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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。 tk66Ggi[K  
插入排序: nq 9{{oe  
E6+ 6  
package org.rut.util.algorithm.support;  I#U)  
7R#$Hm  
import org.rut.util.algorithm.SortUtil; $^5c8wT  
/** bOdQ+Y6  
* @author treeroot HSlAm&Y\  
* @since 2006-2-2 ppR; v  
* @version 1.0 L8~zQV$h  
*/ b@ OF  
public class InsertSort implements SortUtil.Sort{ bF c %  
ve*m\DU  
/* (non-Javadoc) fK10{>E1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O)D+u@RhH  
*/ @WnW @'*F  
public void sort(int[] data) { H:4? sR3  
int temp; gV;9lpZ2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .2x`Fj;o1  
} v@Bk)Z  
} >vZ^D  
} KA{ JSi  
c;doxNd6  
} R=<uf:ca  
@WTzFjv@?4  
冒泡排序: @ayrI]m#>,  
6\NBU,lY  
package org.rut.util.algorithm.support; nEfQLkb[|  
bq"dKN`  
import org.rut.util.algorithm.SortUtil; >slGicZ0  
5uO.@0  
/** ]}d.h!`<)  
* @author treeroot yv2wQ_({  
* @since 2006-2-2 Lem:zXj  
* @version 1.0 @!,W]?{  
*/ _\u?]YTv  
public class BubbleSort implements SortUtil.Sort{ N'=b8J-fF  
R:, |xz  
/* (non-Javadoc) XG8UdR|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )|`w;F>  
*/ M&5De{LS}  
public void sort(int[] data) { {8w,{p`  
int temp; JB9s# `  
for(int i=0;i for(int j=data.length-1;j>i;j--){ nD}CQ_C  
if(data[j] SortUtil.swap(data,j,j-1); !b?`TUt   
} gbT1d:T  
} H57wzG{xG  
} `8b4P>';O'  
} Ct9dV7SH  
18AlQ+')?w  
}  ?h3t"9  
9e0t  
选择排序: 9N;y^ Y\  
0<u(!iL  
package org.rut.util.algorithm.support; 4rH:`494  
F+285JK  
import org.rut.util.algorithm.SortUtil; m?`?T   
;C~:C^Q\H  
/** sg8j}^VI  
* @author treeroot %^}|HG*i??  
* @since 2006-2-2 ^-dhz88wV  
* @version 1.0 '=cAdja  
*/ !xz{X?  
public class SelectionSort implements SortUtil.Sort { /(?,S{]  
Cd'K~Ch3  
/* b&I{?'"%8  
* (non-Javadoc) l]F)]>AE  
* YTV|]xpR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %d2\4{{S  
*/ 3$h yV{  
public void sort(int[] data) { e)2w&2i`(F  
int temp; -b'a-?  
for (int i = 0; i < data.length; i++) { (i>bGmiN  
int lowIndex = i; lj"72   
for (int j = data.length - 1; j > i; j--) { ' qN"!\  
if (data[j] < data[lowIndex]) { v<V9Z <ub  
lowIndex = j; Hi#f Qji  
} +~'ap'k m  
} o`~ %}3  
SortUtil.swap(data,i,lowIndex); }<mK79m  
} mecm,xwm  
} 5sguv^;C5  
+d JLT}I8M  
} 6 u}c543  
BiD}C  
Shell排序: H\<^p",`  
*IV_evgM7  
package org.rut.util.algorithm.support; 6w*q~{"(  
"XWO#,Ue  
import org.rut.util.algorithm.SortUtil; zz1]6B*eX  
*Fm#Qek  
/** T )"U q  
* @author treeroot 3mH(@ -OA  
* @since 2006-2-2 U_ *K%h\m  
* @version 1.0 ER)to<k  
*/ >;Vy{bL8  
public class ShellSort implements SortUtil.Sort{ y({EF~w  
Y<[jUe`O;  
/* (non-Javadoc) |$sMzPCxOk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H@V+Q}  
*/ T56%3i  
public void sort(int[] data) { #6F/:j;  
for(int i=data.length/2;i>2;i/=2){ Qcs >BOV~  
for(int j=0;j insertSort(data,j,i); ILMXWw  
} 7N}==T89[  
} [hXnw'Im/  
insertSort(data,0,1); )=6o  ,  
} K&UTs$_cI  
$pfN0/`(  
/** lWWy|r'il  
* @param data I9g!#lbl  
* @param j B'~CFj0W%=  
* @param i dc%0~Nz  
*/ YZQF*fj  
private void insertSort(int[] data, int start, int inc) { ]hjA,p@Q  
int temp; RinaGeim  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *k<{nj@y  
} 2; ~jKR[~  
} Y^9b>H\2  
} \Zmn!Gg  
K4j2xSGeo  
} q.Vcb!*$  
  7)  
快速排序: ZFa<{J<2  
-| YDKcL  
package org.rut.util.algorithm.support; mxkv{;ad  
f1 TYQ?e  
import org.rut.util.algorithm.SortUtil; CZ}%\2>-v  
g"|Z1iy|9  
/** 6;%Ajx  
* @author treeroot 8bW,.to(?x  
* @since 2006-2-2 iYBp"+#2  
* @version 1.0 CT#u+]T  
*/ P=PVOt@ b  
public class QuickSort implements SortUtil.Sort{ VY_<c98v  
82A[[^`  
/* (non-Javadoc) drW}w+ !  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $x|4cW2  
*/ IM*T+iRKqF  
public void sort(int[] data) { YCS8qEP&  
quickSort(data,0,data.length-1); j6r.HYX!  
} I>(-&YbC  
private void quickSort(int[] data,int i,int j){ Lk:Sju  
int pivotIndex=(i+j)/2; v&}^8j  
file://swap ,<,#zG[.  
SortUtil.swap(data,pivotIndex,j); vu=`s|R  
Lzy Ix!S  
int k=partition(data,i-1,j,data[j]); Yo a|.2f  
SortUtil.swap(data,k,j); K f}h{X  
if((k-i)>1) quickSort(data,i,k-1); m8C scC Z}  
if((j-k)>1) quickSort(data,k+1,j); uZkh.0yB  
_MST8  
} p!RyxB1.|  
/** Ct\n1T }  
* @param data O.^1r  
* @param i NI33lp$V  
* @param j XR.Sm<A[  
* @return 02 6|u|R  
*/ ,BuEX#ZaBl  
private int partition(int[] data, int l, int r,int pivot) { Az4a|.  
do{ $5S/~8g(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8*m=U@5]  
SortUtil.swap(data,l,r); D?6ah=:&R  
} V{+5Fas^l  
while(l SortUtil.swap(data,l,r); >4x~US[VB  
return l; rWnZIt"  
} ;+Uc} =  
ua HB\Uc  
} *h Z{>  
R@Bnrk  
改进后的快速排序: MaQ`7U5 |e  
v''F\V )  
package org.rut.util.algorithm.support; /FW{>N1   
U5pg<xI  
import org.rut.util.algorithm.SortUtil; d>r_a9 .u  
#Y;tobB  
/** N\Li/  
* @author treeroot mjXO}q7  
* @since 2006-2-2 @>4=}z_e  
* @version 1.0 g@][h_? {  
*/ M<VZISu)dy  
public class ImprovedQuickSort implements SortUtil.Sort { SJ;Kjq.Qo  
%X>P+6<=  
private static int MAX_STACK_SIZE=4096; })^%>yLfc|  
private static int THRESHOLD=10; |6y(7Ha  
/* (non-Javadoc) )Ept yH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cO^}A(Ma(  
*/ jo ^+  
public void sort(int[] data) { xXn2M*g  
int[] stack=new int[MAX_STACK_SIZE]; R#w9%+  
Y~C;M6(P  
int top=-1; q>H f2R  
int pivot; [G>U>[u|  
int pivotIndex,l,r; .L'eVLQe  
:3$-Qv X  
stack[++top]=0; -/z#?J\  
stack[++top]=data.length-1; "[M k5tM  
Z9vJF.clO  
while(top>0){ [S#QGB19  
int j=stack[top--]; ? > 7SZiC`  
int i=stack[top--]; R<AT}!mkR  
B`1"4[{  
pivotIndex=(i+j)/2; `-QY<STTP9  
pivot=data[pivotIndex]; y4Fuh nb>  
pR*)\@ma  
SortUtil.swap(data,pivotIndex,j); "? t@Y  
]<B@g($  
file://partition * M,'F^E2  
l=i-1; Q\k|pg?  
r=j; p:@JCsH=  
do{ #V:28[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _8eN^oc%  
SortUtil.swap(data,l,r); ZclZD{%8J  
} )/_T`cN  
while(l SortUtil.swap(data,l,r); XEvDtDR  
SortUtil.swap(data,l,j); U9:w^t[Pp  
vh">Z4  
if((l-i)>THRESHOLD){  Z?_ t3  
stack[++top]=i;  Lkl+f~m  
stack[++top]=l-1; }8,[B50  
} |E =8  
if((j-l)>THRESHOLD){ +K"8Q'&t  
stack[++top]=l+1; LA%t'n h  
stack[++top]=j; [>y0Xf9^  
} 4~YPLu  
Se>"=[=  
} N@>o:(08  
file://new InsertSort().sort(data); 0^ IHBN?9  
insertSort(data); 1`z^Xk8vt  
} g Xi& S  
/** 0z1UF{{  
* @param data k),!%6\(  
*/ :*0l*j  
private void insertSort(int[] data) { =SqI# v  
int temp;  J0Ik@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t3b64J[A{  
} UI}df<Ge  
} ~|t 7  
} }W)c-91  
]x<`(  
} G<f"_NT  
d9>k5!  
归并排序: ,j|9Bs  
13v#  
package org.rut.util.algorithm.support; C% )Xz  
6}aH>(3!A  
import org.rut.util.algorithm.SortUtil; d5z?QI  
X 'W8 mqk  
/** eO?.8OM-a  
* @author treeroot = ^OXP+o  
* @since 2006-2-2 j9XRC9   
* @version 1.0 f#3U,n8:  
*/ aHzS>  
public class MergeSort implements SortUtil.Sort{ @ a?^2X^  
; M%n=+[O  
/* (non-Javadoc) EX.`6,:+2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fZ)M Dq  
*/ alB[/.1  
public void sort(int[] data) { vsU1Lzna6@  
int[] temp=new int[data.length]; (g>>   
mergeSort(data,temp,0,data.length-1); +>,4d  
} TtZ '~cGR  
bw\a\/Dw  
private void mergeSort(int[] data,int[] temp,int l,int r){ (&y~\t] H  
int mid=(l+r)/2; )n&@`>vm  
if(l==r) return ; ',<B o{  
mergeSort(data,temp,l,mid); +zz\*  
mergeSort(data,temp,mid+1,r); X\dPQwasM  
for(int i=l;i<=r;i++){ 7Ne`F(c  
temp=data; 4?3*%_bDJ,  
} Rl2*oOVz  
int i1=l; 28N v'  
int i2=mid+1; 3TS(il9A  
for(int cur=l;cur<=r;cur++){ ;E{k+vkqy  
if(i1==mid+1) j>KJgSs]&\  
data[cur]=temp[i2++]; V7\@g  
else if(i2>r) qbwX*E~ ;  
data[cur]=temp[i1++]; ZI8*PX%2  
else if(temp[i1] data[cur]=temp[i1++]; J4 Tc q  
else B9glPcy}SS  
data[cur]=temp[i2++]; }hPFd  
} $B3<"  
} ,(  ?q  
I2R" Y<  
} OE=]/([  
D$wl.r  
改进后的归并排序: tAM t7p-  
nn0`A3  
package org.rut.util.algorithm.support; :"pA0oB  
WHM|kt  
import org.rut.util.algorithm.SortUtil; uN)o|7  
6zGM[2  
/**  3~mi  
* @author treeroot 9 Z 5!3  
* @since 2006-2-2 $%3"@$  
* @version 1.0 ? !dy  
*/ v9t26>{~  
public class ImprovedMergeSort implements SortUtil.Sort { [1\k'5rp  
eA$wJ$*   
private static final int THRESHOLD = 10; 0F495'*A  
_+vE(:T  
/* T|{1,wP  
* (non-Javadoc) /4}B}"`Sl=  
* mT7B#^H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kX2bU$1Q,i  
*/ 0"vI6Lm  
public void sort(int[] data) { %}nNwuJ  
int[] temp=new int[data.length]; A=(<g";m  
mergeSort(data,temp,0,data.length-1); 7t@r}rC,K  
} v|&Nh?r  
?Bdhn{_  
private void mergeSort(int[] data, int[] temp, int l, int r) { !FqJP OGm  
int i, j, k; /g_cz&luR  
int mid = (l + r) / 2; zB?} {@  
if (l == r) p:GB"e9>H  
return; LL}|# %4d  
if ((mid - l) >= THRESHOLD) r}1.=a  
mergeSort(data, temp, l, mid); xxsax/h  
else oVK3=m@ {  
insertSort(data, l, mid - l + 1); E,/<;  
if ((r - mid) > THRESHOLD) t Lz,t&h  
mergeSort(data, temp, mid + 1, r); i Sm .E  
else ID#p5`3n  
insertSort(data, mid + 1, r - mid); m!qbQMXn  
IsC`r7  
for (i = l; i <= mid; i++) { +p%!G1Yz  
temp = data; %l#i9$s  
} T;f`ND2fY  
for (j = 1; j <= r - mid; j++) { DaN=NURDV  
temp[r - j + 1] = data[j + mid]; E=-ed9({:  
} cQ?eL,z  
int a = temp[l]; TvbkvK  
int b = temp[r]; \%qzTk.&r  
for (i = l, j = r, k = l; k <= r; k++) { TspuZR@2  
if (a < b) { su/!<y  
data[k] = temp[i++]; .}wVM`81z  
a = temp; q, 8TOn  
} else { oV(|51(f  
data[k] = temp[j--]; X4c|*U=4  
b = temp[j]; 3u)NkS=  
} biBo?k;4  
} sUCI+)cM3  
} cIL I%W1  
V+A9.KoI  
/** i; qb\  
* @param data 2~*J<iO&l  
* @param l e|t@"MxvC  
* @param i JZa^GW:YQh  
*/ E=H>|FgS  
private void insertSort(int[] data, int start, int len) { z^ai *   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +PlA#DZu  
} l8XgzaW  
} LXZ0up-B-  
} V>$A\AWw  
} {CO]wqEj  
e2~$=f-  
堆排序: wNk 0F7Ck  
L[|($vQ"  
package org.rut.util.algorithm.support; P1r)n{;  
<WHu</  
import org.rut.util.algorithm.SortUtil; hLv~N}  
B$ Z%_j&  
/** Qb.Ve7c  
* @author treeroot QGR}`n2D  
* @since 2006-2-2 ^5MPK@)c,/  
* @version 1.0 W<QMUu  
*/ >l0y ss)I  
public class HeapSort implements SortUtil.Sort{ u/I|<NAC,  
K+s@.D9J  
/* (non-Javadoc) B2R^oL' }  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a_GnN\kX^Z  
*/ >8* 0"Q  
public void sort(int[] data) { R7nT,7k.  
MaxHeap h=new MaxHeap(); YQH=]5r  
h.init(data); ;v*J:Mn/=  
for(int i=0;i h.remove(); __3s3YG  
System.arraycopy(h.queue,1,data,0,data.length); I1a>w=x!+  
} ma gZmY~  
c SV`?[a  
private static class MaxHeap{ 7K5D,"D;1  
9GV1@'<Y]  
void init(int[] data){ $ #*";b)QY  
this.queue=new int[data.length+1]; C8xxR~mq  
for(int i=0;i queue[++size]=data; j& H4L  
fixUp(size); 5Al1u|;HB  
} N4xC Zb  
} 1@i|[dq  
`<"@&N^d  
private int size=0; YUGEGXw  
H,{WrWA  
private int[] queue; B%.vEk)*  
G[bWjw86O  
public int get() { w|k?2 ?&  
return queue[1]; mr 6~8 I  
} ]U,c`?[7#  
FJ/c(K  
public void remove() { -PG81F&K  
SortUtil.swap(queue,1,size--); ^D%hKIT  
fixDown(1); kA"|PtrW  
} j@Ta\a-,x  
file://fixdown VqIzDs  
private void fixDown(int k) { }x9D;%)/  
int j; UqA<rW  
while ((j = k << 1) <= size) { }MiEbLduN  
if (j < size %26amp;%26amp; queue[j] j++; XHh!Q0v;  
if (queue[k]>queue[j]) file://不用交换 ;h-W&i7  
break; t/kMV6  
SortUtil.swap(queue,j,k); 0p31C7!  
k = j; >x3$Ld  
} T[L7-5U0  
} %aB RL6  
private void fixUp(int k) { L%CBz]`  
while (k > 1) { %*A|hK+G:W  
int j = k >> 1; "C/X#y   
if (queue[j]>queue[k]) og~Uv"&?T  
break; 0DB8[#i%:  
SortUtil.swap(queue,j,k); z|k0${iu#  
k = j; '| 6ZPv&N  
} ' O+)[D  
} Gpb<,v_3  
y[64O x  
} #1z/rUh`Cr  
?s-Z3{k  
} _pN:p7l(  
c]+uj q  
SortUtil: @4]} J-3  
`Q!#v{  
package org.rut.util.algorithm; +td]g9Ie  
GD -cP5$  
import org.rut.util.algorithm.support.BubbleSort; 6>Z)w}x^  
import org.rut.util.algorithm.support.HeapSort; ;ipT0*Y  
import org.rut.util.algorithm.support.ImprovedMergeSort; TZ+- >CG  
import org.rut.util.algorithm.support.ImprovedQuickSort; z4iTf8  
import org.rut.util.algorithm.support.InsertSort; b9Mp@I7Q-  
import org.rut.util.algorithm.support.MergeSort; 8:sQB% BB  
import org.rut.util.algorithm.support.QuickSort; *mjPNp'3{m  
import org.rut.util.algorithm.support.SelectionSort; bP)( 4+t~  
import org.rut.util.algorithm.support.ShellSort; 1$#1  
8n"L4jb(:  
/** U0ZPY )7k  
* @author treeroot !Pc&Sg  
* @since 2006-2-2 Wi+}qO  
* @version 1.0 F^Y%Q(Dd7w  
*/ @QO^3%b8  
public class SortUtil { hQ@E2Xsv  
public final static int INSERT = 1; .gclE~h.  
public final static int BUBBLE = 2; gski:C   
public final static int SELECTION = 3; h3rVa6cxM  
public final static int SHELL = 4; QF4)@ r{2x  
public final static int QUICK = 5; 9q]n &5  
public final static int IMPROVED_QUICK = 6; k4-S:kVo  
public final static int MERGE = 7; V)Sw\tS6g  
public final static int IMPROVED_MERGE = 8; $z[@DB[  
public final static int HEAP = 9; \&MJ(F>vJ  
3]li3B'  
public static void sort(int[] data) { )qua0'y]@  
sort(data, IMPROVED_QUICK); X#<+D1P  
} !!+LFe4su  
private static String[] name={ ;wa#m1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" VD~ %6AjyN  
}; "8iIOeY-\  
P}=U #AV4  
private static Sort[] impl=new Sort[]{ ' >k1h.i  
new InsertSort(), yXT.]%)  
new BubbleSort(), M3VTzwuf^S  
new SelectionSort(), `>Ms7G9S~e  
new ShellSort(), -x VZm8y  
new QuickSort(), tNG[|Bi#  
new ImprovedQuickSort(), hYbaVE  
new MergeSort(), nt_FqUJ  
new ImprovedMergeSort(), W+I""I*mV  
new HeapSort() bk|?>yd  
}; ^O QeOTF  
0WSOA[R%[b  
public static String toString(int algorithm){ L_Xbca=  
return name[algorithm-1]; nIWY<Z"  
} Vtv~jJ{m  
]YrgkC35  
public static void sort(int[] data, int algorithm) { hplxs#  
impl[algorithm-1].sort(data); sQmJ3 (:HO  
} sLd%m+*p  
[4r<WvUaM  
public static interface Sort { j;J`P H  
public void sort(int[] data); 6F_:,b^  
} 5c0$oyl)M  
5VSc5*[  
public static void swap(int[] data, int i, int j) { rpUTn!*u/  
int temp = data; .aQ8I1~  
data = data[j]; .#}A/V.-Y  
data[j] = temp; _H"_&m$aDm  
} !n<SpW;  
} +xS<^;   
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