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。 `}~)1'(#/
插入排序: 'uf2
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package org.rut.util.algorithm.support; xR|eye R
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import org.rut.util.algorithm.SortUtil; 3P#+)
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/** :#w+?LA*
* @author treeroot M_!u@\
* @since 2006-2-2 ;eW'}&|LV
* @version 1.0 r*N~. tFo
*/ |5~wwL@LW7
public class InsertSort implements SortUtil.Sort{ f']sU/c=
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/* (non-Javadoc) Q5y
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PG6L]o^
*/ 7mn,{2
public void sort(int[] data) { !jAWNK6
int temp; jj3Pf>D+k
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Vo9>o@FlLM
} <DXmZ1
} D#d8 ^U
} tCbr<Ug
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} [T 4 pgt'H
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冒泡排序: Bzu(XQ
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package org.rut.util.algorithm.support; V9zywM
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import org.rut.util.algorithm.SortUtil; WbQhlsc:
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/** niYz9YX
* @author treeroot jy!f{dsC
* @since 2006-2-2 &gWMl`3^*!
* @version 1.0 @TA8^ND
*/ t}]9VD9
public class BubbleSort implements SortUtil.Sort{ c>S"`r
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/* (non-Javadoc) ,Um 5S6 Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rT f lk
*/ (F,(]71Z+
public void sort(int[] data) { (|<h^]
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int temp; Bw3F7W~l
for(int i=0;i for(int j=data.length-1;j>i;j--){ 56Sh
if(data[j] SortUtil.swap(data,j,j-1); h-r6PY=i
} B:O+*3j
} '!wPnYT@D
} |"CJ
} AZxrJ2G
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} PyC;f8n'(
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选择排序: TRgY :R_
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package org.rut.util.algorithm.support; F2bm+0vOJ
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import org.rut.util.algorithm.SortUtil; $R%+*
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/** 9 m\)\/V
* @author treeroot S9G8aea/
* @since 2006-2-2 0
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* @version 1.0 m x3}m?WQ
*/ H\)gE>
public class SelectionSort implements SortUtil.Sort { _kn]#^ucCe
/rIm7FW)
/* yy1>r }L
* (non-Javadoc) =<[7J]%
* t/JOERw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ATMc`z:5T
*/ jOBY&W0r
public void sort(int[] data) { v]WH8GI
int temp; 9U2Px$E
for (int i = 0; i < data.length; i++) {
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int lowIndex = i; @+?+6sS
for (int j = data.length - 1; j > i; j--) { AA))KBXq
if (data[j] < data[lowIndex]) { *he7BUO
lowIndex = j; e>
ar
} ,'FD}yw4v
} $Q8P@L)[
SortUtil.swap(data,i,lowIndex); Hs[}l_gYn
} M0O>Ljo4RN
} R(: 4s
H9%l?r5
} *I:mw8t
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Shell排序: J#6LSD@(O
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package org.rut.util.algorithm.support; QjQ4Z'.r >
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import org.rut.util.algorithm.SortUtil; LIr(mB"Y0
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/** nHSTeFI?
* @author treeroot qPsyqn?Y|
* @since 2006-2-2 d4d\0[
* @version 1.0 xe(MHNrj
*/ oz%h)#;
public class ShellSort implements SortUtil.Sort{ ;e&!
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/* (non-Javadoc) {V[Ha~b%*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;US83%*
*/ 5\VxXiy0
public void sort(int[] data) { %z1{Kus
for(int i=data.length/2;i>2;i/=2){ 65lOX$*{-
for(int j=0;j insertSort(data,j,i); pz$_W
} c`-YIz)W
} pAENXC\,
insertSort(data,0,1); Nt HbwU,
} kfVZ=`p}
9U]pH%.9
/** NeY"6!;k
* @param data }g}6qCv7
* @param j 3nwz<P
* @param i >/b^fAG
*/ <E"*)Oi
private void insertSort(int[] data, int start, int inc) { -dg} BM
int temp; u-lrTa""z
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *7\W=-
} KZECo1
} ,SAbC*nq
} GXO4x|08F
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} >5c]aNcv
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快速排序: HH7[tGF
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package org.rut.util.algorithm.support; _=uviMuE
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import org.rut.util.algorithm.SortUtil; MM7"a?y)
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/** R3$@N
* @author treeroot .Nc_n5D6
* @since 2006-2-2 Pow|:Lau!
* @version 1.0 rWJ*e Y
*/ \kxh#{$z?
public class QuickSort implements SortUtil.Sort{ n9DbiL1{
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/* (non-Javadoc) g+.0c=G(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {h,_"g\V
*/ [1<(VyJ}ye
public void sort(int[] data) { INOH{`}Ew
quickSort(data,0,data.length-1); N9pwWg&<+
} &1=g A.ZR
private void quickSort(int[] data,int i,int j){ N. jA 8X
int pivotIndex=(i+j)/2; rrAqI$6
file://swap O"qR }W
SortUtil.swap(data,pivotIndex,j); 97!H`|u <
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int k=partition(data,i-1,j,data[j]); $1~c_<DN
SortUtil.swap(data,k,j); uw_H:-J
if((k-i)>1) quickSort(data,i,k-1); =w6}\ 'X
if((j-k)>1) quickSort(data,k+1,j); Oohq9f#!
)qmFK
.;%
} vuZf#\zh}
/** Ym'7vW#~
* @param data mzu<C)9d,
* @param i z<t>hzl7
* @param j <E SvvTf
* @return w m19T7*L
*/ mdaYYD=c%
private int partition(int[] data, int l, int r,int pivot) { wsqLXZI
do{ <iRWd
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c88_}%h?(
SortUtil.swap(data,l,r); 8|6~o.B.G
} V7BsE w
while(l SortUtil.swap(data,l,r); B7|c`7x(
return l; S4)A6z$
} kAeNQRjR
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} [NL -!
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改进后的快速排序: ]9s\_A9
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package org.rut.util.algorithm.support; O)`Gzx*ShU
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import org.rut.util.algorithm.SortUtil; LaclC]yLU
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/** lr0M<5d=p
* @author treeroot zXjwnep
* @since 2006-2-2 '^DUq?E4
* @version 1.0 >4~#%&
*/ BR3wX4i\
public class ImprovedQuickSort implements SortUtil.Sort { -n-Z/5~ X
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private static int MAX_STACK_SIZE=4096; PGkCOmq
private static int THRESHOLD=10; 5~Q Tg
/* (non-Javadoc) 1 )'Iu`k/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ <W2ZoqaV
public void sort(int[] data) { Gp8psH
int[] stack=new int[MAX_STACK_SIZE]; fQO
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int top=-1; c`ftd>]
int pivot; Sj@15 W
int pivotIndex,l,r; **n y!
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stack[++top]=0; o<nS_x
stack[++top]=data.length-1; &1l~&,,
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while(top>0){ AJdp6@O+
int j=stack[top--]; a(f(R&-:$Y
int i=stack[top--]; +X[8wUm|^
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:
pivotIndex=(i+j)/2; NZP7r;u
pivot=data[pivotIndex]; d+e0;!s~O
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SortUtil.swap(data,pivotIndex,j); /e(W8aszi
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file://partition 50*@.!^*
l=i-1; Zt_r9xs>
r=j; &}E:jt}
do{ yuv4*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "|hlDe<
SortUtil.swap(data,l,r); bJPJ.+G7
} 6#vI;d[^
while(l SortUtil.swap(data,l,r);
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SortUtil.swap(data,l,j); Cg^:jd
;t!9]1
if((l-i)>THRESHOLD){ ^obC4(
stack[++top]=i; ; [FLT:$
stack[++top]=l-1; op.d;lO@
} ly=a>}F_
if((j-l)>THRESHOLD){ w,/6B&|
stack[++top]=l+1; mqw 84u
stack[++top]=j; \C7q4p?8
} zIm-X,~I$
h1*FPsc
} 5VZjDg?
file://new InsertSort().sort(data); =|"=l1
insertSort(data); w&5/Zh[~~L
} (gU2"{:]J
/** ]w-.|vx
* @param data MnS+ nH!d
*/ =+\$e1Mb*
private void insertSort(int[] data) { O+b6lg)q
int temp; r>O|L%xpv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \OY}GRKt
} :X Lp
} tpGCrn2w>
} %I0}4$
v^TkDf(Oz
} e[8UH =`|
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归并排序: V)h
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package org.rut.util.algorithm.support; "koo` J
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import org.rut.util.algorithm.SortUtil; -;/
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/** hkF^?AJ
* @author treeroot D J_DonO]
* @since 2006-2-2 M $uf:+F
* @version 1.0 A%n?}
*/ I)lC{v
public class MergeSort implements SortUtil.Sort{ s??czM2O
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/* (non-Javadoc) [T]Bf o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5*+I
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*/ ="2/\*.SL
public void sort(int[] data) { G
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int[] temp=new int[data.length]; Ld~ q1*7J
mergeSort(data,temp,0,data.length-1); ?BsH{QRYQ
} Wc\+x1 :8
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private void mergeSort(int[] data,int[] temp,int l,int r){ Eu4 &-i
int mid=(l+r)/2; zi.mq&,]R
if(l==r) return ; ^RDU
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mergeSort(data,temp,l,mid); _D
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mergeSort(data,temp,mid+1,r); E-F5y
for(int i=l;i<=r;i++){ WUY,. 8
temp=data; Qt~B#R.
V
} ckWkZ
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int i1=l; I^:F)a:
int i2=mid+1; bRsc-Fz6
for(int cur=l;cur<=r;cur++){ ;W~4L+e
if(i1==mid+1) }^9paU
data[cur]=temp[i2++]; 6klD22b2$
else if(i2>r) HzEGq,.
data[cur]=temp[i1++]; y]^#$dK(z
else if(temp[i1] data[cur]=temp[i1++]; F|*tNJU>
else p&O8qAaO
data[cur]=temp[i2++]; A Iv<f9*.:
} ~j]dct7
} rKT)!o'
> Y]_K
} \HD-vINV;
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改进后的归并排序: gmDR{loX
+4HlRGH
package org.rut.util.algorithm.support; 5us^B8Q
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import org.rut.util.algorithm.SortUtil; O{u[+g
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/** +`Fb_m)f
* @author treeroot P9s_2KOF
* @since 2006-2-2 'e85s%ru
* @version 1.0 8$m1eQ`{
*/ BjvdnbJg
public class ImprovedMergeSort implements SortUtil.Sort { rei5{PC
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private static final int THRESHOLD = 10; Ih3$
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/* dE GX3 -
* (non-Javadoc) Vmtzig3w[
* 506V0]`/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZMJ3NN]F
*/ ydup)[n
public void sort(int[] data) { J?,?fqb
int[] temp=new int[data.length]; 2+Zti8
mergeSort(data,temp,0,data.length-1); ]LVnt-q
} Z)5klg$c
L20rv:W$h
private void mergeSort(int[] data, int[] temp, int l, int r) { -$9~xX
int i, j, k; yfC2^#9 Zu
int mid = (l + r) / 2; rmQ\RP W
if (l == r) F+3!uWUK
return; nzWQQra|?
if ((mid - l) >= THRESHOLD) NnP.k7m)
mergeSort(data, temp, l, mid); \imp7}N
else phmVkV2a;#
insertSort(data, l, mid - l + 1); )vQNiik#
if ((r - mid) > THRESHOLD) aP_3C_
mergeSort(data, temp, mid + 1, r); -[Y:?lA
else v4C3uNW
insertSort(data, mid + 1, r - mid); ee^4KKsh\
jr:drzr{I
for (i = l; i <= mid; i++) { |eF.ZC)QWh
temp = data; F:_FjxU
} PU"S;4m
for (j = 1; j <= r - mid; j++) { K.%z;(U
temp[r - j + 1] = data[j + mid]; 0Gx*'B=
} (rIXbekgB
int a = temp[l]; ,#
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int b = temp[r]; Lrlk*
for (i = l, j = r, k = l; k <= r; k++) { s.KOBNCFa
if (a < b) { /k)
NP
data[k] = temp[i++]; d=F)y~&'
a = temp; L\YZT|
K(
} else { %UBPoq
data[k] = temp[j--]; O"8 P#Ed
b = temp[j]; ;AltNGcM
} ~ur)fAuF2
} O/$ v69:
} 9\:w8M X'
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/** GBW 7Y
* @param data ^(J-dK
* @param l qhnapZJ
* @param i .01TTK *
*/ y+= \z*9
private void insertSort(int[] data, int start, int len) {
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )Yrr%f`\
} ..aK sSm(
} tpE3|5dZF
} =uS8>.Qj
} TtZrttCE6
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堆排序: ^>eFm8`N
Nl=+.d6Qo
package org.rut.util.algorithm.support; +yvBSpY
yG4 MUf6
import org.rut.util.algorithm.SortUtil; F;
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/** X!m;uJZp
* @author treeroot oR7 7`
* @since 2006-2-2 u$\Tg3du2
* @version 1.0 ~O8]3+U
*/ >H8^0n)?
public class HeapSort implements SortUtil.Sort{ |]I#CdO
,d5ia4\K
/* (non-Javadoc)
nMeS CX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I ;l`VtD
*/ fq{I$syY
public void sort(int[] data) { 2AmR(vVa"
MaxHeap h=new MaxHeap(); (Y&R0jt
h.init(data); =w t-YM
for(int i=0;i h.remove(); 8`6
LMQ
System.arraycopy(h.queue,1,data,0,data.length); xR _DY'z
} RR8U
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private static class MaxHeap{ *SWv*sD
H_v/}DEG
void init(int[] data){ gr[D!D>
this.queue=new int[data.length+1]; i;gw=Be
for(int i=0;i queue[++size]=data; -g~iE]x6Y
fixUp(size); YK7gd|LR]
} ?! !;XW
} x>'?IJZ
/\Jc:v#Q
private int size=0; #xDDh`
+38Lojb}
private int[] queue; Sv~PXi^`H
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public int get() { hl=oiUf[s
return queue[1]; DM+sjn
} Tm0?[[3hC
[sjrb?Xd
public void remove() { oVAOGHE
SortUtil.swap(queue,1,size--); A7mMgb_
fixDown(1); !Mm+bWn=mB
} 4c~*hMry
file://fixdown 1V#B]x:
private void fixDown(int k) { rAtai}Lx
int j; w}fqs/)w
while ((j = k << 1) <= size) { "~B~{ _<j
if (j < size %26amp;%26amp; queue[j] j++; ^Jc$BMaVg
if (queue[k]>queue[j]) file://不用交换 &?&'"c{;m
break; HrM)jC<~
SortUtil.swap(queue,j,k); AN50P!FZW
k = j;
zgZi
} PpI+@:p[
} YN$ndqOP
private void fixUp(int k) { Ov F8&*A
while (k > 1) { EG8%~k+R
int j = k >> 1; Fa Qu$q
if (queue[j]>queue[k]) ytuWT,u
break; iG?w;
SortUtil.swap(queue,j,k); "'Q$.sR
k = j; })h'""i&xn
} `<.
7?
} `\4 RFr$
btJ,dpir
} |s)VjS4@
R;5QD`
} wR`w@5,d
/r #b
SortUtil: U0lqGEZ
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package org.rut.util.algorithm; My`josJ`Pb
$fq-wl-=
import org.rut.util.algorithm.support.BubbleSort; n3-GnVC][
import org.rut.util.algorithm.support.HeapSort; 4+Li)A:4.
import org.rut.util.algorithm.support.ImprovedMergeSort; p7?CeyZ-V
import org.rut.util.algorithm.support.ImprovedQuickSort; T +|J19
import org.rut.util.algorithm.support.InsertSort; >"2\D|-/
import org.rut.util.algorithm.support.MergeSort; S}XB
|
import org.rut.util.algorithm.support.QuickSort; Off: ~
import org.rut.util.algorithm.support.SelectionSort; E1mI Xd;.
import org.rut.util.algorithm.support.ShellSort; BZnp
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VuYWb)@
/** ^H@!)+
=
* @author treeroot 8=!rnJCav
* @since 2006-2-2 81%qM7v9H
* @version 1.0 WHdqO8
*/ +?J_6Mo@X
public class SortUtil { , 4h!"c
public final static int INSERT = 1; 8VBkI Ygb
public final static int BUBBLE = 2; v)v{QNQp^
public final static int SELECTION = 3; }kgjLaQ^N
public final static int SHELL = 4; %BT)oH}
public final static int QUICK = 5; QBN=l\m+
public final static int IMPROVED_QUICK = 6; $A5B{2
public final static int MERGE = 7; soFvrl^Ql+
public final static int IMPROVED_MERGE = 8; @eAGN|C5
public final static int HEAP = 9; Q}k_#w
~ ]m@k'n
public static void sort(int[] data) { dd
@COP?
sort(data, IMPROVED_QUICK); +w_MSj#P
} J"a2
@S&
private static String[] name={ 8H$@Xts
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" kOlI?wc
}; P5ESrZ@f
VygXhh^7\
private static Sort[] impl=new Sort[]{ [|m>vY!
new InsertSort(), &})4?5
new BubbleSort(), .yHHogbt
new SelectionSort(), ID{Pzmt-
new ShellSort(), l72ie
new QuickSort(), hCOy\[2$
new ImprovedQuickSort(), ]ZU:%Qhu
new MergeSort(), qAuUe=w%p
new ImprovedMergeSort(), s\3Z?zm8
new HeapSort() 7kWZMi
}; 2=Vkjh-
o#KPrW`XJ/
public static String toString(int algorithm){ 8m13M5r
return name[algorithm-1]; l yLK$B?/
} s K$Sar
}X W#?l
public static void sort(int[] data, int algorithm) { @zVBn~=i
impl[algorithm-1].sort(data); +2_6C;_DX
} k*UR#z(I
:BrnRW64
public static interface Sort { ^QHMN 7r/
public void sort(int[] data); )oz-<zW
} W0r5D9k
n<"a+TTU
public static void swap(int[] data, int i, int j) { !A ydhe
int temp = data; 'piF_5(@
data = data[j]; B2Awdw3=g
data[j] = temp; S|u1QGB
} KzFs#rhpn
} zxynEdO