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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。 -!7Z  
插入排序: 8*b{8%<K  
d`V.i6u  
package org.rut.util.algorithm.support; MXl_{8  
fCNQUK{Gs5  
import org.rut.util.algorithm.SortUtil; e}{#VB<  
/** xPm{'J+b~  
* @author treeroot }XUI1H]jk  
* @since 2006-2-2 e^@ZN9qQ  
* @version 1.0 s% R,]q  
*/ M1/(Xla3  
public class InsertSort implements SortUtil.Sort{ 'C7R* P  
aO}hE 2]  
/* (non-Javadoc) xC9?rLUZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O{ 3X`xAf  
*/ ]Kjt@F";  
public void sort(int[] data) { 8dx 7@y?z  
int temp; 7wWx8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5V(#nz  
} dKEy6C"@  
} <f:(nGj  
} -J 6`  
|PYyhY  
} 6`'g ${U  
Q'^'G>MBJ  
冒泡排序: )d3C1Pd>  
q0ab]g+  
package org.rut.util.algorithm.support; cyd&bxPgj+  
0@{bpc rc  
import org.rut.util.algorithm.SortUtil; k1g-%DB  
4w9=z,  
/** d5LBL'/o  
* @author treeroot ,f)+|?wz  
* @since 2006-2-2 X6B,Mply  
* @version 1.0 ]vR Ol.  
*/ ex~"M&^  
public class BubbleSort implements SortUtil.Sort{ U:7w8$_  
F> Ika=z,  
/* (non-Javadoc) KY< $+/B!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xv147"w'v  
*/ p)Q5fh0-  
public void sort(int[] data) { '-f` 5X  
int temp; _&gO>G,uy  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {I0!q"sF  
if(data[j] SortUtil.swap(data,j,j-1); &.2% p  
} 5G'2 Wby'#  
} =ePwGm1:c  
} >mvE[iXRG?  
} -@w}}BR  
Cz5U  
} KRd'!bG=1  
gI RZkT`  
选择排序: 4@F8-V3q4  
]==7P;_-  
package org.rut.util.algorithm.support; K ~-V([tWg  
2 7dS.6  
import org.rut.util.algorithm.SortUtil; $aT '~|?  
& \5Ur^t  
/** )L "Dt_t  
* @author treeroot >_]Ov:5  
* @since 2006-2-2 # ^,8JRA  
* @version 1.0 /8:e| ]  
*/ 9+ve0P7$  
public class SelectionSort implements SortUtil.Sort { Sa)L=5Nr  
P^Og(F8;  
/* B/Q>i'e  
* (non-Javadoc) e$ QMR.'  
* _(=g[=Mer  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H9BqE+  
*/ t vW0 W  
public void sort(int[] data) { \jZmu  
int temp; p[|V7K'Z  
for (int i = 0; i < data.length; i++) { BUi,+NdIk  
int lowIndex = i; Cv>~%<   
for (int j = data.length - 1; j > i; j--) { h0 %M+g  
if (data[j] < data[lowIndex]) { #NMQN*J>D  
lowIndex = j; }YC=q  
} X}={:T+6s  
} `;R$Ji=>  
SortUtil.swap(data,i,lowIndex); I%[Tosud<  
} w0=/V[fs  
} \zA3H$Df~  
Fm&f  
} '>bn94$  
=*-a c  
Shell排序: GM^H )8U  
!3c+}j-j  
package org.rut.util.algorithm.support; .;bU["fn)  
,B x0  
import org.rut.util.algorithm.SortUtil; =b)!l9TX  
(yEU9R$I"  
/** 71<4q {n  
* @author treeroot tmoclK-  
* @since 2006-2-2 ?a, `{1m0\  
* @version 1.0 xjxX4_  
*/ Om7 '_}  
public class ShellSort implements SortUtil.Sort{ MdkL_YP}.  
\q!TI x  
/* (non-Javadoc) WqCER^~'>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nC$ c.K'  
*/ D&N3LH  
public void sort(int[] data) { vgNrHq&2q  
for(int i=data.length/2;i>2;i/=2){ h^WMv *2  
for(int j=0;j insertSort(data,j,i); & R<K>i  
} HDE5Mg "  
} ]d|M@v~c4  
insertSort(data,0,1); hf)R PG&  
} N/2WUp  
#{)mr [c|  
/** -0CL#RzKR  
* @param data o {q8An)  
* @param j WwKpZ67$R  
* @param i 3-0jxx(  
*/ n0':6*oGW  
private void insertSort(int[] data, int start, int inc) { : IsJE6r  
int temp; $b_~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U+ D#  
} V+|$H h8  
} >N~jlr|  
} pZc`!f"  
PCBV6Y7r  
} - ikq#L){  
:de4Fje/4y  
快速排序: WdJeh:h  
?WS.RBe2  
package org.rut.util.algorithm.support; [>Zg6q|  
JV2[jo}0 N  
import org.rut.util.algorithm.SortUtil; PI *Z>VE?  
>k}Kf1I  
/** }g2l ni  
* @author treeroot tM:$H6m/(  
* @since 2006-2-2 S =sL:FC  
* @version 1.0 ZM=eiJZ  
*/ v,3 }YDu  
public class QuickSort implements SortUtil.Sort{ oO;< $wx2t  
pBu}c<  
/* (non-Javadoc) ~dsx|G?p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s2+_`Ogg  
*/ -HFyNk]>  
public void sort(int[] data) { ]jmZ5h#[  
quickSort(data,0,data.length-1); Sn;q:e3i{A  
} 5RSP.Vyx{  
private void quickSort(int[] data,int i,int j){ p5nrPL  
int pivotIndex=(i+j)/2; sY}0PB  
file://swap dr"@2=Z  
SortUtil.swap(data,pivotIndex,j); D_w<igu!3  
`V[ hE r|  
int k=partition(data,i-1,j,data[j]); q^[SN  
SortUtil.swap(data,k,j); THwq~c'  
if((k-i)>1) quickSort(data,i,k-1); PXDJ[Oj7(0  
if((j-k)>1) quickSort(data,k+1,j); Qeq=4Nq  
RHt~:D3*  
} FlH=Pqc  
/** T(kG"dz   
* @param data p|)j{nc  
* @param i ;Q lb].td  
* @param j ) d=&X|S>  
* @return Ao *{#z   
*/ 'GZ,  
private int partition(int[] data, int l, int r,int pivot) { E3_ 5~>  
do{ 3-![% u  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ab_EH}j1\q  
SortUtil.swap(data,l,r); o-AAx#@  
} )Z`OkkabnD  
while(l SortUtil.swap(data,l,r); Aacj?   
return l; lI[O!Vu Kc  
} vrsOA@ee3H  
pD6a+B\;k  
} '&y+,2?;Y[  
Y;sN UX  
改进后的快速排序: ,fs>+]UY3  
\mwxV!!b$  
package org.rut.util.algorithm.support; M[=sQnnSFW  
G^\.xk]  
import org.rut.util.algorithm.SortUtil; g$Ns u:L  
;q2e[y  
/** z-kB!~r  
* @author treeroot !wjD6 NK  
* @since 2006-2-2 rf2-owWN  
* @version 1.0 4?7OP t6  
*/ $0;Dk,  
public class ImprovedQuickSort implements SortUtil.Sort { 1FRpcE  
e]l.m!,r  
private static int MAX_STACK_SIZE=4096; {y>Kcfc/?E  
private static int THRESHOLD=10; Biy$p6  
/* (non-Javadoc) `lE8dwL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1uc;:N G=  
*/ @ |7e~U  
public void sort(int[] data) { S#Pni}JD  
int[] stack=new int[MAX_STACK_SIZE]; !2=eau^p  
.iEzEmu  
int top=-1; |w`Q$ c  
int pivot; tp+H]H3  
int pivotIndex,l,r; E njSio0  
</h}2x  
stack[++top]=0; z Q11dLjs  
stack[++top]=data.length-1; +q~dS.  
H:L<gv(rG  
while(top>0){ =q*j". <  
int j=stack[top--]; ^:m7Qd?Z[  
int i=stack[top--]; \;Q:a /ur9  
G~\=:d=^,`  
pivotIndex=(i+j)/2; (fnp\j3w  
pivot=data[pivotIndex]; f.u+({"ql  
^ Hv4t   
SortUtil.swap(data,pivotIndex,j); m[?gN&%nc  
kT{d pGU9  
file://partition f!##R-A  
l=i-1; G(7WUMjl  
r=j; 9GVv[/NAb  
do{ q*K.e5"'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); o[K,(  
SortUtil.swap(data,l,r); |1"n\4$  
} {o.i\"x;  
while(l SortUtil.swap(data,l,r); +# tmsv]2  
SortUtil.swap(data,l,j); >[gNQJ6  
Q|:qs\6q5  
if((l-i)>THRESHOLD){ Ba]^0Y u  
stack[++top]=i; [5Pin>]z  
stack[++top]=l-1; R9lb<`  
} Z\*jt B:  
if((j-l)>THRESHOLD){ c{K[bppJ*  
stack[++top]=l+1; $<s 3;>t  
stack[++top]=j; %C(^v)"  
} [cf!%3>53  
I> z0)pB  
} i6D66E  
file://new InsertSort().sort(data); 5KDN8pJN  
insertSort(data); "\M^jO  
} K)r|oW=6Y  
/** p v*n.U6  
* @param data $n@B:kv5p  
*/ InR/g@n+D1  
private void insertSort(int[] data) { "E )0)A3=  
int temp; JQ]A"xTIa*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WkR=(dss8  
} )Fh5*UC  
} H)O I&?  
} yMbg1+:   
,[<+7  
} @a}jnl(2  
n|f Huv  
归并排序: +yo1&b R/  
E(G&mfhb  
package org.rut.util.algorithm.support; $fl+l5?9  
M[7$cfp-Y~  
import org.rut.util.algorithm.SortUtil; _mn2bc9M  
?_b zg'  
/** V`XtGTx  
* @author treeroot +LsACSB  
* @since 2006-2-2 w [7vxQ!-  
* @version 1.0 {pyTiz#JY  
*/ &x<y4ORH|  
public class MergeSort implements SortUtil.Sort{ &F#K=R| .j  
%T'<vw0  
/* (non-Javadoc) 6E@qZvQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &a bR}J[  
*/ 79O'S du@  
public void sort(int[] data) { VgyY7INx9  
int[] temp=new int[data.length]; _Kf8,|+  
mergeSort(data,temp,0,data.length-1); v)J(@>CZ[  
} V+&C_PyC  
~V6wcXd  
private void mergeSort(int[] data,int[] temp,int l,int r){ |QB[f*y5  
int mid=(l+r)/2; !U8n=A#,-  
if(l==r) return ; >crFIkOJ  
mergeSort(data,temp,l,mid); 24Uvi:B?~  
mergeSort(data,temp,mid+1,r); 5|0}   
for(int i=l;i<=r;i++){ X{G&r$  
temp=data; #1oyRD-  
} y$C\b\hM  
int i1=l; ErXzKf  
int i2=mid+1; r>ca17  
for(int cur=l;cur<=r;cur++){ -oR P ZtW  
if(i1==mid+1) R /0zB  
data[cur]=temp[i2++]; k~=_]sLn  
else if(i2>r) *'jI>^o  
data[cur]=temp[i1++]; Ty;P`Uv]r  
else if(temp[i1] data[cur]=temp[i1++]; Ne9S90HsB6  
else G  Ps//  
data[cur]=temp[i2++]; pDV8B/{  
} A{Dy3tm=  
} /@QPJ~%8Ud  
@pkQ2OM 2  
} N(=Z4Nk5  
ap|$8 G  
改进后的归并排序: %UokR"  
1E]TH/JK  
package org.rut.util.algorithm.support; @\s*f7  
S5>?j n1  
import org.rut.util.algorithm.SortUtil; 7/b\NLeJ'  
)LDBvpJyQ  
/** ee\QK,QV  
* @author treeroot #$0*Gd-N  
* @since 2006-2-2 !}PZCbDhL  
* @version 1.0 {7Q)2NC  
*/ b:t|9 FE%  
public class ImprovedMergeSort implements SortUtil.Sort { tqXr6+!Q  
fobnK~2  
private static final int THRESHOLD = 10; @Tz}y"VG  
%v)O!HC}  
/* h1REL^!c  
* (non-Javadoc) -fCR^`UOS  
* ^e\H V4s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) o`ep{<t  
*/ g`\5!R1  
public void sort(int[] data) { `b?o%5V2x  
int[] temp=new int[data.length]; :^H2D=z@  
mergeSort(data,temp,0,data.length-1); [2\jQv\Y  
} 5DxNHEuS  
#bCQEhCy  
private void mergeSort(int[] data, int[] temp, int l, int r) { 6%L#FSI  
int i, j, k; 4U>g0  
int mid = (l + r) / 2; ^bk:g}o  
if (l == r) l#bE_PD;  
return; BHNEP |=  
if ((mid - l) >= THRESHOLD) MmQ"z_v  
mergeSort(data, temp, l, mid); 7 F> a&r  
else T7R,6 qt  
insertSort(data, l, mid - l + 1); r%\%tz'`j  
if ((r - mid) > THRESHOLD) %i5tf;x6i  
mergeSort(data, temp, mid + 1, r); '@dk3:3t  
else >yf}9Zs  
insertSort(data, mid + 1, r - mid); e82xBLxR%  
x,M8NTb*  
for (i = l; i <= mid; i++) { TY;%nT  
temp = data; 7 >-(g+NF!  
} W:8pmI  
for (j = 1; j <= r - mid; j++) { Kw=][}d`D  
temp[r - j + 1] = data[j + mid]; )}lO%B'K  
} i62GZe E  
int a = temp[l]; PvB{@82  
int b = temp[r]; +; / s0  
for (i = l, j = r, k = l; k <= r; k++) { 8/T[dn  
if (a < b) { hg2UZ% Y  
data[k] = temp[i++]; 10IX8 4  
a = temp; !xvAy3  
} else { zmhL[1qj  
data[k] = temp[j--]; F4PWL|1  
b = temp[j]; t Z@OAPRx  
} {4eI} p<  
} {H3B1*Dk  
} Pl\NzB,`  
Ruv`yfQ  
/** )~-r&Q5d  
* @param data O-&^;]ieJ  
* @param l z-N N( G+  
* @param i >!MRk[@ V-  
*/ xSrjN  
private void insertSort(int[] data, int start, int len) { (;9j#x  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); hip't@.uE  
} %l[]n;*$  
} sA2esA@C<o  
} wC?>,LOl  
} uj:1_&g  
-% \LW1  
堆排序: 0K4A0s_R`  
^h!}jvqE  
package org.rut.util.algorithm.support; 4Z.Dz@.c(  
aGNb  Cm  
import org.rut.util.algorithm.SortUtil; *$Y_ %}  
xX.kKEo"d  
/** '*D>/hn|:]  
* @author treeroot hc*tQ2  
* @since 2006-2-2 pi5DDK  
* @version 1.0 5,J.$Sax  
*/ L)c]i'WZ  
public class HeapSort implements SortUtil.Sort{ @,m 7%,  
W`uq,r0Xsy  
/* (non-Javadoc) P'^& SK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dU-nE5  
*/ zX]l$Q+  
public void sort(int[] data) { .d6b ?t  
MaxHeap h=new MaxHeap(); fJ=v?  
h.init(data); QXW> }GdKZ  
for(int i=0;i h.remove(); OwPXQ 3S  
System.arraycopy(h.queue,1,data,0,data.length); Jl<pWjkZZ  
} P*n/qj8h  
o8Yq3N+  
private static class MaxHeap{ G > t  
1zgM$p  
void init(int[] data){ ;3XOk+  
this.queue=new int[data.length+1]; 6)c-s|#  
for(int i=0;i queue[++size]=data; re4A5Ev$  
fixUp(size); $18?Q+?3  
} \5}*;O@  
} _2hZGC%&E  
@z^7*#vQv  
private int size=0; ~G1B}c]  
KL./  
private int[] queue; (8~D ^N6Z  
>qBJK)LHOv  
public int get() { ZW4$Ks2]Y  
return queue[1]; h>F"GR?U_(  
} q4v:s   
Rg^ps  
public void remove() { ;iW>i8  
SortUtil.swap(queue,1,size--); M%WO  
fixDown(1); j2%fAs<  
} @}2EEo#  
file://fixdown WL?qulC}h1  
private void fixDown(int k) { }0?XF/e(R  
int j; Shv$"x:W  
while ((j = k << 1) <= size) { OZA^L;#>  
if (j < size %26amp;%26amp; queue[j] j++; Ww"]3  
if (queue[k]>queue[j]) file://不用交换 qeb}~FL"o  
break; C-\3,  
SortUtil.swap(queue,j,k); xIwILY|W=  
k = j; O`5hj q#  
} \ AIFIy  
} h^ K]ASj  
private void fixUp(int k) { [N#4H3GM8  
while (k > 1) { Km,%p@`m  
int j = k >> 1; q0DRT4K  
if (queue[j]>queue[k]) [RY Rt/?Q  
break; J=&}$  
SortUtil.swap(queue,j,k); |*DkriYY  
k = j; -{q'Tmst  
} upZ tVdd  
} U1(cBY  
v!$:t<-5N  
} mT #A?C2  
E]}_hZU  
} t1G__5wp  
pXvys] @  
SortUtil: nSRNd A  
|o+*Iy)  
package org.rut.util.algorithm; b 0qA  
2j#Dwa(lZQ  
import org.rut.util.algorithm.support.BubbleSort; U#&+n-npO  
import org.rut.util.algorithm.support.HeapSort; pRzL}-[/v  
import org.rut.util.algorithm.support.ImprovedMergeSort; nM ?Nf}  
import org.rut.util.algorithm.support.ImprovedQuickSort; Lz!JLiMEET  
import org.rut.util.algorithm.support.InsertSort; @|5B}%!  
import org.rut.util.algorithm.support.MergeSort; ioEjbqD<  
import org.rut.util.algorithm.support.QuickSort; ?^2nrh,n+  
import org.rut.util.algorithm.support.SelectionSort; &er,Wyc(  
import org.rut.util.algorithm.support.ShellSort; Y`(~eNX^%  
97qf3^gGd  
/** BMqr YW  
* @author treeroot 7t1as.  
* @since 2006-2-2 /]U;7)  
* @version 1.0 (G/(w%#7_  
*/ R>]7l!3^1  
public class SortUtil { z~==7:Os  
public final static int INSERT = 1; D/JSIDd  
public final static int BUBBLE = 2; }+Q4s]  
public final static int SELECTION = 3; b^&azUkMN  
public final static int SHELL = 4; C"$~w3A k  
public final static int QUICK = 5; *l;S"}b*,_  
public final static int IMPROVED_QUICK = 6; JU.!<  
public final static int MERGE = 7; $ 7W5smW/  
public final static int IMPROVED_MERGE = 8; [$pb  
public final static int HEAP = 9; jD%|@ux  
|>[qC O  
public static void sort(int[] data) { CyS %11L  
sort(data, IMPROVED_QUICK); lHDZfwJ&C1  
} K&zW+C b  
private static String[] name={ 8};kNW^2m  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" KVr9kcs  
}; U{/fY/kq  
l~w^I|M^C  
private static Sort[] impl=new Sort[]{ seRf q&  
new InsertSort(), /.=aA~|  
new BubbleSort(), CBF<53TshR  
new SelectionSort(), lSlZ^.&  
new ShellSort(), QnP?j&  
new QuickSort(), G+Bk!o  
new ImprovedQuickSort(), znSlSQpTv  
new MergeSort(), I$p1^8~L  
new ImprovedMergeSort(), <QO1Yg7}  
new HeapSort() 0kNKt(_  
}; REYvFx?i  
;obOr~Jx'5  
public static String toString(int algorithm){ d7mn(= &  
return name[algorithm-1]; }2;iIw`  
} ?qi~8.<w  
#"lb9. _ M  
public static void sort(int[] data, int algorithm) { /!^,+  
impl[algorithm-1].sort(data); !>D[Y  
} UCK;?]  
|Olz h63k:  
public static interface Sort { `/'p1?Z"  
public void sort(int[] data); _ E-\aS{  
} =.&8ghJ*M  
K *{RGE  
public static void swap(int[] data, int i, int j) { I>JE\## ^n  
int temp = data; rsLkH&aM  
data = data[j]; PH%'^YAl7  
data[j] = temp; MG~Z)+g=y  
} Rd5-ao4  
} EI7n|X a1q  
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