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。 GYy8kp84
插入排序: `tO t+>YWn
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package org.rut.util.algorithm.support; B]hRYU
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import org.rut.util.algorithm.SortUtil; <%^WZ:c
/** <% mD#S
* @author treeroot 6;~V@t
* @since 2006-2-2 o
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* @version 1.0 b!MN QGs
*/ <Ed; tq
public class InsertSort implements SortUtil.Sort{ 9pi{)PDJ
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/* (non-Javadoc) =MJRQV67
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k5%)
*/ s hq
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public void sort(int[] data) { ^^k9Acd~p
int temp; F@z%y'5 Z*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [ZG>FJDl8
} |0p@'X1
} RwK6u-u#9
} b&,ZmDJh
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} 5m@'( ]j
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冒泡排序: hX,RuI
+p _?ekV\
package org.rut.util.algorithm.support; :SwA) (1
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import org.rut.util.algorithm.SortUtil; v:!TqfI
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/** ":sp0(`h
* @author treeroot ~c+=$SL-=
* @since 2006-2-2 7r3CO<fb
* @version 1.0 *\+oe+ 3
*/ T6?03cSE
public class BubbleSort implements SortUtil.Sort{ #CJET
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/* (non-Javadoc) c#?~1@=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1H%p|'FKA
*/ %H_-`A`
public void sort(int[] data) { qfAnMBM1@
int temp; O,+9r_Gh
for(int i=0;i for(int j=data.length-1;j>i;j--){ c9@3=6S/
if(data[j] SortUtil.swap(data,j,j-1); }"RVUYU
} 4a!%eBhX"K
} 6]GHCyo
} st.{AEv@
} t0xE
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b
} a_\7Ho$^
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选择排序: ~Sf'bj;(
u46Z}~xf b
package org.rut.util.algorithm.support; -d2)
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import org.rut.util.algorithm.SortUtil; %WP[V{,F
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/** )_Hv9!U]e
* @author treeroot
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* @since 2006-2-2 HdY#cVxy
* @version 1.0 Y[VXx8"p
*/ gs.+|4dv
public class SelectionSort implements SortUtil.Sort { _h,X3P
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/* <%|u1cn~!v
* (non-Javadoc) Mc8_D,7
* 2cS94h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TZn5s~t
*/ 2t0VbAO1{
public void sort(int[] data) { HsRoiqo
int temp; mICx9oz]
for (int i = 0; i < data.length; i++) { x~IrqdmW
int lowIndex = i; .4w"3>
for (int j = data.length - 1; j > i; j--) { p_zVrlVb
if (data[j] < data[lowIndex]) { Jp8,s%
lowIndex = j; I@Yk &aU
} B"88 .U}$
} Z,-TMtM7
SortUtil.swap(data,i,lowIndex); :vS/Lzk
} SN7_^F
} /r&4< @
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} |Ul 4n@+2
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Shell排序: &liFUP?
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package org.rut.util.algorithm.support; vUL@i'0&o
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import org.rut.util.algorithm.SortUtil; ht+wi5b
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/** 23+JuXC6>
* @author treeroot ':
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* @since 2006-2-2 RZ9_*Lq7+
* @version 1.0 YXF^4||j.c
*/ 9Ns%<FRO@
public class ShellSort implements SortUtil.Sort{ ;_ 1Rk&o!
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/* (non-Javadoc) uTl"4;&j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *y+K{ fM1
*/ ignOF
public void sort(int[] data) { ^4[QX
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for(int i=data.length/2;i>2;i/=2){ $j!:ET'V
for(int j=0;j insertSort(data,j,i); 2]x,joB
} <h~uGBS"
} Q/HEWk
insertSort(data,0,1); !af;5F
} {)kL7>u]^V
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/** Ir-
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* @param data sP9{tk2K
* @param j . 7Pp'-hK
* @param i iP9Dr<P
*/ Y{t}sO%A
private void insertSort(int[] data, int start, int inc) { _? $')P|
int temp; z,!A4ws
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); t`Xx\
} hy~KY6Ta
} Sl
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} FELW?Q?k
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} SM<qb0
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快速排序: Kr4%D*
daf-B-
package org.rut.util.algorithm.support; ,z((?h,nm
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import org.rut.util.algorithm.SortUtil; q #8z%/~k
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/**
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* @author treeroot XNBzA3W
* @since 2006-2-2 #
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* @version 1.0 ?]}=4
*/ o
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public class QuickSort implements SortUtil.Sort{ 5["n] i
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/* (non-Javadoc) 0h('@Hb.K#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4i29nq^n
*/ ,M\/[_:
public void sort(int[] data) { LG?b]'#
quickSort(data,0,data.length-1); bvJ*REPL?
} +xr;X 9
private void quickSort(int[] data,int i,int j){ mm
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int pivotIndex=(i+j)/2; PhmtCp0-7-
file://swap a=[|"J<M
SortUtil.swap(data,pivotIndex,j); e.|t12)L "
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int k=partition(data,i-1,j,data[j]); 5YiBPB")
SortUtil.swap(data,k,j); |A H@W#7j
if((k-i)>1) quickSort(data,i,k-1); \J6e/ G
if((j-k)>1) quickSort(data,k+1,j); AUaupNN
$BOIa
} 25;`yB$
/** ?Xp+5{
* @param data ~ }G#ys\1
* @param i 6x@]b>W
* @param j c[?&;# feV
* @return 1fh6A`c
*/ u/`x@u
private int partition(int[] data, int l, int r,int pivot) { Ap}`Q(.
do{ 1n $
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9H%ixBnM
SortUtil.swap(data,l,r); =mxj2>,&
} <FvljKuq+
while(l SortUtil.swap(data,l,r); 0B5d $0
return l; ]mi)x63^
} ^;EwZwH[
M
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} gf,[GbZ
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改进后的快速排序: G;AV~1i:~
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package org.rut.util.algorithm.support; \=@4F^U7`
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import org.rut.util.algorithm.SortUtil; D._7)$d
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/** S|BS;VY
* @author treeroot ,\PTn7_
* @since 2006-2-2 1[".
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* @version 1.0 4 ..V
*/ 9kas]zQ%=P
public class ImprovedQuickSort implements SortUtil.Sort { u%CJjy
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private static int MAX_STACK_SIZE=4096; d 4;
private static int THRESHOLD=10; 3,@|kN<
/* (non-Javadoc) S^@#%>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [\"<=lb`
*/ gL wNHS
public void sort(int[] data) { .wuRT>4G)G
int[] stack=new int[MAX_STACK_SIZE]; 7"k\i=
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int top=-1; oeG?2!Zh
int pivot; p,2H8I){
int pivotIndex,l,r; 9/5EyV
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stack[++top]=0; -k3WY&9,
stack[++top]=data.length-1; ]8XIw`:f
zS}!87r)
while(top>0){ @<p9O0
int j=stack[top--]; 3T@`VFbE
int i=stack[top--]; <kWNx.eci
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pivotIndex=(i+j)/2; 1++ Fs
pivot=data[pivotIndex]; n,|YJ,v[
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SortUtil.swap(data,pivotIndex,j); z-h7v5i"
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file://partition bKPjxN?!9
l=i-1; #r80FVwiD
r=j; rj;~SC{
do{
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8"x\kSMb
SortUtil.swap(data,l,r); 9QN(Wq@
} C3 (PI,,
while(l SortUtil.swap(data,l,r); (7}Zh|@W
SortUtil.swap(data,l,j); L(kW]
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if((l-i)>THRESHOLD){ KU;m.{
stack[++top]=i; #0/^v*
stack[++top]=l-1; \'Ca%j
} R&1xZFj
if((j-l)>THRESHOLD){ 78u=J z6
stack[++top]=l+1; *(Us:*$W.
stack[++top]=j; U,^jN|v
} T`| >oX
is=|rY9$
} _K|?;j#x0k
file://new InsertSort().sort(data); >4AwjS}H
insertSort(data); coc:$Sr%
} P,SI0$Z
/** ~DK=&hCd!
* @param data 0,[-4m
*/ ${, !L l7)
private void insertSort(int[] data) { ;Q%3WD
int temp; I6F $@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R2nDK7j
} uWerC?da
} ;JR_z'<
} bn"z&g
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} IHf#P5y_
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归并排序: $*dY f
gd\b]L?>O
package org.rut.util.algorithm.support; m_>~e}2'A
T
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import org.rut.util.algorithm.SortUtil; O6r.q&U
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/** m?Dk(DJ
* @author treeroot Xw9"wAj
* @since 2006-2-2 @NJJ
* @version 1.0 !fG`xZ~
*/ V@1K
public class MergeSort implements SortUtil.Sort{ >oc&hT
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/* (non-Javadoc) %Z6\W;
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =?-
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*/ jTq@@y
public void sort(int[] data) { Q##L|*Qy
int[] temp=new int[data.length]; JB\BP$ap
mergeSort(data,temp,0,data.length-1); &5;y&dh
} ffE>%M*
gT4H?
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private void mergeSort(int[] data,int[] temp,int l,int r){ =)y=39&;/
int mid=(l+r)/2; lIL{*q(
if(l==r) return ; ,V:RE y
mergeSort(data,temp,l,mid); Kkz2N
mergeSort(data,temp,mid+1,r); $^"_Fox]A\
for(int i=l;i<=r;i++){ ||sj*K
temp=data; mnWbV\ VY
} <\S
j5
int i1=l; z[ N_3n
int i2=mid+1; $ *^E
for(int cur=l;cur<=r;cur++){ 'l3K*lck
if(i1==mid+1) {V9}W<
data[cur]=temp[i2++]; .TWX,#
else if(i2>r) mdD9Q
N01
data[cur]=temp[i1++]; ) "Toh=x]
else if(temp[i1] data[cur]=temp[i1++]; <E&"]
else k34!*(`q
data[cur]=temp[i2++]; qfzT8-Y
} ;Cqjg.wkB
} N?;5%pG
<
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} eFeWjB'<7
O1K~]Nt
改进后的归并排序: #>byP?)n
k@= LR
package org.rut.util.algorithm.support; &OSyU4r
aF\?X&|
import org.rut.util.algorithm.SortUtil; PNMf5'@m
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/** a0ze7F<(
* @author treeroot ]tVXao
* @since 2006-2-2 RDu'N
* @version 1.0 m}3POl/*j
*/ B>&eciY
public class ImprovedMergeSort implements SortUtil.Sort { .8%mi'0ud
|+MV%QG;
private static final int THRESHOLD = 10; Qvd$fY**
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/* 35[8XD
* (non-Javadoc) X K5qE"
* =
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /RmHG
H!
*/ _}B:SM
public void sort(int[] data) { #TX=%x6
int[] temp=new int[data.length]; |O]oX[~
mergeSort(data,temp,0,data.length-1); K9y!ZoB
} nC5
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private void mergeSort(int[] data, int[] temp, int l, int r) {
88ydAx#P
int i, j, k; ^L<*ggw
int mid = (l + r) / 2; S qQqG3F
if (l == r) z<F.0~)jb
return; AQ 5CrYb
if ((mid - l) >= THRESHOLD) lAwOp
mergeSort(data, temp, l, mid); e[@q{.
else zoV-@<Eh
insertSort(data, l, mid - l + 1); k+S 6)BQ7U
if ((r - mid) > THRESHOLD) Tx7YHE6{
mergeSort(data, temp, mid + 1, r); %8V/QimHU
else Pl
}dA
insertSort(data, mid + 1, r - mid); 7^~pOFdH
-vfV;+3
for (i = l; i <= mid; i++) { tU%-tlU9?
temp = data; ^m
} EO;f`s)t
for (j = 1; j <= r - mid; j++) { fxQN
temp[r - j + 1] = data[j + mid]; ?7cF_Zvve
} M9@#W"
int a = temp[l]; M#qZ0JT4
int b = temp[r]; *S.2p*Vd
for (i = l, j = r, k = l; k <= r; k++) { P~0d'Oi
if (a < b) { |j
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data[k] = temp[i++]; G'z&U?Ng
a = temp; 8P 3EQY-
} else { d*lnXzQor
data[k] = temp[j--]; <oSk!6*
b = temp[j]; 1b'1vp
} WQ]~TGW
} 9k^;]jE
} K`@GNT&
eb)S<%R/
/** QH%{r4
* @param data m//(1hWv7
* @param l VB 8t"5
* @param i +6!.)Ea=
*/ e3wFi,/@
private void insertSort(int[] data, int start, int len) { 5CkM0G`
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); J|Lk::Ri
} id.o)=
} L$`!~z1
} A]{8=
} 'sm+3d
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堆排序: (o\:rLZu
'7W?VipU
package org.rut.util.algorithm.support; fwI Zr~l
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import org.rut.util.algorithm.SortUtil; eN%Ks
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/** I/GZ
* @author treeroot %f@VOSs
* @since 2006-2-2 C/[2?[
* @version 1.0 OZ_'&CZ
*/ ~R) Km`t
public class HeapSort implements SortUtil.Sort{ S&V5zB""n
oS$&jd
/* (non-Javadoc) oj<.axA,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R$*{@U
*/ =? x A*_^
public void sort(int[] data) { B{|P}fN5}
MaxHeap h=new MaxHeap(); =?57*=]0M
h.init(data); >;QkV6i7
for(int i=0;i h.remove(); -)?~5Z
System.arraycopy(h.queue,1,data,0,data.length); u9>.x
zYG
} +6f5uMKUvs
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private static class MaxHeap{ r}QW!^F
;=6++Oq
void init(int[] data){ 8@/]ki`>
this.queue=new int[data.length+1]; v^[Ny0cM
for(int i=0;i queue[++size]=data; tGD$cBE
fixUp(size); ;'pEzz?k"
} ~?6V-m{>#
} tZ=BK:39\
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private int size=0; &^4W+I{H
/,= wP)
private int[] queue; sj`9O- ?49
(>>pla^
public int get() { .dp~%!"Sn,
return queue[1]; [ WZ<d^L
} G_[|N>
*Yvfp{B
public void remove() { $Kb-mFR
SortUtil.swap(queue,1,size--); 788q<7E
fixDown(1); GA6Z{U{XS
} tB[(o%k
file://fixdown d+ih]?
private void fixDown(int k) { !?ayZ5G([
int j; #joU}Rj|
while ((j = k << 1) <= size) { $K ,rVTU
if (j < size %26amp;%26amp; queue[j] j++; 2X)E3V/*
if (queue[k]>queue[j]) file://不用交换 Z[AJat@H
break; E] t:_v
SortUtil.swap(queue,j,k); J(M0t~RZ
k = j; ez86+
} T[<llh'+
} eJ%~6c`@!
private void fixUp(int k) { rem&F'x0V
while (k > 1) { *u7C){)gr[
int j = k >> 1; p0$K.f|
^
if (queue[j]>queue[k]) B{/Pv0y
break; z8>KY/c
SortUtil.swap(queue,j,k); uiE9#G
k = j; 5HL JkOV5
} Y#{KGVT<
} ',6QL4qV/
M5exo
} R.|fc5_"+
**-%5~
} \(Zdd
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SortUtil: GMgsM6.R
d)r=W@tF]
package org.rut.util.algorithm; =[t( [DG
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import org.rut.util.algorithm.support.BubbleSort; :'I mz
import org.rut.util.algorithm.support.HeapSort; lEZ[0oa
import org.rut.util.algorithm.support.ImprovedMergeSort; RURO0`^
import org.rut.util.algorithm.support.ImprovedQuickSort; P!B\:B%4~]
import org.rut.util.algorithm.support.InsertSort; zi[bpa17W
import org.rut.util.algorithm.support.MergeSort; ^67P(h
import org.rut.util.algorithm.support.QuickSort; $NG}YOP)@
import org.rut.util.algorithm.support.SelectionSort; `z5j
import org.rut.util.algorithm.support.ShellSort; BIbcm,YQ
uTP=kgYqJ
/** s4MP!n?gB
* @author treeroot +Z$X5Th
* @since 2006-2-2 SP
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* @version 1.0 ~LO MwMHl
*/ vCbqZdy?
public class SortUtil { 4p>@UB&U
public final static int INSERT = 1; 9Wx q
public final static int BUBBLE = 2; 5
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public final static int SELECTION = 3; gA2\c5F<
public final static int SHELL = 4; XV %L6x
public final static int QUICK = 5; *[W! ng
public final static int IMPROVED_QUICK = 6; 4=F~^Xc`
public final static int MERGE = 7; N;-+)=M,rf
public final static int IMPROVED_MERGE = 8; ;N ]ElwP
public final static int HEAP = 9; 'D\(p,(Mt
-Q 6W`*8
public static void sort(int[] data) { cy^6g?ew
sort(data, IMPROVED_QUICK); ;c:vzF~Q
} c4L5"_#`x-
private static String[] name={ kt X(\Hf!
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7F\U|kx_
}; s;8J= \9W
T"9`[Lzva
private static Sort[] impl=new Sort[]{ &ks>.l\
new InsertSort(), 09|d<
new BubbleSort(), dW8'$!@!!
new SelectionSort(), .__X[Mzth3
new ShellSort(), b*dRNu
new QuickSort(), ] =>vv;L
new ImprovedQuickSort(), ;?z b ( 2
new MergeSort(), >?U(w<
new ImprovedMergeSort(), O~fRcf:Q
new HeapSort() ,a^_
~(C
}; (M.Sl
RU_=VB %
public static String toString(int algorithm){ zMtK_ccQ
return name[algorithm-1]; jh\q2E~,`
} X?4tOsd
}Ax$}#
public static void sort(int[] data, int algorithm) { rm3~]
impl[algorithm-1].sort(data); i1 SP
} ?$-OdABXHK
4vBZb^W;9
public static interface Sort { Z9=Cw0( w?
public void sort(int[] data); Lk#u^|Eq7=
} Xb$)}n\9
~+3f8%
public static void swap(int[] data, int i, int j) { 6<]&T lS]
int temp = data; vhWj_\m
data = data[j]; I+`~6
data[j] = temp; Cd|V<BB9
} v{?9PRf\s
} z?j~ 2K<4