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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。 5dPPm%U{  
插入排序: %~`y82r6  
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package org.rut.util.algorithm.support; b/I_iJ8t  
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import org.rut.util.algorithm.SortUtil; ,hV}wK!  
/** `h:$3a:5  
* @author treeroot 20O\@}2q2M  
* @since 2006-2-2 _Kw<4 $0<p  
* @version 1.0 c5($*tTT  
*/ %]zaX-2dm!  
public class InsertSort implements SortUtil.Sort{ h5x_Vjj  
)Yc jx~   
/* (non-Javadoc) O7MFKAaD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Zn |?#F  
*/ + \DGS  
public void sort(int[] data) { ^x:%_yGY  
int temp; JIGoF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %B ,>6 `[  
} KXAh0A?&+  
} ["N)=d|LS  
} L ~,x~sLd  
*gJ:irah  
} |fJpX5W-l  
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冒泡排序: Ed(6%kd  
'mH9 O  
package org.rut.util.algorithm.support; TT'sO[N[  
-UHa;W H  
import org.rut.util.algorithm.SortUtil; F@76V$U.  
sO5~!W>Z  
/** z/B[quSio  
* @author treeroot E&}@P0^  
* @since 2006-2-2 .5i\L OTd  
* @version 1.0 'T8(md299  
*/ x9,X0JO  
public class BubbleSort implements SortUtil.Sort{ )YP"\E  
P|>pm]>C  
/* (non-Javadoc) oi@/H\7j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JDQ7  
*/ :{(` ;fJ  
public void sort(int[] data) { N3_rqRd^  
int temp;  8>}k5Qu  
for(int i=0;i for(int j=data.length-1;j>i;j--){ IfK%i/J  
if(data[j] SortUtil.swap(data,j,j-1); sS 5aJ}Qs  
} }.nHT0l  
} ?k5m1,fHW  
} j~|pSu.<  
} 3kTOWIX  
5#DtaVz  
} 0/1Ay{ns  
|;G9K`8  
选择排序: deRnP$u0  
9`A}-YA !  
package org.rut.util.algorithm.support; Kzj9!'0R  
D7 D:?VoR  
import org.rut.util.algorithm.SortUtil; h!vq~g  
[&tN(K9*  
/** cgQ4JY/6  
* @author treeroot F8c^M</  
* @since 2006-2-2 Wfw6(L  
* @version 1.0 Y-0o>:SM  
*/ 3gUGfe di  
public class SelectionSort implements SortUtil.Sort { 0Gq}x;8H&  
O|5Z-r0<  
/* B 66-l!xa  
* (non-Javadoc) C78V/{  
* }i)^?@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7U@;X~c  
*/ >~nc7j u  
public void sort(int[] data) { P?.j wI  
int temp; ckglDhC  
for (int i = 0; i < data.length; i++) { "@!B"'xg  
int lowIndex = i; ._6|epJ#  
for (int j = data.length - 1; j > i; j--) { 'S[&-D%(3  
if (data[j] < data[lowIndex]) { T6P9Icv?@7  
lowIndex = j; Hn- k*Y/P  
} 8hKyp5(%l  
} n1"QHA  
SortUtil.swap(data,i,lowIndex); =;) M+"  
} X-Yy1"6m1  
} wDL dmrB  
OdZLJt?g  
} l$>))cW!  
fsA-}Qc  
Shell排序: qoifzEc`U  
e5 "?ol0  
package org.rut.util.algorithm.support; v0d<P2ix  
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import org.rut.util.algorithm.SortUtil; AP2BND9  
na%DF@Rt#  
/** n#NE.ap$&,  
* @author treeroot OYj4G ?c  
* @since 2006-2-2 7AOjlC9R}  
* @version 1.0 A`H&" A  
*/ pejG%pJ  
public class ShellSort implements SortUtil.Sort{ GC<zL }  
ThvVLK  
/* (non-Javadoc) 3RW3<n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZjOUk;H?  
*/ x}c%8dO#J  
public void sort(int[] data) { cP]5Qz   
for(int i=data.length/2;i>2;i/=2){ &ND8^lR=Y;  
for(int j=0;j insertSort(data,j,i); +1R qo  
} bsn.HT"5  
} AzfYw'^&9  
insertSort(data,0,1); +RuPfw{z  
} ^<}>]F_  
:'t+*{ff  
/** OE"r=is  
* @param data C4`u3S  
* @param j =s\RK   
* @param i <f')]  
*/ ?puZqVu5  
private void insertSort(int[] data, int start, int inc) { fG^#G/n2  
int temp; 4)IRm2G  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fV\ eksBF  
} (16U]s  
} M<s Y_<z  
} jDaWmy<ha  
}I Rx$ cKV  
} cl4Vi%   
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快速排序: o C5}[cYD`  
D+y_&+&,t  
package org.rut.util.algorithm.support; x;G~c5  
ZgXn8O[a  
import org.rut.util.algorithm.SortUtil; Qxvj`Ge  
Yy_o*Ozq  
/** nmc5c/C|-I  
* @author treeroot @ eQo  
* @since 2006-2-2 t]j4PNzn  
* @version 1.0 P/'9k0zs)  
*/ +&T;jad2  
public class QuickSort implements SortUtil.Sort{ S!/N lSr<  
+Y:L4`  
/* (non-Javadoc) 5:=ECtKi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uAWmg8  
*/ uMB|x,X I  
public void sort(int[] data) { @rTAbEk{U  
quickSort(data,0,data.length-1); }iK_7g`yKa  
} 6L2Si4OGjG  
private void quickSort(int[] data,int i,int j){ c1,dT2:=  
int pivotIndex=(i+j)/2; E2PMcT{)_  
file://swap  `#m>3  
SortUtil.swap(data,pivotIndex,j); pO~VI$7  
8@S5P$b};  
int k=partition(data,i-1,j,data[j]); 7= o2$  
SortUtil.swap(data,k,j); mNvK|bTUT  
if((k-i)>1) quickSort(data,i,k-1); s 4Mi9h_  
if((j-k)>1) quickSort(data,k+1,j); \n @S.Y?P  
,r,~1oV<"  
} &I[ITp6y 0  
/** GisI/Ir[  
* @param data `mI% Se  
* @param i +18)e;   
* @param j 0P5!fXs*  
* @return yxECK&&P0#  
*/ `VT0wAe2;  
private int partition(int[] data, int l, int r,int pivot) { wGqQR)a  
do{ yrDWIU(8;6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~~.v*C[  
SortUtil.swap(data,l,r); No\H QQ  
} T4W"!4[  
while(l SortUtil.swap(data,l,r); [n`SXBi+n  
return l; S;o U'KOY  
} E0nR Vg  
OFJ T  
} A%VBBvk  
}T?MWcG4  
改进后的快速排序: ]~,V(K  
^J8sR4p#  
package org.rut.util.algorithm.support; ~urV`J  
>`jsUeS  
import org.rut.util.algorithm.SortUtil; @17hB h  
pai>6p  
/** N*PF&MyB  
* @author treeroot Dm@wTt8N(  
* @since 2006-2-2 E)Z$7;N0x  
* @version 1.0 kT(}>=]g  
*/ Fr%LV#Q  
public class ImprovedQuickSort implements SortUtil.Sort { qAH@)}  
h(,SAY_  
private static int MAX_STACK_SIZE=4096; ~P*t_cpZ  
private static int THRESHOLD=10; 5 zlgmCGow  
/* (non-Javadoc) wHW";3w2~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c<V.\y0x  
*/ _tfZg /+)  
public void sort(int[] data) { {IeW~S' &  
int[] stack=new int[MAX_STACK_SIZE]; `Z{kJMS  
t)o #!)|  
int top=-1; 8#%p[TLj  
int pivot; *G^n<p$"  
int pivotIndex,l,r; q+{-p?;;  
#e.2m5T  
stack[++top]=0; ?Z@FxW  
stack[++top]=data.length-1; /Yk2 |L  
r}i<cyL  
while(top>0){ V1KWi ^  
int j=stack[top--]; j%iz>  
int i=stack[top--]; i0uBb%GMT  
e~r%8.Wm  
pivotIndex=(i+j)/2; d\`A ^  
pivot=data[pivotIndex]; 4#uWj ?u  
'sJ=h0d_[V  
SortUtil.swap(data,pivotIndex,j); M}4%LjD  
MN2#  
file://partition \5^#5_<  
l=i-1; T0WB  
r=j; /)SwQgK#  
do{ .~V0>r~my  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); oC>QJ(o,8  
SortUtil.swap(data,l,r); 8NJ(l  
} @oC8:  
while(l SortUtil.swap(data,l,r); yy4QY%  
SortUtil.swap(data,l,j); cgsM]2ZYs  
vy#n7hdCc  
if((l-i)>THRESHOLD){ zIWw055W  
stack[++top]=i; SU"-%}~O#,  
stack[++top]=l-1; o)KF+[^  
} ll {jE  
if((j-l)>THRESHOLD){ S\GC^ FK  
stack[++top]=l+1; p5^,3&  
stack[++top]=j; )((Jnm D  
} i TY4X:x  
~C< X~$y&  
} i8I%}8  
file://new InsertSort().sort(data); \t'(&taX<  
insertSort(data); l?~SH[V  
} 9iWDEk  
/** K1Nhz'^=D  
* @param data <CJua1l\  
*/ cD^n}'ej  
private void insertSort(int[] data) { AwB ]0H  
int temp; [P2$[|IM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ev IL[\Dy  
} F"j0;}+N  
} `pzp(\lc  
} Nh~ Hh(   
b9[;qqq@'  
} d8Jy$,/`?  
r_T\%  
归并排序: =?T\zLN=  
q2 D2:0^2  
package org.rut.util.algorithm.support; ]y@8mb&  
4H8vB^  
import org.rut.util.algorithm.SortUtil; 4)+MvKxjS  
{gluK#Qm  
/** aM?Xi6 U5  
* @author treeroot $6h:j#{JE  
* @since 2006-2-2 p*F&G=ZE  
* @version 1.0 7+JQaYO`"  
*/ !7@IWz(, "  
public class MergeSort implements SortUtil.Sort{ *}Zd QJL  
31 4PcSc  
/* (non-Javadoc) 8I04Nx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;oV dkp  
*/ n(,b$_JK7  
public void sort(int[] data) {  db^S@}  
int[] temp=new int[data.length]; pj&vnX6O^  
mergeSort(data,temp,0,data.length-1); BKfcK>%g  
} 64>E|w  
jZS6f*$  
private void mergeSort(int[] data,int[] temp,int l,int r){  Ek(. ["  
int mid=(l+r)/2; x;S v&  
if(l==r) return ; Jf@M>BT^A  
mergeSort(data,temp,l,mid); r9 'lFj  
mergeSort(data,temp,mid+1,r); 4m$nVv  
for(int i=l;i<=r;i++){ iU{bPyz ,  
temp=data; Rv ?G o2  
} h<\o[n7j  
int i1=l; G+ PBV%gE[  
int i2=mid+1; /]2-I_WB  
for(int cur=l;cur<=r;cur++){ 12DMb9_rp  
if(i1==mid+1) g<{/mxv/  
data[cur]=temp[i2++]; #sdW3m_%  
else if(i2>r) qlD+[`=b  
data[cur]=temp[i1++]; "2(lgxhj  
else if(temp[i1] data[cur]=temp[i1++]; *O,\/aQ+  
else DtG><g}[]  
data[cur]=temp[i2++]; NmYSk6kWJ  
} e4u$+  
} ~ z*  
{co(w 7  
} YOwo\'|=  
%h 6?/  
改进后的归并排序: /ZHuT=j1  
D{I^_~-\5  
package org.rut.util.algorithm.support; dbSIC[q  
S:/;|Dg  
import org.rut.util.algorithm.SortUtil; {EGiGwpf  
?~uTbNR  
/** RzQ1Wq  
* @author treeroot o{pQDI {R  
* @since 2006-2-2 Q\&FuU  
* @version 1.0 'm}K$h(U  
*/ >t7xa]G  
public class ImprovedMergeSort implements SortUtil.Sort { u*Z>&]W_  
DhV($&*M  
private static final int THRESHOLD = 10; |4aV~n[>#  
"{105&c\  
/* SdBv?`u|g  
* (non-Javadoc) ?Q[uIQ?dV  
* 0RAmwfXm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .x5Y fe  
*/ !}|n3wQ  
public void sort(int[] data) { A-1Wn^,> *  
int[] temp=new int[data.length]; _Sy-&}c+ +  
mergeSort(data,temp,0,data.length-1); :&}(?=<R}L  
} P66{l^  
Re-~C[zwT  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5:/ zbt\C  
int i, j, k; f@l$52f3D  
int mid = (l + r) / 2; vpcx 1t<  
if (l == r) ;E>5<[aa  
return; no`c[XY  
if ((mid - l) >= THRESHOLD) 3P~I' FQ  
mergeSort(data, temp, l, mid); JO\Tf."a\  
else eU 'DQp*  
insertSort(data, l, mid - l + 1); "_]n_[t2C  
if ((r - mid) > THRESHOLD) J * $u  
mergeSort(data, temp, mid + 1, r); *gfx'$  
else -hj@^Auf  
insertSort(data, mid + 1, r - mid); ojU:RRr4l$  
=k6zUw;5 U  
for (i = l; i <= mid; i++) { Vd~{SS 2>  
temp = data; - FV$Sne  
} /fbI4&SB!  
for (j = 1; j <= r - mid; j++) { F%@( $f  
temp[r - j + 1] = data[j + mid]; P1)f-:;  
} m6tbN/EJZ  
int a = temp[l]; j9Ptd$Uj  
int b = temp[r]; lb ol+O65  
for (i = l, j = r, k = l; k <= r; k++) { X5UcemO  
if (a < b) { y E-H-r~I  
data[k] = temp[i++]; H$TYp  
a = temp; Nq6~6Rr  
} else { 6I GUp  
data[k] = temp[j--]; rq?:I:0  
b = temp[j]; &SfJwdG*=  
} a)=WDRk  
} \PU3{_G]  
} &QO~p3M  
u}Vc2a,WV  
/** u H[d%y/  
* @param data ]Aap4+s  
* @param l (e sTb,  
* @param i g\;AU2?p7  
*/ =KqcWN3k  
private void insertSort(int[] data, int start, int len) { j_S///  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); B5h-JON]-  
} 7^,C=2  
} jV Yt=j*"V  
} hO^8CA,5  
} )w];eF0c  
rB|Mp!g%@  
堆排序: oR (hL4Dc  
+shT}$cb1  
package org.rut.util.algorithm.support; N<o3pX2i]  
uU(G&:@  
import org.rut.util.algorithm.SortUtil; Cc*"cQe  
V&`\ s5Q  
/** _"n1"%Ns  
* @author treeroot csE 9Ns  
* @since 2006-2-2 N1$lG? )+  
* @version 1.0 y;A<R[|Ve  
*/ Kn3qq  
public class HeapSort implements SortUtil.Sort{ @w&VI6  
w"d~R   
/* (non-Javadoc) f1MKYM%^x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^|y6oj  
*/ <,p|3p3  
public void sort(int[] data) { &No6k~T0:b  
MaxHeap h=new MaxHeap(); UMR0S5`}  
h.init(data); <>$`vuU  
for(int i=0;i h.remove(); K=Z~$)Og)  
System.arraycopy(h.queue,1,data,0,data.length); xLX<. z!r  
} tWR>I$O8F  
lJ.:5$2H  
private static class MaxHeap{ W^; wr#  
KrE:ilm#^Y  
void init(int[] data){ "?EoYF_  
this.queue=new int[data.length+1]; gTWl];xja  
for(int i=0;i queue[++size]=data; yO Ed8  
fixUp(size); Jydz2 zt!  
} vQB;a?)o  
} BwtjTwd  
E!<w t  
private int size=0; V`xZ4 i%L  
\GYh"5  
private int[] queue; @wO"?w(  
k(1]!c4J0  
public int get() { QX}O{LQR  
return queue[1]; l H:Y8j  
} eh_ {-  
SK f9 yS#  
public void remove() { '>dsROB->  
SortUtil.swap(queue,1,size--); |uo<<-\jTO  
fixDown(1); x +Vp&  
} mU.(aL HW  
file://fixdown *Pj[r  
private void fixDown(int k) { EIZSV>  
int j; pvCn+y/U;  
while ((j = k << 1) <= size) { y<r7_ysi  
if (j < size %26amp;%26amp; queue[j] j++; P,5gaT)  
if (queue[k]>queue[j]) file://不用交换 )>,; GVu"  
break; j2O?]M  
SortUtil.swap(queue,j,k); Yw7+wc8R  
k = j; eytd@-7uX  
} UHr0J jQK  
} ,iKEIxA!  
private void fixUp(int k) { ~=HrD?-99p  
while (k > 1) { [/_M!&zz2  
int j = k >> 1; HPl'u'.Hg  
if (queue[j]>queue[k]) ^8dd  
break; 7hAFK  
SortUtil.swap(queue,j,k); g/H:`J  
k = j; y9W6e "  
} 3^p<Wx  
} /)I:C z/f  
%qG nvQ  
} .xJW=G{/  
{m1=#*  
} GFM $1}  
.48Csc-  
SortUtil: >y&Db  
C1=7.dPr  
package org.rut.util.algorithm; kmHIU}Z  
ho*44=j  
import org.rut.util.algorithm.support.BubbleSort; VQSwRL3B=  
import org.rut.util.algorithm.support.HeapSort; Z"spua5  
import org.rut.util.algorithm.support.ImprovedMergeSort; y&8' V\  
import org.rut.util.algorithm.support.ImprovedQuickSort; rv`kP"I  
import org.rut.util.algorithm.support.InsertSort; a/ d'(]  
import org.rut.util.algorithm.support.MergeSort; m1,?rqeb  
import org.rut.util.algorithm.support.QuickSort; PF$K> d  
import org.rut.util.algorithm.support.SelectionSort; O'tVZ!C#J  
import org.rut.util.algorithm.support.ShellSort; 9+'QH  
zY?GO"U"  
/** 3`y9V2&b  
* @author treeroot ;r(hZ%pD  
* @since 2006-2-2 K_\fO|<k  
* @version 1.0 )b<-=VR  
*/ $dr=M (&  
public class SortUtil { US8pT|/  
public final static int INSERT = 1; w!$|IC  
public final static int BUBBLE = 2; `[T|Ck5  
public final static int SELECTION = 3; l=(4o4um  
public final static int SHELL = 4; R@lmX%Z1  
public final static int QUICK = 5; J;Y=o B  
public final static int IMPROVED_QUICK = 6; 6{2LV&T=u  
public final static int MERGE = 7; sW/^82(dM  
public final static int IMPROVED_MERGE = 8; ?m&?BsW$)  
public final static int HEAP = 9; r;3{%S._  
PnB%vS  
public static void sort(int[] data) { #BA=?7  
sort(data, IMPROVED_QUICK); sT| $@$bN  
} 6"+/Imb-  
private static String[] name={ {d`e9^Z:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =-#>NlB$w  
}; u,<#z0R|;$  
L<HJ!  
private static Sort[] impl=new Sort[]{ c^^[~YW j  
new InsertSort(), ;{Cr+lqTJ  
new BubbleSort(), 1r6>.&p  
new SelectionSort(), 9f ,$JjX[  
new ShellSort(), tb;!2$  
new QuickSort(), anwMG0  
new ImprovedQuickSort(), #{973~uj  
new MergeSort(), [kf$8 2  
new ImprovedMergeSort(), SrMg=a  
new HeapSort() ,xA`Fu9^  
}; BR1oE3in  
X"V,3gDG  
public static String toString(int algorithm){ 9}e`_z  
return name[algorithm-1]; A%H"a+  
} HX1RA 5O  
`<I+(8]Uz  
public static void sort(int[] data, int algorithm) { &A=>x  
impl[algorithm-1].sort(data); %T:~N<8)  
} NYwE=b~I  
" S6'<~s  
public static interface Sort { ^l\U6$3  
public void sort(int[] data); YJZVi ic  
} Q v/}WnBk  
Y.M^tH:  
public static void swap(int[] data, int i, int j) { X}?`G?'  
int temp = data; n[Jpy[4g  
data = data[j]; UEeD Nl$^u  
data[j] = temp; eNN)2-96  
} CB(Qy9C%h[  
} 2BA'Zu`  
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