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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。 z/YMl3$l~  
插入排序: nF'xV44"  
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package org.rut.util.algorithm.support; Y(y 9l{'  
^-IsK#r.k  
import org.rut.util.algorithm.SortUtil; q~J oGTv  
/** >'6GcnEb4.  
* @author treeroot z/KZ[qH\  
* @since 2006-2-2 j#e.rNG  
* @version 1.0 #eC;3Kq#-  
*/ ;:c%l.Y2  
public class InsertSort implements SortUtil.Sort{ Ys$YI{  
zcB 2[eaV  
/* (non-Javadoc) H\I!J@6g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b|dCEmFt  
*/ Tj=dL  
public void sort(int[] data) { 5!ubY 6Ph  
int temp; EB>B,#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *9vA+uN  
} atf%7}2  
} f9,EWuQNS  
} JblmXqtC  
V+qJrZ ,i  
} ~g1, !Wl  
FxfL+}?Q  
冒泡排序: 5}eQaW48  
Yu^H*b  
package org.rut.util.algorithm.support; u:k:C  
=x^l[>sz  
import org.rut.util.algorithm.SortUtil; 7B(bH8  
XY{:tR_al  
/** XocsSs  
* @author treeroot &|N%#pYS  
* @since 2006-2-2 @ EmGexLPM  
* @version 1.0 n}A?jOSAe  
*/ >{m2E8U0  
public class BubbleSort implements SortUtil.Sort{ (a `FS,M  
MCeu0e^)  
/* (non-Javadoc) #9`rXEz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2L2 VVO  
*/ sS2_-X[_  
public void sort(int[] data) { -\kXH"%  
int temp; JoCA{Fa}  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4;C*Fa  
if(data[j] SortUtil.swap(data,j,j-1); _1sMYhI  
} wmo{YS3t|  
} >?5xDbRj  
} b]*X<,p  
} ]U,CKJF%/  
gg-};0P-  
} ?MC(}dF0  
Xsd $*F@<  
选择排序: \+k, :8s/  
r<*O  
package org.rut.util.algorithm.support; l"J*)P  
6F`qi:a+  
import org.rut.util.algorithm.SortUtil; #JA}LA"l  
pe()f/Jx(  
/** 2{ o0@  
* @author treeroot (kIz  
* @since 2006-2-2 pI7Ssvi^  
* @version 1.0 Di*]ab  
*/ u#`+[AC`  
public class SelectionSort implements SortUtil.Sort { ljPq2v ]  
6&89~W{  
/* _>Pk8~m  
* (non-Javadoc) iJdP>x  
* H9RGU~q4s[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jfUJ37zNZr  
*/ 5W+{U8\  
public void sort(int[] data) { +UxI{,L  
int temp; z%V*K  
for (int i = 0; i < data.length; i++) { DVI7]+=nV  
int lowIndex = i; ITyzs4"VV  
for (int j = data.length - 1; j > i; j--) { XHsd-  
if (data[j] < data[lowIndex]) { ?6i;)eIOI  
lowIndex = j; {6'*Phw  
} .APVjqG  
} }A|))Ao|  
SortUtil.swap(data,i,lowIndex); (w+%=z"M  
} I:#Ok+   
} :pwa{P  
3bH~';<  
}  tPA:_  
'61i2\[lZQ  
Shell排序: 91u p^   
x;u~NKy  
package org.rut.util.algorithm.support; &Yp+k}XU  
Xo Y7/&&  
import org.rut.util.algorithm.SortUtil; @,k7xm$u  
s~^*+kq  
/** td >,TW=A*  
* @author treeroot .Gh%p`<  
* @since 2006-2-2 lop uf/U0  
* @version 1.0 xf/m!b"p  
*/ Fn!SGX~kx$  
public class ShellSort implements SortUtil.Sort{ ibJl;sJ  
%e{(twp  
/* (non-Javadoc) f =o4I2Y[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <Nex8fiJ9  
*/ pI>*u ]x  
public void sort(int[] data) { R:A'&;S  
for(int i=data.length/2;i>2;i/=2){ I!0JG`&  
for(int j=0;j insertSort(data,j,i); HA!t$[_Ve  
} b3\B8:XFo|  
} xP{-19s1]  
insertSort(data,0,1); !h CS#'  
} ^agj4$  
H`-=?t  
/** MiJ6n[iv  
* @param data qD-fw-,:  
* @param j [ ?iqqG.  
* @param i QH~Jy*\+PX  
*/ G>%AZr{M  
private void insertSort(int[] data, int start, int inc) { ?*H9-2W@  
int temp; 3B{[%#vO  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?,07;>&  
} ]#zZWg zv  
} ;i\C]*  
} F$Q04Qw  
RN[]Jt#6  
} 4T`&Sl  
}c% pH{ HI  
快速排序: KiAcA]0  
*Y%Jl o  
package org.rut.util.algorithm.support; n'K6vW3  
FLZSK:3B]  
import org.rut.util.algorithm.SortUtil; =&7@<vBpy  
=i>\2J%'R  
/** _s+c+]bO  
* @author treeroot ;cKH1  
* @since 2006-2-2 @2 =z}S3O  
* @version 1.0 \9)#l#m  
*/ }>}1oUCi  
public class QuickSort implements SortUtil.Sort{ CISO<z0  
*N F$1  
/* (non-Javadoc) 3qi_]*dD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XP-C  
*/ q8xd*--#  
public void sort(int[] data) { hj!+HHYSk  
quickSort(data,0,data.length-1); c@R; /m:R  
} \a))  
private void quickSort(int[] data,int i,int j){ uZIJoT  
int pivotIndex=(i+j)/2; 8>NwCjN  
file://swap !msNEE@[  
SortUtil.swap(data,pivotIndex,j); M2@;RZ(|  
?n]FNjd  
int k=partition(data,i-1,j,data[j]); |~K(F <;j  
SortUtil.swap(data,k,j); MBw-*K'?zB  
if((k-i)>1) quickSort(data,i,k-1); CPv iR<ms_  
if((j-k)>1) quickSort(data,k+1,j); /L v1$~  
-M4p\6)Ge  
} ``|AgIg  
/** 6/tI8H3E  
* @param data SfB8!V|;  
* @param i >xg5z  
* @param j uzBz}<M=  
* @return ?j{C*|yHO  
*/ NfzF.{nh  
private int partition(int[] data, int l, int r,int pivot) { =o^|bih  
do{ v`DI<Lt  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); sx 9uV  
SortUtil.swap(data,l,r); A:# k  
} DBsDk kB{  
while(l SortUtil.swap(data,l,r); M#,Q ^rH#  
return l; j6g@tx^)'  
} Rc[0aj:  
zY=jXa)K~  
} A\QJLWBv^$  
7:Zt uc]  
改进后的快速排序: '6-$Xq0^E  
o 3N]`xD'  
package org.rut.util.algorithm.support; \we\0@v  
6f)2F< 7  
import org.rut.util.algorithm.SortUtil;  HpW 42  
SVWIEH0?  
/** #sB,1"  
* @author treeroot 9&Ne+MY^%  
* @since 2006-2-2 7J*N_8?2  
* @version 1.0 ?+2b(2&MXE  
*/ PmX2[7  
public class ImprovedQuickSort implements SortUtil.Sort { '#\1uXM1U?  
E167=BD9<  
private static int MAX_STACK_SIZE=4096; A??@AP[7M  
private static int THRESHOLD=10; 3 hKBc0  
/* (non-Javadoc) }< 5F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C~4PE>YtTv  
*/ +wO#'D  
public void sort(int[] data) { pz|'l:v^  
int[] stack=new int[MAX_STACK_SIZE]; E JK0  
TNwK da+  
int top=-1; p(JlvJjo  
int pivot; c EnkU]  
int pivotIndex,l,r; <a^Oj LLU  
BR5BJX  
stack[++top]=0; LT@OWH  
stack[++top]=data.length-1; x/fX`y|(}*  
F<&!b2)ML  
while(top>0){ {+.r5py  
int j=stack[top--]; |L6&Gf]#5  
int i=stack[top--]; %O[N}_XHEh  
JXqr3 Np1  
pivotIndex=(i+j)/2; ?> D tw#}  
pivot=data[pivotIndex]; GqKsK r2%  
zaimGMJ ,  
SortUtil.swap(data,pivotIndex,j); B 0ee?VC  
Wp0 Dq(  
file://partition }8K4-[\  
l=i-1; YT#3n  
r=j; ]lOh&Cz[  
do{ /+]s.V.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *OjKc s  
SortUtil.swap(data,l,r); s)J(/  
} Orn0Zpp<z  
while(l SortUtil.swap(data,l,r); Cby;?F6w  
SortUtil.swap(data,l,j); B%s7bS  
s1N?/>lmB  
if((l-i)>THRESHOLD){ t= #&fSR  
stack[++top]=i; =EP13J  
stack[++top]=l-1; 9xI GV!  
} zYER  
if((j-l)>THRESHOLD){ lSwcL  
stack[++top]=l+1; ,:Z^$  
stack[++top]=j; &53]sFZ  
} 3VO2,PCZ  
G6 0S|d  
} 0% L l  
file://new InsertSort().sort(data); fxcc<h4  
insertSort(data); yay<GP?  
} YZf6|  
/** o{qr!*_3  
* @param data [Nm4sI11  
*/ n/d`qS  
private void insertSort(int[] data) { SLL3v,P(7  
int temp; s ^Nw%KAv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); - YqYcer  
} {Azn&|%.t  
} 9pn>-1NJ  
} BaI $S>/Q  
WsU)Y&  
} 4R^mI  
 uF|3/x=  
归并排序: n.MRz WJpZ  
gmKGy@]  
package org.rut.util.algorithm.support; =W bOwI)u  
Bq\F?zk<  
import org.rut.util.algorithm.SortUtil; p9!"O  
Jzji&A~  
/** f"[J "j8  
* @author treeroot *D}0 [|O  
* @since 2006-2-2 f5*k7fg  
* @version 1.0 4S"\~><  
*/ \W5O&G-C  
public class MergeSort implements SortUtil.Sort{ !^#jwRpeN  
C@ZK~Y_g  
/* (non-Javadoc) 96cJ8I8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {6;9b-a]  
*/ `_I@i]i^  
public void sort(int[] data) { 8H,4kY?Z  
int[] temp=new int[data.length]; ]B"'}%>ez  
mergeSort(data,temp,0,data.length-1); jdZ~z#`(!:  
} H(c72]@Vg  
lf{e[!ML'  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~)LH='|h\}  
int mid=(l+r)/2; k %e^kej  
if(l==r) return ; {R<Ea @LV+  
mergeSort(data,temp,l,mid); >zsid:  
mergeSort(data,temp,mid+1,r); i$G;f^Z!Y  
for(int i=l;i<=r;i++){ ( 9!k#  
temp=data; H`bSYjgM!  
} K%<j=c  
int i1=l; :NHH Dl  
int i2=mid+1; xJ^>pg8  
for(int cur=l;cur<=r;cur++){ G@FI0\t  
if(i1==mid+1) [v7^i_d  
data[cur]=temp[i2++]; $E<Esf$  
else if(i2>r) fqX"Lus `=  
data[cur]=temp[i1++]; ZRxZume<f  
else if(temp[i1] data[cur]=temp[i1++]; 00I}o%akO  
else Ars687WB  
data[cur]=temp[i2++]; s4Sd>D 7  
} ^'CPM6J  
} Xp\/YJOibd  
OMhef,,H  
} h^,8rd  
4%4avEa"w  
改进后的归并排序: E#J';tUQ  
Wt)Drv{@ {  
package org.rut.util.algorithm.support; 'w>_+jLT  
#/"8F O%~p  
import org.rut.util.algorithm.SortUtil; WV3|?,y]qm  
W>r#RXmh  
/** ?]fF3SJk  
* @author treeroot hT$~ygQ  
* @since 2006-2-2 qPB8O1fyU  
* @version 1.0 tO7v4  
*/ IEKU-k7}Z  
public class ImprovedMergeSort implements SortUtil.Sort { !TZhQiorC  
C{sLz9  
private static final int THRESHOLD = 10;  S( S#  
/MY9 >  
/* 7^wc)E^H  
* (non-Javadoc) ~!s-o|N_\  
* $vHU$lZ/W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u p.Q>28r  
*/ /V3=KY`_J  
public void sort(int[] data) { F:*W5xX  
int[] temp=new int[data.length]; sK{l 9  
mergeSort(data,temp,0,data.length-1); +iRq8aS_  
} .Ha'p.  
<VD8bTk  
private void mergeSort(int[] data, int[] temp, int l, int r) { ;^*Unyt[4]  
int i, j, k; 4h@Z/G!T3  
int mid = (l + r) / 2; /9o!*K  
if (l == r) o7mZzzP  
return; X;<BzA!H  
if ((mid - l) >= THRESHOLD) ,Y 3W?  
mergeSort(data, temp, l, mid); +!QJTn"3  
else ?)bS['^1)  
insertSort(data, l, mid - l + 1); |mdi]TL  
if ((r - mid) > THRESHOLD) `_b`kzJ  
mergeSort(data, temp, mid + 1, r); hN['7:bQ  
else 0sI1GhVR  
insertSort(data, mid + 1, r - mid); QO"oEgB`+Z  
qB)"qFa  
for (i = l; i <= mid; i++) { DI!V^M[~u  
temp = data; Gpm{m:$L  
} qo<&J f  
for (j = 1; j <= r - mid; j++) { *x)Ozfe  
temp[r - j + 1] = data[j + mid]; UzXE_ S  
} pO8ePc@=D  
int a = temp[l]; >iS`pb  
int b = temp[r]; Yvn\x ph3  
for (i = l, j = r, k = l; k <= r; k++) { +C1QY'>I  
if (a < b) { {]"]uT#  
data[k] = temp[i++]; Pnd `=%w%]  
a = temp; ;<UWA.  
} else { `ptj?6N-  
data[k] = temp[j--]; n@ w^ V   
b = temp[j]; dt~YW  
} ZeG_en ;  
} ]skkoM  
} ?"z]A7<Hj  
mxb06u _  
/** n}s~+USZX  
* @param data 3Tn)Z1o  
* @param l 5 H#W[^s"  
* @param i \rVQQ|l   
*/ 7' S@3   
private void insertSort(int[] data, int start, int len) { =)hVn  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); p7:{^  
} AfG/JWSo}  
} qc#)!   
} Oy 2+b1{  
} j5 g# M  
+ >cBVx6  
堆排序: bzdb|I6Z  
0i8LWX_M  
package org.rut.util.algorithm.support; ^ wY[3"{  
<>m }}^  
import org.rut.util.algorithm.SortUtil; !QDQ_  
# O4gg  
/** #2`D`>7456  
* @author treeroot 1SrJ6W @j[  
* @since 2006-2-2 4%1D}9hO6  
* @version 1.0 rQ=,y>-*  
*/ U^qt6$bK  
public class HeapSort implements SortUtil.Sort{ S1/`th  
w[6J `   
/* (non-Javadoc) : Sq?a0!S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'R&uD~Q  
*/ U%h);!<  
public void sort(int[] data) { Mwgu93?  
MaxHeap h=new MaxHeap(); kD bhu^~B  
h.init(data); hDV20&hq  
for(int i=0;i h.remove(); :>itXD!  
System.arraycopy(h.queue,1,data,0,data.length); *6 _tQ9G  
} "*,XL uv>  
QXF aAb=(7  
private static class MaxHeap{ 5=e@d:Sz  
K-&V,MI  
void init(int[] data){ ZNYH#mJX*  
this.queue=new int[data.length+1]; p$ bnK]  
for(int i=0;i queue[++size]=data; [frq  'c  
fixUp(size); ",{ibh)g$`  
} o[E_Ge}g8  
} <(vCiH9~P  
KFa_  
private int size=0; 1xv8gC:6  
`GXkF:f=  
private int[] queue; ?YeWH WM  
IF]lHB  
public int get() { ={hX}"*D  
return queue[1]; JoSJH35=:  
} OLI$1d_  
eHDef  
public void remove() { ^Q&u0;OJ  
SortUtil.swap(queue,1,size--); QJ|ap4r  
fixDown(1); e)E$}4  
} w,Ee>cV]a  
file://fixdown v:+ ~9w+  
private void fixDown(int k) { !45.puL0  
int j; 7 bDHXn  
while ((j = k << 1) <= size) { wu"&|dt  
if (j < size %26amp;%26amp; queue[j] j++; xV%6k{_:G  
if (queue[k]>queue[j]) file://不用交换 c*UvYzDZL  
break; qH['09/F6  
SortUtil.swap(queue,j,k); `Y?87f:SP  
k = j; c^`]`xiX  
} /*|oL# hK  
} y*MF&mQ[  
private void fixUp(int k) { ]jpu,jz:  
while (k > 1) { b~-%c_  
int j = k >> 1; <9> vO,n  
if (queue[j]>queue[k]) ]:34kE}e5  
break; kp\\"+,VC  
SortUtil.swap(queue,j,k); t\$U`V)  
k = j; R-^96fFBy  
} r\;ut4wy  
} YIR R=qpn  
sl*5Y#,|1  
} I5h[%T  
[%&ZPJT%i  
} % >;#9"O4  
XR!us/U`a  
SortUtil: n<B<93f/  
/pp1~r.s?>  
package org.rut.util.algorithm; .G o{1[  
F7")]q3I~  
import org.rut.util.algorithm.support.BubbleSort; ; O<9|?  
import org.rut.util.algorithm.support.HeapSort; pStk/te,XK  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]\ngX;h8G  
import org.rut.util.algorithm.support.ImprovedQuickSort; (LHp%LaZ\;  
import org.rut.util.algorithm.support.InsertSort; P9T5L<5  
import org.rut.util.algorithm.support.MergeSort; .Yw'oYnS  
import org.rut.util.algorithm.support.QuickSort; F]O$(7*  
import org.rut.util.algorithm.support.SelectionSort; Su 5>$  
import org.rut.util.algorithm.support.ShellSort; Pl-5ncb\  
fh^lO ^  
/** @xc',I  
* @author treeroot Lr`1TH,  
* @since 2006-2-2 DQwGUF'(  
* @version 1.0 y$<Vha  
*/ ttXjn  
public class SortUtil { L,; D@Xi  
public final static int INSERT = 1; <W]g2>9o9  
public final static int BUBBLE = 2; ]; %0qb  
public final static int SELECTION = 3; KsrjdJx, '  
public final static int SHELL = 4; ^*~;k|;&  
public final static int QUICK = 5; n4lutnF  
public final static int IMPROVED_QUICK = 6; |j3'eW&=  
public final static int MERGE = 7; 0j(M* sl  
public final static int IMPROVED_MERGE = 8; <5=JE*s$NS  
public final static int HEAP = 9; <)*2LBF@]  
*-s,. F+c  
public static void sort(int[] data) { OiDhJ  
sort(data, IMPROVED_QUICK); 8>/Q1(q0  
} #P#-xz  
private static String[] name={ b|z g<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z!0]/mCE8  
}; lcV<MDS  
ET];%~ ^  
private static Sort[] impl=new Sort[]{ 8}w6z7e|{  
new InsertSort(), w:' dhr':  
new BubbleSort(), Ap{}^  
new SelectionSort(), G|8%qd  
new ShellSort(), .WQ<jZt>  
new QuickSort(), ,<DB&&EV8  
new ImprovedQuickSort(), (z$r:p  
new MergeSort(), ~ d^<_R  
new ImprovedMergeSort(), ;6 +}z~  
new HeapSort() .Wi{lt  
}; 20rkKFk*  
{G*A.$-d  
public static String toString(int algorithm){ ceGa([#!\_  
return name[algorithm-1]; e4FM} z[  
} 1y^K/.5-  
)6~1 ^tD  
public static void sort(int[] data, int algorithm) { d3^OEwe  
impl[algorithm-1].sort(data); rw)kAe31  
} 0ult7s}  
/J)l/oI  
public static interface Sort { Jw~( G9G  
public void sort(int[] data); rwIe qV{:  
} i* R,QN)  
80M;4nH^5  
public static void swap(int[] data, int i, int j) { sS TPMh  
int temp = data;  htY=w}>  
data = data[j]; C6_@\&OA  
data[j] = temp; _if|TFw;h  
} LflFe@2  
} juBw5U<  
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