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。 ~B@}R
插入排序: o*7y ax
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package org.rut.util.algorithm.support; .9\Cy4_qSd
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import org.rut.util.algorithm.SortUtil; J7a-CI_Tf
/** y-`I) w%
* @author treeroot /.Wc_/
* @since 2006-2-2 Io+IRK
* @version 1.0 lfMH1llx
*/ =O^7TrM
public class InsertSort implements SortUtil.Sort{ R/N<0!HZ
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ry%YM,K3
*/
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public void sort(int[] data) { fJ :jk6@
int temp; Nz]aaoO4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q lY\*{x4
} Z oTNm
} ur xqek
} w?ai,Pw
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} V/UB9)i+
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冒泡排序: <jL#>L%%
gLCz]D.'
package org.rut.util.algorithm.support; $T)d!$
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import org.rut.util.algorithm.SortUtil; A1!:BC
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/** EC dfLn *c
* @author treeroot QBj Y&(vY
* @since 2006-2-2 ;^.9#B,<
* @version 1.0 /2:Q6J
*/ cJq<9(
public class BubbleSort implements SortUtil.Sort{ |\p5mh
!`h~`-]O
/* (non-Javadoc) :+pPrGj"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bVmvjY4
*/ fbL!=]A*3
public void sort(int[] data) { Y_shy6"KH
int temp; }I<N^j=/pO
for(int i=0;i for(int j=data.length-1;j>i;j--){ H5^Y->
if(data[j] SortUtil.swap(data,j,j-1); &
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} sRil>6QR
} s{% fi*
} 6(5c7R#
} }`@?X"r
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} 0-
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选择排序: 3V!x?H$
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package org.rut.util.algorithm.support; { ;' :h
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import org.rut.util.algorithm.SortUtil; 1'OD3~[R
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/** Oylp:_<aT
* @author treeroot R^?PAHE7
* @since 2006-2-2 j<|6s,&
* @version 1.0 =tP$re";o
*/ I1J)#p%H.
public class SelectionSort implements SortUtil.Sort { .i\wE@v
!Ba3`B5l
/* ].c@Gm_(
* (non-Javadoc) ~)!VV)
* o9^$hDs,si
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I]UA0[8X
*/ mc56L[
public void sort(int[] data) { Suj}MEiv
int temp; u;{T2T
for (int i = 0; i < data.length; i++) { m4\g o
int lowIndex = i; nvwDx*[qN
for (int j = data.length - 1; j > i; j--) { t;~-_{
if (data[j] < data[lowIndex]) { /T4VJ{D
lowIndex = j; \6jF{
} _/8y1)I
} zh
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SortUtil.swap(data,i,lowIndex); hG[4O3jo\
} f#2#g%x
} )m> 6hk
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} k@lXXII ?
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Shell排序: %G^(T%q| m
mKMGdN~
package org.rut.util.algorithm.support; jFS'I*1+
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import org.rut.util.algorithm.SortUtil; (h%|;9tF
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/** iu+zw[f
* @author treeroot jm~mhAE#
* @since 2006-2-2 ge@reGfsB1
* @version 1.0 'II
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*/ G-Zr M
public class ShellSort implements SortUtil.Sort{ [cY?!Qd0
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/* (non-Javadoc) " Tw0a!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d"Ml^rAn
*/ +EQpD.
public void sort(int[] data) { CiHn;-b;
for(int i=data.length/2;i>2;i/=2){ 23,%=U
for(int j=0;j insertSort(data,j,i); 1@s^$fvW
} y`T--v3mI
} Y|Nfwqz
insertSort(data,0,1); a'o}u,e5
} ,OFq'}q
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/** oT$(<$&<
* @param data #.RG1-L
* @param j 2"B}}
* @param i LJ:mJ#
*/ 7v.#o4nPK
private void insertSort(int[] data, int start, int inc) { D6"~fjHh
int temp; {EZFx,@t
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {A!;W
} CAA tco5
} 6eW1<p
} 7Q<Kha
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} ZJ)3GF}4
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快速排序: )<m=YI
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package org.rut.util.algorithm.support; {IF}d*:
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import org.rut.util.algorithm.SortUtil; zWP.1 aA&
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/** QfKR
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* @author treeroot "Yc^Nc
* @since 2006-2-2 L5i#Kh_
* @version 1.0 !-
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*/ 8T!fGzHx
public class QuickSort implements SortUtil.Sort{ $4#=#aKW.
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/* (non-Javadoc) - I1cAt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5e~ j
*/ a
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public void sort(int[] data) { /gMa" 5?,
quickSort(data,0,data.length-1); OtrXYiKB
} @+QYWh'
private void quickSort(int[] data,int i,int j){ 9y
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int pivotIndex=(i+j)/2;
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file://swap .If"'hMY
SortUtil.swap(data,pivotIndex,j); )Gu0i7iN
F}VS)
int k=partition(data,i-1,j,data[j]); dM>j<JC=
SortUtil.swap(data,k,j); Cw9@2E'b
if((k-i)>1) quickSort(data,i,k-1); "^e}C@
if((j-k)>1) quickSort(data,k+1,j); /\oyPD`((
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} ZQgxrZx3
/** tk]_QX
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* @param data GgZEg
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* @param i >b/k|?xP
* @param j `2Z4#$.
* @return uM}dZp 1
*/ J, (U<%n
private int partition(int[] data, int l, int r,int pivot) { u(TgWp5WF
do{ 0%q{UW2
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^=heen<S%
SortUtil.swap(data,l,r); YFC0KU
} ]k3GFPw
while(l SortUtil.swap(data,l,r); 6KZ8 .m}:
return l; `W.vW8!#
} _7t|0aNo\
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} `CTkx?e[
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改进后的快速排序: )edU <1P
xC=3|,U
package org.rut.util.algorithm.support; E@'CU9Fo
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import org.rut.util.algorithm.SortUtil; uHujw.H/y
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/** wj";h Aw
* @author treeroot _dJVnC1 !
* @since 2006-2-2 o0-fUCmC
* @version 1.0 8) ebXc
*/ l{D,O?`Av
public class ImprovedQuickSort implements SortUtil.Sort { G*{ u(x(
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private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; sEgeS9a{
/* (non-Javadoc) p8}5x 2F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f;_K}23
*/ 1,*Z_ F=y
public void sort(int[] data) { I1}{~@
int[] stack=new int[MAX_STACK_SIZE]; EFT02#F_f
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int top=-1; B[U.CAUn
int pivot; #4|i@0n}D
int pivotIndex,l,r; ?@,f[ U-
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stack[++top]=0; !m/Dd0
stack[++top]=data.length-1; v2W"+QS}u
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while(top>0){ ^r?sgJ
int j=stack[top--]; BW(DaNt^
int i=stack[top--]; :n%sU*'T
"*H'bzK
pivotIndex=(i+j)/2; a_}BTkfHa
pivot=data[pivotIndex]; \I o?ul}za
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SortUtil.swap(data,pivotIndex,j); uq#h\p|
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file://partition >sl1 cC
l=i-1; =+sIX3
r=j; 5k7(!
do{ +%cr?g
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U}C#:Xi>$
SortUtil.swap(data,l,r); zdpLAr
} OrKT~JQVC&
while(l SortUtil.swap(data,l,r); 6jy n,GU
SortUtil.swap(data,l,j); g`f6gxc
e>i8 =U`;
if((l-i)>THRESHOLD){ {1-CfQ0
8
stack[++top]=i; =QxE-)v
stack[++top]=l-1; :R _#'i
} +ouy]b0`t
if((j-l)>THRESHOLD){ >i#_)th"U!
stack[++top]=l+1; `sp'Cl!
stack[++top]=j; ,h)T(
} rc{[\1 -N
l4B O@
} %imBGh
file://new InsertSort().sort(data); S|5lx7
insertSort(data); HDae_.
} 7<C~D,x6
/** W U4vb
* @param data kl{OO%jZ
*/ odT7Gq
private void insertSort(int[] data) { />j+7ts
int temp; BNKo6:wy
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); & b^*N5<Z
} B,na
} x2IU PM
} G<WDyoN=O
@W5hrei
} JV6U0$g_S
r
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归并排序: @xM!:
x)qHeS
package org.rut.util.algorithm.support; \5pAG
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import org.rut.util.algorithm.SortUtil; ~9>[ U%D
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/** ~[/c'3+4qn
* @author treeroot =K<I)2
* @since 2006-2-2 uB%^2{uU
* @version 1.0 c+K=pp@
*/ uJ5%JB("E
public class MergeSort implements SortUtil.Sort{ QRG)~
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/* (non-Javadoc) p'c<v)ia
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qYiK bzy
*/ :g:h 0'G
public void sort(int[] data) { Pge }xKT
int[] temp=new int[data.length]; 2P>za\
mergeSort(data,temp,0,data.length-1); rOf
} $Aoqtz d\
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private void mergeSort(int[] data,int[] temp,int l,int r){ YKxA2`3v%
int mid=(l+r)/2; X\)KVn`
if(l==r) return ; Y>!W&Gtu
mergeSort(data,temp,l,mid); R~c vml
mergeSort(data,temp,mid+1,r); oHFDg?Z`
for(int i=l;i<=r;i++){ Z.OrHg1
temp=data; .p*D[o2 9
} -3%)nV
int i1=l; <|.! Px86
int i2=mid+1; +jZg%$Q!#
for(int cur=l;cur<=r;cur++){ N#!1@!2BN
if(i1==mid+1) 7Mg7B
data[cur]=temp[i2++]; KGLhl;a
else if(i2>r) GyM%vGl
3
data[cur]=temp[i1++]; L<>NL$CrN
else if(temp[i1] data[cur]=temp[i1++]; NHVx!Kc
else ]Sx=y<
data[cur]=temp[i2++]; |DS@90}
} F?AfB[PM
} p:>?
+=04X F:
} ITY!=>S-
Hh=::Bi
改进后的归并排序: 4O"kOEkKT>
>{)#|pWU
package org.rut.util.algorithm.support; Z/UVKJm>:
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import org.rut.util.algorithm.SortUtil; ){|Lh(
UNLNY,P/!)
/** N}<U[nh'
* @author treeroot .wOLi Ms
* @since 2006-2-2 JkDZl?x5
* @version 1.0 Wk#-LkI
*/ t SLl'XeN
public class ImprovedMergeSort implements SortUtil.Sort { ~vZzKRVS
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private static final int THRESHOLD = 10; v7u}nx
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/* e>9{36~jh
* (non-Javadoc) 3Ty{8oUs^
* -#M~NbI,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NGZ>:
*/ "/h"Xg>q
public void sort(int[] data) { 1gK3=Ys
int[] temp=new int[data.length]; !fjU?_[S
mergeSort(data,temp,0,data.length-1); MQMy Z:
} h#;K9#x6
#;\;F PuZ
private void mergeSort(int[] data, int[] temp, int l, int r) { `%I{l
int i, j, k; ##ea-"m8
int mid = (l + r) / 2; t|"d#5'
if (l == r) ;9\0x
return; mzR
@P$:36
if ((mid - l) >= THRESHOLD) !+ hgKZ]
mergeSort(data, temp, l, mid);
vXZz=E
AH
else Z"KuS
insertSort(data, l, mid - l + 1); MpvA--
if ((r - mid) > THRESHOLD) U4pvQE.m<
mergeSort(data, temp, mid + 1, r); <
l ^ Z;.
else l q9h Dn[p
insertSort(data, mid + 1, r - mid); }H^^v[4
^K[tO54
for (i = l; i <= mid; i++) { q)i(wEdUZ
temp = data; y9 '3vZ
} +~]g&Mf6o
for (j = 1; j <= r - mid; j++) { )yAPYC
temp[r - j + 1] = data[j + mid]; zXPj7K*
} w'>v@`y
int a = temp[l]; 5E(P,!-.
int b = temp[r]; n\DT0E]
for (i = l, j = r, k = l; k <= r; k++) { 1k({(\>qq
if (a < b) { lY?d*qED
data[k] = temp[i++]; 5-po>1g'
a = temp; a{.n(M
} else { G\AQql(f4
data[k] = temp[j--]; a-5$GvG
b = temp[j]; Db:WAjU
} dPX>A4wp
} 9xp
;$14
} O:R{4Q*5
$QnfpM%+=
/** 0P
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* @param data yln.E vJjD
* @param l g5\B- 3{
* @param i \H12~=p`B
*/ en":
private void insertSort(int[] data, int start, int len) { Lj,%pz J
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @SB+u+mOS
} r\`m[Q
} s``L?9
} oI/ThM`=q
} LvdMx]*SSr
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堆排序: 'm:B(N@+
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package org.rut.util.algorithm.support; !d_A? q'hN
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import org.rut.util.algorithm.SortUtil; 8~>3&jX
DR=1';63
/** @ U|u _S@
* @author treeroot PS1~6f"D
* @since 2006-2-2 Yw
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* @version 1.0 $sJfxh
r
*/ z<*]h^!3
public class HeapSort implements SortUtil.Sort{ 'M/&bu r
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/* (non-Javadoc) fXj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {}e IpK,+
*/ AG2jl/
public void sort(int[] data) { c5pG?jr+d
MaxHeap h=new MaxHeap(); w:v:znQrW
h.init(data); x N)Ck76
for(int i=0;i h.remove(); Op~+yMef
System.arraycopy(h.queue,1,data,0,data.length); (1vS)v
$L
} #\QC%"%f
voE c'JET
private static class MaxHeap{ _>I5Ud8(-
]Hq%Q~cE
void init(int[] data){ ".IhV<R
this.queue=new int[data.length+1]; .}s a2-
for(int i=0;i queue[++size]=data; WH*&MIjAr/
fixUp(size); 4Rq"xYGXh
} Z0KA4O$eL
} ;<H2N0qJ(
/.bwwj_;
private int size=0; J$[Vm%56
Sa5 y7
private int[] queue; s5e}X:
i9tM]/SP
public int get() { L zC~> Uj
return queue[1]; O*7
pg
} f0+
DK;-2K
public void remove() { g=8e.Y*Fr
SortUtil.swap(queue,1,size--); ?Fu.,srt
fixDown(1); 5N0H^
} 3&f{lsLAC
file://fixdown 8pk">"#s
private void fixDown(int k) { ;p8xL)mUP
int j; .rHO7c,P~
while ((j = k << 1) <= size) { >{Djx
if (j < size %26amp;%26amp; queue[j] j++; >E3OYa?G
if (queue[k]>queue[j]) file://不用交换 *6DKUCA/
break; J%'|IwA
SortUtil.swap(queue,j,k); t[Q\T0E
k = j; wW~2]*n
} PoZBiw@
} fsoS!6h0k
private void fixUp(int k) { SbY i|V,H
while (k > 1) { ;7}*Xr|
int j = k >> 1; l]gfT&
if (queue[j]>queue[k]) sXA=KD8
break; /DCUwg=0
SortUtil.swap(queue,j,k); ::6@mFL R
k = j; NG ~sE&,7
} XOMWqQr|
} lx SGvvP4
cqDnZ`|6
} q=U=Y
n
hE${eJQ| U
} fqxMTTg@
ryPzq}#
SortUtil: p{U ro!J,K
S3w? X
package org.rut.util.algorithm; lUmaNZ
a9%#
J^!
import org.rut.util.algorithm.support.BubbleSort; ! WNr09`
import org.rut.util.algorithm.support.HeapSort; Zr3KzY9
import org.rut.util.algorithm.support.ImprovedMergeSort; zK v}J
import org.rut.util.algorithm.support.ImprovedQuickSort; }/|1"D
import org.rut.util.algorithm.support.InsertSort; rnUe/HjH
import org.rut.util.algorithm.support.MergeSort; t V</x0#
import org.rut.util.algorithm.support.QuickSort; }I"^WCyH
import org.rut.util.algorithm.support.SelectionSort; (Q&Z/Fe
import org.rut.util.algorithm.support.ShellSort; LvS`
xQ4Q '9
/** }/=_
* @author treeroot Yyf8B
* @since 2006-2-2 [LE_lATjU
* @version 1.0 3$_wAt4w
*/ {>#Ya;E
public class SortUtil { *:iFhKFU
public final static int INSERT = 1; JdE=!~\8
public final static int BUBBLE = 2; R/=yS7@{)
public final static int SELECTION = 3; h1xYQF_`Z
public final static int SHELL = 4; N]3XDd|q
public final static int QUICK = 5; d}1R<Q;F
public final static int IMPROVED_QUICK = 6; tG'c79D\
public final static int MERGE = 7; !U@[lBW
public final static int IMPROVED_MERGE = 8; K=V)"v5o3
public final static int HEAP = 9; x(A.^Yz
GKX#-zsh79
public static void sort(int[] data) { IIzdCa{l
sort(data, IMPROVED_QUICK); n=`UhC
} EG,RlmcPp
private static String[] name={ +]G;_/[2
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?(Nls.c
}; Xh5
z8
&W1c#]q@r
private static Sort[] impl=new Sort[]{ P69S[aqW
new InsertSort(), 7+fFKZFKF
new BubbleSort(), r>Vgo):s
new SelectionSort(), 3/iGSG`
new ShellSort(), U.&=b<f(0r
new QuickSort(), ,Ao8QN
new ImprovedQuickSort(), E8/P D
new MergeSort(), 7C=t19&R'
new ImprovedMergeSort(), )l^w _;
new HeapSort() 1r$q $\
};
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DF<_Ns!
public static String toString(int algorithm){ YkTEAI|i
return name[algorithm-1]; _ 95V"h
} /IODRso/!
^XV$J-
public static void sort(int[] data, int algorithm) { {C
[7V{4(%
impl[algorithm-1].sort(data); [!"u&iu`
} C Z|R-ky6p
KdUmetx1
public static interface Sort { vNP,c]:%
public void sort(int[] data); DEIn:d
} #8cY,%<S]
,`K'qms
public static void swap(int[] data, int i, int j) { VK8 5A
int temp = data; e tY9Pq
data = data[j]; WSL_Dc
data[j] = temp; tR1
kn&w
} N]gdS]pP2{
} .pZwhb