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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。 b(_PV#@$  
插入排序: G}`Hu_ [\)  
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package org.rut.util.algorithm.support; ~GjM:*  
B0!W=T\  
import org.rut.util.algorithm.SortUtil; G:;(,  
/** IJ6&*t wT  
* @author treeroot t8B==%  
* @since 2006-2-2 ~ym-Szo  
* @version 1.0 &Fl* ,  
*/ :2MHx}]il  
public class InsertSort implements SortUtil.Sort{ 5dhT?/qvc  
y73@t$|  
/* (non-Javadoc) ]ChN]>o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !}Ty"p`  
*/ w]Ci%W(  
public void sort(int[] data) { &uxwz@RC0  
int temp; %|3NCyJ*7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R1\$}ep^  
} ET q~, g'  
} -42jeJS  
} E" b" VB  
vU, ]UJ}  
} %I;iP|/  
+7bV  
冒泡排序: ]39A1&af}  
N,u~ZEI  
package org.rut.util.algorithm.support; f"A?\w @  
,7izrf8  
import org.rut.util.algorithm.SortUtil; !e:HE/&>i  
=#{i;CC%  
/** *M()z.N  
* @author treeroot b+mh9q'5E  
* @since 2006-2-2 AME6Zu3Y  
* @version 1.0 Js!V,={iX  
*/ 30$Q5]T  
public class BubbleSort implements SortUtil.Sort{ W\<p`xHk  
oF#]<Z\  
/* (non-Javadoc) m_r_4BP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #:M)a?E/%  
*/ 1|%C66f^  
public void sort(int[] data) { &B>YiA  
int temp; UP |#WegO  
for(int i=0;i for(int j=data.length-1;j>i;j--){ HtGGcO'bqg  
if(data[j] SortUtil.swap(data,j,j-1); yX;v   
} s~Od(,K  
} 7I<];j  
} F#$[jh$  
} ejC== Fkc  
N;d@)h(N!  
} *27*&&=)H  
:1\QM'O  
选择排序: WjvD C"  
EcW$'>^  
package org.rut.util.algorithm.support; cakb.Q  
C~a- R#  
import org.rut.util.algorithm.SortUtil; W]DZ'  
IMay`us]:8  
/** '74-rL:i  
* @author treeroot o%\pI%  
* @since 2006-2-2 j{u! /FD  
* @version 1.0 *,d>(\&[f  
*/ #35@YMF  
public class SelectionSort implements SortUtil.Sort { J|2OmbJe  
QGV~Y+  
/* ? $LKn2C  
* (non-Javadoc) b ZEyP W  
* !{L`Zd;C>w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +yd(t}H@  
*/ BKQI|i  
public void sort(int[] data) { -wjvD8fL  
int temp; `CQMvX{  
for (int i = 0; i < data.length; i++) { W g2Y`2@t  
int lowIndex = i; l4s_9  
for (int j = data.length - 1; j > i; j--) { tJ,x>s?Y  
if (data[j] < data[lowIndex]) { ?4i:$.A Y  
lowIndex = j; 4#BoS9d2I<  
} =D2x@ank[  
} < l%3P6|  
SortUtil.swap(data,i,lowIndex); ;n,@[v  
} ;Y>cegG\  
} RZeU{u<O  
#]!0$z|Z  
} ^N5BJ'[F:  
H#B~ h4#  
Shell排序: RuHMD"  
9(( QSX  
package org.rut.util.algorithm.support; aGY F\7  
r{gJ[%  
import org.rut.util.algorithm.SortUtil; 4(f4 4' ^  
|Skk1 #  
/** 9ZEF%&58Y  
* @author treeroot //}[(9b'\  
* @since 2006-2-2 /U#{6zeM[,  
* @version 1.0 Xbb('MoI63  
*/ -S7rOq2Li  
public class ShellSort implements SortUtil.Sort{ V_g9oR_  
{D jz']  
/* (non-Javadoc) d M&BnI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t<6`?\Gk  
*/ {IW pI *  
public void sort(int[] data) { nsJN)Pt  
for(int i=data.length/2;i>2;i/=2){ '_~=C-g  
for(int j=0;j insertSort(data,j,i); Ex ?)FL$4  
} `_6!nk q8  
} {{?[b^  
insertSort(data,0,1); @,63%  
} b1}P3W  
4#z@B1Jx  
/** nKJJ7 R L  
* @param data uYPdmrPB?l  
* @param j 8h#/b1\  
* @param i \Om< FH}  
*/ 6uYCU|JsU  
private void insertSort(int[] data, int start, int inc) { z Lw=*  
int temp; VR/>V7*7@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J['paHSF  
} &\$l%icuo  
} &r6VF/  
} ~(xIG  
s|U?{Byb!  
} `V@{#+X  
'[fo  
快速排序: VR>;{>~  
$^Dx4:k<2  
package org.rut.util.algorithm.support; 3+;}2x0-F  
byYdX'd.  
import org.rut.util.algorithm.SortUtil; {@u;F2?  
_-*Lj;^V  
/** BC0T[o(f8  
* @author treeroot x8 sSb:N  
* @since 2006-2-2 `":ch9rK  
* @version 1.0 JU7EC~7|2c  
*/ kne{Tp  
public class QuickSort implements SortUtil.Sort{ g(\FG  
63d' fgVp  
/* (non-Javadoc) L[d 7@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y#_,Ig5.  
*/ d* Y&V$?zl  
public void sort(int[] data) { "qRE1j@%a  
quickSort(data,0,data.length-1); > ln%3 =  
} 9d4PH  
private void quickSort(int[] data,int i,int j){ dlC)&Ai  
int pivotIndex=(i+j)/2; zLlu% Oc  
file://swap M?4)U"_VE  
SortUtil.swap(data,pivotIndex,j); 9}FWO&LiB  
3y%B&W,sm  
int k=partition(data,i-1,j,data[j]); c,1Yxg]|  
SortUtil.swap(data,k,j); ?Ovl(4VG  
if((k-i)>1) quickSort(data,i,k-1); cbl2D5s+i]  
if((j-k)>1) quickSort(data,k+1,j); 1pC!F ;9Oo  
FrO)3 1z  
} Bl-nS{9"  
/** }"<|.[V)  
* @param data tt`j!!  
* @param i _-%A_5lCRE  
* @param j |~bl%g8xP  
* @return [0D( PV(n  
*/ pq6}q($Rk  
private int partition(int[] data, int l, int r,int pivot) { KDW%*%!  
do{ tm~V+t!mj  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); DD\:glo  
SortUtil.swap(data,l,r); I_J;/!l=  
} 0hXI1@8]`  
while(l SortUtil.swap(data,l,r); mu2r#I  
return l; o Q= Q}  
}  KAmv7  
1e*+k$-{  
} *M5 =PQfb  
Y&aFAjj  
改进后的快速排序: *doK$wYP  
pvJ@$L `'  
package org.rut.util.algorithm.support; tFL/zqgm  
&}S#6|[i  
import org.rut.util.algorithm.SortUtil; 1@C0c%  
I|JMkP  
/** zg&<HJO  
* @author treeroot _|xO4{X  
* @since 2006-2-2 "P=OpFV  
* @version 1.0 RV5X0  
*/ Crmxsw.W^Y  
public class ImprovedQuickSort implements SortUtil.Sort { l;: L0(('  
'D8WNZ8Q  
private static int MAX_STACK_SIZE=4096; w1/p wzn  
private static int THRESHOLD=10; U7.3`qd"  
/* (non-Javadoc) ~]DGf(   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qj? +R F6(  
*/ [y| "iSD  
public void sort(int[] data) { GFOd9=[  
int[] stack=new int[MAX_STACK_SIZE]; !@!,7te  
0&Q-y&$7  
int top=-1; Mf%0Cx `  
int pivot; v`MCV29!}  
int pivotIndex,l,r; 0b9K/a%sQv  
I0=YIcH5  
stack[++top]=0; v2:A 4Pd:+  
stack[++top]=data.length-1; zR(}X8fP  
yHl1:cf(y  
while(top>0){ _6&x$ *O  
int j=stack[top--]; ozF>2`K }  
int i=stack[top--];  2&O!<C j  
bR6.Xdt.n  
pivotIndex=(i+j)/2; @Hj5ZJ 3  
pivot=data[pivotIndex]; ./LD  
V& <vRIsN  
SortUtil.swap(data,pivotIndex,j); ^$SI5WK&)  
M ()&GlNs  
file://partition {,tEe'H7  
l=i-1; n5A0E2!  
r=j; 0'`>20Y  
do{ Iodk1Y;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >6Y\CixN  
SortUtil.swap(data,l,r); /=A?O\B7  
} ('pNAn!]  
while(l SortUtil.swap(data,l,r); ~isrE;N1|  
SortUtil.swap(data,l,j); k/YEUC5  
q?g4**C  
if((l-i)>THRESHOLD){ :l8n)O3  
stack[++top]=i; D ::),,  
stack[++top]=l-1; R>U0W{1NO  
} W/9dT^1y4'  
if((j-l)>THRESHOLD){ BRbx.  
stack[++top]=l+1; -;cZW.<  
stack[++top]=j; C1^=se  
} 7A?~a_Ep  
1GKd*z  
} [!p>Id  
file://new InsertSort().sort(data); -?`^^ v  
insertSort(data); = ;#?CAa:  
} DVt;I$  
/** An!1>`8r  
* @param data n=l>d#}$%T  
*/ J`a$"G B.  
private void insertSort(int[] data) { Aa-L<wZVPt  
int temp; fOCLN$x^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;@GlJ '$;  
} yB\}e'J^  
} MW8GM}Ho[  
} 6=s!~  
#z_lBg. K  
} >&3M #s(w  
T1jAY^^I  
归并排序: #L5H-6nz  
R!b<Sg  
package org.rut.util.algorithm.support; 6gV-u~j[#  
2apR7  
import org.rut.util.algorithm.SortUtil; ms8de>A|H  
C-lv=FJEk/  
/** ;75K:_  
* @author treeroot o<bZ.t  
* @since 2006-2-2 `"zXf-qeE  
* @version 1.0 GZ,`?  
*/ m(SGE,("w  
public class MergeSort implements SortUtil.Sort{ ol7%$:S  
TZ{';oU  
/* (non-Javadoc) 0(A`Ia  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hu0z):>y  
*/ E|Mu1I]e  
public void sort(int[] data) { os0fwv  
int[] temp=new int[data.length]; <dl:';@a-  
mergeSort(data,temp,0,data.length-1); 6r{NW9y'  
} ;rZR9fR  
OjTb2[Q  
private void mergeSort(int[] data,int[] temp,int l,int r){ |l)SX\Qf`@  
int mid=(l+r)/2; _SdO}AiG  
if(l==r) return ; ]:jP*0bLx  
mergeSort(data,temp,l,mid); fTd=}zY  
mergeSort(data,temp,mid+1,r); +U{8Mj  
for(int i=l;i<=r;i++){ ;"46H'>!  
temp=data; $Y* d ' >  
} N|-M|1w96  
int i1=l; n4,b?-E>(  
int i2=mid+1; Uo?g@D  
for(int cur=l;cur<=r;cur++){ !qk+>6~A,  
if(i1==mid+1) K8M[xaI@  
data[cur]=temp[i2++]; jsB%RvX  
else if(i2>r) =n .d'  
data[cur]=temp[i1++]; yXP+$oox9  
else if(temp[i1] data[cur]=temp[i1++]; /ap3>xkt  
else ){^o"A?-:  
data[cur]=temp[i2++]; ,]RMa\Q4Wg  
} f Ne9as  
} ))m\d*  
RQhS]y@e  
} =p~k5k4  
tb36c<U-  
改进后的归并排序: TLbnG$VQS  
L!G]i;=:  
package org.rut.util.algorithm.support; /vC|_G|{  
=y+gS%o$  
import org.rut.util.algorithm.SortUtil; &iR3]FNI  
:}(Aq;}X  
/** :_9MS0  
* @author treeroot tN P>6F/  
* @since 2006-2-2 ramYSX@  
* @version 1.0 *UBukn  
*/ RlW0U-%u  
public class ImprovedMergeSort implements SortUtil.Sort { !YX$4_I  
d[K71  
private static final int THRESHOLD = 10; qj|P0N{7  
v$~1{}iI5  
/* Ai>=n;  
* (non-Javadoc) iQs^2z#Bd  
* &w15 GO;4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w]<V~X  
*/ V$wW?+V  
public void sort(int[] data) { LF6PKS  
int[] temp=new int[data.length]; CVUA7eG+  
mergeSort(data,temp,0,data.length-1); *Rm"3S  
} ws}cMX]*  
xAJ N(8?  
private void mergeSort(int[] data, int[] temp, int l, int r) { 9~3;upWu!  
int i, j, k; E%Tpby}^'  
int mid = (l + r) / 2; 4-j3&(  
if (l == r) })#VO-J  
return; T($d3Nn1  
if ((mid - l) >= THRESHOLD) 4mHR+SZy  
mergeSort(data, temp, l, mid); V9KI?}q:W  
else 5PF?Eq   
insertSort(data, l, mid - l + 1); 0 PdeK'7  
if ((r - mid) > THRESHOLD) 80J87\)  
mergeSort(data, temp, mid + 1, r); _A]8l52pt  
else 7Yv1et |  
insertSort(data, mid + 1, r - mid); rgq~lZ.U4K  
Qc4r?7S<  
for (i = l; i <= mid; i++) { @QOlo -u  
temp = data; 1f}YKT  
} ZVu_E.4.  
for (j = 1; j <= r - mid; j++) { QjT$.pU d  
temp[r - j + 1] = data[j + mid]; =n@"lY u[  
} .,({&L  
int a = temp[l]; R:N4_4& C~  
int b = temp[r]; d `MTc  
for (i = l, j = r, k = l; k <= r; k++) { J!{"^^*  
if (a < b) { GgT 5'e;N  
data[k] = temp[i++]; b"4'*<=au  
a = temp; '%Fg+cZN\  
} else { t+9[ki  
data[k] = temp[j--]; -d-vzri  
b = temp[j]; I:|<};m m  
} Fw{:fFZC[  
} h@kq>no  
} WZ@hP'Zc  
rgo#mTQ_  
/** yP<ngi^s=  
* @param data  ujin+;1  
* @param l /$[9-G?  
* @param i 3#\++h]QZ  
*/ s+m3&(X  
private void insertSort(int[] data, int start, int len) { Ga<Uvr%+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Ow" e3]}Mt  
} }>93X0%r  
} 4 H<.  
} r~[Bzw"c  
} nu(;yIRP  
Ppton+?(  
堆排序: mV>l`&K=  
we("#s1=  
package org.rut.util.algorithm.support; '@0Z#A  
#}xw *)3  
import org.rut.util.algorithm.SortUtil; Bm>>-nG;  
rtSG- _[i  
/** ]3D>ai?  
* @author treeroot gPE` mE  
* @since 2006-2-2 iY,Ffu E  
* @version 1.0 ZA1:Y{ V  
*/ ']bw37_U,  
public class HeapSort implements SortUtil.Sort{ ! V^wq]D2  
AONEUSxJ  
/* (non-Javadoc) :  I q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A4~- {.w=  
*/ |l-~,eRvi5  
public void sort(int[] data) { 8NZQTRdH  
MaxHeap h=new MaxHeap(); J#'8]p3E  
h.init(data); }AW"2<@  
for(int i=0;i h.remove();  Y+d+  
System.arraycopy(h.queue,1,data,0,data.length); OA7YWk<K  
} *SK`&V  
$,.XPK5Q u  
private static class MaxHeap{ eG_@WLxwD  
=?3b3PZn  
void init(int[] data){ IRknD3LX  
this.queue=new int[data.length+1]; u~xfI[8C  
for(int i=0;i queue[++size]=data; H8x66}  
fixUp(size); H:#sf][&,L  
} MvKr~  
} =vs]Kmm  
/2f  
private int size=0; RVN;j4uMg  
fsjCu!  
private int[] queue; y9Q #%a8V  
g:fkM{"{  
public int get() { nl-y0xD9c  
return queue[1]; y3 "+4e  
} 5La' I7q  
`nCVO;B  
public void remove() { O#@G .~n?  
SortUtil.swap(queue,1,size--); :Ahw{z`H#  
fixDown(1); J))U YJO  
} fi~jT"_CI  
file://fixdown ,W|cyQ  
private void fixDown(int k) { $L4h'(s  
int j; *Y':raP  
while ((j = k << 1) <= size) { gF>t+"+ x  
if (j < size %26amp;%26amp; queue[j] j++; im3BQIPR  
if (queue[k]>queue[j]) file://不用交换 4%$#   
break; it$w.v+W7V  
SortUtil.swap(queue,j,k); } *jmW P  
k = j; +;ylld  
} I=pFGU  
} |s'5 ~+  
private void fixUp(int k) { i7b^b>B|e  
while (k > 1) { 8|{d1dy  
int j = k >> 1; r i/CLq^D  
if (queue[j]>queue[k]) dw>1Ut{"3  
break; P:>]a$Is  
SortUtil.swap(queue,j,k); 5S*aZ1t18  
k = j; $DlO<  
} Q_)$Ha{>H,  
} r>ag( ^J\  
=[:pm)   
} iv ~<me0F  
7O-fc1OTv  
} P~*'/!@  
FL {$9o\@  
SortUtil: ?J@P0(M#  
7Ucq(,\./  
package org.rut.util.algorithm; &Nw[J5-"k  
CjGQ  
import org.rut.util.algorithm.support.BubbleSort; u[HamGxx$u  
import org.rut.util.algorithm.support.HeapSort; 0V ZC7@  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4(dgunP  
import org.rut.util.algorithm.support.ImprovedQuickSort; :6 qt[(<"  
import org.rut.util.algorithm.support.InsertSort; ?_7iL?  
import org.rut.util.algorithm.support.MergeSort; |va^lT  
import org.rut.util.algorithm.support.QuickSort; 7Bym?  
import org.rut.util.algorithm.support.SelectionSort; 1+#E|YWJ  
import org.rut.util.algorithm.support.ShellSort; N;v]ypak  
+1]A$|qyW  
/** f28bBuv1?  
* @author treeroot f~R+Q/Gtz`  
* @since 2006-2-2 u}.mJDL  
* @version 1.0 >QdT 7gB  
*/ !;UoZ~  
public class SortUtil { nT%ko7~-  
public final static int INSERT = 1; q?qH7={,eu  
public final static int BUBBLE = 2; Qb5@e#  
public final static int SELECTION = 3; "vX\Q rL  
public final static int SHELL = 4; 8+ ]'2{  
public final static int QUICK = 5; P  Ij  
public final static int IMPROVED_QUICK = 6; ?vfZ>7Q  
public final static int MERGE = 7; Am|)\/K+Z  
public final static int IMPROVED_MERGE = 8; <1#hX(Q  
public final static int HEAP = 9; :'FCeS9  
}]Nt:_UCX  
public static void sort(int[] data) { 3RF`F i  
sort(data, IMPROVED_QUICK); U4[GA4DZ   
} 2wJa:=$  
private static String[] name={ #5=W[+4eN  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" CFUn1^?0  
}; [1mEdtqf*  
NwVhJdo  
private static Sort[] impl=new Sort[]{ ]=p^32  
new InsertSort(), BV6B:=E0  
new BubbleSort(), $*:g~#bh  
new SelectionSort(), -ykD/  
new ShellSort(), * ,zrg%8  
new QuickSort(), ^zW=s$\Fo  
new ImprovedQuickSort(), uu.}<VM.1  
new MergeSort(), ?G<ISiABQC  
new ImprovedMergeSort(), u@;e`-@  
new HeapSort() z+{xW7  
}; CEVisKcE:  
!;4Hh)2  
public static String toString(int algorithm){ <I#M^}`  
return name[algorithm-1]; K $WMrp  
} +4Fw13ADE  
Q/q>mN"#1  
public static void sort(int[] data, int algorithm) { B}"V.Msv/  
impl[algorithm-1].sort(data); .K]Uk/W  
} >?#zPweA  
R9(Yi<CC  
public static interface Sort { Dr76+9'i  
public void sort(int[] data); eL<jA9cJ9  
} 7X)4ec9H\  
==BOW\  
public static void swap(int[] data, int i, int j) { Ss0I{0  
int temp = data; 8 C9ny}  
data = data[j]; F B:nkUR`  
data[j] = temp; sm;kg=  
} H@u5&  
} NwxDxIIH/)  
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