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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。 !nP8ysB  
插入排序: S&4w`hdD>~  
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package org.rut.util.algorithm.support; kw*Cr/'*  
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import org.rut.util.algorithm.SortUtil; LM'*OtpDG  
/** $5q{vy  
* @author treeroot ?X8K$g  
* @since 2006-2-2 J@u!S~&r  
* @version 1.0 S>/I?(J  
*/ +1JZB* W  
public class InsertSort implements SortUtil.Sort{ hEdo,gF*  
Ymrpf  
/* (non-Javadoc) n:}MULy;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 30gZ_ 8C>}  
*/ C%x(`S^/  
public void sort(int[] data) { a=}">=]7  
int temp; ^)eessZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N7j]yvE  
} 7|{%CckN  
} ByB0>G''.  
} a9mr-`<  
T }8r;<P6  
} p ] $  
S`'uUvAA  
冒泡排序: Ggxrj'r  
%8z+R m,Ot  
package org.rut.util.algorithm.support; "6[Ax{cM  
KweHY,  
import org.rut.util.algorithm.SortUtil; LyCV_6;D  
R'1vjDuv  
/** -\sKSY5{R  
* @author treeroot O*+w_fox  
* @since 2006-2-2 ?(`nBlWQ5  
* @version 1.0 _If@#WnoyA  
*/ kBDe*K.V  
public class BubbleSort implements SortUtil.Sort{ Poylq] F  
=8VJ.{xy_e  
/* (non-Javadoc) o/i5e=9[y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >.k@!*  
*/ YA8yMh*4D?  
public void sort(int[] data) { V)@nRJg  
int temp; Wb}0-U{S'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ A)s"h=R  
if(data[j] SortUtil.swap(data,j,j-1); *YE IG#`  
} %]P@G^Bv  
} h} b^o*  
} 0ghwFo  
} Do{*cSd  
tM?I()Y&P  
} :67d>wb  
:,J86#S)  
选择排序: |L~gNC  
e[py J.  
package org.rut.util.algorithm.support; 5qODS_Eq  
D$^7Xhk  
import org.rut.util.algorithm.SortUtil; ve_4@J)  
*FG4!~<e  
/** \-`oFe"  
* @author treeroot !Vod0j">  
* @since 2006-2-2 jrMGc=KL  
* @version 1.0 ~9{-I{=  
*/ 2Dwt4V  
public class SelectionSort implements SortUtil.Sort { E%v[7 ST  
sO f)/19  
/* A$Jn3Xd~!  
* (non-Javadoc) c9_4 ohB  
* d+$[EDix  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =4%WOI  
*/ Wf&G9Be?8  
public void sort(int[] data) { fb S.  
int temp; (}7o a9Q<  
for (int i = 0; i < data.length; i++) { \FaB!7*~  
int lowIndex = i; 4j=@}!TBt  
for (int j = data.length - 1; j > i; j--) { B#/~U`t*  
if (data[j] < data[lowIndex]) { &hM,b!R|  
lowIndex = j; xBx?>nN  
} f"}14V  
} <3]/ms  
SortUtil.swap(data,i,lowIndex); b ffml  
} >Gu>T\jpe.  
} A<G ;  
V1+o3g{}  
} Gm?"7R.  
{7MgN'4  
Shell排序: ywa.cq  
]V[  
package org.rut.util.algorithm.support;  OG<]`!"  
ysP/@;jC  
import org.rut.util.algorithm.SortUtil; 4dD@lG~  
CEJG=*3  
/** -B++V  
* @author treeroot Z;> aW;Wt  
* @since 2006-2-2 BDm H^`V  
* @version 1.0 #| e5  
*/ K|' ]Hje\  
public class ShellSort implements SortUtil.Sort{ C&MqUj"]  
}v|[h[cZ  
/* (non-Javadoc) +Y%I0.?&5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^`C*";8Q  
*/ &wWGZ~T  
public void sort(int[] data) { {&AT}7  
for(int i=data.length/2;i>2;i/=2){ xN~<<PIZ  
for(int j=0;j insertSort(data,j,i); b|pNc'u:Cn  
} '1T v1  
} |Z)/  
insertSort(data,0,1); :$@zX]?M  
} Y~\xWYR  
Y(;[L`"  
/** KgkB)1s@n  
* @param data @RG3*3(  
* @param j 9~ .BH;ku  
* @param i &I">{J<  
*/ oGjYCVc  
private void insertSort(int[] data, int start, int inc) { Y&Nv>o_}5  
int temp; :.o0<  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); # T#FUI1p  
} hD~/6bx  
} hCx#Heh  
} ViC76aJ  
(TK cSVR  
} G37L 9IG-M  
R5YtCw]i=  
快速排序: Q0cf]  
xuC6EK+  
package org.rut.util.algorithm.support; G`<1>%" F  
53#5p;k  
import org.rut.util.algorithm.SortUtil; L?5t <`#lw  
iO#xIl<  
/** a\.?{/  
* @author treeroot ="*C&wB^  
* @since 2006-2-2 \fGYJ37  
* @version 1.0 JSP8Lu"n  
*/ 3uiitjA]  
public class QuickSort implements SortUtil.Sort{ 7PPsEU:rf  
&5CeRx7%  
/* (non-Javadoc) W;j)ux7jMY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1JY90l$ME  
*/ cF6@.)  
public void sort(int[] data) { @o.i2iG  
quickSort(data,0,data.length-1); .oOt(K +  
} }LVE^6zyk  
private void quickSort(int[] data,int i,int j){ WxI]Fcb<  
int pivotIndex=(i+j)/2; 60gn`s,,  
file://swap mTu9'/$(  
SortUtil.swap(data,pivotIndex,j); 5 BG&r*U  
"alO"x8t  
int k=partition(data,i-1,j,data[j]); JQv ZTwSI  
SortUtil.swap(data,k,j); Xrs~ove1V  
if((k-i)>1) quickSort(data,i,k-1); NQ{Z   
if((j-k)>1) quickSort(data,k+1,j); gnK!"!nL  
 0>J4O:k  
}  o?x|y   
/** W5yu`Br  
* @param data 9d|7#)a;  
* @param i gM:oP.  
* @param j 'r3}=z4Y  
* @return =|^W]2W$  
*/ Y\2>y"8>$x  
private int partition(int[] data, int l, int r,int pivot) { =<tEc+!T3  
do{ MZ[g|o!)v  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /60=N `i  
SortUtil.swap(data,l,r); >~r@*gml  
} !,WRXE&j  
while(l SortUtil.swap(data,l,r); n_ gB#L$  
return l; ZjID<5#  
} k3eN;3#&  
zm.sX~j  
} / S^m!{  
?-p aM5Q+  
改进后的快速排序: B_1u<00kg  
bpCe&*\6K  
package org.rut.util.algorithm.support; Z@Z`8M@Q,  
6:X\vw  
import org.rut.util.algorithm.SortUtil; iC\=U  
lJ2/xE]  
/** e 2&i  
* @author treeroot KAaeaiD  
* @since 2006-2-2 alD|-{Bf  
* @version 1.0 >}tG^)os  
*/ 6 6;O3g'  
public class ImprovedQuickSort implements SortUtil.Sort { R9HS%O6b6  
@Kb~!y@G  
private static int MAX_STACK_SIZE=4096; }tq9 /\  
private static int THRESHOLD=10; rkXSy g b  
/* (non-Javadoc) 3hjwwLKG$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _)\,6| #  
*/ ;0{*V5A  
public void sort(int[] data) { KPrxw }P  
int[] stack=new int[MAX_STACK_SIZE]; f4^_FK&  
`{;&Qcg6m  
int top=-1; IKj1{nZvDc  
int pivot; `2+52q<FO  
int pivotIndex,l,r; 'KrkC A  
cM Kh+r  
stack[++top]=0; 5Uz(Bi  
stack[++top]=data.length-1; Qc/J"<Lx  
J~6*d,Ry`  
while(top>0){ :36^^Wm  
int j=stack[top--]; <o`]wOrl  
int i=stack[top--]; ` &DiM@Sm  
;f*xOdi*k  
pivotIndex=(i+j)/2; ~Dh}E9E:  
pivot=data[pivotIndex]; |EA1+I.&x  
%ua5T9H Z  
SortUtil.swap(data,pivotIndex,j); =l{KYv  
[# H8Mb+7  
file://partition D]y.!D{l2  
l=i-1; 9a,CiH%@  
r=j; VUhu"h@w%  
do{ 2sq<"TlQXI  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C*zdHzMj  
SortUtil.swap(data,l,r); s_Gp +-  
} 6YbSzx` ?k  
while(l SortUtil.swap(data,l,r); I>|?B( F  
SortUtil.swap(data,l,j); j(N9%/4u  
5T*7HC[  
if((l-i)>THRESHOLD){ ,]' !2?  
stack[++top]=i; 53xq%  
stack[++top]=l-1; ;trR' ~  
} /pEki g7M  
if((j-l)>THRESHOLD){ $80/ub:R  
stack[++top]=l+1; Wb$bCR#?<  
stack[++top]=j; `UPmr50Wq  
} xEqrs6sR  
eZo%q,L  
} v-@@>?W-  
file://new InsertSort().sort(data); -JkO[ IF  
insertSort(data); 0}!lN{m?  
} .$;GVJ-:5  
/**  }2"k:-g  
* @param data nIT=/{oyi  
*/ *O2j<3CHf  
private void insertSort(int[] data) { n_Dhq(.  
int temp; ;anG F0x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,@MPzpH  
} [sRQd;+  
} 6IH^rSUSK  
} Z]CH8GS~<  
Fh;(1X75I  
} pDT6>2t  
$cedO']  
归并排序: v'=APl+_  
n9yxZu   
package org.rut.util.algorithm.support; ; o=mL_[  
Qw+">  
import org.rut.util.algorithm.SortUtil; I_Qnq4Sk(  
I Cs1=  
/** vhW '2<(  
* @author treeroot ?*0kQo'  
* @since 2006-2-2 N:.bnF(  
* @version 1.0 9yPB)&"EF  
*/ {,ljIhc,  
public class MergeSort implements SortUtil.Sort{ XhiC'.B_  
{DR+sE  
/* (non-Javadoc) 3lqhjA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9#7z jrB  
*/ ~gD'up@$/  
public void sort(int[] data) { .N2Yxty8>  
int[] temp=new int[data.length]; 7+bzCDKU  
mergeSort(data,temp,0,data.length-1); H?m2|.  
} 5;*C0m2%i  
k-/$8C  
private void mergeSort(int[] data,int[] temp,int l,int r){ xUUp ?]9y  
int mid=(l+r)/2; C}Q2UK-:  
if(l==r) return ; 2I  
mergeSort(data,temp,l,mid); L.'N'-BV  
mergeSort(data,temp,mid+1,r); l/5/|UE9  
for(int i=l;i<=r;i++){ qJsEKuOs  
temp=data; uQlVzN.?  
} {iRNnh   
int i1=l; _rv_-n]"o  
int i2=mid+1; ,&$Y2+  
for(int cur=l;cur<=r;cur++){ /(w5S',EL  
if(i1==mid+1) %WR  
data[cur]=temp[i2++]; %F7k| Na  
else if(i2>r) Yp8$0KK  
data[cur]=temp[i1++]; IM+PjYJ  
else if(temp[i1] data[cur]=temp[i1++]; ur|2FS7  
else hI yfF  
data[cur]=temp[i2++]; %k~=iDk@  
} iDA`pemmi&  
} \[BnAgsF  
E4Sp^,  
} AMr9rBd  
RB!g,u  
改进后的归并排序: Gu-Sv!4p  
*,(`%b[  
package org.rut.util.algorithm.support; NNT9\JRv_  
C^a~)r.h  
import org.rut.util.algorithm.SortUtil; MB)xL-jO  
2WoB;=  
/** `'/8ifKz  
* @author treeroot Z-p_hNb  
* @since 2006-2-2 \Z$*8z=  
* @version 1.0 n~h%K7 c  
*/ @AwH?7(b  
public class ImprovedMergeSort implements SortUtil.Sort { |7argk+  
j'W)Nyw$[  
private static final int THRESHOLD = 10; _> *"6  
KLk37IY2\  
/* JGtdbD?Fw  
* (non-Javadoc) z K&`&("4C  
* Je/R'QP^8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y<B| e91C  
*/ ^l9S5 {  
public void sort(int[] data) { <MYD`,$yu  
int[] temp=new int[data.length]; h(9K7  
mergeSort(data,temp,0,data.length-1); ?^hC|IR$  
} l}m@9 ~oC  
{MHr]A}X\  
private void mergeSort(int[] data, int[] temp, int l, int r) { )9*WmFc+#  
int i, j, k; *]LM2J  
int mid = (l + r) / 2; (efH>oY[  
if (l == r) 7-^d4P+|g  
return; Ne=D $o  
if ((mid - l) >= THRESHOLD) w$pv  
mergeSort(data, temp, l, mid); xN5}y3  
else j/sZ:Q  
insertSort(data, l, mid - l + 1); iZ{D_uxq  
if ((r - mid) > THRESHOLD) nPKj%g3h  
mergeSort(data, temp, mid + 1, r); A 9u9d\  
else #pIb:/2a_  
insertSort(data, mid + 1, r - mid); O_E[F E:+  
{AZW."?  
for (i = l; i <= mid; i++) { az w8BK  
temp = data; 51~:t[N|  
} @~"0|,6VC  
for (j = 1; j <= r - mid; j++) { /as1  
temp[r - j + 1] = data[j + mid]; P^ a$?  
} 4`i_ 4&TS  
int a = temp[l]; 3h4>edM  
int b = temp[r]; p%}oo#%J  
for (i = l, j = r, k = l; k <= r; k++) { ZY83, :<  
if (a < b) { *_ "j"{  
data[k] = temp[i++]; pvX\k X3}  
a = temp; 6 ,!]x>B  
} else { >Zr`9$i  
data[k] = temp[j--]; k @[Bx>  
b = temp[j]; q|S }5  
} mF "ctxE  
} ;&iQNXL  
} RsE+\)  
y'(;!5w  
/** K\uR=L7  
* @param data FsD}N k=m~  
* @param l P? >p+dM  
* @param i =ahD'*R^A  
*/ *b> ~L  
private void insertSort(int[] data, int start, int len) { X@ TQD  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )s!x)< d;  
} / JlUqC  
} I(C_}I>Wb  
} LNe- ]3wB  
} !dZC-U~  
d8av`m  
堆排序: z7NaW e  
f7mI\$CN  
package org.rut.util.algorithm.support; ^)X^Pcx  
*C$ W^u5h  
import org.rut.util.algorithm.SortUtil; Yk:\oM   
4\t9(_  
/** daaurT  
* @author treeroot p 5P<3(  
* @since 2006-2-2 Pj^6.f+  
* @version 1.0 a 6[bF  
*/ 'y@0P5[se  
public class HeapSort implements SortUtil.Sort{ 6%:N^B=%}  
z55P~p  
/* (non-Javadoc) ~/QzL.S;p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H Jwj,SL  
*/ |ONkRxr@!  
public void sort(int[] data) { &ceZu=*  
MaxHeap h=new MaxHeap(); Qd$d*mwg:  
h.init(data); PX+$Us  
for(int i=0;i h.remove(); z1s9[5  
System.arraycopy(h.queue,1,data,0,data.length); x#U?~6.6  
} WG9x_X&XJ  
o[_ {\  
private static class MaxHeap{ ?!b}Ir<1j  
UL(#B TK  
void init(int[] data){ $6R<)]6  
this.queue=new int[data.length+1]; |NL$? %I  
for(int i=0;i queue[++size]=data; jytfGE:  
fixUp(size); ZfS-W&6Z  
} iGM-#{5  
} YYN= `ST  
uYF_sf  
private int size=0; {~VgXkjsC  
>!?u8^C  
private int[] queue; +tl&Jjdm  
}]kzj0m  
public int get() { {l! [{  
return queue[1]; H>k=V<  
} !DXKn\aQf  
>{V]q*[/;Q  
public void remove() { BoXQBcG]w  
SortUtil.swap(queue,1,size--); ur"cku G!9  
fixDown(1); d.sxB}_O  
} C}%g(YRhb  
file://fixdown  ^~?VD  
private void fixDown(int k) { v:eVK!O  
int j; L=?Yc*vg  
while ((j = k << 1) <= size) { }m(u o T~  
if (j < size %26amp;%26amp; queue[j] j++; &*r YY\I  
if (queue[k]>queue[j]) file://不用交换 &?v^xAr?B  
break; +!CG'qyN>  
SortUtil.swap(queue,j,k); :(N3s9:vz  
k = j; x%5n&B  
} aOETmsw  
} mK fT4t  
private void fixUp(int k) { nz~3o  
while (k > 1) { = T!iM2  
int j = k >> 1; U8;k6WT|  
if (queue[j]>queue[k]) C([TolZ  
break; vQ$FMKz7  
SortUtil.swap(queue,j,k); ,a_\o&V  
k = j; z1*8 5?  
} *q\Ve)E}  
} FlttqQQdf  
/V^Gn;  
} >XM-xK-=  
}PUQvIGZZ&  
} m6bAvy]3<t  
[g`P(?  
SortUtil: ]`b/_LJN$F  
M1-n  
package org.rut.util.algorithm; Y7{IF X  
K]1A,Q  
import org.rut.util.algorithm.support.BubbleSort; mY+J ju1  
import org.rut.util.algorithm.support.HeapSort;  km|;T!  
import org.rut.util.algorithm.support.ImprovedMergeSort; GFB(c  
import org.rut.util.algorithm.support.ImprovedQuickSort; :D""c*  
import org.rut.util.algorithm.support.InsertSort; i]JD::P_H  
import org.rut.util.algorithm.support.MergeSort; c=0S]_  
import org.rut.util.algorithm.support.QuickSort; E.R,'Y;x  
import org.rut.util.algorithm.support.SelectionSort; RQ;pAO  
import org.rut.util.algorithm.support.ShellSort; KC[ql}JP  
D37N*9}  
/** f![?og)I%  
* @author treeroot sB"Oi|#lk  
* @since 2006-2-2 7jQOwzj  
* @version 1.0 ]6bh#N;.  
*/ ;`p+Vs8C  
public class SortUtil { |#^wYZO1U  
public final static int INSERT = 1; iimTr_TEt  
public final static int BUBBLE = 2; C4Z}WBS(  
public final static int SELECTION = 3; 9nN$%(EO5;  
public final static int SHELL = 4; _0 Qp[l-  
public final static int QUICK = 5; 2v\,sHw+-  
public final static int IMPROVED_QUICK = 6; Dp3&@M"^yY  
public final static int MERGE = 7; <lopk('7  
public final static int IMPROVED_MERGE = 8; P-o/ax  
public final static int HEAP = 9; B4Ko,=pg  
["TUSf]  
public static void sort(int[] data) { gdPv,p19L  
sort(data, IMPROVED_QUICK); R*|y:T,H  
} x1VBO.t=*  
private static String[] name={ d}2tqPya  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !<BJg3  
}; |`B*\\1  
^lud2x$O^C  
private static Sort[] impl=new Sort[]{ S:aAR*<6  
new InsertSort(), w\ 4;5.$  
new BubbleSort(), "%ou'\}  
new SelectionSort(), @-qS[bV  
new ShellSort(), VRV*\*~$  
new QuickSort(), 3M\~#>  
new ImprovedQuickSort(), @TBcVHy  
new MergeSort(), #bc$[%_  
new ImprovedMergeSort(), W5z<+8R  
new HeapSort() <#/r.}.x  
}; W6%\Zwav?)  
ur7sf$  
public static String toString(int algorithm){ "*UN\VV+s  
return name[algorithm-1]; LS;j]!CU  
} RdaAS{>Sk  
N1/)F k-z  
public static void sort(int[] data, int algorithm) { ldk (zAB.  
impl[algorithm-1].sort(data); <cS"oBh&u0  
} cetHpU ,  
UVa:~c$U4  
public static interface Sort { &.^(, pt  
public void sort(int[] data); utOATjB.z  
} *9T a0e*  
w{TZN{Y  
public static void swap(int[] data, int i, int j) { {x_SnZz&  
int temp = data; #@%DY*w]v  
data = data[j]; F/O5Z?C?  
data[j] = temp; &BTgISYi  
} i82sMN1jl7  
} 9BR/zQ2  
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