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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。 *~U.36  
插入排序: /4 pYhJ8S  
lqL5V"2Y  
package org.rut.util.algorithm.support;  ArAe=m!u  
@YH>|{S&  
import org.rut.util.algorithm.SortUtil; 4_j_!QH87  
/** [#Gu?L_W  
* @author treeroot *K$a;2WjzG  
* @since 2006-2-2 qg`ae  
* @version 1.0 bF_0',W  
*/ !h7:rv/  
public class InsertSort implements SortUtil.Sort{ *qSvSY*  
OhCdBO  
/* (non-Javadoc) \9#f:8Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +[uh);vD`G  
*/ JluA?B7E  
public void sort(int[] data) { Tr:@Dv.O  
int temp; oYf+I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a BMV6'  
} 5Wa)_@qI)`  
} \M@IKE  
} 2 SD Z  
Nh^I{%.x  
} !9$}1_,is  
db_?da;!`  
冒泡排序: HP[B%  
{-me;ayk  
package org.rut.util.algorithm.support; O4oN)  
'R+^+urq^  
import org.rut.util.algorithm.SortUtil; VpHwc!APq  
e\[q3J  
/** b' M"To@  
* @author treeroot 2INpo  
* @since 2006-2-2 ,pTZ/#vP#  
* @version 1.0 9ETdO,L)f  
*/ Y#V(CIDe  
public class BubbleSort implements SortUtil.Sort{ x+6z9{O  
urx?p^c  
/* (non-Javadoc) J9 NuqV3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #'%ii,;w Q  
*/ vjm? X  
public void sort(int[] data) { ,JK0N_=  
int temp; a1I-d=]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~Uv#)  
if(data[j] SortUtil.swap(data,j,j-1); LsIZeL^  
} !BkE-9v?w  
} }DjVZ48  
} !\%JOf}  
} $+4 4US  
13v`rK`7o  
} .Er+*j;&w  
1/:vFX  
选择排序: DKMkCPX%  
P8dMfD*"E  
package org.rut.util.algorithm.support; s,[ I_IiPf  
RbxQTM_:M  
import org.rut.util.algorithm.SortUtil; e> 9X  
-th.(eAx  
/** CckfoJ 9  
* @author treeroot ]rY9t@  
* @since 2006-2-2 'G % ]/'_U  
* @version 1.0 cW0\f5[/  
*/ <#M1I!R  
public class SelectionSort implements SortUtil.Sort { dba_(I~y  
<BBzv-?D  
/* lc5(^ ~  
* (non-Javadoc) oP56f"BE(  
* !L9|iC:8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^vG<Ma.yk  
*/ C7m/<  
public void sort(int[] data) { (NR( )2  
int temp;  }E(w@&  
for (int i = 0; i < data.length; i++) { (_}q>3  
int lowIndex = i; %{r3"Q=;W  
for (int j = data.length - 1; j > i; j--) { DUu:et&c1  
if (data[j] < data[lowIndex]) { C,> n  
lowIndex = j; oupWzjo  
} yxpv;v:)=  
} ,|\\C6s  
SortUtil.swap(data,i,lowIndex); `g1?Q4h  
} BRu}"29  
} BWYv.&=(  
m2(}$z3e  
} wY\,b*x  
dI7rx+L  
Shell排序: ke W7pN?  
7)#JrpTj%  
package org.rut.util.algorithm.support; #| g h  
pd:YR;  
import org.rut.util.algorithm.SortUtil; lj&\F|-i  
vYXhWqL~  
/** RLQ*&[A}  
* @author treeroot OMjPC_  
* @since 2006-2-2 Zi}h\R a  
* @version 1.0 AtHkz|sl  
*/ o?M;f\Fy  
public class ShellSort implements SortUtil.Sort{ ; t9_*)[  
Y}.f&rLe  
/* (non-Javadoc) oaq,4FT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &I'J4gk[  
*/ K9&Q@3V  
public void sort(int[] data) { FPK=Tr:b  
for(int i=data.length/2;i>2;i/=2){ F)eP55C6  
for(int j=0;j insertSort(data,j,i); =m (u=|N3  
} 0k\,z(e  
} kP('X/  
insertSort(data,0,1); tuwlsBV  
} 'NjeF&#6  
#G0'Q2  
/** ~0-)S@  
* @param data =(TMcu$4`  
* @param j 7vPG b:y  
* @param i .HY,'oC.  
*/ #Cs/.(<  
private void insertSort(int[] data, int start, int inc) { c%b|+4 }x  
int temp; 7],y(:[=v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :f7!?^;y>  
} u"hr4+/  
} RJDk7{(  
} Txe*$T,(  
t6 -fG/Kc  
} SufM ~9Ll  
U5cbO{\ 3I  
快速排序: 0;`FS /[(f  
o%lxEd r  
package org.rut.util.algorithm.support; 3My}u>  
j<Pw0?~s6  
import org.rut.util.algorithm.SortUtil; yNwSiZE X  
Xs$a^zZ  
/** 5'{QMnfB  
* @author treeroot ^e]O >CJ  
* @since 2006-2-2 e9:pS WA-n  
* @version 1.0 Rd;t}E$  
*/ PW"?* ~&  
public class QuickSort implements SortUtil.Sort{ 8VG~n?y  
G;/> N'#  
/* (non-Javadoc) +[ir7?Y.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5HbJE'  
*/ 8?<J,zu@AV  
public void sort(int[] data) { zJ1M$ U  
quickSort(data,0,data.length-1); c@]G;>o  
} D2 o|.e<r  
private void quickSort(int[] data,int i,int j){ XD!}uDZ^  
int pivotIndex=(i+j)/2; W95q1f# 7  
file://swap 7}c[GC)F  
SortUtil.swap(data,pivotIndex,j); %O[1yZh \  
(C`nBiL<  
int k=partition(data,i-1,j,data[j]); %t9Kc9u3p  
SortUtil.swap(data,k,j); +",`Mb  
if((k-i)>1) quickSort(data,i,k-1); 2|RxowXZ"  
if((j-k)>1) quickSort(data,k+1,j); +W-b3R:1>  
?0z/i^I  
} _m a;b<I/<  
/** gLo&~|=L-  
* @param data _Y6Ezh.  
* @param i eo!+UFZbY  
* @param j %M^Q{` :5  
* @return Ym -U{a  
*/ rniL+/-uU  
private int partition(int[] data, int l, int r,int pivot) { TOq xl  
do{ p!Tac%D+k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~Lu,jLKL=[  
SortUtil.swap(data,l,r); e+2lus,u6t  
} ~<Wa$~oY  
while(l SortUtil.swap(data,l,r); R*ex!u60M  
return l; I(j{D>v  
} l.}gWN9-  
-biw{  
} /@&uaw  
=3V4HQi  
改进后的快速排序: v )2yR~J  
{JKG-0)z?  
package org.rut.util.algorithm.support; oOXJ7 |n  
f e^s`dsG  
import org.rut.util.algorithm.SortUtil; = K`]cEL  
K6~')9 Q  
/** DEfhR?v  
* @author treeroot >E,/|K*  
* @since 2006-2-2 n|QA\,=  
* @version 1.0 Cf<TDjU`|  
*/ xw1,Wbu]  
public class ImprovedQuickSort implements SortUtil.Sort { EW)r/Av:,  
cZWW[i  
private static int MAX_STACK_SIZE=4096; 4l/~::y  
private static int THRESHOLD=10; <X97W\  
/* (non-Javadoc) +@@( C9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5':j=KQE_  
*/ <P Vmr2Jp"  
public void sort(int[] data) { q}g0-Da  
int[] stack=new int[MAX_STACK_SIZE]; VF7H0XR/k5  
>M m.MNU  
int top=-1; 3] U/^f3  
int pivot; %uP/v\l  
int pivotIndex,l,r; TUp%Cx  
]@}@G[e#[  
stack[++top]=0; &(x>J:b  
stack[++top]=data.length-1; sJg3WN  
p1z^i(  
while(top>0){ ,~K4+ t_  
int j=stack[top--]; k.Z?BNP  
int i=stack[top--]; !) d  
cZt5;"xgr]  
pivotIndex=(i+j)/2; Au )%w  
pivot=data[pivotIndex]; 4tapQgj24  
G6"4JTWO  
SortUtil.swap(data,pivotIndex,j); ]zvOM^l~  
T?-K}PUcQ  
file://partition ; Oz p  
l=i-1; <%`z:G3  
r=j; P[ Vf$ q<  
do{ bXHtw} n  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :{xu_"nYr  
SortUtil.swap(data,l,r); 1<M~ #  
} ]b^bc2:  
while(l SortUtil.swap(data,l,r); %NL7XU[~  
SortUtil.swap(data,l,j); P\ 2Bx *e  
VF"c}  
if((l-i)>THRESHOLD){ #Pq6q.UB  
stack[++top]=i; <|a9r: [  
stack[++top]=l-1; 2l8z/o7v  
} -]Oi/i,{  
if((j-l)>THRESHOLD){ wS:`c J  
stack[++top]=l+1; BUsAEw M  
stack[++top]=j; J\I`#  
} 8O*O 5   
6lxZo_  
} dSzq}w4xY  
file://new InsertSort().sort(data); E{}eYU  
insertSort(data); gLg\W3TOi  
} g aXF3v*j  
/** p*Hf<)}  
* @param data +$G P(Uu,  
*/ %vrUk;<35  
private void insertSort(int[] data) { @v}M\$N?  
int temp; T!5g:;~y >  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j 2Jew  
} ^F/H?V/PX  
} ]G=^7O]`C!  
} A^ry|4`3(  
VDv>I 2%  
} tpKQ$) ed  
bEzy KrN\  
归并排序: EPeV1$  
}Ot2; T  
package org.rut.util.algorithm.support; FBI^}^#_  
a^9}ceu?   
import org.rut.util.algorithm.SortUtil; &R}2/Mt  
Z9PG7h  
/** ]<E\J+5K  
* @author treeroot k5GJrK+  
* @since 2006-2-2 `"E<%$|ZQy  
* @version 1.0 xTdh/}  
*/ ZCkwK  
public class MergeSort implements SortUtil.Sort{ HBgt!D0MZ  
MqswYK-s  
/* (non-Javadoc) Y<`uq'V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y3f2RdGl  
*/ e p\a  
public void sort(int[] data) { <F5x}i~(C  
int[] temp=new int[data.length]; N6S}u@{J~N  
mergeSort(data,temp,0,data.length-1);  0GiL(e|  
} 6imQjtI  
R&s\h"=*  
private void mergeSort(int[] data,int[] temp,int l,int r){ 6rzXM`cs  
int mid=(l+r)/2; Sc$]ar]S  
if(l==r) return ; c5tCw3$t  
mergeSort(data,temp,l,mid); r}])V[V  
mergeSort(data,temp,mid+1,r); A! !W\Jt  
for(int i=l;i<=r;i++){ 5ayH5=(t  
temp=data; mE_?E&T`|  
} Y[ toN9,  
int i1=l; D7b] ;Nf\  
int i2=mid+1; Ea[K$NC)#  
for(int cur=l;cur<=r;cur++){ ukRbSJ5a5  
if(i1==mid+1) M&K'5G)7  
data[cur]=temp[i2++]; djtCv;z  
else if(i2>r) Qa=v }d-O  
data[cur]=temp[i1++]; cYp]zn+6  
else if(temp[i1] data[cur]=temp[i1++]; f\gN+4)  
else M2e_)f:  
data[cur]=temp[i2++]; N!:&Xz  
} c2<JS:!*  
} Zo|# ,AdE>  
8!{F6DG  
} Zb=H\#T  
s@vHU4  
改进后的归并排序: z>X<Di&x)  
v9s /!<j  
package org.rut.util.algorithm.support; %JC-%TRWK  
[1{uK&$e  
import org.rut.util.algorithm.SortUtil; 0(!D1G{ul  
Ks@  
/** &c)n\x*  
* @author treeroot `-L{J0xq  
* @since 2006-2-2 oO8V0VE\  
* @version 1.0 m#a0HH  
*/ TS{ycGY  
public class ImprovedMergeSort implements SortUtil.Sort { (\<#fkeH  
\-B8`ah  
private static final int THRESHOLD = 10; Una7O]  
jNa'l<dn]  
/* Gn_rf"  
* (non-Javadoc) Oy^)lF/  
* n2$(MDdL`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )ieT/0nt  
*/ s*k[Fbi  
public void sort(int[] data) { b+.P4+  
int[] temp=new int[data.length]; ^%V^\DK  
mergeSort(data,temp,0,data.length-1); - kVt_  
} L`Lro:E?kL  
QVVR_1Q  
private void mergeSort(int[] data, int[] temp, int l, int r) { 9fyJw1  
int i, j, k; Qyr^\a;k'  
int mid = (l + r) / 2; Rs0O4.yi;@  
if (l == r) Bu\:+3)  
return; `is."]%f  
if ((mid - l) >= THRESHOLD) l H@hV  
mergeSort(data, temp, l, mid); 7r?s)ZV  
else %,G&By&,  
insertSort(data, l, mid - l + 1); JlZU31Xws  
if ((r - mid) > THRESHOLD) -c"nx$  
mergeSort(data, temp, mid + 1, r); D)ZGTq`(  
else [4u.*oL&  
insertSort(data, mid + 1, r - mid); y3 vDKZ  
&"(xd@V)]A  
for (i = l; i <= mid; i++) { cg-\|H1  
temp = data; $d]3ek/  
} lj{Jw.t  
for (j = 1; j <= r - mid; j++) { zoUM<6q  
temp[r - j + 1] = data[j + mid]; a&3pPfC  
} |]tIE{d  
int a = temp[l]; "Cz8nG  
int b = temp[r]; '+6SkZ  
for (i = l, j = r, k = l; k <= r; k++) { 6tC0F=  
if (a < b) { Lc<v4Bp  
data[k] = temp[i++]; TmZ% ;TN  
a = temp; g q|T:  
} else { cN}Aeo  
data[k] = temp[j--]; .""?k[f5Q  
b = temp[j]; 0=3Av8  
} 1Y2]jz4  
} 7q2G/_  
} {s8v0~  
/0PBY-O  
/** \>b :  
* @param data 8[zux4<m  
* @param l .DzFt c  
* @param i ,i>{yrsOh  
*/ K"%_q$[YQ  
private void insertSort(int[] data, int start, int len) { D<-MbK^S  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); llbf(!  
} X,)`< >=O  
} 8T&.8r  
} Sn(e@|!G  
} 8.9Z0  
\e89 >m  
堆排序: nH6Ny  
?<YQ %qaW7  
package org.rut.util.algorithm.support; Ev adY  
,4O|{Iu#n  
import org.rut.util.algorithm.SortUtil; #le1 ^ <w7  
4<j)1i=A  
/** 2pKkg>/S  
* @author treeroot l70a&[W  
* @since 2006-2-2 r#svj*dn  
* @version 1.0 yK1@`3@?  
*/ ] LcCom:]  
public class HeapSort implements SortUtil.Sort{ ~F gxhK2+  
X+0+ }S  
/* (non-Javadoc) }0Q_yuzx0m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V 6DWYs>  
*/ _h?hFs,N]  
public void sort(int[] data) { 41Y1M]`=  
MaxHeap h=new MaxHeap(); v:$Ka@v6  
h.init(data); qK_jgj=w  
for(int i=0;i h.remove(); M>eMDCB\  
System.arraycopy(h.queue,1,data,0,data.length); b3'U }0Ug  
} T?4pV#  
oGtz*AP%  
private static class MaxHeap{ ~Ox !7Lp  
}Kt`du=  
void init(int[] data){ 2=\} 0  
this.queue=new int[data.length+1]; Nk#[~$Q-1  
for(int i=0;i queue[++size]=data; 3FD6.X>x  
fixUp(size); })?t:zX#*  
} DJ zJ$Q  
} F gi&CJ8Q  
HLlp+;CF><  
private int size=0; bdS  
|Ok@:Au  
private int[] queue; Xr B)[kQ  
t<F*ODn  
public int get() { uWtj?Q+M|  
return queue[1]; ZNHlq5  
} ,/oqLI\  
xF/u('A  
public void remove() { JX.3b_O  
SortUtil.swap(queue,1,size--); 8^ ujA  
fixDown(1); -z s5WaJn/  
} {IB}g:  
file://fixdown zs=[C+Z\  
private void fixDown(int k) { [>IV#6$  
int j; !R`E+G@   
while ((j = k << 1) <= size) { 8M<\?JD~_f  
if (j < size %26amp;%26amp; queue[j] j++; jTeHI|b  
if (queue[k]>queue[j]) file://不用交换 "j2th.  
break; u~]O #v  
SortUtil.swap(queue,j,k); uK6'TJ  
k = j; n'5LY9"  
} ;2k!KW@  
} o)V@|i0Js  
private void fixUp(int k) { Z9)-kRQz=r  
while (k > 1) { R^hlfKnt  
int j = k >> 1; *F^t)K2  
if (queue[j]>queue[k]) /h(bMbZ  
break; NFs Cq_f  
SortUtil.swap(queue,j,k); {^z>uRZ3  
k = j; |E}-j;(  
} prk@uYCa =  
} Wx:He8N] H  
d-rqZn}  
} ehpU`vQz  
e|-%-juI  
} ?@>PKUv{  
rGn6S &-  
SortUtil: * ^+]`S  
j5Cf\*B4J  
package org.rut.util.algorithm; hFQ*50n}  
(:9=M5d  
import org.rut.util.algorithm.support.BubbleSort; k#oe:u`<  
import org.rut.util.algorithm.support.HeapSort; 'PS_|zI  
import org.rut.util.algorithm.support.ImprovedMergeSort; p.ks jD  
import org.rut.util.algorithm.support.ImprovedQuickSort; j*6>{_[  
import org.rut.util.algorithm.support.InsertSort; wni^qs.i@3  
import org.rut.util.algorithm.support.MergeSort; +lhjz*0  
import org.rut.util.algorithm.support.QuickSort; +~7x+6E  
import org.rut.util.algorithm.support.SelectionSort; +I <^w)  
import org.rut.util.algorithm.support.ShellSort; "Dt: 8Nf^  
ns&3Dh(IVP  
/** x@p1(V.  
* @author treeroot qlNB\~HCe  
* @since 2006-2-2 M(|6YF7u  
* @version 1.0  d5YL=o  
*/ W6A-/;S\  
public class SortUtil { %7S{g  
public final static int INSERT = 1; yADX^r(  
public final static int BUBBLE = 2; N hY`_?)  
public final static int SELECTION = 3; hWz/PK,  
public final static int SHELL = 4; a !yBEpMo  
public final static int QUICK = 5; hU~up a<dD  
public final static int IMPROVED_QUICK = 6; ^&z3zFTp  
public final static int MERGE = 7; d%~OEq1i"  
public final static int IMPROVED_MERGE = 8; g9.y`o}c  
public final static int HEAP = 9; W[G5+*i  
e#<A\?  
public static void sort(int[] data) { MwHxn%  
sort(data, IMPROVED_QUICK); wqasI@vyu  
} c D5N'3  
private static String[] name={ ev[!:*6P  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" mb?r{WCi  
}; ) >H11o{&  
X 2Zp @q(  
private static Sort[] impl=new Sort[]{ p6&6^v\  
new InsertSort(), sLOkLz"x  
new BubbleSort(), ?Z2_y-  
new SelectionSort(), rUW/d3y  
new ShellSort(), 0PdX>h.t  
new QuickSort(), }? :T*CJ  
new ImprovedQuickSort(), g@Z7f y7  
new MergeSort(), T!2gOe  
new ImprovedMergeSort(), 9$WA<1PK+  
new HeapSort() fAT+x1J\  
}; *JA0Vs 5  
?58*#'r  
public static String toString(int algorithm){ iGw\A!}w\  
return name[algorithm-1]; ,opS)C$  
} rNl%I@G  
]^6r7nfR6|  
public static void sort(int[] data, int algorithm) { 68()2v4X  
impl[algorithm-1].sort(data); G2s2i2& 6E  
} 6[3>[ej:x  
eAK=ylF;  
public static interface Sort { g?gF*^_0  
public void sort(int[] data); C>*1f|<  
} Blox~=cW  
tL\L4>^7T  
public static void swap(int[] data, int i, int j) { x4CSUcKb  
int temp = data; vduh5.  
data = data[j]; 9!,f4&G`  
data[j] = temp; p1']+4r%  
} X?z CB  
} y(yBRR  
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