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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。 l<GN<[/.+  
插入排序: n:OXv}pv  
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package org.rut.util.algorithm.support;  Ux*xz|^  
ix2i.wdD  
import org.rut.util.algorithm.SortUtil; }P0bNY5?%  
/** 7@\.()  
* @author treeroot "Zh,;)hS  
* @since 2006-2-2 xb3G,F  
* @version 1.0 wbAwmOiZ  
*/ Gd_0FF.  
public class InsertSort implements SortUtil.Sort{ ,v K%e>e&  
19qH WU^0V  
/* (non-Javadoc) Pz{MYw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &qG/\  
*/ KR?aL:RYb  
public void sort(int[] data) { q,L>PN+W  
int temp; * 3fl}l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B qX"La,  
} I3Z?xsa@Z  
} $<nRW*d  
} %W\NYSm  
hmo4H3g!N  
} S',h*e  
cB){b'WJ  
冒泡排序: r=0PW_r:  
|ugdl|f  
package org.rut.util.algorithm.support; 5>.ATfAsV  
Ie/_gz^  
import org.rut.util.algorithm.SortUtil; <<u]WsW{C  
(m:Q'4Ep  
/** QUn!& 55  
* @author treeroot 6E-eD\?I&  
* @since 2006-2-2 JCn HEH  
* @version 1.0 @9| jY1  
*/ npltsK):  
public class BubbleSort implements SortUtil.Sort{ 4 H0rS'5d  
YiO}"  
/* (non-Javadoc) UTh2? Rh/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2PyuM=(Wt  
*/ s_/@`kd{  
public void sort(int[] data) { t2)uJN`a$X  
int temp; f?tU5EX  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Rf8Obk<  
if(data[j] SortUtil.swap(data,j,j-1); 7FcZxu\  
} ]pBEoktp  
} z2YYxJ c&w  
} 9DhM 9VU  
} ygnZ9ikh<-  
3WF]%P%  
} =Pw{1m|k  
-LRx}Mb9  
选择排序: ,.p 36ZLP  
Ve%ua]qA  
package org.rut.util.algorithm.support; Nuot[1kS  
;&=CZ6vH  
import org.rut.util.algorithm.SortUtil; -%MXt  
S8dfe~|7:  
/** r4/b~n+*  
* @author treeroot kE'p=dXx  
* @since 2006-2-2 "[~yu* S  
* @version 1.0 ]sb?lAxh{  
*/ 36(qe"s  
public class SelectionSort implements SortUtil.Sort { 8iaMr278W  
&?bsBqpN  
/* ~/K&=xE  
* (non-Javadoc) #rX ^)2  
* ai$l7]7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *W\3cS  
*/ qfl!>  
public void sort(int[] data) { KJoa^e;~  
int temp; X5/j8=G H`  
for (int i = 0; i < data.length; i++) { 'uL$j=vB  
int lowIndex = i; 0vfMJzk  
for (int j = data.length - 1; j > i; j--) { 2WH(c$6PWf  
if (data[j] < data[lowIndex]) { 6AJ`)8HX  
lowIndex = j; m<3. X"-  
} P_0X+Tz  
} Y QC.jnb2  
SortUtil.swap(data,i,lowIndex); '6qH@r4Z<  
} fDns r" T  
} U.SC,;N^  
iu=Mq|t0  
} )u Hat#  
[>?|wQy>=  
Shell排序: 4z5qXI/<m4  
rhPv{6Z|7  
package org.rut.util.algorithm.support; ?GNR ab  
9)vU/fJ|  
import org.rut.util.algorithm.SortUtil; jc_k\  
_VdJFjY?zc  
/** Z72%Bv  
* @author treeroot c!6v-2ykv  
* @since 2006-2-2 bS8$[7OhX  
* @version 1.0 7=fN vES2  
*/ xI?'Nh  
public class ShellSort implements SortUtil.Sort{ T DR|*Cs  
Q3l>xh  
/* (non-Javadoc) |+ Rx)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z1q<) O1QX  
*/ !%t@wQ]\hG  
public void sort(int[] data) { `;}qjm0a  
for(int i=data.length/2;i>2;i/=2){ %IVM1  
for(int j=0;j insertSort(data,j,i); Xk%eU>d  
} vo }4N[]Sb  
} o'$-  
insertSort(data,0,1); .jP|b~  
} i`l;k~rP  
- i2^ eZl  
/** .$cX:"_Mk  
* @param data "" ^n^$  
* @param j /7S g/d%c  
* @param i U~yPQ8jD  
*/ wS|k3^OV%  
private void insertSort(int[] data, int start, int inc) { ',[AKXJ  
int temp; l^bak]9 1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vqT) =ZC1  
} cLL2 '  
} h#UPU7;  
} +76ao7d.  
?H_@/?  
} "})OLa  
V_$<^z|  
快速排序: '>|K d{J0  
*^[6uaa  
package org.rut.util.algorithm.support; ckFPx l.  
[g"nu0sOK  
import org.rut.util.algorithm.SortUtil; zwQ#Yvd  
U+B{\38  
/** X=?9-z] QO  
* @author treeroot u8?$W%eW  
* @since 2006-2-2 g; -3  
* @version 1.0 Fg p|gw4  
*/ )g8Kicox5  
public class QuickSort implements SortUtil.Sort{ $HOe){G  
Q$p3cepsK  
/* (non-Javadoc) ;8MQ'#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Dhx6xM[a  
*/ :_HdOm  
public void sort(int[] data) { /z!y[ri+J  
quickSort(data,0,data.length-1); J0&-UnJ  
} a|y'-r90  
private void quickSort(int[] data,int i,int j){ #G(ivRo  
int pivotIndex=(i+j)/2; E Y !o#m  
file://swap e:MbMj6`  
SortUtil.swap(data,pivotIndex,j); /: -&b#+  
,\+N}F^  
int k=partition(data,i-1,j,data[j]); FU*q9s`  
SortUtil.swap(data,k,j); fS'` 9  
if((k-i)>1) quickSort(data,i,k-1); \ 6taC  
if((j-k)>1) quickSort(data,k+1,j); w#BT/6W&G  
OD Ry  
} 2H8\P+  
/** -0`n(`2  
* @param data er BerbEEH  
* @param i Y evd h<  
* @param j 8.wtv5eZ  
* @return "-:g.x*d  
*/ j)ln"u0R^B  
private int partition(int[] data, int l, int r,int pivot) { h~%8p ]  
do{ vY4}vHH2  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <M5fk?n,|  
SortUtil.swap(data,l,r); ryz NM3  
} 4k{xo~+%,  
while(l SortUtil.swap(data,l,r); Xep2 )3k>  
return l; 2Gj)fMK38  
} 4,YL15.  
R$dNdd9m  
} q3v5gz^t  
ntPX?/  
改进后的快速排序: N2j^fZd_  
+>yh` Zb  
package org.rut.util.algorithm.support; yoieWnL}  
<7Yh<(R e^  
import org.rut.util.algorithm.SortUtil; ?c"i V  
^g2Vz4u  
/** M'X,7hZ  
* @author treeroot Hv' OO@z  
* @since 2006-2-2 +S#Xm4  
* @version 1.0 XCxxm3t  
*/ /`#JM  
public class ImprovedQuickSort implements SortUtil.Sort { {ktwX\z  
NTK9`#SA  
private static int MAX_STACK_SIZE=4096; =%I;Y& K  
private static int THRESHOLD=10; mss.\  
/* (non-Javadoc) S&l [z,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %<O~eXY  
*/ hH05p!2  
public void sort(int[] data) { &Vpr[S@:{  
int[] stack=new int[MAX_STACK_SIZE]; m#_M"B.cm  
Ue`Y>T7+!  
int top=-1; vaVV 1  
int pivot; F4V) 0)G  
int pivotIndex,l,r; l  LBzY`j  
c1R[Hck  
stack[++top]=0; PN J&{4wY  
stack[++top]=data.length-1; HHgv, bC!  
}=gD,]2x8  
while(top>0){ C(>g4.-p8  
int j=stack[top--]; h'vBWtMa  
int i=stack[top--]; g&. OJ  
e6 <9`Xg  
pivotIndex=(i+j)/2; TZg1,Z  
pivot=data[pivotIndex]; I 5ZDP|  
&oZU=CN  
SortUtil.swap(data,pivotIndex,j); |{,c2 Ck:N  
Dequ'  
file://partition m9 c`"!  
l=i-1; $Dv5TUKw  
r=j; ^rY18?XC+:  
do{ ,j(E>g3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K0I.3| 6C  
SortUtil.swap(data,l,r); Ix(,gDN  
} Ne3YhCC>  
while(l SortUtil.swap(data,l,r); K2v[_a~@  
SortUtil.swap(data,l,j); @a=jSB#B  
G~_D'o<r  
if((l-i)>THRESHOLD){ ,5T1QWn^f  
stack[++top]=i; 33~8@]b  
stack[++top]=l-1; z'O+B}  
}  Bw+ ?MdS  
if((j-l)>THRESHOLD){ :7Uv)@iUk  
stack[++top]=l+1; '<e$ c  
stack[++top]=j; 4}*.0'Hz  
} 9`^(M^|c  
k`z]l;:  
} S|6i]/  
file://new InsertSort().sort(data); xj AU Csq  
insertSort(data);  VS7  
} f?16%Rk<  
/** (m2_Eh;  
* @param data ?h| DeD!s  
*/ [yc7F0Aw  
private void insertSort(int[] data) { =C|^C3HK  
int temp; xwwL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (KPD`l8.  
} oe<@mz/  
} /m^G 99N  
} HvZSkq^  
|-cXb.M[  
} 1IT(5Mleb  
*<"{(sAvk  
归并排序: *p\fb7Pu_3  
!4Sd^"  
package org.rut.util.algorithm.support; zITxJx  
/Ah'KN|EN  
import org.rut.util.algorithm.SortUtil; %z.d;[Hs  
im)r4={ 9  
/** P{J9#.Zq&s  
* @author treeroot 6V6Mo}QF s  
* @since 2006-2-2 +o0yx U 7t  
* @version 1.0 eQ6wEeB9  
*/ c&h8Qk3  
public class MergeSort implements SortUtil.Sort{ ZTB6m`  
c@nh>G:y{&  
/* (non-Javadoc) %uiCC>cC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,R7j9#D  
*/ XJwgh y?(  
public void sort(int[] data) { 4L97UhLL  
int[] temp=new int[data.length]; ;nAx@_ab^  
mergeSort(data,temp,0,data.length-1);  <pD  
} ?s)6 YF  
V|awbff:  
private void mergeSort(int[] data,int[] temp,int l,int r){ Tks1gN^^  
int mid=(l+r)/2; -H|!KnR  
if(l==r) return ; YV>&v.x0;  
mergeSort(data,temp,l,mid); W+4Bx=Mj  
mergeSort(data,temp,mid+1,r); (Gapv9R  
for(int i=l;i<=r;i++){ VpY,@qh  
temp=data; 8b4? O"  
} XgeUS;qtta  
int i1=l; 7xWJw  
int i2=mid+1; )"2eN3H/  
for(int cur=l;cur<=r;cur++){ ,4-],~T  
if(i1==mid+1) tuY= )?  
data[cur]=temp[i2++]; 9JILK9mVO  
else if(i2>r) 8|L5nQ  
data[cur]=temp[i1++]; *&+zI$u(  
else if(temp[i1] data[cur]=temp[i1++]; W(-son~I  
else e(&u3 #7Nn  
data[cur]=temp[i2++]; )Q}Q -Zt  
} R,OT\FQ<  
} \TDn q!)?  
}6{00er  
} 8f%OPcr&  
/V] i3ac  
改进后的归并排序: p=i6~   
Xw|-v$'y  
package org.rut.util.algorithm.support; _,e4?grP#  
Z}SqiT  
import org.rut.util.algorithm.SortUtil; o,0 Z^"|  
R'atg 9  
/** fI=p^k:  
* @author treeroot G$CSZrP.  
* @since 2006-2-2 \-[ >bsg  
* @version 1.0 !u4eI0?R?  
*/ t.bM]QU!1  
public class ImprovedMergeSort implements SortUtil.Sort { "W9z>ezp  
^![7X'!;pt  
private static final int THRESHOLD = 10; ~~t >;  
VrhHcvnZ  
/* "kIlxf3  
* (non-Javadoc) t47;X}y f  
* P^ lzbWj^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L i 9$N"2  
*/ zQ u9LN  
public void sort(int[] data) { #%#N.tB 5  
int[] temp=new int[data.length]; ]ZI@?H? O  
mergeSort(data,temp,0,data.length-1); )g]A 'A=  
} V<PH5'^$j  
q,;wD1_wG  
private void mergeSort(int[] data, int[] temp, int l, int r) { 3e\IRF xzb  
int i, j, k; ;.R) uCd{=  
int mid = (l + r) / 2; ?T|0"|\"'  
if (l == r) EyBTja(4  
return; /{I-gjovy  
if ((mid - l) >= THRESHOLD) + kF%>F]  
mergeSort(data, temp, l, mid); X V)ctF4  
else DC_k0VBn  
insertSort(data, l, mid - l + 1); 45jImCm  
if ((r - mid) > THRESHOLD) :n%&  
mergeSort(data, temp, mid + 1, r); $_\x}`c~.  
else ~9;udBfwF  
insertSort(data, mid + 1, r - mid); tk:G6Bkid  
Bc b '4*:  
for (i = l; i <= mid; i++) { qamq9F$V  
temp = data; M}=>~TA@  
} [l<&eI&ln  
for (j = 1; j <= r - mid; j++) { A2P.5EN  
temp[r - j + 1] = data[j + mid]; 1jPh0?BY  
} l=$?#^^ /  
int a = temp[l]; Wk!<P" nHd  
int b = temp[r]; KAu>U3\/  
for (i = l, j = r, k = l; k <= r; k++) { >5 Y.  
if (a < b) { 2nL*^hhh  
data[k] = temp[i++]; lJx5scN [  
a = temp; Wdj|RKw  
} else { :j/sTO=  
data[k] = temp[j--]; (>lH=&%zj  
b = temp[j]; OcC|7s" ,  
} u6MU @?  
} (rBYE[@,  
} >m%7dU  
\uJ+~db=  
/** 5as5{"l  
* @param data 'cc{sjG  
* @param l Np$ue }yr  
* @param i GsiKL4|mj  
*/ h1f 05  
private void insertSort(int[] data, int start, int len) { j|XL$Q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -q? ,  
}  ]4K4Nh~  
} X7tBpyi  
} .}(X19R  
} 3h A5"G+7  
#n|eq{fkK  
堆排序: TWfk r  
Ya!PV&"Z  
package org.rut.util.algorithm.support; 'tX}6wurf  
mSk";UCn  
import org.rut.util.algorithm.SortUtil; WQB V~.<Yv  
G%K&f1q%  
/** xNLgcb@v>  
* @author treeroot q:vGGK^  
* @since 2006-2-2 wZKmU  
* @version 1.0 .4<lw  
*/ ,;<M+V3+  
public class HeapSort implements SortUtil.Sort{ HJlxpX$_  
_|;{{8*?  
/* (non-Javadoc) z 8#{=e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7>AM zNj  
*/ D^f;X.Qm  
public void sort(int[] data) { ,,7hVw  
MaxHeap h=new MaxHeap(); j}fSz)`i  
h.init(data); rQ&XHG>Q*  
for(int i=0;i h.remove(); b"OHXu  
System.arraycopy(h.queue,1,data,0,data.length); ?t/\ ID  
} ln6=XDu  
OE_V6 Er  
private static class MaxHeap{ Zv8_<>e  
 ?H_>?,^  
void init(int[] data){ \pP1k.~UnC  
this.queue=new int[data.length+1]; 5Ux=5a  
for(int i=0;i queue[++size]=data; T!^v^m@>y  
fixUp(size); \+x#aN\  
} 6X!jNh$oF  
} 152LdZevF  
10N0?K"  
private int size=0; O&VA79\UO  
{Wfwf  
private int[] queue; - "{hP  
-*kZ2grLt  
public int get() { @,LU!#y(  
return queue[1]; I\IDt~  
} FiXqypT_(  
jc,Q g2  
public void remove() { -av=5hm  
SortUtil.swap(queue,1,size--); n{M-t@r7  
fixDown(1); K;>9K'n  
} jBd=!4n  
file://fixdown  J2Qt!-  
private void fixDown(int k) { h*3{IHAQ  
int j; 5Z=GFKf|  
while ((j = k << 1) <= size) { Il#ST  
if (j < size %26amp;%26amp; queue[j] j++; _c(h{dn  
if (queue[k]>queue[j]) file://不用交换 %:OX^ ^i;  
break; nE bZ8M  
SortUtil.swap(queue,j,k); TJZ arNc$  
k = j; G 6xN R  
} 8m[o*E.4F  
} ]]y,FQ,r  
private void fixUp(int k) { _ G2)=yj]  
while (k > 1) { u EERNo&  
int j = k >> 1; bHXoZix  
if (queue[j]>queue[k])  w U1[/  
break; XK;Vu#E*^  
SortUtil.swap(queue,j,k); r-Y7wM`TZ  
k = j; +k/=L9#e  
} wbg ?IvY[  
} K1&t>2=%  
31QDN0o!~  
} ",aEN=+|hV  
SQ'%a-Mct  
} U_Q;WPJ  
cxx8I  
SortUtil: '+c@U~d*7  
lAo4)  
package org.rut.util.algorithm; {CFy %  
(Bv~6tj~J  
import org.rut.util.algorithm.support.BubbleSort; gtqtFrleG  
import org.rut.util.algorithm.support.HeapSort; S@TfZ3Go|  
import org.rut.util.algorithm.support.ImprovedMergeSort; &MB1'~Q,hq  
import org.rut.util.algorithm.support.ImprovedQuickSort; 9Sl5jn  
import org.rut.util.algorithm.support.InsertSort; 0r?]b*IEK  
import org.rut.util.algorithm.support.MergeSort; I$XwM  
import org.rut.util.algorithm.support.QuickSort; Tl+PRR6D*  
import org.rut.util.algorithm.support.SelectionSort; aN!,\D  
import org.rut.util.algorithm.support.ShellSort; ,kl``w|1M  
*)vy%\  
/** R0|4KT-i  
* @author treeroot ;hh.w??  
* @since 2006-2-2 AOz~@i^  
* @version 1.0 IIF <Zkpb  
*/ pOj8-rr  
public class SortUtil { CBz=-Xr  
public final static int INSERT = 1; S,a:H*Hf  
public final static int BUBBLE = 2; kxmsrQ>av  
public final static int SELECTION = 3; tJGK9!MH{(  
public final static int SHELL = 4; {s6hi#R>  
public final static int QUICK = 5; }%^3  
public final static int IMPROVED_QUICK = 6; JbN,K  
public final static int MERGE = 7; f'BmIFb#  
public final static int IMPROVED_MERGE = 8; P0k.\8qz  
public final static int HEAP = 9; Os!x<r|r  
#F6M<V'  
public static void sort(int[] data) { [jGE {<Je  
sort(data, IMPROVED_QUICK); @4Q /J$  
} F;Q'R |HQ  
private static String[] name={ u(PUbxJ V  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xlh<}V tp  
}; K~fWZT3]  
l%qh^0  
private static Sort[] impl=new Sort[]{ by$mD_sr  
new InsertSort(), rqKK89fD'  
new BubbleSort(), ^b^buCYw  
new SelectionSort(), Z4m+GFY  
new ShellSort(), =c%gV]>G  
new QuickSort(), #RKd >ig%  
new ImprovedQuickSort(), _<l)4A3rS  
new MergeSort(), o  WAy[  
new ImprovedMergeSort(), FtDF}   
new HeapSort() 2tQ?=V(Di  
}; |D[LU[<C  
Or55_E  
public static String toString(int algorithm){ E5a7p.  
return name[algorithm-1]; hZ')<@hNP  
} pr1kYMrqri  
\FnR'ne  
public static void sort(int[] data, int algorithm) { nj-LG!"a  
impl[algorithm-1].sort(data); 1KjzKFnb  
} Q@"!uB.e  
zQ(`pld  
public static interface Sort { !wZIXpeL  
public void sort(int[] data); Pjq()\/[Z  
} UMHFq-  
Pj5:=d8z(  
public static void swap(int[] data, int i, int j) { IBW-[lr7  
int temp = data; `trcYmR=k  
data = data[j]; 6LqF*$+$`  
data[j] = temp; Hr \vu`p$  
} :!FGvR6  
} @ *5+ZAF  
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