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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。 X.Kxio $o  
插入排序: h/ic-iH(>  
f,*e?9@;s  
package org.rut.util.algorithm.support; y|ZJ-[qg  
?(N(8)G1  
import org.rut.util.algorithm.SortUtil; j*nCIxF  
/** ~QXNOtVsN  
* @author treeroot l8Ox]%F  
* @since 2006-2-2 p /:L;5F  
* @version 1.0 ;2^=#7I?  
*/ _G42|lA$/  
public class InsertSort implements SortUtil.Sort{ UNJ|J$T]  
<?eZ9eB  
/* (non-Javadoc) 4*]`s|fbu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;lldxS  
*/ >:Ec   
public void sort(int[] data) { -J:vYhq|g  
int temp; &o(? }W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %3cBh v[q4  
} gi8kYHldH  
} <W1!n$V ]  
} hH~Z hB  
7)YU ;  
} EC7o 3LoND  
\y=,=;yv  
冒泡排序: e_e|t>nQ  
'ga@=;Wj  
package org.rut.util.algorithm.support; KMv|;yXYj4  
iJAW| dw}  
import org.rut.util.algorithm.SortUtil; ^,50]uX_  
@/~41\=e  
/** qe0@tKim  
* @author treeroot {=kA8U  
* @since 2006-2-2 ITTC}  
* @version 1.0 !&X}? NK  
*/ L/shF}<  
public class BubbleSort implements SortUtil.Sort{ +] uY  
a)xN(xp##  
/* (non-Javadoc) ,PnEDQ|l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {.sF&(e   
*/ zOcMc{w0   
public void sort(int[] data) { /bVI'fT  
int temp; }'3V(;9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'del|"h!M  
if(data[j] SortUtil.swap(data,j,j-1); i/->g:47P  
} umj7-fh  
} v/)dsSNZ0u  
} 6@ + >UZr\  
} r$+9grm<  
b'G4KNW  
} 6SpkeXL  
5s0H4?S  
选择排序: X"R;/tZ S4  
3Vhm$y%Td  
package org.rut.util.algorithm.support; joa$Y6  
h/X),aK3  
import org.rut.util.algorithm.SortUtil; -y~JNDS1]  
}[1I_)  
/** j1g^Q$B>m  
* @author treeroot y|X[NSA  
* @since 2006-2-2 7XZ!UC;i  
* @version 1.0 lA{Sr0f TP  
*/ Tf+B<B:  
public class SelectionSort implements SortUtil.Sort { &iuc4"'  
,Ti#g8j  
/* .NabK  
* (non-Javadoc) V&gUxS]*  
* :Y"f .>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4ed( DSN  
*/ qsJo)SA  
public void sort(int[] data) { \2T@]!n  
int temp; @wB$qd;v  
for (int i = 0; i < data.length; i++) { % Dya-  
int lowIndex = i; K }r%OOn0  
for (int j = data.length - 1; j > i; j--) { Ek84yme#  
if (data[j] < data[lowIndex]) { X)Kd'6zg  
lowIndex = j; -~jM=f$  
} e-Eoe_k  
} G.9?ApG9  
SortUtil.swap(data,i,lowIndex); @]~\H-8  
} "# JRw  
} Pocm.  
DBOz<|  
} .@R{T3 =Q  
$g*|h G/{  
Shell排序: 2;A].5>l  
,]>Eg6B,u  
package org.rut.util.algorithm.support; nF05p2Mh  
{>Zc#U'  
import org.rut.util.algorithm.SortUtil; ]zu" x9-`  
Z$T1nm%lo:  
/** ;]|Z8#s  
* @author treeroot )t =Cj?5  
* @since 2006-2-2 2 3 P7~S  
* @version 1.0 JGJQ5zt  
*/ @>JO &,od  
public class ShellSort implements SortUtil.Sort{ R}*e%EG/  
%3Y&D]  
/* (non-Javadoc) .aF+>#V=Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s fazrz`h  
*/ #;H+Kb5O  
public void sort(int[] data) { >Efv?8$E\  
for(int i=data.length/2;i>2;i/=2){ 7\5;;23N4  
for(int j=0;j insertSort(data,j,i); =d`,W9D  
} p9Ks=\yvL  
} :o=[Zp~B4d  
insertSort(data,0,1); C";F's)  
} Qu!Lc:oM?  
nKch _Jb  
/** 8LB+}N(8f  
* @param data |eJ4"OPC  
* @param j M&xfQNE   
* @param i m>~%. (/x  
*/ *l^h;RSx  
private void insertSort(int[] data, int start, int inc) { <$_B J2Z  
int temp; ]7Tjt A.\q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Wn<3|`c  
} ,qyH B2v  
} y$7<ZBG  
} 9)'L,Xt4:T  
m8fxDepFA  
} UV$v:>K#  
0d~>zKho  
快速排序: 5nQ*%u\$Z  
@MS;qoc  
package org.rut.util.algorithm.support; V`=#j[gX)=  
h]&8hl_'m  
import org.rut.util.algorithm.SortUtil; |lrLTI^a  
B<x)^[<v  
/** k~h'`(  
* @author treeroot A2!7a}*1(  
* @since 2006-2-2 \-gZ_>)  
* @version 1.0 1W;q(#q  
*/ 4l560Fb'U  
public class QuickSort implements SortUtil.Sort{ L@XhgQ  
b&. o9PV"  
/* (non-Javadoc) /X {:~*.z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6MqJy6  
*/ C|8.$s<  
public void sort(int[] data) { J[ du>1D  
quickSort(data,0,data.length-1); s9?klJg  
} a=T_I1  
private void quickSort(int[] data,int i,int j){ aovRm|aOo'  
int pivotIndex=(i+j)/2; ]G#og)z4  
file://swap t?iCq1  
SortUtil.swap(data,pivotIndex,j); v=$v*W  
]z;%%'gW6  
int k=partition(data,i-1,j,data[j]); "JT R5;`w  
SortUtil.swap(data,k,j); ggIz) </  
if((k-i)>1) quickSort(data,i,k-1); uAwT)km {  
if((j-k)>1) quickSort(data,k+1,j); );'8*e'  
C A VqjT7  
} fE8/tx](  
/** iZ yhj%#  
* @param data LcI,Dy|P  
* @param i 76(-!Z@=J  
* @param j ayTEQS  
* @return R&PQU/t)  
*/ 4Bsx[~ u&  
private int partition(int[] data, int l, int r,int pivot) { 8xW_N"P.>  
do{ B0T[[%~3M  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :$lx]  
SortUtil.swap(data,l,r); )<nr;n  
} !c(B c^  
while(l SortUtil.swap(data,l,r); 89?$xm_m  
return l; *+{umfZy  
} aOFF"(]Cl  
|t5K!?{i  
} Y<0 [_+(  
LS}dt?78`V  
改进后的快速排序: /:iO:g1  
VQI  
package org.rut.util.algorithm.support; 9 N[k ?kUZ  
c$ya{]a  
import org.rut.util.algorithm.SortUtil; `}Ssc-A  
RoFy2A=_  
/** }J$Q  
* @author treeroot x'tYf^Va28  
* @since 2006-2-2 D7T(B=S6  
* @version 1.0 bX23F?  
*/ \#Ez["mD  
public class ImprovedQuickSort implements SortUtil.Sort { t:X\`.W  
]{;=<t6  
private static int MAX_STACK_SIZE=4096; ?{ns1nW:  
private static int THRESHOLD=10; I'%vN^e^  
/* (non-Javadoc) qc;9{$?xV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &_n~#Mex  
*/ l$=Y(Xk  
public void sort(int[] data) { f^\qDvPur  
int[] stack=new int[MAX_STACK_SIZE]; Q5b~5a  
O RAKg.49  
int top=-1; of!Bz  
int pivot; SO^:6GuJ  
int pivotIndex,l,r; o*& D;  
^kA^> vi  
stack[++top]=0; :f<3`x'  
stack[++top]=data.length-1; ]U.1z  
Au(zvgP  
while(top>0){ 8(J&_7u  
int j=stack[top--]; \x\_I1|  
int i=stack[top--];  *(5y;1KU  
p}_n :a  
pivotIndex=(i+j)/2; ~Q}JC3f>  
pivot=data[pivotIndex]; rw/WD(  
x2/L`q"M?=  
SortUtil.swap(data,pivotIndex,j); ?4vf 2n@  
d#6'dKV$  
file://partition UT!gAU  
l=i-1; 8:E)GhX  
r=j; $Kw)BnV  
do{ R1u1  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qP@d)XRQ  
SortUtil.swap(data,l,r); mv_N ns  
} ,*ZdM w!  
while(l SortUtil.swap(data,l,r); #/!fLU@  
SortUtil.swap(data,l,j); !.9pV.~  
}#va#Nb(,  
if((l-i)>THRESHOLD){ #-?C{$2I  
stack[++top]=i; ^|-*amh  
stack[++top]=l-1; X=$WsfN.h  
} UZ#Yd|'PD  
if((j-l)>THRESHOLD){ F=)9z+l#  
stack[++top]=l+1; Ln-/ 9'^  
stack[++top]=j; ~H"Q5Hr   
} m!{Xuy  
M5DQ{d<r  
}  mkH {%7n  
file://new InsertSort().sort(data); O/b~TVA  
insertSort(data); g$+u;ER5  
} A<-Prvryt  
/** +iKs)s_~  
* @param data r;m_@*]  
*/ V8AF;1c?-'  
private void insertSort(int[] data) { CZaUrr  
int temp; evOy Tvc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r,F~Vwa}  
} I!'PvIyO  
} AfAg#75q  
} <Th) &  
{v{qPYNyh  
} "f/91gIzm'  
 }NX9"}/  
归并排序: 4JF)w;X}  
mHcxK@qw  
package org.rut.util.algorithm.support; e`gOc*  
|Yq0zc!  
import org.rut.util.algorithm.SortUtil; C/AqAW1  
;\~{79c  
/** =fk+"!-i%"  
* @author treeroot iEd%8 F h  
* @since 2006-2-2 W[B%,Km%]  
* @version 1.0 m?LnO5Vs  
*/ i"|="O0v5  
public class MergeSort implements SortUtil.Sort{ kT|{5Kn&s  
%tx~CD  
/* (non-Javadoc) ?M2#fD]e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _m3}0q  
*/ /B>p.%M[&  
public void sort(int[] data) { 8$Igo$U-  
int[] temp=new int[data.length]; FCO5SX#-g  
mergeSort(data,temp,0,data.length-1); 7+^9"k7  
} cspO5S>#  
8I=n9Uyz  
private void mergeSort(int[] data,int[] temp,int l,int r){ bpq2TgFj  
int mid=(l+r)/2; o#(z*v@  
if(l==r) return ; ki/xo^Y2<  
mergeSort(data,temp,l,mid); ERSo&8  
mergeSort(data,temp,mid+1,r); s-^B)0T!  
for(int i=l;i<=r;i++){ 88c-K{} 3  
temp=data; 2 de[ yz  
} Vq[L4  
int i1=l; GJlkEWs  
int i2=mid+1; %4X#|22n  
for(int cur=l;cur<=r;cur++){ ;uw`6 KJ  
if(i1==mid+1) o)w8 ]H /  
data[cur]=temp[i2++]; _3_d;j#G U  
else if(i2>r) rKZ1 c,y  
data[cur]=temp[i1++]; Bl,rvk2  
else if(temp[i1] data[cur]=temp[i1++]; Twscc"mK  
else c*0pF=3  
data[cur]=temp[i2++]; T(UdV]~]"  
} -mD<8v[F  
} f5)4H  
cW+6Emh  
} HEZgHL  
Be?b| G!M  
改进后的归并排序: $|0_[~0-n  
;^QG>OP$  
package org.rut.util.algorithm.support; j1{ @?  
bcgh}D  
import org.rut.util.algorithm.SortUtil; OC)~psQK  
"6.JpUf  
/** P bR6>'  
* @author treeroot X6_m&~}15  
* @since 2006-2-2 UdBP2lGd  
* @version 1.0 bj6-0`  
*/ Ie3 F  
public class ImprovedMergeSort implements SortUtil.Sort { H)XHlO^  
8<cD+Jtj  
private static final int THRESHOLD = 10; *e E&ptx1  
K@Z K@++  
/* :]?y,e%xu,  
* (non-Javadoc) RRYm.dMIw  
* `o7m)T')  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8<z]rLQw?%  
*/ :\ %.x3T'  
public void sort(int[] data) { 6U{&`8C  
int[] temp=new int[data.length]; Z#8O)GK  
mergeSort(data,temp,0,data.length-1); Y yI4T/0s_  
} b"`Vn,  
4]\ f}  
private void mergeSort(int[] data, int[] temp, int l, int r) { T<!&6,N A  
int i, j, k; [c6I/U=-  
int mid = (l + r) / 2; yc|j]?  
if (l == r) eUiJl6^x  
return; )ZkQWiP-  
if ((mid - l) >= THRESHOLD) [" '0vQ  
mergeSort(data, temp, l, mid); M,0@@:  
else $@8$_g|Wz  
insertSort(data, l, mid - l + 1); Ift @/A  
if ((r - mid) > THRESHOLD) YXD6GJWo  
mergeSort(data, temp, mid + 1, r); 3$YgGum  
else caA>; +aBH  
insertSort(data, mid + 1, r - mid); W'2a1E  
$6p_`LD0  
for (i = l; i <= mid; i++) { n0o'ns  
temp = data; \k6Ho?PL  
} 99T_y`df  
for (j = 1; j <= r - mid; j++) { C %l!"s^  
temp[r - j + 1] = data[j + mid]; KH4 5A'o  
} PA5_  
int a = temp[l]; O0?.$f9 s  
int b = temp[r]; p h[ ^ve  
for (i = l, j = r, k = l; k <= r; k++) { z"`q-R }m  
if (a < b) { 3`9H  
data[k] = temp[i++]; D;@*  
a = temp; zu6Y*{$>g  
} else {  T~I5W=y  
data[k] = temp[j--]; zB6u%uWR  
b = temp[j]; }P[x Z_S1  
} *W()|-[V3  
} W_z2Fs"A  
} + V:P-D  
5l"EQ9  
/** sP1wO4M?{  
* @param data n-q  
* @param l ?y( D_NtL  
* @param i E\U6n""]  
*/ RfP>V/jy5  
private void insertSort(int[] data, int start, int len) { Vc!` BiH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0Xmp)_vba  
} !2dA8b  
} a}N m;5K  
} u!in>]^  
} 79:Wo>C3-  
mmC&xZ5f  
堆排序: *Vk%"rwaG  
xFZA1 8  
package org.rut.util.algorithm.support; Ax[!7~s  
Vmj7`w&  
import org.rut.util.algorithm.SortUtil; % j],6wW5J  
L%,tc~)A  
/** $+` YP  
* @author treeroot RhM]OJd'  
* @since 2006-2-2 `I$'Lp#5  
* @version 1.0 =3rPE"@,[  
*/ oiP8~  
public class HeapSort implements SortUtil.Sort{ VV/6~jy0  
lSw9e<jYO  
/* (non-Javadoc) }wmn v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4_3O?IY  
*/ /]=d Pb%  
public void sort(int[] data) { t7|uZHKK  
MaxHeap h=new MaxHeap(); odxsF(Q0p  
h.init(data); M{Ss?G4H  
for(int i=0;i h.remove(); J8|F8dcz  
System.arraycopy(h.queue,1,data,0,data.length); >*ey 7g  
} #E`-b9Q  
Z5aU7  
private static class MaxHeap{ A^+G w\  
ZKKz?reM'  
void init(int[] data){ G{*m] 0Q  
this.queue=new int[data.length+1]; bH}6N>Fp  
for(int i=0;i queue[++size]=data; +^% y&8e  
fixUp(size); FC.d]XA%/d  
} ` aTkIo:ms  
} oY@4G)5  
9z9z:PU  
private int size=0; >Lo 0,b$  
(g2?&b iuz  
private int[] queue; K5U=%z  
0RY{y n3  
public int get() { JZ6{W  
return queue[1]; / H+br_D9  
} b#p)bcz!I  
B9`^JYT<  
public void remove() { =|IB=  
SortUtil.swap(queue,1,size--); g+8j$w}  
fixDown(1); ]=v_u9;  
} mx@F^  
file://fixdown y=y=W5#;77  
private void fixDown(int k) { ;Ab`b1B  
int j; X E]YKJ?|k  
while ((j = k << 1) <= size) { $Xf1|!W%a%  
if (j < size %26amp;%26amp; queue[j] j++; 6x KbK1W  
if (queue[k]>queue[j]) file://不用交换 srfFJX7*  
break; ,<$6-3sC-  
SortUtil.swap(queue,j,k); ;2"#X2B  
k = j; l1^/Q~u  
} t59" [kQ  
} j.MpQ^eJ7  
private void fixUp(int k) { 8%s ^>.rG  
while (k > 1) { eCB(!Y|  
int j = k >> 1; a p-\R  
if (queue[j]>queue[k]) 2 g"_ *[  
break; 910Ym!\{:  
SortUtil.swap(queue,j,k); O[Xl*9P  
k = j; b#0y-bR  
} qM F'&  
} & f7{3BK  
*_d+cG  
} @xR7>-$0p  
)e.Y"5My  
} v)@EK6Nty  
fr S1<+  
SortUtil: <VV./W8e9  
xq_%|p}y  
package org.rut.util.algorithm; hNB;29r~  
.$b]rx7$ ~  
import org.rut.util.algorithm.support.BubbleSort; kYBTmz} z  
import org.rut.util.algorithm.support.HeapSort; }B2H)dG^K  
import org.rut.util.algorithm.support.ImprovedMergeSort; )@.bkzW  
import org.rut.util.algorithm.support.ImprovedQuickSort; Tyu]14L  
import org.rut.util.algorithm.support.InsertSort; 7kU:91zR  
import org.rut.util.algorithm.support.MergeSort; REnd# V2x  
import org.rut.util.algorithm.support.QuickSort; w)-@?jN  
import org.rut.util.algorithm.support.SelectionSort; 87%t=X  
import org.rut.util.algorithm.support.ShellSort; iorKS+w"  
sZFIQ)b9  
/** F/9]{H  
* @author treeroot b_Ns Ch3@  
* @since 2006-2-2 -jsNAQ  
* @version 1.0 fLK*rK^{"  
*/ 2V(ye9  
public class SortUtil { LLv~yS O  
public final static int INSERT = 1; :kSA^w8  
public final static int BUBBLE = 2; D+{h@^C9Z  
public final static int SELECTION = 3; ?&Si P-G  
public final static int SHELL = 4; MfUG@  
public final static int QUICK = 5; xkR--/f  
public final static int IMPROVED_QUICK = 6; "- xm+7  
public final static int MERGE = 7; r{qM!(T  
public final static int IMPROVED_MERGE = 8; "~x\bSY  
public final static int HEAP = 9; ]c{Zh?0  
_3<J!$]&p  
public static void sort(int[] data) { lbrob' '+  
sort(data, IMPROVED_QUICK); \FN"0P(G  
} X0 &1ICZ  
private static String[] name={ u2K{3+r`'  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ";B.^pBv@;  
}; 6N(Wv0b $  
{snLiCl  
private static Sort[] impl=new Sort[]{ q@;WXHO0  
new InsertSort(), f9H;e(D9]  
new BubbleSort(), "m +Eu|{  
new SelectionSort(), /b,+YyWi%  
new ShellSort(), *v3/8enf  
new QuickSort(), aNb=gjLpt  
new ImprovedQuickSort(), M= !Fb  
new MergeSort(), Mt)~:V+:  
new ImprovedMergeSort(), 8'J> @ uW  
new HeapSort() Wq 7 c/ |  
};  g#~jF  
+]H9:ARI  
public static String toString(int algorithm){ jPYed@[+  
return name[algorithm-1]; zR h1  
} fV*x2g7w  
Ous[{"-J  
public static void sort(int[] data, int algorithm) { s]`&9{=E  
impl[algorithm-1].sort(data); \1D~4Gz6}  
} %j=dKd>  
d.tjLeY  
public static interface Sort { p?X.I]=vRv  
public void sort(int[] data); i;xH  
} BZEY^G  
 fI[tU(x  
public static void swap(int[] data, int i, int j) { YIb5jK `  
int temp = data; *%(8z~(\  
data = data[j]; dluNA(Xc-  
data[j] = temp; T8>:@EL-k  
} JC`|GaUy  
} :FwXoJc_+5  
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