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。 ko-3`hX`
插入排序: }-Ds%L
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package org.rut.util.algorithm.support; ;2#9q9(
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import org.rut.util.algorithm.SortUtil; 7Shau%2C
/** Dx)>`yJk$;
* @author treeroot ye<b`bL2.
* @since 2006-2-2 GtuA94=!V&
* @version 1.0 `!Z0;qk
*/ Fb2,2Px
public class InsertSort implements SortUtil.Sort{ x3>ZO.Q
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/* (non-Javadoc) /Dd.C<F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W8blHw"
*/ bk(q8xR`
public void sort(int[] data) { L/J1;
int temp;
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }nEa9h
} MQc<AfW3/
} UC
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} &9+]{jXF
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冒泡排序: us5<18M5
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package org.rut.util.algorithm.support; h6CAd-\x\
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import org.rut.util.algorithm.SortUtil; GyC/39<P
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/** IZ/PZ"n_(
* @author treeroot Gye84C2E=
* @since 2006-2-2 CyfrnU8g
* @version 1.0 c>|1%}"?
*/ cp:U@Nh(
public class BubbleSort implements SortUtil.Sort{ "|Ke/0rGB
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/* (non-Javadoc) o5@d1A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z bW!c1s{
*/ 4Wd
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public void sort(int[] data) { ]/9@^D}&
int temp; x/pX?k
for(int i=0;i for(int j=data.length-1;j>i;j--){ B_uhNLd
if(data[j] SortUtil.swap(data,j,j-1); Aaw]=8 OI
} ~hZr1hT6L
} m
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} A_!N,<-
} H9\,;kM)
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} /Hs\`Kg"!
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选择排序: 8aqH;|fG}
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package org.rut.util.algorithm.support; _4f=\
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import org.rut.util.algorithm.SortUtil; bMA0#e2
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/** <e?1&5 6
* @author treeroot 4<j7F4
* @since 2006-2-2 *V`E)maU
* @version 1.0 ;b5^)S
*/ M=M~M$K
public class SelectionSort implements SortUtil.Sort { s||c#+j"8
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/* c
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* (non-Javadoc) j].=,M<dxE
* yMz dM&a!*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LE|DMz|J
*/ Q\nIU7:bZ
public void sort(int[] data) { */APe#
int temp; p)qM{`]G\
for (int i = 0; i < data.length; i++) { Lp7h'|]u
int lowIndex = i; 0iAQ;<*xi
for (int j = data.length - 1; j > i; j--) { w)Xn MyD(P
if (data[j] < data[lowIndex]) { d4m@u$^1B
lowIndex = j; #AR$'TE#
} hcqg94R#_
} cCx_tGR"
SortUtil.swap(data,i,lowIndex); o(gV;>I
} h3[x ZJO
} ~<Z7\yS)
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} kz"QS.${
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Shell排序:
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package org.rut.util.algorithm.support; NI:3hfs
<^w4+5sT/
import org.rut.util.algorithm.SortUtil; OJ1MV 7&
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/** V2SHF
* @author treeroot Q-?6o
* @since 2006-2-2 :'4",
* @version 1.0 >qU5 (M_&L
*/ Y<t(m$s
public class ShellSort implements SortUtil.Sort{ VBtdx`9
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/* (non-Javadoc) <c&Nm_)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O9*l6^Scw
*/ =`k',V_
public void sort(int[] data) { =p[a Cb
i
for(int i=data.length/2;i>2;i/=2){ ".{'h
for(int j=0;j insertSort(data,j,i); z.~jqxA9
} (j-_iOQ]i+
} '-BD.^!!
insertSort(data,0,1); Eq=j+ch7
} 2@!B;6*8q
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/** 3ESrd"W=
* @param data !A:d9 k
* @param j d
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* @param i }OqP`B
*/ xnDst9%
private void insertSort(int[] data, int start, int inc) { Q0%s|8Jc
int temp; HPXJRQBE
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uE}$ZBiq
} cR=o!2O
} tZY6{,K%4
} B"rO
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} +}
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快速排序: X4JSI%E
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package org.rut.util.algorithm.support; MnP+L'|
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import org.rut.util.algorithm.SortUtil; #fDM{f0]R
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/** i}O.,iH
* @author treeroot G8.nKoHv7x
* @since 2006-2-2 !tSh9L;<O
* @version 1.0 d+nxvh?I8
*/ tHEZuoi
public class QuickSort implements SortUtil.Sort{ I9<%fv
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/* (non-Javadoc) /@1pm/>ZaN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nE56A#,Q,
*/ AYAbq}'Yt
public void sort(int[] data) { "H]R\xp
quickSort(data,0,data.length-1); P9x':I$
}
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private void quickSort(int[] data,int i,int j){ 6 $K@s
int pivotIndex=(i+j)/2; 3:>hHQi
file://swap qJJ},4}
SortUtil.swap(data,pivotIndex,j); vwzElZ{C:v
>IipWTVo<
int k=partition(data,i-1,j,data[j]); lHFk~Qp[
SortUtil.swap(data,k,j); y@<&A~Cl^
if((k-i)>1) quickSort(data,i,k-1); RWFvf
if((j-k)>1) quickSort(data,k+1,j); |'j,|^<
*=P*b|P"$
} [@2$W?0i
/** J$d']%Dwb
* @param data @p@b6iLpO
* @param i $$XeCPs0
* @param j KV! (
* @return Q\}Ck+d`a
*/ W^pf 1I8[
private int partition(int[] data, int l, int r,int pivot) { n7|,b-
<
do{ VI-6t"l
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y[zjs^-vCv
SortUtil.swap(data,l,r); qCB{dp/
} #8$"84&N.
while(l SortUtil.swap(data,l,r); O=jzz&E+
return l; F##xVmR~
} 8~F?%!X
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} x.sC015Id
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改进后的快速排序: TuC
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package org.rut.util.algorithm.support; ijDXh y
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import org.rut.util.algorithm.SortUtil; #|T2`uYotf
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/** !Sl_qL
* @author treeroot }D-jTZlC
* @since 2006-2-2 '.jYu7
* @version 1.0 dK4w$~j{k
*/ lqmr`\@)
public class ImprovedQuickSort implements SortUtil.Sort { Ir=G\/A
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private static int MAX_STACK_SIZE=4096; `lrNH]B
private static int THRESHOLD=10; r]U8WM3r
/* (non-Javadoc) w&e3#p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wB:<ICm
*/ nX\mCO4T
public void sort(int[] data) { l&5Tft
int[] stack=new int[MAX_STACK_SIZE]; IG:2<G
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int top=-1; ;/H/Gn+
int pivot; rs,'vV-2\
int pivotIndex,l,r; hZw8*H^tP
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stack[++top]=0; N( f0,
stack[++top]=data.length-1; QP<.~^ao
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while(top>0){ yMC6 Gvp
int j=stack[top--]; s5V|.R
int i=stack[top--]; D/=k9[b!
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pivotIndex=(i+j)/2; 5#y_EpL"
pivot=data[pivotIndex]; Zy.3yQM9i
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SortUtil.swap(data,pivotIndex,j); u\"/EaQ{
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file://partition /}
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l=i-1; #$]8WSl
r=j; ou{V/?rb
do{ :,
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :^-\KE`3
SortUtil.swap(data,l,r); <\eRa{ef
} ~,Yd.?.TI
while(l SortUtil.swap(data,l,r); 7 fXJP5j
SortUtil.swap(data,l,j); /x4L,UJ= P
m/;fY>}3
if((l-i)>THRESHOLD){ *aq"c9
stack[++top]=i; y.s\MWvv>u
stack[++top]=l-1; c|Z6p{)V
} GB;_!69I
if((j-l)>THRESHOLD){ nB0KDt_
stack[++top]=l+1; Yh Ow0 x
stack[++top]=j; JcMl*k
} CNhLp#
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} FGhnK'
file://new InsertSort().sort(data); A~^x*#q{4
insertSort(data); bnPhhsR
} "{trK?-8%
/** Vol}wc
* @param data ,`YIcrya:
*/ yb)qg]2
private void insertSort(int[] data) { IM,4Si2
int temp; :G]t=vr1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5X9L h_p
} Pa?{}A
} +zXcTT[V
} IVa6?f6H_
t<j_` %`8
} L}'^FqO[IW
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归并排序: KXpbee
o,S(;6pDJ
package org.rut.util.algorithm.support; $My~sN8
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import org.rut.util.algorithm.SortUtil; PS=q):R|
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/** f0R+Mz8{
* @author treeroot V-E 77u6{0
* @since 2006-2-2 S<-5<Pg
* @version 1.0 9}L2$^#,NA
*/ jc\y{ I\
public class MergeSort implements SortUtil.Sort{ /5Vv5d/Z4!
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/* (non-Javadoc) C\OZs%]At
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Se37-
*/ id" l"
public void sort(int[] data) { ?YUL~P
int[] temp=new int[data.length]; &pR 8sySu
mergeSort(data,temp,0,data.length-1); TAqX
f_
} #?,"/Btq
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private void mergeSort(int[] data,int[] temp,int l,int r){ #sk~L21A
int mid=(l+r)/2; l;&kX6 w
if(l==r) return ; =''b `T$
mergeSort(data,temp,l,mid); {oR@'^N
mergeSort(data,temp,mid+1,r); `M(st%@n
for(int i=l;i<=r;i++){ cV_-Bcb
temp=data; wAJ=rRI
} Bk^o$3#
int i1=l; F S$8F
int i2=mid+1; mlUj%:Gm#
for(int cur=l;cur<=r;cur++){ iq^;c syKb
if(i1==mid+1) Koj9]2<0
data[cur]=temp[i2++]; B !wr} ]
else if(i2>r) z-:>[Sn
data[cur]=temp[i1++]; Hs_7oy|P
else if(temp[i1] data[cur]=temp[i1++]; uBn35%
else Rha|Rk~
data[cur]=temp[i2++]; t* p%!xsH
} /Ahh6=qQY
} #&fu"W+D96
ledr[)
} |`s:&<W+kp
N R4\TU
改进后的归并排序: 8j :=D!S
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package org.rut.util.algorithm.support; v(=0hY9
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import org.rut.util.algorithm.SortUtil; ,V^$Meh
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/** 6j+X@|2^
* @author treeroot ;*ULrX4[
* @since 2006-2-2 O:
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* @version 1.0
r* l
c#
*/ lV$#>2Hh5
public class ImprovedMergeSort implements SortUtil.Sort { qZ
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private static final int THRESHOLD = 10; }TAG7U*
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/* RCxwiZaf33
* (non-Javadoc) E H%hL5(
* JAI.NKB3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 25j\p{*
*/ m~fDDQs
public void sort(int[] data) { M%W#0
int[] temp=new int[data.length]; #};Zgixo$
mergeSort(data,temp,0,data.length-1); };EB[n
} 065 =I+Vo
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private void mergeSort(int[] data, int[] temp, int l, int r) { kHhku!CH
int i, j, k; |JP'j1 Ka
int mid = (l + r) / 2; e@ $|xa")
if (l == r) M)AvcZNs
return; h@\HPYi#.
if ((mid - l) >= THRESHOLD) ?r5a*
mergeSort(data, temp, l, mid); r.6?|
else ,?Zy4-
insertSort(data, l, mid - l + 1); 53pT{2]zAi
if ((r - mid) > THRESHOLD) s.n:;8RibP
mergeSort(data, temp, mid + 1, r); qDz[=6BF
else x;-D}#
insertSort(data, mid + 1, r - mid); }UQ,B
@LDs$"f9=
for (i = l; i <= mid; i++) { " vc4QH$
temp = data; SBf=d<j 1)
} mV)t
for (j = 1; j <= r - mid; j++) { hY!>>
temp[r - j + 1] = data[j + mid]; DUH_LnHw)
} Q9B!0G.-bs
int a = temp[l]; V0&7MY *
int b = temp[r]; 01uj-!D$@
for (i = l, j = r, k = l; k <= r; k++) { 'Ffvd{+:8
if (a < b) { ~l{Qz0&
data[k] = temp[i++]; W}}ZP];
a = temp; {fX~%%c"
} else { JG1q5j##]b
data[k] = temp[j--]; s0/m qZ]s
b = temp[j]; 7Kb&BF|Q
} C8)Paop$
} Aayd3Ph0%
} 1$6
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/** o@]n<ZYo
* @param data _x#y
* @param l bAuiMw7!
* @param i V[kn'QkWv
*/ L~by `q N_
private void insertSort(int[] data, int start, int len) { jG)66E*"
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Y9vVi]4
} *yo'Nqu
} -yg;,nCg
} Q)qJ6-R|HD
} U5@B7v1
pF8:?p['z
堆排序: * LWihal
T4gfQ6#
package org.rut.util.algorithm.support; (njTS+?
4;gw&sFF
import org.rut.util.algorithm.SortUtil; ggYi 7Wzsd
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/** =MD)F
* @author treeroot PxvxZJf$@
* @since 2006-2-2 e^\#DDm
* @version 1.0 `w8cV?
*/ b9 li
public class HeapSort implements SortUtil.Sort{ <w8H[y"c
ImH9 F\
/* (non-Javadoc) 0Q8iX)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g}K/ba'
*/ ,1lW`Krx
public void sort(int[] data) { '&K' 0qG
MaxHeap h=new MaxHeap();
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h.init(data); E?|NYu#I6
for(int i=0;i h.remove(); X%fLV(
System.arraycopy(h.queue,1,data,0,data.length); !8W0XUqh+
} CRrEs
18;#
IB 4L(n1
private static class MaxHeap{ 1p&=tN
=?wDQ:
void init(int[] data){ QR8]d1+GV
this.queue=new int[data.length+1]; nGc'xQy0
for(int i=0;i queue[++size]=data; PU B0H
fixUp(size); )J+rt^4|
} nU\.`.39
+
} T2)CiR-b
Uspv^O9_
private int size=0; {TMng&
|E||e10wR
private int[] queue; uGW#z_{(n
B>\q!dX3
public int get() { 0o BAJP
return queue[1]; F{.g05^y
} 6cbV[!BL
l=S!cj;
public void remove() { Gi$\th,
SortUtil.swap(queue,1,size--); KZ^>_K&
fixDown(1); wc"~8Ah
} qf<o"B|_9
file://fixdown '.S02=/
private void fixDown(int k) { {Dy,|}7s
int j; Az#kE.8b*A
while ((j = k << 1) <= size) { -;qK_x
if (j < size %26amp;%26amp; queue[j] j++; \:q @I]2
if (queue[k]>queue[j]) file://不用交换 Dvl\o;
break; Nt?=0X|M
SortUtil.swap(queue,j,k); r;H#cMj
k = j; `022gHYv
} _,UYbD\[J}
} +ek6}f#
private void fixUp(int k) { [)I
W9E
v
while (k > 1) { FB>P39u
int j = k >> 1; d.B<1"MQ
if (queue[j]>queue[k]) '}(Fj2P79
break; m6xbO
SortUtil.swap(queue,j,k); M\IdQY-c
k = j; oblw!)
} n:s _2h(u
} mc@Z+t'
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} een62-`
VAyAXN~
} ~YviXSW
j>v8i
bS(
SortUtil: {CVZ7tU7]
,lFzL3'_0x
package org.rut.util.algorithm; 'X/:TOk{W
mY XL
import org.rut.util.algorithm.support.BubbleSort; )
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import org.rut.util.algorithm.support.HeapSort; ]_|%!/_
import org.rut.util.algorithm.support.ImprovedMergeSort; "e>9R'y
import org.rut.util.algorithm.support.ImprovedQuickSort; YWV)C?5x&
import org.rut.util.algorithm.support.InsertSort; d0zp89BEn
import org.rut.util.algorithm.support.MergeSort; Bqk+ne
import org.rut.util.algorithm.support.QuickSort; <+b~E,
import org.rut.util.algorithm.support.SelectionSort; !A|}_K1Cr
import org.rut.util.algorithm.support.ShellSort; JPj/+f
%.\+j,G7
/** vQ$"|8,
* @author treeroot 1 un!
* @since 2006-2-2 =i7CF3
* @version 1.0 >!o!rs
*/ Nr]guC? rE
public class SortUtil { [=Nv=d<[p
public final static int INSERT = 1; 4ISIg\:c*
public final static int BUBBLE = 2; pXh`o20I
public final static int SELECTION = 3; I!K-*
AB
public final static int SHELL = 4; o4z|XhLr
public final static int QUICK = 5; 0XyPG
public final static int IMPROVED_QUICK = 6; [E2".F3
public final static int MERGE = 7; UalwK
public final static int IMPROVED_MERGE = 8; "EWq{l_I5$
public final static int HEAP = 9; PtL8Kd0`C
.uN(44^+x
public static void sort(int[] data) { uLI;_,/:
sort(data, IMPROVED_QUICK); JZ-64OT
} G[OJ<px
private static String[] name={ 'C:i5?zh(q
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Rx.5;2m
}; h_\W7xt
Lc-WfzT
private static Sort[] impl=new Sort[]{ &rG]]IO
new InsertSort(), UKB/>:R
new BubbleSort(), +9<:z\B|
new SelectionSort(), X"HVK+
new ShellSort(), />>KCmc
new QuickSort(), |B^Picu
new ImprovedQuickSort(), ke/4l?zs
new MergeSort(), eU]I !pI<
new ImprovedMergeSort(), F)/4#[
new HeapSort() N1vA>(2A
}; <5ULu(b&$
7v.O Lp
public static String toString(int algorithm){ evVxzU&
return name[algorithm-1]; 8S[bt@v
} a^O>i#i
#D>:'ezm
public static void sort(int[] data, int algorithm) { FZ8Qj8
impl[algorithm-1].sort(data); dWhqu68_
} #AO}JP
"Z dI~
public static interface Sort { TKEcbGhy
public void sort(int[] data); OsYZa`$,
} ps/|^8aGZ
>.XXB
5a
public static void swap(int[] data, int i, int j) { x{rjngp2
int temp = data; V%zo[A
data = data[j]; 0B~x8f
data[j] = temp; C}9|e?R[Rz
} {q;_Dd
} .I^Y[_.G