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。 0fA42*s;
插入排序: ^@ s!"c
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package org.rut.util.algorithm.support; WsRG>w3"
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import org.rut.util.algorithm.SortUtil; 44FK%TmtF
/** ! utgo/n
* @author treeroot fgg^B[(Y
* @since 2006-2-2 `M/=_O3
* @version 1.0 E9pKR+P
*/ O$u;]cg
public class InsertSort implements SortUtil.Sort{ 4r#O._Z
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/* (non-Javadoc) \DBoe:0~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '`?\CXX
*/ }MP2)6
public void sort(int[] data) { FP<RoA?W
int temp; KJWYG^zI
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9+@"DuYc6
} xal,j*
} ov: h4
} b\NWDH7}
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} H6E@C}cyM
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冒泡排序: S!.aBAW
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package org.rut.util.algorithm.support; nN>D=a"&F
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import org.rut.util.algorithm.SortUtil; 0h!2--Aur
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/** @_^QBw0
* @author treeroot %Y%+K5;AZ
* @since 2006-2-2 G}ElQD
* @version 1.0 7Z5,(dH>
*/ Ht+ng
public class BubbleSort implements SortUtil.Sort{ qY\zZ
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/* (non-Javadoc) @z"Zj 3ti
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^ L'8:
*/ K+2bNKZ0
public void sort(int[] data) { Pc{D,/EpR
int temp; lMAmico
for(int i=0;i for(int j=data.length-1;j>i;j--){ $UW!tg*U&
if(data[j] SortUtil.swap(data,j,j-1); heoOOP(#
} SFoF]U09
} vM~/|)^0sW
} i0/gyK
} s([9/ED
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} *E:w377<}
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选择排序: d=WC1"
qyl~*r*
package org.rut.util.algorithm.support; ]_I<-}?;
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import org.rut.util.algorithm.SortUtil; 5Zs"CDU
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/** 7p3 ;b"'
* @author treeroot
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* @since 2006-2-2 dgd&ymRm
:
* @version 1.0 {l{p
*/ ?I}jsm1)
public class SelectionSort implements SortUtil.Sort { +P|$T:b
7c!oFwM
/* ~6U@*Svk
* (non-Javadoc) 3Zg=ZnF
* S;NChu?8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WhE5u&`
*/ yGgHd=?
public void sort(int[] data) { `}k!SqG
int temp; <kn#`w1U'
for (int i = 0; i < data.length; i++) { LW_Y
int lowIndex = i; WzgzI/
for (int j = data.length - 1; j > i; j--) { I /3=~;u
if (data[j] < data[lowIndex]) { efMv1>{
lowIndex = j; @)&b..c?_
} C
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} +f\tqucI3
SortUtil.swap(data,i,lowIndex); Zm%}AzM
} O8SX#,3^}
} 8>j+xbw
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} FU!U{qDI
V5KAiG<d
Shell排序: W()FKP\??!
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package org.rut.util.algorithm.support; X ~4^$x
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import org.rut.util.algorithm.SortUtil; 25ul,t_Du
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/** lO%Z4V_Mj
* @author treeroot n$y1k D
* @since 2006-2-2 BdUhFN*
* @version 1.0 5yp~PhHf
*/ <| |Lj
public class ShellSort implements SortUtil.Sort{ E1 *\)q
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/* (non-Javadoc) S)VuT0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5gF}7D@
*/ JC{}iG6r+
public void sort(int[] data) { kSU*d/}*u
for(int i=data.length/2;i>2;i/=2){ h1fJ`WT6,
for(int j=0;j insertSort(data,j,i); r-]R4#z>
} @`}'P115@
} {xEX_$nv
insertSort(data,0,1); wX#\\Jgi
} U,iTURd
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/** oLruYSaD
* @param data ++,mM7a
* @param j ^!{oyw
* @param i 9<7Q {
*/ $0LlaN@e
private void insertSort(int[] data, int start, int inc) { a9QaF s"
int temp; @pytHN8( $
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1{o
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} -#<,i'
} z-7F,$
} P%Q}R[Q
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} g?j"d{.9t
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快速排序: Z I}m~7
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package org.rut.util.algorithm.support; "T}J|28Z
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import org.rut.util.algorithm.SortUtil; pe,c
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/** fbw{)SZ
* @author treeroot [n74&EH
* @since 2006-2-2 ]-x#zp;=
* @version 1.0 \vQ_:-A
*/ 7MGc+M(p
public class QuickSort implements SortUtil.Sort{ BC@"WlD
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/* (non-Javadoc) /f%u_ 8pV%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P]y2W#Rs
*/ J)jiI>
public void sort(int[] data) { WK;p[u?~xi
quickSort(data,0,data.length-1); {GWcw<g.B
} v{% /aw
private void quickSort(int[] data,int i,int j){ '2# 0UdG
int pivotIndex=(i+j)/2; =[1W.Zt
file://swap c
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SortUtil.swap(data,pivotIndex,j); KOF! a
VKik8)/.
int k=partition(data,i-1,j,data[j]);
r.K4<ly-N
SortUtil.swap(data,k,j); Fof_xv9
if((k-i)>1) quickSort(data,i,k-1); G)< k5U4
if((j-k)>1) quickSort(data,k+1,j); \re.KB#R
RtqW!ZZ:H
} B.Xm*adBT
/** ,{oP`4\Lm
* @param data W_sDF; JP
* @param i "X]ufZ7
* @param j //LXbP3/
* @return ;V@}
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*/ `gss(o1}
private int partition(int[] data, int l, int r,int pivot) { { @-Q1
do{ ?: meix
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (4g;-*N
SortUtil.swap(data,l,r); ]/$tt@h
} 'rR\H2b
while(l SortUtil.swap(data,l,r); ;m`I}h<
return l; e#zGLxa
} S0yPg9v
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} (nE$};c<b2
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改进后的快速排序: Ak_;GvC!
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package org.rut.util.algorithm.support; o9~qJnB/O
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import org.rut.util.algorithm.SortUtil; qQ1m5_OD`z
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/** T.1z<l""
* @author treeroot 6=')*_~/
* @since 2006-2-2 lA]u8+gXd
* @version 1.0 d!gm4hQhl
*/ Q|v=W C6
public class ImprovedQuickSort implements SortUtil.Sort { V_
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private static int MAX_STACK_SIZE=4096; T8Khm O
private static int THRESHOLD=10; a"&Z!A:Z=
/* (non-Javadoc) sztnRX_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mys;Il"
*/ L>L4%?
public void sort(int[] data) { b _u&%
int[] stack=new int[MAX_STACK_SIZE]; S3J6P2P
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int top=-1; &
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int pivot; DI&xTe9k
int pivotIndex,l,r; )Z;Y,g
qC6Q5F
stack[++top]=0; 't|F}@HP
stack[++top]=data.length-1; !tbRqW6v
lo(Ht=d
while(top>0){ Fza)dJ7
int j=stack[top--]; @Td[rHl
int i=stack[top--]; 6Nl$&jL
#|CG %w
pivotIndex=(i+j)/2; f0[xMn0Tu
pivot=data[pivotIndex]; ,F*e^#>
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SortUtil.swap(data,pivotIndex,j);
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W4#:_R,&,
file://partition 1mjv~W
l=i-1; 9|e"n|[
r=j; _*;cwMne-
do{ Zq`bd55~
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,v6Jr3
SortUtil.swap(data,l,r); nQP0<_S
} ag+ML1#)
while(l SortUtil.swap(data,l,r); -e)bq:T
SortUtil.swap(data,l,j); nRo`O
e;pNB
if((l-i)>THRESHOLD){ ,
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stack[++top]=i; C )I"yeS.
stack[++top]=l-1; DQ9s57VxC!
} T,IV)aq
if((j-l)>THRESHOLD){ wM yPR_
stack[++top]=l+1; n$Pv2qw
stack[++top]=j; JRiuU:=J~`
} \W\6m0-x
KXM-GIRUG
} .o-j
file://new InsertSort().sort(data); Lhc@*_2
insertSort(data); <.' cCY
} J`8>QMK^5
/** s<dD>SU
* @param data @t2 Q5c
*/ P0Jd6"sS"
private void insertSort(int[] data) { $x)'_o}e
int temp; .ClCP?HG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6X jUb
} -j$l@2g
}
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} FlgB-qR]<n
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} jQr~@15J#
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归并排序: PRLV1o1#
ljis3{kn""
package org.rut.util.algorithm.support; bOFLI#p&
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import org.rut.util.algorithm.SortUtil; eHJ7L8#
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/** ."^dJ |fN
* @author treeroot _Pz3QsV9
* @since 2006-2-2 j(BS;J$i
* @version 1.0 |HU
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*/ :aqh8bv
public class MergeSort implements SortUtil.Sort{ \|pAn
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/* (non-Javadoc) c@^:tB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F@*lR(4C
*/ ?% X9XH/!
public void sort(int[] data) { `%XgGHiE
int[] temp=new int[data.length]; MUe'xK
mergeSort(data,temp,0,data.length-1); xh6x
B|Z
} VoyH:
M"vcF5q
private void mergeSort(int[] data,int[] temp,int l,int r){ c6uKKh>
int mid=(l+r)/2; }F`Tp8/&j
if(l==r) return ; 6C0_. =7#
mergeSort(data,temp,l,mid); oto od
mergeSort(data,temp,mid+1,r); d-<y'GYw
for(int i=l;i<=r;i++){ h.9Lh ;j
temp=data; oe*&w9Y}&
} yki
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int i1=l; ^sOm7S {
int i2=mid+1; ~fF}
for(int cur=l;cur<=r;cur++){ \O8f~zA{G
if(i1==mid+1) mc+wRx
data[cur]=temp[i2++]; GufP[|7b-
else if(i2>r) R>U<8z"i
data[cur]=temp[i1++]; sKuTG93sr@
else if(temp[i1] data[cur]=temp[i1++]; 9v
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else JAb?u.,Ns_
data[cur]=temp[i2++]; PM.SEzhm
} p<zXuocQ
} cGc|n3(
lp}WB d+
} SN{*:\>,
5An0DV5
改进后的归并排序: N
Sh.g#
B
R:
package org.rut.util.algorithm.support; r^E]GDz
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import org.rut.util.algorithm.SortUtil; BXo|CITso
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/** uT/B}`md
* @author treeroot h*KHEg"+
* @since 2006-2-2 a-E-hX2
* @version 1.0 w~U`+2a3
*/ rc$!$~|I3Z
public class ImprovedMergeSort implements SortUtil.Sort { 6}T%m?/ }
W|#ev*'F
private static final int THRESHOLD = 10; euhZ4+
cXY'>N
/* --twkD
* (non-Javadoc) ]pV1T
* = b!J)]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ww($0A`ek
*/ qZJ*J+
public void sort(int[] data) { o w_y
int[] temp=new int[data.length]; 6lWFxbh
mergeSort(data,temp,0,data.length-1); e^NEj1
}
;Zq~w
mrC+J*
private void mergeSort(int[] data, int[] temp, int l, int r) { @6co\.bv
int i, j, k; ]kkBgjQbS
int mid = (l + r) / 2; M6'C 3,y0
if (l == r) yJ8}*Gj&
return; ING_:XpnJ
if ((mid - l) >= THRESHOLD) n]DN xC@b
mergeSort(data, temp, l, mid); P"x-7>c>Y
else }#G"!/ZA0:
insertSort(data, l, mid - l + 1); _Hu2[lV
if ((r - mid) > THRESHOLD) bjBeiKH
mergeSort(data, temp, mid + 1, r); )c*k_/4
else p,iCM?[|
insertSort(data, mid + 1, r - mid); q83~j`ZJ$
GD[ou.C}k
for (i = l; i <= mid; i++) { *sB-scD
temp = data; B^_Chj*m
} PGPbpl&\t
for (j = 1; j <= r - mid; j++) { I26gGp
temp[r - j + 1] = data[j + mid]; %Sn 6*\z
} :pDY
int a = temp[l]; =/g$bZ
int b = temp[r]; Ydh<T F4!
for (i = l, j = r, k = l; k <= r; k++) { 9V;$v
if (a < b) { uUz`= 4%A
data[k] = temp[i++]; !
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a = temp; @ 9 {%Kn
} else { 2d2@ J{
data[k] = temp[j--]; [9O~$! <%
b = temp[j]; E,LYS"%_
} }utNZhJ
} V`\f+Uu
}
`cP'~OT
hY}/Y
/** v0C;j(2zb
* @param data ?JgO-.
* @param l H_?B{We
* @param i hOB\n!
*/ eky(;%Sz
private void insertSort(int[] data, int start, int len) { r)p2'+}pV
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .ts0LDk0f
} 4`6c28K0?
} N<06sRg#
} V(2,\+ t
} Y#lk!#\Y
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堆排序: O<1vSav!K
~zxwg+:QO
package org.rut.util.algorithm.support; ``$%L=_m
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import org.rut.util.algorithm.SortUtil; KR=d"t Qw
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/** /c@*eU
* @author treeroot >7nV$.5S
* @since 2006-2-2 5e)6ua ,
* @version 1.0 *IWFeu7y
*/ r]8x;v1
public class HeapSort implements SortUtil.Sort{ VyWYfPK
ov`^o25f
/* (non-Javadoc) ?+n&hHRg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qByNHo7Tb
*/ i
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public void sort(int[] data) { U|J$?aFDr
MaxHeap h=new MaxHeap(); 5fu+rU-#
h.init(data); ,\lYPx\P[
for(int i=0;i h.remove(); "Ap$Jl B
System.arraycopy(h.queue,1,data,0,data.length); 2f19W#
'0
} Z'Exw-ca
ACigeK^C}E
private static class MaxHeap{ Q1`<fD
;%u_ ;,((
void init(int[] data){ StU 4{
this.queue=new int[data.length+1]; mDQEXMD
for(int i=0;i queue[++size]=data; rGnI( m.
fixUp(size); |rHG%VnBH
}
u>}w-
} U g}8y8
!/Iq{2LX
private int size=0; 0]T.Lh$3
rQ~ \~g[tP
private int[] queue; B;Xoa,
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public int get() { +@emX$cFV
return queue[1]; v2hZq-q
} A*8m8Sh$
YDQ:eebg(
public void remove() { gA~20LSt
SortUtil.swap(queue,1,size--); K(nS$x1G
fixDown(1); C4QeDvpI
} DX}B0B
file://fixdown TGU:(J'^
private void fixDown(int k) { rv9B}%e
int j; #NvQmz?J?
while ((j = k << 1) <= size) { %G;0T;0L
if (j < size %26amp;%26amp; queue[j] j++; k"xGA*B|
if (queue[k]>queue[j]) file://不用交换 {=UFk-$=
break; h+,'B&=|_
SortUtil.swap(queue,j,k); 8Y2 xW`
k = j; l0gY~T/#3
} qWsylC23
} >Z+"`"^o}
private void fixUp(int k) { m\>|C1oRy
while (k > 1) { q0,kDM66
int j = k >> 1; O:
,$%
if (queue[j]>queue[k]) }]AT _bh,
break; @j O4EEe:
SortUtil.swap(queue,j,k); q7X}MAW
k = j; r&}(9Cq&"y
} U1ZIuDg'E
} KH7VR^;mk
j-7u>s-l
} XJqTmj3
>+cSPN'i>
} .VT;H1#
;{vwBDV!'
SortUtil: lT 8#bA
3&'2aW
package org.rut.util.algorithm; <W>++< -
*7ZGq(O
import org.rut.util.algorithm.support.BubbleSort; dj'm, k
b
import org.rut.util.algorithm.support.HeapSort; ,7GWB:Sk
import org.rut.util.algorithm.support.ImprovedMergeSort; gtiE hCF2W
import org.rut.util.algorithm.support.ImprovedQuickSort; ^ eQFg>
import org.rut.util.algorithm.support.InsertSort; f-;$0mTQ
import org.rut.util.algorithm.support.MergeSort; 0n
Y6A~
import org.rut.util.algorithm.support.QuickSort; {esJ=FV\
import org.rut.util.algorithm.support.SelectionSort; U{6oLqwq3Y
import org.rut.util.algorithm.support.ShellSort; HcRa`Sfc]/
]r4bRK[1
/** 7A5p["?Z
* @author treeroot U-i.(UyZ
* @since 2006-2-2 vT|`%~Be
* @version 1.0 HPrq1QpK
*/ q:I$EpKf?Q
public class SortUtil { j 5Qo*p
public final static int INSERT = 1; ,`k_|//}=
public final static int BUBBLE = 2; K]c4"JJ
public final static int SELECTION = 3; kb71q:[
public final static int SHELL = 4; j^flwk
public final static int QUICK = 5; YEv%C|l
public final static int IMPROVED_QUICK = 6; <$%X<sDkq
public final static int MERGE = 7; -$(Jk<
public final static int IMPROVED_MERGE = 8; jMM$ d,7B
public final static int HEAP = 9; r9#
\13-
zN#*G
i'
public static void sort(int[] data) { UXT
p
sort(data, IMPROVED_QUICK); ~C-,G"zw&G
} )VSwTx&
private static String[] name={ +TK3{5`!Ae
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V
A<5uk04K
}; FmEc`N9\v
}bH$O%
private static Sort[] impl=new Sort[]{ Q8T`wd$D#
new InsertSort(), 3iRA$C-p
new BubbleSort(), ]1D%zKY%$Z
new SelectionSort(), xg<Hxn,<M
new ShellSort(), 41G5!=i
new QuickSort(), `lO(s%HC
new ImprovedQuickSort(), *wuqa)q2
new MergeSort(), r> k-KdS
new ImprovedMergeSort(), "g>.{E5
new HeapSort() )"Q*G/+2Ie
}; $Az^Y0[D
'fx UV<K&
public static String toString(int algorithm){ 9i5tVOhE
return name[algorithm-1]; K{@3\5<
} <[Q3rJ
*)<B0SjT
public static void sort(int[] data, int algorithm) { <F;v`h|+S
impl[algorithm-1].sort(data); OoBCY-gj*
} ?-MP_9!JK
*4S-z&,.c
public static interface Sort { qnM|w~G
public void sort(int[] data); :`\)
P,
} J NVr
lhH`dG D
public static void swap(int[] data, int i, int j) { ]0c+/ \b&
int temp = data; |F[=b'?
data = data[j];
\(~wZd
data[j] = temp; !ErH~<f%K
} .B72C[' c
} hB9Ee@