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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。 _z#S8Y  
插入排序: #qEUGD`  
bV*q~ @xh  
package org.rut.util.algorithm.support; TUQe.oAi  
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import org.rut.util.algorithm.SortUtil; D e$K  
/** )$O'L7In&  
* @author treeroot 3)l<'~"z<  
* @since 2006-2-2 o%h[o9i  
* @version 1.0 #BI6+rfv|  
*/ , lBHA+@  
public class InsertSort implements SortUtil.Sort{ h0l_9uI  
ei[,ug'  
/* (non-Javadoc) =[)2DJC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <}%gZ:Z6g  
*/ vfh\X1Ui}  
public void sort(int[] data) { '=UsN_@  
int temp; n,p \~Tu,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U.ew6`'Te  
} C-(O*hK  
} xz}=C:s  
} LEAU3doK;  
LO k J  
} 1R#1Fy%  
wy""02j  
冒泡排序: 't475?bY  
:|=Xh"l"  
package org.rut.util.algorithm.support; @[;$R@M_3  
OuB [[L  
import org.rut.util.algorithm.SortUtil; 0}\8,U  
k[1w] l8  
/** ItG|{Bo  
* @author treeroot n&E/{o(  
* @since 2006-2-2 "ZG2olOqLI  
* @version 1.0 [t]q#+Zs  
*/ Jx8DVjy  
public class BubbleSort implements SortUtil.Sort{ Z}>+!Z  
)2b bG4:N  
/* (non-Javadoc) |YrvY1d!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wR9gx-bE 4  
*/ K` <`l  
public void sort(int[] data) { -B:O0;f  
int temp; *C(q{|f  
for(int i=0;i for(int j=data.length-1;j>i;j--){ N&W7g#F  
if(data[j] SortUtil.swap(data,j,j-1); i6k~j%0m  
} o H]FT{  
} ::Pf\Lb>  
} sP%J`L@h  
} eS2VLVxu  
wOR#sp&  
} FNXVd/{M3  
^ ;cJjl'=  
选择排序: Kxsj_^&|i  
LhKUZX,P8  
package org.rut.util.algorithm.support; B_0]$D0 ^  
?xo<Fv  
import org.rut.util.algorithm.SortUtil; ZIaFvm&q7Z  
?M04 cvm  
/** -raZ6?Zjc  
* @author treeroot 5:l"*  
* @since 2006-2-2 L$; gf_L  
* @version 1.0 d)v!U+-|'  
*/ WZ ,t~TN  
public class SelectionSort implements SortUtil.Sort {  >fgV!o4  
w M#q [m;  
/* _;k))K^  
* (non-Javadoc) Le,+jm  
* }Q{4G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C,5Erb/  
*/ 4cAx9bqA  
public void sort(int[] data) { jq+:&8!8(e  
int temp; Z DnAzAR  
for (int i = 0; i < data.length; i++) { 5K|s]Y;  
int lowIndex = i; `,6^eLU  
for (int j = data.length - 1; j > i; j--) { )h;zH,DA[3  
if (data[j] < data[lowIndex]) { +9_E+H'?!  
lowIndex = j; }-paGM@'Nd  
} fq0[7Yb  
} \V9);KAOj  
SortUtil.swap(data,i,lowIndex); -257g;  
} 3$kElq[  
} bt?)ryu  
~;nW+S$o  
} 7`K)7  
9S)A6]  
Shell排序: :']O4v#^  
E=~Ahkg  
package org.rut.util.algorithm.support; ZmJHLn[ B  
|1Ko5z  
import org.rut.util.algorithm.SortUtil; ^Kh>La:>O  
z0 _/JwJn  
/** zKaEh   
* @author treeroot Redxg.P  
* @since 2006-2-2 ^s?i&K,!  
* @version 1.0 {>.qo<k  
*/ XO J@-^BX  
public class ShellSort implements SortUtil.Sort{ L&~>(/*7U  
r7N% onx  
/* (non-Javadoc) #>qA&*+{n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DT#Z6A  
*/ Mer\W6e"e  
public void sort(int[] data) { pPZ^T5-ks  
for(int i=data.length/2;i>2;i/=2){ 0mR  
for(int j=0;j insertSort(data,j,i); 2)>Ty4*  
} w7h=vy n?  
} AmT*{Fz8  
insertSort(data,0,1); tqK}KL  
} 2&U<Wiu\}  
Px"K5c*  
/** pXHeUBY.  
* @param data &E8fd/s= k  
* @param j " qrL:,   
* @param i %b`B.A  
*/ 0qD.OF)8  
private void insertSort(int[] data, int start, int inc) { ^->vUf7PX  
int temp; !<MW*7P=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =DXvt5G  
} IctLhYZ  
} dLTA21b#  
} \)9R1zp/x  
&SK=ZOKg^  
} CI,xp  
(Zu V5|N  
快速排序: ` G.:G/b%H  
<2R xyoDL6  
package org.rut.util.algorithm.support; AkR ZUj\  
_k.gVm  
import org.rut.util.algorithm.SortUtil; 60Obek`  
_fANl}Mf:  
/** eE;")t,  
* @author treeroot ' k[gxk|d2  
* @since 2006-2-2 G6x2!Ny  
* @version 1.0 sOW,hpNW  
*/ F`YxH*tO7  
public class QuickSort implements SortUtil.Sort{ Z'z~40Bda  
S~ 3|  
/* (non-Javadoc) )Z2t=&Nw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <0I=XsE1iX  
*/ t ~"DQq E  
public void sort(int[] data) { ]6{\`a  
quickSort(data,0,data.length-1); E.~~.2   
} uu582%tiG  
private void quickSort(int[] data,int i,int j){ B 9AE*  
int pivotIndex=(i+j)/2; W4(O2RU  
file://swap [u2)kH$  
SortUtil.swap(data,pivotIndex,j); {01wW1  
Nm/Fc   
int k=partition(data,i-1,j,data[j]); ?YbZVoD)J  
SortUtil.swap(data,k,j); *npe]cC  
if((k-i)>1) quickSort(data,i,k-1); A?8 29<  
if((j-k)>1) quickSort(data,k+1,j); -d6*M*{|  
v;@-bED(Qs  
} `+0)dTA(g$  
/** yLlAK,5P0o  
* @param data +,$"%C  
* @param i mg^\"GC*8  
* @param j #`H^8/!e  
* @return wh;E\^',n  
*/ in6iJ*E@'  
private int partition(int[] data, int l, int r,int pivot) { cZ~\jpK  
do{ > ak53Ij$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u +OfUBrf  
SortUtil.swap(data,l,r); v{2 Vg  
} ^~dvA)bH  
while(l SortUtil.swap(data,l,r); +(<}`!9M*  
return l; ~X -.@k'  
} v+Q# O[  
g#ONtY@*U  
} F- n1J?4b  
AFSFXPl "  
改进后的快速排序: ?k:i3$  
QYL ';  
package org.rut.util.algorithm.support; BOp&s>hI  
LvNk:99:<  
import org.rut.util.algorithm.SortUtil;  VgNt  
q}["Nww-  
/** jTx,5s-  
* @author treeroot [Pt5c6L:  
* @since 2006-2-2 V-w[\u  
* @version 1.0 ynN[N(m#  
*/ G{ $Zg  
public class ImprovedQuickSort implements SortUtil.Sort { %R{clbbbn  
-h8!O+7 .  
private static int MAX_STACK_SIZE=4096; ^$y_~z3o#7  
private static int THRESHOLD=10; BE }qwP^  
/* (non-Javadoc) lA<IcW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W$Bx?}x($  
*/ P( W8XC  
public void sort(int[] data) { o;JBe"1  
int[] stack=new int[MAX_STACK_SIZE]; I -obfyije  
<ZNa`  
int top=-1; m H'jr$ ?  
int pivot; STmCj  
int pivotIndex,l,r; +:[dviyPt  
ca_8S8lv  
stack[++top]=0; UmU=3et<Wj  
stack[++top]=data.length-1; y*6r&989  
:LFw J  
while(top>0){ |C S[>0mV!  
int j=stack[top--]; <u"#Jw/VP  
int i=stack[top--]; yREO;m|o  
8C=Y(vPk2  
pivotIndex=(i+j)/2; F77[fp  
pivot=data[pivotIndex]; XI,F^K  
qD4e] 5  
SortUtil.swap(data,pivotIndex,j); ^dP@QMly6  
"FaG5X(  
file://partition RS/%uxS?  
l=i-1; Nu{RF  
r=j; +Z[%+x92  
do{ 0p$?-81BJ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q#PGcCtu  
SortUtil.swap(data,l,r); MT#9x>  
} MnsnW{VGX  
while(l SortUtil.swap(data,l,r); TR@$$RrU  
SortUtil.swap(data,l,j); "O|fX\}5  
$(}kau  
if((l-i)>THRESHOLD){ Y^S0K'N  
stack[++top]=i; (w% hz']  
stack[++top]=l-1; c uquA ~  
} a(8]y.`Tv  
if((j-l)>THRESHOLD){ mI in'M  
stack[++top]=l+1; s$:]$&5  
stack[++top]=j; 4aB`wA^x  
} Y@u{73H  
L i=l/  
} !HDk]   
file://new InsertSort().sort(data); =fi.*d?$7  
insertSort(data); V|HSIJ#J  
} > KH4X:  
/** fC%;|V'Nd  
* @param data qBX<{[  
*/ EGGy0ly  
private void insertSort(int[] data) { XW]|Mv[M  
int temp; %_SE$>v^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Yjk A^e  
} }.zgVL L  
} o<P%|>qX  
} L +.K}w  
G68N@g  
} ^"+cJ)  
AD?^.<  
归并排序: dGh<R|U3  
~`_nw5y  
package org.rut.util.algorithm.support; .#WF'  
'}4[m>/  
import org.rut.util.algorithm.SortUtil; W {dx\+  
Z{_'V+Q1  
/** Qn%*kU0X  
* @author treeroot 5I(` s#O  
* @since 2006-2-2 ) _2!1  
* @version 1.0 'A8T.BU  
*/ cB<0~&  
public class MergeSort implements SortUtil.Sort{ ;co{bk|rj  
D|-]"(2i  
/* (non-Javadoc) 1<5 9)RiO>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rhn*k f{8  
*/ "v*RY "5#  
public void sort(int[] data) { EUna_ 4=  
int[] temp=new int[data.length]; gi;V~>kh  
mergeSort(data,temp,0,data.length-1); 6u:5]e8  
} oS,<2Z  
,}FYY66K  
private void mergeSort(int[] data,int[] temp,int l,int r){ Dh +^;dQ6  
int mid=(l+r)/2; PL+fLCk,I  
if(l==r) return ; ={L:q8v)  
mergeSort(data,temp,l,mid); ,CM$A}7[  
mergeSort(data,temp,mid+1,r); Tu/JhP/g,`  
for(int i=l;i<=r;i++){ l3iL.?&Pa  
temp=data; 053W2Si   
} l1W5pmhK]'  
int i1=l; m_Fw ;s/9  
int i2=mid+1; dEe/\i'r9  
for(int cur=l;cur<=r;cur++){ eIqj7UY_  
if(i1==mid+1) DD3J2J  
data[cur]=temp[i2++]; w@%W{aUC  
else if(i2>r) ;:$Na=  
data[cur]=temp[i1++]; @Qc['V)  
else if(temp[i1] data[cur]=temp[i1++]; qo. 6T  
else #sqDZ]\B  
data[cur]=temp[i2++]; H8-,gV  
} %] #; ~I%  
} Yaa M-o  
q75F^AvH  
} 09%eaoW  
%74 Ms  
改进后的归并排序: hU=J^Gi0  
Z(}x7jzW  
package org.rut.util.algorithm.support; x(=kh%\;  
ap6Vmp  
import org.rut.util.algorithm.SortUtil; fnmZJJ,Q  
LiB0]+wzj  
/** m1[QD26  
* @author treeroot T:!sfhrZ~<  
* @since 2006-2-2 ,<vrDHR  
* @version 1.0 "]NQTUb;  
*/ 40 c#zCE  
public class ImprovedMergeSort implements SortUtil.Sort { xd .I5  
zA"D0fr  
private static final int THRESHOLD = 10; QOF;j#H^  
M3t_!HP}!  
/* f`IgfJN  
* (non-Javadoc) "rKIXy  
* !<YRocQY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) quKD\hL$  
*/ uRL3v01?H0  
public void sort(int[] data) { AV2q*  
int[] temp=new int[data.length]; 5r+0^UAO:J  
mergeSort(data,temp,0,data.length-1); %DV@2rC<  
} S|>Up%{n[  
{X =\  
private void mergeSort(int[] data, int[] temp, int l, int r) { l.34h  
int i, j, k; _$bx4a  
int mid = (l + r) / 2; Z?X$8o^Z  
if (l == r) )>Lsj1qk  
return; {!/y@/NK2  
if ((mid - l) >= THRESHOLD) V.-?aXQ*  
mergeSort(data, temp, l, mid); <m6Xh^Ko;  
else ~<Lf@yu-{  
insertSort(data, l, mid - l + 1); ?\O+#U%W  
if ((r - mid) > THRESHOLD) y\S7oD(OR  
mergeSort(data, temp, mid + 1, r); 5~44R@`  
else v =?V{"wk!  
insertSort(data, mid + 1, r - mid); FI/YJ@21  
zhCI+u4/qz  
for (i = l; i <= mid; i++) { )-QNWN H  
temp = data; 18n84RkI9  
} `Eu(r]:W  
for (j = 1; j <= r - mid; j++) { Gz6GU.IyQy  
temp[r - j + 1] = data[j + mid]; {//F>5~[  
} kK1qFe?]  
int a = temp[l]; {&<}*4D  
int b = temp[r]; k0YsAa#6V  
for (i = l, j = r, k = l; k <= r; k++) { 1tr>D:c\  
if (a < b) { )R +o8C  
data[k] = temp[i++]; sTA/2d  
a = temp; =3zn Ta }  
} else { u:S@'z>  
data[k] = temp[j--]; XOeh![eMX  
b = temp[j]; hv"toszj\  
} 6>L.)V  
} tZ@ +18  
} z1FbW&V  
Qr<%rU^{.  
/** I| j tpv}  
* @param data R^2Uh$kk{A  
* @param l )>Q 2G/@  
* @param i dq8 /^1P  
*/ p;7 4 +q  
private void insertSort(int[] data, int start, int len) { kR6 t .  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); v\Wm[Ld  
} y[zA [H:  
} &53#`WgJ  
} V- cuG.  
} #pe{:f?  
mWusRgj+8  
堆排序: OhW=F2OIV  
8@fDn(]w  
package org.rut.util.algorithm.support; O9|'8"AF  
epR~Rlw>2  
import org.rut.util.algorithm.SortUtil; @1@q6@9Tu  
0`P]fL+&  
/** 7XDV=PQ[  
* @author treeroot Gtg)%`  
* @since 2006-2-2 KyyG8;G%  
* @version 1.0 ,Mhe:^3  
*/ gZjOlp  
public class HeapSort implements SortUtil.Sort{ ob] lCX)  
g& "(- :  
/* (non-Javadoc) |x6mkSf]ke  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]v{fFmL  
*/ NVj J/  
public void sort(int[] data) { }m9LyT=~$  
MaxHeap h=new MaxHeap(); ;/V@N |$n  
h.init(data); N-rm k  
for(int i=0;i h.remove(); Z0=m:h  
System.arraycopy(h.queue,1,data,0,data.length); L, {rMLM%  
} Y/S3)o  
2*citB{  
private static class MaxHeap{ X?6h>%) k  
VU/W~gb4"A  
void init(int[] data){ IPO[J^#Me  
this.queue=new int[data.length+1]; O8r"M8  
for(int i=0;i queue[++size]=data; ^)q2\ YE;  
fixUp(size); (J*w./  
} UPKi/)C;  
} 7rSUSra  
(oXN>^-D  
private int size=0; lk +K+Ra/  
DVhTb  
private int[] queue; 1qC:3 ;P  
%]ayW$4  
public int get() { R1.sq(z`  
return queue[1]; &#@>(u: .  
} i$ L]X[  
eU koVr   
public void remove() {  j/9QV  
SortUtil.swap(queue,1,size--); KupMndK  
fixDown(1); CjQ"oQw  
} 5FSv"=  
file://fixdown , Ln   
private void fixDown(int k) { Tq84Fn!HJ>  
int j; T'M66kg  
while ((j = k << 1) <= size) { Q==v!"Gi|  
if (j < size %26amp;%26amp; queue[j] j++; jAK{<7v4U  
if (queue[k]>queue[j]) file://不用交换 #tZf>zrs  
break; A'( 7VJ  
SortUtil.swap(queue,j,k); u 7"VeTz  
k = j; Tj=dL  
} _GO+fB/Q1  
} u`pROd/ R5  
private void fixUp(int k) { 8A:^K:Q  
while (k > 1) { e5ru:#P.p  
int j = k >> 1; *>'2$me=  
if (queue[j]>queue[k]) cHL]y0>  
break; sJb)HQ,7x  
SortUtil.swap(queue,j,k); DAnb.0  
k = j; [tqO}D  
} jRG\C=&(x  
} kz0=GKic  
2Nn1-wdhb  
} 9>Uq$B  
.H^P2tp  
} ch>Vv"G>  
90T%T2K  
SortUtil: yIIETE  
oM<!I0"gC+  
package org.rut.util.algorithm; A*;?U2  
cVay=5].  
import org.rut.util.algorithm.support.BubbleSort; -@L's{J{M  
import org.rut.util.algorithm.support.HeapSort; ?Hi}nsw  
import org.rut.util.algorithm.support.ImprovedMergeSort; sc8DY!|OYN  
import org.rut.util.algorithm.support.ImprovedQuickSort; CofH}-  
import org.rut.util.algorithm.support.InsertSort; ns#~}2"d  
import org.rut.util.algorithm.support.MergeSort; _Dj<Eu_  
import org.rut.util.algorithm.support.QuickSort; 23-t$y]  
import org.rut.util.algorithm.support.SelectionSort; &G/|lv>j  
import org.rut.util.algorithm.support.ShellSort; u<]mv  
XocsSs  
/** f>r3$WKj  
* @author treeroot rer|k<k;]G  
* @since 2006-2-2 voV:H[RD9  
* @version 1.0 \V^*44+ <!  
*/ jJVT_8J  
public class SortUtil { &$c5~9p\B  
public final static int INSERT = 1; 7':f_]  
public final static int BUBBLE = 2; h}|6VJ@.  
public final static int SELECTION = 3; |qlS6Aln  
public final static int SHELL = 4; 8lOI\-  
public final static int QUICK = 5; w,Z" W;|  
public final static int IMPROVED_QUICK = 6; 6<Z*Tvk{C  
public final static int MERGE = 7; PXosFz~  
public final static int IMPROVED_MERGE = 8; S= -M3fP~  
public final static int HEAP = 9; V5a?=vK9  
sS2_-X[_  
public static void sort(int[] data) { vUYJf99B  
sort(data, IMPROVED_QUICK); SFn 3$ rh  
} 8?7kIin  
private static String[] name={ 3Q"F(uE v^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .G}k/`a  
}; w< 65S  
PW%1xHLfk  
private static Sort[] impl=new Sort[]{ b,sGq  
new InsertSort(), WRD A `  
new BubbleSort(), 2@ 9pr  
new SelectionSort(), W|dpFh`  
new ShellSort(), fw' r.  
new QuickSort(), MBB5wj  
new ImprovedQuickSort(), r219M)D?  
new MergeSort(), s>|Z7[*  
new ImprovedMergeSort(), 0e+W/Tq  
new HeapSort() >5;N64]!)  
}; Y{Da+  
sEce{"VC  
public static String toString(int algorithm){ z2w;oM$g  
return name[algorithm-1]; 'y9*uT~  
} \sK:W|yy  
5vTv$2@  
public static void sort(int[] data, int algorithm) { U:]MgZWn  
impl[algorithm-1].sort(data); AkrTfi4hC  
} ZXsYn  
QsF4Dl   
public static interface Sort { p9-0?(]  
public void sort(int[] data); M8';%  =@  
} G#H9g PY  
bD35JG^&i  
public static void swap(int[] data, int i, int j) { RF_[?O)Q  
int temp = data; X JY5@I.  
data = data[j]; ^qxdmMp)l  
data[j] = temp; A&?}w_|9  
} x;]x_f z  
} Ge~q3"  
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