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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。 }2sc|K^  
插入排序: GHQa{@m2V  
t7VXW{3  
package org.rut.util.algorithm.support; N=) E$h  
LK8K=AA3P  
import org.rut.util.algorithm.SortUtil; 3r=IO#  
/** cmQLkT"#K  
* @author treeroot 9R XT  
* @since 2006-2-2 &i`\`6 q  
* @version 1.0 Dk#$PjcRE  
*/ H6<\7W89y  
public class InsertSort implements SortUtil.Sort{ uJ S+;H  
jW6~^>S  
/* (non-Javadoc) q#v&&]N=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~o:lh],~  
*/ ojO<sT:by  
public void sort(int[] data) { P |c6V  
int temp; A[lkGQtS4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .tB[8Y=J  
}  D7%`hU  
} S3-3pJ]~Zk  
} [YT"UVI  
C7%+1w'D8  
} +p =n-  
w'q}aQS  
冒泡排序: u</21fz'  
~ifo7,  
package org.rut.util.algorithm.support; UzVnC:  
P,Fs7  
import org.rut.util.algorithm.SortUtil; Aa* UV6(v  
M*)}F  
/** B7qm;(?X&  
* @author treeroot wi]|"\  
* @since 2006-2-2 |H&2[B"l  
* @version 1.0 g/+P]c6/  
*/ 8U B-(~  
public class BubbleSort implements SortUtil.Sort{ mDmy637_  
zBWn*A[4  
/* (non-Javadoc) ^ N]u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'xAfcP[^  
*/ clQN@1] M  
public void sort(int[] data) { 7O{c>@\  
int temp; /?l@7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ P@ '<OI  
if(data[j] SortUtil.swap(data,j,j-1); RE]u2R6Y  
} ,.u7([SGm  
} s OD>mc#%Y  
} _yT Gv-  
}  \p"`!n  
b_*Y5"(*  
} e:IUO1#  
=!_e(J  
选择排序: lz X0B&:  
%s~MfK.k  
package org.rut.util.algorithm.support; [3++Q-rR=  
ZK))91;v  
import org.rut.util.algorithm.SortUtil; wmFI?   
#5)E4"m  
/** 8>G3KZ3  
* @author treeroot bH+p5Fd;  
* @since 2006-2-2 > TG:}H(J  
* @version 1.0 HT/zcd)}#  
*/ ,Z*?"d  
public class SelectionSort implements SortUtil.Sort { f.0~HnNg1  
mM"!=' z  
/* `,ZsKxI  
* (non-Javadoc) M xUj7ae  
* n{j14b'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FbQ"ZTN\;Y  
*/ <#w0=W?  
public void sort(int[] data) { O3#4B!J$E  
int temp; [ aj F  
for (int i = 0; i < data.length; i++) { +_uT1PsBY  
int lowIndex = i; djV^A  
for (int j = data.length - 1; j > i; j--) { +\G/j]3f  
if (data[j] < data[lowIndex]) { uW!',"0ER  
lowIndex = j; P: &XtpP  
} xqv4gN6  
} siw } }}  
SortUtil.swap(data,i,lowIndex); > Zo_-,  
} ~}|)@,N'bm  
} $6 \v1  
zDY!0QZLF\  
} cYyv iR59#  
aS?A3h4WM_  
Shell排序: U<fe 'd  
s"`uE$6N  
package org.rut.util.algorithm.support; :.6kXX'~  
9vT@ mqKu  
import org.rut.util.algorithm.SortUtil; ^2OBc  
U/&!F  
/** xN0n0  
* @author treeroot &AH@|$!E  
* @since 2006-2-2 B*E:?4(<P  
* @version 1.0 ~p<o":k+Lv  
*/ &Cp)\`[y  
public class ShellSort implements SortUtil.Sort{ "ZF:}y  
! %r5  
/* (non-Javadoc) D1t@Y.vl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -:t<%]RfY  
*/ 0 } uEM_a  
public void sort(int[] data) { lN*O</L,"  
for(int i=data.length/2;i>2;i/=2){ hv te)  
for(int j=0;j insertSort(data,j,i); m/3b7c@r  
} B<(v\=xZ  
} `s(T (l  
insertSort(data,0,1); XHcT7}]  
} %qL0=ad  
.]g>.  
/** qQ[&FjTO`  
* @param data (1gfb*L  
* @param j sL]KBux  
* @param i '`=z52  
*/ J_]?.V*A  
private void insertSort(int[] data, int start, int inc) { ZP5.?A-=C  
int temp; v|`f8M2  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #>C.61Fx  
} SU9qF73Y  
} ENm\1  
}  M]:4X_  
>t')ZSjRs  
} :<f7;.  
fgYdKv8  
快速排序: '}4LHB;:  
@V:4tG.<sw  
package org.rut.util.algorithm.support; f.cIhZF  
4Mi~eL%D (  
import org.rut.util.algorithm.SortUtil; tKgPKWP   
vBAds  
/** rr>*_67-:  
* @author treeroot 0TK+R43_  
* @since 2006-2-2 2[: *0 DV#  
* @version 1.0 / 2>\Z(  
*/ znv2:  
public class QuickSort implements SortUtil.Sort{ IM),cOp=  
)?RR1P-ID  
/* (non-Javadoc) ) D:M_T2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (5rH 72g(  
*/ ;g$s`l/ 4  
public void sort(int[] data) { thcj_BZ8  
quickSort(data,0,data.length-1); YpMQY-n  
} &NiDv   
private void quickSort(int[] data,int i,int j){ Dz;^'   
int pivotIndex=(i+j)/2; VqV6)6   
file://swap '>-  C!\t  
SortUtil.swap(data,pivotIndex,j); ]+x;tP o  
^XEX"E  
int k=partition(data,i-1,j,data[j]); J(F]?H  
SortUtil.swap(data,k,j); w%;Z`Xn&u  
if((k-i)>1) quickSort(data,i,k-1); }@Lbv aa  
if((j-k)>1) quickSort(data,k+1,j); vUh.ev0  
*#{[9d  
} kb{h`  
/** ';4DUh p  
* @param data n_vopDMm  
* @param i VXlTA>a }  
* @param j bSsX)wHm  
* @return ;i?Ao:]  
*/ ?XO$ 9J  
private int partition(int[] data, int l, int r,int pivot) { z%5i^P  
do{ #?L%M  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :[P>e ox  
SortUtil.swap(data,l,r); MB;< F  
} m~ :W$x1+  
while(l SortUtil.swap(data,l,r); tep_g4CQR_  
return l; F M:ax{  
} ^;4nHH7z-,  
Ex^|[iV  
} (%]&Pe]  
QWG?^T fi  
改进后的快速排序: i~:FlW]  
W zYy<  
package org.rut.util.algorithm.support; ]etLobV  
v`#T)5gl-  
import org.rut.util.algorithm.SortUtil; z 3)pvX5  
(NrH)+)J!a  
/** IBm&a^  
* @author treeroot uSp=,2)  
* @since 2006-2-2 gK7j~.bb"  
* @version 1.0 N}Ozm6Mc  
*/ +~mBo+ ,  
public class ImprovedQuickSort implements SortUtil.Sort { l}B,SkP^  
e{@TR x  
private static int MAX_STACK_SIZE=4096; H~x,\|l#  
private static int THRESHOLD=10; qYZ\< h^  
/* (non-Javadoc) rSDS9Vf(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c-8Pc ]+g  
*/ !m(5N4:vV  
public void sort(int[] data) { S?*pCJ0  
int[] stack=new int[MAX_STACK_SIZE]; i)=!U>B_0  
?r C^@)  
int top=-1; jz(}P8  
int pivot; j.OPDe{LU  
int pivotIndex,l,r; Cc^`M9dP  
b$)b/=2  
stack[++top]=0; P<yd  
stack[++top]=data.length-1; \:ntqj&A|  
}TD$ !  
while(top>0){ 7Fb |~In<Z  
int j=stack[top--]; tn};[r  
int i=stack[top--]; W _(  
-~T?xs0_  
pivotIndex=(i+j)/2; fbp6lE  
pivot=data[pivotIndex]; y)_T!&ze  
Pda(O;aNU  
SortUtil.swap(data,pivotIndex,j); F3[3~r  
PW)XDo7  
file://partition I;kKY  
l=i-1; is_`UDaB  
r=j; f.rc~UI?  
do{ O.4ty)*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (m|w&oA/  
SortUtil.swap(data,l,r); SA s wP  
} H@Dj$U  
while(l SortUtil.swap(data,l,r); ;,GE!9HW  
SortUtil.swap(data,l,j); vB(tpki|  
eED Fm  
if((l-i)>THRESHOLD){ aV`4M VWOz  
stack[++top]=i; .lm^+1}r  
stack[++top]=l-1; _KVge)j  
} b6BeOR*ps  
if((j-l)>THRESHOLD){ F<y$Q0Z}  
stack[++top]=l+1; j2NnDz'  
stack[++top]=j; o =)hUr  
} P_)h8-!+ $  
Ftu~nh}  
} l?E7'OEF:  
file://new InsertSort().sort(data); (.Yt| "j  
insertSort(data); Dn;6O  
} 8;>vgD  
/** @+1-_Q`s/R  
* @param data M rpn^C2)  
*/ v7"' ^sZ?  
private void insertSort(int[] data) { qXO@FW]  
int temp; @WVpDhG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sLh9= Kh`  
} BhC.#u/   
} ++ !BSQ e  
} S;[g0j  
A9^t$Ii  
} ><9E^ k0.  
X=]FVHV;  
归并排序: )+T\LU  
'P(S*sr  
package org.rut.util.algorithm.support; 6c-y<J+&s  
F.ml]k&(m  
import org.rut.util.algorithm.SortUtil; =y.!Ny5A  
y)N57#e  
/** Kc~h  
* @author treeroot a& b75.-  
* @since 2006-2-2 z$OKn#%T  
* @version 1.0 hhQLld4  
*/ 6FuZMasr*  
public class MergeSort implements SortUtil.Sort{ N3 qtq9{  
dbF?#s~u  
/* (non-Javadoc) p<IMWe'tP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Om`VQ?  
*/ S(xlN 7=  
public void sort(int[] data) { Iqe=)   
int[] temp=new int[data.length]; Q$Y ]KV  
mergeSort(data,temp,0,data.length-1); ``bIqY  
} 9 A0wiKp  
)=6 |G^  
private void mergeSort(int[] data,int[] temp,int l,int r){ $OMTk  
int mid=(l+r)/2; P+00wbx0  
if(l==r) return ; 0 =#)-n  
mergeSort(data,temp,l,mid); h6c0BmS{1  
mergeSort(data,temp,mid+1,r); 1s5F jD?M  
for(int i=l;i<=r;i++){ lJHV c"*/  
temp=data; ^b)8l  
} hd*bPj ;  
int i1=l; Cisv**9  
int i2=mid+1; $oKT-G  
for(int cur=l;cur<=r;cur++){ 6}bUX_!&s  
if(i1==mid+1) b z3 &  
data[cur]=temp[i2++]; n<47#-  
else if(i2>r) Bu4J8eLx  
data[cur]=temp[i1++]; Eshc"U  
else if(temp[i1] data[cur]=temp[i1++]; T0Lh"_X3  
else Yg_;Eu0'?  
data[cur]=temp[i2++]; 04{*iS95J  
} p&'oJy.P  
} $|~YXH~O  
T;/Y/Fd  
} YU! SdT$  
ZZ/F}9!=  
改进后的归并排序: \ci'Cbn\o  
(3kz(6S  
package org.rut.util.algorithm.support; 3(D!]ku~m  
_ZUtQ49  
import org.rut.util.algorithm.SortUtil; owYf1=G  
+dd\_\  
/** 26n+v(re  
* @author treeroot VNKtJmt  
* @since 2006-2-2 @64PdM!L  
* @version 1.0 4LY kK/:  
*/ ~Y=v@] 2/  
public class ImprovedMergeSort implements SortUtil.Sort { *N5cC#5`=  
!Yuu~|  
private static final int THRESHOLD = 10; 7q_B`$ata  
n^Co  
/* 2xy &mNx  
* (non-Javadoc) q)S70M_1  
* x;d*?69f]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xD[O8vQE  
*/ nff X  
public void sort(int[] data) { Kgev*xg  
int[] temp=new int[data.length]; g *}M;"  
mergeSort(data,temp,0,data.length-1); Fy(-.S1  
} i U3GUsPy  
GF(<!PC  
private void mergeSort(int[] data, int[] temp, int l, int r) { AC*> f&  
int i, j, k; |ymw])L  
int mid = (l + r) / 2; k e$g[g  
if (l == r) b[}f]pB@n  
return; 'n1-?T)  
if ((mid - l) >= THRESHOLD) QkMK\Up  
mergeSort(data, temp, l, mid); 72J@Dc  
else Y`$dtg {  
insertSort(data, l, mid - l + 1); 3/+r*lv>X  
if ((r - mid) > THRESHOLD) qfF/X"#0  
mergeSort(data, temp, mid + 1, r); JBY`Y ]V3  
else \Km gFyF  
insertSort(data, mid + 1, r - mid); !ho~@sc{W  
,+`1/  
for (i = l; i <= mid; i++) { 3{wr*L1%-~  
temp = data; ySC;;k'  
} A6D.bJ)  
for (j = 1; j <= r - mid; j++) { _^{!`*S  
temp[r - j + 1] = data[j + mid]; L< 3U)Gp  
} 4x8e~/  
int a = temp[l]; 7S"W7O1>  
int b = temp[r]; {J_1.uN=  
for (i = l, j = r, k = l; k <= r; k++) { !YJfP@"e6r  
if (a < b) { =*K~U# uoC  
data[k] = temp[i++]; 3]Jl\<0  
a = temp; VXr'Z  
} else { j,@N0~D5  
data[k] = temp[j--]; []opPQ 1  
b = temp[j]; k [6%+  
} i-6,r[<  
} _ ," -25a  
} cE}y~2cH  
jkz .qo-%  
/** +C`h*%BW  
* @param data Grot3a  
* @param l gWlv;oq  
* @param i NI(fJ%U  
*/ 'FVh/};Y.D  
private void insertSort(int[] data, int start, int len) { aI8k:FK"  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ssdpwn'  
} JY$B%R4;]  
} rU^?Z  
} ARcPHV<(2  
} A\{dq:  
2?=R_&0 Q  
堆排序: 2=?/$A9p  
n%N|?!rB  
package org.rut.util.algorithm.support; tCkKJ)m  
Jxyeh1z qB  
import org.rut.util.algorithm.SortUtil; w QV4[  
Ww(($e!  
/** @|yRo8|  
* @author treeroot 8&q|*/2  
* @since 2006-2-2 2|J>e(&akY  
* @version 1.0 &hciv\YT2W  
*/ j2oHwt6"  
public class HeapSort implements SortUtil.Sort{ ?`& l Y  
M]\p9p(_  
/* (non-Javadoc) >FrF"u:kM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) al{;]>W  
*/ >MXE)=  
public void sort(int[] data) { h>s|MZQ:*  
MaxHeap h=new MaxHeap(); Q i&!Ub]  
h.init(data); j/I^\Ms  
for(int i=0;i h.remove(); *hJ&7w ~  
System.arraycopy(h.queue,1,data,0,data.length); l`#XB:#U  
} Kk?]z7s-4  
l)JNNcej  
private static class MaxHeap{ xR9<I:^&  
NF/@'QRT  
void init(int[] data){ -Oj}PGj$e\  
this.queue=new int[data.length+1]; #Y)Gos  
for(int i=0;i queue[++size]=data; sIx8,3`&y  
fixUp(size); 4';~@IBf  
} /CpU.^V  
} DA>_9o/l  
o6{[7jI  
private int size=0; Mi|PhDXMh  
>]6 inS9  
private int[] queue; [&IJy  
f 7g?{M  
public int get() { '|v??`o#  
return queue[1]; .f+ul@o  
} tS$^k)ZXip  
H@!\?5I  
public void remove() { B,`B!rU  
SortUtil.swap(queue,1,size--); a}oFL%=?  
fixDown(1); v37TDY3;  
} L^}i7nJ  
file://fixdown RbexsBq  
private void fixDown(int k) { D%tcYI(  
int j; aT v  
while ((j = k << 1) <= size) { )v1y P  
if (j < size %26amp;%26amp; queue[j] j++; %RlG~a  
if (queue[k]>queue[j]) file://不用交换 \ C^fi}/]  
break; n|G x29 E  
SortUtil.swap(queue,j,k); }3G`f> s  
k = j; /h/f&3'h  
} zli@XZ#  
} u}zCcWP|L  
private void fixUp(int k) { ]Q?`|a+i  
while (k > 1) { H9d! -9I  
int j = k >> 1; DK!QGATh  
if (queue[j]>queue[k]) BhO*Pfs  
break; 3<5E254N  
SortUtil.swap(queue,j,k); P>*B{fi^  
k = j; m@|0iDS  
} #>I*c _-  
} Zd2B4~V  
Mqy5>f)  
} OxGS{zs  
\S]"nHX  
} [2]Ti_ >D  
IK:F~I  
SortUtil: b^SQCX+P  
E?L^ L3s  
package org.rut.util.algorithm; ZGstD2 N$  
.@#GNZe  
import org.rut.util.algorithm.support.BubbleSort; 'qhi8=*  
import org.rut.util.algorithm.support.HeapSort; r8o9C  
import org.rut.util.algorithm.support.ImprovedMergeSort; g{t)I0xm  
import org.rut.util.algorithm.support.ImprovedQuickSort; r&^xg`i[z>  
import org.rut.util.algorithm.support.InsertSort; h .A@o#x  
import org.rut.util.algorithm.support.MergeSort; RW4}n< 88  
import org.rut.util.algorithm.support.QuickSort; \Lp|S:u  
import org.rut.util.algorithm.support.SelectionSort; 3LxhQVx2  
import org.rut.util.algorithm.support.ShellSort; (?9@nS  
4 _*^~w  
/** !B&OK&*  
* @author treeroot |4=Du-e  
* @since 2006-2-2 h92'~X36  
* @version 1.0 XI4le=^EM  
*/ *]L(,_:"  
public class SortUtil { Bh'_@PHP  
public final static int INSERT = 1; !=C74$TH  
public final static int BUBBLE = 2; 2ZZ%BV!s  
public final static int SELECTION = 3; j. @CB`  
public final static int SHELL = 4; 17-D\ +}  
public final static int QUICK = 5; C-vFl[@a0  
public final static int IMPROVED_QUICK = 6; vG`;2laY  
public final static int MERGE = 7; /7s^OkQ  
public final static int IMPROVED_MERGE = 8; *bi!iz5F  
public final static int HEAP = 9; *.4VO+^  
Y|*a,H"_  
public static void sort(int[] data) {  b7]MpL  
sort(data, IMPROVED_QUICK); 0j =xWC  
} ;y"=3-=vM"  
private static String[] name={ q_5hKipd\b  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" hKG)* Q  
}; j_3X 1w)k  
mes/gqrJ1I  
private static Sort[] impl=new Sort[]{ ,KT[ }P7  
new InsertSort(), {S+  $C  
new BubbleSort(), *,hg+?lZ  
new SelectionSort(), `R9}.?7  
new ShellSort(), scXY~l]I*  
new QuickSort(), TSgfIE|  
new ImprovedQuickSort(), <BUKTRq  
new MergeSort(), K2'Il[  
new ImprovedMergeSort(), 1 P0)La#  
new HeapSort() _TGv"c@V  
}; ;x]CaG)f  
K\bA[5+N  
public static String toString(int algorithm){ Tz PG(f  
return name[algorithm-1]; 8ZnHp~  
} m$ubxI)  
!Zr 9t|_  
public static void sort(int[] data, int algorithm) { 4[& L<D6h  
impl[algorithm-1].sort(data); m %=] j<A  
} vpnOc2 -  
+>w %j&B  
public static interface Sort { p!b_tyJ  
public void sort(int[] data); D-v}@tS'  
} M, uQ8SZA[  
v;%>F)I  
public static void swap(int[] data, int i, int j) { )z:"P;b"Nl  
int temp = data; T5:p^;?g  
data = data[j]; /t4#-vz  
data[j] = temp; Rxl )[\A*  
} n7CwGN%  
} WbIf)\  
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