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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。 3# r` e  
插入排序: b<?A  
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package org.rut.util.algorithm.support; l Vc':,z  
_4h[q4Z  
import org.rut.util.algorithm.SortUtil; >zY~")|R(  
/** |FrZ,(\  
* @author treeroot Wo8.tu-2  
* @since 2006-2-2 Zfub+A  
* @version 1.0 hh ynB^o  
*/ !JC!GS"M5  
public class InsertSort implements SortUtil.Sort{ Mk$Pt  
Th[Gu8b3  
/* (non-Javadoc) ;H:+w\?8f$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j[y,Jc h  
*/ zM*PN|/%sH  
public void sort(int[] data) { Bfz]PN78.G  
int temp; [_SV$Jz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wSP'pM{#2  
} %h-?ff[  
} G0VbW-`O  
} i!9|R)c  
#+]-}v3  
} 9#A&Qvyywg  
4x%R4tk  
冒泡排序: K{#1O=Gi  
TScI_8c>  
package org.rut.util.algorithm.support; C=|X]"*:u0  
H[KTM'n  
import org.rut.util.algorithm.SortUtil; Ko|p&-Z;  
 #3m7`}c  
/** :k*3?*'K  
* @author treeroot #>/s tU-  
* @since 2006-2-2 (<:mCPk(~  
* @version 1.0 >s+TD4OfY  
*/ 1}"PLq(  
public class BubbleSort implements SortUtil.Sort{ F;@A2WD  
6V@?/B  
/* (non-Javadoc) uEPdL':}2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >UUT9:,plA  
*/ f-b#F2I  
public void sort(int[] data) { Ivue"_i;!  
int temp; v)AadtZ0d  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $IU|zda8  
if(data[j] SortUtil.swap(data,j,j-1); FaUc"J  
} ]fgYO+  
} |?KdQeL  
} Sd0y=!Pj=  
} 7 ,![oY[  
5o dtYI%L  
} wmf#3"n  
jLLZZPBK  
选择排序: +S3r]D3v/  
+,BJ4``*k  
package org.rut.util.algorithm.support; n-Qpg  
_x ;fTW0  
import org.rut.util.algorithm.SortUtil; OY>0qj  
.oR_r1\y  
/** `LID*uD;_  
* @author treeroot DoYzTSWx  
* @since 2006-2-2 yA#-}Y|]b  
* @version 1.0 > l@ o\  
*/ 6%&RDrn  
public class SelectionSort implements SortUtil.Sort { U;Ne"Jh  
%ut7T!Jp  
/* mI$3[ #+  
* (non-Javadoc) cqyrao3;  
* aAX(M=3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9WH  
*/ [8J/# !B  
public void sort(int[] data) { !ufSO9eDx"  
int temp; |G QFNrNx  
for (int i = 0; i < data.length; i++) { u3>D vl@  
int lowIndex = i; `?PpzDV7Y  
for (int j = data.length - 1; j > i; j--) { b&$sY!iU  
if (data[j] < data[lowIndex]) { 5U3 b&0  
lowIndex = j; %+y92'GqG/  
} N))G/m3  
} ;| :^zo  
SortUtil.swap(data,i,lowIndex); ayb fBC  
} Dm.tYG  
} =H\ig%%E@  
MiX*PqNTM  
} ct3^V M&/  
=h{j F7  
Shell排序: X!w&ib-  
wv eej@zs  
package org.rut.util.algorithm.support; 32N *E,  
GGY WvGE+  
import org.rut.util.algorithm.SortUtil; *A,h ^  
uk(|c-_]~c  
/** B[I a8t  
* @author treeroot e{dYLQd  
* @since 2006-2-2 h 'F\9t  
* @version 1.0 ny. YkN2  
*/ !VfP#B6.  
public class ShellSort implements SortUtil.Sort{ Cy~Pfty  
O\(0{qu  
/* (non-Javadoc) @%5$x]^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NzP5s&,C69  
*/ 9mT;> mE  
public void sort(int[] data) { >**7ck  
for(int i=data.length/2;i>2;i/=2){ A+N%A] 2  
for(int j=0;j insertSort(data,j,i); |Ir&C[QS{y  
} )^C w  
} laQM*FLg  
insertSort(data,0,1); X8Xw'  
} 5V^+;eO  
\Q5Jg  
/** -zq_W+)ks  
* @param data Z3)l5JG)  
* @param j ezC2E/#  
* @param i : Nf-}"  
*/ ?1f(@  
private void insertSort(int[] data, int start, int inc) { NG2@.hP:uU  
int temp; j;|rI`67~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f~LM-7!zf}  
} 1P'R-I  
} OC[+t6  
} ~S],)E1w  
&D|wc4+  
} 16p$>a<6  
^h:%%\2  
快速排序: v/4Bt2J  
-<'&"-  
package org.rut.util.algorithm.support; > 4zH\T!  
#_, l7q8U  
import org.rut.util.algorithm.SortUtil; $Y mD;  
nEZo F  
/** ^E5[~C*o3  
* @author treeroot `;@#yyj:_  
* @since 2006-2-2 <]u~;e57  
* @version 1.0 C>?`1d@  
*/ Rr#vv  
public class QuickSort implements SortUtil.Sort{ *:q,G  
p&:(D=pIu  
/* (non-Javadoc) RSNukg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mpm#a0f  
*/ d@:4se-q+  
public void sort(int[] data) { s5s'$|h"  
quickSort(data,0,data.length-1); Z"# /,?|3@  
} 6+MZ39xC  
private void quickSort(int[] data,int i,int j){ gZFtV  
int pivotIndex=(i+j)/2; H^N@fG<*dh  
file://swap Z.Sq5\d  
SortUtil.swap(data,pivotIndex,j); kO]],Vy`  
@ y (9LSs  
int k=partition(data,i-1,j,data[j]); )<D(Mb 2p|  
SortUtil.swap(data,k,j); v\Y362Xv  
if((k-i)>1) quickSort(data,i,k-1); 6%K,3R-d  
if((j-k)>1) quickSort(data,k+1,j); 7yU<!p?(  
O>=D1no*  
} )V}u}5  
/** uKI2KWU?2  
* @param data 6QCU:2IiL  
* @param i BCE} Er&  
* @param j i#@3\&{J>  
* @return v.08,P{b  
*/ Y6|8;2E  
private int partition(int[] data, int l, int r,int pivot) { p~T)Af<(  
do{ Vp;^_,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *g}(qjl<  
SortUtil.swap(data,l,r); X0=#e54  
} ;OlC^\e  
while(l SortUtil.swap(data,l,r); !,#42TY*X  
return l; t\hvhcbL  
} \X=?+| 9  
p+O 2 :  
} 6wzTX8  
X]?qns7  
改进后的快速排序: 6$}hb|j  
y%X{[F  
package org.rut.util.algorithm.support; YGBVGpE9  
3w=OvafT:  
import org.rut.util.algorithm.SortUtil; k+au42:r  
t?1+Yw./em  
/** Zhl}X!:c?\  
* @author treeroot \\F@_nB,b  
* @since 2006-2-2 a'LM6A8~x  
* @version 1.0 MYzyg  
*/ N5ityJIgQ  
public class ImprovedQuickSort implements SortUtil.Sort { [dje!5Dc(  
A6APU><dm^  
private static int MAX_STACK_SIZE=4096; tN' -4<+  
private static int THRESHOLD=10; p/|": (U  
/* (non-Javadoc) Z|YiYQl[)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A9_)}  
*/ 'J&&F2O%  
public void sort(int[] data) { KJ Gh)  
int[] stack=new int[MAX_STACK_SIZE]; $Ik\^:-  
/( /)nYAjk  
int top=-1; -q9`Btz  
int pivot; `ySmzp  
int pivotIndex,l,r; o(,u"c/Or  
ncEOz1u  
stack[++top]=0; {L[n\h.4.  
stack[++top]=data.length-1; J?\z{ ;qa  
x[Xj[O  
while(top>0){ jP{LMmV  
int j=stack[top--]; C3Mr)  
int i=stack[top--]; 5B [kZ?>  
a'f0Wv0%"  
pivotIndex=(i+j)/2; @za X\  
pivot=data[pivotIndex]; "o +" Jd  
#C+""qm  
SortUtil.swap(data,pivotIndex,j); l65-8  
TI{W(2O*  
file://partition FFH9 $>A  
l=i-1; 2k,!P6fgl  
r=j; Mf0XQ3n`H  
do{ )q?z "F|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); c;w%R8z  
SortUtil.swap(data,l,r); :NL.#!>/  
} V+/Vk1  
while(l SortUtil.swap(data,l,r); ^<0u~u)%T  
SortUtil.swap(data,l,j); %,u_ `P  
PTfy#  
if((l-i)>THRESHOLD){ :T5p6:  
stack[++top]=i; WlHw\\ur  
stack[++top]=l-1; *I0{1cST  
} p)d0ZAs  
if((j-l)>THRESHOLD){ v3w5+F  
stack[++top]=l+1;  -lM4*+f  
stack[++top]=j; mOj6 4}_`"  
} *@J  
<(Ub(  
} mmrx*sr=  
file://new InsertSort().sort(data); =W1`FbR  
insertSort(data); 3lc'(ts %  
} xU/Eu;m  
/** ]| oh1q  
* @param data [TiOh'  
*/ 9W ng(ef6G  
private void insertSort(int[] data) { Q ^%+r"h  
int temp; U88-K1G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YYDLFt r2  
} >|jSd2_p  
} <r (Y:2  
} S$q:hXZ#e  
FL 5u68  
} -Dw qoWZ  
:]%z8,6k  
归并排序: ,bRvj8"M  
_5I" %E;S  
package org.rut.util.algorithm.support; ,^ MA,"8  
gd>Op  
import org.rut.util.algorithm.SortUtil; |r"1 &ow5  
Sr)rKc  
/** q^],K'  
* @author treeroot >#z*gCO5,  
* @since 2006-2-2 pEIc ?i*  
* @version 1.0 rf"%D<bb  
*/ unqX<6hu  
public class MergeSort implements SortUtil.Sort{ f $MVgX  
<>,V> k|  
/* (non-Javadoc) T)Byws  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^|DI9G(Bs  
*/ ($^XF:#5  
public void sort(int[] data) { 3 }Z [d  
int[] temp=new int[data.length]; (KaP=t}  
mergeSort(data,temp,0,data.length-1); V.Pb AN  
} "WOY`su>  
Pb$ep|`u  
private void mergeSort(int[] data,int[] temp,int l,int r){ 0R~{|RHM  
int mid=(l+r)/2; 7MreBs(M  
if(l==r) return ; vKppXm1  
mergeSort(data,temp,l,mid); 1_ uq46  
mergeSort(data,temp,mid+1,r); hPt(7E2ke~  
for(int i=l;i<=r;i++){ <7TE[M'  
temp=data; 5KJN](x+  
} Rt{qbM|b&  
int i1=l; 0}]k>ndT  
int i2=mid+1; W!g'*L/#L  
for(int cur=l;cur<=r;cur++){ BgLK}p^  
if(i1==mid+1) t E/s|v#O  
data[cur]=temp[i2++]; TCJH^gDt  
else if(i2>r) ckRWVw   
data[cur]=temp[i1++]; %RgCU$s[>  
else if(temp[i1] data[cur]=temp[i1++]; c;l d  
else ?#^(QR|/  
data[cur]=temp[i2++]; E!J;bX5  
} 4J*%$Vxv  
} 5-O[(b2O  
j;eR9jI$T  
} [i24$UT  
$aTZC>R  
改进后的归并排序: /7X:=~m  
CN0&uyu#4  
package org.rut.util.algorithm.support; Z++JmD1J  
/)?]vKMiI  
import org.rut.util.algorithm.SortUtil; B3uv>\  
4`uI)N(}*  
/** |Euf:yWY  
* @author treeroot M H }4F  
* @since 2006-2-2 GbG!vo  
* @version 1.0 'Syq!=,  
*/ rgheq<B:  
public class ImprovedMergeSort implements SortUtil.Sort { weC$\st:D  
SLRQ3<0W_  
private static final int THRESHOLD = 10; (u@p[ncN}  
`WHP#z  
/* iF2/:iP  
* (non-Javadoc) y8jk9Tv  
* - 8&M^-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t5 n$sF  
*/ ,6?L.L  
public void sort(int[] data) { +avu&2B  
int[] temp=new int[data.length]; rwr>43S5<3  
mergeSort(data,temp,0,data.length-1); _O ~DJ"  
} 'VCF{0{H~  
"Q]`~u':  
private void mergeSort(int[] data, int[] temp, int l, int r) { T:S+P t~  
int i, j, k;  g!5`R`7  
int mid = (l + r) / 2; x]6OE]]8L  
if (l == r) Zuod1;qIh  
return; aB~?Y+m  
if ((mid - l) >= THRESHOLD) ;,n{6`  
mergeSort(data, temp, l, mid); H `Fe |6I&  
else 9r% O  
insertSort(data, l, mid - l + 1); Ak[}s|,)  
if ((r - mid) > THRESHOLD) 1t/#ZT!X/  
mergeSort(data, temp, mid + 1, r); & D4'hL3  
else %{s<h6{R  
insertSort(data, mid + 1, r - mid); =xFw4 D9  
62Yi1<kV@  
for (i = l; i <= mid; i++) { 9r!psRA:`)  
temp = data; !]7r>NS>  
} '"Q;54S**  
for (j = 1; j <= r - mid; j++) { lw0l86^Y  
temp[r - j + 1] = data[j + mid]; IBr?6_\%"4  
} I:[^><?E  
int a = temp[l]; Hj"`z6@7  
int b = temp[r]; -L(F:  
for (i = l, j = r, k = l; k <= r; k++) { b_@MoL@A!  
if (a < b) { !\.x7N<)0  
data[k] = temp[i++]; OF*m 9  
a = temp; '+^HeM^;  
} else { 5Og.:4  
data[k] = temp[j--]; hl?G_%a  
b = temp[j]; V~` ?J6  
} b&X- &F  
} vx /NG$  
} Gb.r!W8  
~itrM3^"w  
/** }8Tr M0q8  
* @param data DYkNP: +  
* @param l ]Sg4>tp  
* @param i EOWLGleD1  
*/ ,cD(s(6+  
private void insertSort(int[] data, int start, int len) { deO/`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :hB/|H*=  
} <5 G+(vP  
} 7(AB5.O  
} SbI %|  
} rAq2   
p5&:>>  
堆排序: +m kub}<a  
y}dop1zp  
package org.rut.util.algorithm.support; @w|'ip5@  
dBkw.VO W  
import org.rut.util.algorithm.SortUtil; u*0Ck*pZ  
OI</o0Ca  
/** vfPL;__{Y]  
* @author treeroot .XQ_,  
* @since 2006-2-2 ;:NW  
* @version 1.0 `b 6j7  
*/ ,,vl+Z <&  
public class HeapSort implements SortUtil.Sort{ YNV4w{>FD  
"pGSz%i-  
/* (non-Javadoc) }S|~^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3(l^{YC+[7  
*/ d[(KgX9  
public void sort(int[] data) { (;-< @~2  
MaxHeap h=new MaxHeap(); 2.6%?E]  
h.init(data); dq[X:3i  
for(int i=0;i h.remove(); }DiMt4!ZC!  
System.arraycopy(h.queue,1,data,0,data.length); 9B gR@b  
} ` MtI>x c  
-:]_DbF  
private static class MaxHeap{ ~LqjWU  
v8Gm ;~  
void init(int[] data){ nS'hdeoW  
this.queue=new int[data.length+1]; ?v?b%hK!;  
for(int i=0;i queue[++size]=data; ~ _R 8; b  
fixUp(size); 0w[#`  
} 60?/Z2w5  
} ,tBb$T)7<  
v;4l*)$)  
private int size=0; #wn`choT'  
J+ tpBPmb  
private int[] queue; f/Cf2 K  
To v!X8p  
public int get() { S{_i1'  
return queue[1]; V4kt&61  
} #)hc^gIO&<  
G*.}EoA  
public void remove() { Kv3cKNvu~  
SortUtil.swap(queue,1,size--); @X\-c2=  
fixDown(1); M-Gl".*f  
} KneCMFy  
file://fixdown uM|*y-4  
private void fixDown(int k) { L} r#KfIb  
int j; O3H dPQ  
while ((j = k << 1) <= size) { ?QuD:v ck  
if (j < size %26amp;%26amp; queue[j] j++; . AJ(nJ)  
if (queue[k]>queue[j]) file://不用交换 uEqL Dg  
break; G}ZJ}5h  
SortUtil.swap(queue,j,k); ;Gf,$dbWn  
k = j; @AM;58.  
} ; C/:$l  
} z2:^Qg  
private void fixUp(int k) { +zM WIG  
while (k > 1) { 8XFs)1s[  
int j = k >> 1; q^5j&jx Vl  
if (queue[j]>queue[k]) Pyfj[m4+}  
break; Se*o{V3s$  
SortUtil.swap(queue,j,k); N,N9K  
k = j; BWRM gN'.  
} vhe[:`=a  
} R0|dKKzS  
h$3o]~t  
} 1yHlBeEC  
K1i@.`na/$  
} B.)!zv\{  
53>y<  
SortUtil: tS|gQUF17  
DbDi n  
package org.rut.util.algorithm; \C<|yD  
T\Zf`.mt  
import org.rut.util.algorithm.support.BubbleSort; 'vbrzI5m  
import org.rut.util.algorithm.support.HeapSort; $,Q0ay  
import org.rut.util.algorithm.support.ImprovedMergeSort; R'M=`33M  
import org.rut.util.algorithm.support.ImprovedQuickSort; Y|%s =0M  
import org.rut.util.algorithm.support.InsertSort; F\LAw#IJ  
import org.rut.util.algorithm.support.MergeSort; =QG@{?JTl  
import org.rut.util.algorithm.support.QuickSort; )?es3Ehqq  
import org.rut.util.algorithm.support.SelectionSort; jhU'UAn  
import org.rut.util.algorithm.support.ShellSort; Vqr#%. N  
`x b\)  
/** r57CyO  
* @author treeroot ,|:TML  
* @since 2006-2-2 `v;9!ReZV  
* @version 1.0 ,ddoII  
*/ ;h|zNx0  
public class SortUtil { Yi?X|"\`  
public final static int INSERT = 1; >J4Tk1//b  
public final static int BUBBLE = 2; ([vyY}43h  
public final static int SELECTION = 3; \q2:1X |  
public final static int SHELL = 4; @D$^- S6  
public final static int QUICK = 5; Tvdg:[V<  
public final static int IMPROVED_QUICK = 6; s @AGU/v  
public final static int MERGE = 7; [diUO1p  
public final static int IMPROVED_MERGE = 8; dY|~"6d)  
public final static int HEAP = 9; HP/f`8  
\OR=+\].9  
public static void sort(int[] data) { .K I6<k/  
sort(data, IMPROVED_QUICK); "}"hQ.kAz  
} [w>T.b  
private static String[] name={ ] yg3|C;  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &A}@@d  
}; Q7V*~{  
Nu}x`Qkmr  
private static Sort[] impl=new Sort[]{ G3[X.%g`  
new InsertSort(), v@_^h}h/,=  
new BubbleSort(), AcRrk  
new SelectionSort(), G3Z>,"w;=  
new ShellSort(), BC*)@=7fx  
new QuickSort(), ;^fGQ]`4  
new ImprovedQuickSort(), j.}@9  
new MergeSort(), |_fmbG  
new ImprovedMergeSort(), O $ p  
new HeapSort() 'aj97b;lpG  
}; mI$<+S1!  
,drbj.0-  
public static String toString(int algorithm){ g4p-$WyT8>  
return name[algorithm-1]; }02#[vg  
} nw.,`M,N  
H@-txO1`::  
public static void sort(int[] data, int algorithm) { g3fxf(iY(  
impl[algorithm-1].sort(data); no~Yet+<"  
} 6A$  Y]u  
jFE1k(2e  
public static interface Sort { {DP%=4  
public void sort(int[] data); y~16o   
} ;_bZH%o.  
O{P@fv%~(o  
public static void swap(int[] data, int i, int j) { `B1r+uTP~  
int temp = data; |"gg2p  
data = data[j]; 1u9*)w  
data[j] = temp; gfr y5e  
}  gAFu  
} A(j9T,!  
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