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。 uX1{K%^<TW
插入排序: 6W;`}'ap
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package org.rut.util.algorithm.support; Hbu
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import org.rut.util.algorithm.SortUtil; 'S#^70kt
/** n2[h`zm1{B
* @author treeroot 2IkyC`
* @since 2006-2-2 }ZiJHj'<
* @version 1.0 eV;nTj
*/ Q yQ[H
public class InsertSort implements SortUtil.Sort{ \y7Gi}nI
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/* (non-Javadoc) N7X(gh2h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,hT**(W
*/ ;2sP3!*
public void sort(int[] data) { KWi|7z(L=
int temp; % S>6Q^B
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C 8d9(u
} PdRDUG{Jy
} L,,*8
} rQpQqBu
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} jD6T2K7i
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冒泡排序: 'S=eW_ 0/
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package org.rut.util.algorithm.support; _C'VC#Sy
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import org.rut.util.algorithm.SortUtil; /}CAd
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/** XuU>.T$] c
* @author treeroot xa{.hp?
* @since 2006-2-2 lhBAT%U\
* @version 1.0 D>-Pv-f/
*/ vrvi]
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public class BubbleSort implements SortUtil.Sort{ a5w E{K
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/* (non-Javadoc) OE}c$!@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,wyEo>>4)
*/ wDBU+Z
public void sort(int[] data) { m?;/H
int temp; b%VZPKA;
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,}Im^~5
if(data[j] SortUtil.swap(data,j,j-1); |n(b>.X
} #!r>3W&
} FIQHs"#T
} CXi:?6OG
} f\Q_]%^W
)|Ka'\xr
} I3}I7oc_
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选择排序: aq(i^d
Kzwe36O;?
package org.rut.util.algorithm.support; yv$hIU2X
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import org.rut.util.algorithm.SortUtil; G^/8^Zi
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/** C7&L9k~jf
* @author treeroot &.Yu%=}
* @since 2006-2-2 #X?E#^6?E
* @version 1.0 /d$kz&aIV
*/ N4WX}
public class SelectionSort implements SortUtil.Sort { A 0;ng2&
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/* xi)M8\K
* (non-Javadoc) 1XHE:0!dQ
* ?|n @%'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wV4MP1c$
*/ Nfmr5MU_
public void sort(int[] data) { TEC#owz
int temp; }rWg']
for (int i = 0; i < data.length; i++) { DMKtTt[}
int lowIndex = i; JDOn`7!w
for (int j = data.length - 1; j > i; j--) { Z)}2bJwA
if (data[j] < data[lowIndex]) { 0}g~69Z1=
lowIndex = j; T?7++mcA
} t\n'Kuk`
} 2>Qy*
SortUtil.swap(data,i,lowIndex); [X@JH6U
r
} DJ!pZUO{
} Pup%lO`.0
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} 6ywOL'OBM
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Shell排序:
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Kk
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package org.rut.util.algorithm.support; !d95gq<=>
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import org.rut.util.algorithm.SortUtil; 5wv7]F<
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/** =RofC9,
* @author treeroot mRC
* @since 2006-2-2 Ejyo
oO45
* @version 1.0 n6C!5zq7U
*/ 9aKO||i,
public class ShellSort implements SortUtil.Sort{ /2$d'e
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/* (non-Javadoc) pLMaXX~4_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LQ||7>{eX
*/ gYmO4/c,
public void sort(int[] data) { -Q%Pg<Q-#
for(int i=data.length/2;i>2;i/=2){ SES-a Mi3
for(int j=0;j insertSort(data,j,i); Na+h+wD.D
} !y$+RA7\
} "2PT]!
insertSort(data,0,1); hsYv=Tw3C
} b]N&4t
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/** nB4+*=$E+-
* @param data #jPn7
* @param j caV DV
* @param i OLqynY
*/ ^szi[Cj
private void insertSort(int[] data, int start, int inc) { lZ)
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int temp; U7-*]i k
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f#gV>.P;h\
} 2_)gJ_kP
} @H}Hjg_>m
} ? ^`fPH=
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} r5NH*\Q
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快速排序: BW"24JhF"
x]t$Zb/Uxa
package org.rut.util.algorithm.support; v'r)d-T
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import org.rut.util.algorithm.SortUtil; (,cG+3r]
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/** :Vw{ lB
* @author treeroot o3h>)4
* @since 2006-2-2 'p[B`Ft3F
* @version 1.0 \[ 4y
*/ =uR3|U(.|u
public class QuickSort implements SortUtil.Sort{ (]zi;
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/* (non-Javadoc) @0 [^SU?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dd:^ {
*/ rCb#E}
public void sort(int[] data) { (D{J|
quickSort(data,0,data.length-1); z:u)@>6D1
} bc>&Qj2Z7c
private void quickSort(int[] data,int i,int j){ xT!<x({
int pivotIndex=(i+j)/2; QH?sx k2
file://swap Bi>]s%zp
SortUtil.swap(data,pivotIndex,j); s5)y%,E
%N0m $*
int k=partition(data,i-1,j,data[j]); dAy\IfZX=
SortUtil.swap(data,k,j); E5Sn mxd
if((k-i)>1) quickSort(data,i,k-1); p+y"r4
if((j-k)>1) quickSort(data,k+1,j); ?F*I2rt#
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5 {
} 0;hn;(V]"
/** UKPr[
* @param data ,RP 9v*
* @param i {@k
, e
* @param j > }kZXeR|
* @return [8K :ml
*/ Sf@xP.d
private int partition(int[] data, int l, int r,int pivot) { d qO]2d
do{ =r3g:j/>q
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
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SortUtil.swap(data,l,r); 6;;2e> e
} l+X\>,
while(l SortUtil.swap(data,l,r); d ,.=9
return l; ]EG8+K6
} A8Km8"
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} .}:*tvot
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改进后的快速排序: 5hTScnL%
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package org.rut.util.algorithm.support; $9:
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import org.rut.util.algorithm.SortUtil; ln8es{q
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/** W_,7hvE?"H
* @author treeroot KL$> j/qT
* @since 2006-2-2 W>:MK-_J
* @version 1.0 NQqNBI?cr
*/ `,4@;j<^@
public class ImprovedQuickSort implements SortUtil.Sort { Bx6,U4o*
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private static int MAX_STACK_SIZE=4096; a2/Mf
private static int THRESHOLD=10; nq~fH(QY
/* (non-Javadoc) ixE w!t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rmr :G
*/ wSPmiJ/!
public void sort(int[] data) { i'\-Y]?[
int[] stack=new int[MAX_STACK_SIZE]; ?CcX>R-/
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int top=-1; H({m1v ~R
int pivot; <FI*A+I4\
int pivotIndex,l,r; IreY8.FND
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stack[++top]=0; dczSW]%
stack[++top]=data.length-1; ]Tg@wMgI
2 )3oX
while(top>0){ ,t:P
int j=stack[top--]; Ge7B%p8
int i=stack[top--]; R.vOYzo
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pivotIndex=(i+j)/2; 1}+b4"7]
pivot=data[pivotIndex]; n$9Xj@+
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SortUtil.swap(data,pivotIndex,j); owb+,Gk(
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file://partition WWo"De@
l=i-1; e,lLHg
r=j; ]E'?#z.t
do{ !nlr!+(fV
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xEeHQ7J
SortUtil.swap(data,l,r); 7AWq3i{
} PN:`SWP
while(l SortUtil.swap(data,l,r); .k
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SortUtil.swap(data,l,j); radP%W-U
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if((l-i)>THRESHOLD){ c;06>1=wP5
stack[++top]=i; OK YbEn#
stack[++top]=l-1; t1yOAbI
} )VqPaKZl
if((j-l)>THRESHOLD){ E'5KJn;_7
stack[++top]=l+1; 3d4A~!Iz
stack[++top]=j; O'{kNr{u
} lnLy"f"zV
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} t%0c$c
file://new InsertSort().sort(data); 'cQ,;y
insertSort(data); +{C)^!zBK
} d2^/
/** K_-m:P
* @param data hZ!kh3@:`
*/ "?lz[K>
private void insertSort(int[] data) { OEXa}K#
int temp; rm$dv%q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R. Fl5B
} } # L_R
} r/"^{0;F{W
} 7J
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} 'J5F+,\Ka
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归并排序: wu`+KUx
#g0N/
package org.rut.util.algorithm.support; Fq5u%S
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import org.rut.util.algorithm.SortUtil; ('$*QC.M
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/** /e^) *r
* @author treeroot B3u/
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* @since 2006-2-2 ` aF8|tc_
* @version 1.0 |@yYM-;6
*/
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public class MergeSort implements SortUtil.Sort{ aDxNAfP
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/* (non-Javadoc) YRr,{[e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'mTY56Yq
*/ \ym^~ Q|
public void sort(int[] data) { M X7Ix{
int[] temp=new int[data.length]; \Q1&w2mw
mergeSort(data,temp,0,data.length-1); q9{)nU
} !!)$?R;1
MI^$df
private void mergeSort(int[] data,int[] temp,int l,int r){ "PO8 Q
int mid=(l+r)/2; AI#.+PrC{/
if(l==r) return ; H$ g*
mergeSort(data,temp,l,mid); w/rJj*
mergeSort(data,temp,mid+1,r); Y4swMN8Bq
for(int i=l;i<=r;i++){ }Nwp{["}]L
temp=data; %7w8M{I R3
} yjH'<
int i1=l; $p&eS_f
int i2=mid+1; 3dLqlJ^7B
for(int cur=l;cur<=r;cur++){ M0\gp@Fe
if(i1==mid+1) s/s&d pT*
data[cur]=temp[i2++]; wU<j=lY?f
else if(i2>r) Dj'?12Onu=
data[cur]=temp[i1++]; A9u>bWIE7
else if(temp[i1] data[cur]=temp[i1++]; m)"(S
else /x$JY\cq`
data[cur]=temp[i2++]; \[.qN
} 5|N`:h'9M
} ^Jq('@
o$Nhx_F
} e*PUs
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改进后的归并排序: JMo r[*
(w5cp!qW9J
package org.rut.util.algorithm.support; %N&W_.F6
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import org.rut.util.algorithm.SortUtil; F ]Zg
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/** Bp5ra9*5+~
* @author treeroot 9+s&|XS*
* @since 2006-2-2 YM'4=BlJHv
* @version 1.0 CI$z+zN
*/ /2c(6h
public class ImprovedMergeSort implements SortUtil.Sort { s@7h oU-+
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private static final int THRESHOLD = 10; K%mR=u#%&
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/* G)t-W%D&
* (non-Javadoc) q/ 54=8*h0
* nXoDI1<[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5;p|iT
*/ S7nx4c2xK~
public void sort(int[] data) { q oi21mCn
int[] temp=new int[data.length]; X9]} UX
mergeSort(data,temp,0,data.length-1); z},\1^[
} Ddg!1SF
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private void mergeSort(int[] data, int[] temp, int l, int r) { nK?S2/o#A
int i, j, k; C~@m6K
int mid = (l + r) / 2; &Mudu/KTr
if (l == r) H)gc"aRe;Y
return; E?P>s T3B
if ((mid - l) >= THRESHOLD) 5V =mj+X?
mergeSort(data, temp, l, mid); r~f;g9I
else 0zSz[;A
insertSort(data, l, mid - l + 1); NW`.7'aWT
if ((r - mid) > THRESHOLD) ,(K-;Id4
mergeSort(data, temp, mid + 1, r); 0;">ETh=
else 87+fd_G
insertSort(data, mid + 1, r - mid); =mZYBm,IQ
Y:,C_^$w;
for (i = l; i <= mid; i++) { #Pf<2S
temp = data; <4vCx
} jK*d
for (j = 1; j <= r - mid; j++) { 4OgH+<G
temp[r - j + 1] = data[j + mid]; }8aqSD<:
} SE^l`.U@
int a = temp[l]; :?g+\:`/0j
int b = temp[r]; ,@?9H ~\
for (i = l, j = r, k = l; k <= r; k++) { rXD:^wUSc
if (a < b) { Fb%?qaLmCv
data[k] = temp[i++]; K|-m6!C!7
a = temp; GPhhg
} else { l7^^MnkC
data[k] = temp[j--]; B;e<.M)e
b = temp[j]; 4=|Q2qgFV
} M80Q6K
} pFNU~y'Kf
} NiW9/(;xB
(&/4wI^M
/** l9a81NF{s
* @param data 4aBVO%t
* @param l `VO;\s$5j
* @param i n9={D
*/ tm=,x~
private void insertSort(int[] data, int start, int len) { YARL/V
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); t^YtP3`?b
} jmaw-Rx
} Jk&!(YK&
} *p\Zc*N;%
} Kd+E]$F_OH
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堆排序: 63Gq5dF
+ynhN\S$/
package org.rut.util.algorithm.support; wyB]!4yy,
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import org.rut.util.algorithm.SortUtil; >L4F'#I
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/** l$9k:#\FD
* @author treeroot ZZo<0kDk
* @since 2006-2-2 jF}kV%E
* @version 1.0 g%S/)R,,ct
*/ 7:uz{xPK6
public class HeapSort implements SortUtil.Sort{ a4~B
1Xm>nF~
/* (non-Javadoc) _1G/qHf^S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a_5s'Dh
*/ {Oy|c
public void sort(int[] data) { e8xq`:4Y
MaxHeap h=new MaxHeap(); <%uEWb)
h.init(data); ?VE'!DW
for(int i=0;i h.remove(); l_:P|
System.arraycopy(h.queue,1,data,0,data.length); Nr>UZlU8
} L{F]uz_[x
jwE=
private static class MaxHeap{ CV"}(1T
<af#
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void init(int[] data){ sa o &
this.queue=new int[data.length+1]; T{+a48,;
for(int i=0;i queue[++size]=data; `+\$
fixUp(size); 9Q s5e
} Bx|W#:3e
} v(.mM9>
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private int size=0; ]9w)0iH
,>6a)2xh
private int[] queue; &>+T*-'
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public int get() { e3CFW_p
return queue[1]; ky[Cx!81C
} EDgtn)1
{*O+vtir%
public void remove() { Bv@p9 ]
n
SortUtil.swap(queue,1,size--); <H60rON
fixDown(1); +CBN[/Z^i
} d>)=|
file://fixdown ZXYyG`3+
private void fixDown(int k) { T=42]h
int j; [}HPV+j=U
while ((j = k << 1) <= size) { wQy~5+LE
if (j < size %26amp;%26amp; queue[j] j++; ,%IP27bPW
if (queue[k]>queue[j]) file://不用交换 dR\yRC]I
break; T]&?^QGAZ
SortUtil.swap(queue,j,k); eUNaq&M
k = j; :3Q:pKg
} `
wEX;
} o ;Z"I &
private void fixUp(int k) { 1K@ieVc
while (k > 1) { \os"w "
int j = k >> 1; 3<$Ek3X
if (queue[j]>queue[k]) o}KVT%}
break; w@,p`
SortUtil.swap(queue,j,k); ?B ,<gen
k = j; SQK82/
} 8ly)G
} K(upzn*a
us|Hb
} 1DcBF@3sWG
Q}B]b-c+E
} \a;xJzc9
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SortUtil: ]m 3cm
hIqU idJod
package org.rut.util.algorithm; N80ogio_Tk
AA,/AKikd
import org.rut.util.algorithm.support.BubbleSort; nD
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import org.rut.util.algorithm.support.HeapSort; Het"x
import org.rut.util.algorithm.support.ImprovedMergeSort; oA-,>:}g{
import org.rut.util.algorithm.support.ImprovedQuickSort; R~a9}&
import org.rut.util.algorithm.support.InsertSort; o#wly%i')
import org.rut.util.algorithm.support.MergeSort; @uRJl$3
import org.rut.util.algorithm.support.QuickSort; d5Ae67
import org.rut.util.algorithm.support.SelectionSort; Gy):hGgN
import org.rut.util.algorithm.support.ShellSort; @,sjM]
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/** s1cu5eCt
* @author treeroot \w1XOm [)
* @since 2006-2-2 `x
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* @version 1.0 Z9M$*Zp
*/ )Hin{~h
public class SortUtil { rMIX{K)'f
public final static int INSERT = 1; [UzacX t
public final static int BUBBLE = 2; d]sqj\Q57
public final static int SELECTION = 3; -n|>U:
public final static int SHELL = 4; c$ib-
public final static int QUICK = 5; |^5"-3Q
public final static int IMPROVED_QUICK = 6; r?[[.zm"7
public final static int MERGE = 7; e'$[PF
public final static int IMPROVED_MERGE = 8; qQ)1+^
public final static int HEAP = 9; -|}?+W
"!vY{9,
public static void sort(int[] data) { n5"oXpcIx
sort(data, IMPROVED_QUICK); J7",fb
} u4
es8"
private static String[] name={ 1\@PrO35J
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" qZ[HILh!
}; fTR6]i;
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private static Sort[] impl=new Sort[]{ )ddJ\:
new InsertSort(), R$l-
7YSt
new BubbleSort(), l+2NA4s
new SelectionSort(), P]^OSPRg
new ShellSort(), !Q~>)$Cf^
new QuickSort(), b6k_u9m^E
new ImprovedQuickSort(), @R`6jS_gK
new MergeSort(), D
ON.)F
new ImprovedMergeSort(), E@k'uyIu
new HeapSort() O6?{@l
}; IYq#|^)5+
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public static String toString(int algorithm){ 0^V<,CAV
return name[algorithm-1]; 7NT}
Zwf
} ,_YI:xie|c
ZJWpb
public static void sort(int[] data, int algorithm) { &'k(v(>n,
impl[algorithm-1].sort(data); B6&[_cht
} ~x9J&*zxM
EmO[-W|2
public static interface Sort { X(x,6cC
public void sort(int[] data); @ntwdv;
} rz&V.,s
iB
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public static void swap(int[] data, int i, int j) { XZk%5t|t
int temp = data; XYP
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data = data[j]; q
j21#q
.
data[j] = temp; Peph..8 Z
} y>t:flD*
} &uE )Vr4 R