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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。 7m|`tjQ1  
插入排序: 1P[I}GW#  
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package org.rut.util.algorithm.support; [Krm .)  
'DCKD4@C/  
import org.rut.util.algorithm.SortUtil; ig{A[7qN  
/** :"M9*XeHO  
* @author treeroot 0kU3my]  
* @since 2006-2-2 ~/j$TT"  
* @version 1.0 Jh37pI  
*/ <X:Ud&\  
public class InsertSort implements SortUtil.Sort{ J 6(~>g  
=7 Jy  
/* (non-Javadoc) 0hrCG3k.91  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M|/oFV  
*/ |rr$U  
public void sort(int[] data) { 1YJ_1VJ  
int temp; RDUT3H6~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zW%>"y  
} Z{Vxr*9oO  
} p//T7r s  
} SQh+5  
XMt u"K  
} I*^5'N'  
C-Nuy1o  
冒泡排序: M:R8<.{  
_^_5K(Uq  
package org.rut.util.algorithm.support; C1h#x'k  
Gx.P ]O3  
import org.rut.util.algorithm.SortUtil; j(0Ilx|7v  
{/-y>sm  
/** Z8&4z.6_  
* @author treeroot [dl+:P:zc  
* @since 2006-2-2 ec`bz "1  
* @version 1.0 bRWIDPh  
*/ Dq?E\  
public class BubbleSort implements SortUtil.Sort{  ci`zR9Ks  
7e1dEgn  
/* (non-Javadoc) gh TcB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (jMtN?&0H-  
*/ fi=0{  
public void sort(int[] data) { Tak t_N  
int temp; Ks#A<! ;=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (@+h5@J[`I  
if(data[j] SortUtil.swap(data,j,j-1); "\7v  
} E_~x==cb  
} '0Lov]L  
} O]t\B *%}  
} E(_ KN[}S  
O#vn)+Y,*  
} xPt*CB  
y`4{!CEyLW  
选择排序: Z(p*Z,?u  
'fIHUw|  
package org.rut.util.algorithm.support; wtSvJI~o)  
Zb."*zL  
import org.rut.util.algorithm.SortUtil; ^00{Hd6  
(VyA6a8  
/** b4 CF`BG  
* @author treeroot 6a*83G,k  
* @since 2006-2-2 gY!N3 *:  
* @version 1.0 -^Xy%  
*/ r?pZ72 q  
public class SelectionSort implements SortUtil.Sort { 34z+INkX  
1fY>>*oP  
/* je,c7ZFO  
* (non-Javadoc) *hF^fxLbl  
* qEQAn/&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B!}BM}r  
*/ 9*\g`fWc}{  
public void sort(int[] data) { 4d`+CD C  
int temp; Q4?EZ_O  
for (int i = 0; i < data.length; i++) { )Q]w6he3  
int lowIndex = i; +Rqbf  
for (int j = data.length - 1; j > i; j--) { BxdX WO  
if (data[j] < data[lowIndex]) { UW6VHA>  
lowIndex = j; :H?f*aw  
} &RW`W)0;  
} =IZ[_ /@  
SortUtil.swap(data,i,lowIndex); 9 Kbw GmSU  
} KQ{Lt?S  
} I8u!\F  
NEV p8)w  
} >3PMnI  
b+{r! D}~  
Shell排序: `\N]wlB2/b  
uw33:G  
package org.rut.util.algorithm.support; ^=+e?F`:{  
CZ(`|;BC*  
import org.rut.util.algorithm.SortUtil; l5k?De_(x  
BvK QlT  
/** TQc@lR!  
* @author treeroot /e1(? 20  
* @since 2006-2-2 ){P^P!s$  
* @version 1.0 W`M6J}oG  
*/ :q (&$  
public class ShellSort implements SortUtil.Sort{  3-|3`(  
`/4:I  
/* (non-Javadoc) F*` t"7Lm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6kR\xP]Kr  
*/ 8(lR!!=q  
public void sort(int[] data) { m`}{V5;  
for(int i=data.length/2;i>2;i/=2){ y=Q!-~5|fF  
for(int j=0;j insertSort(data,j,i); C6jR=@42Q  
} zzIr2so  
} K_ke2{4Jm  
insertSort(data,0,1); (=c1  
} gU;&$  
3t" 4TjAy  
/** S3Y2O x  
* @param data O{]9hm(tN  
* @param j >jTp6tu,  
* @param i ~h)&&' a  
*/ 2SG$LIV 9Y  
private void insertSort(int[] data, int start, int inc) { :iPy m}CE  
int temp; Y; ) .+si  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F9flSeN  
} f p[,C1U  
} NM#- Af*pg  
} -VT+O+9_A  
1m@^E:w  
} 1^G{tlA-  
9Q.#\  
快速排序: "%6/a7S  
W?Ww2Lo%Y  
package org.rut.util.algorithm.support; =L]Q2V}  
 5@!st  
import org.rut.util.algorithm.SortUtil; j !H^-d}q  
n<7q`tM#  
/** ,"2TArC'z  
* @author treeroot p $`92Be/  
* @since 2006-2-2 <q2?S  
* @version 1.0  Mps5Vv  
*/ bPbb\|u0d  
public class QuickSort implements SortUtil.Sort{ +-$Ko fnM  
rS8 w\`_  
/* (non-Javadoc) c&nh>oN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $XnPwOj  
*/ |`/TBQz:r  
public void sort(int[] data) { v|';!p|  
quickSort(data,0,data.length-1); [1yq{n=  
} {*m?Kc7k  
private void quickSort(int[] data,int i,int j){ j+IrqPKC^  
int pivotIndex=(i+j)/2; EHf\L  
file://swap L=; -x9  
SortUtil.swap(data,pivotIndex,j); vX|UgK?2^  
#]Y>KX2HG  
int k=partition(data,i-1,j,data[j]); /RnTQ4   
SortUtil.swap(data,k,j); }hpm O-  
if((k-i)>1) quickSort(data,i,k-1); \}0-^(9zd  
if((j-k)>1) quickSort(data,k+1,j); 4,p;Km&  
DGESba\2+  
} z(y*hazK  
/** ;3eKqr0  
* @param data C~% 1w%nn  
* @param i #U mF-c  
* @param j  t+uE  
* @return ne}+E  
*/ Dh4 6o|P  
private int partition(int[] data, int l, int r,int pivot) { iUk-'   
do{ _l`e#XbG  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); I^\&y(LJF  
SortUtil.swap(data,l,r); bpAv1udX-W  
} w*9br SK  
while(l SortUtil.swap(data,l,r); WiL2  
return l; oPf)be| #  
} x3+oAb@o/  
Hy:V`>  
} <6TT)t<h  
J5Z%ImiT^O  
改进后的快速排序: @D^^_1~  
=<@2#E)  
package org.rut.util.algorithm.support; $lA V6I.  
ji1HV1S  
import org.rut.util.algorithm.SortUtil; )m3Uar  
e!-,PU9+  
/** uE/T2BX*  
* @author treeroot :e1o<JgPt  
* @since 2006-2-2 BAj-akc f  
* @version 1.0 [jdFA<Is  
*/ ) /vhclkb  
public class ImprovedQuickSort implements SortUtil.Sort { h5_G4J{1  
hY5WJ;  
private static int MAX_STACK_SIZE=4096; gU^$Sx7'  
private static int THRESHOLD=10; ~[o 4a'  
/* (non-Javadoc) }T^cEfX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '7Nr8D4L  
*/ l ASL8O&\  
public void sort(int[] data) { w.\w1:d  
int[] stack=new int[MAX_STACK_SIZE]; gJiK+&8I  
|'ln?D:&  
int top=-1; 1 2++RkL#  
int pivot; V-I(WzR9y  
int pivotIndex,l,r; LH 3}d<{  
NgCuFL(Ic  
stack[++top]=0; _\PNr.D 8  
stack[++top]=data.length-1; =p^He!  
W6T|iZoV"r  
while(top>0){ /yz=Cjoz  
int j=stack[top--]; iqQUtE]E_  
int i=stack[top--]; xqXDxJlns  
h eaRX4  
pivotIndex=(i+j)/2; "LYh7:0s!k  
pivot=data[pivotIndex]; .x`M<L#M(  
w;}@'GgL  
SortUtil.swap(data,pivotIndex,j); FlfI9mm  
8(.mt/MR  
file://partition x^|Vaf  
l=i-1; )#a[-.OI  
r=j; TSAU?r\P  
do{ )b<k#(i@#  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &1l=X]%  
SortUtil.swap(data,l,r); >&g}7d%  
} IW8+_#d  
while(l SortUtil.swap(data,l,r); ANIz, LS  
SortUtil.swap(data,l,j); HkV1sT  
Q9d`zR]  
if((l-i)>THRESHOLD){ E3@QI?n^^  
stack[++top]=i; Wk:hFHs3  
stack[++top]=l-1; 9jN)I(^D6  
} <R%;~){  
if((j-l)>THRESHOLD){ P o jmC  
stack[++top]=l+1; i |{Dd%4vK  
stack[++top]=j; "G-1>:   
} @prG%vb"  
-/_L*oYli  
} :Ih|en^w  
file://new InsertSort().sort(data); KbL V' %D  
insertSort(data); )!g{Sbl  
} ] 2DH;  
/** SVjl~U-^  
* @param data  hjO*~  
*/ 9ukg}_Hx  
private void insertSort(int[] data) { ZpUCfS)|&  
int temp; <<D$+@wxm  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @i^~0A#q*  
} ut >4U'.H  
} n~g)I&  
} /(O$(35  
{;2vmx9  
} 0y&I/2  
2_Wg!bq  
归并排序: :V2bS  
I@Xn3oN  
package org.rut.util.algorithm.support; m/NdJMoN=  
T[= S$n -'  
import org.rut.util.algorithm.SortUtil; 4tSv{B/}  
JbB}y'c4}=  
/** _C\[DR0n  
* @author treeroot _(m't n>   
* @since 2006-2-2 XC7%vDIt  
* @version 1.0 UpXz&k  
*/ \c[IbL07  
public class MergeSort implements SortUtil.Sort{ 3]-_q"Co4f  
<o2r~E0r3  
/* (non-Javadoc) kt4d; 4n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x.1-)\  
*/ 10#oG{ 9  
public void sort(int[] data) { #d{=\$=  
int[] temp=new int[data.length]; Bx[rC  
mergeSort(data,temp,0,data.length-1); %!ebO*8q  
} {_RWVVVe  
(;. AS  
private void mergeSort(int[] data,int[] temp,int l,int r){ fjnTe  
int mid=(l+r)/2; ~.%K/=wK@  
if(l==r) return ; Ifk#/d  
mergeSort(data,temp,l,mid); 9+,R`v  
mergeSort(data,temp,mid+1,r); bslrqUk_`=  
for(int i=l;i<=r;i++){ Lp5U"6y  
temp=data; 8Ry74|`=R  
} 6 \B0^  
int i1=l; 2cu#lMq  
int i2=mid+1; (wc03,K^  
for(int cur=l;cur<=r;cur++){ m8623D B"  
if(i1==mid+1) fAZiC+  
data[cur]=temp[i2++]; JO14KY*%  
else if(i2>r) |%~+2m  
data[cur]=temp[i1++]; 39 {{7(hh  
else if(temp[i1] data[cur]=temp[i1++]; I *c;H I  
else 4[ryKPa,  
data[cur]=temp[i2++]; ~}Z\:#U  
} Oo?,fw  
} = sAn,ri  
?}Z1(it0  
} \b[9ebME  
i?Ss:v^  
改进后的归并排序: ~_9"3,~o5  
P)dL?vkK  
package org.rut.util.algorithm.support; [6jbgW~E  
Qy#)Gxp  
import org.rut.util.algorithm.SortUtil; 8\<jyJ  
,? E&V_5  
/** c= UU"  
* @author treeroot _DRrznaw  
* @since 2006-2-2 2?Ye*-  
* @version 1.0 l0*Gb  
*/ t+CWeCp,  
public class ImprovedMergeSort implements SortUtil.Sort { ;0ME+]`"3  
\EbbkN:D  
private static final int THRESHOLD = 10; %/kyT%1  
^EVc95|Z  
/* Q5S,{ ZeT  
* (non-Javadoc) ]L2Oz  
* h72UwJ2rw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FDR1 Gy  
*/ wHz?#MW 3L  
public void sort(int[] data) { xChI ,~i  
int[] temp=new int[data.length]; R)!`JKeO/  
mergeSort(data,temp,0,data.length-1); Dj-s5pAW  
} N132sN2   
'#\D]5  
private void mergeSort(int[] data, int[] temp, int l, int r) { $#o1MX  
int i, j, k; OLq 0V3m  
int mid = (l + r) / 2; Z.&\=qiY  
if (l == r) b syq*  
return; ETv9k g  
if ((mid - l) >= THRESHOLD) H;<!TX.zD  
mergeSort(data, temp, l, mid); TOl}U  
else B%<e FFV\  
insertSort(data, l, mid - l + 1); Hr;h4J  
if ((r - mid) > THRESHOLD) Z\X'd_1!  
mergeSort(data, temp, mid + 1, r); Bt^K]F\  
else 9 -h.|T2il  
insertSort(data, mid + 1, r - mid); i~=s^8n`l  
OKuD"   
for (i = l; i <= mid; i++) { +R$?2  
temp = data; ed~R>F>  
} ,W5.:0Y;f[  
for (j = 1; j <= r - mid; j++) { upn8n vy4(  
temp[r - j + 1] = data[j + mid]; 1uG=`k8'k  
} O]u",J5  
int a = temp[l];  :,]S}R  
int b = temp[r]; u7]<=*V]  
for (i = l, j = r, k = l; k <= r; k++) { jThbeY[  
if (a < b) { Wz=OSH7"f  
data[k] = temp[i++]; B5=3r1Ly  
a = temp; RpQ*!a~O  
} else { vX1uR]A[  
data[k] = temp[j--]; }*;EFR6'  
b = temp[j]; Hw_o w?  
} \tt'm\_  
} Jgx8-\ 8  
} D(Ix!G/  
3A0_C?E  
/** (9.yOc4  
* @param data l:e9y$_)  
* @param l $+VgDe5{S  
* @param i ??xlA-E  
*/ MQw9X  
private void insertSort(int[] data, int start, int len) { Lo3-X  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jn=ug42d  
} 19y 0$e_V  
} |^5/(16  
} #tz8{o?ebN  
} _ VKgs]Y  
g5}7y\  
堆排序: # cWHDRLX  
h;Mu[`  
package org.rut.util.algorithm.support; Q_lu`F|  
HYIRcY  
import org.rut.util.algorithm.SortUtil; 6o lV+  
u8uW9 <  
/** y9 uVCR  
* @author treeroot D0M!"c>\  
* @since 2006-2-2 wiV&xl  
* @version 1.0 &wGg6$  
*/ '5WN,Vy8.  
public class HeapSort implements SortUtil.Sort{ kgc.8  
M)=|<h"F  
/* (non-Javadoc) `i4I!E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PJwEA  
*/ _W+Q3Jx-(  
public void sort(int[] data) { S-,kI  
MaxHeap h=new MaxHeap(); '}zT1F* p=  
h.init(data); MgP{W=h2  
for(int i=0;i h.remove(); n2;(1qr  
System.arraycopy(h.queue,1,data,0,data.length); 0# UAjT3  
} ;qG1r@o  
>0M:&NMda  
private static class MaxHeap{ wy\o*P9mG)  
Zih5/I  
void init(int[] data){ e@+v9Bs]q  
this.queue=new int[data.length+1]; aKOf;^@  
for(int i=0;i queue[++size]=data; B{4"$Mi  
fixUp(size); JOgmF_(>Z  
} "?+UI   
} Yoe les-  
yHtGp%j  
private int size=0; yI *M[0  
Nq  U9/  
private int[] queue; {;;eOxOP|  
8}J(c=4Gk  
public int get() { d^_itC;-,  
return queue[1]; YBeZN98Nt  
} 'bG1U`v=3  
;7)OSGR  
public void remove() { a\Tr!Be,  
SortUtil.swap(queue,1,size--); @!,D%]8"  
fixDown(1); m_~y   
} :Z]/Q/$  
file://fixdown EqYz,%I%  
private void fixDown(int k) { @t "~   
int j; \(wn@/yP'  
while ((j = k << 1) <= size) { !+%Az*ik  
if (j < size %26amp;%26amp; queue[j] j++; %oMWcgsdJi  
if (queue[k]>queue[j]) file://不用交换 -.^=Z!=M  
break; YcEtgpz@  
SortUtil.swap(queue,j,k); *C tsFS~  
k = j; tc!!W9{69  
} t.gq5Y.[  
} eR(\s_`  
private void fixUp(int k) { m`[oT\  
while (k > 1) { C8! 8u?k  
int j = k >> 1; k{zs578h2  
if (queue[j]>queue[k]) 0@JilGk1u  
break; ~r{\WZ.  
SortUtil.swap(queue,j,k); G*8+h  
k = j; 'nC3:U  
} TB ;3`  
} hwEZj`9  
f%`*ba" v  
} TW'E99wG  
{d&X/tT  
} >_|Z{:z]d.  
6~:W(E}  
SortUtil: >DPds~k  
8<E!rn-  
package org.rut.util.algorithm;  muK'h`  
YlZYS'_  
import org.rut.util.algorithm.support.BubbleSort; CwTS/G  
import org.rut.util.algorithm.support.HeapSort; ZX~>uf\n  
import org.rut.util.algorithm.support.ImprovedMergeSort; > C*?17\  
import org.rut.util.algorithm.support.ImprovedQuickSort; )x_W&*oZ  
import org.rut.util.algorithm.support.InsertSort; krEH`f  
import org.rut.util.algorithm.support.MergeSort; {<''OwQF~+  
import org.rut.util.algorithm.support.QuickSort; ,v$2'm)V  
import org.rut.util.algorithm.support.SelectionSort; j]@ x Q,y  
import org.rut.util.algorithm.support.ShellSort; A{DIp+  
}a #b$]Y  
/** !q7;{/QM6  
* @author treeroot e]dPF[?7  
* @since 2006-2-2 }"g21-T^  
* @version 1.0 Z>>gXh<e[  
*/ ! 4qps$p{  
public class SortUtil { `g4Ekp'Rp[  
public final static int INSERT = 1; P ],)  
public final static int BUBBLE = 2; onWYT}c{  
public final static int SELECTION = 3; q>D4ma^  
public final static int SHELL = 4; kB$,1J$q  
public final static int QUICK = 5; z1{E:~f  
public final static int IMPROVED_QUICK = 6; m-Z'K_oQ  
public final static int MERGE = 7; ecSdU>  
public final static int IMPROVED_MERGE = 8; N>cp>&jV  
public final static int HEAP = 9; @Le ^-v4  
Sug~FV?k$e  
public static void sort(int[] data) { Q)%8NVs  
sort(data, IMPROVED_QUICK); s$DT.cvO  
} pZ@W6}  
private static String[] name={ k Nf!j  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" R.T?ZF  
}; k?|F0e_  
w ufKb.4`  
private static Sort[] impl=new Sort[]{ *'`3]!A  
new InsertSort(), a\[fC=]r:  
new BubbleSort(), ZhJ|ZvJ  
new SelectionSort(), ,,C~j`F  
new ShellSort(), $Kw"5cm  
new QuickSort(), 56O<CgJF<  
new ImprovedQuickSort(), 9rf|r 3  
new MergeSort(), DoCQFSL  
new ImprovedMergeSort(), yw3U"/yw  
new HeapSort() zx]M/=7,V#  
}; A0N ;VYv  
$nD k mKl  
public static String toString(int algorithm){ |\r\i&|g1  
return name[algorithm-1]; l<)JAT;P  
} FDGKMGZ  
Zkb,v!l  
public static void sort(int[] data, int algorithm) { ['N#aDh.?  
impl[algorithm-1].sort(data); ,9l!fT?iH  
} YWBP'Mo  
+[l{C+p  
public static interface Sort { bM3'm$34  
public void sort(int[] data); MgK(gL/&[  
} s)&R W#:X  
<812V8<!  
public static void swap(int[] data, int i, int j) { =L; n8~{@y  
int temp = data; h|/*yTuN.y  
data = data[j]; qI%9MI;BV  
data[j] = temp; xyJgHbml  
} #( Yb lY  
} o _,$`nEJ  
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