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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。 d`QN^)F0#  
插入排序: ui< N[  
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package org.rut.util.algorithm.support; E(*0jAvO[z  
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import org.rut.util.algorithm.SortUtil; *D'22TO[[!  
/** 9 &$y}Y  
* @author treeroot -WY<zJ  
* @since 2006-2-2 cVXLKO  
* @version 1.0 0eT(J7[ <  
*/ LoURC$lS  
public class InsertSort implements SortUtil.Sort{ UE8kpa)cQ  
vDp8__^  
/* (non-Javadoc) G"r1+#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W,K;6TZhh  
*/ Ansk,$  
public void sort(int[] data) { 1$xNUsD2  
int temp; R|6Cv3:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M92dZ1+6  
} @3>u@  
} f/U`  
} rlMLW  
{0[tNth'h  
} >BV^H.SO|1  
S 8kCp;  
冒泡排序: bHY=x}Hv  
}fp-pe69z  
package org.rut.util.algorithm.support; +KF^Z$I  
Q7HRzA^-  
import org.rut.util.algorithm.SortUtil; T.])diuvj-  
6Pz4\uE=  
/** n7zm>&  
* @author treeroot R"-mKT}  
* @since 2006-2-2 ^PDJ0k/u1  
* @version 1.0 Mer/G2#&  
*/ $[Sc0dzJ  
public class BubbleSort implements SortUtil.Sort{ Jf{*PgP  
<ykU6=  
/* (non-Javadoc) {JO^ tI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q;B4WL}  
*/ h\$$JeSV]  
public void sort(int[] data) { S-a]j;U  
int temp; `68@+|#  
for(int i=0;i for(int j=data.length-1;j>i;j--){ DEBB()6,  
if(data[j] SortUtil.swap(data,j,j-1); 2bv=N4ly  
} evya7^,F  
} 9)h"-H;5:  
} )cX*I gO  
} 9>= ;FY  
9"N~yKa`"K  
} +G$4pt|=  
>f|||H}Snw  
选择排序: Ryl:a\  
"SNn^p59k  
package org.rut.util.algorithm.support; Wvq27YK'  
^-TE([bW  
import org.rut.util.algorithm.SortUtil; o8 IL $:  
WO7z  
/** 8^kGS-+^  
* @author treeroot /}((l%UE.  
* @since 2006-2-2 IY_iB*T3jt  
* @version 1.0 ]P9l jwR  
*/ AgWa{.`f:  
public class SelectionSort implements SortUtil.Sort { _F4Ii-6  
Wjo[ENHM  
/* M=8.Bp|Ye  
* (non-Javadoc) ZFi ee|,q  
* e+=y*OmQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,L|%"K]yM  
*/ f- K+]aZ)  
public void sort(int[] data) { @#l `iK  
int temp; ^\hG"5#  
for (int i = 0; i < data.length; i++) { \q>bs|2  
int lowIndex = i; F6LH $C  
for (int j = data.length - 1; j > i; j--) { -zCH**y%1  
if (data[j] < data[lowIndex]) { l z/8  
lowIndex = j; =h-U  
} t0( A4E  
} DMAIM|h  
SortUtil.swap(data,i,lowIndex); T"(&b~m2b4  
} _no/F2>!/n  
} hnffz95  
+Te\H  
} '<gI8W</  
raW>xOivR  
Shell排序: g!|=%(G=  
[NF'oRRD9s  
package org.rut.util.algorithm.support; ^dI424  
kPKB|kP\  
import org.rut.util.algorithm.SortUtil; ,j#XOy`mzy  
V"[g.%%Y  
/** ,A9]CQ  
* @author treeroot hE &xE;  
* @since 2006-2-2 >d(~# Z`  
* @version 1.0 EW}Bzh>b  
*/ ##q2mm:a9P  
public class ShellSort implements SortUtil.Sort{ zU,9T  
3Lfqdqj  
/* (non-Javadoc) SDC4L <!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KsddA  
*/ 'Y?"{HZ  
public void sort(int[] data) { kT|dUw9G  
for(int i=data.length/2;i>2;i/=2){ \9.bt:k@OT  
for(int j=0;j insertSort(data,j,i); xn?a. 3b'  
} m1j*mtu  
} <NHH^M\N  
insertSort(data,0,1); R$EW4]j  
} XP`Nf)3{Yd  
9,c(y sv"  
/** j9m_jv  
* @param data ~Q*%DRd&Z-  
* @param j 7( #:GD  
* @param i ]v?@g:i E  
*/ #./fY;:cj  
private void insertSort(int[] data, int start, int inc) { c|f<u{'  
int temp; l\f*d6o  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); B=U 3  
} y3vdUauOn  
} ov|d^)'  
} {5A2&  
Y`KqEjsC*  
} LmRy1T,act  
ZVW'>M7.  
快速排序: @MoKWfc  
"H2EL}3/]  
package org.rut.util.algorithm.support; WEAT01  
f@6QvkIa  
import org.rut.util.algorithm.SortUtil; Jf@H/luW  
n#mA/H;wV  
/** 6S},(=  
* @author treeroot sZ'nY o  
* @since 2006-2-2 *=) cQeJ  
* @version 1.0 E!;SL|lj.  
*/ bUs0 M0y  
public class QuickSort implements SortUtil.Sort{ %J#YM'g  
G3C~x.(f  
/* (non-Javadoc) zlyS}x@p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3Nl <p"=  
*/ p$O.> [  
public void sort(int[] data) { <xup'n^7C  
quickSort(data,0,data.length-1); "WlZ)wyF%  
} ~cWAl,(B<F  
private void quickSort(int[] data,int i,int j){ %Celc#v  
int pivotIndex=(i+j)/2; /pm]BC  
file://swap CMe 06^U   
SortUtil.swap(data,pivotIndex,j); rr/B= O7  
XWn VgY s  
int k=partition(data,i-1,j,data[j]); 5CuuG<0  
SortUtil.swap(data,k,j); MlcR"gl*  
if((k-i)>1) quickSort(data,i,k-1); {vs uPY  
if((j-k)>1) quickSort(data,k+1,j); O3;u G.:1  
ky8_UnaO  
} ht|z<XJ  
/** w!#tTyk`  
* @param data 'Jiw@t<o3`  
* @param i ~Cbc<[}  
* @param j AJt+p&I[J  
* @return `K*Q5n  
*/ w?3p';C  
private int partition(int[] data, int l, int r,int pivot) { PYiU_  
do{ >u>5{4  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )S3\,S-.  
SortUtil.swap(data,l,r); "Hya6k>j  
} >/{@C  
while(l SortUtil.swap(data,l,r); 9K.Vb1&  
return l; 1Vsz4P"O $  
} 7Sf bx~48  
H[m:0eF'5  
} uyO/55;HO  
f0A{W/0n  
改进后的快速排序: 'SO %)B  
WJ$bf(X*  
package org.rut.util.algorithm.support; i1UiNJh86  
A8xvo/n$  
import org.rut.util.algorithm.SortUtil; P|^f0Rw3.  
f< ia(d  
/** >q#rw  
* @author treeroot _uWpJhCT  
* @since 2006-2-2 F7A=GF'  
* @version 1.0 ZLc -RM  
*/ q6@Lp^f  
public class ImprovedQuickSort implements SortUtil.Sort { v5/~-uRL%  
RW|`nL  
private static int MAX_STACK_SIZE=4096; 9"NF/)_  
private static int THRESHOLD=10; &]g}u5J!=  
/* (non-Javadoc) -O1>|y2rU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) au N6prGe  
*/ ICpAt~3[M  
public void sort(int[] data) { jGJLSEe_  
int[] stack=new int[MAX_STACK_SIZE]; .RE:;<|w  
2^Eg9y'  
int top=-1; fA&k`L(y  
int pivot; mGtdO/C#B  
int pivotIndex,l,r; FFl!\y*0z  
cIUHa  
stack[++top]=0; s0\X ^  
stack[++top]=data.length-1; ? 8)'oMD  
E8!e:l =Q  
while(top>0){ LVX[uWEM  
int j=stack[top--]; [\'%?BH(^  
int i=stack[top--]; t;\kR4P  
A]<y:^2])C  
pivotIndex=(i+j)/2; b v G/|U  
pivot=data[pivotIndex]; t 4PK}>QW  
2- &k^Gl!:  
SortUtil.swap(data,pivotIndex,j); <x@}01 ~  
YO#M/%^j  
file://partition |pm7_[  
l=i-1; //*fSF   
r=j; o#;b  
do{ t,QyfN  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bT\1>  
SortUtil.swap(data,l,r); 4 <9=5q]  
} BYpG  
while(l SortUtil.swap(data,l,r); p s/A yjk  
SortUtil.swap(data,l,j); 7OC#8,  
L E&RY[  
if((l-i)>THRESHOLD){ Y}x>t* I  
stack[++top]=i; 4^:\0U F  
stack[++top]=l-1; 00'%EYO  
} +vvv[  
if((j-l)>THRESHOLD){ ;QWIsVz  
stack[++top]=l+1; dpJ_r>NI  
stack[++top]=j; ?b*s. ^  
} }]e-{C}  
? Fi=P#  
} C.~,qmOP  
file://new InsertSort().sort(data); rk&IlAE  
insertSort(data); M V<^!W  
} wL;l Q&  
/** g@rb  
* @param data 'GB. UKlR  
*/ YbR!+ 0\g  
private void insertSort(int[] data) { .+qQYDE w  
int temp; M2d$4-<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1jCLO}  
} /rM I"khB  
} $Oq^jUJ  
} ]*v dSr-J  
S-Wzour,  
} 0M*Z'n +  
rw: c  
归并排序: B&\IGWG(  
Z LB4m`  
package org.rut.util.algorithm.support; 0Z~p%C<LW  
T~--92[  
import org.rut.util.algorithm.SortUtil; _/F7 ?^j  
"k/;[ Wt]  
/** w0ht  
* @author treeroot S)lkz'tdk  
* @since 2006-2-2 %4ePc-  
* @version 1.0 gMY1ts}Z  
*/ 2#P* ,  
public class MergeSort implements SortUtil.Sort{ 3wOZ4<B  
M*!agh  
/* (non-Javadoc) M1 :uJkO.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b8~Bazk  
*/ C3*gn}[  
public void sort(int[] data) { \wo?47+=  
int[] temp=new int[data.length]; >[MX:Yh  
mergeSort(data,temp,0,data.length-1); H#@^R(  
} <%($7VMev  
p qfUW+>  
private void mergeSort(int[] data,int[] temp,int l,int r){ os,* 3WO  
int mid=(l+r)/2; }#.L7SIJ<J  
if(l==r) return ; }B8IBveu  
mergeSort(data,temp,l,mid); kB3H="3[[  
mergeSort(data,temp,mid+1,r); Rd2qe /  
for(int i=l;i<=r;i++){ #,,d>e  
temp=data; [ad@*KFxy3  
} U[SaY0Z  
int i1=l; I`p+Qt  
int i2=mid+1; wN`jE0 {  
for(int cur=l;cur<=r;cur++){ ]j'p :v  
if(i1==mid+1) T@G?t0  
data[cur]=temp[i2++]; i'4B3  
else if(i2>r) w,w{/T+B  
data[cur]=temp[i1++]; !6BW@GeF]  
else if(temp[i1] data[cur]=temp[i1++]; :ZTc7 }  
else g,}_G3[j0m  
data[cur]=temp[i2++]; ^oVs+vC  
} ;-9=RI0  
} $eD.W  
F5?m6`g?  
} 'd.EC#  
vtw6FX_B  
改进后的归并排序: =G]1LTI  
aEM%R<e  
package org.rut.util.algorithm.support; s}j{#xT  
A9f)tqbc  
import org.rut.util.algorithm.SortUtil; 21 O'M  
.P;*Dws  
/** .uuO>:  
* @author treeroot /s?r`'j[  
* @since 2006-2-2 uv=.2U46  
* @version 1.0 } E0,z  
*/ iTFdN}U  
public class ImprovedMergeSort implements SortUtil.Sort { )0ea+ ib  
(5#nrF]  
private static final int THRESHOLD = 10; 0*rQ3Z  
N03HQp)g  
/* (&}i`}v_  
* (non-Javadoc) ,a gc  
* qDv93  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9F4Dm*_<  
*/ sArhZ[H  
public void sort(int[] data) { Y<mej][  
int[] temp=new int[data.length]; s>0't  
mergeSort(data,temp,0,data.length-1); T,]7ICF#  
} j/>$,   
,8:(OB|a  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?3*l{[@J  
int i, j, k; z54EG:x.7^  
int mid = (l + r) / 2; /e7O$L)   
if (l == r) 7B b9 t  
return; v5By:z  
if ((mid - l) >= THRESHOLD) Av"R[)  
mergeSort(data, temp, l, mid); "$N#p5  
else ;u;#g  
insertSort(data, l, mid - l + 1); qR(\5}  
if ((r - mid) > THRESHOLD) (IC]?n}  
mergeSort(data, temp, mid + 1, r); <<(wa j  
else "SzdDY6  
insertSort(data, mid + 1, r - mid); 8S%52W|  
MZlk0o2  
for (i = l; i <= mid; i++) { 9/hrjItV  
temp = data; .C&ktU4  
} SF&BbjBE0  
for (j = 1; j <= r - mid; j++) { *"D3E7AO  
temp[r - j + 1] = data[j + mid]; 5"HV BfFk  
} ?*E'^~,H)  
int a = temp[l]; t"k*PA  
int b = temp[r]; ?mWw@6G,  
for (i = l, j = r, k = l; k <= r; k++) { q8^^H$<Db  
if (a < b) { %F!1  
data[k] = temp[i++]; K@#(*."  
a = temp; F_;vO%}  
} else { %%NlTE8*  
data[k] = temp[j--]; -sw  .  
b = temp[j]; \<y`!"c  
} Fe]B&n  
} x*?x=^I{  
} Rn{iaM2Y<  
: y5<go8e  
/** kBYNf =  
* @param data Hj:r[/  
* @param l oN{Z+T :  
* @param i O) WCW<p  
*/ XLAN Np%E  
private void insertSort(int[] data, int start, int len) { I3,= 0z  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @r#v[I  
} .Jt[(;  
} $/.zm; D  
} lD"(MQV@0  
} uM_#  
iTag+G4*  
堆排序: P5 K' p5}#  
*tgnYa[l  
package org.rut.util.algorithm.support; | \'rP_I>  
W6"v)Jc>_  
import org.rut.util.algorithm.SortUtil; 3 |hHR  
qxFB%KqU  
/** eU<]o< \Qo  
* @author treeroot O+?<h{"  
* @since 2006-2-2 GFel(cx:K  
* @version 1.0 ag*mG*Z  
*/ :cq9f2)  
public class HeapSort implements SortUtil.Sort{ 0TGLM#{  
>S'17D  
/* (non-Javadoc) qW!]co  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qQ"Fv|]~>  
*/ 1_\;- !t  
public void sort(int[] data) { !1q 9+e  
MaxHeap h=new MaxHeap(); E}sO[wNPf  
h.init(data); q)Fq i  
for(int i=0;i h.remove(); ?pn}s]*/  
System.arraycopy(h.queue,1,data,0,data.length); Md0 s K  
} EmODBTu+  
hjIT_{mk  
private static class MaxHeap{ i?fOK_d  
G8r``{C!  
void init(int[] data){ $)RNKMZC}A  
this.queue=new int[data.length+1]; yto,>Utzg  
for(int i=0;i queue[++size]=data; -C<zF`jO  
fixUp(size); (*oL+ef-C  
} =0G!f$7^i  
} _~*,m#uxJ  
N 5i+3&  
private int size=0; Dh5X/y  
H63,bNS s  
private int[] queue; _T2=J+"-Kp  
Td G!&:>  
public int get() { /c2w/+ _  
return queue[1]; d4nH_?  
} EI:w aIr  
D3)zk@N  
public void remove() { );Z1a&K5k  
SortUtil.swap(queue,1,size--); 9A,^c;  
fixDown(1); Gi "941zVl  
} <L`"!~Q  
file://fixdown 7.Z@Wr?  
private void fixDown(int k) { B<~ NS)w  
int j; (;q\}u  
while ((j = k << 1) <= size) { cG?cUw).E  
if (j < size %26amp;%26amp; queue[j] j++; n84GZ5O>7  
if (queue[k]>queue[j]) file://不用交换 | fSe>uVZ  
break; U7I qST  
SortUtil.swap(queue,j,k); Kt"BE j  
k = j; k'#(1(xj  
} ;gs ^%z  
} 6S+U&Ce\  
private void fixUp(int k) { ]p;FZ4-T  
while (k > 1) { tkXEHsRT  
int j = k >> 1; ;$a@J&  
if (queue[j]>queue[k]) '1$!jmY  
break; q*2N{  
SortUtil.swap(queue,j,k); RTv qls  
k = j; lWqrU1Sjl  
} # g_Bx  
} #/I[Jqf  
]|sAK%/  
}  nv0]05.4  
t`+'r}=d  
} vP !{",>  
K^ B%/T]d  
SortUtil: 4"xPr[=iG  
[+OnV&  
package org.rut.util.algorithm; D<V~f B  
=e8bNg  
import org.rut.util.algorithm.support.BubbleSort; qQ0cJIISb\  
import org.rut.util.algorithm.support.HeapSort; \mV'mZ9>  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4E+hRKuo,  
import org.rut.util.algorithm.support.ImprovedQuickSort; Op>%?W8/UF  
import org.rut.util.algorithm.support.InsertSort; *P#WDXRwd  
import org.rut.util.algorithm.support.MergeSort; ?}m']4p  
import org.rut.util.algorithm.support.QuickSort; Q4*fc^?u  
import org.rut.util.algorithm.support.SelectionSort; !}4MN:r  
import org.rut.util.algorithm.support.ShellSort; ,:`ND28V7  
JB>b`W9   
/** A0fFv+RN3  
* @author treeroot (sQr X{~  
* @since 2006-2-2 I(9R~q  
* @version 1.0 "h|'}7p  
*/ {'AWZ(  
public class SortUtil { ;q:jl~  
public final static int INSERT = 1; ?gwUwOV"  
public final static int BUBBLE = 2; !vk|<P1  
public final static int SELECTION = 3; mWyqG*-Hb  
public final static int SHELL = 4; #vzEu )Ul  
public final static int QUICK = 5; <D::9c j  
public final static int IMPROVED_QUICK = 6; H_0/f8GwnG  
public final static int MERGE = 7; *FmTy|  
public final static int IMPROVED_MERGE = 8; 8X I?  
public final static int HEAP = 9; P(;?kg}0  
VwEb7v,^0\  
public static void sort(int[] data) { -CRra EXf8  
sort(data, IMPROVED_QUICK); ,9P:Draxs`  
} ixV0|P8,c  
private static String[] name={ r YF #^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }=|!:kiE  
}; OQ,NOiNkap  
?_v{| YI=  
private static Sort[] impl=new Sort[]{ V13BB44  
new InsertSort(), ** +e7k   
new BubbleSort(), BbRBT@  
new SelectionSort(), '(dz"PL.  
new ShellSort(), a&k_=/X&  
new QuickSort(), lt_']QqU  
new ImprovedQuickSort(), Q7g>4GZC  
new MergeSort(), V~ TWKuR  
new ImprovedMergeSort(), TO-nD>  
new HeapSort() ,:%"-`a%  
}; 5l,ZoB8  
Fh*j#*oe  
public static String toString(int algorithm){ wQ%mN[  
return name[algorithm-1]; Uz7^1.-g4  
} 0v]?6wX  
l$YC/ bP  
public static void sort(int[] data, int algorithm) { VL[kJi   
impl[algorithm-1].sort(data); >/#KI~}'N  
} _ ib"b#  
#BQ.R,  
public static interface Sort { $z$u{  
public void sort(int[] data); 7c;9$j  
} jr)7kP@  
Ed:eGm }  
public static void swap(int[] data, int i, int j) { P1zdK0TM  
int temp = data; ?\#N9 +{W  
data = data[j]; <BW[1h1k5_  
data[j] = temp; ncSFj.}w]  
} u-1;'a  
} ^{\<N()R  
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