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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。 O\h%ZLjfO  
插入排序: m= %KaRI  
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package org.rut.util.algorithm.support; !Z0S@]C  
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import org.rut.util.algorithm.SortUtil; 8t |?b  
/** !vuun |  
* @author treeroot @~FJlG(n  
* @since 2006-2-2 R_"6E8N  
* @version 1.0 D`U,T& @  
*/ qC q?`0&#  
public class InsertSort implements SortUtil.Sort{ n*Hx"2XF  
9%riB/vkrF  
/* (non-Javadoc) S'`RP2P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k#Qjm9V  
*/ h?vny->uJ  
public void sort(int[] data) { <- R%  
int temp; 'C@yJf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =%|f-x  
} Z A}!Rzo  
} i8%Z(@_`  
} |W*2L] &  
j$4lyDfD  
} SJE!14|e  
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冒泡排序: UJjtDV3@_g  
JURg=r]LI  
package org.rut.util.algorithm.support; }N:QB}7'_  
y,`q6(&  
import org.rut.util.algorithm.SortUtil; ygd*zy9  
b#n  
/** U !%IC7@  
* @author treeroot >f D%lq;  
* @since 2006-2-2 Ex6Kxd}8  
* @version 1.0 R<^E?FI   
*/ <3Rq!w/  
public class BubbleSort implements SortUtil.Sort{ q(BRJ(  
;Mr Q1  
/* (non-Javadoc) OaY]}4tI$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3h6,x0AG  
*/ Equ%6x  
public void sort(int[] data) { TN/&^/  
int temp; /K;AbE  
for(int i=0;i for(int j=data.length-1;j>i;j--){ M&e=LV  
if(data[j] SortUtil.swap(data,j,j-1); ony;U#^T  
} pP%+@;  
} WGo ryvEx  
} ?P}) Qa  
} X>Z83qV5d!  
IvI;Q0E-3  
} qat'Vj,  
~/Y8wxg  
选择排序: '1zC|:,  
}:*?w>=  
package org.rut.util.algorithm.support; Xd.y or  
COd~H  
import org.rut.util.algorithm.SortUtil; ES#q/yab5  
rMJ4w['J=  
/** 24f N3  
* @author treeroot ~se ;L  
* @since 2006-2-2 mA #^Pv*  
* @version 1.0 Djf~8q V!  
*/ "V,dH%&j  
public class SelectionSort implements SortUtil.Sort { bNoZ{ 7  
gL1r"&^L  
/* QwuSo{G  
* (non-Javadoc) Ko "JH=<  
* \?^ EFA+;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C*Q x  
*/ s}DNu<"g  
public void sort(int[] data) { NkQain9  
int temp; hJX;/~L  
for (int i = 0; i < data.length; i++) { % QaWg2Y=  
int lowIndex = i; 9gZS )MZ  
for (int j = data.length - 1; j > i; j--) { !_?HSDAj"n  
if (data[j] < data[lowIndex]) { z[JM ]Wy  
lowIndex = j; }( WUZ^L  
} V3axwg_  
} @Q:?,  
SortUtil.swap(data,i,lowIndex); #Zn+-Ih  
} Rb <{o8  
} , _xJ9_  
k;.<DN  
} UYpln[S  
rWBgYh  
Shell排序: $<f+CtD4  
ePxf.U  
package org.rut.util.algorithm.support; Z eWst w7  
Xg}~\|n  
import org.rut.util.algorithm.SortUtil; @d|]BqQ4jh  
!DKl:8mx4  
/** @VsK7Eo  
* @author treeroot fi6_yFl  
* @since 2006-2-2 6X$\:>  
* @version 1.0 XLm@, A[  
*/ w h^I|D?"  
public class ShellSort implements SortUtil.Sort{ =J )(=,  
If|i `,Iy  
/* (non-Javadoc) 3W3d $  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `?T8NK  
*/ lPz5.(5'  
public void sort(int[] data) { =.9tRq  
for(int i=data.length/2;i>2;i/=2){ 6|1#Prj  
for(int j=0;j insertSort(data,j,i); ~SEIIq  
} ~$bQ;`,L  
} ,qhv(  
insertSort(data,0,1); 24Htr/lPCT  
} 1 EHNg<J(  
ZaFqGcS~  
/** _3gF~qr  
* @param data 11JO[  
* @param j a0  w  
* @param i HGW;]8xl  
*/ ,Ne v7X[0  
private void insertSort(int[] data, int start, int inc) { {1GIiP-U  
int temp; XP65  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ";59,\6  
} u?8e>a  
} ]8opI\  
} -} +PE 4fh  
lpefOnO[  
} D&8*4>  
1{wOjq(4  
快速排序: bvo }b-]E  
cp+eh  
package org.rut.util.algorithm.support; @'S !G"\  
}$s._)a  
import org.rut.util.algorithm.SortUtil; r}t%DH  
uC1v^!D  
/** Y F W0  
* @author treeroot %W$?*Tm  
* @since 2006-2-2 ?^: xNRE$j  
* @version 1.0 1;+(HB  
*/ q5~fU$ ,  
public class QuickSort implements SortUtil.Sort{ vu)V:y  
DFqVZ   
/* (non-Javadoc) nZUBblRJ)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h,'m*@Eg  
*/ }sGH}n<9*  
public void sort(int[] data) { /?:]f  
quickSort(data,0,data.length-1); p5=VGKp  
} lb#`f,r>  
private void quickSort(int[] data,int i,int j){ ,An*w_  
int pivotIndex=(i+j)/2; v>mr  
file://swap |Oe$)(`|h  
SortUtil.swap(data,pivotIndex,j); p"J\+R  
.{k^ tf4  
int k=partition(data,i-1,j,data[j]); Xdc>Z\0V  
SortUtil.swap(data,k,j); 26c1Yl,DMn  
if((k-i)>1) quickSort(data,i,k-1); C8 2lT_7"  
if((j-k)>1) quickSort(data,k+1,j); [Uu!:SZ  
,vUMy&AV  
} ed7Hz#Qc  
/** qL68/7:A  
* @param data tPho4,x$  
* @param i A*hc w  
* @param j `]g}M,  
* @return 2<5s0GT'/  
*/ NU|T`gP  
private int partition(int[] data, int l, int r,int pivot) { "@E(}z'sM  
do{ =nN&8vRH  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |70L h+  
SortUtil.swap(data,l,r); v\ Xk6k  
} <lVW; l7  
while(l SortUtil.swap(data,l,r); 0@8EIQxK"  
return l; ||k^pzj%  
} 4 5\%2un  
_zj}i1!E"  
} d[I}+%{[  
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改进后的快速排序: FA;uu\  
F>A&L8  
package org.rut.util.algorithm.support; kculHIa\.  
nA^UF_rD-  
import org.rut.util.algorithm.SortUtil; Y>[u(q&09O  
H?axlRmw3  
/** ^ $t7p 1  
* @author treeroot `;!v<@:i2  
* @since 2006-2-2 9l :Bum)9  
* @version 1.0 <CUe"WbE)  
*/ #x|h@(y|  
public class ImprovedQuickSort implements SortUtil.Sort { NEh5    
efF>kcIC  
private static int MAX_STACK_SIZE=4096; O486:tF  
private static int THRESHOLD=10; *.9.BD9  
/* (non-Javadoc) #~^Y2-C#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I8 {2cM;  
*/ j*jO809%^  
public void sort(int[] data) { I 0}+}{M:  
int[] stack=new int[MAX_STACK_SIZE]; gyW##M@{  
n/5)}( }K  
int top=-1; CvtG  
int pivot; q@x{6zj  
int pivotIndex,l,r; -?WhJ.U  
we&g9j'  
stack[++top]=0; 9L'R;H?L  
stack[++top]=data.length-1; |JW-P`tL0  
JY tM1d  
while(top>0){ Pz1[ b$%  
int j=stack[top--]; v1Lu.JQC$  
int i=stack[top--]; (s`yMUC+  
/a$RJ6t&3  
pivotIndex=(i+j)/2; wg[D*a  
pivot=data[pivotIndex]; |PED8K:rU  
RWi~34r  
SortUtil.swap(data,pivotIndex,j); :jq   
3yu{Q z5y,  
file://partition S:GX!6>  
l=i-1; +[ 944n  
r=j; D-BWgK  
do{ ^w XXx=Xf  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )Aky:kM$  
SortUtil.swap(data,l,r); fK|F`F2V  
} *gC6yQ2?  
while(l SortUtil.swap(data,l,r); 6A]Ia4PL  
SortUtil.swap(data,l,j); K?q1I<94  
S 5Q$dAL  
if((l-i)>THRESHOLD){ 4=>4fia&D  
stack[++top]=i; Py[Z9KLX  
stack[++top]=l-1; ^ cn)eA  
} ` AA[k  
if((j-l)>THRESHOLD){ =%YU~  
stack[++top]=l+1; V[Jd1T  
stack[++top]=j; 1e>,QX  
}  `Up Zk?k  
{g *kr1JM  
} ~',<7eW  
file://new InsertSort().sort(data); ~E=.*: 5(  
insertSort(data); (!U5B Hnd  
} ?2;r#)  
/** zF2GW  
* @param data F~dq7 AS  
*/ <=*xwI&q  
private void insertSort(int[] data) { +`==US34  
int temp; 0FF x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zUqt^_  
} t/K<fy 6  
} eM*@zo<-  
} j|&?BBa9  
shwKB 5  
} H1'`* }V  
~bCn%r2  
归并排序: $g55wGF  
n; 0bVVMV  
package org.rut.util.algorithm.support; a(Bo.T<2@  
Wm nsD!  
import org.rut.util.algorithm.SortUtil; mB.kV Ve0  
`n]y"rj'  
/** 88 *K  
* @author treeroot *ws!8-)fH  
* @since 2006-2-2 ;N4b~k)  
* @version 1.0 y8Bi5Ae,+1  
*/ }MDuQP]  
public class MergeSort implements SortUtil.Sort{ Kv[,!P"Y  
qHfs*MBJ%  
/* (non-Javadoc) *BYSfcX6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /s>ZT8vaAs  
*/ sY=fS2b#)  
public void sort(int[] data) { ;K[`o/#4"  
int[] temp=new int[data.length]; Q9N=yz  
mergeSort(data,temp,0,data.length-1); 'Lft\.C  
} Uc6BI$Fmz  
jZcjiOX  
private void mergeSort(int[] data,int[] temp,int l,int r){ g_}r)CgG|  
int mid=(l+r)/2; `Njv#K} U  
if(l==r) return ; !Jw   
mergeSort(data,temp,l,mid); Yz0ruhEMk  
mergeSort(data,temp,mid+1,r); !Re/W ykY  
for(int i=l;i<=r;i++){ ,>n 4 `A  
temp=data; N0h"EV[  
} q#-szZQ  
int i1=l; R ;^[4<&  
int i2=mid+1; R/M:~h~F!  
for(int cur=l;cur<=r;cur++){ twqjaFA>  
if(i1==mid+1) BlS0I%SN  
data[cur]=temp[i2++]; nn"!x|c  
else if(i2>r) AA9OElCa  
data[cur]=temp[i1++]; : 2?J#/o  
else if(temp[i1] data[cur]=temp[i1++]; <L@0w8i`  
else v6 DN:!&  
data[cur]=temp[i2++]; ` !HGM>  
} LMWcF'l  
} 9}Tf9>qP>M  
,ijgqEN  
} W$@q ~/E  
*usfJ-  
改进后的归并排序: _JA.~edqM  
\Nu(+G?e  
package org.rut.util.algorithm.support; |<\L B  
KUVsCmiT  
import org.rut.util.algorithm.SortUtil; gEtD qq~y@  
"xlf6pm%  
/** *TA${$K  
* @author treeroot !m rB+<:  
* @since 2006-2-2 N\Bygjw|  
* @version 1.0 o;mXk2  
*/ Zgo^M,g  
public class ImprovedMergeSort implements SortUtil.Sort { JY#IeNL  
vbmSbZ"y  
private static final int THRESHOLD = 10; fR}|CP  
LWc}j`Wd  
/* _r5Q%8J  
* (non-Javadoc) Gd`qZqx#  
* )JTh=w4n|z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nI%0u<=d  
*/ ;Br8\2=$  
public void sort(int[] data) { {j[[E/8N!y  
int[] temp=new int[data.length]; g.X?wyg5  
mergeSort(data,temp,0,data.length-1); =Z iyT$p  
} ;g: TsYwM  
za'Eom-<u  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7rc^-!k  
int i, j, k; dfGdY"&  
int mid = (l + r) / 2; zTBr<:  
if (l == r) <DiD8")4  
return; N VzR2  
if ((mid - l) >= THRESHOLD) e~c;wP~cO  
mergeSort(data, temp, l, mid); v I@Wuu:  
else ?7^H1L  
insertSort(data, l, mid - l + 1); %xf6U>T  
if ((r - mid) > THRESHOLD) ^<$d Tr'  
mergeSort(data, temp, mid + 1, r); ,IxAt&kN  
else q"'^W<i  
insertSort(data, mid + 1, r - mid); zuWj@YG\.  
xj)*K%re  
for (i = l; i <= mid; i++) { ,:G.V  
temp = data; 3k5OYUk  
} "8J$7g@n@  
for (j = 1; j <= r - mid; j++) {  |X`xJL  
temp[r - j + 1] = data[j + mid]; :#"gQ^YNp  
} /}r%DND'  
int a = temp[l]; =;0#F&  
int b = temp[r]; s%>>E!Qi_  
for (i = l, j = r, k = l; k <= r; k++) { T.GY  
if (a < b) { M5HKRLt  
data[k] = temp[i++]; *f$mSI=  
a = temp; f GE+DjeA  
} else { Y.3]vno?X  
data[k] = temp[j--]; Wu<  
b = temp[j]; 97e fWYj  
} B%Dy;zdWd/  
} lz EF^6I  
} $:s1x\ol  
u}D.yI8  
/** bQow,vf  
* @param data ?3kfh R  
* @param l K5z*DYT  
* @param i y. @7aT5  
*/ (EIdw\  
private void insertSort(int[] data, int start, int len) { 9`i=kp  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); s<H0ka@  
} K& <|94_k  
} ]y@9 z b  
} L{ ?& .iA  
} kYl$V =  
mfQQ<Q@  
堆排序: 2I(0EBW  
,Ww)>O+  
package org.rut.util.algorithm.support; -RVwPY  
"2}04b|"  
import org.rut.util.algorithm.SortUtil; ;FQAL@"Yj  
`+1+0?9  
/** 9 bYoWw  
* @author treeroot *TVr| to  
* @since 2006-2-2 '0GCaL*Sd  
* @version 1.0 pvQw+jX  
*/ u1/4WYJeJ  
public class HeapSort implements SortUtil.Sort{ :h=];^/E  
2)h i(  
/* (non-Javadoc) &Hb6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *L%HH@] %_  
*/ F(^vD_G  
public void sort(int[] data) { oqB(l[%z2  
MaxHeap h=new MaxHeap(); JGX E{FT  
h.init(data); $`.7XD}  
for(int i=0;i h.remove(); DbP!wU lqR  
System.arraycopy(h.queue,1,data,0,data.length); mEv<r6qDT  
} VmHok  
N\l\ M  
private static class MaxHeap{ _N$3c<dY'  
z 3fS+x:E{  
void init(int[] data){ .slA }  
this.queue=new int[data.length+1]; c<wsWs 4V  
for(int i=0;i queue[++size]=data; r#JE7uneT  
fixUp(size); )9 5&-Hs  
} {'E%SIRZ)  
} 8]]uk=P  
"n," >  
private int size=0; xmb]L:4F  
IkFrzw p  
private int[] queue; v*<hE>J0  
Mg W0 ).  
public int get() { (BEGt '7  
return queue[1]; O&V}T#8n  
} O;9u1,%w  
*?Nrx=O*  
public void remove() { MzL^u8  
SortUtil.swap(queue,1,size--); |)* K#%j  
fixDown(1); f)l:^/WP+  
} 8s-y+M@.  
file://fixdown  msM  
private void fixDown(int k) { "6 |j 0?Q  
int j; d }=fJ  
while ((j = k << 1) <= size) { *%7[{Loz  
if (j < size %26amp;%26amp; queue[j] j++; P{i\x#  
if (queue[k]>queue[j]) file://不用交换 X xcY  
break; !qS~YA  
SortUtil.swap(queue,j,k); pYa8iQ`6U;  
k = j; [^ $nt  
} 5,})x]'x  
} ^.p({6H  
private void fixUp(int k) { .LhIB?  
while (k > 1) { u)Y~+ [Q  
int j = k >> 1; O`Er*-O  
if (queue[j]>queue[k]) :f G5?])  
break; LQ`s>q  
SortUtil.swap(queue,j,k); #(F/P!qk  
k = j; 4='Xhm  
} t'|A0r$  
} dIg/g~ t"  
jzI70+E  
} >!848J  
rn $a)^!  
} y<0zAsT  
?;zu>4f|  
SortUtil: a\>+!Vq  
n/6#rj^$  
package org.rut.util.algorithm; NY 756B*  
Y<-h#_  
import org.rut.util.algorithm.support.BubbleSort; FeoI+K A  
import org.rut.util.algorithm.support.HeapSort; jj_z#6{  
import org.rut.util.algorithm.support.ImprovedMergeSort; *`Swv`  
import org.rut.util.algorithm.support.ImprovedQuickSort; 4l7TrCB  
import org.rut.util.algorithm.support.InsertSort; bc=,$  
import org.rut.util.algorithm.support.MergeSort; g5M=$y/H  
import org.rut.util.algorithm.support.QuickSort; \@;$xdA$  
import org.rut.util.algorithm.support.SelectionSort; 45. -P  
import org.rut.util.algorithm.support.ShellSort; v_mk{  
`qnp   
/** G d~ v _  
* @author treeroot %c"PMTq(  
* @since 2006-2-2 pFgpAxl  
* @version 1.0 "BT*9N=|  
*/ _HF66)X7  
public class SortUtil { s!,m,l[P  
public final static int INSERT = 1; CX?q%o2b  
public final static int BUBBLE = 2; 3 9to5 s,  
public final static int SELECTION = 3; 6D|[3rXr  
public final static int SHELL = 4; 1/+d@s#t  
public final static int QUICK = 5;  9uR+  
public final static int IMPROVED_QUICK = 6; hb#Nm6  
public final static int MERGE = 7; LvtHWt  
public final static int IMPROVED_MERGE = 8; U{i xok  
public final static int HEAP = 9; Wip@MGtJ  
E! d?@Xr@  
public static void sort(int[] data) { q\s"B.(G"  
sort(data, IMPROVED_QUICK); 2 j.6  
} :No`+X[Kq  
private static String[] name={ DmU,}]#:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >RJjm&M  
}; 7irpD7P>  
-fpe  
private static Sort[] impl=new Sort[]{ H3-(.l[!b)  
new InsertSort(), ^Ej$o@PH  
new BubbleSort(), jq%%|J.x  
new SelectionSort(), %"-bG'Yc  
new ShellSort(), <G|i!Pm  
new QuickSort(), j5m KJC  
new ImprovedQuickSort(), !q\MXS($#u  
new MergeSort(), ]QKo>7%[  
new ImprovedMergeSort(), YBh|\  
new HeapSort() )U12Rshl  
}; >[}lC7 z,  
R !g'zS'  
public static String toString(int algorithm){ GWFF.Mo^  
return name[algorithm-1]; yq.<,b=87  
} f~Y;ZvB  
4`yE'%6.}  
public static void sort(int[] data, int algorithm) { ezimQ  
impl[algorithm-1].sort(data); ! Gob `# r  
} ]1hyvm3  
qm^|7m^  
public static interface Sort { O6*2oUKqK  
public void sort(int[] data); 8;6j  
} GuK3EM*_  
P5Lb)9_Jw  
public static void swap(int[] data, int i, int j) { Zt_~Zxn3  
int temp = data; (4o<U%3kGq  
data = data[j]; &!P' M  
data[j] = temp; X*cDn.(I  
} 6/Iq@BZ&  
} E{;F4wT_@  
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