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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。 M}F) P&Y  
插入排序: Q|HOy8O}Z  
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package org.rut.util.algorithm.support; _/[(&}M  
uQg&A`4  
import org.rut.util.algorithm.SortUtil; cLnvb!g'#  
/** IY9##&c3>  
* @author treeroot ZNbb8v  
* @since 2006-2-2 ulnlRx  
* @version 1.0 P EAo'63$  
*/ v4x1=E  
public class InsertSort implements SortUtil.Sort{ yB^_dE  
RV+0C&0ff  
/* (non-Javadoc) `zRm "G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > 1&_-  
*/ lMBXD?,,J  
public void sort(int[] data) { _NJq%-,'  
int temp; . !;K5U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7 S2QTRvH  
} +~\c1|f  
} Gl>_C@n0h  
} !tofO|E5  
::rKW *?  
} -}*YfwK  
Wd_KZ}lX  
冒泡排序: lAPvphO  
L9)nRV8  
package org.rut.util.algorithm.support; sv?Lk4_  
js\|xfDxP  
import org.rut.util.algorithm.SortUtil; |nj,]pA  
wi/dR}*A  
/** jPNm $Y1  
* @author treeroot VM[Vh k[  
* @since 2006-2-2 %CiZ>`5n#  
* @version 1.0 rYMHc@a9(  
*/ +gOv5Eno-  
public class BubbleSort implements SortUtil.Sort{ :CAbGs:56  
ep2#a#&'  
/* (non-Javadoc) t<2B3&o1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eE-@dU?  
*/ $]yHk  
public void sort(int[] data) { 'hi.$G_R  
int temp; nZ2mY!*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ kMLWF  
if(data[j] SortUtil.swap(data,j,j-1); wtw  
} S>pbplE  
} ]RJcY1  
} m0 k~8^L@f  
} XZFM|=%X  
_7"G&nZ0  
} 2U;ImC1g  
tk <R|i  
选择排序: eO:wx.PW  
IZkQmA=  
package org.rut.util.algorithm.support; -?$Hr\  
z!GLug*j`  
import org.rut.util.algorithm.SortUtil; qEoa%O  
?xuhN G@  
/** #\]:lr{>?4  
* @author treeroot }XiV$[xHd  
* @since 2006-2-2 +5+?)8Ls  
* @version 1.0 n^ AQ!wC  
*/ 5L}qL?S`x|  
public class SelectionSort implements SortUtil.Sort { zLxO\R!d  
"NamP\hj  
/* [nam H a  
* (non-Javadoc) KGsH3{r  
* 5 5_#?vw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }t[?g)"M#-  
*/ (0T6kD  
public void sort(int[] data) { q^_PR|  
int temp; v} $KlT  
for (int i = 0; i < data.length; i++) { Xn'{g  
int lowIndex = i; }qf)L .  
for (int j = data.length - 1; j > i; j--) { .*s1d)\:  
if (data[j] < data[lowIndex]) { lklMdsIdj  
lowIndex = j; M 8BN'% S  
} 5:ZM-kZT  
} o7*z@R"  
SortUtil.swap(data,i,lowIndex); (*Jcx:rH  
} .(0'l@#fT  
} aAr gKM f  
v/E_A3Ay&  
} ;9r`P_r  
8_S<zE`Ha  
Shell排序: 0OndSa,  
C]tHk)<|42  
package org.rut.util.algorithm.support; p<2A4="&  
0P<bS?e<l  
import org.rut.util.algorithm.SortUtil; Lii,L}  
\lnpsf  
/** _BV'J92.  
* @author treeroot 9oK#n'hjb  
* @since 2006-2-2 %C!u/:.Kv  
* @version 1.0 !?o661+b  
*/ h$Z_r($b  
public class ShellSort implements SortUtil.Sort{ ; /3 <  
i 5"g?Wa2N  
/* (non-Javadoc) S&A, Q'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xq9n-;%zL  
*/ K>2mm!{  
public void sort(int[] data) { _Kp{b"G  
for(int i=data.length/2;i>2;i/=2){ Ccw6,2`&  
for(int j=0;j insertSort(data,j,i); pFLR!/J  
} 9~^%v zM  
} `43`*=  
insertSort(data,0,1); 8Q&hhmOnz  
} 4,!S?:7  
G H N  
/** 4|ryt4B  
* @param data aD aQ 7i  
* @param j cvR|qHNX  
* @param i +)#d+@-  
*/ uM\(#jZ  
private void insertSort(int[] data, int start, int inc) { q^ {Xn-G  
int temp; pv.0!a/M  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /hPgOaB  
} V=pg9KR!T  
} T>l=0a #  
} W 2VH?-Gw  
-vcHSwG b  
} (%huWW j  
<n iq*  
快速排序: 5G@z l  
^FJ=/#@T  
package org.rut.util.algorithm.support; ;&Q8xC2  
P#/k5]g  
import org.rut.util.algorithm.SortUtil; IS`1}i$1%  
{%$eq{~m  
/** NrE&w H:  
* @author treeroot t> J 43  
* @since 2006-2-2 (c `t'e  
* @version 1.0 pJC@}z^cw  
*/ n{dl- P  
public class QuickSort implements SortUtil.Sort{ fLj#+h-!  
sjpcz4|K  
/* (non-Javadoc) bE-{ U/;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `p@YV(  
*/ ~yH<,e  
public void sort(int[] data) { yIBT*,4  
quickSort(data,0,data.length-1); c}a.  
} *Z! #6(G  
private void quickSort(int[] data,int i,int j){ 'k=GSb  
int pivotIndex=(i+j)/2; bq/*99``  
file://swap =@U~ sl [  
SortUtil.swap(data,pivotIndex,j); b{|Ha3;w  
x | =  
int k=partition(data,i-1,j,data[j]); NPws^  
SortUtil.swap(data,k,j); };[~>Mzl  
if((k-i)>1) quickSort(data,i,k-1); | I_,;c  
if((j-k)>1) quickSort(data,k+1,j); TSHsEcfO  
e&G!5kz!  
} B w1ir  
/** Om%{fq&  
* @param data eHCLENLmB  
* @param i jTbJL  
* @param j !/W[6'M#p  
* @return *ip2|2G$  
*/ @EZ@X/8{&  
private int partition(int[] data, int l, int r,int pivot) { 5Z]zul@+*  
do{ :-B,Q3d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); zY\pZG  
SortUtil.swap(data,l,r); 0FrmZ$  
} /3F4t V  
while(l SortUtil.swap(data,l,r); Az29?|e  
return l; 5?+ECxPt  
} NIcPjo  
xS%Z   
} gWm -}Nb4  
$Q,Fr; B  
改进后的快速排序: }5~|h%  
nUi 4!|r  
package org.rut.util.algorithm.support; 5[.Dlpa'7  
F-?K]t#  
import org.rut.util.algorithm.SortUtil; iUl5yq  
.4c*  _$  
/** 8W$uw~|dw  
* @author treeroot tMxa:h;/x  
* @since 2006-2-2 vT)(#0>z  
* @version 1.0 R=g~od[N_  
*/ 7iCH$}  
public class ImprovedQuickSort implements SortUtil.Sort { ~Zbr7zVn  
J0 BA@jH5  
private static int MAX_STACK_SIZE=4096; %$/t`'&o-  
private static int THRESHOLD=10; hu (h'  
/* (non-Javadoc) bD_|n!3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tw BwqQ)t  
*/ BsV2Q`(gT  
public void sort(int[] data) { km1{Oh  
int[] stack=new int[MAX_STACK_SIZE]; q_eGY&M  
S(kj"t*3  
int top=-1; \ .+.VK  
int pivot; J%d\ 7  
int pivotIndex,l,r; BdcTKC  
QeP8Vl&e:  
stack[++top]=0; zPWX%1Qr  
stack[++top]=data.length-1; C$o#zu q -  
T#'+w@Q9{9  
while(top>0){ \ IJ\  
int j=stack[top--]; #9aB3C  
int i=stack[top--]; 1&A@Zo5|  
aIV(&7KT4  
pivotIndex=(i+j)/2; 07WZ w1(;  
pivot=data[pivotIndex]; *RugVH4  
M)td%<_  
SortUtil.swap(data,pivotIndex,j); '=?IVm #C  
va \ 5  
file://partition fZU#%b6G  
l=i-1; +g8wc(<ik  
r=j; H Myw:?  
do{ ]O'dwC  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); H^cB ?i  
SortUtil.swap(data,l,r); BX :77?9,+  
} aBk~/  
while(l SortUtil.swap(data,l,r); o@TxDG  
SortUtil.swap(data,l,j); H\7#$ HB  
&{${Fq  
if((l-i)>THRESHOLD){ LB}y,-vX>  
stack[++top]=i; '<" eG!O  
stack[++top]=l-1; NZ:A?h2JR  
} xQV5-VoFC  
if((j-l)>THRESHOLD){ OZ\]6]L  
stack[++top]=l+1; Ei!5Qya>  
stack[++top]=j; dn0?#=  
} j0b?dKd  
SE= 3`rVJ  
} }HB)%C50.  
file://new InsertSort().sort(data); 8F|8zX&  
insertSort(data); >5C|i-HX  
} $ 2'AY  
/** U 2k^X=yl  
* @param data ~A<1xszC  
*/ ?3bUE\p  
private void insertSort(int[] data) { S2nF13u  
int temp; j)IXe 0dMC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >SO !{  
} C'x?riJ/  
} q{/>hvl  
} v'Y)~Kv@!  
?o'!(3`L  
} n_5m+ 1N  
Bw2-4K\"kc  
归并排序: D<9FSxl6  
q]F2bo  
package org.rut.util.algorithm.support; MONfA;64/  
4%wP}Zj#  
import org.rut.util.algorithm.SortUtil; b e[KNrO  
~_C[~-  
/** S#+Dfa`8X  
* @author treeroot t,#9i#q#  
* @since 2006-2-2 e(7F| G*  
* @version 1.0  # Vz9j  
*/ rj zRZ  
public class MergeSort implements SortUtil.Sort{ GKf,1kns  
k(|D0%#b7  
/* (non-Javadoc) 69{^Vfd;Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JjarMJr| D  
*/ nb}*IExd  
public void sort(int[] data) { +*"u(7AV  
int[] temp=new int[data.length]; PLDg'4DMg  
mergeSort(data,temp,0,data.length-1); nG<_&h  
} "&;>l<V  
}C1&}hZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ F9rxm  
int mid=(l+r)/2; ssbvuTr  
if(l==r) return ; v%O KOrJ  
mergeSort(data,temp,l,mid); 4DY\QvW5  
mergeSort(data,temp,mid+1,r); ((i%h^tGa;  
for(int i=l;i<=r;i++){ hKP7p   
temp=data; w?^qAj(*d  
} pyA;%vJn  
int i1=l; 4%L`~J4 wr  
int i2=mid+1; * ^R?*vNs  
for(int cur=l;cur<=r;cur++){ o*OYZ/_L  
if(i1==mid+1) XO sPKq  
data[cur]=temp[i2++]; ` #Qlr+X  
else if(i2>r) !#0Lo->OO  
data[cur]=temp[i1++]; d?dZ=]~C  
else if(temp[i1] data[cur]=temp[i1++]; s=0z%~H  
else -*8|J;  
data[cur]=temp[i2++]; }Z5f5q  
} w"Gci~]bXU  
} ">='l9  
/wplP+w2  
} G gmv(!  
HGqT"N Jr  
改进后的归并排序: R;+vE'&CO  
KF^5 C  
package org.rut.util.algorithm.support; P]]re,&R  
jOL$kiW0  
import org.rut.util.algorithm.SortUtil; Q)eYJP=W  
'p3JYRT$  
/** ^ NZq1c  
* @author treeroot K|Sh  
* @since 2006-2-2 /VFh3n>I2  
* @version 1.0 o^P/ -&T  
*/ ZmSe>}B=  
public class ImprovedMergeSort implements SortUtil.Sort { 0mcZe5RS  
/NvHM$5O%  
private static final int THRESHOLD = 10; $#R@x.=  
Pn:L=*  
/* *o<zo `  
* (non-Javadoc) wlc Cz  
* gA 0:qEL\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F_>OpT  
*/ J3Ipk-'lx  
public void sort(int[] data) { OwhMtYq  
int[] temp=new int[data.length]; R42+^'af  
mergeSort(data,temp,0,data.length-1); pVgzUu7  
} ;a@%FWc  
u#9H  
private void mergeSort(int[] data, int[] temp, int l, int r) { tkT:5O6  
int i, j, k; zN2CI6  
int mid = (l + r) / 2; ~qFuS933  
if (l == r) gaFOm9y.e  
return; +T]/4"^M  
if ((mid - l) >= THRESHOLD) M7U:UV)  
mergeSort(data, temp, l, mid); BYjEo  
else J~.8.]gXW  
insertSort(data, l, mid - l + 1); DIrQ5C  
if ((r - mid) > THRESHOLD) 3 !W M'i  
mergeSort(data, temp, mid + 1, r); CK4C:`YG  
else TmI~P+5w  
insertSort(data, mid + 1, r - mid); \F`%vZrKR  
}HdibCAOf  
for (i = l; i <= mid; i++) { QD6<sw@]P  
temp = data; "u#,#z_  
} Zb> UY8  
for (j = 1; j <= r - mid; j++) { )fPN6x/e  
temp[r - j + 1] = data[j + mid]; /2 V  
} y5>X0tT  
int a = temp[l]; tf1iRXf8  
int b = temp[r]; 4:1URhE  
for (i = l, j = r, k = l; k <= r; k++) { Mn`);[  
if (a < b) { D^]g`V*N  
data[k] = temp[i++]; .|ZO2MCd  
a = temp; 1 Hw%DJ  
} else { [2h 4%{R&  
data[k] = temp[j--]; Sv&_LZ-"P  
b = temp[j]; =$kSvCjP  
} 2G=prS`s  
} y Skz5K+|g  
} GYp}V0  
l1_hD ,4  
/** {lv@V*_Y0  
* @param data jU~q~e7Te  
* @param l L !/Zw~  
* @param i K+HP2|#6  
*/ X*'i1)_h  
private void insertSort(int[] data, int start, int len) { P_(QG 6  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); },r9f MJ  
} _x+)Tv  
} JU>F&g/|  
} 'YFy6rds  
} +!"GYPUXy  
LN=6u  
堆排序: *;E\,,Io  
8.`*O  
package org.rut.util.algorithm.support; B EN U  
Q)mYy  
import org.rut.util.algorithm.SortUtil; TR7j`?  
Pk2=*{:W  
/** (:|g"8mQm  
* @author treeroot QOT|6)Yb  
* @since 2006-2-2 &/+LY_r'<I  
* @version 1.0 h*X5O h6  
*/ fYxdG|>{u  
public class HeapSort implements SortUtil.Sort{ BIQQJLu  
+f){x9 :  
/* (non-Javadoc) gUa-6@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W!Qaa(o?  
*/ h#:_GNuF  
public void sort(int[] data) { L!| `IK  
MaxHeap h=new MaxHeap(); 8'<RPU}M  
h.init(data); S {d]0  
for(int i=0;i h.remove(); (T65pP_P 7  
System.arraycopy(h.queue,1,data,0,data.length); ]a=n(`l?  
} lGhhH _  
uO^,N**R#  
private static class MaxHeap{ 7T69tQZ<  
xj< K6  
void init(int[] data){ jNbU{Z%r  
this.queue=new int[data.length+1]; ^55q~DP}>  
for(int i=0;i queue[++size]=data; 9*Z!=Y#4,  
fixUp(size); xI>HY9i )  
} <>shx;g^C  
} Pt=@U:  
/mK."5-cm  
private int size=0; .ri?p:a}w  
As>-9p>v  
private int[] queue; r"4&.&6  
e'dx Y(  
public int get() { ]H-5    
return queue[1]; P*!~Z *"  
} 9O4\DRe5c  
|s!<vvp]  
public void remove() { -`cNRd0n  
SortUtil.swap(queue,1,size--); Z,_EhEm  
fixDown(1); Y 8Dn&W  
} 7W.z8>p  
file://fixdown ]^>RBegJBO  
private void fixDown(int k) { \Dx5=Lh  
int j; E51'TT9  
while ((j = k << 1) <= size) { ;659E_y>  
if (j < size %26amp;%26amp; queue[j] j++; hd>_K*oH  
if (queue[k]>queue[j]) file://不用交换 =WEWs4V5A  
break; TQL_K8k@_  
SortUtil.swap(queue,j,k); P;bOtT --  
k = j; p!/ *(TT  
} .VA'W16  
} KN< KZM  
private void fixUp(int k) { tq.g4X ;_  
while (k > 1) { :"Gd;~p.  
int j = k >> 1; Sp-M:,H3H  
if (queue[j]>queue[k]) Yu+;vjbK-  
break; 19]O;  
SortUtil.swap(queue,j,k); *|B5,Ey  
k = j; gR 76g4|=;  
} u OB`A-K  
} 3kJ7aBiR<  
lz:+y/+1  
}  __Egr@  
YgLHp/  
} GswV/V+u  
p?,T%G+gqO  
SortUtil: N"Cd{3  
WqRaD=R->;  
package org.rut.util.algorithm; K<vb4!9Z9  
G\C>fwrP_  
import org.rut.util.algorithm.support.BubbleSort; 0?w4  
import org.rut.util.algorithm.support.HeapSort; @$7l  
import org.rut.util.algorithm.support.ImprovedMergeSort; O_P8OA#|  
import org.rut.util.algorithm.support.ImprovedQuickSort; fX/k;0l  
import org.rut.util.algorithm.support.InsertSort; QI4a@WB]ok  
import org.rut.util.algorithm.support.MergeSort; 91oAg[@4G  
import org.rut.util.algorithm.support.QuickSort; l<UJ@XID$  
import org.rut.util.algorithm.support.SelectionSort; F*_ytL  
import org.rut.util.algorithm.support.ShellSort; {1}p+dEK  
= KJ_LE~)  
/** |bX{MF  
* @author treeroot F3=iyiz6  
* @since 2006-2-2 }kF*I@:g  
* @version 1.0 mNQ*YCq.  
*/ 5;[h&jH  
public class SortUtil { "ZR^w5  
public final static int INSERT = 1; P"s7}cl  
public final static int BUBBLE = 2; nC@UK{tVa  
public final static int SELECTION = 3; xG8z4Yu   
public final static int SHELL = 4; EMw biGV  
public final static int QUICK = 5; fctVJ{?  
public final static int IMPROVED_QUICK = 6; V_P,~!  
public final static int MERGE = 7; /_ RrNzqy  
public final static int IMPROVED_MERGE = 8; t }>"nr0  
public final static int HEAP = 9; en8l:INX  
AkX8v66:  
public static void sort(int[] data) { NGAjajB  
sort(data, IMPROVED_QUICK); osPrr QoH  
} :rnj>U6<>  
private static String[] name={ s}Q*zy  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v]U0@#/p  
}; TIVrbO\!o  
nA.~}  
private static Sort[] impl=new Sort[]{ %)}y[ (  
new InsertSort(), pVC; ''E  
new BubbleSort(), ~IS3i'bh  
new SelectionSort(), ;hkzL_' E)  
new ShellSort(), !3Ed0h]Bfa  
new QuickSort(), 8gXf4A(N  
new ImprovedQuickSort(), +7$zL;ph=n  
new MergeSort(), e) kVS}e?  
new ImprovedMergeSort(), vFH1hm  
new HeapSort() P3+?gW'  
}; (T8dh|  
dL|*#e  
public static String toString(int algorithm){ f1RX`rXf  
return name[algorithm-1]; 4L/8Hj#g  
} (E<QA  
/u pDbP.O  
public static void sort(int[] data, int algorithm) { h%!N!\  
impl[algorithm-1].sort(data); YnwP\Arfq  
} i4\m/&of3y  
[8rl{~9E  
public static interface Sort { Y5\=5r/  
public void sort(int[] data); &BkdC,o  
} gB}UzEj^<  
$LJCup,1"  
public static void swap(int[] data, int i, int j) { b:YyzOqEu  
int temp = data; MzCZj  
data = data[j]; A9C  
data[j] = temp; #]e](j>]  
} ;`}b .S =n  
} $ v~I n  
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