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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。 @A%\;o o  
插入排序: y 0fI7:e3  
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package org.rut.util.algorithm.support; _#E@& z".L  
bXWodOSN  
import org.rut.util.algorithm.SortUtil; a&n}pnEn)  
/** &nn+X%m9g  
* @author treeroot S)@) @3  
* @since 2006-2-2 1 u~.^O}J  
* @version 1.0 n]_<6{: U  
*/ wcDb| H&  
public class InsertSort implements SortUtil.Sort{ +oa>k 0  
<;E>1*K}8  
/* (non-Javadoc) MOP#to)k&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oufdi3h  
*/ G8hDR^ra  
public void sort(int[] data) { /5 R?(-  
int temp; c~Z\|Y`#B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |0N1]Hf   
} G]>P!]  
} Jy#2 1  
} <K~mg<ff$  
YjeHNPf  
} PKNpR  
Si[xyG6=  
冒泡排序: uI&<H T?  
IlP@a[:_  
package org.rut.util.algorithm.support; 9Or  
l:"zYcp%  
import org.rut.util.algorithm.SortUtil; (qy82F-|2  
x4S0C[k  
/** TSYe ~)I  
* @author treeroot a)M#O\i`  
* @since 2006-2-2 rt!Uix&  
* @version 1.0 vqBT^Q_q;  
*/ bQ_N^[oxQ  
public class BubbleSort implements SortUtil.Sort{ kF"G {5  
PqwoZo0j  
/* (non-Javadoc) zlN<yZB^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9y&&6r<I  
*/ #-FfyxQ8ai  
public void sort(int[] data) { Eh?,-!SUQn  
int temp; C'//(gjQ-G  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Vbpt?1:  
if(data[j] SortUtil.swap(data,j,j-1); zF=E5TL-,4  
} Ru^j~Cj5  
} tv7A&Z)Rh  
} JlN<w  
} ' +[fJ>Le  
J@ pCF@'  
} 3%SwCYd  
>_um-w#C  
选择排序: g:>Mooxzi  
U6R~aRJ;  
package org.rut.util.algorithm.support; _,9/g^<  
6`hHx=L  
import org.rut.util.algorithm.SortUtil; o;Ma)/P  
9"mcN3x:\e  
/** #1` lJ  
* @author treeroot <gc\ ,P<ru  
* @since 2006-2-2 hiA%Tq?  
* @version 1.0 OBmmOswg~  
*/ +zLh<q0  
public class SelectionSort implements SortUtil.Sort { N|L Ey  
_^pg!j[Fy}  
/* h\qM5Qx+Q  
* (non-Javadoc) T*sB Wn'am  
* )\r;|DN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d|(@#*{T]  
*/ ")ZsY9-P  
public void sort(int[] data) { ~$3X>?Q  
int temp; V$XCe  
for (int i = 0; i < data.length; i++) { cu V}<3&  
int lowIndex = i; 8HymkL&F  
for (int j = data.length - 1; j > i; j--) { 5PU$D`7it  
if (data[j] < data[lowIndex]) { ^(8(z@y  
lowIndex = j; /iekww^54  
} $Sfx0?'  
} \%D/]"@r  
SortUtil.swap(data,i,lowIndex); Ss~dK-{e7  
} ?sBbe@OC?  
} `^7ARr/  
LlfD>cN  
} 4chSo.= 4V  
KD5}Nk)t  
Shell排序: }vLK-V v  
Vr=c06a2  
package org.rut.util.algorithm.support; `CXAE0Fx  
j4G?=oDb  
import org.rut.util.algorithm.SortUtil; SecZ5(+=  
- &/n[EE  
/** +W P  
* @author treeroot m!-,K8  
* @since 2006-2-2 D.\s mk  
* @version 1.0 : {Crc   
*/ fhZD#D  
public class ShellSort implements SortUtil.Sort{ ;0f?-W?1  
3Vj,O?(Z  
/* (non-Javadoc) On{p(| l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (X"WEp^Q{I  
*/ ,3`RM $  
public void sort(int[] data) { $zvqjT:>  
for(int i=data.length/2;i>2;i/=2){ <U ?_-0  
for(int j=0;j insertSort(data,j,i); ZiS<vWa3R  
} tzeS D C  
} aN5w  
insertSort(data,0,1); V:w=h>z8  
} Iv5 agh%  
mnM!^[|z  
/** C4jq T  
* @param data ,mE*k79L6  
* @param j P`K?k<  
* @param i AW+ q#Is  
*/ +EWfsKz  
private void insertSort(int[] data, int start, int inc) { D<2|&xaR  
int temp; .l->O-=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :>K=kZ=k  
} _lE0_X|d  
} $0MP*TFWa  
} dm&vLQVS  
7]~65@%R-&  
} .WR+)^&zz  
Z+< zKn}  
快速排序: k-b0Eogp]  
T*%Q s&x ;  
package org.rut.util.algorithm.support; A:3:Cr  
zl W 5$cC[  
import org.rut.util.algorithm.SortUtil; -nQ:RHnd  
~fE6g3  
/** Zw[A1!T,  
* @author treeroot ;{e;6Hq  
* @since 2006-2-2 t6u01r{~`  
* @version 1.0 }!-K)j.  
*/ C>vp oCA  
public class QuickSort implements SortUtil.Sort{ :Sx!jx>W  
)PU?`yLTr  
/* (non-Javadoc) av&4:O!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K 0i[D"  
*/ 4$=Dq$4z  
public void sort(int[] data) { wh\J)pA1  
quickSort(data,0,data.length-1); $~V,.RD  
} I3A@0'Vm;L  
private void quickSort(int[] data,int i,int j){ Rmrv@.dr!  
int pivotIndex=(i+j)/2; (\ze T5  
file://swap P-?ya!@"  
SortUtil.swap(data,pivotIndex,j); Ed%8| M3  
J0e~s  
int k=partition(data,i-1,j,data[j]); h] (BTb#-  
SortUtil.swap(data,k,j); qd9CKd  
if((k-i)>1) quickSort(data,i,k-1); lkWID  
if((j-k)>1) quickSort(data,k+1,j); Q-X<zn  
Sn\S `D  
} s.E}xv  
/** 4wZ{Z 2w  
* @param data CV~\xYY  
* @param i H h4G3h0  
* @param j F]hKi`@  
* @return l%?D%'afN  
*/ U`D.cEMfH  
private int partition(int[] data, int l, int r,int pivot) { TS9=A1J#  
do{ i9.~cnk  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ZX0ZN2 ]  
SortUtil.swap(data,l,r); 6]%79?'A  
} &J)q_Z8  
while(l SortUtil.swap(data,l,r); yB&+2  
return l; mr+J#  
} f((pRP   
\(PC#H%  
} @iZ"I i&+  
Cz2OGM*mz?  
改进后的快速排序: ?d*0-mhQ,  
GUJaeFe  
package org.rut.util.algorithm.support; 8:%=@p>$  
?qeBgkL(B^  
import org.rut.util.algorithm.SortUtil; =|lKB;  
NzmVQ-4  
/** km; M!}D  
* @author treeroot ?NZKu6  
* @since 2006-2-2 k\T,CZ<  
* @version 1.0 }*{@-v|_R  
*/ s6(iiB%d  
public class ImprovedQuickSort implements SortUtil.Sort { D{&0r.2F  
JfmNI~%  
private static int MAX_STACK_SIZE=4096; -uDB#?q:W  
private static int THRESHOLD=10; KLI(Rve24  
/* (non-Javadoc) '2u(fLq3h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !$"DD[~\  
*/ `.f {V  
public void sort(int[] data) { h*_h M1*;  
int[] stack=new int[MAX_STACK_SIZE]; "5]Fl8c?  
W|K"0ab  
int top=-1; :/N/u5.]  
int pivot; 1nv#Ehorg  
int pivotIndex,l,r; S4j`=<T,  
j +j2_\  
stack[++top]=0; <MhjvHg  
stack[++top]=data.length-1; !c`K zqP  
B5>1T[T'-  
while(top>0){ >^#OtFHuT)  
int j=stack[top--]; "T/ vE  
int i=stack[top--]; 289@O-  
N;XaK+_2F  
pivotIndex=(i+j)/2; Lw 7,[?,Z  
pivot=data[pivotIndex]; |sN>/89=/  
[E_eaez7#  
SortUtil.swap(data,pivotIndex,j); ~c>*3*  
-jc8ku3*  
file://partition 2\flTO2Ny  
l=i-1; ;\@co5.=  
r=j; g">E it*[  
do{ =Rl?. +uE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ""[(e0oA  
SortUtil.swap(data,l,r); 7 tOOruiC  
} <#U9ih 2  
while(l SortUtil.swap(data,l,r); sh []OSM  
SortUtil.swap(data,l,j); `C~RA, M  
~{,U%B  
if((l-i)>THRESHOLD){ |wASeZMO2  
stack[++top]=i; ;P9P2&c8c  
stack[++top]=l-1; h)[{{JSf  
} 9o<}*L   
if((j-l)>THRESHOLD){ sd;J(<Ofh  
stack[++top]=l+1; cqzd9L6=  
stack[++top]=j; `6KTQk'  
} OI3UC=G  
L&wJ-}'l  
} 0f.rjd  
file://new InsertSort().sort(data); d\Xi1&&  
insertSort(data); Y$0Y_fm%  
} yUb$EMo \  
/** cPh U q ET  
* @param data H6ff b)&  
*/ )D ^.{70N  
private void insertSort(int[] data) { XeD9RMT  
int temp; ;[*jLi,uc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @1#QbNp#  
} /"A)}>a  
} S/}6AX#F4  
} 8}m bfu o1  
:3k&[W*  
} nJJ9>#<g$  
Nf0'>`/  
归并排序: (VYY-%N`  
0MK|spc  
package org.rut.util.algorithm.support; G1 ?."  
+8e~jf3E1  
import org.rut.util.algorithm.SortUtil; h+e Oe}  
si.A"\bm  
/** |oq27*ix~m  
* @author treeroot 4q"x|}a  
* @since 2006-2-2 ^h+,Kn0@  
* @version 1.0 }`g:) g J  
*/ ?{s!.U[T@  
public class MergeSort implements SortUtil.Sort{ 7 jq?zS|  
5Xn+cw*  
/* (non-Javadoc) }."3&u't  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fsU6o4  
*/ $x,?+N  
public void sort(int[] data) { i>!7/o  
int[] temp=new int[data.length]; acuch  
mergeSort(data,temp,0,data.length-1); (pBOv:6  
} i"=6n>\  
y5_`<lFv  
private void mergeSort(int[] data,int[] temp,int l,int r){ x`@!hJc:[e  
int mid=(l+r)/2; cE}R7,y  
if(l==r) return ; z?$F2+f&  
mergeSort(data,temp,l,mid); {HKd="%VG  
mergeSort(data,temp,mid+1,r); ncg5%(2  
for(int i=l;i<=r;i++){ (Dr g  
temp=data; IUco 8  
} l4+!H\2  
int i1=l; NET?Ep  
int i2=mid+1; Mq-QWx"P  
for(int cur=l;cur<=r;cur++){ ZhqrN]x  
if(i1==mid+1) rzJNHf=FVY  
data[cur]=temp[i2++]; QUL^]6$  
else if(i2>r) @OOnO+g  
data[cur]=temp[i1++]; 7n*,L5%?]4  
else if(temp[i1] data[cur]=temp[i1++]; =[8EQdR  
else `Tt}:9/3  
data[cur]=temp[i2++]; VeO$n*O  
} iOpMU  
} ?bc-?<Xk  
)X{x\ /N  
} Fy|tKMhnc  
T9r"vw  
改进后的归并排序: -"qw5Y_oF?  
7;dTQ.%n  
package org.rut.util.algorithm.support; Fj\}&H*+  
%,$Ms?,n`  
import org.rut.util.algorithm.SortUtil; t3ua5xw  
|;2Y|>=  
/** $mvcqn;  
* @author treeroot -<kl d+  
* @since 2006-2-2 2Y_ `&  
* @version 1.0 VuqN)CE^Uq  
*/ OU;R;=/]  
public class ImprovedMergeSort implements SortUtil.Sort { >$,A [|R  
&V7@ TZ  
private static final int THRESHOLD = 10; .'o<.\R8  
&V5[Zj|]  
/* x\t)uM%  
* (non-Javadoc) r\7F}ZW/  
* T"1H%65`V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <ijf':X=*  
*/ 8Xpf|? .  
public void sort(int[] data) { K8NoY6  
int[] temp=new int[data.length]; u"IYAyzL  
mergeSort(data,temp,0,data.length-1); 7Iu^ l4=2  
} hS]g^S==2h  
~ZeF5  
private void mergeSort(int[] data, int[] temp, int l, int r) { (9:MIP  
int i, j, k; ' uvTOgP,  
int mid = (l + r) / 2; Rd6? ,  
if (l == r) 3R(GO.n=]  
return; 8hWB TUN  
if ((mid - l) >= THRESHOLD) D Q7+  
mergeSort(data, temp, l, mid); USz |Rh  
else G t 4| ]  
insertSort(data, l, mid - l + 1); {~.~ b+v  
if ((r - mid) > THRESHOLD) "&jA CI  
mergeSort(data, temp, mid + 1, r); j-wSsjLk  
else *yJCnoF  
insertSort(data, mid + 1, r - mid); oTOr,Mn0\6  
?>b>LDpx?  
for (i = l; i <= mid; i++) {  L><# I  
temp = data; WP,Ll\K)7  
} {awv= s  
for (j = 1; j <= r - mid; j++) { .`Ey'T_  
temp[r - j + 1] = data[j + mid]; ?sQOz[ig;  
} ;,T3C:S?  
int a = temp[l]; %H=d_Nm{  
int b = temp[r]; C?@vBM}  
for (i = l, j = r, k = l; k <= r; k++) { n_;qB7,,  
if (a < b) { N3?hyR<T  
data[k] = temp[i++]; _t<&#D~  
a = temp; +2%ih !  
} else { lSv?!2  
data[k] = temp[j--]; P" +!mSe^~  
b = temp[j]; 61|uvTX  
} Kx.'^y  
} ]h4^3   
} 5WN^8`{'3  
yZup4#>8  
/** ZH8O%>!  
* @param data V<~.:G$3H  
* @param l <<#-IsT  
* @param i _'9("m V  
*/ [fF0Qa-  
private void insertSort(int[] data, int start, int len) { =O= 0 D  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :s8^nEK  
} K)z{R n  
} 6"@+Jz  
} 0* Ox>O>  
} .!uXhF'  
*_G(*yAe(  
堆排序: O;RsYs9  
+X[+SF)!  
package org.rut.util.algorithm.support; hdky:2^3  
nulCk33x'=  
import org.rut.util.algorithm.SortUtil; t)|*-=  
wQR>S>p  
/** l ;"v&?  
* @author treeroot !u@XEN>/  
* @since 2006-2-2 KU,K E tf  
* @version 1.0 v{%x,K56  
*/ I9S=VFhZ`  
public class HeapSort implements SortUtil.Sort{ \Eq,4-q  
^0A}iJL  
/* (non-Javadoc) 9Q{-4yF9k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yV=Ku  
*/ p=F!)TnJN  
public void sort(int[] data) { BJGL &N  
MaxHeap h=new MaxHeap(); 5,/rh,?  
h.init(data); 3m RP.<=  
for(int i=0;i h.remove(); Dep.Qfv{-  
System.arraycopy(h.queue,1,data,0,data.length); tHF -OarUO  
} ~>C@n'\lv  
hY$gzls4  
private static class MaxHeap{ L?~>eT  
12 y=Eh  
void init(int[] data){ Dq=&K,5;  
this.queue=new int[data.length+1]; Y ,1ZvUOB  
for(int i=0;i queue[++size]=data; Y+il>.Z  
fixUp(size); Cjh0 .{  
} a!UQ]prT  
} )8`7i{F  
 y|r+<  
private int size=0; q18IqY*Lo  
W?y7mw_S  
private int[] queue; wOW#A}m'vj  
`SDpOqfIrP  
public int get() { Ze `=n  
return queue[1]; bf1Tky=/  
} ODvlix  
U^qQ((ek  
public void remove() { p mv6m  
SortUtil.swap(queue,1,size--); 0,1x- yD  
fixDown(1); W5C8$Bqm  
} {wUbr^  
file://fixdown !O;su~7  
private void fixDown(int k) { Q;9-aZ.H  
int j; C\%T|ZDE  
while ((j = k << 1) <= size) { #G</RYM~m  
if (j < size %26amp;%26amp; queue[j] j++; xBba&A]=  
if (queue[k]>queue[j]) file://不用交换 [k1N-';;;  
break; @VdkmqXz  
SortUtil.swap(queue,j,k); m9yi:zT%  
k = j; ?'RB)M=Og7  
} E?\&OeAkO  
} n7Em t$Hi>  
private void fixUp(int k) { GnAG'.t-Z  
while (k > 1) { D~~"wos  
int j = k >> 1; I,[njlO:  
if (queue[j]>queue[k]) Jo%`N#jG   
break; g.L~Z1-  
SortUtil.swap(queue,j,k); N, `q1B  
k = j; @zu IR0Gr)  
} TcW-pY<N  
} 91I6-7# Xt  
Vq8G( <77  
} pe}mA}9U  
YUGE>"{  
} fU/&e^, 's  
U}#3 LFr.?  
SortUtil: b/#SkxW#S  
/-J  
package org.rut.util.algorithm; 4OX2GH=W  
hc"l^a!7ic  
import org.rut.util.algorithm.support.BubbleSort; AN193o   
import org.rut.util.algorithm.support.HeapSort; kSW=DE|#}  
import org.rut.util.algorithm.support.ImprovedMergeSort; L{pz)')I  
import org.rut.util.algorithm.support.ImprovedQuickSort; x*`S>_j27=  
import org.rut.util.algorithm.support.InsertSort; }~I(e  
import org.rut.util.algorithm.support.MergeSort; |uUGvIsXn  
import org.rut.util.algorithm.support.QuickSort; #%Hk-a=>)#  
import org.rut.util.algorithm.support.SelectionSort; =g.R?H8cj5  
import org.rut.util.algorithm.support.ShellSort; o7gYj\  
w\V1pu^6@  
/** h#hx(5"6  
* @author treeroot T]er_n  
* @since 2006-2-2 /Pbytu);ds  
* @version 1.0 tLH:'"{zx  
*/ @euH[<  
public class SortUtil { %fbV\@jDCX  
public final static int INSERT = 1; <K g=?wb  
public final static int BUBBLE = 2; <v=$A]K  
public final static int SELECTION = 3; vl`Qz"Xy  
public final static int SHELL = 4; 9f(0 qa  
public final static int QUICK = 5; ;C ^!T  
public final static int IMPROVED_QUICK = 6; .j et0w  
public final static int MERGE = 7; $ol]G`+  
public final static int IMPROVED_MERGE = 8; _+sb~  
public final static int HEAP = 9; %wFz4 :  
/"+CH\) E  
public static void sort(int[] data) { 8ln{!,j;  
sort(data, IMPROVED_QUICK); UC e{V]T  
} QJ i5 H  
private static String[] name={ (6}[y\a+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" enC/@){~  
}; -1_WE/Ps  
hqXp>.W  
private static Sort[] impl=new Sort[]{ g 2LY~  
new InsertSort(), 2Kkm-#p7  
new BubbleSort(), -gQtw% `x  
new SelectionSort(), T }}T`Ce  
new ShellSort(), kk`K)PESi  
new QuickSort(), pD@:]VP  
new ImprovedQuickSort(), | 2Vhj<6  
new MergeSort(), ]KQv ]'  
new ImprovedMergeSort(), 9T\uOaC"  
new HeapSort() @$Xl*WT7  
}; VGY x(  
k~0#Iy_{M  
public static String toString(int algorithm){ r*q  
return name[algorithm-1]; cv{icz,%w  
} R7o'V* d  
/3`yaYkSh  
public static void sort(int[] data, int algorithm) { +Rj8 "p$K  
impl[algorithm-1].sort(data); ; Sd== *  
} @~z4GTF9i  
+P &S0/  
public static interface Sort { c$.Zg=  
public void sort(int[] data); N&uRL_X .  
} 3 <A?  
`K7UWtp  
public static void swap(int[] data, int i, int j) { uIy$| N  
int temp = data; ~GLWhe-  
data = data[j]; LULRi#n  
data[j] = temp; }ed{8"bj  
} .9u0WP95  
} 2M+}o"g  
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