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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。 K??(>0Qr}r  
插入排序: EG=~0j~  
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package org.rut.util.algorithm.support; 'Pk1 4`/  
F?"#1j e  
import org.rut.util.algorithm.SortUtil; |VC|@ Q  
/** ~Q<h,P  
* @author treeroot ?+6w8j%\  
* @since 2006-2-2 iIrH&}2  
* @version 1.0 C'5b)0km  
*/ up`.#GWm  
public class InsertSort implements SortUtil.Sort{ DVNx\t  
D9.H<.|36  
/* (non-Javadoc) -<e8\Z`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TNgf96) y  
*/ X{2))t%  
public void sort(int[] data) { w.v yEU^  
int temp; x-W6W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z?@1X`@  
} m]}%Ag^x  
} B?o ?LI  
} ~\4`tc  
kC : pal  
} #$/SM_X14C  
P!uwhha/g  
冒泡排序: H#P)n R M  
H_3-"m&3  
package org.rut.util.algorithm.support; ]<y _ =>  
g$=y#<2?  
import org.rut.util.algorithm.SortUtil; *c"tW8uR  
2oL~N*^C  
/** &+"-'7  
* @author treeroot -TL `nGF  
* @since 2006-2-2 "Yh[-[,  
* @version 1.0 ?r< F/$/  
*/ ~n)gP9Hv  
public class BubbleSort implements SortUtil.Sort{ WsHC%+\'  
JjO="Cmk/  
/* (non-Javadoc) X MkyX&y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sf""]c$  
*/ wXj!bh8\r  
public void sort(int[] data) { {~cG'S Y%  
int temp; J2tD).G  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4i<V^go"  
if(data[j] SortUtil.swap(data,j,j-1); 'VH%cz*  
} /K+GM8rtE  
} I,rs&m?/m  
} Ky6.6Y<.|  
} 8vP:yh@  
UXU!sd  
} ?U}Ml]0~  
Z.!tp  
选择排序: SLCV|@G  
4JOw@/nE  
package org.rut.util.algorithm.support; {'(1c)q>  
DM*GvBdR  
import org.rut.util.algorithm.SortUtil; h~\bJ*Zp  
%Fb4   
/** &DUt`Dr w  
* @author treeroot _dg2i|yP<  
* @since 2006-2-2 _PI w""ssr  
* @version 1.0 C}})dL;(  
*/ NTj:+z0  
public class SelectionSort implements SortUtil.Sort { N.j?:  
 ~\0uy3%  
/* T*m;G(  
* (non-Javadoc) O-5s}RT  
* ^N{Lau  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +x?_\?&Ks  
*/ VW," dmC  
public void sort(int[] data) { 7mUpn:U  
int temp; ZD)pdNX  
for (int i = 0; i < data.length; i++) { /Dh[lgF0C  
int lowIndex = i; n_8wYiBs(  
for (int j = data.length - 1; j > i; j--) { $ N7J:Q  
if (data[j] < data[lowIndex]) { rSGt`#E-s.  
lowIndex = j; C^dnkuA  
} Gp<7i5  
} )JYt zc  
SortUtil.swap(data,i,lowIndex); !a(#G7zA  
} |?a 4Nl?  
} n\U3f M>N  
mAI<zh&SQ  
} )isJ^ *6y  
|l*#pN&L  
Shell排序: i/Nd  
g{]C@,W  
package org.rut.util.algorithm.support; uU7s4oJ|  
h`1{tu  
import org.rut.util.algorithm.SortUtil; j|WuOZm\0  
ISp'4H7R+N  
/** G:n,u$2a<  
* @author treeroot /^BaQeH?R  
* @since 2006-2-2 qQL]3qP  
* @version 1.0 c(]NpH in  
*/ !W^b:qjJ  
public class ShellSort implements SortUtil.Sort{ !!WSGZUR  
^p'iX4M  
/* (non-Javadoc) <Z8I#IPl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;OE=;\  
*/ Q%x |  
public void sort(int[] data) { 3A~53W$M  
for(int i=data.length/2;i>2;i/=2){ n'dxa<F2|  
for(int j=0;j insertSort(data,j,i); Pk9 4O  
} ?<Tt1fpG  
} Do&em8i z  
insertSort(data,0,1); R0 g-  
} 1|+Z mo"  
Pf?*bI  
/** 3L;GfYr0  
* @param data ujo3"j[b  
* @param j l1Zf#]x  
* @param i )\iO wA  
*/ ywPFL/@  
private void insertSort(int[] data, int start, int inc) { OS X5S:XS  
int temp; %*>ee[^L ,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \~3g*V  
} jz\LI  
} yNw YP%"y  
} #i#4h<R  
@0XqUcV  
} [sM~B  
qre.^6x  
快速排序: j'z}m+_?  
G=[ =[o\  
package org.rut.util.algorithm.support; T8ga)BA  
ql|ksios  
import org.rut.util.algorithm.SortUtil; GsYi/Z   
!,f#oCL  
/** rUb`_W@  
* @author treeroot tkN5 |95  
* @since 2006-2-2 {}vB# !  
* @version 1.0 F?+K~['i  
*/ w(sD}YA)  
public class QuickSort implements SortUtil.Sort{ INm21MS$  
Nb))_+/  
/* (non-Javadoc) LI>tN R~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MZpG1  
*/ ERql^Yr  
public void sort(int[] data) { /Dn,;@ZwAi  
quickSort(data,0,data.length-1); U%swqle4  
} +m> %(?=A  
private void quickSort(int[] data,int i,int j){ f}4bnu3  
int pivotIndex=(i+j)/2; KUr}?sdz  
file://swap 8=]R6[,fD  
SortUtil.swap(data,pivotIndex,j); :r<uH6x|  
zi^T?<t  
int k=partition(data,i-1,j,data[j]); l9U^[;D  
SortUtil.swap(data,k,j); )PM&x   
if((k-i)>1) quickSort(data,i,k-1); rPK)=[MZ  
if((j-k)>1) quickSort(data,k+1,j); Z3ucJH/)V  
Ab]`*h\U  
} wKjL}1.k  
/** MjO.s+I  
* @param data rtl|zCst  
* @param i OygR5s +  
* @param j jIZpv|t)  
* @return 07zbx6:t  
*/ ls(lL\  
private int partition(int[] data, int l, int r,int pivot) { ~*Fbs! ;,  
do{ /$'R!d5r  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ebbC`eFD  
SortUtil.swap(data,l,r); cU,]^/0Y  
} rt\i@}  
while(l SortUtil.swap(data,l,r); 2#sJ`pdQ  
return l; tgu}^TfKkg  
} vd@ _LcK  
ryd*Ha">I  
} {x3"/sF  
~^U(GAs  
改进后的快速排序: 4g}eqW  
D ^ mfWJS  
package org.rut.util.algorithm.support; QLq^[ >n  
jQAK ?7':=  
import org.rut.util.algorithm.SortUtil; __}j {Buk  
I8|7~jRB  
/** Q4gsOx P  
* @author treeroot +?xW%omy  
* @since 2006-2-2 +doZnU,  
* @version 1.0 -}liG  
*/ H /E.R[\+x  
public class ImprovedQuickSort implements SortUtil.Sort { F`l r5  
xLfx/&2  
private static int MAX_STACK_SIZE=4096; n'<FH<x  
private static int THRESHOLD=10; ogt<vng  
/* (non-Javadoc) R %QgOz3`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P4{8pO]B  
*/ l]BIFZ~  
public void sort(int[] data) { WU:~T.Su  
int[] stack=new int[MAX_STACK_SIZE]; [L.+N@M  
[4V{~`sF  
int top=-1; ?GdoB7(%  
int pivot; ?v]EXV3  
int pivotIndex,l,r; Pt/dH+r`%  
5ua`5Hb;  
stack[++top]=0; gr\UI!]F  
stack[++top]=data.length-1; .OLm{  
kaSy 9Y{  
while(top>0){ %3L4&W _T  
int j=stack[top--]; %P!6cyQS  
int i=stack[top--]; |hsg= LX  
[.M<h^xrB  
pivotIndex=(i+j)/2; y.$/niQ%  
pivot=data[pivotIndex]; efj[7K.h  
_7j-y 9V  
SortUtil.swap(data,pivotIndex,j); d!+8  
|sf&t  
file://partition c/fU0cA@  
l=i-1; 2s(c#$JVS  
r=j; dLV>FpA\  
do{ 5PY,}1`  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); FLT4:B7  
SortUtil.swap(data,l,r); @dl{ .,J  
} ]a4rA+NFLB  
while(l SortUtil.swap(data,l,r); 89*txYmx  
SortUtil.swap(data,l,j); RAw/Q$I  
idWYpU>gC  
if((l-i)>THRESHOLD){ Ks|qJ3;  
stack[++top]=i; DnbT<oEL  
stack[++top]=l-1; [If%+mHdU  
} 5Jo><P a  
if((j-l)>THRESHOLD){ /U |@sw4  
stack[++top]=l+1; cG)i:  
stack[++top]=j; fq-zgqF<  
} K-%x] Fp=  
3lw KV  
} (;RmfE'PX  
file://new InsertSort().sort(data); \-X Qo  
insertSort(data); )%8 ;C]G;  
} c{YBCWA  
/** aRPpDSR?l  
* @param data 2Zf} t  
*/ G}!dm0s$  
private void insertSort(int[] data) { 8y9oj9 ;E]  
int temp;  4x.1J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PQ6.1}  
} W4 v/,g>  
} p.(8ekh  
} )tB:g.2k  
V`F]L^m=L  
} ~RlsgtX"  
4/6?wX  
归并排序: #\15,!*a=  
13+f ^  
package org.rut.util.algorithm.support; 1C,=1bY  
r_8[}|7;  
import org.rut.util.algorithm.SortUtil; F:p'%#3rU/  
yV;_]_EO  
/** 60 D0z  
* @author treeroot -0Ws3  
* @since 2006-2-2 a: C h"la  
* @version 1.0 8SV.giG;  
*/ Lt\Wz'6Y  
public class MergeSort implements SortUtil.Sort{ 5u(,g1s}UZ  
a?_!  
/* (non-Javadoc) ;+d2qbGd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _!vxX ]  
*/ R07 7eX  
public void sort(int[] data) { r]GG9si  
int[] temp=new int[data.length]; ]r]=Q"/5  
mergeSort(data,temp,0,data.length-1); P0 R8 f  
}  t 0 $}  
;,d^=:S6@  
private void mergeSort(int[] data,int[] temp,int l,int r){ F+%6?2 J  
int mid=(l+r)/2; x4b.^5"`:  
if(l==r) return ; (jR7D"I  
mergeSort(data,temp,l,mid); %9bf^LyD  
mergeSort(data,temp,mid+1,r); 6V[ce4a%  
for(int i=l;i<=r;i++){ \^l273  
temp=data; {#-I;I:  
} qfRsp rRI"  
int i1=l; 2)_Zz~P^f  
int i2=mid+1; BKd03s=  
for(int cur=l;cur<=r;cur++){ X\\c=[#8-  
if(i1==mid+1) |f9fq~'1e  
data[cur]=temp[i2++]; 2P&KU%D)0s  
else if(i2>r) <oFZFlY@  
data[cur]=temp[i1++]; =f FTi1]/h  
else if(temp[i1] data[cur]=temp[i1++]; E=G"_ ^hCE  
else $2tPqZ>  
data[cur]=temp[i2++]; I.C,y\  
} -SyQ`V)T7N  
} tc.`P]R   
W3AtO  
} BWtGeaW/sr  
qFqK. u  
改进后的归并排序: &OK[n1M  
 1rnbUE  
package org.rut.util.algorithm.support; 2u B66i  
6[\b]I\Q  
import org.rut.util.algorithm.SortUtil; Xs,[Z2_iq  
{*#}"/:8K  
/** )GbVgYkk  
* @author treeroot AeQIsrAHE  
* @since 2006-2-2 A>0wqT  
* @version 1.0 $w:7$:k  
*/ &:]ej6 V'[  
public class ImprovedMergeSort implements SortUtil.Sort { =Gl6~lJ{_  
UKfC!YR2J8  
private static final int THRESHOLD = 10; dV~d60jOF  
y{Fq'w!ap  
/* d9@Pze">e  
* (non-Javadoc) <1^\,cI2  
* ;+86q"&n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mk:k0,z  
*/ APne!  
public void sort(int[] data) { D@-'<0=  
int[] temp=new int[data.length]; n]K`ofjl^  
mergeSort(data,temp,0,data.length-1); \A~r~  
} 0$saDmED  
r~<I5MZY  
private void mergeSort(int[] data, int[] temp, int l, int r) { &Fw8V=Pw  
int i, j, k; [ X7LV  
int mid = (l + r) / 2; |._9;T-Yde  
if (l == r) cH== OM7&-  
return; KG2ij~v  
if ((mid - l) >= THRESHOLD) GnCO{"n  
mergeSort(data, temp, l, mid); ;usv/8  
else LTof$4s  
insertSort(data, l, mid - l + 1); ].A>ORS/  
if ((r - mid) > THRESHOLD) != @U~X|cu  
mergeSort(data, temp, mid + 1, r); qGAb h  
else D'nO  
insertSort(data, mid + 1, r - mid); [@"7qKd1  
k+D32]b@  
for (i = l; i <= mid; i++) { "s?!1v(v  
temp = data; r.JY88"  
} $y2"Q,n+  
for (j = 1; j <= r - mid; j++) { G $P|F6  
temp[r - j + 1] = data[j + mid]; nVSuvq|S  
} xJ0Q8A  
int a = temp[l]; l^LYSZg'R8  
int b = temp[r]; |=\w b^l+  
for (i = l, j = r, k = l; k <= r; k++) { oo+nqc`,O  
if (a < b) { ZysZS%  
data[k] = temp[i++]; H@j D %  
a = temp; W-72&\7  
} else { BAJEn6f?  
data[k] = temp[j--]; r+#!]wNPe  
b = temp[j]; y*f 5_  
} Q?1' JF!G  
} S4'\=w #  
} |Z"5zL10  
r@|{mQOxa  
/** CO)BF%?B  
* @param data w^rINPAS  
* @param l h 8ND=(  
* @param i !BQ:R(w  
*/ )/B' ODa  
private void insertSort(int[] data, int start, int len) { hwon ^?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Msk^H7  
} |= xK-;qs  
} g_T[m*  
} *.+Eg$'~V  
} dx<KZR$!V  
ME9jN{ le  
堆排序: [6$n  
t9Sog~:'  
package org.rut.util.algorithm.support;  Z>O2  
t 7(#Cuv-  
import org.rut.util.algorithm.SortUtil; O<H5W|cM  
<<ze84 E  
/** K~U5jp c  
* @author treeroot I_h8)W  
* @since 2006-2-2 cTq}H_hC  
* @version 1.0 Zy<gA >  
*/ s={jwI50  
public class HeapSort implements SortUtil.Sort{ @@])B#  
3ZAPcpB2  
/* (non-Javadoc) ^hMJNy&R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X}-) io  
*/ <8'-azpJ6<  
public void sort(int[] data) { t+2!"Jr  
MaxHeap h=new MaxHeap(); Vk#wJ-  
h.init(data); (,i&pgVZ  
for(int i=0;i h.remove(); O6P{+xj$  
System.arraycopy(h.queue,1,data,0,data.length); ZQ0R3=52r  
} )S,Rx  
Kgb 3>r  
private static class MaxHeap{ e*zt;SR  
O< \i{4}}  
void init(int[] data){ K<_bG<tm_  
this.queue=new int[data.length+1]; @N?u{|R:d  
for(int i=0;i queue[++size]=data; 1R e5)Y:i  
fixUp(size); [VsTyqV a  
} ~S$\ PG4  
} LH" CIL2  
~zcHpxO^W  
private int size=0; d/m.VnW  
IwR/4LYI  
private int[] queue; #y?iUv  
=Eh~ wm  
public int get() { Kc%GxD`  
return queue[1]; $v6`5;#u  
} #cZ<[K q6  
[5iBXOmpS=  
public void remove() { ;mi+[`E  
SortUtil.swap(queue,1,size--); Oh|KbM*vS  
fixDown(1); |#)S`Ua1  
} 1U/ dc.x5  
file://fixdown &2,0?ra2&  
private void fixDown(int k) { xv+47.?N  
int j; -q8R'?z[  
while ((j = k << 1) <= size) { y|e@zf  
if (j < size %26amp;%26amp; queue[j] j++; gaIN]9wLm  
if (queue[k]>queue[j]) file://不用交换 wB~5&:]jr  
break; { ]F };_  
SortUtil.swap(queue,j,k); .[qm>j,  
k = j; 9(CY"Tc3  
} C.& R,$  
} @gn}J'  
private void fixUp(int k) { fBi6% #  
while (k > 1) { X<j(AAHE  
int j = k >> 1; pSzO )j  
if (queue[j]>queue[k]) z|^+uL  
break; E76#xsyhF  
SortUtil.swap(queue,j,k); -D4"uoN.  
k = j; 6^'BhHP  
} &azy1.i~  
} _@gd9Fi7J  
|_Tp:][mf  
} 9CxFj)#5F  
X }W4dpU,  
} *Bse3%-v  
_!} L\E~  
SortUtil: !97k  
TrEo5H;  
package org.rut.util.algorithm; uE]kv  
t@Bl3Nt{  
import org.rut.util.algorithm.support.BubbleSort; bS!4vc1`2  
import org.rut.util.algorithm.support.HeapSort; )5O E~}>  
import org.rut.util.algorithm.support.ImprovedMergeSort; J$/'nL<{^  
import org.rut.util.algorithm.support.ImprovedQuickSort;  3 cb$g  
import org.rut.util.algorithm.support.InsertSort; ?q %&"  
import org.rut.util.algorithm.support.MergeSort; 3Aqw )B'"_  
import org.rut.util.algorithm.support.QuickSort; j -R9=vB2  
import org.rut.util.algorithm.support.SelectionSort; p:/#nmC<  
import org.rut.util.algorithm.support.ShellSort; &Oxf^x["]  
3om_Z/k  
/** ZITic&>W  
* @author treeroot ^tFbg+.  
* @since 2006-2-2 c=52*&  
* @version 1.0 .:nV^+)  
*/ sb3k? q  
public class SortUtil { L2jjkyX]  
public final static int INSERT = 1; l0&Y",vy  
public final static int BUBBLE = 2; GlPd)m`  
public final static int SELECTION = 3; xX5EhVR   
public final static int SHELL = 4; )v+R+3<  
public final static int QUICK = 5; &>T7]])  
public final static int IMPROVED_QUICK = 6; dYn<L/#  
public final static int MERGE = 7; kW!`vQm~  
public final static int IMPROVED_MERGE = 8; O2n[`9*  
public final static int HEAP = 9; ]((Ix,ggP  
_Z>I"m  
public static void sort(int[] data) { {j!jm5  
sort(data, IMPROVED_QUICK); ?e. Ge0&  
} 1>pFUf|cV  
private static String[] name={ 43HZ)3!me  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &l0-0 T>  
}; FB\lUO)U\c  
us0{y7(p  
private static Sort[] impl=new Sort[]{ 0&@pD`K e  
new InsertSort(), l5*sCp*Z  
new BubbleSort(), 6HK dBW$/  
new SelectionSort(), =rB=! ;  
new ShellSort(), R'Uw17I  
new QuickSort(), Ne=o+ $.(  
new ImprovedQuickSort(), R=ipK63  
new MergeSort(), 4L`<xX;:{  
new ImprovedMergeSort(), v[*&@aW0n  
new HeapSort() MB:VACCr  
}; 2l YA% n  
U^@8ebv  
public static String toString(int algorithm){ E;>Bc Pt5  
return name[algorithm-1]; O9_S"\8]@  
} 7F;dLd'  
{f12&t  
public static void sort(int[] data, int algorithm) { qVidubsW  
impl[algorithm-1].sort(data); Shm$>\~=  
} ?vd_8C2B  
y. A]un1  
public static interface Sort { $UX^$gG  
public void sort(int[] data); pT ;{05  
} .vm.g=-q  
(0c L! N;;  
public static void swap(int[] data, int i, int j) { bY>JLRQJ-  
int temp = data; c@ea ;Cv  
data = data[j]; pp!>:%  
data[j] = temp; 1/l;4~p7'  
} {Iu9%uR>@  
} <8SRt-Cr  
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