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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。 q44vI  
插入排序: <)pPq+  
pP#D*hiP-g  
package org.rut.util.algorithm.support; dDSb1TM  
}.(DQwC}1k  
import org.rut.util.algorithm.SortUtil; MQDLC7Y.p5  
/** q{Gh5zg5O  
* @author treeroot EXF]y}n  
* @since 2006-2-2 \03<dUA6  
* @version 1.0 0i"2s}^+_  
*/ & kVa*O  
public class InsertSort implements SortUtil.Sort{ G)^/#d#&  
!vSq?!y6*P  
/* (non-Javadoc) nGwon8&]]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Jf</uP_  
*/ C~ A`h=A<  
public void sort(int[] data) { #'},/Lm@  
int temp; *DvX|| `&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r*8a!jm?  
} Pwj|]0Y@  
} #?+[|RS|  
} N34-z|"q  
[3sZ=)G  
} Yyar{$he  
`k*;%}X\  
冒泡排序: x_I*6?  
[E%g3>/mt  
package org.rut.util.algorithm.support; r7].48D  
)t3`O$J  
import org.rut.util.algorithm.SortUtil; mn=b&{')e  
Aqmw#X  
/** qBcbMa9m  
* @author treeroot [3qH? 2&  
* @since 2006-2-2 y$bY 8L  
* @version 1.0 pZK 1G  
*/ D vvi)/<  
public class BubbleSort implements SortUtil.Sort{ bM5V=b_H  
CbW[_\  
/* (non-Javadoc) qy.$5-e:[9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i].E1},%  
*/ L C##em=Y  
public void sort(int[] data) { ,52Lm=n  
int temp; RM,aG}6M)M  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ` L 1+j  
if(data[j] SortUtil.swap(data,j,j-1); $Zo|t a^  
} ;]0d{  
} pnE]B0e  
} =H8FV09x}  
} N%>h>HJ  
t_xK?``  
} M*qE)dZjS  
n*ShYsc  
选择排序: DZ\ '7%c  
wu eDedz\  
package org.rut.util.algorithm.support; n{<}<SVY  
y\uBVa<B  
import org.rut.util.algorithm.SortUtil;  K> 4w  
+ctU7 rVy  
/** ) 3"!Q+  
* @author treeroot XEbVsw  
* @since 2006-2-2 0,)2\`99#k  
* @version 1.0 VD@$y^!H  
*/ <uS/8MP{  
public class SelectionSort implements SortUtil.Sort { 3Mm_xYDud  
0SWqC@AR%  
/* G/FDD{y  
* (non-Javadoc) uq-`1m }  
* CJCxL\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WkE="E}  
*/ Li|~%E1  
public void sort(int[] data) { Zzg zeT+bv  
int temp; {DKZ ~  
for (int i = 0; i < data.length; i++) { )-1e} VF(U  
int lowIndex = i; YLTg(*  
for (int j = data.length - 1; j > i; j--) { n.a2%,|v  
if (data[j] < data[lowIndex]) { H"^9g3 U  
lowIndex = j; f OR9N/  
} u&c%L0)E&  
} -6I*k |%8T  
SortUtil.swap(data,i,lowIndex); EV Z1Z  
} `pCy:J?d>l  
} LTzdg >\oJ  
@v@F%JCZ  
} _eq$C=3Ta  
#BcUE?K*N  
Shell排序: 41d+z>a]  
<z2.A/L  
package org.rut.util.algorithm.support; 6'N_bNW  
 QtG6v<A  
import org.rut.util.algorithm.SortUtil; ps:`rVQ7  
13Z,;YW  
/** _*?qOmf=  
* @author treeroot O9d"Z$~n=j  
* @since 2006-2-2 <`=Kt[_BQ  
* @version 1.0 VVAcbAGJ  
*/ HBvyX`-  
public class ShellSort implements SortUtil.Sort{ =v::N\&  
.TdFI"Yn  
/* (non-Javadoc) ezL1,GT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &dWGa+e  
*/ ttJ'6lGXh  
public void sort(int[] data) { Z ]  G#:  
for(int i=data.length/2;i>2;i/=2){ - A@<zqu  
for(int j=0;j insertSort(data,j,i); GVlT+Rs7  
} :Ch XzZ  
} a}f /<-L  
insertSort(data,0,1); 7?uDh'utt  
} ]g;+7  
b(R.&X  
/** % JiF269  
* @param data Or?c21un  
* @param j QgYt(/S  
* @param i \db=]L=|  
*/ 1 ; <Vr<.  
private void insertSort(int[] data, int start, int inc) { Rrry;Hr  
int temp; -(WRhBpw  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :;hg :Q:  
} !idVF!xG  
} D=3Z] 'A  
} y0T#Qq  
tCO?<QBE  
} BH~zeJ*Pr  
z a_0-G%C2  
快速排序: UcB&p t&  
Qb)c>r  
package org.rut.util.algorithm.support; gfIS  
l1<=3+d  
import org.rut.util.algorithm.SortUtil; Hik=(pTu>  
4[kyzz x  
/** 4OJD_  
* @author treeroot @73kry v  
* @since 2006-2-2 `p* 43nV  
* @version 1.0 cH5  
*/ MS#*3Md&y  
public class QuickSort implements SortUtil.Sort{ O>nMeU  
WFk%nO/  
/* (non-Javadoc) 4\|Q;@f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b3[!1i  
*/ F Xr\  
public void sort(int[] data) { T!9AEG  
quickSort(data,0,data.length-1); "HqmS  
} F|m &n&  
private void quickSort(int[] data,int i,int j){ 73'AQ")UJ  
int pivotIndex=(i+j)/2; M1NdlAAf  
file://swap ^;s/4  
SortUtil.swap(data,pivotIndex,j); j8 2w 3  
_fY9u2Y  
int k=partition(data,i-1,j,data[j]); y*sVimx  
SortUtil.swap(data,k,j); DOFW"SpE  
if((k-i)>1) quickSort(data,i,k-1); i={4rZOD^  
if((j-k)>1) quickSort(data,k+1,j); ZDp^k{AN9a  
D8~\*0->  
} q&9]4j  
/** k%Tp9x$  
* @param data 2TB'HNTFx  
* @param i |"%OI~^%  
* @param j >iK LC  
* @return (Ly^+Hjg  
*/ n=~!x  
private int partition(int[] data, int l, int r,int pivot) { <{;'0> ToM  
do{ @oH\r-jsgu  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .XeZjoJ$z  
SortUtil.swap(data,l,r); EJ<L,QH3  
} M,ybj5:6  
while(l SortUtil.swap(data,l,r); hPG@iX|V  
return l; )l m7ly8a|  
} c C) <Y#1  
?F$#t6Q  
} tg 'gR  
G~u$BV'  
改进后的快速排序: N>a~k}pPH  
N\.g+ W  
package org.rut.util.algorithm.support; {%k[Z9*tO  
a[j]fv*6  
import org.rut.util.algorithm.SortUtil; 6+ptL-Zt<  
F|!=]A<  
/** &#u\@Qze  
* @author treeroot $\] Mvd  
* @since 2006-2-2 EFI!b60mc  
* @version 1.0 Z<AZO ^  
*/ <Pe'&u  
public class ImprovedQuickSort implements SortUtil.Sort { wi.E$R ckD  
7 u Q +]d  
private static int MAX_STACK_SIZE=4096; (Lh!7g/0N  
private static int THRESHOLD=10; m*)jnd XY  
/* (non-Javadoc) L">jSZW[[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D8E^[w!  
*/ v;?W|kJ.u  
public void sort(int[] data) { >Q"3dw  
int[] stack=new int[MAX_STACK_SIZE]; "B"ql-K  
KX!/n`2u  
int top=-1; \0;w7tdo  
int pivot; "9hD4R  
int pivotIndex,l,r; E;4dlL`*  
f0%'4t  
stack[++top]=0; $JBb] v8_  
stack[++top]=data.length-1; >bhF{*t#;y  
l$HBYA\Qh  
while(top>0){ C~.\2D`zy  
int j=stack[top--]; '?NMQ  
int i=stack[top--]; ]JmE(Y1(1  
`)w=@9B)"  
pivotIndex=(i+j)/2; \oGU6h<  
pivot=data[pivotIndex]; wXdt\@Qr  
D]'8BS3  
SortUtil.swap(data,pivotIndex,j); ;8e}X6YU  
cL#zE  
file://partition OQg}E@LZ  
l=i-1; 4 s9^%K\8{  
r=j; Edcv>}PfE  
do{ |?f~T"|>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T(cpU,Q  
SortUtil.swap(data,l,r); %7\l+g,  
} O\]{6+$fm!  
while(l SortUtil.swap(data,l,r); &i`(y>\  
SortUtil.swap(data,l,j); wF6a*b@v  
# X{lV]Z  
if((l-i)>THRESHOLD){ [(8s\>T  
stack[++top]=i; <5FGL96  
stack[++top]=l-1; CL(D&8v8~  
} ||7x51-yj  
if((j-l)>THRESHOLD){ ,%V%g!6{  
stack[++top]=l+1; mL;oR4{  
stack[++top]=j; ,]9p&xu  
} 4/S3hH  
7g oRj  
} u-.nR}DM_  
file://new InsertSort().sort(data); ].QzOV'  
insertSort(data); `!ja0Sq]U  
} _IxYnm`pc  
/** !@T~m1L eY  
* @param data /6 x[C  
*/ !{g>g%2!  
private void insertSort(int[] data) { ?AI`,*^  
int temp; =gd~rk9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *J4 \KU  
} :V)=/mR  
} c,G[Rk  
} oHV!>K_D  
8KdcU [w]  
} 6s! =de  
^O"o-3dte  
归并排序: THCvcU?X  
sbhUW>%.  
package org.rut.util.algorithm.support; $ 93j;  
/|v b)J  
import org.rut.util.algorithm.SortUtil; ,x[~|J!  
=C^4nP-  
/** A- #c1KU!  
* @author treeroot G{a_\'7  
* @since 2006-2-2 yOk]RB<'r  
* @version 1.0 Vk1 c14i>  
*/ 2aUE<@RU[  
public class MergeSort implements SortUtil.Sort{ )@ .0ai  
MBol_#H  
/* (non-Javadoc) 97}l`z;Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +xYg<AFS  
*/ --7@rxv  
public void sort(int[] data) { P@Pe5H"o  
int[] temp=new int[data.length]; 4%SA%]a L1  
mergeSort(data,temp,0,data.length-1); 2(9~G|C.  
} 5J6~]J  
RAxp2uif  
private void mergeSort(int[] data,int[] temp,int l,int r){ 0(A&m ,  
int mid=(l+r)/2; 0\o5+  
if(l==r) return ; _J_QB]t  
mergeSort(data,temp,l,mid); aq^OzKP?  
mergeSort(data,temp,mid+1,r); % )}rQqQ  
for(int i=l;i<=r;i++){ ~ =$d>ZNQ  
temp=data; t"&qaG{  
} ~8lB#NuN  
int i1=l; L5]uT`Twa  
int i2=mid+1; qI2&a$Zb$  
for(int cur=l;cur<=r;cur++){ WG5)-;>q|  
if(i1==mid+1) .DhB4v&  
data[cur]=temp[i2++]; Xc G   
else if(i2>r) R)]+>M-.  
data[cur]=temp[i1++]; e1R<+`]  
else if(temp[i1] data[cur]=temp[i1++]; }FkF1?C  
else :-T[)Q+-3  
data[cur]=temp[i2++]; VzuU 0  
} nS^,Sq\Ak  
} QM=Y}   
'#612iZo  
} A+"'8%o9}  
Es1T{<G|w  
改进后的归并排序: *HQ>tvUh  
zi+NQOhR  
package org.rut.util.algorithm.support; "Q1oSpF  
W`jKe-jF  
import org.rut.util.algorithm.SortUtil; zm=|#f  
9f3rMPVh(  
/** +!-U+W  
* @author treeroot !<5Wi)*  
* @since 2006-2-2 4 :M}Vz-  
* @version 1.0 TmLfH d  
*/ 1Zgv+.  
public class ImprovedMergeSort implements SortUtil.Sort { %Lfy!]Ru  
34aSRFsk*  
private static final int THRESHOLD = 10; j =PM]  
<*HsJwr)u  
/* Rs "#gT  
* (non-Javadoc) \{}5VVw-S?  
* r]bG,?|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7n'Ww=ttI  
*/ %u*HNo  
public void sort(int[] data) { G~zP&9N|  
int[] temp=new int[data.length]; "lBYn2W  
mergeSort(data,temp,0,data.length-1); UH7FIM7kX  
} |h2=9\:]  
nm@.] "/  
private void mergeSort(int[] data, int[] temp, int l, int r) { j k/-7/r  
int i, j, k; 249DAjn+  
int mid = (l + r) / 2; P,K^ oz}  
if (l == r) En YEAjX  
return; ^-qz!ib  
if ((mid - l) >= THRESHOLD)  ^J& }C  
mergeSort(data, temp, l, mid); &MJ`rj[%  
else cIXqnb  
insertSort(data, l, mid - l + 1); cwI3ANV  
if ((r - mid) > THRESHOLD) |DXi~  
mergeSort(data, temp, mid + 1, r); )3)fq:[  
else 9_J'P2e  
insertSort(data, mid + 1, r - mid); d@+u&xrd  
X->` ~-aj  
for (i = l; i <= mid; i++) { dwUs[v   
temp = data; .|2[! 7CXH  
} n@//d.T  
for (j = 1; j <= r - mid; j++) { O|0,= 5  
temp[r - j + 1] = data[j + mid]; c #8@>;  
} fvZ[eJ  
int a = temp[l]; jFwJ1W;?-  
int b = temp[r]; lQ?_1H~4=  
for (i = l, j = r, k = l; k <= r; k++) { \S)cVp)h  
if (a < b) { _?;74VWA  
data[k] = temp[i++]; fI-f Gx  
a = temp; Eyg F,>.4  
} else { v=?/c-J*  
data[k] = temp[j--]; 7y=1\KW(  
b = temp[j]; CjmF2[|  
} :2AlvjvjZ  
} Qsr+f~"W  
} (bGk=q=M  
#c`/ f6z  
/** L?b;TjLe  
* @param data x{,W<oXg  
* @param l hU 5_ dV  
* @param i *\$ko)x?c  
*/ l+<AM%U\ V  
private void insertSort(int[] data, int start, int len) { >ToI$~84  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Lv:;}  
} a]0hB:  
} {R5_=MG  
} NsL!AAN[V  
} dp*E#XCr1  
6MelN^\[7  
堆排序: Q `z2SYz>  
E&> 2=$~  
package org.rut.util.algorithm.support; F&D ,y-CQ  
xgZ<. r  
import org.rut.util.algorithm.SortUtil; 5ih5=qX  
$!\Z_ :  
/** }}4uLGu)  
* @author treeroot q 7hoI]  
* @since 2006-2-2 uUh6/=y  
* @version 1.0 MUMB\K*$  
*/ F2dwT  
public class HeapSort implements SortUtil.Sort{ !>6`+$=U  
\r- v]]_<d  
/* (non-Javadoc) :<,tGYg/!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H.)J?3  
*/ G PL^!_  
public void sort(int[] data) { G( #EW+  
MaxHeap h=new MaxHeap(); !r9~K^EI  
h.init(data); 3tCT"UvTD  
for(int i=0;i h.remove(); v'SqH,=d  
System.arraycopy(h.queue,1,data,0,data.length); Cuo"6, M  
} -5,+gakSk  
sJm v{wM  
private static class MaxHeap{ 6Bn}W ?  
Dx.hM[  
void init(int[] data){ )C $1))  
this.queue=new int[data.length+1]; MO *7:hI  
for(int i=0;i queue[++size]=data; NX?6 (lO,  
fixUp(size); dX DuO  
} Q VWVZ >l  
} -z>m]YDH  
SHqz &2u  
private int size=0; N`7+] T  
/n3SE0Y  
private int[] queue; P7;q^jlB  
"QM2YJ55m`  
public int get() { )H%Rw V#  
return queue[1]; #kAk d-QY6  
} JgcMk]|'  
c)SQ@B@q  
public void remove() { Q,R|VI6Co  
SortUtil.swap(queue,1,size--); M&0U@ r-  
fixDown(1); [m9=e-KS$Q  
} 4&H&zST//m  
file://fixdown NP$ D9#   
private void fixDown(int k) { $%5vJiuk  
int j; G:Nwi=vN  
while ((j = k << 1) <= size) { ._`?ZJ  
if (j < size %26amp;%26amp; queue[j] j++; ]v0=jm5A  
if (queue[k]>queue[j]) file://不用交换 3OJGBiDAr  
break; 1b8}TG2  
SortUtil.swap(queue,j,k); 10m`LG  
k = j; &[ $t%:`  
} dSbz$Fct  
} sUpSXG-W/@  
private void fixUp(int k) { 6x@4gP y[  
while (k > 1) { ~oeX0l>F  
int j = k >> 1; jgT *=/GH2  
if (queue[j]>queue[k]) K#]FUUnj=  
break; Wfh+D[^  
SortUtil.swap(queue,j,k); mxTuwx   
k = j; 6#kK  
} K]ds2Kp&  
} Sh7ob2  
C59H| S  
} /.:&9 c  
k~qZ^9QB~  
} q (}#{OO  
M[^EHa<i  
SortUtil: ?1Uq ud  
;i&t|5y~  
package org.rut.util.algorithm; r\m2Oo)]  
6jz~q~ I  
import org.rut.util.algorithm.support.BubbleSort; 8lF:70wia  
import org.rut.util.algorithm.support.HeapSort; &e5,\TQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; P(i E"KH;  
import org.rut.util.algorithm.support.ImprovedQuickSort; (+;%zh-  
import org.rut.util.algorithm.support.InsertSort; Lg+cHaA  
import org.rut.util.algorithm.support.MergeSort; >!#or- C  
import org.rut.util.algorithm.support.QuickSort; Ej'N !d.  
import org.rut.util.algorithm.support.SelectionSort; ]wV_xZ)l^A  
import org.rut.util.algorithm.support.ShellSort; pY(S]i  
9HD5A$  
/** #;<dtw  
* @author treeroot S5wkBdr{  
* @since 2006-2-2 42wZy|oqp  
* @version 1.0 H2E'i\  
*/ -<^3!C >  
public class SortUtil { kl#) 0yqN0  
public final static int INSERT = 1; oN Rp  
public final static int BUBBLE = 2; &p.7SPQ8/  
public final static int SELECTION = 3; )Z63 cr/  
public final static int SHELL = 4; els71t -  
public final static int QUICK = 5; DcEGIaW  
public final static int IMPROVED_QUICK = 6; _cQhT  
public final static int MERGE = 7; BXLw  
public final static int IMPROVED_MERGE = 8; kj'  
public final static int HEAP = 9; iayxN5,  
}K9Ji]tOK:  
public static void sort(int[] data) { 7OLchf  
sort(data, IMPROVED_QUICK); 8V+  
} ;f2<vp;U  
private static String[] name={ CV *  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2yndna-  
}; e)]DFP[ n  
/UiB1-*b  
private static Sort[] impl=new Sort[]{ iI!g1  
new InsertSort(), YG>6;g)Zm  
new BubbleSort(), 0<]]q[pr  
new SelectionSort(), -d6PXf5  
new ShellSort(), #\MkbZc d  
new QuickSort(), IdciGS6 t  
new ImprovedQuickSort(), >~@ABLp 6  
new MergeSort(), +<f!#4T  
new ImprovedMergeSort(), avxI%%|  
new HeapSort() QykHB k  
}; pcPRkYT[ M  
Is }?:ET  
public static String toString(int algorithm){ RH&}'4JE:  
return name[algorithm-1]; BmCBC,j<v>  
} qim|=  
"oT]_WHqo  
public static void sort(int[] data, int algorithm) { lsB.>NlU  
impl[algorithm-1].sort(data); PF: E{_~  
} :6}cczQE|O  
RBOhV/f  
public static interface Sort { kk+:y{0V  
public void sort(int[] data); "Kf4v|6;  
} Q&?B^[N*Q  
GlaZZ,   
public static void swap(int[] data, int i, int j) { #oEq)Vq>g|  
int temp = data; ()yOK$"  
data = data[j]; <"x *ZT  
data[j] = temp; Owm2/  
} +c\uBrlZQ;  
} jx8hh}C  
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