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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。 k8?._1t  
插入排序: , 5W7a  
Sr \y1nt  
package org.rut.util.algorithm.support; qA>#;UTp  
-,y p?<  
import org.rut.util.algorithm.SortUtil; ]Thke 4  
/** t4oD> =,92  
* @author treeroot rl}<&aPH  
* @since 2006-2-2 jSjC43lh  
* @version 1.0 L6h<B :l  
*/ g+B7~Z5,  
public class InsertSort implements SortUtil.Sort{ ]N 9N][n  
9"#C%~=+  
/* (non-Javadoc) p_I^7 $  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e]VW\ 6J&  
*/ h(=<-p @  
public void sort(int[] data) { 7(}'jZ  
int temp; lp(2"$nQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gwk$<6E  
} xt|^~~ /  
} %,WH*")  
} yeiIP  
CHGa_  
} )#i@DHt=  
+&S 7l%-  
冒泡排序: x'g4DYl  
d.? }>jl  
package org.rut.util.algorithm.support; 4x6n,:;  
>B6* `3v  
import org.rut.util.algorithm.SortUtil; x=cucZ  
$wAR cS  
/** u\Cf@}5(  
* @author treeroot U)G.Bst  
* @since 2006-2-2 # >k|^*\  
* @version 1.0 G4'Ia$  
*/ @ eJ8wf]  
public class BubbleSort implements SortUtil.Sort{ (tYZq86`  
'i%r  
/* (non-Javadoc) t+a.,$U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) + ,Krq 3P  
*/ 2PAu>}W*  
public void sort(int[] data) { - )(5^OQ  
int temp; Bf*>q*%B{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ u@dvFzc  
if(data[j] SortUtil.swap(data,j,j-1); HF0G=U}i  
} Go{,< gm  
} /K|(O^nw  
} V22z-$cb  
} xnMcxys~  
?JZ$M  
} f|,Kh1{e  
k\[(;9sf.  
选择排序: #_.J kY  
yMWh#[phH  
package org.rut.util.algorithm.support; k&ooV4#f6  
 U${W3Ra  
import org.rut.util.algorithm.SortUtil; |OJWQU![by  
n725hY6}<l  
/** ZGZNZ}~#  
* @author treeroot Rq}lW.<r  
* @since 2006-2-2 \'Ae,q|w  
* @version 1.0 sex\dg<  
*/ 'yPKQ/y$x  
public class SelectionSort implements SortUtil.Sort { _CHzwNU  
@?<[//1  
/* e4` L8  
* (non-Javadoc) [XY%<P3D  
* n/skDx TE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x.-d)]a!  
*/ K ~mUO  
public void sort(int[] data) { kY$EK]s  
int temp; K#+?oFo:  
for (int i = 0; i < data.length; i++) { . f_ A%  
int lowIndex = i; aB6xRn9  
for (int j = data.length - 1; j > i; j--) { CIIjZ)T  
if (data[j] < data[lowIndex]) { Gt.'_hf Js  
lowIndex = j; j"nOxs  
} ;+wB!/k,  
} r+bGZ  
SortUtil.swap(data,i,lowIndex); }AS/^E  
} (1'DZ xJ&u  
} M,fL(b;2  
:rL%,o"  
} a6LL]_&g  
BI:Cm/ >  
Shell排序: gko=5|c,@  
bKpy?5&>  
package org.rut.util.algorithm.support; tkctwjD  
8Nzn%0(Q  
import org.rut.util.algorithm.SortUtil; `xzKRId0  
_uO$=4Sd  
/** \!\:p/f  
* @author treeroot KdCrI@^  
* @since 2006-2-2 (%fQhQ  
* @version 1.0 w||t3!M+n  
*/ *|=D 0  
public class ShellSort implements SortUtil.Sort{ !Axe}RD'  
tQ9%rb  
/* (non-Javadoc) zufphS|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m~&  
*/ eaFkDl  
public void sort(int[] data) { 2uEI@B  
for(int i=data.length/2;i>2;i/=2){ c6[m'cy  
for(int j=0;j insertSort(data,j,i); ,7s>#b'  
} DKS1Sm6d0  
} z}Cjk6z@  
insertSort(data,0,1); nG'Yo8I^5  
} \>5sW8P]H`  
5b:1+5iF-  
/** ^^v3iCT  
* @param data 5}G_2<G  
* @param j  [^ }$u[  
* @param i !kSemDC  
*/ 3?B1oIHQ  
private void insertSort(int[] data, int start, int inc) { =Q 9^|&6  
int temp; L~5f*LE$1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <Z-Pc?F&(k  
} QKP #wR  
} 0G8@UJv6  
} b*Qd9  
qR.FjQOvn  
} iOZ9A~Ywy  
M1eh4IVE?  
快速排序: "9xJ},:-  
)"\= _E#  
package org.rut.util.algorithm.support; _-vlN  
LhAN( [  
import org.rut.util.algorithm.SortUtil; gqv+|:#  
>c0leT  
/** ;[ QIHA!  
* @author treeroot M<Bo<,!ua  
* @since 2006-2-2 _t-6m2A  
* @version 1.0 V<WWtu;3  
*/ O h e^{:  
public class QuickSort implements SortUtil.Sort{ h.?<( I  
K-]) RIM  
/* (non-Javadoc) `pfgx^qG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bDDP:INm.  
*/ 0 @#Jz#?  
public void sort(int[] data) { #!_4ZX  
quickSort(data,0,data.length-1); t? &;   
} P>q~ocq<  
private void quickSort(int[] data,int i,int j){ C)m@/w  
int pivotIndex=(i+j)/2; #*:1Ch]B  
file://swap .~I:Hcf/  
SortUtil.swap(data,pivotIndex,j); r } Wdj  
1;m?:|6K{  
int k=partition(data,i-1,j,data[j]); |d&Kr0QIV  
SortUtil.swap(data,k,j); {KSLB8gtL  
if((k-i)>1) quickSort(data,i,k-1); ?6*\  M  
if((j-k)>1) quickSort(data,k+1,j); L__{U_p  
y=9fuGL6  
} rui 8x4c  
/** v"2A?  
* @param data KYkS ^v  
* @param i nEUH;z  
* @param j {6LS$3}VM  
* @return Z wKX$(n  
*/ iaMl>ua  
private int partition(int[] data, int l, int r,int pivot) { 0xi2VN"X  
do{ jKcl{',  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N\s-{7K  
SortUtil.swap(data,l,r); r+Sv(KS4i^  
} KKk<wya&O  
while(l SortUtil.swap(data,l,r); UH&1QV  
return l; bfb9A+]3'  
} nIOSP :'>  
9Pvv6WyKy  
} .,VLQ btg  
v\(6uej^  
改进后的快速排序: @@3 NSKA  
h+_:zWU  
package org.rut.util.algorithm.support; ~"bBwPI  
'4GN%xi  
import org.rut.util.algorithm.SortUtil; 'o= DGm2H  
/V/ )A\g  
/** q(46v`u  
* @author treeroot d8Cd4qIXX  
* @since 2006-2-2 D1ik*mDA=  
* @version 1.0 E i2M~/  
*/ Ya jAz5N  
public class ImprovedQuickSort implements SortUtil.Sort { $<VH~Q<  
\ %xku:  
private static int MAX_STACK_SIZE=4096; mDt!b6N/  
private static int THRESHOLD=10; Dm?:j9o]g  
/* (non-Javadoc) b5~p:f-&4B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E>|fbaN-%  
*/ 7#&Q-3\:  
public void sort(int[] data) { h8k\~/iJ  
int[] stack=new int[MAX_STACK_SIZE]; wqjR-$c  
CG35\b;Q  
int top=-1; %b h: c5  
int pivot; Y#P!<Q>}  
int pivotIndex,l,r; );S8`V  
Gf!c  
stack[++top]=0; h`vT[u~l  
stack[++top]=data.length-1; >CcDG  
[k%u$  
while(top>0){ XE0b9q954  
int j=stack[top--]; i}f"'KW  
int i=stack[top--];  Ew;AYZX  
[tC=P&<  
pivotIndex=(i+j)/2; t8lGC R  
pivot=data[pivotIndex]; M`9|8f,!a  
#<V5sgq S  
SortUtil.swap(data,pivotIndex,j); qx0F*EH|  
RA){\~@wC  
file://partition _$vbb#QXZG  
l=i-1; J_<6;#  
r=j; YoK )fh$  
do{ ]X X>h~0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6@:<62!;  
SortUtil.swap(data,l,r); )RWY("SUy1  
} $EdL^Q2KAy  
while(l SortUtil.swap(data,l,r); XQOM6$~,  
SortUtil.swap(data,l,j); {g4w[F!77  
<&((vrfa  
if((l-i)>THRESHOLD){ VTX6_&Hc1g  
stack[++top]=i; tQ.H/;  
stack[++top]=l-1; fCX8s(|F  
} ~?iQnQYI  
if((j-l)>THRESHOLD){ Uu Zjf9}  
stack[++top]=l+1; :S-{a  
stack[++top]=j; Z;;A#h'%e  
} w)R5@ @C*  
2P=~6(  
} d\c)cgh%  
file://new InsertSort().sort(data); ]1[:fQF7/L  
insertSort(data); P*ZMbAf.  
} * ]D{[hV  
/** >$a;+v  
* @param data X]W(  
*/ 00r7trZW^  
private void insertSort(int[] data) { v@J[qpX  
int temp; }{&;\^i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N&$ ,uhmO  
} E>r7A5Uo  
} eq<!  
} pWH,nn?w.  
p3T:Y_  
} *|@386\  
rrphOG  
归并排序: V&Rwj_Y  
z'"Y+EWN  
package org.rut.util.algorithm.support; EiZa,}A  
#veV {,g  
import org.rut.util.algorithm.SortUtil; h7o.RRhK  
Zzb?Nbf  
/** ^oW{N  
* @author treeroot h 'Hnq m  
* @since 2006-2-2 U9 mK^  
* @version 1.0 K(WKx7Kky^  
*/ N8J(RR9O  
public class MergeSort implements SortUtil.Sort{ iHvWJ<"jR  
?|\wJrM ]  
/* (non-Javadoc) P^ <to(|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~sq@^<M)s  
*/ XBO( *6"E  
public void sort(int[] data) { 7QoMroR  
int[] temp=new int[data.length]; Tb8r+~HK  
mergeSort(data,temp,0,data.length-1); +F2X2e)g"  
} !?+q7U  
P|C5k5  
private void mergeSort(int[] data,int[] temp,int l,int r){ e,W,NnCICj  
int mid=(l+r)/2; G!h75G20  
if(l==r) return ; [8 H:5 Ho  
mergeSort(data,temp,l,mid); $TK= :8HY  
mergeSort(data,temp,mid+1,r); 9b@yDq3hQ  
for(int i=l;i<=r;i++){ 3=*ur( Qy  
temp=data; #l3)3k* ;  
} Q( e  
int i1=l; @~UQU)-(  
int i2=mid+1;  _-9cGm v  
for(int cur=l;cur<=r;cur++){ -~X[j2  
if(i1==mid+1) {];-b0MS~  
data[cur]=temp[i2++]; A5%$<  
else if(i2>r) kQQDaZ 8  
data[cur]=temp[i1++]; =q`T|9v  
else if(temp[i1] data[cur]=temp[i1++]; Fmz+ Xb  
else ~-B+7  
data[cur]=temp[i2++]; Nd{U|k3pL  
} 9.il1mAKg  
} mVh;=>8K  
NK(_ &.F  
} ;oDr8a<A  
8F@Sy,D  
改进后的归并排序: DH.UJ +  
?,8+1"|$A]  
package org.rut.util.algorithm.support; x}V&v?1{5  
I3d}DpPx%  
import org.rut.util.algorithm.SortUtil; lBAu@M  
a60rJ#GD  
/** s f->8  
* @author treeroot R^ P>yk8  
* @since 2006-2-2 As`=K$^Il.  
* @version 1.0 4l6 8+  
*/ Id>4fF:o  
public class ImprovedMergeSort implements SortUtil.Sort { Ym! e}`A\F  
zNdkwj p+  
private static final int THRESHOLD = 10; j0V/\Ep)T<  
%'Q2c'r  
/* ela^L_NhF  
* (non-Javadoc) <JU3sXl  
* 85;bJfY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C H 29kQ  
*/ W I MBw mg  
public void sort(int[] data) { rDa{Ve  
int[] temp=new int[data.length]; &>E gKL  
mergeSort(data,temp,0,data.length-1); +@?'dw  
} Y:t?W  
9OW8/H&!  
private void mergeSort(int[] data, int[] temp, int l, int r) { ;l ZKgi8`  
int i, j, k; 3}F>t{FDk  
int mid = (l + r) / 2; '?L^Fa_H  
if (l == r) v^8sL` F  
return; $T^q>v2u  
if ((mid - l) >= THRESHOLD) 4gsQ:3  
mergeSort(data, temp, l, mid); kP ,8[r  
else vZ"gCf3#?3  
insertSort(data, l, mid - l + 1); qqf*g=f  
if ((r - mid) > THRESHOLD) !]82$  
mergeSort(data, temp, mid + 1, r); Rqp#-04*W  
else z+{qQ!  
insertSort(data, mid + 1, r - mid); ^MF 2Q+  
tZz%x?3G  
for (i = l; i <= mid; i++) { -OlrA{=c_  
temp = data; -P/DmSS8V  
} 9&AO  
for (j = 1; j <= r - mid; j++) { )`f-qTe  
temp[r - j + 1] = data[j + mid]; aaT3-][  
} W/>a 1  
int a = temp[l]; to</  
int b = temp[r]; ]0ErT9  
for (i = l, j = r, k = l; k <= r; k++) { _#:7S sJ  
if (a < b) { PENB5+1OK  
data[k] = temp[i++]; Sq ]gU  
a = temp; jgIG";:Q  
} else { cOX)+53  
data[k] = temp[j--]; 4A6Y \ZXI  
b = temp[j]; 8T T#b?d  
} Pg(Y}Tu  
} d\]KG(T  
} PR:B6 F8  
v7wyQx+Q  
/** =CK%Zo  
* @param data }%/mPbd#  
* @param l ~rdS#f&R2  
* @param i aO&{.DO2  
*/ W6NhJ#M7  
private void insertSort(int[] data, int start, int len) { _Fa\y ZX  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y 2> 93m  
} bXF8V  
} >B**fZ~L  
} |kPgXq6  
} Q!@M/@-Ky  
B]G2P`sN  
堆排序: `+n#CWZ"Y  
M1-tRF  
package org.rut.util.algorithm.support; xz!0BG  
7CH&n4v  
import org.rut.util.algorithm.SortUtil; %"Um8`]FVg  
e&VC }%m  
/** =|1_6.tz  
* @author treeroot ^7aqe*|vm  
* @since 2006-2-2 z.-yL,Rc`-  
* @version 1.0 xn2nh@;  
*/ it\$Pih]  
public class HeapSort implements SortUtil.Sort{ =M;F&;\8  
?m]vk|>  
/* (non-Javadoc) Az:~|P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lOVcXAe}  
*/ @iuX~QA[9  
public void sort(int[] data) { 6I"KomJ9  
MaxHeap h=new MaxHeap(); QvZ"{  
h.init(data); ';FJs&=I  
for(int i=0;i h.remove(); lu"0\}7X  
System.arraycopy(h.queue,1,data,0,data.length); #wIWh^^ Zy  
} -z`FKej   
U| Fqna  
private static class MaxHeap{ md+pS"8o;  
G]rY1f0  
void init(int[] data){ +=E\sEe  
this.queue=new int[data.length+1]; 5`p9Xo>)yW  
for(int i=0;i queue[++size]=data; >va_,Y}  
fixUp(size); ,@f"WrQ  
} C;m"W5+  
} Qpmq@iL  
0QZT<Zs  
private int size=0; <7 U~0@<Y  
"ZGP,=?y2  
private int[] queue; 8C*@d_=q  
USyc D`  
public int get() { JGHj(0j  
return queue[1]; *xNc^ &.  
} ;9z|rWsF  
?3BcjD0  
public void remove() { 9{;L7`<  
SortUtil.swap(queue,1,size--); ASbI c"S6  
fixDown(1);  6a,8t  
} >IaGa!4  
file://fixdown pL{oVk#,  
private void fixDown(int k) { aNu.4c/5  
int j; *`+zf7-f  
while ((j = k << 1) <= size) { p($vM^_<"  
if (j < size %26amp;%26amp; queue[j] j++; nvrh7l9nX  
if (queue[k]>queue[j]) file://不用交换 jyIIE7.I"  
break; mh}D[K=~%  
SortUtil.swap(queue,j,k); &q<k0_5Q  
k = j; A^z{n/DiL  
} N0S^{j,i  
} _" 9 q(1  
private void fixUp(int k) { l0,VN,$Yl  
while (k > 1) { ^~V2xCu!  
int j = k >> 1; bI ;I<Qa  
if (queue[j]>queue[k]) Nt $4;  
break; <w^u^)iLy1  
SortUtil.swap(queue,j,k); ExtC\(X;  
k = j; GrG'G(NQ  
} +45SKu=  
} 4:rwzRDY  
i+O7,"(@  
} .*` ^dt  
![B|Nxq}@  
} Xsa8YP9  
'EIe5O p  
SortUtil: b_TI_  
f\oW<2k]~  
package org.rut.util.algorithm; } TUr96  
&7\}S qp  
import org.rut.util.algorithm.support.BubbleSort; F6sQeU  
import org.rut.util.algorithm.support.HeapSort; KE,.Evyu=  
import org.rut.util.algorithm.support.ImprovedMergeSort; =i  vlS  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;&=jSgr8  
import org.rut.util.algorithm.support.InsertSort; =%~- M  
import org.rut.util.algorithm.support.MergeSort; K[iAN;QCe%  
import org.rut.util.algorithm.support.QuickSort; `\VtTS  
import org.rut.util.algorithm.support.SelectionSort; gamB]FPZ  
import org.rut.util.algorithm.support.ShellSort; A2gFY}  
m OUO)[6y  
/** P+f}r^4}  
* @author treeroot Mbxl{M >  
* @since 2006-2-2 GwF8ze+cH  
* @version 1.0 8i[TeW"  
*/ *l`yxz@U  
public class SortUtil { `_cv& "K9f  
public final static int INSERT = 1; yQ/O[(  
public final static int BUBBLE = 2; \r:*`Z*y  
public final static int SELECTION = 3; &UH0Tw4   
public final static int SHELL = 4; ?S& yF  
public final static int QUICK = 5; J#C4A]A  
public final static int IMPROVED_QUICK = 6; +#wVe  
public final static int MERGE = 7; _}[WX[Le{  
public final static int IMPROVED_MERGE = 8; AsE77AUA  
public final static int HEAP = 9; r1 :TM|5L  
<6-73LsHcP  
public static void sort(int[] data) { Z]uc *Ed  
sort(data, IMPROVED_QUICK); {,5 .svO  
} R5e[cC8o.  
private static String[] name={ l/(~Kf9eQG  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;N.dzH2yA  
}; ggPGKY-b=  
4RDY_HgF6  
private static Sort[] impl=new Sort[]{ *-=/"m  
new InsertSort(), &Y1h=,KR9  
new BubbleSort(), f 4pIF"U9>  
new SelectionSort(), g8E5"jpXx3  
new ShellSort(), a^LckHPI>  
new QuickSort(), ZB1%Kn#zo4  
new ImprovedQuickSort(), MD$W;rk(Hn  
new MergeSort(), Vf:.C|Z  
new ImprovedMergeSort(), pmBN?<  
new HeapSort() w!<e#Z]3b  
}; !x-__[#  
3M?O(oO  
public static String toString(int algorithm){ %1p-DX6  
return name[algorithm-1]; %Y0lMNP  
} 7Ku&Q<mi  
1v:Ql\^cT  
public static void sort(int[] data, int algorithm) { 4I&(>9 @z<  
impl[algorithm-1].sort(data); rNhS\1-  
} rF[-4t %  
c*\i%I#f2  
public static interface Sort { j7E;\AZ^  
public void sort(int[] data); vKW!;U9~P  
} OMk3\FV2Z  
8Y8bFWuc  
public static void swap(int[] data, int i, int j) { rr,A Vw  
int temp = data; ;/V])4=  
data = data[j]; #Ev}Gf+5Q  
data[j] = temp; #@-dT,t  
} .0yBI=QI  
} [L-wAk:Fb  
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