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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。 ]yPqLJ  
插入排序: (n9g kO&8"  
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package org.rut.util.algorithm.support; M{hg0/}sUW  
]1pIj i[  
import org.rut.util.algorithm.SortUtil; 3fQuoQuD"}  
/** Dy8r 9  
* @author treeroot 6MdiY1Lr!K  
* @since 2006-2-2 agW@ {c  
* @version 1.0 ysf~|r4s  
*/ Ng>h"H  
public class InsertSort implements SortUtil.Sort{ dQR-H7U  
%UCr;H/  
/* (non-Javadoc) oWo- j<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |R\>@Mg#B  
*/ =xx]@  
public void sort(int[] data) { 'qX|jtdM  
int temp; ..'_o~Ka  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #d2.\X}A"3  
} z]D69O b  
} *w0%d1  
} Jcm&RI"{  
oJ|j#+Ft  
} SPmq4  
a8Nh=^Py  
冒泡排序: mmRJ9OhS  
Ob&<]  
package org.rut.util.algorithm.support; uw +M  
Qe0lBR?H  
import org.rut.util.algorithm.SortUtil; i|*)I:SHU  
ocS5SB]8  
/** \<TXS)w]  
* @author treeroot G..aiA  
* @since 2006-2-2 @eIJ]p  
* @version 1.0 r/6o \-  
*/ _#8RSr8'y  
public class BubbleSort implements SortUtil.Sort{ +@k+2?] FO  
eu|;eP-+d  
/* (non-Javadoc) ' x35=@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !s?nJ(p  
*/ !6>~?gNd  
public void sort(int[] data) { Hm'=aff6A  
int temp; O]Qd<%V'x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3Xy-r=N.l  
if(data[j] SortUtil.swap(data,j,j-1); en*GM}<V  
} /F'sb[  
} 4s{~r  
} .qZ~_xkd  
} '|p$)yx2  
9b"=9y,  
} 9=h'9Wo  
<oA7'|Bu<  
选择排序: 2OR{[L*  
b:]V`uF?  
package org.rut.util.algorithm.support; A='N=^Pm  
y^v6AM  
import org.rut.util.algorithm.SortUtil; KP5C} ZK+s  
?8Z0Gqt74  
/** ,a]?S^:y]  
* @author treeroot NDlF0f  
* @since 2006-2-2 jeH~<t{  
* @version 1.0 .Blf5b  
*/ n'kG] Q  
public class SelectionSort implements SortUtil.Sort { =Bhe'.]QSx  
aa#Y=%^  
/* =sJ7=39  
* (non-Javadoc) H0`]V6+<f  
* -0{r>,&Mm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8sTp`}54 J  
*/ 9V@V6TvW>&  
public void sort(int[] data) { G5aieD.#  
int temp; K<qk.~ S  
for (int i = 0; i < data.length; i++) { +:!7L= N#  
int lowIndex = i; q[W 0 N >  
for (int j = data.length - 1; j > i; j--) { Q&=w_Wc  
if (data[j] < data[lowIndex]) { 4Vi`* !  
lowIndex = j; 1A G<$d5U|  
} >A"v ed8  
} DiwxXqY  
SortUtil.swap(data,i,lowIndex); \T:i{.i  
} 6BbGA*%{  
} ~8P!XAU56%  
z(Pe,zES  
} y8!4q  
p,>5\Zre~  
Shell排序: L`p4->C9A  
Za3]d+qm  
package org.rut.util.algorithm.support; dP<=BcH>f  
 s ;oQS5Y  
import org.rut.util.algorithm.SortUtil; 1o;J,dYu  
[] `&vWZ  
/** _'>oXQJ  
* @author treeroot h WtVWVNL  
* @since 2006-2-2 2ZMb<b4H  
* @version 1.0 e .2ib?8  
*/ 6dN7_v)  
public class ShellSort implements SortUtil.Sort{ T| V:$D'  
IsM}' .  
/* (non-Javadoc) A1D^a,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9m<jcxla$  
*/ PHXZ=A+  
public void sort(int[] data) { 4@n1Uk  
for(int i=data.length/2;i>2;i/=2){ `c5"d  
for(int j=0;j insertSort(data,j,i); :'3XAntZA  
} X=!^] 3zH  
} w?wG(+X7  
insertSort(data,0,1); vss(twg  
} : $Y9jR  
m)v"3ib  
/** Nj xoTLI  
* @param data bE#,=OI$  
* @param j )ufg9"\  
* @param i ICs\ z  
*/ %g$V\zmU  
private void insertSort(int[] data, int start, int inc) { !^=*Jq>  
int temp; ,dov<U[ia  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (-xS?8x$  
} 1[qLA!+  
} QnXA*6DJ  
} G!W[8UG  
E^lvbLh'  
} Wm"4Ae:B  
Z X(z;|l45  
快速排序: gp^ 5#  
d + /&?3  
package org.rut.util.algorithm.support; C8e !H  
9S7 kUl{  
import org.rut.util.algorithm.SortUtil; K[Kh&`T  
&7b|4a8B%  
/** Xg SxN!I  
* @author treeroot !\i\}feb  
* @since 2006-2-2 {7;8#.S72  
* @version 1.0 hMUs" <.  
*/ GCX G/k?w:  
public class QuickSort implements SortUtil.Sort{ (m.ob+D  
8a="/J  
/* (non-Javadoc) V\6[}J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^G.Xc\^w:  
*/ >.'*) @vQi  
public void sort(int[] data) { Nz+9 49X  
quickSort(data,0,data.length-1); rI>aAW'  
} h\.zdpR  
private void quickSort(int[] data,int i,int j){ O-cbX/d  
int pivotIndex=(i+j)/2; ~Ro9u p  
file://swap s3O} 6  
SortUtil.swap(data,pivotIndex,j); Q`D~5ci  
sz {e''q  
int k=partition(data,i-1,j,data[j]); H]p!\H  
SortUtil.swap(data,k,j); , GY h9  
if((k-i)>1) quickSort(data,i,k-1); Q/I! }C4  
if((j-k)>1) quickSort(data,k+1,j); `'c_=<&n  
x&9hI  
} gb> }v7  
/** fX.>9H[w@~  
* @param data '0uh D.|G  
* @param i ZF|+W?0&%  
* @param j 9C[ywp  
* @return lR[qqFR  
*/ n9A7K$ZD@  
private int partition(int[] data, int l, int r,int pivot) { bQP{|  
do{ Ikiib WQL+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /.i.TQ]  
SortUtil.swap(data,l,r); ?-^m`  
} bKQ"ax>6p  
while(l SortUtil.swap(data,l,r); rN<b?KE  
return l; H nUYqhZS  
} H(2]7dRS%  
Xn,v]$M!  
} M57T2]8,  
w{uuSe  
改进后的快速排序: T2Y,U {  
g'=B%eO$j:  
package org.rut.util.algorithm.support; . I'o  
x.zbD8l/9  
import org.rut.util.algorithm.SortUtil; (v|} \?L  
: G`hm{  
/** DrBUe'RH:M  
* @author treeroot \ZhfgE8{%  
* @since 2006-2-2 {h2TD P  
* @version 1.0 IWveW8qJ  
*/ :.d:9Z|_  
public class ImprovedQuickSort implements SortUtil.Sort { \&3"<6xA  
f=!VsR2o  
private static int MAX_STACK_SIZE=4096; t|!j2<e  
private static int THRESHOLD=10; z=_Ef3`M  
/* (non-Javadoc) \, &co  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $w0lrh[+  
*/ @qjfZH@  
public void sort(int[] data) { ;9ly'<up  
int[] stack=new int[MAX_STACK_SIZE]; nJ"YIT1K]p  
s^|.Zr;,>  
int top=-1; ^Q ps> A(  
int pivot; Cc<,z*T  
int pivotIndex,l,r; d,tU#N{Q6  
mBJeqG  
stack[++top]=0; TsUOpEuX  
stack[++top]=data.length-1; -zO2|@S,  
{^rs#, W  
while(top>0){ k`9)=&zX+  
int j=stack[top--]; g'u?Rn 7*J  
int i=stack[top--]; <[J[idY1he  
-,aeM~  
pivotIndex=(i+j)/2; V8wKAj Ux  
pivot=data[pivotIndex]; B Ma)O  
@81Vc<dJ  
SortUtil.swap(data,pivotIndex,j); >'xGp7}y  
gE hN3(  
file://partition @]c(V%x   
l=i-1; hj$ e|arB  
r=j; `^Eae  
do{ N2$I}q%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); c$`4*6  
SortUtil.swap(data,l,r); }KKY6D|d>  
} X3:XTuV   
while(l SortUtil.swap(data,l,r); 2gjGeM  
SortUtil.swap(data,l,j); z rv#Xa!O\  
Gqcz< =/  
if((l-i)>THRESHOLD){ L9ap(  
stack[++top]=i; zT|)uP*  
stack[++top]=l-1; 7Irau_  
} o/ mF #  
if((j-l)>THRESHOLD){ m6yIR6H  
stack[++top]=l+1; 8W+gl=C~  
stack[++top]=j; JwRF(1_sM  
} `)h6j)xiQ  
J~iBB~x.  
} p!V>XY'N^  
file://new InsertSort().sort(data); Z,;cCxE  
insertSort(data); ror|R@;y  
} P;8>5;U4-  
/** Enq|Y$qm  
* @param data /?6|&  
*/ J5[~LZKW  
private void insertSort(int[] data) { r-IVb&uF b  
int temp; :!f(F9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q$.{j"cZV  
} dg7=X{=9jv  
} 8; R|  
} V~yAE @9  
XJ+6FT/qss  
} %77p5ctW  
$ RwB_F  
归并排序: oi&Wo'DX  
 oM1 6C|  
package org.rut.util.algorithm.support; (zYy }g#n  
]:$ O{y  
import org.rut.util.algorithm.SortUtil; vN OH&ja-s  
b*mKei  
/** (9mMkU=  
* @author treeroot lE ;jCN  
* @since 2006-2-2 XC3Kh^  
* @version 1.0 A +w v-~3  
*/ o1OBwPj  
public class MergeSort implements SortUtil.Sort{ {8EW)4Hf  
~; OYtz  
/* (non-Javadoc) _uu<4c   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cj|*_}  
*/ u%dKig  
public void sort(int[] data) { %_aMl  
int[] temp=new int[data.length]; w$5A|%Y+V}  
mergeSort(data,temp,0,data.length-1); R,!Q Zxmg  
} daAyx-  
TfZ6F8|B  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;#) mLsl  
int mid=(l+r)/2; JH]K/sC>  
if(l==r) return ; s& {Qdf  
mergeSort(data,temp,l,mid); Lj %{y.Rj  
mergeSort(data,temp,mid+1,r); q 'a  
for(int i=l;i<=r;i++){ 5NXt$k5  
temp=data; '69ZdP/xX  
} &MgeYpd  
int i1=l; \hP=-J[~C  
int i2=mid+1; @TA9V@?)  
for(int cur=l;cur<=r;cur++){ +|%Sx  
if(i1==mid+1) ])#\_' fg  
data[cur]=temp[i2++]; %im#ww L%  
else if(i2>r) ,rwuy[Q8  
data[cur]=temp[i1++]; '!Kf#@';u  
else if(temp[i1] data[cur]=temp[i1++]; x q-$\#O  
else nxap\Lf  
data[cur]=temp[i2++]; $ Cjk  
} FkupO I  
} AdoZs8Q  
;}.Kb  
} {sv{847V  
rp :wQ H7  
改进后的归并排序: F X1ZG!  
f|aDTWF  
package org.rut.util.algorithm.support; VzRx%j/i  
]yX@'f  
import org.rut.util.algorithm.SortUtil; D;F{1[s(  
#S+Z$DQD  
/** L8vOBI7N  
* @author treeroot -#A:`/22  
* @since 2006-2-2 4`2$_T$ F  
* @version 1.0 P8gX CX!>U  
*/ gKb0)4 AK  
public class ImprovedMergeSort implements SortUtil.Sort { K,}w]b  
~%|G+m>  
private static final int THRESHOLD = 10; g.#+z'l  
lg:y|@Y''  
/* {R&ZqEo'D  
* (non-Javadoc) ;? uC=o>Z{  
* a%J6f$A#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vU/ D7  
*/ FX,$_:f6Y  
public void sort(int[] data) { I8op>^N"  
int[] temp=new int[data.length]; C@HD(..#  
mergeSort(data,temp,0,data.length-1); U06o ;s(  
} EH+~].PJd  
Dd2Lx&9  
private void mergeSort(int[] data, int[] temp, int l, int r) { "t&{yBQ0u  
int i, j, k; KLt %[$CTi  
int mid = (l + r) / 2;  i j&p4  
if (l == r)  td(M#a-  
return; VKLU0*2R  
if ((mid - l) >= THRESHOLD) ~j,TVY  
mergeSort(data, temp, l, mid); BSp$F WvT?  
else Q)Dwq?  
insertSort(data, l, mid - l + 1); +~|AT+|iI  
if ((r - mid) > THRESHOLD) 1}`LTPW9  
mergeSort(data, temp, mid + 1, r); RyRqH:p)3  
else ~'  =lou  
insertSort(data, mid + 1, r - mid); voRfjsS~  
":d*dl  
for (i = l; i <= mid; i++) { jgvh[@uB?  
temp = data; :?r*p>0$  
} (@ea|Fd#4  
for (j = 1; j <= r - mid; j++) { g^o_\ hp  
temp[r - j + 1] = data[j + mid]; gf$HuCh|  
} It 2UfW  
int a = temp[l]; qZ G-Lh  
int b = temp[r]; 4&}\BU*  
for (i = l, j = r, k = l; k <= r; k++) { U %:c],Fk  
if (a < b) { i1/}XV  
data[k] = temp[i++]; 12r` )  
a = temp; 4NVgOr:  
} else { &?$\Y,{  
data[k] = temp[j--]; Cals?u#U=  
b = temp[j]; B {i&~k  
} Tj,Nmb>Q7'  
} g+Ph6W  
} h1%y:[_  
?\yB)Nd y  
/** \!X?zR_  
* @param data j3 P RAe  
* @param l Rx. rj~  
* @param i tmxPO e  
*/ BpXEK.Xw  
private void insertSort(int[] data, int start, int len) { HRRngk#lV  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); f0F#Yi{fw  
} VA]ZR+m  
} @bQ!zCI  
} k`IrZHMw  
} E2yz=7sv5  
G(i\'#5+  
堆排序: l Z~+u  
*#ompm  
package org.rut.util.algorithm.support; ucFw,sB1  
r|8V @.@i  
import org.rut.util.algorithm.SortUtil; x\;GoGsez  
3Bd4 C]E  
/** H5 q:z=A  
* @author treeroot Nzc>)2% N  
* @since 2006-2-2 59qnEIi  
* @version 1.0 GHrBK&  
*/ |2UauTp5yK  
public class HeapSort implements SortUtil.Sort{ HU3Vv<lz  
bf^ly6ml  
/* (non-Javadoc) uf0^E3H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V9$-twhu  
*/ .5k^f5a  
public void sort(int[] data) { M7H~;S\3IM  
MaxHeap h=new MaxHeap(); xucIjPi]  
h.init(data); .%hQJ{vf-^  
for(int i=0;i h.remove(); B=x~L  
System.arraycopy(h.queue,1,data,0,data.length); T.euoFU{Z  
} k*9%8yi_ U  
3z$\&& BR  
private static class MaxHeap{ ks^|>  
0- Yeu5A  
void init(int[] data){ $pBr &,  
this.queue=new int[data.length+1]; (jneEo=vr  
for(int i=0;i queue[++size]=data; { ;' :h  
fixUp(size); s_` V*`n&  
} ^*zW"s  
} B$EK_@M  
IHfSkFz`j  
private int size=0; )ldUayJ  
r?XDvU  
private int[] queue;  XDvq7ZD  
,9$>d}N  
public int get() { Lj-{t% }  
return queue[1]; 'XME?H:q a  
} z7$}#)Z7  
1uj05aZh}  
public void remove() { c; d"XiA  
SortUtil.swap(queue,1,size--); $u- lo|  
fixDown(1); 1o)=GV1  
} )muv;Rf`e5  
file://fixdown yL4 -4  
private void fixDown(int k) { ?-M)54b\  
int j; Cg?I'1]o6  
while ((j = k << 1) <= size) { K;kLQ2)  
if (j < size %26amp;%26amp; queue[j] j++; {)jk_&c7  
if (queue[k]>queue[j]) file://不用交换 }W)Mwu'W  
break; _/8y1) I  
SortUtil.swap(queue,j,k); (T`q++  
k = j; y#GCtkhi  
} )[RpZpd`*  
} \j/}rzo]  
private void fixUp(int k) { )uu wwz  
while (k > 1) { xP{m9_Qj  
int j = k >> 1; KXDz'9_  
if (queue[j]>queue[k]) ,$SkaTBe  
break; <y'qo8oqF  
SortUtil.swap(queue,j,k); } pSt@3o,  
k = j; N)Qlkz$X  
} ^w ]1qjGw  
} jBGG2[hV  
O\:;q*]  
} Y~}QJ+`?  
.M`LUb"!  
} SSo~.)J  
xBt4~q;#sE  
SortUtil: xg4T` ])  
}$&);7(w  
package org.rut.util.algorithm; =54Vs8.  
)OS>9 kFH  
import org.rut.util.algorithm.support.BubbleSort; .Lp Nm'=R  
import org.rut.util.algorithm.support.HeapSort; d"Ml^rAn  
import org.rut.util.algorithm.support.ImprovedMergeSort; )62q|c9F  
import org.rut.util.algorithm.support.ImprovedQuickSort; eF*TLI<[^I  
import org.rut.util.algorithm.support.InsertSort; qL u8!|QT  
import org.rut.util.algorithm.support.MergeSort; }b<87#Nb9R  
import org.rut.util.algorithm.support.QuickSort; ArLz;#AOn  
import org.rut.util.algorithm.support.SelectionSort; yg.\^C  
import org.rut.util.algorithm.support.ShellSort; wZ}n3R,   
u_hE7#i  
/** yDDghW'\WU  
* @author treeroot dW:w<{a!R  
* @since 2006-2-2 T;xHIg4  
* @version 1.0 Bl:{p>-q  
*/ F?!};~$=Z  
public class SortUtil { fB@K'JQG  
public final static int INSERT = 1; nA|gQibA  
public final static int BUBBLE = 2; kwDjK"  
public final static int SELECTION = 3; GC,vQ\  
public final static int SHELL = 4; ?T$*5d  
public final static int QUICK = 5; 5>0\e_V  
public final static int IMPROVED_QUICK = 6; 0]/,m4a#n  
public final static int MERGE = 7; 5? S{W  
public final static int IMPROVED_MERGE = 8; :4Id7Ce  
public final static int HEAP = 9; _wIBm2UO  
&*LA_]1@  
public static void sort(int[] data) { Y8{T.\%\+  
sort(data, IMPROVED_QUICK); >}xAg7\^  
} w50.gr7  
private static String[] name={ OYQXi  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?*(r1grHl  
}; ptnMCF  
sj?`7kg  
private static Sort[] impl=new Sort[]{ A8CIP:Z  
new InsertSort(), V!jK3vc  
new BubbleSort(), _3-RoA'UZr  
new SelectionSort(), 5(mCBH  
new ShellSort(),  3J'Bm"  
new QuickSort(), ,k`YDy|#e  
new ImprovedQuickSort(), m? ]zomP  
new MergeSort(), Ncs4<"{$  
new ImprovedMergeSort(), ?HEo9/ *7  
new HeapSort() '2Mjz6mBDA  
}; W o<PmSt9i  
({ :yw  
public static String toString(int algorithm){ .YnP% X=  
return name[algorithm-1]; ~5XL@jI^  
} 8YT_DM5iI  
. x\/XlM  
public static void sort(int[] data, int algorithm) { 6:SK{RSURC  
impl[algorithm-1].sort(data); ;p?42rCIcl  
} BWqik_  
[MSDk"o&  
public static interface Sort { S|O%h}AH;  
public void sort(int[] data); *Xf[b)FR  
} QSl:=Q'  
_>Pe]3  
public static void swap(int[] data, int i, int j) { c,{&  
int temp = data; sM);gI14  
data = data[j]; +aXMHT"U  
data[j] = temp; pGZl.OI  
} |e.3FjTH  
} T7WZ(y 3C  
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