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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。 |fTWf}Jx  
插入排序: g3"eEg5NY  
n;+e(ob;;  
package org.rut.util.algorithm.support; XnCrxj  
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import org.rut.util.algorithm.SortUtil; ;?`l1:C5)  
/** ?5yj</W  
* @author treeroot gY=Ry=w9  
* @since 2006-2-2 JMa[Ulz  
* @version 1.0 rDvz2p"R  
*/ ; D a[jFP  
public class InsertSort implements SortUtil.Sort{ hExw}c  
{#Vck\&  
/* (non-Javadoc) 2*<'=*zaQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5/{";k)L+  
*/ 3jG #<4;J  
public void sort(int[] data) { yk<$XNc  
int temp; PiTe/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _ o-lNt+  
} :a#p zEK  
} u|'}a3  
} *w[\(d'T  
J|D$  
} ZKT~\l  
"BAH=ul5E  
冒泡排序: V7qc9Gd@I  
3-T}8VsiP  
package org.rut.util.algorithm.support; 9*lkx#  
5_}e?T&s  
import org.rut.util.algorithm.SortUtil; !Ui"<0[,  
01P ~K|s  
/** :?}U Z#  
* @author treeroot l*+5WrOS  
* @since 2006-2-2 _P]!J~$5  
* @version 1.0 ZJ7<!?6  
*/ xQetAYP`  
public class BubbleSort implements SortUtil.Sort{ |8s)kQ4$  
&K*x[  
/* (non-Javadoc) cx(W{O"Jb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nfV32D|3  
*/ '\iWp?`$  
public void sort(int[] data) { 53w@  
int temp; qXQ/M]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ k;?Oi?]  
if(data[j] SortUtil.swap(data,j,j-1); \f AL:mJ  
} Z_F}Y2-w9  
} ~SW_jiKM  
} }}VB#   
} jD eNCJ  
%%w/;o!c  
} jW G=k#WN  
/ W,K% s]  
选择排序: `S{Blv  
R1%2]?  
package org.rut.util.algorithm.support; {MaFv  
l6C^,xU~IX  
import org.rut.util.algorithm.SortUtil; $j\UD8Hj'-  
<R?_Yjsw  
/** (Wm4JmX%  
* @author treeroot <%2A, Vz"  
* @since 2006-2-2 EpO5 _T_  
* @version 1.0 t#0/_tD  
*/ dK45&JHoW^  
public class SelectionSort implements SortUtil.Sort { q Pc"A!-i  
]-D;t~  
/* 1;4 ] HNI  
* (non-Javadoc) #''q :^EQ  
* rU {E}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CX8tTbuFl  
*/ 0K&\5xXM  
public void sort(int[] data) { Viu+#J;l  
int temp; l-N4RCt h  
for (int i = 0; i < data.length; i++) { 5$T>noD  
int lowIndex = i; r.V< 5xV  
for (int j = data.length - 1; j > i; j--) { $:bU<  
if (data[j] < data[lowIndex]) { RQ1`k,R=  
lowIndex = j; Z !qHL$  
} :.+?v*%;n  
} c QjzI#  
SortUtil.swap(data,i,lowIndex); Wy'H4Rg8  
} O-M4NKl]6  
} ~$zodrS9  
Uv-xP(X  
} :V%XEN)  
UO& p2   
Shell排序: JERWz~n}  
.i7bI2^  
package org.rut.util.algorithm.support; ^r7-|  
 !lf:x  
import org.rut.util.algorithm.SortUtil; LZCziW  
IkU:D"n7  
/** }wJDHgt]-p  
* @author treeroot SX{6L(  
* @since 2006-2-2 ;!CYp; _  
* @version 1.0 ydNcbF%K  
*/ mkCv  f  
public class ShellSort implements SortUtil.Sort{ l+>&-lX'  
?T\m V}  
/* (non-Javadoc) I.<>6ISI@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0#}@- e  
*/ X:*Ut3"  
public void sort(int[] data) { Q &Rj)1!  
for(int i=data.length/2;i>2;i/=2){ Daa2.*  
for(int j=0;j insertSort(data,j,i); NC*h7  
} O^D$ ~ ]  
} qq&G~y  
insertSort(data,0,1); rf%E+bh4  
} ?s<'3I{F`  
dnby&-+T  
/** BVx: JiA  
* @param data %C]K`=vI-  
* @param j .Q pqbp 8  
* @param i HqW|  
*/ T5eXcI0t  
private void insertSort(int[] data, int start, int inc) { X^PR];V:$  
int temp; 0;Y|Ua[G+~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m,e @bJ-  
} QES[/i +  
} V}l >p?  
} |]5g+sd  
])= k";76  
} e ,_b  
|M?yCo  
快速排序: <y(uu(c  
Z#wmEc.}C  
package org.rut.util.algorithm.support; '"H'#%RU  
eCY gi7?  
import org.rut.util.algorithm.SortUtil; > Xq:?}-m2  
cS98%@DR  
/** G[YbgG=9Y  
* @author treeroot K8.=bGyg  
* @since 2006-2-2 $1N_qu  
* @version 1.0 ':71;^zXf  
*/ &Bbs\ ;  
public class QuickSort implements SortUtil.Sort{ vj I>TIy  
{89F*  
/* (non-Javadoc) N\IdZX%u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `J h> 1l  
*/ 1"r6qYN!>  
public void sort(int[] data) { .c'EXuI7),  
quickSort(data,0,data.length-1); u4L&8@  
} Ed3 *fY  
private void quickSort(int[] data,int i,int j){ 7E$ e1=  
int pivotIndex=(i+j)/2; Oo<^~d2=  
file://swap dZ&/Iz  
SortUtil.swap(data,pivotIndex,j); I U/HYBJH  
C,R_` %b%  
int k=partition(data,i-1,j,data[j]); T?W`g> yM  
SortUtil.swap(data,k,j); e,qc7BJzK  
if((k-i)>1) quickSort(data,i,k-1); |1G/J[E  
if((j-k)>1) quickSort(data,k+1,j); O $uXQ.r  
Zqke8q  
} 3&kHAXzM  
/** 9g#L"T=  
* @param data Exox&T  
* @param i ]<mXf~zg  
* @param j _f%Wk>A4  
* @return mh>)N"  
*/ xI}h{AF7  
private int partition(int[] data, int l, int r,int pivot) {  q&0Jl  
do{ LuS] D%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K oPTY^  
SortUtil.swap(data,l,r); RSG\3(  
} O0#wM-M  
while(l SortUtil.swap(data,l,r); +2=N#LM  
return l; [1@ -F+  
} _8b)Xx@5  
_ 97  
} +]/_gz  
\w{x- }  
改进后的快速排序: +rbj%v}Fh  
|:n4t6  
package org.rut.util.algorithm.support; l9XK;0R9  
3!^5a %u  
import org.rut.util.algorithm.SortUtil; _B)LRD+Hj  
w `6qT3v  
/** @a) x^d  
* @author treeroot f_X]2in  
* @since 2006-2-2 IB:Wh;_x  
* @version 1.0 QA\eXnR  
*/ g5/%}8[- 2  
public class ImprovedQuickSort implements SortUtil.Sort { =NwmhV  
dhpEB J  
private static int MAX_STACK_SIZE=4096; pc<")9U%/  
private static int THRESHOLD=10; YbF}(iM  
/* (non-Javadoc) a0OH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1SeDrzLA  
*/ orCD?vlh  
public void sort(int[] data) { "0Uh(9Fv  
int[] stack=new int[MAX_STACK_SIZE]; wy"^a45h  
$A)i}M;uK  
int top=-1; y% =nhV  
int pivot; f m.-*`ax  
int pivotIndex,l,r; o0^'x Vv  
AxLnF(eG  
stack[++top]=0; 7yxZe4~|#  
stack[++top]=data.length-1; 'n% Ac&kk  
 FqAW><  
while(top>0){ QN:gSS{30  
int j=stack[top--]; Ha9A5Ao}0  
int i=stack[top--]; A"FlH:Pn  
7$'%*|C.  
pivotIndex=(i+j)/2; "knSc0 ,u  
pivot=data[pivotIndex]; R:kNAtK  
\](IBI:  
SortUtil.swap(data,pivotIndex,j); pUki!TA  
JS% &ipm  
file://partition kVE% "  
l=i-1; ww82)m8  
r=j; t=J\zyX!  
do{ 2KMLpO&De  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |5S/h{gq  
SortUtil.swap(data,l,r); a@Tn_yX  
} l j*ELy  
while(l SortUtil.swap(data,l,r); y^_ 'g2H  
SortUtil.swap(data,l,j); ,$@nbS{Q]  
%Uybp  
if((l-i)>THRESHOLD){ \dSMF,E  
stack[++top]=i; :D6"h[7  
stack[++top]=l-1; `X]TIMc:Ad  
} aG;6^$H~  
if((j-l)>THRESHOLD){ |xy r6gY  
stack[++top]=l+1; U;o[>{L   
stack[++top]=j; pZp|F  
} qW[p .jN  
]C^D5(t/cd  
} q 1a}o%  
file://new InsertSort().sort(data); 68?oV)fE  
insertSort(data); L+2!Sc,>  
}  ::Y   
/** ~Fv&z'R  
* @param data 9.ZhkvR4A  
*/ HubSmbS1  
private void insertSort(int[] data) { Z\6&5r=  
int temp; pisjfNT`o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JViglO1\  
} t] LCe\#  
} |j53' >N[  
} -Qx:-,.a  
50% |9D0?Y  
} 0:UK)t)3I  
=0 W`tx  
归并排序: ?n)r1m  
rBLkowDP*  
package org.rut.util.algorithm.support; 6=o@X  
f)hs>F  
import org.rut.util.algorithm.SortUtil; flp<QT  
D7cOEL<  
/** z!27#gbL  
* @author treeroot Gs%IZo_  
* @since 2006-2-2 1><\3+8  
* @version 1.0 j(/Bf m  
*/ G%~=hEK0  
public class MergeSort implements SortUtil.Sort{ .kh%66:  
B$qmXA)ze  
/* (non-Javadoc) )iadu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .E:[ \H"  
*/ J,;[n*s  
public void sort(int[] data) { ^Cb7R/R3  
int[] temp=new int[data.length]; %0T/>:1[E  
mergeSort(data,temp,0,data.length-1); $,"{g<*k;  
} 3`_jNPV1  
bf2R15|t5`  
private void mergeSort(int[] data,int[] temp,int l,int r){ xExy?5H7  
int mid=(l+r)/2; q+2yp&zF  
if(l==r) return ; NfcY30}:  
mergeSort(data,temp,l,mid); 7><ne|%  
mergeSort(data,temp,mid+1,r); CK[2duf^~  
for(int i=l;i<=r;i++){ B;t U+36nM  
temp=data; Cd)e_&  
} Et~b^8$>  
int i1=l; mN3}wJ}J  
int i2=mid+1; h+F@apUS  
for(int cur=l;cur<=r;cur++){ M$ g%kqa  
if(i1==mid+1) (;YO]U4  
data[cur]=temp[i2++]; jq(3y|6,  
else if(i2>r) fU^B 3S6X  
data[cur]=temp[i1++]; ^c{}G<U^  
else if(temp[i1] data[cur]=temp[i1++]; O-B~~$g  
else $@d`Kz;  
data[cur]=temp[i2++]; `EVTlq@<  
} j-|YE?AA  
} GXB4&Q!C  
RL/~E xYC  
} BX$t |t;!m  
Y W_E,A>h  
改进后的归并排序: <$Q\vCR  
4S|! iOY  
package org.rut.util.algorithm.support; ])h={gI  
G?12?2  
import org.rut.util.algorithm.SortUtil; w] LN(o:  
Frn#?n)S9  
/** 9PhdoREb  
* @author treeroot @<Au|l`  
* @since 2006-2-2 Ls#pe  
* @version 1.0 i.2O~30ST  
*/ ~L Gkc t  
public class ImprovedMergeSort implements SortUtil.Sort { ElAJR4'{*i  
)%%RI_J T  
private static final int THRESHOLD = 10; cAC2Xq  
|Axg}Q|  
/* KTxdZt  
* (non-Javadoc) on(P  
* , M$*c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SPW @TF1  
*/ d_#\^!9  
public void sort(int[] data) { m>2b %GTh  
int[] temp=new int[data.length]; d$)'?Sf]h  
mergeSort(data,temp,0,data.length-1); {n%-^9b1{&  
} |o~<Ti6]  
*/xI#G,O+  
private void mergeSort(int[] data, int[] temp, int l, int r) { e3YZ-w^W~h  
int i, j, k; VHVU*6_w  
int mid = (l + r) / 2; <K:?<F  
if (l == r) b6_*ljM  
return; ncJ}h\:Sk  
if ((mid - l) >= THRESHOLD) zNRoFz.  
mergeSort(data, temp, l, mid); lqA U5K{wQ  
else USu/Y29  
insertSort(data, l, mid - l + 1); (FZL>  
if ((r - mid) > THRESHOLD) 8h9t8?  
mergeSort(data, temp, mid + 1, r); a*&P>Lwe7&  
else Q_/{TE/sO5  
insertSort(data, mid + 1, r - mid); *2crhI*@>  
>JS\H6  
for (i = l; i <= mid; i++) { {y<[1Pms  
temp = data; L5%~H?K(  
} >`= '~y8  
for (j = 1; j <= r - mid; j++) { FOpOS?Cr'  
temp[r - j + 1] = data[j + mid]; PYr#vOH  
} E*IkI))X0  
int a = temp[l]; Vi`+2%4  
int b = temp[r]; gwQL9 UYx  
for (i = l, j = r, k = l; k <= r; k++) { ,HS\(Z  
if (a < b) { 1YR;dn  
data[k] = temp[i++]; ^ef:cS$;  
a = temp; K @"m0  
} else { `m<l8'g  
data[k] = temp[j--]; Cca( oV  
b = temp[j]; N J:]jd  
} k#`.!yI,  
} O]w&uim  
} W5}.WFu  
jEklf0Z  
/** hbR;zV|US  
* @param data NI=t)[\F  
* @param l <Sm -Z,|  
* @param i MUz.-YRt  
*/ oLk>|J  
private void insertSort(int[] data, int start, int len) { a}`4BMi3  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); UY j  
} JI )+  
} 1 Y@6oT  
}  \A:m<::  
} B:ddlxT $  
h0 Acpd2  
堆排序: nXK"BYe  
5ejdf  
package org.rut.util.algorithm.support; *gHOH!K,S  
&PD4+%!  
import org.rut.util.algorithm.SortUtil; IvetQ+  
+Es3iE @  
/** N<Rb<p%  
* @author treeroot Rg<y8~|'}  
* @since 2006-2-2 A)040n  
* @version 1.0 G hLgV  
*/ C2AP   
public class HeapSort implements SortUtil.Sort{ V!c{%zd  
 {"y{V  
/* (non-Javadoc) QV+('  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )gvX eJ  
*/ rj$u_y3S*  
public void sort(int[] data) { =r+u!~%@''  
MaxHeap h=new MaxHeap(); g63:WX-\  
h.init(data); W2tIt&{  
for(int i=0;i h.remove(); `>rdn*B  
System.arraycopy(h.queue,1,data,0,data.length); RoM'+1nP:#  
} Y {Klwn   
+ }(  
private static class MaxHeap{ z|}Anc[\  
eL^,-3JA(]  
void init(int[] data){ x*i5g`jx  
this.queue=new int[data.length+1]; ;W?e@ Lgxk  
for(int i=0;i queue[++size]=data; e x $d~  
fixUp(size); &xr?yd  
} )Be}Ev#)Zx  
} IyOujdKa  
: i3-7k  
private int size=0; -}2q-  
CeR4's7  
private int[] queue; #E5#{bra  
Vj0`*nC)/  
public int get() { $b\Gl=YX^  
return queue[1]; S#!PDg  
} j!&g:{ e  
+;`Cm.Iu  
public void remove() { /QHvwaW[  
SortUtil.swap(queue,1,size--); o&rejj#  
fixDown(1); }pPxN@X  
} Kx*;!3-V$  
file://fixdown W=mh*G3y  
private void fixDown(int k) { W3{k{~  
int j; yXc/Nl%  
while ((j = k << 1) <= size) { :2 ?dl:l  
if (j < size %26amp;%26amp; queue[j] j++; $Xk1'AzB8  
if (queue[k]>queue[j]) file://不用交换 )eY3[>`  
break; cliP+#  
SortUtil.swap(queue,j,k); n1DD+@  
k = j; n0@e%=H)I  
} L\nWhmwl  
} tLS5yT/  
private void fixUp(int k) { L2P~moVIi  
while (k > 1) { ED[PP2[/  
int j = k >> 1; pb$U~TvzhM  
if (queue[j]>queue[k]) LEc%BQx  
break; 1 W2AE?  
SortUtil.swap(queue,j,k); Nk86Y2h  
k = j; ?5'UrqYSW  
} 3tS~/o+]  
} "^zxq5u  
Z)|*mJ  
} E$4\Yc)(AL  
h?bm1e5kE  
} e}(ws~.  
%1@+pf/  
SortUtil: GasIOPzK  
d;:+Xd`  
package org.rut.util.algorithm; b0tr)>d  
;-n+=@]7  
import org.rut.util.algorithm.support.BubbleSort; mxq'A  
import org.rut.util.algorithm.support.HeapSort; 3Q~ng2Wv%  
import org.rut.util.algorithm.support.ImprovedMergeSort; puL1A?Y8UM  
import org.rut.util.algorithm.support.ImprovedQuickSort; |0B h  
import org.rut.util.algorithm.support.InsertSort; 0kQAT #  
import org.rut.util.algorithm.support.MergeSort; N02N w(pi  
import org.rut.util.algorithm.support.QuickSort; u <%,Ql  
import org.rut.util.algorithm.support.SelectionSort; d.% Vm&3  
import org.rut.util.algorithm.support.ShellSort; fJd!;ur)0  
!R[o6V5T  
/** 6@ET3v  
* @author treeroot v#(wc +[  
* @since 2006-2-2 N#6&t8;kTC  
* @version 1.0 2y,NT|jp  
*/ mj%Iow.  
public class SortUtil { )e4nKh],  
public final static int INSERT = 1; n_v|fxF1  
public final static int BUBBLE = 2; 9$)TAI&P  
public final static int SELECTION = 3; oslrv7EK  
public final static int SHELL = 4; IpB0~`7YI  
public final static int QUICK = 5; |mc!v*O  
public final static int IMPROVED_QUICK = 6; Y2yVl+  
public final static int MERGE = 7; +[V?3Gdb  
public final static int IMPROVED_MERGE = 8; xQm!  
public final static int HEAP = 9; enO5XsIc  
)`,3/i9C$  
public static void sort(int[] data) { v /G,  
sort(data, IMPROVED_QUICK); 1$q SbQ  
} {E@Vh  
private static String[] name={ `V$i*{c:#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" FlrLXTx0  
}; My5h;N@C  
BQ)zm  
private static Sort[] impl=new Sort[]{ pI( OI>~3  
new InsertSort(), )4D |sN  
new BubbleSort(), AHIk7[w  
new SelectionSort(), yw{GO([ZQ  
new ShellSort(), hJkIFyQ{j  
new QuickSort(), I yL2{5  
new ImprovedQuickSort(), ^ bexXYh  
new MergeSort(), W.HM!HQp  
new ImprovedMergeSort(), ,+oQ 5c(f  
new HeapSort() Hb#8?{  
}; Mf<P ms\F  
<FRYt-+  
public static String toString(int algorithm){ bfQ+}|;  
return name[algorithm-1]; WDP$w( M  
} t1 OnA#]/_  
*<i { Mb Q  
public static void sort(int[] data, int algorithm) { vc^qpOk  
impl[algorithm-1].sort(data); SYw>P1  
} u1~H1 ]Ii  
ss-{l+Z5  
public static interface Sort { "/S-+Ufn  
public void sort(int[] data); 2pQ zT  
} 38 tRb"3zP  
dK#:io[Nz  
public static void swap(int[] data, int i, int j) { HKP<=<8/O  
int temp = data; xeIt7b?#  
data = data[j]; 0%<Fc9#  
data[j] = temp; ^}a..@|%W  
} ^I5k+cL  
} ol^OvG:TQ  
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