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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。 paK2 xX8E  
插入排序: 'NmRR]Q9  
JI}'dU>*U:  
package org.rut.util.algorithm.support; }j%5t ~Qa  
j_AACq {.  
import org.rut.util.algorithm.SortUtil; }OUtsh]y  
/** 29Ki uP  
* @author treeroot oxs#866x  
* @since 2006-2-2 siI;"?  
* @version 1.0 A&VG~r$  
*/ *pq\MiD/  
public class InsertSort implements SortUtil.Sort{ xp t:BBo  
>A= f 1DF  
/* (non-Javadoc) X8|,   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zfU{Kd  
*/ ;TYBx24vD'  
public void sort(int[] data) { l **X^+=$  
int temp; se)TzI^]b@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _/|\aqF.  
} w<#!h6Y=  
} ^!d3=}:0  
} kmW4:EA%  
)GpK@R]{  
} eFgA 8kY)  
jp,4h4C^)  
冒泡排序: wMn i  
OXA7w.^  
package org.rut.util.algorithm.support; (=0.inZ  
h{Y",7] !  
import org.rut.util.algorithm.SortUtil; # d  
2G7Wi!J  
/** aN?zmkPpov  
* @author treeroot ll^#JpT[S  
* @since 2006-2-2 dd;~K&_Q/i  
* @version 1.0 1zv'.uu.,  
*/ 4RO}<$Nx}  
public class BubbleSort implements SortUtil.Sort{ W\3X=@|u)  
**%37  
/* (non-Javadoc) jA1 +x:Wq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3fj4%P"  
*/ {) XTk &"  
public void sort(int[] data) { K?;DMUSY\  
int temp; C dn J&N{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0mE 0 j  
if(data[j] SortUtil.swap(data,j,j-1); [0!(xp^  
} 3og.y+.=U.  
} D*jM1w_`  
} 04ui`-c(  
} ( .:e,l{U%  
e'~3oqSvR  
} N~Jda o  
ytImB`'\  
选择排序: 4hB]vY\T  
oH@78D0A  
package org.rut.util.algorithm.support; IGl9 g_18  
w )f#V s  
import org.rut.util.algorithm.SortUtil; x2xRBkRg=  
5pX6t  
/** ,tFg4k[  
* @author treeroot ("KF'fp&M2  
* @since 2006-2-2 1 MFbQs^  
* @version 1.0 [Xkx_B  
*/ 81F9uM0  
public class SelectionSort implements SortUtil.Sort { Yy8g(bU  
$xsd~L &  
/* 97Vtn4N3  
* (non-Javadoc) c<~H(k'+c  
* U{mYTN*:j$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }MySaL>  
*/ W?& %x(6M  
public void sort(int[] data) { g)-te+?6  
int temp; 7V>M]  
for (int i = 0; i < data.length; i++) { [),ige  
int lowIndex = i; h[ ZN+M  
for (int j = data.length - 1; j > i; j--) { Py< }S-:  
if (data[j] < data[lowIndex]) { PT ~D",k  
lowIndex = j; kZ~~/?B  
} 7zMr:JmV  
} y =@N|f!  
SortUtil.swap(data,i,lowIndex); l (o~-i\M  
} Om&Dw |xG8  
} YSMAd-Ef-  
+ZYn? #IQ  
} )oZ dj`  
NK+o1   
Shell排序: 6!o1XQr=Z  
xw%0>K[  
package org.rut.util.algorithm.support; <@}9Bid!o  
:UdF  
import org.rut.util.algorithm.SortUtil; ,4 rPg]r@  
2%1hdA<  
/** *hrd5na  
* @author treeroot u2I Cl  
* @since 2006-2-2 Ac6=(B  
* @version 1.0 & kIFcd@  
*/ y(Td/rY.  
public class ShellSort implements SortUtil.Sort{ 6*?F@D2&  
0(I j%Wi,  
/* (non-Javadoc) i4Jc.8^9$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )0MB9RMk1  
*/ B!yr!DWv  
public void sort(int[] data) { X]=t>   
for(int i=data.length/2;i>2;i/=2){ <i[HbgUlO.  
for(int j=0;j insertSort(data,j,i); d-m7 }2c  
} K,]=6 Rj  
} fM}#ON>Z  
insertSort(data,0,1); g0 [w-?f  
} "b[5]Y{ U  
mmsPLv6  
/** 5xde;  
* @param data fVwU e _Y  
* @param j DlT{`  
* @param i ?upM>69{  
*/ kT?J5u _o  
private void insertSort(int[] data, int start, int inc) { Al'3?  
int temp; 'S~5"6r  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O f#:  
} Qd6FH2Pl  
} %SI'BJ  
} E9}C  #  
DJir{ \F  
} ;=@0'xPEa-  
mq[ug>  
快速排序: vy/-wP|1  
F/Pep?'  
package org.rut.util.algorithm.support; :EH=_"  
>+waX "e  
import org.rut.util.algorithm.SortUtil; r/sNrB1U"y  
9kojLqCT  
/** nm+s{  
* @author treeroot V1?]|HTQcT  
* @since 2006-2-2 Ah<+y\C  
* @version 1.0 -+5>|N#  
*/ 6#yUc_5 \  
public class QuickSort implements SortUtil.Sort{ m68*y;#  
nie%eC&U  
/* (non-Javadoc) K>9 ()XT)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^GX)Z~  
*/ 9Ee'Cm  
public void sort(int[] data) { w:l"\Tm  
quickSort(data,0,data.length-1); 6Iw\c  
} 6,uX,X5  
private void quickSort(int[] data,int i,int j){ |M_UQQAB|  
int pivotIndex=(i+j)/2; 4sM.C9W  
file://swap iOdpM{~*  
SortUtil.swap(data,pivotIndex,j); ]HdCt3X  
V+~Nalm O  
int k=partition(data,i-1,j,data[j]); lLD12d  
SortUtil.swap(data,k,j); *qMY22X  
if((k-i)>1) quickSort(data,i,k-1); X(C$@N  
if((j-k)>1) quickSort(data,k+1,j); y?0nI<}}HK  
%UM *79  
} tjnIN?YT  
/** >j`qh:^  
* @param data X?$_Sd"G+5  
* @param i `W-Fssu  
* @param j MfQ!6zE  
* @return >3_Gw4S*H  
*/ fzA9'i`  
private int partition(int[] data, int l, int r,int pivot) { "\=U)CJ  
do{ =2 kG%9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); JLi|Td "1%  
SortUtil.swap(data,l,r); 9/7u*>:  
} @I*{f  
while(l SortUtil.swap(data,l,r); ?s _5&j7  
return l; '\GbmD^F  
} HmwT~  
LDD|(KLR*.  
} R$Q.sE  
-(#iIgmP  
改进后的快速排序: T#)P`q  
9C \Fq-  
package org.rut.util.algorithm.support; f {"?%Ku#  
Lk$B{2^n  
import org.rut.util.algorithm.SortUtil; aA TA9V  
e$pV%5=  
/** hL5|69E  
* @author treeroot HdG2X  
* @since 2006-2-2 )Z VD+X  
* @version 1.0 ^VACf|0  
*/ ""D 4s  
public class ImprovedQuickSort implements SortUtil.Sort { g4@ lM"|S  
9E6R0D}  
private static int MAX_STACK_SIZE=4096; ; Hd7*`$  
private static int THRESHOLD=10; f`/x"@~H5  
/* (non-Javadoc) M xG W(p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p^u:&Quac  
*/ @<Yy{ ~L|  
public void sort(int[] data) { l$'wDhN*  
int[] stack=new int[MAX_STACK_SIZE]; +KEWP\r  
.% OR3"9@  
int top=-1; o+9j?|M  
int pivot; w'3iY,_ufC  
int pivotIndex,l,r; FkRo _?  
M:6"H%h,W  
stack[++top]=0; G/mXq-  
stack[++top]=data.length-1; \B 7tX  
i2^>vYCsl  
while(top>0){ [66! bM&  
int j=stack[top--]; 0<B$#8  
int i=stack[top--]; C{b gkzr  
F*K_+ ?m  
pivotIndex=(i+j)/2; 8'r[te4,  
pivot=data[pivotIndex]; 3<zp  
qcGK2Qx  
SortUtil.swap(data,pivotIndex,j); d5z`BH.  
;xs"j-r/  
file://partition UEVG0qF  
l=i-1; |id <=Xf  
r=j; <V6VMYXY4  
do{ bNoW?8bZ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :$9tF >  
SortUtil.swap(data,l,r); E`k@{*Hn&  
} PIpi1v*qz  
while(l SortUtil.swap(data,l,r); $"&{aa  
SortUtil.swap(data,l,j); b,%C{mC  
ohGfp9H  
if((l-i)>THRESHOLD){ ~<OSYb  
stack[++top]=i; aCLqk'  
stack[++top]=l-1; :Qf '2.h)  
} fe#\TNeQJ[  
if((j-l)>THRESHOLD){ V}NbuvDB@  
stack[++top]=l+1; Mzw X>3x  
stack[++top]=j; J{&H+rd  
} Q({ r@*g  
g^ i&gNDx  
} ,$+V  
file://new InsertSort().sort(data); t\j*}# S  
insertSort(data); ^4Ah_ U  
} a,#j =  
/** L4|`;WP  
* @param data c#tjp(-  
*/ Eue~Y+K*b  
private void insertSort(int[] data) { SrK<fAkx  
int temp; FzXJ]H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~B(4qK1G  
} 8d-t|HkN  
} M b1s F  
} cX OK)g#  
WYYa /,{9.  
} Y6L ~K?  
kO*$"w#X[p  
归并排序: I[##2  
M8b;d}XL  
package org.rut.util.algorithm.support; FA3~|Zg  
N;j)k;  
import org.rut.util.algorithm.SortUtil; \3aoM{ztD  
]Y8<`;8/  
/** 8j\cL'  
* @author treeroot V2|aN<Sx<  
* @since 2006-2-2 f|lU6EkU  
* @version 1.0 X;c'[q  
*/ =k0_eX0  
public class MergeSort implements SortUtil.Sort{ 5m(^W[u `  
sAD}#Zw$  
/* (non-Javadoc) I4q9|'-yx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) in-HUG  
*/ Fv<F}h?6  
public void sort(int[] data) { YCM]VDx4u1  
int[] temp=new int[data.length]; }YNR"X9*)/  
mergeSort(data,temp,0,data.length-1); #"\gLr_:m  
} 364`IC( a  
doy`C)xI  
private void mergeSort(int[] data,int[] temp,int l,int r){ wN-d'-z/rd  
int mid=(l+r)/2; <drODjB  
if(l==r) return ; ;^%4Q"  
mergeSort(data,temp,l,mid); MgrLSKLT  
mergeSort(data,temp,mid+1,r); #(JNn'fzq  
for(int i=l;i<=r;i++){ <\ :Yk  
temp=data; YLv'43PL  
} (HE9V]  
int i1=l; }h!f eP  
int i2=mid+1; v,{yU\)  
for(int cur=l;cur<=r;cur++){ EYEnN  
if(i1==mid+1) r^paD2&}  
data[cur]=temp[i2++]; DLMM/WJg@  
else if(i2>r) 8UyMVY  
data[cur]=temp[i1++]; Y M\ K%rk  
else if(temp[i1] data[cur]=temp[i1++]; ;n=.>s*XL'  
else ( _)jkI \  
data[cur]=temp[i2++]; t@N=kV  
} a$"Hvrj  
} *b/` Ya4  
oxkoA  
} ~r`9+b[9{  
W!&'pg  
改进后的归并排序: <_tT<5'[$u  
`A^"% @j  
package org.rut.util.algorithm.support; (Dl$kGn  
orfO^;qTY  
import org.rut.util.algorithm.SortUtil; Hx*;jpy(2  
ZUR6n>r  
/** S.m{eur!,E  
* @author treeroot ps%q9}J  
* @since 2006-2-2 .my0|4CQ#@  
* @version 1.0 @&:ar  
*/ v` 7RCg`  
public class ImprovedMergeSort implements SortUtil.Sort { - 'W++tH=  
RyK\uv  
private static final int THRESHOLD = 10; PuT@}tw  
ws|;  `  
/* & <J[Q%2  
* (non-Javadoc) S=nzw-(I  
* 5>j)kx=J9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Es"LP]  
*/ h`k"A7M  
public void sort(int[] data) { 7 :3$Ey  
int[] temp=new int[data.length]; H_ox_ u}  
mergeSort(data,temp,0,data.length-1); "zRoU$X  
} ez^@NK  
M9@ri^x  
private void mergeSort(int[] data, int[] temp, int l, int r) { oMTf"0EIW  
int i, j, k; MP 2~;T}~  
int mid = (l + r) / 2; [E JQ>?D  
if (l == r) ,JN8f]a^"g  
return; c8>hc V  
if ((mid - l) >= THRESHOLD) uYil ?H{kH  
mergeSort(data, temp, l, mid); mB9r3[  
else GBFtr   
insertSort(data, l, mid - l + 1); x{c/$+Z[  
if ((r - mid) > THRESHOLD) glXZZ=j  
mergeSort(data, temp, mid + 1, r); `Ru3L#@  
else '-b*EZU8t  
insertSort(data, mid + 1, r - mid); 5~WGZc  
!0C^TCuG  
for (i = l; i <= mid; i++) { D{4YxR PX  
temp = data; x,S P'fcP  
} GJp85B!PlO  
for (j = 1; j <= r - mid; j++) { Za8#$`zq  
temp[r - j + 1] = data[j + mid]; mAW, ?h  
} ?Ovqp-sw  
int a = temp[l]; hk;7:G  
int b = temp[r]; eT8}  
for (i = l, j = r, k = l; k <= r; k++) { ?6jkI2w  
if (a < b) { _}VloiY  
data[k] = temp[i++]; ZRVT2VfN  
a = temp; /'DsB%7g  
} else { z,bQQ;z9  
data[k] = temp[j--]; X'% ;B  
b = temp[j]; nn9wdt@.]  
} S (N\cw$  
} FEW_bP/4  
} 1`9xIm*9w  
@b~fIW_3>  
/** }~h(w^t  
* @param data _#}n~}d  
* @param l Kmv+1T0,  
* @param i u% n*gcY  
*/ VA%Un,5h  
private void insertSort(int[] data, int start, int len) { lmSo8/%T  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); N**g]T 0`  
} ~~,rp) )  
} /q$,'^.A  
} #I3$3^0i#  
} ?EK?b s  
P7f,OY<@%o  
堆排序: gxMfu?zk"  
=.`qixN  
package org.rut.util.algorithm.support; hyT1xa  
|xvy')(b  
import org.rut.util.algorithm.SortUtil; b (I2m  
tpTAeQ*:d  
/** iTg;7~1pY  
* @author treeroot U"4?9. k  
* @since 2006-2-2 NAzX". g  
* @version 1.0 4~OQhiJ   
*/ \S)2  
public class HeapSort implements SortUtil.Sort{ N9<Ujom  
n7YEG-J  
/* (non-Javadoc) 3o|I[!2.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R1W}dRE}  
*/ Iu35#j  
public void sort(int[] data) { ZB[Qs   
MaxHeap h=new MaxHeap(); `K >?ju"  
h.init(data); %D`,k*X  
for(int i=0;i h.remove(); 02k4 N%  
System.arraycopy(h.queue,1,data,0,data.length); 5I@w~z  
} CCGV~e+  
?<yM7O,4  
private static class MaxHeap{ @v*/R%rv t  
rBN)a"  
void init(int[] data){ N=)z  
this.queue=new int[data.length+1]; TV}}dw  
for(int i=0;i queue[++size]=data; .\qj;20W  
fixUp(size); ;!T{%-tP  
} V8~jf-\$b  
} nB ".'=  
='E$-_  
private int size=0; CC3v%^81l^  
47T}0q,  
private int[] queue; zK+52jhi  
NS,5/t  
public int get() { 6dEyv99  
return queue[1]; OlQ,Ce  
} =N|kn<h4  
Ab1/.~^  
public void remove() { S2VVv$r_6  
SortUtil.swap(queue,1,size--); B )JM%r  
fixDown(1); jRpdft  
} vG2b:[W  
file://fixdown ^aRgMuU  
private void fixDown(int k) { efuK  
int j; ,`8Y8  
while ((j = k << 1) <= size) { 2PSTGG8JV  
if (j < size %26amp;%26amp; queue[j] j++; n!He&  
if (queue[k]>queue[j]) file://不用交换 )DUL)S  
break; mi2o1"Jd$`  
SortUtil.swap(queue,j,k); (a6?s{(  
k = j; ~tGCLf]c\  
} 4rU! 4l  
} 4o9$bv  
private void fixUp(int k) { DjW$?>  
while (k > 1) { r FL$QC2  
int j = k >> 1; P l{QOR  
if (queue[j]>queue[k])  9|S`ub'  
break; RwTzz] M  
SortUtil.swap(queue,j,k); 1;W=!Fx  
k = j; e"+dTq8W  
} s([Wn)I  
} ZcryAm:I  
f3 ]  
} oVB"f  
I/UQ'xx  
} 8 HoP( +?  
5su.+4z\  
SortUtil: \-. Tg!Q6  
LBX%HGH  
package org.rut.util.algorithm; |tG+iF@4  
_qTpy)+  
import org.rut.util.algorithm.support.BubbleSort; (buw^ ,NwZ  
import org.rut.util.algorithm.support.HeapSort; X_70]^XL  
import org.rut.util.algorithm.support.ImprovedMergeSort; IF?xnu  
import org.rut.util.algorithm.support.ImprovedQuickSort;  ?B4#f!X  
import org.rut.util.algorithm.support.InsertSort; C;sgK  
import org.rut.util.algorithm.support.MergeSort; D&[Z;,CHMA  
import org.rut.util.algorithm.support.QuickSort; #Mi|IwL  
import org.rut.util.algorithm.support.SelectionSort; Dc FCKji  
import org.rut.util.algorithm.support.ShellSort; c)1=U_61  
.u< U:*  
/** U4wpjHg  
* @author treeroot 9!t4>  
* @since 2006-2-2 cztS]dcf>~  
* @version 1.0 s[-]cHQ  
*/ <7g Ml  
public class SortUtil { Uh+jt,RB`  
public final static int INSERT = 1; d1NE%hg3  
public final static int BUBBLE = 2; YMAQ+A!  
public final static int SELECTION = 3; 8t9aHla  
public final static int SHELL = 4; O: u%7V/  
public final static int QUICK = 5; >RR<eYu7m  
public final static int IMPROVED_QUICK = 6; 4Vx+[8W  
public final static int MERGE = 7; "3t\em!  
public final static int IMPROVED_MERGE = 8; >0T3'/k<H  
public final static int HEAP = 9; ~N[|bPRmhE  
!3KPwI,  
public static void sort(int[] data) { <R~KM=rL  
sort(data, IMPROVED_QUICK); 3LrsWAz'  
} tQ0=p| T]  
private static String[] name={ R`C.ha  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )[DpK=[N^p  
}; >q&L/N5  
/'Bdq?!B&  
private static Sort[] impl=new Sort[]{ ;qT5faKB3J  
new InsertSort(), 3*\8p6G  
new BubbleSort(), kh&_#,  
new SelectionSort(), kGj]i@(PA4  
new ShellSort(), td/5Bmj  
new QuickSort(), STp!8mL  
new ImprovedQuickSort(), !pS~'E&q  
new MergeSort(), U$EM.ot  
new ImprovedMergeSort(), `]LODgk~  
new HeapSort() z9fNk%  
}; `7>K1slQ}S  
s'AQUUrb <  
public static String toString(int algorithm){ \#_@qHAG  
return name[algorithm-1]; Znq(R8BMW  
} Q^q=!/qQ  
I tgH>L'  
public static void sort(int[] data, int algorithm) { \y,; Cfl<  
impl[algorithm-1].sort(data); ,{TQ ~LP  
} I`#EhH  
%g5jY%dg.r  
public static interface Sort { :X|AW?*  
public void sort(int[] data); ?P YNE  
} TwwIt5_fN  
;HT0w_,  
public static void swap(int[] data, int i, int j) { hF9B?@n?B  
int temp = data; Cea"qNq=k  
data = data[j]; {z-NlH  
data[j] = temp; }RH lYN  
} f!^)!~  
} *+&z|Pwv[^  
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