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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。 ahoh9iJ  
插入排序: 8!6<p[_  
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package org.rut.util.algorithm.support; bXm :]?  
g`{Dxb,t  
import org.rut.util.algorithm.SortUtil; #mTMt;x  
/** Ctj8tK$D  
* @author treeroot )+k[uokj  
* @since 2006-2-2 5Q;dnC  
* @version 1.0 [wIKK/O  
*/ -g$O OJB6  
public class InsertSort implements SortUtil.Sort{ { "}+V`O{  
7(5]Ry:  
/* (non-Javadoc) yHtGp%j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QS%,7'EG  
*/ wK ][qZ ]  
public void sort(int[] data) { =%)})  
int temp; @|]iSD&T #  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gpsrw>nw  
} B~4mk  
} B,:23[v  
} -MUQ \pZ  
Ol_/uy1r[  
} Tu'E{Hw  
+E)e1 :8  
冒泡排序: `^`9{@~  
2}>go^#O/w  
package org.rut.util.algorithm.support; 8}J(c=4Gk  
.8%vd  
import org.rut.util.algorithm.SortUtil; d^_itC;-,  
f0g6g!&gf  
/** ju r1!rg%  
* @author treeroot V3%Krn1'  
* @since 2006-2-2 k\%,xf; x  
* @version 1.0 a\Tr!Be,  
*/ bL#sn_(m  
public class BubbleSort implements SortUtil.Sort{ J;7s/YH^  
@b8X%0B7  
/* (non-Javadoc) ScsWnZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EqYz,%I%  
*/ |#!eMJ&0  
public void sort(int[] data) { $kM '  
int temp; s%hU*^ 8  
for(int i=0;i for(int j=data.length-1;j>i;j--){ e|35|I '  
if(data[j] SortUtil.swap(data,j,j-1); \}n !yYh(  
} {W]bU{%.  
} v5P*<U Ax  
} /1H9z`qV  
} rn[$x(G  
,WzG.3^m  
} `s#sE.=o  
]9dx3<2_I  
选择排序: t4C<#nfo  
(xjqB{U  
package org.rut.util.algorithm.support; 6MrZ6dz^  
#R5we3&p  
import org.rut.util.algorithm.SortUtil; |2[S/8g!  
^7J~W'hI  
/** 5+J 64_  
* @author treeroot t*5z1T?  
* @since 2006-2-2 z0=Rp0_W  
* @version 1.0 rwasH,+  
*/ Sa( yjF1  
public class SelectionSort implements SortUtil.Sort { z%++\.g_  
X!7 c zt  
/* Omp i~  
* (non-Javadoc) 6@*5! ,  
* (9Fabo\SH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F]/L!   
*/ 1kbT@  
public void sort(int[] data) { f%`*ba" v  
int temp; ^uKnP>*l  
for (int i = 0; i < data.length; i++) { 8Pl+yiB/o`  
int lowIndex = i; ]Y?{$M G  
for (int j = data.length - 1; j > i; j--) { ocb%&m ;i  
if (data[j] < data[lowIndex]) { !hwzKm=%N  
lowIndex = j; -G(3Y2  
} l{M;PaJ`}  
} Kx(76_XD  
SortUtil.swap(data,i,lowIndex); tn(?nQN3  
} D|u^8\'.  
}  PU,6h}  
V[BY/<z)A  
} H5 p}Le  
V)_H E  
Shell排序: [8B tIv  
]}UeuF\  
package org.rut.util.algorithm.support; u=_bM2;~Z  
yEMX`  
import org.rut.util.algorithm.SortUtil; !D.= 'V  
i}v}K'`  
/** 7.w *+Z>z  
* @author treeroot *u:;:W&5y  
* @since 2006-2-2 lGD%R'}  
* @version 1.0 1(#*'xR  
*/ BXQ\A~P\  
public class ShellSort implements SortUtil.Sort{ fxLE]VJQ  
X|lElN  
/* (non-Javadoc) {[YqGv=fF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R=#q"9qz  
*/ f.U0E6-(3N  
public void sort(int[] data) { z 'vdC  
for(int i=data.length/2;i>2;i/=2){ Tx|SAa=V  
for(int j=0;j insertSort(data,j,i); s$SU vo1J  
} XvfcPI6  
} q\ \8b{~  
insertSort(data,0,1); tEpIyC  
} N'lGA;}i  
N(:EK  
/** A{DIp+  
* @param data WI*^+E&=*  
* @param j -dc"N|.  
* @param i lOWB^uS%  
*/ c<JM1  
private void insertSort(int[] data, int start, int inc) { KZp,=[t  
int temp; o=QRgdPD  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xdFP$Y~ogy  
} l`~a}y"n  
} Z>>gXh<e[  
} 8|S1|t,  
! 4qps$p{  
} p[af[!  
:>AW@SoTp  
快速排序: q:EzKrE  
=:CGl   
package org.rut.util.algorithm.support; v;N1'  
LP0;n\  
import org.rut.util.algorithm.SortUtil; eCPKpVhP  
!R] CmK  
/** Kd ryl   
* @author treeroot jFJW3az@z  
* @since 2006-2-2 ?:{0  
* @version 1.0 mCC:}n"#  
*/ "2vNkO##  
public class QuickSort implements SortUtil.Sort{ =hOj8;2  
A/Fs?m{7U  
/* (non-Javadoc) -6em*$k^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `ohF?5J,  
*/ do?S,'(g  
public void sort(int[] data) { (:j+[3Ht  
quickSort(data,0,data.length-1); +_-)0[+p  
} BW;=i.  
private void quickSort(int[] data,int i,int j){ ( TbB?X}  
int pivotIndex=(i+j)/2; ||*&g2Y  
file://swap A^= Hu,"e  
SortUtil.swap(data,pivotIndex,j); U:pLnNp`  
fRv S@  
int k=partition(data,i-1,j,data[j]); :) Fp B"  
SortUtil.swap(data,k,j); YQB]t=Ha  
if((k-i)>1) quickSort(data,i,k-1); Q J(e*/  
if((j-k)>1) quickSort(data,k+1,j); YfrTvKX  
4? /ot;>2  
} 0?&aV_:;X  
/** a\[fC=]r:  
* @param data w7`@=kVx  
* @param i p)[ BB6E  
* @param j "$,}|T?Y`  
* @return NBbY## w0  
*/ @tjZvRtZ  
private int partition(int[] data, int l, int r,int pivot) { 2o s6c te  
do{ )z*$`?)k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7Y @=x#  
SortUtil.swap(data,l,r); )l[7;ZIw$  
} Vbqm]2o&  
while(l SortUtil.swap(data,l,r); $S)e"Po~5  
return l; qhn&;{{  
} <5!RAdaj+  
-f|+  
} ( F"& A?  
^RF mRn  
改进后的快速排序: u%gm+NneK  
?:;hTY  
package org.rut.util.algorithm.support; fAY2V%Rft  
[ ;3EzZL  
import org.rut.util.algorithm.SortUtil; $.3CiM }~  
z*k 3q`=>  
/** Ie`SWg*WL  
* @author treeroot Y(G*Yi?;  
* @since 2006-2-2 O7<V@GL+  
* @version 1.0 C Sk  
*/ >{LJ#Dc6  
public class ImprovedQuickSort implements SortUtil.Sort { m|?" k38  
5@%=LPV  
private static int MAX_STACK_SIZE=4096; g8iB;%6  
private static int THRESHOLD=10; /kviO@jm4(  
/* (non-Javadoc) $Zu4tuXA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7PQj7&m  
*/ g)r ,q&*  
public void sort(int[] data) { wHN` - 5%  
int[] stack=new int[MAX_STACK_SIZE]; onJ[&f  
P". qL 5  
int top=-1; $nD k mKl  
int pivot; dPdHY&#`  
int pivotIndex,l,r; I!0$% ]F  
EJ &ZZg  
stack[++top]=0; n.H`1@  
stack[++top]=data.length-1; Kjca>/id  
in;+d~?  
while(top>0){ `v/tf|v 6  
int j=stack[top--]; eQ)ioY  
int i=stack[top--]; [9W&1zY  
3bI|X!j  
pivotIndex=(i+j)/2; '$L= sH5  
pivot=data[pivotIndex]; <&m  
B=RKi\K6a  
SortUtil.swap(data,pivotIndex,j); /*R' xBr  
G3?a~n^b  
file://partition s)7`r6w  
l=i-1; )dN,b( w9  
r=j; 8KdcLN@  
do{  d7-F&!sQ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  ;;"c+  
SortUtil.swap(data,l,r); 5A=xFj{  
} !E>3N:  
while(l SortUtil.swap(data,l,r); "F.J>QBd  
SortUtil.swap(data,l,j); O 9 Au =  
HIp {< M3  
if((l-i)>THRESHOLD){ Rx"VscB6z  
stack[++top]=i; fS$Yl~-m?  
stack[++top]=l-1; $;`2^L  
} U-^S<H  
if((j-l)>THRESHOLD){ P@T $6%~  
stack[++top]=l+1; /7HIL?r  
stack[++top]=j; fO}1(%}d  
} W,oV$ s^  
wCEfR!i  
} +VI0oo {Z  
file://new InsertSort().sort(data); wYxFjXm  
insertSort(data); >8HRnCyp/  
} +w}%gps  
/** (S93 %ii  
* @param data Z YO/'YW  
*/ =VI`CBQ/Um  
private void insertSort(int[] data) { E":":AC#  
int temp; !Q/O[6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z.Y8z#[xg  
} HBkQ`T  
} 9mtC"M<   
} o>k-~v7  
@P*P8v8:  
} ).#D:eO[~  
%;XuA*e  
归并排序: $,@ +Ua  
=|t1eSzc  
package org.rut.util.algorithm.support; JU`'?b  
XXdMppoR  
import org.rut.util.algorithm.SortUtil; I Y-5/  
:95_W/l  
/** -8J@r2\  
* @author treeroot mp$II?hZ*  
* @since 2006-2-2 Rn ^N+3o'M  
* @version 1.0 Mh B=+S[@  
*/ ?=o]Wx0(9  
public class MergeSort implements SortUtil.Sort{ HOI`F3#XI  
sN/Xofh  
/* (non-Javadoc) '$nGtB5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -kS5mR  
*/ .\\#~r`t3  
public void sort(int[] data) { /]58:euR  
int[] temp=new int[data.length]; G!lykk]  
mergeSort(data,temp,0,data.length-1); /u1zRw  
} GnHf9 JrR  
W${sD|d-  
private void mergeSort(int[] data,int[] temp,int l,int r){ BHBR_7  
int mid=(l+r)/2; n6+M qN  
if(l==r) return ; 8pKPbi;(2  
mergeSort(data,temp,l,mid); !Dn1 pjxc  
mergeSort(data,temp,mid+1,r); |&*rSp2iH  
for(int i=l;i<=r;i++){ _5 -"<  
temp=data; e/~<\  
} wA+4:CF @  
int i1=l; VFp)`+8  
int i2=mid+1; )n61IqrW  
for(int cur=l;cur<=r;cur++){ fH{$LjH(  
if(i1==mid+1) xo3)ds X  
data[cur]=temp[i2++]; X7!A(q+h  
else if(i2>r) *VAi!3Rx;  
data[cur]=temp[i1++]; "@bk$o=  
else if(temp[i1] data[cur]=temp[i1++]; b<MMli  
else os+wTUR^  
data[cur]=temp[i2++]; dKG<"  
} j>=".^J  
} b8Ad*f\  
`l@t3/  
} h.%Qn vL  
vYun^(_-  
改进后的归并排序: m#(x D~V  
q"vT]=Y}:  
package org.rut.util.algorithm.support; o{,(`o.1O  
438> )=  
import org.rut.util.algorithm.SortUtil; _e^V\O>  
C'"6@-~  
/** 5{=MUU=  
* @author treeroot gU$3Y#R  
* @since 2006-2-2 qt)mUq;>  
* @version 1.0 sMo%Ayes  
*/ Wsz9X;  
public class ImprovedMergeSort implements SortUtil.Sort { rJ*WxOoS{  
C!A_PQ2y  
private static final int THRESHOLD = 10; 6!V* :.(  
jF0BWPL  
/* -Euy5Y  
* (non-Javadoc) +4RaN`I  
* <AXYqH7%A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v:ZD}Q_  
*/ Lg53 Ms%  
public void sort(int[] data) { <0MUn#7'  
int[] temp=new int[data.length]; Kn]WXc|("  
mergeSort(data,temp,0,data.length-1); hj[g2S%X  
} }e6:&`a xD  
l0,O4k2'  
private void mergeSort(int[] data, int[] temp, int l, int r) { Z ISd0hV  
int i, j, k; ]5L3[A4Vu  
int mid = (l + r) / 2; ;#Nci%<J\  
if (l == r) =1uI >[aN  
return; Np)!23 "  
if ((mid - l) >= THRESHOLD) {RO=4ba{J  
mergeSort(data, temp, l, mid); &}?e:PEy  
else nhxl#  
insertSort(data, l, mid - l + 1); tt91)^GdYa  
if ((r - mid) > THRESHOLD) od|.E$B  
mergeSort(data, temp, mid + 1, r); vDL/PXNC  
else Q?q m~wD  
insertSort(data, mid + 1, r - mid); m]vr|:{6/  
Sy~Mh]{E  
for (i = l; i <= mid; i++) { IT"jtV  
temp = data;  EZFWxR/  
} YDL)F<Y  
for (j = 1; j <= r - mid; j++) { [O'p&j@  
temp[r - j + 1] = data[j + mid]; Melc -[  
} r3)t5P*_  
int a = temp[l]; U3QnWPt}>  
int b = temp[r]; O*7~t17  
for (i = l, j = r, k = l; k <= r; k++) { ;RYKqUE  
if (a < b) { C$; ~=  
data[k] = temp[i++]; EtG)2)  
a = temp; 1gr jK.x  
} else { gr7_oJ:R  
data[k] = temp[j--]; &0TheY;srf  
b = temp[j]; K!mgh7Dx  
} ' ga2C\)  
} 5sUnEHN  
} =Ch#pLmH  
$<#sCrNX  
/** }2{#=Elh  
* @param data XUHY.M  
* @param l _Fjv.VQ,  
* @param i >a K&T"  
*/  Q.yoxq  
private void insertSort(int[] data, int start, int len) { e%\KI\u  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); AJ}Q,E  
} ~>|U%3}]  
} "/=x u|  
} WBdb[N6\  
} K} @:>;* 9  
pcG q  
堆排序: l+,rc*-j0  
X35hLp8 M  
package org.rut.util.algorithm.support; h:wD &Fh8  
[%y D,8  
import org.rut.util.algorithm.SortUtil; )*B.y|b #  
r+crE %-  
/** UK/k?0  
* @author treeroot C09@2M'  
* @since 2006-2-2 5=\b+<pE  
* @version 1.0 R!ij CF\  
*/ |V5H(2/nk  
public class HeapSort implements SortUtil.Sort{ aDESO5  
V7<} ;Lzm  
/* (non-Javadoc) ,q1RJiR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FE.:h'^h  
*/ ZhU2z*qN#  
public void sort(int[] data) { }^t?v*kcA  
MaxHeap h=new MaxHeap(); jw)t"S/E  
h.init(data); Q]C1m<x  
for(int i=0;i h.remove(); l0f6Lxfz  
System.arraycopy(h.queue,1,data,0,data.length); $I%]jAh6  
} .*{LPfD|  
YDJc@*D  
private static class MaxHeap{ !% Md9Mu!o  
pe8MG(V  
void init(int[] data){ GzX@Av$  
this.queue=new int[data.length+1]; :1Ay_ b_J  
for(int i=0;i queue[++size]=data; z!tHn#  
fixUp(size); (msJ:SG  
} "A7tb39*  
} tQ"PCm  
P_}$|zj7  
private int size=0; xfilxd  
3mWN?fC  
private int[] queue; G9jtL$}E<  
dJk.J9Z  
public int get() { ^B<jMt  
return queue[1]; :hr%iu  
} \VW.>@s~  
IlY,V  
public void remove() { f-PDgs   
SortUtil.swap(queue,1,size--); q;+qIV&.:  
fixDown(1); };|'8'5  
} 'yl`0,3wV  
file://fixdown iVA_a8}  
private void fixDown(int k) {  )57OZ  
int j; Z"A:^jZ<s  
while ((j = k << 1) <= size) { /}V9*mD2  
if (j < size %26amp;%26amp; queue[j] j++; )<+Z,6  
if (queue[k]>queue[j]) file://不用交换 r(RJ&\ !  
break; |oX l+&u  
SortUtil.swap(queue,j,k); qzq>C"z\Y$  
k = j; 0@2%pIq\  
} r*$KF!-dg  
} =^6]N~*,D  
private void fixUp(int k) { M C>{I3  
while (k > 1) { L_/.b%0)  
int j = k >> 1; F4*f_lP  
if (queue[j]>queue[k]) l-5-Tf&j  
break; Yk }zN_v  
SortUtil.swap(queue,j,k); I;=}@]9  
k = j; p0b&CrALx  
} 7:]I@Gc'  
} u4%-e )$X  
-)w/nq  
} avdi9!J2  
rLp0VKPe  
} B4|3@X0(  
- iU7'  
SortUtil: )V3G~p=0  
kIQMIL0+  
package org.rut.util.algorithm; Xf:-K(%e  
bBGLf)fsTG  
import org.rut.util.algorithm.support.BubbleSort; WKP=[o^  
import org.rut.util.algorithm.support.HeapSort; iidK}<o  
import org.rut.util.algorithm.support.ImprovedMergeSort; =*t)@bn  
import org.rut.util.algorithm.support.ImprovedQuickSort; rN OwB2e  
import org.rut.util.algorithm.support.InsertSort; =5+:<e,&  
import org.rut.util.algorithm.support.MergeSort; M}HGFN  
import org.rut.util.algorithm.support.QuickSort; xHHG| u  
import org.rut.util.algorithm.support.SelectionSort; U4%P0}q/  
import org.rut.util.algorithm.support.ShellSort; o;}o"-s  
By%aTuV$  
/** LFtnSB8  
* @author treeroot [<6ez;2q'  
* @since 2006-2-2 ~Xa >;  
* @version 1.0 " @.hz@>  
*/ r"^P>8  
public class SortUtil { i9$ -lk  
public final static int INSERT = 1; B \BP:;"  
public final static int BUBBLE = 2; yYF%U7N/n  
public final static int SELECTION = 3; I~EJctOG  
public final static int SHELL = 4; s(-$|f+s  
public final static int QUICK = 5; x-cg df  
public final static int IMPROVED_QUICK = 6; L_O m<LO2  
public final static int MERGE = 7; =ayl~"bW  
public final static int IMPROVED_MERGE = 8; r-=#C1eY&  
public final static int HEAP = 9; g+U6E6}1  
UkeX">  
public static void sort(int[] data) { A+>+XA'  
sort(data, IMPROVED_QUICK); pLNv\M+  
} FK>8(M/  
private static String[] name={ 7N 7W0Ky  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 90 (JP-  
}; z" 4$mh  
[WuN?H  
private static Sort[] impl=new Sort[]{ -:Yx1Y3 [  
new InsertSort(), y3 kXfSe  
new BubbleSort(), 0rooL<~fa  
new SelectionSort(), _>0 I9.[5  
new ShellSort(), KftZ ^mk+p  
new QuickSort(), uK1DC i  
new ImprovedQuickSort(), .*i.Z   
new MergeSort(), l.El3+  
new ImprovedMergeSort(), (6!W8x7  
new HeapSort() /GqW1tcO  
}; >,7 -cm=.  
,x&T8o/a  
public static String toString(int algorithm){ _I+QInD;)  
return name[algorithm-1]; [Q6PFdQ_JT  
} VI/77  
$zKf>[K  
public static void sort(int[] data, int algorithm) { RX\%R  
impl[algorithm-1].sort(data); Igrr"NuDZ  
} 2XNO*zbve  
a/ ^ojn  
public static interface Sort { 3P N<J  
public void sort(int[] data); %xPJJ $P  
} 7\HjQ7__  
:;HJ3V;  
public static void swap(int[] data, int i, int j) { t,Ss3  
int temp = data; `B-jwVrN(  
data = data[j]; Z7J8%ywQ  
data[j] = temp; K+p7yZJ  
} f@rR2xZoQ  
} }Ox5,S}ra  
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