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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。 S,Boutd  
插入排序: Y"~I(,nx!  
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package org.rut.util.algorithm.support; >tnQuFKg]  
quHq?oXV,  
import org.rut.util.algorithm.SortUtil; );V6YE  
/** TU{^/-l  
* @author treeroot .`& ($W  
* @since 2006-2-2 Iodk1Y;  
* @version 1.0 >6Y\CixN  
*/ `:!mPNW#  
public class InsertSort implements SortUtil.Sort{ t\E#8  
xz5Jli  
/* (non-Javadoc) jXkz,]Iy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F6R+E;"4R'  
*/ 5\}A8Ng  
public void sort(int[] data) { -! Hn,93  
int temp; 0&2(1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HDZB)'I  
} \];0S4SBy  
} V #W,}+_Sz  
} _eM\ /(v[  
z9pv|  
} bl NJ  
)#z c$D^U  
冒泡排序: cS/\&%7u  
rvuskXdo  
package org.rut.util.algorithm.support; xal+ buOiP  
z=B*s!G  
import org.rut.util.algorithm.SortUtil; $^?"/;8P5  
%KK6}d #  
/**  {A]"/AC  
* @author treeroot bB@1tp0+  
* @since 2006-2-2 :}}5TJwG  
* @version 1.0 `P<}MeJ\l  
*/ AJt *48H*G  
public class BubbleSort implements SortUtil.Sort{ :@{(^}N8u  
JsI` #  
/* (non-Javadoc) m07= _4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yKF"\^`@  
*/ Yo3my>N&g  
public void sort(int[] data) { Cqy84!Z<  
int temp; z[X>>P3<n  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $L_-U~^  
if(data[j] SortUtil.swap(data,j,j-1); 1@sy:{ d`  
} T%Xl(.Ft  
} ec+&K?T  
} V  @8+  
} u8L%R[#o  
P2pdXNV  
}  i1$ $86  
w%R(*,r6  
选择排序: J7q^4M+o:  
-/rP0h5#  
package org.rut.util.algorithm.support; /]m5HW(P7K  
S0\QZ/je  
import org.rut.util.algorithm.SortUtil; U8qb2'a8  
^.)oQo SE  
/** F8mS5oB|^  
* @author treeroot ,%7>%*nhk  
* @since 2006-2-2 /MYl:>e>  
* @version 1.0 @dei} !e  
*/ xX$'u"dsA  
public class SelectionSort implements SortUtil.Sort {  |`[0U  
,Bax0p  
/* F \6-s`(  
* (non-Javadoc) chk1tFV  
* X c~yr\%]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xR}^~14Bz  
*/ U Hh  
public void sort(int[] data) { jWk1FQte  
int temp; =vJ:R[Ilw  
for (int i = 0; i < data.length; i++) {  #v+ 2W  
int lowIndex = i; ^k6 A,Ak  
for (int j = data.length - 1; j > i; j--) { nR'!Ui  
if (data[j] < data[lowIndex]) { OP0KK^#  
lowIndex = j; .anXsjD%W  
} zLEl/yPE  
} r(WR=D{  
SortUtil.swap(data,i,lowIndex); tb36c<U-  
} \6A Yx[|  
} hB/4.K]8  
o;5 J=  
} $P'Y  
|8^53*f ?  
Shell排序: 6HocF/Ye  
Gy 0 m  
package org.rut.util.algorithm.support; bQd'objpY  
:_9MS0  
import org.rut.util.algorithm.SortUtil; &$$KC?!w  
(%.[MilxPM  
/** :"QR;O@  
* @author treeroot HZ%2WM  
* @since 2006-2-2 c"HB7  
* @version 1.0 <% #Dwo}  
*/ xVYy`_|  
public class ShellSort implements SortUtil.Sort{ F[am2[/<A  
NMJX `  
/* (non-Javadoc) w]<V~X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V$wW?+V  
*/ 2OT RP4U  
public void sort(int[] data) { 6L5j  
for(int i=data.length/2;i>2;i/=2){ Q8-;w{%  
for(int j=0;j insertSort(data,j,i); N,kPR  
} xAJ N(8?  
} 9~3;upWu!  
insertSort(data,0,1); v *'anw&Z  
} aia`mO]  
24{Tl q3  
/** -DAkVFsN  
* @param data xib?XzxGo  
* @param j <46> v<  
* @param i Hwb+@'o  
*/ 1M@OBfB8  
private void insertSort(int[] data, int start, int inc) { WXq=FZ-  
int temp; FTu6%~M/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G-7!|&  
} 8w4-Ud*$i  
} T0HNld  
} @nWhUH%  
/Z3 Mlm{  
} /%&Kbd  
HKB?G~  
快速排序: v@,n]"  
Q]h.{nN#PK  
package org.rut.util.algorithm.support; rF@njw@  
D;?cf+6$  
import org.rut.util.algorithm.SortUtil; 0FN;^hP5|  
|:7 ^  
/** {"v~1W)  
* @author treeroot FZFYwU\~.L  
* @since 2006-2-2 QK~44;LVIJ  
* @version 1.0 FS'|e?WU  
*/ )NF5,eD  
public class QuickSort implements SortUtil.Sort{ b@v_db]|t.  
q8Jhs7fv  
/* (non-Javadoc) "rl(%~Op  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "aL.`^.  
*/ x."R_>  
public void sort(int[] data) { {beu  
quickSort(data,0,data.length-1); D;1?IeS  
} `GDWy^-Q+!  
private void quickSort(int[] data,int i,int j){ -G'U\EXT  
int pivotIndex=(i+j)/2; nj1TX  
file://swap I8x,8}o>V  
SortUtil.swap(data,pivotIndex,j); w]@H]>sHd  
(r6'q0[  
int k=partition(data,i-1,j,data[j]); Aj{c s  
SortUtil.swap(data,k,j); CJa`[;i0y  
if((k-i)>1) quickSort(data,i,k-1); pH9xyN[:a  
if((j-k)>1) quickSort(data,k+1,j); isBtJ7\Sc  
Bm>>-nG;  
} rtSG- _[i  
/** d/&W[jJ  
* @param data a^vTBJXo  
* @param i iY,Ffu E  
* @param j ZA1:Y{ V  
* @return ']bw37_U,  
*/ ! V^wq]D2  
private int partition(int[] data, int l, int r,int pivot) { 4 EE7gkM5  
do{ Tv[| ^G9x  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Tv[h2_+E  
SortUtil.swap(data,l,r); a Fh9B\n  
} y:HH@aa)  
while(l SortUtil.swap(data,l,r); Sj'Iz #  
return l; !-veL1r  
} @D[tljc^  
v:F_! Q  
} AAXlBY6Y-  
fzdWM:g  
改进后的快速排序: ]Y3NmL  
11^.oa+`  
package org.rut.util.algorithm.support; H*H~~yQ  
MD):g @  
import org.rut.util.algorithm.SortUtil; @?2ES@G+Ji  
)FdS;]  
/** .vnQZ*6  
* @author treeroot Te6cw+6  
* @since 2006-2-2 39qIoaHT  
* @version 1.0 ;;|o+4Ob;  
*/ $ucDz f=o  
public class ImprovedQuickSort implements SortUtil.Sort { PyoIhe&ep  
3<x1s2U  
private static int MAX_STACK_SIZE=4096; $2E&~W %  
private static int THRESHOLD=10; 41v#|%\w  
/* (non-Javadoc) 1j*E/L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y3 "+4e  
*/ ^qY?x7mx1  
public void sort(int[] data) { eH_< <Xh!v  
int[] stack=new int[MAX_STACK_SIZE]; nYnB WDnV  
L`"j> ),  
int top=-1; gs"w 0[$  
int pivot; g-~]^$  
int pivotIndex,l,r; aGAeRF  
["_+~*  
stack[++top]=0; "h5.^5E6  
stack[++top]=data.length-1; /jl/SV+  
MBqw{cy  
while(top>0){ |SfCuV#g/<  
int j=stack[top--]; 7_Op(C4,nC  
int i=stack[top--]; .3'U(U  
~H c5M5m  
pivotIndex=(i+j)/2; ym8pB7E7%  
pivot=data[pivotIndex]; tfCK^{  
qKD Nw8>  
SortUtil.swap(data,pivotIndex,j); b5S4C2Ynq  
fm0]nT   
file://partition g)1`A 24  
l=i-1; sj3[ny;b  
r=j; *{("T  
do{ Js<DVe,  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /,,IM/(6^  
SortUtil.swap(data,l,r); C"QB`f:  
} O)!S[5YI  
while(l SortUtil.swap(data,l,r); 5c\dm  
SortUtil.swap(data,l,j); `]=0oDG:1!  
'Rb tcFb   
if((l-i)>THRESHOLD){ QuIZpP=  
stack[++top]=i; hb<cynY  
stack[++top]=l-1; $x*(D|\'<  
} I}+9@d  
if((j-l)>THRESHOLD){ x }@P  
stack[++top]=l+1; 3wMnTT"At  
stack[++top]=j; Mi} .  
} ]1 jhy2j  
^kK% 8 u  
} OH13@k  
file://new InsertSort().sort(data); fXe$Ug|5a  
insertSort(data); #}lWM%9Dy  
} <Gna}ALkg  
/** K: |-s4=  
* @param data h])oo:u'/Q  
*/ -%dBZW\u2  
private void insertSort(int[] data) { DB+oCE<.#  
int temp; bao"iv~z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FeNNzV=  
} w$Z%RF'p  
} L6"V=^Bq  
} kEp{L  
j[A:So  
} [:zP]l.|  
^'n;W<\p)  
归并排序: Q*hXFayx  
p^1~o/  
package org.rut.util.algorithm.support; @ qS Z=  
/ E!N:g<  
import org.rut.util.algorithm.SortUtil; 7h.fT`  
J@OK"%12  
/** D\| U_>  
* @author treeroot v_Hy:O}R  
* @since 2006-2-2 M0T z('~s  
* @version 1.0 h'+F'1=  
*/ 8#w%qij  
public class MergeSort implements SortUtil.Sort{ ME66BWg{  
<.2jQ#So  
/* (non-Javadoc) lPD&Doa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y'!"GrbZ  
*/ uvAJJIae'  
public void sort(int[] data) { DkSs^ym  
int[] temp=new int[data.length]; uu.}<VM.1  
mergeSort(data,temp,0,data.length-1); Iw^Q>MrT  
} k=cDPu -  
pqTaN=R8  
private void mergeSort(int[] data,int[] temp,int l,int r){ R9  Y@I  
int mid=(l+r)/2; ];'7~",Y  
if(l==r) return ; z8XWp[K  
mergeSort(data,temp,l,mid); {.?pl]Zl6  
mergeSort(data,temp,mid+1,r); dvM%" k  
for(int i=l;i<=r;i++){ .%!^L#g  
temp=data; TT no  
} kE:{#>[Uz  
int i1=l; ' &3,qT  
int i2=mid+1; wD:2sri  
for(int cur=l;cur<=r;cur++){ :cf#Tpq"  
if(i1==mid+1) K)  Ums-b  
data[cur]=temp[i2++]; !L@<?0x LW  
else if(i2>r) Bg] %  
data[cur]=temp[i1++]; Ylyk/  
else if(temp[i1] data[cur]=temp[i1++]; gZiwXb  
else X:lStO#5  
data[cur]=temp[i2++]; Y^nm{;G+  
} /=T:W*C  
} 7xFZJ#  
lwz\" 8  
} 7%W1M@  
; !C_}P  
改进后的归并排序: +&dkJ 4g[  
{5fL!`6w  
package org.rut.util.algorithm.support; O~v~s ' c&  
! ,0  
import org.rut.util.algorithm.SortUtil; vvu $8n  
M ziOpraj  
/** Wffz&pR8  
* @author treeroot &E1m{gB(  
* @since 2006-2-2 Y;'SD{On  
* @version 1.0 xI.0m  
*/ ~4|Trz2T  
public class ImprovedMergeSort implements SortUtil.Sort { 'c_K[p$  
5f MlOP_  
private static final int THRESHOLD = 10; nW} s  
xQ2: tY#?  
/* CB X}_]9X  
* (non-Javadoc) )\j dF-s  
* !!ma]pB,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g~$UU(HX  
*/ `/?'^A%Ik  
public void sort(int[] data) { f$tm<:)Y  
int[] temp=new int[data.length]; T:Ovh.$  
mergeSort(data,temp,0,data.length-1); 7>f"4r_r6<  
} u:f.;?  
awI{%u_(nA  
private void mergeSort(int[] data, int[] temp, int l, int r) { CUHT5J*sY  
int i, j, k; " Zx<hL*  
int mid = (l + r) / 2; nt+OaXe5D  
if (l == r) ~A1!!rJX  
return; m=+x9gL2  
if ((mid - l) >= THRESHOLD) 3<xDxj 0<  
mergeSort(data, temp, l, mid); >x3lA0m  
else B^]PKjLNZ  
insertSort(data, l, mid - l + 1); IibYGF  
if ((r - mid) > THRESHOLD) H cyoNY  
mergeSort(data, temp, mid + 1, r); [q C0YM  
else Nd+1r|e'  
insertSort(data, mid + 1, r - mid); GKjtX?~1  
u>G9r#~`k  
for (i = l; i <= mid; i++) { 9zS   
temp = data; x(xi%?G  
} `R>z{-@=  
for (j = 1; j <= r - mid; j++) { KQvSeH>r  
temp[r - j + 1] = data[j + mid]; ~**x_ v  
} .Zj`_5C  
int a = temp[l]; C\aHr!  
int b = temp[r]; vf$IF|  
for (i = l, j = r, k = l; k <= r; k++) { +iFt)  
if (a < b) { | oK9o6m4  
data[k] = temp[i++]; Aq*?Q/pV  
a = temp; :enR8MS  
} else { @K+gh#  
data[k] = temp[j--]; uo J0wG.  
b = temp[j]; f$6N  
} h6OQeZ.  
} ]@ke_' "  
} wpN3-D  
fISK3t/=C  
/** _ilitwRN3  
* @param data UAT\ .  
* @param l 9cUa@;*1  
* @param i $A-X3d;'\/  
*/ biU_ImJ>0  
private void insertSort(int[] data, int start, int len) { |Tc4a4jS  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zL9~gJ  
} $+_1F`  
} fK+ 5   
} pjX=:K|  
} Eu:/U*j  
C}pm>(F~  
堆排序: <R;wa@a>  
gwQMy$  
package org.rut.util.algorithm.support; _@!vF,Wcf  
-{k8^o7$  
import org.rut.util.algorithm.SortUtil; y.J>}[\&x  
}8#Ed;%K  
/** bT&{8a  
* @author treeroot u~j H  
* @since 2006-2-2 R:YVmqd  
* @version 1.0 FZ ?eX`,  
*/ BZHoRd{EH  
public class HeapSort implements SortUtil.Sort{ ]W14'Z  
i9XpP(mf  
/* (non-Javadoc) Q,^/Lm|]k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t@9-LYbL  
*/ V){Io_"  
public void sort(int[] data) { r6'dEa  
MaxHeap h=new MaxHeap(); _1qR1< V  
h.init(data); 3MFT P5~  
for(int i=0;i h.remove(); p\&/m  
System.arraycopy(h.queue,1,data,0,data.length); !?0C(VL(:  
} ;'8Wl  
N+B!AK0.  
private static class MaxHeap{ HXSryjF?  
"q+Z*   
void init(int[] data){ g.@[mf0r  
this.queue=new int[data.length+1]; `dG;SM$T,  
for(int i=0;i queue[++size]=data; #gO[di0WhC  
fixUp(size); c/A?-9  
} 05T?c{ ;  
} i79$D:PcLa  
h!%y,4IBR  
private int size=0; m2jts(stp  
6bhb_U'f  
private int[] queue; R|M]mwa^w  
n}IGxum8`  
public int get() { xZ P SUEG  
return queue[1]; qb=2J5su  
} &BrFcXF  
; Z7!BU  
public void remove() { h7q{i|5  
SortUtil.swap(queue,1,size--); 5rB>)p05[  
fixDown(1); 4RB%r  
} gM>?w{!LBx  
file://fixdown '~K]=JP  
private void fixDown(int k) { {qi #  
int j; _7Y-gy#\a  
while ((j = k << 1) <= size) { =3QhGFd  
if (j < size %26amp;%26amp; queue[j] j++; (b//YyqN  
if (queue[k]>queue[j]) file://不用交换 >pLJ ,Z  
break; FEu"b@v  
SortUtil.swap(queue,j,k); SfC* ZM}<  
k = j; ||QK)$"  
} O}Pqbx&  
} cMZy~>  
private void fixUp(int k) { 2SC-c `9)  
while (k > 1) { M.t,o\xl  
int j = k >> 1; h`\ $8 oV  
if (queue[j]>queue[k]) UHvA43  
break; lWj*tnnn[  
SortUtil.swap(queue,j,k); 7)jN:+4N  
k = j; 6[k<&;  
} ~S Bb2*ID  
} u1M8nb  
9 ;p5z[jI  
} mI,lW|/l,  
S,6/X.QBv  
} zgEN2d  
0 a{hCx|$J  
SortUtil: 7`J2/(  
n'V{  
package org.rut.util.algorithm; )~=8Ssu  
~nU9j"$  
import org.rut.util.algorithm.support.BubbleSort; -o%? ]S  
import org.rut.util.algorithm.support.HeapSort; r YKGX?y  
import org.rut.util.algorithm.support.ImprovedMergeSort; n]$rLm%^  
import org.rut.util.algorithm.support.ImprovedQuickSort; VtI`Qc jc  
import org.rut.util.algorithm.support.InsertSort; [(x*!,=  
import org.rut.util.algorithm.support.MergeSort; 4h|*r !  
import org.rut.util.algorithm.support.QuickSort; g]: [^p  
import org.rut.util.algorithm.support.SelectionSort; 0j(U &  
import org.rut.util.algorithm.support.ShellSort; cWx`y><  
y*+8Z&i.:  
/** VqW5VL a  
* @author treeroot ">. k 6Q  
* @since 2006-2-2 :Q=y'<  
* @version 1.0 SgewAng?@o  
*/ .(q'7Q Z/  
public class SortUtil { dV38-IfGkl  
public final static int INSERT = 1; "[?DS  
public final static int BUBBLE = 2; AJEbiP  
public final static int SELECTION = 3; igA?E56?  
public final static int SHELL = 4; $rcv@-l  
public final static int QUICK = 5; T.;{f{  
public final static int IMPROVED_QUICK = 6; F ><_gIT  
public final static int MERGE = 7; UMRFTwY  
public final static int IMPROVED_MERGE = 8; lL:!d.{  
public final static int HEAP = 9; 4E5;wH  
M{G}-QK_.  
public static void sort(int[] data) { NJsaTBT  
sort(data, IMPROVED_QUICK); U&BCd$  
} KLW5Ad:/rI  
private static String[] name={ T(x@ gwc  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L5x;# \#p  
}; WyatHC   
E8r6P:5d`  
private static Sort[] impl=new Sort[]{ N Nk  
new InsertSort(), "NA<^2W@J  
new BubbleSort(), XyN " Jr  
new SelectionSort(), $+GDPYm'  
new ShellSort(), u*2?Gky  
new QuickSort(), zO"De~[9  
new ImprovedQuickSort(), S:j{R^$k  
new MergeSort(), %P s.r{%{  
new ImprovedMergeSort(), C @<T(`o  
new HeapSort() r'{N_|:vv  
}; v; i4ZSV^A  
xA7~"q&u  
public static String toString(int algorithm){ tcXXo&ZS  
return name[algorithm-1]; MF<ZB_@  
} ]?1_.Wjtt  
^PNDxtd|v  
public static void sort(int[] data, int algorithm) { k5aB|xo  
impl[algorithm-1].sort(data); ]>(pj9)  
} J";N^OR{A%  
Gl'G;F$Y-  
public static interface Sort { W/BPf{U  
public void sort(int[] data); @!dIa1Q"  
} * rlV E  
=9ff9 83  
public static void swap(int[] data, int i, int j) { 4xg)e` *U  
int temp = data; e7"T37  
data = data[j]; X$6NJ(2G  
data[j] = temp; 2T+-[}*  
} e,}h^^"  
} `OMX 9i  
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