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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。 X_|8CD-@6  
插入排序: 'rRo2oTN  
rOB-2@-  
package org.rut.util.algorithm.support; xzy7I6X  
,Vt7Kiu  
import org.rut.util.algorithm.SortUtil; [Zl  
/** ? 8S0  
* @author treeroot @h X  
* @since 2006-2-2 vyERt^z  
* @version 1.0 d37l/I  
*/ 4*l ShkL  
public class InsertSort implements SortUtil.Sort{ ,|"tLN *m  
T^aEx.`O}`  
/* (non-Javadoc) +XJj:%yt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KB7CO:  
*/ 9<WMM)  
public void sort(int[] data) { f/?# 1  
int temp; 4 Yc9Ij  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -fz |  
} .jZmQtc  
} }-)2CEj3L%  
} [U]*OQH`e  
uezqC=v$h  
} 4t|g G`QW7  
Vur$t^zE  
冒泡排序: ,`G8U/  
%U)/>Z  
package org.rut.util.algorithm.support; $91c9z;f^  
22`W*e@6h  
import org.rut.util.algorithm.SortUtil; p< '#f,o  
~o= Sxaf  
/** oU$Niw9f  
* @author treeroot m7^aa@^m  
* @since 2006-2-2 z;GnQfYG  
* @version 1.0 &'N{v@Oi)  
*/ d%81}4f:  
public class BubbleSort implements SortUtil.Sort{ c7q1;X{:  
@xm O\  
/* (non-Javadoc) v6HBO#F'V{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iT%aAVs  
*/ /lx\9S|  
public void sort(int[] data) { R?(0:f  
int temp; (i1FMd}G  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?7@B$OlU  
if(data[j] SortUtil.swap(data,j,j-1); 8uM>UpX  
} :f ybH)*  
} KFdV_e5lU  
} ]=2Ba<)m  
} b~Op1p  
d47b&.v8e  
} kUmrJBh$  
\^iJv ~d  
选择排序: rm;'/l8Y-E  
nY'0*:'u  
package org.rut.util.algorithm.support; tjBs>w  
rC14X}X6  
import org.rut.util.algorithm.SortUtil; n %"q>  
>:Na^+c  
/** "nU5c4   
* @author treeroot (\, <RC\  
* @since 2006-2-2 ?5Wjy  
* @version 1.0 @R_a'v-  
*/ sk\U[#ohH  
public class SelectionSort implements SortUtil.Sort { 1%]| O  
%UI.E=`n  
/* ]IoJ(4f  
* (non-Javadoc) mFjX  
* ,fpu@@2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,@tkL!"9q  
*/ *$Z}v&-0k  
public void sort(int[] data) { iN"kv   
int temp; II3)Cz}xRG  
for (int i = 0; i < data.length; i++) { :@rE&  
int lowIndex = i; XpdDIKMmE  
for (int j = data.length - 1; j > i; j--) { #25Z,UU  
if (data[j] < data[lowIndex]) { }7RR",w  
lowIndex = j; [pUw(KV2m  
} wV+ W(  
} -X'HZ\)  
SortUtil.swap(data,i,lowIndex); UZi^ &  
} gYA|JFi  
} zIi|z}WJ  
NEa :  
} =dHM)OXD"  
d=o|)kV  
Shell排序: FAfk;<#'n+  
x9Y1v1!5Pu  
package org.rut.util.algorithm.support; UQ:H3  
.mn`/4  
import org.rut.util.algorithm.SortUtil; 53J!iNnXT6  
{UX?z?0T  
/** gV$j ]  
* @author treeroot -$f~V\M  
* @since 2006-2-2 X|q&0W=  
* @version 1.0 g34<0%6jd  
*/ K]Q#B|_T  
public class ShellSort implements SortUtil.Sort{ t 9&xk?%{  
((Ak/qz  
/* (non-Javadoc) ;&q}G1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I@+h| n  
*/ svCD&~|K#  
public void sort(int[] data) { 9h> nP8  
for(int i=data.length/2;i>2;i/=2){ XAW$"^p  
for(int j=0;j insertSort(data,j,i); %'a%ynFs  
} 1uZ[Ewl]  
} jl;_lcO  
insertSort(data,0,1); rL3<r  
} mEfI2P)#|  
dF:@BEo  
/** QO0}-wZR  
* @param data ']Gqa$(YC  
* @param j k__iJsk  
* @param i XAwo ~E  
*/ Zk4Hs%n  
private void insertSort(int[] data, int start, int inc) { GR@!mf  
int temp; 7cW9@xPe  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X ,n4_=f  
} &lbxmUeU  
} <`k\kZM  
} Ni#!C:q  
{e\Pd!D?|  
} 'bJ!~ML&  
_*7h1[,{f  
快速排序: ?YWfoH4mS  
, (dg]7  
package org.rut.util.algorithm.support; +%Q:  
,A`d!{]5  
import org.rut.util.algorithm.SortUtil; 0{^vqh.La  
zI$^yk-vn  
/** &E0L7?l  
* @author treeroot l9KL P  
* @since 2006-2-2 }IO<Dq=[  
* @version 1.0 )b`Xc+{>  
*/ +PgUbr[p  
public class QuickSort implements SortUtil.Sort{ 5LdVcXf  
{*,~,iq  
/* (non-Javadoc) "X0"=1R~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aDmyr_f$  
*/ 'kb5pl~U  
public void sort(int[] data) { Gdmh#pv  
quickSort(data,0,data.length-1); T6m#sVq  
} C~4_Vc*  
private void quickSort(int[] data,int i,int j){ 1^XuH('  
int pivotIndex=(i+j)/2; ' N^\9X0  
file://swap d0Xb?- }3M  
SortUtil.swap(data,pivotIndex,j); ^`~M f  
_;(`u!@/{  
int k=partition(data,i-1,j,data[j]); rqW[B/a{  
SortUtil.swap(data,k,j); Ls{z5*<FM  
if((k-i)>1) quickSort(data,i,k-1); z%$ E6Im  
if((j-k)>1) quickSort(data,k+1,j); oFM\L^Y?$$  
psyxNM=dN#  
} wgfA\7Z  
/** .] mYpz  
* @param data 9qN4f8R  
* @param i oJa6)+b(3  
* @param j YL-/z4g  
* @return Z?X0:WK  
*/ _OV\W'RrA  
private int partition(int[] data, int l, int r,int pivot) { w}No ^.I*4  
do{ 6(awO2{BP  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N`XJA-DE  
SortUtil.swap(data,l,r); D,q=?~  
} g?` g+:nug  
while(l SortUtil.swap(data,l,r); .w2QiJ  
return l; i)9}+M 5  
} ;,P-2\V/  
QR4rQu  
} &7z79#1NS  
U<,@u,_Ja  
改进后的快速排序: aEU[k>&  
]@X5'r"  
package org.rut.util.algorithm.support; z@;]Hy  
e~R; 2bk  
import org.rut.util.algorithm.SortUtil; .{sKEVK  
<"A|Xv'Q  
/** ^?PU:eS  
* @author treeroot Z0&^U#]  
* @since 2006-2-2 <i{O\K]9  
* @version 1.0 N<lejZ}!q  
*/ w1HE^ /  
public class ImprovedQuickSort implements SortUtil.Sort { I@Zd<Rn  
<X[TjP  
private static int MAX_STACK_SIZE=4096; 'F%4[3a$\n  
private static int THRESHOLD=10; n][/c_]q  
/* (non-Javadoc) 3ThBy'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2WQKj9iyN  
*/ =B4,H=7Spf  
public void sort(int[] data) { HUqG)t*c1  
int[] stack=new int[MAX_STACK_SIZE]; Oop5bg  
F*V<L   
int top=-1; <!b~7sZkTc  
int pivot; }$M 2XF  
int pivotIndex,l,r; q/y4HT,x  
MuNM)pyxp  
stack[++top]=0; 5`qt82Qm  
stack[++top]=data.length-1; H`u8}{7  
,M2u (9  
while(top>0){ $YZsaw  
int j=stack[top--]; lv -z[  
int i=stack[top--]; 1d/-SxhZ  
AA][}lU:5  
pivotIndex=(i+j)/2; z_qy >  
pivot=data[pivotIndex]; .5Y%I;~v  
EvZ;i^.8LS  
SortUtil.swap(data,pivotIndex,j); *9:oTN  
GC?X>AC:  
file://partition I9O9V[  
l=i-1; RmS|X"zc  
r=j; Z(Da?6#1  
do{ +pYrAqmO-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sYV7t*l  
SortUtil.swap(data,l,r); []HMUL]"  
} 5.gM]si  
while(l SortUtil.swap(data,l,r); u] C/RDTH  
SortUtil.swap(data,l,j); TymE(,1  
,w~0U  
if((l-i)>THRESHOLD){ rM<lPMr1*  
stack[++top]=i; Bvzu{B%  
stack[++top]=l-1; -H1mKZDPP  
} 2p\CCzw  
if((j-l)>THRESHOLD){ ~wnTl[:  
stack[++top]=l+1; 6OYXcPW'  
stack[++top]=j; #Mo`l/Cwp  
} :}d`$2Dz  
J ytY6HF  
} <S~_|Y*v  
file://new InsertSort().sort(data); IOA"O9;  
insertSort(data); p.KX[I  
} M99#\0=/  
/** i`o}*`//  
* @param data =H*}{'#  
*/ shW$V93<  
private void insertSort(int[] data) { U3r[ysf  
int temp; {MmHR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `@GqD  
} 9k\`3SE  
} =! v.VF\;  
} ;t47cUm6j  
*S_e:^  
} | \Nj  
{zoUU  
归并排序: &tY3nr  
_`lj 3Lm0>  
package org.rut.util.algorithm.support; u2HkAPhD  
pAS!;t=n,  
import org.rut.util.algorithm.SortUtil; 9 x WC<i  
KDwz!:ye  
/** htc& !m  
* @author treeroot \RN,i]c-g/  
* @since 2006-2-2 -_=0PW5{  
* @version 1.0 '!`%!Xg  
*/ j0J}d _  
public class MergeSort implements SortUtil.Sort{ ~82[pY  
o?\)!_Z|  
/* (non-Javadoc) Ore$yI}!m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t}-[^|)7  
*/ ]D^dQ%{  
public void sort(int[] data) { 'Z2:u!E  
int[] temp=new int[data.length]; r}) 2-3ZA9  
mergeSort(data,temp,0,data.length-1); gA ]7YHc  
} zx^]3}  
h}xUZ:  
private void mergeSort(int[] data,int[] temp,int l,int r){ &d`T~fl|  
int mid=(l+r)/2; 0 eZfHW&  
if(l==r) return ; H"(:6 `  
mergeSort(data,temp,l,mid); ^}; 4r  
mergeSort(data,temp,mid+1,r); 0?uX}8w  
for(int i=l;i<=r;i++){ XfA3Ez,}  
temp=data; zM6 yUEg  
} 3_=~7B) 8  
int i1=l; CCKg,v  
int i2=mid+1; WtI1h`Fo  
for(int cur=l;cur<=r;cur++){ H3{x; {.b  
if(i1==mid+1) xO'I*)  
data[cur]=temp[i2++]; ~45u a  
else if(i2>r) GZT}aMMSJ  
data[cur]=temp[i1++]; }C>Q  
else if(temp[i1] data[cur]=temp[i1++]; zi:F/TlUC  
else /2^cty.BXw  
data[cur]=temp[i2++]; J*6I@_{/ U  
} E%ea o$  
} 3ojK2F(1D  
.fcU&t  
} |Y3!Lix  
AIsM:sV]  
改进后的归并排序: 2'g< H-[  
=fMSmn1S  
package org.rut.util.algorithm.support; O{8"f\*  
^ )N[x''a  
import org.rut.util.algorithm.SortUtil; ^&<~6y}U^  
47I:o9E  
/** >_M}l @1  
* @author treeroot >V(>2eD'S  
* @since 2006-2-2 .jMm-vox}  
* @version 1.0 43rM?_72  
*/ "FQh^+  
public class ImprovedMergeSort implements SortUtil.Sort { @_YEK3l]l  
b{)('C$  
private static final int THRESHOLD = 10; TI}H(XL(  
 .Pq8C  
/* qx 3.oU  
* (non-Javadoc) k/l@P  
* 4,9AoK)yp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =f@O~nGm  
*/ tYIHsm\b  
public void sort(int[] data) { IyG5Rj2  
int[] temp=new int[data.length]; (PGmA>BT  
mergeSort(data,temp,0,data.length-1); (Br$(XJoK}  
} ?>MD/l(l  
e<5+&Cj  
private void mergeSort(int[] data, int[] temp, int l, int r) { x$CpUy{6  
int i, j, k; 'R_U,9y`  
int mid = (l + r) / 2; D,xWc|V  
if (l == r) qt]QO1pAd  
return; v,vTRrpK  
if ((mid - l) >= THRESHOLD) 0!=e1_  
mergeSort(data, temp, l, mid); .Q"3 [  
else OdQ >h$ gZ  
insertSort(data, l, mid - l + 1); o0-e,F>u  
if ((r - mid) > THRESHOLD) XBhWj\`(T  
mergeSort(data, temp, mid + 1, r); QOuy(GY  
else bI[!y#_z4  
insertSort(data, mid + 1, r - mid); +WPi}  
V.WfP*~NJ  
for (i = l; i <= mid; i++) { /6{`6(p  
temp = data; B2d$!Any  
} >0 !J]gK  
for (j = 1; j <= r - mid; j++) { 4\pA^%73  
temp[r - j + 1] = data[j + mid]; }SitT\%  
} w%S<N  
int a = temp[l]; 5K'EuI)  
int b = temp[r]; 7i{Rn K6*  
for (i = l, j = r, k = l; k <= r; k++) { rQ}4\PTi  
if (a < b) { qIjC-#a=m  
data[k] = temp[i++]; PB>p"[ap4  
a = temp; W/oRt<:E  
} else { N(vbo  
data[k] = temp[j--]; OpxVy _5,  
b = temp[j]; yD1*^~loJ  
} 2DQ'h}BI  
} u-UUF  
} ?^BsR  
1@)]+* F*z  
/** gbpm::  
* @param data k6JB%m\E  
* @param l $pk3d+0B  
* @param i i`&yPw  
*/ ]kb%l"&  
private void insertSort(int[] data, int start, int len) { vzi=[A  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &8"a7$  
} 344,mnAd  
} j,/o0k,  
} W\.f:"2qr  
} /<:9NP'^  
;x^&@G8W`  
堆排序: EoU}@MjM~  
;ok];4`a  
package org.rut.util.algorithm.support; 5B'-&.Aj+  
%c^]Rdl  
import org.rut.util.algorithm.SortUtil; h>mQ; L  
A!^K:S:@  
/** /bCrpcH  
* @author treeroot fS#/-wugOB  
* @since 2006-2-2 &tMvs<q,  
* @version 1.0 @1n0<V /  
*/ 3tXtt@Yy  
public class HeapSort implements SortUtil.Sort{ eg(xN/D  
{h9#JMIA  
/* (non-Javadoc) );))kYr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zN5i}U=|r  
*/ "6Dz~5  
public void sort(int[] data) { nt;A7pI`  
MaxHeap h=new MaxHeap(); yE"hgdL  
h.init(data); )W57n)]  
for(int i=0;i h.remove(); ~fCD#D2KU  
System.arraycopy(h.queue,1,data,0,data.length); -HoPECe  
} J=zZGd%  
GQF7]j/  
private static class MaxHeap{ (59<Zo  
yv3my aS  
void init(int[] data){ |lJXI:G G  
this.queue=new int[data.length+1]; 1pzU=!R?-O  
for(int i=0;i queue[++size]=data; D%^EG8i n.  
fixUp(size); \XRViG,|5  
} ?-@h Nrx  
} ^[zF_df  
<R3S{ ty  
private int size=0; EXJ>Z  
B/5C jHz  
private int[] queue; ev8 E.ehD  
}1R k]$XC  
public int get() { {+C>^b  
return queue[1]; I5x/N.  
} &7@6Y{!/  
2Y wV}  
public void remove() { 5j ]}/Aq  
SortUtil.swap(queue,1,size--); {xM%3  
fixDown(1); ~]"}s(J;  
} Q;5\( 0w5  
file://fixdown HwU \[f  
private void fixDown(int k) { *3 9sh[*}  
int j; 3N]pN<3@  
while ((j = k << 1) <= size) { _&F6As !{  
if (j < size %26amp;%26amp; queue[j] j++; /o|@]SAe.  
if (queue[k]>queue[j]) file://不用交换 e'\I^'`!M  
break; p~3CXmUc~  
SortUtil.swap(queue,j,k); ; $y.+5 q  
k = j; R4IFl z  
} xY!]eLZ)&  
} 3I"&Qp%2  
private void fixUp(int k) { K] Eq"3  
while (k > 1) { sS-5W-&P{T  
int j = k >> 1; mD)Nh  
if (queue[j]>queue[k]) 8<]> q  
break; a?JU(  
SortUtil.swap(queue,j,k); x(S 064  
k = j; /@wm?ft6Gk  
} wh*OD  
} q1?2 U<  
x7NxHTL  
} RIJBHOa  
}*R" yp  
} :m37Fpz&b  
^2mXXAQf7^  
SortUtil: }>Os@]*'^(  
w:umr#  
package org.rut.util.algorithm; *:&fw'vd,  
-9aht}Z  
import org.rut.util.algorithm.support.BubbleSort; 'm2,7]  
import org.rut.util.algorithm.support.HeapSort; 5T   
import org.rut.util.algorithm.support.ImprovedMergeSort; ?L'k2J  
import org.rut.util.algorithm.support.ImprovedQuickSort; S>"dUM  
import org.rut.util.algorithm.support.InsertSort; s#d# *pgzh  
import org.rut.util.algorithm.support.MergeSort; 5X`.2q=d  
import org.rut.util.algorithm.support.QuickSort; 7PisX!c,h  
import org.rut.util.algorithm.support.SelectionSort; C&5T;=<jKO  
import org.rut.util.algorithm.support.ShellSort; y!v$5wi  
@{ nT4{  
/** Vm6^'1CY  
* @author treeroot 1%-?e``.  
* @since 2006-2-2 MiSFT5$v6  
* @version 1.0 Ab(bvS8r$  
*/ Cog:6Gnw  
public class SortUtil { c3 wu&*p{  
public final static int INSERT = 1; tXp)o >"  
public final static int BUBBLE = 2; 2XI%4  
public final static int SELECTION = 3; [{zekF~)@  
public final static int SHELL = 4; +6;OB@  
public final static int QUICK = 5; w1KQ9H*  
public final static int IMPROVED_QUICK = 6; r} ,|kb  
public final static int MERGE = 7; &pmJ:WO,h  
public final static int IMPROVED_MERGE = 8; hqBwA1](a  
public final static int HEAP = 9; |RjjP 7  
R 7{ rY  
public static void sort(int[] data) { }Ns_RS$  
sort(data, IMPROVED_QUICK); sP+S86 u  
} ' l!QGKz  
private static String[] name={ lhjPS!A~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &c\8` # 6  
}; T4f:0r;^f*  
mWGT (`|~/  
private static Sort[] impl=new Sort[]{ Awr]@%I  
new InsertSort(), 5S7Z]DXiT8  
new BubbleSort(), CY 7REF  
new SelectionSort(), v(t&8)Uu  
new ShellSort(), | 'z)RFqj  
new QuickSort(), m# SZI}  
new ImprovedQuickSort(), :qT>m  
new MergeSort(), my} P\r.  
new ImprovedMergeSort(), 3 (}?f  
new HeapSort() A5/h*`Q\\  
}; t)m4"p7  
_rR.Y3N  
public static String toString(int algorithm){ a%]p*X!  
return name[algorithm-1]; 2xnOWW   
} h T Xc0  
~j 4=PT  
public static void sort(int[] data, int algorithm) {  LSfj7j`  
impl[algorithm-1].sort(data); (*;u{m=  
} jG^~{7#  
A9R}74e4g  
public static interface Sort { 3n/L; T,X  
public void sort(int[] data); Jg Xbs+.  
} Z g'[.wov  
2 43DdIG$  
public static void swap(int[] data, int i, int j) { "*T)L<G  
int temp = data; [cH/Y2[  
data = data[j]; C4G)anT  
data[j] = temp; '*-SvA\Cx  
}  I&v B\A  
} ~kHir]jc  
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