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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。 )BR6?C3  
插入排序: \'I->O]  
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package org.rut.util.algorithm.support; Ur`Ri?  
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import org.rut.util.algorithm.SortUtil; l][{ #>V  
/** [U_S u,  
* @author treeroot iX 0s4  
* @since 2006-2-2 : E `N0UA  
* @version 1.0 "V!y"yQ  
*/ "G\OKt'Z  
public class InsertSort implements SortUtil.Sort{ HCHZB*r[  
Fw!CssW  
/* (non-Javadoc) @}:}7R6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?[>+'6  
*/ wykk</eQ.i  
public void sort(int[] data) { -=aI!7*"$  
int temp; 1?\ #hemL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gz6BfHQG  
} 3dG[dYj  
} ^a~^$PUqI  
} y#HDJ=2  
\^9SuZ  
} ,6Ulj+l  
A+d&aE }3V  
冒泡排序: d&n&_>  
g3@Qn?(j!  
package org.rut.util.algorithm.support; ]*a3J45  
{7!WtH;-  
import org.rut.util.algorithm.SortUtil; )En*5-1  
h~rSM#7m  
/** ydOJ^Yty  
* @author treeroot j,")c'r&dD  
* @since 2006-2-2 .Cfi/  
* @version 1.0 n:cre}0.  
*/ SXn\k;F<  
public class BubbleSort implements SortUtil.Sort{ @l~zn%!X  
T0xU}  
/* (non-Javadoc) *C*n( the  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sqw^Hwy=!2  
*/ 5\Sm^t|Tx  
public void sort(int[] data) { yrO \\No#H  
int temp; eyK=F:GO  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3*9<JHu  
if(data[j] SortUtil.swap(data,j,j-1); :K{!@=o  
} e1ru#'z  
} >gqM|-uY  
} / $7E  
} ZW\}4q;[A  
JAM4 R_  
} Tl9KL%9  
m'&^\7;D  
选择排序: {?c `0C  
FZTBvdUYp  
package org.rut.util.algorithm.support; *I 7$\0Q  
dx{ZG'@aH  
import org.rut.util.algorithm.SortUtil; yD6lzuk{X  
S<"T:Y &  
/** _h1n]@ d5  
* @author treeroot N0EJHS,>e  
* @since 2006-2-2 C.M]~"e  
* @version 1.0 Y <;A989D  
*/ cTf/B=yMi  
public class SelectionSort implements SortUtil.Sort { 6|*em4  
gZQ,br*  
/* T\\Q!pY  
* (non-Javadoc) _<x4/".}B3  
* zb/w^~J_i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (orO=gST-/  
*/ X!r9  
public void sort(int[] data) { __jFSa`at  
int temp; ~Y^ UP  
for (int i = 0; i < data.length; i++) { L=zt\L  
int lowIndex = i; e >W}3H5w0  
for (int j = data.length - 1; j > i; j--) { l n}2   
if (data[j] < data[lowIndex]) { ^DZ(T+q,  
lowIndex = j; #?h#R5:0  
} ,<]X0;~oB  
} {bB;TO<b`  
SortUtil.swap(data,i,lowIndex); lTOO`g  
} 4#H~g @  
} m:@-]U@ 6  
TqURYnNd  
} rdd%"u+  
SenDJv00  
Shell排序: *gHGi(U(U  
=sVB.P  
package org.rut.util.algorithm.support; .<8kDyi m  
<=KtRE>$  
import org.rut.util.algorithm.SortUtil; 5N=QS1<$5  
?ysC7 ((  
/** mup<%@7m  
* @author treeroot NIn#  
* @since 2006-2-2  Qx,jUL#2  
* @version 1.0 Vm NCknG  
*/ ?`%7Y~  
public class ShellSort implements SortUtil.Sort{ ;  ntq%  
:BFecS&i5  
/* (non-Javadoc)  =lIG#{`Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r@;n \  
*/ @ %LrpD  
public void sort(int[] data) { 0_7A <   
for(int i=data.length/2;i>2;i/=2){ G?\\k[#,&  
for(int j=0;j insertSort(data,j,i); u*/.   
} B16,c9[  
} Y> }[c   
insertSort(data,0,1); x O`#a=  
} 0. _)X  
m4FT^ ^3yE  
/** % j4  
* @param data *^]Hqf(`  
* @param j \OMWE/qMy  
* @param i hVPSW# .d  
*/ uH'n.d"WG  
private void insertSort(int[] data, int start, int inc) { 6J3:[7k=&  
int temp; U#3Y3EdF<  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); gp Aqz Y  
} O=c^Ak   
} 8P8@i+[]W  
} FOz7W  
wGfU@!m  
} RtZK2  
uZ}=x3B  
快速排序: 4 \*!]5i  
8I o--Ew3  
package org.rut.util.algorithm.support;  [wS~.  
 XI+m  
import org.rut.util.algorithm.SortUtil; WJ)( *1  
cfn\De%.  
/** rv/O^aL`Y  
* @author treeroot 8 /3`rEW  
* @since 2006-2-2 RL =  
* @version 1.0 {%WQQs  
*/ 1an?/j,  
public class QuickSort implements SortUtil.Sort{ (<RZZ{m  
4c"x&x|  
/* (non-Javadoc) Z]H`s{3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rp*f)rJ  
*/ C^sHj5\(  
public void sort(int[] data) { c#l W ?  
quickSort(data,0,data.length-1); ")%)e;V3  
} 7aAT  
private void quickSort(int[] data,int i,int j){ 9H$$Og  
int pivotIndex=(i+j)/2; k"-2OT  
file://swap YcJZG|[  
SortUtil.swap(data,pivotIndex,j); |TCHPKN  
4{!7T  
int k=partition(data,i-1,j,data[j]); .GG6wL<$?  
SortUtil.swap(data,k,j); )m . KV5K!  
if((k-i)>1) quickSort(data,i,k-1); .qBL.b_`  
if((j-k)>1) quickSort(data,k+1,j); E .2b@  
y%* hHnGd  
} ~y@,d  
/** yQ5F'.m9e  
* @param data R0>GM`{  
* @param i 3N8RZt1.b  
* @param j 3<:(Eda}  
* @return 7g'jg7  
*/ 7GN>o@t  
private int partition(int[] data, int l, int r,int pivot) { .L;M-`^  
do{ y#%*aV}|B  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +:@lde]/p  
SortUtil.swap(data,l,r); GabY xYK  
} {9(#X]'  
while(l SortUtil.swap(data,l,r); pwq a/Yi  
return l; Oj6PmUK4  
} ;| (_;d  
tqdw y.  
} ~j}7Fre  
fQZ,kl  
改进后的快速排序: U Ke!zI  
N7/eF9  
package org.rut.util.algorithm.support; >hg?!jMjrr  
$LxfdSa  
import org.rut.util.algorithm.SortUtil; :Iy4 B+  
eBw6k09C+  
/** r*e<`Is  
* @author treeroot p#['CqP8  
* @since 2006-2-2 x'Uv;mGo  
* @version 1.0 zCOzBL/1q  
*/ ZbS* zKEW  
public class ImprovedQuickSort implements SortUtil.Sort { eUa2"=M  
E038p]M!  
private static int MAX_STACK_SIZE=4096; 9~AAdD  
private static int THRESHOLD=10; +4<Ij/}p  
/* (non-Javadoc) >Q159qZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J|vriI;  
*/ p-p]dV  
public void sort(int[] data) { !'E{D`A9  
int[] stack=new int[MAX_STACK_SIZE]; \\\%pBT7]\  
@qC](5|TQ  
int top=-1; }E?{M~"<  
int pivot; f@:.bp8VB8  
int pivotIndex,l,r; nq9|cS%-  
$:v!*0/  
stack[++top]=0; D;~c`G "f  
stack[++top]=data.length-1; _*(n2'2B  
Xbm\"g \  
while(top>0){ n2<#]2h  
int j=stack[top--]; FH"u9ygF  
int i=stack[top--]; OQ,KQ\  
5~AK+6Za  
pivotIndex=(i+j)/2; W<W5ih,#  
pivot=data[pivotIndex]; ;>#YOxPl  
>P@JiR<@\n  
SortUtil.swap(data,pivotIndex,j); mW_B|dM"  
.?C-J  
file://partition ^U[c:Rz  
l=i-1; ;cye 'E  
r=j; V(-=@UW  
do{ VR/*h%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fT:a{  
SortUtil.swap(data,l,r); 7hg)R @OC  
} Vh%=JL sK  
while(l SortUtil.swap(data,l,r); t%xD epFQ  
SortUtil.swap(data,l,j); F;I %9-R  
OPYl#3I  
if((l-i)>THRESHOLD){ G-vBJlt=t  
stack[++top]=i; q4'Vb  
stack[++top]=l-1; _[eAA4h  
} s]tBd !~  
if((j-l)>THRESHOLD){ !|SVRaS  
stack[++top]=l+1; R~=_,JUW  
stack[++top]=j; @k"Q e&BQ  
} m2j&v$  
Pz=x$aY  
} )QeXA )  
file://new InsertSort().sort(data); 9GH11B_A  
insertSort(data); ^xBF$ua37)  
} Kbdjd p  
/** }ZP;kM$g  
* @param data nE4?oq  
*/ @raw8w\Zj+  
private void insertSort(int[] data) { !uoQLiH+  
int temp; "s:eH"_s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &zGf`Zi6*%  
} Jp'XZ]o\  
} fR:BF47  
} 'dkKBLsx  
|zJxR_)  
} +{qX,  
t[L_n m5-  
归并排序: QA=G+1x  
f3g#(1  
package org.rut.util.algorithm.support; {iz,iv/U  
sHt PO[h  
import org.rut.util.algorithm.SortUtil; GT -(r+u  
R<5GG|(B  
/** ?PMF]ah  
* @author treeroot 1XwW4cZ>:  
* @since 2006-2-2 pl-2O $  
* @version 1.0 O%w"bEr)N  
*/ 7tEK&+H`  
public class MergeSort implements SortUtil.Sort{ .e^AS~4pl  
>z(AQ  
/* (non-Javadoc) yMJY6$Ct  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m|7lDfpb  
*/ ,b&-o?.{  
public void sort(int[] data) { xh7[{n[;  
int[] temp=new int[data.length]; d G}.T_l  
mergeSort(data,temp,0,data.length-1); [(hB%x_"  
} N33{vx  
86]})H  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]m>N!Iu  
int mid=(l+r)/2; zW,Nv>Ac5  
if(l==r) return ; @,Re<%\  
mergeSort(data,temp,l,mid); i8]2y  
mergeSort(data,temp,mid+1,r); X_j=u1*5  
for(int i=l;i<=r;i++){ X5(S+;v"^  
temp=data; #Cwzk{p(  
} !7m )QNV  
int i1=l; .7BB*!CP  
int i2=mid+1; =:|fN3nJ2  
for(int cur=l;cur<=r;cur++){ ylV.ZoY6  
if(i1==mid+1) ;}=4z^^5  
data[cur]=temp[i2++]; ndsu}:my  
else if(i2>r) U%Igj:%?;`  
data[cur]=temp[i1++]; H-*"%SJ  
else if(temp[i1] data[cur]=temp[i1++]; uv:DO6 {  
else ]<V,5'xh  
data[cur]=temp[i2++]; )2U#<v^  
} E^RPK{zO  
} !A.Kb74  
:s Mc}k?9S  
} -:5]*zVp+-  
q ;@:,^  
改进后的归并排序: 4z~%gt74O]  
7\BGeI  
package org.rut.util.algorithm.support; D^ E+#a 1  
\F|L y >g  
import org.rut.util.algorithm.SortUtil; ?z:Xdx\l  
 N+<`Er  
/** OT & mNE4  
* @author treeroot xaiA?  
* @since 2006-2-2 if S) < t  
* @version 1.0 Jb~nu  
*/ .] S{T  
public class ImprovedMergeSort implements SortUtil.Sort { UE3#(:x A  
P5:X7[  
private static final int THRESHOLD = 10; ,W'?F9Y\  
B{D!5{t  
/* ^:b%Q O  
* (non-Javadoc) n ..9F$a  
* c'9-SY1'~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1I#S?RSb  
*/ Iw ? M>'l  
public void sort(int[] data) { YWf w%p?n"  
int[] temp=new int[data.length]; u6~|].j R  
mergeSort(data,temp,0,data.length-1); nUZ+N)*  
} uW.)(l  
c8o $WyO  
private void mergeSort(int[] data, int[] temp, int l, int r) { K%Sy~6iD&  
int i, j, k; $X.X_  
int mid = (l + r) / 2; Unl6?_  
if (l == r) jLULf+ 8&  
return; zU+` o?al  
if ((mid - l) >= THRESHOLD) KcGM=z?:  
mergeSort(data, temp, l, mid); fbbk;Rq.'3  
else #&Zb8HAj  
insertSort(data, l, mid - l + 1);  oQrkd:  
if ((r - mid) > THRESHOLD) 9d7$Fz#  
mergeSort(data, temp, mid + 1, r); ^-CQ9r*  
else s W#}QYd  
insertSort(data, mid + 1, r - mid); Bn7~p+N  
!MOgM  
for (i = l; i <= mid; i++) { >L#HE  
temp = data; p^G:h6|+|  
} =YPvh]][  
for (j = 1; j <= r - mid; j++) { y<|vcg8x  
temp[r - j + 1] = data[j + mid]; UB3b  
} LL~bq(b  
int a = temp[l]; uvo2W!  
int b = temp[r]; 3{mu7 7  
for (i = l, j = r, k = l; k <= r; k++) { e1e2Wk  
if (a < b) { J%?'Q{  
data[k] = temp[i++]; Z4\$h1tl  
a = temp; _)q,:g~fu  
} else { \W<r`t4v  
data[k] = temp[j--]; +U(m b  
b = temp[j]; *D: wwJ  
} *@'\4OO  
} *QzoBpO<  
} VP4W~;UV|\  
b"+ J8W  
/** ^L&hwXAO:  
* @param data ;cBFft}D  
* @param l %N!2 _uk5  
* @param i 7` ^]:t  
*/ `I.Uw$,P  
private void insertSort(int[] data, int start, int len) { kRBPl9 9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); mlgw0   
} K0xZZ`  
} O!!Ne'I  
} K!q:A+]  
} gi;#?gps  
lY5a=mwHU  
堆排序: I!y[7^R  
&lYZ=|6  
package org.rut.util.algorithm.support; g;U f?  
56Q9RU(M  
import org.rut.util.algorithm.SortUtil; 2}P<}-?6  
NGHzifaE   
/** \2!v~&S  
* @author treeroot Gc) Zu`67  
* @since 2006-2-2 Z6<vLc  
* @version 1.0 i"uAT$xe  
*/ 0z g\thL  
public class HeapSort implements SortUtil.Sort{ CB5 ~!nKv&  
T,h,)|:I^  
/* (non-Javadoc) ZbJUOa?WF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y%CaaK=V3  
*/ iP1u u  
public void sort(int[] data) { 'J^E|1P  
MaxHeap h=new MaxHeap(); jV^Dj  
h.init(data); ".z~c%'  
for(int i=0;i h.remove(); UOrf wK  
System.arraycopy(h.queue,1,data,0,data.length); ' vO+,-  
} ;|v6^2H"  
8H_3.MK  
private static class MaxHeap{ }}v04~  
2U6j?MyH2  
void init(int[] data){ U$KdY _Z97  
this.queue=new int[data.length+1]; vVF#]t b|  
for(int i=0;i queue[++size]=data; i]Or'L0c  
fixUp(size); 9V&%_.Z  
} NfcQB;0  
} $smzP.V  
e.eQZ5n~q`  
private int size=0; C !81Km5  
KYY~ YP  
private int[] queue; w U.K+4-k  
,D-VC{lj  
public int get() { 2~+Iu +  
return queue[1]; x,"'\=|s*  
} ;p%a!Im_ <  
XA{ tVh  
public void remove() { dX0A(6  
SortUtil.swap(queue,1,size--); 5EDM?G  
fixDown(1); 6C>x,kU  
} ni gp83:  
file://fixdown }2M2R}D  
private void fixDown(int k) { "(ehf|%>%  
int j; 93:s[b mx  
while ((j = k << 1) <= size) { w}pFa76rm  
if (j < size %26amp;%26amp; queue[j] j++; ['m@RJm+  
if (queue[k]>queue[j]) file://不用交换 4f~hd-z  
break; w5|az6wZB!  
SortUtil.swap(queue,j,k); u2'xM0nQ  
k = j; pLL ^R  
} BvpGP  
} `':$PUz,g  
private void fixUp(int k) { =!r9;L,?  
while (k > 1) { 2a2C z'G  
int j = k >> 1; 5B| iBS l  
if (queue[j]>queue[k]) R% XbO~{u  
break; cYdk,N  
SortUtil.swap(queue,j,k); .Vq-<c%  
k = j; o9~Z! &p  
} $Y][-8{t  
} DGdSu6s$  
[|V<e+>T/  
} vWI9ocl`W  
t)XNS!6#]?  
} pm O}m>  
[-_u{j  
SortUtil: IZeWswz  
? e%Pvy<i  
package org.rut.util.algorithm; $I!vQbi  
Ph2jj,K  
import org.rut.util.algorithm.support.BubbleSort; !0ySS {/  
import org.rut.util.algorithm.support.HeapSort; Z6SM7? d  
import org.rut.util.algorithm.support.ImprovedMergeSort; [2.uwn]i  
import org.rut.util.algorithm.support.ImprovedQuickSort; K=VYR Y  
import org.rut.util.algorithm.support.InsertSort; 5[[4A]#T  
import org.rut.util.algorithm.support.MergeSort; ~j",ePl  
import org.rut.util.algorithm.support.QuickSort; ?AX./LI  
import org.rut.util.algorithm.support.SelectionSort; L~SM#?z:ue  
import org.rut.util.algorithm.support.ShellSort; F)) +a&O  
>F6'^9|  
/** bl(rCbj(w  
* @author treeroot %7pT\8E5  
* @since 2006-2-2 =:mD)oX*  
* @version 1.0 _kl.zw%  
*/ >}GtmnF  
public class SortUtil { !6\{q M  
public final static int INSERT = 1; G%-[vk#]  
public final static int BUBBLE = 2; |2AK~t|t  
public final static int SELECTION = 3; B. 6gJ2c  
public final static int SHELL = 4; I/rq@27o  
public final static int QUICK = 5; 7qq}wR]]  
public final static int IMPROVED_QUICK = 6; O8TAc]B  
public final static int MERGE = 7; 1XU sr;Wz  
public final static int IMPROVED_MERGE = 8; 3|-)]^1O  
public final static int HEAP = 9; ])egke\!  
DG}t!  
public static void sort(int[] data) { y[oc^Zuo  
sort(data, IMPROVED_QUICK); Q3u P7j  
} +rfw)c'  
private static String[] name={ 5;oWFl  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h)7{Cj  
}; z{Z'2,#  
6%~ Z^>`N  
private static Sort[] impl=new Sort[]{ rR&;2  
new InsertSort(), eaCv8zdX  
new BubbleSort(), s6%%/|  
new SelectionSort(), 9lNO ~8  
new ShellSort(), g"c\ouSY  
new QuickSort(), A?<R9A  
new ImprovedQuickSort(), DXl3  
new MergeSort(), yt}Ve6  m  
new ImprovedMergeSort(), thIuK V{CO  
new HeapSort() zMxHJNQ\D  
}; d}j%. JJK  
kL\ FY  
public static String toString(int algorithm){ n|sP0,$N1  
return name[algorithm-1]; ET;YAa*  
} H WOs   
b1JXC=*@  
public static void sort(int[] data, int algorithm) { {D J!T  
impl[algorithm-1].sort(data); =v]\{ .  
} X|fl_4NC>  
q}p&<k  
public static interface Sort { |N/Grk4  
public void sort(int[] data); $ OB2ZS"  
} F9p'|-   
ad1I2  
public static void swap(int[] data, int i, int j) { ?-%Q[W  
int temp = data; I},.U&r  
data = data[j]; N^z4I,GV(  
data[j] = temp; 8 9o&KF]  
} 1Kszpt(Ld  
} zrVw l\&  
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