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。
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插入排序: ?~.:C'
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package org.rut.util.algorithm.support; o2hZ=+w>
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import org.rut.util.algorithm.SortUtil; 9}Z;(,6/.\
/** ~Z*7:bPN!^
* @author treeroot !_~/Y/M
* @since 2006-2-2 _5(1T%K)
* @version 1.0 a^E>LJL
*/ Sl'$w4s
public class InsertSort implements SortUtil.Sort{ ~-uf%=
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/* (non-Javadoc) .XRe:\8mc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i_l{#*t
*/ Gm9
public void sort(int[] data) { 9ZatlI,
int temp; v6[VdWOx5
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fo`R=|L[
} , /jHhKW
} 5JK'2J&
} %g89eaEZ
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}
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冒泡排序: *//z$la
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package org.rut.util.algorithm.support; ["Tro;K#
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import org.rut.util.algorithm.SortUtil; _*8 6
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/** #w \x-i|
* @author treeroot >9i>A:
* @since 2006-2-2 7ncR2-{g
* @version 1.0 }LQV2 hKTG
*/ &)JoB
public class BubbleSort implements SortUtil.Sort{ \*qradgx$
NjA[(8\:
/* (non-Javadoc) UJ%.KU%Q}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6#K.n&=*
*/ {<gX~./]c
public void sort(int[] data) { e{Vn{.i,5
int temp; ,F`1VpTd8
for(int i=0;i for(int j=data.length-1;j>i;j--){
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if(data[j] SortUtil.swap(data,j,j-1); f7!48,(fB
} &V SZ
} Kb;Pd!Q
} wgolgof
} r&+C%
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} M8 \/[R\
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选择排序: 8'bZR]
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package org.rut.util.algorithm.support; Mqk|H~l5c
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import org.rut.util.algorithm.SortUtil; Eyk:pnKJb
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/** 2Q@Jp`#,4
* @author treeroot Vm8dX?
* @since 2006-2-2 J(maJuY
* @version 1.0 y;4g>ma0
*/ 3
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public class SelectionSort implements SortUtil.Sort { H.C*IL9
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/* gW4fwE^
* (non-Javadoc) nhC8Tq[m
* 4}cxSl]jf!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E4Ez)IaKyi
*/ |;t{L^
public void sort(int[] data) { t0v>J9
int temp; 7r)]9_[(
for (int i = 0; i < data.length; i++) { !O}e)t
int lowIndex = i; 9%3+\[s1
for (int j = data.length - 1; j > i; j--) { r|\{!;7
if (data[j] < data[lowIndex]) { K"5q387!
lowIndex = j; 61&{I>~1
} 7IkEud
} ht>/7.p]
SortUtil.swap(data,i,lowIndex); x>BFK@#
} ;#IrHR*Bk
} K7(k_4
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} Y"KJ`Rx
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Shell排序: ,,80nW9E
LikCIO
package org.rut.util.algorithm.support; matm>3n
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import org.rut.util.algorithm.SortUtil; O{7#Xj
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/** <gH-`3J6
* @author treeroot 0pW;H|h
* @since 2006-2-2 ]GCw3r(!
* @version 1.0 1|ddG010
*/ YPq:z"`-y4
public class ShellSort implements SortUtil.Sort{ .V0fbHYTJ
G?\eO&QG{"
/* (non-Javadoc) Ex*{iJ;\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {}iS5[H]
*/ u8|CeA
public void sort(int[] data) { 3$:F/H
for(int i=data.length/2;i>2;i/=2){ }aXS MxCd
for(int j=0;j insertSort(data,j,i); ,WnZ^R/n
} '/9MN;_
} /YJBRU2
insertSort(data,0,1); J&JZYuuf
} @W
@,8e]c
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/** mJ5%+.V
* @param data Iw(
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* @param j 4!xRA ''
* @param i `v<S
*/ 1{d;Ngx
private void insertSort(int[] data, int start, int inc) { #DJZ42
int temp; Y$c7uA:4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @]}/vsI m
} _Ye.29
} P0OMu/
} >t'A1`W
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} K]M@t=
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快速排序: (.YSs
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package org.rut.util.algorithm.support; Ars*H,9>e
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import org.rut.util.algorithm.SortUtil; 4@<wN \'
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/** 8@S]P0lk
* @author treeroot 4tUt"N
* @since 2006-2-2 n4 N6]W\5
* @version 1.0 #6[F&
*/ p8YOow7)
public class QuickSort implements SortUtil.Sort{ Ik5V?
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/* (non-Javadoc) c{?SFwgd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,C0y3pL
*/ 6w
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public void sort(int[] data) { D/4]r@M2c
quickSort(data,0,data.length-1); I!1+#0SG
} iTO Y
private void quickSort(int[] data,int i,int j){ 5P\A++22Y
int pivotIndex=(i+j)/2; l=Pw
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file://swap ,2^A<IwR
SortUtil.swap(data,pivotIndex,j); JTBt=u{6^
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int k=partition(data,i-1,j,data[j]); \{~CO{II
SortUtil.swap(data,k,j); dvZlkMm
if((k-i)>1) quickSort(data,i,k-1); k2,`W2]^E
if((j-k)>1) quickSort(data,k+1,j); ,mi7WW9
K4]ZVMm/*
} 5|Z8UzL
/** F!/-2u5gF
* @param data *HGhm04F{
* @param i v+79#qWK|n
* @param j kdV9F
* @return 98?O[=
*/ =e PX^J*M'
private int partition(int[] data, int l, int r,int pivot) { N1.1
do{ Lz-|M?(
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !hS)W7!ik
SortUtil.swap(data,l,r); OU#p^5K
} 94t`&jZ&|u
while(l SortUtil.swap(data,l,r); 6d/v%-3
return l; +s;Vfc$b]H
} hmG8
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~ QohP`_
} g&EK^q
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改进后的快速排序: +(afO~9
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package org.rut.util.algorithm.support; ~%M*@fm
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import org.rut.util.algorithm.SortUtil; U@n5:d=
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/** o:3(J}
* @author treeroot vx' ] ;
* @since 2006-2-2 kw gLK@@%1
* @version 1.0 `VUJW]wGu
*/ 2 @T~VRy
public class ImprovedQuickSort implements SortUtil.Sort { R2C~.d_TDu
{[Y7h}7
private static int MAX_STACK_SIZE=4096; H8dS]N~[Y
private static int THRESHOLD=10; :i0;jWcb
/* (non-Javadoc) 3^fwDt}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L+
XAbL)
*/ g"m9[R=]6
public void sort(int[] data) { &HAu;u@
int[] stack=new int[MAX_STACK_SIZE]; d8+@K&z|
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int top=-1; .8%b;b
int pivot; "X;5*
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int pivotIndex,l,r; [uHC
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stack[++top]=0; -{9mctt/gE
stack[++top]=data.length-1; ;bg]H >$U7
Sf.OBU1rs
while(top>0){ wQd8/&mmk
int j=stack[top--]; dPf7o
int i=stack[top--]; 7[mfI?*m
+TaxH;
pivotIndex=(i+j)/2; w{2CV\^>5
pivot=data[pivotIndex]; %0/qb0N&
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SortUtil.swap(data,pivotIndex,j); !.t D.(XP
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file://partition rKFnivGT
l=i-1; $M!iQ"bb
r=j; w4}Q6_0v
do{ K{`R`SXD
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q+*\'H>
SortUtil.swap(data,l,r); y06**f)
} xfI0P0+
while(l SortUtil.swap(data,l,r); i4h`jFS
SortUtil.swap(data,l,j); 9%NobT
IvY3iRq6
if((l-i)>THRESHOLD){ AJ&j|/
stack[++top]=i; *V\.6,^v
stack[++top]=l-1; ]$9y7Bhj.
} Ml{
]{n
if((j-l)>THRESHOLD){ ?nbu`K6T
stack[++top]=l+1; EQd<!)HZ
stack[++top]=j; 1ywdcg
} $0 vT_
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} Cc%{e9e*
file://new InsertSort().sort(data); @H4]Gp ]
insertSort(data); fsw[R0B
} \f(zMP
/** |#<z\u }
* @param data ` V [4
*/ C,$o+q*)W9
private void insertSort(int[] data) { w%iwxo
int temp; `sso Wn4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W}3%BWn
} } eHxw+.
} S$$SLy:P
} #Ktk[ "6
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} T`Up%5Dk
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归并排序: S1Od&v[R
/^k%sG@?
package org.rut.util.algorithm.support; A/UO cl+N
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import org.rut.util.algorithm.SortUtil; Y~{<Hs
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/** DC1.f(cdR
* @author treeroot I%Yq86
* @since 2006-2-2 u%yYLpaKf
* @version 1.0 qGMU>J.;c
*/ Xa#.GrH6
public class MergeSort implements SortUtil.Sort{ AH/o-$C&
UQ;2g\([
/* (non-Javadoc) ty"L&$bf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !m9hL>5vR
*/ rEC
public void sort(int[] data) { 00dY?d{[D
int[] temp=new int[data.length]; ]cS(2hP7
mergeSort(data,temp,0,data.length-1); a)=|{QR>W
} (?^ F }]
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private void mergeSort(int[] data,int[] temp,int l,int r){ Tsb}\
int mid=(l+r)/2; N wNxO
if(l==r) return ; \7*|u
mergeSort(data,temp,l,mid); UF-'(
mergeSort(data,temp,mid+1,r); ]a&riPh"
for(int i=l;i<=r;i++){ zx2`0%Q
temp=data; K\;4;6g
} &I8DK).M+
int i1=l; Wex2Fd?DO
int i2=mid+1; ED79a:
for(int cur=l;cur<=r;cur++){ b1i~F45h
if(i1==mid+1) x4wTQ$*1
data[cur]=temp[i2++]; wEX<[#a-
else if(i2>r) o
-)[{o\
data[cur]=temp[i1++]; G!I5Er0pdy
else if(temp[i1] data[cur]=temp[i1++]; /j$pV
else @sZ7Ka
data[cur]=temp[i2++]; X@tA+
} I(7iD. ^:
} RHNAHw9
s[h;9
I1w
} ftPhE)i
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改进后的归并排序: pKj:)6t"
Z]TQ+9t
package org.rut.util.algorithm.support; Y%eW6Y#
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import org.rut.util.algorithm.SortUtil; X o9vE3
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/** $V?sD{=W
* @author treeroot 5WRqeSGh
* @since 2006-2-2 RfD#/G3|
* @version 1.0 t g-(e=S4P
*/ DBcR1c&<H
public class ImprovedMergeSort implements SortUtil.Sort { +4T.3Njjn
047PlS
private static final int THRESHOLD = 10; Vn{;8hZ:a
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/* ^q/^.Gf
* (non-Javadoc) ,P`G IGvkA
* ^b|? ?9&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +MaEet
*/ GeB&S!F
public void sort(int[] data) { ?f'`b<o
int[] temp=new int[data.length]; Hmhsb2`\
mergeSort(data,temp,0,data.length-1); Y:m8UnT
} z2,NWmP|w
$yj*n;
private void mergeSort(int[] data, int[] temp, int l, int r) { Ti0kfjhX7
int i, j, k; !.O[@A\.-
int mid = (l + r) / 2; K,|3?CjS
if (l == r) GIpYx`mHi
return; y&8`NS#_p?
if ((mid - l) >= THRESHOLD) -@#],s7
mergeSort(data, temp, l, mid); xy!E_CuC$
else t5K#nRd Z:
insertSort(data, l, mid - l + 1); _:tS-Mx@5
if ((r - mid) > THRESHOLD) |4j6}g\
mergeSort(data, temp, mid + 1, r); Z+);}>-5
else dQ-g\]d|
insertSort(data, mid + 1, r - mid); |P|2E~[r
&Fuk+Cu{
for (i = l; i <= mid; i++) { [qkW/qS
temp = data;
fB]2"(
} OiZ-y7;k^
for (j = 1; j <= r - mid; j++) { '@#(jY0_
temp[r - j + 1] = data[j + mid]; ~-lUS0duh
} )c9Xp:
int a = temp[l]; uBg#zx
int b = temp[r]; "oZ_1qi<
for (i = l, j = r, k = l; k <= r; k++) { <^{(?*
if (a < b) { Nr,I`x\N
data[k] = temp[i++]; GtIAsC03
a = temp; fQ!W)>mi
} else {
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data[k] = temp[j--]; T>#~.4A0
b = temp[j]; BOM0QskLf
} ,d_rK\J
} N!dBF t"
} $qZ6i
|HY{Q1%
/** 30Qp:_D
* @param data $qg2@X.
* @param l pMViq0
* @param i Q7v1xBM
*/ iRG6Cw2
private void insertSort(int[] data, int start, int len) { RX?!MDO
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3%o}3.P,:@
} Lp|n)29+du
} y,n.(?!*
} xpuTh"ED
}
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堆排序: B|9XqQ EI
xmC5uT6L3M
package org.rut.util.algorithm.support; N z=P1&G'
v<l]K$5J&
import org.rut.util.algorithm.SortUtil; AFYdBK]
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/** NhF"%
* @author treeroot f61vE
* @since 2006-2-2 /.A"HGAk
* @version 1.0 ZXiJ5BZ
*/ '
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public class HeapSort implements SortUtil.Sort{ *tR'K#:&g!
FrLv%tK|
/* (non-Javadoc) UEYJd&n0CB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C; U4`0=8
*/ awz.~c++
public void sort(int[] data) { 7)RvBcM
MaxHeap h=new MaxHeap(); OuWRLcJ!
h.init(data); ScVbo3{m*T
for(int i=0;i h.remove(); j!k$SDA-
System.arraycopy(h.queue,1,data,0,data.length); Nqd9)WQ
} N,VI55J:y>
En&gI`3n
private static class MaxHeap{ {dE(.Z?]!#
PGYx]r
void init(int[] data){ +tg${3ti_
this.queue=new int[data.length+1]; ta x:9j|~
for(int i=0;i queue[++size]=data; <)sL8G9Y
fixUp(size); *(]ZdB_2
} r_tt~|s,>
}
4sH?85=j
<KCyXU*
private int size=0; ubVZEsoW?
K g.O2F77
private int[] queue; `0q=Z],
7z/O#Fbs
public int get() { 4:b'VHW.
return queue[1]; @PQd6%@
} tk8\,!9Q
L@Qvj-5e
public void remove() { ?pd/cj^
SortUtil.swap(queue,1,size--); #RSUChe7w
fixDown(1); DZH2U+K
} Hm|N{
file://fixdown P39oHW
private void fixDown(int k) { "<)Jso|
int j; 4_'B oU4
while ((j = k << 1) <= size) { Wy/h"R\=
if (j < size %26amp;%26amp; queue[j] j++;
\ Gi oSg
if (queue[k]>queue[j]) file://不用交换 D,=#SBJ :Z
break; UFj!7gX ]
SortUtil.swap(queue,j,k); DeT$4c*:[
k = j; ,TB$D]u8
} M&9urOa`
} 01RW|rN
private void fixUp(int k) { H}CmSo8&
while (k > 1) { q68m*1?y
int j = k >> 1; 7<B-2g
if (queue[j]>queue[k]) d:_;
break; d1
kE)R
SortUtil.swap(queue,j,k); ;/+U.I%z
k = j; ,i;#e
} ^%LyT!y
} ;$4&Qp:#
2hryY
} n)35-?R/M
'W("s
} %yl17:h#
A
McZm0c`
SortUtil: a <F2]H=J
0B}2~}#
package org.rut.util.algorithm; 0O]v|
;, \!&o6
import org.rut.util.algorithm.support.BubbleSort; `(I$_RSE")
import org.rut.util.algorithm.support.HeapSort; *uy<Om
import org.rut.util.algorithm.support.ImprovedMergeSort; C'Y2kb
import org.rut.util.algorithm.support.ImprovedQuickSort; <Kl$ek8
import org.rut.util.algorithm.support.InsertSort; zE/\2F$
import org.rut.util.algorithm.support.MergeSort; 8`]yp7ueS
import org.rut.util.algorithm.support.QuickSort; DpT$19Q+
import org.rut.util.algorithm.support.SelectionSort; i*!2n1c[
import org.rut.util.algorithm.support.ShellSort; ga S}>?qk
\W=
qqE]
/**
fWi/mK3c
* @author treeroot V s=o@
* @since 2006-2-2 ?Drq!?3PDc
* @version 1.0 Ve)BF1YG
*/ z%lJWvaA7
public class SortUtil { 2\T\p<_20
public final static int INSERT = 1; @tD (<*f+
public final static int BUBBLE = 2; m_`%#$s}
public final static int SELECTION = 3; 'lu3BQvfh
public final static int SHELL = 4; )Z['=+s%
public final static int QUICK = 5; _G25$%/LU
public final static int IMPROVED_QUICK = 6; E7aG&K
public final static int MERGE = 7; n"Bc2}{
public final static int IMPROVED_MERGE = 8; :rjfAe=s
public final static int HEAP = 9; apfr>L3
iXvrZofE
public static void sort(int[] data) { ~gNFcJuy
sort(data, IMPROVED_QUICK); {0-rnSjC
} x)eoz2E1
private static String[] name={ MPw?HpM
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S3E5^n\\
}; n5IQKYrg
/m 7~-~$V
private static Sort[] impl=new Sort[]{ Z{yH:{Vk
new InsertSort(), 0\@oqw]6hv
new BubbleSort(), ijzwct#.
new SelectionSort(), gxAy{
t
new ShellSort(), "VU/Ucb7
new QuickSort(), !H9^j6|
new ImprovedQuickSort(), WLfDXx2A
new MergeSort(), ae]6F_Qtc*
new ImprovedMergeSort(), d~{$,"!-f
new HeapSort() KNj~7aTp
}; 9tVV?Q@)
N>]J$[j
public static String toString(int algorithm){ #k`gm)|
return name[algorithm-1]; 8?YeaMIBB
} q(~|roKA(
jI H^
public static void sort(int[] data, int algorithm) { jiLJiYMg
impl[algorithm-1].sort(data); "dvo@n|
} hCd? Kti
eR6vO5to
public static interface Sort { <yBa5m@/
public void sort(int[] data); w1aoEo "S
} ylQj2B,CB
SO[ u4b_"h
public static void swap(int[] data, int i, int j) { xk7Dx}
int temp = data; *kYGXT,f]
data = data[j]; N#t`ZC&m'
data[j] = temp; MtN!Xx
} :XG~AR/
} %2g<zdab