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。 X4d Xm>*?=
插入排序: [MV`pF)x
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package org.rut.util.algorithm.support; fC=fJZU7$
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import org.rut.util.algorithm.SortUtil; [Xxw]C6\>(
/** ^7i^ \w0
* @author treeroot
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* @since 2006-2-2 6!4';2Q
* @version 1.0 m(2G*}
*/ sFbfFUd
public class InsertSort implements SortUtil.Sort{ $a`J(I
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/* (non-Javadoc) 4a\n4KO X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xCR;
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*/ ]XmQ]Yit
public void sort(int[] data) { P#AAOSlLV
int temp; "V:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v*&Uk'4E
} Vh 2Bz
} $-m@KB
} 9uuta4&uI
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} oR-O~_)U
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冒泡排序: Gh2#-~|cB
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package org.rut.util.algorithm.support; U5|B9%:&
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import org.rut.util.algorithm.SortUtil; l<u{6o
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/** *y)4D[
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* @author treeroot #0}Ok98P
* @since 2006-2-2 )J;ny!^2
* @version 1.0 6a7vlo
*/ [m~b[ZwES
public class BubbleSort implements SortUtil.Sort{ :lgHL3yl
EC<5M5Lc
/* (non-Javadoc) $kD7y5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J
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*/ 7rH'1U
public void sort(int[] data) { [:Be[pLC
int temp; yPSVwe|g
for(int i=0;i for(int j=data.length-1;j>i;j--){ 66/Z\H^d
if(data[j] SortUtil.swap(data,j,j-1); E^7C
_JP
} aPprMQ5
} <#zwKTmK1
} XFtOmY
} PoJmW^:}
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} Nfr:`$k
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选择排序: L{!ihJr
:lNg:r$4
package org.rut.util.algorithm.support; *U
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import org.rut.util.algorithm.SortUtil; o1e4.-xI
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/** a|U}Ammr
* @author treeroot I=U+GY:
* @since 2006-2-2 l(gJLjTH%
* @version 1.0 3QIdN
*/ -RGPtD@
public class SelectionSort implements SortUtil.Sort { t
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/* %Nl`~Kz9U
* (non-Javadoc) AU/#b(mI
* itw{;j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )^&,Dj
*/ aQga3;S!
public void sort(int[] data) { %?Rs*-F.~1
int temp; e]>/H8
for (int i = 0; i < data.length; i++) { 2@sr:,\1
int lowIndex = i; yE}BfU { .
for (int j = data.length - 1; j > i; j--) { 9WOu8Ia
if (data[j] < data[lowIndex]) { d`85P+Qen|
lowIndex = j; |P>|D+I0
} U{"f.Z:Ydo
} %06vgjOa (
SortUtil.swap(data,i,lowIndex); AfN&n= d K
} ,6DD=w 0r
} }~rcrm.
/oFc03d
} vmvFBzLR
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Shell排序: ("OAPr\2dw
vm|!{5l:=y
package org.rut.util.algorithm.support; W,DZ ;).%
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import org.rut.util.algorithm.SortUtil; R+d<
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/** mGO>""<:
* @author treeroot `YU=~xQ
* @since 2006-2-2 2yvVeo&3
* @version 1.0 #\LZ;&T'N
*/ kffZElV
public class ShellSort implements SortUtil.Sort{ BY$[ g13
j AQU~Ol_
/* (non-Javadoc) -3` "E%9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N};t<Xev
*/ qJ
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public void sort(int[] data) { kQIfYtT
for(int i=data.length/2;i>2;i/=2){ Q70bEHLA
for(int j=0;j insertSort(data,j,i); Z2#`}GI_m
} l0Y?v 4
} VRtO; F
insertSort(data,0,1); IO"hF
} 7-X/>v
{\EOo-&A
/**
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* @param data 0aogBg_@K
* @param j ck$M(^)l
* @param i )km7tA
0a
*/ (8G$(MK
private void insertSort(int[] data, int start, int inc) { Pxqiv9D<R
int temp; =-Nsc1&
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ab@=cL~^
} {OCJ(^8i
} qU -!7=}7
} 3b@VY'P
};r|}v !~_
} \Tyf *:_F>
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快速排序: 84^[/d;!
E M Q4yK
package org.rut.util.algorithm.support; ;%Q&hwj
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import org.rut.util.algorithm.SortUtil; &{ ZSE^
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/** B6MkF"J<
* @author treeroot M&f#wQ
* @since 2006-2-2 RLHYw@-j@
* @version 1.0 ybE[B}pOeZ
*/ bAiJn<
public class QuickSort implements SortUtil.Sort{ B?3juyB`--
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/* (non-Javadoc) M|8
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W Y:s
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*/ 6G}c1nWU
public void sort(int[] data) { B.*"Xfr8
quickSort(data,0,data.length-1); . :a<2sp6
} TBnvV 5_
private void quickSort(int[] data,int i,int j){ ;&
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int pivotIndex=(i+j)/2; \ha-"Aqze3
file://swap )7Ixz1I9g
SortUtil.swap(data,pivotIndex,j); W5Zqgsy($F
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int k=partition(data,i-1,j,data[j]); 5un^yRMB-
SortUtil.swap(data,k,j); g<a<*)&
if((k-i)>1) quickSort(data,i,k-1); _mk5^u/u
if((j-k)>1) quickSort(data,k+1,j); |dk[cX>
H^
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} o @KW/RN"
/** 6t7fa<
* @param data vq>l>as9O
* @param i b\giJ1NJB
* @param j R=M!e<'
* @return wa ky<w,
*/ X#ZgS!Mn
private int partition(int[] data, int l, int r,int pivot) { 5)M2r!\
do{ Fw"$A0
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7ZsA5%s=,
SortUtil.swap(data,l,r); -DCa
} 4pPI'd&/7
while(l SortUtil.swap(data,l,r); WYszk ,E
return l; Q7GY3X*kA
} N4wA#\-
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} <2<87PU
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改进后的快速排序: e&1\'Zq?>
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package org.rut.util.algorithm.support; OCK>%o$[
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import org.rut.util.algorithm.SortUtil; Uc&iZFid2K
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/** mQr0sI,o]
* @author treeroot 8\#
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* @since 2006-2-2 2d`c!
* @version 1.0 *||d\peQ
*/ g_z/{1$
public class ImprovedQuickSort implements SortUtil.Sort { t&}6;z 3
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private static int MAX_STACK_SIZE=4096; rMp9jG@3
private static int THRESHOLD=10; x_!ZycEa
/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ST;t,
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*/ &&7r+.Y
public void sort(int[] data) { Oy_c
int[] stack=new int[MAX_STACK_SIZE]; > 0.W`j(s
dR+1aY;
int top=-1; 4!%F\c46
int pivot; B42sb_
int pivotIndex,l,r; Ns=AjhLc z
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stack[++top]=0; v>mn/a
stack[++top]=data.length-1; XUmR{A
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while(top>0){ \ZH&LPAY
int j=stack[top--]; qZ X/@Yxz
int i=stack[top--]; DC:)Ysuj
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pivotIndex=(i+j)/2; X?o(
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pivot=data[pivotIndex]; o2uj =Gnx
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SortUtil.swap(data,pivotIndex,j); >oJkJ$|wU
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0}
file://partition qp~gP
l=i-1; >/^#Drwb!i
r=j; UtJ a3ya
do{ `78V%\
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); k
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SortUtil.swap(data,l,r); e@n!x}t8
} L?RF;jf
while(l SortUtil.swap(data,l,r); nE|@IGH
SortUtil.swap(data,l,j); `xz&Scil
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if((l-i)>THRESHOLD){ tju|UhP3
stack[++top]=i; &`!^Zq vG
stack[++top]=l-1; aGoE,5
} c`G&KCw)d
if((j-l)>THRESHOLD){ '2nqHX
D
stack[++top]=l+1; e3m*i}K}
stack[++top]=j; A3{0q>CC
} IL!=mZ>2O
h(' )"
} t"AzI8O
file://new InsertSort().sort(data); }!s!;BOx
insertSort(data); DQXS$uBT
} :}q\tNY<
/** \a|L/9%
* @param data pq!%?m]
*/ )^O-X.1
private void insertSort(int[] data) { x\@*60o
int temp; +R.N%_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N "Wqy
} vqNsZ 8|`
} 5#2F1NX
} QIU,!w-3X
Is.WZYa
} 0l\y.
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归并排序: [QczlwmO
*"{&FEV
package org.rut.util.algorithm.support; x?yD=Mq_
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import org.rut.util.algorithm.SortUtil; _GoVx=t
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/** Pz"`MB<'Ik
* @author treeroot HOi C
* @since 2006-2-2 E]} n(
* @version 1.0 .dmi#%W
*/ d"Q |I
public class MergeSort implements SortUtil.Sort{ xN"Z1n7t
r':TMhzHq?
/* (non-Javadoc) :@3Wg3N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @QEqB_W
*/ 0pgY1i7
public void sort(int[] data) { 53OJ-m%a
int[] temp=new int[data.length]; >G"X J<IO
mergeSort(data,temp,0,data.length-1); Y}STF
} 1|QvN1?
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private void mergeSort(int[] data,int[] temp,int l,int r){ oFC)
int mid=(l+r)/2; Q<"[C
1Lj
if(l==r) return ; [=TCEU{"~
mergeSort(data,temp,l,mid); SU%DW 46
mergeSort(data,temp,mid+1,r); \h{r;#g
for(int i=l;i<=r;i++){ |M~ON=
temp=data; %y`7);.q
} yy2I2Bv
int i1=l; `
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int i2=mid+1; >^_ bD
for(int cur=l;cur<=r;cur++){ 2 WBq
if(i1==mid+1) H7g<
p"
data[cur]=temp[i2++]; !u;>Wyd W
else if(i2>r) i+vsp@d
data[cur]=temp[i1++]; u<tk G B
else if(temp[i1] data[cur]=temp[i1++]; ; y.E!
else \gO,hST
data[cur]=temp[i2++]; TH1B#Y#<J
} {rH9grb
} GG6%bF
edC4BHE
} kODK@w V-
n \G Ry'
改进后的归并排序: $1Nd_pD=
w!3>N"em
package org.rut.util.algorithm.support; (Xxn\*S
n&XGBwgW
import org.rut.util.algorithm.SortUtil; {1lO
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/** -8Ti*:
* @author treeroot NucM+r1P
* @since 2006-2-2 +|RB0}hFS-
* @version 1.0 9s$U%F6}
*/ &eZfQ27$
public class ImprovedMergeSort implements SortUtil.Sort { 1cJsj
i u]&;
private static final int THRESHOLD = 10; tpf7_YP_!-
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/* A}VYb:u/
* (non-Javadoc) 8HErE<_(
* Qo0H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r0dDHj~F
*/ 6L4$vJ
public void sort(int[] data) { M:SO2Czz
int[] temp=new int[data.length]; vA% ^`5
mergeSort(data,temp,0,data.length-1); \F6LZZ2Lv
} j|_E$L A\
NYB[Zyp
private void mergeSort(int[] data, int[] temp, int l, int r) { 12`_;[37
int i, j, k; v> z@
int mid = (l + r) / 2; P&A|PY,P
if (l == r) pxINw>\Qv
return; 30cd|
S?
if ((mid - l) >= THRESHOLD) &XLD S=j
mergeSort(data, temp, l, mid); ?w&SW{ I
else /X8<C=}
insertSort(data, l, mid - l + 1); Cpl;vQ
if ((r - mid) > THRESHOLD) ]`=X'fED
mergeSort(data, temp, mid + 1, r); ]Uc`J8p,
else 83ipf"]*
insertSort(data, mid + 1, r - mid); !fkep=
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for (i = l; i <= mid; i++) {
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temp = data; @1RP/y%
} g[z.*y/
for (j = 1; j <= r - mid; j++) { -7]Xjb5
temp[r - j + 1] = data[j + mid]; )9nElb2
} YE+$H%Jl!
int a = temp[l]; OyG"1F
int b = temp[r]; \l#>dq "Y
for (i = l, j = r, k = l; k <= r; k++) { 0lk;F
if (a < b) { b!>\2DlyJ
data[k] = temp[i++]; D^F{uDlb
a = temp; 3TuC+'`G
} else { \k8rxW
data[k] = temp[j--]; keAcKhj
b = temp[j]; }E^S]hdvz
} X=X\F@V:u
} $ItF])Bj5N
} adEJk
q 2?X"!
/** 6vzk\n
* @param data \>/M .2
* @param l HRa@
* @param i rp34?/Nz
*/ &lc8G
private void insertSort(int[] data, int start, int len) { L):qu
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); LxN*)[ Wb
} CZ{k@z`r
} ` (4pu6uT
} XR+3j/zEQ
} +FFG#6e
4jmK].
堆排序: S5=Udd"
_sHK*&W{CT
package org.rut.util.algorithm.support; dWRrG-'
``Q2P%
import org.rut.util.algorithm.SortUtil; 7YIK9edP
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/** p#8W#t$
* @author treeroot 3NK ^AaTK
* @since 2006-2-2 q`|CrOzO
* @version 1.0 < a rZbM
*/ &x:JD1T}
public class HeapSort implements SortUtil.Sort{ ztM<J+
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/* (non-Javadoc) ;."<m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WT3gNNx|
*/ uYO|5a<f~
public void sort(int[] data) { rjA@U<o
MaxHeap h=new MaxHeap(); e,1u
h.init(data); @)YY\l#
for(int i=0;i h.remove(); &R-H"kK?
System.arraycopy(h.queue,1,data,0,data.length); h5%|meZQb
} .5HQ
<!^
[~`
private static class MaxHeap{ '{?C{MK3Q
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void init(int[] data){ NY
this.queue=new int[data.length+1]; Ps[$.h
for(int i=0;i queue[++size]=data; eH>#6R1-
fixUp(size); "AueLl)
} c$E)P$<j
} `i!wq&1g7
P<dy3;
private int size=0; VkmRh,T
`\$8`Zb;
private int[] queue; H3/caN:
1cN')"
public int get() { VAQ)Hc]
return queue[1]; [.yJV`
} =5]n\"/
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public void remove() { nY-* i!H
SortUtil.swap(queue,1,size--); JyBp-ii
fixDown(1); FVWfDQ$&v
} [`fI:ao|
file://fixdown &vUq}r%P
private void fixDown(int k) { 'JmBh@A
int j; qojXrSb"y
while ((j = k << 1) <= size) { RNJFSD.
if (j < size %26amp;%26amp; queue[j] j++; Va<HU:<
if (queue[k]>queue[j]) file://不用交换 jRZ%}KX
break; 0NE{8O0;Fr
SortUtil.swap(queue,j,k); c-]fKj7
k = j; _ *(bmJM
} gvavs+H%
} cA`4:gp
private void fixUp(int k) { ~4 #B'Gy[
while (k > 1) { z5cYyx
r>
int j = k >> 1; &k>aP0k"
if (queue[j]>queue[k]) `$;+g ,
break; nL`9l1
SortUtil.swap(queue,j,k); I`B'1"{
k = j; iDb;_?
} xp \S2@<
} u</8w&!
%|Qw9sbd
} Y>6.t"?Q^
$n=lsDnhQ
} {")\0|2\x
|^n3{m
SortUtil: !>.vh]8g
nS.G~c|
package org.rut.util.algorithm; /MTf0^9
Fe=8O ^\
import org.rut.util.algorithm.support.BubbleSort; qt?*MyfV
import org.rut.util.algorithm.support.HeapSort; ?Hz2-Cn
import org.rut.util.algorithm.support.ImprovedMergeSort; &_-](w`
import org.rut.util.algorithm.support.ImprovedQuickSort; L K7Xw3
import org.rut.util.algorithm.support.InsertSort; , |E$'
import org.rut.util.algorithm.support.MergeSort; HxwlYx,4
import org.rut.util.algorithm.support.QuickSort; $xW**&
import org.rut.util.algorithm.support.SelectionSort; V^fV7hw<
import org.rut.util.algorithm.support.ShellSort; >l1r,/\\
x"B'zP
/** kT oOIx
* @author treeroot b Y8GA
* @since 2006-2-2 M?&zY
"c
* @version 1.0 xF8S*,#,*
*/ I}0_nge
public class SortUtil { J1F{v)T'?
public final static int INSERT = 1; NP
t(MFK\
public final static int BUBBLE = 2; b{[*N
public final static int SELECTION = 3; 4SVW/Zl.?
public final static int SHELL = 4; Di(9]:+
public final static int QUICK = 5; :b#%C
pR
public final static int IMPROVED_QUICK = 6; QTJu7^O9
public final static int MERGE = 7; JJk#,AP
public final static int IMPROVED_MERGE = 8; a:!uORQby
public final static int HEAP = 9; pa/9F[
#gZ|T
M/h
public static void sort(int[] data) { ~9M!)\~
sort(data, IMPROVED_QUICK); MiGcA EF;
} n'w,n1z7
private static String[] name={ @'jfKW
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -;c
}; 6SEltm(
yY=<'{!
private static Sort[] impl=new Sort[]{ c[(Pg%
new InsertSort(), n~r 9!m$<
new BubbleSort(), !vqC+o>@
new SelectionSort(), Jbw!:x
[
new ShellSort(), HkjEiU
new QuickSort(), 'p}`i/
new ImprovedQuickSort(), dk5|@?pe
new MergeSort(), ]|oJ)5P
new ImprovedMergeSort(), .[pUuVq]
new HeapSort() F'W>
8
}; Hcv u7uD
4br6$
public static String toString(int algorithm){ U6j/BJT"
return name[algorithm-1]; ^X1wI9V
} &d^=siL
+<(a}6dt
public static void sort(int[] data, int algorithm) { &^QPkX@p
impl[algorithm-1].sort(data); AlX3Wv}
} :=!Mh}i
DdjCn`jqlf
public static interface Sort { 2<6j1D^jM
public void sort(int[] data); Z7#7N wy4
} Os&1..$Nb
H!eh
J$[
public static void swap(int[] data, int i, int j) { ,x#ztdvr
int temp = data; McP.9v}H0_
data = data[j]; "sbBe73 m
data[j] = temp; Lo`F
} 4M`Xrfwm'[
} `iYc<N`