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。 kr5">"7
插入排序: Y3cMC)
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package org.rut.util.algorithm.support; B6nX$T4zP
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import org.rut.util.algorithm.SortUtil; TnOggpQ6X
/** qIE9$7*X
* @author treeroot [nG<[<0G;
* @since 2006-2-2 <8i//HOE
* @version 1.0 '8.r-`l(
*/ Mj?`j_X
public class InsertSort implements SortUtil.Sort{ q&-`,8#
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/* (non-Javadoc) IH&|Tcf\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |t&>5HM
*/ F>6|3bOR
public void sort(int[] data) { #n#}s
int temp; n;C
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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); Apag{Z]^B
} LTCb@L{^i
} "]x'PI 4J
} S9D<8j^
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} -1_)LO&H
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冒泡排序: 8oseYH
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package org.rut.util.algorithm.support; l
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import org.rut.util.algorithm.SortUtil; 7\[@m3s
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/** t%FwXaO#
* @author treeroot g\:[
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* @since 2006-2-2 O`\;e>!t
* @version 1.0 EhvX)s
*/ KYhw OGN
public class BubbleSort implements SortUtil.Sort{ CL;}IBd a
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/* (non-Javadoc) _pG-qK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ({)+3]x
*/ 9uO 2Mm
public void sort(int[] data) { IGQFtO/x
int temp; RnE4<Cy
for(int i=0;i for(int j=data.length-1;j>i;j--){ v^NIx q}U
if(data[j] SortUtil.swap(data,j,j-1); gp?uHKsM
} 6ex/TySM
} : /N0!&7
} 9};8?mucr
} yu|8_<bq
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} +Q)XH>jh
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选择排序: k FD;i
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package org.rut.util.algorithm.support; <w9JRpFY
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import org.rut.util.algorithm.SortUtil; &64h ;P<
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/** NB#OCH1/9
* @author treeroot iByf{ I>+
* @since 2006-2-2 %E>Aw>]v
* @version 1.0 wo/\]5
*/ KC6.Fr{
public class SelectionSort implements SortUtil.Sort { }?i0
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/* M h}m;NI
* (non-Javadoc) gO- _
* pa3{8x{9m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QO~P7r|A
*/ uyWunpT
public void sort(int[] data) { 2- h{N
int temp; qgHWUwr+n
for (int i = 0; i < data.length; i++) { AKfDXy
int lowIndex = i; >\#*P'y`d
for (int j = data.length - 1; j > i; j--) { Eyqa?$R
if (data[j] < data[lowIndex]) { C2I_%nU Z1
lowIndex = j; b\!_cb~ "@
} $( kF#
} ]:- mbgW
SortUtil.swap(data,i,lowIndex); M"Hf :9Rk
} ZJJY8k `
} hWLA<wdb
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} !i}w~U<
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Shell排序: 5Ln,{vsv
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package org.rut.util.algorithm.support; [l??A3G
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import org.rut.util.algorithm.SortUtil; &PHTpkaam
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/** /C:gKy4
* @author treeroot lfgq=8d
* @since 2006-2-2 /Cr%{'Pzk
* @version 1.0 xLajso1g69
*/ o:'MpKm
public class ShellSort implements SortUtil.Sort{ )dw'BNz5hT
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/* (non-Javadoc) v!-pSa)3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qYQl,w
*/ f'RX6$}\1X
public void sort(int[] data) { R) h#Vc(
for(int i=data.length/2;i>2;i/=2){ 'JE`(xD
for(int j=0;j insertSort(data,j,i); V=l0(03j~
} V1zmG y
} Gb6 'n$g
insertSort(data,0,1); _N cR)2
} u&vf+6=9Dd
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/** 2l'6.
* @param data
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* @param j <'Eme
* @param i K5h
*/ t=iIY`Md%
private void insertSort(int[] data, int start, int inc) { H%tdhu\e
int temp; (%6P0*
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); g$-PR37(
} 9.-S(ZO
} rs[T=C Q
} ;[DU%f
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} $h"\N$iSq
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快速排序: 8TKnL\aar
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package org.rut.util.algorithm.support; cuITY^6
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import org.rut.util.algorithm.SortUtil; /,yd+wcW#
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/** kDioD
* @author treeroot bAqA1y3=
* @since 2006-2-2 .L~AL|2_
* @version 1.0 (w3YvG.
*/ 2/^3WY1U
public class QuickSort implements SortUtil.Sort{ ES7s1O$#
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/* (non-Javadoc) M6jy\<a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~36!?&eA8
*/ g3y~bf
public void sort(int[] data) { @":
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quickSort(data,0,data.length-1); tyFzSrfc
} 8GUX{K
private void quickSort(int[] data,int i,int j){ C1)!f j=
int pivotIndex=(i+j)/2; k y7Gwc
file://swap kTgEd]^&D
SortUtil.swap(data,pivotIndex,j); gwMNYMI
_G@GpkSe>
int k=partition(data,i-1,j,data[j]); ZY+qA
SortUtil.swap(data,k,j); ;A*]l'[-
if((k-i)>1) quickSort(data,i,k-1); oMa6(3T?E
if((j-k)>1) quickSort(data,k+1,j); I\ob7X'Xu!
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} NXrlk
/** W${Ue#w77
* @param data ^09,"<@k
* @param i &h/Xku&0
* @param j :"c*s4
* @return TvbE2Q;/UL
*/ DvvK^+-~
private int partition(int[] data, int l, int r,int pivot) { Z FL~;_r
do{ )y$(AJx$
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #"~<HG}bR/
SortUtil.swap(data,l,r); y<Ot)fa$
} F]&*ow
while(l SortUtil.swap(data,l,r); +mn[5Y} :
return l; q/,O\,
} Q;rX;p^W
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} e9B064
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改进后的快速排序: )SGq[B6@I
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package org.rut.util.algorithm.support; |CyE5i0
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import org.rut.util.algorithm.SortUtil; JucY[`|JV
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/** 9Mcae31
* @author treeroot _yR^*}xJb
* @since 2006-2-2 K3uRs{l|
* @version 1.0 u*9V&>o
*/ a 1*p*dM#
public class ImprovedQuickSort implements SortUtil.Sort { 1o>xEWt:0K
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private static int MAX_STACK_SIZE=4096; 8 Fbo3
private static int THRESHOLD=10; \fe]c :
/* (non-Javadoc) a8Wwq?@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aw> #P
*/ _o~nr]zx
public void sort(int[] data) { 8q7b_Pq1U
int[] stack=new int[MAX_STACK_SIZE]; <gBA1oRz
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int top=-1; L}NSR
int pivot; }<:}XlwT%
int pivotIndex,l,r; /qw.p#
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stack[++top]=0; 1h5 Akq
stack[++top]=data.length-1; vZ Lf
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while(top>0){ e96k{C`j0
int j=stack[top--]; _SkLYL!=9
int i=stack[top--]; akQ7K
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pivotIndex=(i+j)/2; [Vt\$
pivot=data[pivotIndex]; 8dhUBJ0_
=vhm}
SortUtil.swap(data,pivotIndex,j); <a+Z;>
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file://partition Z?z.?ar
l=i-1; ?
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r=j; E_LN]v
do{ I2Yz#V<%ru
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z/J y'$x
SortUtil.swap(data,l,r); #$y?v%^
} T[A69O]v
while(l SortUtil.swap(data,l,r); :~^(g$Z
SortUtil.swap(data,l,j); L/^I*p,
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if((l-i)>THRESHOLD){ >o,TZc\
stack[++top]=i; "zy7C*)>r
stack[++top]=l-1; I<tm"?q0
} Y
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if((j-l)>THRESHOLD){ J$v?T$LVw
stack[++top]=l+1; 1-QS~)+
stack[++top]=j; .%QXzIa3F
} CJI~_3+K
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} ,7b[!#?8
file://new InsertSort().sort(data); Q NVa?'0"Y
insertSort(data); F4{IEZ
} >&k-'`Nw
/** S21,VpW\
* @param data 0SPk|kr
*/ dcT80sOC
private void insertSort(int[] data) { */DO ex"y
int temp; {1
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0qT%!ku&
} ?G&ikxl
} c[Zje7 @
} Z EO WO
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} sn>~O4"
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归并排序: =mmWl9'mJ
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package org.rut.util.algorithm.support; HUO j0T
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import org.rut.util.algorithm.SortUtil; PnG-h~Y3N
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/** Zj4Uak
* @author treeroot {kAc(
* @since 2006-2-2 jlg(drTo
* @version 1.0 CVR3
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*/ 5rUdv}.
public class MergeSort implements SortUtil.Sort{ gltBC${7wZ
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/* (non-Javadoc) T9q-,w/j;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2VCI 1E
*/ *HB-QIl
public void sort(int[] data) { #LN`X8Wz'
int[] temp=new int[data.length]; 3DG_QVg^v
mergeSort(data,temp,0,data.length-1); .w,q0<}
} ?[>3QE
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private void mergeSort(int[] data,int[] temp,int l,int r){ 5ms(Wd
int mid=(l+r)/2; G 9vpt M
if(l==r) return ; G9@0@2aY8
mergeSort(data,temp,l,mid); *k>n<p3dd
mergeSort(data,temp,mid+1,r); Q)z8PQl O
for(int i=l;i<=r;i++){ BDZ?Ez\Sg
temp=data; xi;`ecqS<
} RY*U"G0#w
int i1=l; 5i{j' {_(8
int i2=mid+1; EDs\,f}
for(int cur=l;cur<=r;cur++){ ,3 u}x,
if(i1==mid+1) rk)`\=No
data[cur]=temp[i2++]; dcWD(-
else if(i2>r) y$R_.KbO
data[cur]=temp[i1++]; ##4HYQ%E
else if(temp[i1] data[cur]=temp[i1++]; Mh
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else )sQ*Rd@t[8
data[cur]=temp[i2++]; -RK- Fu<e
} uhutg,[
} m<2M4u
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} 9]o-O]7/
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改进后的归并排序: -;k+GrLr^
"Os_vlapHo
package org.rut.util.algorithm.support; xFg>SJ7]
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import org.rut.util.algorithm.SortUtil; S?BG_J6A7
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/** 1 I",L&S1
* @author treeroot {P#|zp 4C{
* @since 2006-2-2 U\!X,a*ts{
* @version 1.0 CQDkFQq-dq
*/ -1ub^feJ,
public class ImprovedMergeSort implements SortUtil.Sort { n>U5R_T
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private static final int THRESHOLD = 10; 4]}'Hln*U
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/* mXfXO*Cnp
* (non-Javadoc) VBcPu
* QUQ'3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `,*5wBC
*/ 1D!<'`)AY
public void sort(int[] data) { #
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int[] temp=new int[data.length]; WvZ8/T'x
mergeSort(data,temp,0,data.length-1); }|5Pr(I
} Fh9h,'
V"
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private void mergeSort(int[] data, int[] temp, int l, int r) { .y:U&Rw4
int i, j, k; mBON$sF|
int mid = (l + r) / 2; b<gr@ WF
if (l == r) >!)DM]Ri
return; YQA,f#
if ((mid - l) >= THRESHOLD) Q#[9|A9
mergeSort(data, temp, l, mid); W-lN>]5}m
else fZA4q0
insertSort(data, l, mid - l + 1); }txX;"/
if ((r - mid) > THRESHOLD) (Px OE
mergeSort(data, temp, mid + 1, r); Vj>8a)"B5a
else sZF6h=67D
insertSort(data, mid + 1, r - mid); <0q;NrvUb
Qv/=&_6
for (i = l; i <= mid; i++) { *<ewS8f*6
temp = data; 0'?L#K
} UN<]N76!
for (j = 1; j <= r - mid; j++) { Gjo`
temp[r - j + 1] = data[j + mid]; u!qP
} h>OfOx/{q9
int a = temp[l]; #$qTFN
int b = temp[r]; \6*I'|5d
for (i = l, j = r, k = l; k <= r; k++) { hTi$.y!k
if (a < b) { #|PS&}6wU
data[k] = temp[i++]; xe&i^+i
a = temp; 3WIk
} else { O/(xj2~$J
data[k] = temp[j--]; vTw>JNVI
b = temp[j]; GYUn6P
} w}cPs{Vi"
} j]/RC(;?
} fMyti$1~
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/** ]}2ZttQ?
* @param data '}bgLv
* @param l ;cN{a&
* @param i y>e.~5;
*/ _[ZO p ~
private void insertSort(int[] data, int start, int len) { <
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C/6V9;U
} :'*~uJrR
} \7'{g@C(
} ?"g2v-jTK
} U2s /2 [.
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堆排序: K?$^@N
** G9H
package org.rut.util.algorithm.support; {8,J@9NU
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import org.rut.util.algorithm.SortUtil; B%+T2=&$7
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/** ~|xA4u5LG
* @author treeroot
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* @since 2006-2-2 M%;hB*9
* @version 1.0 v^iL5y!
*/ yFlm[K5YD
public class HeapSort implements SortUtil.Sort{ 9.B
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/* (non-Javadoc) A` o8'+`C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7CTFOAx#
*/ |3yL&"
public void sort(int[] data) { oJ|j#+Ft
MaxHeap h=new MaxHeap(); SPmq4
h.init(data); eb"5-0
for(int i=0;i h.remove(); Z lzjVU/E
System.arraycopy(h.queue,1,data,0,data.length); ptxbDzOz
} JKGe"
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private static class MaxHeap{ yT9@!]^L
%
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void init(int[] data){ 1gN=-AC
this.queue=new int[data.length+1]; !LN?PKJ
for(int i=0;i queue[++size]=data; :mn>0jK,N
fixUp(size); Cg?&wj<
} d;9FB[MmOJ
} ls:w8&`*
A*P|e-&Q8
private int size=0; t+T4-1 3a
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private int[] queue; s
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public int get() { =\:qo'l
return queue[1]; s?,Ek
} Opc
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3r."j2$Hs0
public void remove() { .I0qG g
SortUtil.swap(queue,1,size--); s6.M \^
fixDown(1); 2OR{[L*
} $jqq
`n_
file://fixdown 8jo p_PG'
private void fixDown(int k) { 8~z~_TD6m@
int j; kH7(@Pa
while ((j = k << 1) <= size) { nWYN Np?h
if (j < size %26amp;%26amp; queue[j] j++; Vi]W |bP
if (queue[k]>queue[j]) file://不用交换 =Bhe'.]QSx
break; -^h' >.
SortUtil.swap(queue,j,k); o{q{!7DH@
k = j; #S*/bao#
} v8[I8{41
} 4\u1TYR
private void fixUp(int k) { z Q`jP$2
while (k > 1) { ^^as'Dk
int j = k >> 1; [b>Fn%y
if (queue[j]>queue[k]) $ig0j`
break; D" rK(
SortUtil.swap(queue,j,k); J1sv[$9
k = j; hp7|m0.JW
} ?6un4EVL{
} UK O[r;
^!ZC?h!rG
} YS@ypzc/
J1I ;Jgql(
} ERE)A-8
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SortUtil: TNY&asQo
GyIT{M}KV
package org.rut.util.algorithm; ,<tX%n`v=
n;+LH9
import org.rut.util.algorithm.support.BubbleSort; Hmd]
FC,_
import org.rut.util.algorithm.support.HeapSort; b#toM';T
import org.rut.util.algorithm.support.ImprovedMergeSort; X#TQ_T"
import org.rut.util.algorithm.support.ImprovedQuickSort; I]<_rN8~ o
import org.rut.util.algorithm.support.InsertSort; B!_mC<*4`X
import org.rut.util.algorithm.support.MergeSort; (#Gw1
import org.rut.util.algorithm.support.QuickSort; ^O<&f D
import org.rut.util.algorithm.support.SelectionSort; J|kR5'?x
import org.rut.util.algorithm.support.ShellSort; ()Y4v
TKY*`?ct
/** ,t9^j3Ixg
* @author treeroot y 4I6
* @since 2006-2-2 :'3XAntZA
* @version 1.0 Raxrb=7
*/ iAa.}CI,zB
public class SortUtil { gVv>9W('
public final static int INSERT = 1; SmdjyK1~8
public final static int BUBBLE = 2; =`:K{loxq
public final static int SELECTION = 3; 1V4s<m>#
public final static int SHELL = 4; qx8fRIK%
public final static int QUICK = 5; o+QE8H43
public final static int IMPROVED_QUICK = 6; f]|ysf
public final static int MERGE = 7; YoZFwRQU
public final static int IMPROVED_MERGE = 8; r(aLEJ"u?
public final static int HEAP = 9; A3no~)wZn
l(u.I2^o
public static void sort(int[] data) { *`\Pr
sort(data, IMPROVED_QUICK); Xti[[s J
} O[s{ Gk'>
private static String[] name={ s'a/j)^
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" t2"O
}; {fF3/tL
k*E\B@W>
private static Sort[] impl=new Sort[]{ )-
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new InsertSort(), 36%nB*
new BubbleSort(), xtE_=5$~
new SelectionSort(), !?p%xj?
new ShellSort(), !*m5F8Qm?A
new QuickSort(), LuSLkLN
new ImprovedQuickSort(), %Bn?n{/
new MergeSort(), V |/NB
new ImprovedMergeSort(), ') gi%
new HeapSort() 8a="/J
}; XKttZOiGT
i;jw\ed
public static String toString(int algorithm){ xA1hfe.9
return name[algorithm-1]; X*39c
b(b
} r>"
65p?Igb
public static void sort(int[] data, int algorithm) { 04'~ta(t
impl[algorithm-1].sort(data); H]p!\H
} "@d[h ,TM
wsN?[=l{s
public static interface Sort { /VzI'^
public void sort(int[] data); J(%0z:exs
} j!4et;
a1.Ptf eW|
public static void swap(int[] data, int i, int j) { _$f9]bab
int temp = data; :Jy'#c
data = data[j]; C] 9p5Hs
data[j] = temp; *R3f{/DK
} PBxCx3a{
} X4t s)>"d