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。 If>bE!_BO
插入排序: *\$m1g7b
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package org.rut.util.algorithm.support; "
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import org.rut.util.algorithm.SortUtil; * :kMv;9
/** EvP\;7B
* @author treeroot 5^5hhm4
* @since 2006-2-2 \rpXG9
* @version 1.0
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*/ =&K8~
public class InsertSort implements SortUtil.Sort{ iNCT( N~.
f>CJ1;][{
/* (non-Javadoc) ;% <[*T:*'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K[q{)>,9
*/ |tr^
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public void sort(int[] data) { ;:PxWm|_
int temp; zG*
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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); N^Hj%5
} jk\z-hd
} 0h-'TJg*sk
} (=-6'23q)
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} "Snt~:W>
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冒泡排序: 0$g;O5y"i
8wEUly
package org.rut.util.algorithm.support; XN&cM,
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import org.rut.util.algorithm.SortUtil; p![UO I"W
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/** X,A]<$ACu%
* @author treeroot ]x(cX&S-9
* @since 2006-2-2 /lS5B6NU
* @version 1.0 }' p"q)
*/ %dwI;%0
public class BubbleSort implements SortUtil.Sort{ hLICu[LC?
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/* (non-Javadoc) <kCOg8<y
:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @P)2ZGG
*/ Di"Tv<RlQ
public void sort(int[] data) { koa-sy )#L
int temp; yz<$?Gblz
for(int i=0;i for(int j=data.length-1;j>i;j--){ =5;tB
if(data[j] SortUtil.swap(data,j,j-1); =E
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} Qv
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} Q?2GwN
} 8-"D.b4
} ]~:WGo=_
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} Kw7uUJR
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选择排序: mUNAA[0 L
XI+GWNAmJ
package org.rut.util.algorithm.support; Y#t9DhzFWo
X #>:9
import org.rut.util.algorithm.SortUtil; C
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/** UOpSH{N
* @author treeroot U4NH9-U'
* @since 2006-2-2 zRMz8IC.
* @version 1.0 r"9hpZH
*/ I {%Y0S
public class SelectionSort implements SortUtil.Sort { R > [2*o"
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/* Jsa]RA
* (non-Javadoc) ,4j^lgJ
* E?0Vo%Vh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f hjlt#
*/ M`&78j
public void sort(int[] data) { x=03WQ8
int temp; t3b M4+n
for (int i = 0; i < data.length; i++) { t52KF#+>
int lowIndex = i; ^4Uk'T7V
for (int j = data.length - 1; j > i; j--) { jcp6-XM
if (data[j] < data[lowIndex]) { 25j?0P"&
lowIndex = j; d%K&
} VXnWY8\
} !CdF,pd/)m
SortUtil.swap(data,i,lowIndex); NY6;\ 7!n
} T/PmT:Qg`
} |'``pq/}_
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} !>#gm7
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Shell排序: ..R JHa6B
q`3HHq
package org.rut.util.algorithm.support; eH V#Mey[
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import org.rut.util.algorithm.SortUtil; ?_B'#,tI
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/** dT{GB!jz
* @author treeroot 1k]L ,CX
* @since 2006-2-2 ~d3|zlh
* @version 1.0 cw,|,uXq
6
*/ vq+4so
)/S
public class ShellSort implements SortUtil.Sort{ 2Ab`i!#
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/* (non-Javadoc) r>}z|I'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5,pEJ>dDD3
*/ pD!j#suMA
public void sort(int[] data) { <=Saf.
for(int i=data.length/2;i>2;i/=2){ 'jXJ!GFw
for(int j=0;j insertSort(data,j,i); f_Hh"Vh
} `An p;el
} !+z&] S3s
insertSort(data,0,1); D~FIv
} Y>T<Qn^D
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/** J/QqwoR
* @param data 2tg 07
* @param j QnJLTBv
* @param i d)3jkHYEjj
*/ !ALq?u
private void insertSort(int[] data, int start, int inc) { O6,2M[a
int temp; _kc}:
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &7,::$cu
} [Op^l%BC
} KF1Zy;
} }lXor~_i
Vry*=X&Q
} 2r!- zEV
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快速排序: hE
E1i
Z^BZH/I?
package org.rut.util.algorithm.support; PC\p>6xT
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import org.rut.util.algorithm.SortUtil; }(!rB#bf
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/** >X*G6p
* @author treeroot 505ejO|
* @since 2006-2-2 Yhz Dw8f
* @version 1.0 iUFG!,+d
*/ d+vAm3.Dg
public class QuickSort implements SortUtil.Sort{ xSm~V3bc
&JYkh >
/* (non-Javadoc) N{}8Zh4op
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (J?_~(,`"
*/ U%0|LQk5
public void sort(int[] data) { F2MC)
quickSort(data,0,data.length-1); 4\ |/S@.
} z7z9lDS
private void quickSort(int[] data,int i,int j){ ,@fx[5{
int pivotIndex=(i+j)/2; }
,^p{J/
file://swap t>OEzUd9
SortUtil.swap(data,pivotIndex,j); vL;>A]oM2
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int k=partition(data,i-1,j,data[j]); 0>46ZzxUZ
SortUtil.swap(data,k,j); `e`DSl D>
if((k-i)>1) quickSort(data,i,k-1); , hrv
if((j-k)>1) quickSort(data,k+1,j); "Ec9.#U/
aI=Q_}8-
} NcHU)
/** A^$xE6t
* @param data K2\)9
* @param i ^(Z%,j3O
* @param j vRn]u57O
* @return M]M>z>1*v
*/ y\4/M6
private int partition(int[] data, int l, int r,int pivot) { 7SN61)[m
do{ :P
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \3]O?'
SortUtil.swap(data,l,r); $BT[fJ'k
} GIT"J}b}
while(l SortUtil.swap(data,l,r); HO_(it \
return l; ?Q$a@)x#
} Q/]o'_[vW
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} @4Zkkjc4b
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改进后的快速排序: R^=v&c{@
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package org.rut.util.algorithm.support; hrO9_B|#
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import org.rut.util.algorithm.SortUtil; {;th~[
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/** ir>S\VT4
* @author treeroot \rATmjsKzS
* @since 2006-2-2 "'GhE+>Z
* @version 1.0 G;J)[y
*/ rC]k'p2x
public class ImprovedQuickSort implements SortUtil.Sort { QhLgFu
,t;US.s([.
private static int MAX_STACK_SIZE=4096; DajN1}]
private static int THRESHOLD=10; C@[U:\
/* (non-Javadoc) n(|n=P:o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZR-64G=L,
*/ UCkV;//.
public void sort(int[] data) { \{!,a
int[] stack=new int[MAX_STACK_SIZE]; KK5_;<
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int top=-1; ,%BDBZ
int pivot; ]T&d_~l
int pivotIndex,l,r; R/Z7}Q W
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stack[++top]=0; Ml;` *;
stack[++top]=data.length-1; (2QfH$HEk
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while(top>0){ w (z=xO
int j=stack[top--]; (+cZP&o
int i=stack[top--]; NZ0 ?0*
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pivotIndex=(i+j)/2; 6`G8 UDK>F
pivot=data[pivotIndex]; XN>bv|*q
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SortUtil.swap(data,pivotIndex,j); %3|/t-US
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file://partition LXsZk|IhM
l=i-1; AaoS &q
r=j; NQ;$V:s)
do{ r{84Y!k~*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q_ryW$/_
SortUtil.swap(data,l,r);
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} U 8p %MFD
while(l SortUtil.swap(data,l,r); lN8l71N^
SortUtil.swap(data,l,j); O:a=94
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if((l-i)>THRESHOLD){ $+ N~Fa
stack[++top]=i; C@Go]*c
stack[++top]=l-1; I} 5e{jBB
} ]NI
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if((j-l)>THRESHOLD){ <5
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stack[++top]=l+1; : vx<m_
stack[++top]=j; Q$ Dx:
} E/wxX#]\
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} XJKns
file://new InsertSort().sort(data); NI.ROk1{+4
insertSort(data); JZ*.;}"
} ;UUgqX#
/** $$W2{vr7+
* @param data r>i95u82'
*/ 4zt:3bWU
private void insertSort(int[] data) { 9Li&0E
int temp; ;+|Z5+7!6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); GA/afc,V
}
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} oyY
z3X
} INp:;
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} 5*-RIs! 2
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归并排序: 4[JF.O6}
Ycq )$7p
package org.rut.util.algorithm.support; zxIP-QaA
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import org.rut.util.algorithm.SortUtil; U6*[}Ww
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/** *]h"J]
* @author treeroot 2<p@G#(
* @since 2006-2-2 5M~nNm[xJU
* @version 1.0 vu91"
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*/ [hpkE lE
public class MergeSort implements SortUtil.Sort{ u0,QsD)_X0
)ZBNw{nh
/* (non-Javadoc) g6P^ JW}.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {^(uoB C/
*/ j (Q#NFT7
public void sort(int[] data) { OI"g-+~
int[] temp=new int[data.length]; ~m,~;
mergeSort(data,temp,0,data.length-1); h(~/JW[
} )"hd"
QRrAyRf[
private void mergeSort(int[] data,int[] temp,int l,int r){ %8%|6^,
int mid=(l+r)/2; %#~wFW|]x
if(l==r) return ; CDXN%~0h
mergeSort(data,temp,l,mid); T0"nzukd
mergeSort(data,temp,mid+1,r); >3B{sn}
for(int i=l;i<=r;i++){ L-rV+?i`6f
temp=data; izGU&VeB
} }$L1A
int i1=l; Q_!tn*
int i2=mid+1; 2#3`[+g<n
for(int cur=l;cur<=r;cur++){ <H-kR\HF
if(i1==mid+1) MMC$c=4"
data[cur]=temp[i2++]; QA;,/iw `
else if(i2>r) S5, u| H
data[cur]=temp[i1++]; ebNRZJ?C,
else if(temp[i1] data[cur]=temp[i1++]; m[Ihte->
else 0*tnJB
data[cur]=temp[i2++]; MN5}}@
} k\;D;e{
} wbcip8<t
n'{jc6&|
} x=L"qC9f/
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改进后的归并排序: F?]J`F\I
XOQ0(e6
package org.rut.util.algorithm.support; p{W
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import org.rut.util.algorithm.SortUtil; =T26vu
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/** <ta{)}IN^
* @author treeroot QRKP;aYt
* @since 2006-2-2 <T)0I1S
* @version 1.0 .|g@#XIwe#
*/ R@NFpiw
public class ImprovedMergeSort implements SortUtil.Sort { C9MK3vtD.
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private static final int THRESHOLD = 10; 7 kA+F+f
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/* J%xUO1
* (non-Javadoc) WbhYGcRy
* zA+0jhuG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4gev^/^^
*/ pM+9K:^B
public void sort(int[] data) { yih|6sd$F
int[] temp=new int[data.length]; /F"eqMN
mergeSort(data,temp,0,data.length-1); :=+YZ|&j
} e&:%Rr]x
`uk=2k}&m
private void mergeSort(int[] data, int[] temp, int l, int r) { lg2I|Z6DH
int i, j, k; 2ib,33 Z
int mid = (l + r) / 2; A&B|n!;b
if (l == r) "fhQ{b$i
return; AY<L8
if ((mid - l) >= THRESHOLD) IgwHC0W
mergeSort(data, temp, l, mid); edcz%IOM(
else ?f3R+4
insertSort(data, l, mid - l + 1); B=%%3V)2
if ((r - mid) > THRESHOLD) C{nk,j
L
mergeSort(data, temp, mid + 1, r); Akc
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else oHv.EO
insertSort(data, mid + 1, r - mid); :eD-'#@$u
/4+Q;
P
for (i = l; i <= mid; i++) { f_LXp$n
temp = data; n/*" 2
} qa@;S,lp
for (j = 1; j <= r - mid; j++) { SDS P4W5
temp[r - j + 1] = data[j + mid]; tq~f9EvC
} GhcH"D%-
int a = temp[l]; PZ'|)
int b = temp[r]; TJW8 l[M
for (i = l, j = r, k = l; k <= r; k++) { M;3q.0MU
if (a < b) { _yH">x<
data[k] = temp[i++]; 3kUb cm
a = temp; 'WmjQsf
} else { NKB["+S<
data[k] = temp[j--]; !ii(2U
b = temp[j]; \}k R'l
} gpzFY"MS=
} .mqMzV
} NX(+%EBcA
%x@bP6d[
/** Eul3 {+]
* @param data s 72yu}
* @param l &FOq c
* @param i /y4A?*w 6
*/ "SQyy
private void insertSort(int[] data, int start, int len) { NJd4( P
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3*j1v:x`
} CH!\uK22
} nm%qm
} m1]/8{EC7
} o%z^@Cq
G.@K#a9
堆排序: -6s]7#IC
qRcg|']R
package org.rut.util.algorithm.support; =MM+(mD
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import org.rut.util.algorithm.SortUtil; 5eFtcK
sh` 3$ {
/** |Thm5,ao
* @author treeroot . uGne
* @since 2006-2-2 ,\3Cq2h
* @version 1.0 Z[Iej:o5
*/ HfP<hQmN'
public class HeapSort implements SortUtil.Sort{ [)8O\/:
5?Q5cD2]\6
/* (non-Javadoc) UA6
C/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9fTl6?x
*/ be_h
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public void sort(int[] data) { e?07o!7[;
MaxHeap h=new MaxHeap(); =^*EM<WG)
h.init(data); b">"NvlB
for(int i=0;i h.remove(); -AVT+RE9z
System.arraycopy(h.queue,1,data,0,data.length); )>Z@')Uk:
} Mg8ciV}\xY
~p{YuW[e
private static class MaxHeap{ ]{{%d4
.}+3A~
void init(int[] data){ n[y^S3}%;
this.queue=new int[data.length+1]; S{]3e-?
for(int i=0;i queue[++size]=data; =x(k)RTDu
fixUp(size); ^c.pvC"4j
} rP"Y.;s
} y/_=
}7{(o-
private int size=0; ##F$8d)q
mAIl)mq|g
private int[] queue; 2Z<S^9O9
6MU;9|&
public int get() { i88`W&tI{
return queue[1]; A>S7Ap4z>
} 7oUo [
Rw[!Jq
public void remove() { 8(q8}s$>
SortUtil.swap(queue,1,size--); 48J{Y3F
fixDown(1); Zg4wd/y?
} 4z~;4
file://fixdown "la0@/n
private void fixDown(int k) { :*|So5fs
int j; &pz`gna
while ((j = k << 1) <= size) { myOW^
if (j < size %26amp;%26amp; queue[j] j++; ^Df qc-]
if (queue[k]>queue[j]) file://不用交换 K~^o06 Y
break; egfd=z=2un
SortUtil.swap(queue,j,k); 4PU@W o
k = j; D0S^Msk9L
} ~WV1t][
} ,1<6=vL
private void fixUp(int k) { OzRo
while (k > 1) { w+!V,lU"^
int j = k >> 1; :l
Z\=2D
if (queue[j]>queue[k]) 8/,s8u
break; }
MP_
SortUtil.swap(queue,j,k); U%VFr#
k = j; hmb=_W
} ?,hGKSC
} z
[u!C/
N5cC!K
} z?`7g%Z?{
-(%Xq{
} >oEFuwE
l#>A.-R*`
SortUtil: Sw[*1C8
+Bt%W%_X
package org.rut.util.algorithm; Sv>CVp*
PIQd=%?'
import org.rut.util.algorithm.support.BubbleSort; ~e){2_J&n
import org.rut.util.algorithm.support.HeapSort; yC|odX#
import org.rut.util.algorithm.support.ImprovedMergeSort; w`#9Re
import org.rut.util.algorithm.support.ImprovedQuickSort; UA0(
cK
import org.rut.util.algorithm.support.InsertSort; 7s:cg
import org.rut.util.algorithm.support.MergeSort; 2AxKB+c1`
import org.rut.util.algorithm.support.QuickSort; a~-k} G5
import org.rut.util.algorithm.support.SelectionSort; %^"i\-*|S
import org.rut.util.algorithm.support.ShellSort; ?&U~X)Q
@fVz
*
/** K3rsew
n
* @author treeroot 6BXZGE
* @since 2006-2-2 pm= s
* @version 1.0 UK@hnQU8`
*/ EW]8k@&g
public class SortUtil { 6Ol)SQE,
public final static int INSERT = 1; !@+4&B=
public final static int BUBBLE = 2; ~_-+Q=3
public final static int SELECTION = 3; {K/xI
public final static int SHELL = 4; ;'<SsI
public final static int QUICK = 5; t`V U<
public final static int IMPROVED_QUICK = 6; EzCi%>q
public final static int MERGE = 7; sN1I+X
public final static int IMPROVED_MERGE = 8; 6-{wo)p
public final static int HEAP = 9; {;JFoe+
*tDxwD7
public static void sort(int[] data) { 8D^ iQBA
sort(data, IMPROVED_QUICK); |hu9)0P
} F22]4DLHO
private static String[] name={ H}1XK|K3#H
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {qH+S/
}; k)9
pkPl
T^X um2Ec
private static Sort[] impl=new Sort[]{ o1&Oug
new InsertSort(), c&SSf_0O*
new BubbleSort(), %IUTi6P
l
new SelectionSort(), 6WLq>Jo
new ShellSort(), 7Uh/Gl
new QuickSort(), 86Xf6Ea
new ImprovedQuickSort(),
T(+*y
new MergeSort(), f2Tz5slE
new ImprovedMergeSort(), I[LHJ4
new HeapSort() TP=#U^g*
}; Hegj_FQ
!T]bz+
public static String toString(int algorithm){ ~llw_w
return name[algorithm-1]; ;|Rrtf9
} )OQih+#?W
$*+UX
public static void sort(int[] data, int algorithm) { 6bbzgULl
impl[algorithm-1].sort(data); emS7q|^
} >~G _'~_f
%i.;~>
public static interface Sort { \e?w8R.6w^
public void sort(int[] data); G`u";w_
} QWwEfL
m&6)Vt
public static void swap(int[] data, int i, int j) { P;p20+
int temp = data; U {sT %G
data = data[j]; r5!Sps3B
data[j] = temp; w"E.Va
} ?)/&tk9.n
} \ 3l3,VYH