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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。 9IOGc}  
插入排序: hafECs  
7 {nl..`  
package org.rut.util.algorithm.support; y-<$bA[K~  
m6eFXP1U  
import org.rut.util.algorithm.SortUtil; gs-@hR.,s0  
/** !4pr{S  
* @author treeroot /bi6>GaC:E  
* @since 2006-2-2 To">DOt  
* @version 1.0 P!9;} &  
*/ $wgc vySx  
public class InsertSort implements SortUtil.Sort{ E0T&GR@.  
 ?;+^  
/* (non-Javadoc) ,FY-d$3)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y]<#%Fh  
*/ Wge ho  
public void sort(int[] data) { hRRkFz/0&  
int temp; O%prD}x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NA=#> f+U%  
} x!`b'U\  
} A1=_nt)5  
} =hPG_4#  
5^b i 7J  
} b h*^{  
PqVW'FYe  
冒泡排序: Y>G*'[U  
/ =-6:L  
package org.rut.util.algorithm.support; V0s,f .a  
8s~\iuk  
import org.rut.util.algorithm.SortUtil; Q%I#{+OT  
.<HC[ls  
/** 487YaioB$  
* @author treeroot g;l'VA3v  
* @since 2006-2-2 "bPCOJ[v9  
* @version 1.0 XzW7eO ,A  
*/ .uBO  
public class BubbleSort implements SortUtil.Sort{ rAM *\=  
u]P03B  
/* (non-Javadoc) hEWx.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0~qf-x  
*/ u0s'6=  
public void sort(int[] data) { m$,cH>E  
int temp;  WN$R[N  
for(int i=0;i for(int j=data.length-1;j>i;j--){ RZW$!tyI=  
if(data[j] SortUtil.swap(data,j,j-1); %3rTQ:X  
} r)OO&. P@j  
} '7t|I6$ow  
} 6k:y$,w  
} IKGTsA;  
tp%|AD"  
} `bzr_fJ  
I88Zrhw  
选择排序: KS b(R/T  
T<f2\q8Uo=  
package org.rut.util.algorithm.support; i3D<`\;r  
R!@|6=]iG  
import org.rut.util.algorithm.SortUtil; ;]{{)dst  
Wx}M1&d/J  
/** RzpC1nd  
* @author treeroot s fyBw  
* @since 2006-2-2 Mm "Wk  
* @version 1.0 |3 ;u"&(P  
*/ ]/LWrQD  
public class SelectionSort implements SortUtil.Sort { \{[D|_   
bo&\3  
/* {,i=>%X*  
* (non-Javadoc) C%0<1 mp  
* sS-W~u|C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /%62X{=>;  
*/ a#^_"GX  
public void sort(int[] data) { *e%Dg{_  
int temp; M8\G>0Hc6  
for (int i = 0; i < data.length; i++) { 'G<}U343=8  
int lowIndex = i; >~h>#{&  
for (int j = data.length - 1; j > i; j--) { L^3~gM"!  
if (data[j] < data[lowIndex]) { 3b+7^0frY#  
lowIndex = j; PP!l  
} ,wEM Jh  
} Tku /OG'  
SortUtil.swap(data,i,lowIndex); 1po"gVot  
} 9!5b2!JL  
} Lwp-2`%  
Hr /W6C  
} 1a5?)D  
{An8/"bv}  
Shell排序: lr`?yn1D(  
r4 9UJE  
package org.rut.util.algorithm.support; ?6 8$3;  
wDB)&b  
import org.rut.util.algorithm.SortUtil; /z/hUa  
*Hx j_  
/** \nC5 ,Rz  
* @author treeroot uFGv%W  
* @since 2006-2-2 W"W@WG9X0  
* @version 1.0 BO8%:/37[4  
*/ cC b>zI  
public class ShellSort implements SortUtil.Sort{ ;>inT7?3|  
9@( O\xr  
/* (non-Javadoc) 5tN%a>D%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bh\ [ CY  
*/ g!p+rq_f  
public void sort(int[] data) { sVE>=0TVP  
for(int i=data.length/2;i>2;i/=2){ Z~duJsH  
for(int j=0;j insertSort(data,j,i); %|# P&`  
} 2ZU@>W  
} ''$`;?t>  
insertSort(data,0,1); L v  
} 'Y hA  
G A'*58  
/** h |s*i  
* @param data R'vdk<  
* @param j 3js)niT9u  
* @param i E^oEG4 X@  
*/ 3Qqnw{*  
private void insertSort(int[] data, int start, int inc) { -X`~;=m>U  
int temp; Bx\#`Y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }W- K  
} d 8xk&za  
} :jZ*,d%1={  
} X4Pm)N `  
Iu)L3_+  
} 9c"0~7v  
cFRSd }p=  
快速排序: ~+nS)4 (  
 <'g0il  
package org.rut.util.algorithm.support; V->.|[J  
zb@L)%  
import org.rut.util.algorithm.SortUtil; RH<@c^ S  
j)6@q@P/  
/** /uy&2l  
* @author treeroot @#bBs9@gv  
* @since 2006-2-2 [37f#p  
* @version 1.0 w k-Mu\  
*/ N2[, aU  
public class QuickSort implements SortUtil.Sort{ L~^e\^sP  
1.hOE>A%  
/* (non-Javadoc) +9<,3IJe6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0-8ELX[#  
*/ ~*66 3pA  
public void sort(int[] data) { |usnY  
quickSort(data,0,data.length-1); @)aXNQY  
} (Q}PeKM?jq  
private void quickSort(int[] data,int i,int j){ H=JP3ID>{  
int pivotIndex=(i+j)/2; ^% ~Et>C  
file://swap 3&.TU5]`-  
SortUtil.swap(data,pivotIndex,j); <wIp$F.  
6LSPPMM  
int k=partition(data,i-1,j,data[j]); \_iH4<#>  
SortUtil.swap(data,k,j); 7VEt4  
if((k-i)>1) quickSort(data,i,k-1); Ig40#pA  
if((j-k)>1) quickSort(data,k+1,j); E'S<L|A/  
8.Pcr<  
} eLHa9R{)B  
/** D6C -x  
* @param data Pur"9jHa4  
* @param i Hl%+F 0^?  
* @param j Wh#_9);  
* @return y>)mSl@1y  
*/ w3>Y7vxiz`  
private int partition(int[] data, int l, int r,int pivot) { ,gFL Wb`B'  
do{ HB/ _O22  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &%_y6}xIw  
SortUtil.swap(data,l,r); "Qiq/"h  
} #C;#$|d  
while(l SortUtil.swap(data,l,r); 2:smt)f  
return l; pl1EJ <  
} Z'*G'/*  
M]8eW  
} |-SI(Khjk  
jzu l{'g  
改进后的快速排序: z1}tC\9'%  
b&U5VA0=1  
package org.rut.util.algorithm.support; @&am!+z  
aT`02X   
import org.rut.util.algorithm.SortUtil; |Oj,S|Z:  
t<KEx^gb  
/** EkfGw/WDw  
* @author treeroot ^c;skV&S  
* @since 2006-2-2 (HTk;vbZm  
* @version 1.0 %k1q4qOG]^  
*/ iTKG,$G  
public class ImprovedQuickSort implements SortUtil.Sort { ?kT~)k  
IdQwLt  
private static int MAX_STACK_SIZE=4096; NO0[`jy(  
private static int THRESHOLD=10; ey9fbS ^I  
/* (non-Javadoc) !0d9<SVC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) he#Tr'j  
*/ OTy 4"%  
public void sort(int[] data) { { V =:O  
int[] stack=new int[MAX_STACK_SIZE]; *;\ K5  
0X S' v,|  
int top=-1; z9uEOX&2\  
int pivot; Eo25ir%  
int pivotIndex,l,r; nvUkbmZG#  
=8VJ.{xy_e  
stack[++top]=0; o/i5e=9[y  
stack[++top]=data.length-1; 5 \.TZMB  
N2S!.H!Wz  
while(top>0){ eog,EP"a8Y  
int j=stack[top--]; I5|S8d<  
int i=stack[top--]; BT*K,p  
'nmYB:&!  
pivotIndex=(i+j)/2; *}Ae9  
pivot=data[pivotIndex]; +Fy- ~Mq  
]i_):@  
SortUtil.swap(data,pivotIndex,j); <R]Wy}2-  
$F /p8AraK  
file://partition Y GcY2p<  
l=i-1; !513rNO  
r=j; Wpg?%+Y  
do{ Z?G 3d(YT  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 01SFOPuR%(  
SortUtil.swap(data,l,r); ;j Y'z5PH5  
} wtgO;w  
while(l SortUtil.swap(data,l,r); \`<s@U  
SortUtil.swap(data,l,j); Liz 6ob  
A=2nj  
if((l-i)>THRESHOLD){ TTw~.x,  
stack[++top]=i;  }@Ll!,  
stack[++top]=l-1; A.'`FtV  
} hTNYjXj  
if((j-l)>THRESHOLD){ 7UEy L }N  
stack[++top]=l+1; 1J!tcj1(  
stack[++top]=j; 5G]#'tu  
} {(zL"g46  
|SJ% _#=i  
} C*6bR? I9  
file://new InsertSort().sort(data); YM4U.! 4o  
insertSort(data); %y^ Kw  
} })=c:h &  
/** s-YV_  
* @param data _o=`-iy9  
*/ \2LA%ZU  
private void insertSort(int[] data) { ^!s}2GcS`  
int temp; daokiU+l2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?_h#>  
} FL_ arhrqD  
} \Jj'60L^  
} bKTwG@{/k  
)8A=yrTIT  
} A<G ;  
V1+o3g{}  
归并排序: EXM/>PG  
{7MgN'4  
package org.rut.util.algorithm.support; ywa.cq  
eC1c`@C:  
import org.rut.util.algorithm.SortUtil; EPUJa~4  
[7t0[U~3?  
/** <a/ZOuBzZ  
* @author treeroot ;{)@ghD  
* @since 2006-2-2 :WKyEt!3  
* @version 1.0 ,C12SM*@  
*/ (V |q\XS  
public class MergeSort implements SortUtil.Sort{ Yv`1ySR  
]H@uuPT!  
/* (non-Javadoc) 98%a)s)(a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q,LWZw~"  
*/ '&L   
public void sort(int[] data) { [>QsMUvak  
int[] temp=new int[data.length]; cF>;f(X  
mergeSort(data,temp,0,data.length-1); &G5I0:a   
} @eD~FNf-]  
C@:N5},]  
private void mergeSort(int[] data,int[] temp,int l,int r){ s_e#y{ {C2  
int mid=(l+r)/2; X]qp~:4G  
if(l==r) return ; kO\&mL& qD  
mergeSort(data,temp,l,mid); kTe<1^,m  
mergeSort(data,temp,mid+1,r); 'bqf?3W  
for(int i=l;i<=r;i++){ #cg@Z  
temp=data; 7!d<>_oH  
} 6b 5{  
int i1=l; ^L2Zo'y [  
int i2=mid+1; ="PywZ  
for(int cur=l;cur<=r;cur++){ Lm2cW$s  
if(i1==mid+1) 3n"&$q6  
data[cur]=temp[i2++]; j1C0LP8  
else if(i2>r) g&20F`.N*>  
data[cur]=temp[i1++]; ~#xs `@{s  
else if(temp[i1] data[cur]=temp[i1++]; ^K@ GK  
else R5YtCw]i=  
data[cur]=temp[i2++]; 5Szo5  
} 6Yi,%#  
} ZkG##Jp\>  
4 w  
} SodW5v a  
ToCfLJ?{  
改进后的归并排序: YH6 K-}  
pF{Ri  
package org.rut.util.algorithm.support; Z|7I }i  
m*WEge*$t  
import org.rut.util.algorithm.SortUtil; p{_ O*bo  
&5CeRx7%  
/** ]$X=~>w  
* @author treeroot . *+7xL  
* @since 2006-2-2 bJu,R-f  
* @version 1.0 TuPxyB  
*/ u(Q(UuI  
public class ImprovedMergeSort implements SortUtil.Sort { ).6/ii9gt  
l@2`f#y1~<  
private static final int THRESHOLD = 10; lJpv  
7VD7di=D  
/* +.Ukzu~s  
* (non-Javadoc) P>cJ~F M  
* Lgw@y!Llij  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kxiyF$ 9  
*/ (W6\%H2u  
public void sort(int[] data) { H0:6zSsc=|  
int[] temp=new int[data.length]; Kd21:|!t^  
mergeSort(data,temp,0,data.length-1); ojI"<Q~g  
} V'#u_`x"D)  
l`G:@}P>G  
private void mergeSort(int[] data, int[] temp, int l, int r) { r/w@Dh]{_  
int i, j, k; T{kwy3  
int mid = (l + r) / 2; B3=/iOb#  
if (l == r) lY8Qy2k|  
return;    r3K:  
if ((mid - l) >= THRESHOLD) *8HxJ+[,[  
mergeSort(data, temp, l, mid); 57%cN-v*  
else ",oUVl  
insertSort(data, l, mid - l + 1); X=}0+W  
if ((r - mid) > THRESHOLD) @)Y7GM+^  
mergeSort(data, temp, mid + 1, r); 0L-g'^nn  
else k3eN;3#&  
insertSort(data, mid + 1, r - mid); zm.sX~j  
U*l>8  
for (i = l; i <= mid; i++) { Xm+3`$<  
temp = data; ` R-np_  
} Rla*hc~  
for (j = 1; j <= r - mid; j++) { `t"Kq+  
temp[r - j + 1] = data[j + mid]; &cejy>K  
} =I3U.^ :  
int a = temp[l]; BuO J0$  
int b = temp[r]; ^@cX0_  
for (i = l, j = r, k = l; k <= r; k++) { 9%veUvY  
if (a < b) { %zVv3p:  
data[k] = temp[i++]; y 9mZQq  
a = temp; ago t (  
} else { -i gZU>0B_  
data[k] = temp[j--]; B(NL3WJ  
b = temp[j]; p 8rAtz>=J  
} +OP'/  
} 3hjwwLKG$  
} _)\,6| #  
gpl!Iz~5  
/** cSWVHr  
* @param data CawVC*b3  
* @param l X~b+LG/  
* @param i 8hV:bz"  
*/ 7hE=+V8  
private void insertSort(int[] data, int start, int len) { W u{nC  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'v5gg2  
} mSp7H!  
} ?NeB_<dLa`  
} {[#  
} !7|9r$  
%^A++Z$`  
堆排序: ~Dh}E9E:  
|EA1+I.&x  
package org.rut.util.algorithm.support; %ua5T9H Z  
$^GnY7$!>  
import org.rut.util.algorithm.SortUtil; 8`<GplO  
<FLc0s  
/** ~)(Dm+vZ  
* @author treeroot q|\Cp  
* @since 2006-2-2 [X\2U4  
* @version 1.0 b&&'b )  
*/ w%na n=  
public class HeapSort implements SortUtil.Sort{ cE?J]5#^  
yx4c+(J^8  
/* (non-Javadoc) cV,URUD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `_kRvpi  
*/ 5T*7HC[  
public void sort(int[] data) { ]C^*C|  
MaxHeap h=new MaxHeap(); yIP IA%dJ  
h.init(data); 6FAP *V;  
for(int i=0;i h.remove(); /zAx`H  
System.arraycopy(h.queue,1,data,0,data.length); \|s/_35(  
} :a`m9s 4  
HRh".!lxy  
private static class MaxHeap{ o$;x[US  
6jA Q  
void init(int[] data){ 4Yk (ldR~  
this.queue=new int[data.length+1]; OC.@C}u  
for(int i=0;i queue[++size]=data; M1\/ueOe  
fixUp(size); cQb%bmBc5  
} h<q``hn>  
} T!r7RS  
T9yW# .  
private int size=0; %UhF=C  
G3n7x?4m  
private int[] queue; s"Wdbw(O'  
jiDYPYx;I  
public int get() { Nq3P?I(<  
return queue[1]; 6=D;K.!  
} 3._fbAN%e  
0SYkDI  
public void remove() { C7:Ry)8'I  
SortUtil.swap(queue,1,size--); 0>Nq$/!  
fixDown(1); iddT.   
} $cedO']  
file://fixdown v'=APl+_  
private void fixDown(int k) { )i>KgX  
int j; BGS6uV4^>  
while ((j = k << 1) <= size) { ~b/>TKn+  
if (j < size %26amp;%26amp; queue[j] j++; mB`r6'#=  
if (queue[k]>queue[j]) file://不用交换 &,xM;8b  
break; 7v_e"[s~  
SortUtil.swap(queue,j,k); A>k;o0r  
k = j; 1lM0pl6M  
} oB@C-(M  
} h !1c(UR  
private void fixUp(int k) { {I ,'  
while (k > 1) { g*uO IF  
int j = k >> 1; 1d6pQ9 N  
if (queue[j]>queue[k]) |ouk;r24V  
break; Uw!v=n3#!  
SortUtil.swap(queue,j,k); 7+bzCDKU  
k = j; |iI`p-L9  
} TMrmyvv  
}  '}=M~  
5s9~rm  
} qZ.\GHS  
g& Rk}/F  
} fi)ypv*  
$Z4p$o dk  
SortUtil: h kY E7  
Fu$otMw%l  
package org.rut.util.algorithm; B(5g&+{Lq~  
h2nyP  
import org.rut.util.algorithm.support.BubbleSort; |qD<h  
import org.rut.util.algorithm.support.HeapSort; s.U p<Rw  
import org.rut.util.algorithm.support.ImprovedMergeSort; @{G(.S  
import org.rut.util.algorithm.support.ImprovedQuickSort; l;ugrAo?  
import org.rut.util.algorithm.support.InsertSort; !ibp/:x  
import org.rut.util.algorithm.support.MergeSort; e;$s{CNo  
import org.rut.util.algorithm.support.QuickSort; 4{_5z7ody  
import org.rut.util.algorithm.support.SelectionSort; *MNY1+RJ  
import org.rut.util.algorithm.support.ShellSort; D {mu2'q  
#"|Ey6&  
/** cVMTT]cj1  
* @author treeroot 3 V<8  
* @since 2006-2-2 jB;+tDC!Co  
* @version 1.0 %A Fy{l  
*/ R?(j#bk  
public class SortUtil { GUxhCoxb  
public final static int INSERT = 1; 6ZE] 7~X  
public final static int BUBBLE = 2; N78Ev7PN  
public final static int SELECTION = 3; )L?Tq"hy  
public final static int SHELL = 4; Z=xrj E  
public final static int QUICK = 5; |[ge ,MO:  
public final static int IMPROVED_QUICK = 6; c=5$bo]LI  
public final static int MERGE = 7; C,E 5/XW  
public final static int IMPROVED_MERGE = 8; :MpCj<<[  
public final static int HEAP = 9; n1ICW 9  
@'QBrE  
public static void sort(int[] data) { 7Vi[I< *  
sort(data, IMPROVED_QUICK); XxGm,A+>Ty  
} bFpwq#PDW>  
private static String[] name={ rr*IIG&.5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E4{8 $:q=  
}; \,WPFV  
GM5::M]fS  
private static Sort[] impl=new Sort[]{ mxIEg?r(  
new InsertSort(), #KIHq2:.4  
new BubbleSort(), `c icjA@~  
new SelectionSort(), b#b#r  
new ShellSort(), b% F|V G  
new QuickSort(), 5 Z@Q ^  
new ImprovedQuickSort(), !@Ox%vK  
new MergeSort(), T|u)5ww%  
new ImprovedMergeSort(), {0|^F!1z  
new HeapSort() w/&#UsEIr  
}; +mY(6|1  
p(Sfw>t(  
public static String toString(int algorithm){ FY'f{gD^  
return name[algorithm-1]; 7}Gy%SJ`  
} |Qm 7x[i  
YRK4l\_`  
public static void sort(int[] data, int algorithm) { =hA/;  
impl[algorithm-1].sort(data); 7"gy\_M  
} t((0]j^  
vm(% u!_P  
public static interface Sort { Co'dZd(  
public void sort(int[] data); A9"ho}<  
} -kJ`gdS  
8?PNyO-Wt5  
public static void swap(int[] data, int i, int j) { gw H6r3=y(  
int temp = data; =0Nd\  
data = data[j]; 'b-}KDP  
data[j] = temp; ]8RcZn  
} {h2D}F  
} J~= =<?j:  
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