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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。 jr=9.=jI8k  
插入排序: "+(|]q"W  
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package org.rut.util.algorithm.support; ubwM*P  
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import org.rut.util.algorithm.SortUtil; 3`bQ0-D;  
/** YzESV Th  
* @author treeroot Zw]"p63eMa  
* @since 2006-2-2 C[L 5H  
* @version 1.0 fz(YP=@ZnP  
*/ ,8e'<y  
public class InsertSort implements SortUtil.Sort{ /eV)5`V  
Anz{u$0M[  
/* (non-Javadoc) d4| )=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C%z)D1-  
*/ y b hFDx  
public void sort(int[] data) { !"N,w9MbD  
int temp; W'C>Fn}lO?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); > Vm}u`x  
} *ERV\/  
} }9^:(ty2A  
} 8,U~ p<Gz  
UY3)6}g6  
} bo\ bs1  
7m2iL#5[  
冒泡排序: 0>28o.  
4fi4F1f  
package org.rut.util.algorithm.support; cXq9k!I%  
W Z'<iI  
import org.rut.util.algorithm.SortUtil; " .7@  
bBi>BP =  
/** xrf|c  
* @author treeroot $MR1 *_\V  
* @since 2006-2-2 k8s)PN  
* @version 1.0 B ~v6_x  
*/ Xh8U}w<k6  
public class BubbleSort implements SortUtil.Sort{ hk?i0#7W  
 .\oz  
/* (non-Javadoc) nE]rPRU}[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7J);{ &x9h  
*/ R>bg3j  
public void sort(int[] data) { /dCsZA  
int temp; -5*OSA:8x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ uH89oA/H  
if(data[j] SortUtil.swap(data,j,j-1); <WUgH6"  
} I bD u+~)  
} [A~?V.G  
} Ce+:9}[  
} cxR.:LD}  
-|V#U`mwF  
} v~OMm \  
o33t~@RX  
选择排序: LH54J;7 Y  
;MQl.?vj  
package org.rut.util.algorithm.support; ,u}wW*?,sT  
X!|eRA~o  
import org.rut.util.algorithm.SortUtil; f>Rux1Je4  
Z` kVyuQ  
/** g%J\YRo  
* @author treeroot \:@6(e Bh  
* @since 2006-2-2 |Ua);B~F  
* @version 1.0 ~C{:G;Iy0  
*/ E{)X ;kN=  
public class SelectionSort implements SortUtil.Sort { mX>N1zAz  
XVN JK-B  
/* ]EK(k7nH  
* (non-Javadoc) |dxWO  
* g{Av =66Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )"?'~5A  
*/ Fug4u?-n  
public void sort(int[] data) { &j~9{ C  
int temp; `a52{Wa  
for (int i = 0; i < data.length; i++) { Ab[o~X"  
int lowIndex = i; zHKP$k8  
for (int j = data.length - 1; j > i; j--) { "$N$:B@U  
if (data[j] < data[lowIndex]) { COsy.$|4  
lowIndex = j; 0to`=;JI  
} Y-8BL  
} ]Sj;\Iz  
SortUtil.swap(data,i,lowIndex); xbi\KT`~  
} <cZ/_+H%C  
} .RmFYV0,  
f:46.)W j<  
} >NPK;Vu  
P$z%:Q  
Shell排序: `}`Qqv  
0e&&k  
package org.rut.util.algorithm.support; T}{zh  
rI\5djiYJ  
import org.rut.util.algorithm.SortUtil; -'O|D}  
G(?1 Urxi  
/** q~#>MB}".  
* @author treeroot }Tk:?U{  
* @since 2006-2-2 &*o4~6pQ#  
* @version 1.0 ;07$G+['  
*/ #yIHr&'oX  
public class ShellSort implements SortUtil.Sort{ dLGHbeZ[(  
7Cp /{l;d  
/* (non-Javadoc) tJ_Y6oFm=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X*MK(aV3  
*/ #qk=R7" Q  
public void sort(int[] data) { |X*y-d77W  
for(int i=data.length/2;i>2;i/=2){ j=U"t\{  
for(int j=0;j insertSort(data,j,i); LK4NNZf7  
} >l8?B L  
} O*/%z r  
insertSort(data,0,1); ?7pn%_S  
} OYxYlUq  
w:nH_x#C4  
/** VOC$Kqg;  
* @param data f99"~)B|  
* @param j 8&HBR #  
* @param i I@z@s}x>  
*/ lO|LvJyx  
private void insertSort(int[] data, int start, int inc) { Ax\d{0/oL2  
int temp; "5dke^yk0  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }|/A &c  
} !"<rlB,J  
} F,)+9/S&  
} QKEtV  
FZ%h7Oe  
} \15'~ ]d  
|5`ecjb.  
快速排序: \ :s%;s51  
u0<yGsEGD  
package org.rut.util.algorithm.support; !4#qaH-Q  
|J`v w  
import org.rut.util.algorithm.SortUtil; _vb'3~'S  
I)#8}[vK  
/** LCS.C(n,  
* @author treeroot Z'9|  
* @since 2006-2-2 K_ymA,&()  
* @version 1.0 <z%**gP~G  
*/ NAtDt=  
public class QuickSort implements SortUtil.Sort{ {hOS0).(w7  
rZ+4kf6S   
/* (non-Javadoc) PfU\.[l$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M`q|GY  
*/ 2!}F+^8'P  
public void sort(int[] data) { {5  pK8  
quickSort(data,0,data.length-1); LKI\(%ba#  
} o:cTc:l)  
private void quickSort(int[] data,int i,int j){ 3QZm *. /"  
int pivotIndex=(i+j)/2; p),* 4@2<  
file://swap Q5dqn"?  
SortUtil.swap(data,pivotIndex,j); l i?@BHEf  
P 0+@,kM  
int k=partition(data,i-1,j,data[j]); lr;ubBbT  
SortUtil.swap(data,k,j); r)-{~JA!  
if((k-i)>1) quickSort(data,i,k-1); \ ;]{`  
if((j-k)>1) quickSort(data,k+1,j); \reVA$M [  
\kUQe-:he  
} NBasf n  
/** (||qFu9a  
* @param data w(`g)`  
* @param i RFS} !_t+|  
* @param j -Wmb M]Z  
* @return \WnTpl>B  
*/ 2brY\c F  
private int partition(int[] data, int l, int r,int pivot) { @}R y7H0O  
do{ Sn'!Nq>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); VFF5 Tp  
SortUtil.swap(data,l,r); nG5\vj,zB  
} 4?@#w>(  
while(l SortUtil.swap(data,l,r); 'xai5X  
return l; ZRc^}5}WA  
} 3 SbZD   
UE5,Ml~X  
} H!}L(gjEG  
 r90tXx  
改进后的快速排序: Z-ci[Zv  
W\Scak>  
package org.rut.util.algorithm.support; k0\a7$}F  
KK >j V  
import org.rut.util.algorithm.SortUtil; [ R8BcO(  
iNi1+sm  
/** 2P`./1L  
* @author treeroot +?3RC$jyw  
* @since 2006-2-2 Z)~?foe'  
* @version 1.0 /<[_V/g[t?  
*/ Z>3~n  
public class ImprovedQuickSort implements SortUtil.Sort { TBJ?8W(  
O \o@]  
private static int MAX_STACK_SIZE=4096; Gl w|*{$  
private static int THRESHOLD=10; $U7/w?gc'  
/* (non-Javadoc) hTZ6@i/pS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  Jn|<G  
*/ nIBeZof  
public void sort(int[] data) { ^fd*KM  
int[] stack=new int[MAX_STACK_SIZE]; ?Q=(?yR0]  
s8]%L4lvu  
int top=-1; +RpCh!KP  
int pivot; 6.45^'t]  
int pivotIndex,l,r; r^"sZk#  
b|x B <  
stack[++top]=0; ,mCf{V]#  
stack[++top]=data.length-1; <x;g9Z>(  
T$r/XAs  
while(top>0){ OraT$lV)_  
int j=stack[top--]; hF^JSCDz l  
int i=stack[top--]; RB""(<  
9dszn^]T  
pivotIndex=(i+j)/2; @pv:uON\  
pivot=data[pivotIndex]; oui0:Vy<  
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SortUtil.swap(data,pivotIndex,j); q |Pebe=  
cJwe4c6.m  
file://partition oliVaavj  
l=i-1; &l{ctP%q  
r=j; +YCWoX 2  
do{ j/T@-7^0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *CF80DJ  
SortUtil.swap(data,l,r); p'@z}T?F  
} H)*%eG~  
while(l SortUtil.swap(data,l,r); ^Vh^Z)gGi  
SortUtil.swap(data,l,j); KU+u.J  
~^Ga?Q_  
if((l-i)>THRESHOLD){ qB$QC  
stack[++top]=i; u5U^}<}y}  
stack[++top]=l-1; 'S v V10$5  
} TDP Q+Kg_  
if((j-l)>THRESHOLD){ =.m/ X>  
stack[++top]=l+1; #gf0*:p  
stack[++top]=j; r`)'Kd  
} v,rKuvc'  
(]fbCH:  
} t?weD{O  
file://new InsertSort().sort(data); yg|yoL'g  
insertSort(data); UAI'tRY N_  
} ;uZq_^?:9&  
/** jM{5nRQ  
* @param data Dg ~k"Ice  
*/ 5X]f}6kT  
private void insertSort(int[] data) { r:U<cL T[9  
int temp; @v /Ae_q!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R >[G6LOG  
} K"Irg.  
} ESS1 L$y  
} fE>JoQs38  
#iD`Bg!VXc  
} gIGi7x  
!*"#*)S.  
归并排序: YZ->ep}  
&"yoJ<L  
package org.rut.util.algorithm.support; 5]3Mj*u\  
vhU $GG8  
import org.rut.util.algorithm.SortUtil; ="g9>  
'J0Ea\,if0  
/** gHWsKE  %  
* @author treeroot <@n3vO6  
* @since 2006-2-2 7$L*nf  
* @version 1.0 QT"o"B  
*/ IJZx$8&A  
public class MergeSort implements SortUtil.Sort{ W>u$x=<T  
[XA:pj;rg'  
/* (non-Javadoc) -BrJ5]T>*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @[ '?AsO  
*/ d8^S~7  
public void sort(int[] data) { Hv =7+O$  
int[] temp=new int[data.length]; BDi+ *8  
mergeSort(data,temp,0,data.length-1); 'z};tIOKJk  
} T<0V ^B7  
Ht~YSQ~:y  
private void mergeSort(int[] data,int[] temp,int l,int r){ cw~-%%/  
int mid=(l+r)/2; \Dx)P[Ur  
if(l==r) return ; :-+j,G9 t  
mergeSort(data,temp,l,mid); @ `SlOKz!=  
mergeSort(data,temp,mid+1,r); #]wBXzu?  
for(int i=l;i<=r;i++){ |@MGGAk  
temp=data; *.-qbwOg  
} ;'4Kg@/  
int i1=l; `6*1mE1K&  
int i2=mid+1; sFRQFX0XoY  
for(int cur=l;cur<=r;cur++){ kl5Y{![/&f  
if(i1==mid+1) H<3a yp$  
data[cur]=temp[i2++]; 7}Jn`^!  
else if(i2>r) ENZYrWl  
data[cur]=temp[i1++]; #\O?|bN'q  
else if(temp[i1] data[cur]=temp[i1++]; t)l^$j !h@  
else @p9YHLxLjQ  
data[cur]=temp[i2++]; 3TT?GgQ  
} SiT5QJe  
} =#?=Lh  
ue!wo-|#G  
} tfd!;`B  
dYp} R>+  
改进后的归并排序: Z+S1e~~  
}vX/55  
package org.rut.util.algorithm.support; "l-b(8n  
{mB &xz:b  
import org.rut.util.algorithm.SortUtil; 9Ui|8e~=  
G -RE  
/** 2NWQiSz  
* @author treeroot 8G_KbS  
* @since 2006-2-2 A}0u-W  
* @version 1.0 PA${<wyBR_  
*/ 2!6-+]tC  
public class ImprovedMergeSort implements SortUtil.Sort { C,dRdEB>  
e\H1IR3  
private static final int THRESHOLD = 10; :stA]JB# w  
[hKt4]R  
/* NGuRyZp69&  
* (non-Javadoc) SQI =D8  
* :@sjOY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A!ak i}aT~  
*/ )ZDqj  
public void sort(int[] data) { sFonc  
int[] temp=new int[data.length]; 7! #34ue  
mergeSort(data,temp,0,data.length-1); xw~&OF&  
} Q`(h  
E9PD1ADR  
private void mergeSort(int[] data, int[] temp, int l, int r) { pq<2:F:Kl  
int i, j, k; ]s^Pw>/`  
int mid = (l + r) / 2; 2)+ddel<Z  
if (l == r) j<_)Y(x>  
return; TWo.c _l  
if ((mid - l) >= THRESHOLD) Xe:e./@  
mergeSort(data, temp, l, mid); 35fsr=  
else gjex;h  
insertSort(data, l, mid - l + 1); jV|/ C  
if ((r - mid) > THRESHOLD) Tyt1a>! qA  
mergeSort(data, temp, mid + 1, r); ?<eH!MHF  
else aj@<4A=;  
insertSort(data, mid + 1, r - mid); J={IGA  
)w&k&TY4H  
for (i = l; i <= mid; i++) { 8YwSaBwO  
temp = data; }C9P--  
} Xmaj7*f>p  
for (j = 1; j <= r - mid; j++) { *S{fyYyM  
temp[r - j + 1] = data[j + mid]; -4nSiI  
} `{W>Dy  
int a = temp[l]; 8d*W7>rq  
int b = temp[r]; ,lr\XhO  
for (i = l, j = r, k = l; k <= r; k++) { +C ){&/=#  
if (a < b) { ?D`h[ai  
data[k] = temp[i++]; !O*uQB  
a = temp; /yO|Q{C}M8  
} else { I\:(`)"r  
data[k] = temp[j--]; >.f'_2#Z&  
b = temp[j]; ZT%Q:]B+  
} oBZzMTPe  
} 6=i@t tAK  
}  /DN!"  
kMY1Xb  
/** $mq @g  
* @param data bO\E)%zp  
* @param l M~t;&po  
* @param i BP`'1Ns  
*/ ;Alw`'  
private void insertSort(int[] data, int start, int len) { _vgFcE~E@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); B$@fE}  
} H_<hZ UB  
} r&?i>.Kz8  
} w,v~  
} ZVX!=3VT  
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堆排序: &S|%>C{P.w  
9 9S-P}xd  
package org.rut.util.algorithm.support; @#= ail  
/WWD;keP5  
import org.rut.util.algorithm.SortUtil; {X'D07q  
:*MqYny&  
/** ;&v~tD7  
* @author treeroot xU_Dg56z'&  
* @since 2006-2-2 R#0Z  
* @version 1.0 qS{E+)P  
*/ }HC6m{vH(  
public class HeapSort implements SortUtil.Sort{ }E%#g#  
X[Q:c4'  
/* (non-Javadoc) [TFd|ywn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O)E8'Oe"Q  
*/ )lsR8Hi8  
public void sort(int[] data) { v Ol<  
MaxHeap h=new MaxHeap(); xOAA1#   
h.init(data); V`/D!8>  
for(int i=0;i h.remove(); sS5:5i  
System.arraycopy(h.queue,1,data,0,data.length); QFS5PZ  
} ;@R=CQ6  
wmQT$`$b  
private static class MaxHeap{ 8r46Wr7Q  
vL,:Yn@b  
void init(int[] data){ /\0 rRT  
this.queue=new int[data.length+1]; BD (Y =g  
for(int i=0;i queue[++size]=data; ,4&?`Q  
fixUp(size); ~dFdO7  
} d}2$J1`  
} MY]<^/Q  
:4V8Iz 71  
private int size=0; wcI? .  
zc n/LF  
private int[] queue; C=&rPUX{  
&eqeQD6  
public int get() { #S*`7MvM  
return queue[1]; +"i|)yUYy}  
} 4|#@41\ B  
4N- T=Ig  
public void remove() { Mt93YD-2+  
SortUtil.swap(queue,1,size--); Z Vin+z  
fixDown(1); @g{FNXY$m  
} 8NJxtT~0c~  
file://fixdown ^z%ShmM&LZ  
private void fixDown(int k) { &O:IRR7p  
int j; qz@k-Jqq d  
while ((j = k << 1) <= size) { (1pR=  
if (j < size %26amp;%26amp; queue[j] j++; 0S%xm'|N  
if (queue[k]>queue[j]) file://不用交换 hN5?u:  
break; '[z529HN  
SortUtil.swap(queue,j,k); fy6<KEea  
k = j; lzE{e6  
} 1[g -f ,  
} T.}wcQf&*  
private void fixUp(int k) { y$Rr,]L  
while (k > 1) { 8?za&v  
int j = k >> 1; Jx jP'8  
if (queue[j]>queue[k]) sT*D]J 2  
break; `Nnaw+<]  
SortUtil.swap(queue,j,k); .yF@Ow  
k = j; \|gE=5!Am=  
} /Z?$!u4I  
} c&mLK1A6  
.S{FEV  
} ILU7Yhk  
!<8-juY  
} D"z3SLFW{  
9*&c2jh  
SortUtil: XY h)59oM%  
dKk#j@[n"  
package org.rut.util.algorithm; 4m:D8&D_M  
~O c:b>~  
import org.rut.util.algorithm.support.BubbleSort; =<;C5kSD  
import org.rut.util.algorithm.support.HeapSort; a7fFp 9l!  
import org.rut.util.algorithm.support.ImprovedMergeSort; sP'U9l  
import org.rut.util.algorithm.support.ImprovedQuickSort; Xt .ca,`U  
import org.rut.util.algorithm.support.InsertSort; x_+-TC4IXn  
import org.rut.util.algorithm.support.MergeSort; CQANex4&\  
import org.rut.util.algorithm.support.QuickSort; {O=PVW2S  
import org.rut.util.algorithm.support.SelectionSort; 1`Ig A0V`"  
import org.rut.util.algorithm.support.ShellSort; ^cnTZzT#Q  
hE;|VSdo  
/** m4r<=o  
* @author treeroot \GD\N=?~  
* @since 2006-2-2  ;H4s[#K  
* @version 1.0 nf0]<x2  
*/ RD|DHio%  
public class SortUtil { o}p^q:T*  
public final static int INSERT = 1; ;Zy[2M  
public final static int BUBBLE = 2; c<a)Yqf"]  
public final static int SELECTION = 3; QG=K^g  
public final static int SHELL = 4; A`:a T{j  
public final static int QUICK = 5; 0sA+5*mdM  
public final static int IMPROVED_QUICK = 6; a_3w/9L4r  
public final static int MERGE = 7; W>j@E|m$  
public final static int IMPROVED_MERGE = 8; M-8`zA2  
public final static int HEAP = 9; ~Jh1$O,9o  
/U 3Uuk:  
public static void sort(int[] data) { *N&~Uq^  
sort(data, IMPROVED_QUICK); 2 oo/KndU  
} )kT.3 Q  
private static String[] name={ ='t}d>l  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" lv>^P>S(O  
}; we/sv9v}n  
QnA~,z/ .w  
private static Sort[] impl=new Sort[]{ ~Z~V:~  
new InsertSort(), *>h|<|T'  
new BubbleSort(), +'$5Jtz  
new SelectionSort(), k2O3{xIjc  
new ShellSort(), =<%[P9y  
new QuickSort(), S J2l6  
new ImprovedQuickSort(), U,K=(I7OBX  
new MergeSort(), T I|h  
new ImprovedMergeSort(), Fs3 :NH  
new HeapSort() Sh2BU3  
}; yv|`A2@9  
PX*}.L *x  
public static String toString(int algorithm){ ^ -4~pDv^  
return name[algorithm-1]; tZG l^mA"g  
} y_' 6bpb  
DNr*|A2<  
public static void sort(int[] data, int algorithm) { ?>Ngsp>-P  
impl[algorithm-1].sort(data); jU-aa+  
} q B IekQT  
Z (t7QFd  
public static interface Sort { nV`U{}x  
public void sort(int[] data); #W&o]FAA3y  
} as(/ >p  
WvZt~x&2  
public static void swap(int[] data, int i, int j) { .DI?-=p|_#  
int temp = data; = N;5T  
data = data[j]; I~;w Q  
data[j] = temp; d_Jj&:"l  
} dVUe!S`  
} 'b0r?A~c=  
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