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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` S  
插入排序: `:&{/|uP7  
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package org.rut.util.algorithm.support; ~[{| s' )  
j!l(ReGb  
import org.rut.util.algorithm.SortUtil; 5sH ee,  
/** FpEdwzBb<  
* @author treeroot G[mYx[BTz  
* @since 2006-2-2 ^AN9m]P  
* @version 1.0 Ic*Q(X  
*/ :c>,=FUT  
public class InsertSort implements SortUtil.Sort{ `^/Q"zH  
NTC,Vr\A  
/* (non-Javadoc) Z=xrj E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d@<XR~);  
*/ Wd7*sa3T  
public void sort(int[] data) { 31}6dg8?n  
int temp; 8[k-8h|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .*Z]0~ &|  
} +hfl.OBy  
} e :#\Oh  
} GM5::M]fS  
A[o Ri}=  
} y~\z_') <>  
<K43f#%  
冒泡排序: 8WvT0q>]  
{MHr]A}X\  
package org.rut.util.algorithm.support; rO C~U85  
(efH>oY[  
import org.rut.util.algorithm.SortUtil; |Qm 7x[i  
\ZC7vM"h  
/** 8WAg{lVs  
* @author treeroot )3;S;b  
* @since 2006-2-2 "m!Cl-+u  
* @version 1.0 -kJ`gdS  
*/ *ce h ]v  
public class BubbleSort implements SortUtil.Sort{ G  B15  
H*Yy o ?  
/* (non-Javadoc) ?vXy7y&4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m^wYRA.  
*/ p%}oo#%J  
public void sort(int[] data) { qLR)>$  
int temp; z2r{AQ.&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ E]68IuP@'  
if(data[j] SortUtil.swap(data,j,j-1); k?_Miqr  
} !a  /  
} km *$;Nli  
} O%)w!0  
} wL:3RZB  
lOVsp#  
} "]sr4Jg=  
mX %;  
选择排序: ]]Wa.P~]O  
f;QWlh"9  
package org.rut.util.algorithm.support; K(hqDif*6  
!?]NMf_  
import org.rut.util.algorithm.SortUtil; !.9NJ2'8  
[~x Q l  
/** GR/ p%Y(  
* @author treeroot =E{1QA0  
* @since 2006-2-2 PQ1\b-I  
* @version 1.0 Ur_~yX]Mo  
*/ MwiT1sB~  
public class SelectionSort implements SortUtil.Sort { ^"l4   
/KH3v!G0  
/* R`Q9|yF\  
* (non-Javadoc) OD{Rh(Id  
* 3rs=EMz:w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !tN]OQ)'  
*/ ;+cZS=  
public void sort(int[] data) { 8hdd1lVKO8  
int temp; mim]nRd2v  
for (int i = 0; i < data.length; i++) { L[D}pL=  
int lowIndex = i; \ 3ha  
for (int j = data.length - 1; j > i; j--) { CJ?Lv2Td  
if (data[j] < data[lowIndex]) { {=pf#E=  
lowIndex = j; Wo\NX05-?  
} aabnlOVw  
} AfyEFnY  
SortUtil.swap(data,i,lowIndex); >AJtoJ=j  
} FK0nQ{uB"  
} 5yuR[ VU  
1jO/"d.8n  
} v:eVK!O  
q8`JRmt)H  
Shell排序: ~#N^@a  
D>PB|rS@  
package org.rut.util.algorithm.support; % ?@PlQ  
XzkC ]e'  
import org.rut.util.algorithm.SortUtil; (Jy7  
zq8LQ4@ay  
/** O$<kWSC  
* @author treeroot }qRYXjS  
* @since 2006-2-2 C&D!TR!K  
* @version 1.0 skf7Si0z  
*/ /V^Gn;  
public class ShellSort implements SortUtil.Sort{ ['Hl$2 j  
YOqGFi~`  
/* (non-Javadoc) ^g"G1,[%w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QQj)"XJ29  
*/ k7'_  
public void sort(int[] data) { iG!tRNQ{y  
for(int i=data.length/2;i>2;i/=2){ q{nNWvL  
for(int j=0;j insertSort(data,j,i); :dc>\kUIv  
} c=0S]_  
} S=*rWh8)%<  
insertSort(data,0,1); An{`'U(l  
} <j+DY@*  
N`h,2!(j  
/** *VG#SK  
* @param data !?,7Cu.5#6  
* @param j L'iENZ I$  
* @param i p8aGM-+40W  
*/ ^~'tQ}]!"  
private void insertSort(int[] data, int start, int inc) { %}elh79H*  
int temp; <lopk('7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); JK) )Cuh  
} 6vAq&Y{JB'  
} j^-E,YMC  
} M_lQ^7/  
CoO..  
} ^K. d|z  
S:aAR*<6  
快速排序: @~,&E*X! .  
2.)xWCG  
package org.rut.util.algorithm.support; +i HZ*  
h8B:}_Cu  
import org.rut.util.algorithm.SortUtil; W5z<+8R  
6Lj=%&  
/** HI&N&a9C  
* @author treeroot n,/eT,48`  
* @since 2006-2-2 RdaAS{>Sk  
* @version 1.0 8S/SXyS  
*/ I8~ .Vu2  
public class QuickSort implements SortUtil.Sort{ 3>asl54  
J< Ljg<t+  
/* (non-Javadoc) s2F<H#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2MY-9(no  
*/  t~_vzG  
public void sort(int[] data) { nY y%=B|>  
quickSort(data,0,data.length-1); }9=X*'BO  
} h.T]J9;9  
private void quickSort(int[] data,int i,int j){ fz>3  
int pivotIndex=(i+j)/2; ]+4QsoFNt  
file://swap )bqSM&SO  
SortUtil.swap(data,pivotIndex,j); $[(amj-;l  
|y%pJdPk=  
int k=partition(data,i-1,j,data[j]); NSs"I]  
SortUtil.swap(data,k,j); WX~: Y,l+u  
if((k-i)>1) quickSort(data,i,k-1); t"# .I?S0  
if((j-k)>1) quickSort(data,k+1,j); ;|yd}q=p  
2-G6I92d  
} ''D\E6c\  
/** fGdT2}gd  
* @param data A$ 2AYQ  
* @param i z3Id8G&>  
* @param j 2><=U7~  
* @return n<,:;0{  
*/ mH`K~8pRg  
private int partition(int[] data, int l, int r,int pivot) { bqPaXH n  
do{ )\aCeY8o  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6&9}M Oc  
SortUtil.swap(data,l,r); ~?6M4!u   
} t@(:S6d  
while(l SortUtil.swap(data,l,r); Q H>e_  
return l; 3bsuE^,.@  
} sOVbz2 \yb  
LC>bZ!(i#  
} bT>1S2s  
,vcg%~-  
改进后的快速排序: !=)b2}e/>  
;9&#Sb/  
package org.rut.util.algorithm.support; C}'Tmi  
~7 w"$H8  
import org.rut.util.algorithm.SortUtil; b}APD))*H!  
uD=FTx  
/** C<B+!16  
* @author treeroot w. c]   
* @since 2006-2-2 ?y/LMja  
* @version 1.0 [`n)2} k  
*/ -bP_jIZF;g  
public class ImprovedQuickSort implements SortUtil.Sort { e+~Q58oD  
).$q9G  
private static int MAX_STACK_SIZE=4096; xg.o7-^M  
private static int THRESHOLD=10; 1F,>siuh ,  
/* (non-Javadoc) x{_3/4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }!_ofe  
*/ Ze.\<^-t  
public void sort(int[] data) { ,9.-A-Yw  
int[] stack=new int[MAX_STACK_SIZE]; # ? _8 *?  
]EWEW*'j  
int top=-1; dX;Q\  ]"  
int pivot; nj4G8/U-q  
int pivotIndex,l,r; !;, Dlq-}  
`^mY*Cb e  
stack[++top]=0; V;IV2HT0J"  
stack[++top]=data.length-1; FzzV%  
7#[8td  
while(top>0){ kSUpEV+/  
int j=stack[top--]; /^\UB fE  
int i=stack[top--]; L ]Y6/Q   
T$IwrTF@?  
pivotIndex=(i+j)/2; ,!>1A;~wT  
pivot=data[pivotIndex]; 7^FJ+gN8b  
3/s" ;Kg,  
SortUtil.swap(data,pivotIndex,j); n6C]JWG\/U  
SCL8.%z D  
file://partition lS96sjJp@  
l=i-1; z@Uf@~+U  
r=j; x_oiPu.V  
do{ 6d{&1-@>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,SG-{   
SortUtil.swap(data,l,r); $d\>^Q  
} rE?Fp  
while(l SortUtil.swap(data,l,r); )aAKxC7w  
SortUtil.swap(data,l,j); Ka/*Z4"  
0K'^g0G  
if((l-i)>THRESHOLD){ sL!+&Id|  
stack[++top]=i;  Op5S'  
stack[++top]=l-1; BN%;AQV  
} k1E(SXcW9  
if((j-l)>THRESHOLD){ C )J@`E  
stack[++top]=l+1; G7N Rpr  
stack[++top]=j; _ K Ix7  
} +rFAo00E|  
\(`8ng]vs  
} >_|$7m.?n[  
file://new InsertSort().sort(data); <44A*ux  
insertSort(data); I%M"I0FV  
} #p7K2  
/** "ph<V,lg  
* @param data ~A@HW!*Z@  
*/ \'CA:9V}  
private void insertSort(int[] data) { FH)_L1n  
int temp; TD-o-*mO  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u"gtv  
} Ox%p"xuP,  
} YR-Ge  
} EE5mVC&  
h.jO3q  
}  `6xr:s  
X'J!.Jj  
归并排序: VRB!u420  
VT [TE  
package org.rut.util.algorithm.support; ?/q\S  
CB^.N>'  
import org.rut.util.algorithm.SortUtil; Tfp^h~&u  
x@3" SiC  
/** 5tl( $j  
* @author treeroot B}+li1k  
* @since 2006-2-2 n7/>+V+  
* @version 1.0 L*FQ`:lZ  
*/ TW6F9}'f&  
public class MergeSort implements SortUtil.Sort{ M(?0c}z  
I8f='  
/* (non-Javadoc) Xp[xO0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]j0/.pG  
*/ 2b K1.BD  
public void sort(int[] data) { 0.[tEnLZ  
int[] temp=new int[data.length]; )&j@={0  
mergeSort(data,temp,0,data.length-1); Y_<-.?jf  
} d:pGdr& .  
{zalfw{+  
private void mergeSort(int[] data,int[] temp,int l,int r){ GfV#^qi  
int mid=(l+r)/2; e'MW"uCP}  
if(l==r) return ; e2yCWolmTS  
mergeSort(data,temp,l,mid); m*.+9 6  
mergeSort(data,temp,mid+1,r); saTS8p z  
for(int i=l;i<=r;i++){  ejc>  
temp=data; xp}M5|   
} 24u_}ZQzY  
int i1=l; NFyKTA6  
int i2=mid+1; Xe&p.v  
for(int cur=l;cur<=r;cur++){ L1Jn@  
if(i1==mid+1) ~jzjJ&O&  
data[cur]=temp[i2++]; 5z&>NI  
else if(i2>r) >a&IFi,j  
data[cur]=temp[i1++]; )-X/"d  
else if(temp[i1] data[cur]=temp[i1++]; /0o#V-E)  
else adPd}rt;  
data[cur]=temp[i2++]; &M:o(T  
} Y]tbwOle  
} e/&^~ $h  
_+X-D9j(l  
} Y?3f Fg  
m VFo2^%v  
改进后的归并排序: v-BQ>-&s  
 md,KRE  
package org.rut.util.algorithm.support; d^f rKPB  
_M+7)[xj=  
import org.rut.util.algorithm.SortUtil; Gt+rVJ=v  
S9{A}+"K  
/** ]6F\a= J  
* @author treeroot P) cEYk  
* @since 2006-2-2 )xiu \rC  
* @version 1.0 `ZbFky{  
*/ G:3szz  
public class ImprovedMergeSort implements SortUtil.Sort { RD46@Q`  
91]sO%3  
private static final int THRESHOLD = 10; >ZW|wpO  
|B^Mj57DO  
/* [(gXjt-  
* (non-Javadoc) 0zE@?.  
* Bhv$   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~d].<Be  
*/ lj UdsUw  
public void sort(int[] data) { tJybR"NQ  
int[] temp=new int[data.length]; %~y>9K  
mergeSort(data,temp,0,data.length-1); v+I-*,R  
} yYaoA/0  
Mc <u?H  
private void mergeSort(int[] data, int[] temp, int l, int r) { {}$Zff   
int i, j, k; .r2*tB).  
int mid = (l + r) / 2; 6JDaZh"=K  
if (l == r) (0B?OkQ  
return; yIrJaS-  
if ((mid - l) >= THRESHOLD) IvT><8<G  
mergeSort(data, temp, l, mid); 6pSi-FH  
else #c5jCy}n  
insertSort(data, l, mid - l + 1); B6Eu."T  
if ((r - mid) > THRESHOLD) p[(I5p: L  
mergeSort(data, temp, mid + 1, r); OQ7 `n<I<)  
else pF4Z4?W  
insertSort(data, mid + 1, r - mid); d&[RfZ`  
D:;idUO  
for (i = l; i <= mid; i++) { Rd&DH_<+^  
temp = data; * <\K-NSL  
} s4~[GO6>  
for (j = 1; j <= r - mid; j++) { 'gvR?[!t  
temp[r - j + 1] = data[j + mid]; 3iIy_nWC  
} C+ll A  
int a = temp[l]; XzHR^^;u"*  
int b = temp[r]; =29IHL3  
for (i = l, j = r, k = l; k <= r; k++) { 8 {V9)U  
if (a < b) { Y.\x.Hg  
data[k] = temp[i++]; ;~EQS.Qp  
a = temp; PDuc;RG  
} else { )63 $,y-;$  
data[k] = temp[j--]; %'yrIR  
b = temp[j]; d=PX}o^  
} !g9k9 l  
} p 1'l D  
} R7kkth  
0RT8N=B83  
/**  ch8a  
* @param data z* EV>Y[  
* @param l ~w+I2oS$  
* @param i Q$c6l[(g  
*/ -2M~KlYl  
private void insertSort(int[] data, int start, int len) { ( Jk& U8y  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @kWL "yy,  
} ?vFy3  
} #wI}93E  
} WVdV:vJ-  
} "XR=P> xk  
u^~7[OkE  
堆排序: OG/b5U  
QQM:[1;RT  
package org.rut.util.algorithm.support; q 84*5-  
1f`De`zXzr  
import org.rut.util.algorithm.SortUtil; 9 {&g.+  
jYHnJ}<  
/** *an Ng<@  
* @author treeroot H<(F$7Q!\  
* @since 2006-2-2 cb|+6m~  
* @version 1.0 {A/r)  
*/ ; oyV8P$  
public class HeapSort implements SortUtil.Sort{ hOY@vm&  
b=,B Le\  
/* (non-Javadoc) Alxf;[s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ]n!V  
*/ IZ=Z=k{  
public void sort(int[] data) { ppyy0E^M  
MaxHeap h=new MaxHeap(); i]v3CY|3AI  
h.init(data); c/|{yp$Ga>  
for(int i=0;i h.remove(); x>yqEdR=o  
System.arraycopy(h.queue,1,data,0,data.length); oY)eN?c  
} n<.7tr0f\  
Q@VA@N=w  
private static class MaxHeap{  b`jR("U  
)|~&(+Q?]  
void init(int[] data){ B\J[O5},  
this.queue=new int[data.length+1]; A{ +/$7vek  
for(int i=0;i queue[++size]=data; J,=K1>8s  
fixUp(size); /Q1 b%C  
} \p4*Q}t  
} X+4Uh I  
C4mkt2Eb0a  
private int size=0; SZWNN#w60?  
q"VmuQ  
private int[] queue; 9q`Ewj R  
7{#p'.nc5  
public int get() { Hn/t'D3  
return queue[1]; >z<L60S  
} ug9Ja)1|  
F*k =JL  
public void remove() { 1)z'-dQ-5$  
SortUtil.swap(queue,1,size--); 56pj(}eq  
fixDown(1); PaTOlHr  
} (JbRhcg  
file://fixdown 6s@!Yn|?  
private void fixDown(int k) { )z7CT|h7S  
int j; 7!M; ?Y  
while ((j = k << 1) <= size) { O60T.MM`  
if (j < size %26amp;%26amp; queue[j] j++; *d8 %FQ  
if (queue[k]>queue[j]) file://不用交换 02]HwsvZ  
break; D[>:az `  
SortUtil.swap(queue,j,k); L'wR$  
k = j; ui?@:=  
} ) gl{ x  
} ,LBj$U]e|E  
private void fixUp(int k) { w"v96%"Y  
while (k > 1) { /[/L%;a'p  
int j = k >> 1; "-:H$  
if (queue[j]>queue[k]) K"l~bFCZ8  
break; PcsYy]Q/  
SortUtil.swap(queue,j,k); -o/Vp>_UOE  
k = j; v} !lx)#  
} %qV:h#  
} myo4`oH  
@kSfF[4H  
} 2z;nPup,  
i6bUJtL  
} -']Idn6  
EuHQp7  
SortUtil: %0&,_jM/9  
_E9[4%f  
package org.rut.util.algorithm; z&9ljQ iF  
~JRq :  
import org.rut.util.algorithm.support.BubbleSort; Wt%Wpb8  
import org.rut.util.algorithm.support.HeapSort; rX^uHq8  
import org.rut.util.algorithm.support.ImprovedMergeSort; I*3 >>VN  
import org.rut.util.algorithm.support.ImprovedQuickSort; *lDVV,T'}w  
import org.rut.util.algorithm.support.InsertSort; GN(,`y  
import org.rut.util.algorithm.support.MergeSort; P:Q&lnC  
import org.rut.util.algorithm.support.QuickSort; hc W>R  
import org.rut.util.algorithm.support.SelectionSort; 9<&*iIrM  
import org.rut.util.algorithm.support.ShellSort; ~APS_iG[  
_k}Qe ;  
/** |Fx *,91  
* @author treeroot # a4OtRiI  
* @since 2006-2-2 n"?*"Ya  
* @version 1.0 a?ete9Q+  
*/ %V1jM  
public class SortUtil { +b_[JP2  
public final static int INSERT = 1; o]I8Ghk>/z  
public final static int BUBBLE = 2; NVQ.;"2w  
public final static int SELECTION = 3; Fsl="RB7f  
public final static int SHELL = 4; %$Fe[#1  
public final static int QUICK = 5; ES^J RX  
public final static int IMPROVED_QUICK = 6; K/(QR_@?  
public final static int MERGE = 7; "([gN:   
public final static int IMPROVED_MERGE = 8; Xn~\Vb  
public final static int HEAP = 9; 8 mOGEx  
gKQs:25  
public static void sort(int[] data) { GwA\>qXw  
sort(data, IMPROVED_QUICK); ?x 0gI   
} [CI0N I6F  
private static String[] name={ Ttl m&d+C  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l['p^-I  
}; mcidA%  
@ G!Ir"Q  
private static Sort[] impl=new Sort[]{ { 2Ew^Li  
new InsertSort(), |Y6;8e`H  
new BubbleSort(), ue?3;BF 5  
new SelectionSort(), `<P:l y.  
new ShellSort(), qnQ".  
new QuickSort(), __+8wC  
new ImprovedQuickSort(), L%3Bp/`S  
new MergeSort(), G$KQgUN~[  
new ImprovedMergeSort(), Xf"< >M  
new HeapSort() +*`kJ)uP  
}; ~xDu2 -5  
j[mII5e7g  
public static String toString(int algorithm){ Gj%q:[r  
return name[algorithm-1]; Qc!3y>Y=_  
} h-O;5.m-P  
Q`.q,T8I  
public static void sort(int[] data, int algorithm) { T~L V\}h  
impl[algorithm-1].sort(data); zN;P_@U  
} Zv@ Fr9m  
NX8hFwR  
public static interface Sort { N(yd<M w  
public void sort(int[] data); ZNDi;6e  
} 5}_=q;sZ  
<}'=@a  
public static void swap(int[] data, int i, int j) { :x5O1Zn/t  
int temp = data; f[R~oc5P0  
data = data[j]; A n`*![  
data[j] = temp; Qm*ZOz'i  
} d-m.aP)y:  
} ]91QZ~4a  
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