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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。 S{06bLXU"  
插入排序: (Nf.a4O  
&,xM;8b  
package org.rut.util.algorithm.support;  -W ,b*U  
7y3; F7V  
import org.rut.util.algorithm.SortUtil; VdgPb (  
/** g*uO IF  
* @author treeroot -0{WB(P  
* @since 2006-2-2 >F v8 -  
* @version 1.0 nEYJ?_55  
*/ <Lt$qV-#  
public class InsertSort implements SortUtil.Sort{  '}=M~  
2I  
/* (non-Javadoc) |9h[Q[m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Z4p$o dk  
*/ Q2o:wXvj  
public void sort(int[] data) { @\a- =  
int temp; {iRNnh   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o/xE O=AW  
} /(w5S',EL  
} K;~dZ  
} *4bV8T>0Z  
Wil +"[Ge  
} hI yfF  
G(- `FH  
冒泡排序: R;%iu0  
e)M1$  
package org.rut.util.algorithm.support; 6ZE] 7~X  
W*0KAC`m  
import org.rut.util.algorithm.SortUtil; MB)xL-jO  
k`d  
/** :MpCj<<[  
* @author treeroot ?s//a_nL*  
* @since 2006-2-2 |7argk+  
* @version 1.0 .IqS}Rh  
*/ JGtdbD?Fw  
public class BubbleSort implements SortUtil.Sort{ Je/R'QP^8  
m{g{"=}YR  
/* (non-Javadoc) o]vdxkU]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <K43f#%  
*/ tP\Utl-0  
public void sort(int[] data) { {0|^F!1z  
int temp; 6l4l74  
for(int i=0;i for(int j=data.length-1;j>i;j--){ *]LM2J  
if(data[j] SortUtil.swap(data,j,j-1); B>R6j}rh'k  
} 4x:fOhtP  
} yk=H@`~!  
} pCq{F*;  
} ZjzQv)gZ  
A9"ho}<  
} O_E[F E:+  
%bAv.'C  
选择排序: 'b-}KDP  
<_D+'[  
package org.rut.util.algorithm.support; _^KD&t%!+y  
WPPmh~:  
import org.rut.util.algorithm.SortUtil; noacnQ_I$  
9N9;EY-U  
/** (*|hlD~  
* @author treeroot Q@2Smtu~c  
* @since 2006-2-2 _ ZJP]5  
* @version 1.0 1e }wDMU(  
*/ K\uR=L7  
public class SelectionSort implements SortUtil.Sort { #q%&,;4  
u|+O%s TQ  
/* =!Ok079{[  
* (non-Javadoc) [ z?<'Tj  
* A;h~Fx6s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (|S e+Y#e,  
*/ mp}ZHufG  
public void sort(int[] data) { !bQ5CB  
int temp; BwbvZfV|  
for (int i = 0; i < data.length; i++) { O<fbO7.-  
int lowIndex = i; 9=:!XkT.  
for (int j = data.length - 1; j > i; j--) { .Zo8KwkFY  
if (data[j] < data[lowIndex]) { @;pTQ 5 I  
lowIndex = j; ^"l4   
} GQq2;%RrF  
} JPmW0wM  
SortUtil.swap(data,i,lowIndex); ]  OR ]  
} !uHX2B+~  
} Tf` ~=fg%  
]@Q14   
} Wa ,  #  
e)O6k7U$  
Shell排序: /,wG$b+  
q_JES4ofx  
package org.rut.util.algorithm.support; uS3J^=>@(a  
{R\"x|  
import org.rut.util.algorithm.SortUtil; _.zW[;84b  
wtaeF+u-R-  
/** 7h,SX]4Q  
* @author treeroot "|(+~8[  
* @since 2006-2-2 UfXqcyY(  
* @version 1.0 ]QRhTz  
*/ Xrc0RWXB8  
public class ShellSort implements SortUtil.Sort{ B]#0]-ua  
PO1sVP.S  
/* (non-Javadoc) NJwcb=*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) % ?@PlQ  
*/ aOETmsw  
public void sort(int[] data) { Ub%5# <k|-  
for(int i=data.length/2;i>2;i/=2){ >}Za)  
for(int j=0;j insertSort(data,j,i); Syo1Dq6z.  
} uv eTx  
} L6O* aZ|  
insertSort(data,0,1); {b}Ri&oEOH  
} 8N'[ )Jw  
m6bAvy]3<t  
/** ULNU'6  
* @param data ?l &S:` L  
* @param j S)T~vK(n  
* @param i $<OX\f%  
*/ nZ0- Kb  
private void insertSort(int[] data, int start, int inc) { #"|</*% >  
int temp; WnyEdYA  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); KC[ql}JP  
} F2saGpGH  
} xrs?"]M[  
} x* ?-KS|  
|#^wYZO1U  
} HZX(kYV  
W1dpKv  
快速排序: 9w9[0BX#  
e$u=>=jV]  
package org.rut.util.algorithm.support; Z ]V^s8>  
>hHjDYjbf  
import org.rut.util.algorithm.SortUtil; l 8qCg/ew  
q$L=G  
/** N_Q)AXr)  
* @author treeroot A)/8j2  
* @since 2006-2-2 ~)xg7\k  
* @version 1.0 q~]S5  
*/ @-qS[bV  
public class QuickSort implements SortUtil.Sort{ +L03. rf  
h8B:}_Cu  
/* (non-Javadoc) W5z<+8R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Lj=%&  
*/ ur7sf$  
public void sort(int[] data) { s\O4D*8  
quickSort(data,0,data.length-1); N1/)F k-z  
} :59fb"^$  
private void quickSort(int[] data,int i,int j){ <q\OREMsq  
int pivotIndex=(i+j)/2; &.^(, pt  
file://swap tQ~vLPi$  
SortUtil.swap(data,pivotIndex,j); `s1>7XWf  
\vwsRT 1  
int k=partition(data,i-1,j,data[j]); a4{~.Mp  
SortUtil.swap(data,k,j); wzX(]BG  
if((k-i)>1) quickSort(data,i,k-1); oE/g) m%  
if((j-k)>1) quickSort(data,k+1,j); Xf 0)i  
K!~j}z*  
} 9|BH/&$  
/** <KY \sb9  
* @param data 5\!t!FL_  
* @param i (dvsGYT|.  
* @param j w8veh[%3n  
* @return >I*)0tE  
*/ *ay&&S*  
private int partition(int[] data, int l, int r,int pivot) { [Ey[A|g  
do{ <e&88{jJ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); yBKEw(1  
SortUtil.swap(data,l,r); \iL{q^Im  
} xD.Uh}:J  
while(l SortUtil.swap(data,l,r); 3(o}ulp  
return l; '0b!lVe  
} 1F|e/h%^  
bqPaXH n  
} b6(LoN.  
V8KdY=[  
改进后的快速排序: E^s<5BC;  
IN^dJ^1+  
package org.rut.util.algorithm.support; ^+ J3E4  
+jD*Jtb<  
import org.rut.util.algorithm.SortUtil; <Pn]{N  
t GS>f>i  
/** !&(^R<-id  
* @author treeroot &0`[R*S  
* @since 2006-2-2 Sgp1p}  
* @version 1.0 tRtoA5  
*/ 9M12|X\]8  
public class ImprovedQuickSort implements SortUtil.Sort { QH5[}zs8  
6lAHB*`  
private static int MAX_STACK_SIZE=4096; ZbAg^2  
private static int THRESHOLD=10; 1Zo"Xb  
/* (non-Javadoc) w. c]   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "L9yG:  
*/ Hd_W5R  
public void sort(int[] data) { vk><S|[n  
int[] stack=new int[MAX_STACK_SIZE]; Mn<#rBE B  
e+~Q58oD  
int top=-1; L,\wB7t  
int pivot; b[/uSwvi  
int pivotIndex,l,r; Pd8zdzf{  
zz m[sX}  
stack[++top]=0; x{_3/4  
stack[++top]=data.length-1; q)f-z\  
a%YohfsY?U  
while(top>0){ lKSd]:3Xm  
int j=stack[top--]; S_ER^Pkg  
int i=stack[top--]; 4\Q pS  
.,*68S0k7  
pivotIndex=(i+j)/2; U(6=;+q  
pivot=data[pivotIndex]; 7=@3cw H  
WKvG|YRDq  
SortUtil.swap(data,pivotIndex,j); o;"Phc.  
d:!A`sk7  
file://partition dWi:V 7t+  
l=i-1; #qDMUN*i  
r=j; N <e72x  
do{ *=b36M   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); efrVF5,y?  
SortUtil.swap(data,l,r); e-EY]%JO  
} e. '6q ($3  
while(l SortUtil.swap(data,l,r); -d)+G%{  
SortUtil.swap(data,l,j); 3/s" ;Kg,  
6 k+4R<  
if((l-i)>THRESHOLD){ Wi2Tg^  
stack[++top]=i; We)l_>G  
stack[++top]=l-1; 5Z_7Sc  
} x^V9;V@6  
if((j-l)>THRESHOLD){ R>;m6Rb_  
stack[++top]=l+1; M" vd /F V  
stack[++top]=j; I6vy:5d  
} ]L/AW  
!m:rtPD'  
} d1BE;9*/7  
file://new InsertSort().sort(data); )cV*cDL1j  
insertSort(data); (RU\a]Ry  
} | IB4-p  
/** ,GUOq!z  
* @param data %U?1Gf e  
*/ @;t6Slc"~  
private void insertSort(int[] data) { RAU"  
int temp; 0BrAgv"3a_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {,+MaH  
} ><wYk)0E  
} e1/{bX5  
} Wy.^1M/n>~  
Ku`u%5<  
} ]114\JE  
),(HCzK`  
归并排序: {$QkerW3  
vf;&0j&`  
package org.rut.util.algorithm.support; brEA-xNWQ  
`e4gneQY  
import org.rut.util.algorithm.SortUtil; F[)5A5+:Y  
N~|Z@pU"  
/** ybU_x  
* @author treeroot N4)ZPLV  
* @since 2006-2-2 +SNjU"x  
* @version 1.0 6~^ M<E  
*/ ''Hx&  
public class MergeSort implements SortUtil.Sort{ e+<'=_x {  
]sZ! -q'8  
/* (non-Javadoc) ^v5<*uf%m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YL&)@h  
*/ `8/D$  
public void sort(int[] data) { 5tl( $j  
int[] temp=new int[data.length]; B}+li1k  
mergeSort(data,temp,0,data.length-1); (vFO'jtcB-  
} /|m0)H.>  
hQ (84u  
private void mergeSort(int[] data,int[] temp,int l,int r){ gy Ey=@L  
int mid=(l+r)/2; $.x,[R aN  
if(l==r) return ; U:0Ma 6<  
mergeSort(data,temp,l,mid); HCw,bRxm  
mergeSort(data,temp,mid+1,r); ,c,@WQ2:-  
for(int i=l;i<=r;i++){ an2Yluc;  
temp=data; 89x;~D1  
} G8&/I c  
int i1=l; GH \ Sy  
int i2=mid+1; 8n35lI ( [  
for(int cur=l;cur<=r;cur++){ zbI|3  
if(i1==mid+1) H128T8?r[  
data[cur]=temp[i2++]; m/3,;P.6  
else if(i2>r) jG{OLF6 !  
data[cur]=temp[i1++]; :DrF)1C  
else if(temp[i1] data[cur]=temp[i1++]; ;0lY_ii  
else 2ZEDyQM  
data[cur]=temp[i2++]; wC?$P  
} Xe&p.v  
} L1Jn@  
wjfq"7Q  
} ~owodc  
~dk97Z8  
改进后的归并排序: {&J~P&,k  
Zo,066'+[.  
package org.rut.util.algorithm.support; _F5*\tQ  
>p'{!k  
import org.rut.util.algorithm.SortUtil; z'7XGO'Lo  
_+.JTk  
/** 1m5*MY  
* @author treeroot [+_>g4M~%  
* @since 2006-2-2 BOWBD@y  
* @version 1.0 c]n"1YNm  
*/ >g m  
public class ImprovedMergeSort implements SortUtil.Sort { *%Fu/  
s94 *uZ(C/  
private static final int THRESHOLD = 10; S9{A}+"K  
qtmKX  
/* A'.=SA2.Y  
* (non-Javadoc) Mo5b @ [  
* `ZbFky{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G:3szz  
*/ RD46@Q`  
public void sort(int[] data) { 91]sO%3  
int[] temp=new int[data.length]; NWP!V@WG  
mergeSort(data,temp,0,data.length-1); VFzIBgJ3  
} L ^r & .N\  
!JyY&D~`  
private void mergeSort(int[] data, int[] temp, int l, int r) { #wo *2 (  
int i, j, k; E7M_R/7@y  
int mid = (l + r) / 2; /M+Du,  
if (l == r) Io|D u  
return; !sSq4K  
if ((mid - l) >= THRESHOLD) +<j7^AEG  
mergeSort(data, temp, l, mid); U2l3E*O  
else L SP p  
insertSort(data, l, mid - l + 1); 5 mC"8N1)  
if ((r - mid) > THRESHOLD) ,2^4"gIl  
mergeSort(data, temp, mid + 1, r); 'E+"N'M|  
else [:FiA?O]  
insertSort(data, mid + 1, r - mid); #c5jCy}n  
B6Eu."T  
for (i = l; i <= mid; i++) { 4(|yl^w  
temp = data; ,zltNbu\.(  
} -^546 7  
for (j = 1; j <= r - mid; j++) { __2<v?\  
temp[r - j + 1] = data[j + mid]; Qr9;CVW  
} dH!z<~  
int a = temp[l]; T*f/M  
int b = temp[r]; TI8r/P? ]V  
for (i = l, j = r, k = l; k <= r; k++) { KWZhCS?[(  
if (a < b) { PO`p.("h  
data[k] = temp[i++];  }:Gs ,  
a = temp; b:D92pH  
} else { iN[x *A|h  
data[k] = temp[j--]; !R"W2Z4h  
b = temp[j]; 2S{P(B   
} D]]wJQU2  
} xwf-kwF8^  
} %'yrIR  
4P&2Z0  
/** 80Dn!9j*  
* @param data MQQm3VaKS  
* @param l Lr:Qc#2  
* @param i yGdX>h  
*/ y%SxQA +\  
private void insertSort(int[] data, int start, int len) { wQSye*ec  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Zd6ik&S   
} k*\Bl4g  
} IT1YF.i  
} AJbCC  
} /ce;-3+  
dRX~eIw  
堆排序: WVdV:vJ-  
l1)~WqhE}  
package org.rut.util.algorithm.support; U!aM63F3  
vR!+ 8sy$  
import org.rut.util.algorithm.SortUtil; @-'a{hBR  
R}ki%i5|  
/** "bm|p/A  
* @author treeroot HIXAA?_eh=  
* @since 2006-2-2 \8`7E1d  
* @version 1.0 i6WH^IQM  
*/ 2.D2 o  
public class HeapSort implements SortUtil.Sort{ >A$L&8'C  
_MBhwNBxZ  
/* (non-Javadoc) >}+{;d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (/e&m=~  
*/ J~m$7T3Af  
public void sort(int[] data) { "do5@$p|  
MaxHeap h=new MaxHeap(); ppyy0E^M  
h.init(data); Vu:ZG*^  
for(int i=0;i h.remove(); u>*a@3$f  
System.arraycopy(h.queue,1,data,0,data.length); LwC?t3n  
} cx\E40WD  
;@wa\H[3v2  
private static class MaxHeap{ V<QpC5  
OS(`H5D  
void init(int[] data){ AYAU  
this.queue=new int[data.length+1]; O[ma% E*0  
for(int i=0;i queue[++size]=data; f%]@e9dD  
fixUp(size); -9b=-K.y  
} \p4*Q}t  
} X+4Uh I  
N]P~`)  
private int size=0; SZWNN#w60?  
TO6F  
private int[] queue; + -<8^y  
G\sx'#Whc  
public int get() { ynsYU(  
return queue[1]; Z",0 $Gxu  
} 5U2%X pO   
56Wh<i3  
public void remove() { 56pj(}eq  
SortUtil.swap(queue,1,size--); L4po1  
fixDown(1); 7ys' [G|}r  
} OX;bA^+}P  
file://fixdown fzJiW@-T  
private void fixDown(int k) { *).  
int j; +L09^I  
while ((j = k << 1) <= size) { L1kn="5  
if (j < size %26amp;%26amp; queue[j] j++; D[>:az `  
if (queue[k]>queue[j]) file://不用交换 L'wR$  
break; E2zL-ft.  
SortUtil.swap(queue,j,k); q,[;AHb  
k = j; RPX.?;":  
} EZj rX>"#  
} C^$E#|E9N  
private void fixUp(int k) { iZ]^JPU}  
while (k > 1) { "smU5 s,P  
int j = k >> 1; \4 b^*`d  
if (queue[j]>queue[k]) ^@x&n)nzP  
break; *$cx7yJ  
SortUtil.swap(queue,j,k); IR"C?  
k = j; TFHYB9vV  
} $}4ao2  
} pauO_'j_1p  
Da<`| l  
} OsOfo({I_  
3XY"s"  
} O=K0KOj  
z&9ljQ iF  
SortUtil: TTO8tT3[6}  
@CM5e!  
package org.rut.util.algorithm; ?jmL4V2-f  
GYtgw9 "Y  
import org.rut.util.algorithm.support.BubbleSort; $JOtUB{  
import org.rut.util.algorithm.support.HeapSort;  qbc=kP  
import org.rut.util.algorithm.support.ImprovedMergeSort; SOPair <r  
import org.rut.util.algorithm.support.ImprovedQuickSort; y=Eb->a){  
import org.rut.util.algorithm.support.InsertSort; [VX5r1-F  
import org.rut.util.algorithm.support.MergeSort; ,OrrGwp&  
import org.rut.util.algorithm.support.QuickSort; a,fcKe&B  
import org.rut.util.algorithm.support.SelectionSort; xm=Gt$>.o  
import org.rut.util.algorithm.support.ShellSort; +L=Xc^  
pa^_D~  
/** 0OlT^  
* @author treeroot y ~-v0/  
* @since 2006-2-2 IPTFx )]G  
* @version 1.0 X6}W]  
*/ `s69p'<;p  
public class SortUtil { ^$`mS&3/q  
public final static int INSERT = 1; tW!*W?  
public final static int BUBBLE = 2; ,dd1/zm  
public final static int SELECTION = 3; l_;6xkv4  
public final static int SHELL = 4; K20Hh7cVJ  
public final static int QUICK = 5; -~RGjx  
public final static int IMPROVED_QUICK = 6; Ugo!  
public final static int MERGE = 7; d %FLk=]  
public final static int IMPROVED_MERGE = 8; Cj}H'k<B  
public final static int HEAP = 9; 'pUJREb  
!Mgo~h"]#  
public static void sort(int[] data) { "3++S  
sort(data, IMPROVED_QUICK); d=D#cs;\  
} )zy ;!  
private static String[] name={ \ C$t  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /]0SF_dZ  
}; FzSL[S4i  
o&M.9V?~~  
private static Sort[] impl=new Sort[]{ { 2Ew^Li  
new InsertSort(), g9;s3qXiG  
new BubbleSort(), ' -9=>  
new SelectionSort(), qnQ".  
new ShellSort(), o\><e1P  
new QuickSort(), M/lC&F(  
new ImprovedQuickSort(), y$di_)&g  
new MergeSort(), v:Gy>&  
new ImprovedMergeSort(), ~xDu2 -5  
new HeapSort() 9Nna-}e?W  
}; C[jX;//Jiu  
X!ldL|Ua%  
public static String toString(int algorithm){ G; exH$y  
return name[algorithm-1]; D vU1+ y  
}  y<m[9FC}  
3G<4rH]  
public static void sort(int[] data, int algorithm) { ;; {K##^l  
impl[algorithm-1].sort(data); q7_Ttjn-DV  
} 0s{7=Ef  
2A";o E  
public static interface Sort { oclU)f.,  
public void sort(int[] data); X@:Y./  
} ,~1sZ`C  
zkqn>  
public static void swap(int[] data, int i, int j) { ? * ,  
int temp = data; Q@PDhISa  
data = data[j]; 3O Ks?i3A  
data[j] = temp; %,<Ki]F  
} Nmt~1.J  
} B/;'D7i|S  
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