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[JAVA]用Java实现的各种排序

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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。 e3S6+H),I  
插入排序: bzJKoxU  
6:B5PJq  
package org.rut.util.algorithm.support; A:D\!5=  
V?_%Y<|L  
import org.rut.util.algorithm.SortUtil; LL[ +QcH  
/** +ixDB0"\  
* @author treeroot dH`a|SVW9  
* @since 2006-2-2 c'G\AbUVjE  
* @version 1.0 ]6:5<NW  
*/ >p<( CVX[  
public class InsertSort implements SortUtil.Sort{ hA@X;Mh^w  
@W. `'b-  
/* (non-Javadoc) :+R5"my  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M  j5C0P(  
*/ ZzKn,+  
public void sort(int[] data) {  vo::y"  
int temp; {#[a4@B0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "Q/3]hc.  
} ?0?'  
} PN.6BJvu  
} qHKZ5w  
Yt#($}p  
} ko5\*!|:lj  
w}YHCh  
冒泡排序: )j9FB  
9723f1&Vd  
package org.rut.util.algorithm.support; {>+$u"*  
5vpf;  
import org.rut.util.algorithm.SortUtil; RU{}qPs?  
1B1d>V$*  
/** TuF:m"4  
* @author treeroot B "qG-ci  
* @since 2006-2-2 JfVay I=  
* @version 1.0 <;XJ::d  
*/ yr=r? h}  
public class BubbleSort implements SortUtil.Sort{ VKs\b-1  
"|Pl(HX  
/* (non-Javadoc) /C(L(X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YLCwo]\+>  
*/ a6]!4  
public void sort(int[] data) { NNfCJ|  
int temp; nuCK7X  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;=7z!:)  
if(data[j] SortUtil.swap(data,j,j-1); ~'U;).C  
} )T4L^^`  
} `773& \PK  
} Qb|dp~K.M  
} Kz<xuulr  
fg1y@Dj/&  
} p/:5 bvA  
%/^d]#  
选择排序: 3jI.!xD`  
S :}s|![p  
package org.rut.util.algorithm.support; V\G>e{  
A]J^{h0 k  
import org.rut.util.algorithm.SortUtil; hD,- !R  
ko:I.6-K  
/** va<+)b\  
* @author treeroot \ bhok   
* @since 2006-2-2 QB.7n&u  
* @version 1.0 ~FsUK;?  
*/ kN^)6  
public class SelectionSort implements SortUtil.Sort { B.WJ6.DkS  
uqyf3bK  
/* ry T8*}o  
* (non-Javadoc) [a`i{(!  
* 5{5ABV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OM.^>=  
*/ M ?3N  
public void sort(int[] data) { w %zw+E  
int temp; F9<OKcXH  
for (int i = 0; i < data.length; i++) { Ya_6Zd4O  
int lowIndex = i; [x)e6p)  
for (int j = data.length - 1; j > i; j--) { j~8+,:  
if (data[j] < data[lowIndex]) { ~3%3{a a  
lowIndex = j; U\ L"\N7  
} HUghl2L.<  
} l<HRD  
SortUtil.swap(data,i,lowIndex); %b?Pasf.  
} &-* nr/xT  
} k|_2aQ02  
"4`%NA  
} |. 6@-h~8  
f@{C3E dd  
Shell排序: |]q=D1/A  
saT9%?4-  
package org.rut.util.algorithm.support; H94.E|Q\+  
p3S c4  
import org.rut.util.algorithm.SortUtil; kmoJ`W} N  
Z])_E 6.  
/** n,F00Y R  
* @author treeroot % n{W  
* @since 2006-2-2 ${+.1"/[  
* @version 1.0 ! lF^~x  
*/ :qbG%_PJ  
public class ShellSort implements SortUtil.Sort{ VMWg:=~$  
J4vKfxEg  
/* (non-Javadoc) !BX62j\?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f+920/>!Z  
*/ #SYWAcTkO}  
public void sort(int[] data) { sfV.X:ev  
for(int i=data.length/2;i>2;i/=2){ =l(JJ  
for(int j=0;j insertSort(data,j,i); *p3P\ H^5  
} SSXS  
} 64lEB>VNm  
insertSort(data,0,1); eTc`FXw`  
} ETOc4hMO  
hkJZqUA  
/** jE#8&P~  
* @param data CwvNxH#LVu  
* @param j /RM-+D:Y  
* @param i k)s 7Ev*  
*/ 78)^vvn5~  
private void insertSort(int[] data, int start, int inc) { /)1-^ju  
int temp; TJpv"V  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); K5>:Wi Y  
} `VsGa  
} Lm|X5RVq  
} S:YL<_oI|  
j 7 URg>i0  
} q?L(V+X  
_);Kb/  
快速排序: t {"iIz_S  
Elp!,(+&6  
package org.rut.util.algorithm.support; GU3/s&9  
bY~v0kg  
import org.rut.util.algorithm.SortUtil; F 29AjW86  
1%"` =$q%  
/** ^rwSbM$  
* @author treeroot lc-|Q#$3$  
* @since 2006-2-2 Bs?F*,zDJ  
* @version 1.0 |esjhf}H>v  
*/ V+24-QWh  
public class QuickSort implements SortUtil.Sort{ QNXxpoS#  
}NCvaO  
/* (non-Javadoc) W~3tQ!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K]8wW;N4  
*/ mj=|oIMwT  
public void sort(int[] data) { BA-nxR  
quickSort(data,0,data.length-1); H4NEB1 TO>  
} )F9r?5}v4x  
private void quickSort(int[] data,int i,int j){ 9/Dt:R3QU  
int pivotIndex=(i+j)/2; N| Pm|w*?  
file://swap .,Qnn}:l  
SortUtil.swap(data,pivotIndex,j); ^gzNP#A<'o  
gi'agB^  
int k=partition(data,i-1,j,data[j]); A#S:_d  
SortUtil.swap(data,k,j); Qiw4'xQm  
if((k-i)>1) quickSort(data,i,k-1); t5X lR]` w  
if((j-k)>1) quickSort(data,k+1,j); 9D{).f0  
f9UaAdJ(  
} "5:f{GfO#v  
/** lM^!^6=v0l  
* @param data A.9'pi'[9Q  
* @param i /\cu!yiX  
* @param j oh~ vo!  
* @return [IFRwQ^%_O  
*/ ;Ia1L{472m  
private int partition(int[] data, int l, int r,int pivot) { jHH  
do{ O/9%"m:i  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WV1 Z  
SortUtil.swap(data,l,r); |HG b.^f?  
} qLi9ym, ]  
while(l SortUtil.swap(data,l,r);  |7zP 8  
return l; \.P}`Bpa  
} G*i#\   
5jV97x)BGx  
} 4>VZk^%b#  
R.IUBw5;/  
改进后的快速排序: J xm9@,  
BddECY,z  
package org.rut.util.algorithm.support; NcBe|qxQ  
Z,!Xxv;4  
import org.rut.util.algorithm.SortUtil; yI.H4Dl<  
mqk(UOK`  
/** ' P`p.5nH  
* @author treeroot t"/"Ge#a  
* @since 2006-2-2 WG/J4H`Od  
* @version 1.0 5A$az03y$\  
*/ c4>sE[]  
public class ImprovedQuickSort implements SortUtil.Sort { .xkV#ol  
#r.` V!=  
private static int MAX_STACK_SIZE=4096; #oJbrh9J6  
private static int THRESHOLD=10; _~ZQ b  
/* (non-Javadoc) xPMyG);  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BX(d"z b<  
*/ ? ZHE8  
public void sort(int[] data) { ?h)3S7  
int[] stack=new int[MAX_STACK_SIZE]; I49l2>  
{L4>2rF  
int top=-1; ix7 e] )m(  
int pivot; ]9&q'7*L  
int pivotIndex,l,r; YD46Z~$  
"Dl9<EZ  
stack[++top]=0; ?ey&Un"  
stack[++top]=data.length-1; MAe<.DHY  
b^,Mw8KsO  
while(top>0){ x)VIA]  
int j=stack[top--]; +GYMJK`S+  
int i=stack[top--]; G:c8`*5Q  
2r}uE\GN  
pivotIndex=(i+j)/2; \W`}L  
pivot=data[pivotIndex]; J'ZFIT_>  
FW)^O%2s  
SortUtil.swap(data,pivotIndex,j); I0w@S7  
'!^E92  
file://partition N _~KZQ11^  
l=i-1; Uty(sDtu  
r=j; q"+ q  
do{ `+hy#1]  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Md>f  
SortUtil.swap(data,l,r); ok3  
} a|P~LMPM  
while(l SortUtil.swap(data,l,r); YKe0:cWc  
SortUtil.swap(data,l,j); 85|95P.<  
+# RlX3P  
if((l-i)>THRESHOLD){ }.MoDR3\  
stack[++top]=i; L_U3*#Zdz7  
stack[++top]=l-1; c7g.|R  
} 827)n[#%|  
if((j-l)>THRESHOLD){ =EcIXDzC>  
stack[++top]=l+1; rX!+@>4_L  
stack[++top]=j; 1 x\VdT  
} &=z1$ih>2\  
o7Cnyy#:  
} >2lAy:B5  
file://new InsertSort().sort(data); ~w1{zxs  
insertSort(data); uZ/7t(fy  
} N{^>MRK=5  
/** g\qL}:  
* @param data n=G>y7b  
*/ | 3N.5{  
private void insertSort(int[] data) { sm2p$3v  
int temp; /=muj9|+s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D]pK=247  
} 7"n)/;la  
} 6)#- 5m  
} )&Kn (l)  
+e0dV_T_>  
} TOco({/_/  
fXu~69_  
归并排序:  Qh|-a@  
yZ;k@t_WRD  
package org.rut.util.algorithm.support; Ufaqhh  
1o|0x\q  
import org.rut.util.algorithm.SortUtil; ''(fH$pY  
v?YdLR  
/** $kkp*3{ot  
* @author treeroot |D;"D  
* @since 2006-2-2 vLnq%@x  
* @version 1.0 Q(=Vk~v  
*/ m~Y'$3w  
public class MergeSort implements SortUtil.Sort{ ' 1P=^  
ZVdsxo<  
/* (non-Javadoc) .7pGx*WH^Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q{qj  
*/ iHE0N6%q  
public void sort(int[] data) { P~Te+ -jX}  
int[] temp=new int[data.length]; *xX( !t'  
mergeSort(data,temp,0,data.length-1); IqhICC1V-  
} 7 >PF~=  
CJMaltPp&  
private void mergeSort(int[] data,int[] temp,int l,int r){ t+=12{9;f  
int mid=(l+r)/2; Ad]<e?oN=  
if(l==r) return ; ']d!?>C@o  
mergeSort(data,temp,l,mid); jiA5oX^g  
mergeSort(data,temp,mid+1,r); 4Vu'r?  
for(int i=l;i<=r;i++){ _W@,@hOH  
temp=data; fa!3/X+  
} lFp!XZ!  
int i1=l; f MY;  
int i2=mid+1; ).0V%}>  
for(int cur=l;cur<=r;cur++){ F!OOrW]p0  
if(i1==mid+1) a%7"_{s1  
data[cur]=temp[i2++]; ,+ns {ppn  
else if(i2>r) ;[{:'^n  
data[cur]=temp[i1++]; z:Xj_ `p  
else if(temp[i1] data[cur]=temp[i1++]; N,j>;x3xT  
else !lQ#sL`  
data[cur]=temp[i2++]; Z?~gQ $  
} [{S;%Jj*X/  
} ?%cn'=>ZI  
-yX.Jv  
} jIAW-hc]  
-`zG_]=-  
改进后的归并排序: js:C mnI  
do:QH.q8)  
package org.rut.util.algorithm.support; tA`mD>[  
*.kj]BoO  
import org.rut.util.algorithm.SortUtil; Cz'xGW{  
!lR0w|  
/** KWFyw>*)  
* @author treeroot m >]>$=%  
* @since 2006-2-2 eaV3) uP  
* @version 1.0 Dk)@>l:gI,  
*/ `fQM  
public class ImprovedMergeSort implements SortUtil.Sort { `t{D7I7  
;Y Dv.I  
private static final int THRESHOLD = 10; )8pc f`h{  
R#Y50h zT  
/* O24Jj\"  
* (non-Javadoc) [ 3$.*   
* tO?21?AD D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7*zB*"B'1t  
*/ w) =eMdj\o  
public void sort(int[] data) { f!5F]qP>-  
int[] temp=new int[data.length]; ;EK(b  
mergeSort(data,temp,0,data.length-1); -L@]I$Yo  
} +VSZhg,Np8  
>?S\~Y  
private void mergeSort(int[] data, int[] temp, int l, int r) { x Z|&/Ci  
int i, j, k; %z(9lAe  
int mid = (l + r) / 2; WwW"fkv  
if (l == r) pG0!ALT  
return; |if'_x1V  
if ((mid - l) >= THRESHOLD) |WB"=PE  
mergeSort(data, temp, l, mid); ]}BB/KQy^  
else Cf Qf7-  
insertSort(data, l, mid - l + 1); fH-NU-"  
if ((r - mid) > THRESHOLD) j h; 9 [  
mergeSort(data, temp, mid + 1, r); iPMB$SdfO  
else ,+~2&>wj  
insertSort(data, mid + 1, r - mid); Q 2*/`L}m\  
N1PECLS?  
for (i = l; i <= mid; i++) { O x{Q.l  
temp = data; |kId8WtA  
} q#;BhPc  
for (j = 1; j <= r - mid; j++) { m'd^?Qc  
temp[r - j + 1] = data[j + mid]; ;xL67e%?  
} h]qT1( I  
int a = temp[l]; F vj{@B!  
int b = temp[r]; SV&kWbS  
for (i = l, j = r, k = l; k <= r; k++) { !d\t:0;  
if (a < b) { ,,S9$@R  
data[k] = temp[i++]; K6E}";;  
a = temp; <#>Oy&E  
} else { "cwR^DoD&  
data[k] = temp[j--]; f:xUPH?+  
b = temp[j]; [1NaH  
} i#k-)N _$  
} u0xQ;BQ  
} *]5z^> q;7  
*%3oyWwCd  
/** ,NDh@VYe  
* @param data !;i*\ a  
* @param l 5!~!j "q  
* @param i S0F@#mSQ?  
*/ fVYiwE=F  
private void insertSort(int[] data, int start, int len) { LaDY`u0G%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Gi*<~`Gr  
} P2On k l  
} kg:l:C)Tq  
} VO9XkA7  
} [KMS<4t'  
C(s\LI!r  
堆排序: w}d}hI  
P Q,+hq  
package org.rut.util.algorithm.support; jA,|JgN|n  
)i @1X H"D  
import org.rut.util.algorithm.SortUtil; &RWM<6JP  
KCD5*xH  
/** D%A@lMru  
* @author treeroot J2'K?|,m  
* @since 2006-2-2 QskUdzQ=  
* @version 1.0 i(0hvV>'  
*/ BH5w@  
public class HeapSort implements SortUtil.Sort{ prUHjS  
85} ii{S  
/* (non-Javadoc) Bq *[c=(2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q8/ihA6:  
*/ ms7SoY bSu  
public void sort(int[] data) { IQIbz{bMx  
MaxHeap h=new MaxHeap(); $Buf#8)F*  
h.init(data); )i0 $j)R  
for(int i=0;i h.remove(); U,HIB^= R  
System.arraycopy(h.queue,1,data,0,data.length); 9Fk4|+OJ  
} %lV@:"G  
[7RheXO <  
private static class MaxHeap{ gGmxx,i  
FRgLlp8x  
void init(int[] data){ {EL'd!v7e  
this.queue=new int[data.length+1]; -Un=T X  
for(int i=0;i queue[++size]=data; uWTN 2jr  
fixUp(size); N#UXP5C(  
} b_vVB`>  
} P% Q@9kO>  
t=i/xG:5  
private int size=0; qC..\{z  
V}SyD(8~  
private int[] queue; iD<6t_8),  
\e|U9;Mf  
public int get() { Mb/L~gd"  
return queue[1]; 9Eg&CZ,9$D  
} JR)/c6j  
SF^x=[ir  
public void remove() { .EG* +,  
SortUtil.swap(queue,1,size--); SW#BZ3L  
fixDown(1); E+z18Lf?  
} =53b Lzr  
file://fixdown )tD6=Iz^5  
private void fixDown(int k) { .gq(C9<B[  
int j; <5I1DF[  
while ((j = k << 1) <= size) { 5q Rc4d'  
if (j < size %26amp;%26amp; queue[j] j++; r4?b0&Xq  
if (queue[k]>queue[j]) file://不用交换 5>P7]?U.]  
break; JpmB;aL#%  
SortUtil.swap(queue,j,k); ]n5"Z,K  
k = j; ]^ #`j  
} zP&q7 t;>  
} ZBJ3VK  
private void fixUp(int k) { -w~(3(  
while (k > 1) { .'/l'>  
int j = k >> 1; b_=8!Q.:  
if (queue[j]>queue[k]) 2e.N"eLNt  
break; IA2GUnUhu  
SortUtil.swap(queue,j,k); b=1%pX_  
k = j; O3Uh+gKQ  
} 1ef'7a7e8  
}  w;+ br  
AW/wI6[T  
} (Y2m md  
.T$D^?G!D  
} 13a(FG  
[4XC #OgA  
SortUtil: vbp-`M(  
;v_V+t <$  
package org.rut.util.algorithm; O:^'x*}  
l E^*t`+  
import org.rut.util.algorithm.support.BubbleSort; c#QFG1  
import org.rut.util.algorithm.support.HeapSort; qo_]ZKL44  
import org.rut.util.algorithm.support.ImprovedMergeSort; e\9g->DUs  
import org.rut.util.algorithm.support.ImprovedQuickSort; _!!}'fMC  
import org.rut.util.algorithm.support.InsertSort; VNj@5s  
import org.rut.util.algorithm.support.MergeSort; ]'k[u  
import org.rut.util.algorithm.support.QuickSort; ?'sXgo.}  
import org.rut.util.algorithm.support.SelectionSort; !)c=1EX]"  
import org.rut.util.algorithm.support.ShellSort; ],[)uTZc  
-CD\+d  "  
/** ^i'y6J  
* @author treeroot :Q-oV8t{  
* @since 2006-2-2 d0 -~| `5  
* @version 1.0 HH8;J66I&  
*/ etyCrQ ?U  
public class SortUtil { ZXt?[Ll  
public final static int INSERT = 1; ~+HoSXu@E  
public final static int BUBBLE = 2; k|FSz#Y  
public final static int SELECTION = 3; Jq .L:>x  
public final static int SHELL = 4; 5+K;_)   
public final static int QUICK = 5; :<GfETIs  
public final static int IMPROVED_QUICK = 6; >vujZw_0>  
public final static int MERGE = 7; q8sb n  
public final static int IMPROVED_MERGE = 8; ,[`$JNc  
public final static int HEAP = 9; *vnXlV4L  
xmr|'}Pt[  
public static void sort(int[] data) { p)3nyN=|_  
sort(data, IMPROVED_QUICK); #mLuU  
} ?2ItB`<(  
private static String[] name={ ntGq" o  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" })[($$f/  
}; ]1sNmi$T  
DZs^ 2Zc  
private static Sort[] impl=new Sort[]{ i8~$o:&HT  
new InsertSort(), c!Dc8=nE0m  
new BubbleSort(), xU}M;4kH~  
new SelectionSort(), 73 V"s  
new ShellSort(), }Hy ~i  
new QuickSort(), PZ,z15PG]  
new ImprovedQuickSort(), >uy%-aXiVa  
new MergeSort(), P`TIaP9%E  
new ImprovedMergeSort(), +xj "hX>3  
new HeapSort() -(IC~   
}; {DBIonY];  
>F3.c%VU]w  
public static String toString(int algorithm){ J`oTes,  
return name[algorithm-1]; }U[-44r:  
} 9y^/GwUQ  
6E|S  
public static void sort(int[] data, int algorithm) { {QQl$ys/  
impl[algorithm-1].sort(data); #$'FSy#  
} Wx]d $_  
|!LnAh  
public static interface Sort { .Yx_:h=u  
public void sort(int[] data); ZL_[4 Y  
} 6y  Wc1  
(oaYF+T  
public static void swap(int[] data, int i, int j) { 6sB$<#  
int temp = data; , 2`~ NPb  
data = data[j]; H}nJbnU  
data[j] = temp; HZZDv+  
} nl n OwyMJ  
} #w>~u2W  
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