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。 vIU+ZdBw
插入排序: I.R3?+tZ
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package org.rut.util.algorithm.support; ^K@r!)We
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import org.rut.util.algorithm.SortUtil; vc6UA%/f
/** tt[P{mMQ
* @author treeroot 98Srn63O
* @since 2006-2-2 ="@W)"r
* @version 1.0 1?(BWX)7
*/ Qu!\Cx@
public class InsertSort implements SortUtil.Sort{ <tf4j3lwH
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/* (non-Javadoc) v7Knu]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <ofXNv;`
*/ X$/3
public void sort(int[] data) { \q3H#1A
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); f*XF"@ZQV
} z$7YC49^
} +Jt"JJ>% k
} TzPx4L6?
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} Hxb{bF
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冒泡排序: W{ eu_
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package org.rut.util.algorithm.support; P|h<|Gcp
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import org.rut.util.algorithm.SortUtil; Da-F(^E
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/** Pdf_{8r
* @author treeroot sB0+21'R
* @since 2006-2-2 ?jqZeO#W7
* @version 1.0 ivoPl~)J
*/ 82$By]Y9
public class BubbleSort implements SortUtil.Sort{ /lr RbZ
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/* (non-Javadoc) !Q.c8GRUQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V.y+u7<3}
*/
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public void sort(int[] data) { KNY<"b
int temp; 0p2 0Rt
for(int i=0;i for(int j=data.length-1;j>i;j--){ QMtt:f]?i
if(data[j] SortUtil.swap(data,j,j-1); {)b`fq
} 'Dat.@j
} LWVO%@)w
} wW%I < M
} `W]a
@\EYA
T{uktIO/
} @;rVB
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选择排序: N"r ;d+LTL
_'I9rGlx3
package org.rut.util.algorithm.support; '')G6-c/
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import org.rut.util.algorithm.SortUtil; _Fz)2h,3
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/** ,1~Zqprn
* @author treeroot //J:p,AF
* @since 2006-2-2 ]G1j\ wnF
* @version 1.0 t<`ar@}
*/ HhqqJEp0
public class SelectionSort implements SortUtil.Sort { DVB:8"Bu
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/* $hKgTf?
* (non-Javadoc) \&TTe8
* Lvp/} /H/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ise@,[!
*/ SbGp
public void sort(int[] data) { V>['~|
int temp; 66|lQE&n
for (int i = 0; i < data.length; i++) { M
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int lowIndex = i; ZzKn,+
for (int j = data.length - 1; j > i; j--) { BbU&e z8P
if (data[j] < data[lowIndex]) { ADR`j;2
lowIndex = j; [")0{LSA=
} l w%fY{
} kBONP^xI
SortUtil.swap(data,i,lowIndex); A%GJ|h,i
} ko5\*!|:lj
} 8p5'}Lq
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} ]$L[3qA.
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Shell排序: 5vpf;
ITsJjcYw
package org.rut.util.algorithm.support; 1B1d>V$*
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import org.rut.util.algorithm.SortUtil; yjSN;3t71
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/** ?DRC!
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* @author treeroot ]!A;-m
* @since 2006-2-2 K[ \z'9Q
* @version 1.0 hV,3xrm?P
*/ =?f}h{8x>
public class ShellSort implements SortUtil.Sort{ ,h>w %
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/* (non-Javadoc) cYp}$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z
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*/ V`H#|8\i
public void sort(int[] data) { {$EXI]f
for(int i=data.length/2;i>2;i/=2){ I}q-J~s
for(int j=0;j insertSort(data,j,i); G`
8j ^H,
} r]E$uq
bR
} !e7vc[N
insertSort(data,0,1); )a}5\V
} JJ+<?CeHD
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/** I#Bz
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* @param data g@U#Y#b@"
* @param j (8*lLZ
* @param i `j(+Y
*/ T2->
private void insertSort(int[] data, int start, int inc) { asF-mf;D
int temp; */\.-L{h
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 869`jA&7"
} c !;wp,c
} t/$xzsoJZr
} iY($O/G[+
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} h49Q2`
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快速排序: nY8UJy}<oL
J~}UG]j n
package org.rut.util.algorithm.support; |4c==7.
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import org.rut.util.algorithm.SortUtil; ((5zwD
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/** wiGwN
* @author treeroot MvW>ktkU
* @since 2006-2-2 5^Y/RS i
* @version 1.0 j~8+,:
*/ xC{NIOYn'
public class QuickSort implements SortUtil.Sort{ ~3%3{aa
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/* (non-Javadoc) Z\L@5.*ydE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _qg6(
X
*/ "5YdmBy
public void sort(int[] data) { LBE".+
quickSort(data,0,data.length-1); k|_2aQ02
} 35>}$1?-6
private void quickSort(int[] data,int i,int j){ |.
6@-h~8
int pivotIndex=(i+j)/2; "h2Ny#
file://swap |]q=D1/A
SortUtil.swap(data,pivotIndex,j); s6D-?G*u%8
H94.E|Q\+
int k=partition(data,i-1,j,data[j]); p3S c4
SortUtil.swap(data,k,j); kmoJ`W} N
if((k-i)>1) quickSort(data,i,k-1); Z])_E6.
if((j-k)>1) quickSort(data,k+1,j); 9,W-KM
% n{W
} ZFON]$Zk
/** !lF^~x
* @param data gctaarB&
* @param i Cm4*sN.&)
* @param j A1q^E(}O
* @return P&GZe/6Y
*/
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private int partition(int[] data, int l, int r,int pivot) { x.yL'J\)
do{ 6:,^CI|@t
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2{CSH_"Z7
SortUtil.swap(data,l,r); Ig<p(G.;}
} E8i:ER $$7
while(l SortUtil.swap(data,l,r); =F&RQ}$
return l; [*G2wP[$
} Fjzk;o
mc'p-orAf
} @"!SU'*
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改进后的快速排序: 5avO48;Vc
h7$!wf!I
package org.rut.util.algorithm.support; @9h#o5y q
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import org.rut.util.algorithm.SortUtil; PR?clg=z
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/** f
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* @author treeroot <<6w9wNon
* @since 2006-2-2 G!8pF
* @version 1.0 e{;e
*/ b0X[x{k"
public class ImprovedQuickSort implements SortUtil.Sort { ^0Q*o1W
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private static int MAX_STACK_SIZE=4096; )0mDN.
private static int THRESHOLD=10; JNaW>X$K
/* (non-Javadoc) _w;+Jh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Y>]6
*/ At(9)6n8
public void sort(int[] data) { G 7]wg>*
int[] stack=new int[MAX_STACK_SIZE]; Bx-,"Z \
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int top=-1; r%pFq1/'!
int pivot; k_>{"Rc
int pivotIndex,l,r; !h!9SE
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stack[++top]=0; ef&@aB
stack[++top]=data.length-1; %KF:-
w
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while(top>0){ ap^=CEf
int j=stack[top--]; =-LX)|x}
int i=stack[top--]; >8fH5
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pivotIndex=(i+j)/2; .4> s2
pivot=data[pivotIndex]; /zf>>O`
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SortUtil.swap(data,pivotIndex,j); }G+A_HF ^
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file://partition ,,@`l\Pgd
l=i-1; ATM:As:<@
r=j; ^~qs-.?
do{ %uVJLz
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Lc<xgN+cJ
SortUtil.swap(data,l,r); /dt!J
`:
} 4D$sFR|?t
while(l SortUtil.swap(data,l,r); *\KvcRMGUa
SortUtil.swap(data,l,j); "GI&S% F
Ok~{@\
if((l-i)>THRESHOLD){ 4oV_b"xz~
stack[++top]=i; &hN&nH"PC
stack[++top]=l-1; Tki/d\!+
} $sF#Na4^
if((j-l)>THRESHOLD){ e[mhbFf-
stack[++top]=l+1; j9ta0~x1*6
stack[++top]=j; 4V|z)=)A
} }.UI&UZ-
O6,"#BX
} Hu8atlpo
file://new InsertSort().sort(data); !u4Z0 !Ll
insertSort(data); 5`'=Ko,N
} >B /&V|E
/** jne9=Als5
* @param data IXvz&4VD
*/ |4.o$*0Y
private void insertSort(int[] data) { ASZ5;N4u
int temp; KM}4^Qc
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ef}E.Bl
} 3
9{"T0
} eM=) >zl
} lzs(i2pA
*rcuhw"^b#
} D4Y!,7WEVt
CKt|c!3 7
归并排序: $Cd ;0gdv
nP\V1pgA
package org.rut.util.algorithm.support; (SsH uNt.
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import org.rut.util.algorithm.SortUtil; yC0f/O
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/** h2"|tTm,a
* @author treeroot %C`'>,t>
* @since 2006-2-2 j%Z{.>mJ
* @version 1.0 !N8)C@=
*/ #VdI{IbW
public class MergeSort implements SortUtil.Sort{ M=[q+A
bq3fiT9
/* (non-Javadoc) BQ9`DYI b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ xcZ%,7
public void sort(int[] data) { f'6qJk%J
int[] temp=new int[data.length]; Uk*;C
mergeSort(data,temp,0,data.length-1); iCnUnR{
} _d[2_b1
LlA`QLe
private void mergeSort(int[] data,int[] temp,int l,int r){ rw8J:?0x
int mid=(l+r)/2; nN=:#4
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if(l==r) return ; mE^tzyh
mergeSort(data,temp,l,mid); >!Ap/{2
mergeSort(data,temp,mid+1,r); nK jeH@
for(int i=l;i<=r;i++){ qSoBj&6y
temp=data; ?Tc)f_a
} >[XOMKgQ](
int i1=l; co^P7+j
int i2=mid+1; K rr?`n
for(int cur=l;cur<=r;cur++){ $}^\=p}X
if(i1==mid+1) N=Uc=I7C
data[cur]=temp[i2++]; @ojg`!,
else if(i2>r) h76NR
data[cur]=temp[i1++]; \'??
else if(temp[i1] data[cur]=temp[i1++]; Jn[q<e"
else qBBYckS.
data[cur]=temp[i2++]; I#S~
} n-y^7'v
} iijd$Tv
pcuMGo-#
} yF/< :
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改进后的归并排序: s0)qlm*
p&OJa$N$[
package org.rut.util.algorithm.support; O,=Q1*c,&
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import org.rut.util.algorithm.SortUtil; 9uw,-0*5
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/** lbKv
* @author treeroot Tw`c6^%^y
* @since 2006-2-2 vfJ3idvo*w
* @version 1.0 oDW<e'Jm
*/ I(^jOgYU
public class ImprovedMergeSort implements SortUtil.Sort { T6R7,Vt'v
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private static final int THRESHOLD = 10; })zB".
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/* J-, H6u
* (non-Javadoc) ]Z.<c$
* m]0^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !bZhj3.
*/ piYws<Q
public void sort(int[] data) { Bbl)3$`,
int[] temp=new int[data.length]; O^X[9vrW
mergeSort(data,temp,0,data.length-1); m~Y'$3w
} vZ[$H
:7$\X[
private void mergeSort(int[] data, int[] temp, int l, int r) { ^_*jp[!`b$
int i, j, k; {DEzuU
int mid = (l + r) / 2; ZL-uwI!`D
if (l == r) t<!+b@l5
return; YQ 8j
if ((mid - l) >= THRESHOLD) P\22op_te-
mergeSort(data, temp, l, mid); h/ LR+XX!
else jh 7p62R
insertSort(data, l, mid - l + 1); W(uP`M%][0
if ((r - mid) > THRESHOLD) QJM-`(
mergeSort(data, temp, mid + 1, r); $[M}K
else jiA5oX^g
insertSort(data, mid + 1, r - mid); U`bC>sCp
_W@,@hOH
for (i = l; i <= mid; i++) { fa!3/X+
temp = data; lFp!XZ!
} f
MY;
for (j = 1; j <= r - mid; j++) { -+3be(u
temp[r - j + 1] = data[j + mid]; a%7"_{s1
} 1<LC8?wt
int a = temp[l]; %_B:EMPd
int b = temp[r]; ' "ZRD_"
for (i = l, j = r, k = l; k <= r; k++) { )l+XD I
if (a < b) { #&^ZQs<
data[k] = temp[i++]; H$~M`Y9I~
a = temp; |8&-66pX
} else { !X5o7b )
data[k] = temp[j--]; \LIy:$`8
b = temp[j]; ~In{lQ[QX
} ; g Z%U
} fKL'/?LD]
} )"(V*Z
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/** X'V+^u@W
* @param data <@u0.-]
* @param l N<KKY"?I'
* @param i {PN:bb
*/ \We"?1^
private void insertSort(int[] data, int start, int len) { 98ca[.ui
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Xtci0eS#V
} )^t!|*1LA
} Ms.PO{wb
} R#Y50hzT
} [ 3$.*
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堆排序: \e?.hmq
w) =eMdj\o
package org.rut.util.algorithm.support; f!5F]qP>-
kx|me~I
import org.rut.util.algorithm.SortUtil; -L@]I$Yo
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/** -1Djo:y
* @author treeroot [X;>*-
* @since 2006-2-2 %z(9lAe
* @version 1.0 WwW"fkv
*/ pG0!ALT
public class HeapSort implements SortUtil.Sort{ |if'_x1V
|WB"=PE
/* (non-Javadoc) WI,40&<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CfQf7-
*/ fH-NU-"
public void sort(int[] data) { j h;
9
[
MaxHeap h=new MaxHeap(); iPMB$SdfO
h.init(data); @q,)fBZq
for(int i=0;i h.remove(); Q2*/`L}m\
System.arraycopy(h.queue,1,data,0,data.length); N1PECLS?
} O
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private static class MaxHeap{ q#;BhPc
m'd^?Qc
void init(int[] data){ ;xL67e%?
this.queue=new int[data.length+1]; 1+R:3(AC
for(int i=0;i queue[++size]=data; GA.BI"l
fixUp(size); SV&kWbS
} V?=TVI*k
} aw1P5aPmX
ir]Mn.(Y
private int size=0; \0D$Mie
/^J2B8y
private int[] queue; ?p(kh^ z
rxQ<4
public int get() { ICk(z~D~
return queue[1]; WS5A Y @(~
} -<6v:Z
]K7`-p~T
public void remove() { x7f:F.
SortUtil.swap(queue,1,size--); !;i*\
a
fixDown(1); USprsaj
} FS8S68
file://fixdown 6{Ks`Af
private void fixDown(int k) { +Z > <
int j; +i+tp8T+7
while ((j = k << 1) <= size) { k,T_e6(
if (j < size %26amp;%26amp; queue[j] j++; |H:<:*=6c
if (queue[k]>queue[j]) file://不用交换 s,w YlVYf!
break; 9GThyY
SortUtil.swap(queue,j,k); 8zAg;b[
k = j; 9X3yp:>V
} \4aKLr
} G[#.mD{k
private void fixUp(int k) { Khj=llo,
while (k > 1) { h77IWo6%
int j = k >> 1; 9[kX/#~W*
if (queue[j]>queue[k]) 8\DME
break; w$b~x4y%
SortUtil.swap(queue,j,k); 0F^]A"kF
k = j; }?J~P%HpF
} 82|q7*M*.
} zwnw'
Oo
kxg *!5
} Ss 2$n
Z9xR
} ^1.7Juvb
$:e)$Xnn-
SortUtil: P])L8zK
s{ =5-:
package org.rut.util.algorithm; +lKrj\Xj
^T{8uJ'kn
import org.rut.util.algorithm.support.BubbleSort; ?NlSeh
import org.rut.util.algorithm.support.HeapSort; [7RheXO<
import org.rut.util.algorithm.support.ImprovedMergeSort; b"t")U==
import org.rut.util.algorithm.support.ImprovedQuickSort; \BUqDd!
import org.rut.util.algorithm.support.InsertSort; R>*g\}9Zh3
import org.rut.util.algorithm.support.MergeSort; &
N;pH
import org.rut.util.algorithm.support.QuickSort; E3f9<hm
import org.rut.util.algorithm.support.SelectionSort; Q3,=~}ZNK
import org.rut.util.algorithm.support.ShellSort; -?5$ PH
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/** Jh?z=JY
* @author treeroot n26>>N
* @since 2006-2-2 ;b1wk^,Hw~
* @version 1.0 gH'_ymT=
3
*/ o!utZmk$
public class SortUtil { 6|^0_6_
public final static int INSERT = 1; %9X{{_
public final static int BUBBLE = 2; /$Z
m~Mp
public final static int SELECTION = 3; \6:>{0\
public final static int SHELL = 4; 2 h<U
public final static int QUICK = 5; y@`~ 9$
public final static int IMPROVED_QUICK = 6; b_l3+'#ofM
public final static int MERGE = 7; wLUF v(&C
public final static int IMPROVED_MERGE = 8; U{}!y3[wK
public final static int HEAP = 9; Af9+HI
O
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public static void sort(int[] data) { (f~gEKcB2u
sort(data, IMPROVED_QUICK); uB;_vC
} /[iG5~G
private static String[] name={ 69/?7r
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (zC
}; t:=k)B
H_Os4}
private static Sort[] impl=new Sort[]{ Yx),6C3
new InsertSort(), $/paEn"
new BubbleSort(), _88QgThb
new SelectionSort(), Y\p$SN
new ShellSort(), 8R}K?+]
new QuickSort(), @!<d0_dnC
new ImprovedQuickSort(), V&[eSVY?
new MergeSort(), U(~U!O}
new ImprovedMergeSort(), 4V$fGjJ3
new HeapSort() -`Q}tg>cT
}; AK *N
HIGNRm
public static String toString(int algorithm){ m?;$;x~Dj
return name[algorithm-1]; %2D17*eK
} |l7%l&!
4P%m>[
public static void sort(int[] data, int algorithm) { .*!#98pT
impl[algorithm-1].sort(data); 9afh[3qm
} *,lh:
ax_YKJ5#P
public static interface Sort { \QT9HAdd@
public void sort(int[] data); 8;#AO8+U7)
} 6IP$n($2
!5UfWk\G
public static void swap(int[] data, int i, int j) { X>t3|h
int temp = data; 9P.(^SD][z
data = data[j]; RqLNp?V%
data[j] = temp; 8QF2^*RZ7z
} *QH[,F`I
} M3(k'q7&: