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。 ^KZAYB9C
插入排序: siRnH(^J
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package org.rut.util.algorithm.support; StyB"1y
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import org.rut.util.algorithm.SortUtil; ^EUOmVN
/** I^M#[xA
* @author treeroot *K}z@a_
* @since 2006-2-2 :nKsZ1b X
* @version 1.0 \L9?69B~
*/ V8nz-DL{
public class InsertSort implements SortUtil.Sort{ g^z5fFLg/8
:n+y/6*
/* (non-Javadoc) B15O,sL&W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4h;f>BG
*/ 5xMA~I 0c
public void sort(int[] data) { V<HOSB7
int temp; AU\xNF3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t*Vao
} {(M&-~Yh
} Lz9$,Y[
} ~Q_)>|R2
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} 6`DwEs?Y{
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冒泡排序: =M1a 0i|d
#}/cM2m
package org.rut.util.algorithm.support; QDjW!BsX3
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import org.rut.util.algorithm.SortUtil; .Y u<%
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/** 0+K`pS'
* @author treeroot v7o?GQ75
* @since 2006-2-2 I
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* @version 1.0 A;fB6
*/ -YzQ2#K
public class BubbleSort implements SortUtil.Sort{ l$k]O
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c
/* (non-Javadoc) a%Z4_ToLZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IS,zy+w
*/ DnNt@e2|
public void sort(int[] data) { Hi; K"H]x1
int temp; OX)#F'Sl}
for(int i=0;i for(int j=data.length-1;j>i;j--){ #MhNdH#
if(data[j] SortUtil.swap(data,j,j-1); < v|%K.yd
} |t4Gz1"q=8
} Tn4W\?R
} $z2xZqe
} 9{)Z5%Kz
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} [Krm .)
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选择排序: Vqa5RVnI
U{T[*s
package org.rut.util.algorithm.support; BKE\SWu
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import org.rut.util.algorithm.SortUtil; C<[d
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/** mP9cBLz
* @author treeroot C1X}3bB
* @since 2006-2-2 d98))G~W
* @version 1.0 &Pu+(~'Q
*/ b$dJ?%W
public class SelectionSort implements SortUtil.Sort { ]>
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/* o,?!"*EP
* (non-Javadoc) =7 Jy
* DAjG*K{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +"k.E
x0:
*/ $R A4U<
public void sort(int[] data) { tt+>8rxF:;
int temp; .abyYVrN4?
for (int i = 0; i < data.length; i++) { cr76cYq"Q
int lowIndex = i; dV5PhP>6
for (int j = data.length - 1; j > i; j--) { `Mg8]H~
if (data[j] < data[lowIndex]) { cJxW;WI!,
lowIndex = j; d{QMST2&
} 6uu^A9x
} ^y&q5p jj
SortUtil.swap(data,i,lowIndex); Q=d.y&4%
} FX%t
} 4=u+ozCG
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} +mJ
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Shell排序: bH'S.RWp=
?r{TOjn
package org.rut.util.algorithm.support; 4^0d)+Ff
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import org.rut.util.algorithm.SortUtil; c:=7lI
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/** Ap11b|v
* @author treeroot GxYW4b
* @since 2006-2-2 \:]DFZ= !
* @version 1.0 <_"B}c/2$
*/ ;$vLq&(}
public class ShellSort implements SortUtil.Sort{ }czsa_
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/* (non-Javadoc) _,DO~L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4cott^K.
*/ S4L-/<s[*
public void sort(int[] data) {
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for(int i=data.length/2;i>2;i/=2){ MQwIPjk8
for(int j=0;j insertSort(data,j,i); vTpStoUM
} X.s*>'
} t";{1.
insertSort(data,0,1); znt)]>f#
} ?Fce!J
<v]z6B@9!
/** $[[?;g
* @param data 0z<H(|
* @param j Rb)|66&3&
* @param i i*X{^A73"
*/ Y^QKp"
private void insertSort(int[] data, int start, int inc) { ]53O}sH>
int temp; F7\BF
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Takt_N
} gXLCRn!iR
} @zo7.'7P
} 5gSylts8
34z_+
} vwVVBG;t
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快速排序: IrJ+Jov
doBNghS
package org.rut.util.algorithm.support; Ski G2n]
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import org.rut.util.algorithm.SortUtil; :-)GNf yGz
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/** I6+2>CUGo
* @author treeroot gc##V]OD
* @since 2006-2-2 Hk@r5<{
* @version 1.0 XlVc\?
*/ md?b*
public class QuickSort implements SortUtil.Sort{ Z(p*Z,?u
7!pLK&_
/* (non-Javadoc) (qUK7$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [q1Unm
*/
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public void sort(int[] data) { D z@1rc<B
quickSort(data,0,data.length-1); \SOeTn+
} .l\r9I(
private void quickSort(int[] data,int i,int j){ $ADPV,*gG
int pivotIndex=(i+j)/2;
{=3B)+N
file://swap (%bE~Q2P*<
SortUtil.swap(data,pivotIndex,j); |k6Ox*
Axlm<3<wf"
int k=partition(data,i-1,j,data[j]); IK'F{QPH
SortUtil.swap(data,k,j); L x.jrF|&
if((k-i)>1) quickSort(data,i,k-1); cJ.
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if((j-k)>1) quickSort(data,k+1,j); GzdRG^vN
fYB*6Xb,w
} .$Y?
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/** qbb6,DL7J
* @param data 34z+INkX
* @param i Tr%FUi
* @param j I+|uUg5
* @return gXt O*Rfqk
*/ {(}yG_Q]!
private int partition(int[] data, int l, int r,int pivot) { _42Z={pZZq
do{ F}D3,&9N
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
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SortUtil.swap(data,l,r); tw<P)V\h
} /g@^H/DO
while(l SortUtil.swap(data,l,r); K\(6rS}N
return l; G6V/S aD
} V.8%|-d
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} !MoOKW
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改进后的快速排序: m;o4Fu
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package org.rut.util.algorithm.support; 4z_n4=
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import org.rut.util.algorithm.SortUtil; b/u8}
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/** q jz3<`7-
* @author treeroot zb :kanb-
* @since 2006-2-2 =We2^W-{
* @version 1.0 & fu z2xv
*/ {E51Kv&_
public class ImprovedQuickSort implements SortUtil.Sort { k][h9'
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private static int MAX_STACK_SIZE=4096; fQU{SjG
private static int THRESHOLD=10; tuxRVV8l
/* (non-Javadoc) v L}T~_=3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tuLH}tkNY
*/ u1^\MVO8
public void sort(int[] data) { ?YBaO,G9o
int[] stack=new int[MAX_STACK_SIZE]; ]g,lRG
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int top=-1; Pu;yEh
int pivot; uw33:G
int pivotIndex,l,r; t'g^W
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stack[++top]=0; %
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stack[++top]=data.length-1; w"8V0z
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while(top>0){ I9&lO/c0
int j=stack[top--]; I\zemW!
int i=stack[top--]; E^wyD-ii/
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pivotIndex=(i+j)/2; Svw<XJ
pivot=data[pivotIndex]; 6G of.:"f
".P){Dep$4
SortUtil.swap(data,pivotIndex,j); g
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qTM%G-
file://partition X>zlb$
l=i-1; fF;h V
r=j; Ur!~<4GO
do{ eT[&L @l]b
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %>zjGF<
SortUtil.swap(data,l,r); f~ZEdq8
} hw=GR_,
while(l SortUtil.swap(data,l,r); 0V`[Zgf
SortUtil.swap(data,l,j); dv!r.
L:@fP~Erh
if((l-i)>THRESHOLD){ {@.Vh]
stack[++top]=i; G1d(,4Xp
stack[++top]=l-1; `}fw1X5L
} |cd-!iJX-
if((j-l)>THRESHOLD){ (3;@^S4&w
stack[++top]=l+1; zzIr2so
stack[++top]=j; e2w&&B-
} H}ZQ?uK;
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} ->gZ)?Fqy
file://new InsertSort().sort(data); KX4],B5 +
insertSort(data); YGk9b+`
} %8r/oS
/** Ri)uq\E/#
* @param data 9Ah[rK*}
*/ P@0Y./Ds
private void insertSort(int[] data) { lH2wG2
int temp; x({C(Q'O
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); obo&1Uv,/
} 80;n|nNB
}
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} 2@khSWV
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} i9 A ~<
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归并排序: 2k5/SV
X
Kq)MTlP0g
package org.rut.util.algorithm.support; I#G0, &Gv
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import org.rut.util.algorithm.SortUtil; 27A!\pn
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/** ?LP9iY${
* @author treeroot u:dx;*
* @since 2006-2-2 A''pS
* @version 1.0 MX|H}+\
*/ 9Q.#\
public class MergeSort implements SortUtil.Sort{ T!|=El>
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/* (non-Javadoc) ST dNM\+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /+|#^:@
*/ =L]Q2V}
public void sort(int[] data) { UE"GJt`I
int[] temp=new int[data.length]; ](jFwxU
mergeSort(data,temp,0,data.length-1); \Qy$I-Du
} ",Cr,;]
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private void mergeSort(int[] data,int[] temp,int l,int r){ 1AD]v<M
int mid=(l+r)/2; Jxl6a:
if(l==r) return ; r ?m6$
mergeSort(data,temp,l,mid); R 94^4I
mergeSort(data,temp,mid+1,r); I)SG wt-
for(int i=l;i<=r;i++){ z(13~38+
temp=data; wvby?MhPY
} z rfUQO
int i1=l; 6'-As=iw
int i2=mid+1; +.yT/y "
for(int cur=l;cur<=r;cur++){ jZ*WN|FK?
if(i1==mid+1) s!B/WsK
data[cur]=temp[i2++]; ~O6\6$3b5E
else if(i2>r) nH-V{=**
data[cur]=temp[i1++]; j\&pej
else if(temp[i1] data[cur]=temp[i1++]; # Su~`]
else Zjh2{ :
data[cur]=temp[i2++]; cr;`Tl~}s
} +^|iZbZKx
} jp2Q9Z
r'7LR
} s^8u&y)3
[g|Y7.j8
改进后的归并排序: {KL5GowH
, X{>
package org.rut.util.algorithm.support; Z u*K-ep"
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import org.rut.util.algorithm.SortUtil; 6<76H
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/** @.C{OSHE
* @author treeroot r' Z3
* @since 2006-2-2 /RnTQ4
* @version 1.0 #FxPj-3(ix
*/ }hpmO-
public class ImprovedMergeSort implements SortUtil.Sort { yV_wDeAz
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private static final int THRESHOLD = 10; kFLB> j97
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/* Fr2N[\>s
* (non-Javadoc) K4ZolWbU
* |I;$M;'r&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J @IS\9O
*/ qQ]]~F
public void sort(int[] data) { ]; $] G-
int[] temp=new int[data.length]; 5*g]qJF
mergeSort(data,temp,0,data.length-1); k?GD/$1t
} iA
}vKQ
?/hZb"6W
private void mergeSort(int[] data, int[] temp, int l, int r) { Y"g.IK`V
int i, j, k; $.%rAa_H
int mid = (l + r) / 2; Fg]?zEa
if (l == r) sBX-X$*N
return; I0'WOV70
if ((mid - l) >= THRESHOLD) ]b?9zeT*'l
mergeSort(data, temp, l, mid); @C_KV0i
else )FN;+"IJ
insertSort(data, l, mid - l + 1); KJn!Ap
if ((r - mid) > THRESHOLD) e.d
#wyeX
mergeSort(data, temp, mid + 1, r); bpAv1udX-W
else nAJdr*`a,5
insertSort(data, mid + 1, r - mid); (.Y/
rh*sbZ68>E
for (i = l; i <= mid; i++) { 1Tp/MV/>
temp = data; $g9**b@
} k;W@LfP
for (j = 1; j <= r - mid; j++) { OHrY(I6
temp[r - j + 1] = data[j + mid]; ZD/jX_!t
} +0wT!DZW\=
int a = temp[l]; l\0w;:N3
int b = temp[r]; n"Veem[_4g
for (i = l, j = r, k = l; k <= r; k++) { `mfq
2bVc
if (a < b) { /UcV
data[k] = temp[i++]; iSLGwTdLn
a = temp; zw<p74DH
} else { . 5y"38e
data[k] = temp[j--]; ZzGahtx)Y
b = temp[j]; ym,H@~
} iRo.RU8>
} 9# 4Y1L S)
} #FOqP!p.E
Cs3^9m6;d
/** 'wasZ b<^
* @param data UB`ToE|Ii
* @param l m><w0k?t
* @param i N7r_77%m0
*/ `$LWmm#
private void insertSort(int[] data, int start, int len) { 6DIZ@ oi
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g6t"mkMY
L
} -/C)l)V}
} O43YY2
} $q?$]k|M`
} Ox!U8g8c
lH^^77"4Qo
堆排序: %.v{N6
DhLqhME53
package org.rut.util.algorithm.support; sAn0bX
N{SQ(%V
import org.rut.util.algorithm.SortUtil; ^$>XW\yCs
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/** Qp,DL@mp>8
* @author treeroot s.Y4pWd5@
* @since 2006-2-2 cLa]D[H
* @version 1.0 pL=d% m.W
*/ mMx ;yZ
public class HeapSort implements SortUtil.Sort{ !rDdd%Z
w.\w1:d
/* (non-Javadoc) [S]S^ej*8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tY${M^^<J
*/ vr^~yEr
public void sort(int[] data) { q LL,F
MaxHeap h=new MaxHeap(); ?<&O0'Q
h.init(data); u=F+(NE"
for(int i=0;i h.remove(); 3ya1'qUC
System.arraycopy(h.queue,1,data,0,data.length); `O?TUQGR
} k#Of]mXXz
s`j~-P
private static class MaxHeap{ ,21 np
yH 9!GS#
void init(int[] data){ |s#'dS;
this.queue=new int[data.length+1]; `i) 2nNJ"
for(int i=0;i queue[++size]=data; `(+o=HsD
fixUp(size); mffn//QS
} NgCuFL(Ic
} u?Tpi[
#
5AS[\CB4
private int size=0; \I-#1M
TC~Q
G$NW
private int[] queue; ne61}F"E
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public int get() { /){KOCBl;
return queue[1]; ,oxcq?7#4
} "vCM}F
s5.AW8X=?*
public void remove() { 5ercD
SortUtil.swap(queue,1,size--); !MDNE*_
fixDown(1); )D'^3)FF
} +MbIB&fRCB
file://fixdown 'bGX-C
private void fixDown(int k) { > oA?6x
int j; l+V,DCE
while ((j = k << 1) <= size) { QVF]Ci_=
if (j < size %26amp;%26amp; queue[j] j++; "Td`AuP@,
if (queue[k]>queue[j]) file://不用交换 4nH*Ui!T
break; `-`qdda
SortUtil.swap(queue,j,k); R+q"_90_
k = j; V}d9f2
} IKtB;
} &mj6rIz
private void fixUp(int k) { hUQ,z7-
while (k > 1) { CycUeT
int j = k >> 1; I1X/Lj=
if (queue[j]>queue[k]) M<SdPC(+
break; &1l=X]%
SortUtil.swap(queue,j,k); Iz6y{E
k = j; WwF~d+>|C
} )15Z#`x
} F-D]TRG/*]
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} 6)oLus
;Sd\VR
} lZ8CY
#po5_dE\*
SortUtil: lf>*Y.!@me
}pk#!N
package org.rut.util.algorithm; yc2/~a_Gx
RsU3Gi_Zdz
import org.rut.util.algorithm.support.BubbleSort; kt[:@Nda9
import org.rut.util.algorithm.support.HeapSort; wxm:7$4C
import org.rut.util.algorithm.support.ImprovedMergeSort; D'Z|}(d&
import org.rut.util.algorithm.support.ImprovedQuickSort; lnovykR
import org.rut.util.algorithm.support.InsertSort; ;U1UFqZ`
import org.rut.util.algorithm.support.MergeSort; kyAXRwzI
import org.rut.util.algorithm.support.QuickSort; Am8x74?
import org.rut.util.algorithm.support.SelectionSort; [s9O0i"
Y
import org.rut.util.algorithm.support.ShellSort; @prG%vb"
9_\'LJ
/** 6.5T/D*TT
* @author treeroot {X2`&<i6
* @since 2006-2-2 BR'I+lQ
* @version 1.0 0JgL2ayIVI
*/ ^mAYBOE
public class SortUtil { ]0;864X0
public final static int INSERT = 1; M
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public final static int BUBBLE = 2; ]
2DH;
public final static int SELECTION = 3; t1VH doNN
public final static int SHELL = 4; 2^t#6XBk/
public final static int QUICK = 5; +(xeT+J
public final static int IMPROVED_QUICK = 6; vA$o~?a]/
public final static int MERGE = 7; 7'wS\/e4a
public final static int IMPROVED_MERGE = 8; rC:?l(8ng3
public final static int HEAP = 9; L,d
LE-L
TI9UXa:V\
public static void sort(int[] data) { w ;daC(:
sort(data, IMPROVED_QUICK); hYQ_45Z*?
} c4_`Ew^k
private static String[] name={ TF2>4 p
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" kc7lc|'z
}; mzQ`N}]T:
@
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private static Sort[] impl=new Sort[]{ 8 #ndFpu
new InsertSort(), LPG`^SA
new BubbleSort(), V{|}}b?w?
new SelectionSort(), mh<=[J,%p
new ShellSort(), eI1GXQ%
new QuickSort(), aNyvNEV3C
new ImprovedQuickSort(), ^xf<nNF:p
new MergeSort(), axHK_1N{
new ImprovedMergeSort(), h._nK\
new HeapSort() k{gLMl
}; C^QtSha
9}B`uJ
public static String toString(int algorithm){ /(O$(35
return name[algorithm-1]; K1V#cB
WO
} {;2vmx9
]"c+sMW
public static void sort(int[] data, int algorithm) { h^
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impl[algorithm-1].sort(data); 2+Px'U\
} !6Sd(2
!*2%"H*
public static interface Sort { dd?x(,"A`
public void sort(int[] data); ;q0uE:^S
} {lth+{&L#
`mye}L2I
public static void swap(int[] data, int i, int j) { CG'.:`t
int temp = data; xEuN
data = data[j]; T#pk]c6Q
data[j] = temp; `%3/
} DK0.R]&4(
} 7bxA]s{m