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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。 R  Fgy  
插入排序: Bx R% \  
z"/Mva3|  
package org.rut.util.algorithm.support; 4u} "ng   
|GPR3%9  
import org.rut.util.algorithm.SortUtil; 27mGX\T  
/** !O=?n<Ex"  
* @author treeroot =@%;6`AVcp  
* @since 2006-2-2 I,4t;4;Zk  
* @version 1.0 1~BDtHW7`n  
*/ jIY    
public class InsertSort implements SortUtil.Sort{ 9[qEJ$--  
::13$g=T9s  
/* (non-Javadoc) gq9D#B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #T\Yi|Qs#  
*/ +Kc1a;  
public void sort(int[] data) { ,Qvclu8r  
int temp; K:PzR,nn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); scmn-4j'{  
} }$DLa#\-  
} Hg)5c!F7  
} l#7].-/  
a& >(*PQ  
} ua$H"(#c  
>~O36q^w  
冒泡排序: hw[jVx  
v(ABZNIn  
package org.rut.util.algorithm.support; Nda,G++5(  
$@m)8T  
import org.rut.util.algorithm.SortUtil; LxqK@Q<B  
,(aOTFQS  
/** 7U=|>)Q0s  
* @author treeroot ~ou1{NS  
* @since 2006-2-2 kOfq6[JC  
* @version 1.0 w k1O*_76  
*/ !eb} jL  
public class BubbleSort implements SortUtil.Sort{ JTT"t@__  
C;m7 ~R  
/* (non-Javadoc) X4<!E#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U?/UW;k[  
*/ +rEqE/QF  
public void sort(int[] data) { -[-LR }u  
int temp; |Ad1/>8i  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Jvi"K  
if(data[j] SortUtil.swap(data,j,j-1); c&zZsJ"~  
} !]bXHT&!R  
} `c 3IS5  
} 8o' a  
} KP)BD;  
iUuG}rqj  
} RB]K?  
k~|nU  
选择排序: JQVu&S  
^B9rt\,q  
package org.rut.util.algorithm.support; {0(:7IY,  
-9BKa~ DVQ  
import org.rut.util.algorithm.SortUtil; xw60l&s.\L  
\EH:FM}l,  
/** u3{gX{so  
* @author treeroot H^jFvAI,8  
* @since 2006-2-2 tPO\e]  
* @version 1.0 1$,t:/'-4  
*/ <0[{Tn  
public class SelectionSort implements SortUtil.Sort { <:#O*Y{  
1VW;[ ocQ  
/* bDdJh}Vz  
* (non-Javadoc) >`rK=?12<  
* }qUNXE@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XOl]s?6H$  
*/ ; n2|pC^  
public void sort(int[] data) { z1\G,mJK  
int temp; Mwdh]I,#  
for (int i = 0; i < data.length; i++) { .K![<e Z  
int lowIndex = i; /'|'3J]HP  
for (int j = data.length - 1; j > i; j--) { \'( @{  
if (data[j] < data[lowIndex]) { 5ug?'TOj'  
lowIndex = j; Q(lj &!?1k  
} MFHPh8P  
} UA4Q9<>~  
SortUtil.swap(data,i,lowIndex); z-G|EAON"/  
}  & y1' J  
} ?p{xt$<p  
HgG-r&r!2  
} &fBLPF%6  
<}pwFl8C)  
Shell排序: % '>S9Ja3  
!O$*/7  
package org.rut.util.algorithm.support; 7I;Give{  
66\0JsT?3  
import org.rut.util.algorithm.SortUtil; #8;|_RU  
{8M=[4_`l  
/** 7e&R6j  
* @author treeroot { .KCK_ d  
* @since 2006-2-2 *[*E|by  
* @version 1.0 TQ&%SMCn  
*/ hq9b  
public class ShellSort implements SortUtil.Sort{ yhr\eiJ@6  
y:!MWZ  
/* (non-Javadoc) x&3!z[m@@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {]ZZ]  
*/ ]Jj\**  
public void sort(int[] data) { ok5 {c  
for(int i=data.length/2;i>2;i/=2){ &fYx0JT  
for(int j=0;j insertSort(data,j,i); b5YjhRimS  
} S~vbISl  
} UTQ$sg|7p  
insertSort(data,0,1); ~p~8T  
} }~lF Rf  
OVO0Emv  
/** [KkLpZG  
* @param data k/nOz*  
* @param j {! RW*B  
* @param i JH2?^h|{  
*/ c L*D_)?8  
private void insertSort(int[] data, int start, int inc) { E0=-6j  
int temp; 'MKkC(]4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =Mq=\T  
} (]0$^!YK  
} R!xs;|]  
} )!MeSWGq  
L@?Dmn'v  
} HZ=Dd4!  
BQf}S +  
快速排序: 87EI<\mP  
);$Uf!v4  
package org.rut.util.algorithm.support; ~\hA-l36  
I/9ZUxQCyG  
import org.rut.util.algorithm.SortUtil; %" $.2O@  
tklU zv  
/** JGZ,5RTq4-  
* @author treeroot x Mtl<Na   
* @since 2006-2-2 7dX1.}M<(  
* @version 1.0 %iIryv;  
*/ _jef{j  
public class QuickSort implements SortUtil.Sort{ yhEU *\:  
D_O%[u}  
/* (non-Javadoc) D0PP   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?)Lktn9%  
*/ TJ`E/=J!  
public void sort(int[] data) { lfu1PCe5  
quickSort(data,0,data.length-1); ^BjwPh4Z#  
}  DVD}  
private void quickSort(int[] data,int i,int j){ O7j$bxk/^  
int pivotIndex=(i+j)/2; J{$C}8V  
file://swap !.L%kw7z  
SortUtil.swap(data,pivotIndex,j); 5L|yF"TI#  
qB@]$  
int k=partition(data,i-1,j,data[j]); }.gDaxj  
SortUtil.swap(data,k,j); uf`o\wqU  
if((k-i)>1) quickSort(data,i,k-1); e~J% NU'&  
if((j-k)>1) quickSort(data,k+1,j); pw:<a2.  
:RHNV  
} PiI ):B>  
/** }K;@$B6,@  
* @param data [?W3XUJ,Y  
* @param i L3nHvKA]  
* @param j 5gI@~h S  
* @return xpFu$2T6P.  
*/ [x!T<jJ  
private int partition(int[] data, int l, int r,int pivot) { ,{itnKJC  
do{ .)})8csl.d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j]J2,J  
SortUtil.swap(data,l,r); qfppJ8L  
} 65ijzZL;  
while(l SortUtil.swap(data,l,r); (T n*;Xjq  
return l; 0"u*Kn  
} qChS} Q  
J~ v<Z/gm  
} 4'+/R%jk"  
_@sqCf%|  
改进后的快速排序: OjMDxG w  
 A`#v-  
package org.rut.util.algorithm.support; /lttJJDU  
8c+i+gp!  
import org.rut.util.algorithm.SortUtil; ~n]:f7?I  
t>&$_CSWK  
/** xQ1&j,R]  
* @author treeroot @)VJ,Ql$Y  
* @since 2006-2-2 O:r<es1  
* @version 1.0 'n4zFj+S  
*/ DXKk1u?Tq  
public class ImprovedQuickSort implements SortUtil.Sort { 3`#sXt9C  
|Y/iq9l  
private static int MAX_STACK_SIZE=4096; #zrD i  
private static int THRESHOLD=10; @[zPN[z .  
/* (non-Javadoc) Ca+d ?IS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,Q(n(m'  
*/ bLu6|YB  
public void sort(int[] data) { GOH@|2N  
int[] stack=new int[MAX_STACK_SIZE]; &#.XLe\y  
G7%Nwe~Y  
int top=-1; y+Q!4A  
int pivot; p`{<q -  
int pivotIndex,l,r; Fxv~;o#  
jc;&g)Rv  
stack[++top]=0; !Si ZA"  
stack[++top]=data.length-1; ; {I{X}b  
rVQ:7\=Z  
while(top>0){ u9mMkzgSkP  
int j=stack[top--]; sF_.9G)S0  
int i=stack[top--]; "TtK!>!.  
a+\ Gz  
pivotIndex=(i+j)/2; QHMXQyr(  
pivot=data[pivotIndex]; ~DqNA%Mb  
P; hjr;  
SortUtil.swap(data,pivotIndex,j); 3m7$$ N|  
_PNU*E%s<  
file://partition O|7q,bEm^  
l=i-1; Vize0fsD  
r=j; 3h 0w8(k;  
do{ FD_0FMZ9,  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0%F C;v0  
SortUtil.swap(data,l,r); ?\$77k  
} {!^HG+  
while(l SortUtil.swap(data,l,r); F\-qXSA  
SortUtil.swap(data,l,j); ?3KI}'}EM  
]o,)#/' $  
if((l-i)>THRESHOLD){ aM?7'8/  
stack[++top]=i; '-w G  
stack[++top]=l-1; J5J3%6I  
} EF)kYz!@  
if((j-l)>THRESHOLD){ c~R ElL  
stack[++top]=l+1; y*Ex5N~JC  
stack[++top]=j; PK3T@Qv89  
} )4GfT  
E6)FYz7x  
} Ku,Efr  
file://new InsertSort().sort(data); Y;&Cmi  
insertSort(data); Ks7s2vK^  
} /8W}o/,s5  
/** \,p)  
* @param data +qsdA#2  
*/ uT;Qo{G^  
private void insertSort(int[] data) { 1+#Vj#  
int temp;  PJk Mn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |C>Yd*E,C  
} H7qda' %>  
} ynP^|Ou  
} rK=[&k  
rX;(48Y  
} Y 3KCIL9  
I|WBT  
归并排序: %HYC-TF#  
S'E6#   
package org.rut.util.algorithm.support; OY"{XnPZ  
hC6$>tl  
import org.rut.util.algorithm.SortUtil; )%,bog(x  
x( mY$l,il  
/** jgEiemh&  
* @author treeroot [FyE{NfiJ%  
* @since 2006-2-2 w`#lLl B  
* @version 1.0 m"U\;Mw?  
*/ S'3l<sY  
public class MergeSort implements SortUtil.Sort{ /-BplU*"9  
|_O; U=2  
/* (non-Javadoc) i"w$D{N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mi97$Cr2  
*/ (x.K%QC)  
public void sort(int[] data) {  KsUsj3J  
int[] temp=new int[data.length]; _V8pDcY  
mergeSort(data,temp,0,data.length-1); 1Ll@ ocE  
} 9^ mrsj  
P?TFX.p7  
private void mergeSort(int[] data,int[] temp,int l,int r){ >DbG$V<v'  
int mid=(l+r)/2; -QZped;?*  
if(l==r) return ; Z71"d"  
mergeSort(data,temp,l,mid); 3j.f3~"  
mergeSort(data,temp,mid+1,r); OSkZW  
for(int i=l;i<=r;i++){ (#Y2H  
temp=data; R_@yj]%H=  
} 4qyL' \d[  
int i1=l; @9vz%1B<l  
int i2=mid+1; 2^ UFP+Yw  
for(int cur=l;cur<=r;cur++){ ]^Q`CiKd  
if(i1==mid+1) x5PQ9Bw,  
data[cur]=temp[i2++]; _|6{(  
else if(i2>r) w,`x(!&  
data[cur]=temp[i1++]; j/^0q90QO  
else if(temp[i1] data[cur]=temp[i1++]; p( Qm\g<  
else S4?ss I  
data[cur]=temp[i2++]; ND21;  
} w #1l)+  
} 25YJH1x  
vV=$N"bT~  
} AE7>jkHB  
7Bmt^J5i&t  
改进后的归并排序: >mt<`s  
eU{=x$o6S  
package org.rut.util.algorithm.support; MWhFNfS8=  
3s>& h-E  
import org.rut.util.algorithm.SortUtil; r."Dc  
F*I{?NRN1  
/** xQJdt $]U@  
* @author treeroot 26\1tOj Np  
* @since 2006-2-2 Q*KEODR8\  
* @version 1.0 VK ?,8Y  
*/ ,GR(y^S  
public class ImprovedMergeSort implements SortUtil.Sort { C=hE@  
M:C*?;K:  
private static final int THRESHOLD = 10; @p `#y  
[ 8v)\lu  
/* >#0yd7BST  
* (non-Javadoc) /"/$1F%{  
* Sf*VkH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,VHvQU  
*/ y4shW|>5_  
public void sort(int[] data) { %AW  
int[] temp=new int[data.length]; ^PWZ1.T  
mergeSort(data,temp,0,data.length-1); wF38c]r`\<  
} &:{| nDT_2  
9"<)DS  
private void mergeSort(int[] data, int[] temp, int l, int r) { a(BC(^1!  
int i, j, k; U'lrdc"Q  
int mid = (l + r) / 2; wetkmd  
if (l == r) j4brDlo?@  
return; l"ih+%S  
if ((mid - l) >= THRESHOLD) teM&[U  
mergeSort(data, temp, l, mid); 0BVMLRB  
else 5IMh$!/uc  
insertSort(data, l, mid - l + 1); YHeB <v  
if ((r - mid) > THRESHOLD) Jnv91*>h8  
mergeSort(data, temp, mid + 1, r); S!g&&RDx  
else <y`yKXzBUV  
insertSort(data, mid + 1, r - mid); T8qG9)~3  
Q7#Q6-Q  
for (i = l; i <= mid; i++) { Ui1K66{  
temp = data; -{P)\5.L  
} TWxMexiW  
for (j = 1; j <= r - mid; j++) { ,P9B8oIq  
temp[r - j + 1] = data[j + mid]; !})+WSs'"s  
} \ &_ -  
int a = temp[l]; }b,a*4pN  
int b = temp[r]; >xH3*0 Lp  
for (i = l, j = r, k = l; k <= r; k++) { !^\|r<2M  
if (a < b) { 0>.'w\,87B  
data[k] = temp[i++]; )EcF[aO  
a = temp; $'[( DwLS  
} else { kv5D=0r  
data[k] = temp[j--]; $RF"m"  
b = temp[j]; L!e@T'  
} 78NAcP~6c  
} "w_(p|cm=  
} TJO|{Lxm  
u`   
/** v8w N2[fC  
* @param data d5WE^H)E.  
* @param l sY1*Wo lA  
* @param i ,~G[\2~p  
*/ uswz@ [pa  
private void insertSort(int[] data, int start, int len) { lkl#AH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,cbP yg  
} 1lx\Pz@ol  
} _ k>j?j-  
} /?by4v73P  
} A 7TP1  
9`vse>,-hg  
堆排序: 2@A7i<p  
;N4mR6  
package org.rut.util.algorithm.support; wV(_=LF  
n}._Nb 5  
import org.rut.util.algorithm.SortUtil; (r7~ccy4  
V#sANi?mpo  
/** +/UInAM  
* @author treeroot Ya,>E@oc  
* @since 2006-2-2 4V[+6EV  
* @version 1.0 sb8SG_c.  
*/ Zi|'lHr  
public class HeapSort implements SortUtil.Sort{ H)(Jjk-O  
%Cm4a49FNi  
/* (non-Javadoc) L- =^GNh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '3<YZWS  
*/ i44KTC"sB  
public void sort(int[] data) { _s=[z$EN&  
MaxHeap h=new MaxHeap(); iF`E> %#  
h.init(data); 'RG`DzuF  
for(int i=0;i h.remove(); 0eb`9yM  
System.arraycopy(h.queue,1,data,0,data.length); >0~y "~M  
} tb_}w@:kU  
6%:'2;xM  
private static class MaxHeap{ Ou,B3kuQ+  
&Cdd  
void init(int[] data){ 67f#Z&r2k  
this.queue=new int[data.length+1]; Ho\z ^w+T`  
for(int i=0;i queue[++size]=data; O0~[]3Y[=  
fixUp(size); =I*"vwc?  
} _<5> E  
}  ^mG-O  
2#|Q =rWB  
private int size=0; LR`/pet  
beO*|  
private int[] queue; I-+D+DhRx  
WxIP~  
public int get() { P:CwC"z>sS  
return queue[1]; L18Olu  
} McA,  
@n})oAC,  
public void remove() { d)q{s(<;  
SortUtil.swap(queue,1,size--); b}k`'++2,  
fixDown(1); T\2cAW5  
} @dO~0dF  
file://fixdown Na [bCt  
private void fixDown(int k) { "esV#%:#J  
int j; iUSs)[]H>  
while ((j = k << 1) <= size) { *UEo&B2+  
if (j < size %26amp;%26amp; queue[j] j++; hX[hR  
if (queue[k]>queue[j]) file://不用交换 :a`l_RMU  
break; YMm Fpy  
SortUtil.swap(queue,j,k); =FdS'<GM  
k = j; S* <: He&1  
} oBIKt S*L  
} !&! sn"yD  
private void fixUp(int k) { (8{h I  
while (k > 1) { t'7)aJMP  
int j = k >> 1; = "Dmfy7  
if (queue[j]>queue[k]) o3%+FWrVTS  
break; Fet>KacTht  
SortUtil.swap(queue,j,k); o2Z# 5-  
k = j; H?O*  
} X;zy1ZH  
} 6``!DMDt/P  
Soq 'B?>  
} oSTGs@EK  
UJlKw `4  
} C+2*m=r  
O(wt[AEA  
SortUtil: .!=2#<  
wVw3YIN#  
package org.rut.util.algorithm; v')T^b F@  
~ dmyS?Or  
import org.rut.util.algorithm.support.BubbleSort; o- GHAQ  
import org.rut.util.algorithm.support.HeapSort; &e2") 4oh  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1oodw!hW  
import org.rut.util.algorithm.support.ImprovedQuickSort; _H@S(!  
import org.rut.util.algorithm.support.InsertSort; uvZ|6cM  
import org.rut.util.algorithm.support.MergeSort; "EhA _ =i  
import org.rut.util.algorithm.support.QuickSort; 6XB9]it6  
import org.rut.util.algorithm.support.SelectionSort; "EHwv2Hm>  
import org.rut.util.algorithm.support.ShellSort; Pm V:J9  
{6v+ Dz>  
/** !a4pKN`qLY  
* @author treeroot S,qsCnz  
* @since 2006-2-2 _[IN9ZC2G  
* @version 1.0 6?(*:}Q  
*/ }&EPH}V2n  
public class SortUtil { CA:t](xqQ  
public final static int INSERT = 1; }6ec2I%`o  
public final static int BUBBLE = 2; keCM}V`?"  
public final static int SELECTION = 3; J`V7FlM  
public final static int SHELL = 4; \$GlB+ iCx  
public final static int QUICK = 5; vvdC.4O  
public final static int IMPROVED_QUICK = 6; W aks*^|  
public final static int MERGE = 7; :'a |cjq  
public final static int IMPROVED_MERGE = 8; >L5[dkg%  
public final static int HEAP = 9; z l@ <X0q  
{n2jAR9nq  
public static void sort(int[] data) { |)yO] pB:  
sort(data, IMPROVED_QUICK); ;/ WtO2  
} >`\~=ivrD  
private static String[] name={ 62a{Ggs{  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" iv:[]o  
}; B-'Xk{  
(t fADaJM  
private static Sort[] impl=new Sort[]{ -=2tKH`Q  
new InsertSort(), 0zdH6 &  
new BubbleSort(), |a/"7B|?\  
new SelectionSort(), +qDudGI  
new ShellSort(), jSpmE  
new QuickSort(), s$|GVv1B  
new ImprovedQuickSort(), m03;'Nj'7#  
new MergeSort(), Y|>y]x  
new ImprovedMergeSort(), :J}L| `U9  
new HeapSort() D+#QQH  
}; #k5Nnv#(J  
w}YO+  
public static String toString(int algorithm){ O-5H7Kd-  
return name[algorithm-1]; ~S#Le  
} )Q&:$]  
0P&rTtU6  
public static void sort(int[] data, int algorithm) { Z[Uz~W6M]  
impl[algorithm-1].sort(data); 0ir]  
} ^JJ*pT:  
Ftu4 V*lD  
public static interface Sort { *8t_$<'dQ  
public void sort(int[] data); 0x[v)k9"0  
} Rw=g g >\  
fg^$F9@  
public static void swap(int[] data, int i, int j) { ~Wf&$p<|  
int temp = data; VuPa '2  
data = data[j]; 34&n { xv  
data[j] = temp; +{4ziqYj  
} $5s?m\!jZz  
} pma'C\b>  
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