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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。 Xout:dn  
插入排序: v` $%G  
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package org.rut.util.algorithm.support; *h:D|4oJ(  
df^0{gNHx  
import org.rut.util.algorithm.SortUtil; m[W/j/$A+x  
/** N6WPTUQ1mF  
* @author treeroot rykj2/O  
* @since 2006-2-2 8-A:k E  
* @version 1.0 gU+ss  
*/ 1z3]PA!R  
public class InsertSort implements SortUtil.Sort{ \FVNXU MU  
X:U=MWc>  
/* (non-Javadoc) u |'8a1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k?< i*;7  
*/ !ZX&r{pJp  
public void sort(int[] data) { #s*k| j}  
int temp; }iMXXXBOT  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K[e`t%2_  
} xUIvLH=  
} gt~9"I  
} e~3]/BL  
@`5QG2  
} gji*Wq  
Qg[heND  
冒泡排序: b$dBV}0 L  
 8>ESD}(  
package org.rut.util.algorithm.support; xC'mPcU8  
t?KUK>>w  
import org.rut.util.algorithm.SortUtil; ::v;)VdX+*  
Z>X9J(=  
/** uW ) \,  
* @author treeroot 1k$2LQ  
* @since 2006-2-2 FMoJ"6Q  
* @version 1.0 0 4P.p6  
*/ [+y &HNf  
public class BubbleSort implements SortUtil.Sort{ h] <GTWj  
_cR6ik zW(  
/* (non-Javadoc) NS h%t+XU]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?0 HR(N(z!  
*/ m\_+)eI|  
public void sort(int[] data) { L7X7Zt8%  
int temp; 3(MoXA*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2XzF k_6H  
if(data[j] SortUtil.swap(data,j,j-1); $K`_ K#A  
} fDL3:%D  
} Yd[U  
} ~(stA3]k  
} ;9}w|!/  
_c[|@D  
} 3xRM 1GgO  
mp!YNI  
选择排序: 3Wjq>\  
qi( &8in  
package org.rut.util.algorithm.support; XAw2X;F%  
lQ+Ru8I  
import org.rut.util.algorithm.SortUtil; sq6>DuBZz  
7F,07\c  
/** fKFnCng  
* @author treeroot ixIh T  
* @since 2006-2-2 )ZQHa7V  
* @version 1.0 2r %>]y  
*/ 9 aY'0wa  
public class SelectionSort implements SortUtil.Sort { 65'`uuPx  
8FAT(f//.  
/* ^!q 08`0  
* (non-Javadoc) r5D jCV"  
* <9=zP/Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cw6>^  
*/ n>u.3w L  
public void sort(int[] data) { iU.!oeR?  
int temp; -b].SG5S  
for (int i = 0; i < data.length; i++) { 1R5Yn(  
int lowIndex = i; YI L'YNH  
for (int j = data.length - 1; j > i; j--) { <sm#D"GpP  
if (data[j] < data[lowIndex]) { $5ZR [\$  
lowIndex = j; UAnB=L,.\  
}  fn4=  
} ~C%2t{"  
SortUtil.swap(data,i,lowIndex); _`TepX R  
} Rbx97(wK  
} kJHr&=VO~  
U* -% M  
} i6-wf Gs;  
Mr$# e  
Shell排序:  aeEw#  
3Cq6h;!#  
package org.rut.util.algorithm.support; ,O$Z,J4VL  
);0<Odw%.  
import org.rut.util.algorithm.SortUtil; =6.8bZT\  
:&xz5c`"04  
/** 83mlZ1jQz  
* @author treeroot ev~dsk6k  
* @since 2006-2-2 6\; 4 4,3  
* @version 1.0 D=jS h  
*/ Q2JdO 6[96  
public class ShellSort implements SortUtil.Sort{ RpBiE8F4  
KC&H*  
/* (non-Javadoc) SNQz8(O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mgmWDtxN  
*/ Ah6wU|_-g  
public void sort(int[] data) { A ~qW.  
for(int i=data.length/2;i>2;i/=2){ qFvg}}^y  
for(int j=0;j insertSort(data,j,i); 3$GY,B  
} SZCF3m&pz  
} aO~s i=  
insertSort(data,0,1); L~@ma(TV{K  
} v[0DE*p  
E"Ya-8d=  
/** kWzuz#  
* @param data + AE&GU  
* @param j )2iM<-uB  
* @param i A8=e?%  
*/ k! J4Z ${k  
private void insertSort(int[] data, int start, int inc) { eXj\DjttG}  
int temp; \(.nPW]9  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0_YxZS\  
} BP)q6?Mz  
} B'WCN&N  
} kvMk:.  
ti$oZ4PpF  
} N&6_8=3z  
b@nri5noBm  
快速排序: .`oJcJ  
b &\3ps  
package org.rut.util.algorithm.support; /#S4espE  
W&fW5af9  
import org.rut.util.algorithm.SortUtil; @4 zi]v  
ek<PISlci  
/** hQgk.$g  
* @author treeroot FRl3\ZDqrb  
* @since 2006-2-2 oV0LJ%  
* @version 1.0 ga4/,   
*/ e%P+KX  
public class QuickSort implements SortUtil.Sort{ #6Efev  
_n-VgPRn  
/* (non-Javadoc) v#Cz&j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W0+gfg  
*/ 37j\D1Y  
public void sort(int[] data) { mQwk!* U  
quickSort(data,0,data.length-1); t9Enk!@  
} "D ts*  
private void quickSort(int[] data,int i,int j){ Wrf^O2  
int pivotIndex=(i+j)/2; _&k'j)rg  
file://swap 4A\BGD*5  
SortUtil.swap(data,pivotIndex,j); U^E  
p9FA_(`^  
int k=partition(data,i-1,j,data[j]); )LXoey!aZ  
SortUtil.swap(data,k,j); v`[Tl  
if((k-i)>1) quickSort(data,i,k-1); %v?jG(o  
if((j-k)>1) quickSort(data,k+1,j); AijPN  
"E@NZ*"u  
} R-r+=x&  
/** 4*p_s8> >  
* @param data R9b/?*%=9  
* @param i !$:0E y(S  
* @param j M iP[UCh  
* @return Wo:zU  
*/ otmIu`h  
private int partition(int[] data, int l, int r,int pivot) { Yv#J`b@y  
do{ |'V<>v.v  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); IqvqvHxLX  
SortUtil.swap(data,l,r); _~X8/p/Qh  
} B-y0;0  
while(l SortUtil.swap(data,l,r); x'E'jh%  
return l; [?|l X$<  
} lKh2LY=j  
N>&{Wl'y\  
} P.[6s$J  
ZI2K-z'e  
改进后的快速排序: gmF_~"^34  
Bo](n*i  
package org.rut.util.algorithm.support; p`E|SNt/W  
f"5lOzj`C  
import org.rut.util.algorithm.SortUtil; <r_P? lZW  
>5Q^9 9V  
/** p^pQZ6-  
* @author treeroot "VT{1(]t  
* @since 2006-2-2 OCbQB5k3  
* @version 1.0 nhVK?  
*/ TnvHO_P,  
public class ImprovedQuickSort implements SortUtil.Sort { .G5NGB  
IEno.i\  
private static int MAX_STACK_SIZE=4096; Z`-)1!  
private static int THRESHOLD=10; ^F0k2pB  
/* (non-Javadoc) 2- Npw%;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x*loACee.  
*/ GsP@ B'  
public void sort(int[] data) { `@f hge  
int[] stack=new int[MAX_STACK_SIZE]; hQg,#r(JE4  
|: 7EJkKZ  
int top=-1; 9}%~w(P  
int pivot; |kBg8).B  
int pivotIndex,l,r; M(.uu`B  
)[y!m9Vn  
stack[++top]=0; )H[h53bIq  
stack[++top]=data.length-1; _H^^2#wc/  
HobGl0<y  
while(top>0){ haEZp6Z  
int j=stack[top--]; *#prSS  
int i=stack[top--]; \28b_,i+  
bBeFL~  
pivotIndex=(i+j)/2; mR" 2  
pivot=data[pivotIndex]; M\Uc;:) H  
Mv7w5vTl  
SortUtil.swap(data,pivotIndex,j); FT3,k&i  
~n8Oyr  
file://partition PK.h E{R  
l=i-1; {|Mxvp*Hg  
r=j; k$$S!qi#  
do{ 4AJu2Hp  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;*>QG6Fh  
SortUtil.swap(data,l,r); ]Vf8mkDGO  
} M@!]U:5~V  
while(l SortUtil.swap(data,l,r); o5*74Mv  
SortUtil.swap(data,l,j); h|c:!VN@  
T(sG.%  
if((l-i)>THRESHOLD){ Zi<Sw  
stack[++top]=i; JhMrm%  
stack[++top]=l-1;  |(J ?#?  
} Sg_-OX@f  
if((j-l)>THRESHOLD){ X_0{*!v8  
stack[++top]=l+1; oSu|Yn  
stack[++top]=j; "EOk^1,y  
} eSvc/CU  
;4S [ba1/  
} :r vO8.\  
file://new InsertSort().sort(data); ) <}VP&:X  
insertSort(data); hIzPy3  
} %~B)~|h  
/** Tg <>B  
* @param data QRg"/62WCD  
*/ 4Rrw8Bw  
private void insertSort(int[] data) { =CG!"&T  
int temp; \K_!d]I {  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T,xVQ4J?  
} Y bn=Gy  
} VxPTh\O*[  
} ;8%@Lan  
Ivt)Eg  
} ?4wehcZz  
?Qo_ KQ%sn  
归并排序: =An Z>6  
psyH?&T  
package org.rut.util.algorithm.support; 0+2Matk>.  
O'&X aaZV  
import org.rut.util.algorithm.SortUtil; fdCxMKlu;  
g`~lIt [=  
/** mISu o  
* @author treeroot rvoS52XG,  
* @since 2006-2-2 yNWbI0a  
* @version 1.0 W"}*Q -8W  
*/ 6M<mOhp@}n  
public class MergeSort implements SortUtil.Sort{ N8L)KgM5#7  
V"2AN3~&  
/* (non-Javadoc) [hv3o0".  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n_xQSVI0F  
*/ #r:Kg&W2FO  
public void sort(int[] data) { :hl}Z n~jt  
int[] temp=new int[data.length]; 9/X v&<Tn  
mergeSort(data,temp,0,data.length-1); fbx;-He!  
} +}G>M=t::  
i/ O,`2  
private void mergeSort(int[] data,int[] temp,int l,int r){ &' Nk2{  
int mid=(l+r)/2; $CQwBsYb=  
if(l==r) return ; j9L+.UVI,  
mergeSort(data,temp,l,mid); C(%5,|6  
mergeSort(data,temp,mid+1,r); ,rl <ye*&  
for(int i=l;i<=r;i++){ rY_C3;B  
temp=data; -JyODW#j  
} n4r( Vg1GS  
int i1=l; i_ODgc`H  
int i2=mid+1; ~RR_[t2Z  
for(int cur=l;cur<=r;cur++){ z7l;|T  
if(i1==mid+1) `aWwF} +Y  
data[cur]=temp[i2++]; 2h? r![  
else if(i2>r) ^kR^ QL$  
data[cur]=temp[i1++]; {'wU&!  
else if(temp[i1] data[cur]=temp[i1++]; 1^H<+0  
else ^)0{42!]  
data[cur]=temp[i2++]; d8BK/b  
} KJvJUq  
} 6'sFmC  
x_H7=\pX]  
} PEQvEruZ}  
-m x3^  
改进后的归并排序: n5,Pq+[  
&<#BsFz  
package org.rut.util.algorithm.support; 3xCA\*  
C;:1CK  
import org.rut.util.algorithm.SortUtil; CyBM4qyH  
23n8,} H,  
/** WCfe!P?g  
* @author treeroot 9:Z~}yX  
* @since 2006-2-2 szsZFyW )+  
* @version 1.0 , LPFb6o  
*/ zH\;pmWiN9  
public class ImprovedMergeSort implements SortUtil.Sort { j n&9<"W  
r;6YCI=z  
private static final int THRESHOLD = 10; 0R^(rE"2#  
VV}fW"_ND  
/* {ZIFj.2  
* (non-Javadoc) Mp @(/  
* w-Q 6 -  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3<' Q`H>  
*/ 3L!&~'.Ro  
public void sort(int[] data) { nTtt$I@hW  
int[] temp=new int[data.length]; yNMwd.r[  
mergeSort(data,temp,0,data.length-1); vhe Ah`u^&  
} OFAqP1o{$  
{R8P $  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0@/E% T1c"  
int i, j, k; m&z %kVsg]  
int mid = (l + r) / 2; 7;s0m0<%~  
if (l == r) :)V0zHo&(  
return; hG3$ ]i9  
if ((mid - l) >= THRESHOLD) ~i&< !O&  
mergeSort(data, temp, l, mid); ToXFMkwY  
else y2% ^teX k  
insertSort(data, l, mid - l + 1);  F-\8f(\  
if ((r - mid) > THRESHOLD) tlxjs]{0E  
mergeSort(data, temp, mid + 1, r); kd4*Zab  
else +n~rM'^4/  
insertSort(data, mid + 1, r - mid); 9M~$W-5  
Pg8=  
for (i = l; i <= mid; i++) { 8}`8lOE7  
temp = data; .Fz6+m;Z  
} *M!YQ<7G^d  
for (j = 1; j <= r - mid; j++) { |/Q."d  
temp[r - j + 1] = data[j + mid]; 3LnyQ  
} 9l^  
int a = temp[l]; M,U=zNPnk  
int b = temp[r]; NeZYchR  
for (i = l, j = r, k = l; k <= r; k++) { F4{. 7BT  
if (a < b) { 7ofH@U  
data[k] = temp[i++]; m3!MHe~t  
a = temp; TV>R(D3T/  
} else { 8;BwzRtgT  
data[k] = temp[j--]; `TR9GWU+B  
b = temp[j]; "uER a(i  
} w]YyU5rhS  
} ej53O/hP  
} .0;k|&eBD  
0YRYCO$  
/** _q4dgi z  
* @param data CbaAnm1  
* @param l QMpA~x_m  
* @param i (eIxU&o'  
*/ Y0C<b*!"ST  
private void insertSort(int[] data, int start, int len) { N<r0I-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); X10TZ  
} <1%XN  
} ieoUZCO^r\  
} ,r,;2,;6nd  
} ;j\$[4W.i  
~(P\F&A(&  
堆排序: >h-6B=  
?Lb7~XKt\  
package org.rut.util.algorithm.support; Ps5wQaS  
YZu# 0)  
import org.rut.util.algorithm.SortUtil; #Z 5Wk  
3>3ZfFC  
/** KEB>}_[  
* @author treeroot /FZ )ej\  
* @since 2006-2-2 tD482Sb=  
* @version 1.0 U,}T ]J  
*/ T $]L 5  
public class HeapSort implements SortUtil.Sort{ >a~FSZf  
\V\ET  
/* (non-Javadoc) TbM*?\7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `.Q3s?1F  
*/ } j@@  
public void sort(int[] data) { \>k#]4@rp  
MaxHeap h=new MaxHeap(); aVL%-Il}  
h.init(data); xH-k~#  
for(int i=0;i h.remove(); (?wKBUi  
System.arraycopy(h.queue,1,data,0,data.length); Mo r-$a8  
} #`wfl9tj  
R.$Y1=U6  
private static class MaxHeap{ ^Iq.0E9_  
6j![m+vo%  
void init(int[] data){ l),13"?C(  
this.queue=new int[data.length+1]; 32'9Ch.  
for(int i=0;i queue[++size]=data; %R"nm  
fixUp(size); :#KURYO<  
} } +Z;zm@/6  
} ttt&sW`  
&,|uTIs  
private int size=0; ".Z+bi2l  
=v"{EmT[$  
private int[] queue; !t{!.  
ozwqK oE  
public int get() { r/:'}os;  
return queue[1]; 0 1w/,r  
} $l"(tB7d  
0tyU%z{RV  
public void remove() { Li$k<AM  
SortUtil.swap(queue,1,size--); 'v)+S;oB  
fixDown(1); gvt4'kp  
} 0kEq|k9  
file://fixdown skArocs  
private void fixDown(int k) { RtEkd_2  
int j; l'R`XGT  
while ((j = k << 1) <= size) { 88U  
if (j < size %26amp;%26amp; queue[j] j++; Qp Vm  
if (queue[k]>queue[j]) file://不用交换 Kwau:_B  
break; 1 .k}gl0<  
SortUtil.swap(queue,j,k); ~kFRy{z  
k = j; GoXHVUyp  
} Z)~4)71Y:  
} I9aber1  
private void fixUp(int k) { {(Z1JoSl  
while (k > 1) {  .l'QCW9  
int j = k >> 1; (P_+m#  
if (queue[j]>queue[k]) AIo;\35  
break; RH'R6  
SortUtil.swap(queue,j,k); J#nEGl|a  
k = j; SjU6+|l  
} m8`A~  
} 1 crjRbi  
Xb;`WE gC  
} 6P $q7G  
?!vW&KJZx  
} .=D6<4#t  
!qq@F%tv  
SortUtil: 1Pc'wfj  
?RyvM_(N6  
package org.rut.util.algorithm; U:(t9NX b  
/iy/2x28>  
import org.rut.util.algorithm.support.BubbleSort; Vngi8%YWp  
import org.rut.util.algorithm.support.HeapSort; / nRaxzf'  
import org.rut.util.algorithm.support.ImprovedMergeSort; '?4[w]0J<  
import org.rut.util.algorithm.support.ImprovedQuickSort; O#k+.LU  
import org.rut.util.algorithm.support.InsertSort; :oQaN[3>_  
import org.rut.util.algorithm.support.MergeSort; o!d0  
import org.rut.util.algorithm.support.QuickSort; rkp0ej2-  
import org.rut.util.algorithm.support.SelectionSort; o)DKP>IM#  
import org.rut.util.algorithm.support.ShellSort; JJa?"82FXZ  
%vzpp\t  
/** jws(`mIf\  
* @author treeroot RUO6Co-  
* @since 2006-2-2 IS~oyFS  
* @version 1.0 !Zx>)V6.  
*/  7dIDKx  
public class SortUtil { YN3uhd[2  
public final static int INSERT = 1; SuSZ,>  
public final static int BUBBLE = 2; Kxn=iv^Ir  
public final static int SELECTION = 3; }qg&2M%\  
public final static int SHELL = 4; #{a<{HX  
public final static int QUICK = 5; (C|%@61S  
public final static int IMPROVED_QUICK = 6; zyE yZc?  
public final static int MERGE = 7; 7va%-&.&t  
public final static int IMPROVED_MERGE = 8; >@o*v*25  
public final static int HEAP = 9; T9 1Iz+j  
JKGZ0yn  
public static void sort(int[] data) { 9:>vl0  
sort(data, IMPROVED_QUICK); yo=d"*E4^  
} O jmz/W  
private static String[] name={ G})mw  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" XafyI*pOX  
}; E&AR=yqk  
5irOK9hK  
private static Sort[] impl=new Sort[]{ ah.Kb(d:  
new InsertSort(), WJWrLu92\U  
new BubbleSort(), NgQl;$  
new SelectionSort(), w6tY6bf}  
new ShellSort(), }#1{GhsS  
new QuickSort(), Q*5d~Yr]R  
new ImprovedQuickSort(), |k0VJi  
new MergeSort(), V^D#i(5  
new ImprovedMergeSort(), g}7B0 yo  
new HeapSort() EOiKwhrV  
}; 62q-7nV  
)/Vr 5b@  
public static String toString(int algorithm){ f.{0P-Np  
return name[algorithm-1]; ( KrIMZ  
} xHmc8G$zu  
_nt%&f  
public static void sort(int[] data, int algorithm) { cW2:D$Pe  
impl[algorithm-1].sort(data); ,$Mw/fA  
} :d;5Q\C`  
2t'&7>Ys{  
public static interface Sort { RL%{VE  
public void sort(int[] data); iT5%X   
} A@4Cfb@  
l d@^ $  
public static void swap(int[] data, int i, int j) { @ NF8?>!  
int temp = data; f{J7a1 `_  
data = data[j]; "(5}=T@,  
data[j] = temp; >; Bhl|r~z  
} 0WFZx Ad"  
} [g{}0 [ew  
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