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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。 5~5d%C^3k  
插入排序: =TE6R 0b  
/n"Ib )M  
package org.rut.util.algorithm.support; b<u   
VK5|w:  
import org.rut.util.algorithm.SortUtil; 9|jk=`4UK  
/** Z ^zUb  
* @author treeroot Lp`q[Z*  
* @since 2006-2-2 hB]4Tn5H  
* @version 1.0 %ZDo;l+<F6  
*/ F]:@?}8R  
public class InsertSort implements SortUtil.Sort{ Ml@,xJ/aia  
{=pRU_-^  
/* (non-Javadoc) _e E(P1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o4^rE<vJ  
*/ %3M1zZY  
public void sort(int[] data) { H.3+5 po  
int temp; ""|vhgP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8vjaQ5  
} !yI , ~`Z  
} z<YOA  
} 60ccQ7=  
0p YO-@E  
} 2m7Z:b  
|gxT-ZM  
冒泡排序: Yw&{.<sL  
.KSPr  
package org.rut.util.algorithm.support; Z/n\Ak sE  
7O84R^!|2  
import org.rut.util.algorithm.SortUtil; Q ;V `  
v1*Lf/  
/** Lf`LFPKb  
* @author treeroot ;'CWAJK  
* @since 2006-2-2 Ou/JN+2A  
* @version 1.0 //9Ro"  
*/ EdbL AagI6  
public class BubbleSort implements SortUtil.Sort{ ;4tmnC>OnA  
M@ t,P?  
/* (non-Javadoc) ^@5#jS2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8FYcUvxfT  
*/ 8VxjC1v+  
public void sort(int[] data) { KV v0bE  
int temp; >G(M&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ J\VG/)E  
if(data[j] SortUtil.swap(data,j,j-1); ^LO=&Cq  
} {y-7xg~}  
} f_y+B]?'M  
} G9"2h \  
} u2%/</]h  
MY1s  
} XaOq&7  
l?F-w;wHN  
选择排序: Ss ;C1:  
cK6M8:KW  
package org.rut.util.algorithm.support; .hd<,\nW  
= zJY5@^'7  
import org.rut.util.algorithm.SortUtil; ME4Ir  
9U$n;uA  
/** j{PuZ^v1  
* @author treeroot j[2?}?  
* @since 2006-2-2 vF,\{sgW  
* @version 1.0 B]jN~CO?  
*/ WB~ ^R<g  
public class SelectionSort implements SortUtil.Sort { ,QU2xw D[  
"_dh6naZX  
/* <4V]>[{W  
* (non-Javadoc) =gL~E9\  
* 7[aSP5e>T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k=L(C^VP  
*/ *tkbC2D  
public void sort(int[] data) { 'oNY4.[  
int temp; rBG8.E36J  
for (int i = 0; i < data.length; i++) { ^,F8 ha  
int lowIndex = i; AWSe!\b  
for (int j = data.length - 1; j > i; j--) { PgZeDUPP  
if (data[j] < data[lowIndex]) { wa/ :JE  
lowIndex = j; 3%c{eZxG=  
} G,,c,  
} lB_&Lq 8G  
SortUtil.swap(data,i,lowIndex); @w:6m&KL9  
} NgH"jg-  
} *p )1c_  
K& / rzs-  
} U)mg]o-VE  
<tp\+v! u  
Shell排序: =fy~-FN_  
,#;%ILF4%  
package org.rut.util.algorithm.support; _c| aRRW  
"7Qc:<ww  
import org.rut.util.algorithm.SortUtil; O{WJi;l  
tu(k"'aJ  
/** haj\Dm  
* @author treeroot G+Vlaa/7  
* @since 2006-2-2 O%:EPdoU  
* @version 1.0 1%W|>M`  
*/ h!#!}|Q'  
public class ShellSort implements SortUtil.Sort{ D4jf%7X!Lu  
.CXe*Vbd  
/* (non-Javadoc) ~xz3- a/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O}VI8OB(&  
*/ 5G-)>  
public void sort(int[] data) { )'\pa2  
for(int i=data.length/2;i>2;i/=2){ %*4Gx +b  
for(int j=0;j insertSort(data,j,i); pMJK?- )  
} OG}auM4  
} '&_<!Nv3  
insertSort(data,0,1); '&~A  
} sR%,l  
^'"sFEV7RN  
/** GUUVE@Z  
* @param data ?9<byEO%M  
* @param j [p3)C<;ZC  
* @param i C/nzlp~  
*/ QC+oSb!!?  
private void insertSort(int[] data, int start, int inc) { \dpsyc  
int temp; 40VdT|n$$  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @r.u8e)l  
} ,]ALyWGuX  
} fG;(&Dx  
} ]A*v\Qy  
G4Y]fzC  
} DFvLCGkDk  
~ $I2{I#W  
快速排序: [3":7bB 'E  
M[9]t("  
package org.rut.util.algorithm.support; y7 tK>aD}  
!M]_CPh]  
import org.rut.util.algorithm.SortUtil; +bnz%/v  
Q<]~>cd^  
/** DkO>?n:-C  
* @author treeroot @WuB&uF=d  
* @since 2006-2-2 CfFNk "0{  
* @version 1.0 G[V?# 7.  
*/ \qPgQsy4  
public class QuickSort implements SortUtil.Sort{ ?kvc`7>  
'IrwlS  
/* (non-Javadoc) \ ]AsL&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [&mYW.O<  
*/ J(&a,w>p  
public void sort(int[] data) { }^J&D=J5V  
quickSort(data,0,data.length-1); UYu 54`'kg  
} cpV:y  
private void quickSort(int[] data,int i,int j){ @=jcdn!\M  
int pivotIndex=(i+j)/2; LGb.>O^  
file://swap E%L]ifA9!  
SortUtil.swap(data,pivotIndex,j); ,nMc. G3  
$~,]F  
int k=partition(data,i-1,j,data[j]); x+h7OvW{  
SortUtil.swap(data,k,j); H^s@qh)L  
if((k-i)>1) quickSort(data,i,k-1); >j]*=&,7  
if((j-k)>1) quickSort(data,k+1,j); |qra.\  
IyE9G:fY  
} E|2klA^+*  
/** l\l\T<wa,  
* @param data w}Q|*!?_  
* @param i &HKrmFgX{  
* @param j xe)< )y  
* @return qcxq-HS2'  
*/ |q$br-0+  
private int partition(int[] data, int l, int r,int pivot) { _"`wUMee  
do{ 54 8w v  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1KxtHLLU  
SortUtil.swap(data,l,r); B8'(3&)My  
} MI[=,0`D  
while(l SortUtil.swap(data,l,r); b2;Weu3WN  
return l; @:DS/#!  
} fT.5@RR7^  
o5+N_5OE}E  
} Hl&]r'bK  
KZV$rJ%G  
改进后的快速排序: cm]D"GFLY  
l7 D/ ]&  
package org.rut.util.algorithm.support; ;FYiXK%  
luZqW`?Bt  
import org.rut.util.algorithm.SortUtil; \$J!B&i  
VHsNz WI  
/** bHcb.;<  
* @author treeroot AR\1w'  
* @since 2006-2-2 fTM^:vkO  
* @version 1.0 LQYT/  
*/ }#@P+T:b  
public class ImprovedQuickSort implements SortUtil.Sort { S<+_yB?  
(JC -4X_  
private static int MAX_STACK_SIZE=4096; Py 8o8*H  
private static int THRESHOLD=10; n }lav  
/* (non-Javadoc) vO" $Xw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wxPg*R+t  
*/ <_""4  
public void sort(int[] data) { 7I4G:-V:^  
int[] stack=new int[MAX_STACK_SIZE]; <wTkPErUG  
qv3L@"Ub  
int top=-1; AX8;x1t^.  
int pivot; _-g:T&#  
int pivotIndex,l,r; m^_)aS  
'w.:I TJf  
stack[++top]=0; avls[Bq  
stack[++top]=data.length-1; ee&QZVL>  
KM (U-<<R  
while(top>0){ ;B`e;B?1Q  
int j=stack[top--]; Ks09F}  
int i=stack[top--]; K)GC&%_$O  
Q>}I@eyJ  
pivotIndex=(i+j)/2; \`x'r$CV  
pivot=data[pivotIndex]; +7+ VbsFG  
"/hs@4{u9  
SortUtil.swap(data,pivotIndex,j); #UU}lG  
>'^l>FPc  
file://partition K@*m6)  
l=i-1; 'rf='Y  
r=j; 3uRnbO-  
do{ M 0->  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |6\ ?"#  
SortUtil.swap(data,l,r); _}Jz_RS2`  
} f7OfN#I  
while(l SortUtil.swap(data,l,r); Fw:s3ON9}  
SortUtil.swap(data,l,j); UeE& 8{=d  
T4Z("  
if((l-i)>THRESHOLD){ ]@ETQ8QN  
stack[++top]=i; ~PuPY:"  
stack[++top]=l-1; 0*:]eM};P  
} 1`_Mc ]  
if((j-l)>THRESHOLD){ -<&"geJA  
stack[++top]=l+1; O\OG~`HBN  
stack[++top]=j; )." zBc#  
} )2F:l0g  
k` (_~/#  
} c<JJuG  
file://new InsertSort().sort(data); /]]\jj#^  
insertSort(data); 1; L!g*!E  
} 6?}8z q[  
/** R|NmkqTK~(  
* @param data bz H5Lc{%  
*/ OAw/  
private void insertSort(int[] data) { Q*$x!q  
int temp; TQ@*eoJj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J+?xfg  
} \ox:/-[c\<  
} K r]!BI?z  
}  =sG(l  
3 ;.{ O%bX  
} wrsETB c  
\"Sqr(~_  
归并排序: ? dSrY  
2%vwC]A  
package org.rut.util.algorithm.support; @u6#Tvxy[  
@uY%;%Pa8  
import org.rut.util.algorithm.SortUtil; M~N'z /  
pS%,wjb&P  
/** Q'~;RE%T  
* @author treeroot "@` mPe/  
* @since 2006-2-2 :Np&G4IM>  
* @version 1.0 Ev0V\tl>0  
*/ XfbkK )d  
public class MergeSort implements SortUtil.Sort{ `! m+g0  
['-ln)96.  
/* (non-Javadoc) N.eSf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7SAu">lIl  
*/ oL }FD !}  
public void sort(int[] data) { >R!^aJ  
int[] temp=new int[data.length]; L?KEe>;r  
mergeSort(data,temp,0,data.length-1); y''?yr  
} !h9 An  
6xz&Qi7w  
private void mergeSort(int[] data,int[] temp,int l,int r){ HEe0dqG  
int mid=(l+r)/2; nk-6W4  
if(l==r) return ; eMz,DYa/G  
mergeSort(data,temp,l,mid); qLYv=h$,  
mergeSort(data,temp,mid+1,r); BzWmV .5  
for(int i=l;i<=r;i++){ V=(4 c  
temp=data;  ]g?G 0m  
} _IpW &  
int i1=l; (2qo9j"j/Y  
int i2=mid+1; D"1ciO8^I]  
for(int cur=l;cur<=r;cur++){ ]]%C\Ryy}  
if(i1==mid+1)  5Y9 j/wA  
data[cur]=temp[i2++]; !2&h=;i~V  
else if(i2>r) k7y!! AV  
data[cur]=temp[i1++]; 62vz 'b  
else if(temp[i1] data[cur]=temp[i1++]; JI\u -+BE  
else sMO3eNLn  
data[cur]=temp[i2++]; _\o +9X!  
} @Gn9x(?J  
} B)^]V<l(w  
$a5K  
} U7x}p^B9\N  
H`@x5RjS   
改进后的归并排序: miN(a; Q2P  
hr6f}2  
package org.rut.util.algorithm.support; toIljca  
Ii|<:BW  
import org.rut.util.algorithm.SortUtil; uF(- h~  
pM VeUK?  
/** 8KoPaq   
* @author treeroot  KQW  
* @since 2006-2-2 iv;;GW{2  
* @version 1.0 $/wr?  
*/ |Z2_1( ku  
public class ImprovedMergeSort implements SortUtil.Sort { Ld`~^<B  
)XO2DY1/&  
private static final int THRESHOLD = 10; R!$j_H  
_TX.}167;-  
/* /Zv}u  
* (non-Javadoc) VCc4nn#  
* U}Hmzb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M>I}^Zp!  
*/ +%gh?  
public void sort(int[] data) { >) S a#w;  
int[] temp=new int[data.length]; ]Uxx_1$,  
mergeSort(data,temp,0,data.length-1); PVtQ&m$y  
} .+[[m$J  
)UJ]IB-Q|1  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^jCkM29eu  
int i, j, k; i1G}m Yz_  
int mid = (l + r) / 2; (4c<0<"$  
if (l == r) UJ6WrO5#kB  
return; NWNgh/9?  
if ((mid - l) >= THRESHOLD) W BiBtU  
mergeSort(data, temp, l, mid); g?@(+\W  
else Z.R^@@RqJ  
insertSort(data, l, mid - l + 1); <,cDEN7  
if ((r - mid) > THRESHOLD) 8@$QN4^u^  
mergeSort(data, temp, mid + 1, r); $rjv4e}7  
else @[JQCQ#r  
insertSort(data, mid + 1, r - mid); D %5 0  
n7{c0;)$  
for (i = l; i <= mid; i++) { +JQN=nTA  
temp = data; <w,aS;v6jp  
} + qS$t  
for (j = 1; j <= r - mid; j++) { $W0lz#s:  
temp[r - j + 1] = data[j + mid]; Jn:GqO  
} Y,&)%Eo<  
int a = temp[l]; Z3#3xG5pl  
int b = temp[r]; Tp0Tce/  
for (i = l, j = r, k = l; k <= r; k++) { 92} , A`=  
if (a < b) { ZGp8$Y>r  
data[k] = temp[i++]; Y+G4:  
a = temp; ul% q6=f)  
} else { TkQ05'Qc  
data[k] = temp[j--]; 3cOXtDV YT  
b = temp[j]; *YDx6\><  
} }D|"$*  
} :W'1Q2  
} ^rxXAc[  
LL,~&5{  
/** v=X\@27= ?  
* @param data m Y%PG  
* @param l a!>AhOk.  
* @param i 8\ :T*u3  
*/ "kN5AeRg  
private void insertSort(int[] data, int start, int len) { Y}Qu-fm  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }S42.f.p  
} 7v\OS-  
} khEHMvVH  
} *?i~AXJm  
} n ~ =]/  
n$~RgCf  
堆排序: 12rr:(#%s  
@w|~:>/g  
package org.rut.util.algorithm.support; k'u2a  
#U6Wv1H{Lp  
import org.rut.util.algorithm.SortUtil; OY@/18D<>  
f:HRrKf9  
/** zfxxPL'  
* @author treeroot KD#ip3  
* @since 2006-2-2 \GPWC}V\s  
* @version 1.0 Cjwg1?^RZ  
*/ F!Nx^M1  
public class HeapSort implements SortUtil.Sort{ h7%<  
A).wjd(_,  
/* (non-Javadoc) (F#Qunze  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]p$fEW g  
*/ _/PjeEm $p  
public void sort(int[] data) { `|]juc  
MaxHeap h=new MaxHeap(); M\T6cN@m  
h.init(data); W;hI[9  
for(int i=0;i h.remove(); r?[Zf2&  
System.arraycopy(h.queue,1,data,0,data.length); :K W   
} &0N 3 p  
y|1-,u.$  
private static class MaxHeap{ #&$4tTl  
i*F^;-q)  
void init(int[] data){ 3tgct <"  
this.queue=new int[data.length+1]; tF=96u_X  
for(int i=0;i queue[++size]=data; -o=qYkyLK  
fixUp(size); 1o.]"~0:  
} -1U]@s  
} gI T"nG=a4  
7@06x+!  
private int size=0; Aw >DZ2  
'Z;R!@Dm  
private int[] queue; 7<X_\,I  
kkh#VGh"  
public int get() { * 78TT \q<  
return queue[1]; .PF~8@1ju  
} Plt~l3_  
SVeL c  
public void remove() { zvSfW# *  
SortUtil.swap(queue,1,size--); 6LUB3;g7  
fixDown(1); G0<m3 Up  
} CbwQ'c$}  
file://fixdown C~kw{g+|  
private void fixDown(int k) { !v$hqNt7  
int j; Z(CzU{7c  
while ((j = k << 1) <= size) { \GBv@  
if (j < size %26amp;%26amp; queue[j] j++; x.}iSE{  
if (queue[k]>queue[j]) file://不用交换 Uv.{=H:  
break; KZ&8aulP  
SortUtil.swap(queue,j,k); 0~"{z >s '  
k = j; <sn^>5Ds  
} $,bLb5}Qu  
} * y u|]T  
private void fixUp(int k) { %}2 s74D*Z  
while (k > 1) { o_jVtEP  
int j = k >> 1; _>*TPlB  
if (queue[j]>queue[k]) 9'T nR[>  
break; -R| v&h%T  
SortUtil.swap(queue,j,k); j].XVn,  
k = j; VYik#n>|Gp  
} PYW~x@]k%,  
} {QJJw}!#  
_?mu2!X  
} V\4'Hd  
'V } -0  
} Z+FJ cvYx  
[N.4 i" Cd  
SortUtil: FzW7MW>\x  
8)'OXR0/  
package org.rut.util.algorithm; 1;S@XC>  
;5dJ5_}  
import org.rut.util.algorithm.support.BubbleSort; Pv/$ ;R%  
import org.rut.util.algorithm.support.HeapSort; <08)G7  
import org.rut.util.algorithm.support.ImprovedMergeSort; >'7Icx  
import org.rut.util.algorithm.support.ImprovedQuickSort; 8,=,'gFO  
import org.rut.util.algorithm.support.InsertSort; #sN]6  
import org.rut.util.algorithm.support.MergeSort; #8rLB(  
import org.rut.util.algorithm.support.QuickSort; >pUR>?t"  
import org.rut.util.algorithm.support.SelectionSort; CKy' 8I9  
import org.rut.util.algorithm.support.ShellSort; 8)/d8@  
J?LetyDNr]  
/** O_*%_S}F&  
* @author treeroot 3Vs8"BFjz  
* @since 2006-2-2 0.=dOz r  
* @version 1.0 N-y[2]J90  
*/ "V}WV!w  
public class SortUtil { |!,;IoZ  
public final static int INSERT = 1; 1F{c5  
public final static int BUBBLE = 2; X8"4)IZ3  
public final static int SELECTION = 3; Z`T]jm-3  
public final static int SHELL = 4; =YOq0  
public final static int QUICK = 5; 5$d>:" >  
public final static int IMPROVED_QUICK = 6; /&_$+Iun  
public final static int MERGE = 7; MA6(VII  
public final static int IMPROVED_MERGE = 8; )pbsvR_  
public final static int HEAP = 9; nD{o8;  
jH({Qc,97  
public static void sort(int[] data) { fX2sjfk  
sort(data, IMPROVED_QUICK); #Ipi3  
} Vo"Wr>F  
private static String[] name={ pE,2pT2>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E{k$4  
}; 9$$dSN\&  
]{s0/(EA  
private static Sort[] impl=new Sort[]{ TD!--l*gL  
new InsertSort(), SYkwM6  
new BubbleSort(), ~}pc&jz>q  
new SelectionSort(), _Dr9 w&;<  
new ShellSort(), 8BE] A_X  
new QuickSort(), %|AebxB'o  
new ImprovedQuickSort(), jmPnUn  
new MergeSort(), |Bz1u|uc  
new ImprovedMergeSort(), [;t-XC?[nk  
new HeapSort() J2adG+=  
}; 9sG]Q[:.]  
xy))}c%  
public static String toString(int algorithm){ FUzN }"\1  
return name[algorithm-1]; ~@=(#tO.  
} n+MWny  
4Oo{\&(  
public static void sort(int[] data, int algorithm) { z?dd5.k  
impl[algorithm-1].sort(data); `i`+yh>pc#  
} `%;Hj _X}  
$>Qq 7  
public static interface Sort { g&z8t;@  
public void sort(int[] data); E@,m +  
} N,W ?}  
'HKDGQl`  
public static void swap(int[] data, int i, int j) { d^MRu#]  
int temp = data; 'b)qP|  
data = data[j]; DK)T2{:  
data[j] = temp; 6S`0<Z;;/  
} %5RR<[_/;  
} 3{$vN).  
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