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。 PjZvQ\Z
插入排序: {,3>"
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package org.rut.util.algorithm.support; K:!"+q
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import org.rut.util.algorithm.SortUtil; N2B|SO''
/** 'U1R\86M
* @author treeroot ADS9DiX/
* @since 2006-2-2 OSlvwH%(EE
* @version 1.0 M}d_I+
*/ ahuGq'
public class InsertSort implements SortUtil.Sort{ Hcl(3>Jn2
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/* (non-Javadoc) ->sm+H-*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?sab*$wG
*/ 4
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public void sort(int[] data) { r) HHwh{9
int temp; !LggIk1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ./,/y"x
} lm!.W5-l
} qo p^;~
} B$-R-S6
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} `JOOnTenQ
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冒泡排序: P=7zs;k
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package org.rut.util.algorithm.support; <PapskO>
8s"%u )
import org.rut.util.algorithm.SortUtil; Q(lo{AFc
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/** ~T9/#-e>BF
* @author treeroot K!:azP,bZ
* @since 2006-2-2 oz AS[B6
* @version 1.0 '{E@*T/<.
*/ e91aK
public class BubbleSort implements SortUtil.Sort{ %JXE5l+pJ
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/* (non-Javadoc) DKne'3pH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TFH \K{DM
*/ q-.,nMUF
public void sort(int[] data) { SNfr"2c'h~
int temp; Px$/ _`H
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?,p;O
if(data[j] SortUtil.swap(data,j,j-1); +,2:g}5
} plUZ"Tr
} ,-izEr
} vk+VP 1D
} ' qWALu
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} W{%TlN
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选择排序: f%Ns[S~ r
n1JRDw"e$$
package org.rut.util.algorithm.support; hn^<;av=
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import org.rut.util.algorithm.SortUtil; /]=C{)8
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/** L%BNz3:Dt
* @author treeroot VSrr`B
* @since 2006-2-2 }2<r,
* @version 1.0 Anscr
*/ <0H"|:W>I]
public class SelectionSort implements SortUtil.Sort { ]DOX?qI
i
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/* whpfJNz
* (non-Javadoc) TT'[qfAI
* /a^1_q-bX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fBalTk;G{U
*/ T.@aep\"
public void sort(int[] data) { WX=Jl<
int temp; '$|[R98
for (int i = 0; i < data.length; i++) { 33#0J$j7
int lowIndex = i; L[^9E'L$
for (int j = data.length - 1; j > i; j--) { {p;zuCF1
if (data[j] < data[lowIndex]) { S'A>2>
lowIndex = j; (5R?#vj
} 1y-y6q
} /4c\K-Z;
SortUtil.swap(data,i,lowIndex); T^ w36}a
} LJ*q 1
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} (IC]?n}
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j
} 3D`YZ#M
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Shell排序: @\0Eu212
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package org.rut.util.algorithm.support; ?0)&U
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import org.rut.util.algorithm.SortUtil; oX0 D
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/** IqC]! H0
* @author treeroot D[^m{ 9_
* @since 2006-2-2 Gs9:6
* @version 1.0 odPL{XFj
*/ %K\?E98M
public class ShellSort implements SortUtil.Sort{ R(2tlZ
Cz72?[6
/* (non-Javadoc) +)j$|x~(A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c%&:6QniZ
*/ !'mq ?C=
public void sort(int[] data) { _acE:H
for(int i=data.length/2;i>2;i/=2){ I
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for(int j=0;j insertSort(data,j,i); Bm"KOr$}-
} 1jy9lP=
} I 4,K43|
insertSort(data,0,1); 2C/$Ei^t
} #Yr9AVr}K
c:-!'l$ !
/** Z2TL #@
* @param data kB'Fkqwm
* @param j Eve.QAl|
* @param i mMb'@
*/ ^;/b+ /B0
private void insertSort(int[] data, int start, int inc) { sB^<6W!`(
int temp; TYJ:!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ytz)d/3T
} bty/
} #bl6sa{E
} kMtwiB|7j
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} J]&y$?C
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快速排序: LM7$}#$R
`FYv3w2
package org.rut.util.algorithm.support; XVKfl3'%
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import org.rut.util.algorithm.SortUtil; RA G3o-
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/** 1_\;- !t
* @author treeroot !1q 9+e
* @since 2006-2-2 E}sO[wNPf
* @version 1.0 6ek;8dL
*/
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public class QuickSort implements SortUtil.Sort{ Md0sK
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/* (non-Javadoc) -PS#Z0>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ai
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*/ =|I>G?g-
public void sort(int[] data) { |lJX 3
quickSort(data,0,data.length-1); q o\?o
} _io+YzS
private void quickSort(int[] data,int i,int j){ [k6nW:C
int pivotIndex=(i+j)/2; [ {
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file://swap mnmP<<8C,
SortUtil.swap(data,pivotIndex,j); =$nB/K,8AX
.G+Pe'4a
int k=partition(data,i-1,j,data[j]); M@?xa/E64
SortUtil.swap(data,k,j); M#~Cc~oT
if((k-i)>1) quickSort(data,i,k-1); w:?oTuw
if((j-k)>1) quickSort(data,k+1,j); 'bo~%WA]n
X LL/4 )
} |!"2fI
/** L{(QpgHZ
* @param data #B:hPZM1
* @param i \ gLHi~
* @param j |b*?
qf
* @return ^4,a 8`
*/ )hk
private int partition(int[] data, int l, int r,int pivot) { tI7:5Cm
do{ Y=?yhAw
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); hi0R.V&
SortUtil.swap(data,l,r); L+CyQq
} rMU T_^
while(l SortUtil.swap(data,l,r); xfb]b2
return l; L2, 1Kt7
} z.Y$7bf)
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} Hd,p!_
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改进后的快速排序: {W]=~*w
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package org.rut.util.algorithm.support; cZT({uYGL
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import org.rut.util.algorithm.SortUtil; lWqrU1Sjl
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/** #/I[Jqf
* @author treeroot ]|sAK%/
* @since 2006-2-2 nv0]05.4
* @version 1.0 NMww>80
*/ vP!{",>
public class ImprovedQuickSort implements SortUtil.Sort { K^B%/T]d
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private static int MAX_STACK_SIZE=4096; Q" ,0F{'
private static int THRESHOLD=10;
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/* (non-Javadoc) ~t^eiyv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LrATSq@
*/ Ma+$g1$
public void sort(int[] data) { bks/`rIA
int[] stack=new int[MAX_STACK_SIZE]; "m ^'
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int top=-1; TEMw8@b
int pivot; G 2mX;
int pivotIndex,l,r; glDh([
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stack[++top]=0; T}4/0yR2
stack[++top]=data.length-1; F35#dIs`&
2^)1N>"g
while(top>0){ ZeEWp3vW
int j=stack[top--]; ^;Sy. W&`
int i=stack[top--]; z^GDJddG
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pivotIndex=(i+j)/2; UQ[B?jc
pivot=data[pivotIndex]; fm^@i;D
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SortUtil.swap(data,pivotIndex,j); #?XQ7Im
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file://partition P9S2?Q
l=i-1; }sx_Yj
r=j; hAm`NJMSO
do{ I8QjKI (
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l983vKr
SortUtil.swap(data,l,r); x ul]m*Z
} IXb}AxBf
while(l SortUtil.swap(data,l,r); =&},;VOh
SortUtil.swap(data,l,j); }=|!:kiE
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if((l-i)>THRESHOLD){ tqy@iEz+
stack[++top]=i; V13BB44
stack[++top]=l-1; **+e7k
} BbRBT@
if((j-l)>THRESHOLD){ Q6XRsFc
stack[++top]=l+1; a&k_=/X&
stack[++top]=j; lt_']QqU
} XfKo A0
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} TO-nD>
file://new InsertSort().sort(data); J!5v~<v?-
insertSort(data); P<Zh XN'
} lw :`M2P,
/** rvyrxw%[
* @param data NNF>Xa`9,
*/ M{$j
private void insertSort(int[] data) { )LdyC`S\c
int temp; .-JCwnP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z(ZiFPx2Z
} ?]rPRV
} VOr 1
} /RyR>G!
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} $-&BB(-{E&
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归并排序: A"aV'~>
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package org.rut.util.algorithm.support; Qjnd6uv{I
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import org.rut.util.algorithm.SortUtil; Hk7q{`:N
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/** k64."*X
* @author treeroot JMCW} bA
* @since 2006-2-2 qiZO _=0
* @version 1.0 NWd<+-pC6
*/ 4Td{;Y="yF
public class MergeSort implements SortUtil.Sort{ :aG#~-Q
5'Q|EIL
/* (non-Javadoc) .>(Q)"v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1RKW2RCaW_
*/ :0/q5_t
public void sort(int[] data) { < Z|Ep1W
int[] temp=new int[data.length]; oxj3[</'k
mergeSort(data,temp,0,data.length-1); a"av#Y
} i_kE^SSgm
0I{gJSK.,
private void mergeSort(int[] data,int[] temp,int l,int r){ xP=/N!,#
int mid=(l+r)/2; lKkN_ (/j
if(l==r) return ; S2>c#BQ
mergeSort(data,temp,l,mid); s!9dQ.
mergeSort(data,temp,mid+1,r); |8bq>01~
for(int i=l;i<=r;i++){ fgj^bcp-
temp=data; '<R>E:5
} {} Bf
int i1=l; uHIiH@S
int i2=mid+1; KIeT!kmDl
for(int cur=l;cur<=r;cur++){
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if(i1==mid+1) kSc{^-<R
data[cur]=temp[i2++]; ^ZM0c>ev=l
else if(i2>r) 2S8P}$mM
data[cur]=temp[i1++]; O,<IGO
else if(temp[i1] data[cur]=temp[i1++]; O'GG Ti]e
else vfB2XVc
data[cur]=temp[i2++]; KvQ,;A
} CAT.4GM
} azP+GM=i7
>23-
} efG6v
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改进后的归并排序: AkU<g
?%O3Oi Xz
package org.rut.util.algorithm.support; j$da8] !
QR">.k4QJ
import org.rut.util.algorithm.SortUtil; y{9~&r
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/** $^ 'aCU0C
* @author treeroot lZ&]|*>
* @since 2006-2-2 AOp/d(vx5i
* @version 1.0 y[@\j9Hq
*/ 93IFcmO.H@
public class ImprovedMergeSort implements SortUtil.Sort { (]*H[)F/
q4UA]+-*
private static final int THRESHOLD = 10; =N);v\ Q$!
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/* |KY EK|
* (non-Javadoc) "&Qctk`<P
* ?8,%LIQ?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <As9>5|%
*/ g`k?AM\
public void sort(int[] data) { a4gi,pz$]
int[] temp=new int[data.length]; ]ALc;lb-}
mergeSort(data,temp,0,data.length-1); rs=q!
P"u[
} QHBtWQgS
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private void mergeSort(int[] data, int[] temp, int l, int r) { E^ hHH?w+
int i, j, k; k#}g,0@
int mid = (l + r) / 2; ?hYqcT[%
if (l == r) !5}l&7:(MN
return; JIO$=+p
if ((mid - l) >= THRESHOLD) #(LfYw.P1V
mergeSort(data, temp, l, mid); O;[9_[
else "tS'b+SJ-S
insertSort(data, l, mid - l + 1); ZiFooA
if ((r - mid) > THRESHOLD) JM.XH7k
mergeSort(data, temp, mid + 1, r); 'rb'7=z5
else .r+hERcB
insertSort(data, mid + 1, r - mid); (IbW;bV
[O
",
for (i = l; i <= mid; i++) { 9^F2$+T[:
temp = data; 8iC:xcN3
} 2WvN2"f3
for (j = 1; j <= r - mid; j++) { w'7R4
temp[r - j + 1] = data[j + mid]; m+$ @'TbP
} MVCl.o
int a = temp[l]; EA<}[4#jS
int b = temp[r]; E{Pgf8
for (i = l, j = r, k = l; k <= r; k++) { ^4v*W;Q
if (a < b) { T_<BVM
data[k] = temp[i++]; _L.n,
a = temp; % 0:p)Z0
} else { 7yI@"c#O
data[k] = temp[j--]; ps:f=6m2
b = temp[j]; P`1EPF
} _DPOyR2
} %bb~Y"
} -qV{WZ Hp
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/** X7*`
* @param data fn{S
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* @param l J?:[$ C5
* @param i |f2A89
*/ YJ7V`Np
private void insertSort(int[] data, int start, int len) { `BZ&~vJ_
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |I[7,`C~
}
'3l$al:H^
} $<?X7n^
} @=]8^?$t
0
} KT*:F(4`
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堆排序: nw'-`*'rj
1@sM1WMX
package org.rut.util.algorithm.support; J_#R 87
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import org.rut.util.algorithm.SortUtil; @u4=e4eF`
? S=W&
/** Sj
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* @author treeroot Ln#a<Rx.E7
* @since 2006-2-2 ,i`h
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* @version 1.0 W,hWOO
*/ vrl[BPI
public class HeapSort implements SortUtil.Sort{ *ftC_v@p5
h!]"R<QQdu
/* (non-Javadoc) X.|Ygx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v1[_}N9f>H
*/ 0^ !Gib
public void sort(int[] data) { JSMPyj
MaxHeap h=new MaxHeap(); h%#_~IA:|
h.init(data); 4,eQW[;kk
for(int i=0;i h.remove(); _ptP[SV^j
System.arraycopy(h.queue,1,data,0,data.length); uVU`tDzd:
} udqge?Tz
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private static class MaxHeap{ CUmH,`hu
89eq[ |G_
void init(int[] data){ d;suACW
this.queue=new int[data.length+1]; 0my9l;X
for(int i=0;i queue[++size]=data; m^Lj+=Z"
fixUp(size); 6517Km 4-
} M[Y4_$k<-
} <4?*$
} ~enEZ
private int size=0; D,W\ gP/h%
hFb
fNB3
private int[] queue; Z(!pYhLq
s^C;>
public int get() { !QC<n/
return queue[1]; u35q,u=I
} 3B18dv,V
Q9y*:
public void remove() { wa3F
SortUtil.swap(queue,1,size--); t3F?>G#y
fixDown(1); nmE5]Pcg
} 0^<,(]!
file://fixdown ,w\ wQn>]K
private void fixDown(int k) { 6Dzs? P
int j; %O) Z
while ((j = k << 1) <= size) { af>3V( 7
if (j < size %26amp;%26amp; queue[j] j++; #vnT&FN0[
if (queue[k]>queue[j]) file://不用交换 {OxWcK\2@h
break; ^e9aD9
SortUtil.swap(queue,j,k); :0Te4UE;P7
k = j; Ee?;i<u
} (:} <xxl
} zHFTCL>"
private void fixUp(int k) { Wvr+y!F
while (k > 1) { $pu3Ig$^
int j = k >> 1; 4]BJ0+|mT
if (queue[j]>queue[k]) nP_=GI
break; x0x $ 9
SortUtil.swap(queue,j,k); kEAhTh&g*
k = j; zA{8C];~
} 3q~Fl=|.o
} F.KrZ3%4iB
{!K;`I[]v
} q) _r3
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} ]gP8?s|
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SortUtil: c^-YcGwa
xyV]?~7
package org.rut.util.algorithm; 9.8,q
DT? m/*
import org.rut.util.algorithm.support.BubbleSort; f'_S1\
import org.rut.util.algorithm.support.HeapSort; \!PV*%P
import org.rut.util.algorithm.support.ImprovedMergeSort; Jr?!Mh-
import org.rut.util.algorithm.support.ImprovedQuickSort; t,Q'S`eTU
import org.rut.util.algorithm.support.InsertSort; V4?Oc2mS
import org.rut.util.algorithm.support.MergeSort; hZF(/4Z2
import org.rut.util.algorithm.support.QuickSort; ,kE=TR.|
import org.rut.util.algorithm.support.SelectionSort; Tf l;7w.(A
import org.rut.util.algorithm.support.ShellSort; B! `\L!
3/tJDb5
/** q!2<=:f
* @author treeroot ;Uk!jQh
* @since 2006-2-2 AQn[*
* @version 1.0 E4m:1=Nd~]
*/ .;Z.F7{q
public class SortUtil { 5&%fkZ0
public final static int INSERT = 1; j];G*-iv{
public final static int BUBBLE = 2; [tN` :}?
public final static int SELECTION = 3; W"O-L
public final static int SHELL = 4; }bgo )<i
public final static int QUICK = 5; *. dKR
public final static int IMPROVED_QUICK = 6; (,TH~("{
public final static int MERGE = 7; | XLFV
public final static int IMPROVED_MERGE = 8; &<{}8/x8(
public final static int HEAP = 9; YAMfP8S
Xoi9d1fO
public static void sort(int[] data) { [Pqn3I[
sort(data, IMPROVED_QUICK); -7L
} !&0a<~Wi
private static String[] name={ )8]3kQffJ=
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" kpT>G$s~gy
}; &:#A+4&
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private static Sort[] impl=new Sort[]{ K051usm
new InsertSort(), ]j1
vbk
new BubbleSort(), i0i`k^bA
new SelectionSort(), yI4DVu.
new ShellSort(), !3?~#e{_
new QuickSort(), 6'vi68
new ImprovedQuickSort(), R}.3|0
new MergeSort(), 1O9$W?)Q
new ImprovedMergeSort(), ,#Ln/;
new HeapSort() F#^L9
}; tzmETRwG
H CuK
public static String toString(int algorithm){ um{e&5jk
return name[algorithm-1]; w?/f Z x
} 64b<0;~
ze$Y=<S
public static void sort(int[] data, int algorithm) { e9}8RHy1$
impl[algorithm-1].sort(data); W%H]Uyt
} iGQ n/Xdo
BWohMT
public static interface Sort { {)uU6z
{'
public void sort(int[] data); @oA0{&G{
} #\0TxG5'QA
d{l{P]nr
public static void swap(int[] data, int i, int j) { Jbkt'Z(&J
int temp = data; W\a!Q]pV
data = data[j]; Ba<#1p7_
data[j] = temp; YkVRl [
} @7]\y7D
} p&m
^IWD