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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。 [MhKR }a  
插入排序: ;-#2p^  
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package org.rut.util.algorithm.support; 1o`zAJ8|2  
4A"3C  
import org.rut.util.algorithm.SortUtil; ``4e&  
/** ;x%"o[[>  
* @author treeroot :y'EIf  
* @since 2006-2-2 EM QGP<[  
* @version 1.0 fG9 ;7KG  
*/ @ <(4J   
public class InsertSort implements SortUtil.Sort{ $>Qq 7  
g&z8t;@  
/* (non-Javadoc) E@,m +  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N,W ?}  
*/ 'HKDGQl`  
public void sort(int[] data) { z36wWdRa6  
int temp; GXC,p(vbE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YLJ^R$pi  
} ckGmwYP9  
} 6S`0<Z;;/  
} cX7 O*5C  
]-8WM5\qJM  
} @@JyCUd  
*:bexDH  
冒泡排序: P9`R~HO'`  
s@Dln Du .  
package org.rut.util.algorithm.support; B6=?Qp/f  
v%:VV*MxF  
import org.rut.util.algorithm.SortUtil; &^2SdF  
ZtyDip'x  
/** qG@YNc  
* @author treeroot -M/j&<;LW  
* @since 2006-2-2 TyDh\f!w  
* @version 1.0 =PU($  
*/ \~RDvsSD  
public class BubbleSort implements SortUtil.Sort{ WP2=1"X63  
G/*;h,NbNr  
/* (non-Javadoc) DA1?M'N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .7]P-]uOZ  
*/ o?Aj6fNY?  
public void sort(int[] data) { Z1#u&oX  
int temp; 2ah%,o  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Mg #yl\v  
if(data[j] SortUtil.swap(data,j,j-1); I4W@t4bZ  
} $=iw<B r  
} _%q~K (::  
} Jsl2RdI  
} c {/J.  
> vdmN]  
} >H^#!eaqw  
e2f+Fv 9  
选择排序: v3#,Z!  
8Qo'[+4;  
package org.rut.util.algorithm.support; 6<EGH*GQ$  
q`,%L1c4  
import org.rut.util.algorithm.SortUtil; [Ur\^wS  
Y{D%v  
/** ~w a6S?  
* @author treeroot Z:dp/M}  
* @since 2006-2-2 P#O2MiG  
* @version 1.0 f(Y_<%  
*/ /a'1 W/^2  
public class SelectionSort implements SortUtil.Sort { N0H=;CIQ  
V"m S$MN  
/* &\1n=y  
* (non-Javadoc) N+'j on}U  
*  =*&[K^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l|=4FIMD  
*/ sxsb)a  
public void sort(int[] data) { zw[' hqW  
int temp; f. "\~  
for (int i = 0; i < data.length; i++) { xNzGp5H  
int lowIndex = i; Nai5!_'  
for (int j = data.length - 1; j > i; j--) { ?u|@,tQ[  
if (data[j] < data[lowIndex]) { CJ* D  
lowIndex = j; _Z23lF 9  
} 8LbwEKl  
} )\|+G5#`  
SortUtil.swap(data,i,lowIndex); ]QhTxrF"  
} W7^[W.  
} Xx"<^FS[zC  
G@.MP| 2  
} x2rAB5r6  
< cvh1~>(  
Shell排序: 0V4B Q:v  
n:,mo}?X  
package org.rut.util.algorithm.support; e"ehH#i  
OvtE)u l@  
import org.rut.util.algorithm.SortUtil; DMM<,1  
J0?kEr  
/** X*QS/\  
* @author treeroot P( hGkY=(  
* @since 2006-2-2 X_]rtG  
* @version 1.0 BH">#&j[  
*/ O2?C *  
public class ShellSort implements SortUtil.Sort{ 1@DC#2hPr  
9@lWI  
/* (non-Javadoc) KNUK]i&L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m[^lu1\wn  
*/ qOwql(vX  
public void sort(int[] data) { /' + >/  
for(int i=data.length/2;i>2;i/=2){ j{@6y  
for(int j=0;j insertSort(data,j,i); EU$.{C_O(  
} Ks-$:~?5":  
} j,.\QwpU  
insertSort(data,0,1); %up?70  
} ;f[lq^eV  
E5w;75,  
/** 9af.t  
* @param data {'5"i?>s0>  
* @param j O`B,mgT(  
* @param i <h/%jM>9/  
*/ {~3QBMx6  
private void insertSort(int[] data, int start, int inc) { `7CK;NeT  
int temp; [d: u(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0B}4$STOo[  
} H$KO[mW}  
} K:wI'N"N  
} %2?+:R5.  
xT%`"eM}  
} n t}7|h|  
p;O%W@n"  
快速排序: 5 % 2A[B  
}yz>(Pq  
package org.rut.util.algorithm.support; # ]7Lieh[5  
*\sPHz.  
import org.rut.util.algorithm.SortUtil; ;2p+i/sVj  
tAdE<).!  
/** _)M,p@!?=h  
* @author treeroot F$C6( C?  
* @since 2006-2-2 |eqBCZn  
* @version 1.0 \D7bTn  
*/ qqrjI.  
public class QuickSort implements SortUtil.Sort{ V' Gal`  
E>!=~ 7.  
/* (non-Javadoc) bMyld&ga  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e$# *t  
*/ FSIiw#xzH  
public void sort(int[] data) { 5(3O/C{?~  
quickSort(data,0,data.length-1); "& ,ov#  
} IS2cU'   
private void quickSort(int[] data,int i,int j){ CSO'``16  
int pivotIndex=(i+j)/2; &{}Mds  
file://swap jJy:/!i  
SortUtil.swap(data,pivotIndex,j); EB~]6.1  
?sf<cFF  
int k=partition(data,i-1,j,data[j]); 1E+12{~m"i  
SortUtil.swap(data,k,j); F (*B1J2_g  
if((k-i)>1) quickSort(data,i,k-1); gcJ!_KZK  
if((j-k)>1) quickSort(data,k+1,j); $[ {5+*  
g7\ =  
} mdj%zJ8/  
/** `o[l%I\Q  
* @param data JVZ-nHf(9  
* @param i {.p.?  
* @param j /jY u-H+C  
* @return p3I"LY  
*/ 3JCo!n0   
private int partition(int[] data, int l, int r,int pivot) { ]&cnc8tC  
do{ :xd;=;q5  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); . %RM8  
SortUtil.swap(data,l,r); b)LT[>f  
} f7Gn$E|/r;  
while(l SortUtil.swap(data,l,r); d1b] +AG4  
return l; ;cor\ R  
} dzf2`@8#  
eqbN_$>  
} #9vC]Gm  
Nwvlv{k'  
改进后的快速排序: EBj^4=b[  
(WM3(US|  
package org.rut.util.algorithm.support; aurs~  
2u"lc'9v  
import org.rut.util.algorithm.SortUtil; 1F@k9[d~  
=BJe)!b  
/** <W4F`6`x  
* @author treeroot $v^hzC  
* @since 2006-2-2 -@orIwA&  
* @version 1.0 %TB(E<p`  
*/ I6>J.6luF9  
public class ImprovedQuickSort implements SortUtil.Sort { RK3y q$  
$l7^-SK`E  
private static int MAX_STACK_SIZE=4096; 8Zv``t61  
private static int THRESHOLD=10; uqMw-f/  
/* (non-Javadoc) 18X@0e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U{U"%XdO  
*/ } M#e\neii  
public void sort(int[] data) { ,g*!NK_:5t  
int[] stack=new int[MAX_STACK_SIZE]; S@qp_!  
^h(wi`i  
int top=-1; zLI0RI.Pe  
int pivot; }z3j7I  
int pivotIndex,l,r;  g'0CYY  
+#O+%!  
stack[++top]=0; >Vuvbo   
stack[++top]=data.length-1; x#rgFY,TY  
dP5x]'"x  
while(top>0){  @/2Kfr  
int j=stack[top--]; NvR{S /Z  
int i=stack[top--]; (O.%Xbx3  
&#r+a'  
pivotIndex=(i+j)/2; LQ+/|_(.  
pivot=data[pivotIndex]; >I5:@6 Z  
B9v>="F  
SortUtil.swap(data,pivotIndex,j); T1LYJ]5  
80xr zv  
file://partition _z\/{  
l=i-1; /d`"WK,  
r=j; pLMt 2 G  
do{ Sg#XcTG  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G7Nw}cVJ)  
SortUtil.swap(data,l,r); / 3A6xPOg  
} *Gsj pNr-  
while(l SortUtil.swap(data,l,r); +y7z>Fwl  
SortUtil.swap(data,l,j); ua\t5M5  
kaG/8G(  
if((l-i)>THRESHOLD){ BZR{}Aj4pa  
stack[++top]=i; 0[;2dc  
stack[++top]=l-1; X>q`F;W  
} ;KeU f(tH  
if((j-l)>THRESHOLD){ ]hl*6  
stack[++top]=l+1; 12$0-@U  
stack[++top]=j; >)><u4}  
} _)A|JC!jId  
8tY>%A~^z  
} 7& M-^Ev  
file://new InsertSort().sort(data); SI(f&T(  
insertSort(data); | ,8z" g  
} |s8N  
/** M`MxdwR  
* @param data c-LzluWi  
*/ d2\ !tJm  
private void insertSort(int[] data) { Ni$'# W?t  
int temp; Epzg|L1)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f?3-C8 hU  
} NOb`)qb  
} "oP^2|${  
} T j$'B[cv  
!avol/*  
} +WX/4_STV  
}gp@0ri%5  
归并排序: kA :Y^2X'  
, X5.|9  
package org.rut.util.algorithm.support; 6].[z+  
7DB_Z /uU  
import org.rut.util.algorithm.SortUtil; j3-YZKpg  
[KDxB>R<{  
/** Y&|Z*s+ +}  
* @author treeroot X/_I2X  
* @since 2006-2-2 XS<>0YM  
* @version 1.0 Qg>NJ\*Q  
*/ ~.a"jYb7A}  
public class MergeSort implements SortUtil.Sort{ I-#H+\S  
FO{=^I5YA  
/* (non-Javadoc) }=R]<`Sj.j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t)SZ2G1r  
*/ F^!D[:;jK  
public void sort(int[] data) { 2y [Q  
int[] temp=new int[data.length]; JK,MK|  
mergeSort(data,temp,0,data.length-1); (d9~z  
} `Rq=:6U;3  
('J/Ww<  
private void mergeSort(int[] data,int[] temp,int l,int r){ -V$|t<  
int mid=(l+r)/2; >P6"-x,["  
if(l==r) return ; 8R~<$ xz  
mergeSort(data,temp,l,mid); C6+ 5G-Z  
mergeSort(data,temp,mid+1,r); O\}C`CiC  
for(int i=l;i<=r;i++){ YAi-eL67l  
temp=data; {v={q1  
} _H]\  
int i1=l; @T1G#[C~t  
int i2=mid+1; kG^76dAQL  
for(int cur=l;cur<=r;cur++){ ':4cQ4Z  
if(i1==mid+1) ucCf%T\:  
data[cur]=temp[i2++]; ];bRRBEU  
else if(i2>r) mh+T!v$[n)  
data[cur]=temp[i1++]; ew;;e|24  
else if(temp[i1] data[cur]=temp[i1++]; 4&)sROjV=  
else #qRoTtMq 7  
data[cur]=temp[i2++]; _[:6.oNjIe  
} g)Z8WH$;H3  
} q(sTKT[V  
i4D(8;  
} bpu`'Vx  
Iu'9yb  
改进后的归并排序: <,vIN,Kl8/  
f-U zFlU  
package org.rut.util.algorithm.support; kBUkE-~  
!Vpi1N\  
import org.rut.util.algorithm.SortUtil; )k<cd.MX  
U1 `5P!ov  
/** J"gMm@#C4  
* @author treeroot D]]e6gF$e  
* @since 2006-2-2 zCs34=3 D[  
* @version 1.0 HcRw9,I'  
*/ dCx63rF`G  
public class ImprovedMergeSort implements SortUtil.Sort { uYW4$6S 3  
>`QBN1 Y  
private static final int THRESHOLD = 10; ,GOIg|51  
rFzNdiY  
/* W]4Z4&  
* (non-Javadoc) zDF Nx:h  
* GrF4*I`q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >`UqS`YQK  
*/ E2r5Pg  
public void sort(int[] data) { ]|g2V a~-  
int[] temp=new int[data.length]; n{!{,s  
mergeSort(data,temp,0,data.length-1); 39 }e }W"  
} ,;}   
?h4[yp=w  
private void mergeSort(int[] data, int[] temp, int l, int r) { %cn 1d>M+I  
int i, j, k; 6"G(Iq'2t3  
int mid = (l + r) / 2; "L]v:lg3  
if (l == r) ]Ik~TW&  
return; }&=l)\e  
if ((mid - l) >= THRESHOLD) OU%"dmSDk  
mergeSort(data, temp, l, mid); g/.FJ-I*  
else M}o.= Iqa  
insertSort(data, l, mid - l + 1); zNX=V!$  
if ((r - mid) > THRESHOLD) S|tA%2z  
mergeSort(data, temp, mid + 1, r); k*;U?C!  
else 5%2~/ "  
insertSort(data, mid + 1, r - mid); 'S6zkwC]  
EM@|^47$  
for (i = l; i <= mid; i++) { 0bh 6ay4  
temp = data; Z0Sqw  
} Z~Q5<A9Jz  
for (j = 1; j <= r - mid; j++) { 1R8tR#l  
temp[r - j + 1] = data[j + mid]; !O"2)RU1  
} []@@  
int a = temp[l]; y`zdI_!7  
int b = temp[r]; u W,J5!  
for (i = l, j = r, k = l; k <= r; k++) { C '[4jz0xF  
if (a < b) { {2q"9Ox"  
data[k] = temp[i++]; [!%5(Ro_  
a = temp; t`Bk2Cc)+  
} else { } 9zi5 o8  
data[k] = temp[j--]; o=Z:0Ukl]  
b = temp[j]; u_WUJ_  
} E|;>!MMA;  
} S*G^U1Sc+  
} E|9`J00  
=)+^y}xb  
/** gH(#<f@ZI  
* @param data #9(+)~irz`  
* @param l {D8opepO)  
* @param i |Jx:#OM  
*/ ltNI+G  
private void insertSort(int[] data, int start, int len) { v+x<X5u  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z{3`nd,  
} h$`m0-'  
} I@m(}  
} G_=i#Tu[  
} c=tbl|Cq  
}5PC53q  
堆排序: 'yH  
&V+_b$  
package org.rut.util.algorithm.support; $&.(7F^D  
n#"G)+h3#  
import org.rut.util.algorithm.SortUtil; [@qjy*5p  
$A~aNI  
/** ILDO/>n  
* @author treeroot &V axv$v}  
* @since 2006-2-2 !j7mY9x+  
* @version 1.0 AB%i|t  
*/ " l|`LjP5M  
public class HeapSort implements SortUtil.Sort{ [H\0 '  
pSQX  
/* (non-Javadoc) -l}"DP _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S}Wj.l+F  
*/ tOVTHx3E]  
public void sort(int[] data) { ^(  
MaxHeap h=new MaxHeap(); `%[m%Y9h  
h.init(data); c86?-u')  
for(int i=0;i h.remove(); }f;TG:6  
System.arraycopy(h.queue,1,data,0,data.length); /Zs_G=\>  
} &zgliT!If  
TXYO{  
private static class MaxHeap{ z4D)Xy"/  
'J*'{  
void init(int[] data){ +(x(Ybl#  
this.queue=new int[data.length+1]; \h[*oeh  
for(int i=0;i queue[++size]=data; RU/WI<O  
fixUp(size); U= GJuixy  
} =W')jKe0  
} t|V5[n!  
j8Q_s/n  
private int size=0; ^vh!1"T  
PSAEW.L  
private int[] queue; :KC]1_zqR  
x Y$x= )  
public int get() { 5hEA/G  
return queue[1]; ,^ ,R .T  
} m~=VUhPd  
B7qi|Fw  
public void remove() { 1Bs  t|  
SortUtil.swap(queue,1,size--); *lZ V3F  
fixDown(1); rgXX,+cO  
} q}jh>`d  
file://fixdown xC + >R1)  
private void fixDown(int k) { ])qnPoQ<n  
int j; IX 6 jb"  
while ((j = k << 1) <= size) { }Uj-R3]}K  
if (j < size %26amp;%26amp; queue[j] j++; CEkf0%YJ  
if (queue[k]>queue[j]) file://不用交换 p);[;S  
break; d\Up6F  
SortUtil.swap(queue,j,k); jK\kASwG  
k = j; )]w&DNc  
} a%m >v,  
} ]7,0>  
private void fixUp(int k) { 0;1O;JRw  
while (k > 1) { g}6M+QNj  
int j = k >> 1; |2TH[J_a  
if (queue[j]>queue[k]) j."V>p8u$  
break; &N7q 9t  
SortUtil.swap(queue,j,k); Zd)LVc[  
k = j; ,*V%  
} 4j+M<g  
} ?gAwMP(>  
=v|$dDz  
} +5O^{Ce6  
$pPc}M[h  
} 6C"${}S F`  
jN= !Q&^i[  
SortUtil: {LKW%G7  
evE:FiDm(j  
package org.rut.util.algorithm; r;(^]Soz  
OJydt;a  
import org.rut.util.algorithm.support.BubbleSort; o6x8j z  
import org.rut.util.algorithm.support.HeapSort; &sn-;r  
import org.rut.util.algorithm.support.ImprovedMergeSort; YJwI@E(l$  
import org.rut.util.algorithm.support.ImprovedQuickSort; .j)DE}[q>  
import org.rut.util.algorithm.support.InsertSort; Ao\OU}  
import org.rut.util.algorithm.support.MergeSort; 2b\ h@VJt  
import org.rut.util.algorithm.support.QuickSort; ,3G B9  
import org.rut.util.algorithm.support.SelectionSort; oKkDG|IE  
import org.rut.util.algorithm.support.ShellSort; wE9z@\z]  
 R'_F9\  
/** m/g[9Y  
* @author treeroot mm!JNb9(  
* @since 2006-2-2 NU.4_cixb  
* @version 1.0 ,{ 0&NX  
*/ 3# 0Nd"/0  
public class SortUtil { P _Gu~B!Y  
public final static int INSERT = 1; /&=y_%VR  
public final static int BUBBLE = 2; {O=_c|u{N  
public final static int SELECTION = 3; hE\gXb  
public final static int SHELL = 4; |P9MhfN  
public final static int QUICK = 5; g( "[wqgG  
public final static int IMPROVED_QUICK = 6; M_$;"NS+}  
public final static int MERGE = 7; Xa'b @*o&  
public final static int IMPROVED_MERGE = 8; 6m(+X M S  
public final static int HEAP = 9; |gk"~D  
Lrt~Q:z2u  
public static void sort(int[] data) { FgP{  
sort(data, IMPROVED_QUICK); P|fh4b4  
} r;waT@&C  
private static String[] name={ 9,>c;7s X  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?56;<%0  
}; M@. 2b.  
|ns9ziTDI  
private static Sort[] impl=new Sort[]{ L?(1 [jB4G  
new InsertSort(), HZ{DlH;&  
new BubbleSort(), apxq] ! `  
new SelectionSort(), vHymSU/J  
new ShellSort(), Hnvs{KC`  
new QuickSort(), >I/~)B`jhE  
new ImprovedQuickSort(), #zn`)n  
new MergeSort(), y>J6)F =  
new ImprovedMergeSort(), Q^lgtb  
new HeapSort() WH+S d  
}; :G<~x8]k0  
!*k'3r KOW  
public static String toString(int algorithm){ tD,~i"0;  
return name[algorithm-1]; V8%( h[  
} riglEA[^  
FePWr7Ze  
public static void sort(int[] data, int algorithm) { RDqQ6(e"  
impl[algorithm-1].sort(data); :WSszak  
} ]4_)WUS.c  
~X) 1!Sr  
public static interface Sort { 6,p;8I  
public void sort(int[] data); /-ewCCzZV  
} Pz'Z n  
F n*+uk  
public static void swap(int[] data, int i, int j) { =~$)Ieu  
int temp = data; U4y ?z  
data = data[j]; bXWodOSN  
data[j] = temp; 0o?2Sf`L\*  
} <3{ >;^|e  
} #|cr\\2*  
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