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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。 F@hYA  
插入排序: bV3lE6z  
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package org.rut.util.algorithm.support; \8"QvC]  
7<yp"5><)  
import org.rut.util.algorithm.SortUtil; DuF7HTN[K  
/** ^'B-sz{{  
* @author treeroot B <+K<,S  
* @since 2006-2-2 WOO%YU =  
* @version 1.0 m.V,I}J.q  
*/ ~tNY"{OV#  
public class InsertSort implements SortUtil.Sort{ <F=Dj*]  
ck$2Ue2`@w  
/* (non-Javadoc) / Dw@d,&[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p^8 JLC  
*/  C6)R#  
public void sort(int[] data) { 0VIZ=-e  
int temp; B~_Spp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -SJSTO[/J  
} J v<$*TVS0  
} l<2oklo5  
} H'h#wV`(  
> tEK+Y|N}  
} rB evVc![  
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冒泡排序: !~d'{sy6  
(zmNa}-  
package org.rut.util.algorithm.support; kZK//YN#  
taCCw2s-8*  
import org.rut.util.algorithm.SortUtil; "=ElCaP}  
U"B.:C2  
/** DoG%T(M!a9  
* @author treeroot L *{QjH  
* @since 2006-2-2 c `ud;lI  
* @version 1.0 y.fs,!|%@  
*/ A^cU$V%?W  
public class BubbleSort implements SortUtil.Sort{ Oc^m_U8>^  
kdBV1E+:C  
/* (non-Javadoc) 8;8YA1@w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) od(:Y(4  
*/ *N'hA5.z  
public void sort(int[] data) { ;ct)H* y  
int temp; !Y|8z\ Q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {WKOJG+.  
if(data[j] SortUtil.swap(data,j,j-1); ` #=fA  
} 2R] XH 0   
} QxA0I+i  
} R|H[lbw  
} &PSTwZd  
[%t3[p<)O  
} _^b@>C>O  
,wlbIl~  
选择排序: Tr$i= M  
nIR*_<ow  
package org.rut.util.algorithm.support; + lP5XY{  
UE{,.s  
import org.rut.util.algorithm.SortUtil; }<.7xz|V  
363cuRP  
/** Fj,(_^  
* @author treeroot h*G#<M  
* @since 2006-2-2 `LE^:a:8,  
* @version 1.0 )X~#n  
*/ 2 mSD"[%  
public class SelectionSort implements SortUtil.Sort { ^A- sS~w  
u2\+?`Ox  
/*  *[VEF  
* (non-Javadoc) 0FTRm2(  
* {f&NStiB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &7fY_~)B  
*/ [4ee <J  
public void sort(int[] data) { 'qdg:_L"  
int temp; ^t`f1rGR  
for (int i = 0; i < data.length; i++) { )>?! xx_`  
int lowIndex = i; b#Jo Xa9  
for (int j = data.length - 1; j > i; j--) { jzMhJ  
if (data[j] < data[lowIndex]) { 'xQna+%h  
lowIndex = j; !8we8)7  
} 32s5-.{c/f  
} cJSVT8  
SortUtil.swap(data,i,lowIndex); )-)ss"\+Ju  
} 692Rw}/  
} Xm%iPrl D  
Sy4 mZ}:  
} ^v ]UcnB0  
3Ca \`m)l  
Shell排序: E]\D>[0O  
hx*HY%\P  
package org.rut.util.algorithm.support; Akv(} !g  
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import org.rut.util.algorithm.SortUtil; \5t`p67Ve_  
C:rRK*  
/** <%M\7NDWDA  
* @author treeroot ? 7/W>  
* @since 2006-2-2 eVZa6la"  
* @version 1.0 1NuR/DO  
*/ a#YuKh?  
public class ShellSort implements SortUtil.Sort{ +ylxezc  
8mk}nex  
/* (non-Javadoc) N$C{f;xV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c!tvG*{  
*/ zhuy ePn  
public void sort(int[] data) { LKIW*M  
for(int i=data.length/2;i>2;i/=2){ &7$,<9.  
for(int j=0;j insertSort(data,j,i); +fC#2%VnU  
} Vxp$#3 ;S  
} FYp|oD2=1  
insertSort(data,0,1); 9B qQ^`bu  
} '.]e._T  
\Y51KB\  
/** TTeAa  
* @param data x1.3W j  
* @param j >{j,+$%kp  
* @param i <P+G7!KZ&  
*/ 6W)xj6<@  
private void insertSort(int[] data, int start, int inc) { I++W0wa.n  
int temp; }%-UL{3%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [LJ705t  
} T r SN00  
} JVD@I{  
} +L^A:}L(  
[54@irH  
} )$ ofl%+  
u&1j>`~qJ  
快速排序: >v^2^$^u  
."~7 \E> t  
package org.rut.util.algorithm.support; 0t5Q9#RY  
P]!LN\[  
import org.rut.util.algorithm.SortUtil; >{O[t2&  
EO4" Z@ji  
/** xDPQG`6  
* @author treeroot hg[l{)Q  
* @since 2006-2-2 03X<x|  
* @version 1.0 9F2P(aS  
*/ qWRNHUd  
public class QuickSort implements SortUtil.Sort{ el <<D  
"wT ~$I"  
/* (non-Javadoc) uS! 35{.>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .\z|Fr  
*/ [47K7~9p  
public void sort(int[] data) { ?RgU6/2  
quickSort(data,0,data.length-1); Rz<d%C;R  
} #,f}lV,&  
private void quickSort(int[] data,int i,int j){ F<PWBs%  
int pivotIndex=(i+j)/2; 6MLN>)t  
file://swap 7h9fQ&y  
SortUtil.swap(data,pivotIndex,j); eh({K;>  
,W)IVc   
int k=partition(data,i-1,j,data[j]); m [g< K  
SortUtil.swap(data,k,j); 33#7U+~]@  
if((k-i)>1) quickSort(data,i,k-1); E1Ru)k{B  
if((j-k)>1) quickSort(data,k+1,j); xJ[k#?T'  
,<uiitOo  
} QrNL7{  
/** /%J&/2Wz  
* @param data *j_fG$10g  
* @param i IyG = 7  
* @param j |xsV(jK8  
* @return M `9orq<  
*/ rZ8Y=) e  
private int partition(int[] data, int l, int r,int pivot) { VgFF+Eg  
do{ D&z'tf5  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #lBpln9  
SortUtil.swap(data,l,r); Ie^Dn!0S  
} rm<(6zY  
while(l SortUtil.swap(data,l,r); //Ck1cI#h  
return l; B$sB1M0q  
} |lrLTI^a  
W& w -yZ  
} IZoa7S&t  
'*|Wi}0R  
改进后的快速排序: noV]+1#"V  
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package org.rut.util.algorithm.support; =EgiV<6vcH  
T dlF~ca|  
import org.rut.util.algorithm.SortUtil;  k/ls!e?  
w-pdpbHV  
/** YD 1u  
* @author treeroot weYP^>gH'  
* @since 2006-2-2 *^ g7kCe(  
* @version 1.0 43^%f-J 5  
*/ 8lh{ R  
public class ImprovedQuickSort implements SortUtil.Sort { dUyit-  
]^uO3!+  
private static int MAX_STACK_SIZE=4096; *2Il{KO A^  
private static int THRESHOLD=10; T}jryN;J5  
/* (non-Javadoc) HNu/b)-Rb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =0cyGo  
*/ % V/J6  
public void sort(int[] data) { 7;ZSeQ yC  
int[] stack=new int[MAX_STACK_SIZE]; :''^a  
?KDI'>"-v  
int top=-1; T.]+T[}!  
int pivot; a=>PGriL  
int pivotIndex,l,r; GcmN40  
pn<M`,F~q  
stack[++top]=0; >vF=}1_L  
stack[++top]=data.length-1; D7T(B=S6  
-$yNJ5F`  
while(top>0){ %{Ez0XwGCn  
int j=stack[top--]; 7+QD=j-  
int i=stack[top--]; R s_bM@  
l6IpyIex  
pivotIndex=(i+j)/2; f^\qDvPur  
pivot=data[pivotIndex]; 7vax[,a I  
{B8W>>E  
SortUtil.swap(data,pivotIndex,j); wyvrNru<l4  
$)t ]av  
file://partition tEhYQZ  
l=i-1; `],'fT|,S  
r=j; KAH9?zI)M  
do{ p}_n :a  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Rl@k~;VV  
SortUtil.swap(data,l,r); ('BFy>@  
} L8sHG$[  
while(l SortUtil.swap(data,l,r); gI a/sD2m>  
SortUtil.swap(data,l,j); ]NgK(I U  
*<Yn  
if((l-i)>THRESHOLD){ ^o^[p %  
stack[++top]=i; h.+{cOA;n  
stack[++top]=l-1; 0EiURVX  
} .4P5tIn\  
if((j-l)>THRESHOLD){ 6 B>1"h%Wf  
stack[++top]=l+1; BBnW0vAZ*  
stack[++top]=j; 4Rj;lAlwB  
} *;b.x"  
[ aC7  
} F/GfEMSE  
file://new InsertSort().sort(data); R+,eXjz"  
insertSort(data); owHV&(Go(B  
} `D)ay  
/** $h"Ht2/ J  
* @param data $=?1>zvF  
*/ r,F~Vwa}  
private void insertSort(int[] data) { >; a_i>[  
int temp; 3>LyEXOW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~gU.z6us  
} .PjJ g^^  
} 78a!@T1#  
} e`gOc*  
.<ux Z  
} Ucnj7>+"  
44;ZX$HL  
归并排序: "]*16t%Z%x  
F-K=Ot j  
package org.rut.util.algorithm.support; UykOQ-2-n  
`-qRZh@E  
import org.rut.util.algorithm.SortUtil; pZ4]K xX@  
" p]bsJG  
/** l"9.zPvT<  
* @author treeroot x0aPY;,N0  
* @since 2006-2-2 q:2Vw`g'  
* @version 1.0 n27df9L  
*/ t\YN\`XD  
public class MergeSort implements SortUtil.Sort{ .1F(-mLd  
FtBYPSGz  
/* (non-Javadoc) #H]b Xr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) % H"A%  
*/ ki/xo^Y2<  
public void sort(int[] data) { jY^wqQls  
int[] temp=new int[data.length]; ="%nW3e@  
mergeSort(data,temp,0,data.length-1); nsO!   
} 'C=8.P?  
m$glRs @  
private void mergeSort(int[] data,int[] temp,int l,int r){ eK]g FXk  
int mid=(l+r)/2; BLc&q)  
if(l==r) return ; Twscc"mK  
mergeSort(data,temp,l,mid); l!Bc0  
mergeSort(data,temp,mid+1,r); @  s  
for(int i=l;i<=r;i++){ f5)4H  
temp=data; w]n ,`r^  
} a%3V< "f  
int i1=l; ;^QG>OP$  
int i2=mid+1; 1<Vc[p&  
for(int cur=l;cur<=r;cur++){ K.A!?U=  
if(i1==mid+1) X6_m&~}15  
data[cur]=temp[i2++]; Vs>/q:I  
else if(i2>r) ]-  
data[cur]=temp[i1++]; 45cMG~]p  
else if(temp[i1] data[cur]=temp[i1++]; | CNsa  
else S;0,UgB1  
data[cur]=temp[i2++]; *.g0;\HF  
} 'G3;!xk$  
} 6U{&`8C  
{+Rf?'JZH  
} ZY%]F,Y  
6.]x@=Wm  
改进后的归并排序: +APf[ZpU  
gQpF(P  
package org.rut.util.algorithm.support; OKDBzl  
^:JZ.r  
import org.rut.util.algorithm.SortUtil; >s\j/yM  
eBZ^YY<*g  
/** \Qa6mt2h  
* @author treeroot E_VLI'Hn?  
* @since 2006-2-2 x)'4u6;d  
* @version 1.0 yn;h.m[):  
*/ aOWE\I c8  
public class ImprovedMergeSort implements SortUtil.Sort { _O!)aD  
y1DP`Ro  
private static final int THRESHOLD = 10; #N`~. 96  
NL})_.Og  
/* & w{""'  
* (non-Javadoc) D;@*  
* &"bcI7uGT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'B;aXy/JC  
*/ CTu#KJ?j  
public void sort(int[] data) { U1&pcwP  
int[] temp=new int[data.length]; 7%aaqQ1T  
mergeSort(data,temp,0,data.length-1); B1]5%B  
} EC6&#)g;CO  
#&+0hS  
private void mergeSort(int[] data, int[] temp, int l, int r) { w6F'rsko]  
int i, j, k; w#v8a$tT  
int mid = (l + r) / 2; A?{ X5` y  
if (l == r) "zSi9]j  
return; p1B~:9y9X  
if ((mid - l) >= THRESHOLD) xFZA1 8  
mergeSort(data, temp, l, mid); i#I+   
else i?R+Ul`Q  
insertSort(data, l, mid - l + 1); V=";vRS8  
if ((r - mid) > THRESHOLD) &h=O;?dO  
mergeSort(data, temp, mid + 1, r); 4@6!E^  
else R/)cEvB-0  
insertSort(data, mid + 1, r - mid); kz]vXJ  
F.P4c:GD  
for (i = l; i <= mid; i++) { 7I~Ww{  
temp = data; g?V>+oMx  
} ,#G>&  
for (j = 1; j <= r - mid; j++) { v J*IUy  
temp[r - j + 1] = data[j + mid]; HJl$v#]#+  
} J[ 9yQ  
int a = temp[l]; G{*m] 0Q  
int b = temp[r];  <b7 4L  
for (i = l, j = r, k = l; k <= r; k++) { [t55Kz*cD  
if (a < b) { :>gzWVE<  
data[k] = temp[i++]; d4c-(ZRl  
a = temp; a\an  
} else { ,: X+NQ  
data[k] = temp[j--]; / H+br_D9  
b = temp[j]; @DgJxY|  
} XCU.tWR:  
} xEBiBsk d  
} td^2gjr^5  
 /1-  
/** M/GQQG;  
* @param data h4C DZ  
* @param l n`";ctQT  
* @param i $ JI`&  
*/ `_Bvae j?,  
private void insertSort(int[] data, int start, int len) { 0-~Y[X"9.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8%s ^>.rG  
} G5W6P7-<X  
} iTgGf  
} =G9%Hz5~:  
} O@[c*3]e  
0;z-I"N  
堆排序: =ECw'  
@xR7>-$0p  
package org.rut.util.algorithm.support; Q+|8|V}w  
fr S1<+  
import org.rut.util.algorithm.SortUtil; ~S}>|q$  
hNB;29r~  
/** P;[5#-e  
* @author treeroot %+oWW5q7  
* @since 2006-2-2 8cn)ox|J[  
* @version 1.0 g|*2O}<  
*/ l c)*HYqU  
public class HeapSort implements SortUtil.Sort{ fq/F| c  
jR7 , b5  
/* (non-Javadoc) bF %#KSVw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YK*2  
*/ 8 [i#x|`g  
public void sort(int[] data) { P_+S;(QQ~d  
MaxHeap h=new MaxHeap(); DX.u"&Mm  
h.init(data); ty]JUvR@  
for(int i=0;i h.remove(); dDN#>|  
System.arraycopy(h.queue,1,data,0,data.length); ay6G1\0W  
} xP 3_  
X}'3N'cbkU  
private static class MaxHeap{ #.p^ S0\pw  
lbrob' '+  
void init(int[] data){ )t={+^Xe  
this.queue=new int[data.length+1]; V x1C4  
for(int i=0;i queue[++size]=data; FH}n]T  
fixUp(size); .>>@q!!s!  
} x.ZV<tDi7  
} ,p\^n`A32  
iRo UM.%  
private int size=0; F7J-@T<  
8'J> @ uW  
private int[] queue; yrO'15TB  
k:PO"<-U  
public int get() { zR h1  
return queue[1]; BDZB;DPb  
} (V @g?|LZ  
M $#zvcp  
public void remove() { STu!v5XY}-  
SortUtil.swap(queue,1,size--); +B^ / =3P  
fixDown(1); /s& xI  
} RL |.y~  
file://fixdown 1C+Y|p?KA  
private void fixDown(int k) {  ])}{GW  
int j; i`7{q~d=  
while ((j = k << 1) <= size) {  'vj45b  
if (j < size %26amp;%26amp; queue[j] j++; +Y(cs&V*  
if (queue[k]>queue[j]) file://不用交换 }MY7<sMDOy  
break; L q8}z-?  
SortUtil.swap(queue,j,k); s`xp6\$  
k = j; > C{^{?~u  
} 9 Am&G  
} +o(t5O[G  
private void fixUp(int k) { UTKS<.q  
while (k > 1) { *3WK:0  
int j = k >> 1; ??12 J#  
if (queue[j]>queue[k]) eS fT +UL  
break; JV(eHuw  
SortUtil.swap(queue,j,k); 4;Z`u.1  
k = j; *c7kB}/  
} } IFZ$Y  
} 7}-.U=tnP  
sp0& " &5  
} K CJ zE>  
(f5!36mz  
} *D #H-]9  
(~xFd^W9o  
SortUtil: j(F%uUpN  
|xQG  
package org.rut.util.algorithm; znhe]&Fw  
xr?=gY3E;  
import org.rut.util.algorithm.support.BubbleSort; -liVYI2s  
import org.rut.util.algorithm.support.HeapSort; j]rE0Og  
import org.rut.util.algorithm.support.ImprovedMergeSort; rEfk5R  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1c&/&6 #5  
import org.rut.util.algorithm.support.InsertSort; 9vCn^G%B  
import org.rut.util.algorithm.support.MergeSort; Smo^/K`f9  
import org.rut.util.algorithm.support.QuickSort; bB3Mpaw@  
import org.rut.util.algorithm.support.SelectionSort; nf+8OH7  
import org.rut.util.algorithm.support.ShellSort; yk!,{Q?<$  
<%hSBDG!x  
/** 'P32G?1C&p  
* @author treeroot j/3827jw=  
* @since 2006-2-2 "p.MJxH  
* @version 1.0 ncb?iJ/b^  
*/ 0`"]mYH  
public class SortUtil { ?'CIt5n+\{  
public final static int INSERT = 1; [%YA42_`LD  
public final static int BUBBLE = 2; gC;y>YGP  
public final static int SELECTION = 3; ;5=J'8f  
public final static int SHELL = 4; 3m#v|52oj  
public final static int QUICK = 5; K6@QZc5.!  
public final static int IMPROVED_QUICK = 6; I8gGP'  
public final static int MERGE = 7; D#x D-c  
public final static int IMPROVED_MERGE = 8; s6OnHX\it7  
public final static int HEAP = 9; G5ebb6[+  
~Lhq7;=H?O  
public static void sort(int[] data) { p&B98c  
sort(data, IMPROVED_QUICK); hdW",Bf'  
} dc5w_98o  
private static String[] name={ n*CH,fih:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Y"D'|i  
}; _xI'p6C  
T2Z;)e$m_  
private static Sort[] impl=new Sort[]{ ?}m/Q"!1  
new InsertSort(), <oI{:KH  
new BubbleSort(), _Z.lr\  
new SelectionSort(), C&bw1`XJf  
new ShellSort(), ~KD x  
new QuickSort(), ^6#FqK+{u  
new ImprovedQuickSort(), dI5Z*"`R9  
new MergeSort(), ,]i ^/fT  
new ImprovedMergeSort(), '$ ~.x|  
new HeapSort() jRm:9`.Q  
}; P_j ?V"i<  
S6h=} V )  
public static String toString(int algorithm){ =2s 5>Oz+  
return name[algorithm-1]; ~7Kqc\/H&I  
} j,80EhZ  
P.gk'\<k  
public static void sort(int[] data, int algorithm) { /4YXx|V  
impl[algorithm-1].sort(data); |0U"#xkf  
} |Pz-  
8U/q3@EC  
public static interface Sort { @4B+<,i   
public void sort(int[] data); 2" ~!Pu^.j  
} 7fLLV2  
?t'ZX~k  
public static void swap(int[] data, int i, int j) { FviLlly6  
int temp = data; xH; qJRHa  
data = data[j]; LU_@8i:  
data[j] = temp; L5(rP\B  
} 6i( V+  
} W'E!5T^  
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