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。 qz 9tr
插入排序: U[R@x`
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package org.rut.util.algorithm.support; s2FngAM;f
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import org.rut.util.algorithm.SortUtil; =+Im*mgNn
/** Wqra8u#
* @author treeroot #Z\O}<
* @since 2006-2-2 Cp#)wxi6[y
* @version 1.0 A3HF,EG
*/ {XgnZ`*
public class InsertSort implements SortUtil.Sort{ 5o#Yt
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/* (non-Javadoc) 'CXRG$D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Hw4j:pS
*/ nBN&.+3t
public void sort(int[] data) { @wp4 |G
int temp; AVG>_$<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `2`fiKm
} JS2nXs1
} ahJ1n<
} B<7/,d'
2| B[tt1Z
} >E:<E'L
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冒泡排序: @m~RtC-Q
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package org.rut.util.algorithm.support; !"Q}R p
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import org.rut.util.algorithm.SortUtil; fj>C@p
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/** BByCMY
* @author treeroot B&Y_2)v
* @since 2006-2-2 2 -Xdoxw
* @version 1.0 #eK=
*/ ow6*Xr8eQ
public class BubbleSort implements SortUtil.Sort{ Q6
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ar.AL'
/* (non-Javadoc) |>2FRPK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #z!^<,
*/ aRJcSV
public void sort(int[] data) { Jq
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int temp; {_#y z\j
for(int i=0;i for(int j=data.length-1;j>i;j--){ hXn3,3f3oZ
if(data[j] SortUtil.swap(data,j,j-1); YE}s
} ifK%6o6
} ~]'pY
} !:CJPM6j3
} vyI%3+N@
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} 0)!Ll*L!p
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选择排序: K93p"nHN
]"~51HQZ
package org.rut.util.algorithm.support; ZH ,4oF
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import org.rut.util.algorithm.SortUtil; N^w'Hw0
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/** re &E{
* @author treeroot DJ@|QQ
* @since 2006-2-2 >T jJA#
* @version 1.0 AoaN22
*/ !@A#=(4R4
public class SelectionSort implements SortUtil.Sort { {/<6v. v
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/* RDM`9&V!jp
* (non-Javadoc) v4Ga0]VN$8
* RthT\%R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) awewYf$li
*/ PX(pX>
public void sort(int[] data) { 8|Y.|\
int temp; ^Q+i=y{W
for (int i = 0; i < data.length; i++) { i/So6jW
int lowIndex = i; &~e$:8+
for (int j = data.length - 1; j > i; j--) { 27F~(!n
if (data[j] < data[lowIndex]) { J;$N{"M
lowIndex = j; ,`A?!.K$
} "
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} *&Lq!rFS
SortUtil.swap(data,i,lowIndex); SP]IUdE\
} DI|:p!Nx
} !T,AdNa8
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} 6\jf|:h
sj?3M@l95W
Shell排序: Q,h7Sk*
C1EtoOv K
package org.rut.util.algorithm.support; 76cG90!Z
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import org.rut.util.algorithm.SortUtil; cLY c6
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/** 1xE]6he4{T
* @author treeroot ,m<H-gwa
* @since 2006-2-2 dq1:s1
* @version 1.0 #-% A[7Cdp
*/ >wHxmq8F5<
public class ShellSort implements SortUtil.Sort{ (b,[C\RBF
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e
/* (non-Javadoc) t*<#<a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I zbU)ud
*/ dsx]/49<
public void sort(int[] data) { BvrB:%_:
for(int i=data.length/2;i>2;i/=2){ fFvF\
for(int j=0;j insertSort(data,j,i); Zk8|K'oHx
} 6]zd.W
} C[!MS5
insertSort(data,0,1); wCf~O'XLw
} {O<l[|Ip
r7]zQIE
/** c#IYFTz
* @param data }N0Qm[R
* @param j PQKaqv}N
* @param i .`<@m]m-
*/ K$K^=>I"o
private void insertSort(int[] data, int start, int inc) { )Or.;
int temp; :'F}Dy
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); klgy;jSEr
} !+)AeDc:j
} cRd0S*QN2
} G$0c'9d*(
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} <GHYt#GIZ+
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快速排序: Z+j\a5d?,
4wd&55=2
package org.rut.util.algorithm.support; 2&c9q5.b
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import org.rut.util.algorithm.SortUtil; )*; zW!H
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/** Z[\O=1E,
* @author treeroot pD]0`L-HJU
* @since 2006-2-2 0;4t&v7
* @version 1.0 Y HSYu
*/ "8^5>EJWv
public class QuickSort implements SortUtil.Sort{ Y)N-V
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/* (non-Javadoc) 5zFR7/p{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dVB~Smsr
*/ "s!7dKXI"
public void sort(int[] data) { <<=WY_m}
quickSort(data,0,data.length-1); #P]#9Ty:
} D`J6h,=2l/
private void quickSort(int[] data,int i,int j){ g;$Xq)Dd
int pivotIndex=(i+j)/2; ;S0Kh"A
file://swap LK6; ?m
SortUtil.swap(data,pivotIndex,j); }ENR{vz$A
8Og_W8
int k=partition(data,i-1,j,data[j]); %AOja+
SortUtil.swap(data,k,j); W^3uEm&l!)
if((k-i)>1) quickSort(data,i,k-1); 322jR4QGr
if((j-k)>1) quickSort(data,k+1,j); E9?phD
r]3'74j:
} JpsPNa
/** <E\$3Ym9
* @param data H$G0`LP0/a
* @param i _k8A$s<d
* @param j ebPgYxVZR
* @return iyj+:t/
*/ VJ ^dY;
private int partition(int[] data, int l, int r,int pivot) { $zB[B;-!$
do{ h/B>S
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); D]c`B
SortUtil.swap(data,l,r); /Q~gU<
} yQ#:J9HMJ
while(l SortUtil.swap(data,l,r); ={LMdC~5X
return l; #Z6'?p9
} L?5Ck<!xG
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} meN2ZB?Y
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改进后的快速排序: z]b>VpW:
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package org.rut.util.algorithm.support; *tm0R> ?!
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import org.rut.util.algorithm.SortUtil; Ag F,aZU
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/** r$]HIvJD
* @author treeroot dnV[ P
* @since 2006-2-2 rQ7+q;[J
* @version 1.0 ?wnzTbJN
*/ 6mKjau{r_
public class ImprovedQuickSort implements SortUtil.Sort { )_/5*Ly@
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private static int MAX_STACK_SIZE=4096; [D*UT#FM
private static int THRESHOLD=10; K&8dA0i2u2
/* (non-Javadoc) k)TSR5A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q#nOJ(KV
*/ JyR/1 W
public void sort(int[] data) {
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int[] stack=new int[MAX_STACK_SIZE]; p~*UpU8u
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int top=-1; JH:0
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int pivot; !S&L*OH,
int pivotIndex,l,r; V+I|1{@i0
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stack[++top]=0; a'!zG cT
stack[++top]=data.length-1;
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while(top>0){ P-ri=E}>
int j=stack[top--]; TDd{.8qf
int i=stack[top--]; 6oF7:lt
s}N#n(
pivotIndex=(i+j)/2; 2Ry1b+\
pivot=data[pivotIndex]; &3yD_P_3
%/9
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SortUtil.swap(data,pivotIndex,j); kWdi595
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file://partition Ug&,Y/tFw2
l=i-1; 7O,U?p
r=j; 61xs%kxb..
do{ rk)##)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 271&i
SortUtil.swap(data,l,r); 2(/g}
} -WYAN:s
while(l SortUtil.swap(data,l,r); ,\qs4&
SortUtil.swap(data,l,j); ;]_o4e6\p
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if((l-i)>THRESHOLD){ 6ND`l5
stack[++top]=i; 2 !'A:;
stack[++top]=l-1; 4C FB"?n0
} Q'%PNrN
if((j-l)>THRESHOLD){ W3iZ|[E;
stack[++top]=l+1; {'U
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stack[++top]=j; :>+s0~
} ;\p KDPr
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} 1 5A*7|
file://new InsertSort().sort(data); _1U1(^)
insertSort(data); 8=]Tr3
} Uh][@35 p
/** n_'s=] ~
* @param data =C~/7N,lW]
*/ b!)<-|IK
private void insertSort(int[] data) {
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int temp; 9'r:~O
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gB<3-J1R
} 9Lr'YRl[W
} `3:.??7N
} y
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%Qj;, #z
}
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归并排序: F+@5C:<?
s>^dxF!+
package org.rut.util.algorithm.support; e[8LmuIZ
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import org.rut.util.algorithm.SortUtil; ;X?mmv'
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/** ` \+@Fwfx
* @author treeroot 7e<c$t#H
* @since 2006-2-2 p ZZc:\fJ
* @version 1.0 _r2J7&
*/ 7^g&)P
public class MergeSort implements SortUtil.Sort{ x:QgjK
2 aL)
/* (non-Javadoc) mQY_`&Jq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A,`8#-AX
*/ VqS#waNrx
public void sort(int[] data) { kcQ'$<Mz<
int[] temp=new int[data.length]; n/h,Lr)Z
mergeSort(data,temp,0,data.length-1); %?m$`9yU
} HQB(*
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private void mergeSort(int[] data,int[] temp,int l,int r){ &\Amn?Iq
int mid=(l+r)/2; ?.YOI.U^
if(l==r) return ; sq;s]@~
mergeSort(data,temp,l,mid); :hM/f
mergeSort(data,temp,mid+1,r); G>q(iF'
for(int i=l;i<=r;i++){ /RMPS.
d
{
temp=data; `(3/$%
} . Z%{'CC
int i1=l; 3K_A<j:
int i2=mid+1; PTEHP
for(int cur=l;cur<=r;cur++){ 7P9=)$(EH
if(i1==mid+1) 1Uqu>'
data[cur]=temp[i2++]; L@gWzC~?Q
else if(i2>r) LU9A#
data[cur]=temp[i1++]; 6qaulwV4t
else if(temp[i1] data[cur]=temp[i1++]; ndeebXw*
else W>O~-2
data[cur]=temp[i2++]; 39=1f6I1
} d$
^ ,bL2p
} gmm|A9+tv
>Bgw}PI
} kSDZZx
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改进后的归并排序: =J ym%m
q#8 [
package org.rut.util.algorithm.support; rs~wv('
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import org.rut.util.algorithm.SortUtil; Z"AQp _
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/** ?|39u{
* @author treeroot M{*Lp6h
* @since 2006-2-2 |gU(s
* @version 1.0 p1|f<SF')
*/ o9H^?Rut
public class ImprovedMergeSort implements SortUtil.Sort { nG;8:f`
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private static final int THRESHOLD = 10; AU$Uxwz4
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/* 'CN|'W)g7
* (non-Javadoc) *;fw%PW
* u5Ftu?t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EcCFbqS4W
*/ Et/&^&=\-
public void sort(int[] data) { !Uq^7Mw
int[] temp=new int[data.length]; @0SC"CqM
mergeSort(data,temp,0,data.length-1); TEaJG9RU>v
} uNHF'?X
?'<nx{!c
private void mergeSort(int[] data, int[] temp, int l, int r) { :at$HCaK
int i, j, k; Bn(W"=1
int mid = (l + r) / 2; H V;D?^F
if (l == r) `4~H/'%QB
return; l@ap]R
if ((mid - l) >= THRESHOLD) pb=cBZ$
mergeSort(data, temp, l, mid); ZAXN6h
else P`e!Z:
insertSort(data, l, mid - l + 1); -Q
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if ((r - mid) > THRESHOLD) 4- [J@
mergeSort(data, temp, mid + 1, r); |\g5+fv9
else !ki.t
insertSort(data, mid + 1, r - mid); %C=]1Q=T)
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for (i = l; i <= mid; i++) { }eRD|1
temp = data; (bh95X
} f`&dQ,;
for (j = 1; j <= r - mid; j++) { [ U wi
temp[r - j + 1] = data[j + mid]; R]i7 $}n
} x4/M}%h!;B
int a = temp[l]; 4X*>H
int b = temp[r]; U8G%YGMG.4
for (i = l, j = r, k = l; k <= r; k++) { txPIG/
if (a < b) { BouTcC
data[k] = temp[i++]; j7)Ao*WN
a = temp; b&5lY p"d
} else { UF@XK">
data[k] = temp[j--]; P'O#I}Dmw<
b = temp[j]; W[^qa5W<FB
} ^*fxR]Y
} lf!FTm7
} C(K; zo*S(
rQaxr!
/** W[}s o6
* @param data &CG*)bE
* @param l vVgg0Y2
* @param i R%c SJ8O#
*/ X B_B4X1R
private void insertSort(int[] data, int start, int len) { Jzp#bgq}|
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Nq@+'<@p$
} ~O1&@xX
} &|`C)6[C
} kGN+rHo
} "&%#!2
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堆排序: !0dNQ[$82
A+UU~?3y
package org.rut.util.algorithm.support; Vo"RO$%ow*
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import org.rut.util.algorithm.SortUtil; zrU{@z$l
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/** wW%4d
* @author treeroot *tAg*$
* @since 2006-2-2 gc?#pP
* @version 1.0 3dDX8M?
*/ kn/Ao}J74z
public class HeapSort implements SortUtil.Sort{ ~wVd$%7`
9,^_<O@Q
/* (non-Javadoc) Y!T
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }YHX-e<Yx]
*/ 25&J7\P*
public void sort(int[] data) { |eWjYGwJa
MaxHeap h=new MaxHeap(); mSo_} je(
h.init(data); SC-
$B
for(int i=0;i h.remove(); UDL
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System.arraycopy(h.queue,1,data,0,data.length); fhCc! \
} KW7UUXL
cDI [PJ9
private static class MaxHeap{ c?%(Dp E
LvEnX S
void init(int[] data){ ]]"jw{W}A
this.queue=new int[data.length+1]; Zx d~c]n
for(int i=0;i queue[++size]=data; Z?O*'#yn
fixUp(size); {b@KYR9K
} DSj(]U~r
} i>joT><B
z-c}NdW
private int size=0; N72Yq)(
L=8+_0
private int[] queue; }E7:ihy
Q3y;$ "
public int get() { 3S&U!
return queue[1]; ymNnkFv
} 2"-S<zM
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public void remove() { )nd\7|5#
SortUtil.swap(queue,1,size--); W'on$mB5<
fixDown(1); -D^}S"'
} 5IbJ
file://fixdown UQ.7>Ug+8s
private void fixDown(int k) { ZlojbL@|4
int j; EutP\K_Y
while ((j = k << 1) <= size) { \t|M-%&)4
if (j < size %26amp;%26amp; queue[j] j++; -!8(bjlJ&
if (queue[k]>queue[j]) file://不用交换 _A~4NW{U7
break; :(_+7N[KA
SortUtil.swap(queue,j,k); X@|&c]]
k = j; d
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|Xsb
} 1lpwZ"
} -&e92g&n
private void fixUp(int k) { [JaS??ig
while (k > 1) { wlPx,UqZ
int j = k >> 1; @p|$/Z%R,
if (queue[j]>queue[k]) F]I=+T
break; $.:mai
SortUtil.swap(queue,j,k); $ F S_E
k = j; )=DGdIEt
} Z,X'-7YkU
} -`Y:~q1
w%zRHf8C
} O MX-_\")
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} H- p;6C<
efY8M2
SortUtil: 1+7GUSIb
,2]X}&{i
package org.rut.util.algorithm; [>|FB '
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import org.rut.util.algorithm.support.BubbleSort; Bu]t*$
import org.rut.util.algorithm.support.HeapSort; LA[g(i 7
import org.rut.util.algorithm.support.ImprovedMergeSort; eVl'\aUd
import org.rut.util.algorithm.support.ImprovedQuickSort; J/6`oh?,Q
import org.rut.util.algorithm.support.InsertSort; |D.O6?v@
import org.rut.util.algorithm.support.MergeSort; ph2$oO
6,
import org.rut.util.algorithm.support.QuickSort; Oi} T2I
import org.rut.util.algorithm.support.SelectionSort; &Sp -w?kM
import org.rut.util.algorithm.support.ShellSort; ;;)`c/$
{>bW>RO)
/** ="d*E/##
* @author treeroot s[Ur~Wvn
* @since 2006-2-2 1J?dK|% b
* @version 1.0 "EV!>^Z
*/ dC<LDxlv
public class SortUtil { qSx(X!YS
public final static int INSERT = 1; dC1V-x10ju
public final static int BUBBLE = 2; Xq4|uuS-O
public final static int SELECTION = 3; T%Pp*1/m7
public final static int SHELL = 4; ]/cd;u
public final static int QUICK = 5; vOgC>_x7
public final static int IMPROVED_QUICK = 6; *x>3xQq&
public final static int MERGE = 7; j(#%tIv
public final static int IMPROVED_MERGE = 8; z* <y5
public final static int HEAP = 9; |p00j|k
X#w%>al
public static void sort(int[] data) { p#KW$OQ]8
sort(data, IMPROVED_QUICK); _P?\.W@
} x#C@8Bxq=
private static String[] name={ J`*iZvW#Bx
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Q# ?wXX47
}; M=]5WZO~A
X_$a,"'~)
private static Sort[] impl=new Sort[]{ jw
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new InsertSort(), S.|FL%;
new BubbleSort(), nNmsr=y5
new SelectionSort(), =IKEb#R/
new ShellSort(), oK9'
new QuickSort(), Yct5V,X^
new ImprovedQuickSort(),
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new MergeSort(), gf)t)- E
new ImprovedMergeSort(), rx :z#"?I
new HeapSort() P;]F=m+*V
}; [hRU&z;W
xdy^^3"
public static String toString(int algorithm){ smQVWs>
return name[algorithm-1]; _;RVe"tR#
} {I{:GcS
$ex!!rqN|
public static void sort(int[] data, int algorithm) { {0YAzZ7
impl[algorithm-1].sort(data); N{d@^Yj
} Brd,Eg
Cz^Q5F`
public static interface Sort { fYrGpW(`
public void sort(int[] data); (ozb%a#B
} o5aLUWi-
c3
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public static void swap(int[] data, int i, int j) { ;pRcVL_4
int temp = data; T{vR,
data = data[j]; iwY'4Z
e
data[j] = temp; B
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} cyd~2\Kv~
} !~-6wN"k