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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。 0OEtU5lf`y  
插入排序: z30=ay1  
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package org.rut.util.algorithm.support; ?o@E1:aA  
5uzpTNAMM1  
import org.rut.util.algorithm.SortUtil; Etdd\^  
/** dbd"pR8v  
* @author treeroot Wz5d| b  
* @since 2006-2-2 F\:{}782u  
* @version 1.0 vRxL&8`&  
*/ a9L0f BRy  
public class InsertSort implements SortUtil.Sort{ ^,>}%1\  
(KZUvsSk  
/* (non-Javadoc) )2/b$i,JKk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y[T J;O!R  
*/ 95VqaR,  
public void sort(int[] data) {  r^e-.,+  
int temp; N4tc V\O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pc^E'h:  
} u"eZa!#  
} #i6[4X?  
} RR8U Cv  
=\*S'Ded  
}  POkXd^pI  
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冒泡排序: j_hjCQ  
oA[2)BU  
package org.rut.util.algorithm.support; qgh]@JJh  
dnk1Mu<  
import org.rut.util.algorithm.SortUtil; uLF\K+cz  
3$;J0{&[i  
/** ud 5x$`  
* @author treeroot r*xq(\v  
* @since 2006-2-2 9  4 "f  
* @version 1.0 l8eT{!4  
*/ zC[i <'h!T  
public class BubbleSort implements SortUtil.Sort{ ^BQ>vI'.4  
Idt@Hk5<&  
/* (non-Javadoc) zv>ZrFl*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z5 w`-#  
*/ zp}yiE!bl  
public void sort(int[] data) { qEPf-O:lm  
int temp; A5`#Ot*3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ l[:^TfB  
if(data[j] SortUtil.swap(data,j,j-1); k:@a[qnY  
} 1i ?gvzrq  
}  j@s=ER  
} N.kuE=X  
} "bL P3  
uHTKo(NG  
} `Nc`xO?  
@?(nwj~ s`  
选择排序: + ?[ ACZF  
T "ZQPLg  
package org.rut.util.algorithm.support; @DRfNJ}  
)WzGy~p8K  
import org.rut.util.algorithm.SortUtil; 3XMBu*  
\;4L~_2$q  
/** `@W3sW/^  
* @author treeroot }S1Z>ZA5  
* @since 2006-2-2 zS#f%{   
* @version 1.0 Tq_1wX'\  
*/ H!Fr("6}  
public class SelectionSort implements SortUtil.Sort { $@XPL~4  
3^uL`ETm@  
/* ;2+ FgOj  
* (non-Javadoc) RI7qsm6RN  
* :5q^\xmmq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }?\#_BCjx(  
*/ sASAsGk<  
public void sort(int[] data) {  dfYYyE  
int temp; \k2C 5f  
for (int i = 0; i < data.length; i++) { WoC\a^V  
int lowIndex = i; 1)nM#@%](h  
for (int j = data.length - 1; j > i; j--) { &6=TtTp"9  
if (data[j] < data[lowIndex]) { Q%_!xQP`  
lowIndex = j; <T4 7kLI  
} 1mvu3}ewx  
} w-{#6/<kI5  
SortUtil.swap(data,i,lowIndex); E` :ZH  
} !8H!Fj`|j  
} TPN:cA6[c  
eUGm ns  
} Qr^Z~$i t  
N> uZt2  
Shell排序: \rB/83[;u  
N?Z+zN&P  
package org.rut.util.algorithm.support; 0`aHwt/F  
>n@>h$]  
import org.rut.util.algorithm.SortUtil; 3M`hn4)K  
uaZ"x& oZ#  
/** ru(?a~lF8~  
* @author treeroot q329z>  
* @since 2006-2-2 L~SrI{aYPf  
* @version 1.0 FcJ.)U  
*/ ,Yiq$Z{qQ  
public class ShellSort implements SortUtil.Sort{ U>3%!83kF  
$A5B{2  
/* (non-Javadoc) soFvrl^Ql+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @eAGN|C5  
*/ Q}k_#w  
public void sort(int[] data) { 7k[`]:*o  
for(int i=data.length/2;i>2;i/=2){ =]2RC1#}e  
for(int j=0;j insertSort(data,j,i); MfZ}xu  
} ~0Q\Lp);  
} :c+a-Py $E  
insertSort(data,0,1); &D&5UdN x  
} PG-cu$\??  
c DEe?WS  
/** &})4?5  
* @param data .yHHogbt  
* @param j Y`[HjS,  
* @param i l72i e  
*/ qx#ghcU  
private void insertSort(int[] data, int start, int inc) { 80R= r  
int temp; +lXdRc`6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <W^XSk  
} `,8R~-GPD  
} p0:&7,+a,  
} JXZ:Wg  
Cx1Sh#9  
} 0YsN82IDD  
Xoa <r9  
快速排序: qNuv?.7  
$O8EiC!f6  
package org.rut.util.algorithm.support; h\: tUEg#J  
<whPM  
import org.rut.util.algorithm.SortUtil; rwV u?W  
6{F S /+  
/** w$<fSe7  
* @author treeroot ?6.KS  
* @since 2006-2-2 h>`'\qy  
* @version 1.0 ~n]2)>6  
*/ KWZNu &)  
public class QuickSort implements SortUtil.Sort{ >x_:=%Wr+  
 +lf@O&w  
/* (non-Javadoc) 2=UTH% 1D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tr67ofld|  
*/ j)lM:vXR  
public void sort(int[] data) { MlcoOi!  
quickSort(data,0,data.length-1); %(wsGNd  
} EssUyF-jwU  
private void quickSort(int[] data,int i,int j){ -$!Pf$l@  
int pivotIndex=(i+j)/2; Af! W K=  
file://swap Kw5+4R(5  
SortUtil.swap(data,pivotIndex,j); ED =BZR  
L}sm R,  
int k=partition(data,i-1,j,data[j]); XH Zu>[  
SortUtil.swap(data,k,j);  vCH v  
if((k-i)>1) quickSort(data,i,k-1); 1H2u,{O  
if((j-k)>1) quickSort(data,k+1,j); KI? 1( L  
yrv SbqR  
} A5>gLhl7  
/** SUFaHHk@/b  
* @param data L^ jC& dF  
* @param i YQ[&h  
* @param j SJ|.% gn  
* @return 5IF~]5s  
*/ BX)cV  
private int partition(int[] data, int l, int r,int pivot) { 6[Pr<4J  
do{ %_X[{(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =w>>7u$4  
SortUtil.swap(data,l,r); 4@V<Suw  
} MdTd$ 4J3  
while(l SortUtil.swap(data,l,r); )*QTxN  
return l;  "lnk  
} Zn=JmZ  
`a1R "A  
} vEee/+1?  
A"T. nqB^y  
改进后的快速排序: #}]il0d  
cE8 _keR~  
package org.rut.util.algorithm.support; %?{2uMfq-f  
2*",{m  
import org.rut.util.algorithm.SortUtil; sB1tce  
PFn[[~5V  
/** 6s"bstc{  
* @author treeroot }mS0{rxD4  
* @since 2006-2-2 1X:whS5S  
* @version 1.0 ]e3}9.  
*/ 0{Ll4  
public class ImprovedQuickSort implements SortUtil.Sort { pUEok+  
kGTc~p(  
private static int MAX_STACK_SIZE=4096;  Vgb>3]SU  
private static int THRESHOLD=10; X72X:"  
/* (non-Javadoc) 3b/vyZF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DDCQAf  
*/ @IKe<{w  
public void sort(int[] data) { LkbvA  
int[] stack=new int[MAX_STACK_SIZE]; ^DCv-R+ p  
Oj|p`Dzh  
int top=-1; lL+^n~g  
int pivot; CzsY=DBH=  
int pivotIndex,l,r; Dp |FyP_w  
!?-5 hh1\  
stack[++top]=0; r#Oz0=0u  
stack[++top]=data.length-1; DO,&Foh\  
Ak-7}i  
while(top>0){ > mDubP  
int j=stack[top--]; '!L1z45  
int i=stack[top--]; ob5nk ^y  
I!0 +RP(  
pivotIndex=(i+j)/2; Y,Zv0-"  
pivot=data[pivotIndex]; :H8L(BsI  
%+W >+xRb  
SortUtil.swap(data,pivotIndex,j); /F9lW}pd  
7wEG<,D  
file://partition %L|bF"K5;  
l=i-1; WMl^XZO  
r=j; /Gv$1t^a  
do{ zMqEMx9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); DczF0Ow  
SortUtil.swap(data,l,r); ]mT} \b  
} A =#-u&l  
while(l SortUtil.swap(data,l,r); ?{P6AF-xcf  
SortUtil.swap(data,l,j); KcF+!;:  
r{jD,x2  
if((l-i)>THRESHOLD){ !l~aRj-WZ  
stack[++top]=i; /{)cI^9  
stack[++top]=l-1; Gv3Fg[MA@c  
} /g7?,/vnZ  
if((j-l)>THRESHOLD){ TFA  
stack[++top]=l+1; ]TprPU39  
stack[++top]=j; ^ nZ2p$  
} ~TR|Pv  
zi[M{bm  
} M{RZ-)IC  
file://new InsertSort().sort(data); ? Z fhz   
insertSort(data); 'm? x2$u8  
} fhWD>;%F%  
/** Yf`.Cq_:  
* @param data D ;I;,Z  
*/ __%E!*m"<_  
private void insertSort(int[] data) { \k-juF80  
int temp; _%%"Y}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (>`SS#(T!  
} >^HTghgRD  
} w:+#,,rwzV  
} Bzt`9lg  
QNwAuH T  
} r:rJv  
fzG1<Gem  
归并排序: _VJwC|  
5kNs@FP  
package org.rut.util.algorithm.support; 9yAu<a  
1Sk6[h'CL  
import org.rut.util.algorithm.SortUtil; Z*3}L  
wo9f99  
/** qyfxTQ5  
* @author treeroot Y. tFqzo3  
* @since 2006-2-2 '+tT$k  
* @version 1.0 ,WK$jHG]  
*/ fsuvg jlE  
public class MergeSort implements SortUtil.Sort{ yyDBW`V((  
-s "$I:v  
/* (non-Javadoc) xmx;tq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VjM uU"++@  
*/ 4ux5G`oL  
public void sort(int[] data) { <t@*[Aw  
int[] temp=new int[data.length]; ID+k`nP  
mergeSort(data,temp,0,data.length-1); Mwk_S Cy  
} cBf{R^>Fd  
^C| 9K>M  
private void mergeSort(int[] data,int[] temp,int l,int r){ _oVA0@#n  
int mid=(l+r)/2; ?{")Wt  
if(l==r) return ; =@  
mergeSort(data,temp,l,mid); T^G<)IX`c  
mergeSort(data,temp,mid+1,r); N\&;R$[9:  
for(int i=l;i<=r;i++){ ,^C;1ph  
temp=data; RyD$4jk+T"  
} X;>} ;LiK  
int i1=l; Ih"Ol(W  
int i2=mid+1; H;&t"Ql.  
for(int cur=l;cur<=r;cur++){ .w)t<7 y  
if(i1==mid+1) %;?3A#  
data[cur]=temp[i2++]; A@'W $p?5r  
else if(i2>r) E=trJge  
data[cur]=temp[i1++]; !2Iwur u  
else if(temp[i1] data[cur]=temp[i1++]; ?\r3 _  
else z59J=?|  
data[cur]=temp[i2++]; ~-i?=  
} *4y r7~S5  
} tpK4 gjf  
RL9BB.  
} !,"G/}'^;  
axOy~%%c  
改进后的归并排序: OG`O i^2  
0VPa;{i/  
package org.rut.util.algorithm.support; z(eAwmuli  
u;}B4Rx  
import org.rut.util.algorithm.SortUtil; S}O\<6&  
u)pBFs<dn  
/** czRh.kz,  
* @author treeroot :nEV/"#F  
* @since 2006-2-2 .x%SbG<k{  
* @version 1.0 T,>e\  
*/ DboqFh#]=h  
public class ImprovedMergeSort implements SortUtil.Sort { $@wkQ%  
r%n[PK^(  
private static final int THRESHOLD = 10; TD7ONa-,  
`I$A;OPK7  
/* k#[s)Ja?s  
* (non-Javadoc) !o!04_  
* T7'$A!c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )_?$B6hf,&  
*/ KW<CU'  
public void sort(int[] data) { Um<vsR  
int[] temp=new int[data.length]; -Ma"V  
mergeSort(data,temp,0,data.length-1); tEs$+b  
} V.1sZYA9  
=T]OYk  
private void mergeSort(int[] data, int[] temp, int l, int r) { ")OLmkC  
int i, j, k; $ 1ZY Vw  
int mid = (l + r) / 2; l?[DO?m+R  
if (l == r) _3S{n=9  
return; dz 2d`=`3  
if ((mid - l) >= THRESHOLD) FoQk  
mergeSort(data, temp, l, mid); lR!$+atW  
else *Rd&4XG  
insertSort(data, l, mid - l + 1); a=dN.OB}F7  
if ((r - mid) > THRESHOLD) y"ck;OQD  
mergeSort(data, temp, mid + 1, r); p3'+"sFU  
else &EOh}O<  
insertSort(data, mid + 1, r - mid); Ui&$/%Z|  
X;NTz75  
for (i = l; i <= mid; i++) { %Z4=3?5B"9  
temp = data; V^i3:'  
} T\>=o]  
for (j = 1; j <= r - mid; j++) { ,}0pK\Y>$  
temp[r - j + 1] = data[j + mid]; !TF VBK  
} L')zuI  
int a = temp[l]; <9~qAq7^  
int b = temp[r]; aJ5R0Y,  
for (i = l, j = r, k = l; k <= r; k++) { %ZK}y{u\  
if (a < b) { t/g}cR^Q  
data[k] = temp[i++]; (1^(V)@  
a = temp; |*$_eb  
} else { n6f|,D!?  
data[k] = temp[j--]; Y<v55m-  
b = temp[j]; -E7\ .K3  
} 25L{bcng  
} lLhCk>a  
} %Y TIS*+0  
|.A>0-']M  
/** ?H&p zY~H  
* @param data `O/)q^m1L  
* @param l L/I-(08!Y:  
* @param i 0bE_iu>f'  
*/ _f`m/l  
private void insertSort(int[] data, int start, int len) { KJiwM(o  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >. Y ~F(  
} 6_Kz}PQ  
} q}jf&xUWzH  
} $((<le5-)  
} ZE^de(Fm  
p98lu'?@  
堆排序: @j6D#./7j  
~a$% a  
package org.rut.util.algorithm.support; _,^sI%  
j4h 7q<  
import org.rut.util.algorithm.SortUtil; ?HY0@XILI  
dQ[lXV[}v  
/** }W<L;yD  
* @author treeroot mI# BQE`p6  
* @since 2006-2-2 EB#z\  
* @version 1.0 yl}Hr*  
*/ ZeO>Ag^  
public class HeapSort implements SortUtil.Sort{ Dfea<5~^z  
`4CRpz  
/* (non-Javadoc) <T wq{kt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s@$AYZm_  
*/ >BX_Bou  
public void sort(int[] data) { 1 wG1\9S  
MaxHeap h=new MaxHeap(); llzl-2` /  
h.init(data); #lO;G k{  
for(int i=0;i h.remove(); ?P5D!b:(  
System.arraycopy(h.queue,1,data,0,data.length); fHigLL0B  
} I9 E@2[=!  
RA6D dqT~  
private static class MaxHeap{ C\{4<:<_&  
!cZsIcIe  
void init(int[] data){ xn"g_2Hi  
this.queue=new int[data.length+1]; ^tv*I~>J!  
for(int i=0;i queue[++size]=data; {x8`gP\H  
fixUp(size); XP7A.I#q0  
} 0\+Qi?&  
} ? _W*7<  
z+b~#f3  
private int size=0; 181P;R=}<  
t`AD9 H"\!  
private int[] queue; CqoL5qt  
J.<m@\U  
public int get() { j- A|\:   
return queue[1]; g=pDC+  
} /Yh8r1^2tZ  
P}5aN_v \  
public void remove() { *%O1d.,  
SortUtil.swap(queue,1,size--); _5zR!|\^  
fixDown(1); -K j CPc  
} 9hv\%_>o  
file://fixdown =vFI4)$-  
private void fixDown(int k) { Cn,jLy  
int j; =8iM,Vl3  
while ((j = k << 1) <= size) { AKpux,@xB  
if (j < size %26amp;%26amp; queue[j] j++; s+[=nau('w  
if (queue[k]>queue[j]) file://不用交换 {t 7 M  
break; O!g> f  
SortUtil.swap(queue,j,k); :* 'i\  
k = j; <fw[7=_)^  
} ql#K72s  
} h %nZKhm  
private void fixUp(int k) { !hq7R]TC+  
while (k > 1) { |0&S>%=  
int j = k >> 1; J.-#:OZ  
if (queue[j]>queue[k]) &0#qy9wx  
break; p k/#+r;  
SortUtil.swap(queue,j,k); )6(mf2&  
k = j; ~_raI7,  
} Dihk8qJ/6  
} b &JPLUr  
;#;X@BhS  
} HV sIbQS  
s#Le`pGoW  
} Ev()2 80  
%$cwbh-{{  
SortUtil: ?eu=0|d  
3]!(^N>V  
package org.rut.util.algorithm; r[gV`khka  
+q4T];<  
import org.rut.util.algorithm.support.BubbleSort; '.iUv#j4Sh  
import org.rut.util.algorithm.support.HeapSort; EgY]U1{  
import org.rut.util.algorithm.support.ImprovedMergeSort; PQfx0n,  
import org.rut.util.algorithm.support.ImprovedQuickSort; v uJ~Lg{  
import org.rut.util.algorithm.support.InsertSort; }$7Hf+G  
import org.rut.util.algorithm.support.MergeSort; {*|yU"  
import org.rut.util.algorithm.support.QuickSort; mz#(\p=T  
import org.rut.util.algorithm.support.SelectionSort; hE=cgO`QU  
import org.rut.util.algorithm.support.ShellSort; %pMW5]H  
$]Q_x?  
/** zYep V  
* @author treeroot TqlUe@E  
* @since 2006-2-2 +@!9&5S A  
* @version 1.0 / g&mDYV|  
*/ lu>>~vy6  
public class SortUtil { t*DM^. @  
public final static int INSERT = 1; T1x$v,)8x  
public final static int BUBBLE = 2; F;zmq%rK  
public final static int SELECTION = 3; =3}+f-6"'  
public final static int SHELL = 4; Dk4Wj"LS  
public final static int QUICK = 5; ZK13[_@9  
public final static int IMPROVED_QUICK = 6; Z?GC+hG`  
public final static int MERGE = 7; aqMZ%~7  
public final static int IMPROVED_MERGE = 8; <q!{<(:  
public final static int HEAP = 9; >uQ!B/C!  
9u:MF0:W  
public static void sort(int[] data) { z` sH  
sort(data, IMPROVED_QUICK); l/TH"z(  
} We" "/X  
private static String[] name={ |sI^_RdBv  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )N}xKw|  
}; PKwx)! Rz  
Kkd7D_bZ*  
private static Sort[] impl=new Sort[]{ c`iSe$eS  
new InsertSort(), .D7\Hao  
new BubbleSort(), o]]Q7S=  
new SelectionSort(), #0mn_#-P)  
new ShellSort(), ~[[a7$_4  
new QuickSort(), ] 03!K E  
new ImprovedQuickSort(), `dj/Uk  
new MergeSort(), _ p?q/-[4  
new ImprovedMergeSort(), { }>"f]3  
new HeapSort() s#d>yx_b  
}; bT8BJY%+  
Vbwbc5m}  
public static String toString(int algorithm){ M HgS5b2  
return name[algorithm-1]; >`6^1j(3  
} g'mkhF(  
lRO4- y  
public static void sort(int[] data, int algorithm) { ftK.jj1:  
impl[algorithm-1].sort(data); }$b/g  
} /WM : Bj   
>CYg\vas!  
public static interface Sort { i4->XvC  
public void sort(int[] data); V,>#!zUv  
} / {A]('t  
BkIvoW_  
public static void swap(int[] data, int i, int j) { "U yw7  
int temp = data; Q,s,EooIx  
data = data[j]; <H$CCo  
data[j] = temp; 8x+K4B"oe  
} >Vn!kN6\  
} H#1/H@I#  
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