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。 jo)6
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插入排序: cf)J )
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package org.rut.util.algorithm.support; W<v_2iVu
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import org.rut.util.algorithm.SortUtil; `)$`-Pw*
/** B| tzF0;c
* @author treeroot i2*d+?Er
* @since 2006-2-2 V$(/0mQV(
* @version 1.0 , ;%yf?
*/ iX%[YQ |
public class InsertSort implements SortUtil.Sort{ [EgW/\35
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/* (non-Javadoc) JkU1daTe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r'p =`2=
*/ 7:TO\0]2n
public void sort(int[] data) { r0\?WoF2C
int temp; '<7S^^ax
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
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} ,^ 7 CP
} zie=2
} <W*xshn
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} 7S<UFj
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冒泡排序: Ra[>P _
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package org.rut.util.algorithm.support; /THnfy\
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import org.rut.util.algorithm.SortUtil; Iq^if>
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/** y])).p P
* @author treeroot NG" yPn
* @since 2006-2-2 Bd5+/G=m
* @version 1.0 Fnb2.R'+
*/ $"\O;dp7l
public class BubbleSort implements SortUtil.Sort{ 1{Jb"
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/* (non-Javadoc) o>F*Itr{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OQScW2a&
*/ Q`A6(y/s?
public void sort(int[] data) { 2+.18"rvi
int temp; "Z T.k5Z
for(int i=0;i for(int j=data.length-1;j>i;j--){ _yv Luj
if(data[j] SortUtil.swap(data,j,j-1); OR4!YVVQ
} j)by }}
} y\'P3ihK
} \~#WY5
} EB!daZH,
7J|&U2}c
} |TTS?
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选择排序: 'e@=^FC
rwSbqL^eM
package org.rut.util.algorithm.support; x6;j<m5Mjx
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import org.rut.util.algorithm.SortUtil; J#Z5^)$
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/** c2 *`2qK#
* @author treeroot 7LCp7$Cp
* @since 2006-2-2 ]6&$|2H?Ni
* @version 1.0 mI7~c;~
*/ [A9JshMo
public class SelectionSort implements SortUtil.Sort { O'$K],=BS
PB9/m-\H
/* uP@\#/4u
* (non-Javadoc) 2r&R"B1`(
* _w(ln9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V*RdDF7
*/ C5@V/vA
public void sort(int[] data) { +}@8p[`)
int temp; = 96P7#%
for (int i = 0; i < data.length; i++) { !MVj=(
int lowIndex = i; y3eHF^K+$
for (int j = data.length - 1; j > i; j--) { >MG(qi
if (data[j] < data[lowIndex]) { 2(M6(xH>
lowIndex = j; B= X,7
} V&ot3- Rf
} o>?*X(+le
SortUtil.swap(data,i,lowIndex); ~@4'HMQ
} FT89*C)oD
} &|Np0R
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} U#
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Shell排序: Q@-ovuxi
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package org.rut.util.algorithm.support; o.7{O,v
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import org.rut.util.algorithm.SortUtil; h}L}[
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/** EQ<RDhC@b
* @author treeroot nSx]QREL!
* @since 2006-2-2 j1-,Sqi
* @version 1.0 r$(~j^<s
*/ DmqSQA
public class ShellSort implements SortUtil.Sort{ . +
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/* (non-Javadoc) H'= (`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e3(/qMl
*/ WYrI |^[>
public void sort(int[] data) { 6#e::GD
for(int i=data.length/2;i>2;i/=2){ YB,t0%vTJw
for(int j=0;j insertSort(data,j,i); Sw[{JB;y,
} o)Z=m:t,lK
} OGO~f;7
insertSort(data,0,1); q|.dez'
} }{[mrG
)G1P^WV4
/** nFRsc'VT
* @param data :5fAPK2r<
* @param j %|"g/2sF[G
* @param i k\`S
lb1
*/ NbRn*nb/T
private void insertSort(int[] data, int start, int inc) { *G5c |Y
int temp; )ChqATKg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ts$@s^S]
} i38[hQR9a
} [KJ
q
} 5W? v'"
,*I@
} kAA>FI6
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快速排序:
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package org.rut.util.algorithm.support; 1|r,dE2k9
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import org.rut.util.algorithm.SortUtil; @Xp~2@I=ls
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/** Gi2$B76<
* @author treeroot ,u9M<B<F
* @since 2006-2-2 V5f9]D
* @version 1.0 3< Od0J
*/ lB91An
public class QuickSort implements SortUtil.Sort{ ~lAKJs#{
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/* (non-Javadoc) %@"!8Y(j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {a(&J6$VE
*/ "&.S&=FlI
public void sort(int[] data) { Dnf*7)X
quickSort(data,0,data.length-1); _~u2: yl(
} ZraT3
private void quickSort(int[] data,int i,int j){ rjx6Djo>
int pivotIndex=(i+j)/2; SQ*k =4*r
file://swap 4LH[4Yj?`
SortUtil.swap(data,pivotIndex,j); A]0:8@k5
*J|(jdu7
int k=partition(data,i-1,j,data[j]); <[:o !$
SortUtil.swap(data,k,j); Z4hrn::
if((k-i)>1) quickSort(data,i,k-1); 2d>hi32I
if((j-k)>1) quickSort(data,k+1,j); yp.[HMRD
v"& pQ
} j=?'4sF
/** SMH<'F7i
* @param data 2{Vcb
* @param i 1 rs&74-
* @param j DV)3
* @return WI> P-D
*/ `o]g~AKX
private int partition(int[] data, int l, int r,int pivot) { #|GSQJ$F)`
do{ nrm+z"7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q#w8wH"
SortUtil.swap(data,l,r); )rW&c-'
} :r#)z4d5
while(l SortUtil.swap(data,l,r); 7{@l%jx][
return l; ($w@Z/;
} ~Nf})U
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} Y6i _!z[V[
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改进后的快速排序: dovZ#D@Q
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package org.rut.util.algorithm.support; @Jm7^;9/
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import org.rut.util.algorithm.SortUtil; 5tjP6Z`!9`
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/** 8to8!(
* @author treeroot hpTDxh'?$C
* @since 2006-2-2 :cu#V
* @version 1.0 qyC=(v
*/ 'r1LSht'
public class ImprovedQuickSort implements SortUtil.Sort { )^||\G
zDhB{3-Q1{
private static int MAX_STACK_SIZE=4096; H{J'#
9H
private static int THRESHOLD=10; g~V+4+
/* (non-Javadoc) qd3Q}Lk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Tbj=f
*/ 4P^6oh0"
public void sort(int[] data) { 7dsefNPb
int[] stack=new int[MAX_STACK_SIZE]; 8
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int top=-1; vAY,E=&XvM
int pivot; Y!iZW
int pivotIndex,l,r; 1f",}qe;
}_=eT]
stack[++top]=0; su*Pk|6%
stack[++top]=data.length-1; m]i @ +C
kmzH'wktt
while(top>0){ 6T 8!xyi-+
int j=stack[top--]; DCqY|4Qc
int i=stack[top--]; lL1k.&|5m
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pivotIndex=(i+j)/2; F}Vr:~
pivot=data[pivotIndex]; `Al;vVMRO
ifN64`AhRX
SortUtil.swap(data,pivotIndex,j); uqz]J$
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file://partition X7k.zlH7T
l=i-1; @(r/dZc
r=j; hI9
do{ __mF?m
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (/35pg6\
SortUtil.swap(data,l,r); PkI:*\R
} Xpzfm7CB/
while(l SortUtil.swap(data,l,r); cGjPxG;
SortUtil.swap(data,l,j); McB[|PmC
{G?N E
if((l-i)>THRESHOLD){ 9tF9T\jW
stack[++top]=i; #o1=:PQaC
stack[++top]=l-1; :
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} RKPO#qju\F
if((j-l)>THRESHOLD){ n:MdYA5,m
stack[++top]=l+1; 6@DF
stack[++top]=j; /Q,mJ.CnSR
} J:V?EE,\-
jy-{~xdg[
} 6{=\7AY
file://new InsertSort().sort(data); /SYw;<=
insertSort(data); )GHq/:1W
} <&C]sb
/** iY21Ql%
* @param data J2:y6kGj>
*/ &b:1I7Cp*
private void insertSort(int[] data) { /?SLdW
int temp; lg^Z*&(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5\z`-)
} >2~=)L
} wI(M^8F_Mf
} x.-+[l[1
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B}^w_C2
} 4?B\O`sy.
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归并排序: c/sC&i;%O
dAuJXGo
package org.rut.util.algorithm.support; p5G?N(l
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import org.rut.util.algorithm.SortUtil; K6R.@BMN
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/** wmTb97o
* @author treeroot .9wk@C(Eh_
* @since 2006-2-2 =?!wXOg_
* @version 1.0 zCk^B/j sM
*/ ]q4rlT.i
public class MergeSort implements SortUtil.Sort{ Dh=9Gns9
@;"|@!l|
/* (non-Javadoc) E>K!Vrh-L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z<Nfm
*/ {;2PL^i
public void sort(int[] data) { 3W
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int[] temp=new int[data.length]; kGl~GOB
a
mergeSort(data,temp,0,data.length-1); .[_L=_.
} lnjXDoVb<
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private void mergeSort(int[] data,int[] temp,int l,int r){ vam;4vyu
int mid=(l+r)/2; 7' Mm205\
if(l==r) return ;
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mergeSort(data,temp,l,mid); |p ,P46I
mergeSort(data,temp,mid+1,r); kDsFR#w&`
for(int i=l;i<=r;i++){ \.-bZ$
temp=data; T:~vk.Or
} w(L4A0K[
int i1=l; :>5@cvc
int i2=mid+1; D A\2rLs
for(int cur=l;cur<=r;cur++){ j:v@pzTD
if(i1==mid+1) ;0Tx-8l
data[cur]=temp[i2++]; uLV#SQ=bZN
else if(i2>r) `x*Pof!Io
data[cur]=temp[i1++]; [TmIVQ!B
else if(temp[i1] data[cur]=temp[i1++]; c24dSNJg,
else ln6d<;
M5
data[cur]=temp[i2++]; ,5h)x"s
} I`!<9OTBj
} 6^`1\
#f
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} K|[*t~59
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改进后的归并排序: 'd9INz.
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package org.rut.util.algorithm.support; %lGl,me H
9w7n1k.
import org.rut.util.algorithm.SortUtil; HMNLa*CL'
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/** WvY?
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* @author treeroot %WjXg:R
* @since 2006-2-2 fb e[@#:
* @version 1.0 JkbQyn
*/ |IzPgC
public class ImprovedMergeSort implements SortUtil.Sort { [<@.eH$hU/
+ R~'7*EI
private static final int THRESHOLD = 10; &OH={Au
Fww :$^_ k
/* W:pIPDx1=!
* (non-Javadoc) ;~m8;8)
* uxr #QA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #V~me
*/ a.k.n<
public void sort(int[] data) { 0Qf,@^zL*
int[] temp=new int[data.length]; P/W
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mergeSort(data,temp,0,data.length-1); [M=7M}f;
} ig/xv
k%WTJbuG<)
private void mergeSort(int[] data, int[] temp, int l, int r) { #Lh;CSS
int i, j, k; *nkoPVpC
int mid = (l + r) / 2; R{SF(g3
if (l == r) ivJ@=pd)B
return; |v3T!
if ((mid - l) >= THRESHOLD) v dc\R?
mergeSort(data, temp, l, mid); gCB |DY
else x??+~$}\*-
insertSort(data, l, mid - l + 1); Sw ig;`
if ((r - mid) > THRESHOLD) B|C2lu
mergeSort(data, temp, mid + 1, r); c(xrP/yOwi
else Ng2twfSl$
insertSort(data, mid + 1, r - mid); \@c,3
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c,
for (i = l; i <= mid; i++) { Yg||{
temp = data; Ga^"1TZ x
}
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for (j = 1; j <= r - mid; j++) { :(P9mt
temp[r - j + 1] = data[j + mid]; 8e1UmM[
} 3YOq2pW72G
int a = temp[l]; "*e$aTZB\
int b = temp[r]; qN9(S:_Px
for (i = l, j = r, k = l; k <= r; k++) { -=)H{
if (a < b) { }C"%p8=HM
data[k] = temp[i++]; V^bwXr4f
a = temp; {EB;h\C
} else { s+$ Q}|?u
data[k] = temp[j--];
dy%;W%
b = temp[j]; wd8l$*F*
} *&^Pj%DX
} N/"{.3{W
} 84& $^lNV
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/** "^})zf~_
* @param data FrGgga$
* @param l hF~n)oQ
* @param i \/r}]Vz
*/ PR#exm&
private void insertSort(int[] data, int start, int len) { nv|NQ
Tk
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7rc0yB
} &[?\k>
} 'CM|@Zz%
} Tztu}t]N
} a/4T>eC
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堆排序: ?jv/TBZX4
$]/{[@5
package org.rut.util.algorithm.support; N2^=E1|_
c <B/V0]
import org.rut.util.algorithm.SortUtil; MzdV2.
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/** 99e.n0
* @author treeroot /$Nsd
* @since 2006-2-2 3w*R&
* @version 1.0 JzQ_{J`k
*/ [.7d<oY
public class HeapSort implements SortUtil.Sort{ xX&+WR
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/* (non-Javadoc) l` lk-nb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {T$9?`h~M
*/ tTl%oN8Qw
public void sort(int[] data) { y@S$^jk.
MaxHeap h=new MaxHeap(); U`(ee*}o
h.init(data); k_#ak%m/
for(int i=0;i h.remove(); t%0VJB,Q2
System.arraycopy(h.queue,1,data,0,data.length); yW=::=
} y&$A+peJ1
NZ:,ph
private static class MaxHeap{ KxJ!,F{>H
%v
M-mbX
void init(int[] data){ x)DMPVB<
this.queue=new int[data.length+1]; {BN#h[#B{
for(int i=0;i queue[++size]=data; G5BfNU
fixUp(size); LYTdTP
} ,q`\\d
} U)o-8OEZ9
jp%S3)
private int size=0; z#wkiCRYm
T4Uev*A
private int[] queue; <44G]eb
lfow1WRF
public int get() { *w`sM%]Rq
return queue[1]; Z"xvh81P
} 2*& ^v
vm8eZG|
public void remove() { ?(1y
SortUtil.swap(queue,1,size--); `g=J%p
fixDown(1); 6xx ?A>:
} -$ls(oot
file://fixdown 3qC}0CP*
private void fixDown(int k) { Gx/Oi)&/
int j; <dtGK~_
while ((j = k << 1) <= size) { 6@5+m
0`u3
if (j < size %26amp;%26amp; queue[j] j++; >1Ibc=}g
if (queue[k]>queue[j]) file://不用交换 E<Y$>uKA
break; D%pF;XY
SortUtil.swap(queue,j,k); `4J$Et%S
k = j; K\Wkoi5
} iOghb*aW
} Rr]Hy^w
private void fixUp(int k) { tX s\R(?T
while (k > 1) { k1~&x$G
int j = k >> 1; cOJo3p;&
if (queue[j]>queue[k]) jvL[
JI,b
break; Ynj,pl
SortUtil.swap(queue,j,k); =&]g "a'
k = j; S9y}
} b2Fe<~S{
} K($Npuu]
6<QQ@5_
} 4xje$/_d
*w\W/ Y
} $Ds2>G4c
i-_mTY&M
SortUtil: |0b`fOS
kbQ>a5`,x
package org.rut.util.algorithm; #=A)XlZMd
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&_
import org.rut.util.algorithm.support.BubbleSort; *])
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import org.rut.util.algorithm.support.HeapSort; :g0zT[f
import org.rut.util.algorithm.support.ImprovedMergeSort; uo8YP<q
import org.rut.util.algorithm.support.ImprovedQuickSort; jV1.Yz(`
import org.rut.util.algorithm.support.InsertSort; EV%gF
import org.rut.util.algorithm.support.MergeSort; wlqksG[B
import org.rut.util.algorithm.support.QuickSort; \ Gvm9M
import org.rut.util.algorithm.support.SelectionSort;
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@
import org.rut.util.algorithm.support.ShellSort; .Yn_*L+4*
kn4`Fa;)O
/** Bj;'qB>3
* @author treeroot {4Cmu;u
* @since 2006-2-2 583|blL
* @version 1.0 '-~~-}= sJ
*/ dUZ
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public class SortUtil { ;4|15S
public final static int INSERT = 1; <\^8fn
public final static int BUBBLE = 2; }Zn}
public final static int SELECTION = 3; VY4yS*y
public final static int SHELL = 4; sDlO#
public final static int QUICK = 5; aEeodA<(
public final static int IMPROVED_QUICK = 6; Z@!+v19^
public final static int MERGE = 7; e*NnVys
public final static int IMPROVED_MERGE = 8; VpDbHAg
public final static int HEAP = 9; BW4J> {
on`3&0,.
public static void sort(int[] data) { 6LIJQ
sort(data, IMPROVED_QUICK); m;QMQeGz
} hz@bW2S.
private static String[] name={ E ~<JC"]
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" rjYJs*#
}; 0x@
mZ
OQJ6e:BGt
private static Sort[] impl=new Sort[]{ -FaJ^CN~
new InsertSort(), %>{0yEC
new BubbleSort(), Tyx_/pJT
new SelectionSort(), /82b S|
new ShellSort(), s.C_Zf~3
new QuickSort(), aqk!T%fg
new ImprovedQuickSort(), UZ+<\+q3^
new MergeSort(), M .mfw#*
new ImprovedMergeSort(), t'ql[
new HeapSort() @\#td5'
}; tGa8W
r;N|)
public static String toString(int algorithm){ u'BaKWPS
return name[algorithm-1]; (*iHf"=\
} 1=V-V<
3a'<*v<xw
public static void sort(int[] data, int algorithm) { MQ6KN(?\ZL
impl[algorithm-1].sort(data); MQ8J<A Pf-
} wnC81$1l~
$xN|5;+
public static interface Sort { fNFY$:4X
public void sort(int[] data); }pkzH'$HJ
} wf<M)Rs|
}BP;1y6-r
public static void swap(int[] data, int i, int j) { $=4QO
int temp = data; 0L52#;?Si"
data = data[j]; ]c'A%:f<
data[j] = temp; T6=u P)!K
} 5=ryDrx
} Q^")jPd