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。 FHZQyO<|
插入排序: ^|%7}=e
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package org.rut.util.algorithm.support; g_MxG!+(V
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import org.rut.util.algorithm.SortUtil; ZF;s`K)
/** -.7UpDg~
* @author treeroot uulzJbV,K
* @since 2006-2-2 4yR X{Bl|
* @version 1.0 %lN4"jtx
*/ M0uC0\'#P
public class InsertSort implements SortUtil.Sort{ .+ CMm5T
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/* (non-Javadoc) -<q@0IYyi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qk\LfRbj
*/ V?z-Dt C
public void sort(int[] data) { x!9bvQT
int temp; coc:$Sr%
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O9MBQNwjA
} hHqsI`7c
} LfG$?<}hR
} Fk&A2C}$b
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} Y]HtO^T2
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冒泡排序: Hbz,3{o5
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package org.rut.util.algorithm.support; / ,
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import org.rut.util.algorithm.SortUtil; #.~lt8F
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/** &pLCN[a
* @author treeroot |0aGX]Y
* @since 2006-2-2 !fG`xZ~
* @version 1.0 I KDh)Zm
*/ G X>T~i\f8
public class BubbleSort implements SortUtil.Sort{ aOo;~u2-=
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/* (non-Javadoc) uB uwE6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jj"?#`cW
*/ .(8eWc YK
public void sort(int[] data) { Rk52K*Dc
int temp; .FAuM~_99b
for(int i=0;i for(int j=data.length-1;j>i;j--){ TGQDt|+Z
if(data[j] SortUtil.swap(data,j,j-1); } T<oLvS
} mnWbV\ VY
} oq }Q2[.b
} 9]TvLh3
} +S>}<OE
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} $8,/[V
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选择排序: HxH=~B1"P
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package org.rut.util.algorithm.support; W&(98}oT
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import org.rut.util.algorithm.SortUtil; 1)f~OL8o
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/** 8q&*tpE
* @author treeroot = g)G!
* @since 2006-2-2 Nd4!:.
* @version 1.0 V2?&3Z)W
*/ vVi))%&S(
public class SelectionSort implements SortUtil.Sort { R]{AJ"p
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/* )\TI^%s
* (non-Javadoc) zx{O/v
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* #GHLF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8QGj:3
*/ Wd_cNR\
public void sort(int[] data) { ihJC)m`Hbl
int temp; Soa5TM
for (int i = 0; i < data.length; i++) { D%Y{(l+X
int lowIndex = i; MrA&xM
for (int j = data.length - 1; j > i; j--) { :J}@*>c
if (data[j] < data[lowIndex]) { h}U\2$5
lowIndex = j; r.:H`
} rn?:utP
} x@]pUA1
SortUtil.swap(data,i,lowIndex); <IBzh_
} vK\;CSk
} emV@kN.
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} ?DC3BA\)
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Shell排序: h?:lO3)TL=
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package org.rut.util.algorithm.support; ?_F,HhQ
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import org.rut.util.algorithm.SortUtil; .#;;pu7W
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/** $W8
* @author treeroot sS $- PX
C
* @since 2006-2-2 snBC +`-
* @version 1.0 |j
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*/ X~Li`
public class ShellSort implements SortUtil.Sort{ d*lnXzQor
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/* (non-Javadoc) WbS2w @8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U jC$Mi`O
*/ XRI1/2YA
public void sort(int[] data) { OwQ 9y<v
for(int i=data.length/2;i>2;i/=2){ V\kf6E
for(int j=0;j insertSort(data,j,i); $s hlNW\
} [PrR30:
} $2^V#GWo
insertSort(data,0,1); A]{8=
} 6!i0ioZzi0
IjDG
/** 'lv\I9"S)
* @param data w<awCp
* @param j A;h0BQm/j
* @param i P$@5&/]
*/ 'MM#nQ\(
private void insertSort(int[] data, int start, int inc) { ;1cX|N=
int temp; (0"9562
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); AdB5D_ Ir
} odquAqn
} e@L'H)w,
}
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/
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} {61NLF\0H
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快速排序: -Tk~c1I#`
HF5aU:M
package org.rut.util.algorithm.support; 2u6N';jgZ
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import org.rut.util.algorithm.SortUtil; C
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/** .d9VV&
* @author treeroot qB7.LR*'
* @since 2006-2-2 T_, LK7D
* @version 1.0 PF!Q2t5c3
*/ ix]3t^
public class QuickSort implements SortUtil.Sort{ mb?DnP,z
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/* (non-Javadoc) vUgLWd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t_,iV9NrZ
*/ CQ"IL;y
public void sort(int[] data) { f<WnPoV
quickSort(data,0,data.length-1); _e8@y{/~Fd
} K~@-*8%
private void quickSort(int[] data,int i,int j){ \Ul*Nsw
int pivotIndex=(i+j)/2; Sd^e!?bp
file://swap j>?H^fB
SortUtil.swap(data,pivotIndex,j); rQ*'2Zf'<
bg_Zf7{
int k=partition(data,i-1,j,data[j]); -j]r\EVKS
SortUtil.swap(data,k,j); \p@,+ -gX
if((k-i)>1) quickSort(data,i,k-1); Y#{KGVT<
if((j-k)>1) quickSort(data,k+1,j); >}O1lsjW:z
R.|fc5_"+
} m2{z
/** ))G%C6-
* @param data
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* @param i d)r=W@tF]
* @param j ,$vc*}yI0
* @return ui G7
*/ u/y`M]17
private int partition(int[] data, int l, int r,int pivot) { P!B\:B%4~]
do{ A~I}[O~(pb
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); t wtGkkC
SortUtil.swap(data,l,r); WU#bA|Cf
} Qh/yPOSm:
while(l SortUtil.swap(data,l,r); DWk'6;e4j
return l; vT%rg r
} SY <!-g<1F
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} '4dnC2a]
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改进后的快速排序: XV %L6x
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package org.rut.util.algorithm.support; +*)B;)P
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import org.rut.util.algorithm.SortUtil; m++VW0Y>
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/** >\}2("bv
* @author treeroot Iy|]U&`
* @since 2006-2-2 l+R-lsj
* @version 1.0 9N=Dls
*/ rI;e!EW
public class ImprovedQuickSort implements SortUtil.Sort { $3Wl~
G}
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private static int MAX_STACK_SIZE=4096; L-@j9hU{
private static int THRESHOLD=10; c0!bn b
/* (non-Javadoc) 5>}L3r>a;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C"IPCJYn
*/ }4_izKS
public void sort(int[] data) { ?PyI#G
int[] stack=new int[MAX_STACK_SIZE]; [^ 7^&/0
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int top=-1; D9#e2ex]
int pivot; V%e'H>EC
int pivotIndex,l,r; ]Z<{
~
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stack[++top]=0; z%+?\.oH
stack[++top]=data.length-1; u"pn'H
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while(top>0){ SGNi~o
int j=stack[top--]; JguE#ob2
int i=stack[top--]; z?j~ 2K<4
b LL!iz?
pivotIndex=(i+j)/2; cQ3Dk<GZ
pivot=data[pivotIndex]; #ye++.7WK
v`y{l>r,
SortUtil.swap(data,pivotIndex,j); {v;Y}o-p
C/!2q$
file://partition 2R2Z6}
l=i-1; u^ngD64
r=j; P>4(+s
do{ m&2<?a}l
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L8 R|\Bx
SortUtil.swap(data,l,r); zq{L:.#ha
} C+y:<oo)
while(l SortUtil.swap(data,l,r); %@H;6
SortUtil.swap(data,l,j); VWLou
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if((l-i)>THRESHOLD){ ##k=='dR
stack[++top]=i; :kY][_
stack[++top]=l-1; *e_ /D$SC
} De4+4&
if((j-l)>THRESHOLD){ <FGNV+?%e
stack[++top]=l+1; E@t~juF!
stack[++top]=j; A`X$jpAn&
} T!v%NZj3
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} (U$ F) 7
file://new InsertSort().sort(data); 5G\vV]RR&
insertSort(data); \:-; {
} `n5)oU2q
/** $[FO(w@f
* @param data U&`M G1uHe
*/ oWx!
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private void insertSort(int[] data) { @xO<~
int temp; ZZl)p\r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Eer rIV
} #1V vK
} /A<L
} pmQ9iA@=
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QT0
} K-p1v!IC
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归并排序: 8b|&
3&3S*1b-H
package org.rut.util.algorithm.support; &*MwKr<y
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import org.rut.util.algorithm.SortUtil; ";s?#c
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/** =<a`G3SY!
* @author treeroot p jHUlQ
* @since 2006-2-2 a{Tv#P*!
* @version 1.0 mNcTO0p&
*/ =wI,H@
public class MergeSort implements SortUtil.Sort{ ` [@
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/* (non-Javadoc) oh#6>|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,Qj7wFZ
*/
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public void sort(int[] data) { qrm~=yU%
int[] temp=new int[data.length]; H$;K(,'
mergeSort(data,temp,0,data.length-1); p0'A\@|
} V><5N;w
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private void mergeSort(int[] data,int[] temp,int l,int r){ ~G5)ya-
int mid=(l+r)/2; hD # Yz<
if(l==r) return ; M<g>z6
mergeSort(data,temp,l,mid);
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mergeSort(data,temp,mid+1,r); ldi'@^
for(int i=l;i<=r;i++){ ,C(")?4aJ
temp=data; K^s!0[6
} C x$|7J=O
int i1=l; UiaY0 .D
int i2=mid+1; zOWbdd_zl
for(int cur=l;cur<=r;cur++){ f }eZX
if(i1==mid+1) :m^eNS6:
data[cur]=temp[i2++]; N;<<-`i
else if(i2>r) im4V6 f;%
data[cur]=temp[i1++]; rK}*Uwut
else if(temp[i1] data[cur]=temp[i1++]; ##1[/D(
else \W}?4kz
data[cur]=temp[i2++]; WR gAc%
} 2/qfK+a
} &{/ `Q,
O' A''}M
} { S4?L8
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改进后的归并排序: Q5{i#F7nJm
IkL|bV3E0
package org.rut.util.algorithm.support; :}e*3={4
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import org.rut.util.algorithm.SortUtil; .2[>SI
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/** ^\{%(i9
* @author treeroot ^e<0-uM"s
* @since 2006-2-2 zZ
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* @version 1.0 _"##p
*/ pkjL2U:
public class ImprovedMergeSort implements SortUtil.Sort { a}0\kDe
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private static final int THRESHOLD = 10; qW$IpuK
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/* E;| q
* (non-Javadoc) L8/o9N1
* hTf]t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i1\xZ<|0
*/ =pN?h<dc
public void sort(int[] data) { Xv9kJ
int[] temp=new int[data.length]; .LN&EfMenF
mergeSort(data,temp,0,data.length-1); !+JSg uy
} u}qfwVX Z
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private void mergeSort(int[] data, int[] temp, int l, int r) { 6V*@
{
int i, j, k; vn6/H8
int mid = (l + r) / 2; 3)EslBA7i
if (l == r) ~}$:iyJV(>
return; K>w}(td
if ((mid - l) >= THRESHOLD) +mMn1&
mergeSort(data, temp, l, mid); < 5;0LPU
else -r/# 20Y
insertSort(data, l, mid - l + 1); bhnm<RZ
if ((r - mid) > THRESHOLD) m/cbRuPWgP
mergeSort(data, temp, mid + 1, r); 8 y/YX
else *8kg6v%
insertSort(data, mid + 1, r - mid); =_D82`p
-Z4J?b
for (i = l; i <= mid; i++) { lVARe3#
temp = data; DTlM}
} nxA]EFS
for (j = 1; j <= r - mid; j++) { `IFt;Ja\6
temp[r - j + 1] = data[j + mid]; 0A9x9l9Wd
} WFjNS'WI_
int a = temp[l]; D3HE~zkI
int b = temp[r]; <E&1HeP
for (i = l, j = r, k = l; k <= r; k++) { D$YAi%*H
if (a < b) { j/#kO?
data[k] = temp[i++]; V`pTl3
a = temp; ;]i&AAbj
} else { 7iLm_#M
data[k] = temp[j--]; nyw, Fu
b = temp[j]; )j',e$m
} vD[@cm
} gD@ &/j7
} UH%oGp$ykX
o!aKeM~|Es
/** % 95:yyH 0
* @param data TEh]-x`
* @param l O->i>d
* @param i <{[AG3/Zj4
*/ qaA\.h7
private void insertSort(int[] data, int start, int len) { })M$#%(
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); A AH-Dj|&l
} o~NeS|a
} ?\<2*sW [k
} d?v#gW
} _-o*3gmbQ
3+EJ%
堆排序: E,c~.jYc
k]qZOO}
package org.rut.util.algorithm.support; = EyxM
CbQ@l@d]
import org.rut.util.algorithm.SortUtil; kZU8s'C
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/** q&<#)#+
* @author treeroot Zv7@
* @since 2006-2-2 L}XEROTR
* @version 1.0 Dr6Br<yi
*/ $\81WsL'
public class HeapSort implements SortUtil.Sort{ \S=!la_T@m
umcbIi('
/* (non-Javadoc) ,^26.p$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S4qh8c
*/ ]1)@.b;QR
public void sort(int[] data) { ,\+tvrR4X
MaxHeap h=new MaxHeap(); <j ;HRm
h.init(data); :`:<JA3,
for(int i=0;i h.remove(); nd3]&occ
System.arraycopy(h.queue,1,data,0,data.length); thipfS
} t<ftEJU"'w
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private static class MaxHeap{ pqMvYF
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void init(int[] data){ iBp 71x65
this.queue=new int[data.length+1]; 2mu~hJ
for(int i=0;i queue[++size]=data; F#X\}MvEU
fixUp(size); }2`S@Rq.WW
} <Ks?g=K-
} /D1Bf:'(
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private int size=0; %bDd
hf:n!+,C
private int[] queue; ?=r!b{9
j@GMZz<
public int get() { 1Y}gki^F
return queue[1]; RVI],O
} ^3=8*Xr
)Bb :tz+
public void remove() { EF"ar
SortUtil.swap(queue,1,size--); ,J}lyvkd
fixDown(1); mNb+V /*x3
} <(BA ws(X
file://fixdown F<V
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private void fixDown(int k) { _JR4
PKtx
int j; Z]w_2- -
while ((j = k << 1) <= size) { O])/kS`
if (j < size %26amp;%26amp; queue[j] j++; WCR+ZXI?1
if (queue[k]>queue[j]) file://不用交换 /3KEX{'@U
break; 2mU}"gf[
SortUtil.swap(queue,j,k); ?ZDx9*f
k = j; U-WrZ|-
} X\1D[n:
} (a^F`#]
private void fixUp(int k) { XJ?@l3D:
while (k > 1) { A]H+rxg
int j = k >> 1; h$ZF[Xbfe
if (queue[j]>queue[k]) n0vPW^EQ
break; SCGQo.~,
SortUtil.swap(queue,j,k); N" E\o,_
k = j; +S/8{2%?DG
} A%Bz52yg
} =602%ef\
_I$]L8hC
} FfD2
&(-R
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} 3_33@MM
.S?,%4v%%
SortUtil: @kqy!5)K
@&EP&
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package org.rut.util.algorithm; OcSLRN?t
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import org.rut.util.algorithm.support.BubbleSort; dDm<'30?*v
import org.rut.util.algorithm.support.HeapSort; [Xz7.<0#U
import org.rut.util.algorithm.support.ImprovedMergeSort; .Dx]wv
import org.rut.util.algorithm.support.ImprovedQuickSort; M2oKLRt)L
import org.rut.util.algorithm.support.InsertSort; )%MBo.NL
import org.rut.util.algorithm.support.MergeSort; eGguq~s`
import org.rut.util.algorithm.support.QuickSort; {?m',sG;&
import org.rut.util.algorithm.support.SelectionSort; ~+T~}S
import org.rut.util.algorithm.support.ShellSort; aX~iY ~?_
*{-XN
/** DH9?~|
* @author treeroot a\%g_Q){
* @since 2006-2-2 Wg$MKc9Vy[
* @version 1.0 YEZ"BgUnbp
*/ 90ORx\Oeo
public class SortUtil { }RyYzm2
public final static int INSERT = 1; dvXu?F55
public final static int BUBBLE = 2; W0nRUAo[
public final static int SELECTION = 3; ,$*IJeKx
public final static int SHELL = 4; 54'z"S:W
public final static int QUICK = 5; t;4{l`dk
public final static int IMPROVED_QUICK = 6; YE^|G,]
public final static int MERGE = 7; J7l1-
public final static int IMPROVED_MERGE = 8; P"xP%zqo
public final static int HEAP = 9; k*n5+[U^tP
a]ftE\99
public static void sort(int[] data) { 8<g5.$xyz
sort(data, IMPROVED_QUICK); t=yM}#r$
} U|y+k`
private static String[] name={ >yL8C:J9
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "1l d4/
}; Q}m)Q('Rk
Z&21gN
private static Sort[] impl=new Sort[]{ "0]i4d1l
new InsertSort(), r?Z8_5Y
new BubbleSort(), D vK}UAj=
new SelectionSort(), C"YM"9JSJ
new ShellSort(), &PGU%"rN
new QuickSort(), l9SbuT$U
new ImprovedQuickSort(), q'1rSK
new MergeSort(), v4 c_UFEh<
new ImprovedMergeSort(), X#pE!mT
new HeapSort() hsVWD,w
}; Dpof~o,f
.ipYZg'V
public static String toString(int algorithm){ m+V'*[O{
return name[algorithm-1]; j[c|np4k\
} !qy/'v4
+=:CW'B5
public static void sort(int[] data, int algorithm) { Mb+cXdZb
impl[algorithm-1].sort(data); %pV/(/Q
} 'GNT'y_
6{1c
S
public static interface Sort { Pirc49c
public void sort(int[] data);
4INO .
} Q;`#ujxL
0h$23.
public static void swap(int[] data, int i, int j) { $7lI Dt
int temp = data; IEO5QV:u:
data = data[j]; \/'u(|G
data[j] = temp; ,qt9S0QS
} q *-q5FE
} LUJKR6oT{>