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。 VE4Z;Dr"
插入排序: ?k lV;+
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package org.rut.util.algorithm.support; i^c
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import org.rut.util.algorithm.SortUtil; =NyN.^bwT
/** gTz66a@i
* @author treeroot &3x
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* @since 2006-2-2 =>
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* @version 1.0 OrXx0Hn
*/ \;0J6LBc
public class InsertSort implements SortUtil.Sort{ d4"KM+EP?
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/* (non-Javadoc) R|PFGhi6"A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x:TBZh?@$
*/ s>Eu[uA
public void sort(int[] data) { zz ^2/l
int temp; 65FdA-4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z7+y{-{Z
} ],ow@}
} 6d~[M y
} +MG(YP/l
WNkAI9B
} QJFx/zU
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冒泡排序: 76[O3%
MpbH!2J
package org.rut.util.algorithm.support; }8E//$J
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import org.rut.util.algorithm.SortUtil; {e,m<mAi
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/** h,Y MR3:X
* @author treeroot {r2-^QHF
* @since 2006-2-2 &&e{ 9{R
* @version 1.0 l" y==y
*/ XAuB .)|
public class BubbleSort implements SortUtil.Sort{ tN|sHgs
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/* (non-Javadoc) D$k40Mz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x;NCW
*/
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public void sort(int[] data) { t?^C9(;6
int temp; 6,'v
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for(int i=0;i for(int j=data.length-1;j>i;j--){ 'tK5s>gv<
if(data[j] SortUtil.swap(data,j,j-1); ocwRU0+j
} >b;fhdd:4
} Qg+0(odd
} 2Mx9Kd'a
r
} P>%\pCJ])
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} CQfrAk4mu
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选择排序: b?h9G3J_a
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package org.rut.util.algorithm.support; k))*Sg
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import org.rut.util.algorithm.SortUtil; za7h.yK }
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/** iZ+\vO?|
* @author treeroot bL5z%bV
* @since 2006-2-2 Ee>P*7*jB
* @version 1.0 G~T]m .
*/ tYyva
public class SelectionSort implements SortUtil.Sort { le`&VdE^
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/* yv4ki5u`
* (non-Javadoc) ?}%Gr,tj2
* haW8zb0z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kg&{
?&
*/ xd8UdQ,lt
public void sort(int[] data) { RsU=fe,
int temp; J=>?D@K
for (int i = 0; i < data.length; i++) { (5?5? <
int lowIndex = i; $enh>!mU
for (int j = data.length - 1; j > i; j--) { 7\d{F)7E
if (data[j] < data[lowIndex]) { hi,!
lowIndex = j; \/4ipU.
} dz.]5R
} Ojp)OeF\
SortUtil.swap(data,i,lowIndex); 8%JxXtWW`
} zLXmjrC
} YKLh$
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} TCp!4-~,
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Shell排序: AY:3o3M
k|-`d
package org.rut.util.algorithm.support; vP&dvAUF
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import org.rut.util.algorithm.SortUtil; exV6&bdu
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/** T^NY|Y/
* @author treeroot n1o/-UY
* @since 2006-2-2 0.O pgv2K
* @version 1.0 @/yRE^c
*/ WKX5Dl
public class ShellSort implements SortUtil.Sort{ V4qHaG
%@ $h?HP
/* (non-Javadoc) ]R}#3(]1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #h ;j2
*/ IGT~@);
public void sort(int[] data) { wQ!~c2a<8
for(int i=data.length/2;i>2;i/=2){ 9:A>a3KOH
for(int j=0;j insertSort(data,j,i); Rp A76ug
} C!XI0d
} +@]1!|@(
insertSort(data,0,1); YS?P A#
} m0 ]LY-t
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/** q?8MKf[N
* @param data Y+iC/pd
* @param j :tdx:
* @param i BQSA;;n]
*/ qh0)~JL4
private void insertSort(int[] data, int start, int inc) { 5h1!E
int temp; ,TOLr%+v~n
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7EY~5U/4
} Y@KZ:0<
} &Xe r#6~
} Yp 6;Y7^
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} Qat%<;P2
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快速排序: @M#2T
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package org.rut.util.algorithm.support; |rdG+>
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import org.rut.util.algorithm.SortUtil; q-RGplx
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/** [D,:=p`
* @author treeroot I,S'zHR
* @since 2006-2-2 a(7ryl~c=
* @version 1.0 P~ykC{nD
*/ HUghl2L.<
public class QuickSort implements SortUtil.Sort{ `u}x:f !
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/* (non-Javadoc) |.
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S?{5DxilO
*/ WAa?$"U2
public void sort(int[] data) { yRznP)
quickSort(data,0,data.length-1); gfYB|VyWo
} W<4\4
private void quickSort(int[] data,int i,int j){ moR]{2Cd{
int pivotIndex=(i+j)/2; /OP*ARoC21
file://swap HZm
i?
SortUtil.swap(data,pivotIndex,j); uaKB
#SYWAcTkO}
int k=partition(data,i-1,j,data[j]); caP
SortUtil.swap(data,k,j); rTm{-b)r
if((k-i)>1) quickSort(data,i,k-1); *I67SBt
if((j-k)>1) quickSort(data,k+1,j); ETOc4hMO
Wa(S20yF
} <C77_t
/** W,~1KUTc
* @param data J$Epj
* @param i %Let AR
* @param j @QG1\W'
* @return s]c$]&IGG
*/ HWhKX:`l
private int partition(int[] data, int l, int r,int pivot) { DKl7|zG4
do{ 3\+p1f4
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gcxk'd
SortUtil.swap(data,l,r); ra>`J_
} ^rwSbM$
while(l SortUtil.swap(data,l,r); \2pFFVT
return l; At(9)6n8
} u`@f~QP0
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} 6t:c]G'J
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改进后的快速排序: qJU)d
Jt6J'MOq
package org.rut.util.algorithm.support; Y}uQ`f
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import org.rut.util.algorithm.SortUtil; 0@lC5-=
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/** io7U[ #
* @author treeroot j7#GqVS'
* @since 2006-2-2 b:Kw_Q
* @version 1.0 1:zu$|%7
*/ ;Ia1L{472m
public class ImprovedQuickSort implements SortUtil.Sort { 2?iOB6
V2{#<d-T!
private static int MAX_STACK_SIZE=4096; Us,[x Q
private static int THRESHOLD=10; ;-pvc<_c<
/* (non-Javadoc) e[mhbFf-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3C=clB9<
*/ R.IUBw5;/
public void sort(int[] data) { k(z<Bm
int[] stack=new int[MAX_STACK_SIZE]; $H-D9+8 7
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int top=-1; 8UT%:DlxQ
int pivot; ?w37vsN
int pivotIndex,l,r; l$VxE'&LQ
LQ\
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stack[++top]=0; nP\V1pgA
stack[++top]=data.length-1; A?D"j7JD=L
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while(top>0){ 9id~NNr7
int j=stack[top--]; K=Z]#bm
int i=stack[top--]; L\Fu']l
207 O["Y
pivotIndex=(i+j)/2; %Mng8r
pivot=data[pivotIndex]; bI]UO)
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SortUtil.swap(data,pivotIndex,j); jUJTcL
TdP{{&'9
file://partition ?[S
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l=i-1; R_>TEYZ
r=j; vbA7I<;
do{ m-'(27
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); VUy)4*
SortUtil.swap(data,l,r); A_jB|<bjTP
} ,/?%y\:J
while(l SortUtil.swap(data,l,r); F7Dc!JNa
SortUtil.swap(data,l,j); h76NR
9U7Mu;4
if((l-i)>THRESHOLD){ g/l0}%
stack[++top]=i; !q-:rW?c
stack[++top]=l-1; J[<pZ
[
} uZ/7t(fy
if((j-l)>THRESHOLD){
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stack[++top]=l+1; +f\pk \Ith
stack[++top]=j; sm2p$3v
} hnsa)@
jA-5X?!In
} rKzv8d
file://new InsertSort().sort(data); I(^jOgYU
insertSort(data); 7~kpRa@\P
} xxLgC;>[
/** J-, H6u
* @param data hsHVX[<5`
*/ Ez/\bE
private void insertSort(int[] data) { vLnq%@x
int temp; "#-Nqq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6bbZ<E5At
} .7pGx*WH^Y
} x2j/8]'o
} vh|Tb5W<
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} t+=1 2{9;f
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归并排序: H
_Zo@y~J
bK03S Vx
package org.rut.util.algorithm.support; f?=r3/AO
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import org.rut.util.algorithm.SortUtil; ]]p19 [4s
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/** Y!++CMzU
* @author treeroot #&^ZQs<
* @since 2006-2-2 [{S;%Jj*X/
* @version 1.0 O`wYMng)
*/ \6`v.B&v
public class MergeSort implements SortUtil.Sort{ 0Jm]f/iZ
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/* (non-Javadoc) 4R&*&GZ#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !lR0w|
*/ /]ku$.mr\
public void sort(int[] data) { o"'iXUJ
int[] temp=new int[data.length]; `fQM
mergeSort(data,temp,0,data.length-1); 0s860Kn
} ]s*5[=uc2
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private void mergeSort(int[] data,int[] temp,int l,int r){ r_4TtP&UW
int mid=(l+r)/2; kRmj"9oA
if(l==r) return ; KK:N [x
mergeSort(data,temp,l,mid);
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mergeSort(data,temp,mid+1,r);
n=f`AmF;
for(int i=l;i<=r;i++){ [X;>*-
temp=data; B }6Kd
} &g*klt'B
int i1=l; OI~}e,[2z
int i2=mid+1; 3H1Pp*PH
for(int cur=l;cur<=r;cur++){ E;9Z\?P
if(i1==mid+1)
%)pP[[h
data[cur]=temp[i2++]; %/P=m-K
else if(i2>r) N g58/}zO
data[cur]=temp[i1++]; S*4f%!
else if(temp[i1] data[cur]=temp[i1++]; 3"5.eZSOW
else ;xL67e%?
data[cur]=temp[i2++]; R"NGJu9
} T'hml
} aw1P5aPmX
S2ark,sp6
} TW>?h=.z
rxQ<4
改进后的归并排序: 0[.3Es:_
_HwpPRVP/
package org.rut.util.algorithm.support; mn.`qfMh
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import org.rut.util.algorithm.SortUtil; S0F@#mSQ?
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/** ` "B^{o
* @author treeroot kg:l:C)Tq
* @since 2006-2-2 ?gLAWz
* @version 1.0 T:U4:"
*/ ;J'OakeVO
public class ImprovedMergeSort implements SortUtil.Sort { ?!H)zz6y
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private static final int THRESHOLD = 10; }?J~P%HpF
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/* n? ]f@O R
* (non-Javadoc) Z9xR
* PT+c&5A S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A';n6ne%i
*/ [yC"el6PM
public void sort(int[] data) { rhIGOk1k
int[] temp=new int[data.length]; ~Zmi(Ra
mergeSort(data,temp,0,data.length-1); O] H=s
} )
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private void mergeSort(int[] data, int[] temp, int l, int r) { =5Wp&SM6
int i, j, k; x<@kjfm5
int mid = (l + r) / 2; o!utZmk$
if (l == r) ,%Z&*n
return; k-Fdj5/
if ((mid - l) >= THRESHOLD) C3)|<E
mergeSort(data, temp, l, mid); ;R!*I%
else jN6b*-2
insertSort(data, l, mid - l + 1); "J!}3)n
if ((r - mid) > THRESHOLD) |!Fk2Je,
mergeSort(data, temp, mid + 1, r); sMm/4AY]
else )v1CC..
insertSort(data, mid + 1, r - mid); H|`R4hAk
2e.N"eLNt
for (i = l; i <= mid; i++) { ~:EW>Fq%i
temp = data; @!<d0_dnC
} _f3
WRyN0
for (j = 1; j <= r - mid; j++) { SdxY>;
temp[r - j + 1] = data[j + mid]; Vho0eV=
} 9 mPIykAj8
int a = temp[l]; i3PKqlp.
int b = temp[r]; 8*s7m
for (i = l, j = r, k = l; k <= r; k++) { @rwU 1T33
if (a < b) { q}wj}t#
data[k] = temp[i++]; 9cfR)*Q
a = temp; kaQ2A
} else { J &{xP8uq_
data[k] = temp[j--]; Z>2]Xx%
\
b = temp[j]; LeHiT>aX!
} 7F(5)Utt
} <GF @L
} $"8d:N?I[
n+;vjVS%
/** _faJ B@a_
* @param data I60DUuF
* @param l //.>>-~1m
* @param i XdsJwn F
*/ =nU/ [T.
private void insertSort(int[] data, int start, int len) { QU/3X 1W
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O?ktWHUx
} i2PZ'.sL
} >uy%-aXiVa
} _]|Qec)
} u9]1X1wV
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堆排序: = .`jjDJ
`#6x=24
package org.rut.util.algorithm.support; S LGW:
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import org.rut.util.algorithm.SortUtil; vPmnN^
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/** 4D"4zp7
* @author treeroot ;%zC@a~{
* @since 2006-2-2 qn"K9k
* @version 1.0 H}nJbnU
*/ SDBt @=Nl
public class HeapSort implements SortUtil.Sort{ EJm4xkYLj1
CWlW/>yF
B
/* (non-Javadoc) ue0s&WF|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H+l,)Se
*/ GGnp Pp
public void sort(int[] data) { Eg8i _s~:
MaxHeap h=new MaxHeap(); WRpyr
h.init(data); };S0 G!
for(int i=0;i h.remove(); 'fY9a(Xt.
System.arraycopy(h.queue,1,data,0,data.length); lS9n@
} Gvx[8I
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private static class MaxHeap{ fKkjn4&W
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void init(int[] data){ Tbf:eVIG
this.queue=new int[data.length+1]; '*!L!VJ
for(int i=0;i queue[++size]=data; _H\<[-l
fixUp(size); CAgaEJhX3
} \Tm}mAvK/o
} &s
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: F9|&q-W,
private int size=0; )2.)3w1_4
)Yj%#
private int[] queue; "JT;gaEm
4/*q0M{}B
public int get() { OJ,m1{9$}
return queue[1]; C}"@RHEu
} UI?=]"
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public void remove() { 5H
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SortUtil.swap(queue,1,size--); Mv|!2 [:
fixDown(1); BD*G1k_q
} -dRFA2Y
file://fixdown $p$dKH
private void fixDown(int k) { JN[0L:
int j; e!X(yJI[O6
while ((j = k << 1) <= size) { VLI'
if (j < size %26amp;%26amp; queue[j] j++; O\Eqr?%L)
if (queue[k]>queue[j]) file://不用交换 eegx'VSX4
break; jP=Hf=:$
SortUtil.swap(queue,j,k); n=!uNu7
k = j; o"q+,"QL
} OW5t[~y]
} VmvQvQ/9R
private void fixUp(int k) { $3;Upgv
while (k > 1) { FFcB54ALTf
int j = k >> 1; r>|-2}{N/
if (queue[j]>queue[k]) ;YH[G;aJ
break; 2<r\/-#pU
SortUtil.swap(queue,j,k); ai-n z-;
k = j; mTf<
} Qvqqvk_tv
} s&tE_
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} SvuTc!$?
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} =r4!V>
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SortUtil: (03pJV&K
Zi
ESlf$
package org.rut.util.algorithm; Q*ju
sm
k$"d^*R
import org.rut.util.algorithm.support.BubbleSort;
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import org.rut.util.algorithm.support.HeapSort; WeJ@xL
import org.rut.util.algorithm.support.ImprovedMergeSort; <+U|dX
import org.rut.util.algorithm.support.ImprovedQuickSort; r o\1]`6
import org.rut.util.algorithm.support.InsertSort; E4oz|2!m
import org.rut.util.algorithm.support.MergeSort; 'Pd(\$ZY
import org.rut.util.algorithm.support.QuickSort; pGGmA;TC1
import org.rut.util.algorithm.support.SelectionSort; B$a-og(
import org.rut.util.algorithm.support.ShellSort; jAhP>
t:
gNj7@bX~
/** h5~n 1qX
* @author treeroot SreYJT%
* @since 2006-2-2 {=Q7m`1
* @version 1.0 {6,|IGAq
V
*/ /iQ(3F
public class SortUtil { M"Y0jQ(
public final static int INSERT = 1; = !2NU
public final static int BUBBLE = 2; "&o,yd%
public final static int SELECTION = 3; %,V
YiW0
public final static int SHELL = 4; Jfhk@27T
public final static int QUICK = 5; *I*i>==Z
public final static int IMPROVED_QUICK = 6; [0@`wZ
public final static int MERGE = 7; 6(V
/yn~
public final static int IMPROVED_MERGE = 8; HEF?mD3h
public final static int HEAP = 9; L8$1K &!
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public static void sort(int[] data) { EtJ8^[u2J
sort(data, IMPROVED_QUICK); 2KJ1V+g@a6
}
6ghx3_%w
private static String[] name={ vfc[p ^
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l]LxL
}; Wch~Yb
ot%.M*h-
private static Sort[] impl=new Sort[]{ V%ii3
new InsertSort(), </~ 6f(mg
new BubbleSort(), F2I 5qC/
new SelectionSort(), 3'I^lc
new ShellSort(), @cvP0A
new QuickSort(), =t0tK}Y+4
new ImprovedQuickSort(), a:rX9-**
new MergeSort(), d j5hv~
new ImprovedMergeSort(), J ++v@4Z
new HeapSort() J5p8nmb
}; 0BU=)Swku
NTs7KSgZ
public static String toString(int algorithm){ |i%2%V#
return name[algorithm-1]; S/A1RUt
} 8/%6@Y"Y*
4mYCSu14:`
public static void sort(int[] data, int algorithm) { y0bq;(~X~
impl[algorithm-1].sort(data); _k66Mkd#b
} 2a=sm1?
o+ O}Te
public static interface Sort {
m]Y;c_DO:
public void sort(int[] data); Gs0H@
} f i~I@KJ>
Tenf:Hm/k
public static void swap(int[] data, int i, int j) { XVVD 0^ Q
int temp = data; f'En#-?O
data = data[j]; 0DPxW8Y -`
data[j] = temp; ,I.WX,OR
} ,?cH"@RJ
} U7$WiPTNL9