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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。 ">-J+ST%  
插入排序: E[IjeJB5  
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package org.rut.util.algorithm.support; 3u&>r-V6Fn  
*?l-:bc]  
import org.rut.util.algorithm.SortUtil; $C&y-Hnar  
/** l*l?aI  
* @author treeroot 3vcKK;qCB  
* @since 2006-2-2 ]x;*Z&  
* @version 1.0 1]DPy+  
*/ Oq[2<ept  
public class InsertSort implements SortUtil.Sort{ cu~dbv6H  
[.ya&E)x  
/* (non-Javadoc) \my5E\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _lK+/"-l  
*/ aRt`IcZYz  
public void sort(int[] data) { !Eqp,"ts7  
int temp; VXfp=JE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F'NX  
} Ah_,5Z@&R  
} 9i^dQV.U=  
} v|]1x2191  
\E}YtN#  
} }3%L3v&  
j'\!p):H  
冒泡排序: f*(W%#*|  
S)n+E\c  
package org.rut.util.algorithm.support; 9Q*T'+V  
DK6^\k][V  
import org.rut.util.algorithm.SortUtil; xAZ-_}'tW  
q3_ceXYU  
/** uT\|jv,  
* @author treeroot {jK:hQX  
* @since 2006-2-2 c3L)!]kB  
* @version 1.0 aAT!$0H  
*/ CC,f*I  
public class BubbleSort implements SortUtil.Sort{ +VE ] .*T  
{ /u}  
/* (non-Javadoc) qD] &&"B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vV(?A  
*/ }=7? & b  
public void sort(int[] data) { T_=IH~"  
int temp; SJ ay  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <SPT2NyX  
if(data[j] SortUtil.swap(data,j,j-1); G (Ky7S Z  
} ! 0}SZ  
} NKyKsu  
} "ZHA.M]`  
} 8.Z9 i  
;z Qrree#  
} $2><4~T;|A  
j0X Jf<  
选择排序: >>>&{>}!  
bF"1M#u:  
package org.rut.util.algorithm.support; &"R`:`XF  
3D2\#6yo  
import org.rut.util.algorithm.SortUtil; aN^x]0P!0  
]YF_c,Q  
/** y\C_HCU H  
* @author treeroot #a$k3C  
* @since 2006-2-2 lx)Bj6  
* @version 1.0 EE,57(  
*/ $~h\`vF&  
public class SelectionSort implements SortUtil.Sort { Vw@?t(l>  
llK7~uOC  
/* uXm_ pQpF  
* (non-Javadoc) %fF0<c^-U  
* N -z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~LG<Uu  
*/ nS` :)#;  
public void sort(int[] data) { ;WP%)Z  
int temp; 8*7,qX  
for (int i = 0; i < data.length; i++) { 57S!X|CE  
int lowIndex = i; d#W>"Cqxqa  
for (int j = data.length - 1; j > i; j--) { xNAa,aMM  
if (data[j] < data[lowIndex]) { \46 'j.  
lowIndex = j; xIb"8,N  
} ->u}b?aF  
} cH7Gb|,M  
SortUtil.swap(data,i,lowIndex);  yh'uH  
} G.B~n>}JU,  
} Mr}K-C?ge  
Z`jSpgWR  
} VUQx"R9-  
"3Lq/mJYnZ  
Shell排序: OMz_xm.UPi  
QI WfGVc-  
package org.rut.util.algorithm.support; EyK F5TP0  
Ia%S=xU{=  
import org.rut.util.algorithm.SortUtil; "BvAiT{u  
2zlBrjk;  
/** i2y E-sgF  
* @author treeroot p_:bt7 B  
* @since 2006-2-2 "0sk(kT  
* @version 1.0 !zR1CM  
*/ 1:j[p=Q&  
public class ShellSort implements SortUtil.Sort{ VX+:C(m~  
MRb6O!$`C  
/* (non-Javadoc) h3YWqSj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?H0"*8C?Y  
*/ 5bHS|<  
public void sort(int[] data) { gY/p\kwsj  
for(int i=data.length/2;i>2;i/=2){ tYzpL   
for(int j=0;j insertSort(data,j,i); 2l.qINyz  
} IPa)+ ZQ  
} qHf8z;lc  
insertSort(data,0,1); y7@q]~%  
} of<(4<T  
Js0hlWu  
/** "74Rn"d5  
* @param data 3o.9}`/  
* @param j @ rG=>??k  
* @param i @@pI>~#zh  
*/ =hq+9 R8=  
private void insertSort(int[] data, int start, int inc) { ?(2^lH~6h  
int temp; Q G8X{'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *,y .%`o  
} _@_w6Rh  
} 'g#EBy  
} H"vy[/UcR  
6_zyPh  
} YkJnZ_k/P  
%1UdG6&J_  
快速排序: tGVC"a  
%kXg|9Bx!  
package org.rut.util.algorithm.support; c-" .VF  
5m\T~[`%  
import org.rut.util.algorithm.SortUtil; ;+NU;f/WM  
fZNWJo# `.  
/** NzAMX+L  
* @author treeroot VPI;{0kh  
* @since 2006-2-2 ^E}};CsT  
* @version 1.0 LmjzH@3  
*/ ;cfmMt!QWJ  
public class QuickSort implements SortUtil.Sort{ aS)Gj?Odf  
NB#-W4NA  
/* (non-Javadoc) syB.Z-Cpd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2)^gd  
*/ Dqg~g|(Q<  
public void sort(int[] data) { G\ m`{jv  
quickSort(data,0,data.length-1); i8+[-mh  
} tO8<N'TD  
private void quickSort(int[] data,int i,int j){ /5&' U!:+  
int pivotIndex=(i+j)/2; SMIr@*R  
file://swap *)82iD  
SortUtil.swap(data,pivotIndex,j); 1 2y+g5b  
:J~sz)n4  
int k=partition(data,i-1,j,data[j]); D)){"Q!b  
SortUtil.swap(data,k,j); uNXKUJ V0  
if((k-i)>1) quickSort(data,i,k-1); R\ZyS )~l  
if((j-k)>1) quickSort(data,k+1,j); $9PscubM4  
gzd)7np B2  
} W"&Y7("y  
/** ITr@;@}c]  
* @param data kr{eC/Q"  
* @param i J{qpGRQNa  
* @param j m)oGeD( !  
* @return G~FAChI8![  
*/ sUTfY|<7|  
private int partition(int[] data, int l, int r,int pivot) { *-lw2M9V  
do{ "&{sE RYY  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); am(jmf::  
SortUtil.swap(data,l,r); ]<g`rR7}  
} A.>L>uR  
while(l SortUtil.swap(data,l,r); ? ht;ZP  
return l; P(Wr[lH\y  
} :I/i"g7<  
U%T{~f  
} bS"zp6Di  
r?:xD(}Q  
改进后的快速排序: kHx6]<  
S{7 R6,B5  
package org.rut.util.algorithm.support; 5FQtlB9F  
DB>.Uf"  
import org.rut.util.algorithm.SortUtil; S*9qpes-m|  
qdY*y&}"J  
/** Udl8?EVSz  
* @author treeroot >xK!J?!K  
* @since 2006-2-2 V0)F/qY  
* @version 1.0 Hy| X>Z  
*/ V^/]h u  
public class ImprovedQuickSort implements SortUtil.Sort { p*OpO&oodu  
<o:|0=Sw b  
private static int MAX_STACK_SIZE=4096; { 2\.  
private static int THRESHOLD=10; `;BpdG(m  
/* (non-Javadoc) MQ7Hn;`B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  OK\F  
*/ MB:*WA&  
public void sort(int[] data) { *@SZ0   
int[] stack=new int[MAX_STACK_SIZE]; Im<(  
wbA<G&h~  
int top=-1; d@#wK~I  
int pivot; /\e&nYz  
int pivotIndex,l,r; 86HK4sES  
`S+B-I0  
stack[++top]=0; @teNT"  
stack[++top]=data.length-1; m%[`NP (  
X J{b_h#N  
while(top>0){ o'auCa,N  
int j=stack[top--]; p"ElO,\  
int i=stack[top--]; ZCuLgCP?Z  
e=#'rDm  
pivotIndex=(i+j)/2; ;f l3'.S[  
pivot=data[pivotIndex]; 2uy<wJE >  
ocDAg<wo  
SortUtil.swap(data,pivotIndex,j); DF`?D +  
| l|7[  
file://partition #[ZNiaWT  
l=i-1; NpN-''B\  
r=j; (yxHXO9N  
do{ %SJ2W>e  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @b5zHXF83E  
SortUtil.swap(data,l,r); RZrQ^tI3"  
} Y24H` s1u/  
while(l SortUtil.swap(data,l,r); OS7^S1r-  
SortUtil.swap(data,l,j); at5>h   
Lj#K^c Ee  
if((l-i)>THRESHOLD){ /hksESiU  
stack[++top]=i; g+  P  
stack[++top]=l-1; 8 O% ?t  
} w4%yCp[,  
if((j-l)>THRESHOLD){ wOU\&u|  
stack[++top]=l+1; fOtzb YVC  
stack[++top]=j; # @~HpqqR  
} qr|v|Ejd~  
@kmOz(  
} 1p }:K`#{  
file://new InsertSort().sort(data); 0kOl,%Ey  
insertSort(data); !,z ==Qp|v  
} N,F$^ q6  
/** s%xhT  
* @param data e_Un:r@)  
*/ @?E|]H!S]  
private void insertSort(int[] data) { B?pNF+?'z  
int temp; T**v!Ls  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <yw(7  
} K|^'`FpPO  
} /@qnEP%  
} 6Qh@lro;y  
U,e'vS{  
} N:nhS3N<L  
$7 FT0?kG  
归并排序: G>>TB{}  
fq,LXQ#G  
package org.rut.util.algorithm.support; `%oJa`  
 5i|DJ6  
import org.rut.util.algorithm.SortUtil; 5wgeA^HE2y  
hiBZZ+^[  
/** G>f2E49BXt  
* @author treeroot XjINRC8^4  
* @since 2006-2-2 >u R0 Xs;V  
* @version 1.0 =QQTHL{3  
*/ %S9YjMR@  
public class MergeSort implements SortUtil.Sort{ 9Impp5`/B  
PTZ/j g@71  
/* (non-Javadoc) <)am]+Lswy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W0_ pO  
*/ ;2\+O"}4H  
public void sort(int[] data) { /.m &rS  
int[] temp=new int[data.length]; 6! .nj3$*  
mergeSort(data,temp,0,data.length-1); bjCO@t  
} >A_:q yGk  
1 |T{RY5  
private void mergeSort(int[] data,int[] temp,int l,int r){ 3I):W9$Qp  
int mid=(l+r)/2; eF=cMC  
if(l==r) return ; IVdM}"+  
mergeSort(data,temp,l,mid); & c V$`L  
mergeSort(data,temp,mid+1,r); , tb\^  
for(int i=l;i<=r;i++){ DITo.PU  
temp=data; Ae[Na:G+  
} g+1&liV  
int i1=l; ~>-MVp  
int i2=mid+1; *JT,]7>  
for(int cur=l;cur<=r;cur++){ Y5,[udF:O  
if(i1==mid+1) ":!7R<t  
data[cur]=temp[i2++]; NcMohpkq  
else if(i2>r) ^T&@(|o  
data[cur]=temp[i1++]; AAW])c`.  
else if(temp[i1] data[cur]=temp[i1++]; [QZ g=."  
else PqDffZ^z  
data[cur]=temp[i2++]; \{u 9Kc  
} =R6IW,*  
} B/F6WQdZ  
P#o"T4 >  
} 56`Tna,t  
1~aP)q  
改进后的归并排序: Vz @2_k   
vmsrypm  
package org.rut.util.algorithm.support; n> tru L  
[~&yLccN  
import org.rut.util.algorithm.SortUtil; ~OSgpM#O!T  
1=U NA :t<  
/** 68 \73L=  
* @author treeroot hI>vz"J  
* @since 2006-2-2 d.3cd40Q  
* @version 1.0 @]F1J  
*/ l.nd Wv  
public class ImprovedMergeSort implements SortUtil.Sort { o7i>D6^^  
5x?YFq6k  
private static final int THRESHOLD = 10; xmXuBp:M(R  
w _ONy9  
/* bo|3sN+D  
* (non-Javadoc) xm$-:N0q  
* 9Rd& Jq^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UI%Z`.&  
*/ a2%xW_e  
public void sort(int[] data) { M)6iYA%$  
int[] temp=new int[data.length]; B9(@ .  
mergeSort(data,temp,0,data.length-1); D`NPU  
} A2 9R5  
zN3b`K. i  
private void mergeSort(int[] data, int[] temp, int l, int r) { L'L[Vpx  
int i, j, k; !YVGT <  
int mid = (l + r) / 2; !fmbm4!a  
if (l == r) j/p1/sJ[y  
return; ,[UK32KWI  
if ((mid - l) >= THRESHOLD) xNOArb5e5  
mergeSort(data, temp, l, mid); a${<~M hm  
else ^g SZzJ5  
insertSort(data, l, mid - l + 1);  $+  
if ((r - mid) > THRESHOLD) i9koh3R\  
mergeSort(data, temp, mid + 1, r); 'B\7P*L"p  
else f Hd|tl  
insertSort(data, mid + 1, r - mid); vN9R. R  
cMK}BHOC  
for (i = l; i <= mid; i++) { U-U"RC>  
temp = data; /P%OXn$i/  
} 5_7y1  
for (j = 1; j <= r - mid; j++) { Aw$+Ew[8 2  
temp[r - j + 1] = data[j + mid]; ~J:]cy)Q  
} cw"Ou%  
int a = temp[l]; B? Z_~Bf&  
int b = temp[r]; 9T#${NK  
for (i = l, j = r, k = l; k <= r; k++) { %EH{p@nM&-  
if (a < b) { ~YRG9TK  
data[k] = temp[i++]; oH='\M%+  
a = temp; zQ~ax!}R  
} else { Ms 3Sri  
data[k] = temp[j--]; u*=8s5Q[  
b = temp[j];  <BiSx  
} V| &->9"  
} Ji)Ys ebV  
} c> 0R_  
3 63KU@`  
/** aY-7K._</  
* @param data )_olJCdaP^  
* @param l p|+TgOYOc  
* @param i $W]}m"l  
*/ ")YD~ZA%)  
private void insertSort(int[] data, int start, int len) { ey@ccc*sZ9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]{| wU.  
} |/;;uK,y  
} p1N3AhXY  
} bRD-[)  
} )uu(I5St  
Ge7Uety  
堆排序: Nsn~mY%  
cq0-D d9^&  
package org.rut.util.algorithm.support; H~ E<ek'~  
%<0'xJ%%Q  
import org.rut.util.algorithm.SortUtil; [\3W_jR  
|Kb m74Z%  
/** FBxg^g%PB@  
* @author treeroot t0_4jV t  
* @since 2006-2-2 $p|Im,  
* @version 1.0 ^Na3VP  
*/ M}e}3w  
public class HeapSort implements SortUtil.Sort{ '*B%&QC-  
ON9L+"vqv0  
/* (non-Javadoc) o~7D=d?R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tq?7-_MLC$  
*/ 5=#2@qp  
public void sort(int[] data) { $5:I~ -mx  
MaxHeap h=new MaxHeap(); FsLd&$?T&  
h.init(data); GL%)s?   
for(int i=0;i h.remove(); h S)lQl:^  
System.arraycopy(h.queue,1,data,0,data.length); 2]]}Xvx4#  
} U"RA*|  
-AN5LE9-  
private static class MaxHeap{ GkpYf~\Q  
n^|SN9 _r  
void init(int[] data){ l >~Rzw  
this.queue=new int[data.length+1]; ^8KxU  
for(int i=0;i queue[++size]=data;  SQ&}18Z~  
fixUp(size); iU RSYR  
} m Uy>w  
} d uP0US  
NvC @  
private int size=0; $zM \Jd  
=~k}XB  
private int[] queue; ~b @"ir+g4  
pg Q^w0BQV  
public int get() { A4g,)  
return queue[1]; .W\JvPTC  
} Y-lwS-Ii  
OLo?=1&;;  
public void remove() { n&,X ']z.  
SortUtil.swap(queue,1,size--); aJ@lT&.  
fixDown(1); jx{ fel  
} rJh$>V+ '  
file://fixdown d_!}9  
private void fixDown(int k) { CaV@<T  
int j; +p[O|[z  
while ((j = k << 1) <= size) { 5=\^DeM@ H  
if (j < size %26amp;%26amp; queue[j] j++; <0;G4fE7[H  
if (queue[k]>queue[j]) file://不用交换 _0BQnzC=  
break; 4V c``Um  
SortUtil.swap(queue,j,k); O`$\P lt|v  
k = j; j\"d/{7Q  
} Lr 9E02  
} k<x7\T  
private void fixUp(int k) { 1B gHkDW  
while (k > 1) { H_,4N_hL  
int j = k >> 1; B2Rpd &[  
if (queue[j]>queue[k]) fw VI%0C@  
break; "!_vQ^y  
SortUtil.swap(queue,j,k); R;pIi/yDRe  
k = j; BNe>Lko  
} ~^'WHuz Py  
} U{qwhz(  
^q`RaX)  
} /;vHAtt;f  
-BSO$'{7  
} b6xz\zCL  
X,c`,B03  
SortUtil: "_2;+@+  
M)U)Sc zHO  
package org.rut.util.algorithm; (>,b5g  
(&u'S+  
import org.rut.util.algorithm.support.BubbleSort; C\Z5%2<Z  
import org.rut.util.algorithm.support.HeapSort;  [aG   
import org.rut.util.algorithm.support.ImprovedMergeSort; 4T$DQK@e  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2a;[2':  
import org.rut.util.algorithm.support.InsertSort; 'v@*xF/L6a  
import org.rut.util.algorithm.support.MergeSort; O\gVB!x  
import org.rut.util.algorithm.support.QuickSort; 6Eus_aP  
import org.rut.util.algorithm.support.SelectionSort; jcjl q-x  
import org.rut.util.algorithm.support.ShellSort; 7{l~\] 6d  
C4GkFD   
/** r i)`e  
* @author treeroot @iMF&\KC  
* @since 2006-2-2 # 2FrP5rC  
* @version 1.0 0fLd7*1>  
*/ -knP5"TB  
public class SortUtil { =Ot_P7'5gv  
public final static int INSERT = 1; K"hnGYt?  
public final static int BUBBLE = 2; 4'tY1 d  
public final static int SELECTION = 3; ]omBq<ox'Y  
public final static int SHELL = 4; 'vYt_T  
public final static int QUICK = 5; !]5V{3  
public final static int IMPROVED_QUICK = 6; 17`-eDd  
public final static int MERGE = 7; M`8c|*G   
public final static int IMPROVED_MERGE = 8; hd,O/-m#  
public final static int HEAP = 9;  4CtWEq  
u?rX:KkS  
public static void sort(int[] data) { fdHFSnQ g  
sort(data, IMPROVED_QUICK); ~]`U)Aw  
} d(:I~m  
private static String[] name={ m>3\1`ZF~<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" o?c NH  
}; vR>GE? s6  
eKLE^`2*@  
private static Sort[] impl=new Sort[]{ l_8ibLyo  
new InsertSort(), F@#p  
new BubbleSort(), .XVL JJ#  
new SelectionSort(), 4#.Q|vyl]"  
new ShellSort(), mg>wv[ 7  
new QuickSort(), P!IXcPKW53  
new ImprovedQuickSort(), 2aX{r/Lc  
new MergeSort(), )=bW\=[8  
new ImprovedMergeSort(),  (^B=>  
new HeapSort() ?>I  
}; V6h8+|hK  
ks %arm&  
public static String toString(int algorithm){ :t;i2Ck  
return name[algorithm-1]; -3y  
} V#+F*w?&D  
VS!v7-_N5  
public static void sort(int[] data, int algorithm) { I~Qi):&x  
impl[algorithm-1].sort(data); c4r9k-w0E  
} 1~},}S]id  
OF )*kiJ  
public static interface Sort { [Q\(k d*4  
public void sort(int[] data); 3xmPY.  
} `I4E': ZG  
P2 qC[1hYH  
public static void swap(int[] data, int i, int j) { *cCj*Zr]  
int temp = data; kY6_n4  
data = data[j]; 'cAS>s"$}V  
data[j] = temp; ;j[:tt\k  
} 5R%y3::$S  
} +EqL|  
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