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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。 5-&"nn2*}1  
插入排序: v}IhO~`uEq  
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package org.rut.util.algorithm.support; }iU pBn  
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import org.rut.util.algorithm.SortUtil; B;piO-hH  
/** 7 Z? Hyv  
* @author treeroot #]gmM  
* @since 2006-2-2 cVr+Wp7K#|  
* @version 1.0 :s-9@Yl|  
*/ EP+LK?{%  
public class InsertSort implements SortUtil.Sort{ Ua=r24fy  
mwI7[I2q  
/* (non-Javadoc) n@q- f-2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S a}P |qI  
*/ (<e<Q~(  
public void sort(int[] data) { 3od16{YH  
int temp; 1i)3!fH0:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cF?0=un  
} Qam48XZ >  
} +m/n~-6q  
} roBb8M|q  
>6)|># Wi  
} +F2X2e)g"  
f"zmNG'  
冒泡排序: j"VDqDDz  
1083p9Uh  
package org.rut.util.algorithm.support; j5]ul!ji  
- leYR`P  
import org.rut.util.algorithm.SortUtil; sNP ;  
QBN\wL8g  
/** VYt<j<ba  
* @author treeroot ;BKU _}k=  
* @since 2006-2-2 N0JdU4'  
* @version 1.0 <$WS~tTz  
*/ Ed2A\S6tl  
public class BubbleSort implements SortUtil.Sort{ :fq4oHA#  
Zs,6}m\  
/* (non-Javadoc) >Q?8tGfB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fc[_~I'  
*/ n+i=Ff  
public void sort(int[] data) { #3'M>SaoH  
int temp; |{_>H '  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <iGW~COd  
if(data[j] SortUtil.swap(data,j,j-1); Fmz+ Xb  
} )} t't"  
} (mKH,r  
} a;M{ -G  
} =2ED w_5E  
0r8Wv,7Bo  
} _mwt{D2r}  
N]6t)Zv  
选择排序: ()F {kM8  
m7u`r(&  
package org.rut.util.algorithm.support; 3d olrW  
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import org.rut.util.algorithm.SortUtil; kRBO]  
U%[ye0@:  
/** Dg{d^>T!_x  
* @author treeroot k}NM]9EAE  
* @since 2006-2-2 HXztEEK6  
* @version 1.0 J_m@YkK  
*/ "Aw)0a[j1  
public class SelectionSort implements SortUtil.Sort { !6@'H4cb=  
g|7o1{   
/* CjP<'0gT  
* (non-Javadoc) ;gD\JA  
* X J)Y-7c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~id:Rh>o  
*/ Im@OAR4,R  
public void sort(int[] data) { 0Oc?:R'$  
int temp; VuH ->  
for (int i = 0; i < data.length; i++) { U V*Ruy-  
int lowIndex = i; h:r?:C>n  
for (int j = data.length - 1; j > i; j--) { T?1V%!a;f  
if (data[j] < data[lowIndex]) { 0K26\1  
lowIndex = j; bv b \G  
} 1 <+aF,  
} d!YP{y P  
SortUtil.swap(data,i,lowIndex); 79exZ7|  
} N'R^gL  
} T<? kH  
Lhe&  
} a !%,2|U  
q CYu@Ho  
Shell排序: N&?V=X  
g$?^bu dxv  
package org.rut.util.algorithm.support; MGt>:&s(]  
IDFzyg_  
import org.rut.util.algorithm.SortUtil; @z{SDM  
>7%T%2N  
/** ZDgT"53   
* @author treeroot vZ"gCf3#?3  
* @since 2006-2-2 FiUwy/,ZV  
* @version 1.0 *Q/^ib9=  
*/ n$r`s`}  
public class ShellSort implements SortUtil.Sort{ t'@mUX:-A  
#~"IlBk\  
/* (non-Javadoc) ,aC}0t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X.k8w\~  
*/ iae NY;T  
public void sort(int[] data) { ~uty<fP  
for(int i=data.length/2;i>2;i/=2){ ,6X;YY  
for(int j=0;j insertSort(data,j,i); }9fch9>Zr  
} M K)}zjw  
} C8> i{XOO,  
insertSort(data,0,1); $5)#L$!,]  
} *qy \%A  
#]tDxZ] 6  
/** iBSg`"S^]C  
* @param data -ZZJk-::  
* @param j 3WGET[3  
* @param i Pd"c*n&9  
*/ d$3md<lIB  
private void insertSort(int[] data, int start, int inc) { abR<( H12  
int temp; pF-_yyQ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #NYnZ^6e  
} fI<LxU_n:  
} ;Jg$C~3tf  
} phjM(lmCo  
<KU 0K  
} ION o&~-l  
Sl, DZ!  
快速排序: r+E!V'{C  
XNJZ~Mowb  
package org.rut.util.algorithm.support; nLz;L r!  
F{E@snc  
import org.rut.util.algorithm.SortUtil; bHnKtaK4c  
 t8EI"|  
/** )__sw  
* @author treeroot )- &@ 8`  
* @since 2006-2-2 Kgr<OL}VJ  
* @version 1.0 @i>)x*I#AI  
*/ |7c],SHm  
public class QuickSort implements SortUtil.Sort{ 3Z9Yzv)A  
A&t8C8,  
/* (non-Javadoc) GEc-<`-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <1*.:CL"s  
*/ V=8db% ^  
public void sort(int[] data) { 7CH&n4v  
quickSort(data,0,data.length-1); Cy$~H  
} bTimJp[b  
private void quickSort(int[] data,int i,int j){ X1.-C@o  
int pivotIndex=(i+j)/2; p7Wt(A  
file://swap q& -mbWBj  
SortUtil.swap(data,pivotIndex,j); q=5aHH% |  
5tbCx!tL  
int k=partition(data,i-1,j,data[j]); 94#,dA,M  
SortUtil.swap(data,k,j); *mp:#'  
if((k-i)>1) quickSort(data,i,k-1); !\R5/-_UU  
if((j-k)>1) quickSort(data,k+1,j); yO)xN=o^\  
5WHz_'c  
} \{ EVRRXn  
/** $\J5l$tU  
* @param data k37?NoT  
* @param i PzSL E>Q  
* @param j f )T\  
* @return 1*hEbO  
*/ OXrm!'  
private int partition(int[] data, int l, int r,int pivot) { V0,JTWc  
do{ I~n4}}9M  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); h6D4CT  
SortUtil.swap(data,l,r); ZDmL?mC  
} "D.<~!  
while(l SortUtil.swap(data,l,r); (2H GV+Dg  
return l; hO8xH +;  
} vlkw Wm  
=fRS UtX  
} n/1t UF  
BC.3U.  
改进后的快速排序:  wkZwtq  
g8MW6Y  
package org.rut.util.algorithm.support; rt*x[5<  
 aO<7a 6  
import org.rut.util.algorithm.SortUtil; PEvY3F}_rh  
.ifz9 jM'  
/** 3Y38l P:>h  
* @author treeroot d|RUxNjM-J  
* @since 2006-2-2 gd0)s1{9  
* @version 1.0 K-k!':K:  
*/ _ZhQY,  
public class ImprovedQuickSort implements SortUtil.Sort { Vt}QP Nt  
#b;?:.m\=  
private static int MAX_STACK_SIZE=4096; ]`$yY5&W0  
private static int THRESHOLD=10; Q")Xg:  
/* (non-Javadoc) ,K,st+s|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -yqgs>R(d  
*/ aNu.4c/5  
public void sort(int[] data) { ~7ZZb*].(  
int[] stack=new int[MAX_STACK_SIZE]; 06Wqfzceb  
c_vGr55  
int top=-1; )&O2l  
int pivot; BZW03e8|  
int pivotIndex,l,r; kMVr[q,MEq  
nu\AEFT  
stack[++top]=0; A^z{n/DiL  
stack[++top]=data.length-1; ly` A,dh  
0`S{>G  
while(top>0){ 6{.U7="  
int j=stack[top--]; DehjV6t  
int i=stack[top--]; Un K7&Uo  
+w]#26`d  
pivotIndex=(i+j)/2; Nt $4;  
pivot=data[pivotIndex]; L /ibnGhq]  
X\;:aRDS  
SortUtil.swap(data,pivotIndex,j); P0}B&B/a:  
e7GYz7  
file://partition c~(61Sn]  
l=i-1; 1+*sEIC"  
r=j; D-{*3?x  
do{ lW| =rq-|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); j2,sI4  
SortUtil.swap(data,l,r); C1NU6iV^z  
} C,+  
while(l SortUtil.swap(data,l,r); Qq:}Z7 H  
SortUtil.swap(data,l,j); b_TI_  
eaf-_#qb  
if((l-i)>THRESHOLD){ :-jbIpj'  
stack[++top]=i; n8Qv8  
stack[++top]=l-1; 7vZO;FGtG  
} E$ \l57  
if((j-l)>THRESHOLD){ nlB'@r  
stack[++top]=l+1; 9jImuSZ  
stack[++top]=j; {*+J`H_G2a  
} SN@>mpcJS  
*4 LS``  
} 3]vVuQK.  
file://new InsertSort().sort(data); |c0^7vrC  
insertSort(data); :7LA/j  
} yP3I^>AZ3  
/** i FZGfar?  
* @param data H Y5R  
*/ CsZm8oL$  
private void insertSort(int[] data) { 0M;g&&mF  
int temp; AwG0E `SU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T9$~tv,5F  
} }Ecv6&G  
} $!wU [/k  
} WS[Z[O  
X8m-5(uW  
} z` 6$p1U  
:N<Qk  
归并排序: )] q Qgc&  
8lx}0U  
package org.rut.util.algorithm.support; 2+y wy^  
X[.%[G|oj}  
import org.rut.util.algorithm.SortUtil; s@:Yu  
p+~Imf-Jk  
/** T`@brL  
* @author treeroot ?n{m2.H  
* @since 2006-2-2 XFoSGqD  
* @version 1.0 3\RD %[}  
*/ yFk|8d-|  
public class MergeSort implements SortUtil.Sort{ T&[6  
-Wa<}Tz  
/* (non-Javadoc) TXM/+sd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0B8Wf/j?M  
*/ *-=/"m  
public void sort(int[] data) { J=Kv-@I>E  
int[] temp=new int[data.length]; ?J2A.x5` a  
mergeSort(data,temp,0,data.length-1); M 0}r)@  
} ~.x#ic  
mRAt5a#is  
private void mergeSort(int[] data,int[] temp,int l,int r){ 90uXJyW;d  
int mid=(l+r)/2; B ZU@W%E  
if(l==r) return ; `\(co;:  
mergeSort(data,temp,l,mid); %1p-DX6  
mergeSort(data,temp,mid+1,r); }JtcAuQt  
for(int i=l;i<=r;i++){ JJ1>)S}X-  
temp=data; j xI;clr  
} c[2ikI,n[  
int i1=l; "gNi}dB<]  
int i2=mid+1; %|+aI?  
for(int cur=l;cur<=r;cur++){ @BLB.=  
if(i1==mid+1) 4r_*: $g  
data[cur]=temp[i2++]; ;B |  
else if(i2>r) -cUbIbW  
data[cur]=temp[i1++];  kVZs:  
else if(temp[i1] data[cur]=temp[i1++]; =U~53Tg  
else #@-dT,t  
data[cur]=temp[i2++]; i?d545. u  
} 6I(Y<LZ5  
} xKBi".wA  
o% Q7 el$f  
} Pi1LOCq  
7_3 PM 3C  
改进后的归并排序: 8fi'"  
6H2Bf*i  
package org.rut.util.algorithm.support; v$@1q9 5J  
A-B>VX  
import org.rut.util.algorithm.SortUtil; G[ns^  
2?LPr  
/** ).GM 0-y  
* @author treeroot g:~q&b[q6  
* @since 2006-2-2 c]1AM)xo  
* @version 1.0 %n6<6t`$  
*/ jQ7;-9/~N  
public class ImprovedMergeSort implements SortUtil.Sort { bbS,pid1  
lGK7XAx,  
private static final int THRESHOLD = 10; 4sSw7`  
oR`rs[Kj  
/* |1H9,:*%  
* (non-Javadoc) @$kzes\  
* &b,A-1`w_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dpchZ{  
*/ r2tE!gMC  
public void sort(int[] data) { }LS.bQKqi,  
int[] temp=new int[data.length]; UxB3/!<5g3  
mergeSort(data,temp,0,data.length-1); nF]E":  
} 4`o0?_.'  
)(.g~Q:  
private void mergeSort(int[] data, int[] temp, int l, int r) { Y5ei:r|^  
int i, j, k; 1,zc8>M  
int mid = (l + r) / 2; A>Qu`%g*  
if (l == r) :{S@KsPqE  
return; ^^ SMr l  
if ((mid - l) >= THRESHOLD) p;7wH\c  
mergeSort(data, temp, l, mid); h5@7@w%  
else 0n4(Rj|}2  
insertSort(data, l, mid - l + 1); !s$1C=z5u  
if ((r - mid) > THRESHOLD)  )bYOy+2g  
mergeSort(data, temp, mid + 1, r); Nf* .r  
else Zw4%L?   
insertSort(data, mid + 1, r - mid); DfGq m-c  
{C?$osrr  
for (i = l; i <= mid; i++) { t{s>B]i^_w  
temp = data; d j9i*#F  
} (7,Q4T  
for (j = 1; j <= r - mid; j++) { QTF1~A\  
temp[r - j + 1] = data[j + mid]; Jk`l{N  
} Z s| *+[  
int a = temp[l]; h(~of (  
int b = temp[r]; iM9k!u FE  
for (i = l, j = r, k = l; k <= r; k++) { &\5bo=5V  
if (a < b) { >e.vUUQ{  
data[k] = temp[i++]; Xg USJ*  
a = temp; ;InMgo,  
} else { <WmjjD  
data[k] = temp[j--]; ./DlHS;  
b = temp[j]; Rq",;,0ZJ  
} # ax% n  
} zmuR n4Nv  
} sGiK S,.K  
Z3Ww@&bU  
/** Rm,>6bQx  
* @param data /IX555/dR1  
* @param l )FA:wsy~E  
* @param i  L`Ys`7  
*/ r-WX("Vvh  
private void insertSort(int[] data, int start, int len) { $%&OaAg  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  N`X|z  
} Y)(w&E>1  
} .DnG}884  
} ]<%NX $9\  
} (<H@W/0$  
XMI5j7C L  
堆排序: M0vX9;J  
l]R7A_|  
package org.rut.util.algorithm.support; U? U3?Y-k`  
09Q5gal  
import org.rut.util.algorithm.SortUtil; FSkX95  
UT 7'-  
/** g38 MF  
* @author treeroot K-c>J uv&,  
* @since 2006-2-2 Y)GU{  
* @version 1.0 \SgBI/L^  
*/ &(o&Y  
public class HeapSort implements SortUtil.Sort{ |Z o36@s  
0x&L'&SpN  
/* (non-Javadoc) M3d%$q)<rW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lF7".  
*/ 8{&.[S C7  
public void sort(int[] data) { g>b{hkIXg  
MaxHeap h=new MaxHeap(); CNWA!1n^Hy  
h.init(data); d,'gh4C  
for(int i=0;i h.remove(); 2>CR]  
System.arraycopy(h.queue,1,data,0,data.length); )T slI  
} ]-+l.gVFW  
5lwMc0{/3  
private static class MaxHeap{ NOAz"m+o  
$RC)e 7  
void init(int[] data){ qsQTJlq)  
this.queue=new int[data.length+1]; -Vmp6XY3q  
for(int i=0;i queue[++size]=data; {?cF2K#  
fixUp(size); k cNPdc  
} (enOj0  
} $(yi+v  
?ZhBS3L  
private int size=0; \m<$qp,n  
bXM&VW?OP  
private int[] queue; ! bwy/A  
( p CU:'"  
public int get() { V72?E%d0  
return queue[1]; r. rzU  
} Y$ KR\ m  
;jKLB^4nX  
public void remove() { ^>fr+3a"P  
SortUtil.swap(queue,1,size--); 5RF*c,cNq  
fixDown(1); {uqP+Cs  
} je%y9*V  
file://fixdown P|;v>  
private void fixDown(int k) { A=D G+z''  
int j; + :b"0pu-H  
while ((j = k << 1) <= size) { }h sR}  
if (j < size %26amp;%26amp; queue[j] j++; J'wJe,  
if (queue[k]>queue[j]) file://不用交换 Q:ql~qew  
break; 0yb9R/3.  
SortUtil.swap(queue,j,k); $/E{3aT@F2  
k = j; Pn ?gB}l  
} cA90FqUH  
} I3ugBLxVC3  
private void fixUp(int k) { (;N#Gqb6l  
while (k > 1) { 1l.HQ IS  
int j = k >> 1; BY$L[U;@T  
if (queue[j]>queue[k]) qzu(4*Gk6  
break; )L"J?wTe  
SortUtil.swap(queue,j,k); 1 a%1C`d  
k = j; {JfL7%  
} R0q|{5S  
} OskQ[ e0  
rF/<}ye/4M  
} 1CUI6@Cz)  
1b2xWzpG  
} W7\UZPs5t  
m9ky?A,  
SortUtil: \rH0=~F-P  
L*{E-m/  
package org.rut.util.algorithm; :{-/b  
$o ;48uV^  
import org.rut.util.algorithm.support.BubbleSort; Zo Ra^o  
import org.rut.util.algorithm.support.HeapSort; E8aD[j[w  
import org.rut.util.algorithm.support.ImprovedMergeSort; fz+dOIU3\L  
import org.rut.util.algorithm.support.ImprovedQuickSort; @|d`n\%x  
import org.rut.util.algorithm.support.InsertSort; <CS,v)4,nH  
import org.rut.util.algorithm.support.MergeSort; d @b ]/  
import org.rut.util.algorithm.support.QuickSort; tR?)C=4,  
import org.rut.util.algorithm.support.SelectionSort; Ai`0Ud,M@  
import org.rut.util.algorithm.support.ShellSort; * YLp C^&  
byk9"QeY\  
/** }l5Q0'  
* @author treeroot J2!)%mF$  
* @since 2006-2-2 UrdSo"%  
* @version 1.0 "OrF81  
*/ ;jmT5XzL  
public class SortUtil { 'pT8S  
public final static int INSERT = 1; 80LN(0?x  
public final static int BUBBLE = 2; t2FA|UF  
public final static int SELECTION = 3; aBKJd  
public final static int SHELL = 4; <07~EP  
public final static int QUICK = 5; kM7 6?M  
public final static int IMPROVED_QUICK = 6; |u[@g`Z  
public final static int MERGE = 7; )kE1g&  
public final static int IMPROVED_MERGE = 8; 'D^@e0.3  
public final static int HEAP = 9; f3mQd}<L  
F^!_!V B  
public static void sort(int[] data) { uAV-wc  
sort(data, IMPROVED_QUICK); zHXb[$ Q  
} |_16IEJ  
private static String[] name={ oK2jPP  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =^w:G=ymS  
}; Y>CZ  
3o_@3-Y%  
private static Sort[] impl=new Sort[]{ 1HeE$  
new InsertSort(), /,+&O#SX  
new BubbleSort(), !Ic~_7"  
new SelectionSort(), YS>VQl  
new ShellSort(), ,'@t .XP  
new QuickSort(), GOX2'N\h^  
new ImprovedQuickSort(), :?\Je+iA  
new MergeSort(), gzp]hh@4  
new ImprovedMergeSort(), ['aiNhlbt  
new HeapSort() lkb,UL;V  
}; .s3y^1C  
rG'W#!^*  
public static String toString(int algorithm){ AN+S6t  
return name[algorithm-1]; eY(JU5{  
} <1kK@m -E  
BBj>ML\X  
public static void sort(int[] data, int algorithm) { F?4&qbdD  
impl[algorithm-1].sort(data); <a& $D  
} P?<G:]W  
=gO4B-[  
public static interface Sort { H) q_9<;  
public void sort(int[] data); -\8v{ry  
} Jy-V\.N>s  
'I@l$H  
public static void swap(int[] data, int i, int j) { N?c!uO|h|  
int temp = data; D3C3_ @*  
data = data[j]; G]gc*\4  
data[j] = temp; ")3$. '5Dg  
} Ji0FHa_  
} ~lr,}K,  
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