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。 "f4atuuXa
插入排序: '5}@#Mi
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package org.rut.util.algorithm.support; @QAI 0ZY
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import org.rut.util.algorithm.SortUtil; UgD&tD0fp
/** I2)#."=Ew
* @author treeroot THmmf_w@
* @since 2006-2-2 b$N&sZ
* @version 1.0 c;7`]}fGu
*/ kZNVUhW6S
public class InsertSort implements SortUtil.Sort{ x%%OgO+>
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/* (non-Javadoc) +J7xAyv_Oz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L~HL*~#d
*/ 5^C.}/#>F
public void sort(int[] data) { 2py
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int temp; ;fZ9:WB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z<,-:=BC"
} c63yJqiW
} M{ O8iq[
} m!Fx#
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} ehyCAp0oI
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冒泡排序: M6H#Y2!ZbC
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package org.rut.util.algorithm.support; Y(6 p&I
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import org.rut.util.algorithm.SortUtil; QN^AihsPi
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/** p>= b|Qy|
* @author treeroot X*e<g=
* @since 2006-2-2 ;0-Y),
* @version 1.0 e<r}{=1w
*/ dr]Pns9
public class BubbleSort implements SortUtil.Sort{ hYSf;cG}A
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pk%
/* (non-Javadoc) st wxF?\NS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1hW"#>f7
*/ {R}Kt;L:Ut
public void sort(int[] data) { E[2xo/H
int temp; WbGN
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for(int i=0;i for(int j=data.length-1;j>i;j--){ @q+X:K5b
if(data[j] SortUtil.swap(data,j,j-1); 1[ 40\ sM
} h4tAaPcS+
} LuvRxmQ`
} @aUQy;
} E{xcu9
/eY}0q%
} UpS7>c7s
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选择排序: >WmTM0
8 EUc
6
package org.rut.util.algorithm.support; pvY BhTz0
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import org.rut.util.algorithm.SortUtil; `,$PRN"]
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/** y-lBaTE9
* @author treeroot dQJ)0!B
* @since 2006-2-2 =>X"
* @version 1.0 i^hEL2S/A
*/ i2X%xYv ^
public class SelectionSort implements SortUtil.Sort { UQ}#=[)2e
sU0W)c;
/* 'oS= d
* (non-Javadoc) l9#@4Os
* 4N8(WI"4S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s_%KWkS
*/ E@_]L<Z
public void sort(int[] data) { `]j:''K
int temp; bz|-x"qk
for (int i = 0; i < data.length; i++) { dT'd C
int lowIndex = i; ?XB[awTD~
for (int j = data.length - 1; j > i; j--) { Z!2%{HQ=q
if (data[j] < data[lowIndex]) { H&!?c5
lowIndex = j; 0{qe1pb w
} ZiaHLpk
} xL$7bw5fY
SortUtil.swap(data,i,lowIndex); c|<E~_.w@
} !U4<4<+
} LGq
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} >*Ctp +X@
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Shell排序: Pd04
AYGe`{
package org.rut.util.algorithm.support; Mq52B_
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import org.rut.util.algorithm.SortUtil; ,racmxnv
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/** RiiwsnjC
* @author treeroot P@FE3g
* @since 2006-2-2 !![HR6"Q
* @version 1.0 ?g9oiOhnG
*/ pB'{_{8aA
public class ShellSort implements SortUtil.Sort{ uUJH^pW
/Suh&qw>
/* (non-Javadoc) nR8r$2B+t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >G}g=zy@
*/ Jsf"h-)P
public void sort(int[] data) { $3]]<oH
for(int i=data.length/2;i>2;i/=2){ SaFNPnk=
for(int j=0;j insertSort(data,j,i); 9i+.iuE%Bu
} ndHUQ$/(
} |syvtS{
insertSort(data,0,1); xTf|u
} 1<;G
oC"
JS^!XB'!
/** 3GPGwzX
|
* @param data k\Z7Dg$\D
* @param j 8c%_R23
* @param i ~_a$5Y
*/ cf,^7,-`"
private void insertSort(int[] data, int start, int inc) { #:s*Hy=
int temp; dU&hM<.|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 98XlcI#
} 7x#."6>Dy
} i,!t u
} 11?d,6Jl
#oJ%i+V
} =[LUOOR*]
}6!m Q
快速排序: _~bG[lX !
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package org.rut.util.algorithm.support; P(aN6)D
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import org.rut.util.algorithm.SortUtil; @ RP?)*8}&
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/** 22@w:
* @author treeroot n;e.N:p
* @since 2006-2-2 WSbD."p<
* @version 1.0 [oOV@GE
*/ a/xnf<(H
public class QuickSort implements SortUtil.Sort{ N#GMvU#R
5#~E[dr
/* (non-Javadoc) )6{,y{5!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x9\]C'*sO
*/ ={\9-JJhE
public void sort(int[] data) { H1r8n$h
quickSort(data,0,data.length-1); +}iuTqu5
} ;s?,QvE{r#
private void quickSort(int[] data,int i,int j){ tHV+#3h
int pivotIndex=(i+j)/2; f&!{o=
file://swap ,"5][RsOn
SortUtil.swap(data,pivotIndex,j); RMlx[nsq
LwcAF g|
int k=partition(data,i-1,j,data[j]); 1!;4I@W(I)
SortUtil.swap(data,k,j); 7X <#
if((k-i)>1) quickSort(data,i,k-1); Y'yGhpT~
if((j-k)>1) quickSort(data,k+1,j); +NTC!/
M8${&&[;
} ^#]eCXv
/** soh9Oedml-
* @param data ZG(Pz9{K
* @param i cnB:bQQK8
* @param j kL"Y>@H
* @return %R P\,|
*/ \G2PK&)F
private int partition(int[] data, int l, int r,int pivot) { K"8!
do{ >
1=].
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); t'[`"pp=
SortUtil.swap(data,l,r); 2 }rYH;Mx
} :{%~L4$HI
while(l SortUtil.swap(data,l,r); ('+C $
return l; BBa!le9P
} {R?VB!dR
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} b1EY6'R2
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改进后的快速排序: OlM3G^1e1
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package org.rut.util.algorithm.support; f@0Km^a Uc
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import org.rut.util.algorithm.SortUtil; ~:99
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/** O+t'E9Fa
* @author treeroot {Rq5=/b
* @since 2006-2-2 { a_&L
* @version 1.0 i93^E~q]
*/ D~)bAPAD
public class ImprovedQuickSort implements SortUtil.Sort { hVh,\d&2t
krRnE7\m
private static int MAX_STACK_SIZE=4096; f1q0*)fk
private static int THRESHOLD=10; \7G.anY
/* (non-Javadoc) [y"Yi PK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yC[Q-P *rG
*/ d
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public void sort(int[] data) { "
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int[] stack=new int[MAX_STACK_SIZE]; B#4'3Y-3
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int top=-1; nnCz!:9p
int pivot; RO| }WD)
int pivotIndex,l,r; +|qw>1J(
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stack[++top]=0; 6S^JmYq
stack[++top]=data.length-1; :XB^IyO-A
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while(top>0){ H__'K/nH+
int j=stack[top--]; i4mP*RwC
int i=stack[top--]; ~)*uJ wW/a
] -%B4lT
pivotIndex=(i+j)/2; ?@ 7Reh\
pivot=data[pivotIndex]; i<*W,D6
meZZQ:eSl
SortUtil.swap(data,pivotIndex,j); c9Q _Qr0'
k0,]2R
file://partition ;_m;:<
l=i-1; V!QC.D<
r=j; {
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do{ 8zQN[[#n
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7=a
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SortUtil.swap(data,l,r); _% i!LyG
} E+J +fi
while(l SortUtil.swap(data,l,r); Ehq
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SortUtil.swap(data,l,j); |OIU)53A-
w{ Pl
if((l-i)>THRESHOLD){ av~kF
stack[++top]=i; cXK.^@du
stack[++top]=l-1; V^_U=Ed@M
} #lF 2qw
if((j-l)>THRESHOLD){ WTu!/J<\
stack[++top]=l+1; ,;n[_f
stack[++top]=j; lD$\t/8B
} ,,G'Zur7
D[`~=y(
} -fOBM 4
file://new InsertSort().sort(data);
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insertSort(data); _z>%h>L|g
} )gV @6w
/** T1;>qgp4b
* @param data u56F;y
*/ 1i;Cw/mr
private void insertSort(int[] data) { fvj
int temp; yh{U!hG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); AsR}qqG
} <t dsUh:?&
} l0eh}d
} k=9k4l
Rg3g:TV9c
} ynJ)6n7a
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归并排序: 68~5Dx
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package org.rut.util.algorithm.support; M|7][!<G!
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import org.rut.util.algorithm.SortUtil; #v*3-) 8
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/** ON"p^o>/_?
* @author treeroot AJ
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* @since 2006-2-2 i:H]Sb)<b
* @version 1.0
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*/ !\\OMAf7
public class MergeSort implements SortUtil.Sort{ *!yA'z<
zm#%]p80f
/* (non-Javadoc) ld#YXJ;P.k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6O" y
*/ : :928y
public void sort(int[] data) { K4b2)8
int[] temp=new int[data.length]; g`4WisL1n
mergeSort(data,temp,0,data.length-1); bjq.nn<=
} o)8VJ\ &
L;fz7?_j
private void mergeSort(int[] data,int[] temp,int l,int r){ vd/ BO
int mid=(l+r)/2; N!<X%Ym
if(l==r) return ; 7A{Z1[7
mergeSort(data,temp,l,mid); seb/rxb
mergeSort(data,temp,mid+1,r); HBA|NV3.
for(int i=l;i<=r;i++){ sn+ kFvk}S
temp=data; o;>qsn8
} 6n
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int i1=l; w I[Hoi
V
int i2=mid+1; Nhtc^DX
for(int cur=l;cur<=r;cur++){ c_Iq!MH
if(i1==mid+1) a!.Y@o5Ku
data[cur]=temp[i2++]; q[x|tO
else if(i2>r) [K1z/ea)V
data[cur]=temp[i1++]; /as+ TU`A
else if(temp[i1] data[cur]=temp[i1++]; rd,!-w5
else )"%J~:`h}
data[cur]=temp[i2++]; 1";s#Jq
} <kazV<"
} xPJ@!ks9
L%Ms?`i,
} sTvw@o*
U-D00l7C
改进后的归并排序: U"Y/PBs,
'tt4"z2
package org.rut.util.algorithm.support; n{=Ot^
";
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import org.rut.util.algorithm.SortUtil; ?y,KN}s_
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/** `:d\L
H
* @author treeroot A2.4#Qb'
* @since 2006-2-2 bL|$\'S
* @version 1.0 pxCQ=0k
*/ z }Vg4\x&
public class ImprovedMergeSort implements SortUtil.Sort { 0|,Ij$
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private static final int THRESHOLD = 10; 3pyE'9"f6
4W=fQx]
/* WUb] 8$n
* (non-Javadoc) NKiWt
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* [}5mi?v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E`|vu*l7
*/ J^zB5W,)
public void sort(int[] data) { M]xfH *
int[] temp=new int[data.length]; {uxTgX
mergeSort(data,temp,0,data.length-1); I(j$^DA.
} u.}H)wt
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private void mergeSort(int[] data, int[] temp, int l, int r) { !:v7SRUXb
int i, j, k; \T?6TDZ]
int mid = (l + r) / 2; l!:L<B
if (l == r) H>%L@Btw
return; ED>P>Gg
if ((mid - l) >= THRESHOLD) 'Jd*r(2d
mergeSort(data, temp, l, mid); kpMo7n
else #!P>.".
insertSort(data, l, mid - l + 1); (/ -90u
if ((r - mid) > THRESHOLD) sYB2{w
mergeSort(data, temp, mid + 1, r); Dn`
else z~ua#(z1S
insertSort(data, mid + 1, r - mid); V14+?L
GQ sE5Vb
for (i = l; i <= mid; i++) { SQ<{X/5
temp = data; B[d%?L_
} 3 ;AJp_;
for (j = 1; j <= r - mid; j++) { I~nz~U:ak
temp[r - j + 1] = data[j + mid]; Lzx2An@R
}
spWo{
int a = temp[l]; }-
wK
int b = temp[r]; ~VV $wU!A
for (i = l, j = r, k = l; k <= r; k++) { HrUE?Sq
if (a < b) { BadnL<cj]
data[k] = temp[i++]; BN6cu9a
a = temp; DX ZZZ[#
} else { L0Ajj=
data[k] = temp[j--]; 3Te&w9K
b = temp[j]; :es=T`("A8
} Cv;#8Wj}
} JD9=gBN\?
} tD,I7%|@
B &3sV+
/** Kaji&Ibd
* @param data D-e?;<
* @param l D5Z)"~'
* @param i -op)X>
*/ fnIF<Zt
private void insertSort(int[] data, int start, int len) { c GyBml1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); tRNMiU
} KGmAnN
} ((M>To_l
} z
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} V`G^Jyj
w%(D4ldp
堆排序: k7]4TIUD*
7/iN`3Bz
package org.rut.util.algorithm.support; Yy,XKIqU
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import org.rut.util.algorithm.SortUtil; (Dn1Eov
h<qi[d4X
/** kV4L4yE
* @author treeroot +}eK8>2
* @since 2006-2-2 c= aZ[
* @version 1.0 )|W6Z
*/ uH#X:Vne
public class HeapSort implements SortUtil.Sort{ V{X/y N.u
=Z..&H5i
/* (non-Javadoc) x@D>JG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "BIhd*K[~
*/ g+Y &rz
public void sort(int[] data) { a6?t?:~|
MaxHeap h=new MaxHeap(); { T<[-"h
h.init(data); {U4{v=,!I
for(int i=0;i h.remove(); |hX\ep
System.arraycopy(h.queue,1,data,0,data.length); R7c42L\QA
} D`U,T&@
qCq?`0&#
private static class MaxHeap{ ,l.+$G
9%riB/vkrF
void init(int[] data){ S'`RP2P
this.queue=new int[data.length+1]; ,rOh*ebF
for(int i=0;i queue[++size]=data; h?vny->uJ
fixUp(size); <- R%
} 'C @yJf
} %BQ?DTtb7'
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private int size=0; 09i77
<[=[|DS l
private int[] queue; 8C*xrg#g:
sXYXBX[
public int get() { 5C9
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return queue[1]; rS+ >oP}
} z? GtC{L9
'a$/ !~X
public void remove() { |)mUO:*
SortUtil.swap(queue,1,size--); M0hR]4T
fixDown(1); g!i45]6[Nw
} Z%
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file://fixdown w^:@g~
private void fixDown(int k) { 5i'KGL
int j; e0IGx]5i
while ((j = k << 1) <= size) { QBA{*@ A-
if (j < size %26amp;%26amp; queue[j] j++; Z{2QDjAI;
if (queue[k]>queue[j]) file://不用交换 ,+x\NY2d
break; hl2|Ec
SortUtil.swap(queue,j,k); @KJmNM1]V
k = j; 3wQ\L=
} ;CuL1N#I
} G]dHYxG
private void fixUp(int k) { e~nh95
while (k > 1) { 0*j\i@
int j = k >> 1; 3f:]*U+O
if (queue[j]>queue[k]) '1d0
*5+6k
break; Hi U/fi`
SortUtil.swap(queue,j,k); %D7 '7E8.
k = j; cW?6Iao
} 4-9cp=\PE
} "&\(:#L
\aN5:Yy
} BWr!K5w>i
B)dd6R>8
} mS.!lkV
|BO5<`&I
SortUtil: >b~Q%{1
!Nbi&^k B
package org.rut.util.algorithm; `.wgRUhFH;
MfA%Xep
import org.rut.util.algorithm.support.BubbleSort; `:2np{
import org.rut.util.algorithm.support.HeapSort; kjr q;j:
import org.rut.util.algorithm.support.ImprovedMergeSort; 0|{":i_s
import org.rut.util.algorithm.support.ImprovedQuickSort; I]~s{I(EK
import org.rut.util.algorithm.support.InsertSort; ncpA\E;ff^
import org.rut.util.algorithm.support.MergeSort; T,B%iZ gCh
import org.rut.util.algorithm.support.QuickSort; QRF:6bAxsL
import org.rut.util.algorithm.support.SelectionSort; %v^qQWy=*
import org.rut.util.algorithm.support.ShellSort; k"cKxzB
G$~hAZ
/** 3Q,p,
* @author treeroot McN'J.Sxp
* @since 2006-2-2 Rli`]~!w
* @version 1.0 #t
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*/
@;[. #hK
public class SortUtil { S-brV\v7
public final static int INSERT = 1; buHUBn[3)
public final static int BUBBLE = 2; !H @nAz
public final static int SELECTION = 3; UaHN*@
public final static int SHELL = 4; fUJe{C<H
public final static int QUICK = 5; Z#K0a'
public final static int IMPROVED_QUICK = 6; Mi`t$hmP
public final static int MERGE = 7; _HAr0R8BY
public final static int IMPROVED_MERGE = 8; ke'OT>8
public final static int HEAP = 9; }-vP~I
^SS9BQ*m
public static void sort(int[] data) { ^(:n a6C
sort(data, IMPROVED_QUICK); %F<3_#Y
} t'C9;
private static String[] name={ N9z!-y'X
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"
K81&BVx/
}; + Cq&~<B
eqpnh^0}d
private static Sort[] impl=new Sort[]{ l%`~aVGJ
new InsertSort(), |~=4ZrcCP
new BubbleSort(), UQtG<W]<
new SelectionSort(), d"+ _`d=`
new ShellSort(), vY,]f^F"
new QuickSort(), Tn$|
Xa+:s
new ImprovedQuickSort(), :5:_Dr<
new MergeSort(), w aDJ
new ImprovedMergeSort(), |8\et
new HeapSort() Q}#H|@
}; >~&7D`O
S7CD#Y[s
public static String toString(int algorithm){ aIN?|Ch
return name[algorithm-1]; /ZSdY_%s
}
w Qp{z
UZE%!OWpeK
public static void sort(int[] data, int algorithm) { p+{*w7?8"[
impl[algorithm-1].sort(data); @T sdgx8
} 9(BB>o54r
o2LUB)=R'
public static interface Sort { <Q.-WV]Z
public void sort(int[] data); M5S<N_+Pe
} ?QzN\fY;
~ o5h}OU"
public static void swap(int[] data, int i, int j) { ;fv/s]X86I
int temp = data; =}W)%Hldr.
data = data[j]; ralU9MN.
data[j] = temp; hPUYq7B
} 3[To"You
} KYFkO~N