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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。 HcO5?{2  
插入排序:  yekRwo|  
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package org.rut.util.algorithm.support; C +@ i  
9p*-?kPb  
import org.rut.util.algorithm.SortUtil; c<tmj{$  
/** g+|Bf&_  
* @author treeroot 5;Ia$lm=y  
* @since 2006-2-2 e /94y6*>  
* @version 1.0 oAz<G  
*/ |Fp'/~|w2d  
public class InsertSort implements SortUtil.Sort{ M/B/b<['  
VDiOO  
/* (non-Javadoc) 3 Gd|YRtk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kqf8=y  
*/ e1 ^l.>2d6  
public void sort(int[] data) { or.\)(m#(  
int temp; EfKntrom[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s=U\_koyH  
} e5OVq ,  
} )X%oXc&C|  
} jL_5]pzJ  
OjATSmZ@@  
} J6auUm` `  
NCDxcz;Gb  
冒泡排序: f{_)rsqf  
~U%j{8uH  
package org.rut.util.algorithm.support; f4 O]`U  
"tX7%(  
import org.rut.util.algorithm.SortUtil; AT ymKJ  
uO"8aD`W  
/** 3#mE( `|P  
* @author treeroot +XQP jg  
* @since 2006-2-2 '!@A}&]  
* @version 1.0 k =|K|  
*/ ]bu9-X&T&  
public class BubbleSort implements SortUtil.Sort{ UN(3i(d  
8]]@S"ZM,\  
/* (non-Javadoc) ArX]L$ D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -( Kh.h  
*/ 0%H24N 9.  
public void sort(int[] data) { 8<c' x]~  
int temp; kQ[Jo%YT?E  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5p{25N_t  
if(data[j] SortUtil.swap(data,j,j-1); k.Gl4 x  
} i'iO H|s  
} `#p< rfe  
} Y{j7Q4{  
} mF~ys{"t  
)@,N7Y1h  
} MYu`c[$jZ  
{83C,C-  
选择排序: Rv,Mu3\~#c  
jm+ blB^%K  
package org.rut.util.algorithm.support; bq: [Nj  
?-S8yqe  
import org.rut.util.algorithm.SortUtil; ?(>k,[n  
Z,SY N?@  
/** L9$&-A9ix  
* @author treeroot Qxky^:B  
* @since 2006-2-2 8XlU%a6x  
* @version 1.0 y,V6h*x2  
*/ qL,ka  
public class SelectionSort implements SortUtil.Sort { jQ)L pjS1  
`ReGnT[  
/* &M$Bt} <  
* (non-Javadoc) 4?v$<=#21*  
* m|lM.]2_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S7Znz@  
*/ ^glX1 )  
public void sort(int[] data) { *|^,DGfQ6  
int temp; L,WkJe3  
for (int i = 0; i < data.length; i++) { X8i[fk1.R  
int lowIndex = i; X:U=MWc>  
for (int j = data.length - 1; j > i; j--) { jmSt?M0.xV  
if (data[j] < data[lowIndex]) { ~Po\ En  
lowIndex = j; }iMXXXBOT  
} MCM/=M'y  
} [#IBYJ.6  
SortUtil.swap(data,i,lowIndex); @`5QG2  
} s:3aRQ%  
} q?(A!1(u  
7&h\l6}Yh  
} #t){4J  
)sRN!~  
Shell排序: RXUA!=e  
y?"$(%3|  
package org.rut.util.algorithm.support; 4*p_s8> >  
!$:0E y(S  
import org.rut.util.algorithm.SortUtil; l _kg3e4  
T..N*6<X  
/** |'V<>v.v  
* @author treeroot ?~VWW<lR  
* @since 2006-2-2 LG/=+[\{E  
* @version 1.0 [?|l X$<  
*/ <3SFP3^:  
public class ShellSort implements SortUtil.Sort{ ImUQ*0  
gmF_~"^34  
/* (non-Javadoc) R`Ys;g/!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J)7,&Gc6  
*/ WL IDw@fv  
public void sort(int[] data) { "VT{1(]t  
for(int i=data.length/2;i>2;i/=2){ #hy5c,}>  
for(int j=0;j insertSort(data,j,i); )#b}qc#`  
} JEK%yMj  
} \j2 : 6]Hm  
insertSort(data,0,1); Gx(KN57D  
} K^z5x#Yj  
!L0E03')k  
/** Pqr Ou  
* @param data bik] JIM  
* @param j Xhq? 7P$3  
* @param i mC{!8WC@k  
*/ 3oppV_^JdT  
private void insertSort(int[] data, int start, int inc) { h8iaJqqvJ  
int temp; ?{@!!te@3v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2g ?Jb5)  
} r 48;_4d)D  
} }2iKi(io*  
} ~n8Oyr  
OUBgBr   
} 8^P2GG'+-  
n3HCd- z  
快速排序: M@!]U:5~V  
fJF8/IQ4  
package org.rut.util.algorithm.support; +s+PnZ%0V  
y0&V$uv/  
import org.rut.util.algorithm.SortUtil; ,{`o/F/  
K*HVn2OV  
/** ${TB2q}%  
* @author treeroot xvdnEaWe$  
* @since 2006-2-2 }OX>(  
* @version 1.0 T_(e(5  
*/ %~B)~|h  
public class QuickSort implements SortUtil.Sort{ lk+=2 6>  
Y>dg10=  
/* (non-Javadoc) r$3~bS$]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xy z\;3  
*/ mTXNHvv  
public void sort(int[] data) { Ivt)Eg  
quickSort(data,0,data.length-1); ^)C$8:@  
} HkfSx rTgQ  
private void quickSort(int[] data,int i,int j){ -?%{A%'  
int pivotIndex=(i+j)/2; ]mD=Br*r~  
file://swap <Hr@~<@~  
SortUtil.swap(data,pivotIndex,j); H z < M  
eLt Cxe  
int k=partition(data,i-1,j,data[j]); A\PV@w%A i  
SortUtil.swap(data,k,j); *]>OCGsr  
if((k-i)>1) quickSort(data,i,k-1); qG2\` +v  
if((j-k)>1) quickSort(data,k+1,j); ~qLhZR\g^  
(W}i287  
} +}G>M=t::  
/** @=<TA0;LL  
* @param data ]uj.uWD  
* @param i /xrq'|r?C  
* @param j 9^Vx*KVrU  
* @return On96N|  
*/ whg4o|p  
private int partition(int[] data, int l, int r,int pivot) { 1o6J9kCq^3  
do{ .}hZ7>4-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Nh7!Ah  
SortUtil.swap(data,l,r); H{tOCYyD  
} ^)0{42!]  
while(l SortUtil.swap(data,l,r); ;u-< {2P  
return l; G/RheH G  
} O,xAu}6f+  
5Ret,~Vs9|  
} _6ax{:/Q  
C;:1CK  
改进后的快速排序: [2j (\vC!  
EV7+u0uN&Q  
package org.rut.util.algorithm.support; tL4]6u  
PJ11LE  
import org.rut.util.algorithm.SortUtil; XY t8vJ  
|Nd. '|g,  
/** gZ=9Y:$  
* @author treeroot MPEBinE?  
* @since 2006-2-2 my\oC^/9  
* @version 1.0 9q@YE_ji  
*/ @XG`D>%k  
public class ImprovedQuickSort implements SortUtil.Sort { Exs _LN  
OFAqP1o{$  
private static int MAX_STACK_SIZE=4096; Ug'nr  
private static int THRESHOLD=10; tIy/QN_42  
/* (non-Javadoc) H2_>Av{m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xg5@;p  
*/ ^fiRRFr[  
public void sort(int[] data) {  AQNx%  
int[] stack=new int[MAX_STACK_SIZE]; gl\{QcI8<  
X'Il:SK  
int top=-1; P:h4  
int pivot; Y&Vbf>Hi+  
int pivotIndex,l,r; nhxd  
*M!YQ<7G^d  
stack[++top]=0; /ykxVCvAt  
stack[++top]=data.length-1; y?4=u,{C  
L$?~TY  
while(top>0){ "=TTsxyM6P  
int j=stack[top--]; PaI63 !  
int i=stack[top--]; exN#!& ;  
pQ`L=#WM  
pivotIndex=(i+j)/2; #K*q(ei,7h  
pivot=data[pivotIndex]; ]T$w7puaJ  
=<uz'\Ytv%  
SortUtil.swap(data,pivotIndex,j); E1Aa2  
X10TZ  
file://partition T ]nR XW$  
l=i-1; tJfN6  
r=j; ~(P\F&A(&  
do{ ^ /eSby  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &`y_R'  
SortUtil.swap(data,l,r); DQXx}%Px  
} `l40awGCz  
while(l SortUtil.swap(data,l,r); WSccR  
SortUtil.swap(data,l,j); D(?#oCCA  
%ycT}Lu  
if((l-i)>THRESHOLD){ 7ib<Cb>K  
stack[++top]=i; QN5N h s  
stack[++top]=l-1; FOyfk$  
} ?bi^h/ f  
if((j-l)>THRESHOLD){ 4KB?g7_*  
stack[++top]=l+1; -mdPqVIJn:  
stack[++top]=j; 5]ob;tAm  
} 6j![m+vo%  
pODo[Rkq  
} :WTvP$R  
file://new InsertSort().sort(data); } +Z;zm@/6  
insertSort(data); \:28z  
} <xz-7EqbwX  
/** }eK*)  
* @param data {D.0_=y~2  
*/ c=E.-  
private void insertSort(int[] data) { $\H46Ji  
int temp; #Jb$AA! z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0$uS)J\;K  
} 2Rt ZTn  
} ho<#i(  
} (jMp`4P  
]c+'SJQ  
} sTYl' Ieg  
~qxc!k!w4  
归并排序: ZXkAw sr  
CtxK{:  
package org.rut.util.algorithm.support; :/Zh[Q@EG  
|Q+v6r(<zZ  
import org.rut.util.algorithm.SortUtil; RH'R6  
{$.{VE+v5  
/** l)bUHh5[  
* @author treeroot $nN$"  
* @since 2006-2-2 sIM`Q%  
* @version 1.0 :v48y.Ij7s  
*/ 3<lDsb(}0A  
public class MergeSort implements SortUtil.Sort{ evP`&23tP  
)E|Bb=%  
/* (non-Javadoc) m 9Q{ )?J7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2/WXdo  
*/ G_RK3E[FK  
public void sort(int[] data) { 0eIR)#j*  
int[] temp=new int[data.length]; $S/ 8T  
mergeSort(data,temp,0,data.length-1); 1uE[ %M  
} ^a r9$$~/!  
=cY]cPO  
private void mergeSort(int[] data,int[] temp,int l,int r){ B dUyI_Ks:  
int mid=(l+r)/2; wVB8PO8  
if(l==r) return ; ==9Ez  
mergeSort(data,temp,l,mid); Kxn=iv^Ir  
mergeSort(data,temp,mid+1,r); kM@,^`&  
for(int i=l;i<=r;i++){ Nq8A vBwo4  
temp=data; sa])^mkq(  
} FeJ5^Gh.  
int i1=l; ^ TS\x/P  
int i2=mid+1; |,crQ'N'  
for(int cur=l;cur<=r;cur++){ hR2.w/2j  
if(i1==mid+1) "~ 6B C  
data[cur]=temp[i2++]; ~f:fOrLE#  
else if(i2>r) ah.Kb(d:  
data[cur]=temp[i1++]; sh RvwE[  
else if(temp[i1] data[cur]=temp[i1++]; dEn hNPeRl  
else wO9<An  
data[cur]=temp[i2++]; >Ww F0W9?  
} V^D#i(5  
} 9v A`\\9  
-=Hr|AhE  
} .0 K8h:I  
g o@}r<B$  
改进后的归并排序: +oa]v1/W  
&W%TY:Da|  
package org.rut.util.algorithm.support; zq#o8))4X  
~*qGH  
import org.rut.util.algorithm.SortUtil; 4C$,X!kzF  
J&?kezs  
/** aNz%vbh\  
* @author treeroot RDbA"e5x  
* @since 2006-2-2 }`X$ '  
* @version 1.0 )8_0d)  
*/ qvT9d7x  
public class ImprovedMergeSort implements SortUtil.Sort { JeO(sj$e  
!rXyw`6N  
private static final int THRESHOLD = 10; Q{>{ e3z}  
m\Dbb.vBvW  
/* e]rWR  
* (non-Javadoc) kweypIB  
* U*6r".sz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pp}j=$&j\  
*/ < B'BlqTS  
public void sort(int[] data) { j/9'L^]  
int[] temp=new int[data.length]; #vIF]Y  
mergeSort(data,temp,0,data.length-1); g n'. 9";j  
} *t~( _j  
E")82I  
private void mergeSort(int[] data, int[] temp, int l, int r) { xY@V.  
int i, j, k; HQ]g{JVld\  
int mid = (l + r) / 2; b,I$.&BD  
if (l == r) IAg#YFI  
return; { c]y<q  
if ((mid - l) >= THRESHOLD) f 1]1ZOb  
mergeSort(data, temp, l, mid); +}% 4]O;  
else 'H97D-86/  
insertSort(data, l, mid - l + 1); Lg-Sxz}P!  
if ((r - mid) > THRESHOLD) )y._]is)b  
mergeSort(data, temp, mid + 1, r); mI}1si=$  
else @'dtlY5;  
insertSort(data, mid + 1, r - mid); ,zO!`|I  
u>d,6 !  
for (i = l; i <= mid; i++) { $O=m/l $  
temp = data; iFpJ /L  
} U#-89.x  
for (j = 1; j <= r - mid; j++) { 0Ez(;4]3  
temp[r - j + 1] = data[j + mid]; ' m^nKG$"  
} (t[sSl  
int a = temp[l]; 'ip2|UG  
int b = temp[r]; wjEyU:  
for (i = l, j = r, k = l; k <= r; k++) { f(SK[+aqW  
if (a < b) { L/*D5k%J  
data[k] = temp[i++]; `|&#=hl~  
a = temp; {mOQRAKl  
} else { C6` Tck!  
data[k] = temp[j--]; }o,-@R~  
b = temp[j]; q# C;iK4  
} ?2q4dx 0  
} r&rip^40  
} r{mj[N'@  
y) .dw(  
/**  4>R)2g  
* @param data ]Y;5U  
* @param l ka=EOiX.  
* @param i KATu7)e&~^  
*/ K&'Vd@  
private void insertSort(int[] data, int start, int len) { u,~/oTg O  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); XU5GmGu_+  
} nI_UL  
} Gg TrIF  
} 3q-Xj:FP  
} 3sD/4 ?  
_ ci8!PP  
堆排序: ssY5g !%  
*e,GXU@  
package org.rut.util.algorithm.support; nq%GLUH   
XlJA}^e  
import org.rut.util.algorithm.SortUtil; uz;zmK  
HRg< f= oz  
/** D}T+X ;u)K  
* @author treeroot S; Fj9\2)I  
* @since 2006-2-2 +/ U6p!  
* @version 1.0 / n@by4;W  
*/ IeT1Jwe  
public class HeapSort implements SortUtil.Sort{ Lq#$q>!K  
3[Z7bhpV  
/* (non-Javadoc) 6Eu"T9 (  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) / NB;eV?  
*/ Y]neTX [ef  
public void sort(int[] data) { @)x8<  
MaxHeap h=new MaxHeap(); Nhrh>x[wJ  
h.init(data); FA$1&Fu3Y  
for(int i=0;i h.remove(); fI }v}L^  
System.arraycopy(h.queue,1,data,0,data.length);  % Z-B{I(  
} p<8Ga.kiN  
4l?"zv1  
private static class MaxHeap{ mvXIh";  
D<J, 3(Yu  
void init(int[] data){ VRA0p[  
this.queue=new int[data.length+1]; 7-j=he/  
for(int i=0;i queue[++size]=data; u&Cu"-%=M  
fixUp(size); q~6((pWi|  
} [DSD[[ z[  
} M ]uO%2  
XAb-K?)   
private int size=0; LWIPq"  
l~'NqmXe  
private int[] queue; JG*Lc@Q  
859ID8F  
public int get() { 56!/E5qgW  
return queue[1]; i1ss}JJp*  
} V[fcP;   
!_pryNcb  
public void remove() { {Ax{N  
SortUtil.swap(queue,1,size--); KiYz]IM$4  
fixDown(1); 2>h.K/pC  
} |P`:NAf2  
file://fixdown "2>_eZ#b  
private void fixDown(int k) { G21cJi*  
int j; a9niXy}a(  
while ((j = k << 1) <= size) {  b@m\ca  
if (j < size %26amp;%26amp; queue[j] j++; t8\XO j  
if (queue[k]>queue[j]) file://不用交换 e9@7GaL`"S  
break; kZJ.G  
SortUtil.swap(queue,j,k); <yz&> +9,  
k = j; ^*A8 NdaB  
} G~fM!F0   
} 1@vlbgLr@  
private void fixUp(int k) { W*/0[|n*  
while (k > 1) { wR*>9LjeG  
int j = k >> 1; >YuiCf?c7  
if (queue[j]>queue[k]) <Zn -P  
break; qt{{q  
SortUtil.swap(queue,j,k); eV)'@ 8p  
k = j; dyN Kok#  
} FEzjP$  
} afNqK~  
s+l3]Hd  
} /swNhDQ"o  
Hd9vS"TN]  
} ERQc1G]3Dd  
(@"5:M  
SortUtil: xQK;3b  
]| PDsb"e  
package org.rut.util.algorithm; 1Zj NRg=  
!.}ZlA  
import org.rut.util.algorithm.support.BubbleSort; /;rPzP4K6  
import org.rut.util.algorithm.support.HeapSort; <4m@WG  
import org.rut.util.algorithm.support.ImprovedMergeSort; {} gr\  
import org.rut.util.algorithm.support.ImprovedQuickSort; wSwDhOX=  
import org.rut.util.algorithm.support.InsertSort; cN(Toj'`  
import org.rut.util.algorithm.support.MergeSort; ~qP_1() ?  
import org.rut.util.algorithm.support.QuickSort; QaYUcma~n  
import org.rut.util.algorithm.support.SelectionSort; 4Cn% h)w  
import org.rut.util.algorithm.support.ShellSort; xG|T_|?  
U1!#TD)@  
/** W-UMX',0zS  
* @author treeroot -fILXu  
* @since 2006-2-2 ]/klKqz  
* @version 1.0 |*5803h  
*/ Tb@r@j:V  
public class SortUtil { HZDeQx`*s  
public final static int INSERT = 1; YR)^F|G  
public final static int BUBBLE = 2; +\vN#xDz  
public final static int SELECTION = 3; Ax4;[K\Q  
public final static int SHELL = 4; e.|t12)L "  
public final static int QUICK = 5; g(F2IpUm/  
public final static int IMPROVED_QUICK = 6; |A H@W#7j  
public final static int MERGE = 7; GlT/JZ9  
public final static int IMPROVED_MERGE = 8; '?E@H.""  
public final static int HEAP = 9; ?CpM.{{s  
`_{,4oi  
public static void sort(int[] data) { woU3WS0  
sort(data, IMPROVED_QUICK); <9Ytv|t@0  
} ;|CG9|p  
private static String[] name={ h{PJ4U{W  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?&b"/sRS  
}; ^P*+0?aFr  
YgkQF0+  
private static Sort[] impl=new Sort[]{ tQ2S*]"f  
new InsertSort(), %S%0/  
new BubbleSort(), cdfnM%`>\  
new SelectionSort(), zOL*XZ0c  
new ShellSort(), 1[". z{V3*  
new QuickSort(), R9Y{kk0M  
new ImprovedQuickSort(), M[&p[P@  
new MergeSort(), Sr6?^>A@t  
new ImprovedMergeSort(), vLcOZ^iK  
new HeapSort() c=IjR3F  
}; i# Fe`Z ~J  
'/F~vSQsR  
public static String toString(int algorithm){ 9/5 EyV  
return name[algorithm-1]; JjQTD-^  
} 5R#:ALwX:  
'i8?]` T  
public static void sort(int[] data, int algorithm) { "(E%JAwZ^W  
impl[algorithm-1].sort(data); ?D=%k8)Y  
} O}[){*GG=  
~*G}+Ur$2  
public static interface Sort { bKPjxN?!9  
public void sort(int[] data); _dn*H-5hO  
} G)7J$4R  
`>{S?t<  
public static void swap(int[] data, int i, int j) { g);.".@"  
int temp = data; RS  Vt  
data = data[j]; `qr.@0whP  
data[j] = temp; 8)&J oPN  
} KU;m.{  
} ~RnBs`&!  
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