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。 shw?_#?1dy
插入排序: 9Qyc!s`
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package org.rut.util.algorithm.support; *)[fGxz
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import org.rut.util.algorithm.SortUtil; +}jzge"
/** /`cy4<
* @author treeroot QMMpB{FZ`o
* @since 2006-2-2 qkfof{z
* @version 1.0 3[#^$_96b
*/ :[a*I6/^
public class InsertSort implements SortUtil.Sort{ F-kjv\
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/* (non-Javadoc) .#y#u={{l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6$"IeBRO
*/ 1F.._5_"]
public void sort(int[] data) { s:{[Y7\?
int temp; xWLZlUHEu
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W2`3 p
} 'e:4
} ]MCH]/
} U<Oc&S{]*
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} J_F\cM
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冒泡排序: {GtX:v#
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package org.rut.util.algorithm.support; +.djC3^:
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import org.rut.util.algorithm.SortUtil; Q]5_s{kiz
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/** d8Vqmrc~
* @author treeroot {X?Aj >l
* @since 2006-2-2 @
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* @version 1.0 B}qG-}(V
*/ {]Mwuqn
public class BubbleSort implements SortUtil.Sort{ uP4yJ/]
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/* (non-Javadoc) nZiwR4kM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T6y~iNd<
*/ kRggVRM
public void sort(int[] data) { HnPy";{
int temp; KyIUz9$
for(int i=0;i for(int j=data.length-1;j>i;j--){ |HAbZd7PG
if(data[j] SortUtil.swap(data,j,j-1); U]pE{^\w
} rFcz0
} ~xzr8 P
} dr#%~I
} T=NLBJ
g)f& mQ)
} *X3wf`C?
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选择排序: GX23c
i
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package org.rut.util.algorithm.support; 7j|CWurvq
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import org.rut.util.algorithm.SortUtil; L0VZ>!*o
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/** h5P ]`r
* @author treeroot _G)A$6weU
* @since 2006-2-2 ;Q3[} ]su
* @version 1.0 62;xK-U
*/ L=54uCv
Q
public class SelectionSort implements SortUtil.Sort { m|JA}&A
@|h9jx|
/* h@JX?LzZS
* (non-Javadoc) N_Ezp68Fp
* DhxS@/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `JV(ae0
*/ FzOWM7+\
public void sort(int[] data) { :~vg'v~C
int temp; {KDN|o+%
for (int i = 0; i < data.length; i++) { Sg%s\p]N_#
int lowIndex = i; ~jJ.E_i
for (int j = data.length - 1; j > i; j--) { iWWtL
if (data[j] < data[lowIndex]) { 6RIbsy
lowIndex = j; L~/L<M s
} `]]5!U2
} ElTB{C>u
SortUtil.swap(data,i,lowIndex); 7Wv.-LD6
} 0NSw^dO\
} *Mg@j;+5s
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} qu#xc0?
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Shell排序: (z;lNl(*C
R68:=E4
package org.rut.util.algorithm.support; .[eC w
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import org.rut.util.algorithm.SortUtil; Zs|Ga,T
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/** @=z.^I30
* @author treeroot ";Cf@}i>
* @since 2006-2-2 Fa`%MR1
* @version 1.0 | )
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*/ 7L:Eg
public class ShellSort implements SortUtil.Sort{ dHAT($QG
`uLr^G=;
/* (non-Javadoc) Qm7];,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uufig)6
*/ zrSYLG
public void sort(int[] data) { L[:AU e
for(int i=data.length/2;i>2;i/=2){ [&P@0Fn
for(int j=0;j insertSort(data,j,i); PI$i_3N
} yX*$PNL5w
} g :B4zlKG
insertSort(data,0,1); }UcdkKq
} mc`Z;D/mt
jLn#%Ia}
/** |<3x`l-`
* @param data sWse
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* @param j mVS^HQ:
* @param i Hr=|xw8.
*/ ,%A|:T]
private void insertSort(int[] data, int start, int inc) { #mJRL[V5^
int temp; |_g7k2oLY
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T9J&^I
} E;`^`T40
} ]5@n`;.
} OpazWcMoo
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} ]iW:YNvXA
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快速排序: ^B%ki
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package org.rut.util.algorithm.support; @J>JZ7m]\
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import org.rut.util.algorithm.SortUtil; H}_R `S
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/** l -nH
* @author treeroot 9%SC#V'
* @since 2006-2-2 /Q)I5sL@E
* @version 1.0 `<~=6H
*/ ~}{_/8'5
public class QuickSort implements SortUtil.Sort{ vP#*if[V5
B R
/* (non-Javadoc) !#%>,X#+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }8YY8|]LI
*/ /~".GZ&29
public void sort(int[] data) { H)S!%(x4
quickSort(data,0,data.length-1); B#IUSHC
} hP'4PLK
private void quickSort(int[] data,int i,int j){ o(DG 3qk
int pivotIndex=(i+j)/2; DC/Czkv9
file://swap {U>N*&_`
SortUtil.swap(data,pivotIndex,j); fD(r/~Vu
x%k@&d;z
int k=partition(data,i-1,j,data[j]); (x\VGo
SortUtil.swap(data,k,j); I0H]s/*C%9
if((k-i)>1) quickSort(data,i,k-1); vm;%713#1
if((j-k)>1) quickSort(data,k+1,j); n8)&1
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} \p.yR.
/** >l%8d'=Jl
* @param data F_-xp1|
* @param i 8oI|Z=
* @param j K/Pw;{}
* @return \6MM7x(U3
*/ N.q*jY=X|
private int partition(int[] data, int l, int r,int pivot) { k18v{)i~
do{ JF~9efWe>
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); p/nATvh$
SortUtil.swap(data,l,r); o
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} <[
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while(l SortUtil.swap(data,l,r); ZI1]B944ni
return l; e-v|
} #Ff8_xhP 2
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} xk/-TXB
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改进后的快速排序: &b^~0Z
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package org.rut.util.algorithm.support; _()1"5{
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import org.rut.util.algorithm.SortUtil; ?ZGsh7<k
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/**
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* @author treeroot R ai
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* @since 2006-2-2 +C~d;p
* @version 1.0 (p12=EB<
*/ j%y{d(Q4
public class ImprovedQuickSort implements SortUtil.Sort { g"|>^90
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private static int MAX_STACK_SIZE=4096; L~;(M6Jp
private static int THRESHOLD=10; U/kQw rM
/* (non-Javadoc) zdU46|!u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "9c=kqkX
*/ b+:J?MR;}
public void sort(int[] data) { &wY$G! P
int[] stack=new int[MAX_STACK_SIZE]; RjvW*'2G
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int top=-1; =&pLlG
int pivot; Xj{fM\,"9
int pivotIndex,l,r; R{bG`C8.d
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stack[++top]=0; NZ i3U
stack[++top]=data.length-1; ToPjBvD
"OwVCym?
while(top>0){ #z%D d{E
int j=stack[top--]; :8oJG8WH
int i=stack[top--]; !dGu0wE
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pivotIndex=(i+j)/2;
6(-s@{
pivot=data[pivotIndex]; gELG/6l
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SortUtil.swap(data,pivotIndex,j); ^Z;zA@[wt
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file://partition ZfqN4
l=i-1; 6MY<6t0a
r=j; 'n-y*f
do{ UQ0<sI=
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3BCD0
%8
SortUtil.swap(data,l,r); #6ePwd
} _ pz}
while(l SortUtil.swap(data,l,r); LOi}\O8
SortUtil.swap(data,l,j); wxc#)W
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if((l-i)>THRESHOLD){ K6-M .I
stack[++top]=i; J=$\-
stack[++top]=l-1; TE+>|}]R
} kUS]g
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if((j-l)>THRESHOLD){ `q<W %'Tb$
stack[++top]=l+1; LYRpd
stack[++top]=j; HBOyiIm Q
} #L+:MA7H
7LrmI~P
} b \`S[
file://new InsertSort().sort(data); rq8 d}wj
insertSort(data); lcm[l
} ^O+ (eA7E
/** [F-GaaM
* @param data _7;:*'>a4
*/ 8vR_WHsL
private void insertSort(int[] data) { ; iia?f1
int temp; y{hy7w' d
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RhHm[aN
} U3V5Jor#
} 1F`jptVQ\G
} Px=@Tw N,
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} qJdlZW<
+K'Hr:(
归并排序: ZzupK^5Z
i}DS+~8v
package org.rut.util.algorithm.support; [A,^F0:h
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import org.rut.util.algorithm.SortUtil; iI IXv
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/** PZusYeV8b
* @author treeroot l^Rb%?4Z
* @since 2006-2-2 kzRJzJq uP
* @version 1.0
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*/ 87 s *lS
public class MergeSort implements SortUtil.Sort{ !>`Fg>uy
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/* (non-Javadoc) _{cCo:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R03 Te gwA
*/ G7nhUg
public void sort(int[] data) { vNv!fkl
int[] temp=new int[data.length]; !&rd#ZBn
mergeSort(data,temp,0,data.length-1); ~pQN#C)CO>
} MWh Y&I+
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private void mergeSort(int[] data,int[] temp,int l,int r){ "G K9Y
int mid=(l+r)/2; ?FAI@4
if(l==r) return ; !o /=,ZIx
mergeSort(data,temp,l,mid); Eu`|8# [ W
mergeSort(data,temp,mid+1,r); 22CET9iCe
for(int i=l;i<=r;i++){ kJ_8|
temp=data; [Vo5$w
} v.jxG{~.
int i1=l; "ntP92 8
int i2=mid+1; K@O^\
for(int cur=l;cur<=r;cur++){ 7pyzPc#_
if(i1==mid+1) !=YKfzE
data[cur]=temp[i2++]; AzOs/q8O
else if(i2>r) \x}\)m_7M<
data[cur]=temp[i1++]; m [B#k$
else if(temp[i1] data[cur]=temp[i1++]; sF{aG6u
else X@\W*
nq
data[cur]=temp[i2++]; E&P2E3P
} C_Ewu*T7
} =n5'~1?X?
4KM-$h,4O
} PW5]+ |#
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改进后的归并排序: P0n1I7|
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package org.rut.util.algorithm.support; VLez<Id9(
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import org.rut.util.algorithm.SortUtil; X/,)KTo7
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/** >[fu&r1
* @author treeroot ef7{D
P
* @since 2006-2-2 @KQ.t F*
* @version 1.0 gJ
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*/ Tnp
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public class ImprovedMergeSort implements SortUtil.Sort { G](4!G&
gc.Lh~
private static final int THRESHOLD = 10; #J"xByQKK
N*o{BboK;
/* UZyg_G6
* (non-Javadoc) q!ZM Wg
* |58HPW9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Vre)OrN#
*/ 0<uek
public void sort(int[] data) { UTD_rQ
int[] temp=new int[data.length]; hIJtu;}zU
mergeSort(data,temp,0,data.length-1); {%R^8
} *q=T1JY
{o}U"b<+Ra
private void mergeSort(int[] data, int[] temp, int l, int r) { )L:zr#
int i, j, k; [IL*}M!
int mid = (l + r) / 2; 0[MYQl`
if (l == r) @NL cO}
return; gM&IV{k3
if ((mid - l) >= THRESHOLD) ]M7FIDg
mergeSort(data, temp, l, mid); $Nu{c;7"
else F8f}PV]b
insertSort(data, l, mid - l + 1); .[Sis<A]%
if ((r - mid) > THRESHOLD) 1M]=Nv
mergeSort(data, temp, mid + 1, r); ubcB<=xb
else g+ c*VmY
insertSort(data, mid + 1, r - mid); ^65I,Z"
4S<M9A}
for (i = l; i <= mid; i++) { v675C# l(
temp = data; ?QOU9"@+B
} g#J`7n
for (j = 1; j <= r - mid; j++) { PI9,*rOy
temp[r - j + 1] = data[j + mid]; UM oj9/-
} }L\;W:0
int a = temp[l]; TN(Vzs%
int b = temp[r]; $UR:j8C{p$
for (i = l, j = r, k = l; k <= r; k++) { ^_WR) F'K
if (a < b) {
LR97FG
data[k] = temp[i++]; EeW
,-I
a = temp; -S'KxC
} else { !5`MiH
data[k] = temp[j--]; S,m(
b = temp[j]; +A|
Bc~2!
} Q|'f3\
} J:Cr.K`
} 4t,
2H" M
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/** D:z'`v0j
* @param data uvId],dQ5
* @param l A)f-r
* @param i 8q^}AT<C
*/ dli(ckr
private void insertSort(int[] data, int start, int len) { (` *BZ_
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1'~Xn
4
f
} 7v5]%%E/
} 3l{V:x!9@
} jIol`WX
} ?qgQ)#6
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堆排序: 3s6obw$ki
TSB2]uH
package org.rut.util.algorithm.support; |Y7SP]/`gB
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import org.rut.util.algorithm.SortUtil; #T=iS(i
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/** 'C]w3Rh'
* @author treeroot 7(Fas(j3
* @since 2006-2-2 586P~C[ic
* @version 1.0 >8f~2dH2%
*/ Ku(YTXtK
public class HeapSort implements SortUtil.Sort{ h^Wb<O`S
zI`I
Q
/* (non-Javadoc) [:8\F#KW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 19E(Hsz
*/ ^O07GYF
public void sort(int[] data) { 2bt>t[0ad
MaxHeap h=new MaxHeap(); 4^F[Gp?
h.init(data); j4~(6Imm
for(int i=0;i h.remove(); q$:1Xkl
System.arraycopy(h.queue,1,data,0,data.length); RkYdK$|K
} Y%KowgP\
%7#<K\])
private static class MaxHeap{ ;UQGi}?CD
%_(vSpk
void init(int[] data){ FM{f{2j
this.queue=new int[data.length+1]; N!+=5!
for(int i=0;i queue[++size]=data; ) /raTD
fixUp(size); c]6b|mHT
} 6S`_L
} \<7Bx[/D4
/Hr|u
private int size=0; B2;P%B
uo"<}>iJ
private int[] queue; 1j?P$%p
Y~"tL(WfJl
public int get() { gIB3DuUo
return queue[1]; Od!)MQ*,
} $qNF /rF
IiPX`V>RC
public void remove() { [\8rh^LFi
SortUtil.swap(queue,1,size--); I9X\@lTf
fixDown(1); @6;OF5VsQ
} `<7\Zl
file://fixdown $$9H1)Ny
private void fixDown(int k) { S\GWMB!oF
int j; 8E%LhA.
while ((j = k << 1) <= size) { #(^<qr
if (j < size %26amp;%26amp; queue[j] j++; |AYii-g
if (queue[k]>queue[j]) file://不用交换 4 &bmt
break; mskG2mA
SortUtil.swap(queue,j,k); 4.O) /0sU
k = j; XZE(& (s
} G5}_NS/
} ;hT3N UCA
private void fixUp(int k) { )D8op;Fn
while (k > 1) { UmR)L!QT8
int j = k >> 1; 8eXeb|?J
if (queue[j]>queue[k]) XGa8tI[:X
break; q5f QTV
SortUtil.swap(queue,j,k); ]#o;`5'
k = j; hek+zloB+
} Rhc:szDU
} 6n9/`D!
kV'zAF
v
} *zdD4I=
4C;;V m4~
} 2S8;=x}/
<cTX;&0=
SortUtil: 9D3W _eIc
wd`p>
package org.rut.util.algorithm; lR?y
tIY
iv*RE9?^
import org.rut.util.algorithm.support.BubbleSort; EyK!'9~a
import org.rut.util.algorithm.support.HeapSort; d"|_NG` vr
import org.rut.util.algorithm.support.ImprovedMergeSort; PQaTS*0SXJ
import org.rut.util.algorithm.support.ImprovedQuickSort; dz^HN`AlzC
import org.rut.util.algorithm.support.InsertSort; }qWnn>h9xv
import org.rut.util.algorithm.support.MergeSort; cH_qHXi[G
import org.rut.util.algorithm.support.QuickSort; +`d92T z
import org.rut.util.algorithm.support.SelectionSort; |f_'(-v`E
import org.rut.util.algorithm.support.ShellSort; c.>f,vtcn
>Na. C(DZ
/** K|%Am4
* @author treeroot ^G!cv
* @since 2006-2-2 mV}bQ^*?Z
* @version 1.0 xp|1yud
*/ RP~nLh3=\
public class SortUtil { t|U5]$5
public final static int INSERT = 1; u`v&URM
public final static int BUBBLE = 2; By1Tum+I1
public final static int SELECTION = 3; c7CYulm
public final static int SHELL = 4; \&F4Wl>`
public final static int QUICK = 5; +$C9@CZM9
public final static int IMPROVED_QUICK = 6; %R GZu\p
public final static int MERGE = 7; pA8bFtt
public final static int IMPROVED_MERGE = 8; CR [>5/:M
public final static int HEAP = 9; DuC#tDP
sc*R:"
public static void sort(int[] data) { rWr'+v?
sort(data, IMPROVED_QUICK); `l45T~`]$
} -r*|N.5c
private static String[] name={ [8'?G5/n
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -mO#HZ Iq
}; q^xG%YdPz+
"M/c0`>C!i
private static Sort[] impl=new Sort[]{ ';R]`vWFe
new InsertSort(), -nGcm"'6F
new BubbleSort(), =-^A;AO(
new SelectionSort(), > TYDkEs0
new ShellSort(), Noj*K6
new QuickSort(), nmpc<&<<
new ImprovedQuickSort(), 7rD 8
new MergeSort(), #M!u';bZ
new ImprovedMergeSort(), %oiF} >
new HeapSort() gdIk%m4
}; /Xi21W/
3P!OP{`
public static String toString(int algorithm){ _i>_S n1"
return name[algorithm-1]; `,4yGgD!4
} q{h,}[U=
!SuflGx,q
public static void sort(int[] data, int algorithm) { h;q&B9
impl[algorithm-1].sort(data); +pYgh8w@
} w10~IP
|47t+[b
public static interface Sort { ^p(aZj3k
public void sort(int[] data); A.*e8a/6X
} Rxdj}xy
g=mKTk
public static void swap(int[] data, int i, int j) { tQ@7cjq8bA
int temp = data; e
( ]]
data = data[j];
3?D,
Wu
data[j] = temp; z#gebr~_\
} {N]WVp*R
} :?~)P!/xl5