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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。 ;hR!j!3}  
插入排序: bep}|8,#u  
m&o}qzC'y  
package org.rut.util.algorithm.support; [^t"Hf  
+aRjJ/*  
import org.rut.util.algorithm.SortUtil; hH:7  
/**  !J!zi  
* @author treeroot vc o/h  
* @since 2006-2-2 I!lzOg4~  
* @version 1.0 ~L Gkc t  
*/ ElAJR4'{*i  
public class InsertSort implements SortUtil.Sort{ adtK$@Yeg  
B' 6^E#9  
/* (non-Javadoc) eU_|.2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R-]QU`c  
*/ a%f{mP$m  
public void sort(int[] data) { Nk=F.fp|/  
int temp; quk~z};R>\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^qqP):0y1V  
} Mp; t?C4  
} ], Wh]q  
} lGqwB,K$z4  
XPXC7_fV  
} {"8\~r&b  
W+PAlsOC  
冒泡排序: */xI#G,O+  
e3YZ-w^W~h  
package org.rut.util.algorithm.support; uHBX}WH  
t+Mr1e  
import org.rut.util.algorithm.SortUtil; XP5q4BM  
J]ivIQ  
/** |#R;pEn  
* @author treeroot DrbjqQL+.  
* @since 2006-2-2 'dM &~L SQ  
* @version 1.0 -yfyd$5j  
*/ D.)$\Caq  
public class BubbleSort implements SortUtil.Sort{ k6rX/ocu  
* JGm  
/* (non-Javadoc) b,5H|$nLu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #{7=  
*/ q]:+0~cz  
public void sort(int[] data) { n"Ec%n  
int temp; l)D18  
for(int i=0;i for(int j=data.length-1;j>i;j--){ [,Ts;Hy6Q  
if(data[j] SortUtil.swap(data,j,j-1); < 'op  
} ;&e5.K+.Z  
} VuFM jY  
} Vi`+2%4  
} gwQL9 UYx  
lJoMJS;S]}  
} 1YR;dn  
^ef:cS$;  
选择排序: ]7zDdI|  
&q1(v3cOO  
package org.rut.util.algorithm.support; C.@R#a'  
z;1tJ  
import org.rut.util.algorithm.SortUtil; $=iz&{9  
oTo'? E#  
/** #0`2wuo {  
* @author treeroot 6k"Wy3/  
* @since 2006-2-2 : Ey  
* @version 1.0 Nt67Ye3;  
*/ = sedkrM  
public class SelectionSort implements SortUtil.Sort { 4nkH0dJQ  
k='sI^lF  
/* D9e"E1f+"  
* (non-Javadoc) e%x$Cb:znn  
* l#%Y]1 *  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MdU_zY(c  
*/ tc@v9`^_  
public void sort(int[] data) { $;7?w-.  
int temp; aGNt?)8WPZ  
for (int i = 0; i < data.length; i++) { eB/3MUz1  
int lowIndex = i; VJD$nh #M5  
for (int j = data.length - 1; j > i; j--) { N::_JH? ^=  
if (data[j] < data[lowIndex]) { `y0ZFh1>X  
lowIndex = j; 00?^!';  
} *gHOH!K,S  
} &PD4+%!  
SortUtil.swap(data,i,lowIndex); ~FH''}3:3  
} X55Eemg/  
} `j[)iok  
*La*j3|:  
} dGQxGt1  
QpS0iUG  
Shell排序: Kr=DoQ."d8  
hnL"f[p@gC  
package org.rut.util.algorithm.support; s!Y>\3rMW  
e{Om W  
import org.rut.util.algorithm.SortUtil;  {"y{V  
QV+('  
/** )gvX eJ  
* @author treeroot rj$u_y3S*  
* @since 2006-2-2 B9iH+ ]W  
* @version 1.0 W>dS@;E  
*/ tb AN{pX  
public class ShellSort implements SortUtil.Sort{ _.J{U0N  
^w^cYM,  
/* (non-Javadoc) P\iw[m7O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /+2^xEIjE  
*/ .,l ?z  
public void sort(int[] data) { =Z2U  
for(int i=data.length/2;i>2;i/=2){ en!cu_]t  
for(int j=0;j insertSort(data,j,i); 6 )0$UW  
} WXNJc  
} IyOujdKa  
insertSort(data,0,1); ?Z( 6..&  
} -}2q-  
[sFD-2y  
/** ZNFn^iuQ  
* @param data eN>=x40  
* @param j ~yt+xWV  
* @param i BI;in;Ln  
*/ "6 dC  
private void insertSort(int[] data, int start, int inc) { rv;w`f  
int temp; / !jd%,G  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vBj{bnl  
} p(Y'fd}  
} ?OYu BZF  
} PAH; +  
8iK>bp  
} g[-'0d\1  
fbNVmjb$)  
快速排序: ],>Z' W  
$tj[ *  
package org.rut.util.algorithm.support; R2x(8k"LPU  
NJs )2  
import org.rut.util.algorithm.SortUtil; \M=" R-&b  
U;;vNzcn  
/** n0O- Bxhl  
* @author treeroot bY+Hf\A  
* @since 2006-2-2 }_3<Q\j  
* @version 1.0 JmWN/mx  
*/ lj@c"Yrk  
public class QuickSort implements SortUtil.Sort{ -78 t0-lM  
`P)atQ  
/* (non-Javadoc) B Gh%3"q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rxIfatp^  
*/ *7nlel  
public void sort(int[] data) { 3tS~/o+]  
quickSort(data,0,data.length-1); "1&C\}.7  
} #]:yCiA  
private void quickSort(int[] data,int i,int j){ TTmNPp4q  
int pivotIndex=(i+j)/2; `DC)U1  
file://swap G~8C7$0z  
SortUtil.swap(data,pivotIndex,j); ~( -B%Az  
rh${pHl  
int k=partition(data,i-1,j,data[j]); vov"60K  
SortUtil.swap(data,k,j); $eX; 2  
if((k-i)>1) quickSort(data,i,k-1); 4tCyd5u a8  
if((j-k)>1) quickSort(data,k+1,j); m-5Dbx!j  
zYYc#N/  
} E >KV1P  
/** 477jS6^e&  
* @param data tE9%;8;H  
* @param i wCkhE,#-_  
* @param j JDD(e_dw  
* @return dW,$yH_  
*/ j*q]-$2E  
private int partition(int[] data, int l, int r,int pivot) { p/cVQ  
do{ op"RrZAZBT  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6@ET3v  
SortUtil.swap(data,l,r); v#(wc +[  
} N#6&t8;kTC  
while(l SortUtil.swap(data,l,r); (lwkg8WC  
return l; qdL;Ii<Y0  
} }Wn6r_:  
?#rDoYt/Sx  
} $wdIOfaH  
Q^DKKp  
改进后的快速排序: c3`X19'%fM  
f<!eJO:<'  
package org.rut.util.algorithm.support; C*/d%eHD  
 z4&|~-m,  
import org.rut.util.algorithm.SortUtil; (JL{X`gs#  
;5q=/  
/** PC7U&*x@  
* @author treeroot * "~^k^_b}  
* @since 2006-2-2 "So+  
* @version 1.0 `Q, moz  
*/ Qi w "x,  
public class ImprovedQuickSort implements SortUtil.Sort { ds4ERe /  
iU~oPp[e  
private static int MAX_STACK_SIZE=4096; D5]T.8kX(7  
private static int THRESHOLD=10; O6YYOmt3  
/* (non-Javadoc) .?<,J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qI) Yzc/  
*/ T,!?+#  
public void sort(int[] data) { JyjS#BWi  
int[] stack=new int[MAX_STACK_SIZE]; [q?{e1  
-SlLX\>p  
int top=-1; 0V}%'Ec<e  
int pivot; L/F!Y%=;[  
int pivotIndex,l,r; @2L+"=u#  
m.&z:`x[  
stack[++top]=0; 'eLO#1Ipf  
stack[++top]=data.length-1; U9SByqa1  
b_|`jHes  
while(top>0){ >(|T]u](q  
int j=stack[top--]; WDP$w( M  
int i=stack[top--]; t1 OnA#]/_  
GW]Ygf1t  
pivotIndex=(i+j)/2; K`M8[ %S  
pivot=data[pivotIndex]; @@# ^G8+l  
=BMON{K  
SortUtil.swap(data,pivotIndex,j); ]pzf{8%  
f]qP xRw  
file://partition Zyu4!  
l=i-1; Eii)zo8Xd  
r=j; KWLI7fTgj$  
do{ 7Fh%jRHZ`  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G9 ;X=c  
SortUtil.swap(data,l,r); 2LiJ IO8N  
} NJI-8qTGI  
while(l SortUtil.swap(data,l,r); #B88w9 b`D  
SortUtil.swap(data,l,j); 'hf#Q9W5  
<KoiZ{V   
if((l-i)>THRESHOLD){ MQG(n+c  
stack[++top]=i; -L NJ*?b  
stack[++top]=l-1; ?.LS _e_0  
} V) a<)  
if((j-l)>THRESHOLD){ :tl* >d~  
stack[++top]=l+1; P bj&l0C  
stack[++top]=j; D2#3fM6  
} YiTiJ9jf  
\3"4;fM!i  
} ;*BG{rkr  
file://new InsertSort().sort(data); 5hr$tkk L  
insertSort(data); MXh0a@*]  
} K63OjR >H  
/** &u&/t?  
* @param data @a'Rn  
*/ P6!c-\  
private void insertSort(int[] data) { wI'T J e,  
int temp; Kyq/'9`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .D(H@3qA@  
} t3}>5cAxy  
} ",k"c}3G  
} yTm/P!1S  
az*c0Z<pl  
} D{x'k2=  
%c<e`P;  
归并排序: ^":UkPFCx:  
D|9xD  
package org.rut.util.algorithm.support; )[C]1N=tK  
b(Zh$86  
import org.rut.util.algorithm.SortUtil; fa//~$#"{L  
mXtsP1  
/** l ~b# Y&  
* @author treeroot ?NOc]'<(G  
* @since 2006-2-2 \}P3mS"e3  
* @version 1.0 z\Hg@J&#  
*/ X4_1kY;  
public class MergeSort implements SortUtil.Sort{ tg_xk+x  
A(V,qw8  
/* (non-Javadoc) n`8BE9h^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J$F 1sy  
*/ 2Nrb}LH  
public void sort(int[] data) { /H/@7>  
int[] temp=new int[data.length]; -GJ~xcf0  
mergeSort(data,temp,0,data.length-1); ~2PD%+e7]  
} 0/5 a3-3{  
++w7jVi9  
private void mergeSort(int[] data,int[] temp,int l,int r){ A=JPmsj.  
int mid=(l+r)/2; {$-lXw4  
if(l==r) return ; (HbA?Aja  
mergeSort(data,temp,l,mid); D_]4]&QYT  
mergeSort(data,temp,mid+1,r); -N $4\yp  
for(int i=l;i<=r;i++){ :[xFp}w{  
temp=data; <'N"GLJ  
} }$i Kz*nx|  
int i1=l; ? l/VCEZP  
int i2=mid+1; lHerEv<ja  
for(int cur=l;cur<=r;cur++){ $ @g\wz  
if(i1==mid+1) He vZ}.  
data[cur]=temp[i2++]; a> qB k})  
else if(i2>r) (yA`h@@WS  
data[cur]=temp[i1++]; v7gs $'Q  
else if(temp[i1] data[cur]=temp[i1++]; o9\J vJk  
else 5,  "  
data[cur]=temp[i2++]; )-VpDW!%_  
} 2T 3tKX  
} pse$S=  
0Lb:N]5m8  
} opsjei@  
xl2;DFiYt  
改进后的归并排序: %])U(  
'tvX.aX2  
package org.rut.util.algorithm.support; cQ}3? v  
1i3;P/  
import org.rut.util.algorithm.SortUtil; v+d} _rCT  
7" Qj(N  
/** 41G}d+  
* @author treeroot K93L-K^J  
* @since 2006-2-2 %4'<0  
* @version 1.0 eFKF9m  
*/ yUnNf 2i  
public class ImprovedMergeSort implements SortUtil.Sort { H j [!F%  
_Ns/#Xe/  
private static final int THRESHOLD = 10; F3nYMf  
j/ [V<  
/* SG \6qE~  
* (non-Javadoc) .ni<'  
* =EFCd=i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v}\4/u  
*/ 4}4cA\B:n  
public void sort(int[] data) { tE'^O< K  
int[] temp=new int[data.length]; DpQ\q;  
mergeSort(data,temp,0,data.length-1); @n,V2`"  
} Br4[hUV/  
{,aX|*1Ku~  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~(*2 :9*0  
int i, j, k; \MqOHM.[  
int mid = (l + r) / 2; Op()`x m  
if (l == r) ?}g^/g !  
return; q7z`oK5  
if ((mid - l) >= THRESHOLD) 1 A%0y)]  
mergeSort(data, temp, l, mid); boS=  
else A |u-VXQ  
insertSort(data, l, mid - l + 1); H46N!{<;@  
if ((r - mid) > THRESHOLD) 6 &Lr/J76  
mergeSort(data, temp, mid + 1, r); Ef @  
else r)S:-wP  
insertSort(data, mid + 1, r - mid); 0:I[;Q t  
sGFvSW  
for (i = l; i <= mid; i++) { H^ 'As;R  
temp = data; n)|{tb^  
} V82HO{ D  
for (j = 1; j <= r - mid; j++) { S5o,\wT  
temp[r - j + 1] = data[j + mid]; eWWqK9B.-  
} x" lcE@(  
int a = temp[l]; qP{Fwn  
int b = temp[r]; 7+9o<j@@o  
for (i = l, j = r, k = l; k <= r; k++) { HK NT. a  
if (a < b) { gFpub_  
data[k] = temp[i++]; "?%2`*\  
a = temp; @yM$Et5  
} else { @U+#@6  
data[k] = temp[j--]; /|0xOiib  
b = temp[j]; Z_U4Yy'NNw  
}  LXoZ.3S  
} mq}V @H5  
} n g%~mt  
E/V_gci  
/** .8wf {y  
* @param data ZJe^MnE (G  
* @param l `=V p 0tPI  
* @param i EDT9O  
*/ z~"Q_gme  
private void insertSort(int[] data, int start, int len) { 5G2G<[p5oQ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); j*\oK@  
} ?lE&o w  
} 6l'J!4*qY  
} 3{)!T;Wd  
} fUMjLA|*I<  
iGPrWe@.  
堆排序: OxQ5P;O  
&V| kv"Wwj  
package org.rut.util.algorithm.support; .Hnhd/ c  
cgnMoBIc  
import org.rut.util.algorithm.SortUtil; LLc^SP j  
3xk_ZK82  
/** 4VF4 8  
* @author treeroot J}NMF#w/;  
* @since 2006-2-2 e"y-A&|  
* @version 1.0 r]@T9\9  
*/ !(Ymc_s  
public class HeapSort implements SortUtil.Sort{ |LW5dtQ  
[tT_ z<e`  
/* (non-Javadoc) yh2)Pc[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S B~opN  
*/ -Uan.#~S  
public void sort(int[] data) {  !2kM  
MaxHeap h=new MaxHeap(); %QG3~b% h  
h.init(data); uK] -m  
for(int i=0;i h.remove(); k%3)J"|/  
System.arraycopy(h.queue,1,data,0,data.length); IL go:xQ  
} #{*5rKiL  
5,-g^o7  
private static class MaxHeap{ )DmydyQ'  
}uNj#Uf  
void init(int[] data){ mqHcD8X  
this.queue=new int[data.length+1]; wPEK5=\4Ob  
for(int i=0;i queue[++size]=data; mv>0j<C91  
fixUp(size); mPU}]1*p  
} @F] w]d  
} IsmZEVuC  
hraR:l D  
private int size=0; eR4ib-nS  
:zX^H9'E<(  
private int[] queue; A!,c@Kv 3  
zMRa <G7  
public int get() { N5{v;~Cm}V  
return queue[1]; 2Z(t/Zp>  
} Td ade+  
veuX />!  
public void remove() { Ni8%K6]z  
SortUtil.swap(queue,1,size--); (/At+MF3E  
fixDown(1); ^vxx]Hji  
} BTD_j&+(  
file://fixdown EnGh&]  
private void fixDown(int k) { &\I<j\F2/  
int j; m.rV1#AI  
while ((j = k << 1) <= size) { i}:hmy'  
if (j < size %26amp;%26amp; queue[j] j++; [(2^oTSRaq  
if (queue[k]>queue[j]) file://不用交换 fP:]s@$  
break; mKjTJzS  
SortUtil.swap(queue,j,k); O&MH5^I  
k = j; ;O1jf4y  
} LofpBO6^  
} b}fC' h  
private void fixUp(int k) { BYu(a  
while (k > 1) { /lbj!\~  
int j = k >> 1; W/\pqH  
if (queue[j]>queue[k]) )H@<A93  
break; <jh7G  
SortUtil.swap(queue,j,k); -.r"|\1X  
k = j; TFG? EO  
} :8(jhs  
} ZR -RzT1  
u(FOSmNkN  
} &a4FGzR#  
#q K.AZi  
} J90:c@O"w  
cpl Ny?UIC  
SortUtil: Ux1j+}y  
T9}~]zW7P  
package org.rut.util.algorithm; qSlo)aP  
[0qswsV  
import org.rut.util.algorithm.support.BubbleSort; K>vl o/#!  
import org.rut.util.algorithm.support.HeapSort; L*dGo,oN  
import org.rut.util.algorithm.support.ImprovedMergeSort; a_bZT4  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7TEpjSuF  
import org.rut.util.algorithm.support.InsertSort; @`)>- k  
import org.rut.util.algorithm.support.MergeSort; %f'=9pit  
import org.rut.util.algorithm.support.QuickSort; Xq )7Im}?  
import org.rut.util.algorithm.support.SelectionSort; jI'?7@32`  
import org.rut.util.algorithm.support.ShellSort; vmEn$`&2t  
H\V?QDn  
/** ? A;RTM  
* @author treeroot gaQ E'qp>  
* @since 2006-2-2 o2B|r`R  
* @version 1.0 C+P.7]?&  
*/ rHjDf[5+  
public class SortUtil { C[<{>fl)  
public final static int INSERT = 1; 'zav%}b]L  
public final static int BUBBLE = 2; p+<qI~  
public final static int SELECTION = 3; p2Gd6v.t  
public final static int SHELL = 4; 1) K<x  
public final static int QUICK = 5; x${C[gxq9F  
public final static int IMPROVED_QUICK = 6; L-)ZjXzk  
public final static int MERGE = 7; jJw  
public final static int IMPROVED_MERGE = 8; :-#7j} R&  
public final static int HEAP = 9; T59FRX  
eI:x4K,#  
public static void sort(int[] data) { ]KEE+o  
sort(data, IMPROVED_QUICK); Ky7.&6\n  
} Q|P M6ta  
private static String[] name={ mi$C%~]5m  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  H{yBD xw  
}; VRgckh m  
n|?sNM<J3  
private static Sort[] impl=new Sort[]{ OM^`P  
new InsertSort(), =$+0p3[r  
new BubbleSort(), wl%ysM| x  
new SelectionSort(), m' S{P:TK  
new ShellSort(), % >a /m.$  
new QuickSort(), y`8U0TE3R  
new ImprovedQuickSort(), Ym"^Ds}  
new MergeSort(), I L7kpH+y  
new ImprovedMergeSort(), Du +_dr^4  
new HeapSort() QHja4/  
}; WF*j^ %5  
?$ov9U_  
public static String toString(int algorithm){ Dq%} ({+  
return name[algorithm-1]; @`+\v mfD  
} ^7ID |uMr  
^!C  
public static void sort(int[] data, int algorithm) { x^c,cV+*  
impl[algorithm-1].sort(data); c%O97J.5b  
} aCH;l~+U  
c$)>$&([  
public static interface Sort { !( +M  
public void sort(int[] data); ]mi\Y"RO  
} cAGM|%  
^`M%g2x  
public static void swap(int[] data, int i, int j) { 6HJsIeQ  
int temp = data; ;nL7Hizo,  
data = data[j]; a#+$.e5  
data[j] = temp; |A,.mOT  
} '5*&  
} 8@+<W%+th  
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