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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。 CGzu(@dd\  
插入排序: f*B-aj#  
w#[cGaIB  
package org.rut.util.algorithm.support; 3fp&iz  
n=bdV(?4  
import org.rut.util.algorithm.SortUtil; ;Xy=;Z.]i  
/** 2,F9P+  
* @author treeroot '5 ~cd  
* @since 2006-2-2 as|w} $  
* @version 1.0 PCHspe9!y  
*/ pA8As  
public class InsertSort implements SortUtil.Sort{ W>i"p~!  
Ei):\,Nv  
/* (non-Javadoc) FOk;=+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @aZTx/  
*/ P!E2.K,  
public void sort(int[] data) { *<!q@r<d  
int temp; )S(Ly.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RG""/x ;  
} #MlpOk*G  
} Y}v3J(l  
} ~bx ev/$d  
4|E^ #C  
} j7gw?,  
xsn=Ji2 F  
冒泡排序: )?UoF&c/  
Jp_#pV*}:  
package org.rut.util.algorithm.support; {\(MMTQ  
@$T$hMl  
import org.rut.util.algorithm.SortUtil; `vgaX,F*  
4minzrKM\  
/** 5N;'CAk  
* @author treeroot @;tfHoXD  
* @since 2006-2-2 (=Cb)/s0  
* @version 1.0 T"W<l4i-  
*/ +IWH7qRtp  
public class BubbleSort implements SortUtil.Sort{ #aU!f"SS  
*>KBDFI  
/* (non-Javadoc) 5C9b*]-#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NeG` D'  
*/ Q`<{cFsU  
public void sort(int[] data) { x lS*9>Ij  
int temp; f4b9o[,s2e  
for(int i=0;i for(int j=data.length-1;j>i;j--){ P .m@|w&.K  
if(data[j] SortUtil.swap(data,j,j-1); .Mb[j1L^  
} LWT\1#  
} _E`+0;O  
} <3x%-m+p4  
} 32<D9_  
Qk:Lo*!  
} &Y=0 0  
P,{Q k~iu  
选择排序: PY.K_(D  
$TXxhd 6  
package org.rut.util.algorithm.support; 3TF_$bd{  
p> `rTaeZg  
import org.rut.util.algorithm.SortUtil; Iz09O:ER  
0X5cn 0L^  
/** <.QaOLD  
* @author treeroot  7;fC%Fq  
* @since 2006-2-2 uLS]=:BT  
* @version 1.0 fx5S2%f^  
*/ #f2k*8"eAF  
public class SelectionSort implements SortUtil.Sort { 8m?(* [[  
B#Ybdp ;  
/* \D?'.Wo%  
* (non-Javadoc) lD0-S0i  
* D4!;*2t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X3l>GeUi  
*/ /{i~-DVME  
public void sort(int[] data) { II=`=H{  
int temp;  7H  
for (int i = 0; i < data.length; i++) { y9 {7+]  
int lowIndex = i; 7Ed0BJTa  
for (int j = data.length - 1; j > i; j--) { 112 WryS  
if (data[j] < data[lowIndex]) { B>^6tdz  
lowIndex = j; n[iwi   
} ^?`fN'!p  
} Swhz\/u9  
SortUtil.swap(data,i,lowIndex); \5r^D|Rp}  
} 9:USxFM  
} 't5ufAT  
6(bN*.  
} Fvl\.  
K$,Zg  
Shell排序: 5wx_ol}2  
JY#vq'dl|  
package org.rut.util.algorithm.support; yS W$zA,  
ZL6HD n!  
import org.rut.util.algorithm.SortUtil; 3\XNOJH  
cmG27\cRO  
/** j#5a&Z  
* @author treeroot )/$J$'mcxd  
* @since 2006-2-2 sm/a L^4  
* @version 1.0 ?%  24M\  
*/ @*YF!LdU{M  
public class ShellSort implements SortUtil.Sort{  !Ld5Y$  
u /F!8#  
/* (non-Javadoc) u?Ffqt9'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?s^qWA  
*/ #Q8_:dPY  
public void sort(int[] data) { f1 x&Fk  
for(int i=data.length/2;i>2;i/=2){ %Rc#/y  
for(int j=0;j insertSort(data,j,i); JY,$B-l  
} Zd[rn:9\  
} Ek)drt7cy  
insertSort(data,0,1); t{]Ew4Y4%O  
} U6M ~N0)Yr  
Ib#-M;{  
/** bej(Ds0  
* @param data I@cw=_EQL  
* @param j ZbYC3_7w  
* @param i =0g!Q   
*/ ]].~/kC^3k  
private void insertSort(int[] data, int start, int inc) { k: Pn.<  
int temp; gXdMGO>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0~qc,-)3  
} Pao^>rj  
} > <YU'>%  
} @|b-X? `  
zEI+)|4?r  
} 9&Jf4lC94  
M&V'*.xz  
快速排序: xS,24{-HJ  
QRQZ{m  
package org.rut.util.algorithm.support; 6m:$mhA5  
GmH DG-  
import org.rut.util.algorithm.SortUtil; =0ZRG p  
!?P8[K  
/** Nm?^cR5r  
* @author treeroot dR S:S_  
* @since 2006-2-2 |4df)  
* @version 1.0 3a?-UT!  
*/ QHR,p/p  
public class QuickSort implements SortUtil.Sort{ d0:LJ'<Q  
"2cOSPpQL  
/* (non-Javadoc) FH,]'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $tmdE )"&  
*/ cRT'?w`}  
public void sort(int[] data) { ?\V#^q-  
quickSort(data,0,data.length-1); B6  0  
} e(0OZ_w  
private void quickSort(int[] data,int i,int j){ Ehx9-*]  
int pivotIndex=(i+j)/2; Tv=lr6t8  
file://swap S^rf^%  
SortUtil.swap(data,pivotIndex,j); `8!9Fp  
h=#w< @  
int k=partition(data,i-1,j,data[j]); ` B)@  
SortUtil.swap(data,k,j); Z`S# > o  
if((k-i)>1) quickSort(data,i,k-1); w2DC5ei'  
if((j-k)>1) quickSort(data,k+1,j); b#_RZ  
2ioHhcYdJU  
} A=N$5ZJ  
/** +RooU?Aq  
* @param data 7:jLZ!mgi  
* @param i 7f>=-sv  
* @param j C"I jr=w  
* @return t(z]4y  
*/ 2&1mI>:F  
private int partition(int[] data, int l, int r,int pivot) { 2aYBcPFQh#  
do{ Scrj%h%[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xo[o^go  
SortUtil.swap(data,l,r); .t "VsY|  
} _?~%+Oz/  
while(l SortUtil.swap(data,l,r); T8^9*]:@c!  
return l; K[z)ts-  
} *Al@|5  
jWrU'X  
} X)b$CG  
P[3i!"O>  
改进后的快速排序: h4;kjr}h}  
&QHJ%c  
package org.rut.util.algorithm.support; MAek856  
o"VKAP  
import org.rut.util.algorithm.SortUtil; F&B\ X  
:G _  
/** y]h0c<NP  
* @author treeroot o[ 5dR<  
* @since 2006-2-2 OC=&!<  
* @version 1.0 *vb"mB  
*/ Hyb(.hlZh  
public class ImprovedQuickSort implements SortUtil.Sort { w!f2~j~  
"jL>P )  
private static int MAX_STACK_SIZE=4096; <M:BN6-yG  
private static int THRESHOLD=10; JEto_&8,C  
/* (non-Javadoc) kdNo<x1o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9j 2t|D4uT  
*/ y'2|E+*V  
public void sort(int[] data) { xw#CwMbbi  
int[] stack=new int[MAX_STACK_SIZE]; [^hW>O=@TN  
\=%lH= yS  
int top=-1; Qq,2V  
int pivot; 6GxLaI  
int pivotIndex,l,r; 5JzvT JMx  
}* :3]  
stack[++top]=0; )9eI o&Nl  
stack[++top]=data.length-1; )iN;1>  
]_s3<&R  
while(top>0){ !l[;,l   
int j=stack[top--]; D3Q+K  
int i=stack[top--]; rq%]CsRY5  
:>&q?xvA  
pivotIndex=(i+j)/2; Hv;xaT<}V  
pivot=data[pivotIndex]; CNNqS^ct  
NW\CEJV  
SortUtil.swap(data,pivotIndex,j); Fd9[Pe@?`  
Ks.b).fH  
file://partition A]BeI  
l=i-1; 6"-$WUlg  
r=j; 7By7F:[b  
do{ tJ(xeb  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !f~a3 {;j  
SortUtil.swap(data,l,r); x1gS^9MqCB  
} lSX1|,B7:]  
while(l SortUtil.swap(data,l,r); L.;b( bFe  
SortUtil.swap(data,l,j); "tyRnUP  
45yP {+/-Q  
if((l-i)>THRESHOLD){ m212 gc0u  
stack[++top]=i; vXKL<  
stack[++top]=l-1; MzvhE0ab  
} #cY[c1cNv  
if((j-l)>THRESHOLD){ LLx0X O@  
stack[++top]=l+1; Ca |}i+  
stack[++top]=j; *V&M5  
} :2/L1A)O  
!9d7wPUFr  
} +g1>h ,K 3  
file://new InsertSort().sort(data); H!;N0",]N  
insertSort(data); oG,>Pk  
} O,%UNjx9K  
/** mE~ WE+lw9  
* @param data MIJuJ]U}  
*/ Jn hdZa  
private void insertSort(int[] data) { F,_L}  
int temp; k0Vri$x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *BKD5EwS  
} e:G~P u`  
} t'_EcYNS  
} 2}^=NUM\NX  
{6u)EJ  
} kff N0(MR  
#S7oW@  
归并排序: >LPb>t5%p  
Fyvo;1a  
package org.rut.util.algorithm.support; - (s0f  
*f+s  
import org.rut.util.algorithm.SortUtil; uEgR>X>  
o)I)I/v  
/** YJ~<pH  
* @author treeroot H; `F}qQ3  
* @since 2006-2-2 l,|Llb  
* @version 1.0 CPZ{  
*/ SK}jhm"y  
public class MergeSort implements SortUtil.Sort{ ~(GvjB/C8  
67EGkW?hbt  
/* (non-Javadoc) >nkVZ;tL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FG${w.e<  
*/ k8 #8)d  
public void sort(int[] data) { TQB) A9  
int[] temp=new int[data.length]; MZ3 8=nJ  
mergeSort(data,temp,0,data.length-1); Le#srr  
} +?\JQ|  
hWly8B[I  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ti2cD  
int mid=(l+r)/2; ~W @dF~r  
if(l==r) return ; )?{<Tt@  
mergeSort(data,temp,l,mid); M7BpOmK'  
mergeSort(data,temp,mid+1,r); D5"5`w=C  
for(int i=l;i<=r;i++){ &[yC M!  
temp=data; wH"9N+82M  
} 8L[+$g`  
int i1=l; yu_PZ"l  
int i2=mid+1; E$%v);u  
for(int cur=l;cur<=r;cur++){ CDJ@Tdp  
if(i1==mid+1) !$Uo$?gC  
data[cur]=temp[i2++]; ij]UAJ}t  
else if(i2>r) Dbn ~~P  
data[cur]=temp[i1++]; e"866vc,  
else if(temp[i1] data[cur]=temp[i1++]; 1(;{w +nM  
else  r(^00hvH  
data[cur]=temp[i2++]; |?KYY0  
} D:k< , {  
} hT%fM3|,e  
%Za}q]?  
} IYn`&jS{  
)B]"""J  
改进后的归并排序: wXQu%F3  
~2* LWH*@  
package org.rut.util.algorithm.support; r (m3"Xu6O  
3?E7\\/R  
import org.rut.util.algorithm.SortUtil; P 0\`4Cr!  
!$n@:W/  
/** bofI0f}5.  
* @author treeroot TqJ @l  
* @since 2006-2-2 <HnJD/g  
* @version 1.0 O n0!>-b,  
*/ }/J"/ T  
public class ImprovedMergeSort implements SortUtil.Sort { RrxbsG1HP  
,|c;x1|O  
private static final int THRESHOLD = 10; _HM?p(H@  
A"r<$S6  
/* Kjbk zc1  
* (non-Javadoc) Sk EI51]  
* Op0*tj2i),  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Um/l{:S   
*/ xy`Y7W=  
public void sort(int[] data) { aUL7 ]'q}  
int[] temp=new int[data.length]; 7s^b@&Le  
mergeSort(data,temp,0,data.length-1); l]wfL;u  
} KS#A*BRQ  
I{w(`[Nxw*  
private void mergeSort(int[] data, int[] temp, int l, int r) { bR3Crz(9G  
int i, j, k; i).Vu}W#S  
int mid = (l + r) / 2; ] 6(%tU  
if (l == r) yoGG[l2k>s  
return; & *tL)qKDc  
if ((mid - l) >= THRESHOLD) 8i$|j~M a  
mergeSort(data, temp, l, mid); l!gX-U%-  
else (PE.v1T  
insertSort(data, l, mid - l + 1); a;5clonB  
if ((r - mid) > THRESHOLD) 1Z0Qkd(  
mergeSort(data, temp, mid + 1, r); << =cZ.HP  
else 9O &]!ga  
insertSort(data, mid + 1, r - mid); p7AsNqEp  
]ovtH .y  
for (i = l; i <= mid; i++) { OM.-apzC  
temp = data; HG /fp<[   
} -pJ\_u/&%`  
for (j = 1; j <= r - mid; j++) { TgJ+:^+0  
temp[r - j + 1] = data[j + mid]; Yv=L'0K&  
} :UT \L2 q=  
int a = temp[l]; U _pPI$ =  
int b = temp[r]; OfrzmL<K  
for (i = l, j = r, k = l; k <= r; k++) { nYyKz Rz  
if (a < b) { H6Zo|n  
data[k] = temp[i++]; S.[L?uE~F  
a = temp; ~NE`Ad.G  
} else { 6 JI8l`S  
data[k] = temp[j--]; ;a|%W4"  
b = temp[j]; 0++RxYFCL  
} ` C d!  
} ~_0XG0oA  
} 2iKteJ@h)  
E6R\ DM  
/** kJ%a;p`O  
* @param data 4,@jSr|I3i  
* @param l "KF]s.  
* @param i !pj&h0CR  
*/ BNk>D|D;  
private void insertSort(int[] data, int start, int len) { S['rTuk  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); aAP86MHO  
} :CqR1_n%  
} E<D^j^T  
} N[-$*F,:_  
} uo?R;fX26  
KCpq<A%  
堆排序: @r<2]RXlc  
KtJc9dnX  
package org.rut.util.algorithm.support; jHob{3  
Mi NEf  
import org.rut.util.algorithm.SortUtil; ouyZh0 G  
8 # BR\  
/** D?dS/agA  
* @author treeroot Lo}T%0"G  
* @since 2006-2-2 <iH   
* @version 1.0 4lCbUk[l  
*/ ` >>]$ZJ  
public class HeapSort implements SortUtil.Sort{ PDH|=meXM  
'w1ll9O  
/* (non-Javadoc) Vug[q=i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C[{E8Tg/  
*/ 6J- /%  
public void sort(int[] data) { /F^ Jn_  
MaxHeap h=new MaxHeap(); n4B uM R  
h.init(data); ,Y| ;V  
for(int i=0;i h.remove(); G,+3(C  
System.arraycopy(h.queue,1,data,0,data.length); Ya~Th)'>q  
} Y_C6*T%  
^N^s|c'  
private static class MaxHeap{ )l(DtU!E  
%p7onwKq0  
void init(int[] data){ Ik, N/[  
this.queue=new int[data.length+1]; 9W-" mD;  
for(int i=0;i queue[++size]=data; i"+TKo-  
fixUp(size); )b%zYD9p  
} QxbG-B^)=  
} x8c>2w;6x^  
PYNY1 |3  
private int size=0; vo:h"ti  
*6][[)(  
private int[] queue; <Vt"%C  
uwi.Sg11  
public int get() { 4Q1R:Ra  
return queue[1]; , ExY.'%1  
} 0,&] 2YJ  
Jq"3xj   
public void remove() { !K2QD[x  
SortUtil.swap(queue,1,size--); Piw i  
fixDown(1); GBBp1i  
} N_FjEZpX  
file://fixdown =b"{*Heuw  
private void fixDown(int k) { J0f!+]~G3  
int j; =eS?`|  
while ((j = k << 1) <= size) { 0dsL%G~/N  
if (j < size %26amp;%26amp; queue[j] j++; x1Z'_Qw  
if (queue[k]>queue[j]) file://不用交换 s^.tj41Gx}  
break; 2B)1 tP  
SortUtil.swap(queue,j,k); .F%jbnKd_  
k = j; <Mj{pN3  
} Z;tWV%F5  
} ~$//4kES  
private void fixUp(int k) { S|KUh|=Q  
while (k > 1) { ang~_Ec.  
int j = k >> 1; NYKYj`K  
if (queue[j]>queue[k]) ;gAL_/_  
break; B7Zi|-F  
SortUtil.swap(queue,j,k); +~:OUR*>  
k = j; {wk#n.c  
} owyQFk  
} lqO>Q1_{K  
A@Zqh<,Ud  
} eHIcfp@&  
r}(mjC"o  
} e%)MIAS0  
6#qt%t%?D  
SortUtil: 1A* "v  
b5.]}>]t  
package org.rut.util.algorithm; UxF9Ko( ]d  
sV0NDM0  
import org.rut.util.algorithm.support.BubbleSort; GJU9[  
import org.rut.util.algorithm.support.HeapSort; 92C; a5s  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7hLh}  
import org.rut.util.algorithm.support.ImprovedQuickSort; >o3R~ [  
import org.rut.util.algorithm.support.InsertSort; 2qVoe}F  
import org.rut.util.algorithm.support.MergeSort; 0DnOO0Nc  
import org.rut.util.algorithm.support.QuickSort; f<oU" WM  
import org.rut.util.algorithm.support.SelectionSort; Vo.~1^  
import org.rut.util.algorithm.support.ShellSort; fo~*Bp()-E  
WCk. K  
/** C1l'<  
* @author treeroot \"L0d1DK)  
* @since 2006-2-2 O:~J_Wwl!  
* @version 1.0 MXDCOe~07  
*/  !I&,!$  
public class SortUtil { P1^|r}  
public final static int INSERT = 1; e^x%d[sU  
public final static int BUBBLE = 2; '.gi@Sr5  
public final static int SELECTION = 3; pp{p4Z   
public final static int SHELL = 4; 'mm>E  
public final static int QUICK = 5; #_K<-m%9  
public final static int IMPROVED_QUICK = 6; K3WaBcm  
public final static int MERGE = 7; gLFTnMO  
public final static int IMPROVED_MERGE = 8; LylCr{s7  
public final static int HEAP = 9; Jk7 Am-.0  
8^_e>q*W  
public static void sort(int[] data) { C9""sVs  
sort(data, IMPROVED_QUICK); ~6O~Fth  
} BG.sHI{  
private static String[] name={ h qhX  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" q\gbjci  
}; 3^$=XrD  
Bga4kjfmk  
private static Sort[] impl=new Sort[]{ to1r 88X  
new InsertSort(), >#gDk K  
new BubbleSort(), q"S,<I<f  
new SelectionSort(), p-w:l*-`  
new ShellSort(), vCK+v r!  
new QuickSort(), BnDCK@+|Q  
new ImprovedQuickSort(), cW"DDm g  
new MergeSort(), bC) <K/Q9  
new ImprovedMergeSort(), 0V^I.S/q  
new HeapSort() -yBj7F|  
}; ,q7FK z{  
6R$Yh0%  
public static String toString(int algorithm){ .j>MsQP#\C  
return name[algorithm-1]; Q7d@+C  
} -XK;B--c  
7xux%:BN  
public static void sort(int[] data, int algorithm) { ?Pf#~U_  
impl[algorithm-1].sort(data); m I:^lp  
} 0_Elxc  
&N+`O)$  
public static interface Sort { cD)9EFo  
public void sort(int[] data); 8|L@-F  
} /& c2y=/'C  
$<&_9T#&w  
public static void swap(int[] data, int i, int j) { BSJS4+,E  
int temp = data; Dfc% jWbA  
data = data[j]; 2+C:Em0yI  
data[j] = temp; ;4GGXT++L  
} /eXiWasQ  
} WSv%Rxr8L  
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