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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。 7gD$Q  
插入排序: S:rW}rJ  
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package org.rut.util.algorithm.support; O+.V,` O  
4d0PW#97.  
import org.rut.util.algorithm.SortUtil; wGnjuIR  
/** 3iH!;`i  
* @author treeroot `j4ukOnG  
* @since 2006-2-2 C&<f YCwG  
* @version 1.0 OX|/yw8  
*/ Eto0>YyZ  
public class InsertSort implements SortUtil.Sort{ 4vBZb^W;9  
Z9=Cw0( w?  
/* (non-Javadoc) Lk#u^|Eq7=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xb$)}n\9  
*/ ~+3f8%   
public void sort(int[] data) { ':o.vQdJ  
int temp; KMoRMCT  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tEiN(KA!5  
} Q(V c/  
} ]jY->NsA]  
} _i}6zxqw  
]#S1 AvT  
} ,@Ed)Zoh  
)_xM)mH  
冒泡排序: QhpE2ICU  
' 'UiQ   
package org.rut.util.algorithm.support; VD36ce9  
xiA9X]FB  
import org.rut.util.algorithm.SortUtil; ?>RJ8\Sj  
Xg,E;LSF8  
/** tJHzhH)  
* @author treeroot $`l- cSH;  
* @since 2006-2-2 wQM(Lm#Q  
* @version 1.0 pN*>A^  
*/ Q*mPU=<  
public class BubbleSort implements SortUtil.Sort{ Q CfA3*  
[|k@Suv |z  
/* (non-Javadoc) !^l<jrM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *e_ /D$SC  
*/ ?1OS%RBF  
public void sort(int[] data) { (O&ooM* o  
int temp; 4!/{CGP  
for(int i=0;i for(int j=data.length-1;j>i;j--){ *<Qn)Az  
if(data[j] SortUtil.swap(data,j,j-1); \P{VJ^) 0  
} WNd(X}  
} X*%KR4`  
} $qIMYX  
} ]d% hU  
$stJ+uh  
} +sgishqn9  
\i`/k(  
选择排序: x8zUGvtQ  
8#7z5:_  
package org.rut.util.algorithm.support; \n:'>:0X!  
B[cZEFo\  
import org.rut.util.algorithm.SortUtil; 2,NQ(c_c$  
(hd2&mSy  
/** +uv]dD *i  
* @author treeroot 3( AgUq  
* @since 2006-2-2 \ J9@p  
* @version 1.0 (kb^=kw#0  
*/ 'y;[ fwo7  
public class SelectionSort implements SortUtil.Sort { 5&+ qX 2b  
#XC\= pZX  
/* @uT\.W:Q2  
* (non-Javadoc) Ds0^/bYp&  
* 7CM<"pV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OU0\xx1/  
*/ =AZ>2P  
public void sort(int[] data) { ?L{[84GSO  
int temp; ^U:pv0Qz  
for (int i = 0; i < data.length; i++) { {!'AR`|  
int lowIndex = i; 7c4\'dt#  
for (int j = data.length - 1; j > i; j--) { 8BLtTpu  
if (data[j] < data[lowIndex]) { obaJT"1  
lowIndex = j; \f@PEiARG7  
} pS*vwYA  
} b/5;377_  
SortUtil.swap(data,i,lowIndex); ]#R;%L  
} hD # Yz<  
} 0I~xD9l9  
>9Ub=tZm  
} )}n`MRDB  
~i6tc d  
Shell排序: _YO` x  
@ZD1HA,h"  
package org.rut.util.algorithm.support; *vUKh^="  
0(:"q!h  
import org.rut.util.algorithm.SortUtil; />K$_T/]  
&[qL l  
/** xJN JvA  
* @author treeroot ]W-:-.prh  
* @since 2006-2-2 Zp l?zI  
* @version 1.0 N;<<-`i  
*/ T4o}5sq}S  
public class ShellSort implements SortUtil.Sort{ eP[azC"G[  
rK}*Uwut  
/* (non-Javadoc) q.uIZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q;t T*B W  
*/ \W}?4kz  
public void sort(int[] data) { !=|3^A  
for(int i=data.length/2;i>2;i/=2){ 8$xg\l0?KK  
for(int j=0;j insertSort(data,j,i); Hz%#&E  
} 6-QTqb?U;N  
} 1th|n  
insertSort(data,0,1); >Y)jt*vQ  
} cz&Qoyh{;  
mi%d([)%<  
/** YNHn# 98\  
* @param data &Q(Q/]U~  
* @param j s26:(J [{  
* @param i 9IC"p<D  
*/ Hc5@ gN  
private void insertSort(int[] data, int start, int inc) { h^?[:XBeav  
int temp; u{tjB/K&  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .2[>SI  
} `!>zYcmT  
} :=UeYm @  
} Lt|k}p@]  
K, ?M5n '  
} I_'vVbK+>  
%L<VnY#%u  
快速排序: Wi hQj  
qRTxg%  
package org.rut.util.algorithm.support; )MmMs"Um  
^xu`NE8;  
import org.rut.util.algorithm.SortUtil; W&TPrB  
rsOon2|  
/** i2)rDek3]T  
* @author treeroot c*HS#C7'2  
* @since 2006-2-2 s)]i0+!  
* @version 1.0 Y-gjX$qGo  
*/ y3c]zDjV  
public class QuickSort implements SortUtil.Sort{ .oN<c]iqE  
.kBi" p&  
/* (non-Javadoc) hTf]t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @,pO%,E6  
*/ l4|bpR Cp  
public void sort(int[] data) { Uj1^?d+b  
quickSort(data,0,data.length-1); dB^J}_wp  
} W^60BZ  
private void quickSort(int[] data,int i,int j){ n"(n*Hf7b  
int pivotIndex=(i+j)/2; k "'q   
file://swap dxUq5`#G,  
SortUtil.swap(data,pivotIndex,j); zp,f}  
cQ1oy-paD  
int k=partition(data,i-1,j,data[j]); DIkD6n?V  
SortUtil.swap(data,k,j); :sk7`7v  
if((k-i)>1) quickSort(data,i,k-1); %:YON,1b=7  
if((j-k)>1) quickSort(data,k+1,j); p_!Y:\a5  
z,I7 PY& G  
} 3)EslBA7i  
/** ~}$:iyJV(>  
* @param data `i,ZwnLh{  
* @param i < 5;0LPU  
* @param j UN_lK<utF  
* @return #:DDx5%x<b  
*/ .G?7t6A  
private int partition(int[] data, int l, int r,int pivot) { fn&gM\<-+(  
do{ 1;080| ,s  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); UI_|VU>J  
SortUtil.swap(data,l,r); %pt ul_(s'  
} ubj ~ULA  
while(l SortUtil.swap(data,l,r); `m`jX|`  
return l; *x)WF;(]g  
} C W7E2 ^P$  
WK:~2m&y  
} 3@XCP-`  
=}Bq"m  
改进后的快速排序: 7.hVbjy'-  
L7wl3zG  
package org.rut.util.algorithm.support; #HJF==  
$_@~t$  
import org.rut.util.algorithm.SortUtil; aVO5zR./)  
]J~37 35]  
/** xAjLn*d|N  
* @author treeroot vObP(@0AM  
* @since 2006-2-2 j<R,}nmD3\  
* @version 1.0 va95/(  
*/ x,5$VLs\+  
public class ImprovedQuickSort implements SortUtil.Sort { &&M-5XD  
c zL[W2l   
private static int MAX_STACK_SIZE=4096; jf$6{zO6j  
private static int THRESHOLD=10; X>wB=z5PXK  
/* (non-Javadoc) zi:GvTG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \G#Qe*"'K  
*/ nyw,Fu  
public void sort(int[] data) { Zo-E0[9  
int[] stack=new int[MAX_STACK_SIZE]; ^.nvX{H8~=  
^ Gq2"rDM  
int top=-1; jt S+y)2  
int pivot; i"F'n0*L  
int pivotIndex,l,r; +r2E5s   
;=5V)1~i1;  
stack[++top]=0; NQ'^ z  
stack[++top]=data.length-1;  ^G~W}z?-  
% 95:yyH 0  
while(top>0){ ]6pxd \Q  
int j=stack[top--]; =yz#L@\!  
int i=stack[top--]; !jU<(eY  
(W5E\hjJ  
pivotIndex=(i+j)/2; 5#80`/w^U  
pivot=data[pivotIndex]; Q7N4@w;e  
gK-:t  
SortUtil.swap(data,pivotIndex,j); Gyjx:EM  
5l=B,%s  
file://partition pyT+ba#  
l=i-1; "SNsOf  
r=j; p<Ah50!B  
do{ p27A#Uu2}  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C$"jZcm,I  
SortUtil.swap(data,l,r); v|?hc'Fj  
} Ke&lGf"5  
while(l SortUtil.swap(data,l,r); mB"zyL-  
SortUtil.swap(data,l,j); @1*lmFq'kV  
,b-wo  
if((l-i)>THRESHOLD){ 2GqPS  
stack[++top]=i; 28f-8B  
stack[++top]=l-1; ::j'+_9  
} bsuUl*l)  
if((j-l)>THRESHOLD){ b v\V>s  
stack[++top]=l+1; xGk@BA=0<  
stack[++top]=j; 95T%n{rz  
} pnxjuDN7}x  
U`W^w%  
} p0qQ(  
file://new InsertSort().sort(data); L}XERO TR  
insertSort(data); "<v_fF<Y  
} w_KGn17  
/** _a+0LTo".  
* @param data q)G*"  
*/ ?Ih24>:D  
private void insertSort(int[] data) { _xl#1>G^J  
int temp; [l- zU}u&v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,^26.p$  
} 6lT1X)  
} yx{Ac|<mR  
} ]1)@.b;QR  
hO;bnt%(  
} D4 {gt\V  
#7lkj:j4  
归并排序: }ebw1G  
rHT8a^MO  
package org.rut.util.algorithm.support; M0=ZAsN  
&I'~:nWpt  
import org.rut.util.algorithm.SortUtil; g#9w5Q  
pqMv YF  
/** nI2}E  
* @author treeroot ^nbze  
* @since 2006-2-2 s.=)p"pTd  
* @version 1.0 iUS379wM}  
*/ v 0rX/ mj  
public class MergeSort implements SortUtil.Sort{ $rFv(Qc^=  
9'8OGCN  
/* (non-Javadoc) 0a8nBo7A-X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u+I-!3J87  
*/ {@Diig  
public void sort(int[] data) { :]y;t/   
int[] temp=new int[data.length]; ,=$yvZs4[]  
mergeSort(data,temp,0,data.length-1); _\@i&3hkx  
} &U4]hawbOU  
<Cg;l<$`b  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]DmqhK`  
int mid=(l+r)/2; Qbl6~>T  
if(l==r) return ; + {a  
mergeSort(data,temp,l,mid); 45kMIh~~X  
mergeSort(data,temp,mid+1,r); =!#D UfQf  
for(int i=l;i<=r;i++){ aI8wy-3I  
temp=data; ,yV pB)IQ  
} oYJ&BPuA'  
int i1=l; EF"ar  
int i2=mid+1; T?AGQcG  
for(int cur=l;cur<=r;cur++){ Y1`.  
if(i1==mid+1) s$H5W`3  
data[cur]=temp[i2++]; ;lYO)Z`3\  
else if(i2>r) }s}9@kl;&  
data[cur]=temp[i1++]; &CUkR6  
else if(temp[i1] data[cur]=temp[i1++]; >x2T '  
else 8^dGI9N  
data[cur]=temp[i2++]; L'aMXNO  
} $ZcmE<7k  
} ^jf$V #z0/  
}-r"W7]k  
} D|e6$O5o  
6b<t|zb  
改进后的归并排序: AQQj]7Y  
&cpRB&bf  
package org.rut.util.algorithm.support; sv0kksj  
`Z%XA>  
import org.rut.util.algorithm.SortUtil; cLR8U1k'  
Ae ue:u>  
/** M\`6H8aLn  
* @author treeroot #:s'&.6  
* @since 2006-2-2 &RROra  
* @version 1.0 TUpEh Q+*  
*/ D"^ogY#LK  
public class ImprovedMergeSort implements SortUtil.Sort { @C z1rKU^l  
/23v]HEPy  
private static final int THRESHOLD = 10; ,pLesbI  
SCGQo.~,  
/* jDXmre?  
* (non-Javadoc) _ORW'(:Z  
* ^+GN8LUs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?7G[`@^Y  
*/ t:M>&r:BL  
public void sort(int[] data) { b]|7{yMV  
int[] temp=new int[data.length];  K[?wP>s  
mergeSort(data,temp,0,data.length-1); FfD2 &(-R  
} 29av8eW?3  
8De `.!Gg  
private void mergeSort(int[] data, int[] temp, int l, int r) { jWU)y)$  
int i, j, k; ?nt6vqaV  
int mid = (l + r) / 2; $mlsFBd  
if (l == r) ^eZqsd8a  
return; jBE= Ij  
if ((mid - l) >= THRESHOLD) DcOu =Y> 1  
mergeSort(data, temp, l, mid); P `2Rte6s  
else IloHU6h'  
insertSort(data, l, mid - l + 1); ;nh7Elk  
if ((r - mid) > THRESHOLD) |#-Oz#Eg'  
mergeSort(data, temp, mid + 1, r); UI!EIZ*~  
else G53!wIW2:  
insertSort(data, mid + 1, r - mid); NEGpf[$  
4tu2%Og)?  
for (i = l; i <= mid; i++) { ait/|a  
temp = data; l;|1C[V  
} w^ DAu1  
for (j = 1; j <= r - mid; j++) { ")sq?1?X  
temp[r - j + 1] = data[j + mid]; DD~8:\QD  
} i, )kI  
int a = temp[l]; w\@Anwj#L  
int b = temp[r]; ^3r2Q?d\  
for (i = l, j = r, k = l; k <= r; k++) { z ,ledTl  
if (a < b) { a(J~:wgd  
data[k] = temp[i++]; oa9T3gQ?  
a = temp; \7/xb{z|  
} else { DAvAozM  
data[k] = temp[j--]; 9k *'5(D4S  
b = temp[j]; PMTyiwlm  
} UhEnW8^bz1  
} wEkW=  
} 3b[_0  
(JF\%Yj/  
/** 7vHU49DV  
* @param data =j}00,WH  
* @param l Ur@'X-  
* @param i FD`V39##  
*/ IzL yn  
private void insertSort(int[] data, int start, int len) { TnKe"TA|9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Zd5fr c$  
} |H |ewVUY  
} Zd~Z`B} &  
} 9xWeVlfQ  
} n=yFw\w'  
s\ ~r 8  
堆排序: YHAy+S  
`GSfA0?  
package org.rut.util.algorithm.support; \y0abxIHS  
U,+=>ns>  
import org.rut.util.algorithm.SortUtil; CF$^we  
y\@XW*_?  
/** 0<P -`|X  
* @author treeroot R"82=">v  
* @since 2006-2-2 RQh4RUm  
* @version 1.0 icnp^2P  
*/ A46y?"]/30  
public class HeapSort implements SortUtil.Sort{ k|g~xmI;  
IPY@9+]  
/* (non-Javadoc) M<)HJ lr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H>W A?4  
*/ p oNQ<ijK  
public void sort(int[] data) { zx\?cF  
MaxHeap h=new MaxHeap(); YxsW Y7J  
h.init(data); g@S"!9[;U  
for(int i=0;i h.remove(); G_X'd  
System.arraycopy(h.queue,1,data,0,data.length); ci*Z9&eS+  
} X"[c[YT!%[  
Y=Bk;%yT=  
private static class MaxHeap{ ~A6QX8a  
tt`b+NOH>  
void init(int[] data){ jLZ~9FXF2  
this.queue=new int[data.length+1]; \a}%/_M\  
for(int i=0;i queue[++size]=data; ffSecoX  
fixUp(size); rt."P20T  
} Z!ub`coV[  
} 0h#' 3z<  
Gh@QR`xxc  
private int size=0; c"fnTJXr79  
M#2DI?S@  
private int[] queue; _STN^   
P/0n) Q  
public int get() { j4Lf6aUOX  
return queue[1]; y=q\1~]Z  
} )TV'eq  
QDyL0l{C  
public void remove() { nC2A&n&>  
SortUtil.swap(queue,1,size--); :}j{NM#  
fixDown(1); J;G+6C$:  
} F7L+bv   
file://fixdown 4egq Y0A  
private void fixDown(int k) { & XcY|y=W  
int j; 8wwD\1pLS  
while ((j = k << 1) <= size) { + e4o~ p  
if (j < size %26amp;%26amp; queue[j] j++; S^~GI$  
if (queue[k]>queue[j]) file://不用交换 >D*L0snjV  
break; +]Ydf^rF  
SortUtil.swap(queue,j,k); NbfV6$jo  
k = j; H{9di\xnEm  
} ^TnBtIU-B  
} p"Fj6T2  
private void fixUp(int k) { LL.YkYu  
while (k > 1) { }cMb0`oA  
int j = k >> 1; YB~}!F [(  
if (queue[j]>queue[k]) rHh<_5-/>  
break; *y F 9_\n  
SortUtil.swap(queue,j,k); $\{@wL  
k = j; mVW:]|!s  
} %5a>@K]  
} Ean@GDLz8  
vB KBMnSd  
} ZOfyy E  
nIKh<ws4z  
} ,%yjEO  
vA:1z$m  
SortUtil: X8p-VCkV  
De\&r~bTW9  
package org.rut.util.algorithm; Ll%[}C?~]?  
hQPiGIs  
import org.rut.util.algorithm.support.BubbleSort; XkOsnI8n  
import org.rut.util.algorithm.support.HeapSort; d\D.l^  
import org.rut.util.algorithm.support.ImprovedMergeSort; ^q7 fN0"6  
import org.rut.util.algorithm.support.ImprovedQuickSort; \h?C G_|]  
import org.rut.util.algorithm.support.InsertSort; dz&8$(f,  
import org.rut.util.algorithm.support.MergeSort; i5q VQo  
import org.rut.util.algorithm.support.QuickSort; wjQu3 ,Cj  
import org.rut.util.algorithm.support.SelectionSort; hH|3s-o  
import org.rut.util.algorithm.support.ShellSort; $_% a=0  
,;hI yT  
/** 6:#zlKYJ  
* @author treeroot 3<CCC+47  
* @since 2006-2-2 s9@/(_  
* @version 1.0 t|%wVj?_  
*/ f9F@G&&Ugg  
public class SortUtil { [C9->`(`  
public final static int INSERT = 1; ON\_9\kv  
public final static int BUBBLE = 2; Ztr,v$  
public final static int SELECTION = 3; =gw 'MA  
public final static int SHELL = 4; E9YR *P4$  
public final static int QUICK = 5; |fOQm  
public final static int IMPROVED_QUICK = 6; +r"{$'{^  
public final static int MERGE = 7; 6/Q'o5>NL:  
public final static int IMPROVED_MERGE = 8; 6ix8P;;}#  
public final static int HEAP = 9; #jv~FR`4v^  
w?Cqe N  
public static void sort(int[] data) { E~3wdOZv1  
sort(data, IMPROVED_QUICK); VW}xY  
} X@2[!%nm  
private static String[] name={ I_oJx  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Cpz'6F^oP  
}; D({% FQ"  
M6[&od  
private static Sort[] impl=new Sort[]{ &2d^=fih  
new InsertSort(), K}L-$B*i  
new BubbleSort(), bb`GV  
new SelectionSort(), {.K >9#^m  
new ShellSort(), 'C)`j{CS  
new QuickSort(), Xk8+m>   
new ImprovedQuickSort(), esIE i!d  
new MergeSort(), mw-0n  
new ImprovedMergeSort(), ` <cB 6  
new HeapSort() q~48lxDU  
}; q]ER_]%Gna  
K?8{ y  
public static String toString(int algorithm){ rzsb(  
return name[algorithm-1]; [kM)K'-  
} @7e h/|Y,  
? suNA  
public static void sort(int[] data, int algorithm) { g[!t@K  
impl[algorithm-1].sort(data); w$MFCJ:p&  
} NTkGLD1e.  
`lX |yy"  
public static interface Sort { /GD4GWv :  
public void sort(int[] data); yZj:Kp+7  
} =* oFs|v  
zxTcjC)y  
public static void swap(int[] data, int i, int j) {  yl0&|Ub  
int temp = data; B"ZW.jMaI  
data = data[j]; .DiH)  
data[j] = temp; AKk6kI8F  
} ~ODm?k  
} g"Mqh!{ FI  
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