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。 XjXz#0nR
插入排序: ,Dab(
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package org.rut.util.algorithm.support; V_3K((P6
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import org.rut.util.algorithm.SortUtil; gb{8SG5ac
/** :\Q#W4~p
* @author treeroot T@jv0/(+
* @since 2006-2-2 6bDizS}
* @version 1.0 ~_SRcM{
*/ i@`qam
public class InsertSort implements SortUtil.Sort{ %(1Jt"9|
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/* (non-Javadoc) }Uu#N H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hnimd~E52k
*/ g4 3(N!@g
public void sort(int[] data) { &gF9VY
int temp; ~ <36vsk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I@oSRB
} WF_v>g:g
} gNJdP!(t
} 11vAx9
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} y?V^S;}&]
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冒泡排序: %Yt;)q3U
K&VMhMVb
package org.rut.util.algorithm.support; r=HL!XFk
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import org.rut.util.algorithm.SortUtil; G<-<>)zO!
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/** )(9[> _+40
* @author treeroot ^z`d2it
* @since 2006-2-2 3bRW]mP8
* @version 1.0 q/^?rd
*/ ||L^yI~_d
public class BubbleSort implements SortUtil.Sort{ }_BNi;H
nAC>']K4$
/* (non-Javadoc) 3a|pk4M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h1H$3TpP
*/ &hUEOif
public void sort(int[] data) { H$V`,=H
int temp; dT0>\9ZNr
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;|`<B7xf
if(data[j] SortUtil.swap(data,j,j-1); 7p-
RPC
} -'F27])
} xI_0`@do
} 0NK|3]p
} i;atYltEJ2
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} X~cdM1z?
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选择排序: UfIr"bU6
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~4na{6x
package org.rut.util.algorithm.support; $;&l{=e2)
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import org.rut.util.algorithm.SortUtil; z9!OzGtIR
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/** _K&Hiz/'
* @author treeroot XG!6[o;
* @since 2006-2-2 )~Gn7
* @version 1.0 h@z0 x4_])
*/ %LM6=nt
public class SelectionSort implements SortUtil.Sort { PCHKH
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/* `8r$b/6
* (non-Javadoc) J$PlI
* F9Af{*Jw?x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lMH~J8U3
*/ l,~`o$_
public void sort(int[] data) { x]@z.Yj
int temp; r\cY R}v
for (int i = 0; i < data.length; i++) { 9Z }<H/q
int lowIndex = i; t(dVd%
for (int j = data.length - 1; j > i; j--) { R={#V8D~
if (data[j] < data[lowIndex]) { 6$0<&')Yb
lowIndex = j; OwEu S#-
} tJ7F.}\;C
} PD^G$LT
SortUtil.swap(data,i,lowIndex); Y9gw
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} jABFdNjri
} 4AKr.a0q
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} 4l{$dtKbI
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Shell排序: Mna
yiJl
c%WO#}r|
package org.rut.util.algorithm.support; <W>A }}q
~ g-(
import org.rut.util.algorithm.SortUtil; m"-kkH{I
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/** ;aj;(Z.p)
* @author treeroot AloL+eN@
* @since 2006-2-2 pF7N = mO
* @version 1.0 <f`n[QD2z
*/ }#-@5["-X
public class ShellSort implements SortUtil.Sort{ `qYiic%
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/* (non-Javadoc) LR{bNV[i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0}"\3EdAbD
*/ E
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public void sort(int[] data) { 1C<d^D_!p
for(int i=data.length/2;i>2;i/=2){ V0rQtxE{F
for(int j=0;j insertSort(data,j,i); @?3^Ks_
} k s\q^ten
} -`DYDIr
insertSort(data,0,1); (~%NRH<\
} [u$|/
i39ZBs@
/** D(;+my2
* @param data C
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* @param j o[}Dj6e\t
* @param i \|9B:y'y
*/ G0|}s&$yL
private void insertSort(int[] data, int start, int inc) { $,J0) ~
int temp; 4H(8BNgzV
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +7o1&D*v
} P3]K'*Dyd
} c|JQ0] K
} IG# wY
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} FwlDP
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快速排序: b_ak@LYiu
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package org.rut.util.algorithm.support; tW4X+d"
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import org.rut.util.algorithm.SortUtil; ]hS<"=oj
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/** CuH4~6
* @author treeroot -3i(N.)<;
* @since 2006-2-2 AWi>(wk<
* @version 1.0 c+E \e] {
*/ !L8q]]'XM
public class QuickSort implements SortUtil.Sort{ Sir1>YEm
MH#"dGGu
/* (non-Javadoc) fkp(M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A$N%deb
*/ 6IV):S~
public void sort(int[] data) { &Z[+V)6,,
quickSort(data,0,data.length-1); Pj]^p{>
} (3mL!1\
private void quickSort(int[] data,int i,int j){ p<(a);<L
int pivotIndex=(i+j)/2; zn 0y`9!n?
file://swap <Vk}U
SortUtil.swap(data,pivotIndex,j); @IsUY(Gu
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int k=partition(data,i-1,j,data[j]); xT_"` @
SortUtil.swap(data,k,j); |" WL
if((k-i)>1) quickSort(data,i,k-1); P7b"(G%
if((j-k)>1) quickSort(data,k+1,j); vD9\i*\2
>qB`03>
} |n)4APX\Q
/** F<4:P=
* @param data yna!L@ *@,
* @param i JZ`SV}\`
* @param j f.uuXK
* @return krFp q;
*/ |f @A-d X
private int partition(int[] data, int l, int r,int pivot) { 2w3LK2`ZL
do{ i
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u-|%K.A
SortUtil.swap(data,l,r); >oWPwXA
} 8^+|I,
while(l SortUtil.swap(data,l,r); X4S|JT
return l; \Db;7wh
} eu" m0Q
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} h6?^rS8U
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改进后的快速排序: )K@D4sl
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package org.rut.util.algorithm.support; "Ot%{&:2
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import org.rut.util.algorithm.SortUtil; BHAFO E
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/** >QvqH 2
* @author treeroot 1Z)P.9c
* @since 2006-2-2 hWbu
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* @version 1.0 #*.4Jv<R
*/ +58^{_k+%
public class ImprovedQuickSort implements SortUtil.Sort { .<>t2,Af
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private static int MAX_STACK_SIZE=4096; zA6C{L G3
private static int THRESHOLD=10; z+;$cfN
/* (non-Javadoc) )cRHt:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :FC)+OmJ
*/ hNZ_=
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public void sort(int[] data) { 9&=%shOc+x
int[] stack=new int[MAX_STACK_SIZE]; 1}|y^oB\-
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int top=-1; jZqa+nG51
int pivot; [dP<A?s
int pivotIndex,l,r; ]Xnar:5
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stack[++top]=0; u`Nrg<
stack[++top]=data.length-1; ";(m,if-
qXq#A&
while(top>0){ nbP}a?XC
int j=stack[top--]; :KvZP:T
int i=stack[top--]; &$CyT6mb^
cJq{;~
pivotIndex=(i+j)/2; 6x(b/`VW
pivot=data[pivotIndex]; @q<h.#9
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SortUtil.swap(data,pivotIndex,j); }0E@eL
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file://partition 9-m_
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l=i-1; /G7^ l>pa
r=j;
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do{ i: UN
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); UdkNb}L
SortUtil.swap(data,l,r); 2 N &B
} }])j>E
while(l SortUtil.swap(data,l,r); [7`S`\_NK
SortUtil.swap(data,l,j); N/{=j
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if((l-i)>THRESHOLD){ 4xs>X7
stack[++top]=i; }W " i{s/
stack[++top]=l-1; B\AyG4J
} r\b$/:y<e
if((j-l)>THRESHOLD){ -6F\=
stack[++top]=l+1; u{WI 4n?
stack[++top]=j; aF"PB
h=
} ]nIVP
f~=e
} }o
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file://new InsertSort().sort(data); "0G)S'
insertSort(data); Qx EmuiN
} O&.gc p!
/** uKIR$n"
* @param data iN
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*/ 0""%@X]m
private void insertSort(int[] data) { 4yxf/X)
int temp;
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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); 65&+Fv
} }VH`\g}
} z9AX8k(B6
} E0r#xmk
:]\-GJV5
} ezJ^
r,D|
M#],#o*G
归并排序: 9J49s1
u`+kH8#
package org.rut.util.algorithm.support; y>UQm|o<W
/WAOpf5
import org.rut.util.algorithm.SortUtil; `a7b,d
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/** O'~^wu.
* @author treeroot <3k9 y^0
* @since 2006-2-2 \@6w;tyi
* @version 1.0 zBrqh9%8e
*/ i"!j:YEo
public class MergeSort implements SortUtil.Sort{ $I4JKh
g fv?#mp
/* (non-Javadoc) :NwFJc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XHuHbriI
*/ z*^vdi0
public void sort(int[] data) { viS7+E|O
int[] temp=new int[data.length]; Y-DHW/Z~
mergeSort(data,temp,0,data.length-1); $*0XWrE
} rJd-e96
F+Hmp\rM#
private void mergeSort(int[] data,int[] temp,int l,int r){ [ dVRVm0N
int mid=(l+r)/2; m<4tH5};d
if(l==r) return ; W6*5e{
mergeSort(data,temp,l,mid); z{>
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mergeSort(data,temp,mid+1,r); <e8Ux#x/
for(int i=l;i<=r;i++){ =p!Hl#
temp=data;
5&U?\YNLa
} $>l65)(E\
int i1=l; l=&Va+K
int i2=mid+1; 1NlpOVq:)
for(int cur=l;cur<=r;cur++){ ^''3}<Ep
if(i1==mid+1) 60p*4>^v
data[cur]=temp[i2++]; c30kb
else if(i2>r) *zPz)3;
data[cur]=temp[i1++]; t+WUz#i"
else if(temp[i1] data[cur]=temp[i1++]; 5@Xy) z
else [ 3SbWwg
data[cur]=temp[i2++]; Kv\uBMJNW
} P<xCg
} Wf$P+i*
,n{|d33
} _3Q8R}
A}03s6^i;
改进后的归并排序: .TRp74
4L6'4 t"s
package org.rut.util.algorithm.support; 0_map z
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import org.rut.util.algorithm.SortUtil; ?)c9!hR
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/** 1QuR7p
* @author treeroot !='&#@7u
* @since 2006-2-2 XM*%n8q7#N
* @version 1.0 ?[Qxq34
*/ RZKczZGZg
public class ImprovedMergeSort implements SortUtil.Sort { L)Ru]X`
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private static final int THRESHOLD = 10; &uTK@ G+
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/* Rwz (20n\^
* (non-Javadoc) ApAHa]Ccp
* (=i+{
3`|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DKf:0E8
*/ _Nq7_iT0
public void sort(int[] data) { >_?Waz%
int[] temp=new int[data.length]; <~!R|5sK
mergeSort(data,temp,0,data.length-1); !Ry4w|w
} *[['X%f
2SVJKX_V+
private void mergeSort(int[] data, int[] temp, int l, int r) { z2A1h!Me
int i, j, k; 7(= 09z
int mid = (l + r) / 2; K~>ESMZ5
if (l == r) 3/((7O[
return; < G:G/
if ((mid - l) >= THRESHOLD) ob.=QQQs
mergeSort(data, temp, l, mid); {5gh.
else -r"h[UV)
insertSort(data, l, mid - l + 1); iYxpIqWw
if ((r - mid) > THRESHOLD) 8(A+"H(
mergeSort(data, temp, mid + 1, r); gkDlh{
else _"%-=^_
insertSort(data, mid + 1, r - mid); `~3y[j]kO
js\|xfDxP
for (i = l; i <= mid; i++) { ~~'UQnUN4
temp = data; )[hQK_e]
} .q7o7J%
for (j = 1; j <= r - mid; j++) { ;7Y4v`m
temp[r - j + 1] = data[j + mid]; VpkkiN
} y\"Kur*O
int a = temp[l]; G+xdh
int b = temp[r]; )`.'QW
for (i = l, j = r, k = l; k <= r; k++) { qB IKJ
if (a < b) { eyGY8fF8$
data[k] = temp[i++]; ]p2M!N,?
a = temp; ,] ,dOIOwn
} else { 9W<I~
data[k] = temp[j--]; >w"k:O17
b = temp[j]; CwVORf,uA
} ^8yhx-mgb
} wtw
} S>pbplE
=9JKg4I6
/** 5 J9,/M0
* @param data )9QeVf
* @param l k9<P]%
* @param i ]2P*Z6Az
*/ L.@o
private void insertSort(int[] data, int start, int len) { .-g++f(_i
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); KDX34Fr1
} \{ui{8+G
} nZ 0rxx[V?
} U&\8~h
} <X_I`
3o=K?eOdg
堆排序: pkL&j<{
>)3[CU,
package org.rut.util.algorithm.support; ,1+)qv#|i
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import org.rut.util.algorithm.SortUtil; @dzO{)
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/** T~rPpi&
* @author treeroot C&vUZa[p
* @since 2006-2-2 Q,mmHw.`J
* @version 1.0 q^_PR|
*/ 3i'L5f67
public class HeapSort implements SortUtil.Sort{ Xn'{g
}qf)L.
/* (non-Javadoc) .*s1d)\:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dt(#|8i%
*/ Rx22W:S=C.
public void sort(int[] data) { ,wN>,(
MaxHeap h=new MaxHeap(); [y}0X^9,E
h.init(data); Ty21-0F
for(int i=0;i h.remove(); =;9*gDf D
System.arraycopy(h.queue,1,data,0,data.length); yqm^4)Dp
} <I{)p;u1
aD1G\*AFJ
private static class MaxHeap{ M@V.?;F},
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void init(int[] data){ VE<&0d<
this.queue=new int[data.length+1]; m\88Etl@
for(int i=0;i queue[++size]=data; o#-K,|-
fixUp(size); /^kZ}}9baU
} .'q0*Pe
} J<<0U;
<=
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private int size=0; +|N!(H
,[lS)`G
private int[] queue; ix<sorR H
k#I4^
public int get() { hDp
-,ag{
return queue[1]; JwNG`MGc
} K>2mm!{
yE(> R(^
public void remove() { a+TlZE>8
SortUtil.swap(queue,1,size--); pFLR!/J
fixDown(1); 9~^%v zM
} `43`*=
file://fixdown 8Q&hhmOnz
private void fixDown(int k) { wr/Z)e =^3
int j; ][|)qQ%V
while ((j = k << 1) <= size) { meHAa`
if (j < size %26amp;%26amp; queue[j] j++; ]E1aIt
if (queue[k]>queue[j]) file://不用交换 Qo!/]\
break; ckXJ9>
SortUtil.swap(queue,j,k); ik@g; >pQD
k = j; MVW2%6
} 7T]}<aK<c[
} dsKEWZ
=
private void fixUp(int k) { 3McBTa!
while (k > 1) { ZqHh$QBD
9
int j = k >> 1; .D^=vuxt~
if (queue[j]>queue[k]) ,!BiB*
break; +)C?v&N
SortUtil.swap(queue,j,k); <n iq*
k = j; 5G@z l
} M+X>!Os
} `c^ _5:euX
$d4^e&s
} uP\?y(="
}b-"[TDEF
} FqOV/B
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Y|t] bb
SortUtil: bJJB*$jW=
m L#-U)?F
package org.rut.util.algorithm; !@9Vq6
d&:ABI
import org.rut.util.algorithm.support.BubbleSort; fZ2>%IxG}
import org.rut.util.algorithm.support.HeapSort; P;D)5yP092
import org.rut.util.algorithm.support.ImprovedMergeSort; X'4g\)*
import org.rut.util.algorithm.support.ImprovedQuickSort; / c1=`OJ
import org.rut.util.algorithm.support.InsertSort; Fi+v:L|
import org.rut.util.algorithm.support.MergeSort; A2{u("^[6
import org.rut.util.algorithm.support.QuickSort; #>+O=YO
import org.rut.util.algorithm.support.SelectionSort; - Dm/7Sxd`
import org.rut.util.algorithm.support.ShellSort; 7q>WO
-hav/7g
/** p/|]])2
* @author treeroot uFDJRQJ<
* @since 2006-2-2 %oasIiO
* @version 1.0 'u }|~u?m
*/ ;iJ*.wVq
public class SortUtil { 5CZii=@
public final static int INSERT = 1; e"u=4nk
public final static int BUBBLE = 2; WQ/H8rOs
public final static int SELECTION = 3; {=WTAgP
public final static int SHELL = 4; &?m|PK) I
public final static int QUICK = 5; 9NTBdo%u
public final static int IMPROVED_QUICK = 6; CO e"te
public final static int MERGE = 7; C%ibIcm y
public final static int IMPROVED_MERGE = 8; zQJ9V\0
public final static int HEAP = 9; -~O7.E(ok
o}&TFhT
public static void sort(int[] data) { gTE/g'3
sort(data, IMPROVED_QUICK); kB-%T66\
} z; 6Tp
private static String[] name={ @^8tk3$Y
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" bmT_tNz
}; A;nrr1-0
5mwtlC':l?
private static Sort[] impl=new Sort[]{ h}&WBN
new InsertSort(), iUl5yq
new BubbleSort(), .4c* _$
new SelectionSort(), YPQ&hEu0
new ShellSort(), TfaL5evio
new QuickSort(), vT)(#0>z
new ImprovedQuickSort(), R=g~od[N_
new MergeSort(), 7iCH$}
new ImprovedMergeSort(), ~Zbr7zVn
new HeapSort() J0BA@jH5
}; %$/t`'&o-
hu (h'
public static String toString(int algorithm){ bD_|n!3
return name[algorithm-1]; x8i;uH\8
} BsV2Q`(gT
km1{Oh
public static void sort(int[] data, int algorithm) { QR<z%4
impl[algorithm-1].sort(data); |QwX
} \M~M
Y !e
public static interface Sort { 0|<ER3xkx
public void sort(int[] data); 4G`7]<
} Ws"eF0,'Z
gBQK
public static void swap(int[] data, int i, int j) { =e'b*KTL,
int temp = data; Jh2eo+/%
data = data[j]; _=9o:F
data[j] = temp; EoM}Co
} KI~BjP\e
} QAYhAOS|e