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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。 _SW3_8SuM.  
插入排序: !*R qCS,  
M5gWD==uP  
package org.rut.util.algorithm.support; -f*P nxg  
7}M2bH} \K  
import org.rut.util.algorithm.SortUtil; O T.*pk+<)  
/** X}+>!%W!}  
* @author treeroot QQWadVQo  
* @since 2006-2-2 a~'a  
* @version 1.0 jv&*uYm  
*/ lOtDqb&  
public class InsertSort implements SortUtil.Sort{ 0lhVqy}:}o  
0c}  }Q  
/* (non-Javadoc) yKO`rtP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +$g}4  
*/ <HbcNE~  
public void sort(int[] data) { ``wSc0\  
int temp; s"t$0cH9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,l<6GB2\  
} 'Lu__NfN  
} '7XIhN9  
} z`:lcF{V  
0`^&9nR  
} |JQQU! x  
293M\5:  
冒泡排序: H1} RWaJ  
#O+),,WS  
package org.rut.util.algorithm.support; )c `7( nY  
C=eF.FB;'  
import org.rut.util.algorithm.SortUtil; yu;P +G  
?Y@N`S  
/** dq]0X?[6  
* @author treeroot rzt Ru  
* @since 2006-2-2 iyg*Xbmi~.  
* @version 1.0 %}%Qc6.H  
*/ Z]B~{!W1  
public class BubbleSort implements SortUtil.Sort{ @nux9MX<9  
v%q0OX>9X"  
/* (non-Javadoc) <yd{tD$A*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _H5o'>=  
*/ HSc~*Q  
public void sort(int[] data) { 1fpQLaT  
int temp; %44leINx  
for(int i=0;i for(int j=data.length-1;j>i;j--){ DAXX;4  
if(data[j] SortUtil.swap(data,j,j-1); e J6$-r  
} =>_\fNy  
} 'Iw NTM  
} u fw]=h)  
} 9Gnc9_]I;W  
\SB c;  
} b:TLV`>/&  
N<XNTf  
选择排序: E"5*Ei)^3  
MRdduPrM%$  
package org.rut.util.algorithm.support; ,%M$0poKM  
NfjE`  
import org.rut.util.algorithm.SortUtil; K~R`%r_  
z*a:L}$  
/** / G7vwC  
* @author treeroot B!?%O  
* @since 2006-2-2 d>mo~  
* @version 1.0 *-8&[D0  
*/ Sy0$z39  
public class SelectionSort implements SortUtil.Sort { R}!:'^  
d'NIV9P`j]  
/* UWd=!h^dt  
* (non-Javadoc) ,^\2P$rT  
* Jcrw#l8|C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bcE._9@@  
*/ PamO8^!G  
public void sort(int[] data) { 67Th;h*sh  
int temp; OWg(#pZk  
for (int i = 0; i < data.length; i++) { u)+8S/ )  
int lowIndex = i; E? ; 0)'h  
for (int j = data.length - 1; j > i; j--) { uFinv2Z '  
if (data[j] < data[lowIndex]) { |R/%D%_g  
lowIndex = j; xD~5UER  
} H _zo1AW  
} ! t?iXZ  
SortUtil.swap(data,i,lowIndex); :% ,:"  
} #ML%ij 1  
} ]H+8rY%+  
,)Znb=  
} 4\8+9b\9"  
1cpiHZa  
Shell排序: fof TP1  
 +|n*b  
package org.rut.util.algorithm.support; Bf~vA4  
i#vYyVr[  
import org.rut.util.algorithm.SortUtil; gc-@"wI?  
G}b]w~ML ~  
/** #Y a4ps_  
* @author treeroot CVL3VT1j0  
* @since 2006-2-2 T[UN@^DP(  
* @version 1.0 -"' j7t:  
*/ F%@aB<Nu  
public class ShellSort implements SortUtil.Sort{ BBwy,\o#  
 3KlbP  
/* (non-Javadoc) Whm,F^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) l:[^$=,  
*/ 5m&9"T.w  
public void sort(int[] data) { 4.[^\N  
for(int i=data.length/2;i>2;i/=2){ 0"  
for(int j=0;j insertSort(data,j,i); jCOIuw  
} >UiYL}'br6  
} 7&jTtKLj  
insertSort(data,0,1); jFL #s&ft  
} P}n_IV*@  
,Z&xNBX  
/** -#u=\8  
* @param data %)zodf  
* @param j r*2+xDoEi  
* @param i Ug>~Rq]  
*/ `ZYoA t]C~  
private void insertSort(int[] data, int start, int inc) { ;g+N&)n  
int temp; [+T.a t  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); saBVgSd  
} ]%@M>?Ywc  
} 4i)1'{e  
} fg_4zUGM+g  
.,<1%-R34q  
} J\twZ>w~0  
^c"jH'#.L  
快速排序: '3 /4?wi  
O_oPh] x)  
package org.rut.util.algorithm.support; "l3_=Gua  
H1|?t+oP  
import org.rut.util.algorithm.SortUtil; N{9v1`B  
gc_:%ki  
/** Gp?a(-K5  
* @author treeroot [B\h$IcRv  
* @since 2006-2-2 o=1Uh,S3R  
* @version 1.0 B+P(M!m3  
*/ V_ :1EBzz  
public class QuickSort implements SortUtil.Sort{ J=9FRC  
P{kur} T  
/* (non-Javadoc) /M1ob:m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j4gF;-m<  
*/ N.,X<G.H  
public void sort(int[] data) { `i3NG1 v0  
quickSort(data,0,data.length-1); t3 8m'J :>  
} BO~ 0ON0  
private void quickSort(int[] data,int i,int j){ I&#| w"/"U  
int pivotIndex=(i+j)/2; x nsLf?>]  
file://swap S 6@u@C  
SortUtil.swap(data,pivotIndex,j); 4KhV|#-;k  
_mqL8ho  
int k=partition(data,i-1,j,data[j]); )B"jF>9)[  
SortUtil.swap(data,k,j); ]sf7{lVT  
if((k-i)>1) quickSort(data,i,k-1); cLpYW7vZ[  
if((j-k)>1) quickSort(data,k+1,j); ~7*.6YnI  
|mxDjgq  
} !JHL\M>A5  
/** 3 oF45`3FV  
* @param data BTqS'NuT  
* @param i ! `   
* @param j _C%3h5  
* @return Ta ZmRL  
*/ !"?#6-,Xn  
private int partition(int[] data, int l, int r,int pivot) { j/323Za+  
do{ eBZXI)pPh  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .F98G/s  
SortUtil.swap(data,l,r); TV)h`\|Z*  
} M'7f O3&|  
while(l SortUtil.swap(data,l,r); M8MR oA6F  
return l; 7OcW C-<  
} q<xCb%#Jl  
orzZ{87  
} >,V9H$n  
x|/|jzJSX  
改进后的快速排序: ?A K(|  
=MQoC:l  
package org.rut.util.algorithm.support; a#cCpE  
%P;lv*v.  
import org.rut.util.algorithm.SortUtil; 7Haa;2 T'  
F&4rO\aC"/  
/** >:74%D0UF  
* @author treeroot [owWiN4`s  
* @since 2006-2-2 g!g#]9j  
* @version 1.0 jD$,.AVvz  
*/ |^&b8  
public class ImprovedQuickSort implements SortUtil.Sort { ?&8^&brwG  
],@rS9K  
private static int MAX_STACK_SIZE=4096; C)[,4wt,  
private static int THRESHOLD=10; xgwY@'GN  
/* (non-Javadoc) b1(T4w6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (yH'{6g\  
*/ [^WC lRF  
public void sort(int[] data) { Fco`^kql.D  
int[] stack=new int[MAX_STACK_SIZE]; %f&/E"M  
K0u|U`   
int top=-1; ,;EIh}  
int pivot;  :|>h7v  
int pivotIndex,l,r; v,FU^f-'  
0M_ DB=  
stack[++top]=0; 3 ]5^r}  
stack[++top]=data.length-1; #3i3G(mQ  
29;?I3< *  
while(top>0){ G?L HmTHg  
int j=stack[top--]; q$0*b]=E  
int i=stack[top--]; .p<:II:6  
nD_GL  
pivotIndex=(i+j)/2; |U:k,YH  
pivot=data[pivotIndex]; @x*c1%wg  
L7n D|  
SortUtil.swap(data,pivotIndex,j); KoOz#,()  
rMdt:`  
file://partition vLv@&lMW  
l=i-1; kjTduZ/3 "  
r=j; u0JB\)(-/h  
do{ UFXaEl}R   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); QmQ=q7  
SortUtil.swap(data,l,r); %6|nb:Oa  
} iFd+2S%  
while(l SortUtil.swap(data,l,r); TJ10s%,V  
SortUtil.swap(data,l,j); H`*LBqDk  
EEEh~6?-e  
if((l-i)>THRESHOLD){ M1k{t%M+S  
stack[++top]=i; Kr?TxhUHd  
stack[++top]=l-1; U\g/2dM  
} F6|TP.VY_.  
if((j-l)>THRESHOLD){ 7o7)0l9!  
stack[++top]=l+1; ew>XrT=Zm  
stack[++top]=j; ()Y~Q(5ji  
} UE8kpa)cQ  
vk}n,ecl  
} G"r1+#  
file://new InsertSort().sort(data); ahJ`T*)HY  
insertSort(data); J9\Cm!H  
} 2] z 8: a  
/** prWk2_D;*  
* @param data K?6jXJseb  
*/ qrb[-|ie&  
private void insertSort(int[] data) { !]"@kl%  
int temp; )MtF23k)g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w^\52  
} T`9lV2x*P  
} .N,bIQnj  
} 57'*w]4f  
W/=.@JjI  
} G4Q[Th  
:">!r.Q  
归并排序: Uf1!qP/H?  
T(#J_Y  
package org.rut.util.algorithm.support; R}-(cc%5  
4zXFuTr($  
import org.rut.util.algorithm.SortUtil; d?y4GkK  
/fKx} }g)  
/** 5[8xV%>;  
* @author treeroot &xU[E!2H%  
* @since 2006-2-2 `"Jj1O@  
* @version 1.0 S-a]j;U  
*/ `68@+|#  
public class MergeSort implements SortUtil.Sort{ .u)X3..J  
2bv=N4ly  
/* (non-Javadoc) x!?u^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f&=AA@jLv  
*/ nXaC 3W:"  
public void sort(int[] data) { +vw\y  
int[] temp=new int[data.length]; qFicBpB  
mergeSort(data,temp,0,data.length-1); G'nmllB`]  
} j%Y#(Q>  
1rNzJ;'  
private void mergeSort(int[] data,int[] temp,int l,int r){ =T3 <gGM  
int mid=(l+r)/2; |.(dq^  
if(l==r) return ; g!FuY/%+  
mergeSort(data,temp,l,mid); [T|aw1SoN  
mergeSort(data,temp,mid+1,r); t=BUN  
for(int i=l;i<=r;i++){ N+9VYH"*  
temp=data; !eGC6o}f  
} E:,/!9n  
int i1=l; sv2A-Dld  
int i2=mid+1; Q1T$k$n  
for(int cur=l;cur<=r;cur++){ IDad9 Bx  
if(i1==mid+1) kVuUjP6(c  
data[cur]=temp[i2++]; fJ=0HNmX  
else if(i2>r) sSr&:BOsi  
data[cur]=temp[i1++]; 5us:adm[pD  
else if(temp[i1] data[cur]=temp[i1++]; Z|&MKG24  
else ^3G{|JB!+  
data[cur]=temp[i2++]; kYM~d07 V  
} ^\hG"5#  
} \q>bs|2  
F6LH $C  
} -zCH**y%1  
l z/8  
改进后的归并排序: =h-U  
aE Bu *`-j  
package org.rut.util.algorithm.support; DMAIM|h  
T"(&b~m2b4  
import org.rut.util.algorithm.SortUtil; _no/F2>!/n  
hnffz95  
/** TCMCK_SQL  
* @author treeroot +Te\H  
* @since 2006-2-2 I!ED?n  
* @version 1.0 <!&[4-;fU  
*/ HNb/-e ,"  
public class ImprovedMergeSort implements SortUtil.Sort { ud63f` W]4  
JL`-0P<M  
private static final int THRESHOLD = 10; z$&{:\hj  
~jWn4 \  
/* @CNi{. RX  
* (non-Javadoc) #{6{TFx\  
* l?\jB\,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rbul8(1h  
*/ Z@yW bjE7Z  
public void sort(int[] data) { ]dF ,:8  
int[] temp=new int[data.length]; 9G9t" {  
mergeSort(data,temp,0,data.length-1); ?L x24*5%  
}  |{&{  
d}OTO10  
private void mergeSort(int[] data, int[] temp, int l, int r) { gLb`pCo/  
int i, j, k; 2ElJbN#  
int mid = (l + r) / 2; UI0( =>L  
if (l == r) ;RH;OE,A  
return; a`wc\T^  
if ((mid - l) >= THRESHOLD) FW;m\vu  
mergeSort(data, temp, l, mid); Z EQ@IS:Y  
else W1WYej"  
insertSort(data, l, mid - l + 1); 4%{,] q\p  
if ((r - mid) > THRESHOLD) zp6C3RG(  
mergeSort(data, temp, mid + 1, r); S\^P ha q  
else 32(^Te]:  
insertSort(data, mid + 1, r - mid); oF vfCrd  
]v?@g:i E  
for (i = l; i <= mid; i++) { #./fY;:cj  
temp = data; -Sq z5lo  
} $&Gu)4'+  
for (j = 1; j <= r - mid; j++) { ?(xnSW@r  
temp[r - j + 1] = data[j + mid]; LY+@o<>  
} C2.HMgL  
int a = temp[l]; .7O*pJ2(H  
int b = temp[r]; 0q^>ZF-@  
for (i = l, j = r, k = l; k <= r; k++) { Zj_b>O-V  
if (a < b) { # '=a=8-$  
data[k] = temp[i++]; jY  &k  
a = temp; uY0lR:|  
} else { T!uM+6|Y  
data[k] = temp[j--]; Lk|hQ  
b = temp[j]; !zBhbmlKt  
} =WyDp97@+  
} {0r0\D>bw  
} V[mT<Lc  
2v:]tj  
/** P i=+/}  
* @param data ;$HftG>B  
* @param l x-XD.qh7Hr  
* @param i Z~GL5]S  
*/ -7SAK1c$  
private void insertSort(int[] data, int start, int len) { 1eA7>$w}[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); RXNn[A4xfY  
} fAF1"4f  
} S2E8G q9  
} GeI-\F7b  
} Cwr~HY  
_ "E$v&_  
堆排序: {M3qLf~z#C  
K~uXO  
package org.rut.util.algorithm.support; !H#bJTXB  
e4-@ f%5  
import org.rut.util.algorithm.SortUtil; r`$OO,W  
ht|z<XJ  
/** T=<@]$?  
* @author treeroot '-QwssE  
* @since 2006-2-2 02Y]`CXj  
* @version 1.0 M\vwI"  
*/ Cmu@4j&  
public class HeapSort implements SortUtil.Sort{ iky|Tp  
w?3p';C  
/* (non-Javadoc) PYiU_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) md=TjMaY  
*/ JELT ou  
public void sort(int[] data) { \$R_YKGf1G  
MaxHeap h=new MaxHeap(); {]*c29b>  
h.init(data); o\BOL3H  
for(int i=0;i h.remove(); LI'6R=  
System.arraycopy(h.queue,1,data,0,data.length); :v0U|\j8/V  
} 16w|O |^<  
,k.3|aZE  
private static class MaxHeap{ B{/R: Hm  
R$v[!A+:'  
void init(int[] data){ >~#yu&*D  
this.queue=new int[data.length+1]; B`YTl~4  
for(int i=0;i queue[++size]=data; LU \i0|i|  
fixUp(size); #r$cyV!k  
} ks&*O!h  
} Ki4r<>\l{H  
F7A=GF'  
private int size=0; )(A]Ln4  
q6@Lp^f  
private int[] queue; $:BKzHmg  
l~1Oef#y  
public int get() { &]g}u5J!=  
return queue[1]; m];]7uB5=  
} ,ly\Ka?zO  
=FlDb 5t{  
public void remove() { Z|%_&M  
SortUtil.swap(queue,1,size--); r~E=4oB7  
fixDown(1); XywE1}3  
} #[,IsEpDO1  
file://fixdown %]F d[pzF  
private void fixDown(int k) { 1=r#d-\tR  
int j; 4Fa~Aog  
while ((j = k << 1) <= size) { "C }b%aO:  
if (j < size %26amp;%26amp; queue[j] j++; Hek*R?M|  
if (queue[k]>queue[j]) file://不用交换 UXeN8  
break; ;"KJ7p  
SortUtil.swap(queue,j,k); mkMq  
k = j; yu;+o3WlK  
} WeJl4wF  
} ` w=>I  
private void fixUp(int k) { cT<1V!L4  
while (k > 1) { %huRsQ %}  
int j = k >> 1; +Um( h-;  
if (queue[j]>queue[k]) WgR).Yx  
break; ,f<?;z  
SortUtil.swap(queue,j,k); vmi+_]   
k = j; DD7h^-x  
} $g@=Z"  
} xRJ\E }/7  
M.Y~1c4f  
} S\LkL]qx  
*Tas`WA  
} yGI;ye'U  
#~#R-   
SortUtil: ~F7 -HaQJ  
uYn_? G  
package org.rut.util.algorithm; ;ZH3{  
U [*FCD!~  
import org.rut.util.algorithm.support.BubbleSort; qT ,Te  
import org.rut.util.algorithm.support.HeapSort; fg s!v7  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5"^en# ?9  
import org.rut.util.algorithm.support.ImprovedQuickSort; : imW\@u  
import org.rut.util.algorithm.support.InsertSort; ?QsQnQ  
import org.rut.util.algorithm.support.MergeSort; 'GB. UKlR  
import org.rut.util.algorithm.support.QuickSort; YbR!+ 0\g  
import org.rut.util.algorithm.support.SelectionSort; +lm{Olm'^  
import org.rut.util.algorithm.support.ShellSort; Fa?~0H/DL  
 RwKdxK+;  
/** Mc=$/ o  
* @author treeroot OJ,`  
* @since 2006-2-2 uPhK3nCGo  
* @version 1.0 34z"Pm  
*/ io _1Y]N  
public class SortUtil { -!q :p&c  
public final static int INSERT = 1; x8wD0D  
public final static int BUBBLE = 2; GU4'&#  
public final static int SELECTION = 3; ~s% Md  
public final static int SHELL = 4; q_TR q:&.  
public final static int QUICK = 5; MTsM]o  
public final static int IMPROVED_QUICK = 6; ?: N @!jeJ  
public final static int MERGE = 7; Hx#;Z  
public final static int IMPROVED_MERGE = 8; ahuGq'  
public final static int HEAP = 9; ?/BqD;{?I  
wr5AG<%(  
public static void sort(int[] data) { +s(HOq)b  
sort(data, IMPROVED_QUICK); &]8P1{  
} 4 K!JQ|9  
private static String[] name={ r) HHwh{9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !LggIk1  
}; 'L 8n-TyL  
}&/o'w2wY  
private static Sort[] impl=new Sort[]{ qo p^;~  
new InsertSort(), B$- R-S6  
new BubbleSort(), &7<TAo;O  
new SelectionSort(), `JOOnTenQ  
new ShellSort(), yXz*5W_0D  
new QuickSort(), P=7zs;k  
new ImprovedQuickSort(), ^.KwcXr  
new MergeSort(), ?>hPO73{  
new ImprovedMergeSort(), ~kShq%  
new HeapSort() "*m_> IU  
}; uZM{BgXXD  
3 N.~mR  
public static String toString(int algorithm){ F=`AY^u0  
return name[algorithm-1]; /h+8A' ,  
} s1=X>'q  
:QpuO1Gu  
public static void sort(int[] data, int algorithm) { [ p{#XwN  
impl[algorithm-1].sort(data); s8wmCzB~  
} 61. Brp.eP  
J!0DR4=Xi  
public static interface Sort { xgbJ2Mh  
public void sort(int[] data); ^=T$&gD  
} g,}_G3[j0m  
^oVs+vC  
public static void swap(int[] data, int i, int j) { |s"nM<ZNZ  
int temp = data; Nd`%5%'::  
data = data[j]; !;0U,!WI  
data[j] = temp; EKA#|^Q:NX  
} cVubb}ou  
} ,u!*2cWN  
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