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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。 s9~W( Wi  
插入排序: I_'S|L  
sZPPS&KoP3  
package org.rut.util.algorithm.support; IQoz8!guh:  
q>%KIBh(  
import org.rut.util.algorithm.SortUtil; cuBOE2vB.  
/** 5l2Ph4(  
* @author treeroot cG,B;kMjo  
* @since 2006-2-2 ~o= Sxaf  
* @version 1.0 PLKp<kg  
*/ U'UV=:/-  
public class InsertSort implements SortUtil.Sort{ &'N{v@Oi)  
"dXRUg"  
/* (non-Javadoc) %(Nu"3|$K=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bAeC=?U  
*/ @ _U]U  
public void sort(int[] data) { F5gL-\6  
int temp; ?a7PxD.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c#$B;?  
} CVo@zr$  
} )(9>r /bq  
} 5.]+K<:h"A  
EJ.oq*W!*J  
} IwKhun  
k8F<j)"  
冒泡排序: =;7gxV3;  
x:88E78  
package org.rut.util.algorithm.support; JaXT B"e  
Q$Ga.fI  
import org.rut.util.algorithm.SortUtil; @R_a'v-  
D*o_IrG_(  
/** "2i{ L '  
* @author treeroot YxlV2hcX;  
* @since 2006-2-2 ,u#uk7V  
* @version 1.0 5:Pp62  
*/ 8E&}+DR?  
public class BubbleSort implements SortUtil.Sort{ /WRS6n  
68Vn]mr#  
/* (non-Javadoc) w>p0ldi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 #TzW9  
*/ }tF/ca:XPQ  
public void sort(int[] data) { C~ t?<  
int temp; NEa :  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |Up+Kc:z/n  
if(data[j] SortUtil.swap(data,j,j-1); 0Jm6 r4s?  
} UQ:H3  
} U[*VNJSp  
} =${]j  
} /1F%w8Iqh  
G+stt(k:  
} Bq.@CxK  
^ llZf$`  
选择排序: ;n%SjQ'%  
]|it&4l  
package org.rut.util.algorithm.support; ;&q}G1  
mcy\nAf5%  
import org.rut.util.algorithm.SortUtil; S_/9eI~X  
OXe+=Lp<  
/** 8W#/=Xh?  
* @author treeroot <vJPKQ`=:  
* @since 2006-2-2 ns[v.YDL  
* @version 1.0 au@ LQxKQ  
*/ 'MRvH lCM  
public class SelectionSort implements SortUtil.Sort { L^i=RGx  
lYmqFd~p  
/* X ,n4_=f  
* (non-Javadoc) (+6 8s9XS7  
* T$T:~8tK3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J( JsfU4  
*/ NdGIH/Y;M  
public void sort(int[] data) { , (dg]7  
int temp; I_6NY,dF  
for (int i = 0; i < data.length; i++) { {STOWuY  
int lowIndex = i; 3I&=1o  
for (int j = data.length - 1; j > i; j--) { <f.*=/]W2  
if (data[j] < data[lowIndex]) { )b`Xc+{>  
lowIndex = j; k4fc 5P  
} $3<,"&;Ecs  
} *GleeJWz  
SortUtil.swap(data,i,lowIndex); Hy ^E m  
} T6m#sVq  
} ;Pf |\q  
r8g4NsRVtv  
} BLZ#vJR  
I$/*Pt];  
Shell排序: T Po%zZo  
fZ1v|  
package org.rut.util.algorithm.support; H e ABU(o4  
CF"$&+s9  
import org.rut.util.algorithm.SortUtil; 5v <>%=  
uMVM-(g%  
/** f2Zi.?``H  
* @author treeroot w}No ^.I*4  
* @since 2006-2-2 kR$>G2$!  
* @version 1.0 Atsi}zTR\  
*/ R)i  
public class ShellSort implements SortUtil.Sort{ b ?9c\-}  
fHhm)T8KB  
/* (non-Javadoc) rE0?R( _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2 gz}]_  
*/ L08>9tf`  
public void sort(int[] data) { Ay)q %:qx  
for(int i=data.length/2;i>2;i/=2){ Fx,08  
for(int j=0;j insertSort(data,j,i); AQ n>K{M  
} <i{O\K]9  
} Ww5c9orXn  
insertSort(data,0,1); =OfU#i"c  
} xw_VK1  
5tPBTS<<"L  
/** h'VN& T,  
* @param data x g=}MoX  
* @param j x ,$N!X  
* @param i HR)Dz~Obw  
*/ ! |SPOk  
private void insertSort(int[] data, int start, int inc) { J)1:jieQ  
int temp; 1HQh%dZZ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0#(K}9T)  
} H`u8}{7  
} A4LGF  
} @X`~r8&  
i`[5%6\"&  
} tHNvb\MR$  
W>C!V  
快速排序: GC?X>AC:  
)aoB -Lu  
package org.rut.util.algorithm.support; dw %aoe  
' JHCf  
import org.rut.util.algorithm.SortUtil; @L^Fz$Sx  
u] C/RDTH  
/** 5dffF e  
* @author treeroot Y.I-h l1<r  
* @since 2006-2-2 wMy$T<:   
* @version 1.0 JA W}]:jC  
*/ 6OYXcPW'  
public class QuickSort implements SortUtil.Sort{ {FzL@!||  
[8*Ovd  
/* (non-Javadoc) z0J$9hEg89  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,h21 h?6  
*/ ^l1tQnj)7  
public void sort(int[] data) { EtN@ 6xP  
quickSort(data,0,data.length-1); U3r[ysf  
} !:e|M|T'I*  
private void quickSort(int[] data,int i,int j){ (]wi^dE  
int pivotIndex=(i+j)/2; 4R!A.N9  
file://swap \m-fLX  
SortUtil.swap(data,pivotIndex,j); {zoUU  
}Ictnb  
int k=partition(data,i-1,j,data[j]); T1zft#1~  
SortUtil.swap(data,k,j); QX (x6y>Q  
if((k-i)>1) quickSort(data,i,k-1); 97:1L4w.(  
if((j-k)>1) quickSort(data,k+1,j); TJ(PTB;  
';` fMcN  
} pT]M]/y/:  
/** x4v@Kk/  
* @param data 6cof Zc$  
* @param i L'{;V\d  
* @param j 2}j2Bhc  
* @return g-'y_'%0G  
*/ a2W}Wb+  
private int partition(int[] data, int l, int r,int pivot) { 3oX%tx  
do{ fs4pAB#F  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &SS"A*xg  
SortUtil.swap(data,l,r); XfA3Ez,}  
} Hv%(9)-8  
while(l SortUtil.swap(data,l,r);  {ZFa +  
return l; GF~^-5  
} L/(e/Jalg  
4mOw[}@A  
} ga#,42)H  
9dA(f~  
改进后的快速排序: bb;fV  
>4TJH lB}8  
package org.rut.util.algorithm.support; ZWMX!>o<  
gd<8RVA  
import org.rut.util.algorithm.SortUtil; }]vj"!?a  
FD(zj^*  
/** 7=XQgbY/  
* @author treeroot ':# ?YQ}2  
* @since 2006-2-2 lEi,duS)  
* @version 1.0 LLmgk"  
*/ <[C 9F1]Ya  
public class ImprovedQuickSort implements SortUtil.Sort { vy/U""w`  
C>cc!+n%H  
private static int MAX_STACK_SIZE=4096; EZ #UdK_  
private static int THRESHOLD=10; lp[3z& u  
/* (non-Javadoc) k Fv\V   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T(+F6d=1  
*/ DGY#pnCu  
public void sort(int[] data) { $gDp-7  
int[] stack=new int[MAX_STACK_SIZE]; Orh5d 7+S  
Lhl) pP17  
int top=-1; 3DK^S2\zBm  
int pivot; nR/; uTTz  
int pivotIndex,l,r; ->wY|7  
d_J?i]AP|'  
stack[++top]=0; F$r8 hj`  
stack[++top]=data.length-1; mDE{s",q/  
t^?8Di\  
while(top>0){ ,-  ]2s_  
int j=stack[top--]; V$ 38  
int i=stack[top--]; 1E$Z]5C9  
+Smv<^bW  
pivotIndex=(i+j)/2; VR?7{3  
pivot=data[pivotIndex]; ]wne2WXE  
&_4A6  
SortUtil.swap(data,pivotIndex,j); 4:r^6m%%  
?3SlvKI}H`  
file://partition !Go(8`>  
l=i-1; y NV$IN%  
r=j; `m<="No  
do{  %W"\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xHsH .f_{  
SortUtil.swap(data,l,r); Y@eHp-[  
} |+6Z+-.Hg  
while(l SortUtil.swap(data,l,r); 3JW9G04.  
SortUtil.swap(data,l,j); t{~"vD9Am  
} Q1$v~  
if((l-i)>THRESHOLD){ v{ C]\8  
stack[++top]=i; TG?;o/  
stack[++top]=l-1; 8g>jz 8  
} 0O-p(L=  
if((j-l)>THRESHOLD){ BCUw"R#  
stack[++top]=l+1; WY 2b  
stack[++top]=j; ?[!.TU?4N  
} q 4 Ye  
$L</{bXW  
} $#R.+B  
file://new InsertSort().sort(data); w41#? VC/  
insertSort(data); uzp !Y&C  
} p00\C  
/** {h9#JMIA  
* @param data PNc200`v4_  
*/ e}[$ =  
private void insertSort(int[] data) { DP; B*s4{U  
int temp; *qOo,e  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aF'Ik XG d  
} 8w2+t>?  
} X0vkdNgW  
} ?'T>/<(  
xmiF!R  
} !Z=`Wk5  
&OI=r vDmo  
归并排序: 1Za\T?V  
`n^jU92  
package org.rut.util.algorithm.support; ZlO@PlZ)  
k9^P#l@p  
import org.rut.util.algorithm.SortUtil; 2A`EFk7_X  
f[|xp?ef  
/** *EV]8  
* @author treeroot Nm,v E7M  
* @since 2006-2-2 %J|EDf ,M  
* @version 1.0 +!_^MBkk  
*/ Mm6 (Q  
public class MergeSort implements SortUtil.Sort{ a'T|p)N.;T  
3tr?-l[N\  
/* (non-Javadoc) 1Eg}qU,:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1]hMA\x  
*/ Q;aZpi-E"  
public void sort(int[] data) { PKjA@+  
int[] temp=new int[data.length]; %{HqF>=~  
mergeSort(data,temp,0,data.length-1); p^L6uM  
} cOUO_xp(  
Szg<;._J  
private void mergeSort(int[] data,int[] temp,int l,int r){ m7RWuI,  
int mid=(l+r)/2; Hfc^<q4a.  
if(l==r) return ; H<NYm#a"  
mergeSort(data,temp,l,mid); .IKK.G  
mergeSort(data,temp,mid+1,r); "V9!srIC  
for(int i=l;i<=r;i++){ `E|IMUB~  
temp=data; G %#us3x  
} I) Y$?"  
int i1=l; ZnJnjW PQ  
int i2=mid+1; W B!$qie\  
for(int cur=l;cur<=r;cur++){ VS}Vl  
if(i1==mid+1) 0 \h2&  
data[cur]=temp[i2++]; u*9C(je  
else if(i2>r) RuXK` y Sv  
data[cur]=temp[i1++]; Cog:6Gnw  
else if(temp[i1] data[cur]=temp[i1++]; -Z;:_"&9  
else 2XI%4  
data[cur]=temp[i2++]; |/<iydP  
} Uc6U!X  
} ED$gnFa3I  
AVcZ.+?  
} \4vFEJSh  
t 1&p> v  
改进后的归并排序: db4&?55Q  
' l!QGKz  
package org.rut.util.algorithm.support; yqBu7E$X  
*}v'y{;  
import org.rut.util.algorithm.SortUtil; _n_i*p '2  
Awr]@%I  
/** u#P7~9ZG-  
* @author treeroot v(t&8)Uu  
* @since 2006-2-2 t*<c+Ixu  
* @version 1.0 Qy$QOtrv  
*/ "Km`B1f`  
public class ImprovedMergeSort implements SortUtil.Sort { 1u` Z?S(  
@+ 2Zt%  
private static final int THRESHOLD = 10; u(~s$ENl  
D=OU61AA  
/* $`5DGy?RU  
* (non-Javadoc) A9R}74e4g  
* utTek5/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z g'[.wov  
*/ Zn^E   
public void sort(int[] data) { -5qO}^i$a  
int[] temp=new int[data.length]; `C()H@;  
mergeSort(data,temp,0,data.length-1); asJYGqdF  
} >Y,7>ahyt  
vx4& ;2  
private void mergeSort(int[] data, int[] temp, int l, int r) { 3dM6zOK  
int i, j, k; Kr#=u~~M  
int mid = (l + r) / 2; c49#aN R  
if (l == r) K)v(Z"  
return; ]MHQ "E?  
if ((mid - l) >= THRESHOLD) IX>|bA;  
mergeSort(data, temp, l, mid); q{@Wn]!k  
else :C&?(HJ&r  
insertSort(data, l, mid - l + 1); dqe_&C@*O  
if ((r - mid) > THRESHOLD) DTJ  
mergeSort(data, temp, mid + 1, r); Rsulp#['  
else jab]!eY  
insertSort(data, mid + 1, r - mid); P``hw=L  
>YW>=5_  
for (i = l; i <= mid; i++) { PU>;4l  
temp = data; 4a 5n*6G!  
} h}oQr0"c  
for (j = 1; j <= r - mid; j++) { \x+DEy'4;5  
temp[r - j + 1] = data[j + mid]; lt*k(JD  
} = MXF`k^}  
int a = temp[l]; M&K@><6k,k  
int b = temp[r]; mSzwx/3"  
for (i = l, j = r, k = l; k <= r; k++) { _5)#{ o<  
if (a < b) { ~ U1iB  
data[k] = temp[i++]; V.4j?\#%  
a = temp; =UV?Pi*M>  
} else { <|8 l;  
data[k] = temp[j--]; %pt $S~j  
b = temp[j]; GWhZ Mj  
} w(yU\ N  
} Ao\Vh\rQkq  
} =.%ZF]Oe+#  
sH]AB =_  
/** `~RV  
* @param data ? vlGr5#  
* @param l ~L1O\V i  
* @param i ZChY:I$<  
*/ !vB%Q$!x  
private void insertSort(int[] data, int start, int len) { .~8+s.y  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z>{KeX:  
} yI%> w4Z  
} <8bO1t^*  
} GKSy|z  
} qh'BrYu*  
K4yYNlY  
堆排序: 2%8Y-o?  
$SXxAS1  
package org.rut.util.algorithm.support; >(CoXSV5  
n96gDH*  
import org.rut.util.algorithm.SortUtil; )eEvyU  
OT[m g4&  
/** Z)A+ wM  
* @author treeroot L8zqLD i&  
* @since 2006-2-2 StL[\9~:  
* @version 1.0 <f6PULm  
*/ Ib\G{$r  
public class HeapSort implements SortUtil.Sort{ @e,Zmx  
xdM#>z`;  
/* (non-Javadoc) {t:ND  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bg h$P  
*/ \.a .'l  
public void sort(int[] data) { ~K96y$ DTE  
MaxHeap h=new MaxHeap(); LPn }QzH  
h.init(data); cQ41NX@I  
for(int i=0;i h.remove(); X-,y[ )  
System.arraycopy(h.queue,1,data,0,data.length); 5ecz'eA%  
} 2S6EDXc  
+-\9'Q  
private static class MaxHeap{ I0vn d7  
5#)<rK  
void init(int[] data){ ,rI |+  
this.queue=new int[data.length+1]; ebe@.ZVSi  
for(int i=0;i queue[++size]=data; b6Hk20+B;  
fixUp(size); .K1E1Z_  
} $jm<' 4  
} xg^^@o  
yn[ZN-H~  
private int size=0; @!/fvP  
~&lJT  
private int[] queue; /7@2Qc2  
(I ds<n"  
public int get() { jgKL88J*\  
return queue[1]; idS RWa  
} ]3,.g)U*m  
}!]x|zU.=  
public void remove() { YIQ]]q8R!L  
SortUtil.swap(queue,1,size--); xO-U]%oq  
fixDown(1); ;T{/;  
} So *Wk "  
file://fixdown yLO &(Mb  
private void fixDown(int k) { wv.Ul rpx.  
int j; , ."(Gp  
while ((j = k << 1) <= size) { Y0yO `W4  
if (j < size %26amp;%26amp; queue[j] j++; .S'fM]_#  
if (queue[k]>queue[j]) file://不用交换 )R)$T'  
break; u%1k  
SortUtil.swap(queue,j,k); $%%>n ^??  
k = j; N 3yB1_   
} Qy^z*s  
} #G  +  
private void fixUp(int k) { k?/vy9  
while (k > 1) { #O9*$eMw  
int j = k >> 1; h@,e`Z  
if (queue[j]>queue[k]) *Iwk47J ;a  
break; e9`uD|KAS|  
SortUtil.swap(queue,j,k); "-Q Rkif  
k = j; r d6F"W  
} Q P=[ Vw  
} 5\w=(c9A  
uH&,%k9GVK  
} Z0ncN])  
-RH4y 2  
} RCh$j&Tn  
j[/SXF\=  
SortUtil: @nx}6?p\,  
[CDXCV-z  
package org.rut.util.algorithm; CaYos;Pl  
hD$p;LF  
import org.rut.util.algorithm.support.BubbleSort; Z6R: rq  
import org.rut.util.algorithm.support.HeapSort; Z<N&UFw7QJ  
import org.rut.util.algorithm.support.ImprovedMergeSort; " _:iK]  
import org.rut.util.algorithm.support.ImprovedQuickSort; up &NCX  
import org.rut.util.algorithm.support.InsertSort; <E[HlL  
import org.rut.util.algorithm.support.MergeSort; (~G5t(+  
import org.rut.util.algorithm.support.QuickSort; :otY;n-  
import org.rut.util.algorithm.support.SelectionSort; :m* !?QGdL  
import org.rut.util.algorithm.support.ShellSort; MvZ+n  
&Mhv XHI  
/** hY.e[+  
* @author treeroot 1 ;\]D9i  
* @since 2006-2-2  :Hzz{'  
* @version 1.0 T/GgF&i3  
*/ nIyROhZ  
public class SortUtil { N)y^</Ya  
public final static int INSERT = 1; :F^$"~(,  
public final static int BUBBLE = 2; YN%=Oq  
public final static int SELECTION = 3; QiTR-M2C!  
public final static int SHELL = 4; s; B j7]  
public final static int QUICK = 5; R3B5-^s  
public final static int IMPROVED_QUICK = 6; qGpP,  
public final static int MERGE = 7; S,*{q(   
public final static int IMPROVED_MERGE = 8; nDHHYp  
public final static int HEAP = 9; 5)d,G9  
#Mj$o;SX  
public static void sort(int[] data) { >JKnGeF  
sort(data, IMPROVED_QUICK); JrCf,?L^  
} (s}Rj)V[^  
private static String[] name={ k9}Q7)@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {D_++^  
}; 'Q:i&dTg  
qri}=du&F  
private static Sort[] impl=new Sort[]{ HGO#e  
new InsertSort(), 2BoFyL*  
new BubbleSort(), 3]O`[P,*%  
new SelectionSort(), (3 IZ  
new ShellSort(), <|{L[  
new QuickSort(), e[x?6He,$  
new ImprovedQuickSort(), /=8O&1=D  
new MergeSort(), w^06z,  
new ImprovedMergeSort(), .S~@BI(|<  
new HeapSort() K0tV'Ml#"  
}; PD6MyW05%9  
o3Mf:;2cC  
public static String toString(int algorithm){ K :1g"  
return name[algorithm-1]; /xl4ohL$a  
} h&)fu{   
b;S6'7Jf9  
public static void sort(int[] data, int algorithm) { JB&G~7Q85  
impl[algorithm-1].sort(data); a?5WKO  
} v1 LKU  
3>RcWy;1i  
public static interface Sort { $Mdbt o~<  
public void sort(int[] data); "6?lQw e  
} %tT"`%(+  
yC0C`oC  
public static void swap(int[] data, int i, int j) { 1TKEm9j]u  
int temp = data; V?OuIg%=:  
data = data[j]; +"jl(5Q  
data[j] = temp; Z:K+I+:t  
} 4HM;K_G%{  
} cppL0myJ  
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