R
#7"
* @version 1.0 h$ Da&$uyI
*/ >zmzK{A=
public class SelectionSort implements SortUtil.Sort { v"RiPHLT
#) ]c0]p
/* Uo6(|mm
* (non-Javadoc) DMd ,8W7a
* *Hs*,}MS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eg3L:rk_
*/ 3wC
R|ab}
public void sort(int[] data) { M&y5AB0
int temp; 2*u.3,aW
for (int i = 0; i < data.length; i++) { iYKU[UP?
int lowIndex = i; //.>>-~1m
for (int j = data.length - 1; j > i; j--) { U-EhPAB@
if (data[j] < data[lowIndex]) { Au5rR>W
lowIndex = j; 6peyh_
} 2\0Oji\6
} (A{NF(
SortUtil.swap(data,i,lowIndex); r5 yO5W
} Oq+E6"<y;?
} B1$ikY
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} YH\j@^n
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Shell排序: jPk
c3dG
+
vZkXt!%)
package org.rut.util.algorithm.support; |nY~ZVTt/
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import org.rut.util.algorithm.SortUtil; Np2ci~"<.
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/** XmWlv{T+
* @author treeroot kdcQw7G
* @since 2006-2-2 i- lKdpv
* @version 1.0 KDey(DN:
*/ /IR#A%U
public class ShellSort implements SortUtil.Sort{ +\`rmI
_%Z P{5D>
/* (non-Javadoc) V1utUGJV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2dbRE:v5
*/ ]V<-J
public void sort(int[] data) { {/}^D-
for(int i=data.length/2;i>2;i/=2){ 6)[<)?A.[
for(int j=0;j insertSort(data,j,i); #3MKH8k&~
} {TAw)!R~
} ,2`~ NPb
insertSort(data,0,1); H}nJbnU
} AhxGj+
nl
n OwyMJ
/** #w>~u2W
* @param data 7[KCWJ
* @param j fz}?*vPW
* @param i uGCp#>+
*/ :a3xvN-l
private void insertSort(int[] data, int start, int inc) { [B9 ;?G
int temp; 'MQ%)hipA
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "C74
} =|SdVv
} 4#)6.f~
} YG[w@u
MzTW8
} '4u v3)P
}9&9G%
快速排序: 'fY9a(Xt.
HI!4
package org.rut.util.algorithm.support; ({[,$dEa;
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import org.rut.util.algorithm.SortUtil; WY>Knp=
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/** =u|~
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* @author treeroot 9DE)S)e8
* @since 2006-2-2 ::"E?CQLV
* @version 1.0 i@zY9,b
*/ V3.t;.@
public class QuickSort implements SortUtil.Sort{ zxKCVRJ
IOEM[zhb$
/* (non-Javadoc) ;/sHWI
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cs1>bpY*R6
*/ n&!+wcJ;Yt
public void sort(int[] data) { SSmHEy*r)
quickSort(data,0,data.length-1); JP'=
UZ'
} ]vo_gKZ
private void quickSort(int[] data,int i,int j){ Gr)-5qh
int pivotIndex=(i+j)/2; x-_vl
9P)
file://swap cm@;*
SortUtil.swap(data,pivotIndex,j); Vb)zZ^va+
91d },Mq:
int k=partition(data,i-1,j,data[j]); 6 bO;&
SortUtil.swap(data,k,j); :6Pad
if((k-i)>1) quickSort(data,i,k-1);
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if((j-k)>1) quickSort(data,k+1,j); ;p Z[|
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} li/aN
/** @8gEH+r
* @param data LwdV3 vb#
* @param i 5Op_*N{V
* @param j 3!#/k+,C
* @return n?QZFeI`
*/ FpVV4D
private int partition(int[] data, int l, int r,int pivot) { `9 [i79U
do{ 'uC59X4l
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !O)qYmK]|
SortUtil.swap(data,l,r); y0IK,W'&?
} $[(d X!]F
while(l SortUtil.swap(data,l,r); -=5)NH
t
return l; .j?kEN?w
} MCnN^
p^X^1X7
} =NDOS{($
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改进后的快速排序: DW2>&|
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package org.rut.util.algorithm.support; 3 ^}A %-bS
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import org.rut.util.algorithm.SortUtil; wda';@y5(
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/** M-MKk:o
* @author treeroot A3R#z]Ub
* @since 2006-2-2 J^zi2jtV
* @version 1.0 e7k%6'@
*/ Lj
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public class ImprovedQuickSort implements SortUtil.Sort { dM]#WBOPy
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private static int MAX_STACK_SIZE=4096; sb.J
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private static int THRESHOLD=10; Eipp~GD
/* (non-Javadoc) "wM1 qX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (^: p
*/ 2@Lbfo A
public void sort(int[] data) { o"q+,"QL
int[] stack=new int[MAX_STACK_SIZE]; S`=WF^
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int top=-1; k<Sl1vK
int pivot; 6STp>@Ch]"
int pivotIndex,l,r; (Hp' B))2
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stack[++top]=0; FFcB54ALTf
stack[++top]=data.length-1; hIU(P Dl4
.6.^G
while(top>0){ P&=lV}f
int j=stack[top--]; z2 hFn&
int i=stack[top--]; qqOFr!)g
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pivotIndex=(i+j)/2; O)#U ^
pivot=data[pivotIndex]; k`VM2+9h'^
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SortUtil.swap(data,pivotIndex,j); 9M-K]0S(
%oof}=MxCL
file://partition \N6\v5vh
l=i-1; 5Ec/(-F
r=j; q``wt
do{ }[!92WS/ee
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2 y8~#*O
SortUtil.swap(data,l,r); lU.Kc
} rAukHeH
while(l SortUtil.swap(data,l,r); +U8Bln
SortUtil.swap(data,l,j); V3s L;
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if((l-i)>THRESHOLD){ YA&`&$
stack[++top]=i; T*>`,}J
stack[++top]=l-1; 6mPm=I[oh
} ,+1m`9}
if((j-l)>THRESHOLD){ X.#oEmA,P
stack[++top]=l+1; w{,4rk;Hr
stack[++top]=j;
}31ZX
} Mr3-q
MC!ZX)mF
} UY>v"M
file://new InsertSort().sort(data); p*qPcuAA
insertSort(data); LN^f1/b*
} {1Eu7l-4
/** {"}V&X160o
* @param data Sycw %k
*/ m $dV<
private void insertSort(int[] data) { !m y8AWO'
int temp; kfrY1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); elO<a]hX
} W>-B [5O&[
} WxUxc75
} %dttE)oH?
77,oPLSn
} FxW&8 9G
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归并排序: wWjG
JvJ
eV!L^>>>
package org.rut.util.algorithm.support; ukAKFc^)k
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import org.rut.util.algorithm.SortUtil; (K{5fC
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/** yfj(Q s
* @author treeroot 5<+K?uhm
* @since 2006-2-2 -j`LhS~|
* @version 1.0 c$H+g,7xQ-
*/ p]gT&[iJ
public class MergeSort implements SortUtil.Sort{ :E_a0!'
j,-C{ K
/* (non-Javadoc) veh
5}2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }*wLEa
*/ {^ec(EsO#
public void sort(int[] data) { 3YL
l;TP_
int[] temp=new int[data.length]; *dsX#Iz
mergeSort(data,temp,0,data.length-1); [M+tB"_
} ,T5u'";
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private void mergeSort(int[] data,int[] temp,int l,int r){ _eQ-`?
int mid=(l+r)/2; HZjf`eM,
if(l==r) return ; 5J.0&Dda
mergeSort(data,temp,l,mid); )e%}b-I'r
mergeSort(data,temp,mid+1,r); !]koSw}
for(int i=l;i<=r;i++){ @F5f"8!.\
temp=data; <nHkg<O6Y
} yI;"9G
int i1=l; 5LW}h^N
int i2=mid+1; 6(V
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for(int cur=l;cur<=r;cur++){ IApT'QNM
if(i1==mid+1) >,5i60Q
data[cur]=temp[i2++]; [
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else if(i2>r) u'5`[U
-!
data[cur]=temp[i1++]; 2Aq~D@,9=:
else if(temp[i1] data[cur]=temp[i1++]; }VCI=?-
else ?UZ?NY
data[cur]=temp[i2++]; Ao.\
} 963aW*r
} DVp5hR_$
7[#xOZT
} (/{aJV
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改进后的归并排序: l]LxL
4ne5=YY*
package org.rut.util.algorithm.support; ]7YNIS
c4mh EE-
import org.rut.util.algorithm.SortUtil; |Ul,6K@f"5
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/** eVz#7vqv
* @author treeroot </~ 6f(mg
* @since 2006-2-2 c0- ;VZ'
* @version 1.0 '-PC7"o
*/ gX @`X
public class ImprovedMergeSort implements SortUtil.Sort { MDa7 B +4
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private static final int THRESHOLD = 10; ]!"S+gT*C
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/* 1T|$BK@)
* (non-Javadoc) 4`v!Z#e/aX
* JgfVRqm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &)9{HRP
*/ hlbvt-C?}"
public void sort(int[] data) { 3{7T4p.G
int[] temp=new int[data.length]; TpfZ>d2
mergeSort(data,temp,0,data.length-1); Ty4S~ClO#'
} WCq
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-apXI.
private void mergeSort(int[] data, int[] temp, int l, int r) { tD=@ SX'Y
int i, j, k; L=!of{4Z(}
int mid = (l + r) / 2; z%d#@w0X1
if (l == r) 3z =^(Y
return; v4vf}.L]
if ((mid - l) >= THRESHOLD) p.JXSn
mergeSort(data, temp, l, mid); Z=z%$l
else J>0b1
insertSort(data, l, mid - l + 1); :<S<f%
if ((r - mid) > THRESHOLD) W[''Cc.
mergeSort(data, temp, mid + 1, r); G-um`/ <%
else 2b@tj
5
insertSort(data, mid + 1, r - mid); |F$BvCg
,_v|#g@{
for (i = l; i <= mid; i++) { n.6T
OF
temp = data; #CUzuk&
} QV|>4 ^1D
for (j = 1; j <= r - mid; j++) { n%%7KTqu
temp[r - j + 1] = data[j + mid]; ?;ukvD
} .8gl< vX
int a = temp[l]; IzLF'F
int b = temp[r]; -6~' cm
for (i = l, j = r, k = l; k <= r; k++) { (nSml,gU
if (a < b) { 0JyVNuHn
data[k] = temp[i++]; HM[klH]s=
a = temp; "E*e2W
} else { "9y(
}
data[k] = temp[j--]; </zXA$m
b = temp[j]; Yg|lq9gD
} -#:zsu
} vRQOs0F;
} K|S:{9Q
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/** s<QkDERMX
* @param data F3U` ueP
* @param l a|j%n
* @param i 0S/'
94%w
*/ fRZ KEIyk
private void insertSort(int[] data, int start, int len) { ^-)txC5{T
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); GRqT-/n"
} 77 r(*.O|
} C|-pD
} T3%C%BcX
} k\)Cw
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堆排序: NaUr!s
L{{CAB!
package org.rut.util.algorithm.support; s Kicn5
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import org.rut.util.algorithm.SortUtil; `RRE(SiKU
R=j% S!
/** BHFY%6J!
* @author treeroot }CGSEr4'w~
* @since 2006-2-2 Cr ?4Ngw
* @version 1.0 "hz\Z0zg2
*/ \Gp*x\<^Z
public class HeapSort implements SortUtil.Sort{ JC?N_kP%W
^]C&tG0 !
/* (non-Javadoc) ]88];?KS}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !c#]?b%
*/ xJ8%<RR!t
public void sort(int[] data) { X|LxV]
MaxHeap h=new MaxHeap(); ;QCrHqRT`
h.init(data); _banp0ywS
for(int i=0;i h.remove(); W;6vpPhg#!
System.arraycopy(h.queue,1,data,0,data.length); c:!z O\P#
} "`Ge~N[$A
/'.=sH
private static class MaxHeap{ :nY2O
XMN:]!1J
void init(int[] data){ 7 Cqcb>\X
this.queue=new int[data.length+1]; 0u
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for(int i=0;i queue[++size]=data; (oz$B0HO:
fixUp(size); lK7m=[j
} ow'Vz
Ay-
} Mj=$y?d ]
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private int size=0; Ey[On^$
cE'L% Z
private int[] queue; y3u+_KY-
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public int get() { B@YyQ'
return queue[1]; #K\?E.9h
} }G <T :(a
58xnB!h\}
public void remove() { %(/!ljh_
SortUtil.swap(queue,1,size--); VZn=rw
fixDown(1); 7%?jL9Vw
} QnouBrhO
file://fixdown yF._*9Q3hK
private void fixDown(int k) { FyoEQ%.bI
int j; B$Z3+$hfF
while ((j = k << 1) <= size) { P,DC 7\
if (j < size %26amp;%26amp; queue[j] j++; T'-FV
if (queue[k]>queue[j]) file://不用交换 "t=hzn"~%
break; Joe_PS
SortUtil.swap(queue,j,k); SlLw{Yb7\.
k = j; R8ONcG
} o PKr*
`'
} K0+.q?8D|
private void fixUp(int k) { 7xo4-fIuT
while (k > 1) { RC#C\S6
int j = k >> 1; NSAF4e
if (queue[j]>queue[k]) y&[y=0!
break; |! SOG
SortUtil.swap(queue,j,k); I&|f'pn^<
k = j; |C%Pjl^YkV
} Scm36sT{
} J
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&hIRd,1#
} %6%<?jZ
W/ay.I
} Z=5qX2fy1*
3-Dt[0%{
SortUtil: w2O!M!1
98jN)Nl,oD
package org.rut.util.algorithm; xda;
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W=B"Q
qL
import org.rut.util.algorithm.support.BubbleSort; AwUi+|7r])
import org.rut.util.algorithm.support.HeapSort; RZpcXv
import org.rut.util.algorithm.support.ImprovedMergeSort; <N,)G
|&
import org.rut.util.algorithm.support.ImprovedQuickSort; DHC+C4
import org.rut.util.algorithm.support.InsertSort; RPnRVJ&"Z
import org.rut.util.algorithm.support.MergeSort; Mp$@`8X`
import org.rut.util.algorithm.support.QuickSort; `p kMN
import org.rut.util.algorithm.support.SelectionSort; _M[,!{ C
import org.rut.util.algorithm.support.ShellSort; {%v-(
q@5K6yE
/** Y<"7x#AB!
* @author treeroot cV{%^0?D
* @since 2006-2-2 5v)(8|.M
* @version 1.0 }ov&.,vQ
*/ Dq@2-Cv
public class SortUtil { q-ES6R
public final static int INSERT = 1; W,@
If}
public final static int BUBBLE = 2; &5{xXWJK
public final static int SELECTION = 3; 1{Mcs%W;w5
public final static int SHELL = 4; e,_-Je
public final static int QUICK = 5; BElJB&I
public final static int IMPROVED_QUICK = 6; @.$Xv>Jt$
public final static int MERGE = 7; q}BzyC=:n
public final static int IMPROVED_MERGE = 8; gnp~OVDqfL
public final static int HEAP = 9; ^04Q %,
tcr//
public static void sort(int[] data) { NC qo@vE
sort(data, IMPROVED_QUICK); t2" (2
} !
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private static String[] name={ *Oc.9 F88"
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Awv`) "RAR
}; XMB[h
;;$# )b
private static Sort[] impl=new Sort[]{ C${S^v
new InsertSort(), ajRSMcKb7i
new BubbleSort(), p Rdk>Ph
new SelectionSort(), PfS:AIy
new ShellSort(), 2jsw"aHW
new QuickSort(), 9z;HsU v
new ImprovedQuickSort(), )? M9|u
new MergeSort(), |sZ!
new ImprovedMergeSort(), l+][V'zL
new HeapSort() t%zpNd2lk
}; ,h\s F#|
0n ~ Zz
public static String toString(int algorithm){ K-<^$VWh
return name[algorithm-1]; kc'pN&]r:
} X0;4_,=
qa(>wR"mT
public static void sort(int[] data, int algorithm) { ,6!rR,0
impl[algorithm-1].sort(data); plu$h-$d
} p47S^gW
J?JeU/:+
public static interface Sort { GSoZx0
public void sort(int[] data); qrvsjYi*w
} 'Djm0
Uq_j\A;c
public static void swap(int[] data, int i, int j) { '/Bidb?
int temp = data; UmnE@H"t$\
data = data[j]; e6X[vc|Y}
data[j] = temp; -"Y{$/B
} D9mz9
} 2-zT$`[]J