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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。 W=EO=}l#  
插入排序: uBE,z>/,;  
<Ab:yD`K!  
package org.rut.util.algorithm.support; (Z"Xp{u  
~$\j$/A8/  
import org.rut.util.algorithm.SortUtil; 1UM]$$:i  
/** #8z\i2I  
* @author treeroot d}o1 j  
* @since 2006-2-2 `f'q/  
* @version 1.0 fd,~Yj$R?  
*/ oM7^h3R  
public class InsertSort implements SortUtil.Sort{ lwg.'<  
;W+-x] O  
/* (non-Javadoc) Z],"<[E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }\0"gM  
*/ b/K&8C,c  
public void sort(int[] data) { ai`:HhE  
int temp; =!CuCV7$1O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yX~[yH+Pn  
} m~U{ V9;*  
} F>b6fUtR  
} (&*F`\  
'9/kDkt!  
} ^n2w6U0  
Qx,G3m[}  
冒泡排序: .4Ny4CMHZ  
o7T|w~F~R  
package org.rut.util.algorithm.support; O(~Vvoq  
$Tur"_`I;  
import org.rut.util.algorithm.SortUtil; .E}});l  
|"-,C}O  
/** UKJY.W!w4  
* @author treeroot Q]7Q  
* @since 2006-2-2 \fKE~61  
* @version 1.0 Ur-^X(nL  
*/ ZkIQ-;wx  
public class BubbleSort implements SortUtil.Sort{ u=l(W(9=  
_[ phs06A  
/* (non-Javadoc) OX`n`+^D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jF;4 8g@^  
*/ d$TW](Bby  
public void sort(int[] data) { $F-XXBp  
int temp; PW`Tuj  
for(int i=0;i for(int j=data.length-1;j>i;j--){ H\k5B_3OU  
if(data[j] SortUtil.swap(data,j,j-1); >eTlew<5  
} y%,BDyK  
} $~YuS_sYg  
} c~'kW`sNV  
} lX4p'R-h  
~ 9;GD4  
} % *G)*n  
lewDR"0Kx  
选择排序: ( 7?%Hg  
9>#|~P&FE  
package org.rut.util.algorithm.support; %KA/  
_)l %-*Z7p  
import org.rut.util.algorithm.SortUtil; biG9?  
84[^#ke  
/** 4r. W:}4:  
* @author treeroot ;9PM?Iy[  
* @since 2006-2-2 vRq xZN  
* @version 1.0 0c5_L6_z  
*/ V3oAZ34)  
public class SelectionSort implements SortUtil.Sort { W*<]`U_.  
jyGVbno`  
/* 2 QmUg  
* (non-Javadoc) yx2.7h3  
* 4B]61|A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y2X1!Em>B  
*/ S>,I&`yi  
public void sort(int[] data) { &FrB6 y  
int temp; K8J2eV\  
for (int i = 0; i < data.length; i++) { ~&}O|B()  
int lowIndex = i; 2f!oA~|2  
for (int j = data.length - 1; j > i; j--) { %&Cl@6  
if (data[j] < data[lowIndex]) { QVW6SY  
lowIndex = j; 4iz&"~&1  
} ]K7  64}  
} V)2_T!e%*  
SortUtil.swap(data,i,lowIndex); =b7&(x  
}  z\tJ~  
} B0i}Y-Z  
T]|O/  
} gn"&/M9E  
17cW8\  
Shell排序: 'u[o`31.  
sPg6eAd~?  
package org.rut.util.algorithm.support; 5gD)2Q6  
Y/0O9}hf  
import org.rut.util.algorithm.SortUtil; .dCP8|  
u =kSs  
/** 6Qb)Uq3}]  
* @author treeroot  W6O.E  
* @since 2006-2-2 ikhX5 &e  
* @version 1.0 kkBU<L2  
*/ 2Nkn C>9(\  
public class ShellSort implements SortUtil.Sort{ HzV+g/8>A  
y.:-  
/* (non-Javadoc) $-]setdY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JJ?ri,  
*/ d&bc>Vt  
public void sort(int[] data) { k_n{Mss'9  
for(int i=data.length/2;i>2;i/=2){ n ;5?^Un%  
for(int j=0;j insertSort(data,j,i); LtztjAm.  
} vB5iG|b}  
} +&,\ J9'B  
insertSort(data,0,1); t4@g;U?o  
} 6\Vu#r  
j dhml%pAd  
/** f#kevf9zc  
* @param data mzB#O;3=  
* @param j p qN[G=0  
* @param i k6L373e#Q  
*/ )[sO5X7'^  
private void insertSort(int[] data, int start, int inc) { {H; |G0tR  
int temp; gVU\^KN]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); pMp9 O/u%  
} 3Z:!o$  
} htYrv5q=M  
} a<'$`z|s  
-0SuREn  
} W 'a~pB1I  
4sBoD=e  
快速排序: 0Eu$-)  
f_h"gZWV  
package org.rut.util.algorithm.support; Z 034wn\N  
]8>UII,US  
import org.rut.util.algorithm.SortUtil; 'uAC oME@  
hav?mnVJ  
/** 0^.4eX:E_  
* @author treeroot +N$7=oGC  
* @since 2006-2-2 UT<b v}(J  
* @version 1.0 Qz)8eIO:  
*/ 0D3+R1>_D  
public class QuickSort implements SortUtil.Sort{ \G=R hx f  
o>;0NF| }  
/* (non-Javadoc) (l8r>V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [RFK-E  
*/ ?VZXJO{^  
public void sort(int[] data) { qb> r\bc  
quickSort(data,0,data.length-1); T 0v@mXBQ  
} ilp;@O6  
private void quickSort(int[] data,int i,int j){ 60%~+oHi~  
int pivotIndex=(i+j)/2; Usf"K*A  
file://swap PnIvk]"Ab  
SortUtil.swap(data,pivotIndex,j); #D/ }u./  
g~hk-nXL.  
int k=partition(data,i-1,j,data[j]); 8+|V!q   
SortUtil.swap(data,k,j); p5;,/ |Ft  
if((k-i)>1) quickSort(data,i,k-1); *DC Nu{6  
if((j-k)>1) quickSort(data,k+1,j); i? _D]BY4  
x]><}! \<&  
} zg Y*|{4Sl  
/** 0rJ\e  
* @param data =R;1vUio  
* @param i ,cy/fW  
* @param j _Kl{50}]  
* @return QjjJtKz  
*/ pL}j ZTo  
private int partition(int[] data, int l, int r,int pivot) { FHNuMdFn  
do{ Rc:cVK  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o*wC{VP_  
SortUtil.swap(data,l,r); ";?C4%L  
} EM 54  
while(l SortUtil.swap(data,l,r); v8[ek@  
return l; b|ksMB>)  
} %Di 7u- x  
ds$\vSd  
} :KV,:13`D  
AV[PQI  
改进后的快速排序: JIbzh?$aD  
S,Wl)\  
package org.rut.util.algorithm.support; b8{h[YJL2  
b!5tFX;J  
import org.rut.util.algorithm.SortUtil; t:"=]zUU  
{`Fx~w;i  
/** 18p3  
* @author treeroot U??f<  
* @since 2006-2-2 4`!  
* @version 1.0 u5XU`!  
*/ OU.9 #|qU  
public class ImprovedQuickSort implements SortUtil.Sort { 1|~#028  
Q0q)n=i }]  
private static int MAX_STACK_SIZE=4096; ??zABV  
private static int THRESHOLD=10; )-9w3W1r  
/* (non-Javadoc) Pvg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ro'4/{}+  
*/ ^I'Lw  
public void sort(int[] data) { !w#ru?L{  
int[] stack=new int[MAX_STACK_SIZE]; ;sck+FP7w  
uWR,6\_jY  
int top=-1; HDSA]{:sl  
int pivot; z@%/r~?|  
int pivotIndex,l,r; J!A/r<  
34m']n  
stack[++top]=0; qSC~^N`  
stack[++top]=data.length-1; f}lT|.)?VD  
DA4edFAuE  
while(top>0){ 'x45E.wYw  
int j=stack[top--]; U8WHE=Kk\h  
int i=stack[top--]; qD$GKN.  
t.>te'DK/  
pivotIndex=(i+j)/2; ?`T6CRZhr  
pivot=data[pivotIndex]; )Vg{Y [!  
OHtgn  
SortUtil.swap(data,pivotIndex,j); d)hzi  
6Y>,e;R  
file://partition y\|-O<8O  
l=i-1; =hugnX<9  
r=j; fV A=<:  
do{ cFI7}#,5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^`TKvcgIc  
SortUtil.swap(data,l,r); :@QK}qFP  
} 4iYKW2a  
while(l SortUtil.swap(data,l,r); fbHWBb  
SortUtil.swap(data,l,j); ]U#[\ Z  
"S B%02  
if((l-i)>THRESHOLD){ /]k ,,&  
stack[++top]=i; *2"bG1`  
stack[++top]=l-1; gf3u0' $  
} <(#xOe  
if((j-l)>THRESHOLD){ N'eQ>2>O@  
stack[++top]=l+1; oA!5dpNhU  
stack[++top]=j; - 5o<Q'(  
} k}I5x1>&  
mI?* Z%>g  
} 7}#*3*]  
file://new InsertSort().sort(data); '.%iPMM  
insertSort(data); W>q*.9}Y"  
} 5I)~4.U|,m  
/** ~ F?G5cN5  
* @param data t-eKruj+  
*/ ?O<`h~'$+  
private void insertSort(int[] data) { 9*-pden l  
int temp; >Bh)7>`3c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); + 4V1>e+  
} =qV4Sje|q  
} eN<>#: `  
} 7,W]zKH  
^(dGO)/  
} E'&OOEMN-  
)tN?: l  
归并排序: qEK4I}Q-=  
KlVi4.]  
package org.rut.util.algorithm.support; >YJ8u{Z{o  
]HJ{dcF  
import org.rut.util.algorithm.SortUtil; S{^6iR  
0$xK   
/** Xb(CH#*{z  
* @author treeroot w&wA >q>&  
* @since 2006-2-2 {(m+M  
* @version 1.0 b!4N)t>gl  
*/ ;PfeP ;z  
public class MergeSort implements SortUtil.Sort{ R "/xne  
2A*X Hvwb  
/* (non-Javadoc) )Y&MIJ7>@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]^yV`Z8  
*/ GZ/pz+)i&  
public void sort(int[] data) { + AcKB82  
int[] temp=new int[data.length]; ?o(ZTlT  
mergeSort(data,temp,0,data.length-1); Aj8l%'h[  
} njy~   
};|!Lhl+  
private void mergeSort(int[] data,int[] temp,int l,int r){ *<`7|BH3  
int mid=(l+r)/2; r,`Z.A  
if(l==r) return ; y'J:?!S,Yu  
mergeSort(data,temp,l,mid); X[GIOPDx  
mergeSort(data,temp,mid+1,r); VZT6;1TD$8  
for(int i=l;i<=r;i++){ 1&X}1  
temp=data; h.4qlx|  
} ysSjc  
int i1=l; qy7hkq.uX  
int i2=mid+1; fbh6Ls/  
for(int cur=l;cur<=r;cur++){ ;=5@h!@R  
if(i1==mid+1) Qa,NGP.  
data[cur]=temp[i2++]; itqQ)\W  
else if(i2>r) GN:Ru|n  
data[cur]=temp[i1++]; s jL*I  
else if(temp[i1] data[cur]=temp[i1++]; S+.21,  
else ri/t(m^{W  
data[cur]=temp[i2++]; yPf?"W  
} ! 6p>P4TT  
} MuDFdbtR  
Q  `e~MD  
} >:w?qEaE  
y;,=a jrF  
改进后的归并排序: Ez zTJ>  
O{lIs_1.Z  
package org.rut.util.algorithm.support; ~/^y.SsWM  
mV6#!_"  
import org.rut.util.algorithm.SortUtil; a(PjcQ4dY  
eP V-yy  
/** G*kE~s9R  
* @author treeroot 07.nq;/R  
* @since 2006-2-2 lTa1pp Zw  
* @version 1.0 u/z,92mmS  
*/ 8ku? W  
public class ImprovedMergeSort implements SortUtil.Sort { d4jVdOq2  
Ivz+Jj w  
private static final int THRESHOLD = 10; ((Vj]I% ;  
4^ c!_K&&  
/* x1|Da$2  
* (non-Javadoc) I["F+kt^^  
* *e(:["v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T&o,I  
*/ NY4!TOp  
public void sort(int[] data) { 4fu'QZ(}  
int[] temp=new int[data.length];  5Waw?1GL  
mergeSort(data,temp,0,data.length-1); Wr]O  
} fm3(70F\  
' oBo|  
private void mergeSort(int[] data, int[] temp, int l, int r) { l'|E,N>X  
int i, j, k; \BN|?r$a  
int mid = (l + r) / 2; wY' "ab  
if (l == r) M%7`8KQ  
return; $-m@KB  
if ((mid - l) >= THRESHOLD) 9uuta4&uI  
mergeSort(data, temp, l, mid); i?ZA x4D  
else oR-O~_) U  
insertSort(data, l, mid - l + 1); Z1VC5* K  
if ((r - mid) > THRESHOLD) " <<A  
mergeSort(data, temp, mid + 1, r); 7sj<|g<h(_  
else U5|B9%:&  
insertSort(data, mid + 1, r - mid); G1kDM.L  
`-~`<#E[  
for (i = l; i <= mid; i++) { x}v1X`6b  
temp = data; &J\B\`  
} $8jaapNm@  
for (j = 1; j <= r - mid; j++) { (F/HU"C  
temp[r - j + 1] = data[j + mid]; #]?tY }~  
} EC<5M5Lc  
int a = temp[l]; $kD7y5  
int b = temp[r]; -<8B,  
for (i = l, j = r, k = l; k <= r; k++) { ]PeLcB  
if (a < b) { ^&C&~}Zv  
data[k] = temp[i++]; uK"^*NEC';  
a = temp; -oU@D  
} else { Hr(6TLNw  
data[k] = temp[j--]; D0f*eSXE{  
b = temp[j]; Y [4vRzc  
} 4S'[\ZJO  
} E3y6c)<  
} cZ^wQ5=  
5(423"(y  
/** Ud$Q0m&  
* @param data ])eOa%  
* @param l U9x4j_.q  
* @param i pfR"s:#  
*/ +eU`H[iu  
private void insertSort(int[] data, int start, int len) { ?2/uSG|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w- r_H!-  
} Ft3I>=f{  
} BlL|s=dlQV  
} w2k<)3 g~  
} -<xyC8 $^$  
:MK=h;5Z  
堆排序: B#1:Y;Z  
"<qEXX  
package org.rut.util.algorithm.support; hXNH"0VCV  
RV}GK L>gn  
import org.rut.util.algorithm.SortUtil; ;{Xy`{Cg!  
F{;; :  
/** Ky *DfQA  
* @author treeroot 4ffU;6~l'  
* @since 2006-2-2 ~xw5\Y^  
* @version 1.0 ,`y yR:F  
*/ 4b]_ #7Qm  
public class HeapSort implements SortUtil.Sort{ I|Z/`9T  
Np$z%ewK.  
/* (non-Javadoc) ^,+nef?=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6nc0=~='$  
*/ FW_G\W.  
public void sort(int[] data) { Vz'HM$  
MaxHeap h=new MaxHeap(); F,Q?s9s  
h.init(data); R'L?Xn}3  
for(int i=0;i h.remove(); {H+?z<BF<  
System.arraycopy(h.queue,1,data,0,data.length); J,RDTXqn  
} !I~C0u  
n3'dLJH|  
private static class MaxHeap{ lw s(/a*c  
sllzno2bU  
void init(int[] data){ ]dq5hkjpU  
this.queue=new int[data.length+1]; =rEA:Q`~w  
for(int i=0;i queue[++size]=data; @^'$r&M  
fixUp(size); wDMjk2 YN  
} Ssw&'B|o  
} #\LZ;&T'N  
Nl { 7  
private int size=0; V'j@K!)~xR  
JIMWMk;ot  
private int[] queue; o*-9J2V=J  
-3` "E%9  
public int get() { N};t<Xev  
return queue[1]; a&C.=  
} 7lwTZ*rnY  
M'DWu|dIBA  
public void remove() { '#A:.P  
SortUtil.swap(queue,1,size--); Xk?R mU6  
fixDown(1); e{0L%%2K  
} x~EKGoz3  
file://fixdown tfA}`*$s  
private void fixDown(int k) { %kq ^]S2O  
int j; yc[(lq.^n  
while ((j = k << 1) <= size) { 8bt53ta  
if (j < size %26amp;%26amp; queue[j] j++; 9#Bx]wy  
if (queue[k]>queue[j]) file://不用交换 ;gUXvx~~r  
break; Pxqiv9D<R  
SortUtil.swap(queue,j,k); =-Nsc1&  
k = j; ;\x~'@  
} HxZ.OZbR  
} ;SKcbws  
private void fixUp(int k) { LQqfi ~  
while (k > 1) { q? 9GrwL8F  
int j = k >> 1; ] IS;\~  
if (queue[j]>queue[k]) 1Cv#nhmp  
break; 84^[/d;!  
SortUtil.swap(queue,j,k); E M Q4yK  
k = j; dMV=jJ%Y  
} CU$)QH{  
} #9\THfb  
q$T8bh,2  
} 4sIX O  
Gm A!Mo  
} i4<BDX5  
*T1~)z}j<  
SortUtil: =Dk7RKoHF  
@\jQoaLT$_  
package org.rut.util.algorithm; I+" lrU  
Xk,>l6 vc  
import org.rut.util.algorithm.support.BubbleSort; ZdH1nX(Yh3  
import org.rut.util.algorithm.support.HeapSort; oRq3 pO}f  
import org.rut.util.algorithm.support.ImprovedMergeSort; .,M;huRg  
import org.rut.util.algorithm.support.ImprovedQuickSort; !y. $J<  
import org.rut.util.algorithm.support.InsertSort; \ I:.<2i  
import org.rut.util.algorithm.support.MergeSort; aMJ;bQD  
import org.rut.util.algorithm.support.QuickSort; W#{la`#Bu  
import org.rut.util.algorithm.support.SelectionSort; h/K@IA d  
import org.rut.util.algorithm.support.ShellSort; .$0Pr%0pWI  
C ) ?uE'  
/** 5g>wV  
* @author treeroot CTp!di|  
* @since 2006-2-2 7$7n71o  
* @version 1.0 H\#:,s{1  
*/ ")%r}:0  
public class SortUtil { [!~}S  
public final static int INSERT = 1; q@ZlJ3%l,  
public final static int BUBBLE = 2; |')-VhLLK  
public final static int SELECTION = 3; cDeZMsV  
public final static int SHELL = 4; utH%y\NMF|  
public final static int QUICK = 5; ,E}$[mHyjz  
public final static int IMPROVED_QUICK = 6; [l*;E f,  
public final static int MERGE = 7; mU@xc N  
public final static int IMPROVED_MERGE = 8; 8TPN#"  
public final static int HEAP = 9; 3=- })X ;  
!re1EL  
public static void sort(int[] data) { `!i-#~n  
sort(data, IMPROVED_QUICK); /:p8I6;  
} :1;Q(9:v  
private static String[] name={ %K1")s  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" u7].}60.'  
}; z"UPyW1?  
1bSD,;$sQ  
private static Sort[] impl=new Sort[]{ `R+,1"5=  
new InsertSort(), [@G`Afaf  
new BubbleSort(), " U8S81'  
new SelectionSort(), ^npJUa  
new ShellSort(), }C,O   
new QuickSort(), w4%AJmt  
new ImprovedQuickSort(), {Uq:Xw   
new MergeSort(), H;S%Y`V  
new ImprovedMergeSort(), |=5/Rax^  
new HeapSort() 0+`Pg  
}; hO( RZ '{  
H~o <AmE0!  
public static String toString(int algorithm){ |" 7 Y52d  
return name[algorithm-1]; .'d2J>~N  
} Yb:pAzw6  
!9 f4R/ ?  
public static void sort(int[] data, int algorithm) { c-8!#~M(  
impl[algorithm-1].sort(data); z<&m*0WYA  
} Lh ap4:  
/!T> b:0  
public static interface Sort { R#eg^7HfX  
public void sort(int[] data); F,T~\gO5,  
} &HDP!SLS  
[BDGR B7d"  
public static void swap(int[] data, int i, int j) { M_|> kp  
int temp = data; !w2gGy:I>  
data = data[j]; f/y`  
data[j] = temp; DWm SC}{.  
} n:4uA`Vg  
} Z cpmquf8L  
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