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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。 }5EvBEv-)  
插入排序: {>9vm!<[*\  
o^mW`g8[  
package org.rut.util.algorithm.support;  Hi#hf"V  
arm26YA-,  
import org.rut.util.algorithm.SortUtil; D/v?nW  
/** umI@ej+D  
* @author treeroot "d% o%  
* @since 2006-2-2 09/Mg  
* @version 1.0 idEhxvAo  
*/ 9J*.'Y  
public class InsertSort implements SortUtil.Sort{ ^8OK.iC  
tw,uV)xm  
/* (non-Javadoc) nH_M#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Wgi[VB  
*/ 7*.nd  
public void sort(int[] data) { P`^nNX]x+,  
int temp; A{MMY{K3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dSkMA  
} ~m3Q^ue  
} Zcjh  
} s+DOr$\  
ew?4;  
} :<hM@>eFn  
fS?}(7  
冒泡排序: zc K`hS  
id+ ~ V  
package org.rut.util.algorithm.support;  4 Fl>XM  
fN&@y$  
import org.rut.util.algorithm.SortUtil; E6XDn`:  
gamE^Ee  
/** nvbzCtC  
* @author treeroot u.;l=tzz  
* @since 2006-2-2 @ Z.BYC  
* @version 1.0 q#=HBSyM  
*/ 2ci[L:U  
public class BubbleSort implements SortUtil.Sort{ Np7+g`nG  
]n}aePl}oU  
/* (non-Javadoc) V_zU?}lZ^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GHY+q{'#V_  
*/ ncrg`<'/,  
public void sort(int[] data) { Hsn'"  
int temp; (@m/j2z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ U$|q]N  
if(data[j] SortUtil.swap(data,j,j-1); 0CO@@`~4  
} xpX<iT>5u  
} Qo32oT[DM  
} 'Fy"|M;2  
} S4\a"WYg  
I3HO><o f  
} ,?P<=M  
{7jl) x3l  
选择排序: Qk? WX (`B  
k4a51[SYBK  
package org.rut.util.algorithm.support; 4sRM" w;  
)(0if0D4  
import org.rut.util.algorithm.SortUtil; `Fie'[F5,)  
`JO>g=,4  
/** DQ(0:r  
* @author treeroot ~m_{&,CA.  
* @since 2006-2-2 `;Ho<26  
* @version 1.0 "iTjiH)Q(  
*/ <8(=Lv`)q  
public class SelectionSort implements SortUtil.Sort { 4GbfA .u  
LaO8)lqR  
/* a*-9n-U@[k  
* (non-Javadoc) (<YBvpt4>  
* EsGf+-}|!0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6R,Y.srR  
*/ ( +Sv3h  
public void sort(int[] data) { tL3R<'  
int temp; E*O($tS  
for (int i = 0; i < data.length; i++) { `6)(Fk--"  
int lowIndex = i; )X-'Q-  
for (int j = data.length - 1; j > i; j--) { 8t Q;N'  
if (data[j] < data[lowIndex]) { XwUa|"X6  
lowIndex = j; -'Ay(h   
} rRg,{:;A  
} D'<L6w`  
SortUtil.swap(data,i,lowIndex); R\|,GZ!`+  
} 1~t.2eUG  
} ]XU4nNi  
8T1zL.u>q  
} VcGl8~#9  
>ei~:z]R  
Shell排序: >MJ#|vO  
E447'aJ  
package org.rut.util.algorithm.support; Pr1q X5>=  
_aR{B-E  
import org.rut.util.algorithm.SortUtil; ulxfxfd  
WW+xU0  
/** -=nk,cYn  
* @author treeroot Ie(i1?`A8  
* @since 2006-2-2 &nDXn|  
* @version 1.0 a M9v  
*/ u8T@W}FX  
public class ShellSort implements SortUtil.Sort{ o!:Z?.!  
1l$2T y+ =  
/* (non-Javadoc) (IBT|K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XjF@kQeM=  
*/ dpTsTU!\  
public void sort(int[] data) { arDl2T,igF  
for(int i=data.length/2;i>2;i/=2){ g!R7CRt%  
for(int j=0;j insertSort(data,j,i); H,]8[ qT<  
} 8'u9R~})   
} h*%FZ}}`q  
insertSort(data,0,1);  D3cJIVM  
} o>_})WM1[  
ZA+dtEE=f9  
/** uG^CyM>R`  
* @param data ^#d\HI  
* @param j AY{KxCr b^  
* @param i 'g!T${  
*/ #h?I oB7  
private void insertSort(int[] data, int start, int inc) { q)i %*IY  
int temp; ?D6uviQg  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6LBdTnzUd  
} S s+F  
} wkM1tKhy/  
} /QY F|%7!  
.26mB Xr  
} K f/[Edn  
~.aR=m\#  
快速排序: 4T31<wk  
gom!dB0J  
package org.rut.util.algorithm.support; X>8,C^~$1  
g3z/yj  
import org.rut.util.algorithm.SortUtil; F%h3?"s  
8@;]@c)m  
/** zMR)w77  
* @author treeroot q2*A'C  
* @since 2006-2-2 -NXxxK  
* @version 1.0 xIGq+yd(  
*/ eAfi!!Z<  
public class QuickSort implements SortUtil.Sort{ |tGUx*NN  
6N#hN)/  
/* (non-Javadoc) U?#wWbE1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P9/ (f$=  
*/ xj3 qOx$  
public void sort(int[] data) { WeM38&dWY  
quickSort(data,0,data.length-1); kJJT`Ba&/  
} au{) 5W4~  
private void quickSort(int[] data,int i,int j){ 5dm~yQN/  
int pivotIndex=(i+j)/2; SXk.7bMV6  
file://swap k ucbI_  
SortUtil.swap(data,pivotIndex,j); Kcm+%p^  
6nZ]y&$G-k  
int k=partition(data,i-1,j,data[j]); Ipk;Nq  
SortUtil.swap(data,k,j); S MWXP  
if((k-i)>1) quickSort(data,i,k-1); KLyRb0V  
if((j-k)>1) quickSort(data,k+1,j); 5MVa;m  
CIx(SeEF  
} {Rkd;`Q`!  
/** c_3B:F7  
* @param data S@/{34,  
* @param i WO_Uc_R  
* @param j /W/e%.  
* @return jVQy{8{G  
*/ IMkE~0x4</  
private int partition(int[] data, int l, int r,int pivot) { }|.<EkA  
do{ |-Uh3WUE6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J#I RbO)  
SortUtil.swap(data,l,r); +/ZIs|B4,z  
} M7TLQqaF  
while(l SortUtil.swap(data,l,r); 2!{D~Gfl=  
return l; fB8, )&  
} #7]Jz.S  
,U~A=bsa  
} g'7E6n"!,  
+>"s)R43  
改进后的快速排序: 1,-C*T}nR  
ye(b 7CX  
package org.rut.util.algorithm.support; l~i?  
0$*7lQ<a#M  
import org.rut.util.algorithm.SortUtil; 8K,X3a9  
h p]J> i.  
/** 7?*+,Fo#  
* @author treeroot i g(O$y  
* @since 2006-2-2 k =5k)}i  
* @version 1.0 YzESV Th  
*/ Fi/iA%,  
public class ImprovedQuickSort implements SortUtil.Sort { )9hqd  
NoiB9 8g  
private static int MAX_STACK_SIZE=4096; EhxpMTS  
private static int THRESHOLD=10; }u_D{bz  
/* (non-Javadoc) `HX:U3/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) duaF?\vv  
*/ rfqwxr45h  
public void sort(int[] data) { Pk;\^DRC  
int[] stack=new int[MAX_STACK_SIZE]; `D4Wg<,9  
-c_l nK  
int top=-1; x3q^}sj%  
int pivot; danPy2  
int pivotIndex,l,r; K!6T8^JH  
hY`<J]-'`  
stack[++top]=0; ]3LLlXtK[  
stack[++top]=data.length-1; ZSuoD$~k[  
TxJk.c  
while(top>0){ OG5{oH#K  
int j=stack[top--]; t#^Cem<  
int i=stack[top--]; 1SExl U  
7kLu rv  
pivotIndex=(i+j)/2; )ros-d p`  
pivot=data[pivotIndex]; LCivZ0?|X  
v \:AOY'  
SortUtil.swap(data,pivotIndex,j); \n{# r`T  
&<t%u[3  
file://partition }j/\OY _&  
l=i-1; Rw?w7?I  
r=j; "*bLFORkq'  
do{ K(+=V)'Dz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); UD-+BUV  
SortUtil.swap(data,l,r); |{#St-!-7  
} Ok!P~2J  
while(l SortUtil.swap(data,l,r); L]=]/>jQ6  
SortUtil.swap(data,l,j); tx09B)0  
ji/`OS-iq  
if((l-i)>THRESHOLD){ }F>RI jj  
stack[++top]=i; v3DK0MW  
stack[++top]=l-1; k=s^-Eiu  
}  ``/L18  
if((j-l)>THRESHOLD){ % !@E)%d0  
stack[++top]=l+1; jj{:=l ZB  
stack[++top]=j; p/{%%30ke  
} In?rQiD9  
^T&{ORWz  
} *y4DK6OFe  
file://new InsertSort().sort(data); Q`k;E}x_-  
insertSort(data); &{Z+p(3Gj  
} DGHSyB^+1  
/** c}@E@Y`@w  
* @param data I'5[8  
*/ sX"L\v  
private void insertSort(int[] data) { ntIR#fB  
int temp; /dCsZA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~cm4e>o  
} $n<1D -0!r  
} -b!?9T?}  
} RvR.t"8  
#N][-i  
} #6M |T+ =  
^&;,n.X5Z  
归并排序: K@p9_K8  
^]o H}lwO  
package org.rut.util.algorithm.support; n/v.U,f&l@  
cxR.:LD}  
import org.rut.util.algorithm.SortUtil; XJo.^<m  
KpGx<+0p  
/** ;-3&yQ7N)  
* @author treeroot X5o*8Bg4M  
* @since 2006-2-2 q7CLxv &QG  
* @version 1.0 pLu5x<  
*/ aVR!~hvFs  
public class MergeSort implements SortUtil.Sort{ ;MQl.?vj  
N:B<5l '  
/* (non-Javadoc) t^&hG7L_m,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l;q]z  
*/ ]G i&:k  
public void sort(int[] data) { &J/EBmY[  
int[] temp=new int[data.length]; dQ*^WNUB  
mergeSort(data,temp,0,data.length-1); N8nt2r<h  
} UlWmf{1%]?  
>,,`7%Rv  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ar)EbGId  
int mid=(l+r)/2; d./R;Z- I{  
if(l==r) return ; @;O"-7Kk  
mergeSort(data,temp,l,mid); ?GX@&_  
mergeSort(data,temp,mid+1,r); :i{M1z I  
for(int i=l;i<=r;i++){ |OLXb+ 7X  
temp=data; r`- 8+"P  
} fgqCX:SWz  
int i1=l; }k.yLcXM  
int i2=mid+1; 6"_pCkn;c<  
for(int cur=l;cur<=r;cur++){ 1L`V{\_0s  
if(i1==mid+1) ,hf W2}  
data[cur]=temp[i2++]; ViW2q"4=  
else if(i2>r) ]U#of O  
data[cur]=temp[i1++]; )"?'~5A  
else if(temp[i1] data[cur]=temp[i1++]; w<~[ad}  
else f I%8@ :  
data[cur]=temp[i2++]; GJWGT`"  
} 0=&S?J#!  
} H`M|B<.  
 dw;<Q  
} |[~ S&  
{_!,T%>+1  
改进后的归并排序: p"P+8"`  
^U?Ac=  
package org.rut.util.algorithm.support; F;_c x  
yf*'=q  
import org.rut.util.algorithm.SortUtil; ^W sgAyCB  
</'n={+q  
/** 0xZ^ f}@L  
* @author treeroot ^P{y^@XI  
* @since 2006-2-2 I:t ?#)wl  
* @version 1.0 ^/2HH  
*/ gdCit-3  
public class ImprovedMergeSort implements SortUtil.Sort { H*G(`Zl}  
?<F([(  
private static final int THRESHOLD = 10; &IXmy-w  
7#wB  
/* yT:2*sZRc  
* (non-Javadoc) WZ`i\s1#  
* gaC4u,Zb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R1 SFMI   
*/ n;Mk\*Cg  
public void sort(int[] data) { E!ZLVR.K  
int[] temp=new int[data.length]; X> 98`  
mergeSort(data,temp,0,data.length-1); oAifM1*0  
} onmpMU7w  
Jqzw94  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2ih}?%H8  
int i, j, k; Syseiw  
int mid = (l + r) / 2; _8r'R  
if (l == r) q{V e%8$"  
return; /t`|3Mw  
if ((mid - l) >= THRESHOLD) e<uf)K=(C  
mergeSort(data, temp, l, mid); NL:dyV }  
else &*o4~6pQ#  
insertSort(data, l, mid - l + 1); ,FP0n  
if ((r - mid) > THRESHOLD) i+5Qs-dHA  
mergeSort(data, temp, mid + 1, r); 6Br^Ugy  
else u ]y[g  
insertSort(data, mid + 1, r - mid); ^O<' Qp,[:  
ogSDV   
for (i = l; i <= mid; i++) { =p5]r:9W  
temp = data; { k=3OIp  
} KaMg [ G  
for (j = 1; j <= r - mid; j++) { )-"<19eu  
temp[r - j + 1] = data[j + mid]; ]35`N<Ac  
} MA_YMxP.'  
int a = temp[l]; ]@21KO  
int b = temp[r]; q.R(>ZcV  
for (i = l, j = r, k = l; k <= r; k++) { uO]|YF  
if (a < b) { 59$PWfi-\  
data[k] = temp[i++]; ELV~ ayp5  
a = temp; I++ Le%w  
} else { .Y2Hd$rs  
data[k] = temp[j--]; NRG06M  
b = temp[j]; q_ ^yma  
} P7T'.|d  
} f99"~)B|  
} ez9F!1  
Py #EjF12  
/** #-Mr3  
* @param data Wm"q8-<<  
* @param l qi~-<qW  
* @param i [(g2u@  
*/ 2.</n}g  
private void insertSort(int[] data, int start, int len) { zOA~<fhT  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Uc_ }="  
} g$2#TWW5  
} [;aM8N  
} /2d>nj  
} 1P"{TMd?  
(e5Z^9X  
堆排序: ^w%%$9=:r  
b3_P??yp  
package org.rut.util.algorithm.support; 3n)Kzexh  
8mmnnf{P  
import org.rut.util.algorithm.SortUtil; 4".I*ij  
r [^.\&-  
/** ._>03,"  
* @author treeroot .7 )oWd!  
* @since 2006-2-2 SIm1fC  
* @version 1.0 qZ E3T:S  
*/ A@_>9;   
public class HeapSort implements SortUtil.Sort{ ~9APc{"A  
jP/Vqe%%8  
/* (non-Javadoc) ;=IJHk1&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rSt5 @f?  
*/ 'hWA&Xx +  
public void sort(int[] data) { ` ;mQ"lO  
MaxHeap h=new MaxHeap(); # hn  
h.init(data); R+ \%  
for(int i=0;i h.remove(); d0}(d Gl  
System.arraycopy(h.queue,1,data,0,data.length); K"t?  
} NAtDt=  
BI%~0 Gj8  
private static class MaxHeap{ -1B.A  
6ERMn"[_w  
void init(int[] data){ #wT6IU1  
this.queue=new int[data.length+1]; x&J\swN9  
for(int i=0;i queue[++size]=data; KwMt@1Z  
fixUp(size); Fhllqh)  
} y@$E5sz  
} l=" X|t   
dHiir&Rd9`  
private int size=0; 4x-,l1NMR  
K%L6UQ;  
private int[] queue; ^S;{;c+'  
S'$m3,l(k  
public int get() { *7Y#G8 s  
return queue[1]; "8uNa  
} p*g)-/mA  
un!v1g9O  
public void remove() { l i?@BHEf  
SortUtil.swap(queue,1,size--); + \%]<YO  
fixDown(1); ox<&T|  
} 2G-"HOG  
file://fixdown `WCL-OoZc5  
private void fixDown(int k) { l=T;hk  
int j; |.RyF@N`T  
while ((j = k << 1) <= size) { "3]}V=L<5  
if (j < size %26amp;%26amp; queue[j] j++; \ ;]{`  
if (queue[k]>queue[j]) file://不用交换 #r"|%nOfY  
break; h4K Mhr  
SortUtil.swap(queue,j,k); 2DsP "q79k  
k = j; ?5ZvvAi  
} &0[ L2x}7  
} Opf)TAl{  
private void fixUp(int k) { ~a3u['B  
while (k > 1) { ~vpF|4Zn5  
int j = k >> 1; ~.G$0IJY  
if (queue[j]>queue[k]) ^{IZpT3  
break; ;u(*&vRqr^  
SortUtil.swap(queue,j,k); T ?[;ej:  
k = j; vOCaru?~h  
} mX.mX70|J  
} Xl2g Hh  
3'6 UvAXFH  
} w[l#0ZZ  
rxMo7px@}I  
} =$bF[3D  
-le^ 5M7  
SortUtil: 2/t;}pw8  
j>\rs|^O  
package org.rut.util.algorithm; Z@x&  
cs\=8_5  
import org.rut.util.algorithm.support.BubbleSort; t 3N}):  
import org.rut.util.algorithm.support.HeapSort; t@#5 G* _Q  
import org.rut.util.algorithm.support.ImprovedMergeSort; (i(E~^O  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2+)h!y]  
import org.rut.util.algorithm.support.InsertSort; mh[,E8'd  
import org.rut.util.algorithm.support.MergeSort; `{K-eHlrM9  
import org.rut.util.algorithm.support.QuickSort; b@4UR<  
import org.rut.util.algorithm.support.SelectionSort; !D{z. KO  
import org.rut.util.algorithm.support.ShellSort; }m?Ut|  
=ZU!i0 K  
/** W\Scak>  
* @author treeroot `Nvhp]E  
* @since 2006-2-2 BcpbS%S  
* @version 1.0 GwDOxH'  
*/ NWiDNK[VE}  
public class SortUtil { 5QXU"kWH  
public final static int INSERT = 1; zb[kRo&a0W  
public final static int BUBBLE = 2; g%]<sRl:-  
public final static int SELECTION = 3; sl$y&C-  
public final static int SHELL = 4; (>u1O V  
public final static int QUICK = 5; ND?"1/s  
public final static int IMPROVED_QUICK = 6; E]&N'+T  
public final static int MERGE = 7; %nq<nfDT  
public final static int IMPROVED_MERGE = 8; 2P'Vp7f6 Y  
public final static int HEAP = 9; :+QNN<  
S/pU|zV[  
public static void sort(int[] data) { TBJ?8W(  
sort(data, IMPROVED_QUICK); euT=]j  
} ?(B}w*G~  
private static String[] name={ "38<14V  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6ZI7V!k  
}; O"TVxP:  
S=V  
private static Sort[] impl=new Sort[]{ Ufi#y<dP  
new InsertSort(), @,Dnl v|?  
new BubbleSort(), v+sF0 j\P  
new SelectionSort(), n{<@-6  
new ShellSort(), AIQ {^:  
new QuickSort(), {U3jJ#K  
new ImprovedQuickSort(), \pK&gdw  
new MergeSort(), ?Q=(?yR0]  
new ImprovedMergeSort(), am.d^'  
new HeapSort() ;}S_PnwC@  
}; k 75 p  
6 mLC{X[  
public static String toString(int algorithm){ =&"pG` x  
return name[algorithm-1]; qgEzK  
} r^"sZk#  
fM]nP4K`  
public static void sort(int[] data, int algorithm) { G='`*_$  
impl[algorithm-1].sort(data); .^F&6'h1H  
} U{l f$  
`aX+Gz?  
public static interface Sort { DtGkhq;  
public void sort(int[] data); W2$rC5|  
} 7g{JE^u  
pcscNUp  
public static void swap(int[] data, int i, int j) { r/NaoIrJV  
int temp = data; *1b0IQ$g  
data = data[j]; ;XZN0A2  
data[j] = temp; B$JPE7h@[P  
} 9dszn^]T  
} mqJD+ K  
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