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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。  EHk$,bM  
插入排序: "X \Yp_g  
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package org.rut.util.algorithm.support; a[@Y >  
rk &ME#<r  
import org.rut.util.algorithm.SortUtil; 7\[)5j  
/** u{LtyDnik  
* @author treeroot ;*njS1@  
* @since 2006-2-2 YT}ZLx  
* @version 1.0 N^4CA@'{  
*/ 1'f&  
public class InsertSort implements SortUtil.Sort{ @ )Nw>/; o  
D-LQQ{!D5  
/* (non-Javadoc) 2hsRYh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1xjWD30  
*/ W#kd[Wi  
public void sort(int[] data) { ~- eB  
int temp; TlD^EJG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #@L5yy2  
} ?D;7ut$~  
} 13fyg7^JP  
} SvQ!n4 $  
= ( 4l  
} =rA]kGx  
HT7I~]W  
冒泡排序: Dg*'n  
eh}|Wd7J  
package org.rut.util.algorithm.support; 2`J#)f|  
`*3;sq%`  
import org.rut.util.algorithm.SortUtil; Zs2;VW4RW  
CbFO9q  
/** Yf_/c*t\5  
* @author treeroot Cd|rDa  
* @since 2006-2-2 9r> iP L2H  
* @version 1.0 $}B&u)  
*/ o)+C4f[G4  
public class BubbleSort implements SortUtil.Sort{ gts09{"}Y  
b9VI(s>  
/* (non-Javadoc) a fLE9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /9o6R:B  
*/ V/tl-;W  
public void sort(int[] data) { JA% y{Wb  
int temp; <Ok7 -:OxA  
for(int i=0;i for(int j=data.length-1;j>i;j--){ jT`u!CwdT  
if(data[j] SortUtil.swap(data,j,j-1); ; W$.>*O  
} .Hg{$SAC(w  
} KQ ^E\,@o  
} GJ:oUi  
} -$I$zo  
#vc!SI  
} 'p)DJUwt  
&5*t*tI  
选择排序: Fb ~h{  
mR$0Ij/v  
package org.rut.util.algorithm.support; ,YRBYK:  
$."F z x  
import org.rut.util.algorithm.SortUtil; E85TCS 1  
SNf~%B?`L  
/** 58R.`5B  
* @author treeroot Gp=V%w\FDW  
* @since 2006-2-2 9%2h e)Yqc  
* @version 1.0 O&sUPv  
*/ iFZ.a.NDc  
public class SelectionSort implements SortUtil.Sort { $ago  
.g94|P  
/* T8^l}Y B  
* (non-Javadoc) &'Xgf!x  
* v1/Y0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n4.\}%=z  
*/ aGAr24]y  
public void sort(int[] data) { ;p87^:  
int temp; g ;X K3R  
for (int i = 0; i < data.length; i++) { @'y8* _  
int lowIndex = i; At !@Rc  
for (int j = data.length - 1; j > i; j--) { &q M8)2Y  
if (data[j] < data[lowIndex]) { (EH}lh }%  
lowIndex = j; ?!.J 0q  
} _C19eW'  
} 40z1Qkmaey  
SortUtil.swap(data,i,lowIndex);  x$FcF8  
} 7 0EH~  
} K[x=knFO  
$LcMG,8%_  
} n/e,jw  
y qK*E*  
Shell排序: \GKR(~f  
qn'TIE.  
package org.rut.util.algorithm.support; P@% L.y B  
&.PAIe.  
import org.rut.util.algorithm.SortUtil; J*m7 d4^  
Z?WVSJUVf  
/** 3{$>-d  
* @author treeroot G[u{! 2RS  
* @since 2006-2-2 b `bg`}x  
* @version 1.0 @VyNe(U  
*/ `wr*@/P  
public class ShellSort implements SortUtil.Sort{ -BWWaL  
ej1WkaR8  
/* (non-Javadoc) 7xR:\FBa^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =kCiJ8q|  
*/ <fA}_BH%]  
public void sort(int[] data) { _>r (T4}]  
for(int i=data.length/2;i>2;i/=2){ P% 8U  
for(int j=0;j insertSort(data,j,i); InRcIQT  
} Mm1>g~o  
} }SyK)W5Y  
insertSort(data,0,1); 4W<[& )7  
} :nfy=*M#  
 *I}_g4  
/** 2izBB,# "  
* @param data bH:C/P<x  
* @param j 73_-7'^mQ  
* @param i V|*3*W  
*/ 5PP^w~n  
private void insertSort(int[] data, int start, int inc) { g@pK9R%wH<  
int temp; T)Q_dF.N  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >6IUle>z  
} -KfMK N~  
} 91DevizXx  
} } :gi<#-:G  
=kzHZc  
} ,]y_[]636  
!f}D*8\f  
快速排序: ;ZMIYFXRqh  
'-$cvH7_  
package org.rut.util.algorithm.support; %*Vr}@BA)  
Hw6 2'%  
import org.rut.util.algorithm.SortUtil; 3II*NANeg  
= H}x  
/** @x;(yqOb  
* @author treeroot rV?@Kgxi  
* @since 2006-2-2 Vs Z7 n~e  
* @version 1.0 77wod}h!:  
*/ \'|t>|zhp  
public class QuickSort implements SortUtil.Sort{ :@@m'zF<;  
mX?t|:[b  
/* (non-Javadoc) XN{zl*`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a:4!z;2 |  
*/ i CB:p  
public void sort(int[] data) { !1UZ<hq  
quickSort(data,0,data.length-1); H^vA}F`  
} 4$U^)\06W  
private void quickSort(int[] data,int i,int j){ /;!I.|j  
int pivotIndex=(i+j)/2; Xn>>hzj-x?  
file://swap pRUQMPn (  
SortUtil.swap(data,pivotIndex,j); 6z:/ma^  
SwaPRAF  
int k=partition(data,i-1,j,data[j]); !XM*y  
SortUtil.swap(data,k,j); 1s(i\&B  
if((k-i)>1) quickSort(data,i,k-1); I7#JT?\}  
if((j-k)>1) quickSort(data,k+1,j); d<WNN1f  
o` dQ  
} 6#\:J0  
/** u1d%wOY  
* @param data bf2r8   
* @param i PzhC *" i}  
* @param j ]v?jfy  
* @return AS[j)x!  
*/ CC3M7|eO3  
private int partition(int[] data, int l, int r,int pivot) { \+0l#t$  
do{ I[w5V;>*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8!@}\6qM  
SortUtil.swap(data,l,r); *O\lR-z!k  
} wm9wnAy  
while(l SortUtil.swap(data,l,r); ;:>q;%  
return l; <P@O{Xi+K  
} ! CJ*zZ*  
 3UKd=YsJ  
} Q}a(vlZ  
G)_Zls2 ;  
改进后的快速排序: 1KR4Wq@  
<(V~eo e  
package org.rut.util.algorithm.support; kLpq{GUv:  
WT3g31  
import org.rut.util.algorithm.SortUtil; _N>#/v)Yi  
@ `mke4>_  
/** VWzuV&;P  
* @author treeroot b):aqRwP  
* @since 2006-2-2 ;18u02z^  
* @version 1.0 /Ei e5p  
*/ |2rOV&@l9  
public class ImprovedQuickSort implements SortUtil.Sort { +Yc@<$4  
wjgFe]  
private static int MAX_STACK_SIZE=4096; \'iy(8i  
private static int THRESHOLD=10; ]!a?Lr  
/* (non-Javadoc) 9wO2`e )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /Nob S'd  
*/ v (S h+p  
public void sort(int[] data) { ?,%PemN  
int[] stack=new int[MAX_STACK_SIZE]; whrDw1>(  
W"CG&.  
int top=-1; PAxR?2m{  
int pivot; 'fk6]&-I  
int pivotIndex,l,r; ^\Q%VTM  
ZvO1=* J,  
stack[++top]=0; Y> ~jho  
stack[++top]=data.length-1; {Ve`VV5E  
|`{$Ego:  
while(top>0){ i XGy*#>V  
int j=stack[top--]; OPogH=vf  
int i=stack[top--]; rR#wbDr5  
_{eA8J(A<  
pivotIndex=(i+j)/2; G-;EB  
pivot=data[pivotIndex]; ?du*ITim  
m&be55M;  
SortUtil.swap(data,pivotIndex,j); 3"k n5)x  
 3SPXJa\i  
file://partition P:3o}CB1I  
l=i-1; r}:U'zlC{  
r=j; 5@I/+D  
do{ "}H2dn2n  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a0Fq$  
SortUtil.swap(data,l,r); \ Z5160  
} peOoZdJd  
while(l SortUtil.swap(data,l,r); 5P 5Tgk  
SortUtil.swap(data,l,j); )e6sg]#  
*~b~y7C  
if((l-i)>THRESHOLD){ j#Lj<jX!xR  
stack[++top]=i; FP*kA_z$  
stack[++top]=l-1; FT-=^VA\  
} 9RkNRB)8  
if((j-l)>THRESHOLD){ t)~$p#NS  
stack[++top]=l+1; V{x[^+w7X~  
stack[++top]=j; 3a=\$x@  
} LX=v _}l J  
s~ o\j/  
} 0<fQjXn  
file://new InsertSort().sort(data); BlcsDB =ka  
insertSort(data); YIb7y1\UM  
} kmtkh "  
/** Z5EII[=$o  
* @param data ^gR~~t;@  
*/ }qZ^S9  
private void insertSort(int[] data) { tAujm*|&  
int temp; h]&~yuI>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @,]W  
} I{.t-3hp  
} HW#@e kh  
} L 7LUy$M-<  
. NxskXq)  
} WORRF  
E0DquVrz  
归并排序: Pj{I} 4P`  
=U8+1b  
package org.rut.util.algorithm.support; )a `kL,  
g@Y]$ey%A  
import org.rut.util.algorithm.SortUtil; uf:'"7V7  
K*4ib/'E a  
/** Q:b0!  
* @author treeroot *Ue#Sade  
* @since 2006-2-2 2:e7'}\D.  
* @version 1.0 b' ~WS4xlD  
*/ .0;\cv4}  
public class MergeSort implements SortUtil.Sort{ 5 [4{1v  
Re'3bs:+  
/* (non-Javadoc) soX^$l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q|2*V1"r<2  
*/ t"e%'dFv  
public void sort(int[] data) { U^qS[HM  
int[] temp=new int[data.length]; Ag8lI+ h  
mergeSort(data,temp,0,data.length-1); 1Y~'U =9  
} 8|5+\1!#/)  
6Lg#co}9  
private void mergeSort(int[] data,int[] temp,int l,int r){ X;#Ni}af  
int mid=(l+r)/2; 2t>>08T  
if(l==r) return ; BJ fBY H,M  
mergeSort(data,temp,l,mid); B7o US}M  
mergeSort(data,temp,mid+1,r); 2=1qmQE  
for(int i=l;i<=r;i++){ zTi 8y<}  
temp=data; =5YbK1Q^  
} j X*gw6!  
int i1=l; + [$Td%6  
int i2=mid+1; jyidNPLm4  
for(int cur=l;cur<=r;cur++){ w"O;: `|n  
if(i1==mid+1) |tTcJ\bG  
data[cur]=temp[i2++]; &4l!2  
else if(i2>r) [MKt\(  
data[cur]=temp[i1++]; }h8U.k?v  
else if(temp[i1] data[cur]=temp[i1++]; Lc "{ePFh  
else ZU2D.Kf_:  
data[cur]=temp[i2++]; wnQi5P+  
} s*eM}d.p  
} 'AmA3x)9u  
U#XW}T=|  
} 7_lgo6  
.SOCWznb  
改进后的归并排序: |W&K@g$  
EZ hk(LE  
package org.rut.util.algorithm.support; mGoC8t}iP  
mD*!<<Sw  
import org.rut.util.algorithm.SortUtil; P4c}@Mq3  
!FB2\hiM  
/** 1CV ?  
* @author treeroot 9[`\ZGWD  
* @since 2006-2-2 f2v~: u  
* @version 1.0 (#>Q#Izr  
*/ ,jD-fL/:  
public class ImprovedMergeSort implements SortUtil.Sort { .f!:@fX>=  
G%h+KTw  
private static final int THRESHOLD = 10; 7;?7q  
f3:dn7  
/* RK)ikLgp  
* (non-Javadoc) |I|,6*)xg  
* %+UTs'I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ft iAty0n  
*/ ]I;owk,  
public void sort(int[] data) { o_ [I#PT  
int[] temp=new int[data.length]; yBv4 xKMH  
mergeSort(data,temp,0,data.length-1); NL!xk cXO  
} 0TiDQ4}i[  
GpR,n2  
private void mergeSort(int[] data, int[] temp, int l, int r) { 6Yqqq[#V/  
int i, j, k; vSH-hAk  
int mid = (l + r) / 2; yHZ&5  
if (l == r) W v,?xm  
return; 'kg~#cf/+  
if ((mid - l) >= THRESHOLD) U2\k7I  
mergeSort(data, temp, l, mid); H;Gs0Qi;  
else F:.8O ,%u  
insertSort(data, l, mid - l + 1); !9j6l 0  
if ((r - mid) > THRESHOLD) *0r!eD   
mergeSort(data, temp, mid + 1, r); HPo><u  
else 4]Gm4zO  
insertSort(data, mid + 1, r - mid); -; i:bE  
F>%,}Y~B:  
for (i = l; i <= mid; i++) { i=fhK~Jd  
temp = data; wGHVq fm5  
} ^a!oq~ZSy  
for (j = 1; j <= r - mid; j++) { ?3v-ppw%  
temp[r - j + 1] = data[j + mid]; QPvWdjf#mM  
} )[yKO  
int a = temp[l]; UM0#S}  
int b = temp[r]; Kf$6D 79#  
for (i = l, j = r, k = l; k <= r; k++) { \fYPz }wt  
if (a < b) { X [?E{[@Z  
data[k] = temp[i++]; zNEN[  
a = temp; t!>0^['g4  
} else { 8Kn}o@Yd  
data[k] = temp[j--]; u(ETc* D]  
b = temp[j]; `1FNs?j  
} {%\;'&@z\  
} Oj2=&uz  
} Q H>g-@  
";n%^I}  
/** l[nf"'  
* @param data 5\ }QOL  
* @param l (F:|tiV+  
* @param i !wro7ilMB  
*/ jd`]]FAww  
private void insertSort(int[] data, int start, int len) { NG4@L1f%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9G6auk.m.O  
} azTiY@/  
} ZMK1V)ohn  
} kkj_k:Eah  
} zT hut!O  
e)F_zX  
堆排序: KT<N ;[;  
ItAC=/(d  
package org.rut.util.algorithm.support; w7<4D,hk  
GzT?I 7|M  
import org.rut.util.algorithm.SortUtil; ^[ 2siG  
]Rmu +N|  
/** :/}=s5aQl/  
* @author treeroot =knBwjeD  
* @since 2006-2-2 fECmELd  
* @version 1.0 = mhg@N4  
*/ Yg1HvSw\  
public class HeapSort implements SortUtil.Sort{ Z/;8eb*B7  
~6Odw GWV  
/* (non-Javadoc) 8PG&/ " K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FGpV ]p  
*/ J]Q-#g'Z  
public void sort(int[] data) { h?GE-F  
MaxHeap h=new MaxHeap(); P>|sCF  
h.init(data); ~k ]$J|}za  
for(int i=0;i h.remove(); 8,B#W#*{  
System.arraycopy(h.queue,1,data,0,data.length); G/KTF2wl7  
} ~BXy)IB6  
2nSz0 .  
private static class MaxHeap{ @,pn/[  
H\|H]:CE  
void init(int[] data){ Jb8%A@Z+  
this.queue=new int[data.length+1]; Q:Y`^jP   
for(int i=0;i queue[++size]=data; "m}N hoD4  
fixUp(size); op_ 1J;RF  
} 2W63/kRbU  
} Ye[Fu/0  
SQJ4}w>i  
private int size=0; #}UI  
R ggZ'.\  
private int[] queue; :~,V+2e  
!Jaj2mS.N  
public int get() { ZP.~Y;Ch;-  
return queue[1]; +n|@'= ]  
} tYUo;V  
. B6mvb\  
public void remove() { !1bATO:x  
SortUtil.swap(queue,1,size--); +1Rz+  
fixDown(1); e&9v`8}   
} Js9 EsN%  
file://fixdown _wZr`E)  
private void fixDown(int k) { h<BTu7a`r  
int j; -TyBb]  
while ((j = k << 1) <= size) { {ka={7  
if (j < size %26amp;%26amp; queue[j] j++; YXGxE&!  
if (queue[k]>queue[j]) file://不用交换 1(Lq9hs`  
break; h-*h;Uyc  
SortUtil.swap(queue,j,k); + a'nP=e&  
k = j; $,1KD3;+]  
} @8SA^u0  
} gZ  {  
private void fixUp(int k) { p4Xhs@.k  
while (k > 1) { kyD*b3MN  
int j = k >> 1; NcIr; }  
if (queue[j]>queue[k]) k,r}X:<6jz  
break; Qgl5Jr.  
SortUtil.swap(queue,j,k); HB}iT1.`  
k = j; )79F"ltz h  
} /,ISx }  
} tLGNYW!K  
j<A; i  
} +?0r%R%\  
m$$sNPnT  
} j|y"Lcq  
Kr%O}<"  
SortUtil: VQ4rEO=t  
^=w){]G  
package org.rut.util.algorithm; WAb@d=H{+>  
e]7J_9t@  
import org.rut.util.algorithm.support.BubbleSort; ov'C0e+o  
import org.rut.util.algorithm.support.HeapSort; a &hj|  
import org.rut.util.algorithm.support.ImprovedMergeSort; #:[CF:  
import org.rut.util.algorithm.support.ImprovedQuickSort; :j;_Xw  
import org.rut.util.algorithm.support.InsertSort; 28 ;x5m)N  
import org.rut.util.algorithm.support.MergeSort; { b7%Zd3-  
import org.rut.util.algorithm.support.QuickSort; D (Q=EdlO  
import org.rut.util.algorithm.support.SelectionSort; C)ebZ3  
import org.rut.util.algorithm.support.ShellSort; -$(2Z[  
0C0ld!>r  
/** {Ytqs(`   
* @author treeroot oD%B'{Zs4  
* @since 2006-2-2 2L7ogyrU/A  
* @version 1.0 PE2O$:b\  
*/ U~<~>^[  
public class SortUtil { ^W[3Ri G  
public final static int INSERT = 1; w?M` gl8r  
public final static int BUBBLE = 2; >jm^MS=  
public final static int SELECTION = 3; x)e(g}n  
public final static int SHELL = 4; Xxs0N_va&  
public final static int QUICK = 5; F6 f  
public final static int IMPROVED_QUICK = 6; ,<=_t{^  
public final static int MERGE = 7; t~ z;G%a  
public final static int IMPROVED_MERGE = 8; m2to94yh  
public final static int HEAP = 9; ob7hNo#  
Y r 1k\q  
public static void sort(int[] data) { @)3orH  
sort(data, IMPROVED_QUICK); S| l%JM^  
} {o8K&XU#&t  
private static String[] name={ Ny 7vId  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^xF-IA#ZeB  
}; *Q,9 [k  
s^-o_K\*c  
private static Sort[] impl=new Sort[]{ r%` |kN  
new InsertSort(), 4tFnZ2x  
new BubbleSort(), >W=^>8u  
new SelectionSort(), Trml?zexD  
new ShellSort(), 3 >G"&T{  
new QuickSort(), `5t CmU  
new ImprovedQuickSort(), 3aEO9v,n  
new MergeSort(), QZ_8r#2x  
new ImprovedMergeSort(), Cq<k(TKAX  
new HeapSort() $WZHkV  
}; Z`{GjV3%wH  
*!yY7 ~#  
public static String toString(int algorithm){ ^a;412  
return name[algorithm-1]; :X#'E Lo|  
} vN`JP`IBx  
$ Q*^c"&  
public static void sort(int[] data, int algorithm) { Ve\P,.  
impl[algorithm-1].sort(data); _t\)W(E&  
} 8fQaMn4V  
p(S {k]ZL@  
public static interface Sort { ci{WyIh  
public void sort(int[] data); xU$15|ny  
} '=>l& ;  
^%m~VLH  
public static void swap(int[] data, int i, int j) { jo[U6t+pj7  
int temp = data; D P+W* 87J  
data = data[j]; ' 8UhYwyr  
data[j] = temp; to;cF6X  
} d8/KTl  
} (KdP^.7  
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