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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。 !|P>%bi  
插入排序: [ F id  
o,a 3J:j]  
package org.rut.util.algorithm.support; 9OYsI  
tA?P$5?-*  
import org.rut.util.algorithm.SortUtil; > <WR]`G  
/** ; qT~81  
* @author treeroot KD]8n]c  
* @since 2006-2-2 3cK`RM `  
* @version 1.0 ;74hOHDS  
*/ Vw7NLTE}`  
public class InsertSort implements SortUtil.Sort{ nKn,i$sO/.  
f]F]wg\_f  
/* (non-Javadoc) m S[Vl6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bg$df 0  
*/ >SA?lG8f%  
public void sort(int[] data) { 0w?\KHT  
int temp; 9N^&~O|1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zItf>j7|Z  
} $_,?SXM  
} {3Z&C$:s  
} Y$8 >fv  
kJP fL s  
} E7E>w#T5  
Jt6~L5[_s  
冒泡排序: $0rSb0[  
A!}Wpw%(/  
package org.rut.util.algorithm.support; Lx&2)  
3rX5haD\  
import org.rut.util.algorithm.SortUtil; o ~"?K2@T  
8E`rs)A  
/** JwR]!  
* @author treeroot Yrp WGK520  
* @since 2006-2-2 i>gbT+*E!  
* @version 1.0 VIo %((  
*/ Lc;4 Hg  
public class BubbleSort implements SortUtil.Sort{ mVGQyX  
=VkbymIZ4y  
/* (non-Javadoc) pNFL;k+p}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N_TWT&o4  
*/ F-%wOn /  
public void sort(int[] data) {  k?|l;6  
int temp; ;c"T#CH.  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (7w`BR9B  
if(data[j] SortUtil.swap(data,j,j-1); .{as"h-.O  
} ; 2K_u  
} 09y%FzV  
} Y>z~0$  
} kDuN3  
pv%UsbY  
} FVkb9(WW  
?[Xv(60]  
选择排序: j["b*X`8G  
]Bw2>6W  
package org.rut.util.algorithm.support; &d]%b`EXq  
+rS}f N$L.  
import org.rut.util.algorithm.SortUtil; lb3:#?  
k mjSSh/t  
/** A=q)kcuy5  
* @author treeroot [@MV[$W5  
* @since 2006-2-2 qn}w]yGW  
* @version 1.0 F"xD^<i  
*/ d *ch.((-  
public class SelectionSort implements SortUtil.Sort { YUdCrb9F  
>x0"gh  
/* -7)%J+5  
* (non-Javadoc) H)S&sx#q]  
* j!9p#JK#u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `Y `Ujr\6  
*/ gV]]?X&  
public void sort(int[] data) { 1t{h)fwi  
int temp; !MoJb#B3^]  
for (int i = 0; i < data.length; i++) { C*kGB(H7  
int lowIndex = i; o9+ "6V|.  
for (int j = data.length - 1; j > i; j--) { l@ vaupg  
if (data[j] < data[lowIndex]) { x_lCagRGC4  
lowIndex = j; 4R-Y9:^t  
} ur^)bp<n  
} 8/X#thG  
SortUtil.swap(data,i,lowIndex); q h;ahX~  
} _y{z%-  
} wS"[m>.{v  
?2l#=t?PP  
} [xiZkV([  
VA*~R S  
Shell排序: <oG+=h  
] fz0E:x  
package org.rut.util.algorithm.support; iK{ a9pt  
86!"b  
import org.rut.util.algorithm.SortUtil; ;pu68N(B  
C=L_@{^Rgb  
/** =E@wi?  
* @author treeroot kW>Q9Nc=V  
* @since 2006-2-2 z+5l: f  
* @version 1.0 t?H.M  
*/ !\wdX7%  
public class ShellSort implements SortUtil.Sort{ *het_;)+{  
q B-9&X  
/* (non-Javadoc) cwi HHf>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &!uw;|%  
*/ |UvM [A|+  
public void sort(int[] data) { /Y:1zLs%  
for(int i=data.length/2;i>2;i/=2){ 6#P\DT  
for(int j=0;j insertSort(data,j,i); N8.K[m  
} dOPA0Ja  
} iQsv^K!\  
insertSort(data,0,1); 1'tagv?  
} +-~hl  
BH _y0[y  
/** pE(\q+1<  
* @param data >&V?1!N"  
* @param j 4/; X-  
* @param i ' O1X+  
*/ #@xSR:m  
private void insertSort(int[] data, int start, int inc) { rJi;"xF8  
int temp; cbvK;;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); WJvD,VMz  
} d5$2*h{^v  
} 1(6B|w5+  
} tpw0j CVu  
iR j/Tm*T'  
} MkJ}dncg*  
gIv :<EJ9  
快速排序: [v$_BS#u^3  
J~7E8  
package org.rut.util.algorithm.support; w5uOi}T\  
[wB-e~   
import org.rut.util.algorithm.SortUtil; ')_Gm{A#p  
C 9IKX  
/** _%#Q \ D  
* @author treeroot -'& 4No  
* @since 2006-2-2 u=B_cA}:  
* @version 1.0 z-(@j;.  
*/ GFd~..$  
public class QuickSort implements SortUtil.Sort{ .sNUU 3xSC  
It,m %5 Py  
/* (non-Javadoc) JJJlgr]#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qp8. D4^@3  
*/ q H&7Q{  
public void sort(int[] data) { ( XYYbP  
quickSort(data,0,data.length-1); @a,X{ 0  
} n\k6UD  
private void quickSort(int[] data,int i,int j){ AD$k`Cj  
int pivotIndex=(i+j)/2; O8+e: K[D  
file://swap h*2Q0GRX  
SortUtil.swap(data,pivotIndex,j); '@'~_BBZP  
\z!*)v/{-  
int k=partition(data,i-1,j,data[j]); w$Lpuu n{  
SortUtil.swap(data,k,j); V&4)B &W  
if((k-i)>1) quickSort(data,i,k-1); z7V74hRPX  
if((j-k)>1) quickSort(data,k+1,j); %m[ :},  
:_v/a+\n  
} SpbOvY=>  
/** O)C y4[  
* @param data <]I[|4J 7  
* @param i #iD5& klo\  
* @param j UKyOkuY:w  
* @return =&?}qa(P  
*/ JzH\_,,  
private int partition(int[] data, int l, int r,int pivot) { -DDH)VO  
do{ F[/Bp>P7  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~?&;nTwHe  
SortUtil.swap(data,l,r); WHxq-&=  
} \eD#s  
while(l SortUtil.swap(data,l,r); 3c] oU1GfF  
return l; Sd?:+\bS;  
} :@KU_U)\  
8m Tjf Br  
} `?VtB!p@x=  
sl^i%xJ|l'  
改进后的快速排序: n,sl|hv2U  
UP=0>jjbn:  
package org.rut.util.algorithm.support; @2Xw17[f35  
tj 6 #lM9  
import org.rut.util.algorithm.SortUtil; ]$/TsN  
vH_QSx;C#  
/** zt{?Nt b  
* @author treeroot _U)BOE0o  
* @since 2006-2-2 d K|6p_  
* @version 1.0 ") kE 1D%  
*/ clK3kBh~&  
public class ImprovedQuickSort implements SortUtil.Sort { ` oN~  
z VleJ!d  
private static int MAX_STACK_SIZE=4096; @F)51$Ld  
private static int THRESHOLD=10; A2 r1%}{  
/* (non-Javadoc) V D+TJ` r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [O*5\&6  
*/ j3|Ek  
public void sort(int[] data) { "o&_tB;O  
int[] stack=new int[MAX_STACK_SIZE]; WP&P#ju&  
INrl^P*  
int top=-1; E>~DlL%  
int pivot; [FLRrTcE  
int pivotIndex,l,r; NN1d?cOn  
e$>.x< Eq  
stack[++top]=0; -;=0dfC(  
stack[++top]=data.length-1; tWL3F?wd  
\/,54c2  
while(top>0){ yQb^]|XG  
int j=stack[top--]; # JHicx\8l  
int i=stack[top--]; zOA{S~>  
d U n+?  
pivotIndex=(i+j)/2; 4$9WJ ~V{  
pivot=data[pivotIndex]; -1t"(v  
xZAc~~9tD  
SortUtil.swap(data,pivotIndex,j); B0I(/ 7  
KJc fbZ~  
file://partition [*zB vj}G  
l=i-1; HFYN(nz}[  
r=j; :3WrRT,'L  
do{ 7z!|sPW](b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); HNN,1MN  
SortUtil.swap(data,l,r); hMz= \)Pl  
} ]S+NH[g+  
while(l SortUtil.swap(data,l,r); >?s[g)np  
SortUtil.swap(data,l,j); 4UD7!  
82#7TX4  
if((l-i)>THRESHOLD){ :lz@G 4 =C  
stack[++top]=i; KP" lz  
stack[++top]=l-1; a$!|)+  
} ju#/ {V;D  
if((j-l)>THRESHOLD){ em`z=JGG  
stack[++top]=l+1; )s^D}I(  
stack[++top]=j; EjLj5Z/q  
} zs!,PQF(  
SSO F\  
} \{  
file://new InsertSort().sort(data); ;&4}hPq  
insertSort(data); &~oBJar  
} (+}H ih  
/** wi/Fx=w  
* @param data ; V)pXLE  
*/ ]pi"M 3f_  
private void insertSort(int[] data) { \C;cs&\Q  
int temp; /bm$G"%d  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Dz$GPA   
} V+My]9ki  
} urmx})=  
} M.|O+K z  
71`)@y,Z,  
} "<6X=|C  
{xb8H  
归并排序: p^PAbCP'|3  
@{16j# 'R  
package org.rut.util.algorithm.support; RWM9cV5  
 GZ.Xx  
import org.rut.util.algorithm.SortUtil; 3>X]`Oj7y  
A*tG[)  
/** "HI&dC  
* @author treeroot sd|5oz )  
* @since 2006-2-2 UMsJg7~  
* @version 1.0 *aF#on{  
*/ h^ wu8E   
public class MergeSort implements SortUtil.Sort{ ^PDz"L<*  
RGd@3OjN  
/* (non-Javadoc) \IB@*_G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ,r\  
*/ O ;,BzA-n  
public void sort(int[] data) { @ *W)r~ "~  
int[] temp=new int[data.length]; 9m^"ca  
mergeSort(data,temp,0,data.length-1); J8Bz|.@Q  
} L{_Q%!h3]  
"w3#2q&  
private void mergeSort(int[] data,int[] temp,int l,int r){ pC<~\RR  
int mid=(l+r)/2; 1FC'DH!  
if(l==r) return ; ,S(^r1R   
mergeSort(data,temp,l,mid); Ce 3{KGBw  
mergeSort(data,temp,mid+1,r); .$nQD.X  
for(int i=l;i<=r;i++){ zzlV((8 ~  
temp=data; :t?Z  
} h!l&S2)D`  
int i1=l; :l~^un|<2Y  
int i2=mid+1; C+ \c(M a  
for(int cur=l;cur<=r;cur++){ K,f*}1$qM  
if(i1==mid+1) M*ZR+pq,  
data[cur]=temp[i2++]; tQz=_;jy  
else if(i2>r) R5PXX&Q  
data[cur]=temp[i1++]; NN(ZH73  
else if(temp[i1] data[cur]=temp[i1++]; 49S*f  
else 8w-2Q  
data[cur]=temp[i2++]; c:QZ(8d]L  
} GZY8%.1{"a  
} 9z>I&vcX  
h/`]=kCl  
} xZ'-G6O "~  
y(gL.08<  
改进后的归并排序: :iW+CD)j  
zJC!MeN  
package org.rut.util.algorithm.support; CJ+/j=i;~c  
f.Wip)g  
import org.rut.util.algorithm.SortUtil; (bpO>4(S  
cE (P^;7D  
/** 9i+OYWUO  
* @author treeroot FKhmg&+>  
* @since 2006-2-2 LIzdP,^pc  
* @version 1.0 (I(?oCQ  
*/ kw,eTB<;R  
public class ImprovedMergeSort implements SortUtil.Sort { VRe7Q0  
kg0X2^#b  
private static final int THRESHOLD = 10; @)[Q6w`x  
KtTlc#*KU  
/* bs_>!H1  
* (non-Javadoc) p5RnFe l  
* *4]u?R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5q<cZ)v#&  
*/ %t&   
public void sort(int[] data) { k@[\ C`P  
int[] temp=new int[data.length]; n=t50/jV3=  
mergeSort(data,temp,0,data.length-1); |qUi9#NUo  
} 25e*W>SLw  
~SKV%  
private void mergeSort(int[] data, int[] temp, int l, int r) { O9%`G  
int i, j, k; ylFoYROO  
int mid = (l + r) / 2; 9]u=b\fzZ  
if (l == r) %x}iEqkU  
return; V { #8+  
if ((mid - l) >= THRESHOLD) G;RFY!o  
mergeSort(data, temp, l, mid); HpbSf1VvAf  
else 2bu,_<K.  
insertSort(data, l, mid - l + 1); l', +l{\Z  
if ((r - mid) > THRESHOLD) B{}<DP.  
mergeSort(data, temp, mid + 1, r); .|XG0M  
else S($8_u$U  
insertSort(data, mid + 1, r - mid); hJ~Na\?w  
pl#2J A8  
for (i = l; i <= mid; i++) { tVI6GXH  
temp = data; 244[a] %&;  
} 4gR;,%E\TO  
for (j = 1; j <= r - mid; j++) { @k+&89@G  
temp[r - j + 1] = data[j + mid]; +Tf4SJ  
} q4y P\B  
int a = temp[l]; *'?aXS -'r  
int b = temp[r]; bCa%$  
for (i = l, j = r, k = l; k <= r; k++) { +( Q$GO%  
if (a < b) { kZb #k#  
data[k] = temp[i++]; _?VMSu  
a = temp; g:dtfa/]  
} else { 8Pb~`E/  
data[k] = temp[j--]; -BV8,1  
b = temp[j]; v 3p'*81;  
} zD"n7;  
} rXh*nC  
} r`dQ<U,  
U# +$N3%  
/** [I~&vLTe  
* @param data RIm8PV;N  
* @param l 2}\/_Y6  
* @param i 1eP`  
*/ 1hTE^\W  
private void insertSort(int[] data, int start, int len) { 1]&FB{l  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +,g3Xqs}X  
} I$0O4  
} &':Ecmo~`  
} $@Bd}35 J  
} -v@LJCK7I  
]z77hcjB1  
堆排序: * \$m1g7b  
C%RYQpY*c  
package org.rut.util.algorithm.support; " ""k}M2A  
+nAbcBJAl  
import org.rut.util.algorithm.SortUtil; o;kxu(>yL'  
i!<1&{  
/** !VDNqW  
* @author treeroot C0K0c6A (4  
* @since 2006-2-2 n g,&;E  
* @version 1.0 |KMwK png  
*/ 0 s$;3qE  
public class HeapSort implements SortUtil.Sort{ <u_ vL WS  
BjSd\Ul  
/* (non-Javadoc) {D$5M/$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /:Q  
*/ ;:PxWm|_  
public void sort(int[] data) { Of}dsav   
MaxHeap h=new MaxHeap(); mu*RXLai  
h.init(data); jk\z-hd  
for(int i=0;i h.remove(); 0h-'TJg*sk  
System.arraycopy(h.queue,1,data,0,data.length); (=-6'23q)  
} Q "vhl2RX  
"Snt~:W>  
private static class MaxHeap{ GBY-WN4sc[  
0$g;O5y"i  
void init(int[] data){ 8wEUly  
this.queue=new int[data.length+1]; XN&cM,   
for(int i=0;i queue[++size]=data; +\R__tx;  
fixUp(size); p![UOI"W  
} |[_%zV;p>v  
} X,A]<$ACu%  
]x(cX&S-9  
private int size=0; /lS5B6NU  
}'p"q )  
private int[] queue; %dwI;%0  
hLICu[LC?  
public int get() { 0FcG;i+  
return queue[1]; <kCOg8<y :  
} @P )2ZGG  
Di"Tv<RlQ  
public void remove() { koa-sy)#L  
SortUtil.swap(queue,1,size--); yz<$?Gblz  
fixDown(1); r"|UgCc  
} 5AbY 59  
file://fixdown XiM d|D  
private void fixDown(int k) { Q?2Gw N  
int j; Nu;?})tF  
while ((j = k << 1) <= size) { HcQ)XJPK  
if (j < size %26amp;%26amp; queue[j] j++; QJy1j~9x  
if (queue[k]>queue[j]) file://不用交换 2,6~;R  
break; $%6.lQ  
SortUtil.swap(queue,j,k); yvWM]A  
k = j; 9RPZj>ezjA  
} ;(-Wc9=  
} tc0(G~.N  
private void fixUp(int k) { $@HW|Y  
while (k > 1) { >{)\GK0i 7  
int j = k >> 1; -V&nlP  
if (queue[j]>queue[k]) ~l8w]R3A  
break; }nRTw2-z  
SortUtil.swap(queue,j,k); }X/>WiGh:  
k = j; Ye|(5f  
} b]4\$rW7  
} \iRmGvT  
G1a56TIN~  
} <{T5}"e  
pkf$%{"e  
} hTQ8y10a  
(?x R<]~g*  
SortUtil: `>- 56 %  
D<g d)  
package org.rut.util.algorithm; J=J!)\m  
^ 4Uk'T7V  
import org.rut.util.algorithm.support.BubbleSort; -asjBSo*D  
import org.rut.util.algorithm.support.HeapSort; skYHPwJdW  
import org.rut.util.algorithm.support.ImprovedMergeSort; VGf&'nL@,  
import org.rut.util.algorithm.support.ImprovedQuickSort; V-(*{/^"  
import org.rut.util.algorithm.support.InsertSort; D}`MY\H  
import org.rut.util.algorithm.support.MergeSort; t2Px?S?  
import org.rut.util.algorithm.support.QuickSort; t$3B#=  
import org.rut.util.algorithm.support.SelectionSort; wBJ|%mc3TA  
import org.rut.util.algorithm.support.ShellSort; R"y xpw  
;$67GK  
/** rvacCwI  
* @author treeroot P(UY}oU  
* @since 2006-2-2 +G6 Ge;  
* @version 1.0 0a2#36;_IK  
*/ 3a[LM!  
public class SortUtil { dZY|6  
public final static int INSERT = 1; rJ{k1H>  
public final static int BUBBLE = 2; Z,DSTP\|  
public final static int SELECTION = 3; R=3|(R+kA  
public final static int SHELL = 4; +K s3  
public final static int QUICK = 5; "rrw~  
public final static int IMPROVED_QUICK = 6; vm7ag 7@O  
public final static int MERGE = 7; fR b  
public final static int IMPROVED_MERGE = 8; A34O(fE  
public final static int HEAP = 9; -,Js2+QZ#  
~z(0XKq0d  
public static void sort(int[] data) { nsM. `s@V  
sort(data, IMPROVED_QUICK); %d%FI"!K  
} P]iJ"d]+X  
private static String[] name={ !"ir}Y%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H.;2o(vD  
}; kCALJRf~d  
"=ki_1/P  
private static Sort[] impl=new Sort[]{ QUm[7<"  
new InsertSort(),  ^Kl*}  
new BubbleSort(), j/jFS]iC  
new SelectionSort(), <J>k%,:B  
new ShellSort(), d)3jkHYEjj  
new QuickSort(), !ALq?u  
new ImprovedQuickSort(), O6,2M[a  
new MergeSort(), ]T{v~]7:{  
new ImprovedMergeSort(), k8!:`jG  
new HeapSort() *&tTiv{^  
}; a)*(**e$*i  
iaJLIrl  
public static String toString(int algorithm){ E5 #ff5  
return name[algorithm-1]; \<hHZS  
} +4p=a [  
,|Gjr T{vf  
public static void sort(int[] data, int algorithm) { 4s9.")G  
impl[algorithm-1].sort(data); If]rg+|U  
} /'zXb_R,$  
"sIww  
public static interface Sort { wwet90_g  
public void sort(int[] data); gi>W&6  
} ">M&/}4  
3ZN\F  
public static void swap(int[] data, int i, int j) { ]9~Il#  
int temp = data; P+y XC^ ,  
data = data[j]; \mTi@T!&  
data[j] = temp; a*t @k*d_  
} ;n.h!wmJ}  
} Nobu= Z  
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