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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。 E7WK (  
插入排序: [xbSYu,&  
1Rt33\1J0  
package org.rut.util.algorithm.support; a Fl;BhM  
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import org.rut.util.algorithm.SortUtil; Wt*cIZ  
/** p99 ]  
* @author treeroot 9d>-MX'  
* @since 2006-2-2 gl~ecc  
* @version 1.0 S:u:z=:r  
*/ EW}Bzh>b  
public class InsertSort implements SortUtil.Sort{ cA&9e<  
n#cC+>*>+  
/* (non-Javadoc) R1s`z|?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b\ X@gq  
*/  FK^p")i  
public void sort(int[] data) { d}Xr}  
int temp; EHSlK5bD,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jxP;>K7O  
} Oylf<&knF\  
} |e=,oV"  
} pXtl 6K%  
E}%B;"b/Tj  
} w3N[9w?1  
B=U 3  
冒泡排序: *HU &4E\a  
0q^>ZF-@  
package org.rut.util.algorithm.support; <3L5"77G 6  
?K1/ <PE+  
import org.rut.util.algorithm.SortUtil; q~rEq%tk  
.7^c@i[  
/** Jf@H/luW  
* @author treeroot n#mA/H;wV  
* @since 2006-2-2 =WyDp97@+  
* @version 1.0 sZ'nY o  
*/ H!c@klD  
public class BubbleSort implements SortUtil.Sort{ u+dLaVlLJ  
XYQ/^SI!:  
/* (non-Javadoc) wDw[RW3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N[?N5~jG  
*/ pD(j'[  
public void sort(int[] data) { Fzm*Pz3  
int temp; FOb0uj=(v  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8bxfj<O,  
if(data[j] SortUtil.swap(data,j,j-1); O8^A5,2@3>  
} ,yC-+VL  
} 9q)Kfz  
} N>Xo_-QCY  
} `34zkPB??  
j 'FVz&  
} ?}qttj  
W,D4.w$@'  
选择排序: Ig$(3p  
{ba q+  
package org.rut.util.algorithm.support; yZAS#ko}}  
FW.7'7G@n  
import org.rut.util.algorithm.SortUtil; z Eq GD2"  
?xA:@:l/  
/** XFg 9P}"  
* @author treeroot 'Jiw@t<o3`  
* @since 2006-2-2 9y6-/H ,  
* @version 1.0 ,y1PbA0m  
*/ `K*Q5n  
public class SelectionSort implements SortUtil.Sort { Qd)q([  
PYiU_  
/* md=TjMaY  
* (non-Javadoc) JELT ou  
* "Hya6k>j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IO wj>t  
*/ 9K.Vb1&  
public void sort(int[] data) { 1Vsz4P"O $  
int temp; A_V]yP  
for (int i = 0; i < data.length; i++) { H[m:0eF'5  
int lowIndex = i; 2uz W+D6J  
for (int j = data.length - 1; j > i; j--) { j~"Q3P;V  
if (data[j] < data[lowIndex]) { 'SO %)B  
lowIndex = j; :8I9\eet3  
} i1UiNJh86  
} Ha(c'\T (\  
SortUtil.swap(data,i,lowIndex); f< ia(d  
} 2$9odD<r  
} Ac96 [  
)(A]Ln4  
} tI]Q%S,  
RW|`nL  
Shell排序: l~1Oef#y  
&]g}u5J!=  
package org.rut.util.algorithm.support; -O1>|y2rU  
bNm#tmSt  
import org.rut.util.algorithm.SortUtil; ICpAt~3[M  
jGJLSEe_  
/** .RE:;<|w  
* @author treeroot Az9?Ra;U  
* @since 2006-2-2 6RG)` bu  
* @version 1.0 iyA'#bE-  
*/ VQ"hUX8  
public class ShellSort implements SortUtil.Sort{ :=}BN  
.@2m07*1  
/* (non-Javadoc) -] L6=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v;BV@E0}x  
*/ Ld\R:{M"  
public void sort(int[] data) { t=rEt>n~L  
for(int i=data.length/2;i>2;i/=2){ j-0z5|*KE  
for(int j=0;j insertSort(data,j,i); yu;+o3WlK  
} t!*?dr  
} kv]~'Srk  
insertSort(data,0,1); cT<1V!L4  
} %huRsQ %}  
?iPC*  
/** I*%-cA%l  
* @param data G(Lzf(  
* @param j ,f<?;z  
* @param i vmi+_]   
*/ nv GF2(;l  
private void insertSort(int[] data, int start, int inc) { 4 <9=5q]  
int temp; +?F[/?s5qz  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -1 FPkp  
} L E&RY[  
} W_||6LbZy  
} a!ud{Dx  
46$._h P  
} %WSo b@f8  
s&A} h  
快速排序: BD68$y  
@"hb) 8ng  
package org.rut.util.algorithm.support; nePfu G]Q  
N< |@ymi  
import org.rut.util.algorithm.SortUtil; kEJj=wx  
.GV;+8HzS  
/** 5G::wuxk  
* @author treeroot S-P/+K6  
* @since 2006-2-2 e_#._Pi  
* @version 1.0 5}:-h>  
*/ ?u-|>N>  
public class QuickSort implements SortUtil.Sort{ fo5iJz"Z  
hq%?=2'9?  
/* (non-Javadoc) o%v0h~tn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >,TUZ  
*/ V:qSy#e  
public void sort(int[] data) { vBRQp&YwX  
quickSort(data,0,data.length-1); J3,fk)  
} !i{aMxUP  
private void quickSort(int[] data,int i,int j){ |h-QP#]/  
int pivotIndex=(i+j)/2; 0Z~p%C<LW  
file://swap Z?}dq-Vh&  
SortUtil.swap(data,pivotIndex,j); 0vFD3}~>  
FQm`~rA~zt  
int k=partition(data,i-1,j,data[j]); >go,K{cK6  
SortUtil.swap(data,k,j); <L`KzaA  
if((k-i)>1) quickSort(data,i,k-1); `2'#! -  
if((j-k)>1) quickSort(data,k+1,j); `rgn<I"  
RzBF~2 >i  
} 9}l33T4T  
/** .>CPRVuVI  
* @param data H!?c\7adX  
* @param i ,.rs(5.z8/  
* @param j !HrKXy 0{  
* @return l9}3XI.=  
*/ }&/o'w2wY  
private int partition(int[] data, int l, int r,int pivot) { t5[ #x4 p  
do{ ;fsZ7k4]do  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); GO8GJ;B-U  
SortUtil.swap(data,l,r); `JOOnTenQ  
} yXz*5W_0D  
while(l SortUtil.swap(data,l,r); P=7zs;k  
return l; @$lG@I,[  
} ?>hPO73{  
*#E F sUw  
} 6;u$&&c(  
`Zf^E >)  
改进后的快速排序: ~$ng^D  
J]v%q,"  
package org.rut.util.algorithm.support; O]lSWEe  
~5_Ad\n9  
import org.rut.util.algorithm.SortUtil; @HQ`~C#Z'  
)#P; x "  
/** 1>*#%R?W  
* @author treeroot  9XP o3;  
* @since 2006-2-2 a&tSj35*6  
* @version 1.0 "7!;KHc  
*/ 5Y.vJz  
public class ImprovedQuickSort implements SortUtil.Sort { V@Rrn <l  
E^QlJ8  
private static int MAX_STACK_SIZE=4096; "^4_@ oo  
private static int THRESHOLD=10; t\Nq R  
/* (non-Javadoc) ?kWC}k{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'h/CoTk@,  
*/ a d.3A{  
public void sort(int[] data) { G"\`r* O  
int[] stack=new int[MAX_STACK_SIZE]; I Y2)?"A  
4xk|F'6K  
int top=-1; |kw)KEi}H  
int pivot; U F?H>Y&  
int pivotIndex,l,r; U@gn;@\  
d\p,2  
stack[++top]=0; #N#'5w-G  
stack[++top]=data.length-1; FuVnk~gq  
v\!Be[ ?  
while(top>0){ Y]NSN-t  
int j=stack[top--]; \]&#%6|V  
int i=stack[top--]; OZx W?wnd  
)>.&N[v  
pivotIndex=(i+j)/2; sArhZ[H  
pivot=data[pivotIndex]; }R1< 0~g  
s>0't  
SortUtil.swap(data,pivotIndex,j); T,]7ICF#  
j/>$,   
file://partition $>GgB`  
l=i-1; p;._HJ(  
r=j; |(pRaiJ  
do{ %<E$,w>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e<=cdze  
SortUtil.swap(data,l,r); [onGNq?#  
} 7B b9 t  
while(l SortUtil.swap(data,l,r); v5By:z  
SortUtil.swap(data,l,j); Av"R[)  
*RXbc~ H  
if((l-i)>THRESHOLD){ L!rw[x  
stack[++top]=i; vY%d   
stack[++top]=l-1; 9{-EJ)  
} vWRju*Z&  
if((j-l)>THRESHOLD){ WKT4D}{1  
stack[++top]=l+1; `wus\&!W  
stack[++top]=j; 3D` YZ#M  
} [21 =5S  
3|1i lP  
} w9NHk~LHKF  
file://new InsertSort().sort(data); U'R)x";=  
insertSort(data); Yj)#k)x  
} 6,d@p  
/** 2Tfz=7h$  
* @param data *$p2*%7Ne  
*/ y$@ZN~8  
private void insertSort(int[] data) { u:[vaBh91  
int temp; V\u>"3BQw  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D$bIo "  
} F_;vO%}  
} %%NlTE8*  
} -sw  .  
/wP@2ADB  
} L%Ow#.[C2  
W.dt:_  
归并排序: C!Rs^/  
{P{bOe  
package org.rut.util.algorithm.support; V>R8GSx  
--HF8_8;'  
import org.rut.util.algorithm.SortUtil; c.,2GwW  
p$h4u_  
/** _h X]%  
* @author treeroot ;cPy1  
* @since 2006-2-2 <(-3_s6-  
* @version 1.0 !OA]s%u  
*/ }&n<uUDH  
public class MergeSort implements SortUtil.Sort{ U7oo$gW%|T  
"Jt.lL ]5  
/* (non-Javadoc) 4zJtOK?r"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y>72{  
*/ e '2F#  
public void sort(int[] data) { T{Sb^-H#X  
int[] temp=new int[data.length]; zY|t0H  
mergeSort(data,temp,0,data.length-1); GG@ md_  
} )=AHf?hn  
b!sRk@LGZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ :lB=L r)  
int mid=(l+r)/2; O)ME"@r@:  
if(l==r) return ; 'h^0HE\~p  
mergeSort(data,temp,l,mid); MxGu>r  
mergeSort(data,temp,mid+1,r); }z\_;\7  
for(int i=l;i<=r;i++){ KnsT\>[K  
temp=data; qW!]co  
} s<oNE)xe  
int i1=l; 1_\;- !t  
int i2=mid+1; !1q 9+e  
for(int cur=l;cur<=r;cur++){ % !du,2  
if(i1==mid+1) 6ek;8dL  
data[cur]=temp[i2++]; e'0{?B  
else if(i2>r) Md0 s K  
data[cur]=temp[i1++]; AgFVv5  
else if(temp[i1] data[cur]=temp[i1++]; -PS#Z0>  
else  ))&;}2{  
data[cur]=temp[i2++]; PI`jExL  
} q o\?o    
} _io+YzS  
[k6nW:C  
} [ { bV4  
ADpmvW f?  
改进后的归并排序: =$nB/K,8AX  
.G+Pe'4a  
package org.rut.util.algorithm.support; M@?xa/E64  
M#~Cc~oT  
import org.rut.util.algorithm.SortUtil; w:?oTuw  
:,J}z~I,lB  
/** XLL/4)  
* @author treeroot |!"2fI  
* @since 2006-2-2 Iz ;G*W18  
* @version 1.0 =li|  
*/ 'g$(QvGF 9  
public class ImprovedMergeSort implements SortUtil.Sort { 4\6N~P86  
iVd.f A  
private static final int THRESHOLD = 10; s VJ!FC  
*e-A6S h  
/* :cGt#d6  
* (non-Javadoc) {K9/H qH  
* _>9.v%5cs(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ti'}MC+0  
*/ co9 .wB@  
public void sort(int[] data) { ,(;lIP  
int[] temp=new int[data.length]; 3:8{"md@2  
mergeSort(data,temp,0,data.length-1); #Sa27$&.>  
} P&b19K'  
zxf"87se  
private void mergeSort(int[] data, int[] temp, int l, int r) { f-5:wM&  
int i, j, k; VY)9|JJCO  
int mid = (l + r) / 2; z}{afEb  
if (l == r) #{=;NuP  
return; 5g9; +}X;  
if ((mid - l) >= THRESHOLD) DSt]{fl`P  
mergeSort(data, temp, l, mid); nzmDA6d  
else  jcI&w#re  
insertSort(data, l, mid - l + 1); YhY:~  
if ((r - mid) > THRESHOLD) ds&e|VSH;  
mergeSort(data, temp, mid + 1, r); ]ut5S>,"  
else `&-Mi[1  
insertSort(data, mid + 1, r - mid); 8Goh4T H  
3"G>>nC&  
for (i = l; i <= mid; i++) { 8HRmQ  
temp = data; e0J6Ae4V[  
} z,VD=Hnz  
for (j = 1; j <= r - mid; j++) { jK' N((Hz  
temp[r - j + 1] = data[j + mid]; \mV'mZ9>  
} 4E+hRKuo,  
int a = temp[l]; Op>%?W8/UF  
int b = temp[r]; *P#WDXRwd  
for (i = l, j = r, k = l; k <= r; k++) { ?}m']4p  
if (a < b) { Q4*fc^?u  
data[k] = temp[i++]; jq+A-T}@  
a = temp; ,:`ND28V7  
} else { dlG=Vq&Y  
data[k] = temp[j--]; j S]><rm  
b = temp[j]; =IUUeFv +r  
} _>v<(7  
} fgBM_c&9T  
} 1&P<  
cKn`/\.H  
/** i| ZceX/  
* @param data kWNV%RlSx  
* @param l ;>AL`M+  
* @param i ONCnVjZ  
*/ YSj+\Z$(  
private void insertSort(int[] data, int start, int len) { h68]=KyK  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -CRQ&#p1]  
} gq"gUaz  
} Y;)dct  
} Dc+'<"  
} ixV0|P8,c  
r YF #^  
堆排序: }=|!:kiE  
qY >{cjo  
package org.rut.util.algorithm.support; !H2QjW  
+Y V|ij  
import org.rut.util.algorithm.SortUtil; yB3;  
l/Vo-#  
/** @]![o %  
* @author treeroot bcAvM;  
* @since 2006-2-2 l27\diKPJ  
* @version 1.0 TuW/N L|  
*/ 6: ]*c[7  
public class HeapSort implements SortUtil.Sort{ 06Gt&_Q  
JKX_q&bUw  
/* (non-Javadoc) ;r6jx"i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t w(JZDc  
*/ [2dn\z28  
public void sort(int[] data) { (E,Yo  
MaxHeap h=new MaxHeap(); Raw)9tUt  
h.init(data); ~`D|IWMDq  
for(int i=0;i h.remove(); Z(ZiFPx2Z  
System.arraycopy(h.queue,1,data,0,data.length); ?]rPRV  
} VOr1  
PC qZNBN  
private static class MaxHeap{ (D 9Su^:1  
7Su#Je]  
void init(int[] data){ *A~ G_0B  
this.queue=new int[data.length+1]; ;3 F"TH  
for(int i=0;i queue[++size]=data; >+mD$:L  
fixUp(size); )NO<s0?&  
} F|& {Rt  
} k2xHH$+{#=  
m] W5+  
private int size=0; 9<vWcq*4  
dV Q-k  
private int[] queue; RID]pek  
fl;s9:<  
public int get() { jA(>sz  
return queue[1]; 2jbIW*  
} $46{<4.  
-!)xQvagD.  
public void remove() { x)UwV  
SortUtil.swap(queue,1,size--); !J =sk4T  
fixDown(1); )I\=BPo|B  
} a,o_`s<  
file://fixdown {,cCEXag%  
private void fixDown(int k) { k/03ZxC-  
int j; jt@SZI`  
while ((j = k << 1) <= size) { < F )_!0C  
if (j < size %26amp;%26amp; queue[j] j++; 0A:n0[V:]  
if (queue[k]>queue[j]) file://不用交换 fGv#s X  
break; zFQ&5@43  
SortUtil.swap(queue,j,k); &wU'p-V  
k = j; $o+5/c?|  
} !;Jmg  
} BI:k#jO!  
private void fixUp(int k) { *0_yT$  
while (k > 1) { w0ZLcND{  
int j = k >> 1; 7?v#'Ie s  
if (queue[j]>queue[k]) 2qi'g:qe  
break; /cK%n4l.y  
SortUtil.swap(queue,j,k); IG?'zppjd6  
k = j; m'-|{c  
} xvNo(>  
} f/kI| Z  
\*\R1_+  
}  h C=:q  
9]'($:LF08  
} >\ u<&>i  
}YOL"<,:o  
SortUtil: za'6Y*CGgX  
hCYQGx0  
package org.rut.util.algorithm; E(Rh#+]Y5  
=&dW(uyzY  
import org.rut.util.algorithm.support.BubbleSort; 7DKz;o  
import org.rut.util.algorithm.support.HeapSort; @=5qT]%U3J  
import org.rut.util.algorithm.support.ImprovedMergeSort; aS}1Q?cU  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?4CNkk=v  
import org.rut.util.algorithm.support.InsertSort; Cv)/7vyB8  
import org.rut.util.algorithm.support.MergeSort; IkzTJ%>  
import org.rut.util.algorithm.support.QuickSort; NA$zd(  
import org.rut.util.algorithm.support.SelectionSort; 0lM{l?  
import org.rut.util.algorithm.support.ShellSort; jxgj,h"}9`  
GFk1/ F  
/** zciCcrJ  
* @author treeroot .bD_R7Bi6  
* @since 2006-2-2 U Q@7n1  
* @version 1.0 zu2HH<E  
*/ Q/I)V2a1i  
public class SortUtil { >\<*4J$PZ  
public final static int INSERT = 1; }]UB;id'  
public final static int BUBBLE = 2; "Dy'Kd%,%/  
public final static int SELECTION = 3; Z.i{i^/#(  
public final static int SHELL = 4; %b?$@H-Re  
public final static int QUICK = 5; ^")F7`PF  
public final static int IMPROVED_QUICK = 6; r,(e t  
public final static int MERGE = 7; nsb4S {  
public final static int IMPROVED_MERGE = 8; I1U7.CT  
public final static int HEAP = 9; 6 fz}  
Q 6C-4ja  
public static void sort(int[] data) { z5Qs @dG  
sort(data, IMPROVED_QUICK); XA_FOw!cX  
} +~nzii3  
private static String[] name={ _U| 7'^|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Xj+q~4{|vt  
}; wyxGe<1  
:`vP}I ^  
private static Sort[] impl=new Sort[]{  6qo^2  
new InsertSort(), >cL{Ya}Rz  
new BubbleSort(), uk`8X`'  
new SelectionSort(), qIwV q!=  
new ShellSort(), fR-C0"c  
new QuickSort(), W</n=D<,I  
new ImprovedQuickSort(), t j Vh^  
new MergeSort(), Vy G4(X va  
new ImprovedMergeSort(), ^4v*W;Q  
new HeapSort() T_<BVM  
}; 1+y"i<3)  
Zt3}Z4d  
public static String toString(int algorithm){ ?lCd{14Mkh  
return name[algorithm-1]; N?4q  
} RAs0]K  
io4A>>W==/  
public static void sort(int[] data, int algorithm) { ALd;$fd qf  
impl[algorithm-1].sort(data); Fs/?  
} ^a9 oKI9n  
^ons:$0h  
public static interface Sort { w8~K/>!f  
public void sort(int[] data); j%Y\A~DV  
} ;SKh   
s]B"qF A  
public static void swap(int[] data, int i, int j) { *j)M]  
int temp = data; -dTLunv  
data = data[j]; ET^|z  
data[j] = temp; \[wCp*;1}  
} mZ0J!QYk  
} pF=g||gS  
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