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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。 : *Nvy={c  
插入排序:  T8i9  
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package org.rut.util.algorithm.support; kGZ_/"iuO  
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import org.rut.util.algorithm.SortUtil; *0,?QS-a  
/** B R-(@  
* @author treeroot )2 P4EEs[  
* @since 2006-2-2 6QOdd 6_d  
* @version 1.0 y'<juaw  
*/ zaVDe9B,7  
public class InsertSort implements SortUtil.Sort{ |ei?s1)  
aQEMCWxZ  
/* (non-Javadoc) 6_wf $(im  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @lP<Mq~]  
*/ [[PUK{P0  
public void sort(int[] data) { Eqg(U0k0  
int temp; d&p]O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aO]0|<2 j  
} kxg]sr"  
} a9q68  
} wOy1i/oj  
y^gazr"  
} k]Y#-Q1p~  
ul e]eRAG  
冒泡排序: F%Lniv/N  
4C ;4"6  
package org.rut.util.algorithm.support; _F *(" o  
Yp`6305f  
import org.rut.util.algorithm.SortUtil; w 1E}F  
_= _]Yx  
/** sM?bUg0w  
* @author treeroot 1a)NM#  
* @since 2006-2-2 *a@pZI0'  
* @version 1.0 Mc9P(5Bf  
*/ <)zh2UI  
public class BubbleSort implements SortUtil.Sort{ B(mxW8y  
EO,;^RtB  
/* (non-Javadoc) A`7uw|uO$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6$>m s6g%  
*/ N1KYV&'o  
public void sort(int[] data) { SPIYB/C  
int temp; <=V2~ asB  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2k[i7Rl \c  
if(data[j] SortUtil.swap(data,j,j-1); '!!w|k d  
} *_$%Tv.]  
} buRXzSR  
} I'o9.B8%#  
} X9nt;A2TU+  
<GShm~XD2  
} qoMYiF}/e  
DFs J}` $  
选择排序: uKqN  
J! >HT'M  
package org.rut.util.algorithm.support; )}?'1ciHI  
^6+P&MxM  
import org.rut.util.algorithm.SortUtil; +b] g;  
6:B[8otQ  
/** cW,wN~  
* @author treeroot *&B*/HAN  
* @since 2006-2-2 x!q$`zF\\  
* @version 1.0 ,SJB 3if  
*/ .bvB8VOrW  
public class SelectionSort implements SortUtil.Sort { ^"ywltW>  
~fs{Ff'  
/* f3-=?Z  
* (non-Javadoc) 9c806>]U^  
* '=x   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S,vrz!'>A  
*/ V5K!u8T  
public void sort(int[] data) {  :XF;v  
int temp; 2"nd(+ QH  
for (int i = 0; i < data.length; i++) { SPL72+S`,  
int lowIndex = i; N40.GL0s  
for (int j = data.length - 1; j > i; j--) { 6Pl$DSu  
if (data[j] < data[lowIndex]) { 'M+iVF6  
lowIndex = j; !1dCk/D&)8  
} =4yME  
} lMp)T**  
SortUtil.swap(data,i,lowIndex); -<}_K,Ky`  
} jh`&c{#*)M  
} G3 #c  
FgRlxz  
} YmHn*N}:U  
L1.<LB^4'  
Shell排序: l{aXX[E&1  
;,Sl+)@h  
package org.rut.util.algorithm.support; ?D\6CsNp(2  
VbK| VON[  
import org.rut.util.algorithm.SortUtil; j0o_``  
8;.WX  
/** R3&W.?C T  
* @author treeroot Bfaj4i ;_  
* @since 2006-2-2 zp"sM z]  
* @version 1.0 kwK<?\D  
*/ rO 6oVz#x  
public class ShellSort implements SortUtil.Sort{ ;04doub  
sxl29y^*  
/* (non-Javadoc) `#2}[D   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +|Xx=1_?BK  
*/ %`HAg MgP  
public void sort(int[] data) { }9>W41  
for(int i=data.length/2;i>2;i/=2){ 9pStArF?F0  
for(int j=0;j insertSort(data,j,i); '(kGc%  
} >mT2g  
} >!wX% QHH  
insertSort(data,0,1); &iL"=\#  
} 3yDa5q{  
[1dlV/  
/** W:b8m Xx  
* @param data <;+&`R  
* @param j N4}/n  
* @param i Z|uUE   
*/ >I8R[@  
private void insertSort(int[] data, int start, int inc) { ?^2(|t9KU  
int temp; n'1pNL:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 28LjQ!  
} @1gX>!  
} : UD<1fh  
} me$ 7\B;wy  
:^1 Xfc"  
} jUZ84Gm{  
 _*9eAeJ  
快速排序: ]gHw;ry  
Bh"o{-$p8`  
package org.rut.util.algorithm.support; 3uz@JY"mK  
$=TFTSO  
import org.rut.util.algorithm.SortUtil; 3rTYe6q$U  
-2w\8]u  
/** 4rc4}Yu,JI  
* @author treeroot Obrv5 %'  
* @since 2006-2-2 Q~#udEajI  
* @version 1.0 5pI2G  
*/ `3SY~&X  
public class QuickSort implements SortUtil.Sort{ W7S`+Pq  
BE:HO^-.1  
/* (non-Javadoc) ; GRSe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #)tt}GX  
*/ 7*M+bZ`x  
public void sort(int[] data) { pz6fL=Xd  
quickSort(data,0,data.length-1); My76]\Psh  
} n87B[R  
private void quickSort(int[] data,int i,int j){ {2}O\A  
int pivotIndex=(i+j)/2; 7pMrYIP  
file://swap M8ZpNa  
SortUtil.swap(data,pivotIndex,j); \e T0d<  
U{} bx  
int k=partition(data,i-1,j,data[j]); 9h<];  
SortUtil.swap(data,k,j); /^G1wz2  
if((k-i)>1) quickSort(data,i,k-1); 6OF&Q`*4  
if((j-k)>1) quickSort(data,k+1,j); ib0M$Y1tIS  
`!kOyh:X  
} CQW#o_\  
/** {l%Of  
* @param data |gA~E>IqF  
* @param i c-z ,}`  
* @param j 81O`#DfZ  
* @return 7;) T;X  
*/ 'mp@!@_  
private int partition(int[] data, int l, int r,int pivot) { 8Sd<!  
do{ 6FiI\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !0CC&8C`  
SortUtil.swap(data,l,r); HbX>::J8  
} `6)GjZh^  
while(l SortUtil.swap(data,l,r); 0+}42g|_Z  
return l; 93$'PwWgiF  
} 1\=)b< y  
C,P>7  
} BRPvBs?Q,{  
s% 2w&Us*  
改进后的快速排序: IKMkpX!]  
y$Sn3_9 V  
package org.rut.util.algorithm.support; 3~ ;LNi  
-uIu-a]  
import org.rut.util.algorithm.SortUtil; NBwxN  
 SS[jk  
/** zp:kdN7!^  
* @author treeroot X9K@mX  
* @since 2006-2-2 T ]hVO'z  
* @version 1.0 0D+[W5TB  
*/ F"1)y>2k  
public class ImprovedQuickSort implements SortUtil.Sort { 7+0Kg'^+n  
c3W9"  
private static int MAX_STACK_SIZE=4096; y4PR&^l?g  
private static int THRESHOLD=10; Z,^`R] 9  
/* (non-Javadoc) OS;qb:;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pwtB{6)VH{  
*/ !}<d6&!py  
public void sort(int[] data) { S}f 3b N  
int[] stack=new int[MAX_STACK_SIZE]; T!0o(Pp<  
rkugV&BhV  
int top=-1; )y4bb^;z  
int pivot; 9E5Ec~l  
int pivotIndex,l,r; 3gV 17a  
wmAZ {  
stack[++top]=0;  $A]2Iw!&  
stack[++top]=data.length-1; 4{=zO(>  
l\xcR]O  
while(top>0){ hO w  
int j=stack[top--]; ;gLHSHEA  
int i=stack[top--]; ecDni>W  
IL;JdIa  
pivotIndex=(i+j)/2; kU{+@MA;  
pivot=data[pivotIndex]; j*+[=X/  
Tw *:Vw  
SortUtil.swap(data,pivotIndex,j); I(tMw6C$:  
VW:WB.K$  
file://partition Q>Voa&tYn  
l=i-1; z SDRZ!  
r=j; v._Q XcE  
do{ \  {` `r  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G_vWwH4XtL  
SortUtil.swap(data,l,r); >-J%=P  
} _;L%? -2c  
while(l SortUtil.swap(data,l,r); }Q&zYC]d  
SortUtil.swap(data,l,j); z*n  
GOrDDp  
if((l-i)>THRESHOLD){ tj$&89  
stack[++top]=i; tIn dve  
stack[++top]=l-1; B( r~Nvc  
} $c"byQ[3S  
if((j-l)>THRESHOLD){ 9'nM$ a  
stack[++top]=l+1; N3dS%F,_  
stack[++top]=j; 2[!#Xf  
} hEUS&`K  
Z>hS&B  
} :/UO3 c(  
file://new InsertSort().sort(data); ko<u0SjF)u  
insertSort(data); }MQNzaXY^  
} B=14 hY@`  
/** T'_#Dwmj*  
* @param data =h5&:?X  
*/ g~E N3~  
private void insertSort(int[] data) { Q+@/.qJ  
int temp; [A~n=m5H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zntvKOIh  
} m}Xb#NAF8  
} Q^13KWvuV  
} *Z}^T:3iw}  
i!0w? /g9  
} RN:VsopL  
"/H B#  
归并排序: 7Z%EXDm4/c  
}_Y&kaM  
package org.rut.util.algorithm.support; m8M2ka  
= VIU  
import org.rut.util.algorithm.SortUtil; stGk*\>U'  
%!DdjC&5*  
/** Ac^hZ.qPz  
* @author treeroot N;Hoi8W  
* @since 2006-2-2 7`eg;s^  
* @version 1.0 (<GBhNj=c  
*/ S $j"'K  
public class MergeSort implements SortUtil.Sort{ HGycF|]2  
?{=& Ro  
/* (non-Javadoc) p>M8:,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m\*;Fx  
*/ f2h`bO  
public void sort(int[] data) { +vf~s^  
int[] temp=new int[data.length]; ;OC~,?O5  
mergeSort(data,temp,0,data.length-1); oZ]^zzoEcg  
} Z4ekBdmCL  
(F=/r] Q  
private void mergeSort(int[] data,int[] temp,int l,int r){ A-"2sp*t  
int mid=(l+r)/2; iA.:{^_)09  
if(l==r) return ; YQ? "~[mL  
mergeSort(data,temp,l,mid); ycD.X"  
mergeSort(data,temp,mid+1,r); j(aok5:e  
for(int i=l;i<=r;i++){ e^!>W %.7Z  
temp=data; uwI$t[  
} <Wr n/%tL  
int i1=l; =Jyi9VN=&  
int i2=mid+1; .)(5F45Wg  
for(int cur=l;cur<=r;cur++){ (1%O;D.*?{  
if(i1==mid+1)  N>V\  
data[cur]=temp[i2++]; ,zF^^,lO7  
else if(i2>r) Cx~,wk;=  
data[cur]=temp[i1++]; A4K8DP  
else if(temp[i1] data[cur]=temp[i1++]; y26?>.!  
else 6(pa2  
data[cur]=temp[i2++]; 0*J},#ba$  
} F TgqE@  
} cnw?3/J  
H8!; XB  
} 8kdJ;%^N  
Pk ?M~{S  
改进后的归并排序: 4H9mKR  
i<\WRzVT  
package org.rut.util.algorithm.support; #'y4UN  
Dpb prT7_  
import org.rut.util.algorithm.SortUtil; oaac.7.fV  
Jb;@'o6  
/** 7&`Yl[G  
* @author treeroot 6Pp3*O`/V  
* @since 2006-2-2 %2@O,uCo@  
* @version 1.0 ?3#L?Cq  
*/ }1kZF{KD<[  
public class ImprovedMergeSort implements SortUtil.Sort { >mAi/TZC  
tUGnp'r  
private static final int THRESHOLD = 10; m'n<.1;1{j  
YMG~k3Yb  
/* X_HU?Q_N  
* (non-Javadoc) 'Lu d=u{  
* f|+aa6hN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E !EENg  
*/ S7v# `#  
public void sort(int[] data) { 61SbBJ6[  
int[] temp=new int[data.length]; 9P1!<6mN\  
mergeSort(data,temp,0,data.length-1); Zdfruzl&`  
} a&z$4!wQB  
>PS`;S!(  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0n/+X[%Ti  
int i, j, k; ;$Pjl8\  
int mid = (l + r) / 2; d~abWBgC`  
if (l == r) )+ (GE  
return; gmUX 2x(  
if ((mid - l) >= THRESHOLD) vqhu%ZyP  
mergeSort(data, temp, l, mid); ooA%/  
else B<{Yj}..  
insertSort(data, l, mid - l + 1); e;8nujdG"  
if ((r - mid) > THRESHOLD) (jI_Dk;  
mergeSort(data, temp, mid + 1, r); {Gvv^.H7  
else =G\N1E  
insertSort(data, mid + 1, r - mid); `E2RW{$A  
Oa-(Xp,n#  
for (i = l; i <= mid; i++) { RW`+F|UbE  
temp = data; T9NTL\;  
} b QgtZHO  
for (j = 1; j <= r - mid; j++) {  0`QF:  
temp[r - j + 1] = data[j + mid]; [;Y*f,UG_-  
} ruU &.mZ  
int a = temp[l]; $tqr+1P  
int b = temp[r]; _T.T[%-&=  
for (i = l, j = r, k = l; k <= r; k++) { ;9;jUQ]MyG  
if (a < b) { bLsN?_jy  
data[k] = temp[i++]; 7pO/!Lm  
a = temp; >&[q`i{  
} else { O0_kLH$.  
data[k] = temp[j--]; 2TccIv  
b = temp[j]; E#n=aY~u-  
} /?%1;s:'  
} *v#Z/RrrA  
} T+j-MR}{\  
VQ7A"&hh  
/** rI#,FZ  
* @param data cU_:l.b  
* @param l cqG&n0zb  
* @param i /0YO`])"  
*/ :h8-y&;  
private void insertSort(int[] data, int start, int len) { Gp0yRT.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); cT|aQM@iW  
} :>-&  
} 7-Mm+4O9  
} KY+BXGW*  
} h4E[\<?  
a}g <<{  
堆排序: 24I\smO  
+>QD4z#  
package org.rut.util.algorithm.support; )}to7r7 `  
9P& \2/ {  
import org.rut.util.algorithm.SortUtil; 63SmQsv  
+W+o~BE  
/** Hto+spW  
* @author treeroot PUEEfq!%  
* @since 2006-2-2 4Z0Y8y8)  
* @version 1.0 wCt!.<, .  
*/ 'M35L30  
public class HeapSort implements SortUtil.Sort{ f {j`d&|  
]D<3y IGS  
/* (non-Javadoc) J'C%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #k t+ )>  
*/ =JE5/  
public void sort(int[] data) { dO!B=/  
MaxHeap h=new MaxHeap(); 8SN4E  
h.init(data); a 9!.e rM  
for(int i=0;i h.remove(); v[]&yD  
System.arraycopy(h.queue,1,data,0,data.length); MDauHtF,  
} h\/T b8  
`s8!zy+  
private static class MaxHeap{ i4\DSQJ  
G O[u  
void init(int[] data){ _F`RwBOjs  
this.queue=new int[data.length+1]; *6wt+twH  
for(int i=0;i queue[++size]=data; 5Ve T8/7Q  
fixUp(size); \# _w=gs<i  
} AvcN,  
} IoCi(N;  
@a}\]REn  
private int size=0; ;<H\{w@D  
ki ?ETC  
private int[] queue; 9+!"[  
lpnPd{kE  
public int get() { BM[jF=0  
return queue[1]; o)+Uyl   
} Q tl!f  
'RpX&g  
public void remove() { 5@^['S4%8*  
SortUtil.swap(queue,1,size--); _n+ 5{\z  
fixDown(1); <_#a%+5d  
} }CQ)W1mO"  
file://fixdown .$zo_~ mR  
private void fixDown(int k) { &+")~2 +  
int j; H'?dsc  
while ((j = k << 1) <= size) { !Q=xIS  
if (j < size %26amp;%26amp; queue[j] j++; ^oDSU7j5,  
if (queue[k]>queue[j]) file://不用交换 UF;iw  
break; zXGi  
SortUtil.swap(queue,j,k); k3UKGP1  
k = j; zh Vkn]z~*  
} Qsg([K  
} j7qGZ"8ak  
private void fixUp(int k) { N*'d]P2P`J  
while (k > 1) { Eb89B%L62G  
int j = k >> 1; HME`7dw?  
if (queue[j]>queue[k]) )KKmV6>b  
break; B`?5G\7L  
SortUtil.swap(queue,j,k); W+BHt{  
k = j; Fjw+D1q.  
} Y(R .e7]  
} !h>aP4ofT  
sEx`9_oZ  
} <nJ8%aY,  
]] 50c  
} '7UIzk|  
XX'mM v  
SortUtil:  lx&;?QQ  
\s_`ZEB  
package org.rut.util.algorithm; G$E+qk nJL  
}5=tUfh)]'  
import org.rut.util.algorithm.support.BubbleSort; li&&[=6A  
import org.rut.util.algorithm.support.HeapSort; )BmO[AiOM  
import org.rut.util.algorithm.support.ImprovedMergeSort; p* tAwl  
import org.rut.util.algorithm.support.ImprovedQuickSort; 6MmkEU z  
import org.rut.util.algorithm.support.InsertSort; 5^Ps(8VbS  
import org.rut.util.algorithm.support.MergeSort; _e$T'*q  
import org.rut.util.algorithm.support.QuickSort; q]wP^;\Jl  
import org.rut.util.algorithm.support.SelectionSort; F1NYpCR  
import org.rut.util.algorithm.support.ShellSort; qHE(p+]E  
?U(`x6\:  
/** ?btZdnQ))S  
* @author treeroot #_'| TT>p#  
* @since 2006-2-2 '<Jqp7$dL  
* @version 1.0 aUbmEHFTV  
*/ *V?p&/>MT  
public class SortUtil { %<@x(q  
public final static int INSERT = 1; (}MN16!  
public final static int BUBBLE = 2; T*rx5*:o  
public final static int SELECTION = 3; 2-_d~~O1N  
public final static int SHELL = 4; 4+q3 Kw  
public final static int QUICK = 5; ,7ZV;f 81  
public final static int IMPROVED_QUICK = 6; 15CKcM6  
public final static int MERGE = 7;  @"L*!  
public final static int IMPROVED_MERGE = 8; -}9>#<v  
public final static int HEAP = 9; b>f{o_  
ok(dCAKP  
public static void sort(int[] data) { Y1 *8&xT  
sort(data, IMPROVED_QUICK); Kd;)E 9Ti  
} ^'Qe.DW[  
private static String[] name={ aLO'.5 ~^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" D0LoT?$N  
}; ?(>fB2^  
eY8rm  
private static Sort[] impl=new Sort[]{ d< b,].  
new InsertSort(), */y (~O6  
new BubbleSort(), .a7!*I#g  
new SelectionSort(), j S<."a/n  
new ShellSort(), WbGN 5?9Q  
new QuickSort(), @q+X:K5b  
new ImprovedQuickSort(), 1[4 0\sM  
new MergeSort(), PEPf=sm  
new ImprovedMergeSort(), v-!^a_3Ui  
new HeapSort() ' ;3#t(J;  
}; !b8.XGo  
Q[MWzsx  
public static String toString(int algorithm){ h9I vuv'  
return name[algorithm-1]; v 6KRE3:V  
} L<0eIw  
.?)gn]#  
public static void sort(int[] data, int algorithm) { 6 B*,Mu4A  
impl[algorithm-1].sort(data); v&Oc,W  
} 2dnyIgi  
'yNS(Bg=  
public static interface Sort { Zx 5Ue#I  
public void sort(int[] data); t>JPK_b0  
} `w EAU7m:  
69$gPY'3  
public static void swap(int[] data, int i, int j) { Sq[LwJ  
int temp = data; ' oS= d  
data = data[j]; 1)hO!%  
data[j] = temp; tPaNhm[-q7  
} =_Ip0FfK!  
} 9}jezLI/3  
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