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。 ;S+*s 'e
插入排序: a,x-akZWf
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package org.rut.util.algorithm.support; Zm!T4pL
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import org.rut.util.algorithm.SortUtil; fB|rW~!v
/** cU?A|'
* @author treeroot r ,D
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* @since 2006-2-2 &z8@ rk|
* @version 1.0 ,]\L\ V
*/ NGtSC_~d
public class InsertSort implements SortUtil.Sort{ 7'z{FSS
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/* (non-Javadoc) "detDB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s"?Z jV)`
*/ Hly2{hokq
public void sort(int[] data) { @~hiL(IR'
int temp; j[k&O)A{C
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A
'rfoA6
} Z0s}65BR
} pca `nN!
} >VM@9Cph
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} .z4
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冒泡排序: x>d,\{U
zBtlkBPu
package org.rut.util.algorithm.support; P!3)-apP\
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import org.rut.util.algorithm.SortUtil; .(^KA{
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/** A^nB!veh
* @author treeroot SB0Cq
* @since 2006-2-2 =7wI/5iN
* @version 1.0 l8 k@.<nCO
*/ t Sran
public class BubbleSort implements SortUtil.Sort{ 9`]Gosz
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/* (non-Javadoc) cw|3W]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {z>fe
}
*/ S#_g/3w
public void sort(int[] data) { ;NQ9A &$)
int temp; 9z6-HZG'~<
for(int i=0;i for(int j=data.length-1;j>i;j--){ u:JD
if(data[j] SortUtil.swap(data,j,j-1); T1 >xw4uo
} ?XN=Er^
} 8'[g?
} }5
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} gpDH_!K
y:u7*%"
} o.W:R Ux
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选择排序: Cl#PYB{1Y
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package org.rut.util.algorithm.support; :@#9P,"
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import org.rut.util.algorithm.SortUtil; uNSaw['0j
@a2n{
/** "`HkAW4GZa
* @author treeroot 9oBK(Sf@^
* @since 2006-2-2 2*;qr|h,
* @version 1.0 $2uk;&"?A=
*/ @i2"+_}*
public class SelectionSort implements SortUtil.Sort { /iURP-rl
kT)[<`p
/* V&)Jvx}^
* (non-Javadoc) v6=pV4k9
* M|8vP53=q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4FrP%|%E~
*/ 8 *o*?1.
public void sort(int[] data) { GPV=(}z
int temp; AB(WK9o
for (int i = 0; i < data.length; i++) { =2v/f_
int lowIndex = i; z7TMg^9#
for (int j = data.length - 1; j > i; j--) { l@:Tw.+/9
if (data[j] < data[lowIndex]) { E$l 4v>iA
lowIndex = j; #C^)W/dP
} ^f6pw!
} ov;1=M~RF
SortUtil.swap(data,i,lowIndex); mD@*vq
} r{\c.\
} R(p`H}^
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} 0C!f/EZK
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Shell排序: N)yCGo
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package org.rut.util.algorithm.support; h pf,44Kg
PgOOFRwP
import org.rut.util.algorithm.SortUtil; >u?m
Bx
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/** (U@Ks )
* @author treeroot _EPfeh;
* @since 2006-2-2 ;::]R'F[
* @version 1.0 RvQa&r5l
*/ @vyq?H$U;N
public class ShellSort implements SortUtil.Sort{ Y oDL/
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/* (non-Javadoc) suKr//_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EKu%I~eM
*/ [G!#y
public void sort(int[] data) { hp|.hN(kS]
for(int i=data.length/2;i>2;i/=2){ ;Aqj$ x
for(int j=0;j insertSort(data,j,i); >lPWji'4;
} (8"advc6
} _(7f0p
insertSort(data,0,1); jxc^OsYj
} _:+hB9n s
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/**
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* @param data deLLqdZa
* @param j L2\<iJA}c
* @param i 6W\G i>
*/ q4MR9ig1E_
private void insertSort(int[] data, int start, int inc) { {,NF'x4$
int temp; [?>\]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &&PXWR!%]
} lcVZ 32MQ
} uH{oJSrK
} %eOO8^N
gOy;6\/
} l+nT$IPF
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快速排序: *Jwx,wF}4
ldFR%v>9
package org.rut.util.algorithm.support; zgNzdO/B
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import org.rut.util.algorithm.SortUtil; 3xIelTf*
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/** }3O 0nab
* @author treeroot qdnwaJ;&
* @since 2006-2-2 {gz-w|7
* @version 1.0 2A=q{7s
*/ ]?G|:Kx$y%
public class QuickSort implements SortUtil.Sort{ xm Ns%
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/* (non-Javadoc) sOJXloeO[6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fy 1- >~
*/ &+5ij;AD
public void sort(int[] data) { QYg V[\&
quickSort(data,0,data.length-1); C4aAPkcp2$
} lrjVD(R=g
private void quickSort(int[] data,int i,int j){ :%-w/QwTR
int pivotIndex=(i+j)/2; ~pT1,1
file://swap }el7@Gv
SortUtil.swap(data,pivotIndex,j); Xj9\:M-
a[_IG-l|i4
int k=partition(data,i-1,j,data[j]); X5pb9zRq
SortUtil.swap(data,k,j); uG$*DeZti
if((k-i)>1) quickSort(data,i,k-1); =`ZRPA!aY
if((j-k)>1) quickSort(data,k+1,j); s*Nb=v.e9
9OYyR
} boq=@Qh
/** l6*MiX]q
* @param data ]ZnASlc)
* @param i P$x9Z3d_
* @param j Jmuyd\?,b
* @return h% eGtd$n
*/ I&U.5wf
private int partition(int[] data, int l, int r,int pivot) { @<.ei)cqb
do{ L}
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u69UUkG
SortUtil.swap(data,l,r); {/j gB"9
} R<B5<!+
while(l SortUtil.swap(data,l,r); esiU._:u
return l; D 0Mxl?S?
} &,P; 7 R
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} [vY#9W"!
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改进后的快速排序: [D+,I1u2h
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package org.rut.util.algorithm.support; ppo0DC\>
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import org.rut.util.algorithm.SortUtil; u`ryCZo#g
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/** ]$uC~b
* @author treeroot + ZKU2N*
* @since 2006-2-2 jOU99X\0
* @version 1.0 ;X^#$*=Q
*/ OxPl0-]t
public class ImprovedQuickSort implements SortUtil.Sort { 2!6E~<~HC
^RJ@9`P&t
private static int MAX_STACK_SIZE=4096; * RyU*au
private static int THRESHOLD=10; +_L]d6
/* (non-Javadoc) OwT _W)$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A=0{}B#
*/ Y7zs)W8xTT
public void sort(int[] data) { l$Vy\CfK3n
int[] stack=new int[MAX_STACK_SIZE]; xL*J9&~iG
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int top=-1; HC=ZcK'W
int pivot; 02tt.0go
int pivotIndex,l,r; Wco2i m
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stack[++top]=0; Q}G2f4
stack[++top]=data.length-1; sv!zY= 6
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while(top>0){ $KQ q~|
int j=stack[top--]; YKz#,
int i=stack[top--]; 9%Tqk"x?
Zs]n0iwM'@
pivotIndex=(i+j)/2; BT&R:_:
pivot=data[pivotIndex]; gxhdxSm=2
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SortUtil.swap(data,pivotIndex,j); u]Q}jqiq"
+;\w'dBi,
file://partition }K={HW1>
l=i-1; 'pT13RFD
r=j; ? )h8uf4
do{ Yn[>Y)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); j^5YFUwsQg
SortUtil.swap(data,l,r); [-VK!9pQ
} $ OG){'X
while(l SortUtil.swap(data,l,r); ,oUzaEX
SortUtil.swap(data,l,j); Z.&/,UU:4
]tXIe?>9
if((l-i)>THRESHOLD){ h
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stack[++top]=i; +SF+$^T
stack[++top]=l-1; '#yqw%
} >DUTmJxv
if((j-l)>THRESHOLD){ n
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stack[++top]=l+1; 0TaI"/ai
stack[++top]=j; ;<q2
} !d<R=L
=%<,
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} uJCp
file://new InsertSort().sort(data); "AZ|u#0P
insertSort(data); !qp$Xtf+
} "0uM%*2
/** .;Mb4"7=
* @param data tewp-MKA
*/ 6lCpf1>6@
private void insertSort(int[] data) { jC_'6sc`
int temp; 24nNRTI
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :o'|%JE
} wgIm{;T[u
} #Lpw8b6
} >I0;MNX
a7c`[
} u4IK7[=
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归并排序: -yB}(69
xhbN=L
package org.rut.util.algorithm.support; '5Yzo^R;
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import org.rut.util.algorithm.SortUtil; (BPO*'
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/** :>.{w$Ln%
* @author treeroot nKzm.D gt_
* @since 2006-2-2 %-yzU/`JF
* @version 1.0 ; ?f+
*/ o S= !6h
public class MergeSort implements SortUtil.Sort{ pJvPEKN
o_`6oC"s
/* (non-Javadoc) ^7wqb'xg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6FNGyvBU
*/ 'x{oAtCP9
public void sort(int[] data) { {=3A@/vM
int[] temp=new int[data.length]; zwZvKV/g
mergeSort(data,temp,0,data.length-1); #lrwKHZ+
} X+ITW#
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private void mergeSort(int[] data,int[] temp,int l,int r){ SFRP
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int mid=(l+r)/2; ,\J 8(,%L
if(l==r) return ; <wk
mergeSort(data,temp,l,mid); 6`O,mpPu4G
mergeSort(data,temp,mid+1,r); ru@#s2
for(int i=l;i<=r;i++){ PkrVQH9^w
temp=data; 9:4S[mz/hD
} w.w{L=p:<"
int i1=l; x)*Lu">
int i2=mid+1; 72d|Jbd
for(int cur=l;cur<=r;cur++){ &RYdSXM
if(i1==mid+1) V\Gs&>
data[cur]=temp[i2++]; @JXpD8jn
else if(i2>r) O\.^H/
data[cur]=temp[i1++]; %h@1lsm1+
else if(temp[i1] data[cur]=temp[i1++]; F|eWHw?t
else 'KA$^
data[cur]=temp[i2++]; 4?1Qe\A^
} '";#v.!
} ?).;cG:<
?)|}gr
} <4LJ#Fx
^T!Zz"/:
改进后的归并排序: ,_u7@Ix
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package org.rut.util.algorithm.support; .p!
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S~);
import org.rut.util.algorithm.SortUtil; (O{OQk;CF
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/** ?4%H(k5A
* @author treeroot [(@K;6o
* @since 2006-2-2 -y-}g[`
* @version 1.0 3A!a7]fW
*/ > O?WRCB
public class ImprovedMergeSort implements SortUtil.Sort { `Y:]&w
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private static final int THRESHOLD = 10; (M$0'BV0
s{@R|5
/* a2B71 RT~
* (non-Javadoc) 4W"A*A
* \1!Q.V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %`C*8fc&
*/ M5h
r0R{
public void sort(int[] data) { 7A\`
int[] temp=new int[data.length]; Zu,:}+niU
mergeSort(data,temp,0,data.length-1); xRD+!3
} ;[::&qf
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private void mergeSort(int[] data, int[] temp, int l, int r) { iSCkV2
int i, j, k; `-uE(qp
int mid = (l + r) / 2;
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if (l == r) S/XU4i:aV
return; aDdGhB
if ((mid - l) >= THRESHOLD) \Ip)Lm0
mergeSort(data, temp, l, mid); W_2;j)i
else oRCc8&
insertSort(data, l, mid - l + 1); 'nq=xi@RC
if ((r - mid) > THRESHOLD) >BbX:
mergeSort(data, temp, mid + 1, r); gS'{JZu2
else 9,'m,2%W
insertSort(data, mid + 1, r - mid); Qb^G1#r@C
$Aw@xC^!
for (i = l; i <= mid; i++) { f\hMTebma$
temp = data; JJd qdX;
} %*gf_GeM
for (j = 1; j <= r - mid; j++) { J=^IS\m
temp[r - j + 1] = data[j + mid]; =:&xdphZ+
} .J75bX5
int a = temp[l]; b]]8Vs)'
int b = temp[r]; J#..xJ?XRD
for (i = l, j = r, k = l; k <= r; k++) { i\6CE|
if (a < b) { DEZww9T2Qs
data[k] = temp[i++]; {nV/_o$$
a = temp; 49; 'K
} else { lAU99(GXV
data[k] = temp[j--]; .rtA sbp.!
b = temp[j]; L~6%Fi&n4
} \C3I6Qx
} XYo,5-
} !kE5]<H\
P$ o bID
/** `DY
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* @param data ,s~l; Gkj
* @param l n4kq=Z%
* @param i ^!1!l-
*/ ">bhxXeiN
private void insertSort(int[] data, int start, int len) { ZIx-mC5
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P4[kW}R
} >$ZG=&
} mw
28E\U
} I`0-q?l
} cj[b ^Wv:
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堆排序: `*8}q!.
t neTOj
package org.rut.util.algorithm.support; )aIcA
OBAO(Ke
import org.rut.util.algorithm.SortUtil; DO:,PZX
J9mK9{#q
/** <T_3s\
* @author treeroot bTD?uX!^@
* @since 2006-2-2 cT'Bp)a
* @version 1.0 XGSFG~d
*/ 072C!F
public class HeapSort implements SortUtil.Sort{ }:#WjH^
LL( xi )
/* (non-Javadoc) 8S1@,O,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pp_4B
*/ 7S{qo&j'
public void sort(int[] data) { P-\f-FS
MaxHeap h=new MaxHeap(); -+WAaJ(b
h.init(data); {zb'Z Yz
for(int i=0;i h.remove(); cZh0\DyU
System.arraycopy(h.queue,1,data,0,data.length); *k LFs|U
} /L^g. ~
b&rBWp0#
private static class MaxHeap{ ps{4_V-3 u
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void init(int[] data){ =
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this.queue=new int[data.length+1]; yLC[-.H
for(int i=0;i queue[++size]=data; |o5eG><
fixUp(size); [inlxJD
} ?Y~t{5NJR
} DhM=q
Z 8rD9
k$6
private int size=0; *I]]Ogpq=
ftYJ 3/ WH
private int[] queue; O*:87:I d
Wu][A\3D1
public int get() { ZE=sw}=
return queue[1]; +KTfGwKt
} 7%^G]AFi
JH.XZM&
public void remove() { P)Adb~r
SortUtil.swap(queue,1,size--); SxRJ{m~
fixDown(1); j[r}!;O
} -$Fj-pO\
file://fixdown J8:s=#5
private void fixDown(int k) { C7%R2>}?f
int j; tRoSq;VrS
while ((j = k << 1) <= size) { c]9gf\WW
if (j < size %26amp;%26amp; queue[j] j++; Zy(i_B-b
if (queue[k]>queue[j]) file://不用交换 V"#0\|]m
break; =7Ud-5c
SortUtil.swap(queue,j,k); J>_mDcPo
k = j; !K-1tp$
} $nE{%?n-#
} =0cTct6\
private void fixUp(int k) { OR@
67Y
while (k > 1) { 9kD#'BxC
int j = k >> 1; 8T3,56>
if (queue[j]>queue[k]) g6Vkns4
break; S\:^#Yi`
SortUtil.swap(queue,j,k); 1-gM)x{Jr
k = j; ]K(a32V CH
} ,j%\3g`
} QEJu.o
oZ%uq78#[%
} &hWELZe0vv
b-&rMML
} 07.p
{X R
[edF'7La
SortUtil: eHgr"f*7
CF;Gy L1M
package org.rut.util.algorithm; {I{ 0rV
3WwS+6R
import org.rut.util.algorithm.support.BubbleSort; Dge#e
import org.rut.util.algorithm.support.HeapSort; >6C\T@{lJ
import org.rut.util.algorithm.support.ImprovedMergeSort; 5=TgOS]R
import org.rut.util.algorithm.support.ImprovedQuickSort; r8m}B#W7
import org.rut.util.algorithm.support.InsertSort; a OmG, +o
import org.rut.util.algorithm.support.MergeSort; J*zzjtY( 1
import org.rut.util.algorithm.support.QuickSort; d'_q9uf'
import org.rut.util.algorithm.support.SelectionSort; l+Wux$6U
import org.rut.util.algorithm.support.ShellSort; $J6
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pz^S3fy
/** 1clzDwW
* @author treeroot \n_7+[=E
* @since 2006-2-2 ='"Yj
* @version 1.0 1GN^uia7
*/ FF8jW1
public class SortUtil { \m7\}Nbz0/
public final static int INSERT = 1; 3/RwCtc
public final static int BUBBLE = 2; )?jFz'<r
public final static int SELECTION = 3; 2* g2UP
public final static int SHELL = 4; =Z+^n
?"
public final static int QUICK = 5; 2O kID
WcM
public final static int IMPROVED_QUICK = 6; !~E/Rp
public final static int MERGE = 7; IOFXkpKR
public final static int IMPROVED_MERGE = 8; ]xvA2!)Q
public final static int HEAP = 9; I$"Z\c8;
.F ?ww}2p]
public static void sort(int[] data) { u$JAjA
sort(data, IMPROVED_QUICK); "Da1BuX\
} T, #-: }
private static String[] name={ Vg$d|m${
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" F+*E}QpM
}; 6[t<g=
\6
\bD<
private static Sort[] impl=new Sort[]{ L\4rvZa
new InsertSort(), 8O^x~[sQ
new BubbleSort(), >M5}L<
new SelectionSort(),
f,O10`4s
new ShellSort(), J^"_H:1[
new QuickSort(), *9n[#2sM<
new ImprovedQuickSort(), IgbuMEfL
new MergeSort(), 'fn}I0Vc
new ImprovedMergeSort(), t]&.'n,
new HeapSort() j)@W1I]2#
}; Ny"9!3V
l4RqQ+[KA;
public static String toString(int algorithm){ X0j\nXk
return name[algorithm-1]; P"7` :a
} x)?V{YAL
n~0wq(8M
public static void sort(int[] data, int algorithm) { />xEpR3_A
impl[algorithm-1].sort(data); a@? $#>
} F.TIdkvp
8fQ~UcT$
public static interface Sort { Gm-
"?4(
public void sort(int[] data); fS}Eu4Xe
} ](oeMl18R
<~|n}&
public static void swap(int[] data, int i, int j) { #s~ITG#H
int temp = data; 7O)ATb#up
data = data[j]; }6l:'nW
data[j] = temp; Xf;!w:u
} :+YHj)mN
} TD\TVK3P