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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。 ohx$;j  
插入排序: e4Qjx*[G  
Yl'8" \HF  
package org.rut.util.algorithm.support; Dzu//_u  
Pf%I6bVN9  
import org.rut.util.algorithm.SortUtil; Zazs".  
/** ^ swj!da  
* @author treeroot Tq )hAZ  
* @since 2006-2-2 \}.bTca  
* @version 1.0 T{^mh(3/"  
*/ Qb)c>r  
public class InsertSort implements SortUtil.Sort{ S& IW]ffK  
\ILNx^$EL  
/* (non-Javadoc) xYv;l\20.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e_3jyA@v  
*/ <a=OiY  
public void sort(int[] data) { .xT{Rz  
int temp; P/[RH e  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `@1e{ ?$  
} T+B-R\@t  
} qyVARy  
} u1UCe  
1QD49)  
} 6XZjZ*)W  
HbB8A#u  
冒泡排序: ]u-bJ  
2p;I<C:Eo  
package org.rut.util.algorithm.support; H? z~V-8  
2BF455e   
import org.rut.util.algorithm.SortUtil; O>nMeU  
{j`8XWLZZN  
/** L;M@]  
* @author treeroot 2!W[ff@~7  
* @since 2006-2-2 :tnW ivrwR  
* @version 1.0 /8l@n dZf  
*/ <Rn-B).3bs  
public class BubbleSort implements SortUtil.Sort{ gXs9qY%=  
v,QvCozOz  
/* (non-Javadoc) l/nBin&YGv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tw zV-8\  
*/ Vi^vG`L9  
public void sort(int[] data) { -u"|{5? '  
int temp; i4k [#x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Btzes.  
if(data[j] SortUtil.swap(data,j,j-1); 8pr toCB  
} 0`WFuFi^o  
} $n!5JS@40  
} z>,tP  
} U" 3L  
JtMl/h  
} 1##@'L|u  
EyU6^  
选择排序: Vfk"}k/do  
5+oY c-  
package org.rut.util.algorithm.support; 8:S+*J[gSn  
{t! &x:  
import org.rut.util.algorithm.SortUtil; c*zeO@AAn  
4t%Lo2v!X%  
/** K2n#;fY %  
* @author treeroot DQ/rx`BG  
* @since 2006-2-2 u$5.GmKm  
* @version 1.0 9__Q-J  
*/ p8-$MF]] 6  
public class SelectionSort implements SortUtil.Sort { K$}K2w  
eE .wnn  
/* <=6F=u3PtU  
* (non-Javadoc) 1oiSmW\  
* I Ij:3HP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :XAyMK7   
*/ ,ZY\})`p  
public void sort(int[] data) { w<h8`K`3  
int temp; LfW:G5@-  
for (int i = 0; i < data.length; i++) { q&?hwX Z7  
int lowIndex = i; b~* iL!<  
for (int j = data.length - 1; j > i; j--) { $`\qY ^.(  
if (data[j] < data[lowIndex]) { ^["D>@yIR  
lowIndex = j; s.;'-oA  
} r|uR!=*|?  
} N>a~k}pPH  
SortUtil.swap(data,i,lowIndex); ^q& Rl\  
} N\.g+ W  
} "'Gq4<&y  
@Z#h?:  
} H$^9#{  
Uea2WJpX  
Shell排序: 8;<aco/62  
q\jq9)  
package org.rut.util.algorithm.support; 1GkoE  
' CJ_&HR  
import org.rut.util.algorithm.SortUtil; GoX<d{  
$'d,X@}8  
/** yk4py0xVl  
* @author treeroot ,+h<qBsV@  
* @since 2006-2-2 >jTiYJI_M  
* @version 1.0 rc>}3?o  
*/ FcZ)^RQ4G  
public class ShellSort implements SortUtil.Sort{ reYIF*  
lsj9^z7  
/* (non-Javadoc) !@ P{s'<:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FxK!h.C.  
*/ ?G!p4u?C  
public void sort(int[] data) { +T*? ?OW@  
for(int i=data.length/2;i>2;i/=2){ B+R|fQ  
for(int j=0;j insertSort(data,j,i); Z]2z*XD  
} N`H`\+  
} <Tbl |9  
insertSort(data,0,1); p^w)@^f  
} rbv  
L">jSZW[[  
/** jJvd!,=)  
* @param data ir\)Hz2P  
* @param j !U2<\!_  
* @param i * &#M`,#  
*/ Si23w'T  
private void insertSort(int[] data, int start, int inc) { T\4>4eX-  
int temp; _^RN$4.R>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O#J7GbrHO  
} v5?)J91  
} KkzG#'I1  
} !~7lY]_U  
&"A:_5AU  
} ,d.5K*?aI  
`{yI| Wf  
快速排序: Cl& )#  
OaoHN& "  
package org.rut.util.algorithm.support; *Ev8f11i&  
$JBb] v8_  
import org.rut.util.algorithm.SortUtil; b"td]H3h  
%Y#W#G  
/** As^eL/m2L  
* @author treeroot \YF;/KwX$  
* @since 2006-2-2  9[YnY~z)  
* @version 1.0 &io+*  
*/  '@.Lg0`  
public class QuickSort implements SortUtil.Sort{ Y![ i=/  
N 5{w  
/* (non-Javadoc) \>.[QQVI"l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Abmi=]\bx  
*/ )`W|J%w+  
public void sort(int[] data) { MX!N?k#KhP  
quickSort(data,0,data.length-1); [?,+DY  
} #\xy,C'Y  
private void quickSort(int[] data,int i,int j){ 4v5qK  
int pivotIndex=(i+j)/2; ,|zwY~l t5  
file://swap 4pcIH5)z  
SortUtil.swap(data,pivotIndex,j); #-"C_~-MH  
p R`nQM-D  
int k=partition(data,i-1,j,data[j]); |?f~T"|>  
SortUtil.swap(data,k,j); T(cpU,Q  
if((k-i)>1) quickSort(data,i,k-1); %7\l+g,  
if((j-k)>1) quickSort(data,k+1,j); v-!Spf  
<+%y  
} 5OFB[  
/** D^];6\=.i  
* @param data /a-s9<  
* @param i 3a U4Z|f~  
* @param j !T~uxeZ/;  
* @return &g*1If  
*/ @l_rB~  
private int partition(int[] data, int l, int r,int pivot) { Gcxz$.(  
do{ M#8_Qbvfk  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); JH2-'  
SortUtil.swap(data,l,r); ]D2 d=\  
} $|!3ks  
while(l SortUtil.swap(data,l,r); HG5E,^1n  
return l; Pum&\.l  
} Y~#.otBL&  
"18cD5-#  
} RR/?"d?&  
pOl6x iMx  
改进后的快速排序: *Kq;xM6Ck  
2`FDY3n  
package org.rut.util.algorithm.support; PCc{0Rp\vk  
D7B g!*  
import org.rut.util.algorithm.SortUtil; "1DlusmCCB  
r=RiuxxTq  
/** K}whqe]j  
* @author treeroot Rp_}_hL0  
* @since 2006-2-2 0Uk;&a0s  
* @version 1.0 l u{6  
*/ UhU+vy6)/  
public class ImprovedQuickSort implements SortUtil.Sort { -"2%+S{  
t|UM2h  
private static int MAX_STACK_SIZE=4096; c,G[Rk  
private static int THRESHOLD=10; VIod6Vk  
/* (non-Javadoc) oHV!>K_D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {p(6bsn_#]  
*/ NVf_#p"h  
public void sort(int[] data) { 5GJa+St?  
int[] stack=new int[MAX_STACK_SIZE]; \K Kt& bKL  
Ycxv=Et  
int top=-1; <fgf L9-  
int pivot; J/Ch /Sa  
int pivotIndex,l,r; |NFDrm  
>pq=5Ha&  
stack[++top]=0; 1wggYX  
stack[++top]=data.length-1; cy2K#  
mGw*6kOIS  
while(top>0){ cj#.Oaeq*  
int j=stack[top--]; o7v9xm+  
int i=stack[top--]; ;_=dB[M  
m^tf=O<  
pivotIndex=(i+j)/2; %~lTQCPE  
pivot=data[pivotIndex]; 2 jxh7\zE  
jnFN{(VH  
SortUtil.swap(data,pivotIndex,j); PvxU.  
mMK 93Ng"&  
file://partition VZk;{  
l=i-1; '|&?$g(\h  
r=j; r|953e  
do{ >T\^dHtz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2aUE<@RU[  
SortUtil.swap(data,l,r); dA(+02U/.  
} Vg"vC  
while(l SortUtil.swap(data,l,r); ,A0v 5Q<  
SortUtil.swap(data,l,j); j#H&~f  
S09Xe_q  
if((l-i)>THRESHOLD){ 3X`N~_+  
stack[++top]=i; ]9 9; 7  
stack[++top]=l-1; OuPfB  
} 5N2`e3:I  
if((j-l)>THRESHOLD){ 'H1k  
stack[++top]=l+1; `4qtmbj  
stack[++top]=j; ;T>.  
} `2G%&R,k"D  
.;:dG  
} J p0j  
file://new InsertSort().sort(data); T&E'MB  
insertSort(data); Z?."cuTt  
} +OO my  
/** v dU)  
* @param data o fCN[u  
*/ FaG&U  
private void insertSort(int[] data) { srS5-fs  
int temp; FeZGPxc~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gJOD+~  
} |q\Rvt$d  
} yV) 9KGV+:  
} 1#vi]CX  
!~}@Eoii4  
} [XNDYaF8  
t"&qaG{  
归并排序: zhI"++  
0T:U(5Y9  
package org.rut.util.algorithm.support; m{ rsjdnA  
#\3X;{  
import org.rut.util.algorithm.SortUtil; p$XvVzW#<  
0P4g6t}e  
/** d!4:nvKx  
* @author treeroot DC'L-]#<  
* @since 2006-2-2 M{XBmDfN  
* @version 1.0 lMjeq.5nP  
*/ -9q3]nmT(  
public class MergeSort implements SortUtil.Sort{ XK@Ct eP"  
,GF(pCZzG  
/* (non-Javadoc) fvV5G,lD3h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =$< .:b  
*/ }I~)o!N%7  
public void sort(int[] data) { Cuom_+wV&  
int[] temp=new int[data.length]; $69d9g8-(!  
mergeSort(data,temp,0,data.length-1); &f/"ir[8i  
} U1=\ `)u;  
 |u^~Z-.  
private void mergeSort(int[] data,int[] temp,int l,int r){ \8Yv}wQ  
int mid=(l+r)/2; #nS crs@  
if(l==r) return ; 9f3rMPVh(  
mergeSort(data,temp,l,mid); p{O@ts:  
mergeSort(data,temp,mid+1,r); %/%TR@/  
for(int i=l;i<=r;i++){ `_pVwa<@w  
temp=data; %Lfy!]Ru  
} 34aSRFsk*  
int i1=l; j =PM]  
int i2=mid+1; <*HsJwr)u  
for(int cur=l;cur<=r;cur++){ g_(O7  
if(i1==mid+1) w+{ o^ O  
data[cur]=temp[i2++]; ,+'VQa"]  
else if(i2>r) "bvob G  
data[cur]=temp[i1++]; kOv37c'  
else if(temp[i1] data[cur]=temp[i1++]; \|R\pS}4  
else k6|/ik9C  
data[cur]=temp[i2++]; 7,R ~2ss5z  
} cg}lF9;d  
} zw%1 a 3!  
>u?a#5R:m  
} b}m@2DR'|m  
L&Pj0K-HT3  
改进后的归并排序: )bB Va^  
V`"Cd?R0Z  
package org.rut.util.algorithm.support; d+IN-lR(  
$gaGaB  
import org.rut.util.algorithm.SortUtil; F Xp_`9.zH  
f.ws\^v%  
/** HurF4IsHk  
* @author treeroot nM H:7[x3  
* @since 2006-2-2 ;^so;>F  
* @version 1.0 8MBvp*  
*/ iY3TB|tMt  
public class ImprovedMergeSort implements SortUtil.Sort { S1_):JvV  
a}kPc}n\  
private static final int THRESHOLD = 10; B3&ETi5NTU  
S+-V16{i  
/* X->` ~-aj  
* (non-Javadoc) dwUs[v   
* A=BT2j'l)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q6%Pp_$k  
*/ 8:"s3xaO3  
public void sort(int[] data) { {:`XhPS<B  
int[] temp=new int[data.length]; k$ w#:Sx  
mergeSort(data,temp,0,data.length-1); 0Q:l,\lY  
} Gs(;&fw  
;1Q @d  
private void mergeSort(int[] data, int[] temp, int l, int r) { X "Q\MLy  
int i, j, k; FLaj|Z~#)  
int mid = (l + r) / 2; wRe2sjM  
if (l == r) Ca#T?HL  
return; &*o{-kw  
if ((mid - l) >= THRESHOLD) 8>!-|VSn  
mergeSort(data, temp, l, mid); Kq}-)  
else kFQx7m  
insertSort(data, l, mid - l + 1); E[>A# l53  
if ((r - mid) > THRESHOLD) x{,W<oXg  
mergeSort(data, temp, mid + 1, r); FtybF  
else -}"nb-RR\  
insertSort(data, mid + 1, r - mid); HXQ } B$V  
T)Pr%kF  
for (i = l; i <= mid; i++) { nF=[m; ~  
temp = data; 9]^NAlno  
} a- 7RJ.  
for (j = 1; j <= r - mid; j++) { $x(p:+TI\4  
temp[r - j + 1] = data[j + mid]; v)LSH;<  
} <ua! ]~  
int a = temp[l]; .}iRe}=  
int b = temp[r]; <l$ vnq  
for (i = l, j = r, k = l; k <= r; k++) { :hDv^D?3  
if (a < b) { )Xice=x9  
data[k] = temp[i++]; :Oi}X7\  
a = temp; a*!9RQ  
} else { 9Q&]5| x  
data[k] = temp[j--]; 6'jgjWEe3&  
b = temp[j]; 4+F@BxpB  
} t9&=; s  
} \}; 4rm}V  
} |pR'#M4j4A  
(%*~5%l\  
/** Ny]]L  
* @param data 3PaMq6Ca  
* @param l /7K7o8g  
* @param i *xDV8iu_  
*/ E^x/v_,$w!  
private void insertSort(int[] data, int start, int len) { d"}lh:L9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8D`TN8[W  
} <P-AlHYV-  
} a#+;BH 1  
} #[y2nK3zF  
} |5\: E}1  
*):s**BJ$  
堆排序: DN|+d{^lN  
1A N)%  
package org.rut.util.algorithm.support; @g1T??h   
kf_*=ER  
import org.rut.util.algorithm.SortUtil; 'F7UnkKO|  
E{[>j'dwc  
/** `i6q\-12n  
* @author treeroot 7E R!>l+  
* @since 2006-2-2 j.KV :zJU  
* @version 1.0 ^[1Xl7)`  
*/ \d QRQL{LL  
public class HeapSort implements SortUtil.Sort{ qmq#(%Z <W  
BXUd i&'O  
/* (non-Javadoc) "tmr s_~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?)e6:T(  
*/ 'o1lJ?~kH  
public void sort(int[] data) { z"V`8D  
MaxHeap h=new MaxHeap(); d@ tD0s  
h.init(data); 68nPz".X  
for(int i=0;i h.remove(); UX)QdT45Mh  
System.arraycopy(h.queue,1,data,0,data.length); 2o~UA\:+=  
} "2`/mt Mon  
L+0O=zJF  
private static class MaxHeap{ z#+Sf.  
9oVprd >%@  
void init(int[] data){ pB,l t6  
this.queue=new int[data.length+1]; +(oExp(!  
for(int i=0;i queue[++size]=data; &}VVr  
fixUp(size); ,UneS  
} q5>!.v   
} [`bA,)y"  
AnQUdU  
private int size=0; -9$.&D|  
\|$GBU  
private int[] queue; c1g'l.XL 3  
(_eM:H=e>  
public int get() { ^1X 6DH`  
return queue[1]; gA&`vnNP  
} D^A#C<Gs  
T,v5cc:nO  
public void remove() { TGI`}#  
SortUtil.swap(queue,1,size--); j15t8du&O  
fixDown(1); ;et(Yi;9  
} /mnV$+BE  
file://fixdown M3H^s_  
private void fixDown(int k) { v|2+7N:[;  
int j; gO kum_  
while ((j = k << 1) <= size) { 6jz~q~ I  
if (j < size %26amp;%26amp; queue[j] j++; &a";jO GB  
if (queue[k]>queue[j]) file://不用交换 `5Em: 8 M  
break; ]!cLFXa  
SortUtil.swap(queue,j,k); d>x(Bj6  
k = j; T@Th?  
} BU=Ta$#BZ  
} u$+nl~p[&  
private void fixUp(int k) { Q$~_'I7~Mz  
while (k > 1) { ?wMS[Kj  
int j = k >> 1; )7a 4yTg!~  
if (queue[j]>queue[k]) mlbSs_LT^  
break; "Fqrk>Q~  
SortUtil.swap(queue,j,k); G_ 6!w//  
k = j; #=I5_u  
} u7bji>j  
} nLnzl  
kl#) 0yqN0  
} oN Rp  
&p.7SPQ8/  
} )Z63 cr/  
T0K*!j}O  
SortUtil: p.!p6ve){  
ivPX_#QI  
package org.rut.util.algorithm; _6C,w`[[6  
4m6%HV8{}[  
import org.rut.util.algorithm.support.BubbleSort; ' y_2"  
import org.rut.util.algorithm.support.HeapSort; =v~$&@  
import org.rut.util.algorithm.support.ImprovedMergeSort; @<44wMp  
import org.rut.util.algorithm.support.ImprovedQuickSort; Z^GXKOeq  
import org.rut.util.algorithm.support.InsertSort; h($Jo  
import org.rut.util.algorithm.support.MergeSort; DO ,7vMO  
import org.rut.util.algorithm.support.QuickSort; tD No; f  
import org.rut.util.algorithm.support.SelectionSort; (0zYS_m A  
import org.rut.util.algorithm.support.ShellSort; l#|M.V6G  
&F|Wk,y  
/** qQCds}<w  
* @author treeroot tMr$N[@r  
* @since 2006-2-2 2G }@s.iE  
* @version 1.0 ?,FL"ye  
*/ }Z% j=c"d  
public class SortUtil { wW0m}L  
public final static int INSERT = 1; >TS=tK  
public final static int BUBBLE = 2; |=EwZ mj-c  
public final static int SELECTION = 3; !9EbG  
public final static int SHELL = 4; PpR eqmo  
public final static int QUICK = 5; );fPir?+  
public final static int IMPROVED_QUICK = 6; Hu$JCB-%  
public final static int MERGE = 7; wy?Hp*E  
public final static int IMPROVED_MERGE = 8; @gihIysf  
public final static int HEAP = 9; qim|=  
5S&^mj-9  
public static void sort(int[] data) { uN(N2m  
sort(data, IMPROVED_QUICK); k:CSH{s5{  
} *|)O  
private static String[] name={ 'd9cCQ}  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" d x"9jFn  
}; p&3~n: Fo  
"Kf4v|6;  
private static Sort[] impl=new Sort[]{ Q&?B^[N*Q  
new InsertSort(), GlaZZ,   
new BubbleSort(), #oEq)Vq>g|  
new SelectionSort(), (eO_]<wmky  
new ShellSort(), q4ej7T8  
new QuickSort(), @{x+ln1r  
new ImprovedQuickSort(), e[t1V/ah  
new MergeSort(), EtA,ow  
new ImprovedMergeSort(), u|\K kk  
new HeapSort() @1)C3(=A  
}; ^%Fn|U\u  
7dXh,sD  
public static String toString(int algorithm){ luV_  
return name[algorithm-1]; FSS~E [(DL  
} J*]JH{  
E1Rz<&L  
public static void sort(int[] data, int algorithm) { 73(5.'F  
impl[algorithm-1].sort(data); %)j^>W5  
} dhI+_z   
zK&J2P`  
public static interface Sort { q@iZo,Yk  
public void sort(int[] data); =lS@nRH  
} t: qPW<wc  
[300F=R  
public static void swap(int[] data, int i, int j) { 9XW[NY#)#  
int temp = data; fFd"21 >  
data = data[j]; a|@1RH>7H  
data[j] = temp; LrnE6 U9  
} D}EH9d  
} \t]aBT,  
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