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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。 1z8AK"8  
插入排序: D7N` %A8   
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package org.rut.util.algorithm.support; f,0oCBLPO  
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import org.rut.util.algorithm.SortUtil; JA?P jo  
/** (XA]k%45  
* @author treeroot HuL9' M  
* @since 2006-2-2 ~Ywto  
* @version 1.0 8:UV;5@  
*/ ^p7Er!  
public class InsertSort implements SortUtil.Sort{ -}<W|r  
}~o>H a;  
/* (non-Javadoc) e0u* \b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !bD`2m[Q  
*/ \ 5^GUT  
public void sort(int[] data) { ~%:23mIk  
int temp; 9L xa?Y1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }3mIj<I1;  
} }q@Jh*  
} ur`:wR] 2?  
} w6l8RNRe  
oBTRO0.s+  
} IE9A _u*  
3YPoObY  
冒泡排序: |Gh~Zu p  
i50^%,  
package org.rut.util.algorithm.support; j"8|U E  
k GzosUt  
import org.rut.util.algorithm.SortUtil; _[.3I1kG  
[Y]\sF;J  
/** y"SVZ} ;|  
* @author treeroot ]`Y;4XR  
* @since 2006-2-2 3 a G?^z  
* @version 1.0 g&V1<n\b+  
*/ <}$o=>'  
public class BubbleSort implements SortUtil.Sort{ 8wqHr@}p  
sP5\R#  
/* (non-Javadoc) QGnBNsAh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q.>{d%?  
*/ pTlNJ!U>  
public void sort(int[] data) { Ey!+rq}  
int temp; thjCfP   
for(int i=0;i for(int j=data.length-1;j>i;j--){ *L.+w-g&&  
if(data[j] SortUtil.swap(data,j,j-1); <M|kOi  
} ca1A9fvo  
} AA$-Lx(UJk  
} RE(R5n28,  
} u%vq<|~-  
LCRZ<?O[|  
} {?' DZR s  
2!b+}+:  
选择排序: R1X{=ct  
F+!K9(`|  
package org.rut.util.algorithm.support; ,9W|$2=F  
G-]ndrTn  
import org.rut.util.algorithm.SortUtil; =FXZcP>h  
d&QB?yLd  
/** D"m]`H  
* @author treeroot 'e;]\< 0z  
* @since 2006-2-2 q}#4bB9  
* @version 1.0 _fu?,  
*/ U1t7XZ3e  
public class SelectionSort implements SortUtil.Sort { aoh"<I%]>4  
uMToVk`Uv  
/* J ;=~QYn[  
* (non-Javadoc) W7lR 54%|  
* /MB3w m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O!(M:.  
*/ Ph'P<h:V  
public void sort(int[] data) { !>{` o/dZ  
int temp; I=)u:l c  
for (int i = 0; i < data.length; i++) { |T}Q ~  
int lowIndex = i; Oozt&* F  
for (int j = data.length - 1; j > i; j--) { YULI y-W  
if (data[j] < data[lowIndex]) { CD'.bFO^+T  
lowIndex = j; *eAsA(;  
} #%xzy@`  
} EencMi7J  
SortUtil.swap(data,i,lowIndex); c-L1 Bkw  
} B6&;nU>;  
} Pvq74?an`  
5 #)5Z8`X  
} B'OUT2cgB  
ruG5~dm>  
Shell排序: i"~J -{d}  
>i%{5d  
package org.rut.util.algorithm.support; xn'&TQo0  
.|Pq!uLvc  
import org.rut.util.algorithm.SortUtil; ^#T@NN0T  
?H\K];  
/** @-9I<)Z/2  
* @author treeroot %- W3F5NK  
* @since 2006-2-2 |^^'GZ%a  
* @version 1.0 _H9.A I  
*/ \YE(E04w57  
public class ShellSort implements SortUtil.Sort{ B 3Y,|*  
?32gug\i'}  
/* (non-Javadoc) '`#sOH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IvFxI#.ju  
*/ l&@]   
public void sort(int[] data) { [=[>1<L>  
for(int i=data.length/2;i>2;i/=2){ 59;p|  
for(int j=0;j insertSort(data,j,i); diF-`~  
} p0jQQg  
} n 7Mab  
insertSort(data,0,1); #d,+87]\=  
} ,iKL 68  
]o18oY(  
/** 8LI,'XZ  
* @param data 1PD{m{  
* @param j ztcV[{[g  
* @param i n.&z^&$w\)  
*/ K}e %E&|>  
private void insertSort(int[] data, int start, int inc) { &eL02:[  
int temp; $9!2c/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +ML4.$lc^  
} }w{ 6Ua  
} [&e|:1  
} >?/Pl"{b  
cn62:p]5  
} z']TRjDbT  
3mI(5~4A]?  
快速排序: tI42]:z  
-? _#Yttu  
package org.rut.util.algorithm.support; AI{Tw>hZ  
Ah5`Cnv  
import org.rut.util.algorithm.SortUtil; -][~_Hd{  
SvZ~xTit  
/** ^O#>LbM"x  
* @author treeroot y:t@X~  
* @since 2006-2-2 N~rA/B]T  
* @version 1.0 0!<qfT a  
*/ TR;"&'#k  
public class QuickSort implements SortUtil.Sort{ or~2r8  
LhN?j5XqM  
/* (non-Javadoc) #|<\q*<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ME.l{?v  
*/ kj_MzgC'?  
public void sort(int[] data) {  .dA_}  
quickSort(data,0,data.length-1); @d&(*9Y  
} s!WGs_1@  
private void quickSort(int[] data,int i,int j){ _ebo  
int pivotIndex=(i+j)/2; 0,b.;r  
file://swap e"7<&% Oq  
SortUtil.swap(data,pivotIndex,j); T_\Nvzb}  
;gS)o#v0  
int k=partition(data,i-1,j,data[j]); YfRjr  
SortUtil.swap(data,k,j); t1Ty.F)r  
if((k-i)>1) quickSort(data,i,k-1); sIUhk7Cd8  
if((j-k)>1) quickSort(data,k+1,j); =35g:fL  
/V-uo(n< .  
} {zd0 7!9y  
/** O+iNR9O  
* @param data Z3C]n,I  
* @param i ,z4)A&F[c;  
* @param j _"_ 21uB  
* @return %r E:5)  
*/ tuT>,BbR  
private int partition(int[] data, int l, int r,int pivot) {  |2<y  
do{ 3jSt&+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); I+08tXO  
SortUtil.swap(data,l,r); pco:]3BF6  
} 5;WESk  
while(l SortUtil.swap(data,l,r); s fD@lW3  
return l; S vTd#>ke  
} ~Up5+7k@  
.r ,wc*SF  
} Pz\4#E]  
(G1KMy  
改进后的快速排序: ZhqGUb  
@:,B /B;  
package org.rut.util.algorithm.support; f.yvKi.Cm  
k^VL{z:EWB  
import org.rut.util.algorithm.SortUtil; ,> Ya%;h2k  
zR@4Z>6   
/** azhilUD8  
* @author treeroot v11Uw?CM  
* @since 2006-2-2 !uZ)0R  
* @version 1.0 %C[#:>'+  
*/ RSfB9)3D  
public class ImprovedQuickSort implements SortUtil.Sort { + d?p? v  
DT;n)7+,  
private static int MAX_STACK_SIZE=4096; _*l+ze[a  
private static int THRESHOLD=10; ttP|}|O  
/* (non-Javadoc) ! 3 ;;6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vs1H)T%  
*/ :)9CG!2y<M  
public void sort(int[] data) { Ew< sK9[o  
int[] stack=new int[MAX_STACK_SIZE]; 'c7'iDM  
<z.Y#{p?k  
int top=-1; As{Q9o5j/  
int pivot; e w%rc.;  
int pivotIndex,l,r;  !n`9V^`  
7MbV|gM}  
stack[++top]=0; %LM2CgH V  
stack[++top]=data.length-1; |*fi!nvk@  
dI(1L~  
while(top>0){ 2v$\mL  
int j=stack[top--]; r+Pfq[z&  
int i=stack[top--]; R|m!*B~  
;S_Imf0$v  
pivotIndex=(i+j)/2; 2y"L&3W  
pivot=data[pivotIndex]; ] /"!J6(e  
*P01 yW0  
SortUtil.swap(data,pivotIndex,j); Yt!o Hn  
C1`fJh y  
file://partition &gLXS1O  
l=i-1; 9kzJ5}  
r=j; V3S"LJ  
do{ uQhI)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `uwSxt  
SortUtil.swap(data,l,r); =L\&} kzB  
} 49o/S2b4z  
while(l SortUtil.swap(data,l,r); ul-O3]\'@  
SortUtil.swap(data,l,j); /$\N_`bM  
P7 h^!a/  
if((l-i)>THRESHOLD){ v)j3YhY  
stack[++top]=i; H'"=C&D~  
stack[++top]=l-1; `_iK`^(-  
} " k0gZb  
if((j-l)>THRESHOLD){ j'uzjs[  
stack[++top]=l+1; ]\1H=g%Ou  
stack[++top]=j; lNLa:j  
} og?L 9  
*b4W+E  
} Z!+n/ D-1  
file://new InsertSort().sort(data); Y1wH_!%b  
insertSort(data); %ONU0xtqk  
} J4]tT pu"K  
/** !59,<N1Iu  
* @param data Q<Q?#v7NX  
*/ 0 wjL=]X1e  
private void insertSort(int[] data) { 'u#c_m! 9  
int temp; 5oe{i/#di  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F2>W{-H+  
} .~a.mT  
} < ZG!w^  
} \nUJ)w  
3dx.%~c  
} WCYVonbg"  
?!.L#]23f  
归并排序: % !>@m6JK  
w5+(A_  
package org.rut.util.algorithm.support; :sS4T&@1=  
E{'Y>g B6  
import org.rut.util.algorithm.SortUtil; cK-jN9U  
`.g'bZ<v/  
/** j;<s!A#  
* @author treeroot ]pWn%aGv*Y  
* @since 2006-2-2 vX?C9Fr2  
* @version 1.0 d" =)=hm!  
*/ )GfL?'Z  
public class MergeSort implements SortUtil.Sort{ nGM;|6x"8|  
`i vE: 3k  
/* (non-Javadoc) 1j]vJ4R_\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rMoz+{1A  
*/ 58t_j54  
public void sort(int[] data) { *m8{yh  
int[] temp=new int[data.length]; $WiU oS  
mergeSort(data,temp,0,data.length-1); ^KJi |'B  
} A6 I^`0/  
+V9(4la  
private void mergeSort(int[] data,int[] temp,int l,int r){ 4nXemU=  
int mid=(l+r)/2; 'Yaq; mDY  
if(l==r) return ; V$_.&S?(Y  
mergeSort(data,temp,l,mid); X"V)oC  
mergeSort(data,temp,mid+1,r); q8)w Al  
for(int i=l;i<=r;i++){ o]eG+i6g]  
temp=data; C{G;G@/7  
} :(K JLa]  
int i1=l; 5`6U:MDq  
int i2=mid+1; gL &)l!2Y  
for(int cur=l;cur<=r;cur++){  e**5_L  
if(i1==mid+1) t9.| i H  
data[cur]=temp[i2++]; (+nnX7V?I  
else if(i2>r) vW0U~(XlN  
data[cur]=temp[i1++]; ck$>   
else if(temp[i1] data[cur]=temp[i1++]; :7*9W|e  
else GF36G?iEi  
data[cur]=temp[i2++]; 5,BvT>zFY  
} KP`Pzx   
} l15Z8hYh j  
6H!l>@a7v  
} \D-X _.v  
_=9m [  
改进后的归并排序: $k+XH+1CW  
\"X_zM  
package org.rut.util.algorithm.support; @ %o'  
mMT\"bb'  
import org.rut.util.algorithm.SortUtil; ^e]h\G  
tqpSir  
/** I  :8s3;  
* @author treeroot im9Pjb%  
* @since 2006-2-2 NOFH  
* @version 1.0 Q]]M;(  
*/ vCn~- Q  
public class ImprovedMergeSort implements SortUtil.Sort { E;YD5^B  
z%nplG'~|  
private static final int THRESHOLD = 10; KuF>2KX~Y  
lSy_cItF  
/* " eS-i@  
* (non-Javadoc) (/S6b  
* 9 RC:-d;;_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F jW%M;H  
*/ :|-^et]a8  
public void sort(int[] data) { 7HJH9@8V  
int[] temp=new int[data.length]; \0)2 u[7  
mergeSort(data,temp,0,data.length-1); RLO<5L  
} @cQ |`  
dFZh1*1  
private void mergeSort(int[] data, int[] temp, int l, int r) { M 9 N'Hk=  
int i, j, k; EL6<%~,V"I  
int mid = (l + r) / 2; _`Dz%(c  
if (l == r) \SBAk h  
return; (rQ)0g@  
if ((mid - l) >= THRESHOLD) `j'gt&  
mergeSort(data, temp, l, mid); id)J;!^;J  
else keJ-ohv)  
insertSort(data, l, mid - l + 1); eI@G B  
if ((r - mid) > THRESHOLD) P!!:p2fo  
mergeSort(data, temp, mid + 1, r); JHuA}f{2&  
else r@Xh8 r;  
insertSort(data, mid + 1, r - mid); ;+n25_9  
S-79uo  
for (i = l; i <= mid; i++) { (\4YBaGd  
temp = data; 0IQ|`C.  
} KcM+ 8W\  
for (j = 1; j <= r - mid; j++) { a fB?js6  
temp[r - j + 1] = data[j + mid]; {DX1/49  
} o}Zl/&(  
int a = temp[l]; u"(2Xer  
int b = temp[r]; zX8{(  
for (i = l, j = r, k = l; k <= r; k++) { zomg$@j  
if (a < b) { ;(s.G-9S  
data[k] = temp[i++]; } <q=Zq+  
a = temp; ,]4.|A_[Rq  
} else { U\q?tvn'J  
data[k] = temp[j--]; d3p;[;`  
b = temp[j]; D7C%Y^K]>E  
} ^ lG^.  
} E6xWo)`%5s  
} hOe$h,E']  
qX]ej 2  
/** _<jccQ  
* @param data Mvk#$:8e  
* @param l %p};Di[V  
* @param i T_qh_L3  
*/ u73/#!(1=H  
private void insertSort(int[] data, int start, int len) { V6b)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Yt;@ @xe&  
} mZ.E;X& ,*  
} t`0(5v  
} |RI77b:pX  
} 7T?7KS  
P#2;1ki>  
堆排序: X6oY-4O  
'x= y:0A  
package org.rut.util.algorithm.support; P,n:u'Iwy  
`(L<Q%  
import org.rut.util.algorithm.SortUtil; e(k$k>?  
tHo/Vly6Z  
/** tUs{/Je  
* @author treeroot 0.!Q 4bhD  
* @since 2006-2-2 5O"wPsl  
* @version 1.0 uzLIllVX*  
*/ W97 &[([  
public class HeapSort implements SortUtil.Sort{ r<.*:]L  
=_d-MJy~6  
/* (non-Javadoc) C5oIl_t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MP`WU}2  
*/ _ 3>|1RB  
public void sort(int[] data) { m}nA- *  
MaxHeap h=new MaxHeap(); 1I U*:Z;Rz  
h.init(data); Alb5#tm:m  
for(int i=0;i h.remove();  \4&FW|mx  
System.arraycopy(h.queue,1,data,0,data.length); Xu\22/Co  
} LWP&Si*j  
q8vRUlf  
private static class MaxHeap{ (9D,Ukw  
.g6(07TyV  
void init(int[] data){ Ps{}SZn  
this.queue=new int[data.length+1]; N+NS\Y5  
for(int i=0;i queue[++size]=data; %i`YJ  
fixUp(size); Dz&<6#L<  
} q,eXH8 x  
} As*59jkB  
2BIOA#@t  
private int size=0; PRF^<%mkI  
~ TALpd  
private int[] queue; "G!V?~;  
:#p!&Fi  
public int get() { tL@m5M%:N2  
return queue[1]; N @sVA%L.  
} 7ip(-0  
g,cl|]/\d  
public void remove() { (#k2S-5  
SortUtil.swap(queue,1,size--); ^7% KS  
fixDown(1); B\Y !5$  
} gw9:1S  
file://fixdown a0x/? )DO  
private void fixDown(int k) { s&*s9F  
int j; xo*[ g`N  
while ((j = k << 1) <= size) { Fu !sw]6xx  
if (j < size %26amp;%26amp; queue[j] j++; CI6qDh6  
if (queue[k]>queue[j]) file://不用交换 cX/ ["AM  
break; kP}91kja  
SortUtil.swap(queue,j,k); [8.w2\<?  
k = j; &\o !-EIK8  
} H"> }y D  
} Cdd +I5~  
private void fixUp(int k) { 5%6r,?/7KM  
while (k > 1) { lGP'OY"Q  
int j = k >> 1; UBxQ4)%  
if (queue[j]>queue[k]) !'EE8Tp~F  
break; $:MO/Su z{  
SortUtil.swap(queue,j,k); B%Sp mx8  
k = j; YG6Kvc6T  
} (eAh8^)  
} UZ+FV;<  
Bx32pY  
} JMq00_  
Px))O&w{  
} A">A@`}  
-!]dU`:(X  
SortUtil: nY<hfqof  
MM%c   
package org.rut.util.algorithm; nf MQ3K P  
8"g.Z*  
import org.rut.util.algorithm.support.BubbleSort; e RjpR?!\  
import org.rut.util.algorithm.support.HeapSort; )v67wn*1A  
import org.rut.util.algorithm.support.ImprovedMergeSort; OVm $  
import org.rut.util.algorithm.support.ImprovedQuickSort; pJE317 p'  
import org.rut.util.algorithm.support.InsertSort; U ]6 Hml;l  
import org.rut.util.algorithm.support.MergeSort; yegTKoY  
import org.rut.util.algorithm.support.QuickSort; B[0XzV]Z  
import org.rut.util.algorithm.support.SelectionSort; %%w]-`^h,  
import org.rut.util.algorithm.support.ShellSort; glppb$oB\  
G&Sp }  
/** RT)*H>|  
* @author treeroot ' cl&S:  
* @since 2006-2-2 5? s$(Lt~  
* @version 1.0 V/G'{ q  
*/ nEM>*;iE   
public class SortUtil { vWwnC)5  
public final static int INSERT = 1; fH7o,U|  
public final static int BUBBLE = 2; u F T&r|  
public final static int SELECTION = 3; \i=,[8t[r  
public final static int SHELL = 4; O`hOVHD Q  
public final static int QUICK = 5; ymBevL  
public final static int IMPROVED_QUICK = 6; ` `A=p<W  
public final static int MERGE = 7; rs R0V+(W  
public final static int IMPROVED_MERGE = 8; Osdw\NNH~M  
public final static int HEAP = 9; ?b~Vuo  
j9za)G-J  
public static void sort(int[] data) { Xo*=iD$Jys  
sort(data, IMPROVED_QUICK); 1v4(  
} lc=C  
private static String[] name={ DT@6Q.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \@4_l?M  
}; 5"5D(  
( {H5k''  
private static Sort[] impl=new Sort[]{ p_jDnb#  
new InsertSort(), !ldb_*)h  
new BubbleSort(), 451r!U1Z  
new SelectionSort(), 4l$(#NB<  
new ShellSort(), gC#PqK~  
new QuickSort(), 'Z+~G  
new ImprovedQuickSort(), z2&SZ.mk  
new MergeSort(), +?~'K&@  
new ImprovedMergeSort(), u4=j!Zb8}  
new HeapSort() |wZ8O}O{E  
}; F}A@H<?  
pCNihZ~  
public static String toString(int algorithm){ #"a?3!wr  
return name[algorithm-1]; H85HL-{  
} H\2+cAFN#  
%zs 1v]  
public static void sort(int[] data, int algorithm) { ` =!&9o  
impl[algorithm-1].sort(data); z$E+xZ  
} pI |;  
[BHf>  
public static interface Sort { Mrp'wF D  
public void sort(int[] data); 8Z!+1b  
} k|,pj^  
2@o_7w98  
public static void swap(int[] data, int i, int j) { vS:%(Y"!<  
int temp = data; ;PJWd|3  
data = data[j]; 0sRby!  
data[j] = temp; 4?X#d)L(  
} . oUaq|O  
} *tjE#TW  
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