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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。 0cq@lT6  
插入排序: Kd`(^  
a)JXxst  
package org.rut.util.algorithm.support; g[O?wH-a  
;Z d_2CZ  
import org.rut.util.algorithm.SortUtil; N $) G 8  
/** W5 F\e[Ax5  
* @author treeroot v 49o$s4J  
* @since 2006-2-2 RW L0@\  
* @version 1.0 ]=00<~ l*q  
*/ +-^>B%/&Z  
public class InsertSort implements SortUtil.Sort{ 2|,L 9  
Reikf}9Q  
/* (non-Javadoc) iPTQqx-m$7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dT|f<E/P  
*/ CaJ-oy8  
public void sort(int[] data) { P35DVKS  
int temp; |6*Bu1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Tu#;Y."T  
} X ."z+-eh  
} = ^NvUrK  
} bV8+E u  
%xg+UW }  
} \v Ajg  
R@\}iyM  
冒泡排序:  l(?B0  
_]`7et\=  
package org.rut.util.algorithm.support; [s>3xWZ+a  
fY!?rZ)$  
import org.rut.util.algorithm.SortUtil; ?{S>%P A_B  
.>B'oD  
/** 2!^=G=H/  
* @author treeroot 8%7%[WC#  
* @since 2006-2-2 &:&89<C'  
* @version 1.0 ?bB>}:~j)  
*/ `I5^zi8  
public class BubbleSort implements SortUtil.Sort{ =%X."i1A  
hpAdoy[  
/* (non-Javadoc) $N=&D_Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9GD0jJEu  
*/ I}4 PB+yu  
public void sort(int[] data) { Y@+Rb  
int temp; ;5j|B|v  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %":3xj'EEI  
if(data[j] SortUtil.swap(data,j,j-1); r<UVO$N  
} AHb_BgOU*  
} VL9wRu;  
} {]HiTpn  
} =Zq6iMD  
JI "/,fK^  
} y&NqVR=   
M~taZt4  
选择排序: )7>GXZG>=  
AByl1)r|  
package org.rut.util.algorithm.support; @t9HRL?T~  
^PZ[;F40  
import org.rut.util.algorithm.SortUtil; S<i$0p8J;  
rOSov"7  
/** m-AF&( ;K  
* @author treeroot x0 )V o]r  
* @since 2006-2-2 "I.6/9  
* @version 1.0 *-T.xo  
*/ cE]z Tu?!  
public class SelectionSort implements SortUtil.Sort {  =}`d  
E3uu vQ#|  
/* Je6[q  
* (non-Javadoc) QL/KY G  
* A[Mke  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t? GH V3V  
*/  Z1 D  
public void sort(int[] data) { u"v7shRp:  
int temp; O?e9wI=H  
for (int i = 0; i < data.length; i++) { tIuM9D{P  
int lowIndex = i; _?c.m*)A  
for (int j = data.length - 1; j > i; j--) { axC|,8~tq  
if (data[j] < data[lowIndex]) { ,;g%/6X  
lowIndex = j; 1sqE/-v1_^  
} P(D>4/f3"  
} rnIj pc F  
SortUtil.swap(data,i,lowIndex); LZykc c9g  
} OyTK,i<n  
} -r\jIO_  
+4?Lwp'q  
} {iD/0q  
C >*z^6Gz  
Shell排序: `OfhzOp  
NL9.J @"b  
package org.rut.util.algorithm.support; \o>-L\`O  
C]ss'  
import org.rut.util.algorithm.SortUtil; b"I#\;Ym  
M)bQvjj  
/** cgb>Naa<  
* @author treeroot h.\I tK{)  
* @since 2006-2-2 "DW~E\Y  
* @version 1.0 l9.`2d]o  
*/ 46C%at M0}  
public class ShellSort implements SortUtil.Sort{ ._}}@V_/  
LqWiw24#  
/* (non-Javadoc) WcN4ff-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :aNjh  
*/ -<g9 ) CV5  
public void sort(int[] data) { (p{X.X+  
for(int i=data.length/2;i>2;i/=2){ )d3 09O  
for(int j=0;j insertSort(data,j,i); 0+>g/ >  
} `d_T3^ayu  
} 'Ea3(OsuXn  
insertSort(data,0,1); fCY|iO0.t  
} n8,%<!F^  
Px_8lB/;  
/** C[^VM$  
* @param data lJK]S=cd  
* @param j #HcQ*BiF3  
* @param i ,P~e)<.  
*/ J}V4.R5d  
private void insertSort(int[] data, int start, int inc) { aq?bI:>8  
int temp; 9)!Ks g(h  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); AwJg/VBo)  
} 8SjCU+V  
} Id=20og  
} iJTG +gx  
 /~"-q  
} .eJKIck  
i /X3k&  
快速排序: %KyZ15_(-L  
xg p)G!  
package org.rut.util.algorithm.support; 4&*lpl*N  
y_WC"  
import org.rut.util.algorithm.SortUtil; Oc)n,D)0  
ufL,K q4  
/** g#I`P&  
* @author treeroot ;j0.#P:a  
* @since 2006-2-2 ().C  
* @version 1.0 khX/xL  
*/ stw@@GQ  
public class QuickSort implements SortUtil.Sort{ 0}i 9`p  
lU1SN/'zx  
/* (non-Javadoc) +Nn >*sz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >@N.jw>#T  
*/ eu(Fhs   
public void sort(int[] data) { ]5'*^rz ^  
quickSort(data,0,data.length-1); _c]}m3/  
} =-dnniKW4  
private void quickSort(int[] data,int i,int j){ DFr$2Y3H  
int pivotIndex=(i+j)/2; Jk.x^  
file://swap amsl>wc!  
SortUtil.swap(data,pivotIndex,j); 11PL1zzH  
Vz mlKVE  
int k=partition(data,i-1,j,data[j]); %<yW(s9{  
SortUtil.swap(data,k,j); r`"_D%kc  
if((k-i)>1) quickSort(data,i,k-1); ev&l=(hY  
if((j-k)>1) quickSort(data,k+1,j); Rxy|Ag/I;V  
kH 9k<{  
} rVabkwYD  
/** M>k&WtqK  
* @param data  U#f*  
* @param i Zl5DlRuw  
* @param j L`t786 (M  
* @return )QAYjW!Z  
*/ lr&2,p<  
private int partition(int[] data, int l, int r,int pivot) { AG >D,6Y  
do{ ~criZI/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); X0*+]tRg  
SortUtil.swap(data,l,r); orJ|Q3c)d  
} hTBJ\1 -  
while(l SortUtil.swap(data,l,r); {JWixbA  
return l; T)tr"<F5NP  
} [)`*k#.=  
RrLiH>  
} 8mr fs%_  
6Emn@Mn=  
改进后的快速排序: uNf'Zeo  
c:${qY:!  
package org.rut.util.algorithm.support; rT="ciQ  
,I iKe_B  
import org.rut.util.algorithm.SortUtil; u&y> '  
-IIrrY O  
/** ^aaj=p:c V  
* @author treeroot 4H;g"nWqO  
* @since 2006-2-2 `_ ^I 2  
* @version 1.0 P#pb48^-  
*/ @#wG)TA  
public class ImprovedQuickSort implements SortUtil.Sort { HtN: v  
eHx {[J?  
private static int MAX_STACK_SIZE=4096;  o]0E  
private static int THRESHOLD=10; B)k/]vz)*D  
/* (non-Javadoc) H8HH) ^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e\z,^  
*/ }5EH67  
public void sort(int[] data) { 0yjYjIk"T  
int[] stack=new int[MAX_STACK_SIZE]; A7QT4h&6  
F]OWqUV  
int top=-1; K`=U5vG^  
int pivot; xgOt%7sb  
int pivotIndex,l,r; "4XjABJ4'  
~U<j_j)z4.  
stack[++top]=0; #cR5k@  
stack[++top]=data.length-1; 41R~.?  
""`z3-  
while(top>0){ qA}l[:F+#  
int j=stack[top--]; S*r }oX0  
int i=stack[top--]; dhLd2WSyH  
tT`S" 9T  
pivotIndex=(i+j)/2; aaVq>$G 3  
pivot=data[pivotIndex]; .WglLUJ:Z  
L <  
SortUtil.swap(data,pivotIndex,j); "P5,p"k:)  
.==c~>N  
file://partition `~axOp9N  
l=i-1; .9DhD=8aIO  
r=j; , -])[u  
do{ JNU9RxR  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); u}'m7|)8  
SortUtil.swap(data,l,r); yJx,4be  
} %5ov!nm7  
while(l SortUtil.swap(data,l,r); } %3;j5 ;6  
SortUtil.swap(data,l,j); ,9OER!$y  
N#J8 4i;ry  
if((l-i)>THRESHOLD){ :4:U\k;QwA  
stack[++top]=i; 6hcs )X7m  
stack[++top]=l-1; #E4oq9{0*W  
} Z'AjeZyyE  
if((j-l)>THRESHOLD){ TGpdl`k\T  
stack[++top]=l+1; =)#XZ[#F  
stack[++top]=j; '<"%>-^Gn  
} *<9M|H~  
SOD3MsAK  
} $hM9{  
file://new InsertSort().sort(data); Kd}%%L  
insertSort(data); .Sm 8t$  
} z#5qI',L  
/** rl"yE=  
* @param data x!4<ff.  
*/ 2Z(?pJyDM  
private void insertSort(int[] data) { _Wp, z`  
int temp; Nj;(QhYZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m=`V  
} j1JdG<n  
} \KEmfCx'n  
} r*7J#M /  
SM}& @cJ  
} H2_6m5[&,  
&sq q+&ao  
归并排序: c:DV8'fT  
787i4h:71  
package org.rut.util.algorithm.support; ?r0>HvUf!l  
ylmVmHmc  
import org.rut.util.algorithm.SortUtil; * se),CP!s  
UuJ gB)  
/** Dhft[mvo  
* @author treeroot <SRSJJR|(  
* @since 2006-2-2 Ze`ms96j{  
* @version 1.0 m,J9:S<5;  
*/ FOa2VP%  
public class MergeSort implements SortUtil.Sort{ s 4 Uk5<  
neWx-O  
/* (non-Javadoc) Dk~ JH9#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?f6Fj  
*/ P+p:Ed 80  
public void sort(int[] data) { G!GGT?J  
int[] temp=new int[data.length]; }g.)%Bw!  
mergeSort(data,temp,0,data.length-1); ovtZHq/  
} M4XU*piz  
btf]~YN  
private void mergeSort(int[] data,int[] temp,int l,int r){ bmC{d  
int mid=(l+r)/2; l%cE o`U  
if(l==r) return ; A*{V%7hs&  
mergeSort(data,temp,l,mid); M/6q ^*  
mergeSort(data,temp,mid+1,r); h>NuQo*  
for(int i=l;i<=r;i++){ *fDhNmQ `  
temp=data; ]T<RC\o  
} :as2fO$?  
int i1=l; i/DUB<>p6  
int i2=mid+1; B?XqH_=0L  
for(int cur=l;cur<=r;cur++){ ^@maF<Jb  
if(i1==mid+1) G{s q|1  
data[cur]=temp[i2++]; m!<uY?,hf  
else if(i2>r) w##$SaTI  
data[cur]=temp[i1++]; 9H%L;C5<  
else if(temp[i1] data[cur]=temp[i1++]; Ut"F b  
else :jWQev"/  
data[cur]=temp[i2++]; :2&W9v  
} ma2-66M~j  
} _nW#Cl~  
LwCf}4u"  
} M[dJQ (  
r/ LgmVRn  
改进后的归并排序: tw]Q5:6  
\g;-q9g;O  
package org.rut.util.algorithm.support; A3e83g~L  
9<!Ie^o?  
import org.rut.util.algorithm.SortUtil; )e\IdKl=  
!vSj1w  
/** dBp)6ok#c  
* @author treeroot i\k>2df  
* @since 2006-2-2 )6-!,D0db  
* @version 1.0 p?sC</R  
*/ IsiCHtY9  
public class ImprovedMergeSort implements SortUtil.Sort { %wux#"8  
=qTmFszT  
private static final int THRESHOLD = 10; <bOi}  
z)y{(gR  
/* -6>T0-  
* (non-Javadoc) 7%^ /Jm  
* OM7EmMa;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u"1Zv!  
*/ Hk|wO:7Be  
public void sort(int[] data) { +dSO?Y]  
int[] temp=new int[data.length]; ??`z W  
mergeSort(data,temp,0,data.length-1); DlbNW& V  
} _0e;&2')  
<@2g.+9  
private void mergeSort(int[] data, int[] temp, int l, int r) { 3At%TA:  
int i, j, k; %FO# j6  
int mid = (l + r) / 2; Tf?|*P  
if (l == r) 3It9|Y"6[  
return; 'e06QMp@  
if ((mid - l) >= THRESHOLD) C.;H?So(  
mergeSort(data, temp, l, mid); p{4nWeH?B  
else p!3!&{  
insertSort(data, l, mid - l + 1); Vq<\ix Ri  
if ((r - mid) > THRESHOLD) 2i_k$-  
mergeSort(data, temp, mid + 1, r); 5QUL-*t  
else nhPua&  
insertSort(data, mid + 1, r - mid); ,O/ t6'  
$Q< >M B7  
for (i = l; i <= mid; i++) { N3g\X  
temp = data; 5ki<1{aVtZ  
} KI{B<S3*Z  
for (j = 1; j <= r - mid; j++) { [oh0 )wzB  
temp[r - j + 1] = data[j + mid]; E#m|Sq  
} RW04>oxVn  
int a = temp[l]; wm/=]*jpK  
int b = temp[r]; h"DxgG  
for (i = l, j = r, k = l; k <= r; k++) { 1x~dsM;q  
if (a < b) { a6i%7Om  
data[k] = temp[i++]; 1MnT*w   
a = temp; jou741  
} else { tjTnFP/=  
data[k] = temp[j--]; pw5uH  
b = temp[j]; %ryYa  
} YRm6~c  
} E1-BB  
} m3i+b  
7$u}uv`j  
/** %d#h<e|,.  
* @param data -kz9KGkPb+  
* @param l U}2b{  
* @param i &;]KntxB  
*/ h#7p&F  
private void insertSort(int[] data, int start, int len) { Doj>Irj? 7  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nL@(|nJ[  
} j!<(`  
} J}'a|a@bk  
} X1PXX!]lo[  
} =9AX\2w*H;  
~dc~<hK  
堆排序: W2F*+M  
#XPY\n^k  
package org.rut.util.algorithm.support; 7dbGUbT  
?(d<n   
import org.rut.util.algorithm.SortUtil; (6#, $Ze   
YZyV   
/** -\V!f6Q  
* @author treeroot ,`O.0e4pn  
* @since 2006-2-2 QpZ CU]  
* @version 1.0 dF<GuS;l5  
*/ -- chU5  
public class HeapSort implements SortUtil.Sort{ +1o4l i  
T>2_r6;  
/* (non-Javadoc) `8sC>)lrwu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]d]rV `RF  
*/ 3q*p#l~  
public void sort(int[] data) { Uop`)  
MaxHeap h=new MaxHeap(); sOUQd-!"  
h.init(data); nWz7$O  
for(int i=0;i h.remove(); ;S.o` z1GI  
System.arraycopy(h.queue,1,data,0,data.length); oDBv5  
} +zf[Im%E  
GLE/ 1  
private static class MaxHeap{ b>Em~NMu_  
/_l$h_{DH  
void init(int[] data){ AkE(I16Uy~  
this.queue=new int[data.length+1]; bs9X4n5  
for(int i=0;i queue[++size]=data; ?|NMJ Qsa7  
fixUp(size); GI _.[  
} }s++^uX6  
} e"O c  
<*F!A' w2o  
private int size=0; v%$c_'d  
a*(,ydF|L  
private int[] queue; {|D7H=f  
8%Eau wAx  
public int get() { ]u<8j r  
return queue[1]; )~[rb<:)b  
}  :qe.*\ c  
BDiN*.w5  
public void remove() { EwX:^1f  
SortUtil.swap(queue,1,size--); VkJBqRzBOa  
fixDown(1); JK y0 6I  
} f5o##ia7:  
file://fixdown @D@_PA)e(  
private void fixDown(int k) { cy @",z  
int j; %-J} m  
while ((j = k << 1) <= size) { ;:A/WU.^  
if (j < size %26amp;%26amp; queue[j] j++; 3s B9t X  
if (queue[k]>queue[j]) file://不用交换 VSLi{=#  
break; k|D =Q  
SortUtil.swap(queue,j,k); ,|G~PC8  
k = j; I:Q3r"1  
} cfhiZ~."T  
} !l5&>1?  
private void fixUp(int k) { '}BYMEd/m%  
while (k > 1) { N,ysv/zq7  
int j = k >> 1; -4!S?rHwd+  
if (queue[j]>queue[k]) Nm4 h  
break; NPjNkpWm&=  
SortUtil.swap(queue,j,k); }$X/HK  
k = j; &X&msEM  
}  ;U<}2M!g  
} cl1>S3  
Or<OmxJg  
} oj%(@6L  
GX0S9s  
} K$kI%eGZA  
:xy4JRcF  
SortUtil: `*-rz<G  
mGP&NOR0^y  
package org.rut.util.algorithm; >\4"k4d}  
R8N*. [  
import org.rut.util.algorithm.support.BubbleSort; O f.%rpgy  
import org.rut.util.algorithm.support.HeapSort; bBg=X}9  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7Q>bJ Ek7  
import org.rut.util.algorithm.support.ImprovedQuickSort; _?rL7oTv  
import org.rut.util.algorithm.support.InsertSort; 94Q?)0W$  
import org.rut.util.algorithm.support.MergeSort; *w5xC5*  
import org.rut.util.algorithm.support.QuickSort; *wp>a?sG\  
import org.rut.util.algorithm.support.SelectionSort; _Y _v&  
import org.rut.util.algorithm.support.ShellSort; C2(VYw  
wzf%~ats  
/** L<W2a(  
* @author treeroot &<oJw TC  
* @since 2006-2-2 ywY[g{4+  
* @version 1.0 |!hN!j*)  
*/ + C'<*  
public class SortUtil { Lm1  -  
public final static int INSERT = 1; ESi'3mbeC  
public final static int BUBBLE = 2; /Xf_b.ZM&  
public final static int SELECTION = 3; #fT<]j(  
public final static int SHELL = 4; zTS P8Q7  
public final static int QUICK = 5; hmp!|Q[)  
public final static int IMPROVED_QUICK = 6; *iiyU}x  
public final static int MERGE = 7; /5N`E uw  
public final static int IMPROVED_MERGE = 8; p,K!'\  
public final static int HEAP = 9; JDP/vNq  
(,^jgv|I  
public static void sort(int[] data) { `BzjDI:a  
sort(data, IMPROVED_QUICK); _;'<}a  
} hF`Qs  
private static String[] name={ K'U8ft*_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2}0S%R(  
}; /vNHb _-  
hp3 <HUU  
private static Sort[] impl=new Sort[]{ hOj(*7__  
new InsertSort(), O/Mx $Q3re  
new BubbleSort(), JyDg=%-$2  
new SelectionSort(), V)jF]u~g  
new ShellSort(), E'+?7ZGWj  
new QuickSort(), Zonr/sA~  
new ImprovedQuickSort(), Xv2Q8-}w  
new MergeSort(), 8>AST,  
new ImprovedMergeSort(), V(wANvH  
new HeapSort() 'dJ(x  
}; 0HPqoen$  
bwyj[:6l  
public static String toString(int algorithm){ lN~u='Kc  
return name[algorithm-1]; pE381Cw  
} nA#N,^Rr  
<`")Zxf+  
public static void sort(int[] data, int algorithm) { &`I7aP|  
impl[algorithm-1].sort(data); ]=]fIKd  
} 3A!Qu$r9  
R "qt}4m  
public static interface Sort { H6Q!~o\"H  
public void sort(int[] data); K+3+?oYKH  
} } e]tn)  
|32uC3?o  
public static void swap(int[] data, int i, int j) { 2g HRfTF  
int temp = data; YckLz01jh  
data = data[j]; )R6-]TkA_  
data[j] = temp; $0&<Jx  
} l]~mB~  
} 71G\b|5  
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