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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。 e/m'a|%:  
插入排序: ]4LT#  
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package org.rut.util.algorithm.support; A>&>6O4  
1I:"0("}  
import org.rut.util.algorithm.SortUtil; ZmYa.4'L  
/** 4iL.4Uj{N  
* @author treeroot ~T;a jvJ  
* @since 2006-2-2 ^`hI00u(  
* @version 1.0 Ba\wq:  
*/ %WJ\'@O\  
public class InsertSort implements SortUtil.Sort{ pw(U< )  
\'}/&PCkr  
/* (non-Javadoc) Y]`lEq%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h&:Q$*A>   
*/ sqMNon`5  
public void sort(int[] data) { ?,+C!R?  
int temp; >8F{lbEe  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @xW"rX#7f  
} &cn%4Er  
} K~fDv  i  
} eEg1-  
f:JYG]E&  
} P?3YHa^up  
V5(tf'  
冒泡排序: ezhfKt]j  
dp2FC   
package org.rut.util.algorithm.support; xCyD0^KY  
PG @C5Rnu  
import org.rut.util.algorithm.SortUtil; ZTj!ti;5  
Ef3=" }AI;  
/** e@ 5w?QzW  
* @author treeroot ? :A%$T  
* @since 2006-2-2 Tm0\Oue0  
* @version 1.0 M5x MTP-  
*/ DYrci?8Ith  
public class BubbleSort implements SortUtil.Sort{ #MviO!@  
b/tc D r  
/* (non-Javadoc) 9`CJhu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iAeq%N1(0  
*/ BQv*8Hg B6  
public void sort(int[] data) { @y6^/'  
int temp; aU$8 0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0d89>UB-8q  
if(data[j] SortUtil.swap(data,j,j-1); H> n;[  
} |Qpd<L  
} g6$\i m  
} _s:5)  
} ) bd`U  
e?\hz\^  
} mZ0_^  
y>cT{)E$  
选择排序: -vh\XO  
mR#"ng  
package org.rut.util.algorithm.support; ]<9o>#3  
kLXa1^Lq  
import org.rut.util.algorithm.SortUtil; J:IAs:e`  
BFqM6_/J  
/** 61sEeM  
* @author treeroot /N")uuv  
* @since 2006-2-2 q6o}2<T@  
* @version 1.0 TXbi>t:/S{  
*/ n<eK\ w  
public class SelectionSort implements SortUtil.Sort { 6I|9@~!y[  
f %P#.  
/* d_ &~^*>  
* (non-Javadoc) Gsy90  
* $dKo}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E};1 H  
*/ 4KW_#d`t  
public void sort(int[] data) { >keY x<1  
int temp; @mcP-  
for (int i = 0; i < data.length; i++) { =`!# V/=  
int lowIndex = i; \SWuylE  
for (int j = data.length - 1; j > i; j--) { ZfS"  
if (data[j] < data[lowIndex]) { Y+EwBg)co  
lowIndex = j; aCyn9Y$=  
} Smd83W&  
} R0nUS<b0  
SortUtil.swap(data,i,lowIndex); ,0?3k  
} Qe]&  
} Q.V+s   
l\u5RMS('  
} {axRq'=  
ApcE)mjpc  
Shell排序: ^~3{n  
!F2JT@6  
package org.rut.util.algorithm.support; vJQ_mz  
>/.Ae8I)  
import org.rut.util.algorithm.SortUtil; bV*q~ @xh  
TUQe.oAi  
/** jz I,B  
* @author treeroot 1NAtg*`  
* @since 2006-2-2 D e$K  
* @version 1.0 )$O'L7In&  
*/ DRRy5+,I  
public class ShellSort implements SortUtil.Sort{ }9Q<<a  
&hWYw+yH\  
/* (non-Javadoc) Q:]v4 /MT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oCKn  
*/ +@do<2l]  
public void sort(int[] data) { `Tr !Gj_  
for(int i=data.length/2;i>2;i/=2){ /vqsp0e"H  
for(int j=0;j insertSort(data,j,i); 3B4C@ {  
} i}C%`1+(  
} zB6&),[,v  
insertSort(data,0,1); 9"dZ4{\!  
} ,!98V Jmr  
OV-#8RXJ  
/** .0dx@Sbv  
* @param data Wf&i{3z[  
* @param j * [b~2  
* @param i q=k[]vD  
*/ :eSwXDy&  
private void insertSort(int[] data, int start, int inc) { KPa@~rU  
int temp; - ysd`&  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )!sjXiC!h  
} ?!bA#aSbl5  
} T 6=~vOzTJ  
} 8]JlYe  
"g1Fg.o  
} @nM+*0 $d  
D Z=OZ.v  
快速排序: Gx(%AB~9$  
ahw0}S  
package org.rut.util.algorithm.support; iv6bXV'N  
tk+t3+  
import org.rut.util.algorithm.SortUtil; .b<wNUzP  
_2xYDi  
/** ^E3 HY@j  
* @author treeroot B,A\/%<  
* @since 2006-2-2 '~pZj"uy  
* @version 1.0 ^!K 8nW{*  
*/ (U*Zz+ R   
public class QuickSort implements SortUtil.Sort{ J*qo3aJjE  
;!<@Fm9W  
/* (non-Javadoc) f'u[G?C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^>h2.A J  
*/ 21~~=+)X  
public void sort(int[] data) { ;{"uG>#R  
quickSort(data,0,data.length-1); U5j0i]  
} N 0(($8G  
private void quickSort(int[] data,int i,int j){ q/3co86c  
int pivotIndex=(i+j)/2; ?WrL<?r)}U  
file://swap inyS4tb  
SortUtil.swap(data,pivotIndex,j); ?MJ5GVeH  
^NO;A=9b[  
int k=partition(data,i-1,j,data[j]); 1 <wolTf  
SortUtil.swap(data,k,j); L$; gf_L  
if((k-i)>1) quickSort(data,i,k-1); d)v!U+-|'  
if((j-k)>1) quickSort(data,k+1,j); R)9FXz$).  
> V@,K z1  
} w%kaM=  
/** %&4\'lE  
* @param data dkOERVRe  
* @param i PjU.4aZ  
* @param j *G,r:Bnb  
* @return kk/vgte-)e  
*/ cqb]LC  
private int partition(int[] data, int l, int r,int pivot) { z9^_5la#  
do{ bpfSe  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @C5 %`{\  
SortUtil.swap(data,l,r); 4,ewp coC%  
} g)iw.M2  
while(l SortUtil.swap(data,l,r); zfUkHL6  
return l; xf8.PqVNo  
} Jl89}Sf  
&3Mps[u:h  
} &sS]h|2Z5  
aGmbB7[BZ  
改进后的快速排序: Wr.~Ns <  
rXnG"A  
package org.rut.util.algorithm.support; f{#Mc  
,CnUQx0  
import org.rut.util.algorithm.SortUtil; ^4>Icz^ F  
\J^xpR_0u  
/** V;]U]   
* @author treeroot 20mZ{_%  
* @since 2006-2-2 jp-]];:aPJ  
* @version 1.0 J i:0J},m  
*/ .n)0@X!  
public class ImprovedQuickSort implements SortUtil.Sort { A;Uw b  
A*3R@G*h  
private static int MAX_STACK_SIZE=4096; 8hvh xp  
private static int THRESHOLD=10; L&~>(/*7U  
/* (non-Javadoc) r7N% onx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #>qA&*+{n  
*/ ,NQ>,}a0  
public void sort(int[] data) { x:IY6  l  
int[] stack=new int[MAX_STACK_SIZE]; p2o6 6t  
D{s4Bo-  
int top=-1; NKw}VW'|  
int pivot; OGU#%5"<  
int pivotIndex,l,r; |n.ydyu`  
| b)N;t  
stack[++top]=0; +@K8:}lOW  
stack[++top]=data.length-1; Z!qF0UDj  
v:@ud,d<  
while(top>0){ gPWl#5P:  
int j=stack[top--]; 58_aI?~>>  
int i=stack[top--]; ki|w?0s  
Cl3hpqv1I  
pivotIndex=(i+j)/2; k3t2{=&'&x  
pivot=data[pivotIndex]; [0hZg  
gc{5/U9H*  
SortUtil.swap(data,pivotIndex,j); DX#F]8bWl  
%q,^A+=  
file://partition BcD%`vGJ  
l=i-1; e\>g@xE%  
r=j; WjMP]ND#c  
do{ =;HmU.Uek%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +v'n[xa1v  
SortUtil.swap(data,l,r); 78<QNl Kn  
} &0S/]E`_M  
while(l SortUtil.swap(data,l,r); `o!a RX  
SortUtil.swap(data,l,j); +)K yG  
{v}jV{'^um  
if((l-i)>THRESHOLD){ EAjo>GLI  
stack[++top]=i; jRIm_)  
stack[++top]=l-1; ph=[|P)  
} ;^:$O6J7T~  
if((j-l)>THRESHOLD){ hk1jxnQ h  
stack[++top]=l+1; _i{4 4zE  
stack[++top]=j; VR0#"  
} quw:4W>  
]6{\`a  
} E.~~.2   
file://new InsertSort().sort(data); _ a,XL<9I  
insertSort(data); >~^##bIb  
} W4(O2RU  
/** z?8Sie  
* @param data 6 _\j_$  
*/ 4i o02qd 4  
private void insertSort(int[] data) { 3$ 1 z  
int temp; '$n#~/#}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )hai?v~g  
} -d6*M*{|  
} 8RR6f98FF  
} @3b|jJyf  
E={W^k!Vz:  
} CVFsp>+  
in6iJ*E@'  
归并排序: \4`2k  
l?%U*~*  
package org.rut.util.algorithm.support; !Rw\k'<GKX  
\i#0:3s.  
import org.rut.util.algorithm.SortUtil; 8rwYNb.P  
UQ3@@:L_  
/** kwHqvO!G  
* @author treeroot VkpHzr[k  
* @since 2006-2-2 b(RB G  
* @version 1.0 0[lsoYUq  
*/ rQEi/  
public class MergeSort implements SortUtil.Sort{ %)axGbZG;  
@ EmGexLPM  
/* (non-Javadoc) d9Z&qdxTKq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 90s;/y(  
*/ T|@#w%c''  
public void sort(int[] data) { %5h^`lp  
int[] temp=new int[data.length]; %f(S'<DhC  
mergeSort(data,temp,0,data.length-1); 85D^@{  
} @8nLQh^  
qWO]s=V!  
private void mergeSort(int[] data,int[] temp,int l,int r){ wn+j39y?ZY  
int mid=(l+r)/2; j/9WOIfa  
if(l==r) return ; \2Og>{"U  
mergeSort(data,temp,l,mid); t<sNc8x  
mergeSort(data,temp,mid+1,r); 3@)obb  
for(int i=l;i<=r;i++){ e40udLH~x  
temp=data; @Y UY9+D&  
} ,;.B4  
int i1=l; EqnpMHF  
int i2=mid+1; {pDTy7!Hs  
for(int cur=l;cur<=r;cur++){ UP;Q=t  
if(i1==mid+1) A XBkJ'jd  
data[cur]=temp[i2++]; hOPe^e"  
else if(i2>r) d(fPECv(  
data[cur]=temp[i1++]; > BNw  
else if(temp[i1] data[cur]=temp[i1++]; b]*X<,p  
else hr$Sa  
data[cur]=temp[i2++]; ?j/kOD0  
} _BV`,`8}  
} QqtC`H\  
Wp5]Uk  
} P8wy*JvT  
EZ"bW  
改进后的归并排序: +z-[s6q2m  
MZ|\S/  
package org.rut.util.algorithm.support; $Z;BQJVH  
zF5q=9 4$  
import org.rut.util.algorithm.SortUtil; ja[OcR-tX  
Vkr`17`G  
/** '{[!j6wt\  
* @author treeroot $PSY:Zz  
* @since 2006-2-2 Q.,DZp   
* @version 1.0 ( 0i'Nb"  
*/ }:`5,b%Y_  
public class ImprovedMergeSort implements SortUtil.Sort { V+lRi"m?|  
w[(n>  
private static final int THRESHOLD = 10; {-@~Q.&}v  
5Yi Z-CQ>  
/* [pii  
* (non-Javadoc) GQN98Y+h  
* lhqQ CV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nr OqH  
*/ k(P3LJcYQ  
public void sort(int[] data) { -bypuMQ-p  
int[] temp=new int[data.length]; QDS0ejhp  
mergeSort(data,temp,0,data.length-1); gnt45]@{  
} L[9OVD  
qZaO&"q  
private void mergeSort(int[] data, int[] temp, int l, int r) { mD7}t  
int i, j, k; *z0K%@M  
int mid = (l + r) / 2; D(Qa>B"1  
if (l == r) W57&\PXYn  
return; TPHYz>D]  
if ((mid - l) >= THRESHOLD) |olNA*4  
mergeSort(data, temp, l, mid); 0p-#f|ET  
else FV A UR  
insertSort(data, l, mid - l + 1); IX9K.f  
if ((r - mid) > THRESHOLD) 0[/vQ+O]2  
mergeSort(data, temp, mid + 1, r); -kl;!:'.3  
else A 4j<\xL  
insertSort(data, mid + 1, r - mid); 3gpo %  
c45tmul  
for (i = l; i <= mid; i++) { sAi&A9"*   
temp = data; `(!NYx  
} j 1(T )T  
for (j = 1; j <= r - mid; j++) { _gKu8$o=-  
temp[r - j + 1] = data[j + mid]; Z,WubX<  
} %e{(twp  
int a = temp[l]; f =o4I2Y[  
int b = temp[r]; <Nex8fiJ9  
for (i = l, j = r, k = l; k <= r; k++) { pI>*u ]x  
if (a < b) { "u;YI=+  
data[k] = temp[i++]; I!0JG`&  
a = temp; HA!t$[_Ve  
} else { xP{-19s1]  
data[k] = temp[j--]; !h CS#'  
b = temp[j]; lkA^\ +Ct  
} Cxm6TO`-;  
} s~J=<)T*6  
} T~X41d\  
WfG(JJ  
/** 'wZ_4XjD  
* @param data mc ZGg;3  
* @param l D{p5/#|r  
* @param i e1unzpWN  
*/ \ZS TKi?  
private void insertSort(int[] data, int start, int len) { *| YU]b;W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sqpGrW.  
} )11W)G`w  
} \jyjQ,v)  
} =&Xdm(  
} 0|XKd24BN  
b`CWp;6Y  
堆排序: q[ ULG v  
.:y5U}vR  
package org.rut.util.algorithm.support; ^s{hs(8%R  
:p>hW!~  
import org.rut.util.algorithm.SortUtil; :CaTP%GW  
ZenPw1-  
/** S`iR9{+&  
* @author treeroot !>n|c$=;qk  
* @since 2006-2-2 Mvb':/M  
* @version 1.0 YT=eVg53  
*/ & Kmy}q  
public class HeapSort implements SortUtil.Sort{ ^Kqf ~yS%  
.!RavEg+  
/* (non-Javadoc) uZIJoT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _BS 9GB  
*/ 5mgHlsDzu  
public void sort(int[] data) { Jdj?I'XtY  
MaxHeap h=new MaxHeap(); |QMA@Mx  
h.init(data); +Ok%e.\ZM  
for(int i=0;i h.remove(); 6|!NLwa  
System.arraycopy(h.queue,1,data,0,data.length); 3c#s|qW  
} XErUS80  
?Elg?)os  
private static class MaxHeap{ V8PLFt;  
"DQ'C%sL9  
void init(int[] data){ ^Ga&}-  
this.queue=new int[data.length+1]; f:woP7FP  
for(int i=0;i queue[++size]=data; pQWHG#?7  
fixUp(size); ?j{C*|yHO  
} OBOwz4<  
} T_;]fPajjD  
DlTR|(AL  
private int size=0; w? LrJ37u  
*:hy Y!x  
private int[] queue; mfom=-q3k  
Dl C@fZD  
public int get() { ".U^if F  
return queue[1]; riCV&0"n  
} Br5o7(AE  
W5pb;74|  
public void remove() { ^Q.,\TL01  
SortUtil.swap(queue,1,size--); {0v*xL_O^  
fixDown(1); bwiD$  
} E(^0B(JF  
file://fixdown v]"L]/"  
private void fixDown(int k) {  L}%dCe  
int j; #sB,1"  
while ((j = k << 1) <= size) { edvFQ#,d  
if (j < size %26amp;%26amp; queue[j] j++; 7J*N_8?2  
if (queue[k]>queue[j]) file://不用交换 ?+2b(2&MXE  
break; PmX2[7  
SortUtil.swap(queue,j,k); sL^yB  
k = j; < <Y}~N  
} SJ?)%[(T  
} #VGjCEeU  
private void fixUp(int k) { b]Z@^<_E  
while (k > 1) { aFj.i8+  
int j = k >> 1; 4n0xE[-  
if (queue[j]>queue[k]) /)>S<X  
break; cYNV\b4-  
SortUtil.swap(queue,j,k); lr@#^  
k = j; 8g~EL{'  
} q]% T:A=  
} /rc%O*R  
1(#;&:$`i  
} d 8o53a]  
NHQF^2\\  
} M+P$/Wk  
^%>kO,  
SortUtil: m D58T2 Z  
jd-glE,Y/  
package org.rut.util.algorithm; K^[#]+nQ  
LnsD  
import org.rut.util.algorithm.support.BubbleSort; Ao9R:|9  
import org.rut.util.algorithm.support.HeapSort; DcD{*t?x  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1Sz A3c  
import org.rut.util.algorithm.support.ImprovedQuickSort; :t("L-GPW  
import org.rut.util.algorithm.support.InsertSort; c64v,Hj9  
import org.rut.util.algorithm.support.MergeSort; ,'fxIO  
import org.rut.util.algorithm.support.QuickSort; )_7>nuQ6  
import org.rut.util.algorithm.support.SelectionSort; u1^wDc*xg  
import org.rut.util.algorithm.support.ShellSort; {QAv~S>4  
2 QTZwx  
/** wBSQ:f]g  
* @author treeroot [bz T& o  
* @since 2006-2-2 <|B1wa:|  
* @version 1.0 Q \hY7Xq'  
*/ s)J(/  
public class SortUtil { #qBr/+b  
public final static int INSERT = 1; nY%5cJ`"  
public final static int BUBBLE = 2; p#P~Q/;  
public final static int SELECTION = 3; $md%x mQ[  
public final static int SHELL = 4; c=O,;lWFqm  
public final static int QUICK = 5; w'Tq3-%V  
public final static int IMPROVED_QUICK = 6; &a0r%L()X  
public final static int MERGE = 7; g" VMeW^  
public final static int IMPROVED_MERGE = 8; dl-l"9~;  
public final static int HEAP = 9; b7`D|7D  
u{<"NR h  
public static void sort(int[] data) { |*5 =_vF  
sort(data, IMPROVED_QUICK); OhZgcUqQ8  
} ;,h/   
private static String[] name={ */qtzt  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~uWOdm-"[  
}; =uHnRY  
}yn0IWVa  
private static Sort[] impl=new Sort[]{ kRJ4-n^@><  
new InsertSort(), 21X`h3+=  
new BubbleSort(), Dim> 7Wbh  
new SelectionSort(), 4BL;FO  
new ShellSort(), \Q?ip&R  
new QuickSort(), rqPo)AL  
new ImprovedQuickSort(), 2F{hg%  
new MergeSort(), gV;H6"  
new ImprovedMergeSort(), e}Vw!w  
new HeapSort() /^SAC%PD  
}; !|hoYU>@2L  
LkruL_E>  
public static String toString(int algorithm){ &)wiKh"$  
return name[algorithm-1]; uA t V".  
} d[^KL;b?6  
z4%uN |V  
public static void sort(int[] data, int algorithm) { ipnV$!z  
impl[algorithm-1].sort(data); HAzBy\M{  
} 2j JmE&)7,  
s9;#!7ms  
public static interface Sort { 6 gL=u-2  
public void sort(int[] data); Rk<@?(l!6x  
} E51dV:l  
}_/Hdmmx  
public static void swap(int[] data, int i, int j) { q%n6K  
int temp = data; gN8hJG'0  
data = data[j]; $,=6[T!z+e  
data[j] = temp; SvM6iZ]  
} S_ MyoXV  
} z}QwP~Z  
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