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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。 8`0/?MZ)   
插入排序:  ./iC  
mn>$K"_k  
package org.rut.util.algorithm.support; ~g6`Cp`  
!b=jD;<  
import org.rut.util.algorithm.SortUtil; !P_8D*^9  
/** h.~:UR*   
* @author treeroot Zs$Qo->F  
* @since 2006-2-2 x+=Ko  
* @version 1.0 \E!a=cL!  
*/ #jc+2F,+{  
public class InsertSort implements SortUtil.Sort{ qt.G_fOz  
NQFMExg,  
/* (non-Javadoc) n.323tNY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) " 0:&x n8L  
*/ ;aY.CgX  
public void sort(int[] data) { MPtn$@  
int temp; d"P\ =`+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N>+s8L.?  
} G[pDKELL  
} 8 BHtN  
} Tx+Bkfj  
G>>`j2:y  
} >`3wEJ"<  
|\ZsoA  
冒泡排序: %/K'VE6pb  
fW'@+<b  
package org.rut.util.algorithm.support; /|)VO?*D  
Ji#"PE/Pt  
import org.rut.util.algorithm.SortUtil; \h#,qTE  
XVlZ:kz  
/** }:b6WN;c  
* @author treeroot )}G?^rDH(  
* @since 2006-2-2 v4pFts$J  
* @version 1.0 <#[_S$54  
*/ ?tf/#5t}  
public class BubbleSort implements SortUtil.Sort{ 5q.d$K |  
>BDK?YMx  
/* (non-Javadoc) FLqF!N\G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  L$Uy  
*/ :skNEY].  
public void sort(int[] data) { +# 38  
int temp; tm"9`   
for(int i=0;i for(int j=data.length-1;j>i;j--){ mr4W2Z@L  
if(data[j] SortUtil.swap(data,j,j-1); u(Y! _  
} &yQilyU{V  
} 5Oa`1?C1  
} R.Plfm06Ue  
} tU5Z?QS  
|qn`z-  
} }k`-n32)|  
n%SR5+N"  
选择排序: )*b dG'}  
pBd_Ba N  
package org.rut.util.algorithm.support; "&_$%#HUv  
xD:t$~  
import org.rut.util.algorithm.SortUtil; dTE(+M- Gr  
{pV\]E\]  
/** g}cb>'=={  
* @author treeroot k^JV37;bl  
* @since 2006-2-2 ke+3J\;>  
* @version 1.0 @1`!}.Tk  
*/ jGeil qPC  
public class SelectionSort implements SortUtil.Sort { WDM^rjA|j  
<l:c O$ m  
/* d4 Hpe>  
* (non-Javadoc) d){o#@  
* JGJy_.C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \!+#9sq0  
*/ *2? -6  
public void sort(int[] data) { lBYc(cr  
int temp; mMz^I7$  
for (int i = 0; i < data.length; i++) { 4 8}\  
int lowIndex = i; by:"aDGK.  
for (int j = data.length - 1; j > i; j--) { w%3R[Kdzk  
if (data[j] < data[lowIndex]) { 3pV^Oe^9  
lowIndex = j; | 4slG   
} fcim4dfP  
} R#n!1~ (  
SortUtil.swap(data,i,lowIndex); l{2Y[&%  
} bzl-|+!yB  
} qwERy{]Sp;  
[110[i^  
} %u)niY-g  
1+{V^) V?  
Shell排序: cLZaQsS%  
l2&s4ERqSm  
package org.rut.util.algorithm.support; $*KM%M6  
60iMfc T  
import org.rut.util.algorithm.SortUtil; f4b`*KGf  
Z{MR#.I  
/** UhI T!x  
* @author treeroot 'X$J+s}6&  
* @since 2006-2-2 4U;Zs3  
* @version 1.0 iE}Lw&x  
*/ jQV.U~25Q  
public class ShellSort implements SortUtil.Sort{ ;PA^.RB  
4GL-3e  
/* (non-Javadoc) kdam]L:9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O1 KT  
*/ fx"~WeVcO  
public void sort(int[] data) { wH<'*>/  
for(int i=data.length/2;i>2;i/=2){ o)M=; !  
for(int j=0;j insertSort(data,j,i);  t=6[FK  
} Gy3t   
} vhEXtjL  
insertSort(data,0,1); ]9 ArT$  
} 0wA?.~ L  
v)!C Dpw  
/** W pdn^=dhL  
* @param data *oW^P~m/  
* @param j fl4z'8P"(  
* @param i ` &E-  
*/ 8 etNS~^  
private void insertSort(int[] data, int start, int inc) { H;=JqD8`  
int temp; 9[9 ZI1*s  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ln4zy*v{  
} 'A#bBn,|  
} jkrv2 `"  
} d*===~  
"fq8)  
} "L)=Y7Dx  
kuZs30^  
快速排序: ]6*+i $  
}23#z  
package org.rut.util.algorithm.support; (v2.8zrJ  
+J+[fbqX  
import org.rut.util.algorithm.SortUtil; (TF;+FRW  
PIthv [F  
/** @5)THYAx4  
* @author treeroot {0ozpE*(  
* @since 2006-2-2 g(b:^_Nep  
* @version 1.0 PAcbC| y  
*/ Di^7@}kQS  
public class QuickSort implements SortUtil.Sort{ ~t,-y*=  
g3h:oQCS  
/* (non-Javadoc) ]CnqPLqL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -:P`Rln  
*/ E979qKl  
public void sort(int[] data) { $YPQi.  
quickSort(data,0,data.length-1); x392uS$#  
} jWX^h^n7K  
private void quickSort(int[] data,int i,int j){ :8CYTEc  
int pivotIndex=(i+j)/2; Ev)aXP  
file://swap {T=rsPp<@  
SortUtil.swap(data,pivotIndex,j); )yyS59s  
hj*Fn  
int k=partition(data,i-1,j,data[j]); N =0R6{'  
SortUtil.swap(data,k,j); -gzY ~a  
if((k-i)>1) quickSort(data,i,k-1); Sd\+f6x  
if((j-k)>1) quickSort(data,k+1,j); /Sn>{ &  
yrgb6)]nm@  
} R c.8j,]  
/** }w%W A&"W  
* @param data `B GU  
* @param i AY~~a)V  
* @param j d$O)k+j  
* @return Q =!f,  
*/ 8ba*:sb  
private int partition(int[] data, int l, int r,int pivot) { Q&;d7A.@  
do{ *]uj0@S  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /U1 jCLR'  
SortUtil.swap(data,l,r); aN}l&4d  
} I8]q~Q<-P  
while(l SortUtil.swap(data,l,r); YYiT,Xp<A  
return l; \NN5'DBx  
} "p[FFg  
d J;y>_  
} (8?5REz  
IY=CTFQ8lm  
改进后的快速排序: (9X>E+0E  
 =>Md>VM  
package org.rut.util.algorithm.support; i)[8dv  
*\5o0~~8J  
import org.rut.util.algorithm.SortUtil; Ov5 *&*P  
1MF0HiC  
/** ::Nhs/B/  
* @author treeroot Jjgy;*hM  
* @since 2006-2-2 mEM/}]2  
* @version 1.0 oD=6D9c?  
*/ ncy?w e  
public class ImprovedQuickSort implements SortUtil.Sort { HcKZmL. wp  
>a aHN1Ca  
private static int MAX_STACK_SIZE=4096; +mqz)-x  
private static int THRESHOLD=10; wV,l }Xb-  
/* (non-Javadoc) sJHN4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jRv j:H9  
*/ \XUG-\$p  
public void sort(int[] data) { N+[ |"v  
int[] stack=new int[MAX_STACK_SIZE]; OlV'#D   
Wxxnc#;lv  
int top=-1; U'8ub(:&  
int pivot; ny,a5zEnF  
int pivotIndex,l,r; 1 =cFV'  
O [81nlhS0  
stack[++top]=0; Q6r!=yOEY  
stack[++top]=data.length-1; OGjeE4  
W,[b:[~v  
while(top>0){ r,` 59  
int j=stack[top--]; @Q=P6Rz {S  
int i=stack[top--]; L< gp "e  
).Ei:/*j  
pivotIndex=(i+j)/2; .L X8ko  
pivot=data[pivotIndex]; yM8<)6=  
J3$Ce%<   
SortUtil.swap(data,pivotIndex,j); KP[H&4eoC  
#Ang8O@y  
file://partition Dn#GoDMJ[  
l=i-1; Fk 5;  
r=j; U/|H%b  
do{ u7Xr!d+wR  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #78P_{#!  
SortUtil.swap(data,l,r); s|1BqoE  
} k$hNibpkt  
while(l SortUtil.swap(data,l,r); ;{Sgv^A  
SortUtil.swap(data,l,j); e0#/3$\aSV  
2[*r9%W  
if((l-i)>THRESHOLD){ R&Oqm hT!  
stack[++top]=i; cVR3_e{&H  
stack[++top]=l-1; =>0+BD  
} #] @<YKoV{  
if((j-l)>THRESHOLD){ <Rl:=(]i~  
stack[++top]=l+1; V`n;W6Q17  
stack[++top]=j; -UPlQL  
} 3]X9 z  
Jhyb{i8RR  
} G|p3NhLgO=  
file://new InsertSort().sort(data); ~4Gs\U:!Q  
insertSort(data); gyI(O>e  
} DM-8azq $  
/** E/MNz}+  
* @param data .o2]ndT/J  
*/ 8%$Vj  
private void insertSort(int[] data) { n>w/T"  
int temp; qX GAlCq@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =!G3YZ  
} $hkMJ),T~  
} o*_O1P  
} t ._PS3  
V0gk8wD  
} 5K;vdwSB  
Vs1j9P|G  
归并排序: +q==Y/z  
r 3@Q(Rb  
package org.rut.util.algorithm.support; 2 NgEzY 5  
CWVCYm@!kz  
import org.rut.util.algorithm.SortUtil; s_=/p5\  
LiyEF&_u  
/** H:X=v+W  
* @author treeroot D&{ 7Av  
* @since 2006-2-2 qNhQ2x\  
* @version 1.0 qIwI]ub~  
*/ o b  
public class MergeSort implements SortUtil.Sort{ {(7D=\eU  
rAdYBr=0  
/* (non-Javadoc) yqF$J"=|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lc|5&<8ZG1  
*/ e!wS"[,  
public void sort(int[] data) { SWjOJjn  
int[] temp=new int[data.length]; ^|6%~jkD5  
mergeSort(data,temp,0,data.length-1); f:k3j}&  
} ~RVx~hh  
27-<q5q  
private void mergeSort(int[] data,int[] temp,int l,int r){ .,:700n+^  
int mid=(l+r)/2; uf* sI  
if(l==r) return ; R|T_9/#)  
mergeSort(data,temp,l,mid); _/"m0/,  
mergeSort(data,temp,mid+1,r); -{>Nrx|  
for(int i=l;i<=r;i++){ bA-=au?o5  
temp=data; (lhbH]I  
} DT #1*&-  
int i1=l; 5Qp5JMK  
int i2=mid+1; DJeP]  
for(int cur=l;cur<=r;cur++){ ?op6_a-wm  
if(i1==mid+1) W'\{8&:!  
data[cur]=temp[i2++]; "v-\nAu  
else if(i2>r) qoBm!|q  
data[cur]=temp[i1++]; im^G{3z  
else if(temp[i1] data[cur]=temp[i1++]; m :ROq  
else br"p D-}  
data[cur]=temp[i2++]; fbS l$jn.  
} uXuMt a* Y  
} o<e AZ  
,cs`6Bd4  
} i=%wZHc;  
vJ$#m_aa  
改进后的归并排序: `j088<?j  
yzhr"5_  
package org.rut.util.algorithm.support; or/Y"\-!  
y&\ J  
import org.rut.util.algorithm.SortUtil; I<*U^e  
M'D;2qo  
/** c"%XE#D  
* @author treeroot 2.Ym  
* @since 2006-2-2 hq/k}Y  
* @version 1.0 6hSj)  
*/ F;jl0)fBR=  
public class ImprovedMergeSort implements SortUtil.Sort { n{pS+u z  
~130"WQ;  
private static final int THRESHOLD = 10; ([s}bD.9  
F]3iL^v  
/* MJ >9[hs  
* (non-Javadoc) De[!^/f;T  
* y";{k+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pi? q<p%  
*/ ;$(a+?  
public void sort(int[] data) { )`Tny]M  
int[] temp=new int[data.length]; .:c^G[CQ^9  
mergeSort(data,temp,0,data.length-1); 7|3Z+#|T  
} ):eX*  
+Ij>\;vM"  
private void mergeSort(int[] data, int[] temp, int l, int r) { NA[yT  
int i, j, k; J0w[vrs&]  
int mid = (l + r) / 2; 3A]Y=gfa  
if (l == r) \`r5tQr  
return; BCF- lrZ&  
if ((mid - l) >= THRESHOLD) "8VCXD  
mergeSort(data, temp, l, mid); x=yBB;&  
else fk`y}#7M  
insertSort(data, l, mid - l + 1); d c_^   
if ((r - mid) > THRESHOLD) M cE$=Vv  
mergeSort(data, temp, mid + 1, r); k( 1rp|qf  
else ="3Hc=1?R  
insertSort(data, mid + 1, r - mid); y[S 5  
UDV,co  
for (i = l; i <= mid; i++) { nCEt*~t9VE  
temp = data; FJo N"X  
} t/HMJ  
for (j = 1; j <= r - mid; j++) { Uf{cUY,j_  
temp[r - j + 1] = data[j + mid]; QvK/31*QG  
} V{;Mh u`+  
int a = temp[l]; |~k=:sSz{  
int b = temp[r]; gm9e-QIHK  
for (i = l, j = r, k = l; k <= r; k++) { V;ZyAp  
if (a < b) { ~m y\{q  
data[k] = temp[i++]; !Pt|Hk dr  
a = temp; mkTf}[O  
} else { |4pE"6A  
data[k] = temp[j--]; Fs<kMT  
b = temp[j]; -DhF> 4f  
} k}l5v)m  
} e{.2*>pH  
} "m):"  
{ dwm>a  
/** 5NbI Vz  
* @param data e-H:;m5R  
* @param l 25*/]i u  
* @param i S #%'Vrp  
*/ cC1nC76[  
private void insertSort(int[] data, int start, int len) { Qs8iu`'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5 |{0|mP  
} 3D +>NB  
} lh3%2Dq$  
} ^%|{>Mz;c  
} c, \TL ]  
V:)k@W?P  
堆排序: lQ!ukl)  
%Y:'5\^lC  
package org.rut.util.algorithm.support; >Be PE(k  
8 wQV^G  
import org.rut.util.algorithm.SortUtil; [oKc<o7)~"  
k uU,7 <o  
/** :}FMauHh  
* @author treeroot $jo}?Y+  
* @since 2006-2-2 oHB51< }  
* @version 1.0 `;*%5WD%  
*/ yPn5l/pDDr  
public class HeapSort implements SortUtil.Sort{ u2y?WcMv  
"T?%4^:g  
/* (non-Javadoc) cIK-VmO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7EOn4I2@[  
*/ q0jzng  
public void sort(int[] data) { C0z E<fl  
MaxHeap h=new MaxHeap(); 1C^6'9o  
h.init(data); 'CjcOI s  
for(int i=0;i h.remove(); ='T<jV`evu  
System.arraycopy(h.queue,1,data,0,data.length); bw9a@X  
} ;$&&tEh)  
ik_Ll|  
private static class MaxHeap{ 724E(?>J  
^4x(a&  
void init(int[] data){ *bDuRr?v9  
this.queue=new int[data.length+1]; #?YQ&o~gZ  
for(int i=0;i queue[++size]=data; 9yajtR  
fixUp(size); DoX#+ 07u4  
} =et=X_3-  
} ]zmY] 5  
0^*4LM|z  
private int size=0; U: ~O^  
!FZb3U@  
private int[] queue; ;B o2$  
YMj z , N  
public int get() { ueDG1)  
return queue[1]; k]l M%  
} $d{{><  
;VeC(^-eh6  
public void remove() { ,xuqQ;JX  
SortUtil.swap(queue,1,size--); uXxyw7\W  
fixDown(1); ^F5[2<O/!  
} aRdk^|}  
file://fixdown #,Fk  
private void fixDown(int k) { ^, q\S  
int j; L 9Z:>i?  
while ((j = k << 1) <= size) { L qMH]W  
if (j < size %26amp;%26amp; queue[j] j++; ]MfT5#(6h  
if (queue[k]>queue[j]) file://不用交换 PZKKbg2 S  
break; ox{)O/aj  
SortUtil.swap(queue,j,k); H5S>|"`e`e  
k = j; Q*ZqY  
} Z9cch- u~  
} @ T'!;)  
private void fixUp(int k) { Dh BUMDoB  
while (k > 1) { .8uJ%'$)  
int j = k >> 1; `fu(  
if (queue[j]>queue[k]) BOrfKtG\  
break; ~zi6wu(3  
SortUtil.swap(queue,j,k); b4Zkj2L  
k = j; hdQ[=PH)  
} 5.0BaVwi  
} =PP]LDlJs  
0yfmQ=,X  
} &7,Kv0j}  
CSRcTxH  
} z ,87;4-  
}N#jA yp!  
SortUtil: j0>S)Q  
3P\#moJ  
package org.rut.util.algorithm; p )etl5  
ba1zu|@w  
import org.rut.util.algorithm.support.BubbleSort; 0V{-5-.  
import org.rut.util.algorithm.support.HeapSort; V?kJYf(<  
import org.rut.util.algorithm.support.ImprovedMergeSort; D*|h c  
import org.rut.util.algorithm.support.ImprovedQuickSort; Mou>|U 1e"  
import org.rut.util.algorithm.support.InsertSort; |#^u%#'[2  
import org.rut.util.algorithm.support.MergeSort; "KcSOjvJ  
import org.rut.util.algorithm.support.QuickSort; ,oT?-PC$z  
import org.rut.util.algorithm.support.SelectionSort; LUna stA^  
import org.rut.util.algorithm.support.ShellSort; Vx;f/CH3!  
Bbz#$M!:  
/** U O YM   
* @author treeroot lfOF]Kiqr  
* @since 2006-2-2 5]:fkx  
* @version 1.0 %E3|b6k\  
*/ <,(6*b  
public class SortUtil { X<Rh-1$8F  
public final static int INSERT = 1; 4};iL)  
public final static int BUBBLE = 2;  4C/  
public final static int SELECTION = 3; 1u:OzyJy  
public final static int SHELL = 4; # 5v 2`|)  
public final static int QUICK = 5; >(ku*  
public final static int IMPROVED_QUICK = 6; sl}bNzT#  
public final static int MERGE = 7; Gn<s >3E  
public final static int IMPROVED_MERGE = 8; *^bqpW2$q  
public final static int HEAP = 9; R;.zS^LL  
sEt5!&  
public static void sort(int[] data) { y>'^<xk  
sort(data, IMPROVED_QUICK); OthQ)&pq X  
} J Xo_l  
private static String[] name={ $2A%y14  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" HTao)`.  
}; ?5K.#>{  
rV<yM$IA  
private static Sort[] impl=new Sort[]{ >:4}OylhM  
new InsertSort(), &[`p qX  
new BubbleSort(), eh2w7 @7Q  
new SelectionSort(), WEFYV=I\  
new ShellSort(), H^_[nL  
new QuickSort(), @aN<nd`q)  
new ImprovedQuickSort(), n7i;^=9 mM  
new MergeSort(), 'uGn1|Pvy  
new ImprovedMergeSort(), %L.,:mtq)  
new HeapSort() )?^0<l#s  
}; )TnxsFC  
 0$b)@  
public static String toString(int algorithm){ {-2I^Ym 5i  
return name[algorithm-1]; ~=aD*v<3d  
} mg[=~&J^  
PEW^Vl-6q  
public static void sort(int[] data, int algorithm) { W&q]bi@C  
impl[algorithm-1].sort(data); |Kky+*  
} UBs'3M  
m]R< :_  
public static interface Sort { hC4##pAa  
public void sort(int[] data); rbS67--]  
} (s4w0z  
%*>=L$A  
public static void swap(int[] data, int i, int j) { !e*Q2H+  
int temp = data; 2>l4$G 0  
data = data[j]; dX-{75o5P  
data[j] = temp; |GM?4'2M.  
} G&)A7WaC  
} H{ p   
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