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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。 *oLAO/)n  
插入排序: "4N%I  
gIv :<EJ9  
package org.rut.util.algorithm.support; [v$_BS#u^3  
Am=D kkP%  
import org.rut.util.algorithm.SortUtil;  hM   
/** 5m2(7FC%su  
* @author treeroot WK5~"aw  
* @since 2006-2-2 6kH47Yc?  
* @version 1.0 F?=(4Pyvu  
*/ UBoN}iR  
public class InsertSort implements SortUtil.Sort{ $r%m<Uc;}O  
'~i;g.n=}-  
/* (non-Javadoc) Zj;2>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (3z: ;  
*/ IgH[xwzy[  
public void sort(int[] data) { It,m %5 Py  
int temp; JJJlgr]#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g;)xf?A9q  
} - Z?rx5V;t  
} ldcYw@KQ  
} }}Ah-QU  
seWYY $$  
} Pe@M_ r  
NQefrof  
冒泡排序: `F<)6fk  
]UyIp`nV;  
package org.rut.util.algorithm.support; Qo+_:N  
pjr,X+6o  
import org.rut.util.algorithm.SortUtil; yP2[!vYw  
%m[ :},  
/** J0xOB;rd  
* @author treeroot _urv We  
* @since 2006-2-2 ]Cy1yAv={  
* @version 1.0 ;8m_[gfw  
*/ ypE cjVP D  
public class BubbleSort implements SortUtil.Sort{ AkdONKO8{  
Ijq',@jE  
/* (non-Javadoc) H|>dF)%pj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q)R&npP7  
*/ `[\*1GpAo  
public void sort(int[] data) { NyU~8?bp  
int temp; hPtSY'_@_  
for(int i=0;i for(int j=data.length-1;j>i;j--){ xXQ#?::m  
if(data[j] SortUtil.swap(data,j,j-1); Q: ?]:i/*  
} \M^L'Mkj  
} wWm 1G)  
} \[&`PD  
} 3XY;g{`=q  
n,sl|hv2U  
} )qs>Z?7  
X~XpX7d!  
选择排序:  4"72  
*=i|E7Irg  
package org.rut.util.algorithm.support; 7M#2Tze}  
5`,qKJ  
import org.rut.util.algorithm.SortUtil; I12WOL q  
P6w!r>?6N  
/** ?,e7v.b  
* @author treeroot c"R`7P  
* @since 2006-2-2 eaP,MkK&  
* @version 1.0 Bv,u kQ\CH  
*/ _ +Ww1 f  
public class SelectionSort implements SortUtil.Sort { ,[enGw  
[O*5\&6  
/* \(Z'@5vC  
* (non-Javadoc) "o&_tB;O  
* xsS/)R?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *njdqr2c~  
*/ ,lSt}Lml  
public void sort(int[] data) { QCkPua9  
int temp; [/ uqH  
for (int i = 0; i < data.length; i++) { b0PqP<{t  
int lowIndex = i; tcOgF:  
for (int j = data.length - 1; j > i; j--) { F VW&&ft  
if (data[j] < data[lowIndex]) { Unev[!  
lowIndex = j; aRg/oA4}  
} 2ILMf?}  
} vum6O 3  
SortUtil.swap(data,i,lowIndex); xZAc~~9tD  
} L?!*HS7 m  
} Fy^*@&  
x,YC/J  
} A-<\?13uW  
CuRYtY@9  
Shell排序: r@L19d)J  
Q?Vq/3K;  
package org.rut.util.algorithm.support; +')\,m "z  
Sz4YP l  
import org.rut.util.algorithm.SortUtil; )70-q yA  
#JVw`=P  
/** fiA_6  
* @author treeroot :-HVK^$%  
* @since 2006-2-2 s.z(1MB]  
* @version 1.0 <a%9d<@m  
*/ v <1d3G=G  
public class ShellSort implements SortUtil.Sort{ bqpy@WiI S  
x zmg'Br  
/* (non-Javadoc) eqD|3YX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -g8G47piX:  
*/ K!^x+B|  
public void sort(int[] data) { $%!'c# F  
for(int i=data.length/2;i>2;i/=2){ -'btKz*9  
for(int j=0;j insertSort(data,j,i); $p@V1"x  
} } MBxfZ4I  
} dc UaZfON  
insertSort(data,0,1); W/COrgbW  
} LwIl2u*  
?)<DEu:Y  
/** ^(7<L<H  
* @param data @ht= (Jk9  
* @param j Gs]m; "o|  
* @param i t.|b285e  
*/ M.|O+K z  
private void insertSort(int[] data, int start, int inc) { 71`)@y,Z,  
int temp; mX))*e4k  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #DjSS.iW  
} M qq/k J  
} ~bU!4P}4j  
} csP 5R3  
?m5@ 63 5  
} 2(V;OWY(@  
e1a8>>bcI  
快速排序: kGm-jh  
v|Y:'5`V  
package org.rut.util.algorithm.support; guJS;VC6U  
"w}}q>P+sA  
import org.rut.util.algorithm.SortUtil; ?pq#|PI)  
^PDz"L<*  
/** RGd@3OjN  
* @author treeroot aOZSX3;wg  
* @since 2006-2-2 {RFpTh7f:  
* @version 1.0 %5<uQc9  
*/ AA[(rw  
public class QuickSort implements SortUtil.Sort{ gZbC[L  
apsR26\^  
/* (non-Javadoc) G3O`r8oZcJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gs^hqT;h  
*/ R7%' v Zk  
public void sort(int[] data) { %Wy$m?gD  
quickSort(data,0,data.length-1); Cx(|ZD^  
} " %$jl0i_c  
private void quickSort(int[] data,int i,int j){ B3 fKb#T  
int pivotIndex=(i+j)/2; Q;A1&UA2  
file://swap =+24jHs  
SortUtil.swap(data,pivotIndex,j); +>BLox6  
ph*9,\c8  
int k=partition(data,i-1,j,data[j]); akg$vHhK4  
SortUtil.swap(data,k,j); 4cC  
if((k-i)>1) quickSort(data,i,k-1); KLVkPix;$  
if((j-k)>1) quickSort(data,k+1,j); R5PXX&Q  
t[$C r;  
} $80 TRB#  
/** 8w-2Q  
* @param data c:QZ(8d]L  
* @param i i*-[-hn-V  
* @param j La&?0PA  
* @return I =G3  
*/ >2Z0XEe  
private int partition(int[] data, int l, int r,int pivot) { Mrpz(})  
do{ N<&"_jzm  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >fG=(1"  
SortUtil.swap(data,l,r); -3-*T)  
} h"h3SD~  
while(l SortUtil.swap(data,l,r); B",5"'id  
return l; 9 t)A_}O  
} 88%7  
37C'knW  
} 2>%|PQ  
?\|QDJXY  
改进后的快速排序: ZBw]H'sT  
kg0X2^#b  
package org.rut.util.algorithm.support; @)[Q6w`x  
RsTz3]`yv  
import org.rut.util.algorithm.SortUtil; 9g %1^$R  
]Rah,4?9f  
/** bYs K|n  
* @author treeroot aU&p7y4C@  
* @since 2006-2-2 +fh@m h0[  
* @version 1.0 L'1!vu *Rg  
*/ s2SxMFDP  
public class ImprovedQuickSort implements SortUtil.Sort { q [}<LU  
%H)^k${  
private static int MAX_STACK_SIZE=4096; `6bIxb{  
private static int THRESHOLD=10; awYnlE/Z1  
/* (non-Javadoc) _p;>]0cc.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L!:8yJK  
*/ {J#SpG 7  
public void sort(int[] data) { 0j{Rsy   
int[] stack=new int[MAX_STACK_SIZE]; =K#5I<x  
Ka\h a  
int top=-1; (<bYoWrK#  
int pivot; v)+E!"R3.  
int pivotIndex,l,r; jh7-Fl`  
I8ZBs0sfF{  
stack[++top]=0; zG IxmJ.  
stack[++top]=data.length-1; NUSb7<s,&Y  
RCZ"BxleU  
while(top>0){ >* Ag0.Az  
int j=stack[top--]; !U 6q;' )-  
int i=stack[top--]; f\p#3IwwH  
l\f /(&,  
pivotIndex=(i+j)/2; R y47Fze  
pivot=data[pivotIndex]; xxnvz  
Jcy{ ~>@7  
SortUtil.swap(data,pivotIndex,j); G5MoIC  
6 &8uLM(z  
file://partition g&E3Wc  
l=i-1; I 68Y4s  
r=j; hQWo ]WF(J  
do{ Mz59ac  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); azK7kM~  
SortUtil.swap(data,l,r); ?nf!s J'm  
} =6.4  
while(l SortUtil.swap(data,l,r); /)+V(Jlu  
SortUtil.swap(data,l,j); T`ofj7$:  
ww? AGd  
if((l-i)>THRESHOLD){ j\hI, mc  
stack[++top]=i; d76nyQKK  
stack[++top]=l-1; a:v5(@8  
} LE@<)}Au^  
if((j-l)>THRESHOLD){ QUQw/  
stack[++top]=l+1; Am'%tw ~  
stack[++top]=j; M6nQ17\{  
} `[)!4Jb  
_^%DfMP3i\  
} -- >q=hlA  
file://new InsertSort().sort(data); T]_]{%z  
insertSort(data); "26=@Q^Y  
} R$|"eb5  
/** 5&C:&=Y  
* @param data m%ec=%L9  
*/ !B*l'OJw  
private void insertSort(int[] data) { +nAbcBJAl  
int temp; o;kxu(>yL'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i!<1&{  
} !VDNqW  
} -P6Z[ V%  
} -){aBMOv3  
J@}PBHK+  
} 0 s$;3qE  
<u_ vL WS  
归并排序: TSKT6_IJw  
d ug^oc1  
package org.rut.util.algorithm.support; 5+DId7d'n  
]&;K:#J  
import org.rut.util.algorithm.SortUtil; ?-v]+<$Y  
=w5]o@  
/** P Dgd'y  
* @author treeroot '.B5CQ  
* @since 2006-2-2 fxQ4kiI  
* @version 1.0 `GUGy.b  
*/ "Snt~:W>  
public class MergeSort implements SortUtil.Sort{ GBY-WN4sc[  
x DiGN Jc  
/* (non-Javadoc) le|Rhs%Z%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \\ZCi`O  
*/ ]N;\AXZ7  
public void sort(int[] data) { gyz_$T@x  
int[] temp=new int[data.length]; X,A]<$ACu%  
mergeSort(data,temp,0,data.length-1); ]x(cX&S-9  
} /lS5B6NU  
}'p"q )  
private void mergeSort(int[] data,int[] temp,int l,int r){ }&LVD$Bz  
int mid=(l+r)/2; R>D[I.  
if(l==r) return ; R wTzS;  
mergeSort(data,temp,l,mid); <kCOg8<y :  
mergeSort(data,temp,mid+1,r); @P )2ZGG  
for(int i=l;i<=r;i++){ Di"Tv<RlQ  
temp=data; koa-sy)#L  
} yz<$?Gblz  
int i1=l; =5;tB  
int i2=mid+1; =E w<s5C@  
for(int cur=l;cur<=r;cur++){ Qv W vS9]  
if(i1==mid+1) ";U#aK1p  
data[cur]=temp[i2++]; o- v#Zl  
else if(i2>r) X> T_Xc  
data[cur]=temp[i1++]; `iN H`:[w  
else if(temp[i1] data[cur]=temp[i1++]; lyD=n  
else U#G<cV79  
data[cur]=temp[i2++]; 2!_DkE  
} .TM. v5B  
} 2Krh&  
SE$~Wbj?  
} /.WIED}>  
az1#:Go  
改进后的归并排序: K (,MtY*  
_Ie?{5$ng`  
package org.rut.util.algorithm.support; qi*Dd[OG  
&n'@L9v81  
import org.rut.util.algorithm.SortUtil; IhHKRb[  
RT. %\)))  
/** V!Pe%.>  
* @author treeroot @u @,Edh  
* @since 2006-2-2 u]*f^/6Q  
* @version 1.0 l@0${&n  
*/ Vq599M:)V  
public class ImprovedMergeSort implements SortUtil.Sort { M`&78j  
;4QE.&s`  
private static final int THRESHOLD = 10; `\r <3?  
&`IJ55Z-)  
/* `x`zv1U  
* (non-Javadoc) .lAPlJOO  
* ;efF]")  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xpJ=yxO  
*/ m al?3*x/  
public void sort(int[] data) { I|l5e2j  
int[] temp=new int[data.length]; 9vP#/ -g  
mergeSort(data,temp,0,data.length-1); '=`af>Nc  
} -(},%!-_  
;$67GK  
private void mergeSort(int[] data, int[] temp, int l, int r) { AqAL)`#K  
int i, j, k; h0 Xc=nj  
int mid = (l + r) / 2; ? q_%  
if (l == r) A%cJ5dF8~  
return; UX'q64F!  
if ((mid - l) >= THRESHOLD) ?_B'#,tI  
mergeSort(data, temp, l, mid); Zu*7t<W  
else G{!(2D4!  
insertSort(data, l, mid - l + 1); 4F"%X &$  
if ((r - mid) > THRESHOLD) C/4r3A/u  
mergeSort(data, temp, mid + 1, r);  }}Zg/(  
else vq+4so )/S  
insertSort(data, mid + 1, r - mid); 2Ab`i!#  
z(u,$vZ _  
for (i = l; i <= mid; i++) { r>}z|I'  
temp = data; 5,pEJ>dDD3  
} pD!j#suMA  
for (j = 1; j <= r - mid; j++) { <=Saf.  
temp[r - j + 1] = data[j + mid]; 'jXJ!GFw  
} Z2 Vri  
int a = temp[l]; `An p;el  
int b = temp[r]; !+z&] S3s  
for (i = l, j = r, k = l; k <= r; k++) { D~FIv  
if (a < b) { Y>T<Qn^D  
data[k] = temp[i++]; ::_bEmk  
a = temp;  ^Kl*}  
} else { j/jFS]iC  
data[k] = temp[j--]; P:WxhO/  
b = temp[j]; 9^8_^F  
} C[';B)a  
} ,vo]WIQ\:  
} bk1.H@8  
,rjl|F* T  
/** 2*< PmKI  
* @param data iaJLIrl  
* @param l E5 #ff5  
* @param i \<hHZS  
*/ +4p=a [  
private void insertSort(int[] data, int start, int len) { ,|Gjr T{vf  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4s9.")G  
} If]rg+|U  
} /'zXb_R,$  
} "sIww  
} wwet90_g  
gi>W&6  
堆排序: 0e07pF/!  
M?=I{}!@Q  
package org.rut.util.algorithm.support; H]W'mm  
6b%IPbb  
import org.rut.util.algorithm.SortUtil; ?LJiFG]^m  
x+TdTe;p  
/** da~_(giD*  
* @author treeroot G^cMY$?99  
* @since 2006-2-2 /;T tMQt  
* @version 1.0 m?gGFxo  
*/ YS@T Q?  
public class HeapSort implements SortUtil.Sort{ *Z\AO'h=Z  
$ce*W 9`  
/* (non-Javadoc) Ly/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0176  
*/ @FZ_[CYg  
public void sort(int[] data) { ~N/a\%`  
MaxHeap h=new MaxHeap(); t&p I  
h.init(data); XwfR/4  
for(int i=0;i h.remove(); AyW=.  
System.arraycopy(h.queue,1,data,0,data.length); |#{ i7>2U  
} ;>/yY]F7  
XZS%az1%  
private static class MaxHeap{ K2\)9  
ujl ?!  
void init(int[] data){ vRn]u57O  
this.queue=new int[data.length+1]; M]M>z>1*v  
for(int i=0;i queue[++size]=data; y\4/M6  
fixUp(size); +]( #!}oH  
} W9oWj7&h  
} Sb?Ua*(L:  
K'/if5>Bc  
private int size=0; $BT[fJ'k  
GIT"J}b}  
private int[] queue; HO_(it \  
?Q$a@)x#  
public int get() { o~W,VhCP  
return queue[1]; GY %$7   
} @4Zkkjc4b  
H|7XfM  
public void remove() { *_d N9  
SortUtil.swap(queue,1,size--); x4MTE?hT  
fixDown(1); 4<vi@,s  
} I(WIT=Wi<  
file://fixdown Y@< j vH1  
private void fixDown(int k) { =}@1Z~  
int j; %!AzFL J|Z  
while ((j = k << 1) <= size) { Vugb;5Vl  
if (j < size %26amp;%26amp; queue[j] j++; #qUGc`  
if (queue[k]>queue[j]) file://不用交换 uix/O*^  
break; kma>'P`G  
SortUtil.swap(queue,j,k); ,L.V>Ae  
k = j; )pe17T1|  
} xX9snSGz  
} dz>Jl},`k  
private void fixUp(int k) { ?RIf0;G  
while (k > 1) { h@'CmIZc  
int j = k >> 1; 34[TM3L].  
if (queue[j]>queue[k]) *-(o. !#1  
break; >]%$lSCW\D  
SortUtil.swap(queue,j,k); @H3x51PT(m  
k = j; kwqY~@W  
} ADVS}d!;]  
} k4!_(X%8  
V1GkX =H},  
} 4*9t:D|}  
s[dIWYs#  
} [k(b<'  
KF5r?|8 M  
SortUtil: @|sBnerE  
,!LY:pMK  
package org.rut.util.algorithm; $.:x3TsA  
}~NXiUe  
import org.rut.util.algorithm.support.BubbleSort; ^nNpT!o  
import org.rut.util.algorithm.support.HeapSort; I.(@#v7T  
import org.rut.util.algorithm.support.ImprovedMergeSort; 61_-G#W  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1c429&-  
import org.rut.util.algorithm.support.InsertSort; WRAL/  
import org.rut.util.algorithm.support.MergeSort; _%Ua8bR$  
import org.rut.util.algorithm.support.QuickSort; OB\ZT@l  
import org.rut.util.algorithm.support.SelectionSort; ]h&1|j1  
import org.rut.util.algorithm.support.ShellSort; 1 ?Zw  
kM1N4N7  
/** Cz$q"U  
* @author treeroot Lfdg5D5.P  
* @since 2006-2-2 ij~-  
* @version 1.0 CWRB/WH:  
*/  +Mhk<A[s  
public class SortUtil { %W2U$I5  
public final static int INSERT = 1; f [.'V1  
public final static int BUBBLE = 2; rlawH}1b  
public final static int SELECTION = 3; A%7f;&x!  
public final static int SHELL = 4; hW/Ve'x[  
public final static int QUICK = 5; (i1x<  
public final static int IMPROVED_QUICK = 6; WHOX<YJs  
public final static int MERGE = 7; Iz-mUD0;  
public final static int IMPROVED_MERGE = 8; Q<g>WNb  
public final static int HEAP = 9; /Hq  
'1xhP}'3)  
public static void sort(int[] data) { 7fO<=ei:  
sort(data, IMPROVED_QUICK); I"x~ 7  
} A>e-eD xi  
private static String[] name={ ,6pGKCUU:y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [^bq?w  
}; JR xY#k  
\=[j9'N>  
private static Sort[] impl=new Sort[]{ NP.i,H  
new InsertSort(), t+q;}ZvG  
new BubbleSort(), 0!KYi_3  
new SelectionSort(), MEJX5qG6m  
new ShellSort(), *RVCz|0%w  
new QuickSort(), *5*#Z~dut8  
new ImprovedQuickSort(), rFkZ'rp74b  
new MergeSort(), $pAVTz  
new ImprovedMergeSort(), L6i|5 P  
new HeapSort() k~K;r8D/  
}; S:`Gi>D  
0s H~yvM5  
public static String toString(int algorithm){ |HYST`  
return name[algorithm-1]; %6rSLBw3  
} %G,7Ul1f  
:) -`  
public static void sort(int[] data, int algorithm) { QG~6mvD  
impl[algorithm-1].sort(data); j}s/)}n|  
} .taP2^2Z  
d=8.cQL:E  
public static interface Sort {  :TR:tf  
public void sort(int[] data);  qsXkm4  
} <_Z.fdUA  
={ -kQq  
public static void swap(int[] data, int i, int j) { -sZ'<(3  
int temp = data; Fw{#4  
data = data[j]; dT% eq7=  
data[j] = temp; BBGub?(dR  
} +F60_O `  
} .boB b<  
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