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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。 >:U{o!N`#_  
插入排序: "C%* 'k  
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package org.rut.util.algorithm.support; =Cr F(wVO"  
wo!;Bxo N  
import org.rut.util.algorithm.SortUtil; ehYGw2  
/** []eZO_o6j  
* @author treeroot bMF`KRP2  
* @since 2006-2-2 9RN! <`H  
* @version 1.0 2Y{r2m|o  
*/ _M}}H3  
public class InsertSort implements SortUtil.Sort{ |/p2DU2  
/H[!v:U  
/* (non-Javadoc) $P~Tt4068  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3MFb\s&Fq  
*/ S QVyCxcX_  
public void sort(int[] data) {  'x\{sv  
int temp; -qndBS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  w4p<q68  
} FZhjI 8+,~  
} !_UBw7Zm  
} P&]PJt5  
I!-5 #bxD  
} h/F,D_O>ZO  
;F'/[l{+  
冒泡排序: ;*EPAC+  
lvZ:Aw r  
package org.rut.util.algorithm.support; Ni 5Su  
L%O( I  
import org.rut.util.algorithm.SortUtil; j*)K> \  
zd3%9rj$  
/** {VrjDj+Xy  
* @author treeroot <swY o<?J#  
* @since 2006-2-2 [ 6t!}q  
* @version 1.0 |#!P!p}  
*/ wNm~H  
public class BubbleSort implements SortUtil.Sort{ T8rf+B/.L  
g{06d~Y  
/* (non-Javadoc) cH%#qE3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b:}+l;e5 2  
*/ WKPuIE:  
public void sort(int[] data) { c 7uryL  
int temp; /_*L8b  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {]\!vG6  
if(data[j] SortUtil.swap(data,j,j-1); 14v,z;HXj  
}  =:-x;  
} YV0K&d  
} bfjtNF*^  
} *z A1NH5  
UA}oOteG  
} -=D6[DjU<  
d4zqLD$A  
选择排序: ^d2bl,1  
T&`H )o  
package org.rut.util.algorithm.support; *aF<#m v  
:X6A9jmd  
import org.rut.util.algorithm.SortUtil; _n+./ B  
#e8NF,H5  
/** KzC`*U[  
* @author treeroot ;ywQk| r  
* @since 2006-2-2 7o]p0iLej  
* @version 1.0  /P/S0  
*/ "xV9$m>  
public class SelectionSort implements SortUtil.Sort { J<{@D9r9<~  
?0VLx,kp  
/* m mj6YQ0a  
* (non-Javadoc) i`1QR@11  
* SrVJ Q~ :>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  !mX 2  
*/ "sf]I[a  
public void sort(int[] data) { ~\z\f} w  
int temp; Rg6e7JVu  
for (int i = 0; i < data.length; i++) { S?5z  
int lowIndex = i; 85fBKpEe  
for (int j = data.length - 1; j > i; j--) { xv{iWJcs  
if (data[j] < data[lowIndex]) { kOGpe'bV  
lowIndex = j; 7QlA/iKqK  
} {AY `\G  
} +FoR;v)z=F  
SortUtil.swap(data,i,lowIndex); =kspHP<k  
} ^vmyiF  
} sGCV um}  
8L?35[]e  
} dB`YvKr#  
P==rY5+s`  
Shell排序: gn? ~y`  
UEJX0=  
package org.rut.util.algorithm.support; }>w;(R  
'lU9*e9  
import org.rut.util.algorithm.SortUtil; @,-xaZ[  
!=.5$/  
/** k.DDfuKN  
* @author treeroot uSs~P%@6|  
* @since 2006-2-2 GJA3  
* @version 1.0 ,OLN%2Sq  
*/ S) [`Bm  
public class ShellSort implements SortUtil.Sort{ H! ZPP8]j>  
pt;kN&A^  
/* (non-Javadoc) Ve&(izIh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @^vVou_  
*/ g|PVOY+|^  
public void sort(int[] data) { I hvL2 zB  
for(int i=data.length/2;i>2;i/=2){ =^P<D&%q  
for(int j=0;j insertSort(data,j,i); j`\}xDg  
} D'>yu"  
} mB$r>G/'  
insertSort(data,0,1); ;&|ja]r  
} TZq']Z)#  
j"E_nV:Qc  
/** )ll`F7B-  
* @param data h{]l?6`  
* @param j i%M2(8&^Q  
* @param i zb}:wUR  
*/ >sP-)ZeuU[  
private void insertSort(int[] data, int start, int inc) { 33\{S$p  
int temp; \HDRr*KO  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Y>+\:O  
} Frt_X%  
} a`CsLBv&  
} tWi@_Rlx;  
k[N46=u  
} 8KD7t&H  
+gTnq")wnI  
快速排序: c8gdY`  
//W<\  
package org.rut.util.algorithm.support; (i7]N[  
;""V s6  
import org.rut.util.algorithm.SortUtil; ;h3uMUCml  
nVoPTr  
/**  _tN"<9v.  
* @author treeroot :JSOj@s  
* @since 2006-2-2 m5sgcxt/  
* @version 1.0 16o3ER  
*/ z@cL<.0CE  
public class QuickSort implements SortUtil.Sort{ &gkloP @  
pd,5.d  
/* (non-Javadoc) kzGD *  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RaAi9b[/S  
*/ C}+w<  
public void sort(int[] data) { 5>7ECe*  
quickSort(data,0,data.length-1); (?&X<=|"  
} u(?  
private void quickSort(int[] data,int i,int j){ )5Kzq6.  
int pivotIndex=(i+j)/2; 3a_S-&?X  
file://swap jjkiic+tDN  
SortUtil.swap(data,pivotIndex,j); :a}hd^;[%8  
HW{osav9  
int k=partition(data,i-1,j,data[j]); LN?f w  
SortUtil.swap(data,k,j); )k3zOKZ;  
if((k-i)>1) quickSort(data,i,k-1);  AMvM H  
if((j-k)>1) quickSort(data,k+1,j); TC3xrE:U<m  
mz[rB|v"/7  
} w/N.#s^  
/** G;FY2;adK  
* @param data q?&vV`PG5  
* @param i Tm@mk  
* @param j y&A*/J4P  
* @return .8l\;/o|  
*/ #OH-LWZh  
private int partition(int[] data, int l, int r,int pivot) { xF5q=%n  
do{ R1X9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Jk|c!,!  
SortUtil.swap(data,l,r); DVRE;+Jt  
} m"~$JA u  
while(l SortUtil.swap(data,l,r); [z`U 9J  
return l; _5.^A&Y*  
} W=o90TwbN  
}V?SedsY  
} IR|AlIv  
AU$W=Z*  
改进后的快速排序: Zo22se0)  
nvxftbfE^D  
package org.rut.util.algorithm.support; N9Yc\?_NU_  
Tul_/`An  
import org.rut.util.algorithm.SortUtil; |~CN]N  
;58l_ue  
/**  s6 w</  
* @author treeroot Z6X?M&-Lz  
* @since 2006-2-2 veAGUE %3  
* @version 1.0 5Y"lr Y38  
*/ >"B95$x5  
public class ImprovedQuickSort implements SortUtil.Sort { oKiBnj5J  
7Cx%G/(  
private static int MAX_STACK_SIZE=4096; Txfu%'2)e  
private static int THRESHOLD=10; ZyT9y  
/* (non-Javadoc) m ,)4k&d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "kz``6C  
*/ E:(flW=  
public void sort(int[] data) { ^:\|6`{n  
int[] stack=new int[MAX_STACK_SIZE]; G#8HY VF  
rcPP-+XW  
int top=-1; W{At3Bfy  
int pivot; [(w _!|S  
int pivotIndex,l,r; ^/2n[orl5  
P6zy<w  
stack[++top]=0; WL7R.!P  
stack[++top]=data.length-1; 6?Rm>+2>v  
'u{m37ZJ  
while(top>0){ uY,&lX+!  
int j=stack[top--]; m]+g[L?-  
int i=stack[top--]; oJUVW"X6  
"44VvpQC  
pivotIndex=(i+j)/2; 0ho+Y@8  
pivot=data[pivotIndex]; +%=Ao6/#  
hJ>{`Tw  
SortUtil.swap(data,pivotIndex,j); L=Fm:O'#2  
# h]m8  
file://partition ea=@r Ng  
l=i-1; ,g#=pdX;  
r=j; 1 +O- g  
do{ l];,)ddD9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); D!ToCVos  
SortUtil.swap(data,l,r); /);cl;"  
} f:GZb?Wyd  
while(l SortUtil.swap(data,l,r); dOqn0Z  
SortUtil.swap(data,l,j); "Git@%80  
[P]zdw w#  
if((l-i)>THRESHOLD){ Lf&p2p?~c  
stack[++top]=i; ?0WJB[/  
stack[++top]=l-1; <bWhTNOb  
} Q_euNoA0  
if((j-l)>THRESHOLD){ vAbMU  
stack[++top]=l+1; =GTltFqI1  
stack[++top]=j; GNA:|x  
} Rgw\qOb  
gXZ.je)NM  
} d%\ {,  
file://new InsertSort().sort(data); wLPL 9  
insertSort(data); F"#bCnS  
} fKf5i@CvB@  
/** G\?fWqx  
* @param data  Y5 $5qQ  
*/ 3 ~0Z.!O  
private void insertSort(int[] data) { D:e9609  
int temp; t;T MD\BU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zy~vw6vu  
} ^1BQejD  
} u{,e8. Z  
} Aj#CB.y  
d,CtlWp  
} N Q_H-D\,  
}xn\.M:ic  
归并排序: V{p*N*  
+ O=wKsGD  
package org.rut.util.algorithm.support; F``$}]9KHD  
OWx YV$  
import org.rut.util.algorithm.SortUtil; E'?yI' ~=  
t?L;k+sMM  
/** 9w^1/t&=04  
* @author treeroot M2(+}gv;7p  
* @since 2006-2-2 \]e"#"v}}_  
* @version 1.0 2K'3ry)[y  
*/ [h+MA>%!  
public class MergeSort implements SortUtil.Sort{ ZWQrG'$?o8  
k]!Fh^O~,  
/* (non-Javadoc) r9sW:cM:e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )d!,,o  
*/ 6e(|t2^  
public void sort(int[] data) { w?d~c*4+  
int[] temp=new int[data.length]; QM=M<~<Voh  
mergeSort(data,temp,0,data.length-1); dq28Y$9~  
} INOw0E[  
a ?/GEfd  
private void mergeSort(int[] data,int[] temp,int l,int r){ s"#JBw\7  
int mid=(l+r)/2; O6NgI2[O  
if(l==r) return ; 8rAOs\ys  
mergeSort(data,temp,l,mid); ^6bU4bA  
mergeSort(data,temp,mid+1,r); 8bLA6qmM\  
for(int i=l;i<=r;i++){ cu5Yvp  
temp=data; "jH=O(37  
} "G-} wt+P  
int i1=l; \/g.`Pe  
int i2=mid+1; o_p#sdt"  
for(int cur=l;cur<=r;cur++){ S H2|xn  
if(i1==mid+1) r t@Jw]az  
data[cur]=temp[i2++]; fpJM)HU  
else if(i2>r) l&S2.sC  
data[cur]=temp[i1++]; 1P:r=Rt/  
else if(temp[i1] data[cur]=temp[i1++];  AC@WhL  
else o7)<pfif  
data[cur]=temp[i2++]; S#Tc{@e  
} l)m\i_r:  
} lG/M%i  
G.OAzA13!t  
} eVyXh>b*  
4n @}X-)  
改进后的归并排序: zV_U/]y  
fNNkc[YTZI  
package org.rut.util.algorithm.support; ^I=c]D]);  
!qsk;Vk7Z  
import org.rut.util.algorithm.SortUtil; s!esk%h{K  
!'o5X]s  
/** XW w=3$  
* @author treeroot '^)Ve:K-.  
* @since 2006-2-2 w?)v#]<-  
* @version 1.0 6ziiV _p  
*/ l2QO\O I9m  
public class ImprovedMergeSort implements SortUtil.Sort { ]fvU}4!  
Fk@A;22N  
private static final int THRESHOLD = 10; /. GHR  
P,r9  <  
/* y|f`sBMM  
* (non-Javadoc) aG.j0`)%  
* 7p%W)=v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k nrR%e;  
*/ d0ThhO  
public void sort(int[] data) { 7cV9xIe^  
int[] temp=new int[data.length]; 2?9 FFlX  
mergeSort(data,temp,0,data.length-1); 0g}+%5]yg  
} 64;F g/t  
kY*3)KCp  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4A^=4"BCV  
int i, j, k; M24FuS  
int mid = (l + r) / 2; V9[-# Ti  
if (l == r) k>y68_  
return; =r=[e}&9  
if ((mid - l) >= THRESHOLD) Pz#D9.D0  
mergeSort(data, temp, l, mid); eSo/1D  
else [,[;'::=o4  
insertSort(data, l, mid - l + 1); WBD e`  
if ((r - mid) > THRESHOLD) lPF(&pP  
mergeSort(data, temp, mid + 1, r); qD=o;:~Km  
else :9un6A9JS  
insertSort(data, mid + 1, r - mid); Y [Jt+p]  
7OY<*ny  
for (i = l; i <= mid; i++) { iU3)4(R  
temp = data; SQ!wq  
} ^Yz.,!B[  
for (j = 1; j <= r - mid; j++) { 5[l9`Cn&A  
temp[r - j + 1] = data[j + mid]; 5ws|4V  
} 4+%;eY.A  
int a = temp[l]; 8}9|hT;  
int b = temp[r]; #-$\f(+<  
for (i = l, j = r, k = l; k <= r; k++) { d\C x(Lb[  
if (a < b) { :U)>um34e  
data[k] = temp[i++]; [5K& J-W  
a = temp; $MD|YW5  
} else { g&9E>wT  
data[k] = temp[j--]; ;/+VHZP;  
b = temp[j];  +]Ca_`  
} Y2709LWmP  
} i bA Z*I  
} Ncr38~;w  
^% y<7>%  
/** #eSVFD5ZU  
* @param data q>:>f+4  
* @param l 7 j$ |fS  
* @param i E +\?|q !T  
*/ > w:+nG/r  
private void insertSort(int[] data, int start, int len) { Lt ; !q b.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); c4QegN  
} d~+8ui{-U  
} 8m,PsUp7  
} qjcy{@ j  
} 2,,zN-9mt  
9Fb|B  
堆排序: YI05?J}  
~Wy&xs ZH  
package org.rut.util.algorithm.support; f>.A^?  
U:6 J~  
import org.rut.util.algorithm.SortUtil; [U+6Tj,  
fy|ycWW>8  
/** ^Q!qJav  
* @author treeroot 6&/H XqP  
* @since 2006-2-2 p ;E zmz  
* @version 1.0 v~^c-]4I  
*/ ?^]29p_  
public class HeapSort implements SortUtil.Sort{ &atT7m  
ZqKUz5M4  
/* (non-Javadoc) :M" NB+T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #hL<9j  
*/ {Ic~}>w  
public void sort(int[] data) { $nN`K*%  
MaxHeap h=new MaxHeap(); Eq$Q%'5*ua  
h.init(data); R^zTgyr  
for(int i=0;i h.remove(); ]jo^P5\h>  
System.arraycopy(h.queue,1,data,0,data.length); bg.f';C  
} XE8~R5  
L~e\uP  
private static class MaxHeap{ 2q}M1-^  
_4qP0LCa  
void init(int[] data){ =Gsn4>~%n  
this.queue=new int[data.length+1]; W\09h Z6  
for(int i=0;i queue[++size]=data; j" wX7  
fixUp(size); YrAaL"20  
} T' O5> e  
} OiPE,sv  
RqTW$94RD  
private int size=0; Q*wub9  
""`> v`\  
private int[] queue; e*5TZ7.  
QuFcc}{<]  
public int get() { 'G1~\CT  
return queue[1]; nLK%5C  
} jxA`RSY  
O8BxXa@5  
public void remove() { :x e/7-  
SortUtil.swap(queue,1,size--); & sbA:xZBA  
fixDown(1); (lv|-Phc.  
} RFF&-M]  
file://fixdown `P;fD/I  
private void fixDown(int k) { i<<NKv8;  
int j; 4u5^I;4pL  
while ((j = k << 1) <= size) { :ie7HF  
if (j < size %26amp;%26amp; queue[j] j++; CD#:*  
if (queue[k]>queue[j]) file://不用交换 Y9F78=Q  
break; SI_{%~k*B  
SortUtil.swap(queue,j,k); M$O}roOa  
k = j; c-nBB  
} Hbogi1!al|  
} I!bzvPJ]xc  
private void fixUp(int k) { x Lht6%o*  
while (k > 1) { 'A91i  
int j = k >> 1; n"B"Aysz  
if (queue[j]>queue[k]) J;+A G^U<  
break; TbyQ'MbUv  
SortUtil.swap(queue,j,k); 5=CLR  
k = j; nA8]/r1k  
} YpQ/ )fSEV  
} *yAC8\v  
=IBdnEz:M  
} /'U/rjb_h{  
/7Z0|Zw]  
} #5HJW[9  
5A]IiX4Z  
SortUtil: Zf;1U98oC  
(:3rANY|  
package org.rut.util.algorithm; |6LC>'  
;w1?EdaO  
import org.rut.util.algorithm.support.BubbleSort; ':yE5j  
import org.rut.util.algorithm.support.HeapSort; Zyq h  
import org.rut.util.algorithm.support.ImprovedMergeSort; MtOA A  
import org.rut.util.algorithm.support.ImprovedQuickSort; fd >t9.  
import org.rut.util.algorithm.support.InsertSort; = ! D<1<  
import org.rut.util.algorithm.support.MergeSort; H?8uy_Sc  
import org.rut.util.algorithm.support.QuickSort; "Yw-1h`fR  
import org.rut.util.algorithm.support.SelectionSort; kE QT[Lo  
import org.rut.util.algorithm.support.ShellSort; m Nw|S*C  
r.M8#YL  
/** {UT>> *C  
* @author treeroot $?p^ m`t_  
* @since 2006-2-2 RW 23lRA6  
* @version 1.0 jYKs| J)[  
*/ LLOe  
public class SortUtil { )_!t9gn*wr  
public final static int INSERT = 1; fx|$(D@9  
public final static int BUBBLE = 2; l= 5kd.{  
public final static int SELECTION = 3; xy`aR< L  
public final static int SHELL = 4; C/dqCUX:  
public final static int QUICK = 5; lPm'>, }Y  
public final static int IMPROVED_QUICK = 6; _[h1SAJ  
public final static int MERGE = 7; _QCspPT' c  
public final static int IMPROVED_MERGE = 8; ,vP9oY[n  
public final static int HEAP = 9; G`E%uyjG$j  
*g&[?y`UC  
public static void sort(int[] data) { ?bbu^;2*f  
sort(data, IMPROVED_QUICK); ?b, eZ+t  
} 6 )eO%M`  
private static String[] name={ &,Dh*)k  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Bt|S!tEy  
}; z<_{m 4I;  
EOhUr=5~  
private static Sort[] impl=new Sort[]{ b8)>:F  
new InsertSort(), }S'+Ytea  
new BubbleSort(), s9) @$3\  
new SelectionSort(), WQ4:='(  
new ShellSort(), 4A0R07"  
new QuickSort(), e#L/  
new ImprovedQuickSort(), 7dI+aJ  
new MergeSort(), Sj{z  
new ImprovedMergeSort(), ;<0Q<0G  
new HeapSort() bnLvJ]i)  
}; &k(t_~m>  
sJtz{'  
public static String toString(int algorithm){ VkFTIyt  
return name[algorithm-1]; O?NAbxkp  
} lwPK^)|}  
I"*g-ji0  
public static void sort(int[] data, int algorithm) { /HH5Mn*  
impl[algorithm-1].sort(data); (qHI>3tpY  
} T#?KY  
{y=H49  
public static interface Sort { oz%ZEi \bW  
public void sort(int[] data); "XMTj <D  
} lY!`<_Am  
l/;OC  
public static void swap(int[] data, int i, int j) { oH!sJ&"#_  
int temp = data; 4 W}8?&T  
data = data[j]; 4%2QF F @  
data[j] = temp; ohusL9D  
} 2H fP$.  
} wG2lCv`d  
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