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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。 B+zq!+ HJ  
插入排序: \FVR'A1  
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package org.rut.util.algorithm.support; ODv)-J  
n6Q 3X  
import org.rut.util.algorithm.SortUtil; cY\-e?`=4  
/** [`ttNW(_  
* @author treeroot .vpQ3m>  
* @since 2006-2-2 Qg9{<0{u  
* @version 1.0 ~Gwn||g78  
*/  Kn\Oj=4  
public class InsertSort implements SortUtil.Sort{ 8l!S<RA  
L>@0Nne7  
/* (non-Javadoc) 4 Iy\   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  J|6aa  
*/ 0pkU1t~9  
public void sort(int[] data) { Mv4JF(,S  
int temp; Qt>yRt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f_raICO{R  
} dqF--)Nb  
} "]MF =-v  
} ;=h^"et  
?1PY]KNaK  
} NTAPx=!1*  
iy$]9Wf6=@  
冒泡排序: ) 3Y E$,  
P.;B V",  
package org.rut.util.algorithm.support; q%>L/KJ#  
!7%L%~z^  
import org.rut.util.algorithm.SortUtil; 4,$x~m`N  
b.Y[:R_9&  
/** =9pFb!KX  
* @author treeroot >b{%j8u M  
* @since 2006-2-2 ;Kkn7&'F  
* @version 1.0 |&RdOjw$u  
*/ ,3fw"P$  
public class BubbleSort implements SortUtil.Sort{ m?<C\&)6x  
|dX#4Mq^,  
/* (non-Javadoc) FpW{=4yk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >xP $A{  
*/ Y;#P"-yH  
public void sort(int[] data) { ^{~y+1lt'  
int temp; A|y&\~<A  
for(int i=0;i for(int j=data.length-1;j>i;j--){ TC R(  
if(data[j] SortUtil.swap(data,j,j-1); H.i_,ZF  
} ?FMHK\  
} fWKv3S1dT  
} [eWB vAiW  
} uv_*E`pN~  
~f%gW  
} ^lf;Lc  
/5yW vra  
选择排序: N{Is2Ia  
zyCl`r[}  
package org.rut.util.algorithm.support; 2^qY, dL  
7~|o_T  
import org.rut.util.algorithm.SortUtil; Q3oVl^q  
?'h@!F%R'  
/** 1L &_3}  
* @author treeroot :1.$7W t  
* @since 2006-2-2 /3+7a\|mKr  
* @version 1.0 25YJH1x  
*/ 37lmB '~  
public class SelectionSort implements SortUtil.Sort { oz[E>%  
Keof{>V=CA  
/* v5<Ext rV  
* (non-Javadoc) t[an,3  
* uOW9FAW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) umls=iz  
*/ _/MKU!\l  
public void sort(int[] data) { ~9'VP }\  
int temp; z@iY(;Qo  
for (int i = 0; i < data.length; i++) { l|N1u=Z  
int lowIndex = i; MR+ndB<  
for (int j = data.length - 1; j > i; j--) { })"9TfC  
if (data[j] < data[lowIndex]) { ] YQ*mvI]  
lowIndex = j; :_H$*Q=1  
} Wb*d`hzQ}  
} fMLm_5(H  
SortUtil.swap(data,i,lowIndex); Yq;S%.  
} {kZhje^$vi  
} =VY[m-q5  
@~a52'\  
} OkFq>;{a  
pV>/ "K  
Shell排序: U<#i\4W  
< ^J!*>  
package org.rut.util.algorithm.support; q)!{oi{x(  
Iqo4INGIi  
import org.rut.util.algorithm.SortUtil; KUuwScb\  
k87B+0QEL  
/** 1~5={eI  
* @author treeroot S)Ld^0w  
* @since 2006-2-2 \h #vL  
* @version 1.0 j4brDlo?@  
*/ l"ih+%S  
public class ShellSort implements SortUtil.Sort{ tnKzg21%  
0BVMLRB  
/* (non-Javadoc) 5IMh$!/uc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YHeB <v  
*/ +o_`k!  
public void sort(int[] data) { !-\*rdE {9  
for(int i=data.length/2;i>2;i/=2){ x$M[/ID0  
for(int j=0;j insertSort(data,j,i); [0IeEjL  
} i-&kUG_X  
} Ye(0'*-jyc  
insertSort(data,0,1); %A64 Y<K  
} D;:lw]  
?rHc%H  
/** pGsVO5M?  
* @param data <cWo]T`X!  
* @param j  '5[L []A  
* @param i x28Bz*O  
*/ ]CHMkuP[k  
private void insertSort(int[] data, int start, int inc) { #Q|$&b  
int temp; }25{"R}K  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %oN^1a'&)  
} $'[( DwLS  
} kv5D=0r  
} 9$d (`-&9p  
L!e@T'  
} , :kCt=4%  
[& hdyLt  
快速排序: TJO|{Lxm  
Gzm[4|nO^  
package org.rut.util.algorithm.support; v8w N2[fC  
d5WE^H)E.  
import org.rut.util.algorithm.SortUtil; sY1*Wo lA  
,~G[\2~p  
/** orL7y&w(v:  
* @author treeroot wBmbn=>#S  
* @since 2006-2-2  ExnszFX*  
* @version 1.0 2poU \|H  
*/ +  ^~n09  
public class QuickSort implements SortUtil.Sort{ iAXx`>}m  
A 7TP1  
/* (non-Javadoc) 3HfT9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -98bX]8  
*/ ;N4mR6  
public void sort(int[] data) { wV(_=LF  
quickSort(data,0,data.length-1); dn5T7a~   
} 9Uk9TG5  
private void quickSort(int[] data,int i,int j){ /=-E`%R}!  
int pivotIndex=(i+j)/2; Q2k\8i  
file://swap @c.QrKSaD  
SortUtil.swap(data,pivotIndex,j); ,sJ{2,]~  
5F0sfX  
int k=partition(data,i-1,j,data[j]); guf+AVPno  
SortUtil.swap(data,k,j); @o>2:D1G  
if((k-i)>1) quickSort(data,i,k-1); 5a_K|(~3I  
if((j-k)>1) quickSort(data,k+1,j); _39b8s {  
* 9*I:Uh57  
} 'rd{fe_g!  
/** "w|GIjE+  
* @param data 3 #jPQ[+  
* @param i 4\-kzGgmo  
* @param j [%bshaY:  
* @return C0kwI*)  
*/ 7Qq>?H -  
private int partition(int[] data, int l, int r,int pivot) { Ak4iG2  
do{ 6i&WF<%D  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); EI/_=.d  
SortUtil.swap(data,l,r); 7$b78wax  
} )~!Gs/w6  
while(l SortUtil.swap(data,l,r); VpJ2Qpd=  
return l; m~X:KwK4  
} mEE/Olh W  
y+X%qTB  
} AMtFOXx%I  
33 N5>}  
改进后的快速排序: {L.0jAwB  
HW{+THNj  
package org.rut.util.algorithm.support;  BeP0lZ  
!f"@pR6  
import org.rut.util.algorithm.SortUtil; o<%Sr*  
R#Ss_y  
/** F5E KWP  
* @author treeroot b/2t@VlL  
* @since 2006-2-2 _D z4 }:9  
* @version 1.0 q?\3m3GM  
*/ y'Wz*}8pr  
public class ImprovedQuickSort implements SortUtil.Sort { !&! sn"yD  
(8{h I  
private static int MAX_STACK_SIZE=4096; t'7)aJMP  
private static int THRESHOLD=10; = "Dmfy7  
/* (non-Javadoc) n {^D_S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fet>KacTht  
*/ ~EdmVEu  
public void sort(int[] data) { g3"`b)M  
int[] stack=new int[MAX_STACK_SIZE]; |-Y,:sY:  
9g " ?`_  
int top=-1; 9n44 *sZ  
int pivot; `_z8DA}E  
int pivotIndex,l,r; Riu0;U( \  
GndF!#?N(  
stack[++top]=0; o3%Gc/6%  
stack[++top]=data.length-1; &{l?j>|TM  
My=p>{s  
while(top>0){ _%"/I96'  
int j=stack[top--]; -CxaOZG  
int i=stack[top--]; )<jj O  
Ue~M .LZb  
pivotIndex=(i+j)/2; |?{Zx&yUw  
pivot=data[pivotIndex]; @u$4{sjgf\  
/|hKZTZJdN  
SortUtil.swap(data,pivotIndex,j); _H@S(!  
uvZ|6cM  
file://partition "EhA _ =i  
l=i-1; 6XB9]it6  
r=j; 6Pd;I,k  
do{ Pm V:J9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {6v+ Dz>  
SortUtil.swap(data,l,r); !a4pKN`qLY  
} d94Lc-kq^  
while(l SortUtil.swap(data,l,r); 72luTR Q  
SortUtil.swap(data,l,j); WEWNFTI  
)I`B+c:  
if((l-i)>THRESHOLD){ M(SH3~  
stack[++top]=i; P62g7>B5^  
stack[++top]=l-1; #@ lLx?U  
} D1x~d<j  
if((j-l)>THRESHOLD){ ={8ClUV#  
stack[++top]=l+1; LXfDXXF  
stack[++top]=j; u9sffX5x[J  
}  xUzfBn  
m$0T"`AP`  
} 'TezUBRAz  
file://new InsertSort().sort(data); B!rY\ ?W  
insertSort(data); _fa2ntuS=f  
} IQY\L@"  
/** $Jx] FZDQ  
* @param data YV 2T$#7u  
*/ JtvAi\52$  
private void insertSort(int[] data) { dsrzXmE0  
int temp; BTGPP@p4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Oz]iHe  
} zTm&m#){3A  
} ocGqX Dg3  
} I`zn#U'  
57D /"  
} 3S +.]v>  
exZa:9 sp  
归并排序: 7n}J}8Y*U2  
2NqlE  
package org.rut.util.algorithm.support; kf.w:X"i  
O-5H7Kd-  
import org.rut.util.algorithm.SortUtil; c9r, <TR9  
)t&j0`Yq  
/** Kcl>uAgU  
* @author treeroot ~ex1,J*}t  
* @since 2006-2-2 3|l+&LF!IC  
* @version 1.0 9;sebqC?  
*/ fg^$F9@  
public class MergeSort implements SortUtil.Sort{ d1vC-n N  
34&n { xv  
/* (non-Javadoc) [f&ja[m q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DXsp 2  
*/ ?tV$o,11  
public void sort(int[] data) { Mb"i}Yt{  
int[] temp=new int[data.length]; /87?U; |V  
mergeSort(data,temp,0,data.length-1); rAM{<  
} fiES6VL  
&X }GJLC3  
private void mergeSort(int[] data,int[] temp,int l,int r){ dzKI?i)x  
int mid=(l+r)/2; h/mmV:v  
if(l==r) return ; bb}|"m .  
mergeSort(data,temp,l,mid); LlrUJ-uC7  
mergeSort(data,temp,mid+1,r); DUFfk6#X}  
for(int i=l;i<=r;i++){ tF+m/}PM^  
temp=data; -}AAA*P  
} OB.TAoH:  
int i1=l; Sbc  
int i2=mid+1; 6X$]d^)h{  
for(int cur=l;cur<=r;cur++){ 2I3MV:5  
if(i1==mid+1) pIXbr($  
data[cur]=temp[i2++]; &O/;YGEAB  
else if(i2>r) 5RrzRAxq  
data[cur]=temp[i1++]; { r yv7G  
else if(temp[i1] data[cur]=temp[i1++]; F\^9=}b_i  
else A9`& Wnw?  
data[cur]=temp[i2++]; :* 4b,P  
} PJ5~,4H-4  
} vR[XbsNM  
eG55[V<!  
} h8iic  
Bvk 8b  
改进后的归并排序: Y@)/iwq  
3x@t7B  
package org.rut.util.algorithm.support; zy^t95/m  
F%Oy4*4  
import org.rut.util.algorithm.SortUtil; __dSEOGoe  
HRS^91aK  
/** TmZ sC5  
* @author treeroot #&u9z5ywM  
* @since 2006-2-2 ~4IkQ|,  
* @version 1.0 o/I'Qi$v-  
*/ mwU|Hh)N]  
public class ImprovedMergeSort implements SortUtil.Sort { I.As{0cc  
xn|M]E1)  
private static final int THRESHOLD = 10; u*u3<YQ  
n]{sBI3  
/* YGFE(t;lPU  
* (non-Javadoc) 1- Jd Qs6  
* wl2P^Pj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~U"puEftbs  
*/ 'b1k0 9'  
public void sort(int[] data) { jiw5>RNt  
int[] temp=new int[data.length]; .S4c<pMap  
mergeSort(data,temp,0,data.length-1); .xG3`YH  
} ~gZ"8frl  
m ioNMDG  
private void mergeSort(int[] data, int[] temp, int l, int r) { IP<]a5  
int i, j, k; dA4DW  
int mid = (l + r) / 2; p6P .I8g  
if (l == r) X^Dklqqy  
return; /<zBjvr%%  
if ((mid - l) >= THRESHOLD) eI99itDQ  
mergeSort(data, temp, l, mid); Q1hHK'3w  
else +8p4\l$<`  
insertSort(data, l, mid - l + 1); p SMF1Oy  
if ((r - mid) > THRESHOLD) FLf< gz  
mergeSort(data, temp, mid + 1, r); A<$~Q;r2a  
else &=ZVU\o:  
insertSort(data, mid + 1, r - mid); dZMf5=tb  
`hpX97v  
for (i = l; i <= mid; i++) { :xwyE(w  
temp = data; 'LC-/_g  
} 0o-. m  
for (j = 1; j <= r - mid; j++) { u_31Db<  
temp[r - j + 1] = data[j + mid]; oJ4OVfknD  
} +hiskV@v  
int a = temp[l]; ^W8kt  
int b = temp[r]; zH)M,+P  
for (i = l, j = r, k = l; k <= r; k++) { qK=uSL o\+  
if (a < b) { nev@ykP6  
data[k] = temp[i++]; o,(]w kF  
a = temp; cl,\N\  
} else { =o_Ua^mr  
data[k] = temp[j--]; ;YGCsLT<xt  
b = temp[j]; RV@'$`Q  
} )SjhOvm  
} -2DvKW$  
} +wPXDN#R  
u([|^~H]  
/** tRC*@>I$  
* @param data Dt]N&E#\D  
* @param l A  [c1E[  
* @param i `PoFKtVX M  
*/ Gn?NY}.S  
private void insertSort(int[] data, int start, int len) { rm}%C(C{J  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Fi!BXngbd  
} 'GyO  
} PAYS~MnV@3  
} ctk~}( 1#  
} Sj(5xa[  
]0dj##5tJ  
堆排序: ]wxjd l  
azBYh*s=5{  
package org.rut.util.algorithm.support; .dwy+BzS  
e #!YdXSx  
import org.rut.util.algorithm.SortUtil; GBg~NkC7.  
C srxi'Pe  
/** NpPuh9e{  
* @author treeroot j-$F@p_2F  
* @since 2006-2-2 `>1XL2  
* @version 1.0 \img   
*/ 'r 0kX||  
public class HeapSort implements SortUtil.Sort{ NB^+Hcb$  
ojva~mnFf  
/* (non-Javadoc) +`RQ ^9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3u,CI!  
*/ _Jt  
public void sort(int[] data) { ~vPR9\e  
MaxHeap h=new MaxHeap(); Tf*DFyr  
h.init(data); ]Y.GU7`  
for(int i=0;i h.remove(); zhdS6Gk+  
System.arraycopy(h.queue,1,data,0,data.length); y&&%%3  
} d YliC  
u5Tu~  
private static class MaxHeap{ T9'd?nw9  
a +$'ULK+r  
void init(int[] data){ P Y&(ObC  
this.queue=new int[data.length+1]; iVSN>APe  
for(int i=0;i queue[++size]=data; UE\Z] t!  
fixUp(size); :w,#RcW  
} !E@4^A80\W  
} UURYK~$K:  
`qs[a}%'>"  
private int size=0; oE.59dx  
a #`Y(R'  
private int[] queue; G2y`yg  
? h |&kRq  
public int get() { 7TU(~]Z  
return queue[1]; Abc%VRsT  
} umo<9Y  
,L&d\M"f  
public void remove() { V] 0T P#  
SortUtil.swap(queue,1,size--); Rp0`%}2 o  
fixDown(1); x@LNjlP  
} I<+i87=  
file://fixdown EA``G8Vn>  
private void fixDown(int k) { +bDBc?HZ{$  
int j; 8\VP)<<  
while ((j = k << 1) <= size) { ZJf:a}=h  
if (j < size %26amp;%26amp; queue[j] j++; Z#NEa.]  
if (queue[k]>queue[j]) file://不用交换 sS{!z@\Lf  
break; 5Y4#aq  
SortUtil.swap(queue,j,k); xf4CM,Z7(  
k = j; =THRy ZCH  
} oAprM Z 7Y  
} MHqk-4Mz  
private void fixUp(int k) { g-LMct8$  
while (k > 1) { q|zips,  
int j = k >> 1; vrq5 +K&||  
if (queue[j]>queue[k]) +l27y0>t  
break; vq` M]1]FO  
SortUtil.swap(queue,j,k); +(U;+6 b  
k = j; csjCXT=Ve  
} ,CxIA^  
} 90Bn}@t=Q  
IgyoBfj\d  
} 5q,ZH6\ {  
s1>d)2lX  
} "&%Lhyt  
7U1^=Y@t}  
SortUtil: -T=sY/O  
{2.zzev'  
package org.rut.util.algorithm; &V(;zy4(R  
#ZyY(S1.  
import org.rut.util.algorithm.support.BubbleSort; Zg&o][T  
import org.rut.util.algorithm.support.HeapSort; 6Z#$(oC  
import org.rut.util.algorithm.support.ImprovedMergeSort; G0Y]-*1  
import org.rut.util.algorithm.support.ImprovedQuickSort; f\vMdY  
import org.rut.util.algorithm.support.InsertSort; b*)F7{/Z  
import org.rut.util.algorithm.support.MergeSort; 3EV?=R  
import org.rut.util.algorithm.support.QuickSort; 2|A?9aE%0  
import org.rut.util.algorithm.support.SelectionSort; k?;@5r)y-  
import org.rut.util.algorithm.support.ShellSort; M(U<H;Csk  
4DgH/Yo  
/** ]%2y`Jrl^W  
* @author treeroot 6]|-%  
* @since 2006-2-2 z'&tmje[?  
* @version 1.0 U1;&G  
*/ z7_h$v  
public class SortUtil { \C<'2KZR,  
public final static int INSERT = 1; 6L<QKE=  
public final static int BUBBLE = 2; %Y-5L;MI  
public final static int SELECTION = 3; e'A 1%g)  
public final static int SHELL = 4; #b9V&/ln  
public final static int QUICK = 5; Mc~L%5  
public final static int IMPROVED_QUICK = 6; 7 MS-Gs|  
public final static int MERGE = 7; |,Kk#`lW<f  
public final static int IMPROVED_MERGE = 8; :MihVLF  
public final static int HEAP = 9; ~%L=<TBAc  
43,baeG  
public static void sort(int[] data) { ] ^53Qbrv  
sort(data, IMPROVED_QUICK); tGJJ|mle>  
} |OiM(E(  
private static String[] name={ 5)C`W]JE  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &3$FkU^F6  
}; j6WDh}#  
\Mzr[dI  
private static Sort[] impl=new Sort[]{ N4l}5(e  
new InsertSort(), aTwBRm  
new BubbleSort(),  ]&OI.p  
new SelectionSort(), *?pnTQs^  
new ShellSort(), YYhN>d$  
new QuickSort(), ue1g(;  
new ImprovedQuickSort(), n0QHrIf{  
new MergeSort(), b!<)x}-t>  
new ImprovedMergeSort(), a+^,EY  
new HeapSort() 9@8'*a{`m  
}; z |8zNt Ug  
VG_xNM  
public static String toString(int algorithm){ }5AA}=  
return name[algorithm-1]; BtrMv6  
} @E4ya$A)F  
Q`!^EyRA:^  
public static void sort(int[] data, int algorithm) { ~t1?oJ  
impl[algorithm-1].sort(data); DQ@M?~1hp  
} EXsVZg"#  
'cqY-64CJZ  
public static interface Sort { SLz;5%CPV  
public void sort(int[] data); P@5}}vwS  
} lnGg1/  
D*/fY=gK  
public static void swap(int[] data, int i, int j) { g:s|D hE[  
int temp = data; E/<n"'0ek  
data = data[j]; \]0#jI/:  
data[j] = temp; C;?<WtH  
} \dbaY:(  
} d;nk>6<|  
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