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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。 ecr pv+  
插入排序: 75{QBlf<  
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package org.rut.util.algorithm.support; B&tl6?7h  
$ZE OE8.\  
import org.rut.util.algorithm.SortUtil; ]92@&J0w  
/** sR#( \  
* @author treeroot 1(C%/g#"  
* @since 2006-2-2 8TuOf(qE  
* @version 1.0 Z,ag5 w`]L  
*/ C,K P!B{  
public class InsertSort implements SortUtil.Sort{ Zr`:A$  
N2C^'dFj  
/* (non-Javadoc) W[+E5I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oZ!rK/qoA  
*/ 4j/8Otn  
public void sort(int[] data) { [Q)lJTs  
int temp; Byon2|nf7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OrHnz981K  
} lB,.TK  
} M@ mCBcbN  
} Ww@R ewo  
IX-ir  
} VTD'D+ t  
m\j'7mZ1  
冒泡排序: 6N6d[t"  
8W#whK2El  
package org.rut.util.algorithm.support; (0^u  
:)bm+xWFF  
import org.rut.util.algorithm.SortUtil; is`le}$^y  
5y@JMQSO  
/** Uw4KdC  
* @author treeroot 3<?#*z4]_  
* @since 2006-2-2 I lvjS^j  
* @version 1.0 <0pBu7a  
*/ O7:JG[tR*  
public class BubbleSort implements SortUtil.Sort{ Haiuf)a  
#m|AQr|  
/* (non-Javadoc) 6f0 WN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NO"=\Zn6  
*/ HJM-;C](  
public void sort(int[] data) { ]*Zg(YA  
int temp; jF{zcYU  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Z&YW9de@  
if(data[j] SortUtil.swap(data,j,j-1); u|APx8?"o  
} N }Z"$4  
} ~- JkuRJ\  
} &R>x;&Gj  
} K5'@$Km  
W~FcU+a  
} .\qZkk}2l  
<[kdF")  
选择排序: rs'~' Y  
IC37f[Q  
package org.rut.util.algorithm.support; DTPYCG&%  
L<*wzl2Go  
import org.rut.util.algorithm.SortUtil; or>5a9pj  
*tO7A$LDT  
/** 79=w]y  
* @author treeroot o|(-0mWBQA  
* @since 2006-2-2 C%0|o/Wi  
* @version 1.0 <e)3 j6F!  
*/ &p`RKD  
public class SelectionSort implements SortUtil.Sort { 5 J61PuH   
Sr/"'w;  
/* !ai, \  
* (non-Javadoc) ;)~loa1\  
* m^%[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0k0 y'1SL  
*/ G)M9to  
public void sort(int[] data) { MW6d-  
int temp; S2h?Q $e3  
for (int i = 0; i < data.length; i++) { aB+Ux< -  
int lowIndex = i; PJsiT4<  
for (int j = data.length - 1; j > i; j--) { },e f(  
if (data[j] < data[lowIndex]) { D~G24k6b3  
lowIndex = j; ?,O{,2}  
} D*I%=);B_  
} ?(n|ykXwc  
SortUtil.swap(data,i,lowIndex); SZea[~ &  
} 1|Us"GQ (n  
} &AG,]#  
/9QI^6& SX  
} $ohIdpZLH2  
a$l  
Shell排序: +K])&}Dw  
)E'iC  
package org.rut.util.algorithm.support; g,@0 ;uVq  
;3-5U&Axt  
import org.rut.util.algorithm.SortUtil; Re0ma%~LP  
*am.NH\  
/** F$N"&<[c  
* @author treeroot ;|5m;x/a  
* @since 2006-2-2 S9U,so?  
* @version 1.0 Kzfa4C  
*/ )#N)w5DU  
public class ShellSort implements SortUtil.Sort{ " +'E  
c~K^ooS-  
/* (non-Javadoc) PTXy:>]M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dd@qk`Zl&A  
*/ 06|+ _  
public void sort(int[] data) { 9# IKb:9k  
for(int i=data.length/2;i>2;i/=2){ al.~[T-O+  
for(int j=0;j insertSort(data,j,i); y+hC !-  
} S~.:B2=5K  
} nb9qVuAGU  
insertSort(data,0,1); xv4_q-r[  
} lU`]yL  
<O>1Y09C/  
/** Po#;SG#Ee  
* @param data ,W;\6"Iwx'  
* @param j w O;\,zU  
* @param i :,X,!0pWRp  
*/ 5zWxI]4d\  
private void insertSort(int[] data, int start, int inc) { }SR}ET&z  
int temp; VImcW;Xa  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C0|<+3uND=  
} /p+ (_Y  
} 7@NAky(  
} 7aUk?Hf  
T0J"Wr>WY  
} O]o `! c  
B{^o}:e  
快速排序: HS =qK  
l8/ tR  
package org.rut.util.algorithm.support; \$n?J(N  
YKk?BQ"  
import org.rut.util.algorithm.SortUtil;  c %w h  
/ldE (!^n  
/** dq}60  
* @author treeroot %8NAWDb{  
* @since 2006-2-2 #Cks&[!c  
* @version 1.0 [XK Ke  
*/ 2 UU5\ jV6  
public class QuickSort implements SortUtil.Sort{ |!NKKvf  
L s6P<"V  
/* (non-Javadoc) k7yQEU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1bs 8fUPB3  
*/ Rd7Xs  
public void sort(int[] data) { ,iY/\ U''  
quickSort(data,0,data.length-1); ~0aWjMc(>  
} _-$O6eZ  
private void quickSort(int[] data,int i,int j){ d~1Nct$:  
int pivotIndex=(i+j)/2; pCS2sq8RC  
file://swap 6m"_=.k%  
SortUtil.swap(data,pivotIndex,j); %T4htZa  
b1Bu5%bt,:  
int k=partition(data,i-1,j,data[j]); b0|q@!z>  
SortUtil.swap(data,k,j); i>#[*.|P  
if((k-i)>1) quickSort(data,i,k-1); qfE>N?/  
if((j-k)>1) quickSort(data,k+1,j); =LEKFXqM  
!g{9]"Z1T  
} f|G,pDL x  
/** <8nl}^d5  
* @param data FjYih>  
* @param i %y ;E1pva  
* @param j (jv!q@@2C.  
* @return Ta^l1]9.*  
*/ chv0\k"'  
private int partition(int[] data, int l, int r,int pivot) { N% /if  
do{ *vqlY[2Ax  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `oQ)qa_  
SortUtil.swap(data,l,r); V~ph1Boz2  
} @|kBc.(]  
while(l SortUtil.swap(data,l,r); $Ay j4|_-  
return l; \lwYDPY:  
} x-O9|%aRJ  
:a3  +f5  
} `\LhEnIwu  
<;}jf*A  
改进后的快速排序: a'=C/ s+  
gRA}sF  
package org.rut.util.algorithm.support; 72@lDY4cE  
c#X9d8>  
import org.rut.util.algorithm.SortUtil; +rse,b&U(  
(GB2("p`  
/** 9fp@d  
* @author treeroot 2]W"sT[  
* @since 2006-2-2 a-w=LpVM  
* @version 1.0 Ba==Ri8$  
*/ Gu} `X23  
public class ImprovedQuickSort implements SortUtil.Sort { `|@#~  
A;VjMfoB  
private static int MAX_STACK_SIZE=4096; &Ohm]g8{2  
private static int THRESHOLD=10; FRa@T N/Ic  
/* (non-Javadoc) P9h]B u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rrBu6\D  
*/ 1d)wE4c=Z  
public void sort(int[] data) { wO:!B\e  
int[] stack=new int[MAX_STACK_SIZE]; f@U\2r  
5A(zQ'6  
int top=-1; ]l\'1-/  
int pivot; -=_bXco}  
int pivotIndex,l,r; P{2V@ <}  
o|#Mq"od  
stack[++top]=0; PR rf$& u  
stack[++top]=data.length-1; 2D|2/ >[  
Omy4Rkj8bh  
while(top>0){ b=[gK|fu  
int j=stack[top--]; `;Qw/xl_N  
int i=stack[top--]; t<S]YA~N'  
e45gjjts  
pivotIndex=(i+j)/2; -WiOs;2~/  
pivot=data[pivotIndex]; YNV!(>\GE  
LB*qL  
SortUtil.swap(data,pivotIndex,j); nd)Z0%xo  
h!# (.P  
file://partition wcGI2aflD  
l=i-1; # D8Z~U,-  
r=j; h_Ky2IB$  
do{ 90JD`Nz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l !VPk"s  
SortUtil.swap(data,l,r); g%()8QxE1  
} l(X8 cHAi  
while(l SortUtil.swap(data,l,r); a#H2H`%  
SortUtil.swap(data,l,j); UUb n7&  
[KrWL;[1 <  
if((l-i)>THRESHOLD){ #sl_ BC9  
stack[++top]=i; c`:hEQs  
stack[++top]=l-1; m# #( uSh  
} 0ox 8_l  
if((j-l)>THRESHOLD){ ;{1J{-EA  
stack[++top]=l+1; jtqH3xfy  
stack[++top]=j; e1Kxqw7  
} "-aak )7w  
JNhHQvi\  
} HU[a b  
file://new InsertSort().sort(data); 0Y rdu,c  
insertSort(data); RiHOX&-7  
} Wn;B~  
/** q-c9YOz_  
* @param data Z9cg,#(D  
*/ [e1kfw  
private void insertSort(int[] data) { /Mk85C79  
int temp; @**@W[EM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a& >(*PQ  
} ua$H"(#c  
} >~O36q^w  
} hw[jVx  
+$]eA'Bh@  
} TBq;#+1W  
$@m)8T  
归并排序: ;8WgbR)ZLU  
qyXx`'e  
package org.rut.util.algorithm.support; !'uLV#YEZ  
>r Nff!Ow  
import org.rut.util.algorithm.SortUtil; Y|ONCc  
diXb8L7B;  
/** Fv!zS.)`  
* @author treeroot rBBA`Ut@F  
* @since 2006-2-2  y!6+jrI  
* @version 1.0 mHTZ:84  
*/ 4%l @   
public class MergeSort implements SortUtil.Sort{ f1R&Q  
rNzsc|a:  
/* (non-Javadoc) 1rhsmcE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1d4 9z9F  
*/ @8zp(1.  
public void sort(int[] data) { .54E*V1  
int[] temp=new int[data.length]; C+ {du^c$  
mergeSort(data,temp,0,data.length-1); *We.?"X'].  
} ?O1:-vpZ  
f"XFf@!  
private void mergeSort(int[] data,int[] temp,int l,int r){ k< b`v&G  
int mid=(l+r)/2; u15-|i{y7  
if(l==r) return ; F 8*e  
mergeSort(data,temp,l,mid); Eyw)f>  
mergeSort(data,temp,mid+1,r); bkmW[w:M  
for(int i=l;i<=r;i++){ xw60l&s.\L  
temp=data; l!2hwRR  
} 8?qEv,W  
int i1=l; eF5?4??  
int i2=mid+1; RusC5\BUX  
for(int cur=l;cur<=r;cur++){ Lo, z7"8  
if(i1==mid+1) hK=\O)  
data[cur]=temp[i2++];  ESOuDD2<  
else if(i2>r) <0[{Tn  
data[cur]=temp[i1++]; <:#O*Y{  
else if(temp[i1] data[cur]=temp[i1++]; 1VW;[ ocQ  
else AF{k^^|H  
data[cur]=temp[i2++]; K`.wj8zGY  
} 1](5wK-Z  
} F",]*> r  
7?6?`no~JJ  
} )k5lA=(Yr+  
/a7tg+:  
改进后的归并排序: ,e"A9ik#  
.y7&!a35  
package org.rut.util.algorithm.support; w, 0tY=h6  
)"7hyW5  
import org.rut.util.algorithm.SortUtil; KZ ezA4  
VdpkE0  
/** YxMOr\B  
* @author treeroot ]a% *$TF  
* @since 2006-2-2 T!6H5>zA  
* @version 1.0 1j*I`xZ  
*/ '[shY  
public class ImprovedMergeSort implements SortUtil.Sort { _E5%Px5>L  
QZufQRfr{  
private static final int THRESHOLD = 10; fgFBOpG%Gq  
'"}|'J  
/* $)| l#'r  
* (non-Javadoc) W(*:8}m,p  
* e_J_rx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]pLQ;7f7D  
*/ cmDskQ:  
public void sort(int[] data) { E-,74B&H  
int[] temp=new int[data.length]; ]d"4G7mu`l  
mergeSort(data,temp,0,data.length-1); iKB8V<[\T  
} +Q, 0kv  
bhXH<=  
private void mergeSort(int[] data, int[] temp, int l, int r) { .vRLK  
int i, j, k; &J|3uY,'j  
int mid = (l + r) / 2; 3j.Ft*SV  
if (l == r) &fYx0JT  
return; SdUtAC2  
if ((mid - l) >= THRESHOLD) *(ex:1sW  
mergeSort(data, temp, l, mid); qE6:`f  
else ie$QKoE  
insertSort(data, l, mid - l + 1); 8?']W\)  
if ((r - mid) > THRESHOLD) HMNjQ 1y  
mergeSort(data, temp, mid + 1, r); * [*#cMZ   
else oS)0,p  
insertSort(data, mid + 1, r - mid); zypZ3g{vz  
gf+Kr02~  
for (i = l; i <= mid; i++) { 5EIhCbA  
temp = data; G8`q-B}q  
} LGT\1u  
for (j = 1; j <= r - mid; j++) { e , zR  
temp[r - j + 1] = data[j + mid]; /:>f$k4~h  
} Ygn"7  
int a = temp[l]; 2F-!SI  
int b = temp[r]; lj.z>  
for (i = l, j = r, k = l; k <= r; k++) { BQf}S +  
if (a < b) { ]}9cOb%I  
data[k] = temp[i++]; YZ\$b=-  
a = temp; !B?/6XRUx  
} else { NFGC.<  
data[k] = temp[j--]; N s9cx  
b = temp[j]; !U#kUj:4I  
} `"[VkQFB/  
} aPB %6c=  
} o_U=]mEDY  
9;Ezm<VQ  
/** 'DF3|A],  
* @param data !-r@_tn|  
* @param l mLD0Lu_Ob3  
* @param i zsI0Q47\  
*/ T4T_32`XR  
private void insertSort(int[] data, int start, int len) { '9GHmtdO,  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); VS^%PM#:/  
} ,*0>CBJvv  
} xk86?2b{)  
} mKZ?H$E%%  
} O7j$bxk/^  
J{$C}8V  
堆排序: !.L%kw7z  
[7]p\' j  
package org.rut.util.algorithm.support; |LKhT4rE  
.CI]8O"3y  
import org.rut.util.algorithm.SortUtil; ~=%eOoZP;c  
8x'rNb  
/** df#DKV:  
* @author treeroot pw:<a2.  
* @since 2006-2-2  yyk[oH-Q  
* @version 1.0 (|ga#%iI  
*/ ^`YSl*:  
public class HeapSort implements SortUtil.Sort{ r0QjCFSF=  
FqsG#6|x  
/* (non-Javadoc) 3z: rUhA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qYIBP?`g  
*/ EBw}/y{Kt  
public void sort(int[] data) { )aqu f<u@  
MaxHeap h=new MaxHeap(); BmUEo$w  
h.init(data); 4cJ^L <  
for(int i=0;i h.remove(); 9`.b   
System.arraycopy(h.queue,1,data,0,data.length); 8nES=<rz  
} n_v c}ame  
'. atbl  
private static class MaxHeap{ WKBPqfC  
gU>Y  
void init(int[] data){ a%ec: %  
this.queue=new int[data.length+1]; 7H[#  
for(int i=0;i queue[++size]=data; /.05rTpp  
fixUp(size); QfU 0*W?r  
} GfQMdLy\Z  
} 5#d"]7  
~n]:f7?I  
private int size=0; t>&$_CSWK  
 ceVej'  
private int[] queue; ;^}cZ  
lZ^XZjwoM  
public int get() { 2K, 1wqf'  
return queue[1]; [ $.oyjd  
} H|F>BjXn5  
\R&`bAdk  
public void remove() { K]@6&H-b|  
SortUtil.swap(queue,1,size--); 2|EH Ny!  
fixDown(1); BAm H2"  
} 6$SsdT|8B  
file://fixdown D8`,PXtV  
private void fixDown(int k) { zfi{SO l  
int j; M0c"wi@S_  
while ((j = k << 1) <= size) { 5/:Zj,41{  
if (j < size %26amp;%26amp; queue[j] j++; L4.yrA-]C%  
if (queue[k]>queue[j]) file://不用交换 o [ar.+[  
break; \C}tK,79  
SortUtil.swap(queue,j,k); :+]6SC0ql  
k = j; I$qL=  
} a<!g*UVL0M  
} F8b*Mt}p  
private void fixUp(int k) { `mw@"  
while (k > 1) { Gpe h#Q4x  
int j = k >> 1; QHMXQyr(  
if (queue[j]>queue[k]) ~DqNA%Mb  
break; o1zc`Ibd  
SortUtil.swap(queue,j,k); K* [cJcY+  
k = j; 6gakopZO  
} 'y-IE#!5  
} uT]_pKm  
5?9}^s4  
} Vl^jTX5N  
{!^HG+  
} U@f3V8CPy  
.RJvu$U2j  
SortUtil: aM?7'8/  
'-w G  
package org.rut.util.algorithm; J5J3%6I  
B+zq!+ HJ  
import org.rut.util.algorithm.support.BubbleSort; c~R ElL  
import org.rut.util.algorithm.support.HeapSort; \FVR'A1  
import org.rut.util.algorithm.support.ImprovedMergeSort; =\X<UA}  
import org.rut.util.algorithm.support.ImprovedQuickSort; oH6(Lq'q  
import org.rut.util.algorithm.support.InsertSort; n6Q 3X  
import org.rut.util.algorithm.support.MergeSort; cY\-e?`=4  
import org.rut.util.algorithm.support.QuickSort; [`ttNW(_  
import org.rut.util.algorithm.support.SelectionSort; .vpQ3m>  
import org.rut.util.algorithm.support.ShellSort; Qg9{<0{u  
~Gwn||g78  
/** gvA&F |4  
* @author treeroot L>@0Nne7  
* @since 2006-2-2 Fdc bmQ  
* @version 1.0 1`aFL5[0$  
*/ 'ARQ7 Q[`  
public class SortUtil { Qt>yRt  
public final static int INSERT = 1; 8VMq>-  
public final static int BUBBLE = 2; .V/TVz!b  
public final static int SELECTION = 3; ^o?.Rph|i]  
public final static int SHELL = 4; 8{?Oi'-|0  
public final static int QUICK = 5; D*D83z OzN  
public final static int IMPROVED_QUICK = 6; Ih,~h[  
public final static int MERGE = 7; kP8Ypw&  
public final static int IMPROVED_MERGE = 8; Zls4@/\Q  
public final static int HEAP = 9; ?r'b Z~  
: ] Y=  
public static void sort(int[] data) { lZn <v'y  
sort(data, IMPROVED_QUICK); qY14LdC}~  
} -pqShDar|  
private static String[] name={ 'Iu$4xo`[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ypv"u0  
}; /-BplU*"9  
{_(;&\5  
private static Sort[] impl=new Sort[]{ MIt\[EB  
new InsertSort(), HCHC~FNd  
new BubbleSort(), 00b )Bg  
new SelectionSort(), :O//A6 v  
new ShellSort(), s/,St!A 4!  
new QuickSort(), /}M@ @W  
new ImprovedQuickSort(),  ZfvFs  
new MergeSort(), uE5kL{Fv  
new ImprovedMergeSort(), rxa8X wo8  
new HeapSort() _HGDqj L  
}; hrcR"OZ~X  
)QI]b4[  
public static String toString(int algorithm){ W&bh&KzCW  
return name[algorithm-1]; 2@e<II2ha8  
} Itz_;+I.Mp  
NaVZ)  
public static void sort(int[] data, int algorithm) { L}:u9$w  
impl[algorithm-1].sort(data); 6x[gg !;85  
} u :m]-'  
Q3oVl^q  
public static interface Sort { ?'h@!F%R'  
public void sort(int[] data); =gfLl1wY[  
} 38Wv&!  
2]> s@?[  
public static void swap(int[] data, int i, int j) { ~"=nt@M]  
int temp = data; 5%4:)s{4|  
data = data[j]; bcj7.rh]'h  
data[j] = temp; rvr Ok  
} ]MB ^0:F-  
} pazFVzT  
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