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。 qE M,~:lTn
插入排序: >Zh^,T={G
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package org.rut.util.algorithm.support; :"`1}Q
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import org.rut.util.algorithm.SortUtil; "=yz}~,
/** kyr=q-y
* @author treeroot &90pKs
* @since 2006-2-2 E=t^I/f)E
* @version 1.0 JsDT
*/ ]*<!|;q
public class InsertSort implements SortUtil.Sort{ ! l"*DR
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/* (non-Javadoc) ()zn8_z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) duoM>B>8]
*/ !r4B1fX
public void sort(int[] data) { Pa"[&{ :
int temp; -gpHg
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '25zb+-
} <=@6UPsn2
} ';I(#J6
} CIAKXYM
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冒泡排序: ZV$!dHW/
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package org.rut.util.algorithm.support; '3
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import org.rut.util.algorithm.SortUtil; dm"|\7
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/** D{^CJ :n
* @author treeroot E+~1GKd
* @since 2006-2-2 r=<1*u
* @version 1.0 yLQwG.,
*/ Za7!n{?0
public class BubbleSort implements SortUtil.Sort{ tLM/STb6
jV(b?r)eT{
/* (non-Javadoc) D{M&>.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (VBO1 f
*/ a#m T@l\
public void sort(int[] data) { Xvxj-\ -
int temp; `$yi18F
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;9hS_%ldX4
if(data[j] SortUtil.swap(data,j,j-1); *ch7z|wo.
} G@rV9
} #|F5Kh"
} rvPmd%nk-
} O[z-K K<
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} #ib?6=sPC
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选择排序: -"}nm!j /5
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package org.rut.util.algorithm.support; "
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import org.rut.util.algorithm.SortUtil; GW0e=Y=LR
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/** o^+g2;Ro
* @author treeroot pI}6AAs}Z
* @since 2006-2-2 F\-oZ#g
* @version 1.0 `}~NZ
*/ 7$"n.cr
:
public class SelectionSort implements SortUtil.Sort { 7|X.E
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/* -S
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* (non-Javadoc) qjf9ZD&
* gF r-P! 3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XT{ukEvDR
*/ bkIQ?cl<at
public void sort(int[] data) { 2]+f<Z[/
int temp; :@^T^
for (int i = 0; i < data.length; i++) { \8/$ZEom
int lowIndex = i; BP8jReX^
for (int j = data.length - 1; j > i; j--) { @%I-15Jz
if (data[j] < data[lowIndex]) { j0A9;AP;;C
lowIndex = j; VIuzBmR|\
} vd0uI#g%#
} 6gB;m$:fV
SortUtil.swap(data,i,lowIndex); U^&y*gX1
} 6dKJt
} j9*5Kj
t ]P^6jw'
} e?fA3Fug
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Shell排序: "2hs=^&8
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package org.rut.util.algorithm.support; BZk0B?
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import org.rut.util.algorithm.SortUtil; 7rIEpN>*
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/** Q,nXc
* @author treeroot 1U8/.x|
* @since 2006-2-2 0"koZd,c
* @version 1.0 InB'Ag"
*/ k<k@Tlo
public class ShellSort implements SortUtil.Sort{ =S|dzgS/
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/* (non-Javadoc) } /aqh ;W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 077 wk
*/ YeVkX{y
public void sort(int[] data) { >?r8D48`
for(int i=data.length/2;i>2;i/=2){ ? ;$f"Wl
for(int j=0;j insertSort(data,j,i); MmD1@fW32#
} rl:D>t(:.
} zj7?2
insertSort(data,0,1); @@#(<[S\B
} Wqas1yL_
P@8S|#LpZ
/** )KUEkslR:
* @param data LmjGU[L,@
* @param j SH;:bLk_
* @param i EsjZ;D,c(
*/ #~`d
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private void insertSort(int[] data, int start, int inc) { TH? wXd\
int temp; C*Wyw]:r
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Wrs6t
} q82yh&
} H1hADn
} IAb-O
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} I0} G,
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快速排序: diD[/&k#kh
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package org.rut.util.algorithm.support; zc5>)v LH=
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import org.rut.util.algorithm.SortUtil; ONm-zRx|
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/** 3/EJ^C
* @author treeroot <Eh_
* @since 2006-2-2 WU{9lL=
* @version 1.0 mEq>{l:
*/ ~o8x3`CoF
public class QuickSort implements SortUtil.Sort{ 3(=QY)
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/* (non-Javadoc) e6_`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RBV*e9P%
*/ I4MZJAYk
public void sort(int[] data) { !'8jy_<9
quickSort(data,0,data.length-1); 8eD/9PD=F
} P7
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private void quickSort(int[] data,int i,int j){ ->5[C0: ]
int pivotIndex=(i+j)/2; f- ~]
file://swap k5eTfaxl
SortUtil.swap(data,pivotIndex,j); TJz}
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int k=partition(data,i-1,j,data[j]); UaM&/K9
SortUtil.swap(data,k,j); _t@9WA;+\
if((k-i)>1) quickSort(data,i,k-1); UOkVU*{
if((j-k)>1) quickSort(data,k+1,j); o3a%u(
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} -\V;Gw8mD
/** `l+9g"q
* @param data |]tsf
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* @param i \Vl)q>K_h
* @param j M
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* @return %QFeQ(b/(
*/ ##/ l
private int partition(int[] data, int l, int r,int pivot) { ]`TX%Qni
do{ 0oo*F
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?EA&kZR]
SortUtil.swap(data,l,r); vze|*dKS
} qWb 8"
while(l SortUtil.swap(data,l,r); )KcY<K
return l; LqoH]AcN
} nVGWJ3
# &Z1d(!
} c{wob%!>
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改进后的快速排序: RgLk AHA
JeU1r-i
package org.rut.util.algorithm.support; apv"s+
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import org.rut.util.algorithm.SortUtil; PAs.T4Av^
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/** %^(} fu
* @author treeroot Ls{]ohP
* @since 2006-2-2 h#]LXs
* @version 1.0 wo_iCjmK
*/ L?r\J8Ch<
public class ImprovedQuickSort implements SortUtil.Sort { p@%H.
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private static int MAX_STACK_SIZE=4096; l8RKwECdPn
private static int THRESHOLD=10; [_zoJ
/* (non-Javadoc) o`7B@]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ HQ`A.E2
public void sort(int[] data) { iS}~e{TP/
int[] stack=new int[MAX_STACK_SIZE]; a\Dw*h?b~
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int top=-1; bh UghHT
int pivot; Rmh u"N/q
int pivotIndex,l,r; N A9ss
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stack[++top]=0; n/Dk~Q)
stack[++top]=data.length-1; f}{Oj-:"CC
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while(top>0){ XMm(D!6
int j=stack[top--]; vL~j6'
int i=stack[top--]; +*KDtqZjk
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pivotIndex=(i+j)/2; ~ ]^<*R
pivot=data[pivotIndex]; +V/m V7FK
}BLT2]y0
SortUtil.swap(data,pivotIndex,j); ]M/*Beh
psB9~EU&Q
file://partition =pn(56
l=i-1;
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r=j; Wj\<
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do{ ~+O ws
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x).`nZ1
SortUtil.swap(data,l,r); bb"x^DtT
} _`q ei0
while(l SortUtil.swap(data,l,r); @-Ln* 3n
SortUtil.swap(data,l,j); PZSi}j/
&-4SA j
if((l-i)>THRESHOLD){ h"ko4b3^'@
stack[++top]=i; Rb_+C
stack[++top]=l-1; BxHfL8$1[$
} Wup%.yT~Ds
if((j-l)>THRESHOLD){ h/\/dp/tt
stack[++top]=l+1; FHbw&
stack[++top]=j; If%**o
} 1}b1RKKj<
b'TkYa^
} #;Z+X)
file://new InsertSort().sort(data); c`4i#R
insertSort(data); lr&O@
5"oy
} J)a^3>
/** A_<1}8{L
* @param data S`Wau/7t
*/ $sBje*;
private void insertSort(int[] data) { ]^?V8*zL]
int temp; Q>[GD(8k
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <%Afa#
} #J)83
} CHNIL^B
} SoJ'y6
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} 8n Oent0a
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归并排序: Hy0l"CA*|
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package org.rut.util.algorithm.support; /J` ZO$
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import org.rut.util.algorithm.SortUtil; ql
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/** 3tIno!|
* @author treeroot mYiIwm1cb(
* @since 2006-2-2 VN!+r7w'
* @version 1.0 @E@5/N6M
*/ o
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public class MergeSort implements SortUtil.Sort{ NgPY/R>
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/* (non-Javadoc) 5/"&C-t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NA9N#;
*/ O9(6 ?n
public void sort(int[] data) { #K_E/~
int[] temp=new int[data.length]; zM*PN|/%sH
mergeSort(data,temp,0,data.length-1); _|%l) KO
} " .:b43Z
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private void mergeSort(int[] data,int[] temp,int l,int r){ *{e?%!Q
int mid=(l+r)/2; Zo(p6rku
if(l==r) return ; }|!9aojr
mergeSort(data,temp,l,mid); /~B\1
mergeSort(data,temp,mid+1,r); =
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for(int i=l;i<=r;i++){ 2or!v^^u
temp=data; lf%Ju$H
} |<Gq^3 2
int i1=l; ]v{TSP^/
int i2=mid+1; >[|Y$$
for(int cur=l;cur<=r;cur++){ Msea kF
if(i1==mid+1) G'qGsKf\
data[cur]=temp[i2++]; cf
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else if(i2>r) x9{&rldC
data[cur]=temp[i1++]; *)4`"D
else if(temp[i1] data[cur]=temp[i1++]; o(_~
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else zP$Ef7bB
data[cur]=temp[i2++]; z3X:.%
} Jg\1(ix
}
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} rxVJB3P9
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改进后的归并排序: =$t
@+`">a8},
package org.rut.util.algorithm.support; \C(dWs
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import org.rut.util.algorithm.SortUtil; V0!.>sX9
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/** AJ`R2
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* @author treeroot =u^{Jvl[
* @since 2006-2-2 Sd0y=!Pj=
* @version 1.0 7,![oY[
*/ ahJu+y
public class ImprovedMergeSort implements SortUtil.Sort { !W ,pjW%Y
?()$imb*
private static final int THRESHOLD = 10; M~/R1\'&j
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/* .]\+JTm
* (non-Javadoc) #MhieG5
* C)|{7W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $6 A91|ZSQ
*/ c6 tB9b
public void sort(int[] data) { |f.R]+cH
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); !e"TWO*X
} z8"(Yy7m
RU'
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private void mergeSort(int[] data, int[] temp, int l, int r) { !gfz4f&
int i, j, k; J6 VG j=/
int mid = (l + r) / 2; (2vf
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if (l == r) lx!9KQAM*
return; Z$'483<
if ((mid - l) >= THRESHOLD) OVE5:)$x
mergeSort(data, temp, l, mid); :O(<3"P/
else s[HQq;S
insertSort(data, l, mid - l + 1); [8J/#!B
if ((r - mid) > THRESHOLD) )K+Tvx3(m
mergeSort(data, temp, mid + 1, r); (VxWa#P
else 7Vd"AVn}g
insertSort(data, mid + 1, r - mid); :)9^T<
4Nx]*\\
for (i = l; i <= mid; i++) { [x.DwU%S
temp = data; &oyj8
} Ef2#}%>
for (j = 1; j <= r - mid; j++) { o/U"'FP
temp[r - j + 1] = data[j + mid]; ~YX!49XfHh
} &xGcxFd
int a = temp[l]; Q41eYzAi
int b = temp[r]; a &89K
for (i = l, j = r, k = l; k <= r; k++) { &74*CO9B9
if (a < b) { qU) pBA
data[k] = temp[i++]; Q]u*Oels
a = temp; i1kTP9
} else { 0R0j7\{
data[k] = temp[j--]; v'QmuMWF
b = temp[j]; JTxHM?/G
} Td`0;R'<}c
} dGrm1w
} [MkXQwY
5ma*&Q8+
/** A]FjV~PB
* @param data '#fwNbD
* @param l 3~%wA(|A
* @param i ?l3PDorR
*/ sBo|e]m#
private void insertSort(int[] data, int start, int len) { w53+k\.
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '*PJ-=G
} *&\fBi]
} dIUg
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} k7\h- yn{
} ^q uv`d
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堆排序: iw$n*1M
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package org.rut.util.algorithm.support; 'z=QV {ni
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import org.rut.util.algorithm.SortUtil; 9Xu
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/** B-<H8[GkG1
* @author treeroot PJCRvs|X
* @since 2006-2-2
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* @version 1.0 i8tH0w/(M
*/ $g?`yE(K
public class HeapSort implements SortUtil.Sort{ Xyrf$R'
^,$>z*WQ.
/* (non-Javadoc) 7|"gMw/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f~LM-7!zf}
*/ z}" Xt=G?
public void sort(int[] data) { OC [ +t6
MaxHeap h=new MaxHeap(); ~S],)E1w
h.init(data); k365.nc
for(int i=0;i h.remove(); \*C}[D
System.arraycopy(h.queue,1,data,0,data.length); $
+`
} sKkk+-J4
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private static class MaxHeap{ )i;o\UU
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void init(int[] data){ .mse.$TK.^
this.queue=new int[data.length+1]; T =l4Vb{>
for(int i=0;i queue[++size]=data; j>5D4}*]f
fixUp(size); %Tn0r|K
} ,pgpu !
} nI-^
;34 m!\N5
private int size=0; vB :_|B
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private int[] queue; 4;*o}E
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public int get() { Wa8?o~0"L
return queue[1]; 0 ;b%@_E
} J(\]3 9y
m|RA@sY%`
public void remove() { p.gaw16}>
SortUtil.swap(queue,1,size--); \s.c.c*eh;
fixDown(1); Y+k)d^6r
} &wlSOC')j
file://fixdown ?E@9Nvr
private void fixDown(int k) { ,~!rn}MI<
int j; Sc<%$ Gd
while ((j = k << 1) <= size) { llf|d'5Nl
if (j < size %26amp;%26amp; queue[j] j++; w2!5Cb2
if (queue[k]>queue[j]) file://不用交换 H!D?;X
break; vsjl8L
SortUtil.swap(queue,j,k); RaS7IL:e
k = j; )V}u}5
} uKI2KWU?2
} 6QCU:2IiL
private void fixUp(int k) { `XwFH#_
while (k > 1) { KT)A{i
int j = k >> 1; (Ut)APM
if (queue[j]>queue[k]) .{-&3++WZ
break; +$eEZ;4
SortUtil.swap(queue,j,k); Yxal%
k = j; xp395ub6
} .@Z-<P"
} fE\;C bi
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} %n3lm(-0U
m17H#!`
} }*2q7K2bj
piRP2Lbm*
SortUtil: p&nIUx"
CvwC| AW
package org.rut.util.algorithm; uZe|%xK$y
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import org.rut.util.algorithm.support.BubbleSort; A;t6duBDf/
import org.rut.util.algorithm.support.HeapSort; MLL4nkO,`
import org.rut.util.algorithm.support.ImprovedMergeSort; A=7
[^I2
import org.rut.util.algorithm.support.ImprovedQuickSort; %|l^oC+E
import org.rut.util.algorithm.support.InsertSort; 7Ca+Pe}/n,
import org.rut.util.algorithm.support.MergeSort; *}Al0\q0M
import org.rut.util.algorithm.support.QuickSort; g4 BEo'
import org.rut.util.algorithm.support.SelectionSort; rUX1Iu7
import org.rut.util.algorithm.support.ShellSort; $e=pdD~
\BT 8-}
/** ZiBTe,;
* @author treeroot DK/xHIv8-
* @since 2006-2-2 \X5>HPB
* @version 1.0 Nw`}iR0i
*/ cxhS*"Ph
public class SortUtil { oC]|ARgQk|
public final static int INSERT = 1; GW_@hYIqD
public final static int BUBBLE = 2; :V>M{vd
public final static int SELECTION = 3; PYldqY
public final static int SHELL = 4; T@[(FVA N
public final static int QUICK = 5; OY'490
public final static int IMPROVED_QUICK = 6; sLE@Cm]k
public final static int MERGE = 7; \($EYhx
public final static int IMPROVED_MERGE = 8; "y_A xOH
public final static int HEAP = 9; &;~x{q]3
o}XbFLn
public static void sort(int[] data) { `%lgT+~T
sort(data, IMPROVED_QUICK); |OXufV?I
} ?fB}9(6
private static String[] name={ S7cxEOfAu
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" P
+U=/$o
}; 26fbBt8nP
^^[MDjNy@
private static Sort[] impl=new Sort[]{ >&K1+FSmyJ
new InsertSort(), H7 acT
new BubbleSort(), T{1Z(M+
new SelectionSort(), i"}%ib*X
new ShellSort(), %KxL{HY
new QuickSort(), .".xNHR#
new ImprovedQuickSort(), lW! U:
new MergeSort(), 3YyB0BMW
new ImprovedMergeSort(), "(uEcS2<
new HeapSort() hjB G`S#
}; 4}:a"1P"
o#X|4bES
public static String toString(int algorithm){ _ri1RK,
return name[algorithm-1]; 1LTl=tS#
} ;~Eb Q
$:I~y|
!1
public static void sort(int[] data, int algorithm) { @D!KFJ
impl[algorithm-1].sort(data); 0ad -4
} ;<Dou7=
$gsn@P>"
public static interface Sort { ,nqG*
o
public void sort(int[] data); RW!D!~
} +kF$I7LN
=(kwMJ
public static void swap(int[] data, int i, int j) { (>*<<a22
int temp = data; JO:40V?op
data = data[j]; k^3|A3A
data[j] = temp; `3!ERQU
} 9QaEUy*,
} #t
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