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。 mx y>
插入排序: Py3Xvudv
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package org.rut.util.algorithm.support; *tC]Z&5
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import org.rut.util.algorithm.SortUtil; >jD,%yG
/** |W];8
* @author treeroot n[H3b}
* @since 2006-2-2 hiZE8?0+~N
* @version 1.0 . T6fPEb
*/ q$ (@
public class InsertSort implements SortUtil.Sort{ L1
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/* (non-Javadoc) N:[22`NP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T0J"Wr>WY
*/ M.iR5Uh
public void sort(int[] data) { i Tg?JoE2
int temp; VHGOVH,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Hr |De8#f
} k>I[U}h
} 9=p^E# d
} })rJU/
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} [4KW64%l
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冒泡排序: $@<qaR{t \
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package org.rut.util.algorithm.support; B#9rqC
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import org.rut.util.algorithm.SortUtil; -]\cUQ0
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/** ^|M\vO
* @author treeroot TO7%TW{L
* @since 2006-2-2 !*_5 B'
* @version 1.0 v<c~
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*/ Bt[OGa(q
public class BubbleSort implements SortUtil.Sort{ &(UVS0=Dp,
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/* (non-Javadoc) |-GmW SK_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;O5p>o
*/ 6Y<'Lyg/
public void sort(int[] data) { _R-[*ucq
int temp; L5=Tj4`
for(int i=0;i for(int j=data.length-1;j>i;j--){ {KYbsD
if(data[j] SortUtil.swap(data,j,j-1); m`l3@Z
} ]@)T]
} /*\pm!]._^
} , v,mBYaU
} <8nl}^d5
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} %y;E1pva
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选择排序: Ta^l1]9.*
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package org.rut.util.algorithm.support; N%
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import org.rut.util.algorithm.SortUtil; `oQ)qa_
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/** }GX[N\$N
* @author treeroot $Ay
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* @since 2006-2-2 \lwYDPY:
* @version 1.0 x-O9|%aRJ
*/ :a3 +f5
public class SelectionSort implements SortUtil.Sort { `\LhEnIwu
<;}jf*A
/* wN1%;~?7
* (non-Javadoc) gRA}sF
* 72@lDY4cE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c#X9d8>
*/ +rse,b&U(
public void sort(int[] data) { _X5@%/Vz
int temp; 9fp@d
for (int i = 0; i < data.length; i++) { 2]W"sT[
int lowIndex = i; qd\5S*Z1
for (int j = data.length - 1; j > i; j--) { Cj^:8 ?%
if (data[j] < data[lowIndex]) { Gu}
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lowIndex = j; `|@# ~
} A;VjMfoB
} <8#Q5
SortUtil.swap(data,i,lowIndex); )QS4Z{)U
} rrBu6\D
} :l<)p;\
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} _hT-5)1r
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Shell排序: .XD7};g
d3Dw[4
package org.rut.util.algorithm.support; ~xI1@^r
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import org.rut.util.algorithm.SortUtil; \z"0lAv"
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/** ZNb;24
* @author treeroot <-KHy`u
* @since 2006-2-2 m>dZ n
* @version 1.0 Sj?u^L8es}
*/ `tZu~
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public class ShellSort implements SortUtil.Sort{ bH+x `]{A
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/* (non-Javadoc) 34S|[PXd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ($a ?zJr
public void sort(int[] data) { zs#s"e:jeR
for(int i=data.length/2;i>2;i/=2){ h'Tn&2r6
for(int j=0;j insertSort(data,j,i); ,M@LtA3g
} ~&-8lD];LM
} fh~"A`d
insertSort(data,0,1); R Fgy
} EX^}#|e*h
];BGJ5^j
/** 01v7_*'R
* @param data >s#[dr\ww
* @param j eeIaH
>
* @param i 27mGX\T
*/ !O=?n<Ex"
private void insertSort(int[] data, int start, int inc) { =@%;6`AVcp
int temp; B&^WRM;7t
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ke.{wh\0
} VrL==aTYXs
} .XPcH(q
} gp07I{0~m
v@zpF)|
} "E`;8SZa
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快速排序: QoZ7l]^
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package org.rut.util.algorithm.support; xs<~[l
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import org.rut.util.algorithm.SortUtil; 7P3PQ%:
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/** _isqk~ ul
* @author treeroot TMt,\gTd
* @since 2006-2-2 =gI;%M\'
* @version 1.0 8`bQ,E+2
*/ |$[WnYP
public class QuickSort implements SortUtil.Sort{ a[TR_uR
IT,d(UV_
/* (non-Javadoc) ?39B(T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _?UW,5=O
*/ 3$Ecq|4J:
public void sort(int[] data) { $*)??uU
quickSort(data,0,data.length-1); ^qNh)?V?]I
} w k1O*_76
private void quickSort(int[] data,int i,int j){ !eb}jL
int pivotIndex=(i+j)/2; P'o:Vhm_H
file://swap cG|)z<Z
SortUtil.swap(data,pivotIndex,j); \BB(0Ah+t
!3~VoNh,
int k=partition(data,i-1,j,data[j]); bu`8QQ"C
SortUtil.swap(data,k,j); Z4S0{:XY
if((k-i)>1) quickSort(data,i,k-1); eIVCg-l}
if((j-k)>1) quickSort(data,k+1,j); X8!=Xjl)
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} 7%rSo^t,L
/** a'R)3:S
* @param data Q_}i8p'
* @param i cG%ttfq\
* @param j V,,/}f'
* @return )9_jr(s
*/ &cj/8A5-
private int partition(int[] data, int l, int r,int pivot) { _n9+(X3
do{ y'sy]Q~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J&,N1B
SortUtil.swap(data,l,r); \Y'#}J"dh
} e|wH5(V
while(l SortUtil.swap(data,l,r); z4l
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return l; T';<;6J**
} c*nH=
+ -e8MvP
} tPO\ e]
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改进后的快速排序: 2u9^ )6/
]:* 8
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package org.rut.util.algorithm.support; n^QOGT.s6`
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import org.rut.util.algorithm.SortUtil; >`rK=?12<
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/** 6bL+q`3>
* @author treeroot 7?6?`no~JJ
* @since 2006-2-2 )k5lA=(Yr+
* @version 1.0 /a7tg+:
*/ ,e"A9ik#
public class ImprovedQuickSort implements SortUtil.Sort { .y7&!a35
w, 0tY=h6
private static int MAX_STACK_SIZE=4096; )"7hyW 5
private static int THRESHOLD=10; Ph&AP*Fq
/* (non-Javadoc) 3[Pa~]yS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YxMOr\B
*/ ]a%
*$TF
public void sort(int[] data) { T!6H5>zA
int[] stack=new int[MAX_STACK_SIZE]; 1j*I`xZ
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int top=-1; !Ju?REH
int pivot; 2A3;#v
int pivotIndex,l,r; \Cx)
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stack[++top]=0; $)|
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stack[++top]=data.length-1; W(*:8}m,p
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while(top>0){ 9kPwUAw
int j=stack[top--]; oF/5mh__(K
int i=stack[top--]; 9%\<x
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pivotIndex=(i+j)/2; H[o'j@0
pivot=data[pivotIndex]; &]~z-0`$!
@+",f]
SortUtil.swap(data,pivotIndex,j); G'XlsyaWrb
bw#zMU^E
file://partition STgl{#
l=i-1; Kb0OauW
r=j; ~CRr)(M
do{ s~$kzEtjjU
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _>HXQ6Hw
SortUtil.swap(data,l,r); UTQ$sg|7p
} TX{DZ#
while(l SortUtil.swap(data,l,r); }~lF Rf
SortUtil.swap(data,l,j); OVO0Emv
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if((l-i)>THRESHOLD){ jIMaPT
stack[++top]=i; {! RW*B
stack[++top]=l-1; s-r$%9o5
} Ah)OyO6
if((j-l)>THRESHOLD){ *iF>}yh e
stack[++top]=l+1; W|=?-
stack[++top]=j; 7Z>u|L($m
} GCrh4rxgg
|0(Z)s,
} b:7;zOtF
file://new InsertSort().sort(data); i;^
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insertSort(data); LBtVK, ?
} daBu<0\
/** Kzxzz6R?
* @param data / /qTMxn
*/ =mCUuY#
private void insertSort(int[] data) { j' -akXo<
int temp; JnCY O^Qj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .LafP}%
} f+0dwlIlC$
} iR4CY-
} 9>psQ0IRvr
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} GFvZdP`s4
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归并排序: >H@
dgb
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package org.rut.util.algorithm.support; I"3Qdi
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import org.rut.util.algorithm.SortUtil; TJ`E/=J!
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/** ^BjwPh4Z#
* @author treeroot DVD}
* @since 2006-2-2 ~! ]FF}6
* @version 1.0 :<%K6?'@^
*/ mBc;^8I?23
public class MergeSort implements SortUtil.Sort{
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wpY%"x#-+=
/* (non-Javadoc) H's67E/>*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~=%eOoZP;c
*/ uW4G!Kw28
public void sort(int[] data) { D>c%5h
int[] temp=new int[data.length]; =(*Eh=Pw
mergeSort(data,temp,0,data.length-1); `e~/
} MLmc]nL=
=b,$jCv<,5
private void mergeSort(int[] data,int[] temp,int l,int r){ [?W3XUJ,Y
int mid=(l+r)/2; L3nHvKA]
if(l==r) return ; Opmb
mergeSort(data,temp,l,mid); jL8&
mergeSort(data,temp,mid+1,r); AO;+XP=
for(int i=l;i<=r;i++){ &X_I^*
temp=data; ZERUvk
} {^9,Dy_D
int i1=l; PK3)M'[
int i2=mid+1; gq[}/E0e
for(int cur=l;cur<=r;cur++){ '.atbl
if(i1==mid+1) WKBPqfC
data[cur]=temp[i2++]; gU>Y
else if(i2>r) a%ec: %
data[cur]=temp[i1++]; 7H[#
else if(temp[i1] data[cur]=temp[i1++]; /.05rTpp
else QfU
0*W?r
data[cur]=temp[i2++]; GfQMdLy\Z
} 5#d"]7
} bm%2K@ /U
8[f]9P/i
} xQ1&j,R]
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改进后的归并排序: O:r<es1
CJjma=XH
package org.rut.util.algorithm.support; /c/!13|
H|F>BjXn5
import org.rut.util.algorithm.SortUtil; \R&`bAd k
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/** 2|EHNy!
* @author treeroot BAmH2"
* @since 2006-2-2 6$SsdT|8B
* @version 1.0 D8`,PXtV
*/ zfi{SO
l
public class ImprovedMergeSort implements SortUtil.Sort { U@D=.6\B
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private static final int THRESHOLD = 10; ]|Vm!Q
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/* ,2H5CFX/
* (non-Javadoc) OD>-^W t;%
* ; {I{X}b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rVQ:7\=Z
*/ u9mMkzgSkP
public void sort(int[] data) { /CKkT.Le
int[] temp=new int[data.length]; xkUsZ*X8B
mergeSort(data,temp,0,data.length-1); Ofqe+C
} ~<v`&Gm?"
pl fz)x3
private void mergeSort(int[] data, int[] temp, int l, int r) { X~GZI*P
int i, j, k; &xH>U*c
int mid = (l + r) / 2; f=~@e#U
if (l == r) i-sE\m
return; xZ`t~4qR
if ((mid - l) >= THRESHOLD) zd#qBj]g
mergeSort(data, temp, l, mid); 3p!R4f)GN
else _3A$zA
insertSort(data, l, mid - l + 1); #:' P3)&
if ((r - mid) > THRESHOLD) %PlPXoG=
mergeSort(data, temp, mid + 1, r); .h~)|"uzW
else %<1fj#X8
insertSort(data, mid + 1, r - mid); aM? 7'8/
'-w G
for (i = l; i <= mid; i++) { J5J3%6I
temp = data; B+zq!+ HJ
} * +A!12s@
for (j = 1; j <= r - mid; j++) { &??(EA3
temp[r - j + 1] = data[j + mid]; 5Odi\SJ&
} z_JZx]*/
int a = temp[l]; 8qS)j1.!
int b = temp[r]; 1%EY!14G+
for (i = l, j = r, k = l; k <= r; k++) { ?_<ZCH
if (a < b) { ,iSs2&$m
data[k] = temp[i++]; 'kW`62AX
a = temp; 7
hnTHL
} else { F;q I^{m2
data[k] = temp[j--]; .^JID~<?#
b = temp[j]; ?0'bf y]
} |C>Yd*E,C
} H7qda'%>
} VJ_E]}H
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/** Wt8;S$!=R
* @param data 9=3V}]^M
* @param l "]MF =-v
* @param i ;=h^"et
*/ HLk}E*.mC
private void insertSort(int[] data, int start, int len) { Ih,~h[
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P7u5Ykc*
} 7qL]_u[^
} fVf.u'.8
} )%ja6Vg
} jgEiemh&
[FyE{NfiJ%
堆排序: w`#lLl
B
>-)i_C2
package org.rut.util.algorithm.support; vj{h*~
Ap}:^k5{
import org.rut.util.algorithm.SortUtil; p[Q
1q\U
(^
/** m?<C\&)6x
* @author treeroot 0JNG\ARC
* @since 2006-2-2 d6hWmZVC
* @version 1.0 P\N`E?lJL
*/ g-*@I`k[
public class HeapSort implements SortUtil.Sort{ 3QV|@5L`[
.' .|s?s
/* (non-Javadoc) >DbG$V<v'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Rwr5
*/ Z71"d"
public void sort(int[] data) { ?c>j^}A/N
MaxHeap h=new MaxHeap(); d>vGx
h.init(data); H,H'bd/
for(int i=0;i h.remove(); Q`19YX
System.arraycopy(h.queue,1,data,0,data.length); eKStt|M'
} pOH_ CXw
kk!}mbA_}
private static class MaxHeap{ 2^qY,dL
7~ |o_T
void init(int[] data){ +8BH%f}X
this.queue=new int[data.length+1]; 7qzI]
for(int i=0;i queue[++size]=data; [IV8
fixUp(size); Ns1u0$fg
} \f{C2d/6j
} W*U\79H
AeUwih.
4
private int size=0; FirmzB Il5
A E7>jkHB
private int[] queue; 7Bmt^J5i&t
C'5i>;
public int get() { :Z=A,G
return queue[1]; EzG7RjW
} #~p1\['|M
`+*
M r
public void remove() { pOS.`rSK
SortUtil.swap(queue,1,size--); `7N[rs9|S
fixDown(1); C@Wm+E~;8
} Q>Q$BCD5
file://fixdown >Y{.)QS
private void fixDown(int k) { I S!B$
int j; *y N,e.t
while ((j = k << 1) <= size) { 7 v`Y*D
if (j < size %26amp;%26amp; queue[j] j++; 9*,5R,#
if (queue[k]>queue[j]) file://不用交换 ld2\/9+n
break; 2I>C A[qp
SortUtil.swap(queue,j,k); %W`pTvF
k = j; elP`5BuN
} y4shW|>5_
} %A W
private void fixUp(int k) { #j; &g1
while (k > 1) { |0-5-.
int j = k >> 1; O[`n{Vl/
if (queue[j]>queue[k]) y f+/Kj<
a
break; ]Fjz+CGg
SortUtil.swap(queue,j,k); 9"<)DS
k = j; a(BC(^1!
} S)Ld^0w
} \h
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KWN&nP
+
} (6JD<pBm
(dO4ww@O
} Ye1P5+W(
[_H9l)
SortUtil: ]p#Zdm1EL
KN+*_L-
package org.rut.util.algorithm; TXy*- <#vR
5(DCq(\P*
import org.rut.util.algorithm.support.BubbleSort; 6= 9
import org.rut.util.algorithm.support.HeapSort; JQbI^ef_;
import org.rut.util.algorithm.support.ImprovedMergeSort; +F67g00T|
import org.rut.util.algorithm.support.ImprovedQuickSort; OjZ+gl}
import org.rut.util.algorithm.support.InsertSort; v3aiX
import org.rut.util.algorithm.support.MergeSort; Vwv O@G7A
import org.rut.util.algorithm.support.QuickSort; `CHgTkv
import org.rut.util.algorithm.support.SelectionSort; GbZA3.J]yl
import org.rut.util.algorithm.support.ShellSort; x28Bz*O
]CHMkuP[k
/**
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* @author treeroot KE(kR>OB]
* @since 2006-2-2 LXw&d]P
* @version 1.0 %7V?7BE
*/ jP}N^
public class SortUtil { R\X=Vg
public final static int INSERT = 1; Dy8Go4
public final static int BUBBLE = 2; Z"E+ TX
public final static int SELECTION = 3; ew"[]eZ:ut
public final static int SHELL = 4; u`
public final static int QUICK = 5; v8wN2[fC
public final static int IMPROVED_QUICK = 6; d5WE^H)E.
public final static int MERGE = 7; I#9K/[
public final static int IMPROVED_MERGE = 8; r{Fu|aoa;5
public final static int HEAP = 9; qLPI^g,
iOD9lR`s
public static void sort(int[] data) { )fCl <KG*
sort(data, IMPROVED_QUICK); Kk??}
} b!UT<:o
private static String[] name={ {`1zVT p[<
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Dcp,9"yt%
}; 0jg-]
A)VOv`U@2
private static Sort[] impl=new Sort[]{ oM< &4F
new InsertSort(), x&8?/BR
new BubbleSort(), ~%sDQt\S
new SelectionSort(), OGae]O<
new ShellSort(), bg 7b!t1F
new QuickSort(), g[Yok`e[
new ImprovedQuickSort(), geT<vh Z6
new MergeSort(), UB(8N7_/
new ImprovedMergeSort(), r4_ c~\jH
new HeapSort() @o>2:D1G
}; $Y ]*v)}X
qnT:x{o
public static String toString(int algorithm){ NP|U
|zn
return name[algorithm-1]; 4#=^YuKaF1
} c{&sf
y
9$Hgh7'hvs
public static void sort(int[] data, int algorithm) { ql_aDoj
impl[algorithm-1].sort(data); `Y+p7*Qr2
} eJ?SLMLY
9]kWM]B)o
public static interface Sort { 2>s:wABb /
public void sort(int[] data); Ou,B3kuQ+
} &Cdd
67f#Z&r2k
public static void swap(int[] data, int i, int j) { Ho\z^w+T`
int temp = data; v'Lckw@G4
data = data[j]; W]reQ&<Z
data[j] = temp; eBBh/=Zc
} lYq
R6^
} "_5av!;A
g