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。 -~z@W3\
插入排序: x& _Y( bHA
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package org.rut.util.algorithm.support; Rd8mn'A
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import org.rut.util.algorithm.SortUtil; fBX@
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/** X
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* @author treeroot LR&MhG7
* @since 2006-2-2 i,^-9
* @version 1.0 lLQcyi0
*/ o?]Q&,tO
public class InsertSort implements SortUtil.Sort{ A^lm 0[3q
9>{ml&$
/* (non-Javadoc) wQW`Er3w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .i\FK@2
*/ j&ti "|2\
public void sort(int[] data) { )pI( <
int temp; G=qlE?j`j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FqyxvL.
} '&Ur(axs
} (bm>
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} `U0XvWPr[
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} 9ad`q+kY
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冒泡排序: f)vnm*&-
+PPQ"#1pS
package org.rut.util.algorithm.support; }^I36$\
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import org.rut.util.algorithm.SortUtil; 548L^"D
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/** koB'Zp/FaY
* @author treeroot *v#V%_ o
* @since 2006-2-2 RA a1^Qb
* @version 1.0 TT3 6Y
*/ <Hv/1:k}
public class BubbleSort implements SortUtil.Sort{ b\^DQZmth
RH,x);J|
/* (non-Javadoc) tIn`L6b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CeU=A9
*/ v$\<L|
public void sort(int[] data) { m p_7$#{l
int temp; .Z]hS7t
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;u`8pF!_eE
if(data[j] SortUtil.swap(data,j,j-1); !,$K;L
} =
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} iB99.,o-&
} zw'%n+5m
} = ~s+<9c]
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} q4X(_t
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选择排序: #6~KO7}
RKzO$T
package org.rut.util.algorithm.support; ZxOo&YR3
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import org.rut.util.algorithm.SortUtil; cK[=IE5
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/** }e|cszNRd
* @author treeroot o]V.6Ge-
* @since 2006-2-2 eSIG+{;&
* @version 1.0 Qu<6X@+5
*/ |L*=\%t8
public class SelectionSort implements SortUtil.Sort { X}G$ON
>/RFff]Fh0
/* E
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* (non-Javadoc) M8:i ]
* IjOBY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ kE6/d,
public void sort(int[] data) { RU#}!Kq
int temp; *]/iL#
for (int i = 0; i < data.length; i++) { Slo^tqbG
int lowIndex = i; )AEtW[~D
for (int j = data.length - 1; j > i; j--) { J e|
if (data[j] < data[lowIndex]) { 3ouy-SQ
lowIndex = j; gdSqG2/&
} >+<b_q|P
} %yc-D]P/
SortUtil.swap(data,i,lowIndex); aZo}Ix:/
} %Un wh1VG
} |3FGMg%
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} Kt qOA[6
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Shell排序: "N'W~XPG
Q"NZE
package org.rut.util.algorithm.support; f.j<VKF}
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import org.rut.util.algorithm.SortUtil; * BrGh
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/** *[i49X&rd
* @author treeroot 5"G-r._
* @since 2006-2-2 DO{otn9<
* @version 1.0 bLWY Tj
*/ C}uzzG6s
public class ShellSort implements SortUtil.Sort{ 4dN <B U
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/* (non-Javadoc) 96;5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sk07|9nU
*/ O..{wdZy
public void sort(int[] data) { ^AI02`c.
for(int i=data.length/2;i>2;i/=2){ 2::YR?
for(int j=0;j insertSort(data,j,i); +qpG$#J0
} ,K@[+ R!
} LRWM}'.s
insertSort(data,0,1); [X /s^42
} &:ZR% f
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/** Uu*iL< `
* @param data &Qv HjjQ?u
* @param j (#6Fg|f4Y
* @param i xR$T/] /
*/ f`;w@gR`=
private void insertSort(int[] data, int start, int inc) { bbjEQby
int temp;
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =rZ'!Pa
} ]zAwKuIK
} u{HO6s\S
} yK&
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} tBJ4lb
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快速排序: )2l @%?9
Yj bp:
package org.rut.util.algorithm.support; ,)dlL tUm
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import org.rut.util.algorithm.SortUtil; nC[aEZ7
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/** NNr6~m)3v
* @author treeroot \}4*}Lr
* @since 2006-2-2 \ `z%5/@f;
* @version 1.0 9MO=f^f-
*/ S,5>/'fy0
public class QuickSort implements SortUtil.Sort{ 2[(~_VJ
WK?5`|1l:x
/* (non-Javadoc) 3O-vO=D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nql9SQ'\\
*/ oR~d<^z(
public void sort(int[] data) { K/Pw;{}
quickSort(data,0,data.length-1); xDl;
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} &uc`w{,Zs
private void quickSort(int[] data,int i,int j){
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int pivotIndex=(i+j)/2; NZZy^p&O
file://swap M:oM(K+
SortUtil.swap(data,pivotIndex,j); 6jBi?>[I
=NY55t.
int k=partition(data,i-1,j,data[j]); hi$AZ+
SortUtil.swap(data,k,j); ^>ir&$
if((k-i)>1) quickSort(data,i,k-1); ia_@fQ
if((j-k)>1) quickSort(data,k+1,j); ,W[J@4.
?Be}{Qqlg
} G9Kck|50
/** uxDM
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* @param data A/:_uqm4
* @param i EAXl.Y.
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* @param j ZCZ@ZN
* @return ^Lc\{,m
*/ i\^4EQ
private int partition(int[] data, int l, int r,int pivot) { >W >Ei(f
do{ ORF:~5[YS`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +ansN~3
SortUtil.swap(data,l,r); =+mb@#="m
} uJH[C>
while(l SortUtil.swap(data,l,r); \X\f~CB
return l; |
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} eC%Skw
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} eCsk\f`
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改进后的快速排序: b+:J?MR;}
.QKyB>s
package org.rut.util.algorithm.support; w< Xwz`O
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import org.rut.util.algorithm.SortUtil; [PUu9rz#
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/** 6i+,/vr
* @author treeroot -3)jUzD
* @since 2006-2-2 o<3$|`S&
* @version 1.0 $Z;/Sh
*/ pw4^E|X
public class ImprovedQuickSort implements SortUtil.Sort { itirh"[
,>b>I#{
private static int MAX_STACK_SIZE=4096; *IWW,@0
private static int THRESHOLD=10; dTK0lgkUE
/* (non-Javadoc) mgVYKZWL-i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $57b.+2n
*/ p$|7T31 *
public void sort(int[] data) { 6*>Lud
int[] stack=new int[MAX_STACK_SIZE]; @j}%{Km]Y
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int top=-1; ;9h;oB@
int pivot; %EVgS F!r
int pivotIndex,l,r; hPNMp@Nm6
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stack[++top]=0; w5%i
stack[++top]=data.length-1; Mhti
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while(top>0){ VSDua.
int j=stack[top--]; R^/SBrWve
int i=stack[top--]; 0stc$~~v
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pivotIndex=(i+j)/2; 4RtAwB
pivot=data[pivotIndex]; 7LrmI~P
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SortUtil.swap(data,pivotIndex,j); rq8 d}wj
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file://partition ^O+ (eA7E
l=i-1; [F-GaaM
r=j; _7;:*'>a4
do{ 8vR_WHsL
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); v
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SortUtil.swap(data,l,r); y{hy7w' d
} =gQ9>An
while(l SortUtil.swap(data,l,r); &LAXNk2
SortUtil.swap(data,l,j); 1s.2z[B~
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if((l-i)>THRESHOLD){ 6^'BTd
stack[++top]=i; -g2l-N{&
stack[++top]=l-1; )'U0n`=
} A/'po_'uy
if((j-l)>THRESHOLD){ ySmbX
stack[++top]=l+1; .nrllVG%`
stack[++top]=j; v}Ju2 }IK
} 18Y#=uH}
@0@ZlHwM
} pCh v;
file://new InsertSort().sort(data); Wvr{l
insertSort(data); [MFnS",7c
} s||" } l
/** :NF4[c
* @param data ,?|$D Y+=
*/ OA[e}Vn
private void insertSort(int[] data) { {k)gDJU
int temp; \\FT.e6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .N
qXdari
} \4>,L_O
} =otO@22Np
} /!?LBtqy
ZKrLp8l\
} -U=Ci
@9B*V~ <
归并排序: \CMZ_%~wU
%A$&9c%
package org.rut.util.algorithm.support; O9sEaVX
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import org.rut.util.algorithm.SortUtil; ]A3
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/** zOs}v{8"
* @author treeroot PVo7Sy!'H
* @since 2006-2-2 3O/#^~\'hW
* @version 1.0 l&qnqmW<
*/ +
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public class MergeSort implements SortUtil.Sort{ Tf86CH=)5
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/* (non-Javadoc) *i]?J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (jc& Fk
*/ IA@>'O
public void sort(int[] data) { hL&$` Q
int[] temp=new int[data.length]; aaR& -M@
mergeSort(data,temp,0,data.length-1); g F*AS(9
} /D&&7;jJ
Kp`{-dUf
private void mergeSort(int[] data,int[] temp,int l,int r){ 5.9<g>C
int mid=(l+r)/2; Mqr_w!8d
if(l==r) return ; 3T2]V?
mergeSort(data,temp,l,mid); @b,Az{EH
mergeSort(data,temp,mid+1,r); gA!@oiq@
for(int i=l;i<=r;i++){ Wb-C0^dTn
temp=data; pd|KIs%jl
} S<"Fp1#"l
int i1=l; [k6I#v<&
int i2=mid+1; CF '&Yo
for(int cur=l;cur<=r;cur++){ C!VhVOy>d
if(i1==mid+1) Y_JQPup
data[cur]=temp[i2++]; $^ws#}j
else if(i2>r) G#n 4g:K
data[cur]=temp[i1++]; 0X=F(,>9
else if(temp[i1] data[cur]=temp[i1++]; J-v1"7[2GC
else XMrk2]_
data[cur]=temp[i2++]; U)/.wa>
} \Oeo"|
} B.q/}\
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_}R[mr/
} m2j&0z
/;*_[g5*i
改进后的归并排序: /4&gA5BS]
1!<t8,W4
package org.rut.util.algorithm.support; @8|*Ndx2
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import org.rut.util.algorithm.SortUtil; |C[!A
dHc\M|HCC
/** +OE!Uqnt
* @author treeroot 94"+l@K
* @since 2006-2-2 hmu>s'
* @version 1.0 7Y5 r3a}%
*/ [.gk{> #
public class ImprovedMergeSort implements SortUtil.Sort { vd%g'fTy9
n)e2?
private static final int THRESHOLD = 10; LhJUoX
srGOIK.
/* (pxH<k=Ah
* (non-Javadoc) .kT]^rv
;
* 7n7Xyb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XX8HSw!w
*/ 3uLG$`N
public void sort(int[] data) { Q(bOar5
int[] temp=new int[data.length]; {R}F4k
mergeSort(data,temp,0,data.length-1); iW5cEI%tb
} q/#e6;x
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private void mergeSort(int[] data, int[] temp, int l, int r) { YM}a>o
int i, j, k; F]aoTy
int mid = (l + r) / 2; M@Th^yF+8H
if (l == r) :os8"
return; \P<aK$g
if ((mid - l) >= THRESHOLD) ABWn49c.
mergeSort(data, temp, l, mid); Q|'f3\
else J:Cr.K`
insertSort(data, l, mid - l + 1); 4t,
2H" M
if ((r - mid) > THRESHOLD) aLa<zEssz
mergeSort(data, temp, mid + 1, r); D:z'`v0j
else uvId],dQ5
insertSort(data, mid + 1, r - mid); A)f-r
8q^}AT<C
for (i = l; i <= mid; i++) { dli(ckr
temp = data; (` *BZ_
} 1'~Xn
4
f
for (j = 1; j <= r - mid; j++) { 7v5]%%E/
temp[r - j + 1] = data[j + mid]; 3l{V:x!9@
} jIol`WX
int a = temp[l]; ?qgQ)#6
int b = temp[r]; a(gXvgrf[
for (i = l, j = r, k = l; k <= r; k++) { [o)K1>>7
if (a < b) { TSB2]uH
data[k] = temp[i++]; |Y7SP]/`gB
a = temp; +:S`]
} else { cOV j @z
data[k] = temp[j--]; yHeL&H
b = temp[j]; J p'^!
} {L-^J`> G
} EXDDUqZ5\
} L&p R#
CX|W$b)%
/** 1d5%(:@
* @param data /2tA
n
* @param l %*R, ceuI
* @param i EF0v!XW
*/ giakEPl
private void insertSort(int[] data, int start, int len) { YYWD\Y`8
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); k@4N7}
} }y(t')= 9
} IW~R{ ]6
} .j]tzX
} j4$nr=d.6
PLCm\Oh$l
堆排序: GA^hev
aI=p_+.h
package org.rut.util.algorithm.support; aU!}j'5Q
AdDX_\V,*
import org.rut.util.algorithm.SortUtil; thjr1y.e
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/** \5ls
<=S.
* @author treeroot n7t}G'*Y!^
* @since 2006-2-2 _.5{vGyxr
* @version 1.0 'OY4Q'Z
*/ &Hoc`u
public class HeapSort implements SortUtil.Sort{ >h7(kj:
yE:y[k0E
/* (non-Javadoc) DbMVbgz<e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V]H(;+^P
*/ .?Eb{W)^br
public void sort(int[] data) { L!}!k N:?
MaxHeap h=new MaxHeap(); _2fW/U54_
h.init(data); ;s+/'(*
for(int i=0;i h.remove(); OSBR2Z;=
System.arraycopy(h.queue,1,data,0,data.length); M':-f3aT%
} V:\:[KcL^
csP4Oq\g[
private static class MaxHeap{ A8%
e_XA
lc,k-}n
void init(int[] data){ m?e/MQr
this.queue=new int[data.length+1]; "N+4TfXy
for(int i=0;i queue[++size]=data; s)-An(Uw
fixUp(size); { DYY9MG8
} S?688
} 5CI{&E
h FU8iB`Q
private int size=0; }-3 VK%
X=QX9Ux?^
private int[] queue; #Vk?
"laf:Ty1
public int get() { *AH`ob}
return queue[1]; 4|x_C-@
} *zdD4I=
4C;;V m4~
public void remove() { Fb,*;M1'
SortUtil.swap(queue,1,size--); -P;3BHS$T
fixDown(1); }U}zS@kI
} .j4y0dh33
file://fixdown 72nZ`u
private void fixDown(int k) { ChiIQWFE
int j; <B6md
i'R
while ((j = k << 1) <= size) { - Jaee,P
if (j < size %26amp;%26amp; queue[j] j++; ZF7n]LgSc&
if (queue[k]>queue[j]) file://不用交换 g QBS#NY
break; mERkC,$
SortUtil.swap(queue,j,k); Cy-p1s
k = j; ZF>:m>
} -d,D!
} [ja^Bhu
private void fixUp(int k) { Oo|JIr7i
while (k > 1) { b7.7@Ly
y
int j = k >> 1; o/-RGLzAo
if (queue[j]>queue[k]) 8m0*89HEu
break; j2G^sj"|
SortUtil.swap(queue,j,k); ]]|#+$ ~
k = j; SdnnXEB7
} )Jt. Z^J<
} 6ALjM-t=V
B-
@bU@H
} ag'hHFV
@`[e1KQ
} k$$SbStD
L?ZSfm2<
SortUtil: kFjv'[Y1N
dA<%4_WZty
package org.rut.util.algorithm; }83
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.$\-{)
import org.rut.util.algorithm.support.BubbleSort; 4)iP%%JH
import org.rut.util.algorithm.support.HeapSort; %pVsafV
import org.rut.util.algorithm.support.ImprovedMergeSort; "}()/
import org.rut.util.algorithm.support.ImprovedQuickSort; qc(e3x
import org.rut.util.algorithm.support.InsertSort; )>~jjR
import org.rut.util.algorithm.support.MergeSort; 3EY Ed39E
import org.rut.util.algorithm.support.QuickSort; z</C)ObL
import org.rut.util.algorithm.support.SelectionSort; "L.k
m
import org.rut.util.algorithm.support.ShellSort; B Ewa QvQ!
7;Ze>"W>
/** +3o
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* @author treeroot 2/3yW.C
* @since 2006-2-2 >/-H!jUF]
* @version 1.0 $}vk+.!*1
*/ tav@a)
public class SortUtil { >lIzeEW#
public final static int INSERT = 1; fr~Eb'8
public final static int BUBBLE = 2; 3P!OP{`
public final static int SELECTION = 3; X3sAy(q
public final static int SHELL = 4; c#x~x
public final static int QUICK = 5; <lzC|>BG
public final static int IMPROVED_QUICK = 6; JWHsTnB
public final static int MERGE = 7; 82FEl~,^E
public final static int IMPROVED_MERGE = 8; 3w^W6hN)
public final static int HEAP = 9; syu/"KY^!
^:/c<(DQD
public static void sort(int[] data) { '`^~Zy?c
sort(data, IMPROVED_QUICK); .6MG#N
} hTa X@=Ra
private static String[] name={ YT-ua{.^
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" qt9jZtx
}; =|J*9z;
0_qr7Ui8(
private static Sort[] impl=new Sort[]{ =mLp g4
new InsertSort(), 5QqU.9M
new BubbleSort(), ;?q(8^A
new SelectionSort(), u^xnOVE
new ShellSort(), UG\2wH_
new QuickSort(), k2eKs*WLC
new ImprovedQuickSort(), +C\79,r
new MergeSort(), e(w c
[bv
new ImprovedMergeSort(), by1q"\-,
new HeapSort() NK|U:p2H
}; u>;aQtK~
r)~?5d
public static String toString(int algorithm){ XHv
m{z=
return name[algorithm-1]; qGq]E`O
} A< .5=E,/
L:C/PnIV
public static void sort(int[] data, int algorithm) { d"5_x]Z;
impl[algorithm-1].sort(data);
IZrcn
} Ch{6=k bK
Lu^uY7
?}
public static interface Sort { <k[_AlCmsg
public void sort(int[] data); u$tst_y-
} BcQUD?LC`
4U\>TFO
public static void swap(int[] data, int i, int j) { W'"hjQ_
int temp = data; uPl7u1c
data = data[j]; m>+
data[j] = temp; x
.@O]}UH
} K
'I6iCrD
} xJw"
8V<