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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。 8$-MUF,  
插入排序: rRevyTs  
0Px Hf*  
package org.rut.util.algorithm.support; JlSqTfA  
yD<#Q\,  
import org.rut.util.algorithm.SortUtil; ytj});,>  
/** qBk[Afjgz  
* @author treeroot l i<9nMZ<  
* @since 2006-2-2 0@_8JB ?E  
* @version 1.0 $l ,U)  
*/ GIlaJ!/  
public class InsertSort implements SortUtil.Sort{ z"6o|]9I  
z_(l]Ern}  
/* (non-Javadoc) #Shy^58$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jO"/5 x26  
*/ +/&rO,Ql  
public void sort(int[] data) { @C-dCC?  
int temp; }<G a e5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (lwV(M  
} ` ,T .  
} b#7nt ?`7p  
} (B` NnL$  
$U,]c  
} ky !Z JR  
5JOfJ$(n  
冒泡排序: l4kqz.Z-g  
,U9j7E<4  
package org.rut.util.algorithm.support; 6%EpF;T`  
4"PA7 e  
import org.rut.util.algorithm.SortUtil; OC5oxL2HTe  
0084`&Ki  
/** B)/&xQu  
* @author treeroot EW]DzL 3  
* @since 2006-2-2 >0kL9_9{  
* @version 1.0 <2*+Y|Lk2  
*/ 23LG)or.JC  
public class BubbleSort implements SortUtil.Sort{ ,pcyU\68v  
, JH*l:7  
/* (non-Javadoc) #NT~GhWFf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LEKE+775  
*/ a3A-N] ;f  
public void sort(int[] data) { C^C'!  
int temp; + o< 7*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ p!DdX  
if(data[j] SortUtil.swap(data,j,j-1); ~RLjL"  
} djf8FNnn  
} fwtsr>SV  
} R]od/u/$  
} pz2E+o  
'\H & EJ'  
} >a@1y8B  
uYTyR;a  
选择排序: =2Ju)!%wr  
-X EK[  
package org.rut.util.algorithm.support; >CCy2W^W  
s,J\nbj0h  
import org.rut.util.algorithm.SortUtil; f[zKA{R  
,9|7{j|u  
/** v 'L"sgW6I  
* @author treeroot d;%~\+)x4  
* @since 2006-2-2 (|W6p%(  
* @version 1.0 lS;S:- -F  
*/ \U]<HEc^  
public class SelectionSort implements SortUtil.Sort { [HXd|,~_j-  
El`G<esX  
/* $LR~c)}1I  
* (non-Javadoc) #\~m}O,  
* {w>ofyqfp&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CNiJuj`  
*/ fNr*\=$  
public void sort(int[] data) { bAY >o  
int temp; k="w EZ;Q  
for (int i = 0; i < data.length; i++) { sC.cMZe  
int lowIndex = i; W[!bF'- 10  
for (int j = data.length - 1; j > i; j--) { n\JSt}A  
if (data[j] < data[lowIndex]) { '&/Y}]  
lowIndex = j; 8QFRX'i  
} Rv*x'w ==  
} #!z'R20PH  
SortUtil.swap(data,i,lowIndex); !H^R_GC  
} sN[q. M?  
} #I yM`YB0  
Ejf>QIB  
} I~ SFY>s  
+DT tKj  
Shell排序: AxJf\B8  
0} \;R5a<  
package org.rut.util.algorithm.support; 1 xrmmK  
G* mLb1  
import org.rut.util.algorithm.SortUtil; o,1Fzdh6(  
uN9.U  _  
/** arPqVMVr  
* @author treeroot :fG9p`  
* @since 2006-2-2 K!jau|FS  
* @version 1.0 M>Ws}Y  
*/ YWhS<}^  
public class ShellSort implements SortUtil.Sort{ 1p>&j%dk  
kJXy )  
/* (non-Javadoc) Re\V<\$J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "'8o8g  
*/ o AS 'Z|  
public void sort(int[] data) { ?IG+U TI  
for(int i=data.length/2;i>2;i/=2){ 4pu>f.  
for(int j=0;j insertSort(data,j,i); 0w^awT<$6  
} {-c[w&q  
} h8SK8sK<  
insertSort(data,0,1); l&Fx< W  
} ~i@Z4t j7  
(P:.@P~  
/** Jxb+NPUB  
* @param data ~f2-%~  
* @param j YsjTC$Tx,  
* @param i wmv/ ?g  
*/ Vzrp9&loY  
private void insertSort(int[] data, int start, int inc) { vn5]+-I  
int temp; ! F&{I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d 7QWK(d  
} n;dp%SD  
} FJ&?My,=J  
} .!Q[kn0a  
-,xsUw4  
} My >{;n=}  
W^nG\"T^  
快速排序: 0Z[8d0  
;(Qm<JAa  
package org.rut.util.algorithm.support; 0j~C6 vp  
m>?{flO  
import org.rut.util.algorithm.SortUtil; V@>s]]HMq#  
`Axn  
/** ab5z&7Re6  
* @author treeroot {wf e!f  
* @since 2006-2-2 [.iz<Yh  
* @version 1.0 oxm3R8 S  
*/ hz+x)M`Y  
public class QuickSort implements SortUtil.Sort{ OGO4~Up  
?Da!QH >,]  
/* (non-Javadoc) 8BJ&"y8H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3m`y?Dd  
*/ [^-DFq5@  
public void sort(int[] data) {  t"'aQr  
quickSort(data,0,data.length-1); Y_&)>;  
} G&*2h2,]  
private void quickSort(int[] data,int i,int j){ )![? JXf  
int pivotIndex=(i+j)/2; {#1}YGpiVM  
file://swap m]U`7!  
SortUtil.swap(data,pivotIndex,j); V5LzUg]  
AA,n.;zy<  
int k=partition(data,i-1,j,data[j]); Q|o~\h<  
SortUtil.swap(data,k,j); wN!5[N"  
if((k-i)>1) quickSort(data,i,k-1); !n/"39KT  
if((j-k)>1) quickSort(data,k+1,j); S-6 %mYf  
:u53zX[v  
} Q<pL5[00fD  
/** 6jtnH'E/  
* @param data Ol]+l]  
* @param i 5Y97?n+6  
* @param j jz;"]k  
* @return Dos`lh  
*/ F\;G'dm  
private int partition(int[] data, int l, int r,int pivot) { HI30-$9  
do{ Nu'T0LPNq(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); E|d 8vt  
SortUtil.swap(data,l,r); +Te;LJP  
} * 7 o(  
while(l SortUtil.swap(data,l,r); t/aT  
return l; Bq]eNq  
} x, ^j=n  
LY^pmak  
} Hh8)d/D  
5)GO  
改进后的快速排序: C_= WL(  
/uzU]3KF~  
package org.rut.util.algorithm.support; V}kZowWD  
G? "6[w/p  
import org.rut.util.algorithm.SortUtil; 0xM\+R~,  
0"L_0 t:  
/** #}W^d^-5t5  
* @author treeroot y++[:M  
* @since 2006-2-2 auTApYS53  
* @version 1.0 \Z^YaKj&  
*/ Q_F8u!qrZ  
public class ImprovedQuickSort implements SortUtil.Sort { Q=%1@ ,x"  
~sSlfQWMzy  
private static int MAX_STACK_SIZE=4096; 0ZXG{Gp9S  
private static int THRESHOLD=10; ZLJfSnB  
/* (non-Javadoc) f6ad@2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G_~w0r#  
*/ g3(fhfR'RN  
public void sort(int[] data) { ayJKt03\O\  
int[] stack=new int[MAX_STACK_SIZE]; T0ebW w  
(P[:g  
int top=-1; _s Z9p4]  
int pivot; <o";?^0Q  
int pivotIndex,l,r; ^{GnEqml&  
c?{&=,u2  
stack[++top]=0; z5v)~+"1  
stack[++top]=data.length-1; 7N / v  
Nj_h+=UE!  
while(top>0){ Z`23z( +  
int j=stack[top--]; 54w..8'  
int i=stack[top--]; Lh6G"f(n  
;_GS<[A3  
pivotIndex=(i+j)/2; ^xO CT=V  
pivot=data[pivotIndex]; K_4}N%P/))  
7 p(^I*|  
SortUtil.swap(data,pivotIndex,j); ^E8XPK]-~  
@O/-~, E68  
file://partition ! 3O#'CV  
l=i-1; !52]'yub  
r=j; R;gN^Yjk:  
do{ PG8|w[V1"  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7Xi)[M?)#  
SortUtil.swap(data,l,r); 5uu Zt0V\  
} D}wM$B@S  
while(l SortUtil.swap(data,l,r); Lc!% 3,#.  
SortUtil.swap(data,l,j); |>(;gr/5(  
G-[fz  
if((l-i)>THRESHOLD){ Lmx95[#@a  
stack[++top]=i; _ a|zvH  
stack[++top]=l-1;  h+Dp<b  
} (7G5y7wI"  
if((j-l)>THRESHOLD){ y1!c:&  
stack[++top]=l+1; C&b^TLe  
stack[++top]=j; ika/ GG  
} GQOz\ic  
,mR$Y T8  
} o })k@-oL  
file://new InsertSort().sort(data); %:2<'s2Si  
insertSort(data); 0 V:z(r  
} 'PF?D~  
/** eDR4 c%  
* @param data x8xSA*@k  
*/ ML!Z m[I9  
private void insertSort(int[] data) { AXhV#nZt0  
int temp; :4PK4D s7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); < ) L'h  
} gN|[n.W4  
} f\FubL  
} 9pD=E>4?#  
uI^E9r/hB  
} ;H5PiSq;z  
/pZ]:.A  
归并排序: \-Mzs 0R  
mdW8RsR  
package org.rut.util.algorithm.support; gwtR<2,p  
3zU!5t g  
import org.rut.util.algorithm.SortUtil; BD+V{x}P  
KPI c?|o/6  
/** !fXwX3B  
* @author treeroot `VT[YhO#}  
* @since 2006-2-2 e$M \HPc  
* @version 1.0 ORhe?E]  
*/ Mj2o>N2,  
public class MergeSort implements SortUtil.Sort{ a,3} o:f  
o;+$AU1f  
/* (non-Javadoc) ;ZMm6o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s+;J`_M  
*/ ^| L@f  
public void sort(int[] data) { 6vySOVMj  
int[] temp=new int[data.length]; |[/[*hDZ9  
mergeSort(data,temp,0,data.length-1); Z&gM7Zo8  
} L|Zja*  
,*SoV~  
private void mergeSort(int[] data,int[] temp,int l,int r){ [hE0 9W  
int mid=(l+r)/2; kGsd3t!'  
if(l==r) return ; ,C%fA>?UF8  
mergeSort(data,temp,l,mid); hm"i\JZ3N  
mergeSort(data,temp,mid+1,r); Z<6XB{Nh\  
for(int i=l;i<=r;i++){ 3[plwe  
temp=data; 1'wwwxe7  
} rcUXYJCh-  
int i1=l; 5(0f"zY  
int i2=mid+1; (he cvJ  
for(int cur=l;cur<=r;cur++){ z yyt`  
if(i1==mid+1) $Cw> z^}u  
data[cur]=temp[i2++]; !e?g"5r{Bv  
else if(i2>r) ]3Z?Q  
data[cur]=temp[i1++]; <u2rb6  
else if(temp[i1] data[cur]=temp[i1++]; `wRQ-<Y  
else BFP (2j  
data[cur]=temp[i2++]; t .*z)N  
}  B@Acm  
} z DDvXz  
42X N*br  
} cn1UFmT  
-I-u.!  
改进后的归并排序: 7p'L(dq  
Uf#.b2]  
package org.rut.util.algorithm.support; UV}\#86!  
UX3 ]cr  
import org.rut.util.algorithm.SortUtil; {[~cQgCI  
0F$;]zg  
/** dc[w`  
* @author treeroot (\^| @  
* @since 2006-2-2 H4[];&]xr  
* @version 1.0 g.![>?2$8  
*/ <BoDLvW>  
public class ImprovedMergeSort implements SortUtil.Sort { Y)*5M  
W`HO Q  
private static final int THRESHOLD = 10; oG5 :]/F  
q3a`Y)aVB  
/* FV>j !>Y  
* (non-Javadoc) am >X7  
* y5;l?v94  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [J4 Aig  
*/ ;8z40cD  
public void sort(int[] data) { i[obQx S94  
int[] temp=new int[data.length]; U40adP? a  
mergeSort(data,temp,0,data.length-1); zrD];DP  
} >05_#{up  
%Z|]"=;6  
private void mergeSort(int[] data, int[] temp, int l, int r) { @]$qJFXx  
int i, j, k; "vVL52HwB  
int mid = (l + r) / 2; :2#8\7IU^'  
if (l == r) MRzrZZ%LQ  
return; .I%p0ds1r  
if ((mid - l) >= THRESHOLD) sU>!sxW  
mergeSort(data, temp, l, mid); )Ih '0>=  
else LwDm(gG  
insertSort(data, l, mid - l + 1); &w@~@]  
if ((r - mid) > THRESHOLD) fAMJFHW  
mergeSort(data, temp, mid + 1, r); e_3KNQ`kA  
else ,0ZkE}<=w  
insertSort(data, mid + 1, r - mid); \wW'Hk=  
(x7AV$N  
for (i = l; i <= mid; i++) { P} =eR  
temp = data; iwb]mJUA  
} @.T w*t  
for (j = 1; j <= r - mid; j++) { b"x[+&%i  
temp[r - j + 1] = data[j + mid]; q^nSYp#  
} 3fC|}<Wzt  
int a = temp[l]; xi5/Wc6  
int b = temp[r]; WU oGIT'  
for (i = l, j = r, k = l; k <= r; k++) { -P!_<\q\l  
if (a < b) { d0(GE4+/  
data[k] = temp[i++]; BPAz.K Q  
a = temp;  q0Rd^c  
} else { OE,uw2uaT  
data[k] = temp[j--]; &%YFO'>>}  
b = temp[j]; jn+NX)9  
} UO-<~DgH  
} `? ayc/TK  
} { bjK(|  
HA}pr6Z  
/** ,/ V'(\>  
* @param data /rRQ*m_  
* @param l -!]Ie4"  
* @param i [kc%+j<g  
*/ .:eNL]2%:  
private void insertSort(int[] data, int start, int len) { j!c[$;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }hT1@I   
} _E({!t"`  
} JM8 s]&  
} .f'iod-   
} LM_/:  
cE x$cZRMI  
堆排序: RZykwD(  
.hh 2II  
package org.rut.util.algorithm.support;  *,9.Bx*  
,6[}qw) *  
import org.rut.util.algorithm.SortUtil; Q>gU(  
<,~ =o  
/** 4uip!@$K  
* @author treeroot \! 8`kC  
* @since 2006-2-2 @Yua%n6]#D  
* @version 1.0 Is6<3eQ\x  
*/ Zp|LCE"  
public class HeapSort implements SortUtil.Sort{ [0GM!3YJ7  
m,n V,}@J  
/* (non-Javadoc) *"E?n>b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^&t(O1.-  
*/ )2X ng_,  
public void sort(int[] data) { "A jtNL5  
MaxHeap h=new MaxHeap(); ;S+c<MSl  
h.init(data); \~xOdqF/  
for(int i=0;i h.remove(); YWA:741  
System.arraycopy(h.queue,1,data,0,data.length); 4+mawyM  
} n3{m "h3  
fM]McZ9)D  
private static class MaxHeap{ ki6`d?  
~Z5?\a2Ld  
void init(int[] data){ x q93>Hs  
this.queue=new int[data.length+1]; t" 1'B!4  
for(int i=0;i queue[++size]=data; ak50]KYo  
fixUp(size); `+b>@2D_  
} +j5u[X  
} &?3?8Q\  
EmNB}\IYU  
private int size=0; )@Yp;=l  
f}bUuQrH-!  
private int[] queue; 9/w'4bd  
YgaJ*%\  
public int get() { Co8b0-Z  
return queue[1]; 5=Bj?xb$'  
} w <]7:/  
uK]@! gz  
public void remove() { =5&)^  
SortUtil.swap(queue,1,size--); \S;% "0!  
fixDown(1); wxZnuCO%H8  
} 3Z'{#<1>^;  
file://fixdown G?QFF6)}!  
private void fixDown(int k) { ~c!zTe  
int j; EU,4qO  
while ((j = k << 1) <= size) { c< gM  
if (j < size %26amp;%26amp; queue[j] j++; ;?;D(%L  
if (queue[k]>queue[j]) file://不用交换 mM~!68lR  
break; G*BM'^0+  
SortUtil.swap(queue,j,k); e#k9}n^+  
k = j; S6H=(l58  
}  L}AR{  
} !mL,Ue3/  
private void fixUp(int k) { u*Oz1~  
while (k > 1) { ^e8R 43w:!  
int j = k >> 1; P<kTjG  
if (queue[j]>queue[k]) k`js~/Xv  
break; VO(Ck\i}  
SortUtil.swap(queue,j,k); sVkR7 ^KsG  
k = j; %R;cXs4r  
} 6u7 (}K  
} u7j-uVG  
N(&FATZUW  
} .mDqZOpf=4  
p"H8;fPA0  
} $?Aez/  
mkBQX  
SortUtil: ^yK94U;<Gy  
kRiWNEw  
package org.rut.util.algorithm; SX^fh.  
~J<bwF  
import org.rut.util.algorithm.support.BubbleSort; 'n:Ft  
import org.rut.util.algorithm.support.HeapSort; ,_rarU)[J  
import org.rut.util.algorithm.support.ImprovedMergeSort; * {4cc  
import org.rut.util.algorithm.support.ImprovedQuickSort; NH 'RU`U)  
import org.rut.util.algorithm.support.InsertSort; `4}!+fXQ  
import org.rut.util.algorithm.support.MergeSort; 3!Qt_,  
import org.rut.util.algorithm.support.QuickSort; 7gVWu"  
import org.rut.util.algorithm.support.SelectionSort; --.j&w  
import org.rut.util.algorithm.support.ShellSort; #-'}r}1ZT  
20?i4h_  
/** XOqpys  
* @author treeroot `zzX2R Je  
* @since 2006-2-2 2)j\Lg_M  
* @version 1.0 d`~#uN {  
*/ c+a f=ac  
public class SortUtil { G)# ,39P  
public final static int INSERT = 1; (X>y)V  
public final static int BUBBLE = 2; j%p~.kW5  
public final static int SELECTION = 3; rG\m]C3E  
public final static int SHELL = 4; Czv lZDo  
public final static int QUICK = 5; m/eGnv;!  
public final static int IMPROVED_QUICK = 6; &V=54n=O?  
public final static int MERGE = 7; :ZL>JVk  
public final static int IMPROVED_MERGE = 8; Vj2GK"$v  
public final static int HEAP = 9; r`;C9#jZ  
Z$ftG7;P0  
public static void sort(int[] data) { g~B@=R  
sort(data, IMPROVED_QUICK); t*qA.xc6  
} vhL&az  
private static String[] name={ ^F"*;8$  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G0Wd"AV+  
}; zl: u@!'  
\Flq8S/t^  
private static Sort[] impl=new Sort[]{ Y43#];  
new InsertSort(), LV]\{'  
new BubbleSort(), mSj[t   
new SelectionSort(), Q%eBm_r;  
new ShellSort(), ^1~/FU  
new QuickSort(), ESomw  
new ImprovedQuickSort(), b8]oI"&G  
new MergeSort(), {?!hUi+  
new ImprovedMergeSort(), p +T&9  
new HeapSort() z!3Z^d`  
}; `S~u4+y]  
&R5M&IwL  
public static String toString(int algorithm){ D{loX6  
return name[algorithm-1]; $U8ap4EXM  
} gMGg9U$@  
pc.0;g N  
public static void sort(int[] data, int algorithm) { P9>C!0 -x  
impl[algorithm-1].sort(data); @[FFYVru  
} >bZ#  
8@A[ `5  
public static interface Sort { =#V11j  
public void sort(int[] data); (mD]}{>  
} 6=g7|}  
v'>Yc#VJ  
public static void swap(int[] data, int i, int j) { j |i6/Pk9J  
int temp = data; s{,e^T  
data = data[j]; <=-\so(  
data[j] = temp; 62 _$O"  
}  \1MDCP9:  
} IW1\vfe  
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