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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。 >,yE;zuw  
插入排序: |7LhE+E  
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package org.rut.util.algorithm.support; }6*+>?  
O/Ub{=g  
import org.rut.util.algorithm.SortUtil; ry)g<OA  
/** &mXJL3iN  
* @author treeroot >slD.rb]  
* @since 2006-2-2 % P .(L  
* @version 1.0 q~]S5  
*/ 2.)xWCG  
public class InsertSort implements SortUtil.Sort{ A/ZZ[B-  
TwJiYXHw?  
/* (non-Javadoc) -}#=L@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k<(G)7'gm  
*/ }tJR Bb  
public void sort(int[] data) { s\O4D*8  
int temp; Jmg<mjq/G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v<CZ.-r\j  
} <q\OREMsq  
} H2[VZ&Pg  
} @D1}).  
rH Y SS0*3  
} .\)`Xj[?  
9n9Z  
冒泡排序: 1 1Sflj  
t7#lRp&  
package org.rut.util.algorithm.support; oE/g) m%  
T1$=0VSEa+  
import org.rut.util.algorithm.SortUtil; VS` tj  
VgGMlDl  
/** ufl[sj%^|  
* @author treeroot 'C[{cr.`  
* @since 2006-2-2 4gD;XNrV  
* @version 1.0 D/U=zDpiB  
*/ l/*NscYtQ  
public class BubbleSort implements SortUtil.Sort{ &k53*Wo  
9d kuvk}:  
/* (non-Javadoc) 2:[ -  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /Uxp5 b h  
*/ U)v){g3w)  
public void sort(int[] data) { M$J{clr  
int temp; &BOq%*+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ WzinEo{ f  
if(data[j] SortUtil.swap(data,j,j-1); U~3uu &/r  
} bqPaXH n  
} b6(LoN.  
} r,cz yE/  
}  {^8->V  
O~P1d&:L  
} yV.E+~y  
mv,p*0  
选择排序: <Pn]{N  
pZxuV(QP`  
package org.rut.util.algorithm.support; npCiqO  
2K:Rrn/cR  
import org.rut.util.algorithm.SortUtil; 1 lZRi-P  
wjzR 8g0bQ  
/** XfZ^,' z  
* @author treeroot B+VD53 V  
* @since 2006-2-2 DYf3>xh>xb  
* @version 1.0 &"gQrBa  
*/ F=g +R~F  
public class SelectionSort implements SortUtil.Sort { x*#9\*@EI  
F`Ld WA  
/* GbB :K2  
* (non-Javadoc) w;p~|!  
* e+~Q58oD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ).$q9G  
*/ p)e?0m26  
public void sort(int[] data) { < $>Jsv  
int temp; xJ rKH  
for (int i = 0; i < data.length; i++) { q)f-z\  
int lowIndex = i; wZnv*t_  
for (int j = data.length - 1; j > i; j--) { OD8{ /7  
if (data[j] < data[lowIndex]) { ,9.-A-Yw  
lowIndex = j; ix+sT|>  
} ^[g7B"`K5  
} Jfs_9g5  
SortUtil.swap(data,i,lowIndex); HU1ZQkf  
} o+0x1Ct3P  
} JwNB)e D  
"o}}[hRP  
} o6ag{Yp  
FzzV%  
Shell排序: i_{b *o_an  
ym*oCfu=  
package org.rut.util.algorithm.support; G ~X93J  
zDoh p 5,  
import org.rut.util.algorithm.SortUtil; GwM(E^AG  
*Sw1b7l  
/** ?,z/+/:  
* @author treeroot Yc3Rq4I'G  
* @since 2006-2-2 :406Oa  
* @version 1.0 .P#+V$qhv  
*/ 5H79-QLd  
public class ShellSort implements SortUtil.Sort{ _j sJS<21  
xcM*D3  
/* (non-Javadoc) AI,Jy%62/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vo`,|3^  
*/ L/KiE+Y  
public void sort(int[] data) { *-`-P  
for(int i=data.length/2;i>2;i/=2){ ! _p(H  
for(int j=0;j insertSort(data,j,i); .^!<cFkCE  
} FNR<=M  
} PD $' ~2  
insertSort(data,0,1); [I 6&|Lz>  
} /Bs42uJ3  
PHR:BiMZ  
/** B&rw R/d  
* @param data =;(y5c  
* @param j @Yj+u2!  
* @param i g:eq B&&  
*/ bw8[L;~%_  
private void insertSort(int[] data, int start, int inc) { @8eQ|.q]Q  
int temp; DIBoIWSuR  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `M[o.t  
} ;ZoEqMv  
} m <'&`B;  
} Xrr3KQaK&  
0Zh]n;S3m  
} p;Nq(=] \  
Ox%p"xuP,  
快速排序: RdqB^>X  
-gB9476-  
package org.rut.util.algorithm.support; X" Upml  
qO{Yr$ V%  
import org.rut.util.algorithm.SortUtil; 4l'`q+^-  
sR;u#".  
/** Yfr4<;%  
* @author treeroot Mq jdW   
* @since 2006-2-2 ZxB7H{  
* @version 1.0 <O0.q.  
*/ ^v5<*uf%m  
public class QuickSort implements SortUtil.Sort{ d1';d6.u\  
YkSHJ{ >  
/* (non-Javadoc) T#GTNk!v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *f o>  
*/ \b*z<Odv  
public void sort(int[] data) { LYO2L1u)  
quickSort(data,0,data.length-1); $X,dQ]M  
} "\+.S]~  
private void quickSort(int[] data,int i,int j){ %J L P=(  
int pivotIndex=(i+j)/2; ^Lv )){t  
file://swap :i>If:>g  
SortUtil.swap(data,pivotIndex,j); $38)_{  
[\e/xY(4  
int k=partition(data,i-1,j,data[j]); C}qHvwFm  
SortUtil.swap(data,k,j); 8d7 NESYl  
if((k-i)>1) quickSort(data,i,k-1); "0 $UnR  
if((j-k)>1) quickSort(data,k+1,j); x c]#8K  
yA#nnu1  
} 4L_)@n}  
/** a}Z+"D  
* @param data qTSe_Re  
* @param i Eh*(N(`  
* @param j 3EHB~rL/C  
* @return S,x';"  
*/ JwQ/A[b  
private int partition(int[] data, int l, int r,int pivot) { NFyKTA6  
do{ nS](d2  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); waU2C2!w  
SortUtil.swap(data,l,r); k [LV^oEg  
} c\;_ jg  
while(l SortUtil.swap(data,l,r); >Ptu-*  
return l; ~F8xXW0  
} msY6zJc`  
W{c Z7$d  
} zdm2`D;~p  
S=j pn  
改进后的快速排序: hd]ts.  
[{`2FR:Cd  
package org.rut.util.algorithm.support; s (K SN/  
d<6m_! L  
import org.rut.util.algorithm.SortUtil; yfal'DqKF  
4xH/a1&p=  
/** lQd7p+ 21  
* @author treeroot txvo7?Y*4  
* @since 2006-2-2 R a"hdxH  
* @version 1.0 qtmKX  
*/ A'.=SA2.Y  
public class ImprovedQuickSort implements SortUtil.Sort { CW2)1%1iz  
0HUylnXf0  
private static int MAX_STACK_SIZE=4096; =^SxZ Bn  
private static int THRESHOLD=10; S+#|j  
/* (non-Javadoc) 91]sO%3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YN+vk}8 <  
*/ VFzIBgJ3  
public void sort(int[] data) { j8nkNE]&   
int[] stack=new int[MAX_STACK_SIZE]; 2v2XU\u{t  
xK_oV+  
int top=-1; R8_I ASs  
int pivot; TkJ[N4'0  
int pivotIndex,l,r; uovv">Uw  
b]fx  
stack[++top]=0; ]Axz}:  
stack[++top]=data.length-1; =~k c7f{  
!=A;?Kdq  
while(top>0){ @Ns[qn;9  
int j=stack[top--]; mBE&>}G<  
int i=stack[top--]; Q@7d:v  
1`YU9?  
pivotIndex=(i+j)/2; dFF=-_O>  
pivot=data[pivotIndex]; L,[Q{:CS  
Fs].Fa  
SortUtil.swap(data,pivotIndex,j); 0ZM(heQ  
fx(h fz  
file://partition 993f6  
l=i-1; nYFrp)DLK  
r=j; m3TR}=n  
do{ ;8eKAh  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i'7+ ?YL  
SortUtil.swap(data,l,r); Ps74SoD-  
} Jjm#ofv  
while(l SortUtil.swap(data,l,r); m3gv %h  
SortUtil.swap(data,l,j); 5&V=$]t  
FO5a<6  
if((l-i)>THRESHOLD){  }:Gs ,  
stack[++top]=i; #3QPcoxa  
stack[++top]=l-1; j/z=<jA  
} w y|^=#k  
if((j-l)>THRESHOLD){ 2S{P(B   
stack[++top]=l+1; N,c!1: b  
stack[++top]=j; ^>?=L\[  
} +yp:douERi  
H*'1bLzq  
} !g9k9 l  
file://new InsertSort().sort(data); /{\ /e"5  
insertSort(data); U}RBgPX!  
} ?: yz/9(  
/**  ch8a  
* @param data `8ac;b  
*/ d_,5;M^k  
private void insertSort(int[] data) { lL:a}#qxU  
int temp; e@Lxduq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y|2<Vc  
} AJbCC  
} Y%.o TB&  
} kh5a>OX  
LE\=Y;%  
} lh8Q tPe  
 X0VS a{  
归并排序: L~Gr,i  
+;?mg(:  
package org.rut.util.algorithm.support; P>V oA  
{> YsrD C  
import org.rut.util.algorithm.SortUtil;  :\\NK/"  
5#,H&ui\  
/** \8`7E1d  
* @author treeroot 7$'AH:K  
* @since 2006-2-2 /MGapmqV9  
* @version 1.0 wq$$. .E  
*/ EtKq.<SJ  
public class MergeSort implements SortUtil.Sort{ eDJnzh83  
)G/bP!^+(  
/* (non-Javadoc) #ibwD:{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c*;oR$VW  
*/ HwUaaK   
public void sort(int[] data) { =AIFu\9#a`  
int[] temp=new int[data.length]; 'D+xs}\  
mergeSort(data,temp,0,data.length-1); --K) 7  
} 'J,UKK\5  
!8H0.u rw  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?zW'Hi  
int mid=(l+r)/2; ZnEgU}g<2  
if(l==r) return ; Uwc%'=@  
mergeSort(data,temp,l,mid); y, l[v39  
mergeSort(data,temp,mid+1,r); + [w 0;W_  
for(int i=l;i<=r;i++){ I-]G{  
temp=data; .U!EA0B  
} =Z\q``RBy  
int i1=l; *k{Llq  
int i2=mid+1; w2s`9  
for(int cur=l;cur<=r;cur++){ gP% <<yl  
if(i1==mid+1) C'JI%HnQ  
data[cur]=temp[i2++]; yKML{N1D  
else if(i2>r) QVT0.GzR  
data[cur]=temp[i1++]; D!`[fjs6A  
else if(temp[i1] data[cur]=temp[i1++]; imM!Me 0TE  
else [k7( t|Q{  
data[cur]=temp[i2++]; *~PB  
} k79OMf<v  
} q[U pP`Z%  
!VD$uT  
} ygz2bHpD~  
{!I`EN]  
改进后的归并排序: ? NoNg^Of  
Ku[q #_7  
package org.rut.util.algorithm.support; O60T.MM`  
< se~wR  
import org.rut.util.algorithm.SortUtil; =oSD)z1c?x  
ToHx!,tDS  
/** <aPZE6z  
* @author treeroot AF:_&gF  
* @since 2006-2-2  L` [iI  
* @version 1.0 4rhHvp  
*/ !!.@F;]W  
public class ImprovedMergeSort implements SortUtil.Sort { R~=c1bpdq  
94!} Z>  
private static final int THRESHOLD = 10; 3cJ'tRsp<  
zTue(Kr  
/* gbdzS6XW~  
* (non-Javadoc) p W[TufTa  
* \(??Ytc<B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "/R?XCBZsb  
*/ e/4C` J-  
public void sort(int[] data) { Ktk?(49  
int[] temp=new int[data.length]; ZKI8x1>Iq  
mergeSort(data,temp,0,data.length-1); @0@WklAJA  
} 3uw3 [ SR1  
(%6fZ  
private void mergeSort(int[] data, int[] temp, int l, int r) { U>n[R/~]  
int i, j, k; c6b51)sQ"  
int mid = (l + r) / 2; hrX/,D -c  
if (l == r) @CM5e!  
return; 7jw+o*;  
if ((mid - l) >= THRESHOLD) <mJ8~  
mergeSort(data, temp, l, mid); }>iNT.Lvd  
else gR/?MJ(v  
insertSort(data, l, mid - l + 1); ?* +>T@MH  
if ((r - mid) > THRESHOLD) ;QVTb3Th  
mergeSort(data, temp, mid + 1, r); eSZ':p  
else [$} \Gv  
insertSort(data, mid + 1, r - mid); w.rcYywI  
`j3 OFC{7E  
for (i = l; i <= mid; i++) { # a4OtRiI  
temp = data; F^.]g@g.|  
} uju'Bs7   
for (j = 1; j <= r - mid; j++) { me@`;Q3  
temp[r - j + 1] = data[j + mid]; E#d~.#uH  
} ;0| :.q  
int a = temp[l]; 8@doKOA~T  
int b = temp[r]; CY=lN5!J  
for (i = l, j = r, k = l; k <= r; k++) { tW!*W?  
if (a < b) { p/eaO{6 6  
data[k] = temp[i++]; 3;jx Io$,  
a = temp; !5'4FUlJ  
} else { ld"rL6  
data[k] = temp[j--]; J3'q.Pc  
b = temp[j]; Y9-F\t=~  
} 3zmbx~| =\  
} s-IM  
} VL5VYv=:  
!ni 1 qM  
/** d=D#cs;\  
* @param data W8x&:5Fc)3  
* @param l tZx}/&m-  
* @param i Af@\g-<W_  
*/ HNc/p4z  
private void insertSort(int[] data, int start, int len) { BK)<~I  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Xe:rPxZf~  
} [jCYj0Qf8  
} T#6g5Jnsp  
} Z0v?3v}9^  
} >S0kiGDV{  
i`<L#6RBT  
堆排序: QrFKjmD<  
,cS_687o  
package org.rut.util.algorithm.support; | Vlx:  
"1XTgCu\  
import org.rut.util.algorithm.SortUtil; SmvMjZ+7Y  
O3T7O`H[  
/** \ntUxPox.  
* @author treeroot +Q"~2_q5/;  
* @since 2006-2-2 _cC!rq U1  
* @version 1.0 R i,_x  
*/ WrRY 3X  
public class HeapSort implements SortUtil.Sort{ FG!hb?_1  
3G<4rH]  
/* (non-Javadoc) Qv'x+GVW]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V?0IMc  
*/ g]N'6La  
public void sort(int[] data) { VpB)5>  
MaxHeap h=new MaxHeap(); K0B<9Wi |  
h.init(data); ?*xH HI/  
for(int i=0;i h.remove(); 01&E.A  
System.arraycopy(h.queue,1,data,0,data.length); |N)),/R_  
} _Yp~Oj  
gs/ocu  
private static class MaxHeap{ .}Xf<G&  
%{3q=9ii  
void init(int[] data){ _emW#*V  
this.queue=new int[data.length+1]; f)a0!U 44  
for(int i=0;i queue[++size]=data; ZQ*Us*9I  
fixUp(size); 8HZ+r/j  
} WcM\4q@  
} Wi!"V cn  
$)X8'1%6  
private int size=0; GP %hf{  
34N~<-9AY  
private int[] queue; dkDPze9l  
[.Kp/,JY  
public int get() { &dK !+  
return queue[1]; 79d(UG'O  
} nfGI4ZE  
nP*%N|0  
public void remove() { gVR]z9  
SortUtil.swap(queue,1,size--); +w?R4Sxjn  
fixDown(1); mK"s*tD  
} y@LiUe5  
file://fixdown &(32s!qH  
private void fixDown(int k) { idX''%"  
int j; RB %y($  
while ((j = k << 1) <= size) { uZ JfIC<>  
if (j < size %26amp;%26amp; queue[j] j++; d(ypFd9z  
if (queue[k]>queue[j]) file://不用交换 NIbK3`1  
break; t:vBVDkD  
SortUtil.swap(queue,j,k); 0{8L^ jB/  
k = j; rvd%z7Z1o  
} CAs:>s '8  
} {Y Y,{H  
private void fixUp(int k) { r@Jy*2[-Jq  
while (k > 1) { 2ag8?#  
int j = k >> 1; ~ ) w4Tq  
if (queue[j]>queue[k]) -rm[.  
break; /"u37f?[^  
SortUtil.swap(queue,j,k); h"0)spF"d  
k = j; &g^*ep~|#  
} +FqE fY4j  
} zhFm2  
(?JdiY/  
} Km%L1Cd]  
*tEqu%N1'  
} :Ez, GAk  
X|eZpIA45  
SortUtil: xLOQu.  
PzNPwd  
package org.rut.util.algorithm; 1nskf*Z  
 sTlel&  
import org.rut.util.algorithm.support.BubbleSort; \'*M }G  
import org.rut.util.algorithm.support.HeapSort; }shxEsq  
import org.rut.util.algorithm.support.ImprovedMergeSort; KbvMp1'9P  
import org.rut.util.algorithm.support.ImprovedQuickSort; eJHh}  
import org.rut.util.algorithm.support.InsertSort; G`>]ng  
import org.rut.util.algorithm.support.MergeSort; Im/tU6ybV  
import org.rut.util.algorithm.support.QuickSort; _J W|3q  
import org.rut.util.algorithm.support.SelectionSort; 'OziP  
import org.rut.util.algorithm.support.ShellSort; oYStf5  
RK|*yt"f"  
/** p .=9[`  
* @author treeroot }>0>OqvF  
* @since 2006-2-2 V\<2oG  
* @version 1.0 CYW@Km{e  
*/ bP 9ly9FH  
public class SortUtil { NSB6 2  
public final static int INSERT = 1; t n5  
public final static int BUBBLE = 2; G!r)N0?_f  
public final static int SELECTION = 3; !ou#g5Q@z  
public final static int SHELL = 4; .=#j dc/  
public final static int QUICK = 5; mSxn7LG  
public final static int IMPROVED_QUICK = 6; U-u?oU-.'  
public final static int MERGE = 7; +)jll#}?  
public final static int IMPROVED_MERGE = 8; UlE%\L0GD&  
public final static int HEAP = 9; rXX>I;`&  
!`Rh2g*o9  
public static void sort(int[] data) { @9gZH_ur>E  
sort(data, IMPROVED_QUICK); vv @m{,7#Y  
} E s5: S#  
private static String[] name={ [fa4  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :/;/mHG]  
}; `NsjtT'_  
`R[ZY!=+  
private static Sort[] impl=new Sort[]{ G-Tmk7m  
new InsertSort(), |/*Pimk  
new BubbleSort(), }6c>BU}DF  
new SelectionSort(), H0Pxw P>q  
new ShellSort(), LSJ?;Zg(=z  
new QuickSort(), tF0jH+7J-  
new ImprovedQuickSort(), lS.Adl^k  
new MergeSort(), u#E'k KGO  
new ImprovedMergeSort(), }9'`3vsJ  
new HeapSort() RwWg:4   
}; 8vY-bm,e  
'jtC#:ePK  
public static String toString(int algorithm){ Ic#xz;elM  
return name[algorithm-1]; bV_nYpo  
} kz"uTJK  
rVYoxXv  
public static void sort(int[] data, int algorithm) { %fqR  
impl[algorithm-1].sort(data); /~[Lr   
} N4!`iS Y  
C9 n%!()>  
public static interface Sort { Wy}I"q[~So  
public void sort(int[] data); iQwQ5m!d &  
} Sjpx G@k  
>gk_klLh  
public static void swap(int[] data, int i, int j) { :S+K\  
int temp = data; |cPHl+$nh.  
data = data[j]; y>^^.  
data[j] = temp; )h!cOEt  
} '$K E= Jy  
} "F<CGSo  
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