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。 Jq(;BJ90R
插入排序: X<C fy
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package org.rut.util.algorithm.support; y9R%%i
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import org.rut.util.algorithm.SortUtil; ZYY2pY 1
/** G'}N ?8s1
* @author treeroot Fp@> (M#3
* @since 2006-2-2 ;zo|. YD
* @version 1.0 [pmIQ228
*/ *P7/ry^<F
public class InsertSort implements SortUtil.Sort{ Q8h0.(#-
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/* (non-Javadoc) uQx/o^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %s+'"E"E
*/ BLaNS4e
public void sort(int[] data) { \n,L600`q
int temp; /J_],KdU
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <&) hg:
} Nr$78] o9
} N*&T)a
} GwP!:p|
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} NNqvjM-
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冒泡排序: yn]Sc<uK
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package org.rut.util.algorithm.support; |X A0F\
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import org.rut.util.algorithm.SortUtil; m^qFaf)6
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/** 5j ]!r
* @author treeroot .$}z</#!
* @since 2006-2-2 G93V=Bk=
* @version 1.0 uyk;]EYjHZ
*/ N1c0>{
public class BubbleSort implements SortUtil.Sort{ ~!5Qb{^
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/* (non-Javadoc) 2[pOGc$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >]ux3F3\
*/ (T pnJq
public void sort(int[] data) { 80Fa i
int temp; >}~[ew
for(int i=0;i for(int j=data.length-1;j>i;j--){ d1c+Ii%
if(data[j] SortUtil.swap(data,j,j-1); F5cNF5
} 7~Inxk;
} <^5$))r
} %regt{
} 9%NsW3|
FqbGT(QB0
} Yq|_6zbYf
g.`Ntsi$wI
选择排序: jG{?>^
965 x_
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package org.rut.util.algorithm.support; )=K8mt0qob
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import org.rut.util.algorithm.SortUtil; @#W4?L*D
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/** }UGSE2^1
* @author treeroot H#YI7l2
* @since 2006-2-2 9{A4>
* @version 1.0 2Ul8<${c{
*/ 3zKeN:w
public class SelectionSort implements SortUtil.Sort { __tA(uA
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/* ue7D'
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* (non-Javadoc) &W<9#RPK'
* s
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9QHj$)?k,
*/ 9"S iHp\)
public void sort(int[] data) { tF/Ni*\^rV
int temp; -:=m-3*Tg
for (int i = 0; i < data.length; i++) { tx<^PV2
int lowIndex = i; zJ}abo6rVw
for (int j = data.length - 1; j > i; j--) { 9Ca0Tu
if (data[j] < data[lowIndex]) { S`
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lowIndex = j; -UidU+ES;
} =EYgck;)
} 0%&}w UjV
SortUtil.swap(data,i,lowIndex); dB#c$1
} .Y7Kd+)s)L
}
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} nJv=kk1|o
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Shell排序: s1[.L~;J
YGQ/zB^Pj
package org.rut.util.algorithm.support; vdUKIP
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import org.rut.util.algorithm.SortUtil; GL9'dL|
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/** Z VdQ$
* @author treeroot NA0Z~Ug>
* @since 2006-2-2 SfY 5Xgp
* @version 1.0 G{X7;j e
*/ [x,
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public class ShellSort implements SortUtil.Sort{ 7y30TU
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/* (non-Javadoc) |"Zf0G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |%XcI3@*
*/ z8kebS&5
public void sort(int[] data) { 7p!f+\kM
for(int i=data.length/2;i>2;i/=2){ Qp:m=f6@
for(int j=0;j insertSort(data,j,i); l9j=;h
} ,2FI?}+R
} jp4-w(
insertSort(data,0,1); 8#,_%<?UVy
} Hq>hnCT
R64f0NK.
/** K7{B!kX4k
* @param data x{ `{j'
* @param j )+,h}XqlX
* @param i .C+(E@ey A
*/ zHNBX
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private void insertSort(int[] data, int start, int inc) { /|&4&$
int temp; S^D@8<6GJ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {!?M!/d
} iC! 6g|]X
} @U?&1.\
} 8n2;47 a
&'Nzw2
} >e-0A
}z9v*C
快速排序: jHHCJOHB8
>y#qn9rV1
package org.rut.util.algorithm.support; Dz2Z
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:?ZrD,D
import org.rut.util.algorithm.SortUtil; S{MB$JA
Jwj=a1I 53
/** "+&pd!\
* @author treeroot tfm3IX
* @since 2006-2-2 X6t9*|C
* @version 1.0 X+u1p?
*/ bJ6C7-w:wa
public class QuickSort implements SortUtil.Sort{ WLVkrTvX
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/* (non-Javadoc) K(lVAKiP]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q*'OY~
*/ w<]-~`K
public void sort(int[] data) { <ycR/X
quickSort(data,0,data.length-1); b9T6JS j
} HSU?4=Q
private void quickSort(int[] data,int i,int j){ {<}Hut:a
int pivotIndex=(i+j)/2; b *0u xvLu
file://swap br k*;
SortUtil.swap(data,pivotIndex,j); LLzxCMc9*
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int k=partition(data,i-1,j,data[j]); >XiT[Ru
SortUtil.swap(data,k,j); @ %q>Jd
if((k-i)>1) quickSort(data,i,k-1); #k>A,
if((j-k)>1) quickSort(data,k+1,j); Ml?KnSb
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} ; 5[W*,7s
/** cCx{
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* @param data uz$p'Q
* @param i eFA,xzp
* @param j DC BN89#
* @return LIz'hfS!
*/ XUUP#<,s
private int partition(int[] data, int l, int r,int pivot) { fsnZHL}=n
do{ H*f2fyC1\
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]Z=al`-
SortUtil.swap(data,l,r); ${wp}<u_
} ,BGUIu6
while(l SortUtil.swap(data,l,r); +NvpYz
return l; w"QZ7EyJ
} tgl 4pAc
*0V'rH)
} BE~-0g$W
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改进后的快速排序: D8Mq '$-
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package org.rut.util.algorithm.support; R@_3?Z!W=
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import org.rut.util.algorithm.SortUtil; vMJ(Ll7/
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/** \>n[x;$
* @author treeroot :kwDa
a
* @since 2006-2-2 ^~bdAO81
* @version 1.0 anfnqa8
*/ s6_i>
public class ImprovedQuickSort implements SortUtil.Sort { ,Sy&?t}`
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private static int MAX_STACK_SIZE=4096; tc\ZYCFr
private static int THRESHOLD=10; El
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/* (non-Javadoc) -F3~X R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ocUBSK|K)
*/ ),j6tq[
public void sort(int[] data) { E:PPb9Kd
int[] stack=new int[MAX_STACK_SIZE]; F`{O
+bJ~S:[
int top=-1; K3,PmI&W
int pivot; J}#2Wy^{
int pivotIndex,l,r; +StsSZ
l]&x~K}
stack[++top]=0; l7 @cov
stack[++top]=data.length-1; 8xhx*A
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while(top>0){ Xrpvq(]
int j=stack[top--]; mieyL9*n7
int i=stack[top--]; 8_S| 8RW(
se=^K#o
pivotIndex=(i+j)/2; KMQPA>w#
pivot=data[pivotIndex]; ({!H()
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SortUtil.swap(data,pivotIndex,j); h/8p2Mrqi
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file://partition s| Q1;%Tj
l=i-1; 8IBr#+0
r=j; CQrP%}`r
do{ h.l.da1#
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); PDCb(5
SortUtil.swap(data,l,r); {Ja (+NQ
} e+4Eiv
while(l SortUtil.swap(data,l,r); WpnP^gmX
SortUtil.swap(data,l,j); EV w {G<
-Wh 2hWg+
if((l-i)>THRESHOLD){ ?.lo[X<,*
stack[++top]=i; T0)bnjm
stack[++top]=l-1; d~h;|Bl[
} ]+B.=mO_
if((j-l)>THRESHOLD){ t imY0fx#
stack[++top]=l+1; z5Tsu1c
stack[++top]=j; w9O!L9 6
} `<|<1,
uwZ,l-6T
} i?uX'apk
file://new InsertSort().sort(data); HJ0;BD.]
insertSort(data); #M+_Lk3
} `NEi/jB
/** ,Oy$q~.
* @param data
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*/ $N;J)
private void insertSort(int[] data) { y;<suGl
int temp; #d/T7c#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1,Mm+_)B
} _2{_W9k
} ~/z%yg
} 6-)WXJ@V
yG7H>LF?8
} <p/2 hHfiD
g0}jE%)
归并排序: uozq^sy
@F$}/
package org.rut.util.algorithm.support; WVOj;c
v>Kh5H5e~
import org.rut.util.algorithm.SortUtil; 748:*
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/** vD?D]8.F~Q
* @author treeroot .s!0S-RkC
* @since 2006-2-2 k<+Sj
h$
* @version 1.0 &NoA, `|7
*/ B7|%N=S%/
public class MergeSort implements SortUtil.Sort{ =s]2?m
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/* (non-Javadoc) 0R[fH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {Q_GJ
*/ 6-TYOUm
public void sort(int[] data) { Jvsy
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int[] temp=new int[data.length]; f5b|,JJ
mergeSort(data,temp,0,data.length-1); .35~+aqC
} SOM? 0.
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private void mergeSort(int[] data,int[] temp,int l,int r){ v~T)g"_|
int mid=(l+r)/2; oq!\100
if(l==r) return ; &B[*L+-E
mergeSort(data,temp,l,mid); ]y=U"g
mergeSort(data,temp,mid+1,r); x>TIx[x
for(int i=l;i<=r;i++){ p5vQ.Ni*\-
temp=data; 8Q<Nl=g>'
} N|2d9E
int i1=l; Q<;EQb#
int i2=mid+1; I]+
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for(int cur=l;cur<=r;cur++){ gT$WG$^i
if(i1==mid+1) K{/i2^4
data[cur]=temp[i2++]; qK#"uU8B
else if(i2>r) knG:6tQ
data[cur]=temp[i1++]; $hcv}<$/
else if(temp[i1] data[cur]=temp[i1++]; i7r)9^y
else
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&
data[cur]=temp[i2++]; <Z 3C&BM
} )D6i {I0
} ^\Q,ACkZb
"N=$=Dy>
} YtSYe%
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改进后的归并排序: l9=Ka{$^*
(_@5V_U
package org.rut.util.algorithm.support; tugIOA
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import org.rut.util.algorithm.SortUtil; qp6'n&^&
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/** @YH>|{S&
* @author treeroot 1R~$m
* @since 2006-2-2 @#t<!-8d
* @version 1.0 U!o
*/ 6:B,ir
_
public class ImprovedMergeSort implements SortUtil.Sort { T5ky:{Y(
[|eIax xR,
private static final int THRESHOLD = 10; JcmMbd&B
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/* S$fS|N3]%
* (non-Javadoc) D3dh,&KO\
* Lv/}&'\(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /N*<Fq7w~
*/ RxJbQs$Ph
public void sort(int[] data) { db_?da;!`
int[] temp=new int[data.length]; hN=kU9@knC
mergeSort(data,temp,0,data.length-1); exiu;\+j
} ]f&]E
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private void mergeSort(int[] data, int[] temp, int l, int r) { lrKT?siB
int i, j, k; 9M9Fif.
int mid = (l + r) / 2; Ji!i}UjD7!
if (l == r) `V V>AA5
return; O*?^a7Z)4
if ((mid - l) >= THRESHOLD) TK'
5NM+4
mergeSort(data, temp, l, mid); yQj J-g(.
else We}9'X}
insertSort(data, l, mid - l + 1); sB*dv06b0
if ((r - mid) > THRESHOLD) H'YK j'
mergeSort(data, temp, mid + 1, r); #BBDI
else > _sSni
insertSort(data, mid + 1, r - mid); diM*jN#
,.*Df)+
for (i = l; i <= mid; i++) { '\8YH+%It
temp = data; ]O:8o<0
} &XCd2
for (j = 1; j <= r - mid; j++) { cW0\f5[/
temp[r - j + 1] = data[j + mid]; 2Q@na@s
} ,D`jlY-1l
int a = temp[l]; 9x4z m
int b = temp[r]; M61Nl)|mx&
for (i = l, j = r, k = l; k <= r; k++) { }\8-&VoY#X
if (a < b) { ~gZ1*8 s`
data[k] = temp[i++]; |?0MRX0'g
a = temp; WQVU 82b*
} else { (_}q>3
data[k] = temp[j--]; !+@70|gFF
b = temp[j]; ?F[_5ls|]
} <`vXyPA6
} dT 7fyn
} ]Ri=*KZa
MhE".ZRd
/** v
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* @param data H*<E5^#dw
* @param l Y+23 jlgb
* @param i :/][ n9J^
*/ X}3?k<m
private void insertSort(int[] data, int start, int len) { 4pXY7+e2'
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); s1W n.OGR4
} KV;q}EyG
} ip'{@1L
} 4NaT@68p
} N6_1iIM
5 8;OTDR!
堆排序: "\;n t5L
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fJgc"3
package org.rut.util.algorithm.support; CHqi5Z/+
zpf<!x^
import org.rut.util.algorithm.SortUtil; lAA6tlc#C
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/** p%bMfi*T
* @author treeroot 9&^5!R8
* @since 2006-2-2 67T.qX2I$
* @version 1.0 a $'U?%
*/ RJDk7{(
public class HeapSort implements SortUtil.Sort{ 0VJHE~Bgi
"Zn
nb*pOM
/* (non-Javadoc) U5cbO{\3I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'cS| BT
*/ M{)eA<6
public void sort(int[] data) { j<Pw0?~s6
MaxHeap h=new MaxHeap(); .@;5"
h.init(data); Bo
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for(int i=0;i h.remove(); $1s>efP-
System.arraycopy(h.queue,1,data,0,data.length); +Gy9K
} ft{i6}
"BpDlTYM
private static class MaxHeap{ ^P [#YO
9'|k@i:
void init(int[] data){ n?q+:P
this.queue=new int[data.length+1]; A
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for(int i=0;i queue[++size]=data; :D2GLq *\
fixUp(size); %O[1yZh
\
} "[z/\l8O
} n2c(x\DA&
3_
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private int size=0; 1v3
wLO"[,
private int[] queue; 0$yHO2 f
$OGMw+$C^
public int get() { hlc g[Qdo*
return queue[1]; ?6N\AM'
} u0[O /G
v{1g`E
public void remove() { kwS[,Qy\
SortUtil.swap(queue,1,size--); XWz~*@ci
fixDown(1); R*ex!u60M
} ecvZwL
file://fixdown -biw{
private void fixDown(int k) { l9y %@7
int j; L5&,sJz
while ((j = k << 1) <= size) { O7&OCo|b%>
if (j < size %26amp;%26amp; queue[j] j++; %.uN|o&n
if (queue[k]>queue[j]) file://不用交换 kY4h-oZ
break; !HXsxNe
SortUtil.swap(queue,j,k); n|QA\,=
k = j; `q\v~FT
} &Dp&
} NY[48H
private void fixUp(int k) { B(-F|q\
while (k > 1) { ^:O*Sx.CA
int j = k >> 1; 9/#b1NGv
if (queue[j]>queue[k]) lKRp9isn^
break; fv>Jn`
SortUtil.swap(queue,j,k); aH500
k = j; A>:31C
} D2:ShyYAS
} &Fmen;(
lrMkp@f.
} !) d
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} ,zBc-Cm
ZU9Rvtb KB
SortUtil: Y$3liDeL=
L#_QrR6Sny
package org.rut.util.algorithm; :3}K$
Q6[h;lzGV
import org.rut.util.algorithm.support.BubbleSort; MF::At[4
import org.rut.util.algorithm.support.HeapSort; <S@2%%W
import org.rut.util.algorithm.support.ImprovedMergeSort; `
-<S13
import org.rut.util.algorithm.support.ImprovedQuickSort; x1#6~283
import org.rut.util.algorithm.support.InsertSort; &v r0{]V^
import org.rut.util.algorithm.support.MergeSort; ljh,%#95=
import org.rut.util.algorithm.support.QuickSort; :\1vy5 _
import org.rut.util.algorithm.support.SelectionSort; mx^rw*'JGC
import org.rut.util.algorithm.support.ShellSort; YE@!`!`d:
\FyHIs
/** E{}eYU
* @author treeroot .ityudT<
* @since 2006-2-2 @hOY&
* @version 1.0 =Ajw(I[56
*/ 16N`xw+{
public class SortUtil { .lppT)P
public final static int INSERT = 1; )|S!k\^A
public final static int BUBBLE = 2; (Z>vbi%
public final static int SELECTION = 3; qI\B;&hr(
public final static int SHELL = 4; ?eR^\-e
public final static int QUICK = 5; MCfDR#a
public final static int IMPROVED_QUICK = 6; ?)+I'lW!
public final static int MERGE = 7; IAbH_+7O
public final static int IMPROVED_MERGE = 8; <ZeZq
public final static int HEAP = 9; 2 wZyUB;
}9&~+Q2
public static void sort(int[] data) { Cx`?}A\%
sort(data, IMPROVED_QUICK); rEZMX2
} x$V[xX
private static String[] name={ :B4X/
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" If. hA}
}; S
5nri(m
-M?s<R[&
private static Sort[] impl=new Sort[]{ }Xy<F?Mh
new InsertSort(), [6a&9#[A
new BubbleSort(), ~FZ=
new SelectionSort(), H52] Zm
new ShellSort(), sZ7BBJX2K
new QuickSort(), \Ot,&Z k2
new ImprovedQuickSort(), I =yy
I
new MergeSort(), [,p[%Dza
new ImprovedMergeSort(), Z6r_T
new HeapSort() p\/;^c`7
}; Zo36jSrCL
\!:^=2VF
public static String toString(int algorithm){ UPJ3YpK
return name[algorithm-1]; x AR9* <-
} ]W 6!Xw)[
#+Cu&l
public static void sort(int[] data, int algorithm) { m]:|j[!*M
impl[algorithm-1].sort(data); wloQk(T<W
} ?i7}d@636
f\gN+4)
public static interface Sort { 2p|[yZ
public void sort(int[] data); '}NQ`\k
} }zu?SZH
P_ x9:3
public static void swap(int[] data, int i, int j) { 3 ]}wZY0
int temp = data; 0SLS;s.GX
data = data[j]; =7uxzg/%Tj
data[j] = temp; o72G oUfs
} 7nAB^~)6l
} |/-H:\5