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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。 -Vg0J6x  
插入排序: _#P5j#  
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package org.rut.util.algorithm.support; b;mpZ|T.  
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import org.rut.util.algorithm.SortUtil; gd31ds!G  
/** ,qgR+]?({  
* @author treeroot [S`Fm>,  
* @since 2006-2-2 5FNf)F   
* @version 1.0 ^&c|z35F  
*/ Zq}Cl'f  
public class InsertSort implements SortUtil.Sort{ <l9qhqHv&  
7 Uu  
/* (non-Javadoc) t9 id^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }<P%W~  
*/ DGAg#jh  
public void sort(int[] data) { ? v@q&  
int temp; *UG=dl#F#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a<D]Gz^h  
} WgV[,(  
} E"H> [E  
} <J1$s_^`  
TlBu3z'P  
} KI<Vvc m  
;%i.@@:IQ  
冒泡排序: Vuo 8[h>  
W&k2z,|  
package org.rut.util.algorithm.support; P\|i<Ds_M  
h@ ?BA<'S  
import org.rut.util.algorithm.SortUtil; F a'2i<  
POUD*(DqNK  
/** .mS'c#~5Y  
* @author treeroot nxYp9,c"  
* @since 2006-2-2 x~O_v  
* @version 1.0 kIUb`b>B  
*/ Os7 3u#!'  
public class BubbleSort implements SortUtil.Sort{ s%qK<U4@;Q  
_\xd]~ELj  
/* (non-Javadoc) VlFDMw.4.+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z,Tv8;  
*/ B\!.o=<h  
public void sort(int[] data) { 9Lxj ]W2^  
int temp; Q|}Pc>ae  
for(int i=0;i for(int j=data.length-1;j>i;j--){ e6?h4}[+*  
if(data[j] SortUtil.swap(data,j,j-1); nM)H2'%kL&  
} s*j0uAq)up  
} vl}uHdeP9  
} #G ZGk?  
} FPPGf!Eq  
FVcoo V  
} G" Fd]'  
ojitBo~  
选择排序: BqKh&m  
U= PG0  
package org.rut.util.algorithm.support; Gv}h/zu-  
3E361?ubM  
import org.rut.util.algorithm.SortUtil; Ci ? +Sl  
r'q9N  
/** obE_`u l#  
* @author treeroot ~T[m{8uh  
* @since 2006-2-2 [sY>ac  
* @version 1.0 hQfxz,X  
*/ r`L$[C5I  
public class SelectionSort implements SortUtil.Sort { rX#} 2  
 :RW0<  
/* d(L u|/~  
* (non-Javadoc) n'JwT! A  
* l~M86 h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  3y?ig2  
*/ eID"&SSU  
public void sort(int[] data) { M+ gYKPP  
int temp; 0Kjm:x9T  
for (int i = 0; i < data.length; i++) { NTVdSK7z~H  
int lowIndex = i; eRa1eR gP  
for (int j = data.length - 1; j > i; j--) { |T9p#) ec2  
if (data[j] < data[lowIndex]) { '@iS5Fni  
lowIndex = j; SL/ FMYdd  
} >w?O?&Q$  
} ht S5<+Y  
SortUtil.swap(data,i,lowIndex); &Fl^&&1C  
} G~e`O,+  
} ;ePmN|rq;  
mMw&{7b:  
} AtA}OY]D /  
HQ+:0" B  
Shell排序: UGPD5wX?  
_~DFZt@T  
package org.rut.util.algorithm.support; kG+CT  
@`?"#^jT  
import org.rut.util.algorithm.SortUtil; ;#!`c gAh  
lFD$ Mc  
/** ~'HwNzDQc  
* @author treeroot ^m{kn8  
* @since 2006-2-2 !+T+BFw.  
* @version 1.0 |_%|  
*/ xUzSS@ot^  
public class ShellSort implements SortUtil.Sort{ #:3E.=  
59p'Ega.  
/* (non-Javadoc) 5sx-u!7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pWB)N7x&  
*/ l0b Y  
public void sort(int[] data) { >'8.>f  
for(int i=data.length/2;i>2;i/=2){ 1DGVAIcD  
for(int j=0;j insertSort(data,j,i); ~/h P6*  
} Ni GK| Z   
} 1z$;>+g<  
insertSort(data,0,1); >0SF79-RE  
} h]c-x(+  
>ea<6&!Ee  
/** ~-6Kl3Y  
* @param data A[!Fg0X0  
* @param j 7+j@0v\  
* @param i RIM"MR9qe=  
*/ I, .`w/I+  
private void insertSort(int[] data, int start, int inc) { 9+SeG\Th  
int temp; C 9,p-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);  vu  YH+  
} t4UKG&[a  
} iR(A ^  
} '\ dFhYs{*  
NJ 7N*   
} ![:S~x1  
q=}Lm;r  
快速排序: ALwkX"AN  
*n2Q_o  
package org.rut.util.algorithm.support; GOa](oD}  
~c :e0}  
import org.rut.util.algorithm.SortUtil; F)Yn1&a#H  
xK0VWi  
/** OHqLMBW!!  
* @author treeroot gV!Eotq  
* @since 2006-2-2 mhp5}  
* @version 1.0 <0R7uH  
*/ ?'$=G4y&?  
public class QuickSort implements SortUtil.Sort{ E[6JHBE*r  
/%rbXrR4w  
/* (non-Javadoc) x"v5'EpL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i3*?fMxhu)  
*/ Wb!%_1dER  
public void sort(int[] data) { `t:7&$>T  
quickSort(data,0,data.length-1); T2} I,{U  
} <i~ ( 8F\  
private void quickSort(int[] data,int i,int j){ <h U ZD;  
int pivotIndex=(i+j)/2; U{LDtn%@h6  
file://swap 9.lSF  
SortUtil.swap(data,pivotIndex,j); x-U:T.+{  
]<4Yor}t{;  
int k=partition(data,i-1,j,data[j]); /[GOs*{zB  
SortUtil.swap(data,k,j); f3V&i)w(  
if((k-i)>1) quickSort(data,i,k-1); z>&Py(  
if((j-k)>1) quickSort(data,k+1,j); #:vosVqG  
WMZa6cH  
} =q^o6{d0"  
/** W2yNEiH  
* @param data %7O`]ik:  
* @param i LlRvm/  
* @param j jY:(Tv3~  
* @return ~DPg):cZ  
*/ {j,bV6X  
private int partition(int[] data, int l, int r,int pivot) { 2ADUJ  
do{ bI@+Or  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W]_+3qvZ  
SortUtil.swap(data,l,r); LZM[Wg#  
} Z,,Da|edH  
while(l SortUtil.swap(data,l,r); BYVp~!u  
return l; ZHICpL  
} xh @H@Q\  
?9v!UT&#  
} zScV 9,H1  
h^~eTi;c]Q  
改进后的快速排序: Otn,(j;u  
k^]+I% ?Q  
package org.rut.util.algorithm.support; T6Ue\Sp'  
_xAdvr' W  
import org.rut.util.algorithm.SortUtil; @p|[7'  
l8GziM{lp  
/** ^P:9iu)+]~  
* @author treeroot `\q4z-<-  
* @since 2006-2-2 .-`7Av+7  
* @version 1.0 Rr4r[g#  
*/ vV#Jl) A  
public class ImprovedQuickSort implements SortUtil.Sort { Z=R>7~H  
(~}yt.7K  
private static int MAX_STACK_SIZE=4096; =d7lrx+z  
private static int THRESHOLD=10; zBB4lC{q  
/* (non-Javadoc) "KW\:uc /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &>@nW!n u  
*/ /%Rz`}  
public void sort(int[] data) { g*- K!X6l  
int[] stack=new int[MAX_STACK_SIZE]; z mrk`o~  
=:6Y<ftC  
int top=-1; &]pW##  
int pivot; TxN#3m?G  
int pivotIndex,l,r; @XDU !<N  
;TMH.E,h:  
stack[++top]=0; R7x4v  
stack[++top]=data.length-1; `8xe2=Ub  
6rt.ec(  
while(top>0){ eAu3,qoM  
int j=stack[top--]; rNfua   
int i=stack[top--]; 3r+vpyu  
=o{zw+|% %  
pivotIndex=(i+j)/2; ',kYZay  
pivot=data[pivotIndex]; vj[ .`fY  
$62ospR^Y  
SortUtil.swap(data,pivotIndex,j); 9j:?s;B  
GZXUB0W\@)  
file://partition l K}('7\  
l=i-1; H`),PY2  
r=j; _ 97F  
do{ l]T|QhiVd  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ZaH<\`=%  
SortUtil.swap(data,l,r); Q++lgVh)E  
} K$ #(\-M  
while(l SortUtil.swap(data,l,r); 1xL2f&bG  
SortUtil.swap(data,l,j); RQ9fA1YP  
JT[|l-\zo  
if((l-i)>THRESHOLD){ %Ni)^   
stack[++top]=i; i?qS8h{  
stack[++top]=l-1; 9d#-;qV  
} HR\yJt  
if((j-l)>THRESHOLD){ *vCJTz  
stack[++top]=l+1; E:&=A 4 %  
stack[++top]=j; .FqbX5\p,  
} !wJ~p:vRdY  
2[r#y1ro  
} k U*\Fa*E  
file://new InsertSort().sort(data); 1W$@ V!  
insertSort(data); 8!b#ez   
} 8g(%6 ET  
/** d01bt$8>  
* @param data c/x ^I{b*  
*/ t$]lK6  
private void insertSort(int[] data) { |M)'@s:  
int temp; Wl;F]_|*(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _+ oX9  
} nI|jUD +y  
} ]hS4'9lD  
} db@i*Bf  
h.sH:]Z  
} o" &7$pAh  
XlV#)JX  
归并排序: lDCoYX_  
LUHj3H  
package org.rut.util.algorithm.support; =>)l6**UE  
dF5EIPl;J  
import org.rut.util.algorithm.SortUtil; TW{.qed8^  
BV9B}IV  
/** \P^WUWY  
* @author treeroot eqZ V/a  
* @since 2006-2-2 #=OKY@z/  
* @version 1.0 :nC Gqg  
*/ xl5mI~n_~  
public class MergeSort implements SortUtil.Sort{ |@sUN:G4k  
CS:j->  
/* (non-Javadoc) k9 .@S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 52C>f6w  
*/ `rbTB3?  
public void sort(int[] data) { 7xO =:*  
int[] temp=new int[data.length]; P"XF|*^U  
mergeSort(data,temp,0,data.length-1); i"0^Gr  
} % E3  
(Z,v)TOXjV  
private void mergeSort(int[] data,int[] temp,int l,int r){ t*NZ@)>  
int mid=(l+r)/2; w;&J._J  
if(l==r) return ; GXYmJ4wR  
mergeSort(data,temp,l,mid); DJS0;!# |O  
mergeSort(data,temp,mid+1,r); ;Lu%v%BM  
for(int i=l;i<=r;i++){ x5.H dKV  
temp=data; pBL,kqYNA>  
} ^Q pP'  
int i1=l; 2h IM!wQ  
int i2=mid+1; i,8h B(M!  
for(int cur=l;cur<=r;cur++){ ;8'hvc3i$  
if(i1==mid+1) B~D{p t3y  
data[cur]=temp[i2++]; A Ns.`S  
else if(i2>r) 4fT,/[k?  
data[cur]=temp[i1++]; JLT10c3  
else if(temp[i1] data[cur]=temp[i1++]; I ^?TabL  
else Z[)t34EY"  
data[cur]=temp[i2++]; $k,Z)2  
} Ckj2$c~  
} ~-.}]N+([  
t:eZ`6o$T\  
} I+ rHb< P%  
5@ %$M$E  
改进后的归并排序: MT [V1I{LV  
IGV@tI  
package org.rut.util.algorithm.support; ?w#V<3=  
^vn8s~#  
import org.rut.util.algorithm.SortUtil; yS[:C 2v  
6y)TXp  
/** 47|Lk]+O  
* @author treeroot n;@PaE^8=  
* @since 2006-2-2 s )POtJ<  
* @version 1.0 + 0{m(%i  
*/ Qj.]I0d  
public class ImprovedMergeSort implements SortUtil.Sort { MCZTeYnx  
!g  #  
private static final int THRESHOLD = 10; jV2L;APCq  
:1^ R$0d  
/* LBq~?Q.e  
* (non-Javadoc) 3k.{gAZKh  
* )a AKO`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |]1-ck!  
*/ ]P;uQ!  
public void sort(int[] data) { i,r O3J n  
int[] temp=new int[data.length]; z#ab V1 Xi  
mergeSort(data,temp,0,data.length-1); P"Lk(gY  
} wzVx16Rvc  
Jz&a9  
private void mergeSort(int[] data, int[] temp, int l, int r) { Cc/h|4  
int i, j, k; [=7=zV;}4  
int mid = (l + r) / 2; 2BZYC5jy  
if (l == r) PIR#M('  
return; VG0Ty;bV  
if ((mid - l) >= THRESHOLD) O-J;iX}  
mergeSort(data, temp, l, mid); b`){f\#t  
else K1>X%f^  
insertSort(data, l, mid - l + 1); 5\gL+ qM0  
if ((r - mid) > THRESHOLD) GqMa|8j  
mergeSort(data, temp, mid + 1, r); c7UmR?m  
else V T8PV5z  
insertSort(data, mid + 1, r - mid); ?oana%  
gqV66xmJ3  
for (i = l; i <= mid; i++) { *oopdGue  
temp = data; ZUePHI-dP  
} Q97F5ru6  
for (j = 1; j <= r - mid; j++) { " !F)K  
temp[r - j + 1] = data[j + mid]; 'n4Ro|kA  
} 'w3BSaJi  
int a = temp[l]; $0$'co"  
int b = temp[r]; B~+3<#B  
for (i = l, j = r, k = l; k <= r; k++) { +Z> Y//  
if (a < b) { =r"-Pm{  
data[k] = temp[i++]; &|yQwNA*a"  
a = temp; *j5>2-C &  
} else { TRP#b 7nC  
data[k] = temp[j--]; q.0Evr:  
b = temp[j]; !~Vo'ykwx'  
} 4<}!+X7m  
} > %h7)}U  
} % `Q[?(z  
}<R,)ZV^G  
/** iO1ir+B\  
* @param data ;;e\"%}@=q  
* @param l \d"JYym  
* @param i h1}U#XV  
*/ R=&9M4  
private void insertSort(int[] data, int start, int len) { p7et>;WRx  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =1Nz* c  
}  lS@0 $  
} MDV<[${   
} ?YE'J~0A6  
} -#<6  
W>f q 9  
堆排序: \9"   
s?Lx\?T  
package org.rut.util.algorithm.support; >QyJRMY  
21NGsG  
import org.rut.util.algorithm.SortUtil; paKur%2u  
0RHKzk6~c  
/** `9;0Y  
* @author treeroot ],`xd_=]=  
* @since 2006-2-2 7egE."  
* @version 1.0 aa|u *afWQ  
*/ UWU(6J|Fk  
public class HeapSort implements SortUtil.Sort{ q4u,pm,@  
m=Mb'<  
/* (non-Javadoc) (V&5EO8)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o>|&k]W/  
*/ g)?Ol  
public void sort(int[] data) { ba5,?FVI~  
MaxHeap h=new MaxHeap(); o\/&05rp]  
h.init(data);  NOY`1i  
for(int i=0;i h.remove(); k=]#)A(#C  
System.arraycopy(h.queue,1,data,0,data.length); -M]B;[^  
} $Lj~ge3#  
~6{iQZa1Y  
private static class MaxHeap{ Fl0(n #L  
?'_Ty`vT  
void init(int[] data){ Cws;6i*=@  
this.queue=new int[data.length+1]; s!k7Wwj  
for(int i=0;i queue[++size]=data; \r %y^G  
fixUp(size); d]A.=NAc  
} u<L<o 2  
} Sg%h}]~   
JJ:pA_uX  
private int size=0; SjosbdD  
Vz.G!*>Dg  
private int[] queue; _V2^0CZ  
Eep~3U  
public int get() { m:}PVJ-"  
return queue[1]; m}UcF oaO  
} [^Z)f<l  
Xr:gm`[  
public void remove() { u+/Uc:XK)  
SortUtil.swap(queue,1,size--); {c  : 7:  
fixDown(1); 6a*?m{  
} J\@|c.ws  
file://fixdown 'FNnFm  
private void fixDown(int k) { $-D}y:  
int j; Yg /g9$'  
while ((j = k << 1) <= size) { (rmOv\hG9V  
if (j < size %26amp;%26amp; queue[j] j++; }VU^ 8D  
if (queue[k]>queue[j]) file://不用交换 C/$bgK[ev  
break; s5bqS'%  
SortUtil.swap(queue,j,k); 3_bE12  
k = j; ZLjEH7  
} X<%`  
} K}t=Y  
private void fixUp(int k) { agV z  
while (k > 1) { RWg'W,v=!  
int j = k >> 1; /^]/ iTg  
if (queue[j]>queue[k]) Ux,?\Vd  
break; sYEh>%mo^C  
SortUtil.swap(queue,j,k); 8Y]% S9.  
k = j; qX[{_$^Q  
} Y/x>wNW  
} pV8_i7\  
nND; lVQSO  
} Z~0TO-Q  
`uKsFX M  
} vjL +fH<0:  
!>:SPt l  
SortUtil: _<E.?K$gbU  
ZZ>"LH  
package org.rut.util.algorithm; {|d28!8w  
M(^_/ 1Z  
import org.rut.util.algorithm.support.BubbleSort; 9 NGKh3V  
import org.rut.util.algorithm.support.HeapSort; U{\9mt7b!  
import org.rut.util.algorithm.support.ImprovedMergeSort; )/t&a$[  
import org.rut.util.algorithm.support.ImprovedQuickSort; (*M*muk  
import org.rut.util.algorithm.support.InsertSort; .5"s[(S  
import org.rut.util.algorithm.support.MergeSort; .FN;3HU  
import org.rut.util.algorithm.support.QuickSort; &SG5 f[  
import org.rut.util.algorithm.support.SelectionSort; >'lvZt  
import org.rut.util.algorithm.support.ShellSort; xfF;u9$;  
wBWqibY|  
/** pCf9"LLer  
* @author treeroot "ejsz&n  
* @since 2006-2-2 )3 I~6ar  
* @version 1.0 ?8w5tfN6t  
*/ `h|Y0x  
public class SortUtil { cP",szcY  
public final static int INSERT = 1; Dm@h'*  
public final static int BUBBLE = 2; Z0/$XS9|h;  
public final static int SELECTION = 3; |KR8=-!7  
public final static int SHELL = 4; fsl ZJE  
public final static int QUICK = 5; ~.tl7wKkR/  
public final static int IMPROVED_QUICK = 6; \.aKxj5  
public final static int MERGE = 7; csd9[=HW/Q  
public final static int IMPROVED_MERGE = 8; {Rdh4ZKh  
public final static int HEAP = 9; =@nE:uto]  
5DpvMhc_  
public static void sort(int[] data) { !kG|BJ$j  
sort(data, IMPROVED_QUICK); naro  
} }S$OE))u  
private static String[] name={ YV8PybThc  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #bJp)&LO  
}; .=)[S5.BVq  
abAw#XQ8  
private static Sort[] impl=new Sort[]{ RWRqu }a  
new InsertSort(), 1V wcJd  
new BubbleSort(), W ]$/qyc&J  
new SelectionSort(), .Y|wG<E  
new ShellSort(), n0LNAhM  
new QuickSort(), h<Ct[46,S  
new ImprovedQuickSort(), ? 'qyI^m@  
new MergeSort(), v, CWE  
new ImprovedMergeSort(), xk  
new HeapSort() `W>Sss  
}; TCFr-*x  
(q0vql  
public static String toString(int algorithm){ \11+~  
return name[algorithm-1]; f|=u{6  
} {!j)j6(NY  
L PS,\+  
public static void sort(int[] data, int algorithm) { S&'?L0  
impl[algorithm-1].sort(data); !PA><F  
} d-C%R9  
;[79Ewd#$  
public static interface Sort { -dWg1`;  
public void sort(int[] data); diNAT`|?#  
} .p]r S =#  
Dpwqg3,  
public static void swap(int[] data, int i, int j) { #K`0b$  
int temp = data; V%{WH}  
data = data[j]; ek.@ 0c  
data[j] = temp; rq^%)tR  
} =k*XGbU  
} mr2Mu  
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