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。 M\5|
插入排序: bC1G5`v_D
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package org.rut.util.algorithm.support; aYb97}kI
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import org.rut.util.algorithm.SortUtil; G_S>{<[
/** n@p@@
* @author treeroot E6 -*2U)k+
* @since 2006-2-2 uI/
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* @version 1.0 O.( 2
*/ \>-
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public class InsertSort implements SortUtil.Sort{ kt978qfk
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/* (non-Javadoc) `z0q:ME
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y-a
*/ K8_v5
public void sort(int[] data) { 6~x'~T
int temp; ^D$|$=|DH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6D`n^ uoP
} CC`_e^~y=F
} XAU%B-l:
} M>]A!W=
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} *kl :/#
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冒泡排序: Ptv'.<-
5o dT\>Sn
package org.rut.util.algorithm.support; LnI
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import org.rut.util.algorithm.SortUtil; EyE#x_A
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/** akzGJ3g
* @author treeroot Z,.Hz\y1D
* @since 2006-2-2 pi?MAE*f
* @version 1.0 [7FG;}lB-
*/ 7#0buXBg
public class BubbleSort implements SortUtil.Sort{ c>B1cR
3c=kYcj
/* (non-Javadoc) :eVZ5?F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t~->&Ja
*/ &Vz$0{d5
public void sort(int[] data) { [8i)/5D4
int temp; h^yqrDyJ
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'p&,'+x
if(data[j] SortUtil.swap(data,j,j-1); [X.bR$>
} g"evnp
} E^axLp>(I
} %L+q:naZe
} ?BnU0R_r]
}'$PYAf6
} "+F'WCJ-(*
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选择排序: CJ
:V %|
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package org.rut.util.algorithm.support; g"! (@]L!@
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import org.rut.util.algorithm.SortUtil; TN2Ln?[xU
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/** 5I622d
* @author treeroot 08`|C)Z!
* @since 2006-2-2 AI-*5[w#A
* @version 1.0 0ns\:2)cEB
*/ +WH\,E
public class SelectionSort implements SortUtil.Sort { Iux3f+H
FlBhCZ|^
/* !GqFX+!Ju
* (non-Javadoc) CJ IuMsZ
* 8D='N`cN+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fjh|V9H
*/ nI\6aG?`
public void sort(int[] data) { D0D=;k
int temp; 9P?0D
for (int i = 0; i < data.length; i++) { 4Z"}W!A
int lowIndex = i; 3e_tT8
for (int j = data.length - 1; j > i; j--) { UerbNz|
if (data[j] < data[lowIndex]) { y6XOq>
lowIndex = j; B*(]T|ff<
} qO#3{kW
} i5VZ,E^E
SortUtil.swap(data,i,lowIndex); b3ohTmy4(
} #De>EQ%
} Nd~B$venh
p}1i[//S
} uU H4vUa
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Shell排序: hsC T:1i
XUqorE
package org.rut.util.algorithm.support; 0a~t
8 #_pkVQw:
import org.rut.util.algorithm.SortUtil; 9`tK9
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/** sh<Q2X
* @author treeroot d54iZ`
* @since 2006-2-2 5 ~Wg=u<6
* @version 1.0 k# [!; <
*/ 4Yj1Etq.E
public class ShellSort implements SortUtil.Sort{ Q_5l.M/9]
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/* (non-Javadoc) ^/f~\#R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SyWZOE%p
*/ Ds9)e&yYrb
public void sort(int[] data) { "-~7lY%
for(int i=data.length/2;i>2;i/=2){ ;Shu
for(int j=0;j insertSort(data,j,i); L)e"qC_-
} 5\ mRH
} 2~4:rEPJ:
insertSort(data,0,1); akj<*,
} 3BFOZV+
e &6 %
/** dSM\:/t
* @param data
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* @param j @@65t'3S
* @param i $O"ss>8Se
*/ rB>ge]$.
private void insertSort(int[] data, int start, int inc) { }w0pi
int temp;
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T5XXC1+
} 8wU$kK
} j*{0<hZb}
} ?uWUs )9
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} +|A`~\@N
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快速排序: BU`X_Z1)
':*H#}Br-#
package org.rut.util.algorithm.support; \J'}CX*aQ
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import org.rut.util.algorithm.SortUtil; n]%-2`}(
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/** }EK{UM9y
* @author treeroot '&IGdB I
* @since 2006-2-2 RSX27fb4
* @version 1.0 x#1Fi$.
*/ PR:k--)D
public class QuickSort implements SortUtil.Sort{ %OQdUH4x
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/* (non-Javadoc) #{i*9'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bf{u:TCK
*/ t7=D$ua
public void sort(int[] data) { CPz<iU
quickSort(data,0,data.length-1); 8$( I! ;
} JEjxY&
private void quickSort(int[] data,int i,int j){ -/f$s1
int pivotIndex=(i+j)/2; -TUJ"ep]QJ
file://swap F};R
SortUtil.swap(data,pivotIndex,j); x,B] J4
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int k=partition(data,i-1,j,data[j]); 7KC>?F
SortUtil.swap(data,k,j); AuNUW0/
7
if((k-i)>1) quickSort(data,i,k-1); H 0l1=y
if((j-k)>1) quickSort(data,k+1,j); 4Aj~mA
C'6I< YX
} 7|,L{~
/** sd%j&Su#4
* @param data jJ$\ WUQ.
* @param i 0 R6:3fV6R
* @param j zdN[Uc+1Bd
* @return 4 m:h&^`N
*/ p2vN=[g9)
private int partition(int[] data, int l, int r,int pivot) { mU5Ox4>&9
do{ @MSmg3&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *EWWN?d
SortUtil.swap(data,l,r); ;1k&}v&
} Exb64n-_=
while(l SortUtil.swap(data,l,r); 7;jD>wp9D
return l; z8\YMr6o
} (< +A w7
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} $/wm k7T
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改进后的快速排序: ! M^O\C)
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package org.rut.util.algorithm.support; t2[/eM.G
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import org.rut.util.algorithm.SortUtil; D<WnPLA$g
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/** M(X
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* @author treeroot B;k'J:-"
* @since 2006-2-2 __=53]jGE
* @version 1.0 $1yy;IyR
*/ ifDWN*k6
public class ImprovedQuickSort implements SortUtil.Sort { 1 Pk+zBJ$
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private static int MAX_STACK_SIZE=4096; \.L jA_
private static int THRESHOLD=10; g p:0 Y
/* (non-Javadoc) }3
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1K Vit{
*/ VZ9 p "
public void sort(int[] data) { ng}C$d . I
int[] stack=new int[MAX_STACK_SIZE]; ,rMf;/[
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int top=-1; |] 7c&`
int pivot; t^01@ejM+
int pivotIndex,l,r; :-?ZU4)
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stack[++top]=0; En\@d@j<u
stack[++top]=data.length-1; Ci`o;KVj
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while(top>0){ Fm`*j/rq
int j=stack[top--]; |Y3w6 !$
int i=stack[top--]; od=hCQ1>
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pivotIndex=(i+j)/2; V0;"Qa@q
pivot=data[pivotIndex]; n]g"H
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SortUtil.swap(data,pivotIndex,j); iT'doF
;W-
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file://partition 6kAAdy}ck
l=i-1; z/\OtYz
r=j; i:s=
do{ ?t'V5$k\
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #D9.A7fCc5
SortUtil.swap(data,l,r); %9cT#9!7
} cKTjQJ#
while(l SortUtil.swap(data,l,r); wO]e%BTO
SortUtil.swap(data,l,j); TtkHMPlm_
KElEGW
if((l-i)>THRESHOLD){ oJA_"xp
stack[++top]=i; t4oD> =,92
stack[++top]=l-1; +u|"q+p
} LK} g<!o(
if((j-l)>THRESHOLD){ YE`Y t
stack[++top]=l+1; SJ]6_4=y*
stack[++top]=j; jL-2
}XrA
}
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} Lg<h54X
file://new InsertSort().sort(data); +,,(8=5g
insertSort(data); r;{$x
} %SC Jmn2
/**
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* @param data ].Yz
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*/ Erw1y,mF
private void insertSort(int[] data) { X):7#x@uy
int temp; NVRzthg%c_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sSU|N;"Y
} DKf(igw
} sJZ2e6?n
} *Z#OfB4}
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} hJ(vDv%
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归并排序: M{ncWq*_j
jJIP $
package org.rut.util.algorithm.support; X\`']\l
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import org.rut.util.algorithm.SortUtil; &{e ]S!D
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/** lU doMm
* @author treeroot <8}FsRr;J
* @since 2006-2-2 F` 7v
* @version 1.0 <\O+
*/ P<IDb%W
public class MergeSort implements SortUtil.Sort{ f- (i%
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fJlNxdVr
*/ b*Y Wd3
public void sort(int[] data) { sQ`G'<!
int[] temp=new int[data.length]; y@!M<#SEzG
mergeSort(data,temp,0,data.length-1); U>lf-iI2B
} F
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private void mergeSort(int[] data,int[] temp,int l,int r){ O2 >c|=#
int mid=(l+r)/2; E[t0b5h
if(l==r) return ; Imv#7{ndq
mergeSort(data,temp,l,mid); ir<e^a
mergeSort(data,temp,mid+1,r); |OJWQU![by
for(int i=l;i<=r;i++){ b=r 3WkB6
temp=data; J$51z
} U5kKT.M
int i1=l; =dPokLXn
int i2=mid+1; +4-T_m/W/
for(int cur=l;cur<=r;cur++){ @e<(o
UE
if(i1==mid+1) Qn8xe,
data[cur]=temp[i2++]; _CHzwNU
else if(i2>r) Y5tyFi#w[
data[cur]=temp[i1++]; e4` L8
else if(temp[i1] data[cur]=temp[i1++]; :m<&Ff}
else ^m%#1Zd
data[cur]=temp[i2++]; T^7Cv{[
} R1H^CJ=v0
} aG]>{(~cL
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} 14 & KE3`
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改进后的归并排序: d#v@NuO6
h
jn5xYKv
package org.rut.util.algorithm.support; VVDN3
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import org.rut.util.algorithm.SortUtil; 1x|3|snz)
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/**
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* @author treeroot ."+lij=56
* @since 2006-2-2 m'NAM%$}J
* @version 1.0 ) bFl-
*/ es*$/A
public class ImprovedMergeSort implements SortUtil.Sort { n- 2X?<_Z
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private static final int THRESHOLD = 10; nW)+-Wxq
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/* w~u{"E$
* (non-Javadoc) 4Et(3[P71
* 'V7LL1K^>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !ekByD
*/ &DMC\R* j
public void sort(int[] data) { kxhsDD$@p
int[] temp=new int[data.length]; K[y")ooE<j
mergeSort(data,temp,0,data.length-1); {\(G^B*\
} M )ET1ZM
NwF"Zh5eMW
private void mergeSort(int[] data, int[] temp, int l, int r) { tL OGj?/r
int i, j, k; Qbv@}[f
int mid = (l + r) / 2; LWM<[8wJ4
if (l == r) y[XD=j
return; jOV6%
if ((mid - l) >= THRESHOLD) MZz9R*_VS
mergeSort(data, temp, l, mid); &|XgWZS5
else "IU}>y>J
insertSort(data, l, mid - l + 1); B!Wp=9)G
if ((r - mid) > THRESHOLD) Ixn|BCi60A
mergeSort(data, temp, mid + 1, r); %AO6=
else ^# $IoW
insertSort(data, mid + 1, r - mid); STnM Bz7
TAUl{??,
for (i = l; i <= mid; i++) { iTinZ!Ut
temp = data; MUl`0H"tR
} J920A^)j!
for (j = 1; j <= r - mid; j++) { )(]rUJ~+~A
temp[r - j + 1] = data[j + mid]; %d+Fq=<
} Z@euO~e~
int a = temp[l]; >3/mV<g f
int b = temp[r]; wK2$hsque
for (i = l, j = r, k = l; k <= r; k++) { ^P9mJ:
if (a < b) { eA1g}ipm
data[k] = temp[i++]; Qp<*or@
a = temp; _9=87u0
} else { >l 0aME@-0
data[k] = temp[j--]; 1T#-1n%[k(
b = temp[j]; zCJ"O9G<V
} gqv+|:#
} 4vL\t
uoz
} }`L;.9
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/** p^Ey6,!8]D
* @param data h~Ir=JV
* @param l Ct `)R
* @param i F2zo
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*/ 5{yg
private void insertSort(int[] data, int start, int len) { B-LV/WJ_
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C5(XZscq
} eM!Oc$C8[
} L<dh\5#p9Y
} 9 5!xJdq
} JPTLh{/
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堆排序: C)m@/w
Lf9s'o}.R
package org.rut.util.algorithm.support; M+")*Opq
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import org.rut.util.algorithm.SortUtil; GdC=>\]
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/** fUvXb>f,
* @author treeroot yE
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* @since 2006-2-2 *As"U99(
* @version 1.0 -5e8m4*
*/ R}(Rv3>Xx
public class HeapSort implements SortUtil.Sort{ v "2A?
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/* (non-Javadoc) \=RV?mI3?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Bgj.?l
*/ [6K[P3UZx
public void sort(int[] data) { x%)oL:ue
MaxHeap h=new MaxHeap(); M%jR`qVFg.
h.init(data); }cUO+)!Y
for(int i=0;i h.remove(); @ebY_*
System.arraycopy(h.queue,1,data,0,data.length); _$A?
} ;]R5:LbXS
CNV^,`FX
private static class MaxHeap{ , MqoX-+
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void init(int[] data){ YpZuAJm<2_
this.queue=new int[data.length+1];
9Pvv6WyKy
for(int i=0;i queue[++size]=data; Jl\U~i
fixUp(size); NHU5JSlB
} !`H!!Kg0L
} [fwk[qFa
guCCu2OTA%
private int size=0; ?Z!R
BC#`S&R
private int[] queue; yz>S($u
\u6.*w5TI
public int get() { <2O#!bX1
return queue[1]; ',Z]w;D!G
} `o{_+Li9
wKcuIc$
public void remove() { ?]*"S{Cq v
SortUtil.swap(queue,1,size--); .LM|@OeaD!
fixDown(1); \ %xku:
} mDt!b6N/
file://fixdown /ZL6gRRA|
private void fixDown(int k) { 4K~>
int j; 2.{zfr
while ((j = k << 1) <= size) { ]T40VGJ:h
if (j < size %26amp;%26amp; queue[j] j++; y9T5
if (queue[k]>queue[j]) file://不用交换 h0x'QiCc
break; xqDz*V/mD
SortUtil.swap(queue,j,k); vEE\{1
k = j; M`iE'x
} r0OP !u
} jMX+uYx M
private void fixUp(int k) { ^IvQdVB
while (k > 1) { h`v T[u~l
int j = k >> 1; %<|<%~l&
if (queue[j]>queue[k]) [k%u$
break; 8B "^}y\0
SortUtil.swap(queue,j,k); sA+K?_
k = j; 0Bkc93
} oFzmH!&ED
} }0/l48G
vXM{)
} ^P.U_2&
sw:a(o&$
} ~XXNzz]?
j5smmtM`s
SortUtil: #N"QTD|i
,t*H: *
package org.rut.util.algorithm; ]XX>h~0
150x$~{/
import org.rut.util.algorithm.support.BubbleSort; zTq"kxn'
import org.rut.util.algorithm.support.HeapSort; K|D1
import org.rut.util.algorithm.support.ImprovedMergeSort; Y!ypG-
import org.rut.util.algorithm.support.ImprovedQuickSort; '!MKZKer
import org.rut.util.algorithm.support.InsertSort; #Hl?R5
import org.rut.util.algorithm.support.MergeSort; >C5u>@%9O
import org.rut.util.algorithm.support.QuickSort; VHLNJnA
import org.rut.util.algorithm.support.SelectionSort; kf95 )iLo
import org.rut.util.algorithm.support.ShellSort; JPZH%#E(
|WT]s B0Eq
/** `0+-:sXZ6
* @author treeroot `O%O[
* @since 2006-2-2 jnM}N:v
* @version 1.0 iJKGzHvS
*/ g">^#^hBE
public class SortUtil { Vhe$vH
public final static int INSERT = 1; <1QXZfQ"
public final static int BUBBLE = 2; alsD TQ'
public final static int SELECTION = 3; 0<f.r~
public final static int SHELL = 4; HHs!6`R$0c
public final static int QUICK = 5; iG=Di)O
public final static int IMPROVED_QUICK = 6; 4#t-?5"
public final static int MERGE = 7; {([`[7B>a<
public final static int IMPROVED_MERGE = 8; >4+KEK
public final static int HEAP = 9; &xt
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public static void sort(int[] data) { i
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sort(data, IMPROVED_QUICK); b0x%#trA{
}
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private static String[] name={ e3[Q6d&|
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8 0o'=E}"
}; =)w#?DGpj
);n/G
private static Sort[] impl=new Sort[]{ 3kwkU
new InsertSort(), Tv
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new BubbleSort(), P>`|.@
new SelectionSort(), 9E[==2TO
new ShellSort(), O*W<za;
new QuickSort(), |TR
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new ImprovedQuickSort(), Y;
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new MergeSort(), hp2$[p6O
new ImprovedMergeSort(), d..JW{
new HeapSort() ?|\wJrM ]
}; #ZP;] W
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public static String toString(int algorithm){ [Q/kNK
return name[algorithm-1]; } .<(L
} VC%.u.< F
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public static void sort(int[] data, int algorithm) { f"zmN G'
impl[algorithm-1].sort(data); "{Y6.)x
} <vD(,||
%hdjQIH
public static interface Sort { :)&vf<JL
public void sort(int[] data); hr hj4
} ~03MH'
1xh7KBr,
public static void swap(int[] data, int i, int j) { eg1F[~YL/
int temp = data; .*.eY?,V
data = data[j]; h ^s8LE3
data[j] = temp; _-9cGm v
} t*u#4I1
} SQ/HZ