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。 ~K;QdV=YX
插入排序: A'|!O:s
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package org.rut.util.algorithm.support; [oLV,O|s|j
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import org.rut.util.algorithm.SortUtil; L)sgW(@2
/** [qYr~:` -[
* @author treeroot
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* @since 2006-2-2 h|qJ{tUWc$
* @version 1.0 vQMBJ&
*/ `R[Hxi
public class InsertSort implements SortUtil.Sort{ }E
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/* (non-Javadoc) Aedf (L7\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xVm-4gB
*/ I~GF%$-G
public void sort(int[] data) { iM+`7L'
int temp; -JMn?]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -pu5O9
@
} ^xZh@e5
} HK@ij,px
}
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} 6\4-I^=B
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冒泡排序: /at7H!
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package org.rut.util.algorithm.support; qkb'@f=
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import org.rut.util.algorithm.SortUtil; PMzPj,
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/** g52a
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* @author treeroot ^#/FkEt7bp
* @since 2006-2-2 % MHb
* @version 1.0 U&5*>fd=
*/ #.Rn6|V/4
public class BubbleSort implements SortUtil.Sort{ XjX
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/* (non-Javadoc) /(N/DMl[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V>{< pS
*/ t[^$F,
public void sort(int[] data) { ~3&{`9Y
int temp; %By Pwu:f
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~4~`bT9
if(data[j] SortUtil.swap(data,j,j-1); yYG<tUG;
} .w2 ID
} .Mt3ec<
} TktH28tK
} }r,\0Wm
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} zKJ2~=
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选择排序: Z~5) )5Ye;
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package org.rut.util.algorithm.support; m~=~DMj
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import org.rut.util.algorithm.SortUtil; ?e7]U*jEU
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/** 6
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* @author treeroot T{YZ`[
* @since 2006-2-2 J$dwy$n
* @version 1.0 D Ez,u^
*/ }Mcb\+[
public class SelectionSort implements SortUtil.Sort { <wH+\
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/* D &@]
* (non-Javadoc) \/A.j|by,>
* g)D_!iz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KpLmpK1
*/ U.%Kt,qB
public void sort(int[] data) { yIMqQSt79z
int temp; .HqFdsm
for (int i = 0; i < data.length; i++) { 2eT?qCxqc
int lowIndex = i; dUI5,3*
for (int j = data.length - 1; j > i; j--) { MmuT~d/
if (data[j] < data[lowIndex]) { kB\{1;
lowIndex = j; E~'mxx~i
} {T){!UVp!
} jlEz]@
i
SortUtil.swap(data,i,lowIndex); ()3\(d5e
} 'rQ"Dc1D
} A'WR!*Yt
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} bOS)vt*V
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Shell排序: <n"BPXF~
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package org.rut.util.algorithm.support; M>8J_{r^
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import org.rut.util.algorithm.SortUtil; UM}u(;oo%)
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/** O] _4pP
* @author treeroot =OVDJ0ozZ
* @since 2006-2-2 G#M)5'Q]U
* @version 1.0 g?C;b>4
*/ bF)G+IH
public class ShellSort implements SortUtil.Sort{ s27IeF3
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/* (non-Javadoc) 39pG-otJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L*nK>
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*/ k;WD[SV
public void sort(int[] data) { /?\3%<vn
for(int i=data.length/2;i>2;i/=2){ G
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for(int j=0;j insertSort(data,j,i); 2z.ot'
} Hvl
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} c\bL_
insertSort(data,0,1);
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} ZykMri3bi
W:w~ M'o
/** vW63j't_
* @param data {h<D/:^v
* @param j @[$_cGR7
* @param i yU$MB,1
*/ vdQoJWuB
private void insertSort(int[] data, int start, int inc) { 8%@|/
int temp; OMGggg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G=dzP}B'WA
} :FyF:=
} ~6vz2DuB=
} >yIJ8IDF
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} "L~(%Nx3
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快速排序: b}J%4Lx%m
}Q7y tE
package org.rut.util.algorithm.support; 4#U}bN
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import org.rut.util.algorithm.SortUtil; R[WiW RfD
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/** 2wf&jGHs
* @author treeroot 2[E wN!IZ
* @since 2006-2-2 jm_-f
* @version 1.0 )P$(]{
*/ *bkb-nKw
public class QuickSort implements SortUtil.Sort{ N<EVs.7
+)]YvZ6%[,
/* (non-Javadoc) 7
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Pud%}'
*/ )?n'ZhsX
public void sort(int[] data) { "Fz.#U
quickSort(data,0,data.length-1); c:[k+_Zr
} V+d_1]
l
private void quickSort(int[] data,int i,int j){ "fFSZ@,r
int pivotIndex=(i+j)/2; {(73*-~$
file://swap ]B8
A
SortUtil.swap(data,pivotIndex,j); 0.aXg "
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int k=partition(data,i-1,j,data[j]); ;*K4{wvG
SortUtil.swap(data,k,j); 0X$mT:=9
if((k-i)>1) quickSort(data,i,k-1); 99m2aT()
if((j-k)>1) quickSort(data,k+1,j); ,d
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} O*yxOb*
/** _z5/&tm_H
* @param data q5'S<qY^
* @param i zF&VzNR2
* @param j T U%@_vYR
* @return }xZi Ct
*/ &&ioGy}1
private int partition(int[] data, int l, int r,int pivot) { h8rW"8Th
do{ Fu7:4+
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !,4ag1
SortUtil.swap(data,l,r); _Hb;)9y
} :1v,QEb\
while(l SortUtil.swap(data,l,r); |rm elQ-
return l; 4=PjS<Lu8
} !^J;S%MB:K
^E&PZA\,;
} 8$00\><r
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改进后的快速排序: =Q#I@SVp2$
Z%T Ajm
package org.rut.util.algorithm.support; SnCwoxK
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import org.rut.util.algorithm.SortUtil; OATdmHW
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/** _=v#"l
* @author treeroot ]5!3|UYS
* @since 2006-2-2 OG\i?N
* @version 1.0 lFBdiIw
*/ Aq i:h]x
public class ImprovedQuickSort implements SortUtil.Sort { m0HK1'
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private static int MAX_STACK_SIZE=4096; =w2 4(S
private static int THRESHOLD=10; XN<SKW(H3
/* (non-Javadoc) K+g[E<x\=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X-pbSq~5
*/ 8-$t7bV5
public void sort(int[] data) { ?W/.'_
int[] stack=new int[MAX_STACK_SIZE]; sJHVnMA
4WT[(
int top=-1; nF3}wCe)
int pivot; &|>@K#V8-;
int pivotIndex,l,r; +ikSa8)*i
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stack[++top]=0; HR>Y?B{
stack[++top]=data.length-1; p8Vqy-:
fHt \KP
while(top>0){ 'K[ml ?_
int j=stack[top--]; bQ<qdGa
int i=stack[top--]; <'y<8gpM
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pivotIndex=(i+j)/2; AGhenDNV
pivot=data[pivotIndex]; *X5)9dq
Spm 0`
SortUtil.swap(data,pivotIndex,j); 6F\ 6,E
V&mkS
file://partition ]lWqV
l=i-1; yR[6s#F/h
r=j; I8H3*DE
do{ ^z,3#gK
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wmVmGa
R
SortUtil.swap(data,l,r); ]xC56se
} 9#8vPjXW}.
while(l SortUtil.swap(data,l,r); )>a~ %~:
SortUtil.swap(data,l,j); x6ghO-s
j#HXuV6
if((l-i)>THRESHOLD){ a`O'ZY
stack[++top]=i; .jrNi=BP*
stack[++top]=l-1; Q3@ zUjq_Q
} -FeXG#{)
if((j-l)>THRESHOLD){ <z Gh}.6v
stack[++top]=l+1; K:Z$V
stack[++top]=j; 7Sdo*z
} *PmZqe
fRp]
} I{Du/"r#
file://new InsertSort().sort(data); n,I3\l9
insertSort(data); .Rr^AGA4
} $b8[/],
/** emSq{A
* @param data Kda'N$|`
*/ mc{z
private void insertSort(int[] data) { K3&xe(
int temp; x}G:n[B7_V
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Hv6h7-
} osC?2.
} .7iRV
} *ug~LK5Y.
v^"\e&XL
} E@VQxB7+
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归并排序: J[/WBVFDf
ax@H^Gj@2
package org.rut.util.algorithm.support; z} fpV T
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import org.rut.util.algorithm.SortUtil; 41
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/** .?}M(mL
* @author treeroot c*KE3:
* @since 2006-2-2 }#z1>y!#
* @version 1.0 ?v^NimcZ
*/ dx%z9[8~{.
public class MergeSort implements SortUtil.Sort{ 4o>y9
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/* (non-Javadoc) #W\}v(Ke
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;i@S}LwL
*/ Okq,p=D6
public void sort(int[] data) { DrRK Sc(u9
int[] temp=new int[data.length]; +n^M+ea;
mergeSort(data,temp,0,data.length-1); JCWTB`EB>
} +!lDAkW0
qS?o22
private void mergeSort(int[] data,int[] temp,int l,int r){ ~aC ?M&
int mid=(l+r)/2; PD#,KqL:
if(l==r) return ; OqtGKda
mergeSort(data,temp,l,mid); ^*.[b
mergeSort(data,temp,mid+1,r); %;`Kd}CO
for(int i=l;i<=r;i++){ (j}7|*.
temp=data; <J509j
} j>8DaEfwx
int i1=l; =rKJJa N
int i2=mid+1; b.*LmSX#
for(int cur=l;cur<=r;cur++){ c^}G=Z1@
if(i1==mid+1) yan^\)HZ
data[cur]=temp[i2++]; \Qml~?$@lH
else if(i2>r) (p]FI# y
data[cur]=temp[i1++]; ?Y"%BS+pt
else if(temp[i1] data[cur]=temp[i1++]; 161P%sGx2
else MA
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data[cur]=temp[i2++]; la[pA
} XgxE M1(
} 2w|5SK_
"GMU~594
} JFv70rBe
SxF'2ii
改进后的归并排序: T//xxH]w-
kn3w6]
package org.rut.util.algorithm.support; RELNWr
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import org.rut.util.algorithm.SortUtil; *aErwGLB8
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/** r1!1u7dr
t
* @author treeroot ]V"P
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* @since 2006-2-2 v[L+PD
U
* @version 1.0 a (U52dO,
*/ TdFU,
public class ImprovedMergeSort implements SortUtil.Sort { IQ_6DF
; Y/nS
private static final int THRESHOLD = 10; j!+jLm!l
f:PlMv!{
/* oh5'Isb$
* (non-Javadoc) } c G)$E
* BX_yC=S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |>Q>d8|k
*/ ]zx%"SUM
public void sort(int[] data) { ^ITF*
int[] temp=new int[data.length]; @=kgK[t
9
mergeSort(data,temp,0,data.length-1); ky2]%cw
} ?:r?K|Ku
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private void mergeSort(int[] data, int[] temp, int l, int r) { 're:_;lG
int i, j, k; FJn-cR.n
int mid = (l + r) / 2; o~$O$
if (l == r) E{
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b)
return; |WB-N g
if ((mid - l) >= THRESHOLD) )N 3^r>(e<
mergeSort(data, temp, l, mid); AJyNlQ
else >pu4 G+M
insertSort(data, l, mid - l + 1); /3s&??{tv
if ((r - mid) > THRESHOLD) T0 K!Msz
mergeSort(data, temp, mid + 1, r); 2^[dy>[y0
else *}2L4]
insertSort(data, mid + 1, r - mid); X]y:uD{
vW?\bH7}I
for (i = l; i <= mid; i++) { kZe<<iv
temp = data; <7P[)X_
} q>_<\|?%x
for (j = 1; j <= r - mid; j++) { mZ71_4X#
temp[r - j + 1] = data[j + mid]; 36.,:!%p
} }MaY:PMA
int a = temp[l]; WW:G(
\`
int b = temp[r]; Avw=*ZW
for (i = l, j = r, k = l; k <= r; k++) { oC`F1!SfOO
if (a < b) { :M(uP e=D
data[k] = temp[i++]; !.P||$x`&
a = temp; !E$$FvL
} else { ,rMDGZm?
data[k] = temp[j--]; <AU*lLZ
b = temp[j]; g8O6
b
} W
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} <,CrE5Pl
} U:8[%a
<0d2{RQ;
/** G*z\
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* @param data qyM/p.mP
* @param l J>(X0@eWz
* @param i a&>NuMDI
*/ QIiy\E%
private void insertSort(int[] data, int start, int len) { h0<PQZJ
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?^voA.Bv<
} cWAw-E5
} %`F;i)Zz
} uZ6krI
} C8K2F5c5
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堆排序: ko9}?qs
`,]Bs*~
package org.rut.util.algorithm.support; CH6 m
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import org.rut.util.algorithm.SortUtil; ^+x?@$rq
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/** 6*i**
* @author treeroot G _cJI
* @since 2006-2-2 c)#P}Ai
* @version 1.0 l5-[a
*/ ,D{7=mDVm
public class HeapSort implements SortUtil.Sort{ X,Na4~JO(
{KgA
V
/* (non-Javadoc) 2 GRI<M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rpKZ>S|7+)
*/ nJe}U#
public void sort(int[] data) { n^nE&'[?0g
MaxHeap h=new MaxHeap(); x3ZF6)@
h.init(data); B@F@,?K4%
for(int i=0;i h.remove(); FJeh=\
System.arraycopy(h.queue,1,data,0,data.length); @jn&Wf?
} m?kiGC&m
AM-bs^
private static class MaxHeap{ -PV1x1|
*I 1 H
void init(int[] data){ X%b1KG|#(
this.queue=new int[data.length+1]; %mC@}
for(int i=0;i queue[++size]=data; irQ'Rm[
fixUp(size); L('1NN2
} $e+sqgU
} AERJ]$\
]LB_ @#
private int size=0; f30J8n"k
~A>fB2.pM
private int[] queue; F
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M5no4P<
public int get() { HJ&P[zV^
return queue[1]; {VAih-y
} _^ENRk@
@bg9
}Z%\h
public void remove() { ?;,;
SortUtil.swap(queue,1,size--); |O(>{GH
fixDown(1); t9`{^<LH
} /1EAj
file://fixdown qA[lL(
private void fixDown(int k) { 2W+~{3[#
int j; vzSb(
while ((j = k << 1) <= size) { DvH-M3
if (j < size %26amp;%26amp; queue[j] j++; W_B=}lP@x
if (queue[k]>queue[j]) file://不用交换 jZ.yt+9
break; _ ^FC9
SortUtil.swap(queue,j,k); SWrTM
k = j; W'4/cO
} ?("O.<
} ^$ Y9.IH"
private void fixUp(int k) { [-\ Y?3
while (k > 1) { +0Q
int j = k >> 1; :^y!z1\2(7
if (queue[j]>queue[k]) [S'1OR$FQ\
break; Q:q0C
+T
SortUtil.swap(queue,j,k); kgo#JY-4
k = j; >SXSrXyYX
} k>ErDv8
} _9>,9aL
Hf('BagBL
} SRfh{u
[~N;d9H+*1
} =RWTjTZ
W^iK9|[qp
SortUtil: &%fcGNzJQ
CA#g(SiZ
package org.rut.util.algorithm; eJoM4v
`ArUoYbB
import org.rut.util.algorithm.support.BubbleSort; ;VLDXvGd
import org.rut.util.algorithm.support.HeapSort; ^/#+0/Bn
import org.rut.util.algorithm.support.ImprovedMergeSort; 5[;[ Te9=S
import org.rut.util.algorithm.support.ImprovedQuickSort; e_b,{l#
import org.rut.util.algorithm.support.InsertSort; Ii+3yE@c
import org.rut.util.algorithm.support.MergeSort; $U[d#:]
import org.rut.util.algorithm.support.QuickSort; 1>e30Ri,g
import org.rut.util.algorithm.support.SelectionSort; y11^q*}
import org.rut.util.algorithm.support.ShellSort; 1]If<
<
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/** i~Tt\UA>
* @author treeroot xCZ_x$bk
* @since 2006-2-2 4$R!)
* @version 1.0 [#GBn0BG)
*/ 3uYLA4[-B
public class SortUtil { W5u5!L/
public final static int INSERT = 1; nWsRauY
public final static int BUBBLE = 2; jgE{JK\n4
public final static int SELECTION = 3; [R4#bl
public final static int SHELL = 4; 9(]_so24,
public final static int QUICK = 5; cB,^?djJ3
public final static int IMPROVED_QUICK = 6; *fm?"0M5
public final static int MERGE = 7;
Fbo"Csn_
public final static int IMPROVED_MERGE = 8; *z[vp2
TN
public final static int HEAP = 9; 9i\}^ s2
Tu(:?
public static void sort(int[] data) { z<eu=OD4t
sort(data, IMPROVED_QUICK); K#A&
} <4TI;yy6?
private static String[] name={ Y@ v][Q
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %R$)bGT
}; q.J6'v lj/
SAnr|<Y/
private static Sort[] impl=new Sort[]{ 3X(^`lAf)
new InsertSort(), ZSNbf|ldiE
new BubbleSort(), Vu(NP\Wm
new SelectionSort(), 3.YH7rN
new ShellSort(), | +;ZC y
new QuickSort(), DG;u_6;JR
new ImprovedQuickSort(), Xt O..{qU
new MergeSort(), ftY&Q#[
new ImprovedMergeSort(), #)S }z+I
new HeapSort() b]]k\b
}; .!~ysy
.Vt|;P}
public static String toString(int algorithm){ Qb@j8Xa4[
return name[algorithm-1]; ;,-)Z|W
} |Kd6.Mx
@ fMlbJq
public static void sort(int[] data, int algorithm) { D&m1yl@\J
impl[algorithm-1].sort(data); dFg&|Lp
} {b- C,J
6Y [&1c8
public static interface Sort { s>;"bzzq
public void sort(int[] data); oRd{?I&NY
} <vl(a*4a
)[hs#nKTh
public static void swap(int[] data, int i, int j) { !&OdbRHM
int temp = data; Kj?)]Z4
data = data[j]; *4~7p4[
data[j] = temp; >> cW0I/`
} ?4SYroXUX|
} q[/g3D\G