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。 AFwdJte9e
插入排序: ;
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package org.rut.util.algorithm.support; z+X}HL
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import org.rut.util.algorithm.SortUtil; '!B&:X)
/** 5\VWC I
* @author treeroot c@L< Z` u
* @since 2006-2-2 ~((O8@}J
* @version 1.0 F*ylnB3z
*/ DkDmE
public class InsertSort implements SortUtil.Sort{ l+0oS'`V*L
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/* (non-Javadoc) 8zW2zkv2|#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =41?^1\
*/ <lJ345Q
public void sort(int[] data) { l9Q-iJ
int temp; ~})e?q;b
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (X*^dO
} 1T
n}
} ?(_08O
} QQc -Ya!v
1EX;MW-p<T
} E}Uc7G
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冒泡排序: >uEzw4w
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package org.rut.util.algorithm.support; ="l/ klYV
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import org.rut.util.algorithm.SortUtil; )Hr`MB
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/** 2=!RQv~%
* @author treeroot B/Ws_Kv
* @since 2006-2-2 dft!lBN
* @version 1.0 !&@615Vtw
*/ 4 s9LB
public class BubbleSort implements SortUtil.Sort{ t\O16O7S
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/* (non-Javadoc) l,aay-E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,64-1!
*/ -M#Wt`6A
public void sort(int[] data) { ZXPX,~ 5o
int temp; p0eX{xm
for(int i=0;i for(int j=data.length-1;j>i;j--){ JC}D`h
if(data[j] SortUtil.swap(data,j,j-1); }"%N4(Kd
} * kh tJ]=
} |CbikE}kL
} @BMx!r5kn
} goWuw}?
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} V>rU.Mp
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选择排序: E2+`4g@{8<
X2'0PXv>!
package org.rut.util.algorithm.support; YtLt*Ig%
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import org.rut.util.algorithm.SortUtil; Y8t8!{ytg
?:9"X$XR
/** 1X1dG#:
* @author treeroot $<[79al#
* @since 2006-2-2 3Tm+g2w2V8
* @version 1.0 <(! :$
*/ 'dc#F3
public class SelectionSort implements SortUtil.Sort { |;{6&S
7_[L o4_
/* >=w)x,0yX
* (non-Javadoc) 3o/[t
* :[d9tm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b|(:[nB
*/ L-&\\{X
public void sort(int[] data) { GTxk%
int temp; <%mRSv
for (int i = 0; i < data.length; i++) { :b!s2n!u
int lowIndex = i; X"*5+* z]
for (int j = data.length - 1; j > i; j--) { akTk(
if (data[j] < data[lowIndex]) { Gav$HLx
lowIndex = j; ;5AcFB
} IdN41
} 3PF_H$`oJ
SortUtil.swap(data,i,lowIndex); (**oRwr%
} ]eV8b*d6
} K:WDl;8(d
62NsJ<#>
} PQE=D0
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Shell排序: 2B`JGFcdcB
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package org.rut.util.algorithm.support; f%8C!W]Dm
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import org.rut.util.algorithm.SortUtil; z{r}~{{E
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/** ~F#j#n(=`q
* @author treeroot 1xx}~|F?|
* @since 2006-2-2 !p/goqT~dY
* @version 1.0 lNv|M)I
*/ ?&uu[y
public class ShellSort implements SortUtil.Sort{ /zox$p$?h
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/* (non-Javadoc) wdoR%b{M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dgP3@`YS
*/ #p{4^
public void sort(int[] data) { c[s4EUG
for(int i=data.length/2;i>2;i/=2){ wKY_Bo/d
for(int j=0;j insertSort(data,j,i); $Ygue5{c
} A?0Nm{O;3v
} JsS-n'gF'
insertSort(data,0,1); ^kSqsT"
} CNx8]
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/** [PbOfxxgA
* @param data c4z R*
* @param j 3r1*m
+
* @param i Y\hBd$lQ~
*/ YHl;flv
private void insertSort(int[] data, int start, int inc) { o,wUc"CE
int temp; ;9'OOz|+1
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); oD@7
SF
} /<BI46B\
} *n"{J(Jt`
} d0 /#nz
ll?X@S
} m)D|l1AtF
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快速排序: t3^&;&[
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package org.rut.util.algorithm.support; 3= ;<$+I6
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import org.rut.util.algorithm.SortUtil; >KKMcTOYY
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/** (uidNq
* @author treeroot )=-szJjXZ
* @since 2006-2-2 q" 5(H5
* @version 1.0 #)VF3T@#'
*/ a-J.B.A$Z/
public class QuickSort implements SortUtil.Sort{ Yz93'HDB
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/* (non-Javadoc) d<x7{?~.DK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AT|3:]3E
*/ v(%*b,^
public void sort(int[] data) { -H-~;EzU
quickSort(data,0,data.length-1); II=79$n`G
} Uoix
private void quickSort(int[] data,int i,int j){ 2 8u_!f[
int pivotIndex=(i+j)/2; h
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file://swap Ssg&QI
SortUtil.swap(data,pivotIndex,j); YZJyk:H\
9-m=*|p
int k=partition(data,i-1,j,data[j]); GsM<2@?
SortUtil.swap(data,k,j); 0C,`h`
if((k-i)>1) quickSort(data,i,k-1); ,MIV=*
if((j-k)>1) quickSort(data,k+1,j); 7 Fsay+a
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} ]
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/** |(^PS8wG
* @param data f6"Z'{j
* @param i ZSm3 XXk
* @param j IO:G1;[/2L
* @return Y\'}a+:@Ph
*/ +x}<IS8
private int partition(int[] data, int l, int r,int pivot) { ?|Zx!z ($
do{ X#;bh78&-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ilm^G}GB
SortUtil.swap(data,l,r); Rbv;?'O$L
} ;YL i{
while(l SortUtil.swap(data,l,r); Z;)%%V%o
return l; %vi83%$'4
} BING{ew
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} zT-_5uZQ
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改进后的快速排序: K!l5coM
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package org.rut.util.algorithm.support; BTrn0
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import org.rut.util.algorithm.SortUtil; 8DaL,bi*.
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/** o2\8OxcA
* @author treeroot 8, >P
* @since 2006-2-2 d m%8K6|
* @version 1.0 ;i:d+!3XwC
*/ QkC(uS
public class ImprovedQuickSort implements SortUtil.Sort { q'MZ R'<@
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private static int MAX_STACK_SIZE=4096; IIx#2r
private static int THRESHOLD=10; uY'HT|@:{
/* (non-Javadoc) ^K@C"j?M/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ` sU/& P
*/ ,$&&-p I]
public void sort(int[] data) { @Do= k
int[] stack=new int[MAX_STACK_SIZE]; ;sFF+^~L
[j'X;tVX{
int top=-1; c~
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int pivot; ,s;UfF
int pivotIndex,l,r; .#pU=v#/[
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stack[++top]=0; t\ewHZG"
stack[++top]=data.length-1; VY\&8n}e(
SasJic2M
while(top>0){ )53y
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int j=stack[top--]; du^J2m{f
int i=stack[top--]; 65^9
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pivotIndex=(i+j)/2; 0{ R=9wcc
pivot=data[pivotIndex]; o{[YA}xc
IPo?:1x]s
SortUtil.swap(data,pivotIndex,j); "snw4if
Y:a]00&)#Y
file://partition f&
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l=i-1; N] sAji*
r=j; ?FcAXA/J{
do{ cExS7~*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *;*r8[U}q
SortUtil.swap(data,l,r); PwLZkr@4^
} |Xy6PN8
while(l SortUtil.swap(data,l,r); Z?QC!bWb
SortUtil.swap(data,l,j); ekCC5P!
J7p),[>I<
if((l-i)>THRESHOLD){ +srGN5!
stack[++top]=i; v_-dx
stack[++top]=l-1; sLQ^F
} [ibu/W$
if((j-l)>THRESHOLD){ vRO
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stack[++top]=l+1; wAW5
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stack[++top]=j; ?5
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} %bfQ$a:
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} C~iL3Cb
file://new InsertSort().sort(data); z' >_Mc6
insertSort(data); n7-6-
#
} E~oOKQ5W
/** Y0-n\|
* @param data @I!0-OjL
*/ LSr]S79N1
private void insertSort(int[] data) { s-T\r"d=j
int temp; 0:Ol7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )P|),S,;Z
} omBoo5e
} <W $mj04@
} ~IN>3\j
^.NU|NQi'
} N//KPh
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归并排序:
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`w
YcpoL@ab
package org.rut.util.algorithm.support; ;;N9>M?b
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import org.rut.util.algorithm.SortUtil; W9GVt$T7
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/** ;MdlwQ$`
* @author treeroot :G%61x&=Zc
* @since 2006-2-2 wDe& 1(T^
* @version 1.0 z ~/` 1
*/ q5)O%l !
public class MergeSort implements SortUtil.Sort{ ut7zVp<"
[K0(RDV)%
/* (non-Javadoc) kL"2=7m;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V[Ui/M!9Z
*/ ,1o FPa{?
public void sort(int[] data) { j+
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int[] temp=new int[data.length]; )|=j`jCC
mergeSort(data,temp,0,data.length-1); Fy-t T]Q9
} +!.^zp21
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private void mergeSort(int[] data,int[] temp,int l,int r){ 8c^TT&
int mid=(l+r)/2; eV?2LtT#5
if(l==r) return ; <B6H. P =
mergeSort(data,temp,l,mid); Gu\q%'I
mergeSort(data,temp,mid+1,r); 9m~p0 ILh
for(int i=l;i<=r;i++){ *wB1,U{
temp=data; 5taT5?n2
} {[?(9u7R
int i1=l; 1NA.nw.
int i2=mid+1; ^ sLdAC
for(int cur=l;cur<=r;cur++){ 3m!X/u
if(i1==mid+1) VQ9/Gxdeo
data[cur]=temp[i2++]; vuY~_
else if(i2>r) PBTnIU
data[cur]=temp[i1++]; ~%kkeh\j
else if(temp[i1] data[cur]=temp[i1++]; P:MT*ra*,
else [%1CRk
data[cur]=temp[i2++]; 57']#j#"hj
} >jc [nk
} ]K,Tnyp
0{}8(
} 6fEqqUeV
pYmk1!]/
改进后的归并排序: dE{dZ#Jfi
K:#I
package org.rut.util.algorithm.support; a'yK~;+_9
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import org.rut.util.algorithm.SortUtil; )W
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68C%B9.b'
/** |"CZ T#
* @author treeroot nazZ*lC
* @since 2006-2-2 ,uhb~N<
* @version 1.0 |~mOfuQb
*/ ra
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public class ImprovedMergeSort implements SortUtil.Sort { EDl!w:
9gK`E
private static final int THRESHOLD = 10; C7ScS"~
84zSK)=Y
/* @>2i+)=E5
* (non-Javadoc) o~y;j75{.*
* c2 C8g1n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C{xaENp
*/ uGK.\PB$
public void sort(int[] data) { =|y9UlsD
int[] temp=new int[data.length]; j[J-f@F \Y
mergeSort(data,temp,0,data.length-1); E,x+JeKV
} 0gP}zM73
'/p/8V.O.
private void mergeSort(int[] data, int[] temp, int l, int r) { TpwkD_fg
int i, j, k; .2Elr(&*h
int mid = (l + r) / 2; yEoF4bt
if (l == r) Ad9}9!<
return; ZI}F om<
if ((mid - l) >= THRESHOLD) Q1I6$8:7
mergeSort(data, temp, l, mid); W/bQd)Jvk
else Ee%%d
insertSort(data, l, mid - l + 1); `MN4uC
if ((r - mid) > THRESHOLD) ,77d(bR<
mergeSort(data, temp, mid + 1, r); CXx*_@}MU
else A>;bHf@
insertSort(data, mid + 1, r - mid); (Y? gn)*t
[
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for (i = l; i <= mid; i++) { ep)n_!$OH"
temp = data; `V)8
QRN(
} N gGp
for (j = 1; j <= r - mid; j++) { Y>dzR)~3[
temp[r - j + 1] = data[j + mid]; DGn;m\B
} ;~ $'2f~U
int a = temp[l]; XZ]uUP
int b = temp[r]; _P 3G
for (i = l, j = r, k = l; k <= r; k++) { rCbDu&k]
if (a < b) { SaAFz&WRl
data[k] = temp[i++]; Q}K"24`=
a = temp; b;W3j
} else { &4x}ppX
data[k] = temp[j--]; oC: {aK6\
b = temp[j]; G+"t/?/
} li'YDtMKCY
} JWhdMU
} :tB1D@Cb6
c&?m>2^6
/** /}fHt^2H
* @param data {{D)YldtA
* @param l :vqgGKml$
* @param i bL+_j}{:N
*/ RSyUaA
private void insertSort(int[] data, int start, int len) { D4lG[qb
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0oZ=
yh
} (pCrmyB
}
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} SpLzm A
} 5z8d}
I
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堆排序: fo#fg8zX%
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package org.rut.util.algorithm.support; {JO
$=8
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import org.rut.util.algorithm.SortUtil; j@U]'5EVB
FaQe_;
/** b_#m}yZ6
* @author treeroot vrhT<+q
* @since 2006-2-2 JPc+rfF
* @version 1.0 $%CF8\0
*/ +\c5]`
public class HeapSort implements SortUtil.Sort{ ^T;*M_
:bu/^mW[
/* (non-Javadoc) V6&!9b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yz/md1T$
*/ jrlVvzZ
public void sort(int[] data) { ~ Ei $nV
MaxHeap h=new MaxHeap(); ,]ma+(|
h.init(data); tqvN0vY5
for(int i=0;i h.remove(); D9CaFu
System.arraycopy(h.queue,1,data,0,data.length); J6s`'gFns
} dGYn4i2k?
Ustv{:7v
private static class MaxHeap{ EyD=q! ZVZ
*8yAG]z
void init(int[] data){ "3)C'WlEy/
this.queue=new int[data.length+1]; hl7bzKO*w
for(int i=0;i queue[++size]=data; Qcq`libK
fixUp(size); ?Wr+Q
} b9KP( _
} M=.n7RY-
.779pT!,M
private int size=0; ?cBwPetp
o/$}
private int[] queue; szZr4y<8|1
@; zl
public int get() { w;[NH/A^a
return queue[1]; fNli
} 6y%qVx#!
L3u&/Tn2
public void remove() { ^pAAzr"hv
SortUtil.swap(queue,1,size--); N
,'GN[s
fixDown(1); B4c]}r+
} n/;WxnnQ
file://fixdown rxgbV.tx
private void fixDown(int k) { =r?hgGWe
int j; |C;=-|
while ((j = k << 1) <= size) { Z58X5"
if (j < size %26amp;%26amp; queue[j] j++; (Ft+uuG
if (queue[k]>queue[j]) file://不用交换 jiV<+T?
break; ^EtMxF@D
SortUtil.swap(queue,j,k); k2omJ$?v
k = j; ITE{@1
} Xk~D$~4<
} Gv!2f
private void fixUp(int k) { 6"LcJ%o
while (k > 1) { U2tV4_ e
int j = k >> 1; &Cq`Y !y
if (queue[j]>queue[k]) 75cW_t,g
break; {NmWQyEv
SortUtil.swap(queue,j,k); T6y\|
k = j; '%s.^kn
}
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} [i21FX
9N#_(uwt
} a+[KI
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} ~WeM TXF>y
>Eyt17_H"n
SortUtil: $u$!tj
e8>})
package org.rut.util.algorithm; qTRsZz@
,8S/t+H
import org.rut.util.algorithm.support.BubbleSort; .KB^3pOpx
import org.rut.util.algorithm.support.HeapSort; 2@n{yYwy
import org.rut.util.algorithm.support.ImprovedMergeSort; [`#CXq'
import org.rut.util.algorithm.support.ImprovedQuickSort; @wGPqg
import org.rut.util.algorithm.support.InsertSort; SB;&GHq"n
import org.rut.util.algorithm.support.MergeSort; .9/hHCp
import org.rut.util.algorithm.support.QuickSort; 2RVN\?s:
import org.rut.util.algorithm.support.SelectionSort; 7X`g,b!
import org.rut.util.algorithm.support.ShellSort; m4[ ;(1
BA @lk+aW
/** a5dLQxb
* @author treeroot -P(efYk
* @since 2006-2-2 +xh`Q=A
* @version 1.0 aq>kTaz
*/ a=|K%ii+Y
public class SortUtil { j2t7'bO_
public final static int INSERT = 1; )nC]5MXU
public final static int BUBBLE = 2; EKYY6S2
public final static int SELECTION = 3; .Yamc#A-
public final static int SHELL = 4; m<<+
public final static int QUICK = 5; a{ L%7
public final static int IMPROVED_QUICK = 6; fbyd"(V8r
public final static int MERGE = 7; a(m2n.0'>
public final static int IMPROVED_MERGE = 8; e[{0)y>=
public final static int HEAP = 9; fF!Yp iI"
E+j/Cu
public static void sort(int[] data) { !4ocZmj\
sort(data, IMPROVED_QUICK); KaLzg5is
} 6B8VfQ9[
private static String[] name={ YU'k#\gi*
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" aG-vtld
}; w49t9~
gT6z9
private static Sort[] impl=new Sort[]{ 7m47rJyW4
new InsertSort(), bt@<
ut\
new BubbleSort(), $H2u.U<ip
new SelectionSort(), DHg:8%3x
new ShellSort(), \,'m</o~,
new QuickSort(), Oz75V|D
new ImprovedQuickSort(), 7zl5yKN
new MergeSort(), PF0_8,@U
new ImprovedMergeSort(), 'NbHa!
new HeapSort() G~]Uk*M
q
}; k`cfG\;r
^L,K& Jd
public static String toString(int algorithm){ ^7`BP%6
return name[algorithm-1]; [>vLf2OID
} v1#otrf
(fhb0i-
public static void sort(int[] data, int algorithm) { P7ao5NP
impl[algorithm-1].sort(data); :^<3>zk
} [DYQ"A=)d
=?5]()'*n
public static interface Sort { FBG4pb9=~
public void sort(int[] data); `C,n0'PL.
} HRpte=`q
$o!zUH~'v
public static void swap(int[] data, int i, int j) { Q*GN`07@?d
int temp = data; mwO6g~@`
data = data[j]; ^23~ZHu
data[j] = temp; m%0p\Y-/
} 9v#CE!
} k<z)WNBf