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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。 %`>nS@1zp  
插入排序: F"&~*m^+  
C7rNV0.Fq  
package org.rut.util.algorithm.support; E@@5BEB ~  
S>h;K`  
import org.rut.util.algorithm.SortUtil; 15%w 8u  
/** '8Q]C*Z  
* @author treeroot +c(zo4nZ  
* @since 2006-2-2 ^T*?>%`  
* @version 1.0 ![`Ay4AZ@a  
*/ ykl .1(  
public class InsertSort implements SortUtil.Sort{ rSZd!OQ  
Eo{"9j\  
/* (non-Javadoc) 3.|S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .<jr0,i  
*/ YPU*@l>  
public void sort(int[] data) { }#L^!\V }  
int temp; *@Lp`thq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p`b"-[93  
} d74d/l1*{  
} 2)G %)'  
} 9!6f-K  
j/R[<47  
} zz+$=(T:M  
KC/=TSSXd.  
冒泡排序: ;XF:\<+  
>"|B9Woc  
package org.rut.util.algorithm.support; iX0i2ek  
\]</w5 Pi,  
import org.rut.util.algorithm.SortUtil; f$+,HB  
9{RB{<Se!  
/** }p}[j t  
* @author treeroot }=%oX}[  
* @since 2006-2-2 ?{/4b:ua  
* @version 1.0 / : L?~  
*/ #yI mKEYX  
public class BubbleSort implements SortUtil.Sort{ k9k XyX[  
p2ogn}`  
/* (non-Javadoc) LCZ\4g05  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &|Bc7+/P  
*/ A#Iyb){Y  
public void sort(int[] data) { tz5e"+Tz  
int temp; W=j[V Oq  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Cbg!:Cws  
if(data[j] SortUtil.swap(data,j,j-1); FKIw!m ~  
} tXoWwQD;Y  
} q;R],7Re  
} ;|p BFKx  
} ,=UK}*e"  
E0Y-7&Fv  
} RTE8Uq36  
RP~|PtLw_  
选择排序: tmv&U;0Z  
Fpm|_f7  
package org.rut.util.algorithm.support; y`\@N"Cf  
 `7 vHt`  
import org.rut.util.algorithm.SortUtil; :Pvzl1  
gYNjzew'  
/** 1$D_6U:H0  
* @author treeroot +b.g$CRr  
* @since 2006-2-2 T^Y([23  
* @version 1.0 [h^2Y&Au5  
*/ M^O2\G#B  
public class SelectionSort implements SortUtil.Sort { *C5R}9O5  
isQ[ Gc!8  
/* !B\R''J5  
* (non-Javadoc) ,VCyG:dw  
* W{5#@_pL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {1IfU  
*/ ZX>AE3wk  
public void sort(int[] data) { S4'   
int temp; \ Pj  
for (int i = 0; i < data.length; i++) { !zkZQ2{Wn  
int lowIndex = i; u -;_y='m  
for (int j = data.length - 1; j > i; j--) { eIz<)-7:  
if (data[j] < data[lowIndex]) { :ctu5{"UJ  
lowIndex = j; _oHNkKQ  
} [#l*_0  
} MXw hxk#E  
SortUtil.swap(data,i,lowIndex);  Q?nN!e T  
} U* i{5/$  
} ;*Ivn@L  
oE+R3[D?r  
} 2^y ^q2(r  
B.dH(um  
Shell排序: .ni_p 6!  
4(|cG7>9-  
package org.rut.util.algorithm.support; ba[1wFmcL  
qHuZcht  
import org.rut.util.algorithm.SortUtil; +?:7O=Y  
z`!XhU  
/** %K>,xiD)  
* @author treeroot }])oM|fgO  
* @since 2006-2-2 )\eI;8  
* @version 1.0 s!?`T1L  
*/ lBK}VU^  
public class ShellSort implements SortUtil.Sort{ :[O 8  
()5[x.xK@  
/* (non-Javadoc) X;i~ <Tq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EH256f(&  
*/ gu0j.XS^  
public void sort(int[] data) { \MbB#  
for(int i=data.length/2;i>2;i/=2){ eM$sv9?  
for(int j=0;j insertSort(data,j,i); ?\t#1"d  
} }q $5ig  
} eO?p*"p"F  
insertSort(data,0,1); oXb;w@:  
} Fx;QU)1l3  
)6q,>whI]  
/** r[BVvX/,F  
* @param data l8I /0`_  
* @param j q=%RDG+  
* @param i 9;r)#3Q[^  
*/ [P&7i57  
private void insertSort(int[] data, int start, int inc) { mS^tX i5hg  
int temp; 9f hsIe  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;\]b T;#  
}  f4Xk,1Is  
} ;D:9+E<>a  
} @)|C/oA  
YL]Z<%aKt  
} |G?htZF  
vRs,zL$W  
快速排序: TygW0b 1  
8n'B6hi  
package org.rut.util.algorithm.support; :c8&N-`  
E^vJ@O  
import org.rut.util.algorithm.SortUtil; wN;^[F  
.}OR  
/** M}yDXJx  
* @author treeroot r[4tPk  
* @since 2006-2-2 M%ICdIc'  
* @version 1.0 ` :o4'CG  
*/ 77\] B  
public class QuickSort implements SortUtil.Sort{ LIcM3_.  
$wo?!gt  
/* (non-Javadoc) }T&iewk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )%`^xR  
*/ fA+ ,TEB~d  
public void sort(int[] data) { k@/sn (x  
quickSort(data,0,data.length-1); fh](K'P#^  
} p-Kz-+A[  
private void quickSort(int[] data,int i,int j){ CIb2J)qev  
int pivotIndex=(i+j)/2; ti I.W  
file://swap M luVx'  
SortUtil.swap(data,pivotIndex,j); GBRa.;Kk  
/atW8 `&  
int k=partition(data,i-1,j,data[j]); R)QC)U  
SortUtil.swap(data,k,j); V:VO[e<e  
if((k-i)>1) quickSort(data,i,k-1); ~GL] wF2#  
if((j-k)>1) quickSort(data,k+1,j); n ~shK<!C  
aqj@Cjk4Z  
} gk"$,\DI  
/** (NF~Ck$#q  
* @param data _3TY,l~  
* @param i )N7Y^CN~  
* @param j Qa-K$dm%  
* @return sj HrPs e  
*/ _*1`@  
private int partition(int[] data, int l, int r,int pivot) { L)@?e?9  
do{ J|~MC7#@q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ? }kG`q  
SortUtil.swap(data,l,r); hRUhX[  
} YVHm{A1b0  
while(l SortUtil.swap(data,l,r); FB{KH .  
return l; C -\S/yd  
} ;<j0f~G`  
y CVI\y\B  
} i*/Yz*<  
D/vOs[X o,  
改进后的快速排序: 7?GIS '  
8B\2Zfe  
package org.rut.util.algorithm.support; ^,/RO5  
.k%[4:Fe  
import org.rut.util.algorithm.SortUtil; ? 4q4J8j  
;[=8B \?  
/** M$/|)U'W  
* @author treeroot ^j31S*f&:  
* @since 2006-2-2 }]lr>"~y}  
* @version 1.0 L"o>wYx  
*/ gm igsXQ  
public class ImprovedQuickSort implements SortUtil.Sort { Z -W(l<  
>[*8I\*@n  
private static int MAX_STACK_SIZE=4096; ykV 5  
private static int THRESHOLD=10; 05b_)&4R  
/* (non-Javadoc) A v2 08}Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jRJn+  
*/ 0n;< ge&~R  
public void sort(int[] data) { CGY]r.O*  
int[] stack=new int[MAX_STACK_SIZE]; -f%'  
q*_/to  
int top=-1; a&c6.#E{y  
int pivot; +l9!Fl{MK\  
int pivotIndex,l,r; Mxyb5h  
glM$R&/  
stack[++top]=0; c'%-jG)\  
stack[++top]=data.length-1; SYCEQ5 -  
_B/ dWA,P  
while(top>0){ Yu)NO\3&  
int j=stack[top--]; f !I[>&n  
int i=stack[top--]; ^c^#dpn  
Fcd3H$Na;  
pivotIndex=(i+j)/2; bN]+_ mF  
pivot=data[pivotIndex]; '8!Y D?n  
g# Sl %Y  
SortUtil.swap(data,pivotIndex,j); yku5SEJ\  
0 q} *S~  
file://partition 62 k^KO6Y  
l=i-1; a yCY~=i  
r=j; ?[g=F <r  
do{ "Zl5<  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {khqu:HUn`  
SortUtil.swap(data,l,r); 5,_u/5Y4  
} IsZHe lg  
while(l SortUtil.swap(data,l,r); }<@b=_>S  
SortUtil.swap(data,l,j); WD]p U  
QdL`|  
if((l-i)>THRESHOLD){ o0ifp=V y  
stack[++top]=i; HCyv]LR  
stack[++top]=l-1; ts\5uiB<%  
} S?{#r  
if((j-l)>THRESHOLD){ zsX1QN16  
stack[++top]=l+1; &7PG.Ff!r  
stack[++top]=j; nExU#/*~^  
} qf!p 9@4F[  
YH vLGc%  
} oU056  
file://new InsertSort().sort(data); g!lWu[d  
insertSort(data); 8u6:=fxb  
} k5:G-BQ:  
/** 9 Vkb>yFX'  
* @param data Nl^;A> <u  
*/ mZSD(  
private void insertSort(int[] data) { _jLL_GD  
int temp; o]yl ;I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w80oXXs[#  
} ,l !Ta "  
} _FH`pv  
} =Je[c,&j$?  
tnH2sHby  
} cAY:AtD  
d:BG#\e]v  
归并排序: Yw^m  
wSa)*]%  
package org.rut.util.algorithm.support; uJzG|$;  
@;*Ksy@1O  
import org.rut.util.algorithm.SortUtil; (s.0P O`  
,\_1w  
/** ,K9*%rW)  
* @author treeroot 8K:y\1  
* @since 2006-2-2 sDPs G5q<  
* @version 1.0 |TS>h wkI  
*/ AL9chYP}/  
public class MergeSort implements SortUtil.Sort{ n^Hm;BiE#  
NQBpX  
/* (non-Javadoc) &e @2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TE3lK(f  
*/ d,+Hd2o^X  
public void sort(int[] data) { 5gYRwuf  
int[] temp=new int[data.length]; tSc Pa,(  
mergeSort(data,temp,0,data.length-1); rp3V3]EE  
} r_ I5. gK  
r[|Xy>Zj  
private void mergeSort(int[] data,int[] temp,int l,int r){ OLyf8&AU@  
int mid=(l+r)/2; (}Z@R#njH  
if(l==r) return ; /rWd=~[MO  
mergeSort(data,temp,l,mid); ojcA<60 '  
mergeSort(data,temp,mid+1,r); 8aK)#tNWN  
for(int i=l;i<=r;i++){ A P)L:7w'e  
temp=data; eD,.~Y#?=  
}  _zY# U9  
int i1=l; FHj" nB  
int i2=mid+1; ]<ldWL  
for(int cur=l;cur<=r;cur++){ }AB, 8n`  
if(i1==mid+1) ~IYUuWF(  
data[cur]=temp[i2++]; +"rDT1^V  
else if(i2>r) \UPjf]&  
data[cur]=temp[i1++]; _Gn2o2T  
else if(temp[i1] data[cur]=temp[i1++]; ~xkeuU  
else )eUh=eW  
data[cur]=temp[i2++]; S0zD"T  
} ]~9t Y n  
} ZGexdc%  
(?n=33}Ci  
} Q_"]+i]s@  
ck: T,F{}  
改进后的归并排序: 3O,+=?VK  
my(2;IJ#{  
package org.rut.util.algorithm.support; Ro\8ZXUQa  
0(eB ZdRO  
import org.rut.util.algorithm.SortUtil; )(bW#-  
LInz<bc<(  
/** YWe{juXSw  
* @author treeroot mk;&yh  
* @since 2006-2-2 4w*Skl=F}  
* @version 1.0 %RTBV9LIXr  
*/ <^&ehy:7y  
public class ImprovedMergeSort implements SortUtil.Sort { z06r6  
,)0H3t  
private static final int THRESHOLD = 10; Bo)3!wO8  
ni.cTOSx  
/* nCUg ,;_=  
* (non-Javadoc) h}[-'>{  
* e%svrJ2   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eWCb73  
*/ =$u! 59_dE  
public void sort(int[] data) { <CS(c|7  
int[] temp=new int[data.length]; j_K4;k#r  
mergeSort(data,temp,0,data.length-1); @Xt*Snd  
} T. }1/S"m  
|?!~{-o  
private void mergeSort(int[] data, int[] temp, int l, int r) { "Lzi+1  
int i, j, k; Vx$\hcG  
int mid = (l + r) / 2; 9Vg?{v!yn  
if (l == r) ;y,5k?  
return; 3k\#CiB{  
if ((mid - l) >= THRESHOLD) caIL&G,  
mergeSort(data, temp, l, mid); bp* ^z,w  
else \d 6C%S!  
insertSort(data, l, mid - l + 1); +[M6X} TQ  
if ((r - mid) > THRESHOLD) [A~y%bI"  
mergeSort(data, temp, mid + 1, r); Z?6%;n^ 54  
else Dt}JG6S  
insertSort(data, mid + 1, r - mid); B-xGX$<z  
p, h9D_  
for (i = l; i <= mid; i++) { E%yNa]\P  
temp = data; %aHB"vi6  
} 2y//'3[  
for (j = 1; j <= r - mid; j++) { SON-Z"v  
temp[r - j + 1] = data[j + mid]; +NeOSQSj  
} (uXL^oja  
int a = temp[l]; VU#`oJ:{  
int b = temp[r]; 3-[q4R  
for (i = l, j = r, k = l; k <= r; k++) { 7r7YNn/?  
if (a < b) { 'H3^e}   
data[k] = temp[i++]; @ju@WY45$^  
a = temp; ;ic3).H  
} else { |LRedD7n  
data[k] = temp[j--]; { d=^}-^   
b = temp[j]; iJ-23_D  
} #H)vK"hF  
} tClg*A;|B  
} QiQ_bB!\  
B\=L3eL<D  
/** UxbjA- U[  
* @param data Ok|*!!T  
* @param l 8hu<E4]L  
* @param i Dl<bnx;0  
*/ @D.}\(  
private void insertSort(int[] data, int start, int len) { lAS#874dE  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2POXj!N  
} 44gPCW,u  
} cA2V2S)  
} - \ 5v^l  
} s6H]J{1F  
RM]\+BK  
堆排序: fFMlDg[];  
2L:_rR#w  
package org.rut.util.algorithm.support; `[z<4"Os   
KT_!d*  
import org.rut.util.algorithm.SortUtil; SOs:]U-T3  
SbND Y{5RO  
/** !F*5M1Kjd  
* @author treeroot 7TgOK   
* @since 2006-2-2 \MsTB|Z  
* @version 1.0 Umz KY  
*/ <5-[{Q/2z  
public class HeapSort implements SortUtil.Sort{ %<)2/|lCd  
<C_jF  
/* (non-Javadoc) 68NYIyTW9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |EIng0a  
*/ 9/{(%XwX  
public void sort(int[] data) { ~,d,#)VE2q  
MaxHeap h=new MaxHeap(); "LHcB]^<  
h.init(data); s28`OKC}  
for(int i=0;i h.remove(); !Xh=k36  
System.arraycopy(h.queue,1,data,0,data.length); g$":D  
} #9B)Xx!g  
J; 3{3  
private static class MaxHeap{ qt"G[9;  
k|v3.< -  
void init(int[] data){  j?A/#  
this.queue=new int[data.length+1]; ^T( .k=  
for(int i=0;i queue[++size]=data; T%x}Y#U'`  
fixUp(size); |Z|-q"Rf  
} |+"<wEKI  
} nii A7Ux  
ySk R>y  
private int size=0; -0d0t!  
QMA%$  
private int[] queue; %"kPvI3Y  
bH-ub2@qO  
public int get() { P#E&|n7DT  
return queue[1]; Yab%/z2:  
} _A M*@|p,  
l3KVW5-!gS  
public void remove() { !xzeMVI  
SortUtil.swap(queue,1,size--); O6Vtu Ws%  
fixDown(1); $CxKuB(  
} Yw22z #K  
file://fixdown Kh"?%ZIa  
private void fixDown(int k) { N@;?CKU  
int j; -<c=US  
while ((j = k << 1) <= size) { jTf@l?|  
if (j < size %26amp;%26amp; queue[j] j++; F;>V>" edl  
if (queue[k]>queue[j]) file://不用交换 Av @b!iw+  
break; &qLf@1AD  
SortUtil.swap(queue,j,k); 3T31kQv{  
k = j;  N O2XA\  
} w4_ U0 n3  
} x[4`fM.m*  
private void fixUp(int k) { AG3>V+k{Lv  
while (k > 1) { 9TU88]  
int j = k >> 1; 1;d$#j  
if (queue[j]>queue[k]) 8a &:6Zuo  
break; Zvhsyz|  
SortUtil.swap(queue,j,k); fs|)l$Rd  
k = j; UN7EF/!Zz  
} zUDg&-J3  
} V@\gS"Tu  
'QG xd!4  
} \Lq h j  
Y}@&h!  
} g(nPQOs$u  
ZkgV_<M|  
SortUtil: G=)i{oC  
+QB"8-  
package org.rut.util.algorithm; IWBX'|}K  
> pgX^  
import org.rut.util.algorithm.support.BubbleSort; jy7\+i  
import org.rut.util.algorithm.support.HeapSort; MtM%{=&_  
import org.rut.util.algorithm.support.ImprovedMergeSort; y9_V  
import org.rut.util.algorithm.support.ImprovedQuickSort; O7u(}$D L  
import org.rut.util.algorithm.support.InsertSort; ]~844J p  
import org.rut.util.algorithm.support.MergeSort; ioa U*%  
import org.rut.util.algorithm.support.QuickSort; OHv[#xGuV?  
import org.rut.util.algorithm.support.SelectionSort; BK*x] zG$  
import org.rut.util.algorithm.support.ShellSort; vrl;"Fm+  
SD#]$v  
/** M])ZK  
* @author treeroot )W|w C#  
* @since 2006-2-2 -T!f,g3vW  
* @version 1.0 ~"dA~[r L  
*/ ::o lN  
public class SortUtil { _t:$XJ`bTk  
public final static int INSERT = 1; 6L:x^bM  
public final static int BUBBLE = 2; J`^ag'  
public final static int SELECTION = 3; 2C2fGYu  
public final static int SHELL = 4; jnd[6v=C7-  
public final static int QUICK = 5; <DpevoF  
public final static int IMPROVED_QUICK = 6; >PB4L_1  
public final static int MERGE = 7; <CRP ^_c  
public final static int IMPROVED_MERGE = 8; QU#w%|  
public final static int HEAP = 9; d^/3('H6  
-HQQw$  
public static void sort(int[] data) { z,|r*\dw  
sort(data, IMPROVED_QUICK); TP VVck-T8  
} B! rTD5a  
private static String[] name={ V zBqjE_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" , l%C X.9  
}; c_\YBe]wJ  
;V@WtZv  
private static Sort[] impl=new Sort[]{ %lL.[8r|  
new InsertSort(), ]d55m/(   
new BubbleSort(), Ok{*fa.PK  
new SelectionSort(), $J4 *U  
new ShellSort(), IOTR/anu  
new QuickSort(), I6~pV@h^=  
new ImprovedQuickSort(), ~0?mBy!-O  
new MergeSort(), Xsa2(-  
new ImprovedMergeSort(), aF8fqu\  
new HeapSort() jNu9KlN  
}; Yj%U >),8  
z MLK7+  
public static String toString(int algorithm){ [N1hWcfvd  
return name[algorithm-1]; )_a~} U]=.  
} b`L%t:u{d  
Cv }Qwy  
public static void sort(int[] data, int algorithm) { "~`I::'c  
impl[algorithm-1].sort(data); Z.d 7U~_  
} FE" y\2}  
- *F(7$  
public static interface Sort { Kqun^"Df  
public void sort(int[] data);  R=.4  
} ?MXejEC  
.id)VF-l  
public static void swap(int[] data, int i, int j) { NxSu 3e~PS  
int temp = data; +U_=*"@|  
data = data[j]; * +'x~a  
data[j] = temp; Ny_lrfh)[  
} F1iGMf-8  
} 8iW;y2qF  
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