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。 gG54:
插入排序: ~;-9X|
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package org.rut.util.algorithm.support; x}fn'iUnm
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import org.rut.util.algorithm.SortUtil; (7lBID4
/** 4yMW^:@
* @author treeroot $awi>#[
* @since 2006-2-2 \d.F82
* @version 1.0 l QPqcZd
*/ ]^"k8v/
public class InsertSort implements SortUtil.Sort{ "oJ(J{Jat
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/* (non-Javadoc) j'Y/ H5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ?4PQQd
public void sort(int[] data) { @%tXFizh
int temp; bggusK<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !J>A,D"-
} #?}6t~
} <v]9lw'
} r$)$n&j
#S
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} !MZw#=D`
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冒泡排序: RcY[rnI6
vg%QXaM
package org.rut.util.algorithm.support; v<rF'D2
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import org.rut.util.algorithm.SortUtil; X\GM/A
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/** <3
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* @author treeroot ryD%i"g<
* @since 2006-2-2 " mj^+u-
* @version 1.0 oC dGQ7G}
*/ i3V/`)iz
public class BubbleSort implements SortUtil.Sort{ +Takde%~
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/* (non-Javadoc) Zy$L rr!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r7z6___
*/ B#N7qoi
public void sort(int[] data) { NXoK@Y
int temp; 6TFo|z!C
for(int i=0;i for(int j=data.length-1;j>i;j--){ _,;%mK
if(data[j] SortUtil.swap(data,j,j-1); 9 pKm*n&
} e9@(/+
} }Jxq'B
} qb7^VIo%c
} r%MyR8'k]
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} Du_$C[
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选择排序: Y}1P~
D$pj#
package org.rut.util.algorithm.support; gA
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import org.rut.util.algorithm.SortUtil; K+ehr
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/** &+;uZ-x
* @author treeroot
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* @since 2006-2-2 QWhp:]}
* @version 1.0 &l^n4
*/ wXCyj+XB*
public class SelectionSort implements SortUtil.Sort { u8uW9 <
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/* ~I)uWo
* (non-Javadoc) ZQLB`n@
* =YoTyq\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sFx$>:$
*/ F?2FITi_V
public void sort(int[] data) { NKh,z&
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int temp; cju@W] !
for (int i = 0; i < data.length; i++) { ,)uPGe"y
int lowIndex = i; ?'LM7RE$X6
for (int j = data.length - 1; j > i; j--) { =tq7z =k
if (data[j] < data[lowIndex]) { R<j<.h
lowIndex = j; A:xb!=
2
} 2mOfsn d@
} ,lP7 ri
SortUtil.swap(data,i,lowIndex); VD4S_qx
} Ltg-w\?]
} ;_bq9x
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} "S|(4BUJ(
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Shell排序: r&/D~g\"|[
+DxifXtB
package org.rut.util.algorithm.support; ?:JdRnH \
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import org.rut.util.algorithm.SortUtil; &0i71!Oy
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/** gm}C\q9
* @author treeroot _we3jzMW
* @since 2006-2-2 K.r!?cfv
* @version 1.0 2}>go^#O/w
*/ Ta,u-!/I
public class ShellSort implements SortUtil.Sort{ -
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/* (non-Javadoc) &7lk2Q\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @V7;TJk
*/ XZ;*>(
public void sort(int[] data) { ^Y#@$c
for(int i=data.length/2;i>2;i/=2){ bQ
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for(int j=0;j insertSort(data,j,i); #<D@3ScC
} y K=S!7p\
} MQjG<O\
insertSort(data,0,1); L>i<dD{
} o<~-k,{5P
PlF89-
/** $)4GCP
* @param data G)4ZK#wz
* @param j vRq=m8
* @param i <tGI]@Nwk
*/ aViJ
private void insertSort(int[] data, int start, int inc) { `\nON
int temp; f&+XPd %
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i#Ne'q;T
} =I
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} t00\yb^vJ8
} |;X?">7NW
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} Xv`2hf
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快速排序: 1kbT@
5@GD} oAn6
package org.rut.util.algorithm.support; Fc34Y0_A
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import org.rut.util.algorithm.SortUtil; ~R"]LbeY
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1
/** Kx(76_XD
* @author treeroot /&S~+~]n
* @since 2006-2-2 r\4*\
* @version 1.0 GlXA-p<
*/ hr)+Pk
public class QuickSort implements SortUtil.Sort{ JUe K"|fA
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/* (non-Javadoc) &/J.0d-*``
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >C*?17\
*/ lGD%R'}
public void sort(int[] data) { .(TQ5/
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quickSort(data,0,data.length-1); $gj+v+%N
} SH@
private void quickSort(int[] data,int i,int j){ /Bg6z m
int pivotIndex=(i+j)/2; }1X11+/W
file://swap {ar5c&<
SortUtil.swap(data,pivotIndex,j); q\\8b{~
4Zv.[V]iOO
int k=partition(data,i-1,j,data[j]); /8P4%[\
SortUtil.swap(data,k,j); 7 K;'7
if((k-i)>1) quickSort(data,i,k-1); !q7;{/QM6
if((j-k)>1) quickSort(data,k+1,j); wHBHkz
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} \Y>#^b?
/** zR3lX}g
* @param data kz$6}&uk
* @param i z$I[kR%I{
* @param j $DABR
* @return P ],)
*/ onWYT} c{
private int partition(int[] data, int l, int r,int pivot) { R"9oMaY
do{ $ly#zQR
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 36x5 q 1
SortUtil.swap(data,l,r); a6#{2q
} {LMS~nx
while(l SortUtil.swap(data,l,r); +[ZMrTW!0C
return l; )$lSG}WD
} 8a":[Q[
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} Y7b,td1
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改进后的快速排序: ?}1JL6mF{
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package org.rut.util.algorithm.support; \ eyQo>(
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import org.rut.util.algorithm.SortUtil; =@ L5
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/** &Gy'AUz-
* @author treeroot mNBpb}
* @since 2006-2-2 +*:x#$phx
* @version 1.0
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*/ tx|"v|&e2
public class ImprovedQuickSort implements SortUtil.Sort { 7Y @=x#
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private static int MAX_STACK_SIZE=4096; n/-p;#R
private static int THRESHOLD=10; Bgo"JNM
/* (non-Javadoc) S#0|#Z5qD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eqUn8<<s
*/ *`pec3"
public void sort(int[] data) { Ph!KL\
int[] stack=new int[MAX_STACK_SIZE]; [r~rIb%Zj
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int top=-1; 1
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int pivot; |+4E
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int pivotIndex,l,r; QF.wtMGF&
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stack[++top]=0; w4<u@L
stack[++top]=data.length-1; 2AdHj&XE
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while(top>0){ WE Svkm;
int j=stack[top--]; >`,#%MH#
int i=stack[top--]; ReGO9}
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pivotIndex=(i+j)/2; as!|8JE`
pivot=data[pivotIndex]; ;KjMZ(Iil1
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SortUtil.swap(data,pivotIndex,j); n4d(`
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file://partition C7*Yg$`{
l=i-1; r{:la56Xd
r=j; :#!F 7u
do{ MT#[ -M\
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a~N)qYL:
SortUtil.swap(data,l,r); <812V8<!
} @ :
while(l SortUtil.swap(data,l,r); v'Py[[R
SortUtil.swap(data,l,j); VT~
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if((l-i)>THRESHOLD){ MvjwP?J]
stack[++top]=i; []fj~hj
stack[++top]=l-1; o _,$`nEJ
} wCE fR!i
if((j-l)>THRESHOLD){ ah@GSu;7
stack[++top]=l+1; !\|@{UJk/
stack[++top]=j; P9HPr2
} "@'9+$i6
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s
} x: wq"X
file://new InsertSort().sort(data); <HX-qNA?
insertSort(data); 6nk|*HPz
} 9mtC"M<
/** { dxyBDK
* @param data =81Xt1,
*/ I3=Sc^zz&V
private void insertSort(int[] data) { JU`'?b
int temp; |`9zE]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I)4|?tb?
} Qz90 mb
} C4d1*IQk
} (HgdmN%
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} -kS5mR
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归并排序: :z5Ibas:
C2%3+
package org.rut.util.algorithm.support; x-k/rZ
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import org.rut.util.algorithm.SortUtil; !Dn1pjxc
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/** *wl_8Sis}
* @author treeroot yq^$H^_O
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* @since 2006-2-2 )n61IqrW
* @version 1.0 3JO:n6
*/ VH*(>^OfF
public class MergeSort implements SortUtil.Sort{ Z?[J_[ZtR3
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/* (non-Javadoc) Z.f<6<gF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "[Lp-4A\
*/ s0'U[]
public void sort(int[] data) { C/#/F#C
int[] temp=new int[data.length]; D#(L@{vC
mergeSort(data,temp,0,data.length-1); u9%:2$[
} 1KEPD@0oxx
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private void mergeSort(int[] data,int[] temp,int l,int r){ gU$3Y#R
int mid=(l+r)/2; g4932_tC
if(l==r) return ; l )eaIOyk
mergeSort(data,temp,l,mid); G4]``
mergeSort(data,temp,mid+1,r); F=lj$?4{
for(int i=l;i<=r;i++){ -Euy5Y
temp=data; <AXYqH7%A
} .h }D%Qa
int i1=l; }6(:OB?
int i2=mid+1; :\cJvm
for(int cur=l;cur<=r;cur++){ &Vm[5XW
if(i1==mid+1) ucO]&'hu:
data[cur]=temp[i2++]; 7m$/.\5
else if(i2>r) ]5L3[A4Vu
data[cur]=temp[i1++]; :"^$7
else if(temp[i1] data[cur]=temp[i1++]; Np)!23 "
else >l[N]CQ
data[cur]=temp[i2++]; YRXe j
} L~zet-3UNf
} 9dv~WtH>5
9t gkAU`
} r
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改进后的归并排序: <>GyG-q
1 ErYob.p
package org.rut.util.algorithm.support; /otgFQ_
vUNE!j
import org.rut.util.algorithm.SortUtil; @
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/** }9dgm[C[b
* @author treeroot O@$i
* @since 2006-2-2 u?i1n=Ne
* @version 1.0 Sy55w={
*/ .})8gL7V
public class ImprovedMergeSort implements SortUtil.Sort { /J:j'6
aV.<<OS
private static final int THRESHOLD = 10; t~M_NEPxV
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/* F'!}$oT"
* (non-Javadoc) 4#uoPkLK
* K}@:>;*9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9p<l}h7g
*/ Gz:a1-x
public void sort(int[] data) { :|TBsd|/x
int[] temp=new int[data.length]; Q[^d{e*l
mergeSort(data,temp,0,data.length-1); 8Sa<I.l
} <Th.}=
V7<}
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private void mergeSort(int[] data, int[] temp, int l, int r) { FE.:h'^h
int i, j, k; ^EZoP:x(oE
int mid = (l + r) / 2; c`cPGEv
if (l == r) 1^mO"nX
return; v>6r|{
if ((mid - l) >= THRESHOLD) xe'*%3-v)
mergeSort(data, temp, l, mid); 3ly|y{M",
else d!cx%[
insertSort(data, l, mid - l + 1);
b%6_LK[
if ((r - mid) > THRESHOLD) Rh|&{Tf
mergeSort(data, temp, mid + 1, r); coBxZyM 1}
else ;S/fe(C
insertSort(data, mid + 1, r - mid); P=.W.oS
tQ"PCm
for (i = l; i <= mid; i++) { fsu'W]f
temp = data; y!j1xnzki
} r QF%;
for (j = 1; j <= r - mid; j++) { Im2g2]
temp[r - j + 1] = data[j + mid]; dJk.J9Z
} b1+Nm
int a = temp[l]; G7u7x?E:B`
int b = temp[r]; \VW.>@s~
for (i = l, j = r, k = l; k <= r; k++) { wp$=lU{B
if (a < b) { e2>gQ p/
data[k] = temp[i++]; l\H9Io3
a = temp; z
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} else { \|kU{d0
data[k] = temp[j--]; Ty>`r n
b = temp[j]; z[B7k%}
} n']@Spm
} HRk+2'wjAz
} i^yQ;
2-
) E5ax~
/** 3=z'Ih`
* @param data a83o(9
* @param l HG3jmI+u>
* @param i v+Hu=RZE
*/ 7kO
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private void insertSort(int[] data, int start, int len) { 'O
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6;ICX2Wq'
} L_/.b%0)
} F4*f_lP
} #+XKfumLk
} w$1.h'2
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堆排序: aXwFQ,
FJ/kumq
package org.rut.util.algorithm.support; "w N
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import org.rut.util.algorithm.SortUtil; @D%VV=N~[
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/** X)\t=><<
* @author treeroot P'zA=Rd&~>
* @since 2006-2-2 pDW .Pav
* @version 1.0 (xMAo;s_
*/ o;}o"-s
public class HeapSort implements SortUtil.Sort{ e%P+KX
.){e7U6b{
/* (non-Javadoc) =]_d pE EQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K7t&fDI
*/ %8}WX@SB
public void sort(int[] data) { 9;E%U2T7
MaxHeap h=new MaxHeap(); O,F]\
h.init(data); n/9 LRZD|w
for(int i=0;i h.remove(); N0y;PVAGu
System.arraycopy(h.queue,1,data,0,data.length); =yk Rki
} t*Z .e.q+
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private static class MaxHeap{ @{J!6YGh
i Q]T+}nn_
void init(int[] data){ C:'WX*W
this.queue=new int[data.length+1]; _~X8/p/Qh
for(int i=0;i queue[++size]=data; 6=Y3(#Ddt
fixUp(size); T[Z <bW~0
} `l[6rf_.
} bqw/O`*wfN
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private int size=0; i#pjv'C
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private int[] queue; !#,-
@1pW!AdN
public int get() { LW83Y/7
return queue[1]; JEK%yMj
} ^F0k2pB
j:rs+1bc
public void remove() { ~.PPf/
Z8]
SortUtil.swap(queue,1,size--); t7C!}'g&'
fixDown(1); zumR( <l
} dUsJv
file://fixdown sUyCAKebRr
private void fixDown(int k) { `'G),{ j
int j; Q>SPV8s
while ((j = k << 1) <= size) { ?{@!!te@3v
if (j < size %26amp;%26amp; queue[j] j++; Y5h)l<P>B
if (queue[k]>queue[j]) file://不用交换 ?;AL F
break; ~WYE"(
SortUtil.swap(queue,j,k); J[&
7,}
k = j; ]zhq.O
>2{
} 4AJu2Hp
} *hk{q/*Qw
private void fixUp(int k) { D*d 3w
while (k > 1) { =B/s HN
int j = k >> 1; JhMrm%
if (queue[j]>queue[k]) ;H m-,W
break; VuO)
SortUtil.swap(queue,j,k); $ sA~p_]
k = j; O9qKwn;q(
} k"DQbUy0L
} o3TBRn,
XqE55Jclp
} )'K!)?&d
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} AT8B!m
2t]! {L
SortUtil: 8eS@<[[F#
st'?3A
package org.rut.util.algorithm; -pU\"$nuxH
{*ko=77$*
import org.rut.util.algorithm.support.BubbleSort; @0/@p"j
import org.rut.util.algorithm.support.HeapSort; QX.F1T2e?
import org.rut.util.algorithm.support.ImprovedMergeSort; qN`]*baS
import org.rut.util.algorithm.support.ImprovedQuickSort; (7Ca\H3$
import org.rut.util.algorithm.support.InsertSort; <4!&iU+;
import org.rut.util.algorithm.support.MergeSort; *]>OCGsr
import org.rut.util.algorithm.support.QuickSort; qG2\`+v
import org.rut.util.algorithm.support.SelectionSort; x9&tlKKxf
import org.rut.util.algorithm.support.ShellSort; UQji7K }
cVP49r}}v
/** qI V`zZc
* @author treeroot I8-&.RE
* @since 2006-2-2 v-r[~
* @version 1.0 RfKxwo|M<
*/ {L2Gb(YLW
public class SortUtil { (?&_6B.*
public final static int INSERT = 1; <1'X)n&Kw$
public final static int BUBBLE = 2; Kz*AzB
public final static int SELECTION = 3; Kj<<&_B.H
public final static int SHELL = 4; 1Sc~Vb|>
public final static int QUICK = 5; 7N~qg 7&
public final static int IMPROVED_QUICK = 6; z_,]fd=o
public final static int MERGE = 7; Fp|rMq
public final static int IMPROVED_MERGE = 8; cwW~ *90#
public final static int HEAP = 9; 7i|hlk;
yg[Oy#^
public static void sort(int[] data) { hDkqEkq1R
sort(data, IMPROVED_QUICK); '`goy%Wd
} aab4c^Ms=
private static String[] name={ ,IVr4#w0=
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vM4`u5
}; zH\;pmWiN9
u%IKM\
private static Sort[] impl=new Sort[]{ 7rDRu]
new InsertSort(), 4z3$
new BubbleSort(), _ L:w;Oy9T
new SelectionSort(), y@8399;l
new ShellSort(), {^19.F
new QuickSort(), Sdu@!<?B
new ImprovedQuickSort(), vheAh`u^&
new MergeSort(), q2U"k
new ImprovedMergeSort(), {R8P $
new HeapSort() ZwrYss
}; H><mcah
#&8pp8wd,}
public static String toString(int algorithm){ Q@.9wEAJ
return name[algorithm-1]; @U.}Ei
} c"&!=@
68br
public static void sort(int[] data, int algorithm) { 4y}a,
impl[algorithm-1].sort(data); jxOVH+?l%
} -Aym+N9
r_<i*l.
public static interface Sort { 3UtXxL&L`
public void sort(int[] data); KZ/^gR\d
} kX .1#%Ex
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public static void swap(int[] data, int i, int j) { Oy`\8*Uy__
int temp = data; <^c0bY1
data = data[j]; Uo)<_nG
data[j] = temp; UlZ)|Ya<M
} 5<8>G?Y
} LK}eU,m=