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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。 ,#D &*  
插入排序: #L BZ%%v  
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package org.rut.util.algorithm.support; .i@e6JE~;  
ECU:3KH>MF  
import org.rut.util.algorithm.SortUtil; ? 0nbvV5v7  
/** (Cqhk:F  
* @author treeroot )[G5qTO  
* @since 2006-2-2 H.!M_aJH  
* @version 1.0 Sf lHSMFw  
*/ 0u -'{6  
public class InsertSort implements SortUtil.Sort{ Jr 9\j3J{  
6S<J'9sE  
/* (non-Javadoc) @/B&R^aVZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b.;F)(  
*/ ks 3<zW(  
public void sort(int[] data) { mi<V(M~p  
int temp; b^6Ooc/-k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }|AUV  
} %'k^aq FL  
} oy#Qj3M8=  
} wGLZzqgq  
vYrqZie<  
} &*[T  
nwHi3ojD:  
冒泡排序: A$[@AY$MI  
w+*Jl}&\  
package org.rut.util.algorithm.support; PgxD?Oi8  
D]Bvjh   
import org.rut.util.algorithm.SortUtil; /nGsl<  
wM_k D  
/** JEs?Rm1^.  
* @author treeroot |f?tyQ  
* @since 2006-2-2 Th'6z#h:U  
* @version 1.0 2c_#q1/Z/  
*/ W@JmG`Sy  
public class BubbleSort implements SortUtil.Sort{ ]rXRon='  
I[@}+p0  
/* (non-Javadoc) Qc Ia%lf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YPFjAQ  
*/ y]+i. 8[  
public void sort(int[] data) { 8b[ ^6]rM  
int temp; gGH<%nHW1  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _;L9&>!p6  
if(data[j] SortUtil.swap(data,j,j-1); x.xfMM2n  
} 11Pm lzy  
} 4{[Df$'e>  
} RU>T?2  
} _<yJQ|[z~i  
ZlUd^6|:3  
} pg [F{T<  
|!aMj8i2  
选择排序: {: T'2+OH>  
O*`] ]w]  
package org.rut.util.algorithm.support; \%K< S  
/{."*jK  
import org.rut.util.algorithm.SortUtil; k8Qm +r<p  
wtu WzHrF  
/** =3_I;L w  
* @author treeroot vxzh|uF  
* @since 2006-2-2 OjCTTz  
* @version 1.0 %D)W~q-g  
*/ -WWa`,:  
public class SelectionSort implements SortUtil.Sort { n? e&I>1W  
Nv{r`J.  
/* ,JYvfCA  
* (non-Javadoc) N2 wBH+3w  
* GKTrf\"c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jSsbLa@  
*/ BA4qQCS;5  
public void sort(int[] data) { EC<g7_0F  
int temp; +[<|TT  
for (int i = 0; i < data.length; i++) { p-POg%|&<  
int lowIndex = i; dq+VW}[EO  
for (int j = data.length - 1; j > i; j--) { _VLc1svv  
if (data[j] < data[lowIndex]) { |JC/A;ZH  
lowIndex = j; Rq-BsMX!A  
} f02 <u  
} $b,o3eC  
SortUtil.swap(data,i,lowIndex); ] lE6:^V  
} _z4c7_H3  
} V^Z"FwWk  
TcPYDAa  
} /GCI`hx>"  
2Dgulx5kGZ  
Shell排序: ;m`k#J?  
!ba /] A/  
package org.rut.util.algorithm.support; +F= j1*'&  
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import org.rut.util.algorithm.SortUtil; 00X~/'!  
q,w8ca 4~y  
/** xfZ.  
* @author treeroot }SpjB  
* @since 2006-2-2 G;#-CT  
* @version 1.0 ^Tgu]t   
*/ 8@pY:AY  
public class ShellSort implements SortUtil.Sort{ n]c6nX:'  
)!M %clm.  
/* (non-Javadoc) yE1M+x./  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lM oi5q  
*/ VSns_>o  
public void sort(int[] data) { Y%eFXYk.  
for(int i=data.length/2;i>2;i/=2){ fn(< <FA)  
for(int j=0;j insertSort(data,j,i); GvQKFgO6h  
} /Z`("X?_Kf  
} E_k<EQ%r  
insertSort(data,0,1); LE#ko2#ke  
} &Z3g$R 9  
6a$=m3ic  
/** 30cZz  
* @param data H*s_A/$  
* @param j TN!8J=sx.  
* @param i ,rkY1w-  
*/ - "`5r6  
private void insertSort(int[] data, int start, int inc) { HQqnJ;ns<  
int temp; X <QSi   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wtlIyE  
} >#~!03  
} 4B? 8$&b  
} $3.hZx>  
c%,@O&o  
} ' e @`HG  
{BB#Bh[  
快速排序: 0* 7N=  
lAYyxG#  
package org.rut.util.algorithm.support; MtWzGE=?  
R <Mvwu  
import org.rut.util.algorithm.SortUtil; bn$a7\X-  
ffDh 0mDN  
/** E$!0h_.(  
* @author treeroot G?Fqm@J{XT  
* @since 2006-2-2 $hv o^$  
* @version 1.0 gT3i{iU  
*/ oTS/z\C"<u  
public class QuickSort implements SortUtil.Sort{ KA^r,Iw  
'VVEd[  
/* (non-Javadoc) ;QZ}$8D6Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E&js`24 &  
*/ @q8h'@sX  
public void sort(int[] data) { _OR@S%$  
quickSort(data,0,data.length-1); l@:|OGD;8  
} 9Q)9*nHe  
private void quickSort(int[] data,int i,int j){ qkHdr2  
int pivotIndex=(i+j)/2; 8['8ctX  
file://swap jNjm}8`t  
SortUtil.swap(data,pivotIndex,j); F<R+]M:fa  
fSR+~Vy  
int k=partition(data,i-1,j,data[j]); x$p_mWC  
SortUtil.swap(data,k,j); M`m-@z  
if((k-i)>1) quickSort(data,i,k-1); DNYJR]>  
if((j-k)>1) quickSort(data,k+1,j); h zv4+1Wd[  
u Uy~$>V  
} $Sg5xkV,a  
/** E(%_aFx>/  
* @param data 9:[L WT&  
* @param i 6d%V=1^F  
* @param j Eu;f~ V  
* @return Tw`n3y?  
*/ $eqwn&$n  
private int partition(int[] data, int l, int r,int pivot) { p>9-Ga  
do{ {c|{okQ;Q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); '#Yqs/V  
SortUtil.swap(data,l,r); _'OXrT#Q  
} p0r:U< &  
while(l SortUtil.swap(data,l,r); IZw>!KYG  
return l; xMOq/" )  
} J]m[0g7O_  
CRpMpPi@}  
} ]x12_+  
r0xmDJ@y  
改进后的快速排序: |:[ [w&R  
6$.I>8n  
package org.rut.util.algorithm.support; v%|S)^c?:  
=uG}pgh0  
import org.rut.util.algorithm.SortUtil; SO!|wag$  
z+~klv 3  
/** JI5%fU%O#n  
* @author treeroot OQ=0>;>  
* @since 2006-2-2 m N&G  
* @version 1.0 Q)lN7oD  
*/ JA <Hm.V#  
public class ImprovedQuickSort implements SortUtil.Sort { ZYMacTeJjg  
:b~5nftr  
private static int MAX_STACK_SIZE=4096; }HLs.k4-;  
private static int THRESHOLD=10; @)^|U"  
/* (non-Javadoc) X"sc'#G T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \H&8.<HJ  
*/ awC:{5R8v  
public void sort(int[] data) { O_S%PX  
int[] stack=new int[MAX_STACK_SIZE]; 9-`P\/  
*ydh.R<hb  
int top=-1; Yvn*evO4  
int pivot; [t}@>@W|  
int pivotIndex,l,r; %@ ,! (  
(\zxiK  
stack[++top]=0; z&Kh$ $)[  
stack[++top]=data.length-1; Uv|?@zy#  
K'@lXA:  
while(top>0){ 3!*qB-d  
int j=stack[top--]; o"19{ D^.  
int i=stack[top--]; s9\N{ar#  
*U}cj A:ZN  
pivotIndex=(i+j)/2; `=.A]) >  
pivot=data[pivotIndex]; G)8H9EV  
pH/_C0e`7  
SortUtil.swap(data,pivotIndex,j); 7 ~9Lj  
bQ`|G(g-d  
file://partition b.#0{*/G  
l=i-1; mJYG k_ua  
r=j; q}r{%ypf  
do{ x T{s%wE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1Pp2wpD4iC  
SortUtil.swap(data,l,r); g><i tA?  
} 3[cGSI"+  
while(l SortUtil.swap(data,l,r); 1>'xmp+#  
SortUtil.swap(data,l,j); k8S`44vj  
DWXHx  
if((l-i)>THRESHOLD){ D6vhW:t8?  
stack[++top]=i; +d'1  
stack[++top]=l-1; CYn56eRK  
} /1z3Q_M  
if((j-l)>THRESHOLD){ gaC [%M  
stack[++top]=l+1; -Crm#Ib~  
stack[++top]=j; r=Od%  
} WCL#3uYk"  
\}EJtux q  
} ^tRy6zG  
file://new InsertSort().sort(data); fI"OzIJV  
insertSort(data); S '(K  
} Rl[SqmnI)@  
/** X ApSKJ  
* @param data ]r@CmwC  
*/ E! mxa  
private void insertSort(int[] data) { ~@%#eg  
int temp; !9]q+XefJ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g=Bge)  
} T_I ApC  
} W;^6=(&xn  
} v%4zP%4Ak[  
[{-5  
} !D~\uW1b  
6SP!J*F  
归并排序: +Cs.v.GA5  
-/LB-t  
package org.rut.util.algorithm.support; AVi,+n  
D22jWm2  
import org.rut.util.algorithm.SortUtil; 39oI &D>8  
flS_rY5  
/** jVInTR0f[  
* @author treeroot ,ek0)z.  
* @since 2006-2-2 (5efNugc  
* @version 1.0 h{.x:pPXy  
*/ >fx/TSql:J  
public class MergeSort implements SortUtil.Sort{ .s`7n *xz  
sUN9E4  
/* (non-Javadoc) s&D>'J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GK[[e~#u  
*/ f,:2\b?.  
public void sort(int[] data) { )vy_m_f&  
int[] temp=new int[data.length]; C3-I5q(V]  
mergeSort(data,temp,0,data.length-1); YE[{Y(5;q  
} U{ ZKxE  
F0tx.]uS  
private void mergeSort(int[] data,int[] temp,int l,int r){ sV-UY!   
int mid=(l+r)/2; m?]= =9  
if(l==r) return ; tW=oAy  
mergeSort(data,temp,l,mid); A"Sp7M[J  
mergeSort(data,temp,mid+1,r); Tk:%YS;=  
for(int i=l;i<=r;i++){ R0bWI`$Z  
temp=data; 17S<6j#H5  
} ]:Sb#=,!&!  
int i1=l; .( X!*J]G  
int i2=mid+1; cW?~]E'<  
for(int cur=l;cur<=r;cur++){ 9}#9i^%}  
if(i1==mid+1) mL]5Tnc  
data[cur]=temp[i2++]; ;`rz]7,*  
else if(i2>r) g7O , <  
data[cur]=temp[i1++]; *(j -jbA  
else if(temp[i1] data[cur]=temp[i1++]; v\Edf;(  
else !y7w~UVs  
data[cur]=temp[i2++]; ;0;5+ J7  
} O^<\]_l  
} ({9P, D~2  
_v +At;Y  
} +YnQOh%v0s  
vlx\hJ<I  
改进后的归并排序: 4<y|SI!  
Vo(V<2lw}  
package org.rut.util.algorithm.support; oxJ#NGD  
X DAwE  
import org.rut.util.algorithm.SortUtil; ;1L7+.A  
mFJb9 ,  
/** f<l.%B  
* @author treeroot g33Y]\  
* @since 2006-2-2 Jec<1|  
* @version 1.0 T8\%+3e.  
*/ 15wwu} X  
public class ImprovedMergeSort implements SortUtil.Sort { iYb{qv_4  
X2to](\% X  
private static final int THRESHOLD = 10; p^i]{"sjbU  
AW/)R"+  
/* e3x;(@j  
* (non-Javadoc) 6uubkt  
* -KU@0G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `)_11ywZ  
*/ 4Vrx9 sA1  
public void sort(int[] data) { W!4xE  
int[] temp=new int[data.length]; H\ONv=}7I  
mergeSort(data,temp,0,data.length-1); Z=CY6Zu7  
} a#i%7mfn  
W5a>6u=g,  
private void mergeSort(int[] data, int[] temp, int l, int r) { E?3$ *t  
int i, j, k; R22P ol  
int mid = (l + r) / 2; "f3KE=cUm  
if (l == r) G?QU|<mj<  
return; &4-rDR,  
if ((mid - l) >= THRESHOLD) 6N]V.;0_5  
mergeSort(data, temp, l, mid); sKuPV  
else ufWd) Q  
insertSort(data, l, mid - l + 1); 5 ,1q%  
if ((r - mid) > THRESHOLD) .3*VkAs  
mergeSort(data, temp, mid + 1, r); +i.b&PF'H  
else [Q*aJLG  
insertSort(data, mid + 1, r - mid); 'hw_ew   
w=S7zzL)  
for (i = l; i <= mid; i++) { ~ E|L4E  
temp = data; GDj ViAFm  
} .4-I^W"1  
for (j = 1; j <= r - mid; j++) { x#s=eeP1  
temp[r - j + 1] = data[j + mid]; smt6).o  
} ljo^ 2  
int a = temp[l]; 'L0{Ed+9  
int b = temp[r]; m+/-SG  
for (i = l, j = r, k = l; k <= r; k++) { I+^B] @"  
if (a < b) { Z2dy|e(c  
data[k] = temp[i++]; !.ot&EbE  
a = temp; 2 !^[x~t  
} else { (iZE}qf7 g  
data[k] = temp[j--]; Aa;s.:?  
b = temp[j]; e!(0y)*  
} &JpFt^IHi  
} GL_a`.=@  
} boR&'yX  
p 8q9:Tz  
/** a+CHrnU\;  
* @param data =Xc[EUi<;g  
* @param l |,ZmRW^2K  
* @param i w*Gv#B9G  
*/ 3 T3p[q4  
private void insertSort(int[] data, int start, int len) { Svmyg]  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 43;@m}|7$  
} @:~O  
} kxg]sr"  
} .FnO  
} .wD>0Ig  
qG/a5i  
堆排序: ^#R-_I  
u|=G#y;3  
package org.rut.util.algorithm.support; \"qXlTQ1_9  
q($lL~Ls  
import org.rut.util.algorithm.SortUtil;  8IH&=3  
|Mp_qg?g  
/** g]V}azLr  
* @author treeroot dyjzF`H  
* @since 2006-2-2 m%$z&<!  
* @version 1.0 x,js}Mlw  
*/ $.}fL;BzVz  
public class HeapSort implements SortUtil.Sort{ *_$%Tv.]  
0*%j6*XDq9  
/* (non-Javadoc) 'f<0&Ci8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -uiZp !  
*/ _VR Sdr5  
public void sort(int[] data) { ^\cB&<h  
MaxHeap h=new MaxHeap(); 2C %{A  
h.init(data); RC8{QgaI  
for(int i=0;i h.remove(); x!q$`zF\\  
System.arraycopy(h.queue,1,data,0,data.length); ~\K+)(\SNp  
} J W&/l  
K,' ]G&K  
private static class MaxHeap{ (^eSm]<  
!xMyk>%2  
void init(int[] data){ Rcf_31 L  
this.queue=new int[data.length+1]; K2L+tw  
for(int i=0;i queue[++size]=data; +J$[RxQ#  
fixUp(size); lMp)T**  
} !l_ 1r$  
} p[&'*"o!/  
GFx >xQk  
private int size=0; ;,Sl+)@h  
VbK| VON[  
private int[] queue; ,a< !d  
B4GgR,P@S  
public int get() { ~tDV{ml  
return queue[1]; TeG5|`t],  
} 6{}]QvR  
I2%{6g@  
public void remove() { .BlGV2@^#  
SortUtil.swap(queue,1,size--); T\b e(@r  
fixDown(1); tp_*U,  
} ]gkI:scPA  
file://fixdown h5x FP  
private void fixDown(int k) { 9pStArF?F0  
int j; =4/lJm``  
while ((j = k << 1) <= size) { I9ubVcV8  
if (j < size %26amp;%26amp; queue[j] j++; 2@1A,  
if (queue[k]>queue[j]) file://不用交换 sju. `f>-r  
break; qJVW :$1q  
SortUtil.swap(queue,j,k); xc8MOm  
k = j; I 8`@Srw8  
} N4}/n  
} Am!$\T%2  
private void fixUp(int k) { D>~z{H%\  
while (k > 1) { z`xdRe{QP  
int j = k >> 1; ed2QGTgR  
if (queue[j]>queue[k]) (5;w^E9*n;  
break; me$ 7\B;wy  
SortUtil.swap(queue,j,k); %ztCcgu*  
k = j; JpD<2Mz_|V  
} _%;$y5]v  
} }X)mZyM[  
lycY1lK  
} TNUzNA  
<:2El9l!  
} $dgY#ST%  
R.!'&<Svq  
SortUtil: 9Rzu0:r.,  
!CTchk<{(  
package org.rut.util.algorithm; 7P?z{x':T  
7<mY{!2iF?  
import org.rut.util.algorithm.support.BubbleSort; #<S+E7uTs  
import org.rut.util.algorithm.support.HeapSort; ^|Of  
import org.rut.util.algorithm.support.ImprovedMergeSort; X.}:gU-  
import org.rut.util.algorithm.support.ImprovedQuickSort; V"#ie Y n  
import org.rut.util.algorithm.support.InsertSort; *ELbz}Q  
import org.rut.util.algorithm.support.MergeSort; fl!8\4  
import org.rut.util.algorithm.support.QuickSort; AwAUm 2^  
import org.rut.util.algorithm.support.SelectionSort; EQ-r  
import org.rut.util.algorithm.support.ShellSort; "b8<C>wY  
D4ESo)15'  
/** 5yI_uQR  
* @author treeroot ZC@ 33Q(  
* @since 2006-2-2 '0[D-jEr  
* @version 1.0 !=3[Bm G  
*/ \ty{KAc&  
public class SortUtil { G?jKm_`L  
public final static int INSERT = 1; Pb]: i+c)  
public final static int BUBBLE = 2; IKMkpX!]  
public final static int SELECTION = 3; 3~ ;LNi  
public final static int SHELL = 4; [ p$f)'  
public final static int QUICK = 5; 2%'{f  
public final static int IMPROVED_QUICK = 6;  5f(yF  
public final static int MERGE = 7; (, /`*GC  
public final static int IMPROVED_MERGE = 8; )q 8w+'z  
public final static int HEAP = 9; WUm8 3"  
}A\s`H m  
public static void sort(int[] data) { ]B/Gz  
sort(data, IMPROVED_QUICK);  s!X@ l  
} RSC^R}a5  
private static String[] name={ ijEMS1$=7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9=O`?$y  
}; l=ehoyER  
wmAZ {  
private static Sort[] impl=new Sort[]{  $A]2Iw!&  
new InsertSort(), 18f!k  
new BubbleSort(), As }:~Jy|  
new SelectionSort(), FNL[6.!PV  
new ShellSort(), ?{[ ISk)  
new QuickSort(), M{cF14cQ  
new ImprovedQuickSort(), k&wCa<Rs~R  
new MergeSort(), l2vIKc  
new ImprovedMergeSort(), @iwVU]j  
new HeapSort() b;G3&R]  
}; -c|dTZ8D)8  
AiKja>Fl<  
public static String toString(int algorithm){ X|zQZ<CO  
return name[algorithm-1]; e&sZ]{uD  
} N4]QmRX/j  
%Hx8%G!  
public static void sort(int[] data, int algorithm) { VPW@y  
impl[algorithm-1].sort(data); ^YG'p?r.s  
} sQUJ]h  
NbgK# ;  
public static interface Sort { 9'nM$ a  
public void sort(int[] data); fy]z<SPhVJ  
} Wi7!J[ B  
B_R J;.oH  
public static void swap(int[] data, int i, int j) { nb-]fa  
int temp = data; zG-pqE6  
data = data[j]; a,mG5bQ!  
data[j] = temp; DQ%bcXs  
} cj K\(b3  
} -' :;0  
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