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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。 6O[wVaC1u  
插入排序: {R6Zwjs  
^`B##9g~  
package org.rut.util.algorithm.support; !EyGJa[ i  
e P,XH{s  
import org.rut.util.algorithm.SortUtil; Xk$l-Zfse  
/** u" NIG  
* @author treeroot xSMp[j  
* @since 2006-2-2 EY[Q%  
* @version 1.0 ]R3pBC"Jv  
*/ Ty,)mx){)  
public class InsertSort implements SortUtil.Sort{ JCU3\39}  
G \aLg  
/* (non-Javadoc) wshp{ y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bafz&#;Q'  
*/ ZE3ysLk m  
public void sort(int[] data) { V?L$ ys  
int temp; ^: rNoo  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "3>*i!i  
} #Ot*jb1  
} DJ2]NA$Q*  
} &s}@7htE  
>Qbc(}w  
} yPxG`w'  
+68K[s,FD  
冒泡排序: 7)6Yfa]I%  
#SLxNAH  
package org.rut.util.algorithm.support; pGcx jm  
1j) !d$8  
import org.rut.util.algorithm.SortUtil; qer'V  
+]~w ?^h  
/** 6xzR*~ 7  
* @author treeroot D` `NQ`>A  
* @since 2006-2-2 w)y9!li  
* @version 1.0 sz2SWk^&  
*/ Wj{Rp{}3  
public class BubbleSort implements SortUtil.Sort{ 7[.Q.3FL  
uW-- nXMs  
/* (non-Javadoc) _>)"+z^r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZT6X4 Z  
*/ 1S.e5{  
public void sort(int[] data) { X.4ZLwX=  
int temp; a):Run  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S%gO6&^  
if(data[j] SortUtil.swap(data,j,j-1); R{Kd%Y:2Y  
} }ok nB  
} !m:PBl5  
} "M#`y!__  
} RDZh>K PG  
7 te!>gUW  
} j[Zni D  
8sjHQ)<  
选择排序: iF_r'+j  
a.U:B [v`  
package org.rut.util.algorithm.support; LW 3J$Am  
pmD-]0  
import org.rut.util.algorithm.SortUtil; eHyuO)(xH1  
.VEfd4+ni{  
/** h|uP=0   
* @author treeroot 1YD.jU^;HD  
* @since 2006-2-2 nu%Nt"~[%  
* @version 1.0 F$yFR  
*/ ]fS~N9B  
public class SelectionSort implements SortUtil.Sort { H_f2:Za  
jG ;(89QR/  
/* Y'%I at(z  
* (non-Javadoc) T:~W.3  
* LmdV@gR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _$_CR\$  
*/ *_rGBW  
public void sort(int[] data) { R.'Gg  
int temp; x[@3;_'K  
for (int i = 0; i < data.length; i++) { [gr[0aGBc  
int lowIndex = i; >#n-4NZ;p9  
for (int j = data.length - 1; j > i; j--) { (s*Uz3 sq  
if (data[j] < data[lowIndex]) { qa`(,iN  
lowIndex = j; 7Bd_/A($  
} a} 7KpKCD  
} x(N} ^Hu  
SortUtil.swap(data,i,lowIndex); OiEaVPSI;  
} rL/7wa  
} >:nJTr  
q8v!{Os+#  
} ?G<I N)  
&L`p4AZ  
Shell排序: yVv3S[J  
SFNd,(kB*z  
package org.rut.util.algorithm.support; uQ+$HzxX  
/ hdl  
import org.rut.util.algorithm.SortUtil; <Py/uF|  
0DT2qM[,  
/** 3? CpylCO  
* @author treeroot I _G;;GF  
* @since 2006-2-2 x)mC^  
* @version 1.0  :!FwF65  
*/ /UyE- "S  
public class ShellSort implements SortUtil.Sort{ , .F+x}  
*heQ@ww  
/* (non-Javadoc) L<]P K4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~ZN9 E-uL  
*/ d>psqmQ  
public void sort(int[] data) { ) hB*Hjh  
for(int i=data.length/2;i>2;i/=2){ >G7U7R}R  
for(int j=0;j insertSort(data,j,i); <u/({SZ&  
} "evV/Fg (  
} .1lc'gu5y  
insertSort(data,0,1); =R`2m  
} C}E ea~  
"!?Ya{  
/** t4uxon  
* @param data `d#_66TLr  
* @param j `"4EE}eQc  
* @param i `q*ABsj  
*/ [wYQP6Cyy  
private void insertSort(int[] data, int start, int inc) { biK.HL\V  
int temp; s yvi/6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); FM];+d0  
} aQ\O ]gCE  
} FgaBwd^W  
} 8=uljn/  
Mq$=zsj  
} SBt: `,  
OD|&qsbL  
快速排序: fsu "Lc  
u1<kdTxA N  
package org.rut.util.algorithm.support; |JQ05nb  
9hU@VPB~  
import org.rut.util.algorithm.SortUtil; mQJGKh&Pk  
5H2|:GzUc  
/** \3/'#  
* @author treeroot *^ BE1-  
* @since 2006-2-2  VVY\W!  
* @version 1.0 f^ qQ 5N  
*/ o 8U2vMH  
public class QuickSort implements SortUtil.Sort{ K.~U%v}  
]=Q'1%  
/* (non-Javadoc) gE~31:a^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ok'1  
*/ 6D<A@DR9J  
public void sort(int[] data) { \=~Ap#Mpc4  
quickSort(data,0,data.length-1); duCm+4,.  
} -d]z_ SP@  
private void quickSort(int[] data,int i,int j){ oGZ9@Y)(T  
int pivotIndex=(i+j)/2; `OWB@_u5  
file://swap pV8,b   
SortUtil.swap(data,pivotIndex,j); r{_'2Z_i  
0a5P@;"a  
int k=partition(data,i-1,j,data[j]); cae}dHG2  
SortUtil.swap(data,k,j); NR5A"_'  
if((k-i)>1) quickSort(data,i,k-1); >KJ]\`2>)c  
if((j-k)>1) quickSort(data,k+1,j); 8}"j#tDc  
E7D DMU  
} (@Bm2gH  
/** <Jx{Uv  
* @param data iy 5  
* @param i Gmb57z&:  
* @param j RfD$@q9  
* @return {)M4h?.2  
*/ Velmq'n  
private int partition(int[] data, int l, int r,int pivot) { '"EOLr\Z,  
do{ /zWWUl`:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); KME #5=~  
SortUtil.swap(data,l,r); <|4j<U  
} ?g&]*zc^\  
while(l SortUtil.swap(data,l,r); q% "nk  
return l; E$T#o{pai  
} yRtFUlm`  
C{D2mSS  
} `e bB+gI  
> h9U~#G=  
改进后的快速排序: ATU@5,9  
B.|vmq,u  
package org.rut.util.algorithm.support; ;u%hwlo  
R8E<;^?j  
import org.rut.util.algorithm.SortUtil; x[X.// :  
}fA3{ Ro  
/** C9z{8 ;  
* @author treeroot {MS&t09Wh  
* @since 2006-2-2 R8 KL4g-d  
* @version 1.0 Wi[Y@  
*/ N  P"z  
public class ImprovedQuickSort implements SortUtil.Sort { O Rfl v+  
\S9z.!7v$  
private static int MAX_STACK_SIZE=4096; GHkSU;})  
private static int THRESHOLD=10; 17GyE=Uu  
/* (non-Javadoc) sw&Qks? V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @6E[K'5c1  
*/ ]:njP3r  
public void sort(int[] data) { Z_;' r|c  
int[] stack=new int[MAX_STACK_SIZE]; Zwc b5\Q  
bhI8b/  
int top=-1; [  /D/  
int pivot; #G,e]{gs  
int pivotIndex,l,r; =FE,G*  
IoX(Pa  
stack[++top]=0; , R)[$n  
stack[++top]=data.length-1; (X8N?tJ  
^\!^#rO  
while(top>0){ b&ADj8cKC  
int j=stack[top--]; * n[6H  
int i=stack[top--]; 41.+3VP  
Wj3H  y4  
pivotIndex=(i+j)/2; 2|cIu 'U  
pivot=data[pivotIndex]; >8VJ!Kg4  
=}L[/RL  
SortUtil.swap(data,pivotIndex,j); cr!I"kTgD  
\KEL.}B9E  
file://partition AkF1Hj  
l=i-1; B)(A#&nrb  
r=j; 5!Guf?i  
do{ ^,X+ n5q;m  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Y5;:jYk#<_  
SortUtil.swap(data,l,r); D Lu]d$G  
} v|hi;l@7E  
while(l SortUtil.swap(data,l,r); qjWgyhL  
SortUtil.swap(data,l,j); ;9^B# aTM  
2|T@  
if((l-i)>THRESHOLD){ "}!vYr  
stack[++top]=i; c" l~=1Dr  
stack[++top]=l-1; cx02b-O  
} #*~ (  
if((j-l)>THRESHOLD){ ~(^[TuJC  
stack[++top]=l+1; 2q#$?qs_b  
stack[++top]=j; B<o i,S  
} X@cV']#V  
 Op|Be  
} )FB)ZK;  
file://new InsertSort().sort(data); rF5<x3  
insertSort(data); mr;WxxO5  
} 0}ZuF.  
/** > 1r>cZn  
* @param data  *Vc}W  
*/ L4dbrPE*0  
private void insertSort(int[] data) { 9/'j<v6M  
int temp; wU=(_S,c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hP|5q&wX  
} M- -6oR7  
} j;'NJ~NZ$  
} fpzTv3D=I  
H<qR^a  
} R)H@'X  
?=\h/C  
归并排序: f5O*Njl  
1mB6rp  
package org.rut.util.algorithm.support; g'IS8@  
co;2s-X  
import org.rut.util.algorithm.SortUtil; k<St:X%.O  
s*VZLKO  
/** vzVl2  
* @author treeroot Pukq{/27  
* @since 2006-2-2 Yu8WmX,[  
* @version 1.0 v"s}7trWV  
*/ iA:CPBv_mu  
public class MergeSort implements SortUtil.Sort{ BKGwi2]Ry  
NSxDCTw  
/* (non-Javadoc) 63at lq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L-MpdC  
*/ fc M~4yP?  
public void sort(int[] data) { q-uYfXZ{j  
int[] temp=new int[data.length]; =7$YBCuF  
mergeSort(data,temp,0,data.length-1); al^ yCoB  
} SX;FBO(p  
&"d4J?io`  
private void mergeSort(int[] data,int[] temp,int l,int r){ /  ]I]  
int mid=(l+r)/2; h'N,oDB)  
if(l==r) return ; k6dSj>F>  
mergeSort(data,temp,l,mid); MRiETd"  
mergeSort(data,temp,mid+1,r); XX/cJp  
for(int i=l;i<=r;i++){ =LuA [g  
temp=data; n0EKNMO  
} Ble <n6  
int i1=l; QjRVdb>  
int i2=mid+1; hLBX,r)u  
for(int cur=l;cur<=r;cur++){ ql],Wplg  
if(i1==mid+1) i8 dv|oa  
data[cur]=temp[i2++]; Um*{~=;u  
else if(i2>r) $o-s?";  
data[cur]=temp[i1++]; l_$~~z ~  
else if(temp[i1] data[cur]=temp[i1++]; .lqo>Ta y  
else ; zs4>>^>  
data[cur]=temp[i2++]; V-t!  
} +]B^*99  
} B:Msn)C~  
dGZVWEaPfx  
} xH*OEzN  
2<<,aL*  
改进后的归并排序: vk{dL'  
IUI >/87u  
package org.rut.util.algorithm.support; )=8X[<^i  
HSyohP87  
import org.rut.util.algorithm.SortUtil; D @T,j4o  
0gxbo  
/** F!N;4J5u  
* @author treeroot 8r+R~{  
* @since 2006-2-2 aQkgkV;~  
* @version 1.0 qksN {t  
*/ Av7bp[OD  
public class ImprovedMergeSort implements SortUtil.Sort { %  &{>oEQ  
kE/>Ys@w  
private static final int THRESHOLD = 10; YpXUYNy  
dxxD%lHCF  
/* "o% N`Xlx  
* (non-Javadoc) =|=9\3po  
* hE+6z%A8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i3N _wv{  
*/ 8la.N*  
public void sort(int[] data) { s +^YGB  
int[] temp=new int[data.length]; Cd]d[{NJ;  
mergeSort(data,temp,0,data.length-1); Lab{?!E>U  
} sl>4O]N  
ME{i-E4  
private void mergeSort(int[] data, int[] temp, int l, int r) { |$^,e%bE  
int i, j, k; {WT"\Xj>B?  
int mid = (l + r) / 2; QV7K~qi  
if (l == r) hP,SvN#!2  
return; kR9G;IZ8s  
if ((mid - l) >= THRESHOLD) 0g~WM  
mergeSort(data, temp, l, mid); GAEz :n  
else H>a3\M  
insertSort(data, l, mid - l + 1); f!eC|:D  
if ((r - mid) > THRESHOLD) ?}bSQ)b  
mergeSort(data, temp, mid + 1, r); !G Z2|~f9  
else u3w `(3{ <  
insertSort(data, mid + 1, r - mid); ;F"W6G  
A: 0  
for (i = l; i <= mid; i++) { VNx}ADXu]  
temp = data; `yNNpSdS1  
} 1DN,  
for (j = 1; j <= r - mid; j++) { &(IL`%  
temp[r - j + 1] = data[j + mid]; YNH>^cD1  
} !634 8nU:  
int a = temp[l]; GL9R 5  
int b = temp[r]; lTDF5.aE  
for (i = l, j = r, k = l; k <= r; k++) { i=#r JK=  
if (a < b) { MuO7_*q'n  
data[k] = temp[i++]; u'<Y#bsR#/  
a = temp; 6^s]2mMfk  
} else { ;XZ5r|V}  
data[k] = temp[j--]; &H-39;?u  
b = temp[j]; W9ZT=#>)[  
} rX{QgyY&  
} =3^YKI  
} 4ehajK  
;_%61ZI?M<  
/** #B &D  
* @param data ^-f5;B`\i  
* @param l b=Zg1SqV  
* @param i X CDHd ?Ld  
*/ bv)E>%Yy  
private void insertSort(int[] data, int start, int len) { cs8bRXjHa  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1e _V@Vy  
} ^{zwIH2I]  
} N`Zm[Sv7  
} Q{0-pHr}  
} eWhv X9 <  
@|j`I1r.A  
堆排序: 1x V~EX  
e-]k{_wm  
package org.rut.util.algorithm.support; mO?G[?*\  
Go^W\y   
import org.rut.util.algorithm.SortUtil; pr>K#@^  
T=ox;r  
/** >6@*%LM  
* @author treeroot {MO`0n; rt  
* @since 2006-2-2 IhJ _Yed  
* @version 1.0 a' .o  
*/ "k"q)5c  
public class HeapSort implements SortUtil.Sort{ st:[|`  
b,#cc>76\  
/* (non-Javadoc) OE}L})"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XqyfeY5t  
*/ $lU~3I)  
public void sort(int[] data) { +VAfT\G2  
MaxHeap h=new MaxHeap(); 9 /t}S6b{  
h.init(data); LZX-am`%  
for(int i=0;i h.remove(); bqS*WgMY-  
System.arraycopy(h.queue,1,data,0,data.length); 2j=3i@  
} 0Dc$nL?TqX  
yV$p(+KkS  
private static class MaxHeap{ ?F(t`0=  
IgptiZ7~!  
void init(int[] data){ 8T&m{s  
this.queue=new int[data.length+1]; sog?Mvoq  
for(int i=0;i queue[++size]=data; OJbY\U  
fixUp(size); deda=%w0  
} o5BOe1_Pw  
} $qP9EZ]JC  
RRV@nDf   
private int size=0; P7 (&*=V  
S]K^wj[  
private int[] queue; 85w D<bN27  
f2uog$H k  
public int get() { wI#rAx7f-  
return queue[1]; E@0w t^  
} ag:#82C  
X.j#??  
public void remove() { f*NtnD=rJ  
SortUtil.swap(queue,1,size--); i._d^lR\t  
fixDown(1); vTh-I&}:  
} [<1i[\^  
file://fixdown 3P^eD:) w  
private void fixDown(int k) { j ;VYF  
int j; r1}7Q7-z  
while ((j = k << 1) <= size) { 3|/ ;`KfQ  
if (j < size %26amp;%26amp; queue[j] j++; lY?TF  
if (queue[k]>queue[j]) file://不用交换 X'7 T"5!  
break; $Z.c9rY1  
SortUtil.swap(queue,j,k); Y^2Ma878  
k = j; 5NJ@mm{0  
} UF,T  
} vkc(-n  
private void fixUp(int k) { 4JU#3  
while (k > 1) { i*.Z~$  
int j = k >> 1; zw\"!=r^  
if (queue[j]>queue[k]) \ 8ulX>]  
break; ~AjbF(Ad  
SortUtil.swap(queue,j,k); QTcngv[  
k = j; Y49kq}  
} &fiDmUxj  
} )Qw|)='-  
[GU!],Y  
} _L%/NXu,  
|n01T_Z)P  
} *v8Cj(69  
=1VY/sv  
SortUtil: IW6;ZDP  
/bt@HFL|`  
package org.rut.util.algorithm; @<>](4D  
JeWW~y`e?{  
import org.rut.util.algorithm.support.BubbleSort; 5C#&vYnq  
import org.rut.util.algorithm.support.HeapSort; /3FC@?l w4  
import org.rut.util.algorithm.support.ImprovedMergeSort; :_)Xe*O  
import org.rut.util.algorithm.support.ImprovedQuickSort; dH#o11[  
import org.rut.util.algorithm.support.InsertSort; rf1-E57#  
import org.rut.util.algorithm.support.MergeSort; _Xsn1  
import org.rut.util.algorithm.support.QuickSort; (a&.Ad0{  
import org.rut.util.algorithm.support.SelectionSort; A3C<9wXx  
import org.rut.util.algorithm.support.ShellSort; UCvMW*gs  
w`F}3zm  
/** :S~XE  
* @author treeroot 2s|[!:L5  
* @since 2006-2-2 ${6 ;]ye  
* @version 1.0 z4UeUVfZ}  
*/ )Je iTh^  
public class SortUtil { lYQcQ*-  
public final static int INSERT = 1; ME0ivr*=:  
public final static int BUBBLE = 2; ,h8)5Mj/J  
public final static int SELECTION = 3; ?>4^e:  
public final static int SHELL = 4; 5x=tOR/h  
public final static int QUICK = 5; |{t}ULc  
public final static int IMPROVED_QUICK = 6; ~y B[}BPf  
public final static int MERGE = 7; ',J3^h!b  
public final static int IMPROVED_MERGE = 8; }{j[  
public final static int HEAP = 9; ?B@iBOcu[  
O23f\pm&  
public static void sort(int[] data) { vERsrg;(  
sort(data, IMPROVED_QUICK); z'fGHiX7.0  
} m(*CuM[E  
private static String[] name={ N9,n/t  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" U{i9h6b"18  
}; |_!xA/_U'T  
D{a{$P r  
private static Sort[] impl=new Sort[]{ P(A%z2Ql  
new InsertSort(), "xnek8F  
new BubbleSort(), { #>@h7  
new SelectionSort(), ]%shs  
new ShellSort(), }tc,3> /  
new QuickSort(), ]J_Dn\  
new ImprovedQuickSort(), Bv3?WW  
new MergeSort(), ~~'XY(\L@  
new ImprovedMergeSort(), QJOP*<O  
new HeapSort() mP3:Fc _G  
}; b$.N8W%  
Ao?H.=#y  
public static String toString(int algorithm){ Wm Od1  
return name[algorithm-1]; 8.]dThaq  
} 9dy"Y~c  
NoDq4>   
public static void sort(int[] data, int algorithm) { GW.s\8w  
impl[algorithm-1].sort(data); n# Z6d`  
} \*d@_oQ$  
1 *;?uC\  
public static interface Sort { 0+cRUH9Ew  
public void sort(int[] data); o` ,&yq.  
} kTs)u\r.  
RQ}x7< /{  
public static void swap(int[] data, int i, int j) { t2tH%%Rs  
int temp = data; UI>-5,X  
data = data[j]; wQ(ME7 t  
data[j] = temp; /M B0%6m  
} .^P^lQT]>  
} 4lvo9R  
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