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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。 O+!4KNN.-  
插入排序: c:Czu  
h]@'M1D%  
package org.rut.util.algorithm.support; gZHgL7@  
cvw17j  
import org.rut.util.algorithm.SortUtil; /%&5Iq\:vA  
/** ;(mNjxA  
* @author treeroot / 8O=3  
* @since 2006-2-2 t=lDN'\P  
* @version 1.0 GX23c i  
*/ lOA EM  
public class InsertSort implements SortUtil.Sort{ 2KO`+  
]U@~vA#''  
/* (non-Javadoc) lDBAei3iB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yIiVhI?X  
*/ a /]FlT  
public void sort(int[] data) { Z<<=2Xl(  
int temp; @GXKqi  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8(ZQM01;  
} G9&2s%lu.e  
} ~%lUzabMa  
} RKzO$T  
~jJ.E_i  
} 4'3;{k$z  
Qu<6X@+5  
冒泡排序: =84EX<B  
NxA4*_|H9  
package org.rut.util.algorithm.support; M8:i]   
Xm<_!=  
import org.rut.util.algorithm.SortUtil; YXTV$A+lW  
Yt=)=n  
/** Dl~(NLM  
* @author treeroot @=z.^I30  
* @since 2006-2-2 ;jx[  +  
* @version 1.0 DXj>u9*%  
*/ &kvmLOI  
public class BubbleSort implements SortUtil.Sort{ D HQxu4  
Uufig)6  
/* (non-Javadoc) "N'W~XPG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :G98uX t  
*/ 9%21Q>Y?b  
public void sort(int[] data) { (!b)<V*  
int temp; '>"blfix8  
for(int i=0;i for(int j=data.length-1;j>i;j--){ JXRU9`3)A  
if(data[j] SortUtil.swap(data,j,j-1); NKEmY-f;  
} y5c\\e  
} y(iq  
} mw^>dv?  
} %R?WkG  
6d5J*y2  
} t%e<]2-8  
J9;fqQCt  
选择排序: _R]0S  
D=%1?8K  
package org.rut.util.algorithm.support; }^Sk.:;n3  
[%yj' )R/  
import org.rut.util.algorithm.SortUtil; V= &M\58  
_pb*kJ  
/** o,?G(  
* @author treeroot ,?jc0L.'r]  
* @since 2006-2-2 7@g0>1Fz  
* @version 1.0 ex`T 9j.=B  
*/ b{aB^a:f=L  
public class SelectionSort implements SortUtil.Sort { yEjiMtQll]  
2[(~_VJ  
/* F_-xp1|  
* (non-Javadoc) xR kw+  
* J2 )h":2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'wYIJK~1  
*/ v,*C>u\3s  
public void sort(int[] data) { NZZy^p&O  
int temp; .vy@uT,  
for (int i = 0; i < data.length; i++) { =NY55t.  
int lowIndex = i; "P|n'Mx  
for (int j = data.length - 1; j > i; j--) { ia_@fQ  
if (data[j] < data[lowIndex]) { ~4=*kJ#7  
lowIndex = j; aaKf4}  
} XC;Icr)  
} ^$% Sg//  
SortUtil.swap(data,i,lowIndex); %x{kd8>u!  
} Pf,@U'f|  
} ,m]5j_< }  
Bf #cBI  
} R3a}YwJFXF  
^Y+C!I  
Shell排序: *{+{h;p  
#O;JV}y  
package org.rut.util.algorithm.support; rq!*unJ  
(&Lt&i _  
import org.rut.util.algorithm.SortUtil; 1,;zX^  
_iq62[i3^  
/** |BZrV3;H  
* @author treeroot =+wd"Bu  
* @since 2006-2-2 jZkc yx  
* @version 1.0 i@5Fne  
*/ *-5N0K<kQ  
public class ShellSort implements SortUtil.Sort{ Q0K$ZWM`7  
.?QYqGcG  
/* (non-Javadoc) N2'aC} I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %>=6v} f,+  
*/ P[G>uA>Z1  
public void sort(int[] data) { #>bj6<  
for(int i=data.length/2;i>2;i/=2){ :EQ{7Op`  
for(int j=0;j insertSort(data,j,i); 7_ayn#;y  
} p)iEwl}!j  
} MomHSvQ\  
insertSort(data,0,1); 7pY :.iVO  
} hPNMp@Nm6  
#I453  
/** n}A!aC  
* @param data Mhti  
* @param j 300w\9fn&  
* @param i VSDua.  
*/ 2 HQ3G~U  
private void insertSort(int[] data, int start, int inc) { LYRpd  
int temp; HBOyiIm Q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D%yY&q;  
} h,m 90Hd+  
} r <5}& B`  
} 1VM2CgRa  
9!uiQ  
} kq5X<'MM9N  
P* `*^r3  
快速排序: 1,;X4/*  
jmk Ou5@  
package org.rut.util.algorithm.support; dV'EiNpf  
*QiQ,~Ep  
import org.rut.util.algorithm.SortUtil; rfEWh Vy(}  
f!#!  
/** / 'qoKof  
* @author treeroot 9)'f)60^  
* @since 2006-2-2 lh"*$.j-  
* @version 1.0 c'eZ-\d{  
*/ ]n|Jc_Y  
public class QuickSort implements SortUtil.Sort{ m:?"|.]  
(XVBH 1p"  
/* (non-Javadoc) oXnaL)Rk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eyyME c!  
*/ esnq/  
public void sort(int[] data) { 6ABK)m-y  
quickSort(data,0,data.length-1); :+PE1=v  
} ={ms@/e/T  
private void quickSort(int[] data,int i,int j){ (n*:LS=0  
int pivotIndex=(i+j)/2; p8!T) ?|  
file://swap A'KH_])  
SortUtil.swap(data,pivotIndex,j); \|S!g_30m  
[|KvlOvP  
int k=partition(data,i-1,j,data[j]); ?PT> V,&  
SortUtil.swap(data,k,j); @ps(3~?7  
if((k-i)>1) quickSort(data,i,k-1); {jz`K1  
if((j-k)>1) quickSort(data,k+1,j); bu]"?bc  
:HO5 T  
} z2uL[deN'"  
/** Fa )QDBz)  
* @param data *$<W"@%^J  
* @param i [^5;XD:%&l  
* @param j @9B*V~ <  
* @return \CMZ_%~wU  
*/ %A$&9c%  
private int partition(int[] data, int l, int r,int pivot) { O9sEaVX  
do{ \uJRjw+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rKrHd  
SortUtil.swap(data,l,r); ">oySo.B?  
} fu^W# "{  
while(l SortUtil.swap(data,l,r); CP~ZIIip"  
return l; HYfGu1j?X  
}  m[B#k$  
@vt.Db  
} 9RJF  
h)HEexyRg  
改进后的快速排序: Kgu8E:nL  
sCFxn  
package org.rut.util.algorithm.support; i3,IEN  
Mqr_w!8d  
import org.rut.util.algorithm.SortUtil; 3T2]V?   
@b,Az{EH  
/** 9 %T??-  
* @author treeroot Wb-C0^dTn  
* @since 2006-2-2 pd|KIs%jl  
* @version 1.0 Jay"  
*/  yfZNL?2x  
public class ImprovedQuickSort implements SortUtil.Sort { "o&8\KSs  
cs+3&T: ,*  
private static int MAX_STACK_SIZE=4096; eThaH0  
private static int THRESHOLD=10; $eYL|?P50h  
/* (non-Javadoc) KC6Cg?y^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 ~zjsi  
*/ lT|Gkm<G  
public void sort(int[] data) { ITn%  
int[] stack=new int[MAX_STACK_SIZE]; K oJ=0jM#  
ec&/a2M  
int top=-1; $a M5jH<  
int pivot; f4"UI-8;n  
int pivotIndex,l,r; :R Iz6Tz  
QrYF Lh  
stack[++top]=0; <q'l7 S  
stack[++top]=data.length-1; {%R^8  
*q=T1JY  
while(top>0){ f+h\RE=BGt  
int j=stack[top--]; ,CfslhO{j  
int i=stack[top--]; -]Z7^  
r/j:A#6M]o  
pivotIndex=(i+j)/2; bv[#|^/  
pivot=data[pivotIndex]; 9n& &`r  
8 "l PiW3  
SortUtil.swap(data,pivotIndex,j); m\6/:~qWW  
}/cReX,so  
file://partition h'y%TOob  
l=i-1; X-c|jn7  
r=j;  w4U,7%V  
do{ XQ#K1Z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0gd`W{YP  
SortUtil.swap(data,l,r); wFJf"@/vJ  
} 7~Y\qJ4b  
while(l SortUtil.swap(data,l,r); MCKN.f%lP  
SortUtil.swap(data,l,j); g#J` 7n  
7D6`1 &  
if((l-i)>THRESHOLD){ {&=+lr_h?  
stack[++top]=i; YB38K(  
stack[++top]=l-1; TN(Vzs%  
} $UR:j8C{p$  
if((j-l)>THRESHOLD){ ^_WR) F'K  
stack[++top]=l+1;  LR97FG  
stack[++top]=j; EeW ,-I  
} -S'KxC  
!5`MiH  
} .-d'*$ yJ  
file://new InsertSort().sort(data); xXe3E&  
insertSort(data); mZ+!8$1X  
} B9maz"lJ  
/** XO+BZB`F  
* @param data M/N8bIC! Q  
*/ vO}r(kNJ  
private void insertSort(int[] data) { PG&t~4QM`  
int temp; XF!L.'zH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JrzPDb`m  
} PCviQ!X  
} #e' >9T  
} m$T5lKn}U?  
}"D;?$R!  
} ?I}RX~Tgg  
fVbjU1N  
归并排序: $n\Pw  
]auvtm- [  
package org.rut.util.algorithm.support; b] 5weS-<  
R#T-o,m  
import org.rut.util.algorithm.SortUtil; >qeDb0  
|[SHpcq>  
/** 9@ k8$@  
* @author treeroot &dyQ6i$],  
* @since 2006-2-2 ,!#Am13  
* @version 1.0 Gv-VDRS  
*/ 586P~C[ic  
public class MergeSort implements SortUtil.Sort{ Qg4D*r\|@  
y )QLR<wf  
/* (non-Javadoc) `YNzcn0x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sdu\4;(  
*/ #])"1fk  
public void sort(int[] data) { z`{sD]  
int[] temp=new int[data.length]; `3;EJDEdbi  
mergeSort(data,temp,0,data.length-1); l6  G6H$  
}  LA3m,  
F>fCp  
private void mergeSort(int[] data,int[] temp,int l,int r){ w!F>fcm  
int mid=(l+r)/2; s<I)THC  
if(l==r) return ; AO-5>r  
mergeSort(data,temp,l,mid); IMf|/a9-  
mergeSort(data,temp,mid+1,r); 8 v/H;65  
for(int i=l;i<=r;i++){ msl.{  
temp=data; 6,>$Jzs)5E  
} A@A8xn%  
int i1=l; ;uBGB h<  
int i2=mid+1; w1/QnV  
for(int cur=l;cur<=r;cur++){ oD2:19M@p  
if(i1==mid+1) _{[6hf4p  
data[cur]=temp[i2++];  6}"%>9  
else if(i2>r) )+_Vx}O:}  
data[cur]=temp[i1++]; qG9a!sj   
else if(temp[i1] data[cur]=temp[i1++]; KF%BX ~80C  
else y;b#qUd5a  
data[cur]=temp[i2++]; m#_BF#  
} AyE*1 FD  
} @ {/)k%U  
"Z.6@ c7  
} p{Lrv%-j  
)z[C=  
改进后的归并排序: ,^/Wv!uPE  
ha :l-<a  
package org.rut.util.algorithm.support; =pL$*`]?  
Nq8ON!<<  
import org.rut.util.algorithm.SortUtil; (TZK~+]@sb  
"qmSwdM  
/** *C_A(n5"V  
* @author treeroot mskG2mA  
* @since 2006-2-2 4.O)/0sU  
* @version 1.0 XZE(& (s  
*/ G5}_NS/  
public class ImprovedMergeSort implements SortUtil.Sort { b}! cEJY  
)D8op;Fn  
private static final int THRESHOLD = 10; UmR)L!QT8  
8eXe b|?J  
/* XGa8tI[:X  
* (non-Javadoc) l.}PxZ  
* ,6^<Vg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `OW'AS |  
*/ Rhc:szDU  
public void sort(int[] data) { &[G)Y D  
int[] temp=new int[data.length]; H:.~! r  
mergeSort(data,temp,0,data.length-1); 2yfU]`qN  
} lNX*s E .  
}B0[S_mw  
private void mergeSort(int[] data, int[] temp, int l, int r) { <"3q5ic/Z  
int i, j, k; [jgVN w""D  
int mid = (l + r) / 2; UC`h o%OBF  
if (l == r) KL$.E!d  
return; >|3Y+X  
if ((mid - l) >= THRESHOLD) ?!RbS#QV}  
mergeSort(data, temp, l, mid); f^pBXz9&=  
else 7KgaXi3r  
insertSort(data, l, mid - l + 1); EQyX!  
if ((r - mid) > THRESHOLD) nCYz ];".  
mergeSort(data, temp, mid + 1, r); =xk>yw!O)  
else FGVw=G{r  
insertSort(data, mid + 1, r - mid); 72l:[5ccR  
}a"=K%b<\  
for (i = l; i <= mid; i++) { A$2 ;Bf  
temp = data; 64'2ICf#m  
} O=%Ht-kOc  
for (j = 1; j <= r - mid; j++) { ?`RlYu  
temp[r - j + 1] = data[j + mid]; /pF8S!,z  
} d+DO}=]  
int a = temp[l]; vu( 5s  
int b = temp[r]; A@?0(  
for (i = l, j = r, k = l; k <= r; k++) { @b(@`yz.a  
if (a < b) { h0F=5| B  
data[k] = temp[i++]; Z_ GGH2u  
a = temp; kFjv'[Y1N  
} else { dA<%4_WZty  
data[k] = temp[j--]; }83 8F&  
b = temp[j]; .$\-{)  
} 2J=`"6c  
} =%` s-[5b  
} xP\s^]e  
[8'?G5/n  
/** -mO#HZIq  
* @param data q^xG%YdPz+  
* @param l "M/c0`>C!i  
* @param i ';R]`vWFe  
*/ QGN+f)  
private void insertSort(int[] data, int start, int len) { 2TGND-(j  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -;cF)C--12  
} (BY 0b%^  
} lJ3VMYVrUP  
} @ lB{!j&q  
} A;8kC}  
jU-LT8y:  
堆排序: 3I 0pHP5  
q 4Pv\YO  
package org.rut.util.algorithm.support; / =9Y(v  
X3sAy(q  
import org.rut.util.algorithm.SortUtil; (Z<@dkO?)  
|&K;*g|a  
/** OV{v6,>O  
* @author treeroot :2j`NyLI.  
* @since 2006-2-2 RQ=rB9~:ZN  
* @version 1.0 U*+-#  
*/ 18X?CoM~  
public class HeapSort implements SortUtil.Sort{ h1S)B|~8  
(?Ko:0+*  
/* (non-Javadoc) Ucv7`W gr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h] ho? K  
*/ _#\Nw0{  
public void sort(int[] data) { lL zR5445)  
MaxHeap h=new MaxHeap(); < }K9 50  
h.init(data); {N]WVp*R  
for(int i=0;i h.remove(); :?~)P!/xl5  
System.arraycopy(h.queue,1,data,0,data.length); 8(`e\)%l0  
} $'l<2h>4  
?Tc|3U  
private static class MaxHeap{ rn . qs  
T[4xt,[a  
void init(int[] data){ (A=PDjP!  
this.queue=new int[data.length+1]; #pZeGI|'J  
for(int i=0;i queue[++size]=data; _1)n_P4  
fixUp(size); A@o7  
} .4]XR/I$  
} A$p&<#  
z#G\D5yX[*  
private int size=0; ~ AD>@;8fG  
Y nnK]N;\x  
private int[] queue; ;40Z/#FI  
f\5w@nX  
public int get() { 2<*"@Vj  
return queue[1]; od#Lad@p  
} XOX$uLm  
4x ?NCD=k  
public void remove() { ], Bafz)4  
SortUtil.swap(queue,1,size--); 2{RRaUoRb  
fixDown(1); ([<{RjPb  
} W?SAa7+  
file://fixdown I;}U/'RR>  
private void fixDown(int k) { ^+-QY\N j  
int j; Mx w-f4j  
while ((j = k << 1) <= size) { Qe F:s|[  
if (j < size %26amp;%26amp; queue[j] j++; Ak3^en  
if (queue[k]>queue[j]) file://不用交换 F4~ OsgZ'N  
break; cAN8'S(s1  
SortUtil.swap(queue,j,k); n',7=~  
k = j; wmV=GV8 d  
}  MMk9rBf  
} 2Bi]t%<{  
private void fixUp(int k) { i-w<5pGnf  
while (k > 1) { Q.9,W=<6  
int j = k >> 1; L+ew/I>:  
if (queue[j]>queue[k]) q5Zu'-Cx@  
break; 6Z1O:Bou  
SortUtil.swap(queue,j,k); `yq) y>_  
k = j; pS-o*!\C.  
} r;b`@ .  
} Y->sJm  
)0I -N)  
} +|;Ri68  
V|A.M-XLv4  
} t ^>07#z  
u gRyUny  
SortUtil: Q~"Lyy8  
/Q W^v;^  
package org.rut.util.algorithm; SeZ+&d  
el<Gd.p.d  
import org.rut.util.algorithm.support.BubbleSort; 1\Bh-tzB  
import org.rut.util.algorithm.support.HeapSort; auIW>0?}  
import org.rut.util.algorithm.support.ImprovedMergeSort; [ -Z 6QzT  
import org.rut.util.algorithm.support.ImprovedQuickSort; Z*P/ubV'  
import org.rut.util.algorithm.support.InsertSort; \1-lda  
import org.rut.util.algorithm.support.MergeSort; {R(/Usg!=  
import org.rut.util.algorithm.support.QuickSort; A' ![*O  
import org.rut.util.algorithm.support.SelectionSort; fN{wP,jI  
import org.rut.util.algorithm.support.ShellSort; }JOz,SQHP  
5O~xj:  
/** I;AS.y  
* @author treeroot ^x*J4jl  
* @since 2006-2-2 :9 &@/{W  
* @version 1.0 pHk$_t  
*/ 6`7`herE}  
public class SortUtil { _ \+0e:Ae  
public final static int INSERT = 1; ?mV2|;  
public final static int BUBBLE = 2; `r&Ui%fk;0  
public final static int SELECTION = 3; ~eTp( XG  
public final static int SHELL = 4; x!85P\sm  
public final static int QUICK = 5;  o4 "HE*  
public final static int IMPROVED_QUICK = 6; 1Z_]Ge<a  
public final static int MERGE = 7; .rg "(I  
public final static int IMPROVED_MERGE = 8; O>f*D+A-  
public final static int HEAP = 9; 4]zn,g?&  
902A,*qq  
public static void sort(int[] data) { EhD%  
sort(data, IMPROVED_QUICK); h`Ej>O7m  
} =|O]X|y-lZ  
private static String[] name={ >yenuqIKQv  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?N+pWdi  
}; _ZWU~38PM  
6V9r[,n  
private static Sort[] impl=new Sort[]{ IY~I=}  
new InsertSort(), }|-8- ;  
new BubbleSort(), B~Z61   
new SelectionSort(),  j AoI`J  
new ShellSort(), "AqLR  
new QuickSort(), `{yD\qDyX  
new ImprovedQuickSort(), +|oLS_  
new MergeSort(), e?XGv0^qu  
new ImprovedMergeSort(), &9Z@P[f  
new HeapSort() R))4J  
}; ~yngH0S$[b  
Zq: }SU  
public static String toString(int algorithm){ zb~;<:<  
return name[algorithm-1]; ^755 LW  
} ]We0 RD"+  
g C8 deC8  
public static void sort(int[] data, int algorithm) { S"+#=C  
impl[algorithm-1].sort(data); 7 mA3&<&q  
} *c.w:DkfB  
>)[W7h  
public static interface Sort { #RdcSrw)W!  
public void sort(int[] data); HWL? doM  
} 0|hOoO]?q&  
v-F|#4Q=ut  
public static void swap(int[] data, int i, int j) { E^w0X,0XlE  
int temp = data; 0ikA@SAq  
data = data[j]; : @gW3'  
data[j] = temp; e'v_eD T^  
} /lHs]) ,  
} <g&GIFE,  
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3+5=?,请输入中文答案:八 正确答案:八