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。 ;:fW]5"R
插入排序: =~GP;=6
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package org.rut.util.algorithm.support; (?fU l$q\
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import org.rut.util.algorithm.SortUtil; }l|S]m!
/** 6OAs%QZ
* @author treeroot #$I@V4O;#
* @since 2006-2-2 YQn<CjZ8af
* @version 1.0 "XR=P>
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*/ wlT8|
public class InsertSort implements SortUtil.Sort{ STp9Gh-
L~Gr,i
/* (non-Javadoc) C9!t&<\}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K*SgEkb'l
*/ V4:/LNq_]
public void sort(int[] data) { Y~WdN<g
int temp; fQJ`&9m*BF
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]YgR
} H<(F$7Q!\
} D\acA?d`
} ~U0%}Bbh
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} y9r4]45
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冒泡排序: `tk oS
BNfj0e 5b
package org.rut.util.algorithm.support; )`DVPudiy
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import org.rut.util.algorithm.SortUtil; yQ$irS?
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/** .a.HaBBV
* @author treeroot }QFL
* @since 2006-2-2 ~"#0rPT
* @version 1.0 ?veeW6E(
*/ ,/\`Rc^n
public class BubbleSort implements SortUtil.Sort{ oY)eN?c
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/* (non-Javadoc) /)ZjI
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FDMQLx f
*/ jHFjd'
public void sort(int[] data) { Uwc%'=@
int temp; Lce,]z\_
for(int i=0;i for(int j=data.length-1;j>i;j--){ .z>/A/&+
if(data[j] SortUtil.swap(data,j,j-1); C/k#gLF`
} Kh]es,$D
} j3Od7bBS]
} f%]@e9dD
} hX.cdt_?
/Q1 b%C
} 7=P)` @
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选择排序: $*C
}iJsF
N]P~`)
package org.rut.util.algorithm.support; SZWNN#w60?
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import org.rut.util.algorithm.SortUtil; suN6(p(.
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/** q8{Bx03m6
* @author treeroot LJeq{Z
* @since 2006-2-2 REh"/d
* @version 1.0 opfnIkCe
*/ S5).\1m h[
public class SelectionSort implements SortUtil.Sort { 56pj(}eq
)G2Bx+Z;L
/* ygz2bHpD~
* (non-Javadoc) 7P$*qj~Vh
* NS[ Z@@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jJ2rfdfj
*/ 6()Jx%
public void sort(int[] data) { !X}+JeU'
int temp; MT{1/A;`)
for (int i = 0; i < data.length; i++) {
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int lowIndex = i; u>'0Xo9R
for (int j = data.length - 1; j > i; j--) { ToHx!,tDS
if (data[j] < data[lowIndex]) { MV5$e
lowIndex = j; 5RT#H0/+
} D1RQkAZS
} |j+JLB
SortUtil.swap(data,i,lowIndex); !zK"y[V
}
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} [Q T ;~5
) 8xbc&M
} c]*yo
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Shell排序: z(A60b}
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package org.rut.util.algorithm.support; Ku'a,\7z
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import org.rut.util.algorithm.SortUtil; }0&Fu?sP
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/** |E6Thvl$
* @author treeroot Bl>m`/\1i
* @since 2006-2-2 \(??Ytc<B
* @version 1.0 *L<EGFP
*/ f#c}}>V8
public class ShellSort implements SortUtil.Sort{ 6GuTd
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/* (non-Javadoc) @kSfF[4H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X}GX6qAdt
*/ i6bUJtL
public void sort(int[] data) { -']Idn6
for(int i=data.length/2;i>2;i/=2){ EuHQp7
for(int j=0;j insertSort(data,j,i); 3X Y"s"
} H0b{`!'Fs:
} _E9[4%f
insertSort(data,0,1); ;-JF1p 7;
} b0}dy\dnQ
d\-*Fmp(S
/** `"~GqFwy~
* @param data @CM5e!
* @param j 0s8fF"$
* @param i :H>I`)bw
*/ /\e_B6pF<
private void insertSort(int[] data, int start, int inc) { [#!Y7Ede
int temp; $JOtUB{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {JdXn
} gR/?MJ(v
} 2 6}3
} q"269W:
|zRrGQYm
} BuvnY
*QN,wBQ
快速排序: XnYX@p
/QB;0PrE
package org.rut.util.algorithm.support; LmY[{.'tX
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import org.rut.util.algorithm.SortUtil; (<.\v@7HC
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/** +L=Xc^
* @author treeroot E
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* @since 2006-2-2 md bi@ms@
* @version 1.0 BJ_"FG
*/ jcC"vr'u|
public class QuickSort implements SortUtil.Sort{ y ~-v0/
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/* (non-Javadoc) Y{~`g(~9_A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UOj*Gt&
*/ ,5U[#6^
public void sort(int[] data) { M]%dFQ
quickSort(data,0,data.length-1); N*[b26
} J>M 9t%f@
private void quickSort(int[] data,int i,int j){ ~[F7M{LS
int pivotIndex=(i+j)/2; h}tC+_"D
file://swap Js:U1q
SortUtil.swap(data,pivotIndex,j); q`8
5-
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int k=partition(data,i-1,j,data[j]); p5"pQeS
SortUtil.swap(data,k,j); ZJ+ad,?,
if((k-i)>1) quickSort(data,i,k-1); xVYa-I[Z
if((j-k)>1) quickSort(data,k+1,j); Z0M,YSn z
KL!cPnAUu
} CL`+\
.
/** T++q.oFc
* @param data @#^Y#
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* @param i "Uf1;;b
* @param j /V cbT >=
* @return }Z\S__\9
*/ M*cF'go
private int partition(int[] data, int l, int r,int pivot) { FbMtor
do{ y5KeUMcu
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LRaO}-<b
SortUtil.swap(data,l,r); {2Ew^Li
} :
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while(l SortUtil.swap(data,l,r); ;K7kBp\d
return l; T#6g5Jnsp
} Kwm_Y5`A
X.
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} LN.*gGl
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改进后的快速排序: FSz<R*2
L%3Bp/`S
package org.rut.util.algorithm.support; $e4N4e2x/
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import org.rut.util.algorithm.SortUtil; vgDpo@fz8
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/** v>nBdpjXh
* @author treeroot E
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* @since 2006-2-2 l{]KA4
* @version 1.0 Yv)c\hm(7j
*/ m6^#pqSL
public class ImprovedQuickSort implements SortUtil.Sort { _OJfd
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private static int MAX_STACK_SIZE=4096; $0OOH4
private static int THRESHOLD=10; &PApO{#Q
/* (non-Javadoc) ai?N!RX%H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SHB'g){P
*/ x![.C,O
public void sort(int[] data) { LXJ;8uW2y
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; k'
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int pivot; g]N'6La
int pivotIndex,l,r; lIx./Nf
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stack[++top]=0; Ahba1\,N$
stack[++top]=data.length-1; ~:0w%
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while(top>0){ ~#P]NWW%.
int j=stack[top--]; E`@Z9k1 `
int i=stack[top--]; <I2ENo5?
k?L2LIB<
pivotIndex=(i+j)/2; SsZSR.tD
pivot=data[pivotIndex]; z$~F9Es9
I
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SortUtil.swap(data,pivotIndex,j); Olh{<~Fv
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file://partition dS <*DP
l=i-1; ;PMh>ZE`
r=j; D *PEIsV
do{ 3iX\):4
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `$6~QLUf
SortUtil.swap(data,l,r); o[WDPIG
} }a9G,@:k
while(l SortUtil.swap(data,l,r); u3,O)[qV
SortUtil.swap(data,l,j); Uey'c1
]e7?l/N[
if((l-i)>THRESHOLD){ e3p:lu
stack[++top]=i; Ok\X%avq
stack[++top]=l-1; n|rKo<Y0
} f{[0;qDJ
if((j-l)>THRESHOLD){ IFS_DW
stack[++top]=l+1; R?9x!@BV
stack[++top]=j; hOj+z?
} f^"pZS
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} q TN)2G
file://new InsertSort().sort(data);
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insertSort(data); I_->vC|>
} Z0-?;jA@
/** >}O}~$o
* @param data -TG ="U
*/ '6>*J
private void insertSort(int[] data) { { %]imf|g.
int temp; J>nBTY,_<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hh%?E\qM
} 3b]M\F9
} %+Z*-iX
} iI7ocyUv
h4F%lGot
} 3/Z>W|w#w
ez*QP|F*9
归并排序: 02*qf:kTnA
8=joVbs
package org.rut.util.algorithm.support; udLI AV*
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import org.rut.util.algorithm.SortUtil; fxr#T'i
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/** sO6=w%l^
* @author treeroot iT,7jd?6#
* @since 2006-2-2 2E!~RjxSY
* @version 1.0 btq4diW
*/ nQ_{IO8/6W
public class MergeSort implements SortUtil.Sort{ ~) w4Tq
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/* (non-Javadoc) S 593wfc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g; ]'
*/ PRTjXq6)5
public void sort(int[] data) { 324XoMO
int[] temp=new int[data.length]; &g^*ep~|#
mergeSort(data,temp,0,data.length-1); <.gDg?'3
} "2sk1
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private void mergeSort(int[] data,int[] temp,int l,int r){ y*-_
int mid=(l+r)/2; fPPP|
if(l==r) return ; 0*rD'?)K+
mergeSort(data,temp,l,mid); (?zD!%
k
mergeSort(data,temp,mid+1,r); *tEqu%N1'
for(int i=l;i<=r;i++){ :Ez,GA k
temp=data; X|eZpIA45
} xLOQu.
int i1=l; DHw)]WB M
int i2=mid+1; d,JDfG)
for(int cur=l;cur<=r;cur++){ OVe0{}
j
if(i1==mid+1) \'*M
}G
data[cur]=temp[i2++]; }shxEsq
else if(i2>r) ozRTY9S
_;
data[cur]=temp[i1++]; N~mr@rXC
else if(temp[i1] data[cur]=temp[i1++]; l$/lbwi%
else C=r2fc~w
data[cur]=temp[i2++]; Em@:QmEN
} 9iZio3m
} Xzf,S;XV~
0zq'Nf?#3
} S\&3t}_
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改进后的归并排序: %g.cE}^
p,$N-22a
package org.rut.util.algorithm.support; \?^2}K/
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import org.rut.util.algorithm.SortUtil; $%cc[[/U
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/** 4#0 3x:/<\
* @author treeroot =ZIT!B?4
* @since 2006-2-2 f=R+]XPzz
* @version 1.0 gaY&2
*/ >dt*^}*
public class ImprovedMergeSort implements SortUtil.Sort { Ms(xQ[#+
gK[;"R)4o@
private static final int THRESHOLD = 10; tZ9i/ =S
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/* Ytlzn%
* (non-Javadoc) 3$k#bC
* e;6KxvX~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SE]5cJ'>
*/ uD&B{c+a
public void sort(int[] data) { rXX>I;`&
int[] temp=new int[data.length]; PWpt\g
mergeSort(data,temp,0,data.length-1); /^BC
Qaj
}
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<s'de$[
private void mergeSort(int[] data, int[] temp, int l, int r) { "+"=iwEAz
int i, j, k; \@:,A]
int mid = (l + r) / 2; Y7VO:o
if (l == r) sV
return; .Q*X5Fc
if ((mid - l) >= THRESHOLD) }#O!GG{
mergeSort(data, temp, l, mid); ^QRg9s,T<
else #]@HsVXh7
insertSort(data, l, mid - l + 1); @dDeOnF
if ((r - mid) > THRESHOLD) pFd8p@m_2
mergeSort(data, temp, mid + 1, r); LSJ?;Zg(=z
else d]l8ei@>h
insertSort(data, mid + 1, r - mid); e{P v:jl
-Ks>s
for (i = l; i <= mid; i++) { w6%
Q"%rp
temp = data; m.e]tTe
} )?*YrWO{
for (j = 1; j <= r - mid; j++) { I9*cEZ!l=e
temp[r - j + 1] = data[j + mid]; n~* ".ZC'Y
} =^nb+}Nz(
int a = temp[l];
B )r-,M
int b = temp[r]; A IP~A]T
for (i = l, j = r, k = l; k <= r; k++) { az(<<2=
if (a < b) { (CmK>"C+
data[k] = temp[i++]; >M,oyM"s
a = temp; $RaN@& Wm
} else { *glZb;_
data[k] = temp[j--]; +$,Re.WnP
b = temp[j]; O<gfZ>
} T
pkSY`T
} 7^q~a(j
} fGo4&( U
@p+;iS1}
/** xAQtX=FoX+
* @param data V8?}I)#(7
* @param l K9lgDk"i
* @param i %z><)7
*/ iQwQ5m!d &
private void insertSort(int[] data, int start, int len) { yGZsNd {a&
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); S(Yd.Sp
} \c=I!<9
} {*ak>Wud
} $cCC
1=dW
} V#t_gS
X
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堆排序: Kx__&a
j i"g)d6
package org.rut.util.algorithm.support; 7RAB"T;?Q
IS bs l=F
import org.rut.util.algorithm.SortUtil; &],uD3:5O
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/** `Lf'/q
* @author treeroot !>8~R2
* @since 2006-2-2 ;;Q^/rkC
* @version 1.0 )O]T}eI
*/ @;Ttdwg#J
public class HeapSort implements SortUtil.Sort{ 6o3
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/* (non-Javadoc) NO"PO
@&Wk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ccf/hA#mb
*/ +eM${JyXH
public void sort(int[] data) { XpIiJry!6
MaxHeap h=new MaxHeap(); a&y^Ps6=
h.init(data); c7Z4u|G
for(int i=0;i h.remove(); Zp_(vOc
System.arraycopy(h.queue,1,data,0,data.length); -Mt
5< s
} [4Z 31v>
XpQ Ol
private static class MaxHeap{ S&op|Z)1
U=on}W3V2
void init(int[] data){ T(4d5 fY
this.queue=new int[data.length+1]; <qCa9@Ea
for(int i=0;i queue[++size]=data; Hd|l6/[xz
fixUp(size); 7io["zW
} :$ 5A3i
} z*y!Ml1
S2~cAhR|M
private int size=0; nR!e(
30Q
p^)K
private int[] queue; 0&.CAHb}
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public int get() { |D3u"Y!:^
return queue[1]; Q M,!-~t
} &K)8
weitDr6
public void remove() { I$Nh|eM
SortUtil.swap(queue,1,size--); o_b[ *
fixDown(1); cPGlT"
} |m19fg3u
file://fixdown
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private void fixDown(int k) { ;|N:FG
int j; Tt[zSlIMx
while ((j = k << 1) <= size) { BG{f)2F\
if (j < size %26amp;%26amp; queue[j] j++; 'm%{Rz>j
if (queue[k]>queue[j]) file://不用交换 R;& >PFmq
break; 8#I>`z^F
SortUtil.swap(queue,j,k); I-7LT?r
k = j; W+nu=iQ!
} SGd]o"VF
} @u3`lhUcT
private void fixUp(int k) { MfTLa)Rz
while (k > 1) { #c!:&9oU
int j = k >> 1; NzRvb j]
if (queue[j]>queue[k]) jXcJ/g(X3
break; )n/%P4l
SortUtil.swap(queue,j,k); QaX.Av
k = j; lG*Rw-?a
} 5:Qz
} od;-D~
bP,<^zA|X
} r@r%qkh(.@
0r]n
0?x
} 0QQss
Zw]`z*,yRA
SortUtil: yu?5t?vf
XGlt^<`
package org.rut.util.algorithm; F c[KIG3@
ffCDO\i({
import org.rut.util.algorithm.support.BubbleSort; E' 5*w6
import org.rut.util.algorithm.support.HeapSort; f49kf**
import org.rut.util.algorithm.support.ImprovedMergeSort; @|!4X(2
import org.rut.util.algorithm.support.ImprovedQuickSort; |J`EM7qMK
import org.rut.util.algorithm.support.InsertSort; TyxIlI4"
import org.rut.util.algorithm.support.MergeSort; :-&|QVH
import org.rut.util.algorithm.support.QuickSort; -"(*'hD
import org.rut.util.algorithm.support.SelectionSort; r^9l/H~$
import org.rut.util.algorithm.support.ShellSort; BEZ~<E&0H
\?bV\/GBR
/**
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* @author treeroot w$gvgz
* @since 2006-2-2 R^Rc!G}
* @version 1.0 (su,=Z
*/ r4.6W[|d
public class SortUtil { T&U}}iWN
public final static int INSERT = 1; eK8H5YE
public final static int BUBBLE = 2; ia6 jiW x
public final static int SELECTION = 3; U~
{k_'-i
public final static int SHELL = 4; ,OZ
public final static int QUICK = 5; *7Dba5B
public final static int IMPROVED_QUICK = 6; P-m_],
public final static int MERGE = 7; ]A4=/6`g?b
public final static int IMPROVED_MERGE = 8; {f*Y}/@
public final static int HEAP = 9; OhF55,[
~{x1/eH
public static void sort(int[] data) { 3F9V,zWtTi
sort(data, IMPROVED_QUICK); ;5a$OM
} O5dS$[`j\p
private static String[] name={ <H[w0Z$
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \u=d`}E
}; `At.$3B
2Gyq40
private static Sort[] impl=new Sort[]{ $CcjuPsK
new InsertSort(), %wD#[<BGn>
new BubbleSort(), yCX5
5:
new SelectionSort(),
l\U
Q2i
new ShellSort(), 'Kelq$dn#
new QuickSort(), 68%aDs
new ImprovedQuickSort(), *4O=4F)x
new MergeSort(), Wzq
W1<*`
new ImprovedMergeSort(), 5C w(
4.
new HeapSort() p^l#Wq5
}; uH_KOiF
dg D-"-O
public static String toString(int algorithm){ mY|c7}>V;
return name[algorithm-1]; sA0Ho6
} zI88IM7/
!E7gIqo
public static void sort(int[] data, int algorithm) { KbJ6U75|f
impl[algorithm-1].sort(data); ^0,}y]5p
} aRd~T6I
o'Bd. B
public static interface Sort { 6:1`lsP
public void sort(int[] data); tldT(E6
} [i.@q}c~E
V:0IBbh)w
public static void swap(int[] data, int i, int j) { }_Bo:*9B-o
int temp = data; lH fZw})d
data = data[j]; gt4GN`-k
data[j] = temp; ]aN9mT
N
} O[X*F2LC4
} g 2Fg