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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。 +VxzWNs*JP  
插入排序: KITC,@xE_O  
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package org.rut.util.algorithm.support; Q!7il<S  
A)"?GK{*  
import org.rut.util.algorithm.SortUtil; KwO;ICdJ  
/** jd]Om r!  
* @author treeroot w1tWyKq  
* @since 2006-2-2 6U|An*  
* @version 1.0 T%|{Qo<j  
*/ IiW*'0H:/  
public class InsertSort implements SortUtil.Sort{ ~n9x ,  
Aw#@}TGT  
/* (non-Javadoc) c'#w 8 V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }ZaZPB/_}P  
*/ /BEE.`6yI5  
public void sort(int[] data) { QP HibPP:  
int temp; 1.29%O8V_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L-. +yNX)  
} r6_g/7.-  
} -\=s+n_ZP?  
} F/33# U  
VZhtx)  
} )Iu0MN&  
 !4Q0   
冒泡排序: kucH=96  
r{oRN  
package org.rut.util.algorithm.support; *?Hc8y-dG,  
aY:u-1  
import org.rut.util.algorithm.SortUtil; 5dwC~vn}c  
Lg6;FbY?  
/** eO7 )LM4  
* @author treeroot 2>`m1q:  
* @since 2006-2-2 cg`bbZ  
* @version 1.0 h"O4r8G}  
*/ >JOEp0J  
public class BubbleSort implements SortUtil.Sort{ ,j3Yvn W  
>~_oSC)E  
/* (non-Javadoc) '0ks`a4q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >+}yI}W;e  
*/ K"fr4xHq  
public void sort(int[] data) { +UvT;"  
int temp; {,;R\)8D  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2Kg-ZDK8  
if(data[j] SortUtil.swap(data,j,j-1); p;nRxi7'  
} nulLK28q  
} 3 UXaA;  
} 7 LotN6H  
} b { M'aV  
$W_sIS0\z  
} Tj(DdR#w  
_z6_mmMp  
选择排序: ( AI gW  
Ec2?'*s   
package org.rut.util.algorithm.support; 5N~JRq\  
4eD>DW  
import org.rut.util.algorithm.SortUtil; QYB66g:  
*3R3C+ L  
/** ~7;AV(\%e  
* @author treeroot [N=v=J9  
* @since 2006-2-2 bz'#YM  
* @version 1.0 *@+E82D  
*/ Z@1vJH6IbA  
public class SelectionSort implements SortUtil.Sort { lEXER^6  
Mp-hNO}.Z  
/* Q0j4 c  
* (non-Javadoc) Y'&rSHI"  
* ,#V }qSKUS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {e]ktj#+{  
*/ @sPuc.  
public void sort(int[] data) { 7gnrLc$]O  
int temp; U*Sjb% Qb  
for (int i = 0; i < data.length; i++) { r)]8zK4;=  
int lowIndex = i; bI?uV;m>  
for (int j = data.length - 1; j > i; j--) { |~]@hs~  
if (data[j] < data[lowIndex]) { ;0"p)O@s04  
lowIndex = j; tX.fbL@ T  
} lnQfpa8j  
} l $:?82{  
SortUtil.swap(data,i,lowIndex); qmy3pnL  
} UlD]!5NO  
}  I?R?rW  
`fM]3]x>  
} E7`Q =4@e  
goje4;  
Shell排序: gt \O  
wg}rMJoG|  
package org.rut.util.algorithm.support; 96#aG h>  
p|0ZP6!|  
import org.rut.util.algorithm.SortUtil; 2~B9 (|  
VKb=)v[K  
/** ]1)#Y   
* @author treeroot )RCva3Ul  
* @since 2006-2-2 =6O<1<[y  
* @version 1.0 opIbs7k-  
*/ w l#jSj%pd  
public class ShellSort implements SortUtil.Sort{ QLLMSa+! \  
Ha41Wn'tZ  
/* (non-Javadoc) (k$KUP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o,yZ1"  
*/ =yCz!vc  
public void sort(int[] data) { ]!'}{[1}  
for(int i=data.length/2;i>2;i/=2){ Nc_Qd4<[@G  
for(int j=0;j insertSort(data,j,i); v/G)E_  
} BenUyv1d  
} "lnI@t{o  
insertSort(data,0,1); ]w/%>  
} wQw&.)T  
T`W37fz0  
/** :8LK}TY7  
* @param data (Kg( 6E,  
* @param j AAc*\K  
* @param i XCyAt;neon  
*/ f+V^q4  
private void insertSort(int[] data, int start, int inc) { :zK\t5  
int temp; LUKt!I0l  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N /Fa^[  
} cM Z-  
} aS/MlMf  
} f7v|N)  
;=lQMKx0  
} @3_."-d  
2q}lSa7r  
快速排序: =2OLyZDI  
#!7b3>}  
package org.rut.util.algorithm.support; 5J2tR6u-(  
fqm-?vy}  
import org.rut.util.algorithm.SortUtil; *5z"Xy3J  
q c DJ  
/** fl+dL#]  
* @author treeroot (X/dP ~  
* @since 2006-2-2 2*pNIc  
* @version 1.0 XJ6=Hg4_O  
*/ N?l  
public class QuickSort implements SortUtil.Sort{ 5c 69M5  
YDjjhe+  
/* (non-Javadoc) Y*-dUJK-`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,tl(\4n  
*/ PM8*/4Cu.5  
public void sort(int[] data) { U}c05GiQw  
quickSort(data,0,data.length-1); Lt2<3DB  
} ~vV+)KI  
private void quickSort(int[] data,int i,int j){ /7&WFCc)(  
int pivotIndex=(i+j)/2; "VgPaz#  
file://swap u,`cmyZ  
SortUtil.swap(data,pivotIndex,j); >p>B-m  
~ yu\vqN  
int k=partition(data,i-1,j,data[j]); JLh{>_Rr  
SortUtil.swap(data,k,j); Ocf:73t  
if((k-i)>1) quickSort(data,i,k-1); %ou@Y`  
if((j-k)>1) quickSort(data,k+1,j); <G /a-Z  
cIQ e^C  
} Rc#c^F<  
/** ?XnKKw\  
* @param data UI_u:a9Q/  
* @param i `2a7y]?  
* @param j f"aqg/l  
* @return k~=W1R%  
*/ T u7}*vsR  
private int partition(int[] data, int l, int r,int pivot) { q 1~3T;Il  
do{ eeCrHt4;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4%>2 >5  
SortUtil.swap(data,l,r); AkA2/7<[  
} CH] +S>$  
while(l SortUtil.swap(data,l,r); qrkJ:  
return l; ~mk>9Gp  
} ,Wlw#1fP  
NU(YllPB  
} d_)VeuE2  
GEJy?$9   
改进后的快速排序:  ;GZ/V;S  
G%XjDxo$I  
package org.rut.util.algorithm.support; !BEl6h  
;6tGRh$b  
import org.rut.util.algorithm.SortUtil; OYj~"-3y)  
_.+2sm   
/** Wq"^{  
* @author treeroot ,A;wLI  
* @since 2006-2-2 0/fA>%&  
* @version 1.0 *x@.$=NF"  
*/ QRz5eGpW  
public class ImprovedQuickSort implements SortUtil.Sort { eK =v<X  
+OfHa\Nz  
private static int MAX_STACK_SIZE=4096; #OVS]Asn}  
private static int THRESHOLD=10; x]pZcx9  
/* (non-Javadoc) [KNA5(Y0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SxW.dT8{  
*/ VL/KC-6  
public void sort(int[] data) { Xr]<v%,C  
int[] stack=new int[MAX_STACK_SIZE]; PGJkQsp0  
QP<vjj%  
int top=-1; "4WwiI9  
int pivot; F+285JK  
int pivotIndex,l,r; B<!WAw+  
M:R|hR{=*  
stack[++top]=0; e<duD W$X  
stack[++top]=data.length-1; r%vO^8FQ  
qqr]S^WW  
while(top>0){ gF~#M1!!  
int j=stack[top--]; vhL/L?NB$  
int i=stack[top--]; 7qEc9S@  
df7 xpV  
pivotIndex=(i+j)/2; oWV^o8& GH  
pivot=data[pivotIndex]; ;[!W*8.c  
?.6fVSa  
SortUtil.swap(data,pivotIndex,j); o>@9[F,h+  
U%l<48@8  
file://partition RZTC+ylj  
l=i-1; I@l }%L  
r=j; N5Ih+8zT  
do{ P>qDQ1  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6+W`:0je  
SortUtil.swap(data,l,r); 'WcP+4c  
} {7d\du&G  
while(l SortUtil.swap(data,l,r); V[avV*;3i  
SortUtil.swap(data,l,j); C#:L.qK  
VD+y4t'^  
if((l-i)>THRESHOLD){ z0xw0M+X  
stack[++top]=i; C0[ Z>$  
stack[++top]=l-1; 0%;y'd**Ck  
} *L=F2wW  
if((j-l)>THRESHOLD){ BiD}C  
stack[++top]=l+1; TA>28/U#  
stack[++top]=j; *IV_evgM7  
} 6w*q~{"(  
"XWO#,Ue  
} zz1]6B*eX  
file://new InsertSort().sort(data); *Fm#Qek  
insertSort(data); T )"U q  
} eWU@ @$9  
/** U_ *K%h\m  
* @param data _aK4[*jnqh  
*/ >;Vy{bL8  
private void insertSort(int[] data) { y({EF~w  
int temp; |>jlmaV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |$sMzPCxOk  
} &*;E wfgZ  
} T56%3i  
} G*W54[  
Qcs >BOV~  
} *S] K@g  
N)o/}@]6  
归并排序: faPgp  
IT0 [;eqR  
package org.rut.util.algorithm.support; #({ 9M  
Gu5%Pou  
import org.rut.util.algorithm.SortUtil; +w9X$<?_  
,Ep41v;T%`  
/** LRKl3"M  
* @author treeroot v)-:0 f  
* @since 2006-2-2 wSIfqf+y  
* @version 1.0 %G/j+Pf  
*/ } DQ KfS  
public class MergeSort implements SortUtil.Sort{ 2pV@CT  
]2@g 5H}M  
/* (non-Javadoc) l t{yo\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]97`=,OUg  
*/ 'X/(M<c  
public void sort(int[] data) { #/2W RN1L  
int[] temp=new int[data.length]; XS`=8FQ  
mergeSort(data,temp,0,data.length-1); $p~X"f?0  
} uH=^ILN.  
;SVAar4r  
private void mergeSort(int[] data,int[] temp,int l,int r){ MH h;>tw  
int mid=(l+r)/2; rLJjK$_x  
if(l==r) return ; sq1v._^s  
mergeSort(data,temp,l,mid); b,o@ m  
mergeSort(data,temp,mid+1,r); JmJNq$2#c  
for(int i=l;i<=r;i++){ ,c.(&@  
temp=data; ^K`Vqo  
} %xh A2  
int i1=l; @zAav>  
int i2=mid+1; K %Qj<{)  
for(int cur=l;cur<=r;cur++){ Nd;,Wz]  
if(i1==mid+1) ,e!9WKJ B  
data[cur]=temp[i2++]; 3W.5 [;}  
else if(i2>r) k!= jO#)Rd  
data[cur]=temp[i1++]; 5#hsy;q;[  
else if(temp[i1] data[cur]=temp[i1++];  jgd^{!  
else 2kV{|`1  
data[cur]=temp[i2++]; bbAJ5EqL  
} j  hr pS  
} n s`njx}C  
m8C scC Z}  
} ^:64(7  
uZkh.0yB  
改进后的归并排序: _MST8  
p!RyxB1.|  
package org.rut.util.algorithm.support; $hE,BeQ  
O.^1r  
import org.rut.util.algorithm.SortUtil; NI33lp$V  
XR.Sm<A[  
/** 02 6|u|R  
* @author treeroot $<v{$UOh  
* @since 2006-2-2 $5S/~8g(  
* @version 1.0 ?^3Q5ye  
*/ HqKI|^  
public class ImprovedMergeSort implements SortUtil.Sort { {Tl|>\[P  
j/*4Wj[  
private static final int THRESHOLD = 10; Q=T/hb  
wTK>U`o  
/* { ((|IvP`  
* (non-Javadoc) aFtL_# U  
* a?5R ;I B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }`*DMI;-  
*/ `vj"HhC  
public void sort(int[] data) { z3 Ro*yJU  
int[] temp=new int[data.length]; <Q|(dFr`v  
mergeSort(data,temp,0,data.length-1); 5Ff1x-lQ  
} v dR6y  
RY9h^q*  
private void mergeSort(int[] data, int[] temp, int l, int r) { FNB4YZ6  
int i, j, k; aK4ZH}XHE"  
int mid = (l + r) / 2; ``9`Xq  
if (l == r) =BNS3W6  
return; A@qwD300Vo  
if ((mid - l) >= THRESHOLD) <Z58"dg.5  
mergeSort(data, temp, l, mid); +tSfx  
else 1 wB2:o<  
insertSort(data, l, mid - l + 1); HA W57N  
if ((r - mid) > THRESHOLD) xXn2M*g  
mergeSort(data, temp, mid + 1, r); P K9BowlW  
else Ki{]5Rz  
insertSort(data, mid + 1, r - mid); 'H.,S_v1x  
$9m>(b/;n  
for (i = l; i <= mid; i++) { ?84B0K2N s  
temp = data; $TR#-q  
} V-.Nc#  
for (j = 1; j <= r - mid; j++) { D8,V'n>L  
temp[r - j + 1] = data[j + mid]; d-BUdIz  
} OZed+t=  
int a = temp[l]; $(JB"%S8c  
int b = temp[r]; 9m:G8j'  
for (i = l, j = r, k = l; k <= r; k++) { t!JD]j>q  
if (a < b) { (TQhO$,  
data[k] = temp[i++]; C#Y_La  
a = temp; u~VvGLFf5,  
} else { c"x-_Uk  
data[k] = temp[j--]; 8 DE%ot  
b = temp[j]; "O j2B|:s&  
} 6-vQQ-\  
} - BE.a<  
} &ytnoj1L(  
=%IBl]Z!"  
/** cc_v4d{x  
* @param data gHe%N? '  
* @param l QGI_aU  
* @param i VGtKW kVH  
*/ jUg.Y98  
private void insertSort(int[] data, int start, int len) { \$%q< _l  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); u/g4s (a  
} }8,[B50  
} ;&8  
} +K"8Q'&t  
} LA%t'n h  
i<uWLhgh1$  
堆排序: SB}0u=5  
 q{*4BL'  
package org.rut.util.algorithm.support; +M %zOX/  
G" &yE.E5  
import org.rut.util.algorithm.SortUtil; %\ef Mhn  
ghu8Eg,Y  
/** yB~` A>~M  
* @author treeroot =n7 3bm  
* @since 2006-2-2 etk@ j3#  
* @version 1.0 0X'2d  
*/ ;\[ el<Y)s  
public class HeapSort implements SortUtil.Sort{ Ja(>!8H>@  
[sF z ;Py]  
/* (non-Javadoc) z0Bw+&^]}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NL76 jF  
*/ 5Dv ;-G;  
public void sort(int[] data) { h%yw'?s  
MaxHeap h=new MaxHeap(); T~" T%r  
h.init(data); d9>k5!  
for(int i=0;i h.remove(); C\WU<!  
System.arraycopy(h.queue,1,data,0,data.length); ;DXcEzV  
} IS9}@5`'  
$&l} ABn  
private static class MaxHeap{ \Rff3$  
Yo$NE  
void init(int[] data){ L dyTB@  
this.queue=new int[data.length+1]; %:~LU]KX  
for(int i=0;i queue[++size]=data; ~=xS\@UY =  
fixUp(size); ?!$uMKyt  
} > lg-j-pV  
} O?I~XM'S  
">V.nao  
private int size=0; TtZ '~cGR  
bw\a\/Dw  
private int[] queue; eJv_`#R&Of  
Q\ AM] U  
public int get() { D3BNA]P\2@  
return queue[1]; f6d:5 X_  
} n,+/%IZ  
`*`@ro  
public void remove() { MsL*\)*s  
SortUtil.swap(queue,1,size--); aOr'OeG(=e  
fixDown(1); F7r!zKXZ  
} 0M^v%2 2  
file://fixdown xct{Tv[FO  
private void fixDown(int k) { y:>'1"2`  
int j; @! gJOy  
while ((j = k << 1) <= size) { Hi{1C"%  
if (j < size %26amp;%26amp; queue[j] j++; (E.,kcAJ  
if (queue[k]>queue[j]) file://不用交换 OE4hG xG  
break; }#3'72  
SortUtil.swap(queue,j,k); <E`Ygac  
k = j; ,(  ?q  
} OE=]/([  
} A_mVe\(*M  
private void fixUp(int k) { $aFCe}3b<  
while (k > 1) { >#Obhs|S{C  
int j = k >> 1; r- :u*  
if (queue[j]>queue[k]) 8LMO2Wyq  
break; uIO<6p)  
SortUtil.swap(queue,j,k); }{(dG7G+  
k = j; 1oSrhUTy  
} $%3"@$  
} ? !dy  
tf5h/:  
} {M.OOEcIp  
rrSsQq  
} (<"uV%1  
S3G9/  
SortUtil: \9%SR~  
&H`AS6  
package org.rut.util.algorithm; %FDv6peH  
N`JkEd7TT  
import org.rut.util.algorithm.support.BubbleSort; %%dQIlF  
import org.rut.util.algorithm.support.HeapSort; aU)NbESu  
import org.rut.util.algorithm.support.ImprovedMergeSort; =y$|2(6  
import org.rut.util.algorithm.support.ImprovedQuickSort; :'pLuN  
import org.rut.util.algorithm.support.InsertSort; #9a\Ab  
import org.rut.util.algorithm.support.MergeSort; 7t@r}rC,K  
import org.rut.util.algorithm.support.QuickSort; v|&Nh?r  
import org.rut.util.algorithm.support.SelectionSort; hPP,D\#  
import org.rut.util.algorithm.support.ShellSort; []vt\I ;  
*&d>Vk."]  
/** Nzo;j0 [  
* @author treeroot `|Wu\X  
* @since 2006-2-2 B`)gXqBt  
* @version 1.0 VJeoO)<j  
*/ _shoh  
public class SortUtil { BXCB/:0  
public final static int INSERT = 1; r^m8kYezQ  
public final static int BUBBLE = 2; `k 5'nnyP  
public final static int SELECTION = 3; d3nMeAI AO  
public final static int SHELL = 4; 8)wxc1  
public final static int QUICK = 5; FKX+ z  
public final static int IMPROVED_QUICK = 6; yFYFFv\?  
public final static int MERGE = 7; z; dFS  
public final static int IMPROVED_MERGE = 8; 3Dd"qON!  
public final static int HEAP = 9; ZJ$nHS?ra  
;!ICLkc$  
public static void sort(int[] data) { DaN=NURDV  
sort(data, IMPROVED_QUICK); 4DYa~ =w  
} KXQ &u{[<  
private static String[] name={ 7j ]d{lD  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O)$rC  
}; N}j]S{j}'  
-8r';zR  
private static Sort[] impl=new Sort[]{ &7i o/d\/  
new InsertSort(), s?:&#  
new BubbleSort(), c,K)*HB  
new SelectionSort(), Zt;dPYq>  
new ShellSort(), PLkwtDi+&  
new QuickSort(), .;1tu+S  
new ImprovedQuickSort(), *Va;ra(V2  
new MergeSort(), =Ts3O0"[  
new ImprovedMergeSort(), a+U^mPe  
new HeapSort() *CIR$sS  
}; |B<;4ISaRI  
BkP'b{z|  
public static String toString(int algorithm){ nD8 Qeem@  
return name[algorithm-1]; iB]xYfQ&@V  
} lhx"<kR 4  
. paA0j  
public static void sort(int[] data, int algorithm) { 1kd\Fq^z$  
impl[algorithm-1].sort(data); ] WsQ=  
} ]~Su  
Aa.eu=@I  
public static interface Sort { *t)Y@=k3>  
public void sort(int[] data); J@Qt(rRxi  
} SWX[|sjdB  
l8XgzaW  
public static void swap(int[] data, int i, int j) { PQkFzyk  
int temp = data; 1[; 7Ay  
data = data[j]; [{i"Au]  
data[j] = temp; )2tDX=D  
} #K:!s<_"  
} WS!:w'rzr  
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