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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。 4&W?: =H2  
插入排序: "{~5QO   
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package org.rut.util.algorithm.support; T-N>w;P  
JP8}+  
import org.rut.util.algorithm.SortUtil; Et3I(X3  
/** 2.3_FXSt  
* @author treeroot `XxnQng  
* @since 2006-2-2 l!*_[r   
* @version 1.0 +gd5&  
*/ t"$~o:U&)  
public class InsertSort implements SortUtil.Sort{ b`X''6  
m(8Tup|  
/* (non-Javadoc) <>6j>w_|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u1/ >)_U  
*/ b,Wm]N  
public void sort(int[] data) { =zFROB\  
int temp; AJ7w_'u=@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oz&`3`  
} 6:5K?Yo  
} )R7Sh51P  
} zamMlmls^  
h'"m,(a   
} -'Z Gc8)  
.I:rb~ &  
冒泡排序: >[ B.y  
s#Dj>Fej  
package org.rut.util.algorithm.support; {<yapBMw  
ZR!8hw8  
import org.rut.util.algorithm.SortUtil; `=Ip>7T&  
)'kpO>_G  
/** _V$'nz#>e  
* @author treeroot 4<Vi`X7[F  
* @since 2006-2-2 M FIb-*wT  
* @version 1.0 cK'g2S  
*/ !Ubm 586!  
public class BubbleSort implements SortUtil.Sort{ g,d_  
kG D_w  
/* (non-Javadoc) W{;Qi&^ca  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (p2`ofj  
*/ :u4|6?  
public void sort(int[] data) { AA5G` LiT  
int temp; Um+_ S@h  
for(int i=0;i for(int j=data.length-1;j>i;j--){ DZ|*hQU>K  
if(data[j] SortUtil.swap(data,j,j-1); _r-LX"  
}  w*`:v$  
} :9QU\{2  
} g`pq*D  
} mn@1&#c4y  
Ze V@ X  
} S"!6]!~^  
ZN8j})lE  
选择排序: YNBM\Q  
=2&\<Q_Fi  
package org.rut.util.algorithm.support; b~zSsws.  
'OnfU{Ai  
import org.rut.util.algorithm.SortUtil; S# ]] h/  
Xz4q^XJ  
/** 8Qg{@#Wr  
* @author treeroot 4|PWR_x  
* @since 2006-2-2 SXw r$)4_  
* @version 1.0 :$D*ab^^P  
*/ SrKitSG  
public class SelectionSort implements SortUtil.Sort { qcs) p  
_UVpQ5pN  
/* 8C{&i5kj\E  
* (non-Javadoc) UPH#~D!  
* ins(RWO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _%Z.Re  
*/ \=0;EI-j  
public void sort(int[] data) { ]1++$Ej  
int temp; )|*Qs${tF  
for (int i = 0; i < data.length; i++) { o^epXIrIPi  
int lowIndex = i; Nk9=A4=|  
for (int j = data.length - 1; j > i; j--) { OG}890$n  
if (data[j] < data[lowIndex]) { x;[ .ZzQ  
lowIndex = j; (m3hD)!+y  
} ]+:yfDtZd  
} ^/#+0/Bn  
SortUtil.swap(data,i,lowIndex); G`l\R:Q  
} Lip#uuuXXN  
} Ii+3yE@c  
$U[d#:]  
} "5N4 of 8  
y11^q*}  
Shell排序: I<2`wL=  
?J2{6,}O*.  
package org.rut.util.algorithm.support; Xy(QK2|  
O::FB.k  
import org.rut.util.algorithm.SortUtil; !l*A3qA  
,g?ny<#o  
/** M@TG7M7Os  
* @author treeroot d~8U1}dP  
* @since 2006-2-2 =>'8<"M5z  
* @version 1.0 `sm Cfh}j6  
*/ ]\yB,  
public class ShellSort implements SortUtil.Sort{ THwM',6  
CzV;{[?~;  
/* (non-Javadoc) cx:_5GF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [h-6;.e  
*/ XKGiw 2 C  
public void sort(int[] data) { {v*4mT  
for(int i=data.length/2;i>2;i/=2){ [<=RsD_q~  
for(int j=0;j insertSort(data,j,i); :=Zd)i)3  
} . Z&5TK4I  
} o'lG9ePM|  
insertSort(data,0,1); 2xN7lfu1RB  
} uL)MbM]  
3}}/,pGSc  
/** ^X&`YXjuN  
* @param data IX+Jf? &^  
* @param j )#AYb   
* @param i jN+`V)p  
*/ OD'~t,St  
private void insertSort(int[] data, int start, int inc) { {APfSD_4  
int temp; O ?T~>|  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Gxd/t#;  
} /6rjGc  
} XI`_PQco  
} a >fA-@  
.45wwouZkc  
} 9,fV  
Mzg'$]N  
快速排序: S+06pj4Ie  
|6d:k~p  
package org.rut.util.algorithm.support; HJr/N)d  
lSR\wz*Fk  
import org.rut.util.algorithm.SortUtil; L~ax`i1:"  
P{dR pH|  
/** &3/`cl[+  
* @author treeroot =-!jm? st*  
* @since 2006-2-2 q5g_5^csM{  
* @version 1.0 Mzg3i*  
*/ NATi)A"TZ  
public class QuickSort implements SortUtil.Sort{ :(enaHn#~  
q2 7Ac; y  
/* (non-Javadoc) W4 q9pHQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _,^f,WO~  
*/ F-@y H  
public void sort(int[] data) { GYw/KT~$  
quickSort(data,0,data.length-1); u|23M,  
} 8!v|`Ky  
private void quickSort(int[] data,int i,int j){ 6No.2Oo  
int pivotIndex=(i+j)/2; tgBA(2/Co  
file://swap n^QDMyC;I  
SortUtil.swap(data,pivotIndex,j); ;s3@(OnjZ  
Rb<| <D+  
int k=partition(data,i-1,j,data[j]); d '2JMdbc  
SortUtil.swap(data,k,j); > X  AB#  
if((k-i)>1) quickSort(data,i,k-1); (NUXK  
if((j-k)>1) quickSort(data,k+1,j); f]1 $`  
>kAJS??  
} 1%M^MT%&  
/** #~j$J  
* @param data QqL?? p-S>  
* @param i ,dba:D= l  
* @param j `*CoVx~fk  
* @return /,7#%D  
*/ *Iw19o-I  
private int partition(int[] data, int l, int r,int pivot) { Q \X_JZ  
do{ ])pX)(a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R&s/s`pLW  
SortUtil.swap(data,l,r); lU|ltnU  
} 6Hc25NuQZ  
while(l SortUtil.swap(data,l,r); 7# 'j>]  
return l; Uj 3{c  
} F4(;O7j9  
&[\zs&[@y  
} R(Vd[EGY  
_6FDuCVD-  
改进后的快速排序: yq3"VFh3d  
?_pd#W=!  
package org.rut.util.algorithm.support; W(ZEqH2  
jM*wm~4>@  
import org.rut.util.algorithm.SortUtil; #O^zA`D   
.f!'> _  
/** MS SHMR  
* @author treeroot ^?%ThPo_  
* @since 2006-2-2 <\:*cET3  
* @version 1.0 fR.raI4et  
*/ nb5%a   
public class ImprovedQuickSort implements SortUtil.Sort { a[^dK-  
F`Vp   
private static int MAX_STACK_SIZE=4096; Zo-Au  
private static int THRESHOLD=10; zh !/24p9  
/* (non-Javadoc) JmF`5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K~L"A]+  
*/ @TKQ_7BcB  
public void sort(int[] data) { -NG9?sI\U  
int[] stack=new int[MAX_STACK_SIZE]; =L$RY2S"  
"z.!h(Eq  
int top=-1; 7.5\LTM>9e  
int pivot; xT9+l1_  
int pivotIndex,l,r; [t^%d9@t  
n=fR%<v  
stack[++top]=0; }xrrHp  
stack[++top]=data.length-1; k!@/|]3z  
g2 V $  
while(top>0){ :Z ]E:f0P  
int j=stack[top--]; 7Ph+Vs+h  
int i=stack[top--]; zJ0'KHF}o  
"2"*3R<Y  
pivotIndex=(i+j)/2; )fZ5.W8UE]  
pivot=data[pivotIndex]; JvUHoc$sI  
Us9$,(3  
SortUtil.swap(data,pivotIndex,j); BJ/#V)  
9.goO|~B~  
file://partition DA4!-\bt@  
l=i-1; `~t$k7wm=  
r=j; Pb D|7IM  
do{ I^ A01\p  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;rta#pRn  
SortUtil.swap(data,l,r); FHH2  
} = &aD!nTx  
while(l SortUtil.swap(data,l,r); .+AO3~Dg  
SortUtil.swap(data,l,j); }\ui} \  
5Q72.4HH  
if((l-i)>THRESHOLD){ :kI x?cc  
stack[++top]=i; .uagD[${  
stack[++top]=l-1; }Lwj~{  
} **YNR:#Y  
if((j-l)>THRESHOLD){ 48%a${Nvvj  
stack[++top]=l+1; Ah2XwFg?  
stack[++top]=j; @p2dXJeR<  
} aEZn6k1  
p|%Y\!  
} l:+pO{7L  
file://new InsertSort().sort(data); H "?-&>V-  
insertSort(data); zT+yZA.L  
} :S7yM8 b`  
/** skP_us~  
* @param data /C8(cVNZ  
*/ kk5i{.?[  
private void insertSort(int[] data) { XKU=VOY  
int temp; vrW9<{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k0D&F;a%  
} ! xqG-rd '  
} _5YL !v&  
} R QO{fC  
NtOR/*  
} VZlvmN  
"AVj]jR  
归并排序: yxQAO_C  
\&qVr1|  
package org.rut.util.algorithm.support; ^lMnwqx<  
(U dDp"/  
import org.rut.util.algorithm.SortUtil; IA!ixabG  
!`#9#T|  
/** J2[QHr&tn  
* @author treeroot qP<,"9!I  
* @since 2006-2-2 \M532_w  
* @version 1.0 UZX)1?U  
*/ >qUO_>  
public class MergeSort implements SortUtil.Sort{ Tx_(^K  
Iq}h}Wd  
/* (non-Javadoc) b~1p.J4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YL=k&Q G  
*/ }EIwkz8  
public void sort(int[] data) { )L hO}zQ  
int[] temp=new int[data.length]; f"0H9  
mergeSort(data,temp,0,data.length-1); Y@\5gZ&T  
} o%9>elOju  
-MEz`7c~  
private void mergeSort(int[] data,int[] temp,int l,int r){ S+>]8ZY  
int mid=(l+r)/2; x)yf!Dv5$  
if(l==r) return ; fY"28#   
mergeSort(data,temp,l,mid); EhUy7b,1_  
mergeSort(data,temp,mid+1,r); CijS=-  
for(int i=l;i<=r;i++){ n*6s]iG V  
temp=data; 7Y*m_AhxJ  
} i:8^:(i  
int i1=l; kL|Y-(FPo%  
int i2=mid+1; qRGb3l  
for(int cur=l;cur<=r;cur++){ Qy/bzO  
if(i1==mid+1) c_a$g  
data[cur]=temp[i2++]; 9G8QzIac  
else if(i2>r) EH "g`r  
data[cur]=temp[i1++]; M>J ADt_]  
else if(temp[i1] data[cur]=temp[i1++]; t5Mo'*j =  
else d$,i?d,  
data[cur]=temp[i2++]; v(7A=/W_  
} E6@ ;e-]j  
} _~(Xd@c(  
:{ T#M$T  
} pNJM]-D]m~  
.- Lqo=o\  
改进后的归并排序: +?:V\niQI  
#rr-4$w+  
package org.rut.util.algorithm.support; 2,;t%GB  
!Cy2>6v7  
import org.rut.util.algorithm.SortUtil; RZtL<2.@  
uY~A0I5Z  
/** Bw=[g&+o1@  
* @author treeroot g&vEc1LNo  
* @since 2006-2-2 bX(*f>G'  
* @version 1.0 _z5CplO  
*/ C|zH {.H  
public class ImprovedMergeSort implements SortUtil.Sort { ?BZ][~n-Q  
%Nn'p"  
private static final int THRESHOLD = 10; /a|NGh%  
7 f*_  
/* <"+C<[n.  
* (non-Javadoc) RM+E  
* KRZV9AJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U.F65KaKF  
*/ /nP=E  
public void sort(int[] data) { 6;pREM+  
int[] temp=new int[data.length]; MX0B$yc$  
mergeSort(data,temp,0,data.length-1); T!a[@,)_  
} j1kc&(  
*]6dV '  
private void mergeSort(int[] data, int[] temp, int l, int r) { `@D4?8_  
int i, j, k; !gf3%!%  
int mid = (l + r) / 2; UVJ(iNK"  
if (l == r) VC(|t} L4  
return; k>CtWV5B  
if ((mid - l) >= THRESHOLD) ~m?~eJK#a  
mergeSort(data, temp, l, mid); K-u/q6ufK  
else j2Y(Q/i  
insertSort(data, l, mid - l + 1); ;#i$0~lRl  
if ((r - mid) > THRESHOLD) @GtZK  
mergeSort(data, temp, mid + 1, r); kwR@oVR^  
else vNSf:5H$  
insertSort(data, mid + 1, r - mid); TMCA?r%Y\  
w0Y%}7  
for (i = l; i <= mid; i++) { wS0bk<(  
temp = data; ?&m]du#6  
} \Agg6tY r  
for (j = 1; j <= r - mid; j++) { \W^+vuD8  
temp[r - j + 1] = data[j + mid]; N=wy)+  
} hob$eWgr  
int a = temp[l]; n5/Tn7hY  
int b = temp[r]; ?|GxVOl  
for (i = l, j = r, k = l; k <= r; k++) { Dg+d=I?  
if (a < b) { V^+:U>$w  
data[k] = temp[i++]; 'e64%t  
a = temp; oLMi vy4  
} else { CWQ2iu<_0  
data[k] = temp[j--]; m5aaY  
b = temp[j]; ?\M6P?tpo&  
} k& s7 -yY  
} Fd&!-` T?  
} PZJ 4: h  
F:S>\wG,  
/** ]Hy PJ  
* @param data ]/Qy1,  
* @param l MwqT`;lb  
* @param i a[g|APZz  
*/ /$,=>  
private void insertSort(int[] data, int start, int len) { Z<<gz[$+p  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); f {Z%:H  
}  ja- ~`  
} i%4k5[f.:  
} ?(8%SPRk  
} >1G*ya)  
p30&JJ!~"  
堆排序: yKEFne8^  
]UT|BE4v  
package org.rut.util.algorithm.support; gCr|e}w-  
L_K\i?  
import org.rut.util.algorithm.SortUtil; lY*]&8/=  
O:tX0<6  
/** /.YAFH|i)"  
* @author treeroot oImgj4C2L  
* @since 2006-2-2 ZCFf@2&z8  
* @version 1.0 eSNSnh]'  
*/ xcvr D  
public class HeapSort implements SortUtil.Sort{ '#PqI)P  
wKS-O%?  
/* (non-Javadoc) gam#6 s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %`1CE\f  
*/ uo'31V0  
public void sort(int[] data) { ]~S+nl yd<  
MaxHeap h=new MaxHeap(); !LOors za  
h.init(data); *3`oU\r  
for(int i=0;i h.remove(); DE\bYxJ  
System.arraycopy(h.queue,1,data,0,data.length); uE#,c\[8  
} g+ 1=5g  
/:{_|P\  
private static class MaxHeap{ ~uR6z//%  
n,a5LR  
void init(int[] data){ ]Bd3d%  
this.queue=new int[data.length+1]; |EV\a[  
for(int i=0;i queue[++size]=data; !FO^:V<|5  
fixUp(size); #lshN,CPm  
} 6mpg&'>  
} pNE\@U|4E  
@ PoFxv  
private int size=0; fCf#zV[  
K}E7|gdG  
private int[] queue; W#jZRviyq!  
tWSvxGCzn%  
public int get() { R=9~*9  
return queue[1]; u@_!mjXQ  
} {_XrZ(y/  
o;4e)tK  
public void remove() { ~@uY?jr  
SortUtil.swap(queue,1,size--); TF0-?vBWh  
fixDown(1); $W {yK+N  
} ,mjfZ*N  
file://fixdown gr`Ar;  
private void fixDown(int k) { [}ZPg3Y  
int j; G</I%qM  
while ((j = k << 1) <= size) { v V6Lp  
if (j < size %26amp;%26amp; queue[j] j++; SAG` ^t  
if (queue[k]>queue[j]) file://不用交换 K+@eH#Cv,(  
break; ]8m_*I!  
SortUtil.swap(queue,j,k); YP#AB]2\}  
k = j; O(D5A?tv!  
} A?IZ( Zx(`  
} B(\r+"PB  
private void fixUp(int k) { ^/C $L8#  
while (k > 1) { 1 73<x){  
int j = k >> 1; ,d>X/kd|o  
if (queue[j]>queue[k]) ?7kV+{.  
break; @9uYmkcV  
SortUtil.swap(queue,j,k); g7 Md  
k = j; -e{)v'C)  
} oa &z/`@  
} 9U=fJrj'u  
12tJrS*Z  
} ? %+VG  
Uc&6=5~Ys\  
} D,dHP-v  
:qAc= IC%  
SortUtil: =l8!VJa  
833 %H`jQc  
package org.rut.util.algorithm; uojh%@.4  
! nCjA\$  
import org.rut.util.algorithm.support.BubbleSort; xv$)u<Ve  
import org.rut.util.algorithm.support.HeapSort; JXL9Gge  
import org.rut.util.algorithm.support.ImprovedMergeSort; @Xve qUUU  
import org.rut.util.algorithm.support.ImprovedQuickSort; S0N2rU  
import org.rut.util.algorithm.support.InsertSort; (lN;xT`=  
import org.rut.util.algorithm.support.MergeSort; p<HTJ0  
import org.rut.util.algorithm.support.QuickSort; HCJ8@nki  
import org.rut.util.algorithm.support.SelectionSort; 9'n))%CZ.  
import org.rut.util.algorithm.support.ShellSort; xi?P(s A  
^$=tcoQG  
/** :J Gl>V  
* @author treeroot 'n^2|"$sH  
* @since 2006-2-2 ;v,9 v;T  
* @version 1.0 1c)\  
*/ %Ui{=920  
public class SortUtil { \m=-8KpU  
public final static int INSERT = 1; A \MfF  
public final static int BUBBLE = 2; ` /I bWu  
public final static int SELECTION = 3; !f\?c7  
public final static int SHELL = 4; #ox9&  
public final static int QUICK = 5; dU ,)TKQ  
public final static int IMPROVED_QUICK = 6; $bZu^d,  
public final static int MERGE = 7; *|LbbRu  
public final static int IMPROVED_MERGE = 8; E[jXUOu-  
public final static int HEAP = 9; 6.U  "_%  
)@Zc?Da  
public static void sort(int[] data) { /`+Hw dk  
sort(data, IMPROVED_QUICK); ~5r=FF6  
} I(OAEIz  
private static String[] name={ QN_)3lm  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" aJ :A%+1  
}; |;A9A's  
3:[!t%Yb  
private static Sort[] impl=new Sort[]{ a[1sA12  
new InsertSort(), Pqy-gWOv  
new BubbleSort(), :cc[Jco@w  
new SelectionSort(), }rz dm9  
new ShellSort(), xdd:yrC   
new QuickSort(), Gr5`1`8|  
new ImprovedQuickSort(), ~@T+mHny  
new MergeSort(), X0y?<G1( a  
new ImprovedMergeSort(), i>Z|6 5  
new HeapSort() ^uyNv-'F  
}; E tJ~dL)  
VLcyPM@"Q!  
public static String toString(int algorithm){ 0LWdJ($?  
return name[algorithm-1]; F+ffl^BQ  
} 81g9ZV(4  
Ro'jM0(KE  
public static void sort(int[] data, int algorithm) { Md8(`@`o  
impl[algorithm-1].sort(data); |Du,UY/  
} >vlQ|/C  
?. zu2  
public static interface Sort { bK3B3r#$  
public void sort(int[] data); |}_gA  
} }FPM-M3y  
{UB%(E[Mr  
public static void swap(int[] data, int i, int j) { HUj+-  
int temp = data; [O^}rUqq  
data = data[j]; N0=-7wMk(Z  
data[j] = temp; CE~r4  
} f%2%T'Q  
} hzaLx8L  
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