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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。 txw:m*(%  
插入排序: 0ERA(=w5  
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package org.rut.util.algorithm.support; ~sx?aiO  
3[amCKel  
import org.rut.util.algorithm.SortUtil; .k|8nNj  
/** R#DnV[!\  
* @author treeroot tU.Y$%4  
* @since 2006-2-2 7='lu;=,  
* @version 1.0 IZoS2^:yw  
*/ !8(: G6Ne  
public class InsertSort implements SortUtil.Sort{ V)mitRaV  
Vf:/Kokq  
/* (non-Javadoc) |VQ17*4ff1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xy5&}_Y  
*/ gi#bU  
public void sort(int[] data) { +`>Tuz~  
int temp; \]1qAFB5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "AMbU6 8  
} _o`+c wc  
} 3A!`U6C(  
} YzNSZJPD  
$F"'= +0  
} Qyx%:PE  
a<*q+a(*W  
冒泡排序: ' @i0~  
50q(8F-N  
package org.rut.util.algorithm.support; rozp  
n** W  
import org.rut.util.algorithm.SortUtil; [T<nTB# w  
f~ kz=R=  
/** F9IrbLS9c  
* @author treeroot 7u73v+9qn:  
* @since 2006-2-2 la+RK  
* @version 1.0 E">FH >8K}  
*/ <[Oe.0SGu  
public class BubbleSort implements SortUtil.Sort{ ia6%>^  
P|*c7+q  
/* (non-Javadoc) ?5-Y'(r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K%iWUl;  
*/ B|XrjI?  
public void sort(int[] data) { wyJ+~  
int temp; jrk48z  
for(int i=0;i for(int j=data.length-1;j>i;j--){  ~ "Xcd8:  
if(data[j] SortUtil.swap(data,j,j-1); Zawnx=  
} W<| M0S{  
} ]wb^5H  
} m[n=t5~  
} g9C/Oj`I  
2t 7':X  
} XT+V> H I  
AQ+MjS,  
选择排序: ynY(  
>J(._K  
package org.rut.util.algorithm.support; F#Y9 @E  
)S"!)\4 b  
import org.rut.util.algorithm.SortUtil; GWd71ZtFO  
b?i5C4=K  
/** 0])D)%B k  
* @author treeroot I8};t b#  
* @since 2006-2-2  /5M0[C E  
* @version 1.0 %  ]G'u  
*/ lgrD~Y (x  
public class SelectionSort implements SortUtil.Sort { mk.1jx ?l  
@%iZT4`Ejf  
/* 69< <pm,m  
* (non-Javadoc) pY.R?\  
* X6 E^5m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r c++c,=  
*/ BV;dV6`z  
public void sort(int[] data) { 4Ys\<\~d  
int temp; kA/4W^]Ws  
for (int i = 0; i < data.length; i++) { pNUe|b+P  
int lowIndex = i; b:B+x6M  
for (int j = data.length - 1; j > i; j--) { vo (riHH  
if (data[j] < data[lowIndex]) { p.@ kv  
lowIndex = j; -So$ f-y  
} R` g'WaDk  
} z H|YVg  
SortUtil.swap(data,i,lowIndex); (>]frlEU~  
} xB4}9zN s  
} Wdk]>w 'L  
Rp^fY_  
} V_\9t8  
J(>T&G;  
Shell排序: pSa pF)1>  
A4{14Y;?  
package org.rut.util.algorithm.support; s#cb wDT  
==#mlpi`S[  
import org.rut.util.algorithm.SortUtil; O}s Mqh  
P*6h $T  
/** Hnft1   
* @author treeroot ,F%2'W  
* @since 2006-2-2 S$N!Dj@e;  
* @version 1.0 i1dE.f ;  
*/ Tfq7<<0$N  
public class ShellSort implements SortUtil.Sort{ Uv)B  
v_|k:l  
/* (non-Javadoc) H~$*R7~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,tTq25~H\  
*/ Efp[K}Z^$  
public void sort(int[] data) { q!;u4J  
for(int i=data.length/2;i>2;i/=2){ )&6ZgRq  
for(int j=0;j insertSort(data,j,i); o' EJ,8  
} *q&^tn b  
} TI/5'Oke$  
insertSort(data,0,1); ~Z`Cu~7  
} '[Zgwz;z  
I3qTSX-  
/** x$hT+z6DUC  
* @param data f/95}6M  
* @param j sEymwpm9  
* @param i YMn*i<m  
*/ T{So 2@_&  
private void insertSort(int[] data, int start, int inc) { yQcIfl]f  
int temp; #fx>{ vzH  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0fJz[;dV>n  
} &K*Kr=9N  
} \/s0p  
} A('o &H  
g@zhhBtQ  
} Y{d-k1?s5  
J ?0P{{  
快速排序: icK$W2<8mg  
u|"y&>!R-  
package org.rut.util.algorithm.support; lFtH;h,==v  
dI+Y1Vq  
import org.rut.util.algorithm.SortUtil; j=dGNi)R  
x,NV{uG$n  
/** 8'PK}heBU  
* @author treeroot M3G ecjR  
* @since 2006-2-2 m Ce"=[  
* @version 1.0 w8D6j%C  
*/ mY[*(a  
public class QuickSort implements SortUtil.Sort{ yUjkRT&h  
(u4'*[o\t  
/* (non-Javadoc) 7NvnCs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3a?|}zr4  
*/ '=0l{hv@  
public void sort(int[] data) { R=2"5Hy=  
quickSort(data,0,data.length-1); '':MhRb  
} x7xMSy  
private void quickSort(int[] data,int i,int j){ B[IWgvB(e  
int pivotIndex=(i+j)/2; !]3kFWs  
file://swap MTip4L W9  
SortUtil.swap(data,pivotIndex,j);  RnSll-  
bkuJN%  
int k=partition(data,i-1,j,data[j]); KV)if'  
SortUtil.swap(data,k,j); eI9#JM|2  
if((k-i)>1) quickSort(data,i,k-1); I~GHx5Dk  
if((j-k)>1) quickSort(data,k+1,j); l(9AwVoAR|  
)(9[>_+40  
} Ft^X[5G4L  
/** 3bRW]mP8  
* @param data [<|$If99\  
* @param i q/^?rd  
* @param j Zts1BWL[  
* @return ?bPW*A82{q  
*/ Y(u`K=*  
private int partition(int[] data, int l, int r,int pivot) { )Ma/] eZ^I  
do{ *xjP^y":  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); O!ilTMr  
SortUtil.swap(data,l,r); ~h:(9q8NLC  
} v@4vitbG9  
while(l SortUtil.swap(data,l,r); F`La_]f?b\  
return l; Z,tHyyF?j  
} T`bUBrK6g`  
zR4]buHnE  
} OdpHF~(Y/  
^T*!~K8A  
改进后的快速排序: -'F27])  
xI_0`@do  
package org.rut.util.algorithm.support; .D;6 r4S  
Ob{Tn@  
import org.rut.util.algorithm.SortUtil; i;atYltEJ2  
)HcLpoEi  
/** FTr'I82m(  
* @author treeroot W^7yh&@lU  
* @since 2006-2-2 SOZs!9oi  
* @version 1.0 )PkW,214#  
*/ @?jtB  
public class ImprovedQuickSort implements SortUtil.Sort { ol K+|nR  
+|x{?%.O  
private static int MAX_STACK_SIZE=4096; G`;\"9t5h  
private static int THRESHOLD=10; z%1e>`\E  
/* (non-Javadoc) c39j|/!;Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]9PG"<^k  
*/ ;%Px~g  
public void sort(int[] data) { =XtQ\$Pax  
int[] stack=new int[MAX_STACK_SIZE]; l,~`o$ _  
x]@z.Yj  
int top=-1; r\cY R}v  
int pivot; 9Z }<H/q  
int pivotIndex,l,r; t(dVd%   
R={#V8D~  
stack[++top]=0; 6$0<&')Yb  
stack[++top]=data.length-1; w5^k84vye  
<5^m`F5  
while(top>0){ NMQG[py!f  
int j=stack[top--]; r \[|'hA  
int i=stack[top--]; _Hd|y  
|Y8}*C\M.h  
pivotIndex=(i+j)/2; WNZYs  
pivot=data[pivotIndex]; V= -  
6O,:I  
SortUtil.swap(data,pivotIndex,j); in5e *  
p_ f<@WE  
file://partition '<xE 0<  
l=i-1; (@qPyM6~}  
r=j; Y mL{uV$  
do{ [V>s]c<4`o  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); & Zn`2%  
SortUtil.swap(data,l,r); o='A1P  
} ^^zj4 }On?  
while(l SortUtil.swap(data,l,r); *u:,@io7'G  
SortUtil.swap(data,l,j); 0w: 3/WO  
//;(KmU9  
if((l-i)>THRESHOLD){ Hq+QsplG  
stack[++top]=i; d3|/&gDBK  
stack[++top]=l-1; )[J @s=  
} )iM( \=1ff  
if((j-l)>THRESHOLD){ =36fS/Gb  
stack[++top]=l+1; mj&OZ+  
stack[++top]=j; tGgDS)  
} Z#B}#*<C  
{%CW!Rc  
} |d&C<O;f  
file://new InsertSort().sort(data);  ,vO\n^  
insertSort(data); S0Io$\ha  
} kz1#"8Zd!  
/** o&&`_"18  
* @param data Kc95yt  
*/ qH5nw}]  
private void insertSort(int[] data) { Jfk#E^1  
int temp; .d r Y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FZO&r60$E  
} iCA-X\E  
} N$=9R  
} 39hep8+  
#g0_8>t  
} #HH[D;z  
&A*E)T#>#  
归并排序: %\(-<aT  
|(ab0b #  
package org.rut.util.algorithm.support; +R L@g*`  
BC/5bA  
import org.rut.util.algorithm.SortUtil; oe.Jm#?2.  
{lH'T1^m  
/**  ?O+.  
* @author treeroot &6C]| 13;  
* @since 2006-2-2 V8):!  
* @version 1.0 2J{vfF  
*/  Igmg&  
public class MergeSort implements SortUtil.Sort{ (oR~%2K  
38T] qz[Sn  
/* (non-Javadoc) l`N4P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )DhE~  
*/ ;"u,G!  
public void sort(int[] data) { 5I,NvHD4  
int[] temp=new int[data.length]; ~?Vod|>  
mergeSort(data,temp,0,data.length-1); n@ SUu7o  
} auc:|?H~1n  
R6BbkYWrX  
private void mergeSort(int[] data,int[] temp,int l,int r){ #^r-D[/m  
int mid=(l+r)/2; [8UZ5_1WL  
if(l==r) return ; 0 K#|11r  
mergeSort(data,temp,l,mid); C3Q #[  
mergeSort(data,temp,mid+1,r); @'}2xw[eU  
for(int i=l;i<=r;i++){ ]7cciob  
temp=data; .%{B=_7  
} ?4U4o<   
int i1=l; S*=^I2;  
int i2=mid+1; |" WL   
for(int cur=l;cur<=r;cur++){ S9P({iZK  
if(i1==mid+1) vD9\i*\2  
data[cur]=temp[i2++]; l[IL~  
else if(i2>r) | n)4APX\Q  
data[cur]=temp[i1++]; p0 X%^A,4  
else if(temp[i1] data[cur]=temp[i1++]; zl6]N3+4  
else wkGr}  
data[cur]=temp[i2++]; Iy49o!  
} i8k} B o  
} fMFkA(Of^  
2F`#df  
} yQUrHxm  
d@g29rs  
改进后的归并排序: +B " aUF  
Be]z @E1x  
package org.rut.util.algorithm.support; [n| }>  
oNe:<YT  
import org.rut.util.algorithm.SortUtil; iB(?}SaAZ  
m!G(vhA,_w  
/** lAM)X&}0  
* @author treeroot e-P{)L<s5  
* @since 2006-2-2 H[p~1%Lq  
* @version 1.0 VD7-;  
*/ esA^-$  
public class ImprovedMergeSort implements SortUtil.Sort { |(*btdqy3  
I+;e#v,%U  
private static final int THRESHOLD = 10; 1Z)P.9c  
hWbu Z%  
/* #*.4Jv<R  
* (non-Javadoc) +58^{_k+%  
* FS&QF@dtgf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1aO(+](;  
*/ MbCz*oW  
public void sort(int[] data) { *Vq'%b9  
int[] temp=new int[data.length]; ]Ss63Vd  
mergeSort(data,temp,0,data.length-1); l<uI-RX "  
} Uz,P^\8^$  
Y\_mq d  
private void mergeSort(int[] data, int[] temp, int l, int r) { /nA>ox78  
int i, j, k; F/lL1nTdK  
int mid = (l + r) / 2; { 'A 15  
if (l == r) JUA%l  
return; jZqa+nG51  
if ((mid - l) >= THRESHOLD) [dP<A ?s  
mergeSort(data, temp, l, mid); ]~dB| WB  
else ,&4 [`d  
insertSort(data, l, mid - l + 1); 8 A]8yX =  
if ((r - mid) > THRESHOLD) 0'r}]Mws  
mergeSort(data, temp, mid + 1, r); >S`=~4  
else @HMH>;haE  
insertSort(data, mid + 1, r - mid); flqr["czwK  
5OGwOZAj52  
for (i = l; i <= mid; i++) { hs;|,r  
temp = data; d7b`X<=@s  
} NiVLx_<Pr'  
for (j = 1; j <= r - mid; j++) { X%-hTl  
temp[r - j + 1] = data[j + mid]; CPNV\qCY  
} .O0eSp|e  
int a = temp[l]; j -o  
int b = temp[r]; KYB3n85 1  
for (i = l, j = r, k = l; k <= r; k++) { ,?j!c*  
if (a < b) { k7*-v/ *S  
data[k] = temp[i++]; .aa7*e  
a = temp; DL~! ^fx  
} else { 0K.$C~ C  
data[k] = temp[j--]; "gI-S[  
b = temp[j]; T<7}IH$6xE  
} E#m^.B-}  
} YK8l#8K  
} W3\+51P  
A ;`[va  
/** CpN*1s})d  
* @param data XU}i<5  
* @param l YGChVROG~  
* @param i  !vl1#@  
*/ bu pW*fD:  
private void insertSort(int[] data, int start, int len) { %1;Y`>  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8cY5:plK  
} K[noW  
} K6B6@  
} s!YX<V  
} *B&i`tq  
;MYK TE>m  
堆排序: aRWj+[[7y  
?cz7s28a  
package org.rut.util.algorithm.support; rM~Mqpk  
UVi9}zr  
import org.rut.util.algorithm.SortUtil; :+_H%4+  
Z] cFbl\ma  
/** ]OKKR/:  
* @author treeroot b9.7j!W  
* @since 2006-2-2 u8A,f}D 3  
* @version 1.0 L~|_)4  
*/ l3MA&&++KF  
public class HeapSort implements SortUtil.Sort{ Aj\m57e,6  
r7U[QTM%  
/* (non-Javadoc) uKIR$n"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iN u k5  
*/ <4?(|Vh[m]  
public void sort(int[] data) { ;erxB6*  
MaxHeap h=new MaxHeap(); !&KE">3Qu  
h.init(data); 65 &+Fv  
for(int i=0;i h.remove(); }VH` \g}  
System.arraycopy(h.queue,1,data,0,data.length); = "Lb5!  
} E0r#xmk  
:]\-GJV5  
private static class MaxHeap{ ezJ^ r,D|  
M#],#o*G  
void init(int[] data){ 9J49s1  
this.queue=new int[data.length+1]; u`+kH8#  
for(int i=0;i queue[++size]=data; /6N!$*8  
fixUp(size); /WAOpf5  
} `a7b,d  
} K^AIqL8  
O'~^wu.  
private int size=0; <3k9 y^0  
\@6w;tyi  
private int[] queue; B$97"$#u  
i"!j:YEo  
public int get() { LGRhCOP:  
return queue[1]; G @L `[Wu  
} :NwFJc  
.0y .0=l  
public void remove() { Y5IQhV.  
SortUtil.swap(queue,1,size--); Y-DHW/Z~  
fixDown(1); kafj?F  
} c&L|e$C]  
file://fixdown >?X(, c  
private void fixDown(int k) { F JxH{N6a  
int j; jvE&%|Ngw  
while ((j = k << 1) <= size) { ,}OQzK/"mP  
if (j < size %26amp;%26amp; queue[j] j++; ",E$}= ,Z  
if (queue[k]>queue[j]) file://不用交换 _32 o7}!x  
break; !| GD8i  
SortUtil.swap(queue,j,k); =WFG[~8  
k = j; #)%dG3)e  
} 9qJ:h-?M  
} Qo["K}Ty  
private void fixUp(int k) { a,*|*Cv  
while (k > 1) { 3 _DJ  
int j = k >> 1; 5=_))v<Tp  
if (queue[j]>queue[k]) 'khhn6itA  
break; N*hx;k9  
SortUtil.swap(queue,j,k); cC`PmDGq  
k = j; s)~H_,  
} /$ueLa  
}  D z>7.'3  
7LW %:0  
} $xj>j  
euh rEjwkH  
} hKK"D:?PRs  
o:/yme G  
SortUtil: fJG!TQJ[Y  
%LdFS~  
package org.rut.util.algorithm; yD&UH_ 1g  
AUkePp78  
import org.rut.util.algorithm.support.BubbleSort; ,?!4P+ob  
import org.rut.util.algorithm.support.HeapSort; 3:P "6mN  
import org.rut.util.algorithm.support.ImprovedMergeSort; xOpCybmc  
import org.rut.util.algorithm.support.ImprovedQuickSort; X9uYqvP\(  
import org.rut.util.algorithm.support.InsertSort; :+S~N)0j^  
import org.rut.util.algorithm.support.MergeSort; N^tH&\G\m  
import org.rut.util.algorithm.support.QuickSort; 0',-V2  
import org.rut.util.algorithm.support.SelectionSort; h IUO=f  
import org.rut.util.algorithm.support.ShellSort; [E%Ov0OC  
z 4`H<Pn  
/** e#uF?v]O  
* @author treeroot &f>1/"lnd\  
* @since 2006-2-2 _/[(&}M  
* @version 1.0 w8AHs/'r  
*/ cLnvb!g'#  
public class SortUtil { h)C `w'L  
public final static int INSERT = 1; OOX}S1lA  
public final static int BUBBLE = 2; 4^BHJOvs  
public final static int SELECTION = 3; NA8$G|.?  
public final static int SHELL = 4; wn{DY v7B  
public final static int QUICK = 5; 'St\$X  
public final static int IMPROVED_QUICK = 6; {BJn9B  
public final static int MERGE = 7; J{5&L &4  
public final static int IMPROVED_MERGE = 8; GCA?sFwo>  
public final static int HEAP = 9; |/35c0IM  
{d,~=s0T  
public static void sort(int[] data) { 'd 6z^Z6  
sort(data, IMPROVED_QUICK); A@lY{e  
} PP)-g0^@  
private static String[] name={ !tofO|E5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ::rKW *?  
}; -}*YfwK  
MXU8QVSY"  
private static Sort[] impl=new Sort[]{ 41`&/9:"_M  
new InsertSort(), 4m$Xjj`vE  
new BubbleSort(), vb Mv8Nk  
new SelectionSort(), ];o[Yn'>o  
new ShellSort(), ~~'UQnUN4  
new QuickSort(), zc#aQ.  
new ImprovedQuickSort(), 5S ?+03h~  
new MergeSort(), [S!_ubP5  
new ImprovedMergeSort(), 9i+SU|;j  
new HeapSort() w[wrZ:[  
}; </8F  
J'>i3e Lq  
public static String toString(int algorithm){ tO ^KCnL  
return name[algorithm-1]; ~<#!yRy>r  
} a5xp[TlXn.  
`[Xff24(eb  
public static void sort(int[] data, int algorithm) { A5> ,e|  
impl[algorithm-1].sort(data); |cE 69UFB  
} $>fMu   
Z6`[ dAo  
public static interface Sort { 2oFHP_HVfu  
public void sort(int[] data); As7Y4w*+  
} mN:p=.& <  
RK`C31Ws  
public static void swap(int[] data, int i, int j) { mxV0"$'Fm  
int temp = data; KoNJ;YiKtN  
data = data[j]; /Z*XKIU6v/  
data[j] = temp; g4 |s9RMD  
} JH;\wfr D  
} 7 a}qnk %  
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