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。 ;p:CrFv
插入排序: *?o 'sTH
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package org.rut.util.algorithm.support; EH]qYF.
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import org.rut.util.algorithm.SortUtil; +
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/** isz-MP$:K5
* @author treeroot {-yw@Kq
* @since 2006-2-2 b3q&CJ4|
* @version 1.0 {Vf].l:kn
*/ HyIyrU rYW
public class InsertSort implements SortUtil.Sort{ `Nv7c{M^
mh#_lbe'
/* (non-Javadoc) 7 M$cIWe$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M?I^`6IOc8
*/ SI7r`'7A'
public void sort(int[] data) { qrcir-+
int temp; V|pO";%>,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q=^TKsu
} #X0Y8:vj
} 1c4:'0
} %5j*e
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} :%IB34e
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冒泡排序: 8#RL2)7Uy`
`|4k>5k
package org.rut.util.algorithm.support; `Cz_^>]|=
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import org.rut.util.algorithm.SortUtil; 7~VDk5Z6
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/** 1}OM"V
* @author treeroot @Z
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* @since 2006-2-2 i.e4<|{
* @version 1.0 c4}|a1R\=
*/ 6Z{(.'Be
public class BubbleSort implements SortUtil.Sort{ >&Y\g?Z6G
{6>$w/+~
/* (non-Javadoc) 0_-P~^A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'v5q/l
*/ -6#
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public void sort(int[] data) { ~g*5."-i
int temp; ;G*)7fi
for(int i=0;i for(int j=data.length-1;j>i;j--){ k!d<2Qp W
if(data[j] SortUtil.swap(data,j,j-1); `{Fz
} Sp[]vm8N
} 2FR5RG
oD
} gN[^ ,u
} H"wIa8A
Rp6q)
} ^t,haO4
V2$M`|E
选择排序: 2h1P!4W85
YAd%d|Q
package org.rut.util.algorithm.support; "lL/OmG
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import org.rut.util.algorithm.SortUtil; 8I0G%hD
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/** kT:?1 w'
* @author treeroot c9+yU~(
* @since 2006-2-2 UtHloq(r
* @version 1.0 J@qLBe(v
*/ ~gg&G~ET
public class SelectionSort implements SortUtil.Sort { gq~"Z[T
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/* 54oJMW9
* (non-Javadoc) Nf}i/
* }Zfi/ ^0U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =D)ADZ\<r
*/ T2|os{U
public void sort(int[] data) { T/jxsIt3
int temp; ?h,.1Tb
for (int i = 0; i < data.length; i++) { KIY9?B=+
int lowIndex = i; o 9d|XY_
for (int j = data.length - 1; j > i; j--) { ul!q)cPb{
if (data[j] < data[lowIndex]) { X#o;`QM
lowIndex = j; ts
r{-4V
} o+Q2lO5
} -0<ZN(?|
SortUtil.swap(data,i,lowIndex); SUD~@]N1
} q XB E3
} ~w}=Oby'y
x\YVB',h
} uFFC.w
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Shell排序: j3j^cO[ 8v
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package org.rut.util.algorithm.support; cvYKZB
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import org.rut.util.algorithm.SortUtil; 7t+H94KG7
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/** nIqF:6/
* @author treeroot A:5P
* @since 2006-2-2 6rlvSdB
* @version 1.0 ]hZk#rp}
*/ GK#D R/OM
public class ShellSort implements SortUtil.Sort{ co'qVsOiH
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/* (non-Javadoc) 9fsc>9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z
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*/ ^!x qOp!
public void sort(int[] data) { n%!50E6*:
for(int i=data.length/2;i>2;i/=2){ %1)J Rc
for(int j=0;j insertSort(data,j,i); zbfe=J4c
} .`oKd@I*"
} j?VHR$
insertSort(data,0,1); V(Oi!(H;v
} }d@;]cps
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/** He&A>bA)z
* @param data ajX] ui
* @param j rw?wlBEG%
* @param i !04^E
*/ }&%&0$%
private void insertSort(int[] data, int start, int inc) { |*L/
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int temp; WN o+%
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &iT^IkA{
} &uI33=
} 4v2JrC;
} 5Hs!s+
1;v wreJ
} ?i}wm`
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快速排序: s:I 8~Cc
pE$*[IvQ'
package org.rut.util.algorithm.support; y8]vl;88yY
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import org.rut.util.algorithm.SortUtil; 1 K]
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/** lo36b zbT
* @author treeroot !"'@c
* @since 2006-2-2 T7N\b]?j@Y
* @version 1.0 ,QLy}=N
*/ Se(apQH
public class QuickSort implements SortUtil.Sort{ {fMo#`9=
Z1wfy\9c8
/* (non-Javadoc) ;XXEvRk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Me^L%%:@
*/ =q[ynZ8O\w
public void sort(int[] data) { A[f`xE
quickSort(data,0,data.length-1); E cd~H+
} 2SKtdiY
private void quickSort(int[] data,int i,int j){ ;`Z>^.CB
int pivotIndex=(i+j)/2; 4ZB]n,pfT
file://swap NU[Wj uLG
SortUtil.swap(data,pivotIndex,j); >uE<-klv
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int k=partition(data,i-1,j,data[j]); ZQmg;L&7
SortUtil.swap(data,k,j); $B OpjDV8
if((k-i)>1) quickSort(data,i,k-1); 5,R<9FjW
if((j-k)>1) quickSort(data,k+1,j); x( rl|o
x_= 3!)
} A64c,Uv
/** h9rrkV9
* @param data ,u14R]
* @param i \*c=bz&l
* @param j s*vtCdrE.
* @return Sf
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*/ ")w~pZE&+
private int partition(int[] data, int l, int r,int pivot) { u2*."W\
do{ w# ;t$qz}
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l!IN #|{(
SortUtil.swap(data,l,r); #vTF:r
} 6>h"Lsww
while(l SortUtil.swap(data,l,r); EDg; s-T=
return l; >,f5 5
} Wr,pm#gl6
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} fg
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改进后的快速排序: +@<@x4yt
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package org.rut.util.algorithm.support; ]K<7A!+@@p
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import org.rut.util.algorithm.SortUtil; 'JAe=K
H
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/** :oJ!9\5
* @author treeroot B:)vPO+ d
* @since 2006-2-2 %3q7i`AZ
* @version 1.0 $EZr@n
*/ h5[.G!
public class ImprovedQuickSort implements SortUtil.Sort { MA v-#
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private static int MAX_STACK_SIZE=4096; n'@XgUI,
private static int THRESHOLD=10; }$:ha>
/* (non-Javadoc) +b{tk=Q:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (-{.T
*/ fjS#
public void sort(int[] data) { ))J#t{X/8v
int[] stack=new int[MAX_STACK_SIZE]; a1ai?},
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int top=-1; I5g!c|#y
int pivot; M
U2];
int pivotIndex,l,r; {;hRFQ^b
N ^H
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stack[++top]=0; T7*p!0
stack[++top]=data.length-1; M5+K[Ir/y9
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while(top>0){ QB7^8O!<
int j=stack[top--]; h'A
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int i=stack[top--]; WQHlf0]
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pivotIndex=(i+j)/2; &-|(q!jm
pivot=data[pivotIndex]; Gdlx0i
r
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SortUtil.swap(data,pivotIndex,j); AaJz3oncJ
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file://partition $PTl{
l=i-1; =`wnng5m
r=j; <:~'s]`zf
do{ d'p@[1/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); nAyyjd3!S
SortUtil.swap(data,l,r); HE3x0H}o>
} Il!#]
while(l SortUtil.swap(data,l,r); tEllkHyef
SortUtil.swap(data,l,j); TzsNhrU{
@34CaZ$k
if((l-i)>THRESHOLD){ Yd<q4VJR
stack[++top]=i; SY+$8^
stack[++top]=l-1; xx,|n
} mQ:5(]v
if((j-l)>THRESHOLD){ T?8N$J
stack[++top]=l+1; tVAH\*a,/
stack[++top]=j; wU5= '
} QBTjiaYGa'
K<"Y4O#]
} 9icy&'
file://new InsertSort().sort(data); ,in"8aT}~
insertSort(data); CSIsi]H
} !,;/JxfgVh
/** .4,l0Nn`W
* @param data 3d>xg%?
*/ }U$p[Gi<
private void insertSort(int[] data) { (s!cd]Qa.
int temp; B6]M\4v
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y3mJO[U0 a
} 9X87"
} oz\r0:
} liVj-*m
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K!<-Oz"
} ziD+% -
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归并排序: hkR Jqta)
q=uJ^N
package org.rut.util.algorithm.support; qISzn04
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import org.rut.util.algorithm.SortUtil; wfBf&Z0{
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/** ~@EBW3>~5
* @author treeroot @m ?&7{y#?
* @since 2006-2-2 O:te;lQK
* @version 1.0 Xq.GvZS`
*/ A*+KlhT
public class MergeSort implements SortUtil.Sort{ YX6[m6LU
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/* (non-Javadoc) +L<x0-&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u[1'Ap
*/ FLOSdMYdw
public void sort(int[] data) { T~-PT39E
int[] temp=new int[data.length]; Z/=HQ8
mergeSort(data,temp,0,data.length-1); h%(0|
} HXRK<6k$
8nHFNOv6
private void mergeSort(int[] data,int[] temp,int l,int r){ 9y5nG
int mid=(l+r)/2; ;p2a .P
if(l==r) return ; -nC!kpo
mergeSort(data,temp,l,mid); -$5nqaK?
mergeSort(data,temp,mid+1,r); ? Glkhf7(
for(int i=l;i<=r;i++){ Lw #vHNf6
temp=data; aG/L'weR
} aT%6d@g
int i1=l; %%Z|6V74
int i2=mid+1; >PK\bLEo
for(int cur=l;cur<=r;cur++){ D*o[a#2_
if(i1==mid+1) (= ,w$
data[cur]=temp[i2++]; ,#QLc
else if(i2>r) :TN^}RML
data[cur]=temp[i1++]; nXcOFU
else if(temp[i1] data[cur]=temp[i1++]; pbb6?R,
else F5;x>;r
data[cur]=temp[i2++]; \l9S5%L9
} CGN:=D<
} MbeO(Q
Xw[|$#QKM
} ?*)wQZt;
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改进后的归并排序: !)TO2?,^
,mW-O!$3W
package org.rut.util.algorithm.support; 8t
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import org.rut.util.algorithm.SortUtil; 7Yd]#K{$
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/** q<*UeyE
S
* @author treeroot \hT=U*dMR
* @since 2006-2-2 # ~T
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* @version 1.0 G u P1
*/ 60&4?<lR4
public class ImprovedMergeSort implements SortUtil.Sort { ImVHX~qHJ
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private static final int THRESHOLD = 10; dTW3mF4=
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/* EkE U}2
* (non-Javadoc) pUXszPf
* nXnO]wXC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vx8-~Oq{|;
*/ .ITR3]$
public void sort(int[] data) { v22ZwP
int[] temp=new int[data.length]; p[lciWEW
mergeSort(data,temp,0,data.length-1); BSib/)p
} 0"to]=
4P\?vz"
private void mergeSort(int[] data, int[] temp, int l, int r) { *wetPt)~v_
int i, j, k; xnm!$ $W
int mid = (l + r) / 2; &DgJu.
if (l == r) qCaM]Y
return; kan4P@XVS
if ((mid - l) >= THRESHOLD) t)/:VImY
mergeSort(data, temp, l, mid); ^-i<TJ
else ;+h-o
insertSort(data, l, mid - l + 1); juc;]CHt'
if ((r - mid) > THRESHOLD) geB]~/-p
mergeSort(data, temp, mid + 1, r); Ue22,Pp6
else 8f0Ytfhw
insertSort(data, mid + 1, r - mid); 4?)-;Hx_X
t&99ZdE
for (i = l; i <= mid; i++) { &;O)Dw
temp = data; gr
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} ;3H#8x-
for (j = 1; j <= r - mid; j++) { p +>vX
X
temp[r - j + 1] = data[j + mid]; zgh~P^Z
} K9(Su`zr
int a = temp[l]; 0ynvn9@t
int b = temp[r]; ,S7g=(27(
for (i = l, j = r, k = l; k <= r; k++) { KDzTe9
if (a < b) { YZH&KGY
data[k] = temp[i++]; D-IXO@x
a = temp; BE]PM
n I
} else { wkwsBi
data[k] = temp[j--]; #^ cmh
b = temp[j]; &^4 E )F
} +Y
} UF ]g6u
} \h}a?T6
NlnmeTLO5
/** Yuo
* @param data L)Iv]u
* @param l V!94I2%#x
* @param i <(U:v
*/ :UgCP ~Y
private void insertSort(int[] data, int start, int len) { 2l9RU}
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Z7t-{s64
} 0=^A{V!m
} M>BcYbXf
} }JKK"d}U
} BCK0fk~
T+y3Ph--^
堆排序: 5@xl/
;%H/^b.c
package org.rut.util.algorithm.support; @a{1vT9b
N$i|[>`j
import org.rut.util.algorithm.SortUtil;
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/** hD5G\TR.
* @author treeroot mSu1/?PS
* @since 2006-2-2 ^l(Kj3gM
* @version 1.0 |rDv!m
*/ !h "6h
public class HeapSort implements SortUtil.Sort{ rz@;Zn
pg%'_+$~m
/* (non-Javadoc) 0rtP :Nj$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZKv^q%92
*/ )+nY-DB(
public void sort(int[] data) { x*" 0dYH
MaxHeap h=new MaxHeap(); LS=HX~5C
h.init(data); 'L"dM9#>
for(int i=0;i h.remove(); )fo9Qwe
System.arraycopy(h.queue,1,data,0,data.length); `2M`;$~ 5
} +Xg]@IS-eg
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private static class MaxHeap{ AIR\>.~"i*
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void init(int[] data){ xgi/,Nk '
this.queue=new int[data.length+1]; 0m|$ vb
for(int i=0;i queue[++size]=data; W\tSXM-Hg
fixUp(size); $1h , <$5H
} Y!8Ik(/~i
} -2dk8]KB]
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private int size=0; ) DzbJ}
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private int[] queue; (>E70|T
=psX2?%L
public int get() { HW)4#nLhh
return queue[1]; `nxm<~-\
} kAEm#oz=g
=3Y:DPMB
public void remove() { 4EO,9#0
SortUtil.swap(queue,1,size--); U2DE"
fixDown(1); .5',w"R
} GJL lMi
file://fixdown ]&')#YO
private void fixDown(int k) { Ighd,G-
int j; `(r[BV|h}
while ((j = k << 1) <= size) { gsqpQq7
if (j < size %26amp;%26amp; queue[j] j++; yJ(p-3O5
if (queue[k]>queue[j]) file://不用交换 MmjeFv
break; uHv9D%R
SortUtil.swap(queue,j,k); Hvn{aLa.
k = j; nH#|]gVI
} K&t+3O
} c({V[eGY
private void fixUp(int k) { JO4rU-
n
while (k > 1) { ~"E@do("
int j = k >> 1; yX}riXe
if (queue[j]>queue[k]) }4!R2c
break; o2FQ/EIE
SortUtil.swap(queue,j,k); v>2gx1F"?
k = j; |G+6R-_
} vpoeK'bi,
} c&1:H1#
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} V Q6&7@
c
<$^76=x,8P
} z*cC2+R}=
p*T`fOL
SortUtil: .kl _F7
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package org.rut.util.algorithm; .Y8z3O
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import org.rut.util.algorithm.support.BubbleSort; Ylc[ghx
import org.rut.util.algorithm.support.HeapSort; 8\+Q*7~@i
import org.rut.util.algorithm.support.ImprovedMergeSort; Jon<?DQj
import org.rut.util.algorithm.support.ImprovedQuickSort; e5!LbsJv
import org.rut.util.algorithm.support.InsertSort; H]LH~l
import org.rut.util.algorithm.support.MergeSort; i )Hjmf3
import org.rut.util.algorithm.support.QuickSort; $nB4Ie!WcR
import org.rut.util.algorithm.support.SelectionSort; y{.s
4NT
import org.rut.util.algorithm.support.ShellSort; %<|w:z$vp
-.8 nEO3
/** mCa[?
* @author treeroot }{J5)\s9
* @since 2006-2-2 l .8@F
* @version 1.0 t;7 tuq
*/ v-;j44sB
public class SortUtil { s3+^q
public final static int INSERT = 1; wic&
$p/%
public final static int BUBBLE = 2; }n+#o!uEf
public final static int SELECTION = 3; 6]=$c<.&
public final static int SHELL = 4;
vZHm'
public final static int QUICK = 5; de?Bn+mvi.
public final static int IMPROVED_QUICK = 6; ]]\\Y|0
public final static int MERGE = 7; :27GqY,3sK
public final static int IMPROVED_MERGE = 8; 5",@!1ju
public final static int HEAP = 9; 8Bvc#+B
WUQlAsme
public static void sort(int[] data) { YQyf:xJ
sort(data, IMPROVED_QUICK); ~kdxJP"
} 5]/i[T_
private static String[] name={ bk@F/KqL
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~bSPtH
]6d
}; GA,6G [E
wf4?{H
private static Sort[] impl=new Sort[]{ prf
new InsertSort(), 1m*fkM#
new BubbleSort(), 01n5]^.p
new SelectionSort(), +Ar=89
new ShellSort(), "~y@rqIba
new QuickSort(), qNI2+<u)j
new ImprovedQuickSort(), ('q u#.'
new MergeSort(), (Kl96G<Wej
new ImprovedMergeSort(), <r_L-
new HeapSort() F;5S2:a@Z
}; g$c\(isY;
m{(G%n>E&
public static String toString(int algorithm){ 'lPt.*Y<u
return name[algorithm-1]; vf=b5s(7Q
} <IWO:7*#
I:4m]q b
public static void sort(int[] data, int algorithm) { $F|3VQ~
impl[algorithm-1].sort(data); [whX),3>
} N? r{Y$x
c2aX_ "
public static interface Sort { ZXP9{Hh
public void sort(int[] data); 3g!tk9InG
}
UADD 7d
oe<9CK:?>
public static void swap(int[] data, int i, int j) { "*E#4e[
int temp = data; Rf)lFi
data = data[j]; *.X!AJ;M=O
data[j] = temp; P4xQ:$2!
} Uq0GbLjv"
} qJ).;S{AAt