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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。 9p 4"r^  
插入排序: ky>wOaTmN6  
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package org.rut.util.algorithm.support; a</D_66  
'tN25$=V&W  
import org.rut.util.algorithm.SortUtil; !@u>A_  
/** C^t(^9  
* @author treeroot 2;L|y._`w  
* @since 2006-2-2 iFSJL,QZ3  
* @version 1.0 3:"]Rn([P  
*/ eMOD;{Q?X  
public class InsertSort implements SortUtil.Sort{ <";,GaZQ  
"I;C;}!  
/* (non-Javadoc) wn Y$fT9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ej&<GM|  
*/ pqvOJ#?Q}=  
public void sort(int[] data) { 8$|8`;I(  
int temp; |W$DVRA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4fh^[\  
} M)?dEgU}M  
} `=#01YX[0  
} oMcK`%ydm  
*KK+X07  
} JJV0R}z?TV  
IUGz =%[  
冒泡排序: K\[!SXg@  
C0.'_  
package org.rut.util.algorithm.support; )oo~m\`  
 g]*  
import org.rut.util.algorithm.SortUtil; v]2S`ffP  
ZaFb*XRgS  
/** STfyCtS  
* @author treeroot qP!eJ6[Nh"  
* @since 2006-2-2 Xqp|VbDca  
* @version 1.0 >idBS  
*/ Bhp OXqg  
public class BubbleSort implements SortUtil.Sort{ D0Z\Vvy  
6nDV1O5  
/* (non-Javadoc) O <9~Kgd8h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F} J-gZl  
*/ 7Y=cn_ wU  
public void sort(int[] data) { B bhfG64  
int temp; a\kb^D=T  
for(int i=0;i for(int j=data.length-1;j>i;j--){ C7T(+Wd!,  
if(data[j] SortUtil.swap(data,j,j-1); `T/~.`R  
} M|T4~Q U&  
} TAL/a*7\  
} DG(7|`(aY  
} y<W8Q<9  
Vi! Q  
} k'`m97B  
Q_*_?yf  
选择排序: *, Ld/O;s  
zHB_{(o7  
package org.rut.util.algorithm.support; ocwG7J\W  
q^8EOAvnZ  
import org.rut.util.algorithm.SortUtil; I^*'.z!4Q  
78n}rT%k1  
/** !yjo   
* @author treeroot 71FeDpe  
* @since 2006-2-2 RKd  
* @version 1.0 Zr$d20M2A;  
*/ D|I Ec?  
public class SelectionSort implements SortUtil.Sort { >QQ(m\a$  
(J$\-a7<f  
/* ,lY aA5&I  
* (non-Javadoc) RR1A65B  
* dtM[E`PL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1F[L"W;r  
*/ OL59e %X  
public void sort(int[] data) { h4&;?T S  
int temp; ~ <0Z>qr  
for (int i = 0; i < data.length; i++) { !Gs} tiMH  
int lowIndex = i; CF y}r(q  
for (int j = data.length - 1; j > i; j--) { fT:}Lj\L1  
if (data[j] < data[lowIndex]) { xtV[p4U  
lowIndex = j; yT OyDm-  
} }6RT,O g  
} }m]q}r  
SortUtil.swap(data,i,lowIndex); ZU'!iU|8  
} 4C_c\;d  
} t *6loS0+  
,a|@d} U  
} iMP  
:LJ7ru2  
Shell排序: <~Q i67I  
MKGS`X]<J  
package org.rut.util.algorithm.support;  ~m=EM;  
4|J[Jdj  
import org.rut.util.algorithm.SortUtil; $Ptk|qFe  
'E;W  
/** l?N`{ ,1^  
* @author treeroot O>r-]0DI[  
* @since 2006-2-2 ( `' 8Ww  
* @version 1.0 u/^|XOy  
*/ V}8$p8#<@  
public class ShellSort implements SortUtil.Sort{ s PYX~G&T  
D=?{8'R'  
/* (non-Javadoc) =6nD0i 9+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I %_MV  
*/ *DeTqO65  
public void sort(int[] data) {  <dR,'  
for(int i=data.length/2;i>2;i/=2){ R|,7d:k  
for(int j=0;j insertSort(data,j,i); =WZ%H_oxi  
} 7| YrdK<  
} MOz}Q1`a  
insertSort(data,0,1); c,5n, i  
} i S p  
)na&" bJ  
/** D!> d0k,Y  
* @param data 97~K!'/^+y  
* @param j +H'\3^C-  
* @param i Eek9|i"p  
*/ y%(X+E"n*  
private void insertSort(int[] data, int start, int inc) { [$\>~nj=  
int temp; gp  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -e`;bX_N)  
} `7Ug/R<  
} /)#8)"`nT  
} :X>DkRP  
BA+_C]%ZJ  
} # mT]j""  
1M5 -pZ[D  
快速排序: 1 p\Ak  
hw,^G5m  
package org.rut.util.algorithm.support; +uQB rG  
X-Ycz 5?  
import org.rut.util.algorithm.SortUtil; H~9=&p[Q  
%`\]Y']R  
/** `F1dyf!p<  
* @author treeroot V/y=6wUiSl  
* @since 2006-2-2 D1"7s,Hmu  
* @version 1.0 M []OHw  
*/ }B)jq`a?|\  
public class QuickSort implements SortUtil.Sort{ =MSu3<y,  
#ooc)),  
/* (non-Javadoc) F$Pp]"82'm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kV)' a  
*/ n(&*kfk  
public void sort(int[] data) { :,F=w0O  
quickSort(data,0,data.length-1); rihlae5Kz  
} olty4kGD$V  
private void quickSort(int[] data,int i,int j){ {'~sS  
int pivotIndex=(i+j)/2; @>O&Cpt  
file://swap \iZ1W  
SortUtil.swap(data,pivotIndex,j); 6E+=Xi  
Dd/}Ya(Gi  
int k=partition(data,i-1,j,data[j]); !<Z{@7oH  
SortUtil.swap(data,k,j); `"Dy%&U  
if((k-i)>1) quickSort(data,i,k-1); _T~H[&Hl  
if((j-k)>1) quickSort(data,k+1,j); 3?ba 1F0Nw  
i$O#%12l  
} JuJ5qIal  
/** `Cj,HI_/*  
* @param data 37>MJ  
* @param i lIq~~cv)  
* @param j 7Po/_%  
* @return . bG{T|  
*/ A?Sm-#n{  
private int partition(int[] data, int l, int r,int pivot) { T46{*(  
do{ iEhDaC[e(b  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d| \#?W&  
SortUtil.swap(data,l,r); ? ).(fP  
} '3%*U*I  
while(l SortUtil.swap(data,l,r); lIl9ypikg  
return l; r5)f82pQ  
} m|dF 30~A  
GTFl}t  
} \>[gl!B_Rr  
zjWyGt(Q  
改进后的快速排序: }}s) +d  
YHh u^}|jQ  
package org.rut.util.algorithm.support; r %xB8e9  
Ph\F'xROe  
import org.rut.util.algorithm.SortUtil; m t.,4  
riEqW}{  
/** Ja=N@&Z#  
* @author treeroot h>Rpb#]  
* @since 2006-2-2 MZi8Fo'  
* @version 1.0 9jjL9f_3  
*/ hGKdGu`0  
public class ImprovedQuickSort implements SortUtil.Sort { | VRq$^g  
qid1b b  
private static int MAX_STACK_SIZE=4096; ke</x+\F  
private static int THRESHOLD=10; 4+,*sn  
/* (non-Javadoc) -(  ER4#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  RA~_]Hk  
*/ c=<v.J@K  
public void sort(int[] data) { | &\^n2`>  
int[] stack=new int[MAX_STACK_SIZE]; ,,2_/u\"/i  
oG9SO^v_  
int top=-1; v_.j/2U  
int pivot; .=aMjrME  
int pivotIndex,l,r; &:,fb]p  
,XP@ pi  
stack[++top]=0; *Ag,kW"  
stack[++top]=data.length-1; n]Ebwznt-  
`}n0=E  
while(top>0){ th;]Vo  
int j=stack[top--]; xKisL=l6Y  
int i=stack[top--]; J2x$uO{Bn  
CTh1;U20  
pivotIndex=(i+j)/2; 6UtG-WHHt  
pivot=data[pivotIndex]; _c,&\ wl$  
?##y`.+O  
SortUtil.swap(data,pivotIndex,j); aGe\.A=  
*+# k{D,  
file://partition 13]y)(  
l=i-1; *,_2hvlz  
r=j; (jt*u (C&Y  
do{ ec,z6v^9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !vi4* @:  
SortUtil.swap(data,l,r);  &s_}u%iC  
} .|tQ=l@I  
while(l SortUtil.swap(data,l,r); ZlUFJ*pk  
SortUtil.swap(data,l,j); m}sh I8S  
;%lJD"yF  
if((l-i)>THRESHOLD){ 047*gn.b  
stack[++top]=i; ` C/fF_YA  
stack[++top]=l-1; O{O 9}]6  
} y;*My#  
if((j-l)>THRESHOLD){ ggzAU6J  
stack[++top]=l+1; !G@V<'F  
stack[++top]=j; thR|h+B  
} 1"N/ZKF-x  
F12S(5Z0%  
} B&to&|jf  
file://new InsertSort().sort(data); 4j2~"K  
insertSort(data); #zh6=.,7  
} 4d,qXSKty  
/** =/)Mc@Hb  
* @param data N2M?5fF  
*/ Z{j!s6Y@{  
private void insertSort(int[] data) { vWZ>Hf]`L  
int temp; F^J&g%ql  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z0FR33-  
} 8JFnB(3xU  
} "@F*$JGT y  
} f4qS OVv  
gt(X!iN]  
} ) >-D={  
LD7? .  
归并排序: AqTR.}H  
hA$c.jJr.Z  
package org.rut.util.algorithm.support; HQ jxJd5P  
_%C_uBLi  
import org.rut.util.algorithm.SortUtil; Ej9/_0lt  
je$R\7B<  
/** S S7D1  
* @author treeroot _Y:Ja0,  
* @since 2006-2-2 KR+aY.  
* @version 1.0 fbW,0  
*/ 5+#?7J1  
public class MergeSort implements SortUtil.Sort{ 8tG/VE[  
S.?\>iH[  
/* (non-Javadoc) Il tg0`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !]UU;8h~  
*/ ^$T!@ +:  
public void sort(int[] data) { M,=@|U/B  
int[] temp=new int[data.length]; U[H+87zg  
mergeSort(data,temp,0,data.length-1); xP|%rl4  
} `t/@ L:  
j.G.Mx"  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^+Y-=2u:  
int mid=(l+r)/2; UGezo3}  
if(l==r) return ; h<!khWFS  
mergeSort(data,temp,l,mid); RLeSA\di  
mergeSort(data,temp,mid+1,r); ;Fwm1ezx0  
for(int i=l;i<=r;i++){ e{#a{`?Uez  
temp=data; ,AFC1t[0  
} NC[GtAPD3  
int i1=l; 0YTtA]|`4  
int i2=mid+1; W6!4Qyn  
for(int cur=l;cur<=r;cur++){ zN8&M<mTl  
if(i1==mid+1) AU${0#WV_  
data[cur]=temp[i2++]; N";dG 3  
else if(i2>r) 6#lC(ko'  
data[cur]=temp[i1++]; 0'`8HP  
else if(temp[i1] data[cur]=temp[i1++]; g}s-v?+  
else UVQa af  
data[cur]=temp[i2++]; 0ga1Yr]  
} UHsrZgIRYT  
} ]R3pBC"Jv  
osgS?=8  
} `!>dbR&1  
7T(OV<q;#  
改进后的归并排序: 4jyr\=42F'  
J,77pf!B  
package org.rut.util.algorithm.support; \Z7([Gh  
X6"^:)&1M  
import org.rut.util.algorithm.SortUtil; `__?7"p )\  
6XxG1]84  
/** Lb3K};SIV  
* @author treeroot Xxsnpb>  
* @since 2006-2-2 E[htB><  
* @version 1.0 "8iyMP%8  
*/ *~lgU4  
public class ImprovedMergeSort implements SortUtil.Sort { "}~i7NBB  
?U9d3] W  
private static final int THRESHOLD = 10; i[BR(D&l_p  
+hvIJv ?  
/* YO!7D5rV#  
* (non-Javadoc) h9OL%n 7m'  
* G*w W&R)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4+?ZTc(  
*/ A%czhF  
public void sort(int[] data) { .0*CT:1=0  
int[] temp=new int[data.length]; >7Sl( UY-  
mergeSort(data,temp,0,data.length-1); :,z3 :PL  
} 3K20f8g  
o:Os_NaD  
private void mergeSort(int[] data, int[] temp, int l, int r) { $CYpO}u#  
int i, j, k; elHarey`f  
int mid = (l + r) / 2; O[(HE 8E  
if (l == r) ]ieA?:0Hi  
return; sq6%=(q(?  
if ((mid - l) >= THRESHOLD) m+8b2H:V  
mergeSort(data, temp, l, mid); MHT,rqG  
else @7Rt[2"e  
insertSort(data, l, mid - l + 1); IWRq:Gw  
if ((r - mid) > THRESHOLD) eYX_V6c  
mergeSort(data, temp, mid + 1, r); 6UAxl3-\  
else Jc#)T;# 6  
insertSort(data, mid + 1, r - mid); FC- *?  
lXk-86[M  
for (i = l; i <= mid; i++) { W;}u 2GH  
temp = data; bz@=zLBt  
} _(kwD^x6O{  
for (j = 1; j <= r - mid; j++) { GTIfrqT  
temp[r - j + 1] = data[j + mid]; Jz3<yQ-  
} T]Td4T!  
int a = temp[l]; $cpQ7  
int b = temp[r]; |ij5c@~&  
for (i = l, j = r, k = l; k <= r; k++) { f<U m2YGW  
if (a < b) { D}/.;]w<[&  
data[k] = temp[i++]; p1gX4t]%}a  
a = temp; ]4Yb$e`  
} else { e4H0<h }{  
data[k] = temp[j--]; e^Wv*OD'  
b = temp[j]; d*:qFq_  
} f I-"8f0_  
} ieLN;)Iy^  
} W9m[>-Ew  
N4(VRA  
/** jG ;(89QR/  
* @param data O|TwG:!  
* @param l !J(,M)p!  
* @param i G`lhvpifG  
*/ mb`}sTU).  
private void insertSort(int[] data, int start, int len) { 2DqHqq9m  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Gz5@1CF  
} 4qcIoO  
} 2Xs< 1rF  
} ef ;="N  
} ]Tw6Fg1o>  
[a*>@IR  
堆排序: Z5a@fWU  
ZUI9[A?  
package org.rut.util.algorithm.support; e[&3K<  
MCpK^7]k  
import org.rut.util.algorithm.SortUtil; I[IQFka}  
8/$iCW  
/** ly5L-=Xb  
* @author treeroot Ijro;rsEKM  
* @since 2006-2-2 zV Li  
* @version 1.0 D)cwttH  
*/ ?o'arxCxZn  
public class HeapSort implements SortUtil.Sort{ y'wW2U/ 1-  
$K6`Q4`  
/* (non-Javadoc) `;2`H, G'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %--5bwZi  
*/ k8>^dZub  
public void sort(int[] data) { 4DM|OL`w  
MaxHeap h=new MaxHeap(); (uz!:dkvx  
h.init(data); Px&Mi:4tG  
for(int i=0;i h.remove(); iL' ]du<wk  
System.arraycopy(h.queue,1,data,0,data.length); _u5U> w  
} dg8\(G  
/`@>v$oo  
private static class MaxHeap{ r_RTtS#  
wIHz TL  
void init(int[] data){ 6{WT;W>WT:  
this.queue=new int[data.length+1]; [+7X&B  
for(int i=0;i queue[++size]=data; &}=,8Gt1G  
fixUp(size); ~ZN9 E-uL  
} ]>T/Gl1  
} y^BM*CI  
!qve1H4d2  
private int size=0; YWF<2l.  
BEx^IQ2  
private int[] queue; 9DE)5/c`v  
3_/d=ZI\  
public int get() { >;?97'M  
return queue[1]; -e\56%\~_  
}  ?C\9lLX  
Nuq/_x  
public void remove() { KphEw[4/  
SortUtil.swap(queue,1,size--); JwVv+9hh  
fixDown(1); /omVM u  
} AOUO',v  
file://fixdown _zwuK1e  
private void fixDown(int k) { >@iV!!  
int j; ?! Gt. fb  
while ((j = k << 1) <= size) { cXH?'q 'vZ  
if (j < size %26amp;%26amp; queue[j] j++; nJC}wh2d#  
if (queue[k]>queue[j]) file://不用交换 z8MYgn 7  
break; /% 1lJD  
SortUtil.swap(queue,j,k); KguFU  
k = j; Q)&Ztw<  
} Vtri"G8 aB  
} _;W|iUreb  
private void fixUp(int k) { '5\1uB PKW  
while (k > 1) { R5zV= N  
int j = k >> 1; [%:NR  
if (queue[j]>queue[k]) :wm^04<i   
break; uM#/  
SortUtil.swap(queue,j,k); dI|/Xm>  
k = j; +^:K#S9U  
} eyV904<F  
} ^;bkU|(`6  
)=@ XF0  
} !2}Q9a  
TmiQq'm[b  
} /2 N%Z  
?9A[;j|a0  
SortUtil: m\=u/Zip  
_i#Z'4?2E  
package org.rut.util.algorithm; _u; UU$~  
2BY:qz%:  
import org.rut.util.algorithm.support.BubbleSort; k@'.d)y0`  
import org.rut.util.algorithm.support.HeapSort; Yg b#U'|  
import org.rut.util.algorithm.support.ImprovedMergeSort; l?~h_8&fT  
import org.rut.util.algorithm.support.ImprovedQuickSort; EzaOg|  
import org.rut.util.algorithm.support.InsertSort; {[+gM?  
import org.rut.util.algorithm.support.MergeSort; q[lqEc  
import org.rut.util.algorithm.support.QuickSort; I(4k{=\ph]  
import org.rut.util.algorithm.support.SelectionSort; P.0-(  
import org.rut.util.algorithm.support.ShellSort; xAflcY>Ozs  
;z#9>99rH  
/** [A47OR  
* @author treeroot [#tW$^UD  
* @since 2006-2-2 (ym)q#^  
* @version 1.0 Df9}YI ;?  
*/ (@Bm2gH  
public class SortUtil { <Jx{Uv  
public final static int INSERT = 1; ia[wVxd  
public final static int BUBBLE = 2; x$E l7=.  
public final static int SELECTION = 3; t +_G%tv  
public final static int SHELL = 4; \?Z dUY  
public final static int QUICK = 5; gqhW.e}]  
public final static int IMPROVED_QUICK = 6; 7>'F=}6[Y  
public final static int MERGE = 7; t j0vB]c  
public final static int IMPROVED_MERGE = 8; }|d:(*  
public final static int HEAP = 9; V-31x)  
':=C2x1d|  
public static void sort(int[] data) {  T-\,r  
sort(data, IMPROVED_QUICK); IO4 IaeM  
} `#V"@Go  
private static String[] name={ #3S/TBy,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *=8)]_=f  
}; }y1M0^M-$  
>Et?7@   
private static Sort[] impl=new Sort[]{ ) E\pQ5&  
new InsertSort(), ATU@5,9  
new BubbleSort(), UpITx]y?"m  
new SelectionSort(), ;dnn 2)m  
new ShellSort(), ;WhB2/5v  
new QuickSort(), n F-FoO98  
new ImprovedQuickSort(), =P!Vi6[gF~  
new MergeSort(), CY:pYke=  
new ImprovedMergeSort(), La!PG Z{  
new HeapSort() M$)+Uo 2  
}; QqDF_  
ps]6,@uyB  
public static String toString(int algorithm){ ;KhYh S(q  
return name[algorithm-1]; g^idS:GtX5  
} m H?hzxa+  
GHkSU;})  
public static void sort(int[] data, int algorithm) { % /s1ma6q  
impl[algorithm-1].sort(data); }X UHP%  
} ..!yf e"5  
%F7aFvl*  
public static interface Sort { XEuv aM  
public void sort(int[] data); IH0Uq_  
} 0K!9MDT}*  
#wo_  
public static void swap(int[] data, int i, int j) { |LQmdgVr$  
int temp = data; YcI]_[  
data = data[j]; D"hiEz  
data[j] = temp; A-~)7-  
} , R)[$n  
} F,D &  
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