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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。 [<S^c[47U  
插入排序: 5k~\or 5_  
!5~k:1=  
package org.rut.util.algorithm.support; }*Zo6{B-  
R;'?;I  
import org.rut.util.algorithm.SortUtil; XWXr0>!,?  
/** ,J& 9kYz  
* @author treeroot AqqHD=Yp  
* @since 2006-2-2 yW`e |!  
* @version 1.0 w5(yCyNp~  
*/ =x#&\ui  
public class InsertSort implements SortUtil.Sort{ dm& /K 4c  
3HKxYvc C  
/* (non-Javadoc) WGMb8 /{$P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s`1^*Dl%+  
*/ /=/ HB  
public void sort(int[] data) { ](nH{aY!  
int temp; .pW o>`"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nALnB1  
} 7UDq/:}Fo  
} L#!$hq9{_  
} DJ|BM+  
*m&%vj.Kc  
} > Y ] _K  
`)2[ST  
冒泡排序: oLw|uU-|  
gmDR{loX  
package org.rut.util.algorithm.support; h1c{?xH2r  
5us^B8Q  
import org.rut.util.algorithm.SortUtil; Kr]W o8dWy  
x{?sn  
/** !t% Q{`p  
* @author treeroot qK,V$l(4#  
* @since 2006-2-2 1!1DuQ  
* @version 1.0 = hhvmo  
*/ ,2_w=<hq  
public class BubbleSort implements SortUtil.Sort{ F9O`HFVK  
4|=vxJ  
/* (non-Javadoc) wE4;Rk1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vcM~i^24)  
*/ %l;*I?0H  
public void sort(int[] data) { gCL{Cw  
int temp; <r3Jf}%tT  
for(int i=0;i for(int j=data.length-1;j>i;j--){ :cdQ(O.m  
if(data[j] SortUtil.swap(data,j,j-1); ~b#OFnyG  
} 7*MU2gb  
} o$t &MST?i  
} 3(o7co-f  
} f B7ljg  
Q.1XP  
} E|{m"RUOy  
1 w17L]4  
选择排序: U3+A MVnB  
Bz:&f46{  
package org.rut.util.algorithm.support; AA2ui%  
y{92Lym  
import org.rut.util.algorithm.SortUtil; bM5CDzH(#X  
}_]As}E  
/** *l {4lu  
* @author treeroot !-ZP*V3}h  
* @since 2006-2-2 1@@y]s_.a  
* @version 1.0 *_#&"(P  
*/ g&kH'fR8  
public class SelectionSort implements SortUtil.Sort { 9cz)f\  
zuMO1s  
/* 7j T#BWt  
* (non-Javadoc) E[ 0Sst x  
* {KsVK4\r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QY6O(=  
*/ Az9J\V~"  
public void sort(int[] data) { 8F)=n \  
int temp; CC>($k"  
for (int i = 0; i < data.length; i++) { L&QtHSzy  
int lowIndex = i; Q K j1yG0i  
for (int j = data.length - 1; j > i; j--) { Lrlk*   
if (data[j] < data[lowIndex]) { FCAJavOGH  
lowIndex = j; H4 =IY  
} ^Eu_NUFe  
} RyE_|]I62u  
SortUtil.swap(data,i,lowIndex); ,8~dz  
} Zik m?(J  
} ]| z")gOE  
61kO1,Uz*  
} y}Cj#I+a  
0f{IE@-b  
Shell排序: C[g&F 0 6  
soDfi-2o3  
package org.rut.util.algorithm.support; Yx!n*+:J  
s<,"Hsh^CR  
import org.rut.util.algorithm.SortUtil; QU,?}w'?d  
%uW<  
/** R@&?i=gk  
* @author treeroot ..aK sSm(  
* @since 2006-2-2 =uS8>.Qj  
* @version 1.0 TtZrttCE6  
*/ `!_?uT  
public class ShellSort implements SortUtil.Sort{ N4s$.`  
Nl=+.d6 Qo  
/* (non-Javadoc) +yvBSpY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yG4MUf6  
*/ F; 0Dp  
public void sort(int[] data) { #|q;t   
for(int i=data.length/2;i>2;i/=2){ X!m;uJZp  
for(int j=0;j insertSort(data,j,i); oR7 7`  
} u$\Tg3du2  
} =O;eY?  
insertSort(data,0,1); >H8^0n)?  
} |]I#CdO  
>|(WS.n3C  
/** {8_:4`YZ  
* @param data ID&zY;f  
* @param j X=\x&Wt  
* @param i {<"[D([  
*/ Mg&HRE  
private void insertSort(int[] data, int start, int inc) { %bN"bxv^  
int temp; UX?X]ZYVR  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "1AjCHZ  
} R+C+$?4NG  
} %uF:)   
} ayHn_  
N:5b1TdI,  
} WI%zr2T  
eUYG96Jw  
快速排序: rC=f#YjR  
h@ EJTAi  
package org.rut.util.algorithm.support; <x^IwS  
Fv<]mu  
import org.rut.util.algorithm.SortUtil; Gl=@>Dc%  
&MBOAHhze  
/** G6f %/m`  
* @author treeroot j^:b-:F  
* @since 2006-2-2 A-}PpH~.Z  
* @version 1.0 bl6':m+  
*/ CR P7U  
public class QuickSort implements SortUtil.Sort{ ">03~:oA  
iFY]0@yt  
/* (non-Javadoc) 54bF) <+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q^\{Zg)p  
*/ dV'6m@C  
public void sort(int[] data) { L>eQ*311  
quickSort(data,0,data.length-1); I):m6y@  
} Z(#XFXd  
private void quickSort(int[] data,int i,int j){ 34HFrMi  
int pivotIndex=(i+j)/2; X}kVBT1w+x  
file://swap <1v{[F_  
SortUtil.swap(data,pivotIndex,j); 'Wd3`4V$  
ikeJDKSG  
int k=partition(data,i-1,j,data[j]); X+fu hcn  
SortUtil.swap(data,k,j); K%o6hBlk_  
if((k-i)>1) quickSort(data,i,k-1); T "ZQPLg  
if((j-k)>1) quickSort(data,k+1,j); hrUm} @d  
)WzGy~p8K  
} 3XMBu*  
/** PL9zNCr-[  
* @param data `@W3sW/^  
* @param i }S1Z>ZA5  
* @param j O(b"F? w  
* @return Tq_1wX'\  
*/ [J(@$Qix  
private int partition(int[] data, int l, int r,int pivot) { o%y+Y;|?J  
do{ bL6L-S  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R V_MWv  
SortUtil.swap(data,l,r); d{vc wZQ  
} ot&j HS'  
while(l SortUtil.swap(data,l,r); $yP'k&b!  
return l; 9J't[( u|u  
} 3uB=L 7.  
^d5gz0d  
} vY8WqG]  
T<w*dX7F0K  
改进后的快速排序: cN0~;!{i  
XY&]T'A  
package org.rut.util.algorithm.support; h Kp,4D>2_  
^^20vwq  
import org.rut.util.algorithm.SortUtil; )m$1al  
/1s9;'I  
/** AIIBd  
* @author treeroot "H/2r]?GT  
* @since 2006-2-2 !;BZ#tF&  
* @version 1.0 |:J*>"sq  
*/ xF\}.OfWG  
public class ImprovedQuickSort implements SortUtil.Sort { f=-!2#%  
8=!r nJCav  
private static int MAX_STACK_SIZE=4096; w>1l@%U o  
private static int THRESHOLD=10; +?J_6Mo@X  
/* (non-Javadoc) ,4h! "c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8VBkIYgb  
*/ k}+MvGq  
public void sort(int[] data) { `&"H* Ie  
int[] stack=new int[MAX_STACK_SIZE]; ,_e/a   
VdjU2d  
int top=-1; =B ,_d0Id  
int pivot; wd2P/y42;;  
int pivotIndex,l,r; wnZ*k(  
^HOwN<}`#  
stack[++top]=0; .lNnY8<  
stack[++top]=data.length-1; umHs" d  
<7sF<KD  
while(top>0){ !Ed<xG/  
int j=stack[top--]; *cb D&R\  
int i=stack[top--]; (<AM+|  
` i^`Q  
pivotIndex=(i+j)/2; ?()E5 4y  
pivot=data[pivotIndex]; "=v J }  
<W^XSk  
SortUtil.swap(data,pivotIndex,j); =_H*fhXS  
ux/[d6To  
file://partition A+bu bH,  
l=i-1; 2=Vkjh-  
r=j; z!t3xFN&/  
do{ Kr+Bt y  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A{n*NxKCX!  
SortUtil.swap(data,l,r); 2C 8L\  
} eL] w' }\  
while(l SortUtil.swap(data,l,r); <whPM  
SortUtil.swap(data,l,j); rwV u?W  
D=pI'5&  
if((l-i)>THRESHOLD){ XQ4^:3Yc  
stack[++top]=i; v=yI#5  
stack[++top]=l-1; QBBJ1U  
} [K|>s(Sf*  
if((j-l)>THRESHOLD){ Br.$L  
stack[++top]=l+1; (fLbg,  
stack[++top]=j; =>9.@`.  
} .ON$vn7  
;MdK3c  
} q}7Df!<|  
file://new InsertSort().sort(data); e4NX\tCpw  
insertSort(data); {KQ-Ce-6  
} dM@k(9|  
/** yU&g|MV_  
* @param data szM=U$jKq  
*/ 3vvFF]D5k  
private void insertSort(int[] data) { _`Yvfz3  
int temp; #dn%KMo2r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $BO}D  
} EF7|%N  
} fAA@ziKg  
} ss M9t  
3\U,Kg  
} ?U.&7yY  
Bbe/w#Z  
归并排序: y0mg}N1  
*MyS7<  
package org.rut.util.algorithm.support; vng8{Mx90*  
l8n[8AT1  
import org.rut.util.algorithm.SortUtil; ]qP}\+:  
?RjKP3P  
/** %~v76;H<  
* @author treeroot bMK'J  
* @since 2006-2-2 MdTd$ 4J3  
* @version 1.0 )*QTxN  
*/  "lnk  
public class MergeSort implements SortUtil.Sort{ + 1%^c(3  
=jd=Qs IL  
/* (non-Javadoc) q'8@0FT0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rQQPs\o  
*/ ^ {]sD}Q"  
public void sort(int[] data) { ~6kA<(x   
int[] temp=new int[data.length]; pQm!Bt L  
mergeSort(data,temp,0,data.length-1); ]C:Ifh~  
} 0R!}}*Ee>q  
BKlc{=  
private void mergeSort(int[] data,int[] temp,int l,int r){ x`|tT%q@l  
int mid=(l+r)/2; EpS8,[w  
if(l==r) return ; _/w-gL{  
mergeSort(data,temp,l,mid); 9,a,A6xry  
mergeSort(data,temp,mid+1,r); kviSQM2  
for(int i=l;i<=r;i++){ y.]]V"'2  
temp=data; (( IBaEq  
} !iz vY  
int i1=l; ^Th"`Av5  
int i2=mid+1; L" ^366M!  
for(int cur=l;cur<=r;cur++){ 0 Ln5e.&  
if(i1==mid+1) IF?B`TmZ  
data[cur]=temp[i2++]; 3*23+}^G  
else if(i2>r) 7~9f rW<K  
data[cur]=temp[i1++]; *gpD4c7A\  
else if(temp[i1] data[cur]=temp[i1++]; ,ce^"yG  
else MldL"*HW:  
data[cur]=temp[i2++]; 5qB=@O]|G;  
} u#k6v\/  
} qN,FX#DP  
%+W >+xRb  
} (c|qX-%rC  
O)Dw<j)  
改进后的归并排序: =Bqa <Js  
~acK$.#  
package org.rut.util.algorithm.support; B91PlM.  
"}aM*(l+\  
import org.rut.util.algorithm.SortUtil; _!p$47  
eu|q {p  
/** e ;u8G/  
* @author treeroot 4W-+k  
* @since 2006-2-2 1E_Ui1[  
* @version 1.0 g~D6.OZU  
*/ Gv3Fg[MA@c  
public class ImprovedMergeSort implements SortUtil.Sort { A|OC?NZY  
_5`S)G{  
private static final int THRESHOLD = 10; Sg~A'dG  
zi[M{bm  
/* M{RZ-)IC  
* (non-Javadoc) ? Z fhz   
* q;~>h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +( (31l  
*/ u`2k6.-  
public void sort(int[] data) { Afl'-  
int[] temp=new int[data.length]; 17 iq  
mergeSort(data,temp,0,data.length-1); JJ3JULL2  
} MF sy`aiS  
y%l#lz=6  
private void mergeSort(int[] data, int[] temp, int l, int r) { nv Gd:]Z  
int i, j, k; yzl\{I&  
int mid = (l + r) / 2; n k3lC/f  
if (l == r) ",_  
return; &V{,D))6[  
if ((mid - l) >= THRESHOLD) "(VcYQ+  
mergeSort(data, temp, l, mid); =}lA|S  
else ;7*@Gf}R  
insertSort(data, l, mid - l + 1); M:f=JuAx  
if ((r - mid) > THRESHOLD) 80>!qG  
mergeSort(data, temp, mid + 1, r); =_6h{f&Q  
else ?O Nw*"9  
insertSort(data, mid + 1, r - mid); y.<Y]m  
3m7V6##+  
for (i = l; i <= mid; i++) { 5FKd{V'  
temp = data; Z-!T(:E]  
} [&s:x ,  
for (j = 1; j <= r - mid; j++) { ; O0rt1  
temp[r - j + 1] = data[j + mid]; -RDs{c`y%N  
} fG5}'8  
int a = temp[l]; o^6j(~  
int b = temp[r]; X6 :~Rjim*  
for (i = l, j = r, k = l; k <= r; k++) { #;]F:TlR  
if (a < b) { 0 d]G  
data[k] = temp[i++]; ^ w1R"qE"m  
a = temp; 2` qXD fD`  
} else { umn^QZ,  
data[k] = temp[j--]; V3UGx'@^y  
b = temp[j]; B`EgL/Wg[  
} uNBhVsM6<  
} dF]8>jBOL  
} )KQum`pO  
~riw7"  
/** b<7 qmg3  
* @param data .w)t<7 y  
* @param l #_\~Vrf(#  
* @param i A@'W $p?5r  
*/ E=trJge  
private void insertSort(int[] data, int start, int len) { 6LQO>k  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ZfikNQU9r  
} C;>Ll~f_  
} <Rt@z|Zv  
} B(dL`]@Xm  
} 6s2g+[  
Ma#-'J  
堆排序: m/Z_HER^  
hh}EDnx  
package org.rut.util.algorithm.support; NZP,hAUK,  
B[V=l<J  
import org.rut.util.algorithm.SortUtil; h_!"CF <n  
fTgN2U  
/** 'YZs6rcJ  
* @author treeroot [G/X  
* @since 2006-2-2 ;d40:q<  
* @version 1.0 ro@BmRMW  
*/ c Zr4  
public class HeapSort implements SortUtil.Sort{  Z.JTq~`I  
KZNyp%q  
/* (non-Javadoc) /d'u1FnA =  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s&</zU'  
*/ k#[s)Ja?s  
public void sort(int[] data) { !o!04_  
MaxHeap h=new MaxHeap(); gs >cx]>  
h.init(data); ic#drpl,  
for(int i=0;i h.remove(); @eWx4bl  
System.arraycopy(h.queue,1,data,0,data.length); i-b7  
} )`-]nMc  
DUr1s]+P  
private static class MaxHeap{ Km-B=6*QY  
Wz]S+IpY  
void init(int[] data){ &@-glF5  
this.queue=new int[data.length+1]; K e8cfd~c  
for(int i=0;i queue[++size]=data; $n"Llw&)  
fixUp(size); L+L9)8FJ  
} 06$9Uz9  
} )`^:G3w  
{5JXg9um  
private int size=0; C-Z,L#  
}1dh/Cc`  
private int[] queue; Tp13V.|  
LAeXe!y  
public int get() { DBRJtU!5x  
return queue[1]; }dM^6 Kd%  
} qQ_QF  
D6WsEd>  
public void remove() { GZo4uwG@a  
SortUtil.swap(queue,1,size--); <~OyV5:6  
fixDown(1); ND>}t#^$  
} _#:1Axx1  
file://fixdown 0*^Fk=>ej  
private void fixDown(int k) { (tvh9 o  
int j; nabN.Ly  
while ((j = k << 1) <= size) { L?fv5 S3  
if (j < size %26amp;%26amp; queue[j] j++; !w Bmf&=  
if (queue[k]>queue[j]) file://不用交换 .$iIr:Tc>  
break; U|nk8 6r  
SortUtil.swap(queue,j,k); i}19$x.D`  
k = j; 8Yh2K}  
} f/ZE_MN2  
} f]}F_]  
private void fixUp(int k) { }UrtDXhA  
while (k > 1) { xo$ZPnf(zv  
int j = k >> 1; "K<VZ  
if (queue[j]>queue[k]) hj4Rr(T  
break; vkK+ C~"  
SortUtil.swap(queue,j,k); \bfHGo=  
k = j; RAC-;~$WB  
} ./d (@@  
} ?x @khzk  
!MC W t  
} G. }yNjL8  
@w0[5ZAj  
} ( EX  
w3@ te\  
SortUtil: x-<dJ}`  
qJ@?[|2R  
package org.rut.util.algorithm; i  *<,@*  
$$@Tgkg?o  
import org.rut.util.algorithm.support.BubbleSort; 5kF5`5+Vj  
import org.rut.util.algorithm.support.HeapSort; _*9Zp1r  
import org.rut.util.algorithm.support.ImprovedMergeSort; e9d~Xi16KY  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^4"_I   
import org.rut.util.algorithm.support.InsertSort; EB#z\  
import org.rut.util.algorithm.support.MergeSort; yl}Hr*  
import org.rut.util.algorithm.support.QuickSort; 7@FB^[H:y  
import org.rut.util.algorithm.support.SelectionSort; Ogb_WO;)  
import org.rut.util.algorithm.support.ShellSort; ( nh!tC  
A SSoKrFL  
/** C N"c  
* @author treeroot G\Me%{b#  
* @since 2006-2-2 S%@$J~\rx  
* @version 1.0 JI&>w-~D  
*/ ezn>3?S  
public class SortUtil { Ut+mm\7  
public final static int INSERT = 1; bA)Xjq)Rr  
public final static int BUBBLE = 2; ^?2txLv,6  
public final static int SELECTION = 3; [3.rG!Na  
public final static int SHELL = 4; HIF] c  
public final static int QUICK = 5; Aq"_hjp  
public final static int IMPROVED_QUICK = 6; [>-k(D5D  
public final static int MERGE = 7; HZT;7<  
public final static int IMPROVED_MERGE = 8; $spf=t"nh  
public final static int HEAP = 9; uMI2Wnnc:/  
j!s&yHE1  
public static void sort(int[] data) { F,sT[C  
sort(data, IMPROVED_QUICK); _W;u Qg']  
} aqB^  %e  
private static String[] name={ 0e7!_ /9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" YblRwic  
}; Y%faf.$/9  
Ol? 2Qy.2)  
private static Sort[] impl=new Sort[]{ .#n?^73  
new InsertSort(), ?]t8$^m,;  
new BubbleSort(), V/Q6v YX  
new SelectionSort(), /a q%l]hQ@  
new ShellSort(), vZ08/!n  
new QuickSort(), 4Z_.Jdu w  
new ImprovedQuickSort(), gvC2\k{  
new MergeSort(), -4Xr5j%o  
new ImprovedMergeSort(),  lcr=^  
new HeapSort() )oj`K,#  
}; <n>< A+D  
M(|gfsD  
public static String toString(int algorithm){ AKpux,@xB  
return name[algorithm-1]; s+[=nau('w  
} {t 7 M  
BXdT;b"J(  
public static void sort(int[] data, int algorithm) { %VMazlM15  
impl[algorithm-1].sort(data); rdb%/@.-  
} |3i~?] A  
NB^.$ 3 9n  
public static interface Sort { J=$v+8&.  
public void sort(int[] data); sJr$[?  
} C>+UZ  
3 !,%;Vz=  
public static void swap(int[] data, int i, int j) { {\V)bizY;  
int temp = data; DirWe  
data = data[j]; t3M/ThIE  
data[j] = temp; ,Xn%-OT  
} ESO(~X+  
} IQM!dC  
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