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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<n  
插入排序: xBi' X  
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package org.rut.util.algorithm.support; 54R#W:t  
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import org.rut.util.algorithm.SortUtil; MC.) 2B7  
/** nwRc%C``UK  
* @author treeroot V7fq4O^:  
* @since 2006-2-2 "Nbq#w\  
* @version 1.0 #-i>;Rt  
*/ UIN<2F_  
public class InsertSort implements SortUtil.Sort{ ]{mPh\  
!/i{l  
/* (non-Javadoc) 9c,'k#k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YvyNHW&  
*/ mQ 26K~  
public void sort(int[] data) { =Qj{T  
int temp; +V046goX W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9} M?P  
} ?:I*8Fj  
} hVAn>_(  
} NzOx0WLF  
=BAW[%1b  
} ryUQU^v  
,,Q O^j]4~  
冒泡排序: peuZ&yK+"  
'UX!*5k<:  
package org.rut.util.algorithm.support; [H^z-6x:0  
9oR@U W1  
import org.rut.util.algorithm.SortUtil; ;1O_M9  
tKx~1-  
/** {~"/Y@&]R  
* @author treeroot q"sed]  
* @since 2006-2-2 ]e>w }L(gV  
* @version 1.0 %JD,$p Ps  
*/ dkBIx$t  
public class BubbleSort implements SortUtil.Sort{ 4,gK[ dc  
H-*yh!  
/* (non-Javadoc) *>'V1b4}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P& -Qc  
*/ <~'"<HwtK  
public void sort(int[] data) { `FDiX7M  
int temp; '+!1Y o'G  
for(int i=0;i for(int j=data.length-1;j>i;j--){ suiS&$-E  
if(data[j] SortUtil.swap(data,j,j-1); /dQl)tL  
} sF?TmBQ*  
} 6@ IXqKz  
} BmMGx8P  
} 6x[}g  
L<-_1!wh  
} FvXZ<(A{  
\[_t]'p  
选择排序: a /l)qB#  
0s3%Kqi[  
package org.rut.util.algorithm.support; g:D>.lKd  
|[ k.ii6iO  
import org.rut.util.algorithm.SortUtil; ~>Fu5i $i  
L Mbn  
/** vkd.)x`J,  
* @author treeroot 0g y/:T  
* @since 2006-2-2 %D}kD6=  
* @version 1.0 |w1Bq  
*/ FR4QUk  
public class SelectionSort implements SortUtil.Sort { }`QUHIF  
JG!mc7  
/* `maKN\;  
* (non-Javadoc) ,+vy,<e&  
* R_ ,UMt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2U\u4N O{  
*/ [OV"}<V  
public void sort(int[] data) { ," Wr"  
int temp; aa?b`[Xa  
for (int i = 0; i < data.length; i++) { >WQMqQ^t@  
int lowIndex = i; Mxsa-?R;v  
for (int j = data.length - 1; j > i; j--) { k,E{C{^M  
if (data[j] < data[lowIndex]) { EZy)A$|  
lowIndex = j; +]A:M6P:{v  
} bv9i*]  
} OgQV;at  
SortUtil.swap(data,i,lowIndex); ?U5{Wa85D  
} UkT=W!cq  
} ^ H ThN  
B^Nf #XN(  
} p7VTa~\zA  
~u!|qM  
Shell排序: k)= X}=w  
_8riUt  
package org.rut.util.algorithm.support; ]kG"ubHV?h  
V2?=4mb  
import org.rut.util.algorithm.SortUtil; #ASz;$P  
o]` *M|  
/** djQH1^ (IU  
* @author treeroot 4(~L#}:r!  
* @since 2006-2-2 8'.Hyy@;  
* @version 1.0 ?'#` nx(!  
*/ !M]uL&:  
public class ShellSort implements SortUtil.Sort{ `H_3Uc  
$L>@Ed<  
/* (non-Javadoc) >#;.n(y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?WUA`/[z  
*/ c74.< @w  
public void sort(int[] data) { `d +Da=L  
for(int i=data.length/2;i>2;i/=2){ ,p@y] cr  
for(int j=0;j insertSort(data,j,i); -p&" y3<p  
} :q7Wy&ow  
} k\YG^I  
insertSort(data,0,1); a| x.C6P e  
} axRV:w;E<  
[b<oDX#  
/** |zNX=mAV  
* @param data _AYK435>N  
* @param j o\<ULW*  
* @param i *@r/5pM2}  
*/ 69?wc!  
private void insertSort(int[] data, int start, int inc) { 2c,9e`  
int temp; vNY{j7l/W  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ooL!TS GD  
} bv9]\qC]T<  
} }[};IqVaK  
} ^q vbqfh  
gQelD6c  
} [0[i5'K:  
D/B8tf+V  
快速排序: *74MWF@IY  
}wjw:M  
package org.rut.util.algorithm.support; "3"V3w  
N1S{suic  
import org.rut.util.algorithm.SortUtil; R'`qKc  
PbgP\JeX  
/** "f2$w  
* @author treeroot }J`w4P  
* @since 2006-2-2 Nk 8B_{  
* @version 1.0 +nhLIO{{L  
*/ o>i4CCU+  
public class QuickSort implements SortUtil.Sort{ A5RN5`}  
4*#18<u5  
/* (non-Javadoc) qI9z;_,gNz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K5VWt)Z#  
*/ m6K}|j  
public void sort(int[] data) { 6NuD4Ga  
quickSort(data,0,data.length-1); S_4?K)n #  
} K.nHii   
private void quickSort(int[] data,int i,int j){ (sTpmQx,b  
int pivotIndex=(i+j)/2; Y>T-af49  
file://swap $}q23  
SortUtil.swap(data,pivotIndex,j); 4Zddw0|2  
LTCb@L{^i  
int k=partition(data,i-1,j,data[j]); #s( BuVU  
SortUtil.swap(data,k,j); T_ <@..C  
if((k-i)>1) quickSort(data,i,k-1); S9D<8j^  
if((j-k)>1) quickSort(data,k+1,j); #PW9:_BE  
!bx;Ta.  
} _QE qk@ql  
/** x7w4[QYw  
* @param data ")5":V~fN  
* @param i Al^d$FaF  
* @param j J26 VnK  
* @return {n.PF8A5X  
*/ :$|HNeDO  
private int partition(int[] data, int l, int r,int pivot) { 9Cp-qA%t  
do{ )5JFfp)#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |?xN\O^#}  
SortUtil.swap(data,l,r); t%FwXaO#  
} G]tn i  
while(l SortUtil.swap(data,l,r); SrJGTuXg  
return l; beGa#JH,  
} Rz/gtEP  
P[ck84F/  
} (vnAbR#e  
{.|CdqwY  
改进后的快速排序: XS{Qnx_#  
B eo@K|3GN  
package org.rut.util.algorithm.support; Tc:)- z[o  
A#<?4&  
import org.rut.util.algorithm.SortUtil; |O+H[;TB6  
7#a-u<HF"  
/** .bg~>T+<  
* @author treeroot \fd v]f  
* @since 2006-2-2 `r':by0M  
* @version 1.0 D|p9qe5%  
*/ 9};8?mucr  
public class ImprovedQuickSort implements SortUtil.Sort {  _,0  
FUb\e-Q=  
private static int MAX_STACK_SIZE=4096; Y%^w:|f^  
private static int THRESHOLD=10; !zpRrx_  
/* (non-Javadoc) k FD; i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~&{S<Wl  
*/ 'ya{9EdlT  
public void sort(int[] data) { yYYSeH  
int[] stack=new int[MAX_STACK_SIZE]; E GS)b  
(gU!=F?#m  
int top=-1; )m)-o4c  
int pivot; iB yf{I>+  
int pivotIndex,l,r; pRpBhm;iJ  
djG*YM\B  
stack[++top]=0;  KC6.Fr{  
stack[++top]=data.length-1; rfg'G&A(  
 `25yE/  
while(top>0){ 69NeQ$](  
int j=stack[top--]; {duz\k2  
int i=stack[top--]; }C?'BRX  
4f@rv^f(X  
pivotIndex=(i+j)/2; WDD%Q8ejV&  
pivot=data[pivotIndex]; n'LrQU  
[yQt^!;  
SortUtil.swap(data,pivotIndex,j); #A/  
Rsk4L0  
file://partition o[w:1q7  
l=i-1; ]p GL`ge5  
r=j; 6l x>>J!H  
do{ eJ-xsH*8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); p)-^;=<B3  
SortUtil.swap(data,l,r); q3N jky1w  
} o#Dk& cH  
while(l SortUtil.swap(data,l,r); ()?(I?II  
SortUtil.swap(data,l,j); 4l'fCZhA}  
Lg.gfny[(t  
if((l-i)>THRESHOLD){ 7Q9 w?y~c  
stack[++top]=i; [ l??A3G  
stack[++top]=l-1; 9;u@q%;!k  
} ,w4(kcg%iQ  
if((j-l)>THRESHOLD){ yx[/|nZDC4  
stack[++top]=l+1;  7xlkZF  
stack[++top]=j; Mb}QD~=M  
} 8kIksy  
1R%.p7@5QU  
} Pmx -8w  
file://new InsertSort().sort(data); )2o?#8J  
insertSort(data); h7oo7AP  
} eM6<%?b  
/** Dml;#'IF3  
* @param data v;{#Q&(  
*/ _;y9$"A  
private void insertSort(int[] data) { Dx?,=~W9  
int temp; Bk c4TO  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Hvi49c]]  
} 2l'6.  
} jB2[(  
} <'Eme  
g:@#@1rB6  
} oZgjQM$YP  
h(dvZ= %  
归并排序: %wy.TN  
.~;\eW[  
package org.rut.util.algorithm.support; ?l{nk5,?-Y  
5C ]x!>kX  
import org.rut.util.algorithm.SortUtil; ,&.!?0+  
!;A\.~-!G  
/** .p[ux vp  
* @author treeroot "&u@d~`-n  
* @since 2006-2-2 Wn2NMXK  
* @version 1.0 ^^$s%{ep"  
*/ hn@08t G  
public class MergeSort implements SortUtil.Sort{ KV *#T20T  
JH9J5%sp  
/* (non-Javadoc) Dz/ "M=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T!#GW/?  
*/ + &Eqk  
public void sort(int[] data) { (w3YvG.  
int[] temp=new int[data.length]; 2/^3WY1U  
mergeSort(data,temp,0,data.length-1); </z Eg3F\  
} C,r;VyW6BI  
*i%d,w0+  
private void mergeSort(int[] data,int[] temp,int l,int r){ U8?mc  
int mid=(l+r)/2; d7upz]K9g  
if(l==r) return ; [z{1*Xc  
mergeSort(data,temp,l,mid); g! |kp?  
mergeSort(data,temp,mid+1,r); =dKtV.L  
for(int i=l;i<=r;i++){ :5<UkN)R(  
temp=data; #;yZ  
} #;e:A8IQ  
int i1=l; vk^xT  
int i2=mid+1; _`T_">9r  
for(int cur=l;cur<=r;cur++){ ?fSG'\h>  
if(i1==mid+1) S,UDezxg  
data[cur]=temp[i2++]; v!5 `|\  
else if(i2>r) a1lh-2x X  
data[cur]=temp[i1++]; T8$y[W-c  
else if(temp[i1] data[cur]=temp[i1++]; kDxFloK  
else u6JM]kR  
data[cur]=temp[i2++]; *GPiOA a  
} }Sv:`9=  
} Y$_B1_  
wc4=VC"y  
} 0GeTS Fj  
WOap+  
改进后的归并排序: TC*g|d @b  
)y$(AJx$  
package org.rut.util.algorithm.support; 4!?eRY  
wmLs/:~  
import org.rut.util.algorithm.SortUtil; YS0<qSN  
^ Ze=uP  
/** Q;rX;p^W  
* @author treeroot NBGH_6DROw  
* @since 2006-2-2 kuP(r  
* @version 1.0 sXPe/fWo  
*/ )SGq[B6@I  
public class ImprovedMergeSort implements SortUtil.Sort { ?Uo BV$  
|CyE5i0  
private static final int THRESHOLD = 10; 5.GR1kl6  
'H;*W|:-]  
/* iH@UTE;  
* (non-Javadoc) =Xr.'(U  
* gcT%c|.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gPPkT"  
*/ WNtW|I V  
public void sort(int[] data) { ww1[rCh\+  
int[] temp=new int[data.length]; lThB2/tV\  
mergeSort(data,temp,0,data.length-1); [7y]n;Fy  
} 8":Q)9;%  
D0f]$  
private void mergeSort(int[] data, int[] temp, int l, int r) { y:uE3Apm  
int i, j, k; gB33?  
int mid = (l + r) / 2; +N U G  
if (l == r) X &H"51  
return; eHUOU>&P]  
if ((mid - l) >= THRESHOLD) |[8Th4*n  
mergeSort(data, temp, l, mid); Ny/MJ#Lq  
else *vMn$,^0h9  
insertSort(data, l, mid - l + 1); )^hbsMhO  
if ((r - mid) > THRESHOLD) #RLt^$!H  
mergeSort(data, temp, mid + 1, r); J{G?-+`  
else C0Z=~Q%  
insertSort(data, mid + 1, r - mid); s eJ^s@H5l  
{' H(g[k  
for (i = l; i <= mid; i++) { mt.))#1  
temp = data; aN3;`~{9  
} e\/w'  
for (j = 1; j <= r - mid; j++) { J'r^/  
temp[r - j + 1] = data[j + mid]; GQ ;;bcj&  
} B9S@(/"7  
int a = temp[l]; lyhiFkO iH  
int b = temp[r]; _aeBauD  
for (i = l, j = r, k = l; k <= r; k++) { COlaD"Y  
if (a < b) { 'J|_2*  
data[k] = temp[i++]; MolgwVd  
a = temp; 6Kz,{F@  
} else { x,' !gT:j  
data[k] = temp[j--]; \~wMfP8  
b = temp[j]; d0> zS  
} G3v5KmT  
} [2cD:JL  
} \fe]c :  
q5S9C%b  
/** dAj$1Ke  
* @param data ]]yO1x$Kk  
* @param l I%Z  
* @param i 3Zh)]^  
*/ lu/ (4ED  
private void insertSort(int[] data, int start, int len) { w4Z'K&d=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); poFg 1  
} Ek}A]zC  
} > Nr#O  
} TL#3;l^  
} Oow2>F%_#  
2J;g{95z  
堆排序: 3;Fhg!Z O  
a[TMDU;(/4  
package org.rut.util.algorithm.support; m l$o5&sN  
ehY5!D1Q  
import org.rut.util.algorithm.SortUtil; L/^I*p,  
xId.GWY1  
/** Rx}Gz$   
* @author treeroot vr^qWn  
* @since 2006-2-2 Lj;2\]  
* @version 1.0 PFK  '$  
*/ OZ!^ak  
public class HeapSort implements SortUtil.Sort{ 1aABzB ^  
wlmRe`R  
/* (non-Javadoc) pD]OT-8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) POR\e|hRT]  
*/ e?f IXk~b  
public void sort(int[] data) { G*v,GR  
MaxHeap h=new MaxHeap(); jF*j0PkNdb  
h.init(data); 29q _BR *:  
for(int i=0;i h.remove(); -|\ZrE_h  
System.arraycopy(h.queue,1,data,0,data.length); ^sg,\zD 'X  
} sn>~O4"  
Ecx<OTo  
private static class MaxHeap{ WMP,\=6k0  
,6W>can  
void init(int[] data){ HUOj0T  
this.queue=new int[data.length+1]; ]M'=^32  
for(int i=0;i queue[++size]=data; L&OwPd  
fixUp(size); 61 ~upQaR  
} t&Og$@  
} jlg(drTo  
dAe')N:KPI  
private int size=0; H 7 ^/q7  
~< x:q6  
private int[] queue; y18Y:)DkL  
&G$Ucc `  
public int get() { KCDE{za  
return queue[1]; P L+sR3bR  
} 1g~R/*Jo  
j 1HW._G  
public void remove() { /|#fejPh  
SortUtil.swap(queue,1,size--); W|(1Y D  
fixDown(1); kz7(Z'pw  
} 4I5Y,g{6+  
file://fixdown Ld-_,-n  
private void fixDown(int k) { IdxzE_@  
int j; W'TaBuCb  
while ((j = k << 1) <= size) { pcI uN  
if (j < size %26amp;%26amp; queue[j] j++; ]"1DGg \A  
if (queue[k]>queue[j]) file://不用交换 9 JK Ew  
break; bK-N:8Z  
SortUtil.swap(queue,j,k); maR"t+  
k = j; cPc</[x[W  
} _n\GNUA  
} 5QO9Q]I#_\  
private void fixUp(int k) { Jqi%|,/]N  
while (k > 1) { -C&P%tt Y  
int j = k >> 1; vgN&K@hJ  
if (queue[j]>queue[k]) 0'o:#-  
break; w"&n?L  
SortUtil.swap(queue,j,k);  1ZB"EQ  
k = j; FN) $0  
} "G9xMffW  
} ?#Q #u|~  
lCHO;7YHX  
} *s iFj CN<  
-+-_I*(  
} ges J/I  
'(jG[ry&T  
SortUtil: Lbb0_-']  
QnX(V[  
package org.rut.util.algorithm; %C_HXr@  
',5 ky{  
import org.rut.util.algorithm.support.BubbleSort; =zs`#-^8  
import org.rut.util.algorithm.support.HeapSort; ]L}dzA?:  
import org.rut.util.algorithm.support.ImprovedMergeSort; j^2j& Ta  
import org.rut.util.algorithm.support.ImprovedQuickSort; v1,oilL  
import org.rut.util.algorithm.support.InsertSort; gr-OHeid  
import org.rut.util.algorithm.support.MergeSort; @49S`  
import org.rut.util.algorithm.support.QuickSort; KRKCD4  
import org.rut.util.algorithm.support.SelectionSort; d9|<@A  
import org.rut.util.algorithm.support.ShellSort; .Rf_Cl  
"`1bA"E  
/** }?v )N).kW  
* @author treeroot Z>#i**  
* @since 2006-2-2 2Q:+_v  
* @version 1.0 4tmAzD  
*/ 0%I=d  
public class SortUtil { pIKPXqA  
public final static int INSERT = 1; ,U dVNA  
public final static int BUBBLE = 2; x.R4% Z  
public final static int SELECTION = 3; Y% 5eZ=z  
public final static int SHELL = 4; ZO$%[ftb  
public final static int QUICK = 5; jsi!fx2Rm  
public final static int IMPROVED_QUICK = 6; T:W4$P  
public final static int MERGE = 7; )p%E%6p  
public final static int IMPROVED_MERGE = 8; w$-6-rE]d  
public final static int HEAP = 9; S#} KIy  
)q3p-)@kQ  
public static void sort(int[] data) { 6<(.4a?  
sort(data, IMPROVED_QUICK); n#_$\ p>Yd  
} W#3Q ^Z?  
private static String[] name={ v^+Sh|z/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "AGLVp.zT  
}; W X6&oy>  
L5:$U>H(  
private static Sort[] impl=new Sort[]{ !0mI;~q|F  
new InsertSort(),  U}j0D2  
new BubbleSort(), 'F#KM1s  
new SelectionSort(), B~Xw[q  
new ShellSort(), ))'<_nD  
new QuickSort(), ~zNAbaC+>t  
new ImprovedQuickSort(), XAL1|] S  
new MergeSort(), iTU5l5Uz  
new ImprovedMergeSort(), N_[*H  
new HeapSort() xe&i^+i  
}; ;q6Ki.D  
G {%LB}2  
public static String toString(int algorithm){ fNZ__gO!%  
return name[algorithm-1]; y;@:ulv[  
} [RTs[3E^  
@@ %.t|=  
public static void sort(int[] data, int algorithm) { QWHug:c  
impl[algorithm-1].sort(data); 3"KCh\\b  
} n t7.?$  
"vE4E|  
public static interface Sort { E\pL!c  
public void sort(int[] data); )gy!GK  
} QbpFE)TYJ|  
D]Xsvv #  
public static void swap(int[] data, int i, int j) { ) M BQuiL  
int temp = data; q;>7*Y&  
data = data[j]; (+y  
data[j] = temp; .z}~4BY  
} K~eh P[^  
} P;]F(in=  
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