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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。 >GDN~'}^oz  
插入排序: %]DJ-7 xE  
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package org.rut.util.algorithm.support; {7Ez7'SVV  
ctC! b{S"@  
import org.rut.util.algorithm.SortUtil; kZ_5R#xK  
/** ~o ;*{ Q  
* @author treeroot YF");itH  
* @since 2006-2-2 `Oi6o[a  
* @version 1.0 n@e|PWu  
*/ $/i;UUd  
public class InsertSort implements SortUtil.Sort{ doe u`  
( (mNB]sy  
/* (non-Javadoc) ;#D:S6 L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %}~Ncn_r  
*/ 0Ioa;XgOn  
public void sort(int[] data) { ]\R%@FCYc  
int temp; }WkR-5N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T8QRO%t  
} :'dH)yO  
} W{'tS{  
} ! +Hc(i  
!Ys.KDL  
} x:Tm4V{  
Ps MCs|*  
冒泡排序: Qgv-QcI{  
/Big^^u  
package org.rut.util.algorithm.support; QXT *O  
oY%NDTVN  
import org.rut.util.algorithm.SortUtil; Jo ]8?U(^  
_q\w9gN  
/** Q_R&+@ju  
* @author treeroot (OK;*ZH+T@  
* @since 2006-2-2 G0h7MO%x  
* @version 1.0 bl B00   
*/ 4[]4KKO3Q2  
public class BubbleSort implements SortUtil.Sort{ @xtfm.}  
au1(.(  
/* (non-Javadoc) C@ z^{Z+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \xaK?_hv  
*/ g*#.yC1/  
public void sort(int[] data) { hI 1 }^;  
int temp; E^jb#9\R  
for(int i=0;i for(int j=data.length-1;j>i;j--){ m]U`7!  
if(data[j] SortUtil.swap(data,j,j-1); ny~~xQ"  
} aTY\mKk  
} M>g\Y  
} t7DT5SrR  
} V`"A|Y  
3+jqf@fO  
} 9a9{OJa6M  
*] cm{N  
选择排序: rfMzHY}%  
MY}B)`yx=  
package org.rut.util.algorithm.support; Ey;uaqt  
7l3sd5  
import org.rut.util.algorithm.SortUtil; n P4DHb&5  
dAcy;-[[P  
/** ',p`B-dw  
* @author treeroot h{cJ S9e}  
* @since 2006-2-2 toCT5E_0=  
* @version 1.0 * <_8]C0>  
*/ VS\~t  
public class SelectionSort implements SortUtil.Sort { qMe$Qr8  
9rmOf Jo:  
/* It@.U|  
* (non-Javadoc) ZtfPB  
* mMvt#+O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B@Q Ate7   
*/ 4`7:gfrO,  
public void sort(int[] data) { h~ =UFE%'  
int temp; =7mn= w?  
for (int i = 0; i < data.length; i++) { W]rK*Dc  
int lowIndex = i; !1}A\S  
for (int j = data.length - 1; j > i; j--) { q~=]_PMP  
if (data[j] < data[lowIndex]) { _ZfJfd~  
lowIndex = j; rBZ 0(XSZQ  
} FHS6Mk26  
} y  ZsC>  
SortUtil.swap(data,i,lowIndex); n_51-^* z  
} 64>o3Hb2  
} +mN]VO*y  
-P<e-V%<  
} PSQ5/l?\>  
Tn qspS2;R  
Shell排序: Hinz6k6!  
viT/$7`AI  
package org.rut.util.algorithm.support; >I3#ALF  
{? jr  
import org.rut.util.algorithm.SortUtil; O&?i8XsB  
Q!:J.J  
/** iC`K$LY4W  
* @author treeroot !e >EDYbY  
* @since 2006-2-2 N(W ;(7  
* @version 1.0 [s4lSGh  
*/ w"O^CR)  
public class ShellSort implements SortUtil.Sort{ /bj D*rj  
K -!YD}OF  
/* (non-Javadoc) XOzd{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S& % G B  
*/ %klC& _g~_  
public void sort(int[] data) { mh"&KX86W  
for(int i=data.length/2;i>2;i/=2){ lmZ Ssx  
for(int j=0;j insertSort(data,j,i); Wej8YF@  
} T,,,+gPx  
} S3u>a\  
insertSort(data,0,1); '8v^.gZ  
} ~JsTHE$F  
Ax4nx!W,   
/** '@h5j6:2  
* @param data Bg*Oj)NM  
* @param j }^;Tt-*k  
* @param i %+U.zd$  
*/ H\7Qf8s|{  
private void insertSort(int[] data, int start, int inc) { %B$~yx3#  
int temp; A7|!&fi  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wvum7K{tI  
} )Ab!R:4  
} F{a--  
} y8uB>z+#+;  
t/\J  
} ++Qg5FukR  
Cyg\FHs  
快速排序: WUSkN;idVG  
hTZaI*  
package org.rut.util.algorithm.support; pDO&I]S`q0  
8o-*s+EY"&  
import org.rut.util.algorithm.SortUtil; :yo tpa  
`w1|(Sk$h  
/** cTpAU9|(  
* @author treeroot j_VTa/  
* @since 2006-2-2 _Kg:jal  
* @version 1.0 mr]IxTv  
*/ ({g7{tUy^H  
public class QuickSort implements SortUtil.Sort{ ;#G)([  
A>8uLO G}  
/* (non-Javadoc) 445}Yw5;9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =#||&1U$  
*/ Q<.84 7 )  
public void sort(int[] data) { 2XubM+6  
quickSort(data,0,data.length-1); 8r7~ >p~  
} h\ema|  
private void quickSort(int[] data,int i,int j){ 5"=qVmT)  
int pivotIndex=(i+j)/2; | -l)$i@  
file://swap %Ji@\|Zkf  
SortUtil.swap(data,pivotIndex,j); z{w!yMp"  
/l-lkG5  
int k=partition(data,i-1,j,data[j]); vq|o}6Et  
SortUtil.swap(data,k,j); ?'_E$  
if((k-i)>1) quickSort(data,i,k-1); =^m,|j|d>4  
if((j-k)>1) quickSort(data,k+1,j); &)@|WLW  
B>}=x4-8  
} $IzhaX  
/** fGDR<t3yiQ  
* @param data sf\p>gb  
* @param i 47b=>D8  
* @param j <\< [J0  
* @return 5T)qn`%  
*/ y -j3d)T  
private int partition(int[] data, int l, int r,int pivot) { O)78 iEXi|  
do{ _Gv[ D  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); I;]Q}SUsm  
SortUtil.swap(data,l,r); S3rN]!B+  
} <RfPd+</  
while(l SortUtil.swap(data,l,r); }=CL/JHz  
return l; ?z>7&  
} E?1"&D m  
kXGJZ$  
} ;*K@8GnU  
1Uzsw  
改进后的快速排序: >6ul\xMU  
v|:2U8YREf  
package org.rut.util.algorithm.support; eHUr!zH:  
\^O#)&5 V  
import org.rut.util.algorithm.SortUtil; WVUa:_5{  
c+:LDc3!Gb  
/** m%Ah]x;  
* @author treeroot AsyJDt'i  
* @since 2006-2-2 B -XM(C j  
* @version 1.0 Ff xf!zS  
*/ X_yAx)Do  
public class ImprovedQuickSort implements SortUtil.Sort { Gzxq] Mg  
jU\vg;nr  
private static int MAX_STACK_SIZE=4096; ?;Ck]l#5ys  
private static int THRESHOLD=10; +cS%b}O`$  
/* (non-Javadoc) -F.A1{l[.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '|mVY; i[  
*/ ))Ws{  
public void sort(int[] data) { 0J-]  
int[] stack=new int[MAX_STACK_SIZE]; {kGcZf3h  
dc[w`  
int top=-1; (\^| @  
int pivot; H4[];&]xr  
int pivotIndex,l,r; DK8eFyG^2  
 AnK-\4  
stack[++top]=0; 5g9lO]WDI  
stack[++top]=data.length-1; 4FK|y&p4r  
oG5 :]/F  
while(top>0){ q3a`Y)aVB  
int j=stack[top--]; FV>j !>Y  
int i=stack[top--]; am >X7  
y5;l?v94  
pivotIndex=(i+j)/2; $2u^z=`b!%  
pivot=data[pivotIndex]; HPT{83  
\*{tAF  
SortUtil.swap(data,pivotIndex,j); IR ; DdF  
^fVLM>p<;  
file://partition N|cWTbi  
l=i-1; ,MkldCV  
r=j; K:Mm?28s  
do{ P|mV((/m4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2 MFGKzO  
SortUtil.swap(data,l,r); *~b3FLzq  
} n3w(zB  
while(l SortUtil.swap(data,l,r); ?' F>DN  
SortUtil.swap(data,l,j); "Uy==~  
)aY^k|I  
if((l-i)>THRESHOLD){ n{oRmw-  
stack[++top]=i; TG ,T>'   
stack[++top]=l-1; 72oiO[>N'  
} B^'Uh+Y  
if((j-l)>THRESHOLD){ x|B$n } B  
stack[++top]=l+1; HF@K$RPK  
stack[++top]=j; 3,qq\gxB  
} 99Jk<x k  
4 j9  
} uMW5F-~-+  
file://new InsertSort().sort(data); b"x[+&%i  
insertSort(data); q^nSYp#  
} B{IYVviiP  
/** 7gIK+1`  
* @param data jA ?tDAx`  
*/ Fa]fSqy@;  
private void insertSort(int[] data) { 'M"JF;*r  
int temp; pyPS5vWG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Of| e]GR  
} = ~{n-rMF  
} BzFD_A>j;_  
} V&)lS Qw  
+QS7F`O  
} B-63IN  
&mebpEHUG7  
归并排序: ppcuMcR{  
[5&zyIi  
package org.rut.util.algorithm.support; wm@ />X  
1S !<D)n  
import org.rut.util.algorithm.SortUtil; hR;J#w  
6*@\Qsp615  
/** "52nT  
* @author treeroot mG,%f"b0  
* @since 2006-2-2 7ky$9+~  
* @version 1.0 DwTqj=l  
*/ J7. }2  
public class MergeSort implements SortUtil.Sort{ b"Ep?=*5  
qK ,mG {  
/* (non-Javadoc) ~'/I[y4t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Pc>/lY$Q%  
*/ oYWcX9R  
public void sort(int[] data) { /$OX'L&b  
int[] temp=new int[data.length]; cE x$cZRMI  
mergeSort(data,temp,0,data.length-1); bI^zwK,@4  
} ?H9F"B$a  
Up|\&2_  
private void mergeSort(int[] data,int[] temp,int l,int r){ {.7ve<K  
int mid=(l+r)/2; % I]?xe6  
if(l==r) return ; QC:/xP  
mergeSort(data,temp,l,mid); ns.[PJ"8  
mergeSort(data,temp,mid+1,r); 4uip!@$K  
for(int i=l;i<=r;i++){ F\. n42Tz  
temp=data; Gmcx#?|Tx  
} 0 `X%&  
int i1=l; ]Y[8|HJ8  
int i2=mid+1; s)]Z*#ZZ  
for(int cur=l;cur<=r;cur++){ |=.z0{A7H  
if(i1==mid+1) UXB[3SP  
data[cur]=temp[i2++]; ^&t(O1.-  
else if(i2>r) p9<OXeY   
data[cur]=temp[i1++]; X-di^%<  
else if(temp[i1] data[cur]=temp[i1++]; 7lpd$Y  
else ?v2OoNQ   
data[cur]=temp[i2++]; b~ ?TDm7  
} 5*1wQlL  
} ?U0iHg{  
zO>N3pMv  
} u!2.[CV  
qx5X2@-;:  
改进后的归并排序: ~B%EvG7:n  
8|[\Tp:;  
package org.rut.util.algorithm.support; 9/w'4bd  
/2oTqEqaV  
import org.rut.util.algorithm.SortUtil; =$5[uI2  
xJ9_#$ngeM  
/** =5&)^  
* @author treeroot Yfy6o6*:  
* @since 2006-2-2 yy?|q0  
* @version 1.0 2]NP7Ee8 Z  
*/ ( DwIAO/S  
public class ImprovedMergeSort implements SortUtil.Sort {  $J mL)r  
U-TwrX  
private static final int THRESHOLD = 10; e#k9}n^+  
S6H=(l58  
/* pooi8" G  
* (non-Javadoc) fD q, )~D  
* xy$FS0u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 14\%2nE  
*/ \{da|n -  
public void sort(int[] data) { "}K/ b  
int[] temp=new int[data.length]; UA,&0.7  
mergeSort(data,temp,0,data.length-1); )T#;1qNB  
} ,?B.+4CW\E  
W<2%J)N<  
private void mergeSort(int[] data, int[] temp, int l, int r) { X5wS6v)#(  
int i, j, k; Hi|2z5=V  
int mid = (l + r) / 2; G"MpA[a_  
if (l == r) @.*[CC;&  
return; .mDqZOpf=4  
if ((mid - l) >= THRESHOLD) YH<F~F _  
mergeSort(data, temp, l, mid); 2xe_Q70II  
else ~B(]0:  
insertSort(data, l, mid - l + 1); j %TYyL-  
if ((r - mid) > THRESHOLD) j`BF k>  
mergeSort(data, temp, mid + 1, r); p{Pa(Z]G  
else '! 1ts@  
insertSort(data, mid + 1, r - mid); 1`O`!plD+  
CX':nai  
for (i = l; i <= mid; i++) { j)-D.bY0  
temp = data; yN3Tk}{V  
} JIb<>X,  
for (j = 1; j <= r - mid; j++) { 1>%SSQ  
temp[r - j + 1] = data[j + mid]; *, *"G?  
} q'(WIv@  
int a = temp[l]; #C+Gk4"w  
int b = temp[r]; JF{,;&sj  
for (i = l, j = r, k = l; k <= r; k++) { Wlg(z%  
if (a < b) { YfMe69/0I  
data[k] = temp[i++]; =_":Z!_  
a = temp; +crAkb}i  
} else { LOnhFX   
data[k] = temp[j--]; 2)j\Lg_M  
b = temp[j]; iLmU|jdE  
} %4 SREq  
} G)# ,39P  
} "[[fQpe4@  
W$'pUhq\H  
/** rG\m]C3E  
* @param data o B6" D  
* @param l !5B9:p~-  
* @param i fykN\b  
*/ ,6M-xSDs  
private void insertSort(int[] data, int start, int len) { ='VIbE@qC  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *0c }`|  
} 5)nv  
} zl: u@!'  
} Tby+Pd;  
} mCz6&  
dlT\VWMha(  
堆排序: `|/|ej]$P  
ZH0f32K  
package org.rut.util.algorithm.support; ("lcL2Bq  
. \d0lJSr  
import org.rut.util.algorithm.SortUtil; }TF<C !]  
&)X<yd0  
/** %ly;2H Ik  
* @author treeroot :%>8\q>UX  
* @since 2006-2-2 XS!ZTb>[  
* @version 1.0 cbwzT0  
*/ D46| )-  
public class HeapSort implements SortUtil.Sort{ 8uT6QCf  
'I<j`)4`d  
/* (non-Javadoc) K[kmfXKu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O ,>&w5   
*/ @[FFYVru  
public void sort(int[] data) { {``}TsN  
MaxHeap h=new MaxHeap(); 2ga}d5lu  
h.init(data); X,fTzkGj  
for(int i=0;i h.remove(); DA wzXsx  
System.arraycopy(h.queue,1,data,0,data.length); <Z__Q  
} ZH}NlEn  
sY6'y'a95  
private static class MaxHeap{ IRU2/Ycg  
ua[\npz5  
void init(int[] data){ F0JFx$AoD  
this.queue=new int[data.length+1]; z<fEJN  
for(int i=0;i queue[++size]=data; _@p|A  
fixUp(size); f2u2Ns0Ym  
} &q< 8tTW5  
} sy`s$E d!  
`o3d@Vc  
private int size=0; )aC+qhh  
EsWszpRqb  
private int[] queue; j41:]6  
*nc4X9  
public int get() {  KC(Ug4  
return queue[1]; L)+ eM&W  
} &\H5*A.HkA  
l xfdJNb  
public void remove() { iN*>Z(b"  
SortUtil.swap(queue,1,size--); Vj]kJ,j\y  
fixDown(1); B1M/5cr.  
} 3k<#;(  
file://fixdown  d!t@A  
private void fixDown(int k) { ,$]q2aL  
int j; |gVO Iq  
while ((j = k << 1) <= size) { [5VUcXGt*\  
if (j < size %26amp;%26amp; queue[j] j++; PsgzDhRv  
if (queue[k]>queue[j]) file://不用交换 ~ YK <T+  
break; $Y`aS^IW  
SortUtil.swap(queue,j,k); *o[%?$8T  
k = j; l0&8vhw8k  
} Wj:QC<5 v  
} H5s85"U#  
private void fixUp(int k) { <J)A_Kx[57  
while (k > 1) { h9I )<_}R  
int j = k >> 1; is(!_Iv  
if (queue[j]>queue[k]) FZ9<Q  
break; Fsf22  
SortUtil.swap(queue,j,k); +V@=G &Ou0  
k = j; aAri  
} {h"\JI!  
} 2eU[*x  
J,O@T)S@  
} k&/ )g3(N(  
.( h$@|Y  
} <L~xR5  
/[? F1Q  
SortUtil: U!/nD~A  
y!gM)9vq  
package org.rut.util.algorithm; O->eg  
Z0eBx  
import org.rut.util.algorithm.support.BubbleSort; _vdxxhJ=P3  
import org.rut.util.algorithm.support.HeapSort; pq3  A%|  
import org.rut.util.algorithm.support.ImprovedMergeSort; xLI{=sL  
import org.rut.util.algorithm.support.ImprovedQuickSort; HY4E  
import org.rut.util.algorithm.support.InsertSort; el?V2v[  
import org.rut.util.algorithm.support.MergeSort; =&pN8PEn\  
import org.rut.util.algorithm.support.QuickSort; o0G`Xn  
import org.rut.util.algorithm.support.SelectionSort; c@-K  
import org.rut.util.algorithm.support.ShellSort; &H&P)Px*_  
LU,"i^T  
/** aT!9W'uY  
* @author treeroot 9r nk\`E  
* @since 2006-2-2 5TneuGD  
* @version 1.0 5 ek %d  
*/ J md ?  
public class SortUtil { ,/6:bc:W  
public final static int INSERT = 1; En9]x"_  
public final static int BUBBLE = 2; h+3Z.WKhwP  
public final static int SELECTION = 3; Gd-.E7CH!  
public final static int SHELL = 4; {[5L96RH%  
public final static int QUICK = 5; KVM@//:{  
public final static int IMPROVED_QUICK = 6; (+LR u1z  
public final static int MERGE = 7; BZ+ mO  
public final static int IMPROVED_MERGE = 8; Q|B|#?E==  
public final static int HEAP = 9; n [Xzo}  
A>t!/_"  
public static void sort(int[] data) { ~}IvY?! ;  
sort(data, IMPROVED_QUICK); L-C/Luws  
} %DRy&k/T  
private static String[] name={ !""!sFx)R  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *:T>~ilF  
}; 4@]xn  
I0HY#z%  
private static Sort[] impl=new Sort[]{ id tQXwa  
new InsertSort(), BgWz<k}5M  
new BubbleSort(), reM  
new SelectionSort(), v^],loi<V  
new ShellSort(), +Bq}>  
new QuickSort(), i9\\evJs  
new ImprovedQuickSort(), tM$0 >E  
new MergeSort(), 9U<)_E<y  
new ImprovedMergeSort(), TFC!u 0Y"$  
new HeapSort() CoUd16*"JM  
}; ]v@tZ}  
H@2v<e@  
public static String toString(int algorithm){ y/}VtD  
return name[algorithm-1]; /s8%02S  
} {{]=zt|69  
^wO_b'@v  
public static void sort(int[] data, int algorithm) { )qyx|D  
impl[algorithm-1].sort(data); a0?iR5\  
} }&(E#*>x  
)pS_+ZF  
public static interface Sort { => uVp  
public void sort(int[] data); 8XYD L] I'  
} Y-%l7GErhL  
5S\][;u  
public static void swap(int[] data, int i, int j) { T`g?)/  
int temp = data; Z9"{f)T  
data = data[j]; vz yNc'  
data[j] = temp; 5xMA~I0c  
} 8sR  
} TRk ?8  
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