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。 jOK!k
插入排序: }R hSt]
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package org.rut.util.algorithm.support; BcQw-<veu
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import org.rut.util.algorithm.SortUtil; RYl\Q,#
/** 4 .(5m\s!
* @author treeroot aH,NS
* @since 2006-2-2 %[ o($a$
* @version 1.0 '#QZhz(+
*/ !y2yS/
public class InsertSort implements SortUtil.Sort{ #TeAw<2U
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/* (non-Javadoc) ``rYzj_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <0jM07\<
*/ FL0yRF5
public void sort(int[] data) { rK'O 85)eU
int temp; ("<4Ry.u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D>-Pv-f/
} iqsR]mab
} mQK3YoC)
} nwDGzC~y<
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} AD6 b
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冒泡排序: !D/W6Ic@
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package org.rut.util.algorithm.support; C9>^!?>
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import org.rut.util.algorithm.SortUtil; G=kW4rAk
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/** O8LIKD_I[
* @author treeroot D8$4P T0u
* @since 2006-2-2 $?pfst~;O
* @version 1.0 ykGA.wo7/P
*/ dzV2;
public class BubbleSort implements SortUtil.Sort{ @%^h|g8>Fu
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/* (non-Javadoc) 1{qG?1<zZ6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }L^PZS@Jf
*/ 7--E$!9O,
public void sort(int[] data) { +.*=Fn22
int temp; "!D,9AkZS
for(int i=0;i for(int j=data.length-1;j>i;j--){ =>GGeEL
if(data[j] SortUtil.swap(data,j,j-1); tS,AS,vy]
} 8N`Rf;BM
} <DEu]-'>
} $bZ5@)E
} 8N4E~*>C
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} SzUH6|=.R=
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选择排序: =^)$my\C:
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package org.rut.util.algorithm.support; >V>GiSni
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import org.rut.util.algorithm.SortUtil; }rWg']
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/** [Z!oVSCZD%
* @author treeroot +9#qNkP
* @since 2006-2-2 W"tGCnd
* @version 1.0 #smfOGSd
*/ 58o&Dv6?
public class SelectionSort implements SortUtil.Sort { |HwEwL+
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/* ?MvL}o\|
* (non-Javadoc) `?"r\Qo<
* !0v3Lu~j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g$qM}#s0}
*/ uaha)W;'9
public void sort(int[] data) { f{{J_""?&
int temp; C!Fi &~
for (int i = 0; i < data.length; i++) { Xpfw2;`U'
int lowIndex = i; }%0X7'
for (int j = data.length - 1; j > i; j--) { _gl1Qtv@rf
if (data[j] < data[lowIndex]) { J!@R0U.
lowIndex = j; t&_X{!1X"w
} &(|x-OT
} U8<C4
SortUtil.swap(data,i,lowIndex); s/P+?8'9
} cSmy
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} H9WXp&
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} GX*9R>
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Shell排序: l}D /1~d
S&c5Q*->[
package org.rut.util.algorithm.support; '7.4!I0'
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import org.rut.util.algorithm.SortUtil; v:NQrN
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/** UM^~a$t
* @author treeroot #E_<}o
* @since 2006-2-2 #+|0 o-
* @version 1.0 qga?-oz,<6
*/ STPRC&7;
public class ShellSort implements SortUtil.Sort{ Lw<.QMN%f
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/* (non-Javadoc) 1L=)93,M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hOuHTo^
*/ yI%q3lB}^
public void sort(int[] data) { /.sho\a
for(int i=data.length/2;i>2;i/=2){ &{ZUY3
for(int j=0;j insertSort(data,j,i); 4Wa*Pcj
} zqp>Xw
} Bz>5OuOVS\
insertSort(data,0,1); ,MG`}*N}
} }R_Rw:W
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/** F]s:`4
* @param data x1}Ono3"T
* @param j Uyd' uC
* @param i F;BCSoO4
*/ ,}wFQ9*|W
private void insertSort(int[] data, int start, int inc) { ^S!;snhn
int temp; xRqA^Ad
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); M6].V *k'2
} .s KfwcYu4
} /+m2|Ij(
} Jw{duM;]
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} 6r`Xi&
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快速排序: o1uM(
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package org.rut.util.algorithm.support; 'c3'eJ0
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import org.rut.util.algorithm.SortUtil; Tf('iZ2+
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/** 3{|]@ L
* @author treeroot DZ9^>`*
* @since 2006-2-2 x1Z*R+|>2
* @version 1.0 V~do6[(
*/ tjx|;m7
public class QuickSort implements SortUtil.Sort{ ZEvK
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/* (non-Javadoc) g2A#BMe'.$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?F*I2rt#
*/ %al
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public void sort(int[] data) { S27s Rxfr
quickSort(data,0,data.length-1); UKPr[
} ,RP 9v*
private void quickSort(int[] data,int i,int j){ {@k
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int pivotIndex=(i+j)/2; (;-_j/
file://swap 3jHg9M23[^
SortUtil.swap(data,pivotIndex,j); .bj:tmz
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int k=partition(data,i-1,j,data[j]); U=5~]0g
SortUtil.swap(data,k,j); (*AJ6BQWa
if((k-i)>1) quickSort(data,i,k-1); "{zqXM}:C
if((j-k)>1) quickSort(data,k+1,j); ImbA2Gcs
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} "F4 3q8 P
/** s d = bw
* @param data m)Wq*&,o
* @param i }c>vk
* @param j >P//]nn
* @return xC}' "``s
*/ @#;*e] 1a
private int partition(int[] data, int l, int r,int pivot) { oA@c.%&
do{ pWP1$;8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {SD%{
SortUtil.swap(data,l,r); ekqS=KfWl;
} A;o({9VH`Z
while(l SortUtil.swap(data,l,r); Ge^,hAM'
return l; ^66OzT8A
} p"j&s
(!YJ:,!so
} $8SSu|O+x
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改进后的快速排序: Y/T-q<ag8
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package org.rut.util.algorithm.support; zS h9`F
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import org.rut.util.algorithm.SortUtil; |$~]|SK
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/** Oqq'r "S
* @author treeroot {L [
* @since 2006-2-2 {JF"PAS7
* @version 1.0 S\!vDtD@
*/ ]q4(%Q
public class ImprovedQuickSort implements SortUtil.Sort { W=OryEV?
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private static int MAX_STACK_SIZE=4096; < RtyW
private static int THRESHOLD=10; m9+?>/R
/* (non-Javadoc) PZlPC#E-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bm4Bq>*=U
*/ kE|x'(x
public void sort(int[] data) { W1Ye+vg/s
int[] stack=new int[MAX_STACK_SIZE]; =E^/gc%X
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int top=-1; E&5S[n9{3
int pivot; o$V0(1N
int pivotIndex,l,r; 'f.k'2T
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stack[++top]=0; ?<Lm58p8
stack[++top]=data.length-1; :"H?phk
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while(top>0){ O f-xGoYZ
int j=stack[top--]; S.q0L
int i=stack[top--]; yK$aVK"
b#R$P]dr=
pivotIndex=(i+j)/2; pS}IU{#;
pivot=data[pivotIndex]; Upcx@zJ
#,1z=/d.
SortUtil.swap(data,pivotIndex,j); lNl.lI\t)y
axq~56"7E
file://partition MUGoW;}v)
l=i-1; RDjw|V
r=j; lnm@DWhf
do{ nwC*w`4
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); lnLy"f"zV
SortUtil.swap(data,l,r); e4tC[6 ;
} GlRjbNW?Q
while(l SortUtil.swap(data,l,r); 'cQ,;y
SortUtil.swap(data,l,j); +{C)^!zBK
po,Ue>n/
if((l-i)>THRESHOLD){ %[M0TE=J
stack[++top]=i; J9DI(`
stack[++top]=l-1; {9.UeVz
} 3IB9-wG
if((j-l)>THRESHOLD){ S8v?H|rm
stack[++top]=l+1; p
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stack[++top]=j; ;Krb/qr4_
} w5
] lU
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} l&:8 'k+%=
file://new InsertSort().sort(data); }V`_(%Q-e
insertSort(data); -K H"2q
} o?j8"^!7
/** m g@Ol"2
* @param data (@qS
*/ N:'!0|6?x-
private void insertSort(int[] data) { C=v+e%)x@
int temp; DS>&|zF5l
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vqO#Z
} dNF_T?E\
} 4;r,U{uR
} %<[{zd1C-
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} lSO$Q]!9
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归并排序: 'mTY56Yq
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package org.rut.util.algorithm.support; M X7Ix{
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import org.rut.util.algorithm.SortUtil; 3EY
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/** 23`salLclG
* @author treeroot r<Cr)%z!
* @since 2006-2-2 o0S8ki
* @version 1.0 %*wEzvt*
*/ u/-EVCHr
y
public class MergeSort implements SortUtil.Sort{ _nEVmz!zg
;134$7!Y
/* (non-Javadoc) \=mLL|a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +zq"dj_
*/ 3S2Alx!6
public void sort(int[] data) { #7}M\\$M
int[] temp=new int[data.length]; y'I
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mergeSort(data,temp,0,data.length-1); (_CvN=A
} ^FBu|eAkE
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private void mergeSort(int[] data,int[] temp,int l,int r){ b6sf1E
int mid=(l+r)/2; &}7R\co3
if(l==r) return ; /x$JY\cq`
mergeSort(data,temp,l,mid); 6w{_+=T
mergeSort(data,temp,mid+1,r); fjl9*
for(int i=l;i<=r;i++){ [rK`BnJX
temp=data; ^blw\;LB
} DI2e%`$
int i1=l; <eS/-W%n6
int i2=mid+1; wVnmT94
for(int cur=l;cur<=r;cur++){ $C fp1#
if(i1==mid+1) 8>6<GdGL<n
data[cur]=temp[i2++]; D15-pz|Q
else if(i2>r) u a_w5o7
data[cur]=temp[i1++]; g\@ .qKF
else if(temp[i1] data[cur]=temp[i1++]; T4"D&~3
3q
else ztX$kX:_m
data[cur]=temp[i2++]; S-Vj$asv!
} /F~/&p1<\k
} 8F`8=L NO
^B}m~qT
} ~ss6yQ$
ruB D
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改进后的归并排序: BG?>)]6
-l[$+Kw1S
package org.rut.util.algorithm.support; xS5 -m6/
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import org.rut.util.algorithm.SortUtil; .74C~{}$
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/** 0H^*VUyW/
* @author treeroot Fb8d=Zc
* @since 2006-2-2 Lw_|o[I}
* @version 1.0 " M?dU^U^
*/ .Wy'
public class ImprovedMergeSort implements SortUtil.Sort { PuGs%{$(h
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private static final int THRESHOLD = 10; H)gc"aRe;Y
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/* "G.X=,
V
* (non-Javadoc) 3Wv^{|^
* Cb+$|Kg/"b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .udLMS/_
*/ !bYVLFp=\_
public void sort(int[] data) { Ry]9n.y
int[] temp=new int[data.length]; g0U?`;n$
mergeSort(data,temp,0,data.length-1); R2-F@_
} 3e1-w$z&S
j=M%*`@
private void mergeSort(int[] data, int[] temp, int l, int r) { BSgT
6K
int i, j, k; 7g+T
int mid = (l + r) / 2; 42"nbJ
if (l == r) QkD
~
return; 0!0e$!8l
if ((mid - l) >= THRESHOLD) 7kE+9HmfMk
mergeSort(data, temp, l, mid); S\A0gOL^
else xRXvTNEg
insertSort(data, l, mid - l + 1); m[3c,Axl7
if ((r - mid) > THRESHOLD) 83/m^^F{]
mergeSort(data, temp, mid + 1, r); _u$DcA8B
else ]3f[v:JQ
insertSort(data, mid + 1, r - mid); &;P\e
u^{p'a'
for (i = l; i <= mid; i++) { js <Up/1
temp = data; @_-,Q5
} >Jx=k"Kv+
for (j = 1; j <= r - mid; j++) { GF%/q :9
temp[r - j + 1] = data[j + mid]; uK"FopUJ4i
} 'F.P93
int a = temp[l]; sRT H_]c
int b = temp[r]; `VO;\s$5j
for (i = l, j = r, k = l; k <= r; k++) { n9={D
if (a < b) { tm=,x~
data[k] = temp[i++]; *9kg\#
a = temp; Z Se30Rl\
} else { X 5
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data[k] = temp[j--]; ~i?A!
b = temp[j]; #\Rxqh7
} z|%Pi J,
} X5[t6q!
} {x,)OgK!{
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/** Um4zI>
* @param data uZrp ^
* @param l .-tR <{
g
* @param i g1[BrT,
*/ ^ `";GnH0
private void insertSort(int[] data, int start, int len) { _!DH/?aU
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ZZo<0kDk
} #.HnO_sK_
} l~]] RgU
} *(q?O_3,b
} SF-"3M
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堆排序: |a#ikY _nd
IA.7If&k
package org.rut.util.algorithm.support; w[gt9]}N
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import org.rut.util.algorithm.SortUtil; fv8x7l7
@XzfuuE]
/** JP6 Noia
* @author treeroot A~a 3bCX+"
* @since 2006-2-2 mKO~`Wq%@
* @version 1.0 U.t][#<3
*/ ]3Ia>i
public class HeapSort implements SortUtil.Sort{ !Ea! "}
-;_"Y]#
/* (non-Javadoc) AJ*17w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2h51zG#qd
*/ 16 `M=R
public void sort(int[] data) { |au`ph5
MaxHeap h=new MaxHeap(); T{+a48,;
h.init(data); `+\$
for(int i=0;i h.remove(); 9Q s5e
System.arraycopy(h.queue,1,data,0,data.length); Lv%t*s2$/
} _p0Yhju?
Evm3Sm!S
private static class MaxHeap{ [=jZP,b&),
k $gcQ:|
void init(int[] data){ Sj(>G;
this.queue=new int[data.length+1]; vJ'22)n
for(int i=0;i queue[++size]=data; -kLBq:M
fixUp(size); h092S |iY
} <H60rON
} +CBN[/Z^i
d>)=|
private int size=0; ZXYyG`3+
T=42]h
private int[] queue; a}NB6E)-
!vu-`u~86
public int get() { Kj
@<$ChZw
return queue[1]; #`|Nm3b
} V9"R8*@-
ig.Z,R3@r
public void remove() { v;
#y^O
SortUtil.swap(queue,1,size--); &57~i=A
3
fixDown(1); uVU)LOx
} 7MrHu2rZ=
file://fixdown RNB&!NC
private void fixDown(int k) { }9\6!GY0
int j; 61kSCu
while ((j = k << 1) <= size) { BI)C\D3[
if (j < size %26amp;%26amp; queue[j] j++; i&6U5Va,G
if (queue[k]>queue[j]) file://不用交换 vPYHM2
break; %4!^AA%
SortUtil.swap(queue,j,k); #*CMf.OCh
k = j; 1PdG1'
}
+\_\53
} BE@(| U
private void fixUp(int k) { "QXnE^
while (k > 1) { kK4a;j.#
int j = k >> 1; >Df;1:U
if (queue[j]>queue[k]) >e6 OlIW
break; ]h`*w
SortUtil.swap(queue,j,k); 18F}3t??
k = j; q9ra
} ;AOLbmb)H4
} =bD.5,F)
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} nsi?.c&0!
OjlX<y.
} \v-I<"::
au50%sA~
SortUtil: U'" #jT
[#@lsI
package org.rut.util.algorithm; BXdk0
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import org.rut.util.algorithm.support.BubbleSort; ^rq\kf*]
import org.rut.util.algorithm.support.HeapSort; xOShO"4Z
import org.rut.util.algorithm.support.ImprovedMergeSort; ?C fQwY#N
import org.rut.util.algorithm.support.ImprovedQuickSort; }W 5ks-L6
import org.rut.util.algorithm.support.InsertSort; u5ZyOZ;
import org.rut.util.algorithm.support.MergeSort; ~3gazTe9
import org.rut.util.algorithm.support.QuickSort; l@GJcCufE
import org.rut.util.algorithm.support.SelectionSort; hE=xS:6
import org.rut.util.algorithm.support.ShellSort; OV;VsF
3^wHL:u
/** !6X6_ +}M
* @author treeroot P/ 6$TgQ
* @since 2006-2-2 Lwi"K8.u
* @version 1.0 ^TZmc{i
*/ hL/u5h%$
public class SortUtil { -|}?+W
public final static int INSERT = 1; 9rz$c, Y(
public final static int BUBBLE = 2; 'q:7PkN!p
public final static int SELECTION = 3; LRu*%3xx
public final static int SHELL = 4; yKj}l,i~8
public final static int QUICK = 5; <\$"U5"`
public final static int IMPROVED_QUICK = 6; 1K/ :
public final static int MERGE = 7; 1HNP@9ga
public final static int IMPROVED_MERGE = 8; F!hjtIkPj
public final static int HEAP = 9; fTR6]i;
6:%lxG
public static void sort(int[] data) { )ddJ\:
sort(data, IMPROVED_QUICK); R$l-
7YSt
} yN`hW&K
private static String[] name={ !YGHJwW:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N5zWeFq@6
}; up['<Kt+a
L$O\fhO?
private static Sort[] impl=new Sort[]{ ^ICSh8C
new InsertSort(), h&L-G j
new BubbleSort(), )_C>hWvo_
new SelectionSort(), 8k:^( kByF
new ShellSort(), 0^V<,CAV
new QuickSort(), a"YVr'|
new ImprovedQuickSort(), 9jf9u0
new MergeSort(), V]J"v#!{
new ImprovedMergeSort(), 5L2j,]
new HeapSort() o>(<:^x9
}; .^=I&X/P
u(1m#xr8$
public static String toString(int algorithm){ dDl+
return name[algorithm-1]; 0|-}>>qb\
} @a]cI
3t+{~{Dj
public static void sort(int[] data, int algorithm) { M/.M~/~
impl[algorithm-1].sort(data); v4Ag~Evcx
} {:"<E?+
vzfMME17
public static interface Sort { ,m`&J?
public void sort(int[] data); \i,H1a
} GFPrK9T
q['D?)sy
public static void swap(int[] data, int i, int j) { ,_(=w.F
int temp = data; V2?{ebx`
data = data[j]; nkPlfH
data[j] = temp; T=pP
} Jxe 5y3*
(
} U3B&3K} ~