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。 *ma/_rjK
插入排序: }FMl4 _}u
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package org.rut.util.algorithm.support; *4qsM,t
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import org.rut.util.algorithm.SortUtil; AEnS_Q
/** FzpWT-jnDd
* @author treeroot Xt=&
* @since 2006-2-2 @\!wW-:A
* @version 1.0 dtM@iDljj
*/ 2ZtqZ64i
public class InsertSort implements SortUtil.Sort{ %T6#c7U_
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/* (non-Javadoc) vEzzdDwi6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jD^L <
*/ $hSu~}g
public void sort(int[] data) { *-|+phim
int temp; o Ayk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Op)0D:BmR
} u."fJ2}l0X
} Q'+N72=
} 0dkM72p
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} L''0`a. +S
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冒泡排序: faO8
&
UWn}0:6t
package org.rut.util.algorithm.support; i8B%|[nm
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import org.rut.util.algorithm.SortUtil; +zs6$OI]V
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/** XFu@XUk!K
* @author treeroot N0vd>b
* @since 2006-2-2 HqXo;`Yy}
* @version 1.0 E;4Ns
*/ 2hJ{+E.m
public class BubbleSort implements SortUtil.Sort{ M+hc,;6
jq0tMTb%L
/* (non-Javadoc) 0"2 [I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5h:SH]tn8]
*/ ^2kWD8c*
public void sort(int[] data) { Yn<0D|S;X
int temp; uAjGR
for(int i=0;i for(int j=data.length-1;j>i;j--){ <Z m ,q}
if(data[j] SortUtil.swap(data,j,j-1); gv[7h'}<
} 5&X
} ~M'\9
} G'Q7(c
} )%y~{j+ M
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} rd,mbH[<C
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选择排序: u4<r$[]V
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package org.rut.util.algorithm.support; HJJ^pk&
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import org.rut.util.algorithm.SortUtil; YQ]H3GA
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/** xeI ,Kz."
* @author treeroot ,K9UT#h
* @since 2006-2-2 `C*!de]Y%
* @version 1.0 f<w*l<@
*/ VNYLps@4H
public class SelectionSort implements SortUtil.Sort { @Qs-A^.
1=;QWb6
/* m|]^f;7z
* (non-Javadoc) D+SpSO7yg
* Nr[Rp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \OU+Kl<
*/ YjX=@
public void sort(int[] data) { 42wcpSp
int temp; Mb>6.l
for (int i = 0; i < data.length; i++) { CD&m4^X5D
int lowIndex = i; AltE~D/4
for (int j = data.length - 1; j > i; j--) { +uLo~GdbE
if (data[j] < data[lowIndex]) { 87^
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lowIndex = j; Agi1r]W
} *cf"l
} 8zc!g|5"
SortUtil.swap(data,i,lowIndex); +
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} P+b^;+\1s
} Oq2H>eW`f
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} z;/'OJ[.
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Shell排序: og\XLJ}_
x>J3tp$2
package org.rut.util.algorithm.support; WvJ?e
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import org.rut.util.algorithm.SortUtil; 5i^vN"J
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/** (Z$6JNkz
* @author treeroot >o} ati
* @since 2006-2-2 s =5H.q%PV
* @version 1.0 q],R6GcVr
*/ P\s+2/
public class ShellSort implements SortUtil.Sort{ O2,g]t~C
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/* (non-Javadoc) 5qr!OEF2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vf yva
*/ 2wBU@T1
public void sort(int[] data) { GiZ'IDV
for(int i=data.length/2;i>2;i/=2){ !p&'so^-W
for(int j=0;j insertSort(data,j,i); "<2bjy
} AY;+Ws
} v 2 GhR*
insertSort(data,0,1); O<h#|g1
} `az`?`i7
Ozv.;}SE
/** vs@:L)GW\
* @param data 7:L~n(QpP
* @param j 668bJ.M\O
* @param i U(N$6{i_
*/ M([H\^\:
private void insertSort(int[] data, int start, int inc) { ~yi&wbTjM
int temp; \!QF9dP4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =Yj[MVn
} lkZC?--H
} I7PWOd
} 5tU"|10m3
5)zB/Ta<
} nTU~M~gky
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快速排序: (d;(FBk='
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package org.rut.util.algorithm.support; BNCJT$tYX
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import org.rut.util.algorithm.SortUtil; t60/f&A#7H
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/** &iOtw0E
* @author treeroot Hm*vKFhz
* @since 2006-2-2 L||yQH7n
* @version 1.0 |2<f<k/UT
*/ %gMpV
public class QuickSort implements SortUtil.Sort{ j$|C/E5?
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/* (non-Javadoc) ];d:z[\P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C5 5n
*/ Kg`x9._2
public void sort(int[] data) { 7=.VqC^
quickSort(data,0,data.length-1); pmyM&'#Id
} Au._n,<
private void quickSort(int[] data,int i,int j){ +@uC:3jM
int pivotIndex=(i+j)/2; ^Ai_/! "
file://swap &&nO]p`
SortUtil.swap(data,pivotIndex,j); p\_qHq\;j
GLQvAHC
int k=partition(data,i-1,j,data[j]); ]GtR8w@w
SortUtil.swap(data,k,j); =Xjuz:9D~
if((k-i)>1) quickSort(data,i,k-1); r)5\3j[P
if((j-k)>1) quickSort(data,k+1,j); A] ?O&m|
d+2O^of:T
} J8v:a`bX&
/** h==GdS4
* @param data M y"!j,Up
* @param i C9g~l}=$&
* @param j 9T,QWk
* @return xnQGCw?S&}
*/ O4PdN?
private int partition(int[] data, int l, int r,int pivot) { :_\!t45
do{ '+I
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K}=8:BaUL
SortUtil.swap(data,l,r); UVCMB_T
} .&Pe7`.BE
while(l SortUtil.swap(data,l,r); i5<Va@ru!s
return l; Wx|6A#cg!
} <oaBh)=7
:z} _y&]
} ~<aeA'>OA
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改进后的快速排序: ?*R^?[
SxW}Z_8x
package org.rut.util.algorithm.support; p@8^gc
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import org.rut.util.algorithm.SortUtil; FV6he[,
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/** =E}%>un
* @author treeroot `{|}LFS>
* @since 2006-2-2 eN<pU%7
* @version 1.0 \m~\,em
*/ v6P~XK}G
public class ImprovedQuickSort implements SortUtil.Sort { x\bR j>%(
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private static int MAX_STACK_SIZE=4096; ;Q>3N(
private static int THRESHOLD=10; D@(M+u9/%
/* (non-Javadoc) ul=a\;3x#|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?J@?,rZQ^V
*/ x$5nLS2.
public void sort(int[] data) { zj$_iB`9
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; 8
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int pivot; tD~PvUJ
int pivotIndex,l,r; 1|EU5<
p-yOiG8b}
stack[++top]=0; a,57`Ks+n<
stack[++top]=data.length-1; >,"D9!
!!+/Wgd:6
while(top>0){ [5p7@6:$u
int j=stack[top--]; KG-k$glD
int i=stack[top--]; ^8-~@01.`_
k|$"TFXx;
pivotIndex=(i+j)/2; QVG0>,+}$
pivot=data[pivotIndex]; ;c
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SortUtil.swap(data,pivotIndex,j); itC *Z6^
%I|+_ z&x
file://partition vBnKu
l=i-1; $XQ;~i
r=j; d1uG[
do{ IGK_1@tq
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Y0L5W;iM
SortUtil.swap(data,l,r); 27*(oT
} 1Oca@E\Z.
while(l SortUtil.swap(data,l,r); ^Azt.\fMX
SortUtil.swap(data,l,j); [zh4W*K_cq
"\zj][sL
if((l-i)>THRESHOLD){ _Xk03\n6
stack[++top]=i; L VU)W^
stack[++top]=l-1; 1IF'>*
} C DnR
if((j-l)>THRESHOLD){ 6N%L8Q
stack[++top]=l+1; .,ppGc|*
stack[++top]=j; [aWDD[#j~
} l)i&ATvCE
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} *_{l
file://new InsertSort().sort(data); p(H)WD
insertSort(data); "BLv4s|y7L
} "%}Gy>;
/** TJyH/C
* @param data Gdf1+mi
*/ XAQ\OX#
private void insertSort(int[] data) { %TW%|"v
int temp; ~`~%(DA=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '!+P{
} gI^L
9jE7
} (DG@<K,6
} ebO`A2V'(
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} xqQ~|
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归并排序: cXOje"5i
-40'[a9E
package org.rut.util.algorithm.support; ]F"(OWW
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import org.rut.util.algorithm.SortUtil; xf V,==uF
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/** _C< 6349w
* @author treeroot QD.zU/F~>
* @since 2006-2-2 7]/dg*A )C
* @version 1.0 K9e~Wl<3
*/ 2Y E;m&
public class MergeSort implements SortUtil.Sort{ 4T-,'P{?
>-_:*/66!
/* (non-Javadoc) 6?3/Ul}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J{Y6fHFi
*/ IgPV#
public void sort(int[] data) { ^eTDD
int[] temp=new int[data.length]; T:K"
mergeSort(data,temp,0,data.length-1); #D|!
.I)
} sorSyuGr
&Q-[;
private void mergeSort(int[] data,int[] temp,int l,int r){ H
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int mid=(l+r)/2; w+Z- -@\
if(l==r) return ; "*Lj8C3|n
mergeSort(data,temp,l,mid); %sO Wg.0_
mergeSort(data,temp,mid+1,r); 5u2{n rc
for(int i=l;i<=r;i++){ XKz;o^1a^
temp=data; )z2|"Lp
} 5y1or
int i1=l; .-SDo"K.h
int i2=mid+1; g
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for(int cur=l;cur<=r;cur++){ D~G5]M,}$
if(i1==mid+1) ]}mly`Fw
data[cur]=temp[i2++];
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else if(i2>r) :r1;}hIA9
data[cur]=temp[i1++]; u-AWJc+F .
else if(temp[i1] data[cur]=temp[i1++]; V,>+G6e
else *'UhlFed
data[cur]=temp[i2++]; 0K=Qf69Y
} CCbkxHMf|!
} .dD9&n;#^
0Y2\n-`z
} g\ErJ+i
XIr{U5$<6
改进后的归并排序: 2Pbe~[
xN#bzma
package org.rut.util.algorithm.support; vOos*&
RL?u n}Qa
import org.rut.util.algorithm.SortUtil; Ad dGB^7yl
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/** k_,MoDz
* @author treeroot 5h_<R!jA
* @since 2006-2-2 !UBy%DN~k
* @version 1.0 [8,PO
*/ O0@w(L-
public class ImprovedMergeSort implements SortUtil.Sort { 6eOrs-ty
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private static final int THRESHOLD = 10; NJn&>/vM
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/* Z} c'Bm(
* (non-Javadoc) iLF^%!:X%
*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kP)YgkE
*/ VLf
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public void sort(int[] data) { `@h:_d
int[] temp=new int[data.length]; m_c O<LB
mergeSort(data,temp,0,data.length-1); DZ^=*.
} X Y~;)<s_
HH"$#T^-
private void mergeSort(int[] data, int[] temp, int l, int r) { , p_G/OU
int i, j, k; Wm<z?.lS
int mid = (l + r) / 2; ;KZrl`
if (l == r) .4wTjbO6
return; fJX\'Rc\
if ((mid - l) >= THRESHOLD) +IG1IF
mergeSort(data, temp, l, mid); }KK2WJp#M
else }0$mn)*k
insertSort(data, l, mid - l + 1); vT?Q^PTO
if ((r - mid) > THRESHOLD) .
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mergeSort(data, temp, mid + 1, r); Q(lku"U'
else BR;QY1
insertSort(data, mid + 1, r - mid);
RXBb:f
pJd 0k"{
for (i = l; i <= mid; i++) {
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temp = data; ;SfNKu
} U);OR
for (j = 1; j <= r - mid; j++) { 4py(R-8\
temp[r - j + 1] = data[j + mid]; 1 ojhh7<
} 9u?(^(.
int a = temp[l]; L59bu/LfL
int b = temp[r]; HeCcF+
for (i = l, j = r, k = l; k <= r; k++) { XdcG0D^
if (a < b) { 9ftN8Svw
data[k] = temp[i++]; ]$3+[9x'
a = temp; mV<i JZh
} else { CoJ55TAW
data[k] = temp[j--]; ^"1TPd|
b = temp[j]; cFLd)mt/
} (B&h;U$HAH
} $'^&\U~?
} YZibi
X6xx2v%D
/** [Gh"ojt]w
* @param data opdu=i=E
* @param l !6Q`>s]
* @param i \ EZ+#3u
*/ k_!+V`Ro#
private void insertSort(int[] data, int start, int len) { ~wTX>qV
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); X:Q$gO?[4
} gA_krK,Z
} vVAb'`ysv
} 7$
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} qbXz7s*{
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堆排序: job[bhK'Jt
sAVefL?
package org.rut.util.algorithm.support; @&5 A&(
4b4QbJ$
import org.rut.util.algorithm.SortUtil; aM$\#Cx
eaQ90B4
/** nX._EC
* @author treeroot 6yI}1g
* @since 2006-2-2 k,rWa
* @version 1.0 FSU<Y1|XM
*/ H>.B99vp
public class HeapSort implements SortUtil.Sort{ >dk9f}7-
('t kZt%8
/* (non-Javadoc) >!}`%pk(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QsOhz
*/ =Ey`M#t;
public void sort(int[] data) { n>P!u71
MaxHeap h=new MaxHeap(); Noh?^@T`Ov
h.init(data); IZ 8y}2
for(int i=0;i h.remove(); _R7 w?!t8
System.arraycopy(h.queue,1,data,0,data.length); t}Ss=0dJO
} :mpiAs<%U"
=OYQM<q
private static class MaxHeap{ W/r^ugDV
I]X
void init(int[] data){ cOkgoL" 4
this.queue=new int[data.length+1]; H?uukmZl
for(int i=0;i queue[++size]=data; !%xP}{(7
fixUp(size); ' "'Btxz
} H] k'?;
} jJ~Y]dQi
zE`R,:VI
private int size=0; 0+EN@Y^dAV
/)9W1U^B
private int[] queue; ,)h)5o(?
B!b sTvX
public int get() { B
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return queue[1]; ''S&e
} .
uR M{Bs
m=TJDr-
public void remove() { g_w&"=.jBq
SortUtil.swap(queue,1,size--); aI(>]sWJ
fixDown(1); ,+._;[k
} z856 nl
file://fixdown >|3a
9S
private void fixDown(int k) { 0@)%h&mD
int j; frN3S
while ((j = k << 1) <= size) { Km3&N
if (j < size %26amp;%26amp; queue[j] j++; NP/>H9Q2%
if (queue[k]>queue[j]) file://不用交换 @T&t.|`
break; -[R!O'N9
SortUtil.swap(queue,j,k); F
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k = j; Y-p<qL|_
} \k@Z7+&7
} dB;3.<S=
private void fixUp(int k) { "&lN\&:
while (k > 1) { Z0ReWrl;`
int j = k >> 1; ~ y;y(4<
if (queue[j]>queue[k]) jxw_*^w"
break; R8&|+ya
SortUtil.swap(queue,j,k); <y)E>Fl
k = j; nrpI5t.b
} M3pjXc<O
} f vLC_'M
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} }Qrab#v
WM,i:P)b
} 4/*H.Fl
~p*1:ij
SortUtil: ],lV}Mlg*
|d7$*7TvV
package org.rut.util.algorithm; }+RB=#~o
6)e5zKW!?
import org.rut.util.algorithm.support.BubbleSort; ?znSx}t
import org.rut.util.algorithm.support.HeapSort; C+%K6/J(
import org.rut.util.algorithm.support.ImprovedMergeSort; lIf(6nm@
import org.rut.util.algorithm.support.ImprovedQuickSort; ^0tw%6:
import org.rut.util.algorithm.support.InsertSort; @Bs0Avj.
import org.rut.util.algorithm.support.MergeSort; 4h|dHXYZ
import org.rut.util.algorithm.support.QuickSort; otr>3a*'
import org.rut.util.algorithm.support.SelectionSort; B@t'U=@7
import org.rut.util.algorithm.support.ShellSort; "tu*YNP\Q
5Qa
zHlJ
/** :0^s0l
* @author treeroot 5j^NV&/_
* @since 2006-2-2 C3VLV&wF
* @version 1.0 w([$@1]
*/ sR=/%pVN
public class SortUtil { 9z ?7{2C
public final static int INSERT = 1; c
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public final static int BUBBLE = 2; u&]vd /
public final static int SELECTION = 3; $%2H6Eg0
public final static int SHELL = 4; /_\W+^fE
public final static int QUICK = 5; 4MW ]EQ-
public final static int IMPROVED_QUICK = 6; j@1)K3Hga
public final static int MERGE = 7; fgF;&(b
public final static int IMPROVED_MERGE = 8; Ec]|p6a3
public final static int HEAP = 9; o6}n8U}bk
~}% ~oT
public static void sort(int[] data) { x5Zrz<Y$w
sort(data, IMPROVED_QUICK); RuAlB*
} A^Cj1:,
private static String[] name={ ohQAA h
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 4TRG.$2[
}; !.Zt[ g}
@CQb[!9C
private static Sort[] impl=new Sort[]{ rdJB*Rlkh
new InsertSort(), 5bX6#5uP1
new BubbleSort(), ii4B?E
new SelectionSort(), Mkv|TyC
new ShellSort(), M{N(~ql
new QuickSort(), w1|Hy2D`0
new ImprovedQuickSort(), MZv\ C
new MergeSort(), i$UQbd
new ImprovedMergeSort(), HJhH-\{@
new HeapSort() S>_27r{
}; ;-@=
;D2E_!N
dt
public static String toString(int algorithm){ |4b)>8TL/
return name[algorithm-1]; Imym+
} R+=a`0_S
#y; yN7W
public static void sort(int[] data, int algorithm) { BWUq%o,@g
impl[algorithm-1].sort(data); G '#41>q+
} g9mG`f
l]#!+@
public static interface Sort { F^kwdS
public void sort(int[] data); 5EeDHsvV9
} [}o~PN:sT(
5lmO:G1
public static void swap(int[] data, int i, int j) { H\G{3.T.9
int temp = data; cT'w=
data = data[j]; GJQc!cqk
data[j] = temp; Yx)o:#2
} I6w~H?ul@*
} B)=~8wsI:Z