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。 SP.k]@P
插入排序: B`|f"+.
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package org.rut.util.algorithm.support; $7" Y/9Y
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import org.rut.util.algorithm.SortUtil; (@m/j2z
/** H-\Ym}BGu
* @author treeroot !#d5hjoX
* @since 2006-2-2 &+ "<ia(
* @version 1.0 `R;i1/
*/ LI*=T
public class InsertSort implements SortUtil.Sort{ \#4mPk_"
fqjBor}
/* (non-Javadoc) DSQ2|{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9TX2h0U?
*/ LAkBf
public void sort(int[] data) { PriLV4?
int temp; @Bds0t
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {7jl) x3l
} JkhW LQ>o
} Dj>eAO>
} djH&)&q!
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} Qk? WX
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冒泡排序: {0~\ T[qm
4sRM"w;
package org.rut.util.algorithm.support; fV@[S
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import org.rut.util.algorithm.SortUtil; ~UJ.A<>Fh
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/** vJxEF&X
* @author treeroot UB/"&I uo
* @since 2006-2-2 h4jo<yp\
* @version 1.0 v4<W57oH
*/ elAWQE us
public class BubbleSort implements SortUtil.Sort{ !B 4z U:d
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/* (non-Javadoc) )X?oBNsj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FRuPv6
*/ {CV+1kz
public void sort(int[] data) { r4pX47H
int temp; 58XZ]Mc0
for(int i=0;i for(int j=data.length-1;j>i;j--){ " i:[|7
if(data[j] SortUtil.swap(data,j,j-1); q>Di|5<y
} NB1KsvD{
} 1Y87_o'd
} r1}^\C
} "MU-&**
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} MA,*$BgZ
ltfKqY-
选择排序: <3!Al,!ej@
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package org.rut.util.algorithm.support; vhPlH0
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import org.rut.util.algorithm.SortUtil; s3eS` rK-
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/** (P`=9+
* @author treeroot :h5G|^
* @since 2006-2-2 $m;`O_-T
* @version 1.0 b3EGtC}^
*/ 'y\Je7
public class SelectionSort implements SortUtil.Sort { 23P&n(.
+l^tT&s;f
/* u"q56}Q?]
* (non-Javadoc) vP x/&x
* a M9v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u8T@W}FX
*/ uLafO=Q
public void sort(int[] data) { 1l$2T
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int temp; (IBT|K
for (int i = 0; i < data.length; i++) { QuqznYSY{
int lowIndex = i; dpTsTU!\
for (int j = data.length - 1; j > i; j--) { I%u 2 ce
if (data[j] < data[lowIndex]) { "Yh;3tI4*
lowIndex = j; GQ;0KIN
} @oE
5JM
}
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SortUtil.swap(data,i,lowIndex); RI@\cJ\}
} T/\RViG3
} Vx(*OQ
/1MmOB
} ka~_iUU4
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Shell排序: GuO}CQs^W
:a6LfPEAX
package org.rut.util.algorithm.support; K_;vqi^1^&
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import org.rut.util.algorithm.SortUtil; H0;Iv#S!
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/** :ZM9lBY h
* @author treeroot uX*2Rs$s
* @since 2006-2-2 4~,Z ' k
* @version 1.0 d
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*/ H"FK(N\
public class ShellSort implements SortUtil.Sort{ *{3d+j/?/
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/* (non-Javadoc) \P*_zd@%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l)9IgJ|<b
*/ bZNqv-5 4h
public void sort(int[] data) { B W<Dmn
for(int i=data.length/2;i>2;i/=2){ +b(};(wL
for(int j=0;j insertSort(data,j,i); i'm<{v
} 5Jbwl$mZ
} ^1najUpQ_n
insertSort(data,0,1); $DoR@2~y
} -N8rs[c
x="Wqcnj{
/** `G qe]ZE#"
* @param data |Y>Jf~SN
* @param j u#,8bw?1
* @param i O;H6`JQ
*/ 5p (zhfuG
private void insertSort(int[] data, int start, int inc) { _K o#36.S
int temp; V4+|D2
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eR$@Q
} LH5Z@*0#
} }T@=I&g;
} ~Q&J\'GQH
HU'Mi8xxy
} M76p=*
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快速排序: inWLIXC,
--WQr]U/
package org.rut.util.algorithm.support; /K#k_k
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import org.rut.util.algorithm.SortUtil; m\56BP-AM
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/** ~w?02FU
* @author treeroot fzIs^(:fl
* @since 2006-2-2 ; ~pgF_
* @version 1.0 r[S(VPo[()
*/ J#I RbO)
public class QuickSort implements SortUtil.Sort{ +/ZIs|B4,z
M7TLQqaF
/* (non-Javadoc) qYC&0`:H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !;eE7xn &
*/ F\ B/q
public void sort(int[] data) { z&6_}{2,]
quickSort(data,0,data.length-1); 8zp?WUb
} ./#YUIC
private void quickSort(int[] data,int i,int j){ l~i?
int pivotIndex=(i+j)/2; dH y9
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file://swap aKDY_D
SortUtil.swap(data,pivotIndex,j); 7?*+,Fo#
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int k=partition(data,i-1,j,data[j]); k =5k)}i
SortUtil.swap(data,k,j); 5(+9a
if((k-i)>1) quickSort(data,i,k-1); Xs~'M/>
O
if((j-k)>1) quickSort(data,k+1,j); GbSCk}>
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} }bb,Iib
/** gXxi; g
* @param data <Ht"t]u*Bn
* @param i
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* @param j 1Gsh%0r3
* @return /eV)5`V
*/ V$?6%\M^*
private int partition(int[] data, int l, int r,int pivot) { W/qXQORv
do{ L7$f01*
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); KN}#8.'>3
SortUtil.swap(data,l,r); E_
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} j%6p:wDl
while(l SortUtil.swap(data,l,r); ]SQ+r*a
return l; fx;rMGa
} )x6&Y
dKzG,/1W[m
} M~A#_%2U
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改进后的快速排序: `?z('FV
N3%#JdzZ$
package org.rut.util.algorithm.support; e$[O J<t
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import org.rut.util.algorithm.SortUtil; wW%b~JX
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/** i!a!qE.1
* @author treeroot }j/\OY _&
* @since 2006-2-2 Rw?w7?I
* @version 1.0 "*bLFORkq'
*/ K(+=V)'Dz
public class ImprovedQuickSort implements SortUtil.Sort { UD-+BUV
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private static int MAX_STACK_SIZE=4096; QLJ\>
private static int THRESHOLD=10; `=(<!nXJx
/* (non-Javadoc) C
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bBi>BP=
*/ ),x0G*oebj
public void sort(int[] data) { }b4 56J
int[] stack=new int[MAX_STACK_SIZE]; %3`*)cp@
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int top=-1; dcf,a<K\
int pivot; jr`swyg
int pivotIndex,l,r; 2xNR=u`
7nB4(A2[S4
stack[++top]=0; hk?i0#7W
stack[++top]=data.length-1; {y"Kn'1
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while(top>0){ nE]rPRU}[
int j=stack[top--]; YuhfPa
int i=stack[top--]; ;>PHkJQ
sPNm.W$_
pivotIndex=(i+j)/2; 1UMEbb
pivot=data[pivotIndex]; /4;mjE
y6$a:6
SortUtil.swap(data,pivotIndex,j); JG;}UuHYM
-b!?9T?}
file://partition RvR.t"8
l=i-1; gt8dFcm|s
r=j; f#l9rV"@g
do{ ^&;,n.X5Z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [A~?V.G
SortUtil.swap(data,l,r); #._JB-,'
} _WS8I>
while(l SortUtil.swap(data,l,r); q]4h#?.-1v
SortUtil.swap(data,l,j); =X'[r
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jh:,
if((l-i)>THRESHOLD){ #ft9ms#N
stack[++top]=i;
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stack[++top]=l-1; o33t~@ RX
} w[GEm,ZC
if((j-l)>THRESHOLD){ CbZ;gjgY*
stack[++top]=l+1; vAM1|,U
stack[++top]=j; lf-.c$.>
} kwp%5C-S
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} ozY$}|sjDT
file://new InsertSort().sort(data); H^'%$F?Ss
insertSort(data); G ]h
} F:jNv3W1
/** +(!/(2>~
* @param data >a975R*g
*/ \:@6(e Bh
private void insertSort(int[] data) { Wrp~OF0k
int temp; qlM<X?
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o}=*E
} MsI R ~
} E{)X ;kN=
} 4rDVCXE
;=joQWNDm
} !Ge;f/@
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归并排序: e#hg,I
.c>6}:ye
package org.rut.util.algorithm.support; 9 m8KDB[N
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import org.rut.util.algorithm.SortUtil; Ko&4{}/
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/** GG%;~4#2
* @author treeroot P<>NV4
* @since 2006-2-2 &j~9{ C
* @version 1.0 f@`|2wG
*/ @q!T,({kx
public class MergeSort implements SortUtil.Sort{ BvvjaC
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/* (non-Javadoc) Lv@WI6DM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z'A 3\f
*/ qMEd
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public void sort(int[] data) { dA~_[x:Z
int[] temp=new int[data.length]; u"zR_CzYc
mergeSort(data,temp,0,data.length-1); %KVmpWku
} or#]
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JFI*Pt;X9
private void mergeSort(int[] data,int[] temp,int l,int r){ sPc}hG+N
int mid=(l+r)/2; E-1u_7
if(l==r) return ; Z;N3mD+\ye
mergeSort(data,temp,l,mid); *04}84?:
mergeSort(data,temp,mid+1,r); ekY)?$v3
for(int i=l;i<=r;i++){ .(/HU Qn
temp=data; aA$\iFYA
} P$z%:Q
int i1=l; ;i.MDW^N
int i2=mid+1; tQG'f*4
for(int cur=l;cur<=r;cur++){ GH':Yk
if(i1==mid+1) 5=*i!c
_m
data[cur]=temp[i2++]; <#8}![3Q
else if(i2>r) <}RD]Sc$1
data[cur]=temp[i1++]; HY_>sD
else if(temp[i1] data[cur]=temp[i1++]; CF3x\6.q}
else R<fF
^^
data[cur]=temp[i2++]; p8XvfM
} 4RctYMz
} -uN{28;@
6|lsG6uf
} 0,-]O=
X9PbU1o;
改进后的归并排序: @-K[@e/uwy
;07$ G+['
package org.rut.util.algorithm.support; Xl1% c7r.1
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import org.rut.util.algorithm.SortUtil; 9:g A0Z
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/** E5A"sB
* @author treeroot 3f$n8>mq
* @since 2006-2-2 s#<fj#S
* @version 1.0 t{B@k[|
*/ dSKvs"
public class ImprovedMergeSort implements SortUtil.Sort { 5s\;7>
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private static final int THRESHOLD = 10; VMF?qT3Nd
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/* W{Je)N
* (non-Javadoc) phG*It}
* F3vywN1$,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v Cej( ))
*/ 59$PWfi-\
public void sort(int[] data) { ?7pn%_S
int[] temp=new int[data.length]; > dVhIbG
mergeSort(data,temp,0,data.length-1); ~-NSIV:f
} yp4[EqME
q_^yma
private void mergeSort(int[] data, int[] temp, int l, int r) { E$z- |-{>
int i, j, k; cQxUEY('+
int mid = (l + r) / 2; ez9F!1
if (l == r) Py#EjF12
return; #-Mr3
if ((mid - l) >= THRESHOLD) Wm" q8-<<
mergeSort(data, temp, l, mid); qi~-<qW
else 3]'ab-,Vp
insertSort(data, l, mid - l + 1); t$,G%micj
if ((r - mid) > THRESHOLD) LmyaC2
mergeSort(data, temp, mid + 1, r); Uc_}="
else g$2#TWW5
insertSort(data, mid + 1, r - mid); o"0~
/Z]nV2$n)V
for (i = l; i <= mid; i++) { I9L3Y@(f6m
temp = data; zqrqbqK5R
} 8ZbXGQ
for (j = 1; j <= r - mid; j++) { 1!V[fPJ
temp[r - j + 1] = data[j + mid]; \15'~]d
} g]JJ!$*1
int a = temp[l]; Z" H; t\P
int b = temp[r]; *tT}N@<%
for (i = l, j = r, k = l; k <= r; k++) { PA803R74
if (a < b) { .7
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data[k] = temp[i++]; SIm1fC
a = temp; x6JV@wA&
} else { 2gklGDJD
data[k] = temp[j--]; z&n2JpLY7
b = temp[j]; ;X]B0KFe7
} I)#8}[vK
} rSt5@f?
} 'hWA&Xx+
` ;mQ"lO
/** #hn
* @param data R+ \%
* @param l d0}(d Gl
* @param i K"t?
*/ yKrbGK*=_
private void insertSort(int[] data, int start, int len) { BI%~0Gj8
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -1B. A
} 6ERMn"[_w
} #wT6IU1
} x&J\ swN9
} KwMt@1Z
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堆排序: y@$E5sz
l="X|t
package org.rut.util.algorithm.support; dHiir&Rd9`
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import org.rut.util.algorithm.SortUtil; ,<K+.7,)E
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/** %E#Ubm!
* @author treeroot b==jlYa=
* @since 2006-2-2 qov<@FvE0
* @version 1.0 d])ctxB
*/ e0TxJ*
public class HeapSort implements SortUtil.Sort{ RLL
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/* (non-Javadoc) 6
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
B*}]'
*/ iex%$> "
public void sort(int[] data) { h*y+qk-!\g
MaxHeap h=new MaxHeap(); aY,Bt
h.init(data);
*p9)5
for(int i=0;i h.remove(); B%u[gNZ
System.arraycopy(h.queue,1,data,0,data.length); +J{ErsG?6P
} 1E||ft-1i*
XRkUv>Yk
private static class MaxHeap{ q,#s m'S
G Wa6FX:/
void init(int[] data){ "1a!]45 +
this.queue=new int[data.length+1]; 5*A5Y E-
for(int i=0;i queue[++size]=data; ^1c7\"{
fixUp(size); RFS}!_t+|
} aqk$4IG
} Op9 ^Eu%n
re%XaL
private int size=0; Hicd
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@$5~`?
private int[] queue; W{q
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hTO2+F*
public int get() { Md>C!c
return queue[1]; t {1 [Ip
} w+j\Py_G"
2.Ww(`swL
public void remove() { <G<5)$
S
SortUtil.swap(queue,1,size--); E <j=5|0t
fixDown(1); 6J JA"] `
} S}h
d, "I
file://fixdown 3 ;F
private void fixDown(int k) { F[O147&C
int j; ,)d`_AD+5
while ((j = k << 1) <= size) { ,KM%/;1Dm
if (j < size %26amp;%26amp; queue[j] j++; ` W);+s
if (queue[k]>queue[j]) file://不用交换
r90tXx
break; `EMGrw_
SortUtil.swap(queue,j,k); \fC;b"j
k = j; bG"FN/vg
} r|ZB3L|7
} $$0<
&
private void fixUp(int k) { DC> R
while (k > 1) { RJ0,7E<B
int j = k >> 1; W!.FnM5x
if (queue[j]>queue[k]) }oG6XI9
break; iNi1+sm
SortUtil.swap(queue,j,k); LzLJ6A>;R
k = j; ]Z\ W%'q+
} l}-k>fug
} ziO(`"v
fX,O9d$
} WW3Jxd
A_ &IK;-go
} %YF
/=l
{_.(,Z{
SortUtil: mMZrBz7r
X#0yOSR
package org.rut.util.algorithm; 5M'cOJ
9cN@y<_I
import org.rut.util.algorithm.support.BubbleSort; $4ZV(j]
import org.rut.util.algorithm.support.HeapSort; By!u*vSev
import org.rut.util.algorithm.support.ImprovedMergeSort; FVP,$
import org.rut.util.algorithm.support.ImprovedQuickSort; +&f_k@+
import org.rut.util.algorithm.support.InsertSort; ,Iz9!i
J"
import org.rut.util.algorithm.support.MergeSort; tGl|/
import org.rut.util.algorithm.support.QuickSort; v_%6Ly
import org.rut.util.algorithm.support.SelectionSort; ("}Hs[
import org.rut.util.algorithm.support.ShellSort; yr>J^Et%_
p}!)4EI=
/** O\;Lb[`lb
* @author treeroot IRk)u`
* @since 2006-2-2 j?$B@Zk
* @version 1.0 DH_~,tK9
*/ [{xY3WS
public class SortUtil { 6.45^'t]
public final static int INSERT = 1; <=%[.. (S
public final static int BUBBLE = 2; yRyRH%p)
public final static int SELECTION = 3; 7u^wO<
public final static int SHELL = 4; bL0]Yuh
public final static int QUICK = 5; ~MB)}!S:
public final static int IMPROVED_QUICK = 6; /#:*hn
public final static int MERGE = 7; ]x8Y]wAU&{
public final static int IMPROVED_MERGE = 8; jM6$R1HX
public final static int HEAP = 9; F+R1}5-3cl
ZT/f
public static void sort(int[] data) { d!&LpODI]*
sort(data, IMPROVED_QUICK); 0]DX KI
} x2I|iA =
private static String[] name={ LHOt(5VY
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" kn3GgdU
}; FO!0TyQ
q2*)e/}H
private static Sort[] impl=new Sort[]{ r:0RvWif
new InsertSort(), Dvz 6 E
new BubbleSort(), VY~*QF~P
new SelectionSort(), =|$U`~YB
new ShellSort(), L&NpC&>wD
new QuickSort(), qx >Z@o
new ImprovedQuickSort(), ';v2ld 9
new MergeSort(), cJwe4c6.m
new ImprovedMergeSort(), Z9% u,Cb
new HeapSort() Pk5\v0vkg
}; >yVrIko
^56D)A=
public static String toString(int algorithm){ 3#udzC
return name[algorithm-1]; V5h_uGOD
} e>!]_B1ad
5gx;Bp^_
public static void sort(int[] data, int algorithm) { *) \y52z
impl[algorithm-1].sort(data); 5$Kv%U
} H)*%e G~
K|~!oQ
public static interface Sort { q(s0dkrj
public void sort(int[] data); {t0!N]'
} +dq2}gM
R"t2=3K
public static void swap(int[] data, int i, int j) { +ZE"pA^C
int temp = data; y\iECdPU
data = data[j]; u5U^}<}y}
data[j] = temp; d@Bd*iI<
} '{JMWNY
} {~EsO1p