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。 ++=jh6
插入排序: a!;#u8f
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package org.rut.util.algorithm.support; Z55C4F5v
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import org.rut.util.algorithm.SortUtil; ]?Q<lMG
/** >g{b'Xx
* @author treeroot /!*=*
* @since 2006-2-2 0sF|Y%N
* @version 1.0 Qzv&
*/ zbvV:9N
public class InsertSort implements SortUtil.Sort{ In;+wFu;M
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/* (non-Javadoc) *\`<=,H6<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?5j~"
*/ $1k@O@F(4
public void sort(int[] data) { <%=<9~e
int temp; D@c@Dt
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \\`(x:\
} ]q&NO(:kbq
} lLU8eHf\
} }!m}?
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} ?0lz!Nq'S
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冒泡排序: }|Bs|$q
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package org.rut.util.algorithm.support; EWOa2^%}Z\
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import org.rut.util.algorithm.SortUtil; -_Kw3x
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/** XaMsIyhI
* @author treeroot SUjo%3R
* @since 2006-2-2 (?"z!dg c
* @version 1.0 B_XX)y %V
*/ 6wZ)GLW[
public class BubbleSort implements SortUtil.Sort{ =RQI5nHdw
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/* (non-Javadoc) \(r$f!`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;{v2s;
*/ #J
public void sort(int[] data) { f|~X}R
int temp; b|\dHi2FT
for(int i=0;i for(int j=data.length-1;j>i;j--){ bo@,
B
if(data[j] SortUtil.swap(data,j,j-1); z8xBq%97us
} er3`ITp:dp
} <*oV-A
} //%#?JJV
} 6-+wfrN2
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} m!]J{OGG:
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选择排序: DZ9^>`*
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package org.rut.util.algorithm.support; amWKykVS5
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import org.rut.util.algorithm.SortUtil; {$v^2K'C
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/** F&
* @author treeroot pX1Us+%
* @since 2006-2-2 )c532
y
* @version 1.0 J5Ti@(G5V
*/ FOjX,@x&
public class SelectionSort implements SortUtil.Sort { n+nZ;GJ5d
iU(B#ohW"
/* @ 'U`a4
* (non-Javadoc) 6Xbf3So
* Q2F20b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nC)"% Sa
*/ WuTkYiF
public void sort(int[] data) { L$y~\1-
int temp; z";(0%
for (int i = 0; i < data.length; i++) { W{~ y< `D
int lowIndex = i; s^Xs*T@~h
for (int j = data.length - 1; j > i; j--) { t]?{"O1rC
if (data[j] < data[lowIndex]) { ]bYmM@
lowIndex = j; }{Ra5-PY
} +[4y)y`
} U]g9t<jD
SortUtil.swap(data,i,lowIndex); P!!O~P
} kfZ(:3W$
} 0|8cSE<
i
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} G2-0r.f
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Shell排序: e>bARK<
~ H/ZiBL@
package org.rut.util.algorithm.support; p"j&s
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import org.rut.util.algorithm.SortUtil; $aN%[
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/** QS1lg
* @author treeroot ($W%&(:/
* @since 2006-2-2 }>V=J aG
* @version 1.0 w\{#nrhYU
*/ hTmJ
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public class ShellSort implements SortUtil.Sort{ 6\`8b&'n
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o
/* (non-Javadoc) f.uy;v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O\)Kg2
*/ 9vSKIq
public void sort(int[] data) { /XU=l0u
for(int i=data.length/2;i>2;i/=2){ bW=3X-)
for(int j=0;j insertSort(data,j,i); q- 0q:
} LXPO@2QF
} 2A9crL$
insertSort(data,0,1); C%CgWO`Xj
} q?@*
GSd:Plc%
/** \&ki79Ly-
* @param data AWssDbh/[
* @param j M9m~ck
* @param i uh \Tf5
*/ u|6-[I
private void insertSort(int[] data, int start, int inc) { oK$Krrs0&
int temp; XODp[+xEEt
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C
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} z4$9,p
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} #9~,d<H
} 5% }!z~8Y4
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} c]bG5
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快速排序: 4=;j.=>0X
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package org.rut.util.algorithm.support; "S*@._
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import org.rut.util.algorithm.SortUtil; ?/-WH?1I
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/** \u))1zRd
* @author treeroot &\b(
* @since 2006-2-2 ;jN1n
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* @version 1.0 md!!$+a%|
*/
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public class QuickSort implements SortUtil.Sort{ A|YgA66M
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/* (non-Javadoc) )=MK&72r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?~E"!
*/ }maD8,:t
public void sort(int[] data) { iHK.hs;
quickSort(data,0,data.length-1); 1eEML"
} }pnp._j
private void quickSort(int[] data,int i,int j){ z(
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int pivotIndex=(i+j)/2; -;FAS3(wy
file://swap ;Krb/qr4_
SortUtil.swap(data,pivotIndex,j); w5
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int k=partition(data,i-1,j,data[j]); d|9]E&;,
SortUtil.swap(data,k,j); c2fSpvz
if((k-i)>1) quickSort(data,i,k-1); B& R?{y*
if((j-k)>1) quickSort(data,k+1,j); 67Qu<9}<-
78~/1-
} m^3j|'mG
/** Aq$1#1J
* @param data jb{9W7;RL
* @param i *'aouS/?<6
* @param j dU2;
* @return !`1m.
*/ O:pg+o&
private int partition(int[] data, int l, int r,int pivot) { |v5
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do{ ~I%164B+/
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); nZ (wfNk
SortUtil.swap(data,l,r); TW70z]B
} >5"e<mwD7d
while(l SortUtil.swap(data,l,r); E)f9`][
return l; gA}<Y
} 4VwMl)8ic
S]~5iO_bst
} b18f=<#
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改进后的快速排序: 2FV@?x0po
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package org.rut.util.algorithm.support; o0S8ki
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import org.rut.util.algorithm.SortUtil; u/-EVCHr
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/** ;134$7!Y
* @author treeroot :FtV~^Z
* @since 2006-2-2 F]r'j
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* @version 1.0 @TX@78fWz=
*/ aNNRw(0/
public class ImprovedQuickSort implements SortUtil.Sort { u%E8&T8,
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private static int MAX_STACK_SIZE=4096; p@uHzu7
private static int THRESHOLD=10; '5[(QM5Gi&
/* (non-Javadoc) GKSF(Tnj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KG9-ac
*/ _~ei1
G.R
public void sort(int[] data) { O!XSU,
int[] stack=new int[MAX_STACK_SIZE]; VBF:MAA
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int top=-1; \[.qN
int pivot; 5|N`:h'9M
int pivotIndex,l,r; ^Jq('@
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stack[++top]=0; e*PUs
stack[++top]=data.length-1; $C fp1#
JMo r[*
while(top>0){ (w5cp!qW9J
int j=stack[top--]; %N&W_.F6
int i=stack[top--]; ID!S}D
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pivotIndex=(i+j)/2; _@[W[=|H
pivot=data[pivotIndex]; 6
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SortUtil.swap(data,pivotIndex,j); |9IOZ>H9
l&e$:=;8
file://partition Ba|}$jo
l=i-1; q*`
m%3{
r=j; ~u2f`67{
do{ Y,Rr[i"j
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G)t-W%D&
SortUtil.swap(data,l,r); q/ 54=8*h0
} nXoDI1<[
while(l SortUtil.swap(data,l,r); 5;p|iT
SortUtil.swap(data,l,j); |3!)
ha=2isq
if((l-i)>THRESHOLD){ 2ww
H3}
stack[++top]=i; ryh"/lu[B
stack[++top]=l-1; oVn&L*H
} Wkjp:`(-$r
if((j-l)>THRESHOLD){ .Wy'
stack[++top]=l+1; PuGs%{$(h
stack[++top]=j; f+n {9Hz
} ~wv$uL8y
E?P>s T3B
} 5V =mj+X?
file://new InsertSort().sort(data); r~f;g9I
insertSort(data); V@-Q&K#
} Hv^Bw{"/R
/** 2zh-ms
* @param data tp7$t#
*/ 0:u:#))1
private void insertSort(int[] data) { Rk#'^}
int temp; y2s(]#8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j=M%*`@
} BSgT
6K
} ?2Z`xL9QT
} 6Q]c}
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} T@IzfX7
F!)[H["_
归并排序: _0'X!1"
Y)pop:y t
package org.rut.util.algorithm.support; ]j6pd*H
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import org.rut.util.algorithm.SortUtil; `NgQ>KV!
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/** v G\J8s
* @author treeroot 5=|h~/.k
* @since 2006-2-2 7I"~a<f0X`
* @version 1.0 5o>`7(t`
*/ Xnjl {`
public class MergeSort implements SortUtil.Sort{ [w@S/K[_|
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/* (non-Javadoc) MQN~I^v3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
J@_^]
*/ _",(!(
public void sort(int[] data) { L@6]~[JvP
int[] temp=new int[data.length]; GuU-<*u(d
mergeSort(data,temp,0,data.length-1); eUB!sR%
} O)VcW/
*Ic^9njt
private void mergeSort(int[] data,int[] temp,int l,int r){ UhS:tT]7
int mid=(l+r)/2; $o5i15Oy.
if(l==r) return ;
l:UKU !
mergeSort(data,temp,l,mid); 0{bl^#$f
mergeSort(data,temp,mid+1,r); Er~KX3vF
for(int i=l;i<=r;i++){ W7
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temp=data; ut560,h~
} C{uT1`
int i1=l; >L4F'#I
int i2=mid+1; 8&"Jlz
|
for(int cur=l;cur<=r;cur++){ l$9k:#\FD
if(i1==mid+1) !0Nf`iCQ(
data[cur]=temp[i2++]; i)X~L4gn
else if(i2>r) +<F3}]]
data[cur]=temp[i1++]; PLs`Ci|`
else if(temp[i1] data[cur]=temp[i1++]; tR'RB@kJ
else M`'DD-Q
data[cur]=temp[i2++]; 8Z9>h:c1
} ez[x8M>
} {._'Q[
_%D7D~2r|
} e8xq`:4Y
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改进后的归并排序: ?VE'!DW
l_:P|
package org.rut.util.algorithm.support; Nr>UZlU8
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import org.rut.util.algorithm.SortUtil; c]#}#RJ`\
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/** <zn)f@W
* @author treeroot Tt~[hC
h
* @since 2006-2-2 QA0uT{x90
* @version 1.0 +39uKOrZ
*/ zM&ro,W
public class ImprovedMergeSort implements SortUtil.Sort { :AztHf?X
~<VxtcEBz
private static final int THRESHOLD = 10; HSG Ln906
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/* T&pCLvkz
* (non-Javadoc) oydP}X
* =&UE67eK,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JnK<:]LcK
*/ ^" ?a)KC
public void sort(int[] data) {
{q8|/{;
int[] temp=new int[data.length]; :+jg311}
mergeSort(data,temp,0,data.length-1); `&q+ f+z
} {u1|`=;
k
$^/$N
private void mergeSort(int[] data, int[] temp, int l, int r) { ~"`e9Im
int i, j, k; hjg1By(
int mid = (l + r) / 2; .p e3L7g
if (l == r) Q34u>VkdQI
return; gF)-Ci
if ((mid - l) >= THRESHOLD) `f~bnL
mergeSort(data, temp, l, mid); j`.&4.7+
else #
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insertSort(data, l, mid - l + 1); G2I%^.s
if ((r - mid) > THRESHOLD) 3R%JmLM+R9
mergeSort(data, temp, mid + 1, r); &57~i=A
3
else uVU)LOx
insertSort(data, mid + 1, r - mid); 7MrHu2rZ=
ma*#*4
for (i = l; i <= mid; i++) { A~vx,|I
temp = data; @PNgqjd
} t`Z3*?UqI
for (j = 1; j <= r - mid; j++) { xJ/)*?@+
temp[r - j + 1] = data[j + mid]; TM#L.xPMf
} 2H9hN4N
int a = temp[l]; d<j`=QH
int b = temp[r]; Wgte.K> /
for (i = l, j = r, k = l; k <= r; k++) { ?o+%ckH
if (a < b) { PsNrCe%e
data[k] = temp[i++]; COHBjufmR
a = temp; Y3[KS;_fr9
} else { i3|xdYe$
data[k] = temp[j--]; 8/)\nV$0Y
b = temp[j]; `H:`JBe=+[
} u,8)M'UU
} klQmo30i
} +:jonN9d
>uYQt~s
/** 8493Sw
* @param data KM[0aXOtv
* @param l M}11 tUl
* @param i |A*4Fuc&
*/ 7=?!B#hm!
private void insertSort(int[] data, int start, int len) { G5U?]& I8
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); BXdk0
} `W)?d I?#M
} ^rq\kf*]
} xOShO"4Z
} xP_%d,
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堆排序: |33t 5}we
a~LA&>@
package org.rut.util.algorithm.support; /"La@M37
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import org.rut.util.algorithm.SortUtil; <]G'& iv>
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/** |^5"-3Q
* @author treeroot F5x*#/af
* @since 2006-2-2 (kY0<
* @version 1.0 S"G(_%
*/ uQ_C<ii"W
public class HeapSort implements SortUtil.Sort{ xf;>o$oN0P
UJqh~s
/* (non-Javadoc) IowXVdm@6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yKj}l,i~8
*/ +zch e
public void sort(int[] data) { %eofG]VM<
MaxHeap h=new MaxHeap(); /Lr`Aka5
h.init(data); *)w+xWmM3w
for(int i=0;i h.remove(); %Jh(5
System.arraycopy(h.queue,1,data,0,data.length); *Lz'<=DLoW
} 8f~x\.
w`8H=Hf
private static class MaxHeap{ -V4{tIQY
qVfn(rZ
void init(int[] data){ HM)D/CO,?
this.queue=new int[data.length+1]; |z3!3?%R
for(int i=0;i queue[++size]=data; ,|yscp8
fixUp(size); ;Z0&sFm
} g9^\QYh!
} y{3+Un
R3og]=uFzm
private int size=0; 0^V<,CAV
7NT}
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private int[] queue; s|XWw<Sa
(Ox&B+\v+v
public int get() { @:CM<+
return queue[1]; cA4?[F
} ~x9J&*zxM
1o\2\B=k{
public void remove() { Heh&;c
SortUtil.swap(queue,1,size--); Jy}~ZY
fixDown(1); h9m|f|cH
} c"kB @P
file://fixdown %>+lr%B
private void fixDown(int k) { c.LRS$o/j
int j; /dg?6XT/
while ((j = k << 1) <= size) { `.JW_F)1
if (j < size %26amp;%26amp; queue[j] j++; }a!|n4|`
if (queue[k]>queue[j]) file://不用交换 `T+>E0H(f
break; ;rT/gwg!
SortUtil.swap(queue,j,k); ]8 }2
k = j; ws`r\k]3J
} x7E] }h
} AKjobA#
private void fixUp(int k) { /f?;,CyI
while (k > 1) { #FAW@6QG
int j = k >> 1; 6P>Y2xV:
if (queue[j]>queue[k]) (Q||5
break; ejR$N!LL
SortUtil.swap(queue,j,k); T2]8w1l&K
k = j; 0$`pYW]
} ] +%`WCr9
} z6M5'$\y
^, =}'H]
} ~28{BY
[>GblL
} ]aMDx>OE
Jgr;'U$
SortUtil: feB ?
3C!|!N1Hn
package org.rut.util.algorithm; mIG>`7`7N
um$U3'0e
import org.rut.util.algorithm.support.BubbleSort; <Tgubv+J
import org.rut.util.algorithm.support.HeapSort; 1&e8vVN
import org.rut.util.algorithm.support.ImprovedMergeSort; H74'I}
import org.rut.util.algorithm.support.ImprovedQuickSort; <?KgzIq2
import org.rut.util.algorithm.support.InsertSort; ~DxuLk6
s
import org.rut.util.algorithm.support.MergeSort; sx+k
V A
import org.rut.util.algorithm.support.QuickSort; '=+N
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import org.rut.util.algorithm.support.SelectionSort; :,p3&2I
import org.rut.util.algorithm.support.ShellSort; 3v3cK1K@oE
7^rT-f07
/** @eBo7#Zr
* @author treeroot \M.?*p
* @since 2006-2-2 4Yok,<
* @version 1.0 bt1bTo
*/ L=Aj+
public class SortUtil { r*mYtS
public final static int INSERT = 1; 2Q(ZW@0
public final static int BUBBLE = 2; :n~Mg{j3
public final static int SELECTION = 3;
vxPr)"Vvz
public final static int SHELL = 4; tq}sedYhee
public final static int QUICK = 5; 6v:L8t$"
public final static int IMPROVED_QUICK = 6; *wqR .n?
public final static int MERGE = 7; _G-6G=q
public final static int IMPROVED_MERGE = 8; VWdTnu
public final static int HEAP = 9; Tg@G-6u0c
.Gr"|uII
public static void sort(int[] data) { 3nhQ^zqf
sort(data, IMPROVED_QUICK); .
&}x[~g
} Vo{
~D:)
private static String[] name={ jl7>
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /-lW$.+{?
}; zBTxM
3VMaD@nYa
private static Sort[] impl=new Sort[]{ _]'kw [
new InsertSort(), U<XfO'XJ
new BubbleSort(), B(71I;
new SelectionSort(), |uFb(kL[U
new ShellSort(), l#ct;KZ
new QuickSort(), g1F9IB42@<
new ImprovedQuickSort(), dQH8s
new MergeSort(), {7IZN< e
new ImprovedMergeSort(), {be|G^.c
new HeapSort() A`vRUl,c=
}; :SN? t
OBlQ
public static String toString(int algorithm){ $M-"az]
return name[algorithm-1]; .u7grC C
} \[]BB5)8
jsV1~1:83
public static void sort(int[] data, int algorithm) { K-*ZS8
impl[algorithm-1].sort(data); #+"D?
} "\9beK:l
B"4A1!
public static interface Sort { UZiL NKc
public void sort(int[] data); <uoVGV5N
} 0.!vp?
874j9ky[
public static void swap(int[] data, int i, int j) { +('xzW
int temp = data; Xsb.xxK.
data = data[j]; (Y&gse1}!
data[j] = temp; ;gJAxVD<
} <|WXFjn
} 33}p02#