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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。 JzQ)jdvp  
插入排序: |#]@Z)xa  
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package org.rut.util.algorithm.support; 0Ziw_S\d&s  
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import org.rut.util.algorithm.SortUtil; ;V*l.gr'2  
/** a,k>Q`  
* @author treeroot i3 @)W4{  
* @since 2006-2-2 ~a ]+#D  
* @version 1.0 x|pg"v&[  
*/ _({hc+9p  
public class InsertSort implements SortUtil.Sort{ Vf] "L .G  
A#EDk U,  
/* (non-Javadoc) t/VD31  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) onz?_SAW  
*/ sn obT Q  
public void sort(int[] data) { `4=^cyt+  
int temp; n*[XR`r}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;:\<gVi:  
} M l Jo`d  
} fF7bBE)L/|  
} `d5%.N  
1Q<^8N)pf  
} )u[emv$  
A kC1z73<  
冒泡排序: $4h5rC g0  
ywGd>@  
package org.rut.util.algorithm.support; J}v}~Cv  
\LR~r%(rM  
import org.rut.util.algorithm.SortUtil; &"&Z #llb  
kmP]SO?tx  
/** >=:&D)m"  
* @author treeroot ILEz;D{]   
* @since 2006-2-2 VVac:  
* @version 1.0 WW4vn|0v  
*/ v%+:/m1  
public class BubbleSort implements SortUtil.Sort{ Br1&8L-|%  
O}-jCW;K  
/* (non-Javadoc) zzTfYf)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e2s]{obf  
*/ HK,cJah q  
public void sort(int[] data) { }wr{W:j  
int temp; X' H[7 ^W  
for(int i=0;i for(int j=data.length-1;j>i;j--){ RJ  8+h  
if(data[j] SortUtil.swap(data,j,j-1); dCi?SIN  
} $'BSH4~|.  
} Pg,b-W?n*  
} dJJP3} M/  
} G_bG  
We$:&K0  
} n}F&1Z  
3!XjtVhK?I  
选择排序: $q6BP'7  
7K,-01-:  
package org.rut.util.algorithm.support; _x%7@ .TB  
y{ibO}s  
import org.rut.util.algorithm.SortUtil; ^1iSn)&  
~zCEpU|@N  
/** %7zuQ \w  
* @author treeroot _}lZ,L(w  
* @since 2006-2-2 qE&v ;  
* @version 1.0 YVQN&|-  
*/ PRu 6xsyA  
public class SelectionSort implements SortUtil.Sort { .7e2YI,S  
#hfXZVD  
/* \KMToN&2  
* (non-Javadoc) tItX y  
* [I '0,y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nw-xSS{  
*/ gw#5jW\  
public void sort(int[] data) { XewVcRo  
int temp; g7}Gip}.>  
for (int i = 0; i < data.length; i++) { t3*wjQ3  
int lowIndex = i; =mS\i663  
for (int j = data.length - 1; j > i; j--) { RDW8]=uM  
if (data[j] < data[lowIndex]) { )97SnCkal  
lowIndex = j; `eE&5.   
} Y-kt.X/Z-  
} X 0WJBEE  
SortUtil.swap(data,i,lowIndex); ;&< {ey  
} "?]{ %-u  
} LJd5;so-  
diJLZikk  
} c`J.Tm[_u  
<sWprR  
Shell排序: h1B? 8pD  
qaiNz S@q  
package org.rut.util.algorithm.support; &+Z,hs9%  
|L%Z,:yO  
import org.rut.util.algorithm.SortUtil; ?5C!<3gM)  
LPZF)@|`  
/** V=R 3)GC  
* @author treeroot P\yDa*m  
* @since 2006-2-2 {P*pk c  
* @version 1.0 \|H!~)h$1  
*/ %eX{WgH  
public class ShellSort implements SortUtil.Sort{ zMj#KA1  
'Y*E<6:  
/* (non-Javadoc) ',Y.v"']4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H5DC[bZMb%  
*/ Bc+w+  
public void sort(int[] data) { qaY1xPWz"  
for(int i=data.length/2;i>2;i/=2){ ve MH  
for(int j=0;j insertSort(data,j,i); /qMG=Z  
} "@%7-nu  
} v*'^r)Q[p  
insertSort(data,0,1); LxYrl-  
} }SX,^|eN  
?u{~>  
/** |v \_@09=  
* @param data /xsF90c\h  
* @param j .Zn^Nw3  
* @param i l==``  
*/ Z>QF#."m  
private void insertSort(int[] data, int start, int inc) { +AR5W(&  
int temp; ^N7e76VwR  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); AP68V  
} x.7]/)  
} ;XF:\<+  
} cJ{ Nh;"  
I;e=0!9U  
} \n$u)Xj~6^  
h]Wr [v  
快速排序: `b Fff %_  
I KqQ>Z-q~  
package org.rut.util.algorithm.support; H\h3 TdL  
$w)!3c4  
import org.rut.util.algorithm.SortUtil; J2::'Hw*s  
v4u5yy_;(  
/** u?4:H=;>  
* @author treeroot 2;z b\d  
* @since 2006-2-2 A0o-:n Fu  
* @version 1.0 SG6kud\b  
*/ GC>e26\:  
public class QuickSort implements SortUtil.Sort{ 2Z-ljD&  
!Y$h"<M  
/* (non-Javadoc) O~T@rX9f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k`So -e-  
*/ CLRiJ*U  
public void sort(int[] data) { k jg~n9#T  
quickSort(data,0,data.length-1); 48:>NW  
} wLi4G@jJ  
private void quickSort(int[] data,int i,int j){ 3jGWkby0  
int pivotIndex=(i+j)/2; Y'1S`.  
file://swap gbI^2=YT'  
SortUtil.swap(data,pivotIndex,j); mkYqpD7  
Sm)Ha:[4  
int k=partition(data,i-1,j,data[j]); hWM< 0=  
SortUtil.swap(data,k,j); ~ DBcIy?  
if((k-i)>1) quickSort(data,i,k-1); B|R@5mjm  
if((j-k)>1) quickSort(data,k+1,j); Sx708`/Ep  
]Y%Vio  
} JG" R\2  
/** ey2S#%DF]  
* @param data $CY~5A`l9  
* @param i @aAW*D~-J  
* @param j |%J{RA  
* @return -7*ET3NSI/  
*/ v/](yT  
private int partition(int[] data, int l, int r,int pivot) { [Yo,*,y31  
do{ brW :C? }  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d@ i}-;  
SortUtil.swap(data,l,r); ?\vh9  
} 'm4W}F  
while(l SortUtil.swap(data,l,r); )Hpa}FGT  
return l; Z)! qW?  
} G!"YpYml  
QIB\AAclO  
} ]QpWih00V  
87BHq)  
改进后的快速排序: tZ'|DCT  
wCr(D>iM  
package org.rut.util.algorithm.support; fuWO*  
A;*d}Xe&J  
import org.rut.util.algorithm.SortUtil; S#MZV@nGF  
PMN jn9d  
/** )CuZDf@  
* @author treeroot N):tOD@B  
* @since 2006-2-2  Of"  
* @version 1.0 %5eY'  
*/ 2>cGH7EBD  
public class ImprovedQuickSort implements SortUtil.Sort { 5 MN8D COF  
+?:7O=Y  
private static int MAX_STACK_SIZE=4096; z`!XhU  
private static int THRESHOLD=10; %K>,xiD)  
/* (non-Javadoc) V#XppYU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,{BaePMp  
*/ s!?`T1L  
public void sort(int[] data) { lBK}VU^  
int[] stack=new int[MAX_STACK_SIZE]; :[O 8  
()5[x.xK@  
int top=-1; ,quoRan  
int pivot; L;*ljZ^c  
int pivotIndex,l,r; |.F$G<  
\MbB#  
stack[++top]=0; eM$sv9?  
stack[++top]=data.length-1; >+JqA7K  
?\t#1"d  
while(top>0){ %/|9@er  
int j=stack[top--]; W+PJZn  
int i=stack[top--]; HkO7R `  
*VFf.aPwYi  
pivotIndex=(i+j)/2; h-G)o[MA  
pivot=data[pivotIndex]; _CmOd-y  
vbb 5f#WZ  
SortUtil.swap(data,pivotIndex,j); )2bvQy8K  
4x  
file://partition ~R22?g.  
l=i-1; 1DE1.1  
r=j; ;A]@4*q  
do{ {@+Ty]e  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Yzh"1|O  
SortUtil.swap(data,l,r); 0\[Chja  
} 2 lj'"nm  
while(l SortUtil.swap(data,l,r); MRb-H1+Xf  
SortUtil.swap(data,l,j); OR%'K2C6S  
U%<koD[,  
if((l-i)>THRESHOLD){ d/[; `ZD+  
stack[++top]=i; @6wFst\t  
stack[++top]=l-1; yzerOL  
} *M:B\ D  
if((j-l)>THRESHOLD){ n/SwP  
stack[++top]=l+1; F P* lQRA  
stack[++top]=j; %kS(LlL+6  
} )(ImLbM)  
Hea;?4Vg  
} N+Y]st+  
file://new InsertSort().sort(data); I aGq]z  
insertSort(data); LIcM3_.  
} lu<xv  
/** 0`X]o'RxS  
* @param data $, ,op(  
*/ Jtr"NS?a]  
private void insertSort(int[] data) { ~/98Id}v  
int temp; L3@82yPo!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /J=v]<87a  
} ~:Ll&29i  
} SKkUU^\#R`  
} Dp)=0<$y  
KwPOO{4]g  
} B"!l2  
a-=8xs'  
归并排序: ^pQCNKLBY  
@\f^0^G  
package org.rut.util.algorithm.support; S/9DtXQ  
,n3a gkPO>  
import org.rut.util.algorithm.SortUtil; 9%B\/&f  
0:9.;x9_  
/** @GdbTd  
* @author treeroot xlA$:M&  
* @since 2006-2-2 vUohtS*  
* @version 1.0 3Nq N \5B:  
*/ _*1`@  
public class MergeSort implements SortUtil.Sort{ L)@?e?9  
M<kj_.  
/* (non-Javadoc) B56L1^ 7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !,6c ~ w  
*/ ~N<4L>y<  
public void sort(int[] data) { z([ v%zf  
int[] temp=new int[data.length]; 7f0lQ  
mergeSort(data,temp,0,data.length-1); K`u(/kz/<  
} `HZ;NRr  
|}(`kW  
private void mergeSort(int[] data,int[] temp,int l,int r){ FaDjLo2'o  
int mid=(l+r)/2; mP0yk|  
if(l==r) return ; m^ tFi7c  
mergeSort(data,temp,l,mid); y:~ZLTAv  
mergeSort(data,temp,mid+1,r); C|}iCB  
for(int i=l;i<=r;i++){ -o $QS,  
temp=data; `f*Q$Ulqx  
} Q9Kve3u-i  
int i1=l; mi,E-  
int i2=mid+1; tjdaaN#,V  
for(int cur=l;cur<=r;cur++){ kXi6lh  
if(i1==mid+1) B?'#4J  
data[cur]=temp[i2++]; =;2%a(  
else if(i2>r) MP_ ~<Q  
data[cur]=temp[i1++]; ;C3US)j  
else if(temp[i1] data[cur]=temp[i1++]; VGpWg rmHk  
else - jb0o/:  
data[cur]=temp[i2++]; i} .&0Fp  
} lT&eJO~?5  
} uRZZxZ  
_kU:Z  
} o<COm9)i  
0K`#>}W#X  
改进后的归并排序: y5?RVlKJ  
G9xmmc  
package org.rut.util.algorithm.support; :6vm+5!  
4^WpS/#4  
import org.rut.util.algorithm.SortUtil; E\as@pqo\p  
mOy^vMa  
/** ^c^#dpn  
* @author treeroot Fcd3H$Na;  
* @since 2006-2-2 ST:A<Da"  
* @version 1.0 IC1NKn<k  
*/  @~!wDDS  
public class ImprovedMergeSort implements SortUtil.Sort { 8FKXSqhVM  
zgNc4B  
private static final int THRESHOLD = 10; zNxW'?0Z?  
'98VYCL  
/* kEOS{C%6R  
* (non-Javadoc) "B3N* R(["  
* JBE!j-F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M>~Drul  
*/ `$,GzS(  
public void sort(int[] data) { y9q8i(E0  
int[] temp=new int[data.length]; [d(U38BI  
mergeSort(data,temp,0,data.length-1); nbm&wa[  
} 1FlX'[vh  
8ZM&(Lz7u  
private void mergeSort(int[] data, int[] temp, int l, int r) { *K|W /'_&  
int i, j, k; pA9+Cr!0Q  
int mid = (l + r) / 2; &7PG.Ff!r  
if (l == r) nExU#/*~^  
return; wO'T BP  
if ((mid - l) >= THRESHOLD) YG@t5j#b  
mergeSort(data, temp, l, mid); w<Wf?aG  
else YG3J$_?y0  
insertSort(data, l, mid - l + 1); Cs9.&Y  
if ((r - mid) > THRESHOLD) 8u6:=fxb  
mergeSort(data, temp, mid + 1, r); VH9dleZ  
else /{+y2.{j  
insertSort(data, mid + 1, r - mid); mRL"nC  
LhOa{1SY  
for (i = l; i <= mid; i++) { M+U9R@  
temp = data; [@J/eWB  
} X-6de>=   
for (j = 1; j <= r - mid; j++) { nuk*.Su  
temp[r - j + 1] = data[j + mid]; '*5i)^  
} 4]?<hH9  
int a = temp[l]; a%kQl^I4  
int b = temp[r]; gp>3I!bo[K  
for (i = l, j = r, k = l; k <= r; k++) { g)#W>.Asd  
if (a < b) { d:BG#\e]v  
data[k] = temp[i++]; Yw^m  
a = temp; wSa)*]%  
} else { &dM. d!  
data[k] = temp[j--]; 41`n1:-]  
b = temp[j]; R=gb'  
} lR )67a  
}  .E`\MtA  
} |bTPtrT8  
G`cHCP_n  
/** ZrPbl "`7  
* @param data j[`j9mM8  
* @param l n^Hm;BiE#  
* @param i NQBpX  
*/ s}w{:Hk,x8  
private void insertSort(int[] data, int start, int len) { h2Ld[xvCu%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )J2mM  
} }>>1<P<8-  
} 'u*D A|HC  
} ,:%CB"J  
} [pbo4e,4O  
PVe xa|aaX  
堆排序: @.$|w>>T  
1eS&&J5  
package org.rut.util.algorithm.support; IpYM;tYw&  
7m4ao K  
import org.rut.util.algorithm.SortUtil; '(U-(wTC'/  
&dqLP9 5  
/** EMY/~bQW  
* @author treeroot idLWe9gC  
* @since 2006-2-2 .nrMfl_  
* @version 1.0 q]T1dz?  
*/ z[b@ V  
public class HeapSort implements SortUtil.Sort{ s'!Cp=xQF"  
J1( 9QN[w  
/* (non-Javadoc) S0zD"T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^uKwB;@  
*/ |Luqoa  
public void sort(int[] data) { 3@kf@ Vf  
MaxHeap h=new MaxHeap(); +ieY:H[  
h.init(data); @:+8?qcP  
for(int i=0;i h.remove(); 6n,i0W  
System.arraycopy(h.queue,1,data,0,data.length); |:nn>E}ZA/  
} cz >V8  
/)YNs7gR  
private static class MaxHeap{ , ]bhyp  
:ci5r;^  
void init(int[] data){ \hTm)-FP  
this.queue=new int[data.length+1]; &5\iM^  
for(int i=0;i queue[++size]=data; dG@%jD)  
fixUp(size); %RTBV9LIXr  
} <^&ehy:7y  
} z06r6  
`F-/QX[:  
private int size=0; Oxm>c[R  
LhA*F[6$M  
private int[] queue; (up~[  
w mn+  
public int get() { %'b M){  
return queue[1]; /a{la8Ni  
} * aN  
um jt]Gu[  
public void remove() { }q_<_lQ  
SortUtil.swap(queue,1,size--); 2M.fLQ?  
fixDown(1); Ur9?Td'*>  
} D9<!mH  
file://fixdown N4v~;;@(  
private void fixDown(int k) { NSxoF3  
int j; PRx8I .  
while ((j = k << 1) <= size) { 2<i!{;u$qL  
if (j < size %26amp;%26amp; queue[j] j++; '=39+*6?  
if (queue[k]>queue[j]) file://不用交换 I@T8Iv=  
break; *w|:~g  
SortUtil.swap(queue,j,k); SEo'(-5  
k = j; tI`Q/a5@  
} BBaQ}{F8>2  
} APvDP?  
private void fixUp(int k) { W<bGDh  
while (k > 1) { @P#N2:jwj  
int j = k >> 1; w^Sz#_2  
if (queue[j]>queue[k]) CNih6R  
break; ( Z619w  
SortUtil.swap(queue,j,k); !=pn77`g >  
k = j; $|L Sx  
} ynq}76 H0k  
} N@2dA*T,  
,kiv>{  
} y`VyQWW  
IoxgjUa  
} I5`4Al  
L5Ebc#  
SortUtil: 0pK=o"^?@  
T5R-B=YWu  
package org.rut.util.algorithm; ;ic3).H  
|LRedD7n  
import org.rut.util.algorithm.support.BubbleSort; { d=^}-^   
import org.rut.util.algorithm.support.HeapSort; iJ-23_D  
import org.rut.util.algorithm.support.ImprovedMergeSort; #H)vK"hF  
import org.rut.util.algorithm.support.ImprovedQuickSort; 02f~En}>6  
import org.rut.util.algorithm.support.InsertSort; 4QH3fTv   
import org.rut.util.algorithm.support.MergeSort; !02`t4Zc-  
import org.rut.util.algorithm.support.QuickSort; ~Y`ldL  
import org.rut.util.algorithm.support.SelectionSort; ,`|3KE9  
import org.rut.util.algorithm.support.ShellSort; y<?kzt  
/sUYU (3  
/** Ghu#XJB?  
* @author treeroot h`]Iy  
* @since 2006-2-2 \RNNg  
* @version 1.0 ?ME6+Z\  
*/ [glLre^  
public class SortUtil { 35A|BD) q  
public final static int INSERT = 1; ?8I?'\F;  
public final static int BUBBLE = 2; zkt+7,vI  
public final static int SELECTION = 3; <->{  
public final static int SHELL = 4; $ZUdT  
public final static int QUICK = 5; 1 8|m)(W  
public final static int IMPROVED_QUICK = 6;  '<jyw   
public final static int MERGE = 7; u#Pa7_zBj]  
public final static int IMPROVED_MERGE = 8; /'Ass(=6  
public final static int HEAP = 9; 7TgOK   
\MsTB|Z  
public static void sort(int[] data) { Umz KY  
sort(data, IMPROVED_QUICK); <5-[{Q/2z  
} xmNB29#  
private static String[] name={ -Y1e8H ='  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z)e/ !~""]  
}; i/65v  
A^nvp!_  
private static Sort[] impl=new Sort[]{ SAH-p*.  
new InsertSort(), c-x,fS"&W  
new BubbleSort(), 61,;Uc\T  
new SelectionSort(), ?274uAO'  
new ShellSort(), ]jtK I4  
new QuickSort(), J}*,HT*  
new ImprovedQuickSort(), 8Ry3`ct  
new MergeSort(), &x=.$76  
new ImprovedMergeSort(), F<ZYh  
new HeapSort() =qoWCmg"&  
}; l\E%+?K+^  
",p;Sd  
public static String toString(int algorithm){ 0QB iC]9  
return name[algorithm-1]; 6|K5!2  
} d:_t-ZZo  
3YeG$^y"  
public static void sort(int[] data, int algorithm) { P!$Zx)T  
impl[algorithm-1].sort(data); o906/5M  
} bH-ub2@qO  
}HL]yDO  
public static interface Sort { 9"@\s$ OBk  
public void sort(int[] data); q YC;cKv  
} {i1| R"ta  
xVf| G_5$  
public static void swap(int[] data, int i, int j) { 6 +Sxr  
int temp = data; z F_M*8=  
data = data[j]; &LmJ!^#  
data[j] = temp; 4ae`pAu  
} ?# Mr  
} 8/DS:uM  
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