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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。 ZT<VDcP{  
插入排序: \9R=fA18  
 ;B{oGy.  
package org.rut.util.algorithm.support; zNg[%{mz  
vPrlRG6  
import org.rut.util.algorithm.SortUtil; sDBwD%sb  
/** A~< cp)E  
* @author treeroot Tsdgg?#  
* @since 2006-2-2 w8`B}Dr23  
* @version 1.0 ?gMq:[X N  
*/ D"IxQ2}k  
public class InsertSort implements SortUtil.Sort{ 1'1>B  
7zowvE?#  
/* (non-Javadoc) ;"8BbF.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~G.MaSm  
*/ tY#Zl 54~{  
public void sort(int[] data) { G[{Av5g mx  
int temp; ! iK{q0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7/)0{B4U'  
} .Y^pDR12  
} g`)0 wP  
} h\+8eeIl  
U6YHq2<  
} 7R,;/3wWjG  
{4)d  
冒泡排序: 3r[ s_Y*  
$Z8riVJ7j-  
package org.rut.util.algorithm.support;  %\~U>3Q  
gLK0L%"5  
import org.rut.util.algorithm.SortUtil; Q /t_% vb  
>4os%T  
/** (i1p6  
* @author treeroot B;2#Sa.  
* @since 2006-2-2 3Zwhv+CP[  
* @version 1.0 t$?#@8Yk  
*/ {Q @?CT  
public class BubbleSort implements SortUtil.Sort{ cg9*+]rc  
t. DnF[  
/* (non-Javadoc) +Eel|)Z*Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NLUiNfCR  
*/ XD80]@\za  
public void sort(int[] data) { ,bP8"|e  
int temp; a %?v/Ku  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ZvK.X*~s  
if(data[j] SortUtil.swap(data,j,j-1); pimI)1 !$'  
} mP?}h  
} f*T}Ov4  
} 12: Q`   
} ac1(lD  
}9FWtXAU^1  
} -OnKvpeI  
_Ih"*~ r/&  
选择排序: +>yspOEz  
_qh \  
package org.rut.util.algorithm.support; LLoV]~dvUu  
*z0 R f;  
import org.rut.util.algorithm.SortUtil; JOs kf(  
?v'CuWS  
/** p4kK" \ln  
* @author treeroot ce719n$   
* @since 2006-2-2 "W_E!FP]r  
* @version 1.0 4ywtE}mp  
*/ fG{3S:TQq  
public class SelectionSort implements SortUtil.Sort { Cv p#=x0  
ZVit] 3hd  
/* 1f?Fuw  
* (non-Javadoc) kV3LFPf>0  
* iTF%}(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8: uh0  
*/ J%fJF//U  
public void sort(int[] data) { 6F%6]n  
int temp; % 3fpIzm  
for (int i = 0; i < data.length; i++) { "cbJ{ G1pk  
int lowIndex = i; ~4c,'k@  
for (int j = data.length - 1; j > i; j--) { @Y+kg  
if (data[j] < data[lowIndex]) { oeI[x  
lowIndex = j; t{B6W)q  
} 8 -w|~y';  
} 0t*PQ%  
SortUtil.swap(data,i,lowIndex); !L_xcov!Y  
} h-o;vC9fC  
} Oe^9pH,1t  
"'>fTk_  
} $0]5b{i]  
`eGp.[ffT  
Shell排序: @#9xSs#  
m5hu;>gt  
package org.rut.util.algorithm.support; vJW`aN1<I3  
472'P  
import org.rut.util.algorithm.SortUtil; TETfRnm  
P+3 ]g{2w  
/** 9(bbV5}  
* @author treeroot %H}M[_f  
* @since 2006-2-2 IY?o \vC  
* @version 1.0 {4%ddJn[.)  
*/ >(sS4_O7N  
public class ShellSort implements SortUtil.Sort{ A~L Ti  
u4[JDB7tH  
/* (non-Javadoc) 9s*UJIL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s2nZW pIy  
*/ 2[KHmdgtB  
public void sort(int[] data) { uLN.b339  
for(int i=data.length/2;i>2;i/=2){ 4U[X-AIY&  
for(int j=0;j insertSort(data,j,i);  ~"h V-3U  
} Q|g>ga-a  
} >Q)S-4iR  
insertSort(data,0,1); ;47=x1j i  
} 86o'3G9@  
W7IAW7w8U  
/** 9|9/8a6A  
* @param data Lf8{']3  
* @param j CY)[{r  
* @param i Xd&oERJj  
*/ z}p*";)A  
private void insertSort(int[] data, int start, int inc) { S @)P#  
int temp; b/=>'2f  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); zG&yu0;D6  
} 1rh2!4)7  
} iyMoLZ5  
} o1Wf#Zq   
r;fcBepO  
} xf{=~j/L  
X|60W  
快速排序: D\sh +}"  
dwm>! h  
package org.rut.util.algorithm.support; [wUJ ~~2#  
1 ,6Y)_  
import org.rut.util.algorithm.SortUtil; ;S+"z;$m  
r / L  
/** SxM5'KQ  
* @author treeroot PMiG:bM  
* @since 2006-2-2 o(xt%'L`t  
* @version 1.0 )/t=g  
*/ QST-!`]v  
public class QuickSort implements SortUtil.Sort{ R"QWap}  
SJ:Wr{ Or3  
/* (non-Javadoc) E%)3{# .z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ~&_BT`a  
*/ @z(s\T  
public void sort(int[] data) { BctU`.  
quickSort(data,0,data.length-1); @]%c UjQ  
} Z`@< O%  
private void quickSort(int[] data,int i,int j){ "ODs.m oq  
int pivotIndex=(i+j)/2; =]sM,E,n  
file://swap n UD;y}}n  
SortUtil.swap(data,pivotIndex,j); ':T6m=yv  
.BZ3>]F3<  
int k=partition(data,i-1,j,data[j]); $C6O<A  
SortUtil.swap(data,k,j); P.]O8r  
if((k-i)>1) quickSort(data,i,k-1); AW`+lE'?  
if((j-k)>1) quickSort(data,k+1,j); (t-JGye>  
<(2,@_~@r  
} eHI7= [h  
/** <ApzcyC  
* @param data Dad*6;+N  
* @param i `T$CUlt6  
* @param j /;r k-I  
* @return nsV;6^>  
*/ bA3pDt).p  
private int partition(int[] data, int l, int r,int pivot) { 0p ZX_L'  
do{ HVcd< :g0  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); n4Eqm33  
SortUtil.swap(data,l,r); dK?vg@|'  
} nHmi%R7k  
while(l SortUtil.swap(data,l,r); 5y|/}D>  
return l; fk:oCPo  
}  k/}E(_e  
+;wu_CQu  
} qUF}rl S=r  
L&SlUXyt.c  
改进后的快速排序: )]C7+{ImC  
vOYG&)Jm  
package org.rut.util.algorithm.support; <eG8xC  
<hbxerg  
import org.rut.util.algorithm.SortUtil; WD,iY_'7u^  
)6:nJ"j#  
/** #97w6,P+  
* @author treeroot q!+m, !M  
* @since 2006-2-2 :If1zB)  
* @version 1.0 +gQoYlso  
*/ d*xKq"+ &E  
public class ImprovedQuickSort implements SortUtil.Sort { nWAx!0G  
8P'zQ:#RV  
private static int MAX_STACK_SIZE=4096; J 4EG  
private static int THRESHOLD=10; 5w+X   
/* (non-Javadoc) Dpa PRA)x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @4N@cM0   
*/ vg5 ;F[e  
public void sort(int[] data) { C!8XFf8e  
int[] stack=new int[MAX_STACK_SIZE]; _n;V iQMu  
sA u ;i  
int top=-1; Ph*tZrd*#  
int pivot; kK[m=rTx1$  
int pivotIndex,l,r; 8UyYN$7V  
LL1HDG >l  
stack[++top]=0; T>ds<MaLP  
stack[++top]=data.length-1; g&30@D"  
GX+oA]  
while(top>0){ ?Rj)x%fN  
int j=stack[top--]; OJL?[<I  
int i=stack[top--]; )wROPA\uA  
> ^b6\  
pivotIndex=(i+j)/2; gUoTOA,  
pivot=data[pivotIndex]; "3"9sIZ(  
U0/X!@F-  
SortUtil.swap(data,pivotIndex,j); g6kVHxh-  
Nn],sEs  
file://partition E}V8+f54S  
l=i-1; d?)C} 2  
r=j; SqhG\qE{Qj  
do{ }.x&}FqXE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  d!%:Ok  
SortUtil.swap(data,l,r);  m%-  
} dM{xPpnx  
while(l SortUtil.swap(data,l,r); rQ^$)%uP  
SortUtil.swap(data,l,j); W`KRaL0^  
A3C#w J  
if((l-i)>THRESHOLD){ MXbt`]`_  
stack[++top]=i; MH+t`/E0]  
stack[++top]=l-1; =Zcbfo_&  
} RSLMO8  
if((j-l)>THRESHOLD){ 0?]*-wvp  
stack[++top]=l+1; YH( 54R  
stack[++top]=j; ]:m}nJ_  
} [WDtr8L  
YY (,H!  
} c[4  H  
file://new InsertSort().sort(data); .6yC' 3~;o  
insertSort(data); E}aTH  
} R<+K&_  
/** w1-/U+0o  
* @param data aO9a G*9T  
*/ 8m0GxgS  
private void insertSort(int[] data) { UC)-Fd  
int temp; %,-oxeM1u  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oe$Y=`  
} }4PIpDL  
} ,4hQ#x  
} !xm87I  
8v7;{4^  
} >qjQ;z[  
"pb,|U  
归并排序: ] Ma2*E !p  
Y]ML-smN  
package org.rut.util.algorithm.support; 4@D 8{?$~Q  
tkBp?Wl  
import org.rut.util.algorithm.SortUtil; 0p\cDrB ?  
^Jb=&u$  
/** wXv\[z L`  
* @author treeroot Hn%n>Bnl  
* @since 2006-2-2 DGMvYNKTj  
* @version 1.0 SG1fu<Q6J  
*/ t&+f:)n  
public class MergeSort implements SortUtil.Sort{ u%FG% j?C  
x4jn45]x@  
/* (non-Javadoc) &u-H/C U%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -,NiSh}A  
*/ EGYYSoBLU  
public void sort(int[] data) { Fv \yhR  
int[] temp=new int[data.length]; tL68 u[  
mergeSort(data,temp,0,data.length-1); ZzA4iT=KO  
} !BD+H/A.{  
;0Yeo"-  
private void mergeSort(int[] data,int[] temp,int l,int r){ f!;4 -.p`  
int mid=(l+r)/2; }Wf\\  
if(l==r) return ; )jbYWR *&  
mergeSort(data,temp,l,mid); rWKc,A[  
mergeSort(data,temp,mid+1,r); q.6$-w  
for(int i=l;i<=r;i++){ 5a1)`2V2M  
temp=data; v=15pW  
} G<9UL*HU  
int i1=l; \(Uw.ri  
int i2=mid+1; f.ku v"  
for(int cur=l;cur<=r;cur++){ D&q-L[tA@  
if(i1==mid+1) Q70LQCms  
data[cur]=temp[i2++]; /P bN!r<1  
else if(i2>r) #Jt9U1WbF  
data[cur]=temp[i1++]; YNCQPN\v`1  
else if(temp[i1] data[cur]=temp[i1++]; s^Lg*t 3I  
else 1*aw~nY0  
data[cur]=temp[i2++]; w8M,35b  
} a=*&OW  
} sqw^Hwy=!2  
@Y":DHF5q  
} '&{`^l/ MH  
D~W1["[  
改进后的归并排序: B>, O@og  
yD|He*$S  
package org.rut.util.algorithm.support; ,B ]kX/W  
Y#Pl)sRr  
import org.rut.util.algorithm.SortUtil; 1PLxc)LsG  
Q C?*O?~#  
/** QGE)Xn#_bN  
* @author treeroot {U?UM  
* @since 2006-2-2 6j9P`#Lt  
* @version 1.0 B\BxF6 y  
*/ 6|*em4  
public class ImprovedMergeSort implements SortUtil.Sort { sV{M#UF2  
O 4xV "\  
private static final int THRESHOLD = 10; '(M8D5?N-  
__jFSa`at  
/* c%,~1l  
* (non-Javadoc) Y Gb&mD  
* C"w>U   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p:]kH  
*/ V<f76U)  
public void sort(int[] data) { %j9'HtjEa  
int[] temp=new int[data.length]; s UX%{|T_  
mergeSort(data,temp,0,data.length-1); /8 /2#`3R  
} F6 ?4E"d  
ooa>~!91P  
private void mergeSort(int[] data, int[] temp, int l, int r) {  A i`  
int i, j, k; 67zCil  
int mid = (l + r) / 2; }Xv2I$J  
if (l == r) qF!oP  
return; afEhC0j  
if ((mid - l) >= THRESHOLD) nRKh|B)  
mergeSort(data, temp, l, mid);  h"<-^=b  
else Ys|n9pW  
insertSort(data, l, mid - l + 1); '5j$wr zt  
if ((r - mid) > THRESHOLD) >gNVL (  
mergeSort(data, temp, mid + 1, r);  #P8R  
else ~4YU  
insertSort(data, mid + 1, r - mid); Zi$v-b*<  
G-?y;V 1  
for (i = l; i <= mid; i++) { $J8?!Xg  
temp = data; f>d aK9$(  
} g~EJja;  
for (j = 1; j <= r - mid; j++) { P9j[ NEV  
temp[r - j + 1] = data[j + mid]; R{zAs?j  
} $`L!2  
int a = temp[l]; "PO>@tY  
int b = temp[r]; iXl6XwWT%8  
for (i = l, j = r, k = l; k <= r; k++) { {ir8n731p  
if (a < b) { >U/ m/H'  
data[k] = temp[i++]; RL =  
a = temp; 1an?/j,  
} else { (<RZZ{m  
data[k] = temp[j--]; mx`C6G5  
b = temp[j]; zqqu7.`  
} ?2D1gjr  
} I"/p^@IX  
} iQryX(z  
2u0C ~s  
/** 6wk/IJ`  
* @param data 7]}n 0*fe  
* @param l )m . KV5K!  
* @param i DQ'yFPE  
*/ /:-8 ,`  
private void insertSort(int[] data, int start, int len) { &%."$rC/0b  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {%Mt-Gm'd  
} * !4r}h`  
} ? OrRTRW  
} zd1X(e<|{  
} "YY6_qQR'  
o[C,fh,$  
堆排序: }Yd7<"kp  
,9T-\)sT  
package org.rut.util.algorithm.support; O>P792)  
)TNAgTmqK  
import org.rut.util.algorithm.SortUtil; @f<q&K%FJ  
:_ _z?<?(  
/** KW^#DI6tr  
* @author treeroot qY^OO~[  
* @since 2006-2-2 X%ii z  
* @version 1.0 !`j}%!K!  
*/ ')ZM# :G  
public class HeapSort implements SortUtil.Sort{ ruMS5OqM  
>fCz,.L  
/* (non-Javadoc) TFrZ+CcWp2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N7/eF9  
*/ ANuIPF4NxP  
public void sort(int[] data) { Yvky=RM  
MaxHeap h=new MaxHeap(); /%W&zd=%#  
h.init(data); &p/ ^A[  
for(int i=0;i h.remove(); xl.iI$P  
System.arraycopy(h.queue,1,data,0,data.length); :el]IH  
} g\%vkK&I  
ko-:) z  
private static class MaxHeap{ /, G-1E  
6 w"-&  
void init(int[] data){ ,yZvT7  
this.queue=new int[data.length+1]; ~N2<-~=si  
for(int i=0;i queue[++size]=data; lJe=z  
fixUp(size); lO?dI=}]  
} PjL"7^Q&  
} #dcfQ  
K,pQ11J  
private int size=0; nq9|cS%-  
%<4ZU!2L  
private int[] queue; u$A*Vsmr  
okl*pA)  
public int get() { :i;iSrKy  
return queue[1]; )ad-p.Hus  
} &y164xn'h  
l$j/Ye]  
public void remove() { RgF5w<Vd.  
SortUtil.swap(queue,1,size--); xPuuG{Sm  
fixDown(1); }3{ x G+,  
} cjTV~(i'4A  
file://fixdown Q/JX8<7K  
private void fixDown(int k) { 2aROY2  
int j; +W{ELdup%q  
while ((j = k << 1) <= size) { g\Ck!KJ/y  
if (j < size %26amp;%26amp; queue[j] j++; ]KsL(4PY  
if (queue[k]>queue[j]) file://不用交换 t%xD epFQ  
break;  BKiyog  
SortUtil.swap(queue,j,k); m[k@\xS4e  
k = j; WH@CH4WM  
} ]VarO'  
} 2swHJ.d\  
private void fixUp(int k) { 3,x|w  
while (k > 1) { Rds_Cd C  
int j = k >> 1; .BaU}-5  
if (queue[j]>queue[k]) g~>g])  
break; `i'72\(  
SortUtil.swap(queue,j,k); 9GH11B_A  
k = j; **].d;~[l  
} H%}ro.u  
} `^mPq?f  
'+@q  
} {C% #r@6  
~E]ct F  
} _8-iO.T+2  
+Wr"c  
SortUtil: eM3-S=R?<g  
|zJxR_)  
package org.rut.util.algorithm; 3G4N0{i  
=V)88@W  
import org.rut.util.algorithm.support.BubbleSort; G`a,(<kT;  
import org.rut.util.algorithm.support.HeapSort; _kgGz@/p  
import org.rut.util.algorithm.support.ImprovedMergeSort; u]D>O$_ s  
import org.rut.util.algorithm.support.ImprovedQuickSort; GT -(r+u  
import org.rut.util.algorithm.support.InsertSort; m'L7K K-Y)  
import org.rut.util.algorithm.support.MergeSort; $r>\y (W  
import org.rut.util.algorithm.support.QuickSort; ]VYv>o`2  
import org.rut.util.algorithm.support.SelectionSort; B4/0t:^I  
import org.rut.util.algorithm.support.ShellSort; W(C\lSE0  
%Ydzzr3  
/** c h_1 -  
* @author treeroot # 1S*}Q<k  
* @since 2006-2-2 nb -Je+  
* @version 1.0 4 ^=qc99  
*/ yq?7!X  
public class SortUtil { oj8_e xx  
public final static int INSERT = 1; jK!Y-  
public final static int BUBBLE = 2; B/iRR2h  
public final static int SELECTION = 3; 7]i=eD8  
public final static int SHELL = 4; GN7\p)  
public final static int QUICK = 5; :X?bWxOJ  
public final static int IMPROVED_QUICK = 6; d )}@0Q  
public final static int MERGE = 7; &TpzJcd"  
public final static int IMPROVED_MERGE = 8; Z[(V0/[]  
public final static int HEAP = 9; ylV.ZoY6  
MzF9 &{N  
public static void sort(int[] data) { af:wg]g  
sort(data, IMPROVED_QUICK); RWN2 P6  
} #^\q Fj  
private static String[] name={ l~Em2@c  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" BUuU#e5  
}; %(EUZu2  
NXwlRMbo  
private static Sort[] impl=new Sort[]{ Bn[5M [  
new InsertSort(), Esc*+}ck  
new BubbleSort(), !PaDq+fB  
new SelectionSort(), Fu K(SP3  
new ShellSort(),  qep<7 QO  
new QuickSort(), l c<&f  
new ImprovedQuickSort(), ?z:Xdx\l  
new MergeSort(), ?pT\Ft V  
new ImprovedMergeSort(), QQd%V#M?  
new HeapSort() [vIHYp  
}; Ly0U')D:  
q{rc[ s?  
public static String toString(int algorithm){ w Wx,}=  
return name[algorithm-1]; W6Os|z9&|  
} {kLL&`ii  
F-=W7 D:[c  
public static void sort(int[] data, int algorithm) { ~}SOd<n)|  
impl[algorithm-1].sort(data); ;'\{T#5)  
} x*)@:W!  
kUl:Yj=&  
public static interface Sort { G1Qc\mp  
public void sort(int[] data); zLG5m]G4D  
} x?ajTzMv  
> 5i(U_`l  
public static void swap(int[] data, int i, int j) { 94=aVM\>>  
int temp = data; t=`bXBX1  
data = data[j]; DhQYjC[  
data[j] = temp; jLULf+ 8&  
} Ha~g8R&  
} Ax#$z  
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