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。 n]`]gLF\i
插入排序: G)%V 3h
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package org.rut.util.algorithm.support; {?0'(D7.
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import org.rut.util.algorithm.SortUtil; I`X!M!dB)
/** [`b,SX
x
* @author treeroot gac31,gH
* @since 2006-2-2 IDT\hTPIs
* @version 1.0 ?'+]d;UO&
*/ 5L[imO M0
public class InsertSort implements SortUtil.Sort{ D]fuX|f~ul
m+;U,[%[*E
/* (non-Javadoc) n=V|NrU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <O0tg[ub
*/ i0K 2#}=^
public void sort(int[] data) { PdqvXc
int temp; os"R'GYmf
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qe>_\-f
} Ye&/O<G'V
} \-pwA j?
}
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} kC%H E
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冒泡排序: cM'MgX9
?.Vuet
package org.rut.util.algorithm.support; CLzF84@W=
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import org.rut.util.algorithm.SortUtil; T&dNjx
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/** H\oxj,+N
* @author treeroot ]jxyaE&%4
* @since 2006-2-2 jH9PD8D\
* @version 1.0 @I?,!3`jS
*/ '1LN)Yw
public class BubbleSort implements SortUtil.Sort{ /~u^@@.
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/* (non-Javadoc) =o~+R\1ux+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yO7y`;Q(sF
*/ nt$PA(Y
public void sort(int[] data) { En9J7es_
int temp; X-((
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for(int i=0;i for(int j=data.length-1;j>i;j--){ 81x/bx@L%
if(data[j] SortUtil.swap(data,j,j-1); :XFQ}Cl
} LF!KP
} \O"H#gt
} m`-:j"]b$
} =K} Pfh
PL&>pM
} pLCj"D).M
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选择排序: 8xAI n>,_
oQ
r.cKD ?
package org.rut.util.algorithm.support; STjb2t,a
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import org.rut.util.algorithm.SortUtil; A?#i{R
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/** #;a+)~3*O
* @author treeroot hzr,
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* @since 2006-2-2 _]o7iqtv
* @version 1.0 #~-Xt!I
*/ f|B\Y/*X
public class SelectionSort implements SortUtil.Sort { e8> X5
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/* X5/j8=G H`
* (non-Javadoc) DSRc4|L
* #BP0MY&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2WH(c$6PWf
*/ 7QTS@o-
public void sort(int[] data) { 6AJ`)8HX
int temp; mz.,j(Ks-
for (int i = 0; i < data.length; i++) { m<3. X"-
int lowIndex = i; I\6C0x
for (int j = data.length - 1; j > i; j--) { %/w-.?bX
if (data[j] < data[lowIndex]) { w:%NEa,Z
lowIndex = j; eC"e
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} O713'i
} /} PdO
SortUtil.swap(data,i,lowIndex); m}?jU
} b}Gm{;s!
} L]z8'n,
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} /]z#V'
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Shell排序: 153*b^iDBh
YX,;z/Jw2
package org.rut.util.algorithm.support; >l)x~Bkf$j
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import org.rut.util.algorithm.SortUtil; ,^c-}`!K
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/** ,0h{RZKw
* @author treeroot qbq2Bi'a
* @since 2006-2-2 jW8ad{
* @version 1.0 8/R$}b><
*/ N*Q*>q
public class ShellSort implements SortUtil.Sort{ 2*w`l|Sx
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/* (non-Javadoc) <Nrtkf4-O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3Y)z{o>P
*/ >Um(gbG
public void sort(int[] data) { >ph=?MKD
for(int i=data.length/2;i>2;i/=2){ %1k"K~eu
for(int j=0;j insertSort(data,j,i); |;a$
l(~<
} 1VFCK&
} #]c_2V
insertSort(data,0,1); :*
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} =3'B$PY
Szu@{lpP@
/** 8v4krz<Iq
* @param data x'}zNEXI
* @param j K{I "2c
* @param i IxWi>8
*/ Gq1C"s$4'
private void insertSort(int[] data, int start, int inc) { 'j'6x'[>]
int temp; THOYx :Nr;
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .{t5_,P
} \\R<HuTY
} {f4jE#a>v
} 8~,zv_Pl
4>d]0=x
} 09vVCM;DY
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快速排序: >?JUGXAi'{
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package org.rut.util.algorithm.support; zwQ#Yvd
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import org.rut.util.algorithm.SortUtil; )!AH0p
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/** Z"Lr5'}
* @author treeroot /<T{g0s
* @since 2006-2-2 w]xr
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* @version 1.0 gA EB
*/ b(@GKH"W
public class QuickSort implements SortUtil.Sort{ Es}`SIe/
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/* (non-Javadoc) E]vox~xK>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;8MQ'#
*/ M*T!nwb
public void sort(int[] data) { :_HdOm
quickSort(data,0,data.length-1); au=@]n#<(
} W^HE1Dt]
private void quickSort(int[] data,int i,int j){ 6X'0 T}
int pivotIndex=(i+j)/2; k fY;
file://swap Xajt][
SortUtil.swap(data,pivotIndex,j); wU'+4N".
!}x-o`a5
int k=partition(data,i-1,j,data[j]); 5>S1lyam
SortUtil.swap(data,k,j); ^ux'-/
if((k-i)>1) quickSort(data,i,k-1); L"1AC&~u
if((j-k)>1) quickSort(data,k+1,j); =`(W^&|
2H8\P+
} cna%;f.
/** M).CyY;bm
* @param data Yevd h<
* @param i 8.wtv5eZ
* @param j \L?A4Qx)_
* @return PpLhj
*/ hd/'>]
private int partition(int[] data, int l, int r,int pivot) { ^pY8'LF6
do{ W"\`UzOLQ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T%"wz3~
SortUtil.swap(data,l,r); a|]deJU^
} ?)<zzL",
while(l SortUtil.swap(data,l,r); Xep2)3k>
return l; 2Gj)fMK38
} _@)-#7
b O}&i3.L;
} +,7vbs3
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改进后的快速排序: @+Nf@LJ
VL"Cxs
package org.rut.util.algorithm.support; fO#nSB/
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import org.rut.util.algorithm.SortUtil; u!+;Iy7
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/** `l70i2xcj
* @author treeroot b
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* @since 2006-2-2 V4Qy^nn1
* @version 1.0 PD^ 6Ywn>s
*/ /={N^8^=x
public class ImprovedQuickSort implements SortUtil.Sort { vqoK9
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private static int MAX_STACK_SIZE=4096; }{PG^ Fc<P
private static int THRESHOLD=10; T#Bj5H
/* (non-Javadoc) G"L`9E<0V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .n.N.e
*/ |eye) E:
public void sort(int[] data) { g^po$%I '
int[] stack=new int[MAX_STACK_SIZE]; :YX5%6
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B=S
int top=-1; fV6ddh
int pivot; 7#Fcn
int pivotIndex,l,r; e=#D1
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stack[++top]=0; 3;uLBuZOCN
stack[++top]=data.length-1; ]i1OssV~>
yP` K [/
while(top>0){ FH%:NO
int j=stack[top--]; M djxTr^
int i=stack[top--]; 6N Ogi
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pivotIndex=(i+j)/2; /c!^(5K
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pivot=data[pivotIndex];
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SortUtil.swap(data,pivotIndex,j); fX\y/C
e:N;Jx#
file://partition W"t^t|H'~
l=i-1; b>#dMRK
r=j; ApggTzh@
do{ Y>8JHoV
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eqOT@~H
SortUtil.swap(data,l,r); TB<$9FCHK
} 9R-2\D]
while(l SortUtil.swap(data,l,r); "8a ?KQ
SortUtil.swap(data,l,j); <wd;W;B
?} E
M,
if((l-i)>THRESHOLD){ -i91nMi]
stack[++top]=i; #Lk~{
stack[++top]=l-1; 33~8@]b
} y
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if((j-l)>THRESHOLD){ at\u7>;.^k
stack[++top]=l+1;
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stack[++top]=j; :7Uv)@iUk
} fceO|mSz_
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} XW2ZQMos1
file://new InsertSort().sort(data); Bk5 ELf8pL
insertSort(data); "So"oT1
} (?GW/pLK]
/** $i!r> .Jo
* @param data z/WGL
*/ X -=M>H^
private void insertSort(int[] data) { c|k(_#\B
int temp; Ff
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oxI?7dy5
} 7GErh,
} k#/cdK!K
} #2Vq"Zn
HvZSkq^
} 7.)_H
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归并排序: tt6GtYrC 1
+nB0O/m'U
package org.rut.util.algorithm.support; 7>0/$i#'Vl
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import org.rut.util.algorithm.SortUtil; 6T_Ya)
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/** |]Hr"saO0
* @author treeroot v:w^$]4
* @since 2006-2-2 NMC0y|G
* @version 1.0 '0o^T 7C
*/ t0/Ol'kgs
public class MergeSort implements SortUtil.Sort{ *]Cyc<
Rz&}e@stl
/* (non-Javadoc) ,Qo:]Mj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >'WTVj `
*/ xwHE,ykE
public void sort(int[] data) { utn,`v
int[] temp=new int[data.length]; bcxR7<T,"9
mergeSort(data,temp,0,data.length-1); ,I]]52+?4
} tqp i{e
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private void mergeSort(int[] data,int[] temp,int l,int r){ 2#/sIu-L
int mid=(l+r)/2; Yn?Xo_Y
if(l==r) return ; U.I7p
mergeSort(data,temp,l,mid); 497 l2}0
mergeSort(data,temp,mid+1,r); B|M@o^Tf
for(int i=l;i<=r;i++){ 0~DsA Ua
temp=data; j+gh*\:q
} S+^hK1jL
int i1=l; X%B$*y5
int i2=mid+1; !tx.2m*5
for(int cur=l;cur<=r;cur++){ gv(MX
;B#
if(i1==mid+1) ![]6| G&
data[cur]=temp[i2++]; bwszfPM
else if(i2>r) 4/ q
BD
data[cur]=temp[i1++]; +Oo-8f*
else if(temp[i1] data[cur]=temp[i1++]; ;'[?H0Jw'
else y~M6
data[cur]=temp[i2++]; %t74*cX
} M[-/ &;`f@
} fwUF5Y
`/i/AZ{
} Y$./!lVY
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改进后的归并排序: ,KPrUM}
9.#")%_p
package org.rut.util.algorithm.support; #8BI`.t)j
pQ4HX)<P
import org.rut.util.algorithm.SortUtil; ~[BGKqh
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/** '[_.mx|cd`
* @author treeroot FBzsM7]j
* @since 2006-2-2 a6It1%a+
* @version 1.0 MFWkJbZV
*/ k!WeE#"(
public class ImprovedMergeSort implements SortUtil.Sort { ``{GU}n
x>A[~s"|N
private static final int THRESHOLD = 10; xnw' &E
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/* :ee vc7
* (non-Javadoc) R4DfqX
* :RBeq,QaO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iHQ$L# 7
*/ Z;0<k;#T(p
public void sort(int[] data) { *#?9@0b@
int[] temp=new int[data.length]; EF9Y=(0|
mergeSort(data,temp,0,data.length-1); |;p.!FO
} 4gmlK,a
9gIim
private void mergeSort(int[] data, int[] temp, int l, int r) { /h]ru SI
int i, j, k; iorQ/(
int mid = (l + r) / 2; <KoOJMx(
if (l == r) z 61F q
return; e9QjRx
if ((mid - l) >= THRESHOLD) G"6XJYoI
mergeSort(data, temp, l, mid); Vk[M .=J
else Y%r>=Jvu6
insertSort(data, l, mid - l + 1); qIh9? |`U
if ((r - mid) > THRESHOLD) `ah"Q;d$
mergeSort(data, temp, mid + 1, r); N6%L4v8-}X
else cBZJ
insertSort(data, mid + 1, r - mid); 5HY0 *\
/paZJ}Pr.
for (i = l; i <= mid; i++) { sEL0h4
temp = data; zq3f@xOK
} pXA|'U5]
for (j = 1; j <= r - mid; j++) { <HpUP!q8v
temp[r - j + 1] = data[j + mid]; Ufor>
} t"MrrK>T
int a = temp[l]; ;U y}(
int b = temp[r]; r-]%R:U*
for (i = l, j = r, k = l; k <= r; k++) { w:=:D=xH2
if (a < b) { ={o)82LV
data[k] = temp[i++]; lB#7j
a = temp; 5as5{"l
} else { WH Ul.h
data[k] = temp[j--]; "\5 T
6
b = temp[j]; GsiKL4|mj
} h1f 05
} HoeW6U V
} T;S6<J
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/** VAqZ`y
* @param data ~K(mt0T)
* @param l BV}sN{
* @param i WfTl\Dxw
*/ dqFp"Xe"%
private void insertSort(int[] data, int start, int len) { Z4gn7
'V
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *|;`Gp
} 0c,!<\B
} @V^5_K
} y!q`o$nK
} b+$wx~PLi
;r.#|b
堆排序: 0eK>QZ_
"/3YV%to-#
package org.rut.util.algorithm.support; {)Shc;Qh
um2}XI
import org.rut.util.algorithm.SortUtil; Wq}W )E
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/** >Y|P+Z\7
* @author treeroot by,3A
* @since 2006-2-2 vRDs~'f
* @version 1.0 =&DuQvN,
*/ sJ5#T iX
public class HeapSort implements SortUtil.Sort{ %D%
Ok7s})
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/* (non-Javadoc) >?ec"P%vS/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {L7+lz
*/ 8VC%4+.FF
public void sort(int[] data) { tOo\s&j
MaxHeap h=new MaxHeap(); ogJ';i/o
h.init(data); ([7XtG/?
for(int i=0;i h.remove(); ,8!'jE[d
System.arraycopy(h.queue,1,data,0,data.length); = U[$i"+
} H%i [;
u
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private static class MaxHeap{ 8CH9&N5W5t
6#a82_
void init(int[] data){ C+dz0u3s
this.queue=new int[data.length+1]; 'X?Iho
for(int i=0;i queue[++size]=data; JLg/fB3%
fixUp(size); OAgZeK$
} )XoMOz
} DwWm(8&6;}
*V[I&dKq
private int size=0; z>'vS+axV
Fw#1?/K~
private int[] queue; DV)NY!
8~BLTZ
public int get() { |A+,M"F?
return queue[1]; i8f +woZL
} bh3yH>Zns
wT-Kg=-q
public void remove() { 0}'/3Q
SortUtil.swap(queue,1,size--); B^{~,'
fixDown(1); HC6v#-( `{
} (aq-aum-I
file://fixdown Rv.IHSQUo
private void fixDown(int k) { vV"I}L
int j; QcjsQTAbk
while ((j = k << 1) <= size) { 2av=W
if (j < size %26amp;%26amp; queue[j] j++; 7Rc>LI*
'
if (queue[k]>queue[j]) file://不用交换 6:Y2z!MLO
break; D'^UZZlI^I
SortUtil.swap(queue,j,k); @twi<U_
k = j; r>sXvzv
} /fU-0a8
} X}ihYM3y/
private void fixUp(int k) { m9\~dD
while (k > 1) { @CoUFdbz
int j = k >> 1; vZ^U]h V
if (queue[j]>queue[k]) 7 ;2>kgf~
break; j8^zE,Z
SortUtil.swap(queue,j,k); m8+
EMBl
k = j; }?HWUAL\
} A-rj: k!
} #nmh=G?\Sm
8>xd
} Lg7dJnf
p1T0FBV
L
} %MCS_'N
J
,F+,A].wG
SortUtil: >\3N#S"PF
j9-.bGtm?.
package org.rut.util.algorithm; BA8!NR|
AOz~@i^
import org.rut.util.algorithm.support.BubbleSort; +4Q1s?`
import org.rut.util.algorithm.support.HeapSort; 7;Vmbt9
import org.rut.util.algorithm.support.ImprovedMergeSort; '?LqVzZI
import org.rut.util.algorithm.support.ImprovedQuickSort; -<e_^
import org.rut.util.algorithm.support.InsertSort; /"^XrVi-
import org.rut.util.algorithm.support.MergeSort; =?N$0F!
import org.rut.util.algorithm.support.QuickSort; 6}Rb-\N
import org.rut.util.algorithm.support.SelectionSort; <)"i' v $
import org.rut.util.algorithm.support.ShellSort; (`R
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&!FI!T
-WH
/** }FX:sa?5
* @author treeroot fUOQ(BGp
* @since 2006-2-2 HYZp=*eb
* @version 1.0 lsgZ
*/ z f>(Y7M
public class SortUtil { o|_9%o52'
public final static int INSERT = 1; _BvGEM`o
public final static int BUBBLE = 2; WmRu3O
public final static int SELECTION = 3; IGlM}
?x
public final static int SHELL = 4; }Nma %6PfV
public final static int QUICK = 5; EoS6t
public final static int IMPROVED_QUICK = 6; g!)*CP#;
public final static int MERGE = 7; 5,\|XQA5!
public final static int IMPROVED_MERGE = 8; E
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public final static int HEAP = 9; (
efxw
m6Qm }""
public static void sort(int[] data) { Z|A+\#'
sort(data, IMPROVED_QUICK); M<Y{Cs
} p<y\^a
private static String[] name={ RcZ&/MY
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vYq"W%
}; kovJ9
Sw>,Q-32
private static Sort[] impl=new Sort[]{ t@iw&>8z
new InsertSort(), E5Ls/ HK
new BubbleSort(), O(:/&`)
new SelectionSort(), r[#*..Y
new ShellSort(), ?KE:KV[Y
new QuickSort(), @ 0/EKWF
new ImprovedQuickSort(), $J0o%9K
new MergeSort(), !LsIHDs4
new ImprovedMergeSort(), R~;8v1>K
new HeapSort() 7&(h_}Z
}; ke)<E98DC
,pUB[w\
public static String toString(int algorithm){ }*vE/W
return name[algorithm-1]; +,)Iv_Xl$
} JZJb&q){
R?Ch8mW.!
public static void sort(int[] data, int algorithm) { };f^*KZ=0
impl[algorithm-1].sort(data); Kp!A
ay
} ]H<}6}Gd
V|/N-3M
public static interface Sort { ?.c:k;j
public void sort(int[] data); 6w_TL<S
} |;"(C# B
?uW}
XAi
public static void swap(int[] data, int i, int j) { Cn_r?1{W
int temp = data; M}
+s_h9
data = data[j]; Fz5eCe\B
data[j] = temp; Ci2*5n<
} lbh7`xCR
} /XdLdA!v