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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。 qE2<vjRg  
插入排序: "#wAGlH6>  
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package org.rut.util.algorithm.support; wrJQkven-  
Q3ZGN1aX<  
import org.rut.util.algorithm.SortUtil; :gRrM)n  
/** [Uk cG9  
* @author treeroot nycJZ}f:wP  
* @since 2006-2-2 \_.'/<aQ  
* @version 1.0 mL1ZSX o!  
*/ 1R-0b{w[  
public class InsertSort implements SortUtil.Sort{ EUw4$Jt^p  
?:vg`m!*  
/* (non-Javadoc) wOL%otEf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iOa<=  
*/ 3SWDPy  
public void sort(int[] data) { z]g#2xD2  
int temp; {0j,U\ kb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X{xkXg8h  
} ,Z|O y|+'  
} rIPg,4y*S!  
} fQ~~%#z1  
Z=-#{{bv  
} w#9.U7@.  
TCzz]?G]la  
冒泡排序: IJ.H/l}h  
kN 2mPD/  
package org.rut.util.algorithm.support; < *iFVjSI(  
C|H`.|Q  
import org.rut.util.algorithm.SortUtil; a.u{b&+9  
>}.~Y#Ge  
/** MV<)qa T  
* @author treeroot VKXi*F9  
* @since 2006-2-2 7202N?a {  
* @version 1.0 r8R7@S2V'  
*/ 2O(k@M5E?  
public class BubbleSort implements SortUtil.Sort{ UV%o&tv|<  
b^[>\s'  
/* (non-Javadoc) :F5(]g 7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6R m dt  
*/ fC^d@4ha  
public void sort(int[] data) { ajRht +{  
int temp; Q >yj<DR  
for(int i=0;i for(int j=data.length-1;j>i;j--){ m?Jnb\0  
if(data[j] SortUtil.swap(data,j,j-1); iU0jv7}n  
} rfdA?X{Q0  
} ~mH'8K|l  
} i]zh8|">  
} g0~m[[  
+Rd\*b  
} RU.j[8N$  
LCRWC`%&  
选择排序: hBZh0x y  
GXx'"SK9  
package org.rut.util.algorithm.support; d?U,}tv  
)jI4]6  
import org.rut.util.algorithm.SortUtil; .h w(;  
(q 7;/n  
/** t re`iCH~  
* @author treeroot ]%7m+-h@  
* @since 2006-2-2 Yo5ged]i  
* @version 1.0 Qmd2C&Xw  
*/ +CEt:KQ   
public class SelectionSort implements SortUtil.Sort { ZnbpIJ8cV  
%D7^.  
/* M9Z9s11{H  
* (non-Javadoc) pOy(XUV9O  
* S-6i5H"B&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |a1zJ_t4  
*/ C>l (4*S  
public void sort(int[] data) { ]w)uo4<^J  
int temp; (s1iYK  
for (int i = 0; i < data.length; i++) { UQ e1rf  
int lowIndex = i; GYT0zMMf  
for (int j = data.length - 1; j > i; j--) { ,+Ya'4x  
if (data[j] < data[lowIndex]) { f b8xs<  
lowIndex = j; K/(Z\lL  
} T/L\|_:'  
} ^y&2N  
SortUtil.swap(data,i,lowIndex); ]~m=b` o  
} `EP-Qlm  
} 3wgZDF38  
00W_XhJ  
} &@&^k$du8q  
[eF|2:  
Shell排序: Y% [H:  
E&vCzQ  
package org.rut.util.algorithm.support; CZv^,O(M?2  
"g!/^A!!  
import org.rut.util.algorithm.SortUtil; 9zehwl]~  
gcM(K.n  
/** kvN6K6  
* @author treeroot |[bQJ<v6  
* @since 2006-2-2 IgF#f%|Q  
* @version 1.0 >vfLlYx  
*/ |Pse=_i  
public class ShellSort implements SortUtil.Sort{ ijNI6_eU  
A.P*@}9  
/* (non-Javadoc) H~<wAer,Op  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e $5s],,n  
*/ +zFEx%3^  
public void sort(int[] data) { RoD9  
for(int i=data.length/2;i>2;i/=2){ Im`R2_(]  
for(int j=0;j insertSort(data,j,i); ~r]$(V n  
} %+$!ctn  
} (n{!~'3  
insertSort(data,0,1); /P{'nI  
} ^6 ,}*@  
mc6W"  
/** L-3wez;hm  
* @param data Sj'.)nz>  
* @param j $)O\i^T  
* @param i XOY\NMo  
*/ m`3gNox  
private void insertSort(int[] data, int start, int inc) { VS<w:{*  
int temp; QRY7ck:N  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &4F iYZ  
} ;xE1#ZT  
} TP/bPZY  
} +Kg3qS"  
e]d\S] 5  
} hniTMO  
qQ<7+z<4KP  
快速排序: %aJ8wYj*  
LTio^uH  
package org.rut.util.algorithm.support; y=WCR*N  
p["20 ?^  
import org.rut.util.algorithm.SortUtil; B\7 80p<  
t4,(W`  
/** cy_zEJjbD  
* @author treeroot ^t)alNGos  
* @since 2006-2-2 O$& 4{h`  
* @version 1.0 CY.i0  
*/ v/C*?/ ~  
public class QuickSort implements SortUtil.Sort{ )RwO2H  
-+.-Ab7  
/* (non-Javadoc) hrnY0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V^p XbDRl  
*/ ^F$iD (f  
public void sort(int[] data) { af2yng  
quickSort(data,0,data.length-1); &uv7`VT  
} >:U{o!N`#_  
private void quickSort(int[] data,int i,int j){ Nxt z1  
int pivotIndex=(i+j)/2; W#[3a4%m  
file://swap Fm.IRu<\`  
SortUtil.swap(data,pivotIndex,j); PxZMH=  
xXc3#n  
int k=partition(data,i-1,j,data[j]); /T/7O  
SortUtil.swap(data,k,j); t.m C q 4{  
if((k-i)>1) quickSort(data,i,k-1); so\8.(7n  
if((j-k)>1) quickSort(data,k+1,j); xHdv?69,  
!p"Ijz5  
} [kg*BaG:  
/** [ U?a %$G>  
* @param data 0\^K\J ,.  
* @param i ?9AtFT  
* @param j 9ioV R  
* @return ?t];GNU`l  
*/ +QVe -  
private int partition(int[] data, int l, int r,int pivot) { fxk6q$'  
do{ DC%H(2  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +aIy':P  
SortUtil.swap(data,l,r); >5=uq _QY  
} wrt^0n'r)c  
while(l SortUtil.swap(data,l,r); erZ%C <  
return l; I!-5 #bxD  
} BnLE +X  
_LSf )  
} ;*EPAC+  
e$@azi1  
改进后的快速排序: t12 xPtN1  
4wQ>HrS)(  
package org.rut.util.algorithm.support; Gj([S17\0:  
~w9ZSSb4  
import org.rut.util.algorithm.SortUtil; 'gwh:8Xc  
0E#3XhU  
/** dy*CDRU4  
* @author treeroot  ~/kx  
* @since 2006-2-2 -J=N  
* @version 1.0 vy330SQPo  
*/ QZ51}i  
public class ImprovedQuickSort implements SortUtil.Sort { q!zsGf {  
J deGQ  
private static int MAX_STACK_SIZE=4096; -{XXU)Z  
private static int THRESHOLD=10; ' fm}&0  
/* (non-Javadoc) 5hbQUF ,Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F45UO%/P  
*/ O(QJiS  
public void sort(int[] data) { ^iq$zHbc0u  
int[] stack=new int[MAX_STACK_SIZE]; DR6 OR B7  
x,SzZ)l-9  
int top=-1; 0<T/P+|  
int pivot; wsNM'~(  
int pivotIndex,l,r; Mw+8p}E  
-=D6[DjU<  
stack[++top]=0; d4zqLD$A  
stack[++top]=data.length-1; 5 5T c  
c,I|O' &k  
while(top>0){ h .$3 jNU  
int j=stack[top--]; C6C7*ks  
int i=stack[top--]; "ewB4F[  
BSu ]NOwe  
pivotIndex=(i+j)/2; ;ywQk| r  
pivot=data[pivotIndex]; 7o]p0iLej  
 /P/S0  
SortUtil.swap(data,pivotIndex,j); Ug^v ]B9  
"xV9$m>  
file://partition x p#+{}  
l=i-1; "ujt:4 p@  
r=j; |F 18j9  
do{ +wwK#ocw  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i`1QR@11  
SortUtil.swap(data,l,r); j.@TPf*  
} w oqP&8a  
while(l SortUtil.swap(data,l,r); wz P")}[0  
SortUtil.swap(data,l,j); "sf]I[a  
`)W}4itm  
if((l-i)>THRESHOLD){ {s=$.Kg  
stack[++top]=i; w<]Wg^dyQ  
stack[++top]=l-1; 8HyK;+ZkVd  
} ei8OLcw:x  
if((j-l)>THRESHOLD){ 85fBKpEe  
stack[++top]=l+1; z;_d?S <*m  
stack[++top]=j; 0#mu[O  
} &\0`\#R  
u&>o1!c*P  
} P:")Qb2  
file://new InsertSort().sort(data); {AY `\G  
insertSort(data); e>kw>%3bl9  
} `"E|  
/** F_$K+6  
* @param data v?7.)2XcX  
*/ f&S,l3H<  
private void insertSort(int[] data) { h.6yI  
int temp; WlnI`!)d  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *zy0,{bl  
} dB`YvKr#  
} 9* %Uoy:  
} ;,y9  
}>w;(R  
} 'lU9*e9  
@,-xaZ[  
归并排序: !=.5$/  
l\yFx  
package org.rut.util.algorithm.support; U&6!2s-  
QMzBx*g(  
import org.rut.util.algorithm.SortUtil; c4R6E~S  
^AUmIyf_  
/** [Uezi1I  
* @author treeroot PF1m :Iz`d  
* @since 2006-2-2 {}ZQK  
* @version 1.0 m.MOn3n]  
*/ X }yEMe{T  
public class MergeSort implements SortUtil.Sort{ XY5I5H_U  
J0}OmNTzD  
/* (non-Javadoc) RkN a;j)t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R0M(e@H~  
*/ $o`N%]  
public void sort(int[] data) { eD*"#O)W  
int[] temp=new int[data.length]; ".qh]RVjV  
mergeSort(data,temp,0,data.length-1); ~<pGiW'w5  
} 1X/ q7lR  
e/WR\B'1  
private void mergeSort(int[] data,int[] temp,int l,int r){ J*8fGR%  
int mid=(l+r)/2; i8nCTW  
if(l==r) return ; \)ac,i@fy  
mergeSort(data,temp,l,mid); N"b>]Ab] ;  
mergeSort(data,temp,mid+1,r); `?Wak =]g  
for(int i=l;i<=r;i++){ NwmO[pt+  
temp=data; gU Cv#:  
} ,c6ID|\  
int i1=l; oSt-w{ !  
int i2=mid+1; EeKEw Sg  
for(int cur=l;cur<=r;cur++){ r}P{opn$t  
if(i1==mid+1) f;6a4<bz  
data[cur]=temp[i2++]; J%3%l5 /  
else if(i2>r) Z^AACKME  
data[cur]=temp[i1++]; i`Es7 }  
else if(temp[i1] data[cur]=temp[i1++]; }`yIO"{8n  
else MOyQ4<_  
data[cur]=temp[i2++]; un[Z$moN"  
} #5T+P8  
} +"a . ,-f!  
~) }npS;  
} DL2gui3  
;KmSz 1A  
改进后的归并排序: POc< G^  
~l-Q0wg  
package org.rut.util.algorithm.support; "}|n;:r  
<UG}P \N  
import org.rut.util.algorithm.SortUtil; `I<*R0Qe  
!E> *Mn  
/** ;y?,myO  
* @author treeroot \{n]&IjA  
* @since 2006-2-2 i 4eb\j  
* @version 1.0 1P4jdp=~  
*/ oa+Rr&t'  
public class ImprovedMergeSort implements SortUtil.Sort { 0?ZJJdI3  
_ 9Tv*@  
private static final int THRESHOLD = 10; q[l},nw  
)k3zOKZ;  
/* K!k,]90Ko  
* (non-Javadoc) H;}V`}c<`  
* K%>uSS?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9xC,i )  
*/ Q5iuK#/  
public void sort(int[] data) { `w]=x e  
int[] temp=new int[data.length]; &`<j!xlG  
mergeSort(data,temp,0,data.length-1); 8(D>ws$  
} w@ 4q D  
^l ~i>:V  
private void mergeSort(int[] data, int[] temp, int l, int r) { S(Xab_DT)H  
int i, j, k; K3TMTY<p  
int mid = (l + r) / 2; M=e]v9  
if (l == r) )=;0  
return; `RfhxzI  
if ((mid - l) >= THRESHOLD) cgm]{[f  
mergeSort(data, temp, l, mid); ]~)FMWQz-  
else _odP:  
insertSort(data, l, mid - l + 1); X<_(gg  
if ((r - mid) > THRESHOLD) I* \o  
mergeSort(data, temp, mid + 1, r); '6fMF#X4F  
else %K /=7  
insertSort(data, mid + 1, r - mid); $)mE"4FE  
v-X1if1%  
for (i = l; i <= mid; i++) { (H<S&5[  
temp = data; sn/^#Aa=N  
} _{KQQ5k\  
for (j = 1; j <= r - mid; j++) { R|ViLty  
temp[r - j + 1] = data[j + mid]; Tv3Bej  
} ^x4I  
int a = temp[l]; !Z,h5u\.w  
int b = temp[r]; b-@VR  
for (i = l, j = r, k = l; k <= r; k++) { ?Il$f_"B:  
if (a < b) { E:(flW=  
data[k] = temp[i++]; ^:\|6`{n  
a = temp; G#8HY VF  
} else { qn6Y(@<[  
data[k] = temp[j--]; W{At3Bfy  
b = temp[j]; [(w _!|S  
} ^/2n[orl5  
} &n6mXFF#>P  
} V(A6>0s$|  
7<oLe3fbM  
/** a [iC!F2  
* @param data  Jt.dR6,  
* @param l q*\ #H C  
* @param i uv}[MXOP  
*/ ,+KZn}>  
private void insertSort(int[] data, int start, int len) { 7Nw7a;h  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;-lk#D?n9  
} +L!-JrYHS4  
} \('8 _tqI"  
} Y>{K2#k  
}  RN'|./N  
|%g^6RN  
堆排序: Ni'vz7j  
#q%xJ[  
package org.rut.util.algorithm.support; c</d1xT  
OnC|9  
import org.rut.util.algorithm.SortUtil; s9PD[u/y  
amK?LDf]  
/** A jr]&H4  
* @author treeroot ce/Rzid  
* @since 2006-2-2 bPAp0}{Fu  
* @version 1.0 xXE/pIXw  
*/ PtCwr)B,  
public class HeapSort implements SortUtil.Sort{ -wy$ ?Ha  
=K=FzV'_~  
/* (non-Javadoc) 0iinr:=u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T/V8&'^i  
*/ gd R wh  
public void sort(int[] data) { ^TJn&k  
MaxHeap h=new MaxHeap(); YW}q@AY7  
h.init(data); (!&cfabL  
for(int i=0;i h.remove(); t]#y} V  
System.arraycopy(h.queue,1,data,0,data.length); h-=3 b  
} =da_zy  
>;dMumX  
private static class MaxHeap{ { ,/mQ3  
3 ~0Z.!O  
void init(int[] data){ a=&a)FR  
this.queue=new int[data.length+1]; j` 9pZAF  
for(int i=0;i queue[++size]=data; QDRSQ[\  
fixUp(size); RRqHo~*0  
} j8$*$|  
} $U<so{xn%  
ns9iTU)  
private int size=0; znw\Dn?g  
@Nn9- #iW  
private int[] queue; Pdmfn8I]%  
6&S;Nrg9  
public int get() { (n05MwKu\  
return queue[1]; D+]#qS1q  
} CDQ}C=4  
M2(+}gv;7p  
public void remove() { \]e"#"v}}_  
SortUtil.swap(queue,1,size--); 2K'3ry)[y  
fixDown(1); ^I@1y}xi  
} ZWQrG'$?o8  
file://fixdown k]!Fh^O~,  
private void fixDown(int k) { UJ 1iXV[h"  
int j; hW$B;  
while ((j = k << 1) <= size) { V~tq _  
if (j < size %26amp;%26amp; queue[j] j++; 1hw1AJ}(F  
if (queue[k]>queue[j]) file://不用交换 F=U3o=-:  
break; ,o& &d.  
SortUtil.swap(queue,j,k); ^&MMtWR  
k = j;  $J>GCY  
} acz8 H 0cS  
} %Wkvo-rOq  
private void fixUp(int k) { ;t{Ew+s  
while (k > 1) { dFFJw[$8w  
int j = k >> 1; nR-`;lrF~  
if (queue[j]>queue[k]) XZLo*C!MG  
break; @tWyc%t  
SortUtil.swap(queue,j,k); cJd~UQ<k  
k = j; bYGK}:T8U  
} rn#FmM  
} :3M2zV cf  
Q3vC^}Dmr  
} uV!Ax *'  
"rOe J~4 X  
} i[/g&fx  
3zo]*6p0  
SortUtil: >!MOgLO3  
 ^E*W B~  
package org.rut.util.algorithm; sy=M#WGS  
2F[smUL  
import org.rut.util.algorithm.support.BubbleSort; f^z~{|%l!  
import org.rut.util.algorithm.support.HeapSort; wWv")dk3i  
import org.rut.util.algorithm.support.ImprovedMergeSort; I&?(=i)N  
import org.rut.util.algorithm.support.ImprovedQuickSort; q{5wx8_U  
import org.rut.util.algorithm.support.InsertSort; O}I8P")m  
import org.rut.util.algorithm.support.MergeSort; =T;>$&qs  
import org.rut.util.algorithm.support.QuickSort; D0 Yl?LU3  
import org.rut.util.algorithm.support.SelectionSort; ^AkVmsv;;  
import org.rut.util.algorithm.support.ShellSort; mD{<Lp=  
DvCs 5  
/** #5-5N5-1  
* @author treeroot u@tJu'X  
* @since 2006-2-2 YjN2 ,Xi  
* @version 1.0 ! /;@kXN  
*/ Fk@A;22N  
public class SortUtil { bmgK6OyVR  
public final static int INSERT = 1; /. GHR  
public final static int BUBBLE = 2; FtXd6)_S  
public final static int SELECTION = 3; }CnqJ@>C5  
public final static int SHELL = 4; R("g ]  
public final static int QUICK = 5; \>0%E{CR  
public final static int IMPROVED_QUICK = 6; w DswK "T  
public final static int MERGE = 7; T+ey>[  
public final static int IMPROVED_MERGE = 8; ,ef"S r  
public final static int HEAP = 9; }'mVD^<+  
/` 891( f,  
public static void sort(int[] data) { P0NGjS|Z{  
sort(data, IMPROVED_QUICK); _PD RUJ  
} X]ow5{e  
private static String[] name={ Dnn$-W|NC  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" gKy@$at&  
}; VU3xP2c:  
l!CWE  
private static Sort[] impl=new Sort[]{ {j i;~9'Q  
new InsertSort(), c6FKpdn%  
new BubbleSort(), "~j SG7h  
new SelectionSort(), 0`.3`Mk   
new ShellSort(), F4'g}y OLd  
new QuickSort(), qI;"yG-x-  
new ImprovedQuickSort(), X_GR{z%  
new MergeSort(), "9 ,z"k  
new ImprovedMergeSort(), /cHd&i,>  
new HeapSort() [ lZo'o  
}; ,RIGV[u  
M:x?I_JG8  
public static String toString(int algorithm){ &~VWh}=r  
return name[algorithm-1]; sk !92mQ  
} v$c*3H.seM  
fq(r,h=|  
public static void sort(int[] data, int algorithm) { 4Kjrk7GAx  
impl[algorithm-1].sort(data); ^*.S7.;2o  
} 9s\(yC8h  
V\Oe] w  
public static interface Sort { ^%l~|w  
public void sort(int[] data);  +]Ca_`  
} Y2709LWmP  
i bA Z*I  
public static void swap(int[] data, int i, int j) { Ncr38~;w  
int temp = data; ^% y<7>%  
data = data[j]; #eSVFD5ZU  
data[j] = temp; ^DVj_&~  
} d'ddxT$GG  
} ;AyE(|U+  
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