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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。 C#U< k0R  
插入排序: `1fJ:b/M  
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package org.rut.util.algorithm.support; ?W[J[cb  
Qp kKVLi  
import org.rut.util.algorithm.SortUtil; R`@8.]cpPy  
/** q_<*esZ,  
* @author treeroot a^*cZ?Ta  
* @since 2006-2-2 <XQN;{xSa  
* @version 1.0 AI1@-  
*/ :DtZ8$I`]C  
public class InsertSort implements SortUtil.Sort{ UF&0 & `@  
Vs_\ykO  
/* (non-Javadoc) r6d0x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MzEm*`<  
*/ [x;(cISK1  
public void sort(int[] data) { gYTyH.  
int temp; (KT38RhA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jo9J%vo  
} L6|Hgrj-u  
} e[x?6He,$  
} /=8O&1=D  
)KSisEL  
} :/o C:z\h  
{ 1+Cw?1d  
冒泡排序: A",eS6  
]b4pI*:$I  
package org.rut.util.algorithm.support; xS= _yO9-  
<8u>_o6  
import org.rut.util.algorithm.SortUtil; o3Mf:;2cC  
BZovtm3 E  
/** k$ZRZ{ E+  
* @author treeroot ]Nnxnp  
* @since 2006-2-2 E]?)FH<oP  
* @version 1.0 <Z{vC  
*/ iuiAK  
public class BubbleSort implements SortUtil.Sort{ P@qMJ}<j  
?qju DD  
/* (non-Javadoc) Ct4LkmD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Mdbt o~<  
*/ L +L 9Y}  
public void sort(int[] data) { ;tJWOm  
int temp; :]vA 2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ iV5}U2Vh  
if(data[j] SortUtil.swap(data,j,j-1); sW }<zGYd  
} 5\okU"{d7  
} L ;6b+I  
} hS4.3]ei  
} dZPW2yf  
x>}B#  
} )VNM/o%Q  
lc]V\ 'e  
选择排序: z)}3**3'y  
\I?w)CE@R  
package org.rut.util.algorithm.support; he"L*p*H  
Hal7 MP  
import org.rut.util.algorithm.SortUtil; YPu9Q  
{S G*  
/** d:A}CBTSY  
* @author treeroot WrNLGkt  
* @since 2006-2-2 Nwgu P  
* @version 1.0 UcgG  
*/ rVY?6OMkd  
public class SelectionSort implements SortUtil.Sort { t{!/#eQC  
N1%p"(  
/* aS el* L  
* (non-Javadoc) 1n_;kaY  
* )B6# A0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5L F/5`  
*/ ',GV6kt_k  
public void sort(int[] data) { te i`/  
int temp; 3?Lgtkb8  
for (int i = 0; i < data.length; i++) { z 5'ZN+  
int lowIndex = i; X/l;s  
for (int j = data.length - 1; j > i; j--) { o+NMA (  
if (data[j] < data[lowIndex]) { Q $]YD pCM  
lowIndex = j; y,Jh@n';|  
} %Uy%kN_&  
} ^5>s7SGB"  
SortUtil.swap(data,i,lowIndex); N>0LQ MI  
} k'Gw!p}  
} %<ic%gt`#  
v9=}S\=Cd  
} {Bh("wg$Lk  
n#4Gv|{XMD  
Shell排序: [>f]@>  
@xS]!1-  
package org.rut.util.algorithm.support; i\)3l%AK]T  
w d/G|kNO  
import org.rut.util.algorithm.SortUtil; 3Hw[s0[$  
fxd0e;NAAh  
/** B8H75sz  
* @author treeroot k^%2_H  
* @since 2006-2-2 b HE7yv [  
* @version 1.0 nU2V]-qY  
*/ 'f+NW &   
public class ShellSort implements SortUtil.Sort{ )s)_XL  
=LI:S|[4  
/* (non-Javadoc) | f\D>Y%)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eCWPhB 6l  
*/ =\Iu$2r`  
public void sort(int[] data) { v>H=,.`0\  
for(int i=data.length/2;i>2;i/=2){ z C=a3  
for(int j=0;j insertSort(data,j,i); GKZN}bOm\  
} Lg4YED9#  
} /ylc*3e'4  
insertSort(data,0,1); 9[VxskEh  
} /1d<P! H  
"UG K8x  
/** &J$##B  
* @param data (u&`Ij9  
* @param j e4\dpvL  
* @param i ^2S# Uk  
*/ RNWX.g)b  
private void insertSort(int[] data, int start, int inc) { b*EXIzQ  
int temp; _'!kuE,*1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GS;%zdH~  
} t> xd]ti  
} )&,{?$.  
} 8AL\ST51x"  
P|xG\3@Z  
} mrM4RoO  
Qhn;`9+L  
快速排序: fvqd'2 t  
T2=HG Z  
package org.rut.util.algorithm.support; s_[VHPN  
DMn4ll|  
import org.rut.util.algorithm.SortUtil; $ 4m*kQ  
$SY]fNJQ  
/** I4t*?  
* @author treeroot TTZe$>f  
* @since 2006-2-2 ~aTKG|74  
* @version 1.0 <jA105U"m>  
*/ s^hR\iY  
public class QuickSort implements SortUtil.Sort{ iPj~I  
e,gyQjJR  
/* (non-Javadoc) eSfnB_@x2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8e&p\%1  
*/ )nfEQ)L;h}  
public void sort(int[] data) { Am"(+>W21  
quickSort(data,0,data.length-1); YcDe@Zuwn  
} @S^ASDuQU7  
private void quickSort(int[] data,int i,int j){ {ci.V*:"  
int pivotIndex=(i+j)/2; `@Oa lg  
file://swap j:,9%tg  
SortUtil.swap(data,pivotIndex,j); 91Z'  
Vzg=@A#  
int k=partition(data,i-1,j,data[j]); }m- "8\_D  
SortUtil.swap(data,k,j); I G ~`i I  
if((k-i)>1) quickSort(data,i,k-1); nZk +  
if((j-k)>1) quickSort(data,k+1,j); ;9a 6pz<  
`]i []|  
} %*}Y6tl'|  
/** cU.9}-)  
* @param data "i^ GmVn  
* @param i ravyiO L  
* @param j >''U  
* @return A8r^)QJP{  
*/ /F)H\*  
private int partition(int[] data, int l, int r,int pivot) { :-T*gqj|  
do{ !l@zT}i??  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); V3Z]DA  
SortUtil.swap(data,l,r); ino:N5&;;  
} fmX!6Kv  
while(l SortUtil.swap(data,l,r); 2JGL;U$  
return l; 7gF"=7{-  
} (p#0)C  
D{8PQ2x>  
} 3SttHu0X  
c9"r6j2m5  
改进后的快速排序: ;&b.T}Nf06  
aB~S?.l  
package org.rut.util.algorithm.support; C1kYl0 zR[  
<ABX0U[*  
import org.rut.util.algorithm.SortUtil; Ifc]K?  
saf&dd  
/** Fh$slow4!  
* @author treeroot yLE7>48  
* @since 2006-2-2 w"Y` ]2  
* @version 1.0 :aCrX  
*/ tBbOY}.VD  
public class ImprovedQuickSort implements SortUtil.Sort { "Jq8?FoT  
FzQTDu9  
private static int MAX_STACK_SIZE=4096; `F YjQ e"p  
private static int THRESHOLD=10; =@&cHY  
/* (non-Javadoc) s$ENFp7P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EOj"V'!  
*/ b?X.U}62_  
public void sort(int[] data) { l e4?jQQ@L  
int[] stack=new int[MAX_STACK_SIZE]; +ZMls [  
@mP]*$00  
int top=-1; t_^X$pL  
int pivot; Fb22p6r  
int pivotIndex,l,r; ~}EMk3  
GPz(j'jU  
stack[++top]=0; P262Q&.}d  
stack[++top]=data.length-1; tGvG  
@hQlrq5c  
while(top>0){ y;w x?1)  
int j=stack[top--]; U4f5xUY0)  
int i=stack[top--]; V&8Vw F^-  
klg25#t  
pivotIndex=(i+j)/2; gxz-R?.  
pivot=data[pivotIndex]; m7a#qs; ,  
hI%bjuq  
SortUtil.swap(data,pivotIndex,j); ryF7  
f"7O  "6  
file://partition 3~S'LxV  
l=i-1; IN8>ZV`j)  
r=j; 00v&lQBW  
do{ ]^':Bmq  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |F,R&<2  
SortUtil.swap(data,l,r); dI&!e#Y  
} j`^$#  
while(l SortUtil.swap(data,l,r); $vC1 K5sLk  
SortUtil.swap(data,l,j); QO;N9ZI  
zJP6F.Ov!  
if((l-i)>THRESHOLD){ @k[R/,#'[t  
stack[++top]=i; b2aF 'y/  
stack[++top]=l-1; EVp,Q"V]  
} 3bk|<7tl  
if((j-l)>THRESHOLD){ ) [0T16  
stack[++top]=l+1; f` =CpO*  
stack[++top]=j; _XJ2fA )  
} jK \T|vGJa  
+ a- 6Q ~  
} VE+IKj!VG0  
file://new InsertSort().sort(data); &%})wZ+Dj  
insertSort(data); m'P1BLk  
} l^ZI* z7N  
/** /VmR<C?h  
* @param data R\o<7g-|  
*/ M@ed>.  
private void insertSort(int[] data) { MZ Aij  
int temp; R|O8RlH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u[nyW3MZ  
} }cT_qqw(f%  
} ,0x y\u  
} .>Ljnk  
DXz} YIEC  
} H*#s }9=kZ  
fRg`UI4w}  
归并排序: I%- " |]$  
q_-7i  
package org.rut.util.algorithm.support; n6s}ww)  
n 1!?"m!  
import org.rut.util.algorithm.SortUtil; *OuStr \o  
)Ke*JJaq  
/** foJdu+^  
* @author treeroot ,9WBTH8  
* @since 2006-2-2 aW>6NDq(  
* @version 1.0 bh^LIU  
*/ ,-7R(iMd  
public class MergeSort implements SortUtil.Sort{ =-_B:d;  
m(pE5B(  
/* (non-Javadoc) EwOV;>@T?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V(Ub!n:j  
*/ K|dso]b/  
public void sort(int[] data) { .e_cgad :  
int[] temp=new int[data.length]; ^]{R.(#z  
mergeSort(data,temp,0,data.length-1); ByCnD  
} `jwa<N4e@  
7o8{mp'_  
private void mergeSort(int[] data,int[] temp,int l,int r){ V<Z[ nq  
int mid=(l+r)/2; MEwo}=B  
if(l==r) return ; ]X I*Wsn  
mergeSort(data,temp,l,mid); /_ `lz^  
mergeSort(data,temp,mid+1,r); gx%|Pgd  
for(int i=l;i<=r;i++){ ABUSTf<  
temp=data; bV ZMW/w  
} zN  [2YJ$  
int i1=l; eImn+_ N3  
int i2=mid+1; 0v9rv.Y"  
for(int cur=l;cur<=r;cur++){ Iu$K i  
if(i1==mid+1) lP<:tR~K  
data[cur]=temp[i2++]; '` pDngX  
else if(i2>r) <~ Sz04  
data[cur]=temp[i1++]; 7)s^8+  
else if(temp[i1] data[cur]=temp[i1++]; "~D]E7Q3y  
else E9;|'Vy<E  
data[cur]=temp[i2++]; (\SA *.)  
} _q~=~nub  
} tKpmm`2  
,?L2wl[  
} O%FPS=  
r/SG 4  
改进后的归并排序: x g0iN'e'K  
V7/I>^X  
package org.rut.util.algorithm.support; }Hn/I,/  
~R(%D-k  
import org.rut.util.algorithm.SortUtil; )E~ 79!  
>%wLAS",w  
/** tg{H9tU;  
* @author treeroot )oyIe)  
* @since 2006-2-2 *8LMn   
* @version 1.0 7}X[ 4("bB  
*/ 3D2E?$dX  
public class ImprovedMergeSort implements SortUtil.Sort { Rz.?i+  
() j =5KDu  
private static final int THRESHOLD = 10; )kP5u`v  
'_V2!?+RU+  
/* t^w"w`v\u  
* (non-Javadoc) ;UxP Kpl  
* B'fb^n<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }K&7%N4LZ  
*/ ?]*^xL;x?  
public void sort(int[] data) { VY3&  
int[] temp=new int[data.length]; -]QD|w3dp  
mergeSort(data,temp,0,data.length-1); ^/r7@:  
} m@^1JlH  
>(;{C<6|^  
private void mergeSort(int[] data, int[] temp, int l, int r) { /oriW;OF  
int i, j, k; 8?%-'z.  
int mid = (l + r) / 2; dxmE3*b`  
if (l == r) ^Y'HaneoM  
return; _ ]Z s,Hy  
if ((mid - l) >= THRESHOLD) R00eisd  
mergeSort(data, temp, l, mid); ?:)]h c  
else +u3=dj"[  
insertSort(data, l, mid - l + 1); PS[+~>%  
if ((r - mid) > THRESHOLD) S;)w.  
mergeSort(data, temp, mid + 1, r); -q*i_r:,  
else \ioH\9  
insertSort(data, mid + 1, r - mid); 9o+)?1\  
4y+< dw  
for (i = l; i <= mid; i++) { `5C,N!d8X  
temp = data; og kD^   
} svq<)hAf<  
for (j = 1; j <= r - mid; j++) { TTKs3iTXz  
temp[r - j + 1] = data[j + mid]; PF53mUs4  
} ?nmn1`UT  
int a = temp[l]; pim!.=vN/U  
int b = temp[r]; 3J5!oF{H  
for (i = l, j = r, k = l; k <= r; k++) { x= 5N3[5  
if (a < b) { vMm1Z5S/  
data[k] = temp[i++]; K|Di1)7=/  
a = temp; F 9@h|#an  
} else { /@,j232  
data[k] = temp[j--]; ]4pkcV P  
b = temp[j]; aL&n[   
} o:_Xv.HRZo  
} W`u[h0\c  
} fyByz=pl  
P3=W|81e  
/** ,=#F//  
* @param data BYMi6wts  
* @param l o<|P9#(U"  
* @param i m+Rv+_R  
*/ <x<"n t  
private void insertSort(int[] data, int start, int len) { 6e[VgN-s  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); e8GEoD  
} tV{ 4"Ij9[  
} rl #p".4q  
} l\@)y4 +  
} ::}{_ Z  
s;6CExH  
堆排序: * /:x sI  
l p(8E6  
package org.rut.util.algorithm.support; Ro9tZ'N!S  
|\7 ET[X q  
import org.rut.util.algorithm.SortUtil; :>Ay^{vf=  
L2[f]J%  
/** %@6}GmK^  
* @author treeroot }n4V|f-  
* @since 2006-2-2 #~<0t(3Q  
* @version 1.0 #g]vc_V  
*/ `0Oh_8"  
public class HeapSort implements SortUtil.Sort{ "$2 y-|  
n:{qC{D-qS  
/* (non-Javadoc) r(RKwr:m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6I4oi@hZz  
*/ '2[albxSc  
public void sort(int[] data) {  O4og?h>  
MaxHeap h=new MaxHeap(); y9>ZwYN  
h.init(data); R5X.^u  
for(int i=0;i h.remove(); B Ere*J  
System.arraycopy(h.queue,1,data,0,data.length); !Ikt '5/  
} ]%IT|/;9Y  
(adyZ/j  
private static class MaxHeap{ _N{RVeO  
sXD1C2o  
void init(int[] data){ f)^_|8  
this.queue=new int[data.length+1]; Ht&:-F+dm  
for(int i=0;i queue[++size]=data; Ir qZi1  
fixUp(size); '.81zpff  
} ]Ccg`AR{  
} $h*L=t(  
\cUC9/ b  
private int size=0; VB, ?Mo}R  
4}eepJOn  
private int[] queue; qa0 yg8,<  
id2j7|$,  
public int get() { F7O(Cy"1  
return queue[1]; i5CK*"$Q  
} CTZh0 x  
U qFv}VsnF  
public void remove() { "saUai4z  
SortUtil.swap(queue,1,size--); \xnWciQ#{  
fixDown(1); RM!<8fXYD  
} 4<lRPsvgc  
file://fixdown LQngK7>  
private void fixDown(int k) { !g(KK|`,m  
int j; 98uV6b~g  
while ((j = k << 1) <= size) { \kU &^Hi  
if (j < size %26amp;%26amp; queue[j] j++; n8".XS  
if (queue[k]>queue[j]) file://不用交换 >VN5`Zlw\C  
break; '>' wK.  
SortUtil.swap(queue,j,k); 5sx1Zq7  
k = j; vM*($qpAy  
} q@nP}Pv&5  
} ~e+\k>^eN  
private void fixUp(int k) { >U]C/P[+  
while (k > 1) { :uK? 4  
int j = k >> 1; ecCr6)  
if (queue[j]>queue[k]) enSXP~9w  
break; %\H|B0  
SortUtil.swap(queue,j,k); w (/aiV  
k = j; Q2F+?w;,  
} H\:lxR^  
} RHO(?8"_  
K%F,='P}  
} xK6n0] A  
JSTuXW  
} uoX:^'q   
\8?Tdx=  
SortUtil: Z`KC%!8K  
c%'RR?Tl  
package org.rut.util.algorithm; %|oJ>+  
&'}RrW-s  
import org.rut.util.algorithm.support.BubbleSort; 17G'jiY H  
import org.rut.util.algorithm.support.HeapSort; TTt#a6eJ  
import org.rut.util.algorithm.support.ImprovedMergeSort; *2 2nVKi {  
import org.rut.util.algorithm.support.ImprovedQuickSort; hR Ue<0o:  
import org.rut.util.algorithm.support.InsertSort; NT+?  #0I  
import org.rut.util.algorithm.support.MergeSort; Z^IPZF  
import org.rut.util.algorithm.support.QuickSort; #>mr[   
import org.rut.util.algorithm.support.SelectionSort; Qg[/%$x.  
import org.rut.util.algorithm.support.ShellSort; bS"fkf9  
Htgx`N|  
/** 2VE9}%i  
* @author treeroot G %Q^o5m  
* @since 2006-2-2 ~nG(5:A5g/  
* @version 1.0 +E.GLn2 /  
*/ <oX7P69  
public class SortUtil { !WpBfd>v.I  
public final static int INSERT = 1; h >s!K9  
public final static int BUBBLE = 2; BC&9fr  
public final static int SELECTION = 3; !`M|C?b  
public final static int SHELL = 4; ` M3w]qJ<}  
public final static int QUICK = 5; zN:K%AiGxe  
public final static int IMPROVED_QUICK = 6; f^"N!f a  
public final static int MERGE = 7; LkK~%tY  
public final static int IMPROVED_MERGE = 8; @)4]b+8Z  
public final static int HEAP = 9; #~l(]h@ )  
<F=xtyl7  
public static void sort(int[] data) { H s"HID  
sort(data, IMPROVED_QUICK); <c,u3cp  
} X7i/fm{l'  
private static String[] name={ 371 TvZ4  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" HO}Hh[{V9  
}; 2g>SHS@1>  
/(BMG/Tb  
private static Sort[] impl=new Sort[]{ q~vDz]\G  
new InsertSort(), nC}6B).el  
new BubbleSort(), rjPL+T_  
new SelectionSort(), j(k: @  
new ShellSort(), 70;Jl).\{  
new QuickSort(), [.S#rGYk  
new ImprovedQuickSort(), S4h:|jLUF  
new MergeSort(), *?Kr*]dnLl  
new ImprovedMergeSort(), :C65-[PSdO  
new HeapSort() A0q|J/T  
}; `P3>S(Tgy  
Qe5U<3{JZ  
public static String toString(int algorithm){ j"|=C$Kn/  
return name[algorithm-1]; !/3B3cG  
} !cAyTl(_  
\&iP`v`K  
public static void sort(int[] data, int algorithm) { D0#x Lh  
impl[algorithm-1].sort(data); PUBWZ^63  
} -!N&OZ+R   
0 Emr<n  
public static interface Sort { q"<acqK  
public void sort(int[] data); (Xq)py9  
} )Ib<F 7v  
*i- _6s  
public static void swap(int[] data, int i, int j) { 43Qtj$F  
int temp = data; KB'qRnkc  
data = data[j]; sh`s /JRf  
data[j] = temp; @g$Gti  
} C~N/A73gF  
} zOqn<Y@  
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