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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。 0bl?dOV{  
插入排序: Gr),o6}p  
#N?VbDK9_  
package org.rut.util.algorithm.support; WQJnWe   
8^ ujA  
import org.rut.util.algorithm.SortUtil; >cTSX  
/** vYPZVqF_$  
* @author treeroot pXoD*o b  
* @since 2006-2-2 |c<h& p  
* @version 1.0 j aU.hASj  
*/ eYpK!9  
public class InsertSort implements SortUtil.Sort{ ;2k!KW@  
l;~b:[r  
/* (non-Javadoc) K*QRi/O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /h(bMbZ  
*/ tg R4C#a   
public void sort(int[] data) { H Q_IQ+  
int temp; io[>`@=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F|wT']1Y  
} _HAtTW  
} nT:F{2 M;  
} D\4pLm"!v  
d,5,OJY2f  
} es6]c%o:t^  
oAxRI+&|.  
冒泡排序: X-_ $jKfM  
P9W!xvV`w  
package org.rut.util.algorithm.support; 4#Bzq3,|  
5qL;@Y  
import org.rut.util.algorithm.SortUtil; 75"&"*R/*G  
Clo}kdkd_  
/** .FdzEauVc  
* @author treeroot {hH8+4c7  
* @since 2006-2-2 yADX^r(  
* @version 1.0 3+4U?~^k*  
*/ Y(/y,bJ?jp  
public class BubbleSort implements SortUtil.Sort{ <9/?+)  
*km!<L7Y  
/* (non-Javadoc) wZsjbNf`K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uE ^uP@d  
*/ Yma-$ytp  
public void sort(int[] data) { 0 /)OAw"m  
int temp; wlEmy.)H  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?~9o2[  
if(data[j] SortUtil.swap(data,j,j-1); i$g6C  
} p;<aZ&@O  
} b^'>XT~1J&  
} ai]KH7  
} (v0i]1ly[  
\GdsQAF"  
} C>*1f|<  
m0,TH[HWGF  
选择排序: U}<'[o V  
9!,f4&G`  
package org.rut.util.algorithm.support; FfM,~s<Efz  
dk_! ~Z  
import org.rut.util.algorithm.SortUtil; IWT -)+  
 q!as~{!  
/** M=sGPPj  
* @author treeroot 303x|y  
* @since 2006-2-2 Kwo0%2Onkd  
* @version 1.0 @ [<B:Tqo  
*/ <y<   
public class SelectionSort implements SortUtil.Sort { l}XnCOIT,  
jMP;$w  
/* .|/VD'xV"  
* (non-Javadoc) <.U(%`|  
* +<^c2diX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |!xqkmX  
*/ `##^@N<P  
public void sort(int[] data) { 8S@"6TG`  
int temp; '^`%  
for (int i = 0; i < data.length; i++) { ;tWi4iT+.  
int lowIndex = i; rds0EZ4W  
for (int j = data.length - 1; j > i; j--) { e[g.&*!  
if (data[j] < data[lowIndex]) { G8@LH   
lowIndex = j; -"x25~k!?F  
} MNH-SQB|  
} ;*>':-4  
SortUtil.swap(data,i,lowIndex); Df}3^J~JX  
} >]/aG!  
} N3&n"w _d  
DC,]FmWs!+  
} ?dQ#%06mn  
PHg(O:3WG  
Shell排序: o(Q='kK  
`m\l#r 2C  
package org.rut.util.algorithm.support; N3|aNQ=X0  
AfJ.SNE  
import org.rut.util.algorithm.SortUtil; 0Rz",Mu>  
1V;m8)RF  
/** Rqun}v}  
* @author treeroot #QKgY7  
* @since 2006-2-2 [OwrIL  
* @version 1.0 f4+}k GJN  
*/ ]MRQcqbpqL  
public class ShellSort implements SortUtil.Sort{ $m0-IyXcv  
0T<DHPQ1  
/* (non-Javadoc) sXR}#*8p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G~19Vv*;  
*/ eS;W>d  
public void sort(int[] data) { 1l+j^Dt'[  
for(int i=data.length/2;i>2;i/=2){ 1fcyGZq  
for(int j=0;j insertSort(data,j,i); b)+;@wa~  
} z{G@t0q  
} i&zJwUr(<  
insertSort(data,0,1); Wfj*)j Q  
} 3R[,,WAj$  
H JjW  
/** (!dwUB  
* @param data G/?j$T  
* @param j ka[%p,H  
* @param i @^K_>s9B  
*/ \++#adN:K  
private void insertSort(int[] data, int start, int inc) { X{;3gN  
int temp; (0QYX[(r~o  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);  nCSXvd/  
} }OLBEhGs  
} XFcIBWS  
} k+As#7V  
t zSg`7H!  
} -% g{{'9B  
o>ZlA3tv  
快速排序: "jAEZ  
#{Gojg`5O  
package org.rut.util.algorithm.support; g TqtTd~L  
N0']t Gh2  
import org.rut.util.algorithm.SortUtil; m|cT)-  
tC'@yX  
/** ^|h})OHV  
* @author treeroot DX4"}w  
* @since 2006-2-2 he1OLk  
* @version 1.0 *Q:EICDE7  
*/ U\`H0'  
public class QuickSort implements SortUtil.Sort{ O{44GB3  
q NE( @at  
/* (non-Javadoc) .5YIf~!59  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P1}Fn:Xe%7  
*/ Vv5#{+eT;  
public void sort(int[] data) { pk2}]jx"  
quickSort(data,0,data.length-1); S1a}9Z|  
} xN]88L}Tn  
private void quickSort(int[] data,int i,int j){ 1F58 2 l  
int pivotIndex=(i+j)/2; 2Uq4PCx!  
file://swap U{~R39  
SortUtil.swap(data,pivotIndex,j); _+x&[^gjP  
o9D]\PdL>  
int k=partition(data,i-1,j,data[j]); 'CC;=@J  
SortUtil.swap(data,k,j); nLv"ON~  
if((k-i)>1) quickSort(data,i,k-1); yct^AN|%  
if((j-k)>1) quickSort(data,k+1,j); /Jw 65 e  
<-m?l6  
} uZ7~E._  
/** 0G"I}Jp{  
* @param data ]aVFWzey  
* @param i d!]fou  
* @param j V;t8v\  
* @return /?Fa<{  
*/ b|z_1j6U  
private int partition(int[] data, int l, int r,int pivot) { J#tY$PE  
do{ U,)@+?U+h  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~}F$1;t0  
SortUtil.swap(data,l,r); #.z`clK#  
} ;~5w`F)  
while(l SortUtil.swap(data,l,r); }^Kye23  
return l; STH?X] /  
} qX?k]m   
`VxfAV?}  
} d)X6x-(  
d %Z+.O  
改进后的快速排序: CUo %i/R  
"vnWq=E 2  
package org.rut.util.algorithm.support; _LUTIqlvi  
msiftP.  
import org.rut.util.algorithm.SortUtil; k4ijWo{:0  
  S9Ka  
/** zIjUfgO/M  
* @author treeroot :~1p  
* @since 2006-2-2 +8etCx  
* @version 1.0 PgYq=|]`  
*/ I%<,JRAV  
public class ImprovedQuickSort implements SortUtil.Sort { L_WVTz?`  
G[=8Ko0U+n  
private static int MAX_STACK_SIZE=4096; nQW`X=Ku  
private static int THRESHOLD=10; |p7k2wzN  
/* (non-Javadoc) h"~GaI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R0!qweGi@  
*/ 7iJ=~po:o  
public void sort(int[] data) { 7f9i5E1  
int[] stack=new int[MAX_STACK_SIZE]; ZHku3)V=o  
`]xot8  
int top=-1; %7*Y@k-)o  
int pivot; 5%E.UjC  
int pivotIndex,l,r; 47c` ) *Hc  
^,.G<2Kx&  
stack[++top]=0; d=B DR^/wA  
stack[++top]=data.length-1; iqj ZC80  
I3ZbHb-)_,  
while(top>0){ >^Zyls  
int j=stack[top--]; )~X*&(7RR}  
int i=stack[top--]; O]Mz1 ev|  
'<YVDB&-d,  
pivotIndex=(i+j)/2; Tpv]c  
pivot=data[pivotIndex]; 9-9:]2~g!  
cNd2XQB9=  
SortUtil.swap(data,pivotIndex,j); n^7$ST#'bV  
4l~0LdYXKm  
file://partition xgeKz^,  
l=i-1; 75pz' Cb  
r=j; H8}}R~ZO  
do{ )@]Y1r4U  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <2Qh5umQ  
SortUtil.swap(data,l,r); ;uC +5g`  
} +'NiuN  
while(l SortUtil.swap(data,l,r); ;i2N`t2  
SortUtil.swap(data,l,j); nPj+mg  
8'(|1  
if((l-i)>THRESHOLD){ |H)WJ/`  
stack[++top]=i; N8>;BHBV!  
stack[++top]=l-1; ktr l|  
} I=,u7w`m  
if((j-l)>THRESHOLD){ ,DT =(  
stack[++top]=l+1; cQaEh1n  
stack[++top]=j; W~1MeAI  
} GoGo@5n(Z  
i*JbFukG  
} Q7]VB p4  
file://new InsertSort().sort(data); }Dig'vpMx  
insertSort(data); btC.EmX  
} 1z\>>N$7B  
/** T F!Lp:  
* @param data IJ%S[>  
*/  jJjD)  
private void insertSort(int[] data) { *Iu .>nw  
int temp; Zh WtY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); # Z*nc0C  
} 4K@`>Y5g*  
}  psg}sl/  
} 9 xvE?8;M#  
q1nGj  
} 'ErtiD  
o 6$Q>g`]  
归并排序: 3f{%IU(z  
J!QzF)$4J  
package org.rut.util.algorithm.support; 7]q$ sQ  
FshQ OFW  
import org.rut.util.algorithm.SortUtil; z90=,wd  
Q-[^!RAK?  
/** ~lR"3z_Z}  
* @author treeroot &pZUe`3  
* @since 2006-2-2 9^m&  [Z  
* @version 1.0 `nO!_3  
*/ -4p^wNR  
public class MergeSort implements SortUtil.Sort{ 1u\fLAXn  
.&ynS  
/* (non-Javadoc) h-1eDxK6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  _"ysJ&  
*/ \jdpL1  
public void sort(int[] data) { EiY i<Z_S  
int[] temp=new int[data.length]; urHQb5|T}  
mergeSort(data,temp,0,data.length-1); 13]sZ([B%|  
} )>)_>[  
K%<Z"2!+  
private void mergeSort(int[] data,int[] temp,int l,int r){ <!\J([NM8  
int mid=(l+r)/2; Riq5Au?*)  
if(l==r) return ; I3xx}^V  
mergeSort(data,temp,l,mid); :8;8-c  
mergeSort(data,temp,mid+1,r); a#=GLB_P(  
for(int i=l;i<=r;i++){ w+cI0lj  
temp=data; H ~c+L'=  
} {PHxm  
int i1=l; ybtje=3E  
int i2=mid+1; }6P]32d  
for(int cur=l;cur<=r;cur++){ /q %TjQ}F  
if(i1==mid+1) .E_`*[ 5=  
data[cur]=temp[i2++]; K \}xb2s  
else if(i2>r) _Gy*";E  
data[cur]=temp[i1++]; '}c0:,5  
else if(temp[i1] data[cur]=temp[i1++]; t_YiF%}s&#  
else 3\FiQ/?  
data[cur]=temp[i2++]; ;o\0:fzr  
} [IxZweK  
} #(@dN+  
1$fA9u$  
} apUV6h-v  
mp~\ioI*d  
改进后的归并排序: ushQWP)  
$Q|66/S^  
package org.rut.util.algorithm.support; Nuk\8C  
FuaGr0]  
import org.rut.util.algorithm.SortUtil; EOV<|WF>  
=o=)EU{~  
/** =,I,K=+_x  
* @author treeroot vKDPg p<j  
* @since 2006-2-2 8oY0?|_Bx  
* @version 1.0 {S\cpCI`  
*/ C+}uH:I'L  
public class ImprovedMergeSort implements SortUtil.Sort { Z{RgpVt  
hNFMuv  
private static final int THRESHOLD = 10; Dw{C_e  
yPm)r2Ck  
/* xYM! mcA  
* (non-Javadoc) SZc6=^$  
* _y`'T;~OY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A0S6 4(  
*/ 9 4W9P't  
public void sort(int[] data) { -4b9(  
int[] temp=new int[data.length]; Yc#oGCt  
mergeSort(data,temp,0,data.length-1); XaD}J:Xq  
} BZsw(l4/0'  
0;e>kz3o  
private void mergeSort(int[] data, int[] temp, int l, int r) { Cs%'Af  
int i, j, k; Y&k'4Y%  
int mid = (l + r) / 2; 2`t4@T  
if (l == r) x&)P)H0vn  
return; 4MRHz{`wa  
if ((mid - l) >= THRESHOLD) CN: 36  
mergeSort(data, temp, l, mid); <s-_ieW'  
else ? Z8_(e0U  
insertSort(data, l, mid - l + 1); @8 @cpm  
if ((r - mid) > THRESHOLD) >'Nrvy%&0  
mergeSort(data, temp, mid + 1, r); 4|Jy]  
else +S|y)W8  
insertSort(data, mid + 1, r - mid); E](Ood  
w0moC9#$?  
for (i = l; i <= mid; i++) { _}`iLA!$I  
temp = data; y{K~g<VL  
} ? {cF'RB.  
for (j = 1; j <= r - mid; j++) { [ OMcSd|nf  
temp[r - j + 1] = data[j + mid]; 34]f[jJ|  
} ZWmmFKFG.  
int a = temp[l]; BWL~)Hx  
int b = temp[r]; qVJV9n  
for (i = l, j = r, k = l; k <= r; k++) { J_U1eSz<j  
if (a < b) { |!I#T  
data[k] = temp[i++]; ^fS~va  
a = temp; ,_YCl09p(  
} else { LUKdu&M  
data[k] = temp[j--];  UX2`x9  
b = temp[j]; N+!{Bt*  
} -YHlVz  
} ,/:#=TuYm  
} l $d4g?Z  
d'^jek h  
/** |; {wy  
* @param data .'+Tnu(5q  
* @param l $CHr i|  
* @param i 1>57rx"l  
*/ bbiDY  
private void insertSort(int[] data, int start, int len) { $}W=O:L+D  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;% !'K~  
} %S.R@C[3  
} GR O[&;d`  
} +n^$4f  
} Y'bDEdeT  
"=9L7.E)  
堆排序: -UPdgZ_Vxz  
OyZgg(iN  
package org.rut.util.algorithm.support; G+^HZ4jg  
.\{GU9|nO  
import org.rut.util.algorithm.SortUtil; hXbb+j  
N$>g)Ml?  
/** q+e'=0BHd:  
* @author treeroot R(r89bTQ  
* @since 2006-2-2 bNY_V;7Kw`  
* @version 1.0  ~;il{ym  
*/ *Yl9%x]3c  
public class HeapSort implements SortUtil.Sort{ "J%u !~  
<d$|~qS_  
/* (non-Javadoc) LurBqr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h&[]B*BLr  
*/ M<~z=B#  
public void sort(int[] data) { ~naL1o_FZ  
MaxHeap h=new MaxHeap();  ];Bh1  
h.init(data); yXR$MT+~  
for(int i=0;i h.remove(); ^C_Y[i ~|  
System.arraycopy(h.queue,1,data,0,data.length); HWFo9as""v  
} #{UM4~|:  
Y%|f<C)lx2  
private static class MaxHeap{ VoWlBH  
^l7u^j  
void init(int[] data){ 4[Hf[.  
this.queue=new int[data.length+1]; C{-e(G`Yd  
for(int i=0;i queue[++size]=data; . sgV  
fixUp(size); -+#\WB{AI  
} 29 Yg>R!/  
} ^yu0Veypy  
p_) V@ 7  
private int size=0; +VI2i~  
vv"_u=H  
private int[] queue; #l+U(zH:JG  
xQ^zX7  
public int get() {  $3W[fC  
return queue[1]; k^S=i_ U  
} bh3}[O,L A  
u! x9O8y  
public void remove() { +i4S^B/8i  
SortUtil.swap(queue,1,size--); #fRhG^QKp  
fixDown(1); 4nXS}bWf  
} I|n<B"Q6^  
file://fixdown Q(T)s  
private void fixDown(int k) { y5RcJM  
int j; /al(=zf  
while ((j = k << 1) <= size) { @'/\O-  
if (j < size %26amp;%26amp; queue[j] j++; 1<\@i{;xsU  
if (queue[k]>queue[j]) file://不用交换 M0S}-eXc5  
break; pD eqBO  
SortUtil.swap(queue,j,k); ZXFM_>y 5  
k = j; 506B =  
} zVd2kuI&?  
} U_wn/wcLS  
private void fixUp(int k) { S}cpYjnH8  
while (k > 1) { jY(' ?3  
int j = k >> 1; fJH09:@^%  
if (queue[j]>queue[k]) w\:-lXw  
break; :0Rd )*k,v  
SortUtil.swap(queue,j,k); u-qg9qXJb  
k = j; 7(QRG\G#  
} FL,jlE_  
} kBS;SDl)  
g>1yQ  
} |-e*^|  
g G>1  
} 2+s_*zM-  
zy"L%i  
SortUtil: X2}\i5{  
5IOOVYl  
package org.rut.util.algorithm; ` {gkL-  
lQ<2Vw#Yl  
import org.rut.util.algorithm.support.BubbleSort; C5CUMYU  
import org.rut.util.algorithm.support.HeapSort; IgI*mDS&b  
import org.rut.util.algorithm.support.ImprovedMergeSort; j#f+0  
import org.rut.util.algorithm.support.ImprovedQuickSort; N/p9Ws  
import org.rut.util.algorithm.support.InsertSort; 0k@4;BYu  
import org.rut.util.algorithm.support.MergeSort; &BY%<h0c  
import org.rut.util.algorithm.support.QuickSort; ryB^$Kh,,  
import org.rut.util.algorithm.support.SelectionSort; eB%KXPhMm  
import org.rut.util.algorithm.support.ShellSort; AE={P*g  
%g5TU 6WP  
/** w9rwuk  
* @author treeroot h3Nwxj~E  
* @since 2006-2-2 ms{:=L2$$  
* @version 1.0 Kyt.[" p  
*/ 1XSA3;ZEc  
public class SortUtil { & Gp@,t  
public final static int INSERT = 1; A[ 9 @:z  
public final static int BUBBLE = 2; W2D^%;mw  
public final static int SELECTION = 3; CC0@RU  
public final static int SHELL = 4; 5|my}.TR  
public final static int QUICK = 5; J;W(}"cFq  
public final static int IMPROVED_QUICK = 6; gbsRf&4h  
public final static int MERGE = 7; @zL)R b%P$  
public final static int IMPROVED_MERGE = 8; ! @{rk p  
public final static int HEAP = 9; "w9LQ=mW  
W=c7>s0>  
public static void sort(int[] data) { Nwr.mtvh  
sort(data, IMPROVED_QUICK); :3^b>(W.  
} 11glFe  
private static String[] name={ %<lfe<;^t  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (%}T\~`1z#  
}; 0#pjfc `:  
kTb.I;S  
private static Sort[] impl=new Sort[]{ W$B&asO  
new InsertSort(), *;"N kCf  
new BubbleSort(), bY|%ois4  
new SelectionSort(), #+N\u*-S  
new ShellSort(), bE#=\kf|  
new QuickSort(), 1t_$pDF}  
new ImprovedQuickSort(), hb9e6Cc  
new MergeSort(), Gtd!Y x  
new ImprovedMergeSort(), )xX(Et6+`  
new HeapSort() "nPmQ  
}; %C\Q{_AS  
QZB2yK3]h  
public static String toString(int algorithm){ 9 yH95uaDF  
return name[algorithm-1]; ` wuA}v3!  
} \{AxDk{z#  
M>D 3NY[,  
public static void sort(int[] data, int algorithm) { |RDmY!9&  
impl[algorithm-1].sort(data); T)&J}^j  
} 2.u d P  
kT@RA}  
public static interface Sort { ,DK|jf  
public void sort(int[] data); ;ZHKTOoK  
} "D}PbT[V  
9_h 3<3e  
public static void swap(int[] data, int i, int j) { 5!$m3j_,]?  
int temp = data; O{zY(`[  
data = data[j]; C7[ge&  
data[j] = temp; jCDZ$W89  
} _QbLg"O  
} mr6/d1af_  
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