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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。 `7zz&f9dDX  
插入排序: A% 9TS/-p  
&B1d+.+  
package org.rut.util.algorithm.support; ]rO`e N[~U  
WoHFt*e2  
import org.rut.util.algorithm.SortUtil; {0+gPTp  
/** ,Drd s"H  
* @author treeroot )cNG)F  
* @since 2006-2-2 "2o,XF  
* @version 1.0 "gADHt=MIR  
*/ qPK3"fzH  
public class InsertSort implements SortUtil.Sort{ _%Sorr  
*-(J$4RNz  
/* (non-Javadoc) n_Px=s!1p@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >wS52ng  
*/ ~@S5*(&8  
public void sort(int[] data) { ( {ads_l  
int temp; XO~xbG7>gZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T]l_B2.  
} yd2v_  
} D642}VD  
} 7afD^H%  
+|Z1U$0g  
} /-TJtR4>  
,i lVt  
冒泡排序: `VCU`Y  
DBYD>UA  
package org.rut.util.algorithm.support; x_CB'Rr6  
!2s< v  
import org.rut.util.algorithm.SortUtil; Nc:, [8{l  
/-Y*V*E  
/** X[\b!<C  
* @author treeroot jbcJ\2  
* @since 2006-2-2 -h%;L5oJ2,  
* @version 1.0 55 )!cw4  
*/ <*E{z r&  
public class BubbleSort implements SortUtil.Sort{ a1R2ocC  
\Q7Nz2X  
/* (non-Javadoc) R ,-y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p:U9#(v)  
*/ =PWh,lWS  
public void sort(int[] data) { Z;M]^?  
int temp; :j)H;@[I  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S^? @vj  
if(data[j] SortUtil.swap(data,j,j-1); jFf2( AR  
} ( >zXapb2  
} qMD6LWJ  
} *T' /5,rX2  
} u1s^AW8 y  
kFZw"5hb  
} PXof-W  
12n5{'H2%  
选择排序: J;,6ydf8!  
jU |0!]  
package org.rut.util.algorithm.support; Y4e64`V)  
gO_{(\w*  
import org.rut.util.algorithm.SortUtil; KoZ" yD  
h<U<K O  
/** Q]9H9?}N?  
* @author treeroot fz#e4+oH  
* @since 2006-2-2 hG .>>  
* @version 1.0 c-.t8X,5(~  
*/ pMnkh}Q#  
public class SelectionSort implements SortUtil.Sort { h$.y)v  
KSU?Tg&JR  
/* e0Cr>I5/e  
* (non-Javadoc) 9AK<<Mge.  
* iD+Q\l;%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b3N>RPsHS  
*/ NPc]/n?vDj  
public void sort(int[] data) { (dn(:<_$  
int temp; hn\<'|n  
for (int i = 0; i < data.length; i++) { pv*u[ffi  
int lowIndex = i; =$;i  
for (int j = data.length - 1; j > i; j--) { 6<jh0=$  
if (data[j] < data[lowIndex]) { 4^vEMq8lB  
lowIndex = j; RO?5WJpPj  
} ZnSDq_Uk  
} 3qU#Rg ;7  
SortUtil.swap(data,i,lowIndex); q'~ ?azg:  
} H~UxVQLPp  
} ]4wyuP,up  
>F+Mu-^  
} 8##-fv]  
I) Y ^_&=  
Shell排序: ~&B{"d  
CKwrE]h  
package org.rut.util.algorithm.support; &.D3f"  
IH8^ fyQ`  
import org.rut.util.algorithm.SortUtil; M7!>-P  
%>B?WR\yE  
/** Hf!o6 o  
* @author treeroot Hv2t_QjKT  
* @since 2006-2-2 CnyCEIO-  
* @version 1.0 qD Z?iTHQq  
*/  Ht| No  
public class ShellSort implements SortUtil.Sort{ YSERQo  
# 12  
/* (non-Javadoc) nTxeV%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AB<|iJC  
*/ ?Iy$'am]L  
public void sort(int[] data) { 8?#4<4Ql8  
for(int i=data.length/2;i>2;i/=2){ Kcv7C{-/  
for(int j=0;j insertSort(data,j,i); SRs1t6&y=  
} =c>2d.^l  
} ,5^XjU3c=  
insertSort(data,0,1); ;/?M&rX  
} 2>BWu  
 U, _nEx  
/** 1sx@Nvlb  
* @param data 1M+o7HO.mG  
* @param j epM;u  
* @param i ;BzbWvBo  
*/ oe,I vnt  
private void insertSort(int[] data, int start, int inc) { N"Y)  
int temp; zvv<w@rX  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j f25Ky~  
} ]G.ttfC  
} SXkUtY$  
} 1vKc>+9  
DZo7T!  
} 0gdFXh$!e  
>PdYQDyVS  
快速排序: 8OE=7PK  
tSX<^VER7  
package org.rut.util.algorithm.support; QCB2&lN\&L  
\; ! oG  
import org.rut.util.algorithm.SortUtil; |"h# Q[3  
c"`o V! m  
/** x<^+nTzN  
* @author treeroot Y+5nn  
* @since 2006-2-2 W>3[+wB  
* @version 1.0 e~C5{XEE  
*/ I^erMQn[ z  
public class QuickSort implements SortUtil.Sort{ _~V7m  
d 7vD  
/* (non-Javadoc) faQ}J%a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qgREkb0  
*/ Ibt~e4f  
public void sort(int[] data) { &KinCh7l L  
quickSort(data,0,data.length-1);  PI_MSiYQ  
} zUX%$N+w}>  
private void quickSort(int[] data,int i,int j){ sq `f?tA?  
int pivotIndex=(i+j)/2; KwGk8$ U  
file://swap gB/4ro8  
SortUtil.swap(data,pivotIndex,j); f P'qUN  
Y_m/? [:  
int k=partition(data,i-1,j,data[j]); I&JVY8'  
SortUtil.swap(data,k,j); >iD&n4TK  
if((k-i)>1) quickSort(data,i,k-1); egQB!%D  
if((j-k)>1) quickSort(data,k+1,j); W4n;U-Hb  
{A2EGUmF2  
} Bk,:a,  
/** Co[fq3iX#  
* @param data "f^s*I  
* @param i /d;C)%$  
* @param j Gx Z'"x  
* @return J2A+x\{<  
*/ k#mQLv  
private int partition(int[] data, int l, int r,int pivot) { :|cC7, S  
do{ X(s HFVU+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Hy4c{Ij  
SortUtil.swap(data,l,r); g/Q"%GN,  
} 5(BB`)  
while(l SortUtil.swap(data,l,r); _,*ld#'s  
return l; W/03L, 1  
} k?r -%oJ7  
nx{_^sK  
} _$s ;QI]x  
i-1lppI  
改进后的快速排序:  mZGAl1`8  
.m--# r  
package org.rut.util.algorithm.support; ! 6y<jJ>  
0 *!CJ;%N  
import org.rut.util.algorithm.SortUtil; ]2O52r  
\XDc{c]  
/** Axb,{X[6g  
* @author treeroot ['9awgkr/  
* @since 2006-2-2 Py^ _::  
* @version 1.0 U*Q1(C  
*/ Dn{ hU $*  
public class ImprovedQuickSort implements SortUtil.Sort { )qXl8HI  
.Up\ 0|b  
private static int MAX_STACK_SIZE=4096; ^{z@=o<o  
private static int THRESHOLD=10; VI83 3  
/* (non-Javadoc) PL+r*M%ll  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mOiA}BGw  
*/ Rb!|2h)  
public void sort(int[] data) { 5:3%RTLG  
int[] stack=new int[MAX_STACK_SIZE]; Wh PwD6l>  
_H[LUl9  
int top=-1; sEBZ-qql  
int pivot; Hn~=O8/2  
int pivotIndex,l,r; uu08q<B5b)  
TL^af-  
stack[++top]=0; nR%ASUx:Y  
stack[++top]=data.length-1; Q[g>ee  
S b0p?  
while(top>0){ Po+I!TL'  
int j=stack[top--]; #<_gY  
int i=stack[top--]; sK1YmB :~a  
5Q_ T=TL  
pivotIndex=(i+j)/2; QGv$~A[h  
pivot=data[pivotIndex]; h7],/? s  
.KzGb4U  
SortUtil.swap(data,pivotIndex,j); Af *e:}}  
=E{e|(1+u  
file://partition 6yDc4AX  
l=i-1; 05$;7xnf(  
r=j; ^]nnvvp  
do{ sZ~q|}D-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); LW+a-i  
SortUtil.swap(data,l,r); RM^3Snd=V  
} $U3|.4  
while(l SortUtil.swap(data,l,r); E0F8FR'  
SortUtil.swap(data,l,j); Xr?(w(3  
2oY.MQD7iW  
if((l-i)>THRESHOLD){ U[l7n3Y=  
stack[++top]=i; PwF 1Pr`r  
stack[++top]=l-1; >F@qFP N]  
} 4 h}03 oG  
if((j-l)>THRESHOLD){ W6N3u7mrb  
stack[++top]=l+1; \BIa:}9O  
stack[++top]=j; +w'"N  
} x#wkODLqi  
m8Wv46%  
} ~|W0+&):  
file://new InsertSort().sort(data); , 7` /D  
insertSort(data); !Q-h#']~L  
} OR{<)L  
/** :0G_n\  
* @param data u\L=nCtLby  
*/ 4!%@{H`3  
private void insertSort(int[] data) { yr4j  
int temp; jO` b&]0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5m.{ayE  
} pN\YAc*@:  
} hLs<g!*O  
} x2q6y  
9\yGv  
} "c0I2wq  
Uavr>-  
归并排序: yH\3*#+  
'VgdQp$L$  
package org.rut.util.algorithm.support; M @|n"(P  
rV yw1D  
import org.rut.util.algorithm.SortUtil; uL\b*rI  
jkTh)Bm|'  
/** Se0!-NUK0  
* @author treeroot 2 kP0//  
* @since 2006-2-2 y. xt7 F1  
* @version 1.0 }6Ut7J]a|  
*/ 1z .  
public class MergeSort implements SortUtil.Sort{ AXnuXa(j  
h8nJt>h  
/* (non-Javadoc) *w H.]$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I:~KF/q  
*/ /G{;?R  
public void sort(int[] data) { vb o| q[z  
int[] temp=new int[data.length]; 3YKJN4  
mergeSort(data,temp,0,data.length-1); xj6@85^  
} >GbCRN~  
[uJfmrEH  
private void mergeSort(int[] data,int[] temp,int l,int r){ 6MewQ{hi  
int mid=(l+r)/2; fGeDygV^`  
if(l==r) return ; :i{Svb*_'  
mergeSort(data,temp,l,mid); >i6sJ)2?>  
mergeSort(data,temp,mid+1,r); l**gM  
for(int i=l;i<=r;i++){ ?L%BD7  
temp=data; L|?$F*bs  
} :\!D 6\o6  
int i1=l; Yk;-]qi7  
int i2=mid+1; jOkc'  
for(int cur=l;cur<=r;cur++){ ,A$#gLyk<  
if(i1==mid+1) J?oI%r7^  
data[cur]=temp[i2++]; w5C$39e\G  
else if(i2>r) m;_gNh8Ee  
data[cur]=temp[i1++]; >)Udb//  
else if(temp[i1] data[cur]=temp[i1++]; 6KvoHo  
else wjq;9%eXk  
data[cur]=temp[i2++]; Fjs:rZ#{  
} KF4D)NM|  
} ax.;IU  
%>z4hH,  
} %9 q]  
F K7cDaI  
改进后的归并排序: v>XAzA  
4# L}&  
package org.rut.util.algorithm.support; yt5 Sy  
s6DmZ^Y%  
import org.rut.util.algorithm.SortUtil; Rudj"OGO  
xJ$/#UdP  
/** ; ,vGw <|o  
* @author treeroot ;u(#-C2^{l  
* @since 2006-2-2 .83{NF  
* @version 1.0 Cr7T=&L  
*/ 6YHQ/#'G~  
public class ImprovedMergeSort implements SortUtil.Sort { 5 O't-'  
<UEta>jj  
private static final int THRESHOLD = 10; Daw;6f:  
@QN(ouqQ  
/* A_y]6~Mu?~  
* (non-Javadoc) Nf]h8d~  
* [$Dzf<0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /e:kBjysJ  
*/ |]Eli%mNe  
public void sort(int[] data) { F3?PlH:Y  
int[] temp=new int[data.length];  kS7`g A  
mergeSort(data,temp,0,data.length-1); QX`T-)T e  
} nxjP4d>  
9hTzi+'S  
private void mergeSort(int[] data, int[] temp, int l, int r) { f?qp*  
int i, j, k; {^T_m)|n  
int mid = (l + r) / 2; j;MQ_?"iN  
if (l == r) L0Ycf|[s,  
return; +W%3VV$  
if ((mid - l) >= THRESHOLD) % tE#%;Z  
mergeSort(data, temp, l, mid); 4:I'zR5  
else ^pysoaZCT_  
insertSort(data, l, mid - l + 1); svaclkT=  
if ((r - mid) > THRESHOLD) *y0=sG1+D  
mergeSort(data, temp, mid + 1, r); m]?C @ina  
else .eHOG]H  
insertSort(data, mid + 1, r - mid); :~{Nf-y0`1  
Hrg~<-.La  
for (i = l; i <= mid; i++) { ;:]#Isq  
temp = data; 3J_B uMV  
} (-[73v-w  
for (j = 1; j <= r - mid; j++) { 4Zn"K}q  
temp[r - j + 1] = data[j + mid]; tkX?iqKQ  
} obz|*1M?  
int a = temp[l]; ubQbEv{(,  
int b = temp[r]; WAUgbImc{  
for (i = l, j = r, k = l; k <= r; k++) { Xl %ax!/  
if (a < b) { ?'IY0^  
data[k] = temp[i++]; c-y`Hm2"  
a = temp; '@{Mq%`  
} else { k d9<&.y{  
data[k] = temp[j--]; fZtuP1- 4  
b = temp[j]; k0v&U@+-J  
} fe4Ki  
} h]jy):9L  
} a;h.I}*]  
V#,jUH|  
/** wj{[g^y%  
* @param data >+FaPym  
* @param l vveL|j  
* @param i .Cz9?]jyI  
*/ _+6aD|7x  
private void insertSort(int[] data, int start, int len) { ~QngCg-5q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Fl}{"eCF8  
} <}Hs@`jS  
} n)uck5  
} i}gsxq%  
} KK';ho,W  
O63:t$Yx#  
堆排序: UbEK2&q/8  
}pJLK\  
package org.rut.util.algorithm.support; asZ(Hz%  
EXEB A&*  
import org.rut.util.algorithm.SortUtil; \(&UDG$  
GWa:C\YK  
/** ?0x=ascP  
* @author treeroot -d4|EtN  
* @since 2006-2-2 H7{I[>:  
* @version 1.0 $]<wQH/?_  
*/ ]99@Lf[^f  
public class HeapSort implements SortUtil.Sort{ EdTR]}8  
B2^*Sr[  
/* (non-Javadoc) ^oMdx2Ow#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T9\G,;VQ7/  
*/ DS|q(O=7~t  
public void sort(int[] data) { [T(`+ #f  
MaxHeap h=new MaxHeap(); O8k+R@  
h.init(data); FaLc*CU  
for(int i=0;i h.remove(); s4[PwD  
System.arraycopy(h.queue,1,data,0,data.length); <lgX=wx L  
} vLs*}+f  
c->.eL%   
private static class MaxHeap{ (b8ZADI*  
rHp2I6.0a  
void init(int[] data){ ECk* H  
this.queue=new int[data.length+1]; [.'9Sw  
for(int i=0;i queue[++size]=data; \A 5Na-/9  
fixUp(size); o/hj~;(]  
} VZ$^:.I0  
} |c[= V?AC  
ctMH5"F&1  
private int size=0; -BC`p 8  
N}ZBtkR  
private int[] queue; \YPv pUg  
_P9*78  
public int get() { <!q_C5>XJ  
return queue[1]; oV'G67W  
} I+/fX0-Lib  
:E.T2na  
public void remove() { fb8)jd'~}O  
SortUtil.swap(queue,1,size--); !;Vqs/E  
fixDown(1); X?.tj Z,  
} w/e?K4   
file://fixdown >o1,Y&  
private void fixDown(int k) { uvl>Z= "  
int j; 2j&0U!DX  
while ((j = k << 1) <= size) { M.67[Qj~"u  
if (j < size %26amp;%26amp; queue[j] j++; $DW__h  
if (queue[k]>queue[j]) file://不用交换 no(or5UJ  
break; @~bP|a  
SortUtil.swap(queue,j,k); LT#EYnG  
k = j; 3<>DDY2bl  
} "j8`)XXa(  
} 0"{-<Wot}  
private void fixUp(int k) { Z~] G+(  
while (k > 1) { )|6OPR@(#/  
int j = k >> 1; _%u t#  
if (queue[j]>queue[k]) gh `]OxA  
break; \ #N))gAQ  
SortUtil.swap(queue,j,k); ^p~QHS/  
k = j; i`5Skr:M  
} &Qmb?{S0  
} tYp 185  
u\(>a  
} ]Pe8G(E!  
)jjL'  
} yN/g;bQ  
1&RB=7.h  
SortUtil:  Vqr]Ui  
ar _@"+tZ  
package org.rut.util.algorithm; jLn|zK  
!JtM`x/yR  
import org.rut.util.algorithm.support.BubbleSort; YjiMUi\V  
import org.rut.util.algorithm.support.HeapSort; _ glB<r$  
import org.rut.util.algorithm.support.ImprovedMergeSort;  =>XjChM  
import org.rut.util.algorithm.support.ImprovedQuickSort; yO` |X  
import org.rut.util.algorithm.support.InsertSort; >T)tAZ?WK  
import org.rut.util.algorithm.support.MergeSort; s Fx0  
import org.rut.util.algorithm.support.QuickSort; 9)>+r6t  
import org.rut.util.algorithm.support.SelectionSort; ECk3Da  
import org.rut.util.algorithm.support.ShellSort; ]xGpN ]u  
 niyI$OC  
/** "m`}J*s"  
* @author treeroot /VD[:sU7  
* @since 2006-2-2 UrO& K]Z  
* @version 1.0 S`Z[MNY  
*/ NA$%Up  
public class SortUtil { ipE|)Ns  
public final static int INSERT = 1; [?bq4u`  
public final static int BUBBLE = 2; U6.hH%\}@  
public final static int SELECTION = 3; v'm-A d+4t  
public final static int SHELL = 4; yxi&80$  
public final static int QUICK = 5; _WZ{i,  
public final static int IMPROVED_QUICK = 6; sR^b_/ElxT  
public final static int MERGE = 7; Z3U%Afl2{  
public final static int IMPROVED_MERGE = 8; 3WpQzuHPT  
public final static int HEAP = 9; 5uV_Pkb?8  
w '9!%mr  
public static void sort(int[] data) { RL[F 9g  
sort(data, IMPROVED_QUICK); xo4lM  
} v\E6N2.S  
private static String[] name={ <zm:J4&>T  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jX0^1d@  
}; <fE ^S  
R@#xPv4o%  
private static Sort[] impl=new Sort[]{ eVd:C8q  
new InsertSort(), WcY$=\7  
new BubbleSort(), P)Rq\1:  
new SelectionSort(), HL-'\wtl  
new ShellSort(), NLu[<u U*  
new QuickSort(), JXHf$k  
new ImprovedQuickSort(), P/xE n_*v  
new MergeSort(),  uAs!5h  
new ImprovedMergeSort(), (b.4&P"0  
new HeapSort() UC j:]!P  
}; _GM?`  
ui-]%~  
public static String toString(int algorithm){ ^CgN>-xZ?#  
return name[algorithm-1]; MS:,I?  
} Dp4x\97O  
Bw~jqDZ}|  
public static void sort(int[] data, int algorithm) { L9oLdWa(C  
impl[algorithm-1].sort(data); 6&QOC9JW+7  
} Lq2jXy5#n  
`q`ah_  
public static interface Sort { zG{jRth  
public void sort(int[] data); i'.D=o  
} XMz*}B6GQ  
{Us^ 4Xe  
public static void swap(int[] data, int i, int j) { B@S~v+Gr  
int temp = data; |bhv7(_  
data = data[j]; *>2e4j]  
data[j] = temp; BHiG3fP  
} ohs`[U=%~  
} B`||4*  
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