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。 V |(H|9
插入排序: #@<9S{F
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package org.rut.util.algorithm.support; ^[:p|U2mA
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import org.rut.util.algorithm.SortUtil; R2Zgx\VV'
/** -f*P
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* @author treeroot `tP7ncky
* @since 2006-2-2 X}+>!%W!}
* @version 1.0 QQWadVQo
*/ wF((
public class InsertSort implements SortUtil.Sort{ jv&*uYm
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/* (non-Javadoc) KQB3m"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0c} }Q
*/ Z&;uh_EC
public void sort(int[] data) { vZ.x{"n'~
int temp; <HbcNE~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9eH$XYy
} u ~A6bK*
} ,l<6GB2\
} uEX!xx?Q#
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} dC RyOid$
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冒泡排序: 8F._9U-EN
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package org.rut.util.algorithm.support; ~ 4kc/a
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import org.rut.util.algorithm.SortUtil; T}8Y6N<\m
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/** '&\kxNglJ
* @author treeroot h*- Pr8
* @since 2006-2-2 \[y`'OD~
* @version 1.0 PYGRsrcFd#
*/ )jt #=9ZQ
public class BubbleSort implements SortUtil.Sort{ /5u<78GW1
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/* (non-Javadoc) ZMel{w`n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x QIq^/F0
*/ @)fd}tV
public void sort(int[] data) { _H5o'>=
int temp; Q)IKOt;N]
for(int i=0;i for(int j=data.length-1;j>i;j--){ EM[WK+9>I{
if(data[j] SortUtil.swap(data,j,j-1); ljb7oA3cP4
} B]Thn
} *{L)dW+:
} #3gp6*R
} 1,% R;7J=g
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} g"}%2~Urf
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选择排序: 7eAX*Kgt<_
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package org.rut.util.algorithm.support; d8c=L8~jt
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import org.rut.util.algorithm.SortUtil; s+<Yg$)
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/** EwvoQ$#jv
* @author treeroot g\&g N
* @since 2006-2-2 K1M%!JKh)x
* @version 1.0 AJF#Aw `o
*/ 2Eu`u!jhx
public class SelectionSort implements SortUtil.Sort { e]zBf;9J
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/* ^SF&=NpV
* (non-Javadoc) ]SLP}Jwy
* w|K'M?N14
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4bYK}oS
*/ ,Ge"anO
public void sort(int[] data) { z?R|Ok
int temp; !WQ-=0cm
for (int i = 0; i < data.length; i++) { oYm[V<nIl
int lowIndex = i; nH[yJGZYSA
for (int j = data.length - 1; j > i; j--) { [q8 P~l
if (data[j] < data[lowIndex]) { ) QU
lowIndex = j; /7Cc#P6
} K3#@SYj
} 8|l\EVV6
SortUtil.swap(data,i,lowIndex); ,)Znb=
} 4\8+9b\9"
} ).`1+b
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} 5>D>% iaHv
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Shell排序: sN9&,&W1
BHU6t<G
package org.rut.util.algorithm.support; {#?N
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import org.rut.util.algorithm.SortUtil; 0dE@c./R i
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/** .$+#1-
* @author treeroot w"-Lc4t+
* @since 2006-2-2 >4TaP*_
* @version 1.0 uxvqMgR
*/ QI'Oz{vE
public class ShellSort implements SortUtil.Sort{ 4;yKOQD|
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/* (non-Javadoc) \`~Ly-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3Q.#c,`jV
*/
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public void sort(int[] data) { yerg=,$_i
for(int i=data.length/2;i>2;i/=2){ Yg%I?
for(int j=0;j insertSort(data,j,i); `yrB->|vG
} f
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} 5q3JI
insertSort(data,0,1); gY/"cq
} tkeoNuAM
/R]U}o^/(%
/** B~MU^|v
* @param data jnO9j_CY
* @param j vdivq^%=a
* @param i y\4L{GlBM
*/ IA8f*]?
private void insertSort(int[] data, int start, int inc) { Gp?a(-K5
int temp; ?+@n3]`0
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _S<3\%(0
} @ym v< Mo
} 3]}D`Qs6
} ey7 f9
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v0
} q9KHmhUD
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快速排序: x
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package org.rut.util.algorithm.support; 4KhV|#-;k
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import org.rut.util.algorithm.SortUtil; )B"jF>9)[
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/** cLpYW7vZ[
* @author treeroot ~7*.6YnI
* @since 2006-2-2 6iVxc|Ia
* @version 1.0 6M @[B|Q(
*/ Ra)3+M!x
public class QuickSort implements SortUtil.Sort{ Y2N>HK0
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/* (non-Javadoc) '}ptj@,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]
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*/ ;w{tv($$
public void sort(int[] data) { T"{>t
quickSort(data,0,data.length-1); '.IW.{;$
} #++lg{
private void quickSort(int[] data,int i,int j){ sEp"D+f
int pivotIndex=(i+j)/2; R1adWBD>
file://swap + [iQLM?zo
SortUtil.swap(data,pivotIndex,j); DU0zez I9
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int k=partition(data,i-1,j,data[j]); "h{q#~s
SortUtil.swap(data,k,j); kj#?whK6~
if((k-i)>1) quickSort(data,i,k-1); .F4>p=r
if((j-k)>1) quickSort(data,k+1,j); GFj{K
=)0,#9k U]
} OcR$zlgs[v
/** %<\vGqsM
* @param data [\^n=
* @param i h]IxXP?h[
* @param j 1OGx>J6
* @return sXLq*b?
*/ ^bGNq
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private int partition(int[] data, int l, int r,int pivot) { \pa"%c)
do{ ]R+mKUZ9
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {2O1"|s ,
SortUtil.swap(data,l,r); 6KXtcXQ
} /hr7NT{e%v
while(l SortUtil.swap(data,l,r); hQ,ch[j'
return l; RuLi,'u
} ity & v9
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} C)um9}
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改进后的快速排序: 5V?&8GTe
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package org.rut.util.algorithm.support; F&!6jv
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import org.rut.util.algorithm.SortUtil; j8v8uZ;x
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/** !a{^=#qq&I
* @author treeroot z Xg3[orF
* @since 2006-2-2 xT3BHnQ(
* @version 1.0 C.WX.Je
*/ LA!?H]
public class ImprovedQuickSort implements SortUtil.Sort { #{\J
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private static int MAX_STACK_SIZE=4096; [>jbhV'
private static int THRESHOLD=10; 0at/c-K`
/* (non-Javadoc) jZu[n)u'C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {3|t;ZHk
*/ |B?cVc0
public void sort(int[] data) { qmkAg }2
int[] stack=new int[MAX_STACK_SIZE]; HZ aV7dOZ8
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int top=-1; :i0uPh\0
int pivot; $njUXSQ;
int pivotIndex,l,r; !y\'EW3|G
XQY#716)
stack[++top]=0; A=$04<nP8!
stack[++top]=data.length-1; W>${zVu
^=GC3%
J
while(top>0){ /Wi[OT14
int j=stack[top--]; sQYkQ81
int i=stack[top--]; :tz#v`3o
*z5.vtfu!
pivotIndex=(i+j)/2; .<->C?#
pivot=data[pivotIndex]; 4X!/hI=jq
7BE>RE=)
SortUtil.swap(data,pivotIndex,j); ux=w!y;}
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file://partition )1]ZtU
l=i-1; 2i)^!c
r=j; bg!/%[ {M
do{ W,K;6TZhh
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L^r#o-H<
SortUtil.swap(data,l,r); 1vS#K=sb
} Ow+GS{-q
while(l SortUtil.swap(data,l,r); GoJ.&aH $
SortUtil.swap(data,l,j); KI.q@zO6|
/MIe(,>Uh
if((l-i)>THRESHOLD){ QJZK|*
stack[++top]=i; qLO4#CKCL6
stack[++top]=l-1; +jAGGv^)
} R4[N:~Z$|
if((j-l)>THRESHOLD){
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stack[++top]=l+1; S(k3 `;K
stack[++top]=j; ^%d\qd`
} OC_+("N
zykT*V
} hwPw]Ln/
file://new InsertSort().sort(data); %41m~Wh2
insertSort(data); F|IAiE
} lS"T4 5
/** ^ sOQi6pL
* @param data =J18eH!]
*/ {JO^tI
private void insertSort(int[] data) { ZJnYIK
int temp; `"Jj1O@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S-a]j;U
} +! ]zA4x
} DEBB()6,
} 2bv=N4ly
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} 3$jT*OyG#
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归并排序: Ab~3{Q]#
9"N~yKa`"K
package org.rut.util.algorithm.support; B~'vCuE
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import org.rut.util.algorithm.SortUtil; P9/q|>F
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/** |'e^QpU5
* @author treeroot Q{O+
* @since 2006-2-2 l#g\X'bK
* @version 1.0 Z]A{ d[
*/ )!3V/`I
public class MergeSort implements SortUtil.Sort{ M-$%Rzl_
lXx=But
/* (non-Javadoc) L 8c0lx}Nn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sG(~^hJ_
*/ kGH }[w
public void sort(int[] data) { s%vis{2
int[] temp=new int[data.length]; R6 y#S&]x
mergeSort(data,temp,0,data.length-1); ^+*N%yr
} 5 )A1\
d8DV[{^
private void mergeSort(int[] data,int[] temp,int l,int r){ f- K+]aZ)
int mid=(l+r)/2; V )3KS-
if(l==r) return ; ^\hG"5#
mergeSort(data,temp,l,mid); \q>bs|2
mergeSort(data,temp,mid+1,r); F6LH $C
for(int i=l;i<=r;i++){ -zCH**y%1
temp=data; lz/8
} =h-U
int i1=l; t0( A4E
int i2=mid+1; DMAIM|h
for(int cur=l;cur<=r;cur++){ T"(&b~m2b4
if(i1==mid+1) 1Rt33\1J0
data[cur]=temp[i2++]; hnffz95
else if(i2>r) +xRK5+}9
data[cur]=temp[i1++]; L\37xJo
else if(temp[i1] data[cur]=temp[i1++]; TeMHm?1^
else b}2ED9HG\
data[cur]=temp[i2++]; HNb/-e ,"
} S%$ }(
} JL`-0P<M
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\
} L{#IT.
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改进后的归并排序: t DO=P
c
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package org.rut.util.algorithm.support; =R^%(Py
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import org.rut.util.algorithm.SortUtil; cA&9e<
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/** $6qh|
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* @author treeroot gLb`pCo/
* @since 2006-2-2 2ElJbN#
* @version 1.0 ~b(i&DVK
*/ @tF\p
public class ImprovedMergeSort implements SortUtil.Sort { \|n-
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private static final int THRESHOLD = 10; *~2,/D
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/* Qu"8(Jk/
* (non-Javadoc) a f6M,{F
* t;){D:]k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &]Q@7Nl7:l
*/ o m!!Sl 3
public void sort(int[] data) { /hpY f]t
int[] temp=new int[data.length]; c|f<u{'
mergeSort(data,temp,0,data.length-1); |a8iZ9/D6
} B=U 3
dR
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private void mergeSort(int[] data, int[] temp, int l, int r) { 0q^>ZF-@
int i, j, k; x!hh"x
int mid = (l + r) / 2; _PPy44r2
if (l == r) jY&k
return; uY0lR:|
if ((mid - l) >= THRESHOLD) T!uM+6|Y
mergeSort(data, temp, l, mid); QER?i;-wb
else !zBhbmlKt
insertSort(data, l, mid - l + 1); \h+AXs<j
if ((r - mid) > THRESHOLD) JX<)EZ!F
mergeSort(data, temp, mid + 1, r); &g#@3e1>
else }?lrU.@zg
insertSort(data, mid + 1, r - mid); sm9k/(-
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for (i = l; i <= mid; i++) { C=-=_>Q,L<
temp = data; 3W V"U
} 3\AU 72-
for (j = 1; j <= r - mid; j++) { '-wj9OU
temp[r - j + 1] = data[j + mid]; ( B!uy`
} n*o-Lo+Fe.
int a = temp[l]; f0!))/rSD
int b = temp[r]; ~cWAl,(B<F
for (i = l, j = r, k = l; k <= r; k++) { %Celc#v
if (a < b) { Ii6<b6-
data[k] = temp[i++]; AWcLUe {
a = temp; 5sdn[Tt##
} else { "<6G6?sz
data[k] = temp[j--]; P)"noG_'i
b = temp[j]; C^s^D:
} {baq+
} =NpYFKmMhV
} FW.7'7G@n
z Eq GD2"
/** 57aXQ8u{
* @param data XFg9P}"
* @param l m)8BgCy
* @param i v0ujdp,B
*/ vx\r!]
private void insertSort(int[] data, int start, int len) { ih)zG
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xg30xC[
} Gw=B:kGk
} ?yZ+D z\
} j 7fL7:,T
} $yN{-T"
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堆排序: #||}R[~P"
:1 ^LsLr5
package org.rut.util.algorithm.support; ><RpEnWZ<
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import org.rut.util.algorithm.SortUtil; p5Z"|\
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/** FO+Zue.RS
* @author treeroot `-.%^eIp
* @since 2006-2-2 svsq g{9z
* @version 1.0 LU
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*/ #r$cyV!k
public class HeapSort implements SortUtil.Sort{ ks&*O!h
Ki4r<>\l{H
/* (non-Javadoc) F7A=GF'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )(A]Ln4
*/ q6@Lp^f
public void sort(int[] data) { v5/~-uRL%
MaxHeap h=new MaxHeap(); @_-hk|Nl@
h.init(data); $>G8_q
for(int i=0;i h.remove(); EH$1fvE
System.arraycopy(h.queue,1,data,0,data.length); .>q8W
} oOnop-z7
8k2?}/+
private static class MaxHeap{ 6RG)`bu
VX].3=T8
void init(int[] data){ kC WEtbz1
this.queue=new int[data.length+1]; %!]@J[*1
for(int i=0;i queue[++size]=data; 6q*9[<8
fixUp(size); @u.58H& }R
} t
4PK}>QW
} 3Ko/{f
"
f
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private int size=0; k;2GEa]w
g=39C>
private int[] queue; $g@=Z"
1uG"f<TsR
public int get() { "&%I)e^
return queue[1]; 0+iu(VbF
} Y}x>t* I
4^:\0UF
public void remove() { 4Z1ST;
SortUtil.swap(queue,1,size--); 2!0c4a^z
fixDown(1); 2n3W=dF
} 0f~C#/[t7
file://fixdown ,kF1T,
private void fixDown(int k) { N<|@ymi
int j; uvMy^_}L
while ((j = k << 1) <= size) { 0QFS
if (j < size %26amp;%26amp; queue[j] j++; zxMXXm;
if (queue[k]>queue[j]) file://不用交换 ^2+yHw
break; $()5VMb
SortUtil.swap(queue,j,k); fo5iJz"Z
k = j; vo`2\R.
} PjZvQ\Z
} 0M*Z'n
+
private void fixUp(int k) { $g/SWq
while (k > 1) { ~Am,%"%\
int j = k >> 1; .}^g!jm~h
if (queue[j]>queue[k]) XJ;D=~
break; E'G4Y-
SortUtil.swap(queue,j,k); R?68*}
`7
k = j; RzBF~2 >i
} &atuK*W>
} esHg'8?U
)+l\w3^6
} lm!.W5-l
u&`XB|~
} G.rrv
|*:'TKzNS
SortUtil: ,#Iu
7di
}#.L7SIJ<J
package org.rut.util.algorithm; "*m_> IU
j2ve^F:Q
import org.rut.util.algorithm.support.BubbleSort; >{N9kWY
import org.rut.util.algorithm.support.HeapSort; *-MM<|Qt
import org.rut.util.algorithm.support.ImprovedMergeSort; NYE`Kin-
import org.rut.util.algorithm.support.ImprovedQuickSort; %JXE5l+pJ
import org.rut.util.algorithm.support.InsertSort; QOjqQfmM;
import org.rut.util.algorithm.support.MergeSort; :ZTc7}
import org.rut.util.algorithm.support.QuickSort; :e]a$
import org.rut.util.algorithm.support.SelectionSort; 8C[C{qOJ
import org.rut.util.algorithm.support.ShellSort; plUZ"Tr
M\sN@+
/** ]+(6,ct&.
* @author treeroot mFg<dTx0c8
* @since 2006-2-2 h?rp|uPQ
* @version 1.0 'h/C oTk@,
*/ ad.3A{
public class SortUtil { I Y2)?"A
public final static int INSERT = 1; r
YogW!
public final static int BUBBLE = 2; o}W%I/s
public final static int SELECTION = 3; 74H)|Dkx
public final static int SHELL = 4; %70~M_
public final static int QUICK = 5; L%BNz3:Dt
public final static int IMPROVED_QUICK = 6; k40* e\
public final static int MERGE = 7; Y]NSN-t
public final static int IMPROVED_MERGE = 8; \]%6|V
public final static int HEAP = 9; qDv93
)>.&N[v
public static void sort(int[] data) { sArhZ[H
sort(data, IMPROVED_QUICK); Y<mej][
} E}Y!O"CAV
private static String[] name={ )f}YW/'
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" R<[qGt|L
}; :A1{ d?B
Qy.w=80kf
private static Sort[] impl=new Sort[]{ _9JhL:cY
new InsertSort(), cV 5CaaL
new BubbleSort(), 6I1,:nLL<
new SelectionSort(), )=5ng-
new ShellSort(), 3{ LP?w:@
new QuickSort(), Pf|siC^;s~
new ImprovedQuickSort(), X}tVmO?
new MergeSort(), 94+KdHAo^M
new ImprovedMergeSort(), k *Q<3@S
new HeapSort() ZT,B(#m
}; T?
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])L
A42|
public static String toString(int algorithm){ CZ(/=3,3n
return name[algorithm-1]; & @s!<9$W
} KHgBo}6
@n(Z$)8tR
public static void sort(int[] data, int algorithm) { dE:+k/
impl[algorithm-1].sort(data); Pdt6nzfr
} ZkA U17f
&GlwC%$S
public static interface Sort { U4gF(Q
public void sort(int[] data); '@p['#\uI
} @c<3b2
LUuZ9$t0J"
public static void swap(int[] data, int i, int j) { 6xWe=QGE
int temp = data; 'f[T&o&L/
data = data[j]; '<rZm=48
data[j] = temp; zRq-b`<7V
} 30XR
82P/
} sA'6ty