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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。 p@xf^[50k  
插入排序: 3@dL /x4A  
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package org.rut.util.algorithm.support; !dyXJ Q  
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import org.rut.util.algorithm.SortUtil; {.C!i{|  
/** v+46 QK|I&  
* @author treeroot 47+&L   
* @since 2006-2-2 o<BOYrS  
* @version 1.0 g{OwuAC_  
*/ _(%d(E2?  
public class InsertSort implements SortUtil.Sort{ 7puFz4+f  
I,>- tGK  
/* (non-Javadoc) 7}f}$1   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8m2Tk\;:  
*/ \<JSkr[h!"  
public void sort(int[] data) { 7K,-01-:  
int temp; m0ER@BXRn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^1iSn)&  
} HHDl8lo  
} WIC/AL'  
} ^Cu\VV  
<"{qk2LS1  
} "c3Grfoz  
*6sl   
冒泡排序: dgR g>)V  
v- T$:cL  
package org.rut.util.algorithm.support; =mS\i663  
_4"mAPt  
import org.rut.util.algorithm.SortUtil; Ixb=L (V  
Wk~W Ozr}^  
/** i6dHrx]:,  
* @author treeroot 5]KW^sL  
* @since 2006-2-2 -I*^-+>H  
* @version 1.0 hL/)|N~  
*/ 4 !i$4  
public class BubbleSort implements SortUtil.Sort{ .L9j>iP9 *  
z.7cy@N6  
/* (non-Javadoc) V=R 3)GC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M2PAy! J  
*/ \|H!~)h$1  
public void sort(int[] data) { d/PiiiFf,  
int temp; K{&mI/ ;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <e Th  
if(data[j] SortUtil.swap(data,j,j-1); >.Chl$)<  
} ![`Ay4AZ@a  
} $@z5kwx:P  
} (!ZM{Js%  
} ^8 zR  
?u{~>  
} SX<` {x&L  
1n=lqn/  
选择排序: 2)G %)'  
hBS.a6u1'd  
package org.rut.util.algorithm.support; <Wfx+F  
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import org.rut.util.algorithm.SortUtil; ,5i`-OI  
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/** 8K.R=  
* @author treeroot ?{/4b:ua  
* @since 2006-2-2 6VS4y-N  
* @version 1.0 3vuivU.3  
*/ J3e96t~u  
public class SelectionSort implements SortUtil.Sort { M$y+q ^  
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/* O[I\A[*  
* (non-Javadoc) /M|2 62%  
* <oR a3Gi(%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /j4P9y^]=  
*/ G}:w@}h/  
public void sort(int[] data) { Z3#P,y9@  
int temp; RX>xB  
for (int i = 0; i < data.length; i++) { 24E}<N,g  
int lowIndex = i; syWG'( >  
for (int j = data.length - 1; j > i; j--) { `);AW(Q  
if (data[j] < data[lowIndex]) { xAK6pDp  
lowIndex = j; >[9J?H  
} 0O9Ni='Tn  
} 43|XSyS  
SortUtil.swap(data,i,lowIndex); +aJ>rR  
} ,VCyG:dw  
} v9:9E|,U+  
ur3(HL  
} HW=C),*]cR  
(MR_^t  
Shell排序: '_GrD>P)-  
H| 8Qp*  
package org.rut.util.algorithm.support; tZ'|DCT  
mp=z  
import org.rut.util.algorithm.SortUtil; U* i{5/$  
8kU! 8^mH  
/** /LvRP yj@  
* @author treeroot $* AYcy7  
* @since 2006-2-2 eZSNNgD<:  
* @version 1.0 qHuZcht  
*/ %e-7ubW  
public class ShellSort implements SortUtil.Sort{ e4!:c^?  
<g1hxfKx5  
/* (non-Javadoc) t/cY=Wp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ht2\y&si  
*/ t; 4]cg:_  
public void sort(int[] data) { L;*ljZ^c  
for(int i=data.length/2;i>2;i/=2){ _JHd9)[  
for(int j=0;j insertSort(data,j,i); eM$sv9?  
} d Vj_8>  
} *A"~m !=  
insertSort(data,0,1); =T(6#"  
} "t (p&;d  
fQi4\m  
/** hEBY8=gK  
* @param data vhpNpgz  
* @param j #~7ip\Uf[  
* @param i cki81bOT  
*/ 2 lj'"nm  
private void insertSort(int[] data, int start, int inc) { 5Ow[~p"l<  
int temp; <,[cQ I/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); t=Xv;=daB  
} do*EKo  
} JT3-AAi[Z  
} )L#i%)+  
)(ImLbM)  
} :-/M?,Q"  
8,C*4y~  
快速排序: 2w["aVr =  
H5Z$*4%G  
package org.rut.util.algorithm.support; )n2 re?S  
bn!HUM,  
import org.rut.util.algorithm.SortUtil; lfqiyYFm  
,.kha8v  
/** +y&Tf#.V/A  
* @author treeroot 8=NM|i  
* @since 2006-2-2 _F$aUtb%O  
* @version 1.0 V:VO[e<e  
*/ Bj1?x  
public class QuickSort implements SortUtil.Sort{ n[G&ksQI  
>'&p>Ad)  
/* (non-Javadoc) xlA$:M&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [8T^@YN  
*/ I'uSp-Sfy  
public void sort(int[] data) { VXR>]HUF  
quickSort(data,0,data.length-1); BT}!W`  
} #,":vr  
private void quickSort(int[] data,int i,int j){ W g02 A\  
int pivotIndex=(i+j)/2; ;#vKi0V7  
file://swap BYVY)<v/  
SortUtil.swap(data,pivotIndex,j); k'Sp.  
8B\2Zfe  
int k=partition(data,i-1,j,data[j]);  ?zw|kl  
SortUtil.swap(data,k,j); TFkZpe;  
if((k-i)>1) quickSort(data,i,k-1); /5Oa,NS7  
if((j-k)>1) quickSort(data,k+1,j); va}Pj#=  
56zL"TF`  
} *>n;SuT_  
/** Kx;eaz:gx  
* @param data Y]/% t{Y  
* @param i +n{#V;J  
* @param j i{`FmrPO~  
* @return l5Gq|!2yxD  
*/ amOnqH-(  
private int partition(int[] data, int l, int r,int pivot) { c'%-jG)\  
do{ `(_s|-$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >z%&xgOa  
SortUtil.swap(data,l,r); <}<zgOT[1!  
} [AYOYENp-  
while(l SortUtil.swap(data,l,r); '8!Y D?n  
return l; /s@oZ{h  
} 5=v}W:^v.  
nD`w/0hT<  
} WST8SEzJ  
{khqu:HUn`  
改进后的快速排序: y\Ic@-aWI  
5nT"rA  
package org.rut.util.algorithm.support;  >qS9PX  
`6lr4Kk @R  
import org.rut.util.algorithm.SortUtil; ts\5uiB<%  
>7I15U  
/** 'EbWFMjy  
* @author treeroot qf!p 9@4F[  
* @since 2006-2-2 9N@W\DT  
* @version 1.0 ?OcJ )5C4  
*/ j27?w<  
public class ImprovedQuickSort implements SortUtil.Sort { VH9dleZ  
%?}33yV  
private static int MAX_STACK_SIZE=4096; "D63I|O)  
private static int THRESHOLD=10; bCo7*<I4  
/* (non-Javadoc) X-6de>=   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,l !Ta "  
*/ `o=q%$f#k~  
public void sort(int[] data) { p1Jh0o8  
int[] stack=new int[MAX_STACK_SIZE]; AK'[c+2[  
Q.l}NtHwV  
int top=-1; YC++& Nk  
int pivot; ^hc!FD  
int pivotIndex,l,r; )bS yB29S  
>/l? g5{  
stack[++top]=0; 2oVSn"  
stack[++top]=data.length-1; zHA!%>%'  
:r{<zd>;  
while(top>0){ hs^zTZ_  
int j=stack[top--]; 5gYRwuf  
int i=stack[top--]; \.MR""@y`{  
%j.0G`x9 +  
pivotIndex=(i+j)/2; O_ `VV*  
pivot=data[pivotIndex]; I'A_x$ib6  
pMw*9s X  
SortUtil.swap(data,pivotIndex,j); t^+ik1.  
 _zY# U9  
file://partition ]{3)^axW;  
l=i-1; idLWe9gC  
r=j; _ TiuY  
do{ z[b@ V  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); aS{|uE]  
SortUtil.swap(data,l,r); W0dSsjNio  
} $ `ov4W  
while(l SortUtil.swap(data,l,r); Q_"]+i]s@  
SortUtil.swap(data,l,j); aOlT;h  
dq(uVW^&ae  
if((l-i)>THRESHOLD){ @i 2E\}  
stack[++top]=i; J"!vu.[  
stack[++top]=l-1; %KsEB*' "  
} j'Gt&\4  
if((j-l)>THRESHOLD){ C[ NS kr  
stack[++top]=l+1; '*K:  lx  
stack[++top]=j; 7I&&bWB  
} /5S30 |K  
qX/y5F`  
} i+A3~w5c  
file://new InsertSort().sort(data); ?4+9fE<Q  
insertSort(data); :0Bq^G"ge  
} Z_$%.  
/** /NLui@|R  
* @param data BBaQ}{F8>2  
*/ 52%2R]G!  
private void insertSort(int[] data) { C uFSeRe  
int temp; CNih6R  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); | z9*GY6RU  
} E%yNa]\P  
} 1#C4;3i,  
} +NeOSQSj  
(jnQ -  
} 3-[q4R  
8NxM4$nQX  
归并排序: @ju@WY45$^  
CnU*Jb  
package org.rut.util.algorithm.support; pM+ AjPr  
A#K14Ayr  
import org.rut.util.algorithm.SortUtil; lNy.g{2f<m  
c?tBi9'Y]  
/** ,`|3KE9  
* @author treeroot "7 4-4  
* @since 2006-2-2 sGi"rg#  
* @version 1.0 Us)Z^s  
*/ 4qO+_!x{)  
public class MergeSort implements SortUtil.Sort{ KT_!d*  
y0{u<"t%w  
/* (non-Javadoc) RU'=ERYC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -c_74c50  
*/ {'N Z.  
public void sort(int[] data) { p09HL%~R  
int[] temp=new int[data.length]; DjCqh-&L  
mergeSort(data,temp,0,data.length-1); ~d o9;8v  
} rxVanDb=W  
-j+UMlkB  
private void mergeSort(int[] data,int[] temp,int l,int r){ XR8,Vt)=  
int mid=(l+r)/2; +dWDxguE{w  
if(l==r) return ; Bgn&:T8<  
mergeSort(data,temp,l,mid); rDD:7*z  
mergeSort(data,temp,mid+1,r); p?{Xu4(  
for(int i=l;i<=r;i++){ 7G:s2432  
temp=data; }'5MK  
} nii A7Ux  
int i1=l; 3YeG$^y"  
int i2=mid+1; >] qc-{>&  
for(int cur=l;cur<=r;cur++){ xN>npP   
if(i1==mid+1) ) mI05  
data[cur]=temp[i2++]; N/[p <  
else if(i2>r) aFc1|.Nm  
data[cur]=temp[i1++]; dah[:rP,n{  
else if(temp[i1] data[cur]=temp[i1++]; Yw22z #K  
else G[B=>Cy  
data[cur]=temp[i2++]; 2`AY~i9  
} 0v6)t.]s  
} iMt:9|yF}8  
_ ?TN;  
} d4m=0G`  
wJg1Y0nh  
改进后的归并排序: ~{*7"o/  
AG3>V+k{Lv  
package org.rut.util.algorithm.support; +y,T4^{  
t![7uU.W  
import org.rut.util.algorithm.SortUtil; HvUxsdT  
&w4?)#  
/** g-qP;vy@"q  
* @author treeroot anuL1f XO  
* @since 2006-2-2 osciZ'~  
* @version 1.0 TSA,WP\  
*/ :fKl]XO  
public class ImprovedMergeSort implements SortUtil.Sort { ,V'o4]H  
jy7\+i  
private static final int THRESHOLD = 10; v.\*./-i  
sD<a+Lw}x  
/* fTzvmC:g7  
* (non-Javadoc) oYHj~t  
* @<<<C?CTv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $JSL-NkE  
*/ -T!f,g3vW  
public void sort(int[] data) { gep;{G}  
int[] temp=new int[data.length]; R FKtr  
mergeSort(data,temp,0,data.length-1); yZd +^QN  
} \:R%4w#Jv  
kTKq/G,Ft  
private void mergeSort(int[] data, int[] temp, int l, int r) { #1J &7F1  
int i, j, k; ,?PTcQF  
int mid = (l + r) / 2; YX%[ipgB  
if (l == r) U -Y03  
return; 85lCj-cs  
if ((mid - l) >= THRESHOLD) %lL.[8r|  
mergeSort(data, temp, l, mid); tM2)k+fg  
else tzZ63@cm  
insertSort(data, l, mid - l + 1); 3WN`y8l  
if ((r - mid) > THRESHOLD) /`9sPR6e  
mergeSort(data, temp, mid + 1, r); {-ZFp  
else MRQ.`IoS  
insertSort(data, mid + 1, r - mid); UYFwS/ RW}  
Y_}mYvJW  
for (i = l; i <= mid; i++) {  rL/H2[d  
temp = data; Gn&-X]Rrl  
} ^L0d/,ik  
for (j = 1; j <= r - mid; j++) { o5xAav"+>  
temp[r - j + 1] = data[j + mid]; :iFIQpk  
} #u2J;9P  
int a = temp[l]; nv)2!mAh\  
int b = temp[r]; @|LBn6q  
for (i = l, j = r, k = l; k <= r; k++) { %509\;el  
if (a < b) { 3Uqr,0$p  
data[k] = temp[i++]; 'iy*^A `Y  
a = temp; ;_8#f%Y#R  
} else { dlU'2Cl7d  
data[k] = temp[j--]; MzPzqm<  
b = temp[j]; qe#P?[  
} GRMiQa  
} Jm|+-F@I  
} ?!wgH9?8  
wpN k+;  
/** ZPc@Zr`z  
* @param data $f,n8]  
* @param l *J$=.fF1  
* @param i Av?2<  
*/ VmCW6 G#M  
private void insertSort(int[] data, int start, int len) { !(q sD+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); GQ*wc?f3  
} :}r.  
} ~)qtply  
} tBNoI  
} _nD$b={g  
cHcmgW\4  
堆排序: bgS$ {n/  
FW) x:2BG  
package org.rut.util.algorithm.support; Gq_-Val]"  
T(AVlI6  
import org.rut.util.algorithm.SortUtil; cUqke+!  
<cZGxff01  
/** $KUo s+%  
* @author treeroot IGS1|  
* @since 2006-2-2 }K1JU`Lz  
* @version 1.0 on0]vEE  
*/ 4&xZ]QC)O5  
public class HeapSort implements SortUtil.Sort{ 1^ _U;O:I  
4 SHU  
/* (non-Javadoc) A 6OGs/:&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *5 |)-E  
*/ CqHK%M  
public void sort(int[] data) { \\{J'j>{f  
MaxHeap h=new MaxHeap(); 5nTY ?<x`k  
h.init(data); #Y0-BYa^  
for(int i=0;i h.remove(); @Ys!DScY,  
System.arraycopy(h.queue,1,data,0,data.length); [01.\eh  
} TT50(_8  
&LF` W  
private static class MaxHeap{ TpmwD{c[\  
bV edFm  
void init(int[] data){ cE`6uq7 p  
this.queue=new int[data.length+1]; S!Omy:=;i  
for(int i=0;i queue[++size]=data; %{(x3\ *&  
fixUp(size); e{X6i^% m_  
} 1x @qkL6  
} |} {B1A  
|+35y_i6  
private int size=0; < 'f dkW  
: p{+G  
private int[] queue; Ma'_e=+A  
CT KG9 T  
public int get() { NE/m-ILw  
return queue[1]; W%.v.0   
} fV v.@HL{  
pl5P2&k  
public void remove() { ?OE.O/~l  
SortUtil.swap(queue,1,size--); :(a]V"(&Eq  
fixDown(1); |o2sbLp  
} !L;\cl  
file://fixdown 4Ue_Y 'LmM  
private void fixDown(int k) { Xg=x7\V  
int j; G0`h%  
while ((j = k << 1) <= size) { za:a)U^n  
if (j < size %26amp;%26amp; queue[j] j++; ot`%*  
if (queue[k]>queue[j]) file://不用交换 :}h>by=  
break; }w/;){gu  
SortUtil.swap(queue,j,k); cFN'bftH4  
k = j; ) c/% NiN  
} (]RM6i7  
} ~`GhS<D  
private void fixUp(int k) { K]qM~v<A  
while (k > 1) { zF@o2<cD@  
int j = k >> 1; gP-nluq  
if (queue[j]>queue[k]) rUlS'L;$"  
break; b1gaj"]  
SortUtil.swap(queue,j,k); g ^!C  
k = j; C@Nv;;AlU  
} 8 F2|  
} ^9_U Uzf\  
l{:a1^[>y  
} xrqv@/kJ  
/w8"=6Vv~  
} &m {kHM  
tM,%^){p$  
SortUtil: ESg+n(R  
rZojY}dWJ  
package org.rut.util.algorithm; WKpA|  
dl5=q\1=  
import org.rut.util.algorithm.support.BubbleSort; QN>7~=`  
import org.rut.util.algorithm.support.HeapSort; Y4F6qyP)"  
import org.rut.util.algorithm.support.ImprovedMergeSort; MlJVeod  
import org.rut.util.algorithm.support.ImprovedQuickSort; '~ 4pl0TWc  
import org.rut.util.algorithm.support.InsertSort; EQIUSh)M  
import org.rut.util.algorithm.support.MergeSort; oyk>vIZ  
import org.rut.util.algorithm.support.QuickSort; R0;ef D  
import org.rut.util.algorithm.support.SelectionSort; 1z*kc)=JF8  
import org.rut.util.algorithm.support.ShellSort; $&Kq*m 0g  
>r)X:K+I  
/** v8/6wy?  
* @author treeroot |!H?+Jj:  
* @since 2006-2-2 ?-OPX_i_  
* @version 1.0 F52B~@ .  
*/ 9p@C4oen  
public class SortUtil { zSv^<`X3  
public final static int INSERT = 1; [4+q+  
public final static int BUBBLE = 2; 6  P`)%zj  
public final static int SELECTION = 3; $ P: O/O=>  
public final static int SHELL = 4; g,]@4|  
public final static int QUICK = 5; J^m<*  
public final static int IMPROVED_QUICK = 6; 9 L?;FY)_  
public final static int MERGE = 7; Y-~~,Yl~  
public final static int IMPROVED_MERGE = 8; Nf9fb?  
public final static int HEAP = 9; rS*$rQCr=  
u-DK_^v4M  
public static void sort(int[] data) { O'NW Ebl/  
sort(data, IMPROVED_QUICK); {13!vS%5  
} IeF keE  
private static String[] name={ VY+>=!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8cm@a*2%  
}; 9.M{M06;  
$R^AEa7  
private static Sort[] impl=new Sort[]{ :Dl% _l  
new InsertSort(), +&ZX$  
new BubbleSort(), NvtM3  
new SelectionSort(), 0y %L-:/c|  
new ShellSort(), !rTmR@e$/  
new QuickSort(), ])y{BlZ  
new ImprovedQuickSort(), m-1?\bs  
new MergeSort(), o;`!kIQ  
new ImprovedMergeSort(), b>cafu  
new HeapSort() ~%y\@x7I  
}; `1p 8C%  
$W!]fcZlB  
public static String toString(int algorithm){ K5ZnS`c;  
return name[algorithm-1]; D\]&8w6&  
} 3;$bS<>  
X<MpN5%|Wo  
public static void sort(int[] data, int algorithm) { +lp{#1q0  
impl[algorithm-1].sort(data); C ?H{CP  
} WPY8C3XO  
RfbdBsL  
public static interface Sort { LXhaD[1Rb  
public void sort(int[] data); <jd/t19DB  
} 'M%5v'$y  
gM_:l  
public static void swap(int[] data, int i, int j) { rB]W,8~%  
int temp = data; /)1v9<vM"  
data = data[j]; e)pTC97^L  
data[j] = temp; 4DML  
} 3@X7YgILU  
} aR(E7mXQ  
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