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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。 @T.F/Pjhc  
插入排序: kI5LG6  
;i+(Q%LO  
package org.rut.util.algorithm.support; `Pwf?_2n-  
2)n%rvCQ  
import org.rut.util.algorithm.SortUtil; Gz8JOl  
/** LUz`P6  
* @author treeroot y^kC2DS   
* @since 2006-2-2 a{%EHL,F  
* @version 1.0 U~c9PqjZ  
*/ R iV]SgV 9  
public class InsertSort implements SortUtil.Sort{ _+}hId  
YhAO  
/* (non-Javadoc) rEU1 VvE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /jq"r-S"  
*/ irjHPuhcG  
public void sort(int[] data) { M$f_I +  
int temp; rfZg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^BI&-bR@  
} 9+5F(pd(  
} c]z^(:_>  
} Ml +f3#HP  
8 -b~p  
} =U:]x'g(  
CaoQPb*  
冒泡排序: &;Go CU Le  
S=~+e{  
package org.rut.util.algorithm.support; T).}~i;!  
{c&9}u$e  
import org.rut.util.algorithm.SortUtil; gK dNgU  
#}Ays#wA>?  
/** wc~9zh  
* @author treeroot E!I4I'  
* @since 2006-2-2 .Dr7YquW  
* @version 1.0 v yP_qG  
*/ td#m>S  
public class BubbleSort implements SortUtil.Sort{ +yHzp   
+,D82V7S  
/* (non-Javadoc) WCp[6g&%O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '64/2x  
*/ jd 8g0^  
public void sort(int[] data) { 6skd>v UU  
int temp; eMH\]A~v"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ nXxnyom,  
if(data[j] SortUtil.swap(data,j,j-1); )%!X,  
} (hv}K*c{  
} R/^;,.  
} o9v9 bL+X  
} >g[Wnzf  
ZQ[s:  
} xrJ0  
~<osL  
选择排序: %u]>K(tU  
[Kbna>`  
package org.rut.util.algorithm.support; O9p^P%U"  
G0ENk|wbbj  
import org.rut.util.algorithm.SortUtil; !A_KCM:Ym  
\nQEvcH  
/** EVbDI yFn  
* @author treeroot Uf$IH!5;Z  
* @since 2006-2-2 z_z '3d.r7  
* @version 1.0 a1weTn*  
*/ RZj06|r8  
public class SelectionSort implements SortUtil.Sort { _ `7[}M~  
Pp|pH|(n ,  
/* YeF'r.Y  
* (non-Javadoc) .+^o{b  
* <R#:K7> O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wKz*)C  
*/ 8[8U49V9(  
public void sort(int[] data) { ,z0E2  
int temp; +6Vu]96=KC  
for (int i = 0; i < data.length; i++) { 81wmKqDEs  
int lowIndex = i; eA/}$.R  
for (int j = data.length - 1; j > i; j--) { -%t8a42  
if (data[j] < data[lowIndex]) { -ktYS(8&  
lowIndex = j; B#4 J![BX  
} e}L(tXZ  
} yhyh\.  
SortUtil.swap(data,i,lowIndex); )#Y:Bj7H@2  
} uRw%`J4H  
} Fd9Z7C  
"QY~V{u5  
} jH4Wu`r;m  
9p"';*{=  
Shell排序: K%vGfQ8Er-  
UAdj [m61  
package org.rut.util.algorithm.support; lHPhZ(Z  
*P[N.5{  
import org.rut.util.algorithm.SortUtil; h^b=  
P`M1sON~  
/** Y+~>9-S  
* @author treeroot zPb "6%1B  
* @since 2006-2-2 #kQLHi3##  
* @version 1.0 c-a;nAR  
*/ %M05& <  
public class ShellSort implements SortUtil.Sort{ 0 f"M-x  
>[g'i+{  
/* (non-Javadoc) niM(0p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t]pJt  
*/ :SpPT  
public void sort(int[] data) { !myF_cv}'  
for(int i=data.length/2;i>2;i/=2){ fP1fm  
for(int j=0;j insertSort(data,j,i); mDU-;3OqF  
} qk(u5Z  
} sk`RaDq@;  
insertSort(data,0,1); -QP1Se*#  
} %] 7.E  
.](s\6'  
/** S-+^L|  
* @param data .c.#V:XZ#U  
* @param j ktKT=(F&  
* @param i Yt;.Z$i ,  
*/ GQ9g$&T  
private void insertSort(int[] data, int start, int inc) { U=bZy,FT$  
int temp; 3bPvL/\Lb  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [t`QV2um  
} I*K~GXWs#  
} !xK`:[B  
} e: :H1V  
Nm=W?i  
} nEm+cHHo?  
1 {V*(=Tp  
快速排序: xTL"%'|  
C zvi':  
package org.rut.util.algorithm.support; C,D~2G  
Z5o6RTi  
import org.rut.util.algorithm.SortUtil; #yVY! +A  
izi=`;=D^  
/** zKk2>.  
* @author treeroot g< {jgF  
* @since 2006-2-2 bXiT}5mJU  
* @version 1.0 j7 D\O  
*/ A3N<;OOk  
public class QuickSort implements SortUtil.Sort{ AHhck?M^  
9_ GR\\  
/* (non-Javadoc) cv["Ps#;`W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aNCIh@m~  
*/ Ol24A^  
public void sort(int[] data) { lH^[b[  
quickSort(data,0,data.length-1); gI^*O@Q4{b  
} `=Hh5;ep  
private void quickSort(int[] data,int i,int j){ y85/qg) H^  
int pivotIndex=(i+j)/2; #SRGVa`x  
file://swap K_B-KK(^  
SortUtil.swap(data,pivotIndex,j); y8un&LP  
x*[\$E`v  
int k=partition(data,i-1,j,data[j]); /wL}+  
SortUtil.swap(data,k,j); Y m|zM1qc  
if((k-i)>1) quickSort(data,i,k-1); >%.6n:\rG  
if((j-k)>1) quickSort(data,k+1,j); PQ|kE`'  
}ya9 +?I  
} pRj1b^F5y  
/** D[)g-_3f6<  
* @param data #^v|u3^DD  
* @param i ^60BQ{ne  
* @param j "el}@  
* @return TCFx+*fBd  
*/ 8hi|F\$_h  
private int partition(int[] data, int l, int r,int pivot) { oxb#{o9G  
do{ W9T,1h5x  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y!Q&;xO+!  
SortUtil.swap(data,l,r); cSBYC_LU  
} n8[ sl]L  
while(l SortUtil.swap(data,l,r); )sVz;rF<  
return l; 5/Q^p"  
} <ok/2v  
b$+.}&M  
} 0Q=4{*:?  
R$=UJ}>  
改进后的快速排序: w Maib3Q  
EOjo>w>  
package org.rut.util.algorithm.support; k9.2*+vvg  
|jniI(  
import org.rut.util.algorithm.SortUtil; [|\~-6"7N|  
b&Qj`j4]ZM  
/** jnX9] PkJ  
* @author treeroot )G0a72  
* @since 2006-2-2 XFPWW,  
* @version 1.0 DGTSk9iK(  
*/ Dg4 ?,{c9W  
public class ImprovedQuickSort implements SortUtil.Sort { rm NqS+t  
!h{qO&ZH=  
private static int MAX_STACK_SIZE=4096; 2`Xy}9N/Y  
private static int THRESHOLD=10; z)r)w?A  
/* (non-Javadoc) HP2]b?C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #m6 eG&a  
*/ #n 7uw  
public void sort(int[] data) { "EQ-`b=I4  
int[] stack=new int[MAX_STACK_SIZE]; BM#cosV7%h  
"8aw=3A  
int top=-1; j9sf~}D>  
int pivot; [: X  
int pivotIndex,l,r; ?C6iJnm  
ojzO?z  
stack[++top]=0; 2![.Kbqa%  
stack[++top]=data.length-1; 6yKr5tH4  
6e$(-ai  
while(top>0){ lN)U8  
int j=stack[top--]; cejSGsW6q  
int i=stack[top--]; T&I*8 R~  
!j6]k^ra  
pivotIndex=(i+j)/2; NWSBqL5v   
pivot=data[pivotIndex]; . Yg)|/  
>z1RCQWju  
SortUtil.swap(data,pivotIndex,j); RZ9vQ\X U)  
7E4=\vM  
file://partition eZ y)>.6Z  
l=i-1; T@uY6))>F  
r=j; <SUjz}_Oa:  
do{ Iw8;",e2  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tB4- of3+  
SortUtil.swap(data,l,r); Iu^# +n  
} k`6T% [D]  
while(l SortUtil.swap(data,l,r); BCk$FM@  
SortUtil.swap(data,l,j); iVzv/Lqm1  
nk]jIR y^T  
if((l-i)>THRESHOLD){ Z +@"  
stack[++top]=i; r>sk@[4h  
stack[++top]=l-1; Z}TuVE  
} ]L%qfy4  
if((j-l)>THRESHOLD){ Q2iS0#  
stack[++top]=l+1; |_8- 3  
stack[++top]=j; ,2/qQD n/  
} 6$w)"Rq  
y iE[^2Pv  
} I2(5]85&]s  
file://new InsertSort().sort(data); T+zZOI  
insertSort(data); |f&)@fUI  
} 1Dg\\aUk  
/** 6+A<_r`#Q  
* @param data ScYw3i  
*/ f@+[-yF  
private void insertSort(int[] data) { G*ZHLLO4S\  
int temp; J{Ei+@^/9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B@` 87  
} R4u=.  
} z@^[.  
} meT~b  
mdR:XuRD"t  
} |S|0'C*  
~T9%%W[  
归并排序: hV])\t=yf  
G0Smss=K  
package org.rut.util.algorithm.support; ngj=w;7~+  
I4ZL +a  
import org.rut.util.algorithm.SortUtil; N\1!)b  
n;)!N  
/** | Uf6k`  
* @author treeroot v-J*PB.0p  
* @since 2006-2-2 ;(fDR8  
* @version 1.0 Q5b?- P  
*/ i)g=Lew  
public class MergeSort implements SortUtil.Sort{ 8i=J(5=  
2ixg ix  
/* (non-Javadoc) e3UGYwQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q [Rqy !,  
*/ tbF>"?FY/  
public void sort(int[] data) { Nt9M$?\P  
int[] temp=new int[data.length]; A1zM$ wDU  
mergeSort(data,temp,0,data.length-1); :2{6Pa(eg  
} kG/:fP  
}$s#H{T!  
private void mergeSort(int[] data,int[] temp,int l,int r){ \dTX%<5D  
int mid=(l+r)/2; \R yOexNZ  
if(l==r) return ; FA<|V!a  
mergeSort(data,temp,l,mid); R<@s]xX_  
mergeSort(data,temp,mid+1,r); N|Xx#/  
for(int i=l;i<=r;i++){ k{(R.gLZG  
temp=data; os|8/[gT  
} "qjkw f)\  
int i1=l; at]=SA  
int i2=mid+1; >{p&_u.r-  
for(int cur=l;cur<=r;cur++){ mk8xNpk B  
if(i1==mid+1) I?LJXo\O  
data[cur]=temp[i2++]; sxIvL7jl  
else if(i2>r) P?  VGY  
data[cur]=temp[i1++]; B *p`e1  
else if(temp[i1] data[cur]=temp[i1++]; aa2&yc29hp  
else W\:!v%C  
data[cur]=temp[i2++]; @&t ';"AE  
} hJ\IE?+  
} ]/hF!eO  
VliX'.-  
} Gf( hN|X.  
Q;W[$yvW  
改进后的归并排序: O|=5+X  
oa$-o/DhB  
package org.rut.util.algorithm.support; {m~.'DU  
|1wfLJ4--l  
import org.rut.util.algorithm.SortUtil; (+ q#kKR  
B:#5U85m  
/** 2K4Jkyi  
* @author treeroot 7Vd"k;:X  
* @since 2006-2-2 Rd@34"O  
* @version 1.0 V TQ V]>|  
*/ UjxEbk5>^  
public class ImprovedMergeSort implements SortUtil.Sort { . >[d:0  
cih@: =Qy  
private static final int THRESHOLD = 10; v7&oHOk!  
["Mq  
/* xDU>y  
* (non-Javadoc) lx$]f)%~  
* 'QW/TJ=7r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6x|"1 G{  
*/ '8\7(0$c  
public void sort(int[] data) { V/5.37FSb  
int[] temp=new int[data.length]; 6t/nM  
mergeSort(data,temp,0,data.length-1); P1KXvc}JGe  
} m}&cXY  
vaN}M)W/  
private void mergeSort(int[] data, int[] temp, int l, int r) { cO/%;HEV  
int i, j, k; e^2e[rp0  
int mid = (l + r) / 2; ya7PF~:E-  
if (l == r) =<Q_&_.60  
return; 7Mq4$|qhD  
if ((mid - l) >= THRESHOLD) q)vdDdRe_  
mergeSort(data, temp, l, mid); zmd,uhNc:  
else 4.il4Qqy}i  
insertSort(data, l, mid - l + 1); X^;[X~g  
if ((r - mid) > THRESHOLD) %;ZWYj`]n  
mergeSort(data, temp, mid + 1, r); w/_n$hX  
else VQ wr8jXye  
insertSort(data, mid + 1, r - mid); " !43,!<  
\ldjWc<S  
for (i = l; i <= mid; i++) { nF$n[:  
temp = data; z{XN1'/V  
} &c!d}pU}  
for (j = 1; j <= r - mid; j++) { 8axz`2`  
temp[r - j + 1] = data[j + mid]; !-%fCg(B  
} I3sH8/*  
int a = temp[l]; gwVfiXR4  
int b = temp[r]; Tk~RT<\Ab+  
for (i = l, j = r, k = l; k <= r; k++) { Tj5G /H>   
if (a < b) { JHQc)@E}  
data[k] = temp[i++]; =P'33) \ )  
a = temp; Sc!]M 5  
} else { ]gHxvT\E  
data[k] = temp[j--]; W=b<"z]RE  
b = temp[j]; \i1>/`F  
} lS1-e0,h1  
} $7M/rF;N5X  
} ~DY5`jV  
d'j8P  
/** ,K4*0!TXP  
* @param data %f??O|O3  
* @param l h M{&if  
* @param i 9 {&APxm  
*/ ttQX3rmF01  
private void insertSort(int[] data, int start, int len) { vn oI.;H,  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); dLA'cQId  
} Qa*?iD  
} [f`^+,U  
} @ qFE6!  
} 'zYKG5A  
Ve/"9 ?Y_  
堆排序: w\(LG_n|  
V[E7 mhqy  
package org.rut.util.algorithm.support; C\.mv|aW~  
n =SY66  
import org.rut.util.algorithm.SortUtil; -^A=U7  
_`RzPIS^  
/** Xxl>,QUA  
* @author treeroot )HZUCi/F]  
* @since 2006-2-2 \=n0@1Q=>  
* @version 1.0 /JP]5M)   
*/ f1eY2UtWQ  
public class HeapSort implements SortUtil.Sort{ W40GW  
{8L)Fw  
/* (non-Javadoc) 31BN ?q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y# <38+Gd  
*/ $#Mew:J  
public void sort(int[] data) { "v.]s;g  
MaxHeap h=new MaxHeap(); P<+y%g(({  
h.init(data); m3|KIUP  
for(int i=0;i h.remove(); %y@iA91K  
System.arraycopy(h.queue,1,data,0,data.length); @\~qXz{6J  
} 44s K2  
6 yIl)5/=  
private static class MaxHeap{ [,GXA)j  
p)  x.Y  
void init(int[] data){ b0\'JZ  
this.queue=new int[data.length+1]; sy^k:y?  
for(int i=0;i queue[++size]=data; &p?Oo^  
fixUp(size); iU)-YFO  
} D+ki2UVt&  
}  84PD`A  
bYzBe\^3q3  
private int size=0; c[=%v]j:u  
WA);Z=  
private int[] queue; hl4@Y#n  
OL+!,Y  
public int get() { Sr7+DCr  
return queue[1]; !*46@sb:  
} DNgQ.lV  
wp/u*g  
public void remove() { 9JF*xXd>Q  
SortUtil.swap(queue,1,size--); id^U%4J  
fixDown(1); 2>{_O?UN  
} \L#BAB6z  
file://fixdown Q@3.0Hf|{  
private void fixDown(int k) { wu*WA;FnA  
int j; Kuh! b`9  
while ((j = k << 1) <= size) { V/j]UK0$  
if (j < size %26amp;%26amp; queue[j] j++; a S- rng  
if (queue[k]>queue[j]) file://不用交换 dEXHd@"H  
break; Pn{yk`6E  
SortUtil.swap(queue,j,k); T;-Zl[H  
k = j; "Y&+J@]  
} vP G!S{4  
} b0a'Y"oef4  
private void fixUp(int k) { -t9oL3J  
while (k > 1) { '-jKv=D+  
int j = k >> 1; %iPu51+=  
if (queue[j]>queue[k]) B3I\=  
break; 0F'75  
SortUtil.swap(queue,j,k); CK e  
k = j; {GF>HHQb  
} ^qpa[6D6x  
} mB(*)PwZ  
0XlX7Sk+  
} i '!M<>7  
Ow\9vf6H  
} >l$vu-k)~4  
%EPqJ(T  
SortUtil: R|Ft@]  
=#XsY,r  
package org.rut.util.algorithm; A!v-[AI[  
Q, E!Ew3  
import org.rut.util.algorithm.support.BubbleSort; {nQ}t }B  
import org.rut.util.algorithm.support.HeapSort; 1A23G$D  
import org.rut.util.algorithm.support.ImprovedMergeSort; KmV>tn BQ  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^_<>o[qE  
import org.rut.util.algorithm.support.InsertSort; IidZ -Il  
import org.rut.util.algorithm.support.MergeSort; u)P$xkf  
import org.rut.util.algorithm.support.QuickSort; 3&*0n^g  
import org.rut.util.algorithm.support.SelectionSort; rL URP2~  
import org.rut.util.algorithm.support.ShellSort; ^F*)Jq  
S&-sl   
/** sF;1)7]Pq  
* @author treeroot .Jdw:  
* @since 2006-2-2 ?Di, '  
* @version 1.0 ^a`zvrE v  
*/ xsRMF&8L  
public class SortUtil { /3%]Ggwe  
public final static int INSERT = 1; i:#R U^R  
public final static int BUBBLE = 2; ilK8V4k<T)  
public final static int SELECTION = 3; :Puv8[1i  
public final static int SHELL = 4; "sFdrXJ  
public final static int QUICK = 5; Fc}wu W  
public final static int IMPROVED_QUICK = 6; 2W pe( \(  
public final static int MERGE = 7; 9\)NFZ3Mz  
public final static int IMPROVED_MERGE = 8; 8O{]ML  
public final static int HEAP = 9; Kw'Dzz%kN  
"!)8bTW  
public static void sort(int[] data) { +2oZB]GPL  
sort(data, IMPROVED_QUICK); \Y9=d E}  
} HkvCQH  
private static String[] name={ c7\bA7.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^OG^% x"  
}; @n(=#Q3  
>1ZMQgCG  
private static Sort[] impl=new Sort[]{ cXJgdBwo  
new InsertSort(), _0F6mg n  
new BubbleSort(), u\qyh9s  
new SelectionSort(), BHj]w*Ov  
new ShellSort(), F__>`Do l  
new QuickSort(), mS~3QV  
new ImprovedQuickSort(), `M>{43dj  
new MergeSort(), H@IX$+;z  
new ImprovedMergeSort(), n2#uH  
new HeapSort() ~73"AWlp  
}; #`"'  
*ep!gT*4  
public static String toString(int algorithm){ 4BEVG&Ks  
return name[algorithm-1]; >K\ 79<x|  
} cD s#5,  
KvilGh10  
public static void sort(int[] data, int algorithm) { 8gC(N3/E"  
impl[algorithm-1].sort(data); MPzqw)_-v  
} ZuS+p0H"  
2L<TqC{,-  
public static interface Sort { ]VJcV.7`  
public void sort(int[] data); P >N\q  
} ;JL@V}L,  
aDZLabRu  
public static void swap(int[] data, int i, int j) { A#1y>k  
int temp = data; iI&SI#; _  
data = data[j]; =As'vt 0  
data[j] = temp; 5!nZvv  
} @oRYQ|.R  
} ,A6*EJ\w   
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