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。 AgV G`q
插入排序: R&|mdY8
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package org.rut.util.algorithm.support; v3}L`dyh3
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import org.rut.util.algorithm.SortUtil; ]4h92\\965
/** ~n[xtWO0
* @author treeroot ox:[f9.5
* @since 2006-2-2
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* @version 1.0 GDu~d<R H
*/ :!5IW?2
public class InsertSort implements SortUtil.Sort{ 5QPM t^
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/* (non-Javadoc) [F*.\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?shIj;c[
*/ A3B56K
public void sort(int[] data) { vk*=4}:
int temp; *H?!;u=8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gp4A.\7
} bx]N>k J
} IX*idcxR
} \2ZPj)&-E
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} dFH$l
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冒泡排序: PZ{Dv'C
KN7^:cC
package org.rut.util.algorithm.support; FDVcow*] n
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import org.rut.util.algorithm.SortUtil; w=^`w:5X
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/** 6)vSG7Ise
* @author treeroot R
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* @since 2006-2-2 ms!r ef4`+
* @version 1.0 e*bH0'; q
*/ (T!9SU
public class BubbleSort implements SortUtil.Sort{ BNd^qB ?
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/* (non-Javadoc) iXjo[Rz^C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) krsYog(^z
*/ M7ers|&{
public void sort(int[] data) { ;QW3CEaUq
int temp; UlAzJO6"
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8zA=;~GHP
if(data[j] SortUtil.swap(data,j,j-1); ?;vgUO
} TjQvAkT
} ,WJH}(h"D
} vC1v"L;[o/
} qduWzxB
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} n|b5? 3
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选择排序: 4m*M,# mV
GN!qyT
package org.rut.util.algorithm.support; $BFvF
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import org.rut.util.algorithm.SortUtil; :um|nRwy9
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/** &v"3*.org@
* @author treeroot E2cB U{x
* @since 2006-2-2 oS7(s
* @version 1.0 ^5A
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*/ :WSDf VX
public class SelectionSort implements SortUtil.Sort { Qu}W/j|3
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/* ^s@8VAwi
* (non-Javadoc) c)A{p
* O~59FuL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,Z{d.[$
*/ Ma8_:7`>O
public void sort(int[] data) { 34wkzu
int temp; {dL?rQ>5L
for (int i = 0; i < data.length; i++) { MXzVgy
int lowIndex = i; uu}x@T@
for (int j = data.length - 1; j > i; j--) { LJOr!rWi
if (data[j] < data[lowIndex]) { Q%wY
lowIndex = j; {_Lgtu
} /v/C<]
} H"C[&r
SortUtil.swap(data,i,lowIndex); e.@uhB.
} `.T}=j|
} 8}fu,$$5
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} Ux#x#N
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Shell排序: `ORECg)
e"'#\tSG
package org.rut.util.algorithm.support; C_4)=#@GU
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import org.rut.util.algorithm.SortUtil; )u/H>;L P
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/** '0\@Mc U]
* @author treeroot >~`r:0',
* @since 2006-2-2 I
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* @version 1.0 ?W0)nQU
*/ j6
public class ShellSort implements SortUtil.Sort{ >IX/<
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/* (non-Javadoc) !!4Qj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V^hE}`>z&
*/ E[O<S B
I
public void sort(int[] data) { n @?4b8"
for(int i=data.length/2;i>2;i/=2){ _:X|.W
for(int j=0;j insertSort(data,j,i); t9Y=m6
} cwm_nQKk
} Vpr/
insertSort(data,0,1); z81esXl
} *1 G>YH
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/** uA$<\fnz
* @param data m85WA
#
`
* @param j `u.t[
* @param i =)E,8L
*/ f8SL3+v
private void insertSort(int[] data, int start, int inc) { Dk+&X-]6x5
int temp; l3Lyea:
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); S a4W`
} kN%MP6? J
} &AlJ "N|
} ?7M.o
M;0]u.D*=
} fZxIY,
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快速排序: v^ /Q 8Q
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package org.rut.util.algorithm.support; RN)dS>$
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import org.rut.util.algorithm.SortUtil; 4;HJ;0-ps
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/** '{[5M!B
* @author treeroot w~#nYM=fP!
* @since 2006-2-2 L:(1ZS
* @version 1.0 .<z!3O&L
*/ %0 #XPc("
public class QuickSort implements SortUtil.Sort{ r?CI)Y;
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/* (non-Javadoc) ~GuMlV8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8)kLV_+%
*/ oW^*l#v
public void sort(int[] data) { gORJWQv
quickSort(data,0,data.length-1); w=|GJ0
} *=fr8
private void quickSort(int[] data,int i,int j){ R/^u/~<
int pivotIndex=(i+j)/2; `+t.!tv!
file://swap U|HB=BP
SortUtil.swap(data,pivotIndex,j); Y=`
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int k=partition(data,i-1,j,data[j]); (;%|-{7e-
SortUtil.swap(data,k,j); GZ{]0$9I'
if((k-i)>1) quickSort(data,i,k-1); ,+g&o^T
if((j-k)>1) quickSort(data,k+1,j); f50L,4,
-!0_:m3
} yQ3OL#
/** &QG6!`fK}3
* @param data lpRR&
* @param i f30Pi1/h=c
* @param j /XudV2P-CA
* @return y7S4d~&
*/ wnTV|^Q
private int partition(int[] data, int l, int r,int pivot) { lNv".Y=l
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); k<RZKw Qc
SortUtil.swap(data,l,r); H'MJ{r0,
} lCF`*DM#
while(l SortUtil.swap(data,l,r); BS&;n
return l; Cda!Mk:
} \uME+NF
+[J/Zw0{
} Fkf97Oi
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改进后的快速排序: bu&t'?zx!
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package org.rut.util.algorithm.support; A:y.s;<L0
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import org.rut.util.algorithm.SortUtil; 4d_s%n?C
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/** Bm\qxQ
* @author treeroot _5MNMVLwW
* @since 2006-2-2 QRLJ_W^&u
* @version 1.0 )RYG%
*/ M(d6Z2ibh
public class ImprovedQuickSort implements SortUtil.Sort { M0|'f'
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private static int MAX_STACK_SIZE=4096; >K# ,cxY
private static int THRESHOLD=10; =`Y.=RL+'n
/* (non-Javadoc) Y~)T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \@}#Gez
*/ ri1C-TJM)
public void sort(int[] data) { b dJ+@r
int[] stack=new int[MAX_STACK_SIZE]; E42eOGp9i
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int top=-1; B/Gd(S`@q
int pivot; cL8#S>>u.
int pivotIndex,l,r; .Hc(y7HV
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stack[++top]=0; N~pIC2Woo
stack[++top]=data.length-1; r}u%#G+K,
I
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while(top>0){ MHL("v(@B
int j=stack[top--]; tn|,O.t
int i=stack[top--]; s cdtWA
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pivotIndex=(i+j)/2; 0)Rw|(Fpo]
pivot=data[pivotIndex]; '!Gs>T+
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SortUtil.swap(data,pivotIndex,j); _{jP;W
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file://partition ^MD;"A<
l=i-1; 8hA^`Y
r=j; Fg/dS6=n`?
do{ wA`"\MWm
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wFlvi=n/
SortUtil.swap(data,l,r); NZu)j["
} j<pw\k{i
while(l SortUtil.swap(data,l,r); AGYm';z3
SortUtil.swap(data,l,j); ,}xbAA#
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if((l-i)>THRESHOLD){ 9Q W&$n^
stack[++top]=i; kC$&:\Rh
stack[++top]=l-1; u)Q;8$`
} 4R>zPEo
if((j-l)>THRESHOLD){ o2-@o= F
stack[++top]=l+1; ;r=b|B9c
stack[++top]=j; b'ml=a#i0
} V 'X;jC
f>$h@/-*
} &~B5.sppnB
file://new InsertSort().sort(data); ]%RNA:(F'
insertSort(data); P&*sB%B
} +VEU:1Gt
/** %;z((3F
* @param data IGFGa@C
*/ +TeFt5[)h
private void insertSort(int[] data) { ^TXf sQs
int temp; [O-sVYB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ID1?PM
} }8'&r(cN4
} C9Bh@v%90^
} BbJkdt7
=A[5=
k>
} tPHS98y
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归并排序: ZF#Rej?
o%M<-l"!/
package org.rut.util.algorithm.support; Bk|K%K
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import org.rut.util.algorithm.SortUtil; >s*Drf X6
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/** ++[5q+b
* @author treeroot d]0a%Xh[
* @since 2006-2-2 W( *V2<$o
* @version 1.0 Em13dem
*/ N~=A
public class MergeSort implements SortUtil.Sort{ [A~G-
i cUT<@0
/* (non-Javadoc) *QE<zt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (UEXxUdQ_Q
*/ ]!YtH]}
public void sort(int[] data) { sCH)gr@gJ^
int[] temp=new int[data.length]; v.Ogf5
mergeSort(data,temp,0,data.length-1); Zu<]bv
} FQeYx-7
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private void mergeSort(int[] data,int[] temp,int l,int r){ /jD-\,:L}
int mid=(l+r)/2; i4Z4xTn
if(l==r) return ; >tRHNB_
mergeSort(data,temp,l,mid); i6no;}j
mergeSort(data,temp,mid+1,r); d-!<C7O}
for(int i=l;i<=r;i++){ 8zQfY^/{M
temp=data; !ZtSbOC '
} V*jsq[q=
int i1=l; Edt}",s7
int i2=mid+1; o96:4j4
for(int cur=l;cur<=r;cur++){ ?Z %:
if(i1==mid+1) S;@ay/*~
data[cur]=temp[i2++]; EU`T6M
else if(i2>r) {_ V0
data[cur]=temp[i1++]; "/x_>ui1F
else if(temp[i1] data[cur]=temp[i1++]; whc[@Tyx
else x%BF{Sw
data[cur]=temp[i2++]; T|'&K:[TJ
} l\q}
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} )ctr"&-
>w'$1tc?+F
} %l9$a`&
7
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改进后的归并排序: mv
Ov<x;l
~I_owCVZ
package org.rut.util.algorithm.support; EZr6oO@Nc
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import org.rut.util.algorithm.SortUtil; H 30OUrD
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/** z%"Ai)W/{
* @author treeroot \SYvD y]
* @since 2006-2-2 LPE)
* @version 1.0 P2k7M(I_&
*/ oh}^?p
public class ImprovedMergeSort implements SortUtil.Sort { -@bp4Z=
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private static final int THRESHOLD = 10; M'jXve(=yF
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/* E8[XG2ye
* (non-Javadoc) +g\;bLT
* o'UHStk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3o8\/-*<
*/ Y)p4]>lT+8
public void sort(int[] data) { Gbb\h
int[] temp=new int[data.length]; INNAYQ
mergeSort(data,temp,0,data.length-1); f]_mzF=&
} w7Dt1axB
9D4-^M:a
private void mergeSort(int[] data, int[] temp, int l, int r) { !=zx
int i, j, k; 5:gj&jt;)7
int mid = (l + r) / 2; QUP|FIpZ
if (l == r) _PB@kH#
return; o bGWxI%a
if ((mid - l) >= THRESHOLD) wGXwzU
mergeSort(data, temp, l, mid); wJIB$3OT
else Ph)|j&]
insertSort(data, l, mid - l + 1); 6v47 QW|'
if ((r - mid) > THRESHOLD) O-GxUHwWr
mergeSort(data, temp, mid + 1, r); %Y',|+Arx
else z}APR@?`n8
insertSort(data, mid + 1, r - mid); P/aDd@j
t .=Oj
for (i = l; i <= mid; i++) { 5+L8\V9;
temp = data; :('I)C
}
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for (j = 1; j <= r - mid; j++) { HF4Lqh'oco
temp[r - j + 1] = data[j + mid]; s-6:N9-
} jH0Bo;
int a = temp[l]; 1xC`ZhjcD
int b = temp[r]; J:};n@<
for (i = l, j = r, k = l; k <= r; k++) { ,ep9V,+|
if (a < b) { ;X7i/DQ
data[k] = temp[i++]; j.&
;c'V$.
a = temp; >h7$v~nra
} else {
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data[k] = temp[j--]; nLd~2qBuv
b = temp[j]; &z ksRX
} 5P\N"Yjx'
} _;G=G5r
} iwo$\
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/** NhDA7z`b'J
* @param data 4K,''7N3
* @param l #WEq-0L
* @param i kIM
C~Z
*/ b;{h?xc6
private void insertSort(int[] data, int start, int len) { RZ6~c{
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @XBH.A^7r
}
q)oN2-
} E\!n49
} !3x*k;0
} ewQe/Fq
k`@w(HhS
堆排序: sRi %1r7
\^s2W:c
package org.rut.util.algorithm.support; ]wf|PU~nr
u:5IjOb2^
import org.rut.util.algorithm.SortUtil; DPeVKyjU
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/** Y- ~;E3(
* @author treeroot GC?S];PL
* @since 2006-2-2 g< )72-h
* @version 1.0 lPp6
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*/ f!!P
public class HeapSort implements SortUtil.Sort{ ^2JPyyZa
:B^mV{~
/* (non-Javadoc) O\JD, w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
{9;eH'e
*/ >]?Jrs
public void sort(int[] data) { U#"WrWj
MaxHeap h=new MaxHeap(); g-eq
h.init(data); D"`[6EN[
for(int i=0;i h.remove(); jMqx
System.arraycopy(h.queue,1,data,0,data.length); -fQX4'3R
} 4@/z
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private static class MaxHeap{ %09*l%,;
`{L{wJ:&a
void init(int[] data){ #'iPDRYy
this.queue=new int[data.length+1]; Q>[Ce3
for(int i=0;i queue[++size]=data; X\'E4
fixUp(size); z.j4tc9F/5
} j88=f#<
} 3B -NYJa
xfes_v""
private int size=0; Ff&R0v
F7V6-V{_
private int[] queue; 8.-S$^hj~6
nHVPMi>
public int get() { h,.fM}=H
return queue[1]; O sB?1;:
} soxfk+
9
6~3jn+K$1
public void remove() { F'ENq6
SortUtil.swap(queue,1,size--); &|NZ8:*+#
fixDown(1); bkkSIl+Q
} *bU% @O
file://fixdown ik1XGFy?
private void fixDown(int k) { ?4MSgu
int j; HoV{U zm
while ((j = k << 1) <= size) { ysl8LK
if (j < size %26amp;%26amp; queue[j] j++; i.F8
if (queue[k]>queue[j]) file://不用交换 ]qMH=>pOsj
break; )*Vj3Jx
SortUtil.swap(queue,j,k); Tfr`?:yF
k = j; \d ui`F"Cc
} unJiE!
} |[DV\23{G
private void fixUp(int k) { )kF2HF
while (k > 1) { v10mDr
int j = k >> 1; (<
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if (queue[j]>queue[k]) |;~nI'0O])
break; p!QR3k.9s
SortUtil.swap(queue,j,k); I}rGx
k = j; h&q=I.3O|?
} 7^&lbzVbm(
} R~!\-6%_
/ Z1Wy-Z
} '%);%y@v
dA|Lufy#
} !2#\| NJk
7
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SortUtil: 8V,"Id][
7t`E@dm
package org.rut.util.algorithm; :|zp8|
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import org.rut.util.algorithm.support.BubbleSort; {[my"n2
import org.rut.util.algorithm.support.HeapSort; Oe/73|
>U
import org.rut.util.algorithm.support.ImprovedMergeSort; xSx&79Ez<*
import org.rut.util.algorithm.support.ImprovedQuickSort; pmoGudaRF
import org.rut.util.algorithm.support.InsertSort; :&qC <UD
import org.rut.util.algorithm.support.MergeSort; gO9'q='5l
import org.rut.util.algorithm.support.QuickSort; L!?v BL
import org.rut.util.algorithm.support.SelectionSort; 2 aew6~
import org.rut.util.algorithm.support.ShellSort; `!<x"xKu
2.!1kije
/** ^4RO
* @author treeroot ~d&'Lp[3
* @since 2006-2-2 u"*J[M~
* @version 1.0 aD?# ,
*/ E7k-pquvE
public class SortUtil { K?$9N}+
public final static int INSERT = 1; a^%8QJW
public final static int BUBBLE = 2; ^dheJ]n=k
public final static int SELECTION = 3; [y_yPOv
public final static int SHELL = 4; gHp'3SnS
public final static int QUICK = 5; ]!]`~ Z/
public final static int IMPROVED_QUICK = 6; =7F E/S
public final static int MERGE = 7; YomwjKyuP
public final static int IMPROVED_MERGE = 8; ~wa%fM
public final static int HEAP = 9; p
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qK{|Q
public static void sort(int[] data) { ?OdV1xB
sort(data, IMPROVED_QUICK); 0W;q!H[G
} *iPs4Es-
private static String[] name={ ,:c:6Y^
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" gkSGRshf
}; LQ~LB'L
Z`^
K%P=
private static Sort[] impl=new Sort[]{ &
8ccrw
new InsertSort(), Xs{/}wc.q;
new BubbleSort(), +dDJes!]
new SelectionSort(), <m~T>Ql1
new ShellSort(), MP6 \r
new QuickSort(), @=02
new ImprovedQuickSort(), yBr$ 0$
new MergeSort(), Q~x*bMb.
new ImprovedMergeSort(), j@%K*Gb`
new HeapSort() A"Tc^Ij
}; (r.$%[,.<
V#p G; ,
public static String toString(int algorithm){ 9"m,p
return name[algorithm-1]; qJ#L)
} 9vB9k@9
sx<}
tbG
public static void sort(int[] data, int algorithm) { H4P\hOK7r
impl[algorithm-1].sort(data); z:dXc
} }K#iCby4
Vww@eK%5Q
public static interface Sort { ;+S2h-4
public void sort(int[] data); plzE
} _Jf J%YXy
l*~"5f03
public static void swap(int[] data, int i, int j) { ~+sne7
6 U
int temp = data; oc!biE`u
data = data[j]; #N<s^KYG-
data[j] = temp; }T?i%l
} >:3xi{
} e-nWD