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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。 LEZ&W ;bCo  
插入排序: VevNG *  
Fi4UaJ3K  
package org.rut.util.algorithm.support; rFey4zzz  
A?8\Y{FQ  
import org.rut.util.algorithm.SortUtil; FbAW_Am(  
/** <C'Z H'p  
* @author treeroot OUI6 ax\[  
* @since 2006-2-2 g\Ak;03n  
* @version 1.0 _\\ -md:  
*/ dFW.}"^c  
public class InsertSort implements SortUtil.Sort{ )T1iN(Z  
}^Gd4[(,g  
/* (non-Javadoc) hJ f2o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y(5:}x&E  
*/ ?'eq",c#4N  
public void sort(int[] data) { xr[Vp  
int temp; 8.QSqW7t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L&kr{7q  
} X`:'i?(yj  
} O-#TZ   
} ^2S# Uk  
RNWX.g)b  
} ?qmp_2:WU  
jn JZ# =)  
冒泡排序: ]a?bzOr,  
$shp(T,q  
package org.rut.util.algorithm.support; t> xd]ti  
zXZir7NfM  
import org.rut.util.algorithm.SortUtil; U%>'"  
8]bz(P#  
/** +&5' uAe  
* @author treeroot }Cj8  
* @since 2006-2-2 .Q* 'r& n  
* @version 1.0 .WX,Nd3@  
*/ wvN`R  
public class BubbleSort implements SortUtil.Sort{ <{Q'&T  
T2=HG Z  
/* (non-Javadoc) s_[VHPN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lr~0pL  
*/ 0 )}$^TV  
public void sort(int[] data) { X(*!2uS  
int temp; pK}=*y~$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <+v{GF#R  
if(data[j] SortUtil.swap(data,j,j-1); O=}g 4c  
} XRtD< jlA"  
} nlGHT  
} G$bJ+  
} W\cjdd  
,SUT~oETP  
} taWqSq!  
|(%zb\#9  
选择排序: QkQ!Ep(  
:Ht; 0|[H  
package org.rut.util.algorithm.support; )nfEQ)L;h}  
$IX\O  
import org.rut.util.algorithm.SortUtil; O )d[8jw"  
* F4UAQzYb  
/** :TalW~r|  
* @author treeroot UvJ; A  
* @since 2006-2-2 MYdO jcN  
* @version 1.0 56}X/u  
*/ .0p^W9  
public class SelectionSort implements SortUtil.Sort { ZZxk]D<  
lDU_YEQ>  
/* "ju'UOcS/  
* (non-Javadoc) L]%l51U  
* `3c CH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uLR<FpM  
*/ 5's~>up&  
public void sort(int[] data) { G`0V)S  
int temp; 'b&yrBFD  
for (int i = 0; i < data.length; i++) { zM#sOg  
int lowIndex = i; 8LzBh_J?  
for (int j = data.length - 1; j > i; j--) { vB\]u.  
if (data[j] < data[lowIndex]) { -NJ!g/ >mM  
lowIndex = j; 7[pBUDA  
} YHXLv#8  
} g}LAks  
SortUtil.swap(data,i,lowIndex); 0#_'o ,  
} QzvHm1,@  
}  #xh_  
YJV%a  
} .a'f|c6  
4rg2y]  
Shell排序: soRv1)el  
zp}eLm:=d  
package org.rut.util.algorithm.support; }H> ^o9  
>l']H*&B<  
import org.rut.util.algorithm.SortUtil; p4!:]0c  
#W>QY Tp  
/** <AH1i@4  
* @author treeroot /]^#b  
* @since 2006-2-2 8^/I>0EZ  
* @version 1.0 sgUud_r)4  
*/ WJH\~<{mP  
public class ShellSort implements SortUtil.Sort{ )!:sFa 1  
c2nKPEX&5  
/* (non-Javadoc) ]`g@UtD9`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W-Hoyn>?2  
*/ co8"sz0(U  
public void sort(int[] data) { ').}Nz  
for(int i=data.length/2;i>2;i/=2){ ypOLp SYk  
for(int j=0;j insertSort(data,j,i); ^TY ;Zp  
} "Jq8?FoT  
} nI.x  
insertSort(data,0,1); CNZz]H  
} Q4*?1`IsR  
1\*\?\T>_  
/** /D&%v *~E  
* @param data l e4?jQQ@L  
* @param j Fb`a~c~s  
* @param i '7^M{y/dU  
*/ RD7^&  
private void insertSort(int[] data, int start, int inc) { CAq/K?:8  
int temp; S-Y=-"  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~}EMk3  
} \wcam`f  
} .IBp\7W!?E  
} W!Hm~9fz  
"5R~(+~<@  
} \MC-4Yz  
i<kD  
快速排序: _|[UI.a  
^hNgm.I  
package org.rut.util.algorithm.support; ajR%c2G;  
2WX7nK;I  
import org.rut.util.algorithm.SortUtil; J]l rS  
nRL. ppUI  
/** 6tHO!`}1  
* @author treeroot M5nWVK7c  
* @since 2006-2-2 B~]5$-  
* @version 1.0 R'EUV0KX>Y  
*/ 7w,FX.=;cv  
public class QuickSort implements SortUtil.Sort{ VVH.2&`I  
IN8>ZV`j)  
/* (non-Javadoc) A1'hlAGF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u0aJu  
*/ lO&3{dOYE  
public void sort(int[] data) { {;toI  
quickSort(data,0,data.length-1); 4#x5MM  
} 61puqiGG^  
private void quickSort(int[] data,int i,int j){ ::Ke ^dp  
int pivotIndex=(i+j)/2; @SZM82qU2z  
file://swap {^(ACS9mL  
SortUtil.swap(data,pivotIndex,j); ?0? R  
.+7;)K   
int k=partition(data,i-1,j,data[j]); 7S/G B  
SortUtil.swap(data,k,j); NH$r Z7$  
if((k-i)>1) quickSort(data,i,k-1); \^ghdU  
if((j-k)>1) quickSort(data,k+1,j); Dd;Nz  
kB?al#`  
} &%})wZ+Dj  
/** Ee4&g<X.  
* @param data ?]D"k4  
* @param i zi`b2h  
* @param j rSXh;\MfB4  
* @return m_?d=o  
*/ 06$!R/K  
private int partition(int[] data, int l, int r,int pivot) { ST\$=  
do{ u[nyW3MZ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }cT_qqw(f%  
SortUtil.swap(data,l,r); ,0x y\u  
} .>Ljnk  
while(l SortUtil.swap(data,l,r); DXz} YIEC  
return l; >:D j\"o  
} ]|`C uc  
!Mi;*ZR  
} 64hk2a8  
o-}R?>  
改进后的快速排序: :ba5iMa  
O@p]KSfk  
package org.rut.util.algorithm.support; 311LC cRp  
:Ad &$e g+  
import org.rut.util.algorithm.SortUtil; w"R:\@ F  
D8 hr?:I9  
/** 626Z5Afg  
* @author treeroot ^Z~;4il_F  
* @since 2006-2-2 A.hd Kl  
* @version 1.0 1V8-^  
*/ v) vkn/:  
public class ImprovedQuickSort implements SortUtil.Sort { h/~n\0,J/  
pdE3r$C  
private static int MAX_STACK_SIZE=4096; ?LvCR_D:  
private static int THRESHOLD=10; zZVfj:i8  
/* (non-Javadoc) xg)v0y~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E<yW\  
*/ )M)7"PC  
public void sort(int[] data) { cA%%IL$R  
int[] stack=new int[MAX_STACK_SIZE]; ]`Oo%$Ue  
rn<PR*  
int top=-1; #1>X58I^  
int pivot; r*Yi1j/  
int pivotIndex,l,r; }Ho Qwy|&  
^^5&QSB:'  
stack[++top]=0; 8 Y5  
stack[++top]=data.length-1; ]('D^Ro  
Mbjvh2z  
while(top>0){ ) $PDo 7#  
int j=stack[top--]; HttiX/2~  
int i=stack[top--]; `w]s;G[  
'` pDngX  
pivotIndex=(i+j)/2; G "73=8d  
pivot=data[pivotIndex]; ~%YBI9$+  
*zr(Zv  
SortUtil.swap(data,pivotIndex,j); 6`f2-f9%iq  
">#wOm+ +  
file://partition ,yd?gP-O  
l=i-1; E9~Ghx.   
r=j; lT(oL|{#P  
do{ ;3' .C~   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); kT;S4B  
SortUtil.swap(data,l,r); -wjN"g<  
} F&&$Qn_+  
while(l SortUtil.swap(data,l,r); M)U{7c$c7  
SortUtil.swap(data,l,j); dPhQ :sd>  
]\!?qsT3}  
if((l-i)>THRESHOLD){ OoWyPdC+P  
stack[++top]=i; .k,kTr$ S  
stack[++top]=l-1; O} f80K  
} ?Wz8[u  
if((j-l)>THRESHOLD){ eopD5  
stack[++top]=l+1; L'F<ev  
stack[++top]=j; V{JAB]?^  
} 6L)%T02C  
-;'1^  
} R) c'#St  
file://new InsertSort().sort(data); 3D2E?$dX  
insertSort(data); U~pV)J  
} P>Ez'C  
/** )kP5u`v  
* @param data '_V2!?+RU+  
*/ >uSy  
private void insertSort(int[] data) { B[KJR?>  
int temp; aoXb22]{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B'fb^n<  
} l,kUhZ@W  
} 5O\*h;U 6  
} 3g >B"t  
;aw=MV  
} _'(,  
\_lod kf  
归并排序: ariLG [:X  
.FLy;_f+  
package org.rut.util.algorithm.support; yxH ( c  
rYbpih=x  
import org.rut.util.algorithm.SortUtil; ({q?d[q[  
o#skR4lwe  
/** Rb.SY{}C  
* @author treeroot uXKERzg  
* @since 2006-2-2 Ry'= ke  
* @version 1.0 _ A=$oVe  
*/ 1&- </G#  
public class MergeSort implements SortUtil.Sort{ )'~6HO8Z  
={z*akn,  
/* (non-Javadoc) $g sxO!G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {HCz p,Y  
*/ a]MX)?  
public void sort(int[] data) { ?#45wC  
int[] temp=new int[data.length]; 7Zh~lM  
mergeSort(data,temp,0,data.length-1); $f zaPD4.  
} f\jLqZY  
G%s 2P.cd  
private void mergeSort(int[] data,int[] temp,int l,int r){ xftBSdVE  
int mid=(l+r)/2; mVy|{Oh  
if(l==r) return ; ]bK=FIK2  
mergeSort(data,temp,l,mid); QnJZr:4b  
mergeSort(data,temp,mid+1,r); 2K3{hxB  
for(int i=l;i<=r;i++){ s{$(*_  
temp=data; D ^x-^6^  
}  w/kt3Lw  
int i1=l; ](s'L8 (x  
int i2=mid+1; 6*3.SGUY  
for(int cur=l;cur<=r;cur++){ RS^lKJ1 U  
if(i1==mid+1) q,+yqrt  
data[cur]=temp[i2++]; eN^qG 42  
else if(i2>r) 43@{JK9G  
data[cur]=temp[i1++]; ;S>])5<  
else if(temp[i1] data[cur]=temp[i1++]; (Kv#m 3~  
else [xGf,;Z  
data[cur]=temp[i2++]; 7eiV{tYF  
} %;rHrDP(>  
} Wh.?j>vB  
|b)Y#)C;  
} tfGHea)M  
!s&NT @ S  
改进后的归并排序: <UQe.K"  
!Y[lQXv  
package org.rut.util.algorithm.support; XR;eY:89  
&MCbYph,  
import org.rut.util.algorithm.SortUtil; 1 =M ?GDc  
7BJzM lJ1Y  
/** BYMi6wts  
* @author treeroot o<|P9#(U"  
* @since 2006-2-2 }3OKC2K~  
* @version 1.0 MZT23 [+  
*/ 6Q${U7%7  
public class ImprovedMergeSort implements SortUtil.Sort { y$_eCmq  
`nZ)>  
private static final int THRESHOLD = 10; egq67S  
1fZ(l"  
/* u)~C;f)  
* (non-Javadoc)  7*?}:  
* E<Q f!2s$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RH&~+5  
*/ i*@< y/&'  
public void sort(int[] data) { iT%} $Lu~  
int[] temp=new int[data.length]; G{6;>8h  
mergeSort(data,temp,0,data.length-1); K5xX)oV  
} ~1>.A(,=z  
LyAn&h}  
private void mergeSort(int[] data, int[] temp, int l, int r) { ce7CcHQ?B  
int i, j, k; Yo|,]X>/  
int mid = (l + r) / 2; w.\&9]P3~  
if (l == r) ~,i-8jl,  
return; `pGa~!vl  
if ((mid - l) >= THRESHOLD) 23DiW#o'  
mergeSort(data, temp, l, mid); OUhqM VX9C  
else Kq;8=xP[  
insertSort(data, l, mid - l + 1); _Nqt21sL  
if ((r - mid) > THRESHOLD) /K. !sQ$  
mergeSort(data, temp, mid + 1, r); "-+\R}q$  
else 4#:W.]U8  
insertSort(data, mid + 1, r - mid); ;{U@qQD7  
 O4og?h>  
for (i = l; i <= mid; i++) { y9>ZwYN  
temp = data; ~2gG(1%At9  
} %3ICI  
for (j = 1; j <= r - mid; j++) { 1f":HnLRM  
temp[r - j + 1] = data[j + mid]; ]hFW 73FV  
} }#&#^ B#?O  
int a = temp[l]; TztAZ2C  
int b = temp[r]; ''0fF_P  
for (i = l, j = r, k = l; k <= r; k++) { W7 #9jo  
if (a < b) { p_${Nj  
data[k] = temp[i++]; ~wkj&yVT  
a = temp; ]zWon~  
} else { 4X+ifZO  
data[k] = temp[j--]; j,"@?Wt7  
b = temp[j]; !'cl"\h  
} 5'X ]k@m_  
} @T'i/}nl  
} kNobl  
(q(~de  
/** *%S"eWb  
* @param data -)RH5WGS  
* @param l jAm3HI   
* @param i MM x9(`t*.  
*/ PqiB\~o@Z  
private void insertSort(int[] data, int start, int len) { T^Ze3L]  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9Ru8~R/\  
} B4i!/@0s  
} g.zEn/SM  
} 3%%o?8ES  
} fR*q?,  
&i$ldR  
堆排序: Stu4t==U  
\uza=e  
package org.rut.util.algorithm.support; ,v';>.]  
$**r(HV  
import org.rut.util.algorithm.SortUtil; Ljx(\Cm  
d ysC4DS  
/** 'U\<IL#U  
* @author treeroot &QGdLXOn  
* @since 2006-2-2 HLV2~5Txc  
* @version 1.0 !3*(N8_|#  
*/ [&#/]Ul'  
public class HeapSort implements SortUtil.Sort{ 3< 2}V  
aD=A^ktx  
/* (non-Javadoc) SU/BQ3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >VN5`Zlw\C  
*/ '>' wK.  
public void sort(int[] data) { 5sx1Zq7  
MaxHeap h=new MaxHeap(); vM*($qpAy  
h.init(data); q@nP}Pv&5  
for(int i=0;i h.remove(); 5yzv|mrx  
System.arraycopy(h.queue,1,data,0,data.length); gT#&"aP5S  
} \ytJ=0r  
c0;t4( &8  
private static class MaxHeap{ 'VlDh`<W  
4:dH]  
void init(int[] data){ :$m}UA-9  
this.queue=new int[data.length+1]; (}EB2V9Hh  
for(int i=0;i queue[++size]=data; L.jh   
fixUp(size); X bD4:i%  
} ^`)) C;  
} PGLplXb#[S  
+KvU$9Ad>  
private int size=0; RHO(?8"_  
2E)wpgUc?e  
private int[] queue; dVi!Q@y+  
n1VaLD  
public int get() { CB/D4j;  
return queue[1]; 9Bw|(J  
} 5 ({t4dm  
&' Ne! o8  
public void remove() { 9&_<f}ou  
SortUtil.swap(queue,1,size--); (<}&DE  
fixDown(1); /q5v"iX]T  
} 37|&?||  
file://fixdown ak |WW]R  
private void fixDown(int k) { z2QP)150  
int j; g'V>_u#(  
while ((j = k << 1) <= size) { -1U D0(  
if (j < size %26amp;%26amp; queue[j] j++; D-4f >  
if (queue[k]>queue[j]) file://不用交换 7zSLAHW  
break; or';A'k  
SortUtil.swap(queue,j,k); Z^IPZF  
k = j; #>mr[   
} Qg[/%$x.  
} bS"fkf9  
private void fixUp(int k) { obNqsyc77R  
while (k > 1) { p|&Yku=  
int j = k >> 1; /5:bvg+  
if (queue[j]>queue[k]) 7[5.> h  
break; }7 c[Q($K  
SortUtil.swap(queue,j,k);  \V*xWS  
k = j;  .5y+fL  
} 1r]Io gI  
} ;bL EL"x%  
WzF !6n!h  
} h9Y%{v  
$l|qk  z  
} HLZ;8/|48m  
U~j ^I^  
SortUtil: ZsOIH<}S  
MgNU``  
package org.rut.util.algorithm; HFaj-~b  
/x[jQM\  
import org.rut.util.algorithm.support.BubbleSort; 7|[mz> "d  
import org.rut.util.algorithm.support.HeapSort; vDxe/x%  
import org.rut.util.algorithm.support.ImprovedMergeSort; B9H@e#[  
import org.rut.util.algorithm.support.ImprovedQuickSort; 8'4S8DM  
import org.rut.util.algorithm.support.InsertSort; "t_-f7fS7  
import org.rut.util.algorithm.support.MergeSort; R]btAu;Z  
import org.rut.util.algorithm.support.QuickSort; a8 mVFm  
import org.rut.util.algorithm.support.SelectionSort; ?`#/ 8PN  
import org.rut.util.algorithm.support.ShellSort; < !dqTJos  
yRfSJbzaf\  
/** KjE+QUa  
* @author treeroot Y~(Md@!0S  
* @since 2006-2-2 <c,u3cp  
* @version 1.0 DFd%9*N  
*/ NF0%}II&xK  
public class SortUtil { o)2W`i&  
public final static int INSERT = 1;  )8UWhl=  
public final static int BUBBLE = 2; AbYqf%~7`l  
public final static int SELECTION = 3; .On|uC)!  
public final static int SHELL = 4; o17ekML  
public final static int QUICK = 5; /gu%:vq  
public final static int IMPROVED_QUICK = 6; ykX/9y+-s  
public final static int MERGE = 7; naw0$kXTA  
public final static int IMPROVED_MERGE = 8; p-/|mL  
public final static int HEAP = 9; Y5FbU  
qh2ON>e;  
public static void sort(int[] data) { \u>"s   
sort(data, IMPROVED_QUICK); ^n"OL*ipG  
} Bxfc}vC.  
private static String[] name={ %ve:hym*  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :9_L6  
}; |Clut~G  
'Ub g0"F(  
private static Sort[] impl=new Sort[]{ HsHB!mQV  
new InsertSort(), j.L-{6_s>~  
new BubbleSort(), Ffv`kn@  
new SelectionSort(), PUBWZ^63  
new ShellSort(), 0 rXx RQ  
new QuickSort(), [5MJwRM^!;  
new ImprovedQuickSort(), P5#r,:zL  
new MergeSort(), F>-B 3x  
new ImprovedMergeSort(), .G)(0z("s  
new HeapSort() Q'YH>oGh^  
}; '=G|Sq^aO  
f/Hm{<BY  
public static String toString(int algorithm){ 0;:.B j  
return name[algorithm-1]; sh`s /JRf  
} cnFI &,FM  
\e'R @  
public static void sort(int[] data, int algorithm) { <p\6AnkMr  
impl[algorithm-1].sort(data); g)_e]&  
} |*'cF-lp6v  
MF'$~gxo  
public static interface Sort { .Jrqm  
public void sort(int[] data); ghX|3lI\q  
} krC{ed  
(h5'9r  
public static void swap(int[] data, int i, int j) { G_k~X"  
int temp = data; W81E!RyP`  
data = data[j]; OZTPOz.  
data[j] = temp; l#H#+*F  
} 2GWMlI  
} 'iGzkf}j  
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