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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。 RIWxs Zt  
插入排序: eBZXI)pPh  
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package org.rut.util.algorithm.support; TV)h`\|Z*  
M'7f O3&|  
import org.rut.util.algorithm.SortUtil; 2e+UM$  
/** SE@LYeC}dE  
* @author treeroot \tf <B\oa  
* @since 2006-2-2 !`Fxa4i>  
* @version 1.0 >K_(J/&p  
*/ [_R~%Yh+'E  
public class InsertSort implements SortUtil.Sort{ *v;2PP[^  
? &o2st  
/* (non-Javadoc) $ Xv*,Bq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nsu@h  
*/ Xb|:vr\v  
public void sort(int[] data) { bn|I> e  
int temp; CKYc\<zR0l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :%l TU  
} 27eooY1  
} Jj; L3S  
} MK%9:wZ  
~qiJR`Jj  
} =_.l8IYX$%  
dN$0OS`s[  
冒泡排序: f(>p=%=O  
J{.{f  
package org.rut.util.algorithm.support; 0.`/X66;V  
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import org.rut.util.algorithm.SortUtil; NO*u9YH?  
((YMVe  
/** v [wb~uw\  
* @author treeroot :}He\V  
* @since 2006-2-2 9P1OP Xv*p  
* @version 1.0 +SP{hHa^  
*/ nHM~  
public class BubbleSort implements SortUtil.Sort{ ]J1dtN=  
VQc_|z_ s  
/* (non-Javadoc) \\iQEy<i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &PR5q 7  
*/ rN<0 R`4sE  
public void sort(int[] data) { R3 -n>V5o  
int temp; k0OYJ/  
for(int i=0;i for(int j=data.length-1;j>i;j--){ u(z$fG:g  
if(data[j] SortUtil.swap(data,j,j-1); qk%;on&`  
} ih58 <Up5  
} {c6=<Kv  
} `!ob GMTQ<  
} }s7$7  
hr#M-K  
} {BP{C=p  
Tm~" IB*  
选择排序: \o z#l'z  
Eq%}  
package org.rut.util.algorithm.support; \{Y 7FC~  
&C `Gg<  
import org.rut.util.algorithm.SortUtil; E(*0jAvO[z  
wg9t)1k{e  
/** *D'22TO[[!  
* @author treeroot :NhO2L  
* @since 2006-2-2 G!Op~p@Jm  
* @version 1.0 7BE>RE=)  
*/ ux=w!y;}  
public class SelectionSort implements SortUtil.Sort { ]N~2 .h  
)1]ZtU  
/* GA$V0YQX  
* (non-Javadoc) .T}Wdn g  
* QVv#fy1"6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q 1U\D  
*/ h=W:^@G  
public void sort(int[] data) { 1vS#K=sb  
int temp; Ow+GS{-q  
for (int i = 0; i < data.length; i++) { ] ]u s %  
int lowIndex = i; 1auIR/=-  
for (int j = data.length - 1; j > i; j--) { KI.q@zO6|  
if (data[j] < data[lowIndex]) { 6/f7<  
lowIndex = j; k9<;woOBO  
} qLO4#CKCL6  
} +jAGGv^)  
SortUtil.swap(data,i,lowIndex); R4[N:~Z$|  
} oI?3<M^  
} S(k3 `;K  
.yMEIUm  
} OC_+("N  
~k"=4j9  
Shell排序: piJu+tUy  
NN%*b yK  
package org.rut.util.algorithm.support; h){0rX@:&  
e6`Jbu+J<f  
import org.rut.util.algorithm.SortUtil; 0.\/\V:H6  
qSM|hHDo)  
/** cutuDZ  
* @author treeroot Q$a{\*[:+  
* @since 2006-2-2 +! ]zA4x  
* @version 1.0 TEP,Dq  
*/ T]^62(So  
public class ShellSort implements SortUtil.Sort{  Fe#  1  
xzdf^Ce  
/* (non-Javadoc) GF"hx`zyJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {dhXIs  
*/ _:ReN_0  
public void sort(int[] data) { -Fi`Z$  
for(int i=data.length/2;i>2;i/=2){ KWq+PeB5TS  
for(int j=0;j insertSort(data,j,i); B?OFe'*  
} '3R`lv   
} $By< $  
insertSort(data,0,1); 8^kGS-+^  
} KKb,d0T[  
IY_iB*T3jt  
/** ]P9l jwR  
* @param data y;4OY  
* @param j 4(#'_jS  
* @param i (j%~u&+-  
*/ MS nG3]{z  
private void insertSort(int[] data, int start, int inc) { %2}-2}[>  
int temp; v3*_9e  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D.r<QO~6B  
} 2+RUTOv/d  
} VRVO-Sk  
} .H escg/S  
Rm2yPuOU}A  
} _jvxc'6  
[xK3F+  
快速排序: R#s )r  
E7WK (  
package org.rut.util.algorithm.support; n"h `5p5'  
]>W6 bTK  
import org.rut.util.algorithm.SortUtil; UBv,=v  
df*#!D7oz  
/** EZgq ?l~5O  
* @author treeroot 59 h]UX=  
* @since 2006-2-2 Ka'=o?'B5  
* @version 1.0 nB_?ckj,  
*/ C>]0YO k2  
public class QuickSort implements SortUtil.Sort{ raW>xOivR  
g!|=%(G=  
/* (non-Javadoc) k 9_`(nx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^dI424  
*/ kPKB|kP\  
public void sort(int[] data) { ,j#XOy`mzy  
quickSort(data,0,data.length-1); V"[g.%%Y  
} ; 8_{e3s  
private void quickSort(int[] data,int i,int j){ hE &xE;  
int pivotIndex=(i+j)/2; G ?9"Y%  
file://swap EW}Bzh>b  
SortUtil.swap(data,pivotIndex,j); ##q2mm:a9P  
zU,9T  
int k=partition(data,i-1,j,data[j]); 3Lfqdqj  
SortUtil.swap(data,k,j); 0^v`T%|fTX  
if((k-i)>1) quickSort(data,i,k-1); KsddA  
if((j-k)>1) quickSort(data,k+1,j); 'Y?"{HZ  
kT|dUw9G  
} \9.bt:k@OT  
/** xn?a. 3b'  
* @param data m1j*mtu  
* @param i <NHH^M\N  
* @param j R$EW4]j  
* @return 2d>z1%'  
*/ 9,c(y sv"  
private int partition(int[] data, int l, int r,int pivot) { I^* Nqqq  
do{ 0!D4pvlt  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >|J`s~?  
SortUtil.swap(data,l,r); \0A3]l  
} ]q\b,)4 e  
while(l SortUtil.swap(data,l,r); <c*FCblv  
return l; Z/G ev"p  
} w3N[9w?1  
0}<|7?  
}  hz{`h  
BfXgh'Z~  
改进后的快速排序: .7O*pJ2(H  
0q^>ZF-@  
package org.rut.util.algorithm.support; x!hh"x  
# '=a=8-$  
import org.rut.util.algorithm.SortUtil; jY  &k  
)i6mzzj5  
/** &`h{i K7  
* @author treeroot !'Ak&j1:`  
* @since 2006-2-2 *$#W]bO  
* @version 1.0 <g-9T-Ky  
*/ .Q<>-3\K  
public class ImprovedQuickSort implements SortUtil.Sort { "x%Htq@  
_qU4Fadgm  
private static int MAX_STACK_SIZE=4096; C=-=_>Q,L<  
private static int THRESHOLD=10; =-tw5], L  
/* (non-Javadoc) 3\AU 72-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sXqz+z$*  
*/ bkRLC_/d  
public void sort(int[] data) { -<6\1J  
int[] stack=new int[MAX_STACK_SIZE]; } j<)L,  
__uA}f Zp  
int top=-1; j*d yp  
int pivot; :{{F *FM;  
int pivotIndex,l,r; GeI-\F7b  
Cwr~HY  
stack[++top]=0; _ "E$v&_  
stack[++top]=data.length-1; {M3qLf~z#C  
S&e0u%8mc  
while(top>0){ I) rCd/  
int j=stack[top--]; uMUBh 80,L  
int i=stack[top--]; 9X[kEl  
.GbX]?dN  
pivotIndex=(i+j)/2; W=lyIb{?^0  
pivot=data[pivotIndex]; mD/9J5:  
88Ey12$  
SortUtil.swap(data,pivotIndex,j); 6e(Qwt  
xP_cQwm`1  
file://partition a@8v^G  
l=i-1; AW%50V  
r=j; [<7@{;r  
do{ 0mpX)S  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #akpXdXs  
SortUtil.swap(data,l,r); "33Fv9C#bK  
} 0Vj4+2?L5;  
while(l SortUtil.swap(data,l,r); bw(a6qKK  
SortUtil.swap(data,l,j); 'QJ:`)z  
90Pl$#cb2  
if((l-i)>THRESHOLD){ Fiv3 {.  
stack[++top]=i; ,Z aRy$?  
stack[++top]=l-1; p5Z"|\  
} <5d ~P/,  
if((j-l)>THRESHOLD){ FO+Zue.RS  
stack[++top]=l+1; Mo y <@+  
stack[++top]=j; svsqg{9z  
} @>u}eB>Kn  
,NOsFO-`<  
} ~Io7]  
file://new InsertSort().sort(data); D!@Ciw  
insertSort(data); Yf:IKY  
} Wfu(*  
/** '>NCMB{*  
* @param data 7jxslI&F  
*/ bW$,?8(  
private void insertSort(int[] data) { )}g(b=  
int temp; XYjV.j\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H  >j  
} \4&fxe  
} u&^b~# T  
} i=ea ?eT`  
{mm)ay|M  
} [I0:=yJ+  
C'G/AU  
归并排序: 6RG)` bu  
iyA'#bE-  
package org.rut.util.algorithm.support; C\\~E9+  
:=}BN  
import org.rut.util.algorithm.SortUtil; .@2m07*1  
-] L6=  
/** v;BV@E0}x  
* @author treeroot 0[A[U_b  
* @since 2006-2-2 t=rEt>n~L  
* @version 1.0 mkMq  
*/ yu;+o3WlK  
public class MergeSort implements SortUtil.Sort{ WeJl4wF  
` w=>I  
/* (non-Javadoc)  >d*iD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^b/ Z)3  
*/ 8N!b>??  
public void sort(int[] data) { " f <Z=c  
int[] temp=new int[data.length]; Q8C_9r/:N>  
mergeSort(data,temp,0,data.length-1); WM Fb4SUR  
} SlgN&{ Bk  
-5 RD)(d  
private void mergeSort(int[] data,int[] temp,int l,int r){ ccNd'2P  
int mid=(l+r)/2; * ;-*x6  
if(l==r) return ; +?F[/?s5qz  
mergeSort(data,temp,l,mid); "&%I)e^  
mergeSort(data,temp,mid+1,r); 0+iu(VbF  
for(int i=l;i<=r;i++){ Y}x>t* I  
temp=data; ht7l- AK  
} 00'%EYO  
int i1=l; :X0k]p  
int i2=mid+1; M:XSQ["6>V  
for(int cur=l;cur<=r;cur++){ ,C K{F  
if(i1==mid+1) qT ,Te  
data[cur]=temp[i2++]; fg s!v7  
else if(i2>r) 1cxrH+N  
data[cur]=temp[i1++]; lAi6sPG)0  
else if(temp[i1] data[cur]=temp[i1++]; j:<n+:H C  
else *Y,x|F  
data[cur]=temp[i2++]; $()5VM b  
} 9Kpa><  
} U}&2k  
C+'/>=>a.  
} t'?.8}?)I&  
V:qSy#e  
改进后的归并排序: b$4"i XSQ  
!i{aMxUP  
package org.rut.util.algorithm.support; 8u"!dq  
'U1R\86M  
import org.rut.util.algorithm.SortUtil; MTsM]o  
?: N @!jeJ  
/** M}d_I+  
* @author treeroot ahuGq'  
* @since 2006-2-2 ?/BqD;{?I  
* @version 1.0 K$>%e36Cc  
*/ ->sm+H-*  
public class ImprovedMergeSort implements SortUtil.Sort { {F3xJ[  
p rYs $j  
private static final int THRESHOLD = 10; oT^{b\XN  
5XO;N s  
/* Q7*SE%H  
* (non-Javadoc) YX=a#%vrl  
* kv3E4,<9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3_txg>P"  
*/ sA/pVU  
public void sort(int[] data) { %oq{L]C(rf  
int[] temp=new int[data.length]; 5Eg1Q YVt  
mergeSort(data,temp,0,data.length-1); 1|RANy  
} =5Q]m6-SgV  
<PapskO>  
private void mergeSort(int[] data, int[] temp, int l, int r) { 8s"%u )  
int i, j, k; Q(lo{AFc  
int mid = (l + r) / 2; uZM{BgXXD  
if (l == r) 4NGA/ G  
return; F=`AY^u0  
if ((mid - l) >= THRESHOLD) /h+8A' ,  
mergeSort(data, temp, l, mid); s1=X>'q  
else :QpuO1Gu  
insertSort(data, l, mid - l + 1); [ p{#XwN  
if ((r - mid) > THRESHOLD) s8wmCzB~  
mergeSort(data, temp, mid + 1, r); 61. Brp.eP  
else J!0DR4=Xi  
insertSort(data, mid + 1, r - mid); !6BW@GeF]  
:ZTc7 }  
for (i = l; i <= mid; i++) { :axRoRg  
temp = data; xGu r  
} |s"nM<ZNZ  
for (j = 1; j <= r - mid; j++) { Nd`%5%'::  
temp[r - j + 1] = data[j + mid]; !;0U,!WI  
} 9  TvV=  
int a = temp[l]; -}=i 04^  
int b = temp[r]; ,u!*2cWN  
for (i = l, j = r, k = l; k <= r; k++) { G;&-\0>W  
if (a < b) { 1KMLG=  
data[k] = temp[i++]; y&Mr=5:y  
a = temp; >_e]C}QUr  
} else { K&nE_.kbl  
data[k] = temp[j--]; v 0 }@  
b = temp[j]; M4zm,>?K  
} Ey_" ~OB  
} ZYI{i?Te#  
} /]=C{)8  
wp#'nO  
/** L%BNz3:Dt  
* @param data TatpXN\  
* @param l >SML"+>  
* @param i TcIcS]w%  
*/ [K9'<Qnu  
private void insertSort(int[] data, int start, int len) { KAC6Snu1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); IOb*GTb  
} :E_g"_  
} xgpi-l  
} 9^,Lc1"M>  
} x97 j  
0uWR<,]  
堆排序: 3{""58  
,8:(OB|a  
package org.rut.util.algorithm.support; &QDW9 Mi  
Z3{>yYR+  
import org.rut.util.algorithm.SortUtil; 7B b9 t  
v5By:z  
/** Av"R[)  
* @author treeroot "$N#p5  
* @since 2006-2-2 L!rw[x  
* @version 1.0 L{hnU7sY  
*/ VTG9$rQZ  
public class HeapSort implements SortUtil.Sort{ n;(\5{a  
]F;f`o  
/* (non-Javadoc) k *Q<3@S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YQ39 A_e g  
*/ zN!ZyI$nqP  
public void sort(int[] data) { Q,p}:e  
MaxHeap h=new MaxHeap(); Db)?i?o}t  
h.init(data); ?0)&U  
for(int i=0;i h.remove(); F">Qpgt  
System.arraycopy(h.queue,1,data,0,data.length); oX0D  
} q8s0AN'@t'  
O J/,pLYu  
private static class MaxHeap{ Ko;{I?c  
0}$Hi  
void init(int[] data){ b+@JY2dvj  
this.queue=new int[data.length+1]; 0|$v-`P$  
for(int i=0;i queue[++size]=data; CPP` qt%f  
fixUp(size); nyBJb(5"B  
} c/zJv*}x ?  
} WpF2)R}G=  
+)j$|x~(A  
private int size=0; c%&: 6QniZ  
!'mq ?C=  
private int[] queue; _acE:H  
0Uz\H0T1  
public int get() { UG2nX3?  
return queue[1]; p /#$io  
} Rniq(FA x  
rypTKT|U;  
public void remove() { {jYOs l  
SortUtil.swap(queue,1,size--); T2SP W@#Z3  
fixDown(1); 4T!+D  
} Q.]}]QE   
file://fixdown c8L~S/t  
private void fixDown(int k) { %7"X(Ts7B  
int j; iTag+G4*  
while ((j = k << 1) <= size) { "kMguK}c  
if (j < size %26amp;%26amp; queue[j] j++; wm)#[x #  
if (queue[k]>queue[j]) file://不用交换 bKrhIU[  
break; D+]a.& {p  
SortUtil.swap(queue,j,k); 3 |hHR  
k = j; qxFB%KqU  
} eU<]o< \Qo  
} O+?<h{"  
private void fixUp(int k) { c3:,Ab|  
while (k > 1) { UVw~8o9s  
int j = k >> 1; ag*mG*Z  
if (queue[j]>queue[k]) :cq9f2)  
break; EX?MA6U  
SortUtil.swap(queue,j,k); ^1Zeb$Nw'  
k = j; } p&&_?  
} 4W3\P9p=  
} 6`v7c!7  
\RvvHty-V  
} jFA{+Yr1  
"Qja1TQ  
} CAcS~ "  
"\}@gV#r$A  
SortUtil: u>TZt]h8  
-[6z 1"*  
package org.rut.util.algorithm; *d"DA[(  
epU:  
import org.rut.util.algorithm.support.BubbleSort; \ C+(~9@|  
import org.rut.util.algorithm.support.HeapSort; #a`a$A  
import org.rut.util.algorithm.support.ImprovedMergeSort; 0KGY\,ae:;  
import org.rut.util.algorithm.support.ImprovedQuickSort; `e(vH`VZ  
import org.rut.util.algorithm.support.InsertSort; Xlb0/T<g!  
import org.rut.util.algorithm.support.MergeSort; .Fnwm}  
import org.rut.util.algorithm.support.QuickSort; UEozAY  
import org.rut.util.algorithm.support.SelectionSort; yqi^>Ce0  
import org.rut.util.algorithm.support.ShellSort; "FTfk  
f. FYR|%tq  
/** SE),":aY  
* @author treeroot ``OD.aY^s  
* @since 2006-2-2 2 !At2P2  
* @version 1.0 VUhbD  
*/ SQqD:{#g"  
public class SortUtil { L{(QpgHZ  
public final static int INSERT = 1; #B:hPZM1  
public final static int BUBBLE = 2; \ gLHi~  
public final static int SELECTION = 3; |b*? qf  
public final static int SHELL = 4; ^4,a8`  
public final static int QUICK = 5; Sqo : -  
public final static int IMPROVED_QUICK = 6; Y=?yhAw  
public final static int MERGE = 7; hi0R.V&  
public final static int IMPROVED_MERGE = 8; L+CyQq  
public final static int HEAP = 9; TZ2=O<Kj  
:'*DPB-  
public static void sort(int[] data) { 7vABq(  
sort(data, IMPROVED_QUICK); ( YQWbOk  
} *,Za6.=  
private static String[] name={ {%IExPJ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e_/b2"{  
};  w~ [b*$  
f|R"u W +  
private static Sort[] impl=new Sort[]{ u%/goxA  
new InsertSort(), ]R=,5kK3  
new BubbleSort(), RTv qls  
new SelectionSort(), lWqrU1Sjl  
new ShellSort(), # g_Bx  
new QuickSort(), #/I[Jqf  
new ImprovedQuickSort(), ]|sAK%/  
new MergeSort(),  nv0]05.4  
new ImprovedMergeSort(), t`+'r}=d  
new HeapSort() h}]fn A  
}; K^ B%/T]d  
J,zO2572u  
public static String toString(int algorithm){ 4"xPr[=iG  
return name[algorithm-1]; cCa|YW^j  
} NcP.;u;`  
gS:A'@&  
public static void sort(int[] data, int algorithm) { Oi:<~E[kz.  
impl[algorithm-1].sort(data); ?c7*_<W5  
} A?`jnRo=\  
Zc!@0  
public static interface Sort { e'=MQ,EWd  
public void sort(int[] data); +3&z N(  
} qA!]E^0*Ke  
ei6AV1| p  
public static void swap(int[] data, int i, int j) { h;-yU.(w  
int temp = data; q+[Sb G&  
data = data[j]; H)>@/"j;  
data[j] = temp; #( 1j#\  
} ZeEWp3vW  
} ^;Sy. W&`  
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