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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。 `09[25?  
插入排序: U~zy;M T  
fo9V&NE  
package org.rut.util.algorithm.support; :de4Fje/4y  
{pRa%DF  
import org.rut.util.algorithm.SortUtil; #H8QX5b)  
/** ^}z:FI   
* @author treeroot S@,x^/vT  
* @since 2006-2-2 O15~\8#'  
* @version 1.0 8-O: e  
*/ v,3 }YDu  
public class InsertSort implements SortUtil.Sort{ sv\=/F@n  
q.ppYXJUXi  
/* (non-Javadoc) K_X(j$2Xc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p+2%LYR u  
*/ PDh!B _+  
public void sort(int[] data) { P^BSl7cT  
int temp; tKi ^0vE8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7Z81+I|&8  
} Zc9S[ivq  
} *unJd"<*&@  
} ,;=is.h9  
ar`}+2Qh0  
} w-wJhc|  
M!PK3  
冒泡排序: t..@69  
 n4AQ  
package org.rut.util.algorithm.support; .m%ygoO  
{~=gKZ:-@  
import org.rut.util.algorithm.SortUtil; BQ!_i*14+  
v)!^%D  
/** W%#LHluP  
* @author treeroot UzkX;UA  
* @since 2006-2-2 \mwxV!!b$  
* @version 1.0 E{B40E~4  
*/ 0t00X/  
public class BubbleSort implements SortUtil.Sort{ t(- 5l  
8qq'q"g  
/* (non-Javadoc) P76QHBbl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {/qq*0wa  
*/ {y>Kcfc/?E  
public void sort(int[] data) { be&,V_F  
int temp; $Mqw)X&q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ x#tP)5n?s*  
if(data[j] SortUtil.swap(data,j,j-1); -$j|&l  
} 0^ $6U  
} 8.D9OpU  
} -;[,`g(f  
} =q*j". <  
VQ`a-DL  
}  f(*^zga,  
0$q)uip  
选择排序: P:HmT   
k*= #XbX  
package org.rut.util.algorithm.support; -$kA WP8P4  
oyo V1jO  
import org.rut.util.algorithm.SortUtil; {rZ )!  
8 gzf$Oc  
/** U>kL|X3 V  
* @author treeroot xy1R_*.F^T  
* @since 2006-2-2 [>U =P`  
* @version 1.0 ,hXhcfFl  
*/ y8=H+Y  
public class SelectionSort implements SortUtil.Sort { <Yy|.=6 D  
SpX6PwM  
/* f^kH[C  
* (non-Javadoc) A"~4|`W  
* "iTi+UZxe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <ULydBom  
*/ ~5b^Gvb?  
public void sort(int[] data) { \L{V|}"X  
int temp; g\lEdxm6Sj  
for (int i = 0; i < data.length; i++) { @a}jnl(2  
int lowIndex = i; V'&`JZK6  
for (int j = data.length - 1; j > i; j--) { E(G&mfhb  
if (data[j] < data[lowIndex]) { ptEChoZ6  
lowIndex = j; /#I~iYPe  
} w [7vxQ!-  
} tEHgQto  
SortUtil.swap(data,i,lowIndex); -yP_S~ \n  
} 'PVxc %[  
} &a bR}J[  
l's*HExR  
} <m X EX`?  
&pZn cm  
Shell排序: #J09Eka;J  
.7|Iausv  
package org.rut.util.algorithm.support; X(*MHBd  
!omf>CW;ud  
import org.rut.util.algorithm.SortUtil; 8Xjp5  
(N :vDq'  
/** 3r-oZ8/n  
* @author treeroot #9ZHt5T=$  
* @since 2006-2-2 @Xg5 E  
* @version 1.0 5VR=D\j  
*/ G=l-S\0@  
public class ShellSort implements SortUtil.Sort{ 8*Ke;X~N  
EwKFT FL  
/* (non-Javadoc) '| rhm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HS >B\Ip"  
*/ SM8Wg>  
public void sort(int[] data) { ^^Te  
for(int i=data.length/2;i>2;i/=2){ ft><Ql3  
for(int j=0;j insertSort(data,j,i); rK} =<R  
} WCUaXvw  
} {7Q)2NC  
insertSort(data,0,1); r: -,qy  
} ;G|#i? JJ  
K|sk]2.  
/** YgL{*XYAt  
* @param data "cDMFu  
* @param j &ku.Q3xGs  
* @param i PJ3M,2H1b.  
*/ !M@jW[s  
private void insertSort(int[] data, int start, int inc) { (utk)  
int temp; s@D/.X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *r(Qy0(  
} 1'4?}0Dok  
} 4U>g0  
} L~|_CRw  
92XG|CWX  
} JpE7"Z"~MS  
wU(!fw\  
快速排序: GW,RE\Q:  
]@{l<ExP  
package org.rut.util.algorithm.support; I_\?wSNGM  
)0?u_Z]w9  
import org.rut.util.algorithm.SortUtil; _|VF^\i  
g1v=a  
/** i62GZe E  
* @author treeroot #Oi{7~  
* @since 2006-2-2 8/T[dn  
* @version 1.0 |'qvq/#^  
*/ R4vf  
public class QuickSort implements SortUtil.Sort{ TpcJ1*t  
ftxy]N LF  
/* (non-Javadoc) g&I|@$\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j: E3c\a  
*/ |.;*,bb|3  
public void sort(int[] data) { L<k(stx~  
quickSort(data,0,data.length-1); s"5wnp6pW  
} BU.O[?@64  
private void quickSort(int[] data,int i,int j){ wC?>,LOl  
int pivotIndex=(i+j)/2; DT3"uJTt  
file://swap u0F{.fe  
SortUtil.swap(data,pivotIndex,j); m:6*4_!  
_N:GZLG  
int k=partition(data,i-1,j,data[j]); #'dNSez5  
SortUtil.swap(data,k,j); apjoIO-<  
if((k-i)>1) quickSort(data,i,k-1); "0LSy x  
if((j-k)>1) quickSort(data,k+1,j); aC94g7)`  
qSt\ 6~  
} xnxNc5$oE  
/** (_]D\g~  
* @param data *alifdp  
* @param i OlP1Zd/l  
* @param j dU-nE5  
* @return {r%T_BfY  
*/ .uSVZqJ7  
private int partition(int[] data, int l, int r,int pivot) { f2u4*X E\  
do{ liMw(F2  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); P9W?sPnC5  
SortUtil.swap(data,l,r); k}C4:?AT  
} Z7>Nd$E{  
while(l SortUtil.swap(data,l,r); Pkv+^[(4  
return l; 6O_l;A[=1  
} '61>.u:2  
*7w!~mn[m  
} U/-k'6=M  
$]rC-K:Z  
改进后的快速排序: DMOP*;Uk  
\-SC-c  
package org.rut.util.algorithm.support; GI@;76Qf  
!%[fi[p  
import org.rut.util.algorithm.SortUtil; J9MAnYd)i  
^B1$|C D,  
/** }0?XF/e(R  
* @author treeroot ^7a@?|,q8  
* @since 2006-2-2 qeb}~FL"o  
* @version 1.0 N>CNgUyP  
*/ A/{!w"G  
public class ImprovedQuickSort implements SortUtil.Sort { virt[5w  
BwrX.!M  
private static int MAX_STACK_SIZE=4096; o/ 7[ G  
private static int THRESHOLD=10; zI\+]U'  
/* (non-Javadoc) B*t1Y<>x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xz, o Mlw  
*/ %w?C)$Kn\  
public void sort(int[] data) { j^WYM r,  
int[] stack=new int[MAX_STACK_SIZE]; hxMV?\MYj  
[jksOC)@4  
int top=-1; *(qj!U43  
int pivot; y` {|D*  
int pivotIndex,l,r; _90<*{bt.  
4H NaE{O4  
stack[++top]=0; D)Ep!`Q   
stack[++top]=data.length-1; %~} ,N  
!8D>Bczq)  
while(top>0){ ?z2!?  
int j=stack[top--]; R1/c@HQw?  
int i=stack[top--]; R:3=!zav  
&H P g>  
pivotIndex=(i+j)/2; qWx{eRp d  
pivot=data[pivotIndex]; ! ,{zDMA  
d!4TwpIgx  
SortUtil.swap(data,pivotIndex,j); dPbn[*:  
b(CO7/e>  
file://partition !v(^wqna\  
l=i-1; \<\H1;=.@'  
r=j; 2r ;h">  
do{ \.}ZvM$  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %-$BtR2@o  
SortUtil.swap(data,l,r); ^*.+4iHx  
} _/'VD!(MV  
while(l SortUtil.swap(data,l,r); cy)-Rfg  
SortUtil.swap(data,l,j); 5Zd oem  
G.^)5!By  
if((l-i)>THRESHOLD){ e!o\AB%d  
stack[++top]=i; 5gII|8>rQ  
stack[++top]=l-1; ) <{u oH  
} Dy>6L79G  
if((j-l)>THRESHOLD){ a DXaQ  
stack[++top]=l+1; TUz4-Pd  
stack[++top]=j; /]_|uN)Q  
} %l14K_  
!h|,wq]k  
} c9o]w8p/  
file://new InsertSort().sort(data); #/jug[wf*!  
insertSort(data); idGn{f((f  
} _x1W\#  
/** TnKv)%VF  
* @param data [f! { -T  
*/ 3;VH'hh_  
private void insertSort(int[] data) { #ACT&J  
int temp; OzD\* ,{7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x;$ESPPg  
} (QL:7  
} T/2k2r4PD  
} @/ |g|4  
HfgTc h  
} hczDu8  
pgiZA?r*<  
归并排序: L+p}%!g  
0ju-l= w  
package org.rut.util.algorithm.support; m;\nMdn  
s]O Z+^Z  
import org.rut.util.algorithm.SortUtil; mXyN{`q=  
[DDe}D3C  
/** }$ySZa9  
* @author treeroot A&p@iE*/  
* @since 2006-2-2 `B4Ilh"d  
* @version 1.0 wpt$bqs|1  
*/ az:}RE3o  
public class MergeSort implements SortUtil.Sort{ K-)!d$$   
wdfbl_`T  
/* (non-Javadoc) cu foP&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LH)1IGAx2y  
*/ j5" L  
public void sort(int[] data) { s>I]_W)Pt  
int[] temp=new int[data.length]; v%AepK&  
mergeSort(data,temp,0,data.length-1); E;{CoL  
} %K')_NS@  
/g!ZU2&l  
private void mergeSort(int[] data,int[] temp,int l,int r){ m BFNg3_  
int mid=(l+r)/2; .\T!oSb4[  
if(l==r) return ; BYMdX J  
mergeSort(data,temp,l,mid); 9aLd!P uTN  
mergeSort(data,temp,mid+1,r); `|>]P"9yp  
for(int i=l;i<=r;i++){  %G\nl  
temp=data; %(p9AE  
} KJ32L  
int i1=l; R&;x_4dr^  
int i2=mid+1; 97\K] Tr  
for(int cur=l;cur<=r;cur++){ PN?;\k)"  
if(i1==mid+1) }xt^}:D  
data[cur]=temp[i2++]; & [@)Er=  
else if(i2>r) \V!{z;.fA  
data[cur]=temp[i1++]; ^pd7nr~Y  
else if(temp[i1] data[cur]=temp[i1++]; i 0/QfB%O  
else ``k[CgV  
data[cur]=temp[i2++]; XP o#qT8n  
} @(35I  
} 035jU'  
Q"~%T@e  
} \ui'~n_t]  
#J3o~,t<  
改进后的归并排序: p*42 @1,  
XZ]ji9'  
package org.rut.util.algorithm.support; 0+op|bdj  
Ul /m]b6-  
import org.rut.util.algorithm.SortUtil; /huh}&NNu  
n0co* ]X+k  
/** e,p*R?Y{[  
* @author treeroot 5o 5DG  
* @since 2006-2-2 R|(X_A  
* @version 1.0 0j4n1 1#  
*/ :{)uD ;  
public class ImprovedMergeSort implements SortUtil.Sort { S-o )d  
ejyx[CF  
private static final int THRESHOLD = 10; -hW>1s<  
R,78}7B  
/* )#i"hnYpQ  
* (non-Javadoc) (_ :82@c  
* , ~38IIS>_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #z&R9$  
*/ $t^Td<  
public void sort(int[] data) { R[l`# I  
int[] temp=new int[data.length]; ~!mY0odH  
mergeSort(data,temp,0,data.length-1); ibZ[U p?  
} KzV|::S^  
P.q7rk<  
private void mergeSort(int[] data, int[] temp, int l, int r) { &l ]F&-  
int i, j, k; Ew{*)r)m  
int mid = (l + r) / 2; dl8f]y#Q  
if (l == r) $mKExW  
return; HLqN=vE6  
if ((mid - l) >= THRESHOLD) k"gm;,`  
mergeSort(data, temp, l, mid); 7J5jf231  
else C4ktCN  
insertSort(data, l, mid - l + 1); ob/<;SrU<  
if ((r - mid) > THRESHOLD) tzd !r7  
mergeSort(data, temp, mid + 1, r); [Q8Wy/o Q  
else Hpz1Iy @  
insertSort(data, mid + 1, r - mid); zL}`7*d:v  
oXh t$Q  
for (i = l; i <= mid; i++) { Nb3O> &J  
temp = data; Q~ Ad{yC  
} %hBwc#^  
for (j = 1; j <= r - mid; j++) { e<=Nd,v4;  
temp[r - j + 1] = data[j + mid]; @8m%*pBg  
} zQ,M795@EA  
int a = temp[l]; XX90 Is  
int b = temp[r]; "2-D[rYZ  
for (i = l, j = r, k = l; k <= r; k++) { PE6,9i0ee  
if (a < b) { ! jAp V  
data[k] = temp[i++]; 1>\V>g9  
a = temp; JBHPI@Qt%  
} else { $Lbamg->E  
data[k] = temp[j--]; O>vCi&  
b = temp[j]; ;AVIt!(L~V  
} A:y^9+Da  
} ztHx) !  
} ws QuJrG  
l?_Fy_fBt  
/** 2 #yDVN$  
* @param data 9 5j`^M)Q  
* @param l ADOA&r[  
* @param i <3j`Z1J  
*/ B>cT <B  
private void insertSort(int[] data, int start, int len) { ;<T,W[3J  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3:#6/@wQ  
} +3XaAk  
} e, 2/3jO  
} 2/A*\  
} 0uM&F[.x@g  
n,s 7!z/  
堆排序: :|ah u  
qgfP6W$  
package org.rut.util.algorithm.support; `Xeiz'~f8  
H0])>1sWB  
import org.rut.util.algorithm.SortUtil; /+`%u&<  
,UVu.RjXN  
/** aqK+ u.H  
* @author treeroot [742s]j  
* @since 2006-2-2 fdwP@6eh  
* @version 1.0 B1U!*yzG6  
*/ m`$Q/SyvG  
public class HeapSort implements SortUtil.Sort{ `J03t\  
\k"CtzoX  
/* (non-Javadoc) !kb:g]X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .:Sk=r4u\  
*/ 5#X R1#`  
public void sort(int[] data) { FZ]+(Q"]:  
MaxHeap h=new MaxHeap(); [S~Bt78d%r  
h.init(data); #+U1QOsz  
for(int i=0;i h.remove(); gE^pOn  
System.arraycopy(h.queue,1,data,0,data.length); }><[6Uz%  
} (.Ak*  
/ bH2Z  
private static class MaxHeap{ v)gMNzt  
0&Ftx%6%  
void init(int[] data){ T"X]@9g^-  
this.queue=new int[data.length+1];  !j%  
for(int i=0;i queue[++size]=data; ?ILjt?X8  
fixUp(size); a 8Xwz@ M  
} #QcRN?s  
} @+p(%  
/)K;XtcN  
private int size=0;  qbS6#7D  
$YY{|8@kjv  
private int[] queue; 0QfDgDX  
Jn| i!  
public int get() {  #$2/<  
return queue[1]; }#4Ek8nFR  
} J#i7'9g  
]e"!ZR?XJ  
public void remove() { 5=#d#dDc  
SortUtil.swap(queue,1,size--); oUN\tOiS+  
fixDown(1); P3 =#<Q.  
} >35w"a7S  
file://fixdown , u%V%  
private void fixDown(int k) { 8c9<kGm$E  
int j; -+Yark  
while ((j = k << 1) <= size) { >D~8iuy]8.  
if (j < size %26amp;%26amp; queue[j] j++; U  yV5A  
if (queue[k]>queue[j]) file://不用交换 f$-n %7  
break; tH *|  
SortUtil.swap(queue,j,k); HOPy&Fp  
k = j; LJ@r+|>  
} f>ktv76  
} >C6S2ISSz  
private void fixUp(int k) { G![4K#~NM  
while (k > 1) { uG6.(A1LM  
int j = k >> 1; [v*q%Mi_  
if (queue[j]>queue[k]) 9"gu>  
break; w4TQ4 Y  
SortUtil.swap(queue,j,k); [' pO=ho  
k = j; m&xVlS  
} ;sAGTq  
} &<uLr *+*  
~ @xPoD&  
} 4\v &8">LL  
`W~    
} x`@`y7(  
"qR, V9\  
SortUtil: \ ya@9OA  
y1PyH  
package org.rut.util.algorithm; lA/-fUA  
GCO: !,1  
import org.rut.util.algorithm.support.BubbleSort; :0 n+RL*5  
import org.rut.util.algorithm.support.HeapSort; gVzIEE25  
import org.rut.util.algorithm.support.ImprovedMergeSort; K#X/j'$^  
import org.rut.util.algorithm.support.ImprovedQuickSort; "uIaKb  
import org.rut.util.algorithm.support.InsertSort; 1kL8EPT%o  
import org.rut.util.algorithm.support.MergeSort; {xov8 M  
import org.rut.util.algorithm.support.QuickSort; OM\1TD/-  
import org.rut.util.algorithm.support.SelectionSort; L{8_6s(:  
import org.rut.util.algorithm.support.ShellSort; <anKw|  
0!lWxS0#=  
/** ZM v\j|{8  
* @author treeroot Rb:<?&7ZzN  
* @since 2006-2-2 zN[& iKf  
* @version 1.0 z rSPa\M  
*/ EUcD[Rv  
public class SortUtil { kV?fie<\)  
public final static int INSERT = 1; [*zg? ur  
public final static int BUBBLE = 2; }a~hd*-#  
public final static int SELECTION = 3; 2 Kjd!~Z$  
public final static int SHELL = 4; ycc G>%>r  
public final static int QUICK = 5; =%IyR  
public final static int IMPROVED_QUICK = 6; \-;f<%+  
public final static int MERGE = 7; J({D~  
public final static int IMPROVED_MERGE = 8; GK'p$`oJm  
public final static int HEAP = 9; -2J37   
OmBz'sp:  
public static void sort(int[] data) { ~,1Sw7 rE  
sort(data, IMPROVED_QUICK); U6@c)_* <  
} ;]=w6'dP!  
private static String[] name={ jUA~}DVD  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" MU a[}?  
}; }p2iF2g9`  
KU` *LB:  
private static Sort[] impl=new Sort[]{ }5oI` 9VT  
new InsertSort(), 4{zy)GE|W  
new BubbleSort(), >rEZ$h  
new SelectionSort(), 4y7_P0}:B  
new ShellSort(), # lvt4a"P"  
new QuickSort(), Z@+nkTJ9&t  
new ImprovedQuickSort(), 65~E<)UJ  
new MergeSort(), N?vb^?  
new ImprovedMergeSort(), ,k4pW&A  
new HeapSort() g_syGQ\  
}; BK%B[f*[OA  
\/3(>g?4  
public static String toString(int algorithm){ BM /FOY;  
return name[algorithm-1]; pK3A/ry<  
} aHW34e@ebL  
Ju47}t%HB  
public static void sort(int[] data, int algorithm) { 63u%=-T%a  
impl[algorithm-1].sort(data); |@JTSz*Or  
} -GPBX?  
4DCh+|r  
public static interface Sort { gp`@dn';  
public void sort(int[] data); ftPps -  
} ^ l]!'"  
mv8H:T  
public static void swap(int[] data, int i, int j) { SQcic]Ep  
int temp = data; L4/ns@e  
data = data[j]; F:ycV~bE  
data[j] = temp; =figat  
} :Pdh##k  
} z U[pn)pe  
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