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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。 GWhZ Mj  
插入排序: k`t'P6 bU  
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package org.rut.util.algorithm.support; r:q#l~;^  
8iCI s=06  
import org.rut.util.algorithm.SortUtil; sH]AB =_  
/** *HC8kD a%$  
* @author treeroot Y1~SGg7(@  
* @since 2006-2-2 =j{jylC  
* @version 1.0 H>r-|*n  
*/ Wf?sJ`.%b  
public class InsertSort implements SortUtil.Sort{ ZChY:I$<  
e!8_3BE  
/* (non-Javadoc) R*y[/Aw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .~8+s.y  
*/ :+5afv}  
public void sort(int[] data) { gv,T<A?Z2  
int temp; <\8   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EzyIsp> _  
} G225Nz;Y*  
} <8bO1t^*  
} ~ /[Cgh0  
N|j. @K  
} RmQt%a7\{  
 LJ))  
冒泡排序:  )L!R~F C  
'2tEKVb  
package org.rut.util.algorithm.support; cg.e(@(  
vraU&ze\1  
import org.rut.util.algorithm.SortUtil; q+z\Y?  
;!}SgzSH}  
/** S3'g(+S  
* @author treeroot U,M,E@  
* @since 2006-2-2 NQJqS?^W&M  
* @version 1.0 p^:Lj9Qax  
*/ [w/t  
public class BubbleSort implements SortUtil.Sort{ J*Hn/m  
5:d2q<x:{  
/* (non-Javadoc) 5{a( +'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v(h Xk]S  
*/  =s]{  
public void sort(int[] data) { v6VhXV6$|  
int temp; i6CYD  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "6d bRo5%  
if(data[j] SortUtil.swap(data,j,j-1); Zz-;jkX)  
} \k=Qq(=  
} O}-7 V5  
} {|h"/   
} Mh|`XO.5I  
w3N%J>4_E  
} DRoxw24  
$te,\$&}  
选择排序: \i+h P1 mz  
,m?D\Pru  
package org.rut.util.algorithm.support; [J`G`s!  
F"H!CJJu&  
import org.rut.util.algorithm.SortUtil; DG\YZV4  
Uq.~3V+u  
/** N]}+F w\5  
* @author treeroot 5ecz'eA%  
* @since 2006-2-2 0_ \ g  
* @version 1.0 h /QP=Zd  
*/ :\J bWj_j  
public class SelectionSort implements SortUtil.Sort { N^]>R :Stu  
4Jr[8P0/A9  
/* X@&uu0JJ  
* (non-Javadoc) /&d`c=nH  
* sri#L+I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #6jwCEo=V  
*/ CD1=2  
public void sort(int[] data) { _0["J:s9  
int temp; /A.i5=k  
for (int i = 0; i < data.length; i++) { PL$F;d  
int lowIndex = i; UMwMXmZNJ  
for (int j = data.length - 1; j > i; j--) { ~ p.W*skD  
if (data[j] < data[lowIndex]) { P i!r}m  
lowIndex = j; )hW {>Y3x  
} }.) 43(>]  
} %QgAilj,  
SortUtil.swap(data,i,lowIndex); 2P_^@g  
} $F7gH  
} .GN$H>')  
"EYj Y->  
} Mgs|*u-5  
V8$bPVps  
Shell排序: u2B W]T]  
,M&0<k\  
package org.rut.util.algorithm.support; }l?_Cfvu  
]3,.g)U*m  
import org.rut.util.algorithm.SortUtil; \y`3LhY  
YIQ]]q8R!L  
/** R(83E B~_  
* @author treeroot <1+6O[>{  
* @since 2006-2-2 ~: <@`  
* @version 1.0 !b->u_  
*/ 7 eQoc2X2  
public class ShellSort implements SortUtil.Sort{ v6-~fcX0G  
' xZPIj+  
/* (non-Javadoc) K}<!{/fi)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %)Uvf`Xhh4  
*/ Z)i1?#  
public void sort(int[] data) { ([CnYv  
for(int i=data.length/2;i>2;i/=2){ [F)/mN  
for(int j=0;j insertSort(data,j,i); 62l0 Z-  
} |id79qY7g  
} E:4P1,%01+  
insertSort(data,0,1); s!/holu  
} FgQ_a/*  
fk7Cf"[w  
/** NZC='3Uz  
* @param data B/D\gjb  
* @param j ,V]A63J  
* @param i RvSq KW8  
*/ +F~0\#d  
private void insertSort(int[] data, int start, int inc) { &<V_[Wh"  
int temp; ;#yu"6{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \_Kt6=  
} ?hJsN  
} uWB:"&!^  
} T E&Q6  
/1W7<']>xV  
} n *i'vtQ8  
ow+Dd[i  
快速排序: y^QYl ZO  
-j`!(IJ  
package org.rut.util.algorithm.support; Wbn[Q2h5  
( OyY_`  
import org.rut.util.algorithm.SortUtil; f>)Tq'  
n;kciTD%wK  
/** [Ql?Y$QB`4  
* @author treeroot b4)*<Zp`  
* @since 2006-2-2 QI#*5zm  
* @version 1.0 |pH* CCA  
*/ 'y6!%k*  
public class QuickSort implements SortUtil.Sort{ {y&\?'L'  
a()6bRc~T  
/* (non-Javadoc) BgkB x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Z0CF~Y5  
*/ 9]L!.  
public void sort(int[] data) { C9mzg  
quickSort(data,0,data.length-1); ;o)=XEh8P  
} ]]uzl0LH  
private void quickSort(int[] data,int i,int j){ :PD`PgQ  
int pivotIndex=(i+j)/2; `\ef0  
file://swap }(+=/$C"#  
SortUtil.swap(data,pivotIndex,j); P~\a)Szy  
].-J.  
int k=partition(data,i-1,j,data[j]); up &NCX  
SortUtil.swap(data,k,j); d{2 y/  
if((k-i)>1) quickSort(data,i,k-1); c+8>EU AW  
if((j-k)>1) quickSort(data,k+1,j); Oj"pj:fB  
 !u53 3  
} 1<W4>~,wj  
/** ,qe]fo >  
* @param data 5BU%%fBJ.  
* @param i v LBee>$  
* @param j \,l.p_<  
* @return 8|5Gv  
*/ {b|3]_-/  
private int partition(int[] data, int l, int r,int pivot) { yE.495  
do{ )l#%.Z9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); aYaG]&hb  
SortUtil.swap(data,l,r); w>6"Sc7oc2  
} >[|GC/C  
while(l SortUtil.swap(data,l,r); s%N`  
return l; Mhv1K|4s  
} rL%]S&M9  
>@)*S n9"  
} HJfQ]p'nK2  
V8sH{R-  
改进后的快速排序: GUu\dl9WA'  
~?AC:  
package org.rut.util.algorithm.support; O t *K+^I  
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import org.rut.util.algorithm.SortUtil; 3$?9uMl#  
;|>q zx  
/** 0i8[=  
* @author treeroot 7P/?wv9+n*  
* @since 2006-2-2 sf |oNOz  
* @version 1.0 V3>f*Z)xn  
*/ s[G |q5n  
public class ImprovedQuickSort implements SortUtil.Sort { Wl& >6./{  
a^*cZ?Ta  
private static int MAX_STACK_SIZE=4096; <XQN;{xSa  
private static int THRESHOLD=10; AI1@-  
/* (non-Javadoc) t] r,9df'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T-a&e9B  
*/ ^))PCn_zb  
public void sort(int[] data) { u}K5/hC  
int[] stack=new int[MAX_STACK_SIZE]; 35Ai;mU'  
aBXYri  
int top=-1; ;cv.f>Cm  
int pivot; l|08  
int pivotIndex,l,r; :y+B;qw  
6=ZRn gQ  
stack[++top]=0; ^M`>YOU2+  
stack[++top]=data.length-1; xwTijSj  
`z9)YH  
while(top>0){ LP^p~5Az  
int j=stack[top--]; VHXI@UT*  
int i=stack[top--]; "gXxRHTX  
#4P8Rzl$/  
pivotIndex=(i+j)/2; > I$B=  
pivot=data[pivotIndex]; K#qoR/:  
&`9j)3^J.  
SortUtil.swap(data,pivotIndex,j); e >L5.~i  
i\t753<Ys  
file://partition xS= _yO9-  
l=i-1; ]3n, AHA  
r=j; c3=-Mq9Q  
do{ [J a)<!]<  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _1I K$gb[  
SortUtil.swap(data,l,r); @%6)^]m}r  
} 't +"k8  
while(l SortUtil.swap(data,l,r); r_b8,I6{]  
SortUtil.swap(data,l,j); v6wRME;JA  
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if((l-i)>THRESHOLD){ 3p:=xL  
stack[++top]=i; Z5((1J9  
stack[++top]=l-1; jCU=+b=  
} d{er |$E?  
if((j-l)>THRESHOLD){ B4`2.yRis  
stack[++top]=l+1; qBT_! )h   
stack[++top]=j; >vUB%OLyP  
} }5Yj  
iaY5JEV:CA  
} aXMv(e+  
file://new InsertSort().sort(data); yC0C`oC  
insertSort(data); ZU=,f'bU  
} r eGm>  
/** ^'m\D;  
* @param data *6:v}#b[  
*/  b<[jaI0  
private void insertSort(int[] data) { xC<=~(  
int temp; qs=Gj?GwGQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZB-QABn  
} Fj S%n$  
} ,mBZ`X@N  
} ZAMeqPt  
DW#Bfo  
} ,Kuk_@(}5~  
W%TQYR  
归并排序: +wipfL~&S  
w#oGX  
package org.rut.util.algorithm.support; :*^:T_U  
Vzpt(_><  
import org.rut.util.algorithm.SortUtil; 59.$ULQVMY  
*'6s63)I2  
/** 9X(Sk%  
* @author treeroot vB^uxdt|m  
* @since 2006-2-2 <3b'm*  
* @version 1.0 ^V[/(Lq  
*/ )CJES!! W  
public class MergeSort implements SortUtil.Sort{ #,G1R7  
1Q]Rd  
/* (non-Javadoc) |+98h&U~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z.quh;  
*/ _1ew(x2J  
public void sort(int[] data) { 5UE409Gn'  
int[] temp=new int[data.length]; <$%ql'=  
mergeSort(data,temp,0,data.length-1); 9z:K1  
} :Zza)>l  
kB o;h.[l  
private void mergeSort(int[] data,int[] temp,int l,int r){ xq2V0Jp1u  
int mid=(l+r)/2; 1pK6=-3w3  
if(l==r) return ; Q $]YD pCM  
mergeSort(data,temp,l,mid); v,{h:  
mergeSort(data,temp,mid+1,r); KF_?'X0=  
for(int i=l;i<=r;i++){ f-4.WW2FN  
temp=data; +td<{4oq8  
} F+m[&MKL  
int i1=l; b(l0js  
int i2=mid+1; C6|(ktt  
for(int cur=l;cur<=r;cur++){ >L gVj$Z  
if(i1==mid+1) X1oGp+&  
data[cur]=temp[i2++]; !DPF7x(-{  
else if(i2>r) 61} i5o  
data[cur]=temp[i1++]; /t*YDWLg  
else if(temp[i1] data[cur]=temp[i1++]; OiF{3ae(  
else i\)3l%AK]T  
data[cur]=temp[i2++]; Ql8bt77eI-  
} );Z]SGd  
} B8H75sz  
YGp)Oy}:  
} b HE7yv [  
'f+NW &   
改进后的归并排序: dy2rkV.z  
NgVR,G|1  
package org.rut.util.algorithm.support; R(G\wqHUT3  
_1aGtX|W  
import org.rut.util.algorithm.SortUtil; ?sXG17~Bm  
=\Iu$2r`  
/** z<B CLP  
* @author treeroot ='}#`',  
* @since 2006-2-2 RP! X8~8  
* @version 1.0 yzR=A%V8A  
*/ id?"PD"%  
public class ImprovedMergeSort implements SortUtil.Sort { *)'Vvu<  
[k$efwJ  
private static final int THRESHOLD = 10; =xL)$DTg)  
_7"5wB?|+  
/* /aYpIMi9}  
* (non-Javadoc) RF?DtNuq  
* L&kr{7q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X`:'i?(yj  
*/ <^8*<;PaG  
public void sort(int[] data) { 4r&f%caU  
int[] temp=new int[data.length]; XN#&NT{t}  
mergeSort(data,temp,0,data.length-1); + BL{@,zr  
} $ J1f.YE  
sZg6@s=  
private void mergeSort(int[] data, int[] temp, int l, int r) { ;JT(3yK4>p  
int i, j, k; &w85[zs  
int mid = (l + r) / 2; D//=m=  
if (l == r) !:3.D,  
return; &eQJfc\a  
if ((mid - l) >= THRESHOLD) O("Uq../3  
mergeSort(data, temp, l, mid); .Q* 'r& n  
else gmP9j)V6  
insertSort(data, l, mid - l + 1); 19t{|w<  
if ((r - mid) > THRESHOLD) z)-c#F@%  
mergeSort(data, temp, mid + 1, r); W2]TRO  
else @0NJ{  
insertSort(data, mid + 1, r - mid);  |yKud  
 &;c>O  
for (i = l; i <= mid; i++) {  )h_8vO2  
temp = data; (dqCa[  
} =-#G8L%Q  
for (j = 1; j <= r - mid; j++) { QR0(,e$Dl  
temp[r - j + 1] = data[j + mid]; h/)_) r.x  
} asVX82<  
int a = temp[l]; hH>``gK  
int b = temp[r]; G$bJ+  
for (i = l, j = r, k = l; k <= r; k++) { !yJICjXj  
if (a < b) { wRvb8F 0  
data[k] = temp[i++]; 3@<zg1.9-  
a = temp; 0N;%2=2_E  
} else { -SCM:j%h  
data[k] = temp[j--]; ~F!,PM/  
b = temp[j]; H:QhrL+7_  
} Z>P*@S,6G  
} $_Nf-:D*  
} w0lT%CPx  
fCw*$:O  
/** ;11x"S  
* @param data ru9zTZZD  
* @param l vScjq5 "p  
* @param i r!GW= u'  
*/ 8b(!k FxD  
private void insertSort(int[] data, int start, int len) { f&KdlpxKv  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,$lemH1d  
} i=S~(gp  
} &,:h)  
} `A@w7J'  
} 9902+pW  
Fhf<T`  
堆排序: EGVM)ur  
mtAE  
package org.rut.util.algorithm.support; ?C-Towo=i  
78 f$6J q  
import org.rut.util.algorithm.SortUtil; kz} R[7  
U7h(`b  
/** 3gEMRy*+  
* @author treeroot 9=`Wp6Gmn  
* @since 2006-2-2 p@ NaD=9  
* @version 1.0 pzZk\-0R  
*/ YJV%a  
public class HeapSort implements SortUtil.Sort{ .a'f|c6  
7gF"=7{-  
/* (non-Javadoc) yx38g ca  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zeb=8 Dg :  
*/ tq1CwzRX  
public void sort(int[] data) { > L2HET  
MaxHeap h=new MaxHeap(); _}xd}QW  
h.init(data); I:cg}JZ>|  
for(int i=0;i h.remove(); Y f@e=:  
System.arraycopy(h.queue,1,data,0,data.length); L{-LX= G^  
} =c.5874A`  
fWnD\mx?0  
private static class MaxHeap{ ]6r;}1c  
zi9[)YqxPH  
void init(int[] data){ g4p  
this.queue=new int[data.length+1]; ] }|byo  
for(int i=0;i queue[++size]=data; SRIA*M.B}  
fixUp(size); ypOLp SYk  
} kYzKU2T\W  
} >Gml4vGK  
%QmxA 7fW  
private int size=0; Zdc63fllM  
W,5Hx1z R  
private int[] queue; W !w,f;  
XRx+Dddt;  
public int get() { T;TA7{B  
return queue[1]; @gC=$A#  
} l e4?jQQ@L  
+ZMls [  
public void remove() { @mP]*$00  
SortUtil.swap(queue,1,size--); RGKYW>$0RR  
fixDown(1); )Z 9E=%  
} 8Me:Yp_Xt  
file://fixdown [epi#]m  
private void fixDown(int k) { *a;@*  
int j; % 2$/JZ  
while ((j = k << 1) <= size) { >{gPN"S"a  
if (j < size %26amp;%26amp; queue[j] j++; S8[=S  
if (queue[k]>queue[j]) file://不用交换 Dl(3wgA  
break; ^D eERB  
SortUtil.swap(queue,j,k); R0ID2:i]F  
k = j; 58\&/lYW  
} XR2~Q)@  
} TxjYrzC  
private void fixUp(int k) { nRL. ppUI  
while (k > 1) { 6tHO!`}1  
int j = k >> 1; M5nWVK7c  
if (queue[j]>queue[k]) )c n+1R  
break; (wIzat  
SortUtil.swap(queue,j,k); )a 9 ]US^  
k = j; >(uZtYM\j  
} y&}E~5O  
} *4+3ObA  
Vtc36-\1*  
} %VYAd)gC  
x-OA([;/  
} f=C,e/sw  
eAv4FA4g  
SortUtil: wO ?+Nh  
|(5W86C,ju  
package org.rut.util.algorithm; kpL@P oQ/r  
];'v8)Y  
import org.rut.util.algorithm.support.BubbleSort; \%PaceH  
import org.rut.util.algorithm.support.HeapSort; 1XM^8 .;  
import org.rut.util.algorithm.support.ImprovedMergeSort; ku$$ 1xq  
import org.rut.util.algorithm.support.ImprovedQuickSort; Ya>oCr}K  
import org.rut.util.algorithm.support.InsertSort; Gj"7s8(/K|  
import org.rut.util.algorithm.support.MergeSort; t!*+8Q !e  
import org.rut.util.algorithm.support.QuickSort; d \x7Zw>  
import org.rut.util.algorithm.support.SelectionSort; 'WaPrCw@Mf  
import org.rut.util.algorithm.support.ShellSort; FZ!`B]]le,  
O"Ku1t!  
/** bM8If"  
* @author treeroot mPI8_5V8]  
* @since 2006-2-2 5N%93{L  
* @version 1.0 )* 4fzo  
*/ /}Jj  
public class SortUtil { ono4U.C9  
public final static int INSERT = 1; PH"n{lW.T  
public final static int BUBBLE = 2; 5>BK%`  
public final static int SELECTION = 3; >2bKSh  
public final static int SHELL = 4; PV|uPuz  
public final static int QUICK = 5; [2"<W! p  
public final static int IMPROVED_QUICK = 6; T]2q?; N  
public final static int MERGE = 7; :'#TCDlOb  
public final static int IMPROVED_MERGE = 8; TXe$<4"  
public final static int HEAP = 9; XsnF~)YW  
LP MU8Er  
public static void sort(int[] data) { J[f;Xlh  
sort(data, IMPROVED_QUICK); :0s]U_h  
} x|yEt O&  
private static String[] name={ .e=C{  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" A.hd Kl  
}; 1V8-^  
{?'fyEeg  
private static Sort[] impl=new Sort[]{ R|wGU)KEc'  
new InsertSort(), N[kwO1  
new BubbleSort(), iD<(b`S  
new SelectionSort(), 3p0LN'q]A  
new ShellSort(), %Gt .m  
new QuickSort(), J,Ks0M A  
new ImprovedQuickSort(), _YcA+3ZL  
new MergeSort(), f=)2f =  
new ImprovedMergeSort(), (SKVuR%Jj  
new HeapSort() aN"DkUYZM  
}; H$I =W>;  
L!=QR8?@E  
public static String toString(int algorithm){ ~gGZmT b  
return name[algorithm-1]; 4 :U?u  
} BJ% eZ.  
! u:Weoz  
public static void sort(int[] data, int algorithm) { qUly\b 47  
impl[algorithm-1].sort(data); 7Hm3;P.  
} (V4 ~`i4V  
&hRvol\J  
public static interface Sort { xO-+i\ ZV  
public void sort(int[] data); y~)1 1]'>  
} =JJL[}a|  
liXdNk8  
public static void swap(int[] data, int i, int j) { wE~V]bmtW  
int temp = data; ;qrB\j"  
data = data[j]; Dk?\)lD`  
data[j] = temp; 4'0Dr++  
} qK)73eNSR  
} 66fO7OJs  
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