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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。 ae( o:G  
插入排序: \Fj$^I>C  
L,V\g^4$K  
package org.rut.util.algorithm.support; <Hl.MS  
v.H00}[.  
import org.rut.util.algorithm.SortUtil; Wfgs[  
/** 4ihv|%@  
* @author treeroot udM<jY]5p  
* @since 2006-2-2 XZhuV<  
* @version 1.0 iZ2|/hnw  
*/ &S9Sl  
public class InsertSort implements SortUtil.Sort{ 9cud CF  
,2S w6u  
/* (non-Javadoc) j+NOT`&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (( F[]<?  
*/ )| @'}k+  
public void sort(int[] data) { Ol3$!x9  
int temp; B;?)   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X(kyu,w  
} O0Y/y2d  
} @SeE,<  
} j4Ppn  
o^%4w>|  
} Q.Uyl:^PxU  
y)o!F^  
冒泡排序: I)I,{xT4  
i&\N_PUm[  
package org.rut.util.algorithm.support; pB;)H ii\  
.dwb@$  
import org.rut.util.algorithm.SortUtil; +"rZ<i  
LM }0QL m?  
/** *&{M ,  
* @author treeroot eU?SLIof[{  
* @since 2006-2-2 JnE\E(ez  
* @version 1.0 .q#2 op  
*/ hGyi@0  
public class BubbleSort implements SortUtil.Sort{ T<kyxbjR  
JTB_-J-TU  
/* (non-Javadoc) )]~'zOE_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m, ',luQ  
*/ j/_@~MJBt  
public void sort(int[] data) { iHhoNv`MR  
int temp; i{TErJ{}e  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "?a(JC  
if(data[j] SortUtil.swap(data,j,j-1); Rdao  
} Z'p7I}-qr  
} } <; y,4f  
} ?LAKH$t  
} G>f-w F6  
;hU56lfZ)X  
} 9v&{; %U  
?<VahDBS+A  
选择排序: f@Mm{3&.  
V4'G%!NY  
package org.rut.util.algorithm.support; e 5U<nf  
VOH.EK?5  
import org.rut.util.algorithm.SortUtil; l&cYN2T b  
BtDi$d%'  
/** sr,8zKM)  
* @author treeroot `P}T{!P+6  
* @since 2006-2-2 %cJ]Ds%V  
* @version 1.0 @q2If{Tk  
*/ ]>-#T  
public class SelectionSort implements SortUtil.Sort { EdxTaR  
zS*GYE(l^  
/* ~t\Hb8o  
* (non-Javadoc) BoJ@bOe#  
* K~8;wDN`b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Ija,C!#  
*/ mwLp~z%OX  
public void sort(int[] data) { OO5k _J  
int temp; wjYwQ=y5  
for (int i = 0; i < data.length; i++) { 6?OH"!b2-}  
int lowIndex = i; H)aeS F5  
for (int j = data.length - 1; j > i; j--) { GPnd7}Tn  
if (data[j] < data[lowIndex]) { HT7V} UiaO  
lowIndex = j; C(7uvQ  
} xb$eFiQ  
} +V*FFv  
SortUtil.swap(data,i,lowIndex); Un\h[m  
} ;(M`Wy]2  
} Z|+SC \Y  
`vWFTv  
} xq1 =O  
"2:]9j  
Shell排序: VKRj 1LXz  
kK+ <n8R2  
package org.rut.util.algorithm.support; /]4[b!OTJ  
Cn4o^6?"  
import org.rut.util.algorithm.SortUtil; eKV^ia  
44axOk!G[/  
/** TIlBT{A<  
* @author treeroot b?`8-g  
* @since 2006-2-2 z1A[rbe=4w  
* @version 1.0 &scHyt  
*/ Qk?;nF  
public class ShellSort implements SortUtil.Sort{ (5S(CYls  
p\5DW'  
/* (non-Javadoc) ilL] pU-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A`2l;MW  
*/ ~9#[\/;"  
public void sort(int[] data) { X& EcQ  
for(int i=data.length/2;i>2;i/=2){ o(5Xj$Z  
for(int j=0;j insertSort(data,j,i); PK^{WF}L;  
} ^Z]1Z  
} dE9xan  
insertSort(data,0,1); N9IBw',  
} WF#eqU*&  
FaO=<jYi  
/** HVG9 C$  
* @param data AK%2#}k.  
* @param j FaO1?.  
* @param i VaQqi>;\  
*/ to@ O  
private void insertSort(int[] data, int start, int inc) { G3vKA&KZ  
int temp; zTb!$8D"g  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); pcIJija:  
} v~i/e+.h>y  
} Qm86!(eZ-  
} m/l#hp+  
,&$=2<Dx  
} sp*_;h3'  
{iiHeSD  
快速排序: jeM %XI  
3gZ|^h6 +  
package org.rut.util.algorithm.support; |4NH}XVYJ>  
d7Lna^  
import org.rut.util.algorithm.SortUtil; F.ml]k&(m  
n]G!@-z  
/** =w='qjh  
* @author treeroot h;105$E1  
* @since 2006-2-2 bp Q/#\Z  
* @version 1.0 >]uV  
*/ |~vo  
public class QuickSort implements SortUtil.Sort{ 1?s]nU  
:X7"fX  
/* (non-Javadoc) D> wq4u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t~m >\(&  
*/ V"=(I'X  
public void sort(int[] data) { pX3Q@3,$  
quickSort(data,0,data.length-1); mEsOYIu{  
} Nb/W+& y  
private void quickSort(int[] data,int i,int j){ f,{O%*PUA  
int pivotIndex=(i+j)/2; E'qGKT  
file://swap >g8H  
SortUtil.swap(data,pivotIndex,j); D.?Rc'y D  
:^".cs?g  
int k=partition(data,i-1,j,data[j]); luD.3&0n  
SortUtil.swap(data,k,j); W.b?MPy]  
if((k-i)>1) quickSort(data,i,k-1); ^6Y4=  
if((j-k)>1) quickSort(data,k+1,j); $w{!}U2+-  
x#z}A&  
} (bnyT?p%  
/** Z}74% 9qE  
* @param data )`5k fj  
* @param i YSi[s*.G  
* @param j _(=[d  
* @return w_o|k&~,  
*/ ?g*#l d()  
private int partition(int[] data, int l, int r,int pivot) { 3B|?{U~  
do{ y7J2: /@[x  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $S{B{FK  
SortUtil.swap(data,l,r); -7^?40A  
} KDD_WXGt~  
while(l SortUtil.swap(data,l,r); 04{*iS95J  
return l; p&'oJy.P  
} e@[9WnxYe  
&qfnCM0Y  
} ?CSc5b`eo  
LJ7Qwh_",  
改进后的快速排序: 3 D<s #  
#P[d?pY  
package org.rut.util.algorithm.support; O_@  
WN8XiV  
import org.rut.util.algorithm.SortUtil; ,m<t/@^]  
UzZzt$Kw  
/** VB x,q3.  
* @author treeroot ]7SX _:'*  
* @since 2006-2-2 HPM ggRs  
* @version 1.0 y" 4Nw]kU  
*/ ;Y<Hi\2oy  
public class ImprovedQuickSort implements SortUtil.Sort { ^id9_RU   
Ak(_![Q:q\  
private static int MAX_STACK_SIZE=4096; >jI( ^8?  
private static int THRESHOLD=10; yTj!(C  
/* (non-Javadoc) .Y!] {c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p'PHBb8I  
*/ rGjP|v@3^  
public void sort(int[] data) { iDp'M`(6h  
int[] stack=new int[MAX_STACK_SIZE]; uLok0"}  
@uru4>1_dy  
int top=-1; t+C9QXY  
int pivot; c@p4,G  
int pivotIndex,l,r; 3/+r*lv>X  
qfF/X"#0  
stack[++top]=0; l ~b  
stack[++top]=data.length-1; s)gUvS\  
2H h5gD|>  
while(top>0){ z5V~m_RO  
int j=stack[top--]; Thlqe?  
int i=stack[top--]; e`N/3q7  
Tz PG(f  
pivotIndex=(i+j)/2; 6RA4@bIG  
pivot=data[pivotIndex]; 5<Lal^c D  
PVNDvUce  
SortUtil.swap(data,pivotIndex,j); ~>j5z&:&  
O]| T !  
file://partition c.<bz  
l=i-1; %%7~<=rk  
r=j; z 1~2w:  
do{ rw9m+q  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); B7y^)/  
SortUtil.swap(data,l,r); PP]Z~ne0X  
} V2v}F=  
while(l SortUtil.swap(data,l,r); GL S`1!  
SortUtil.swap(data,l,j); bL6, fUS  
` oPUf!  
if((l-i)>THRESHOLD){ pA~eGar_J  
stack[++top]=i; _? aI/D  
stack[++top]=l-1;  D|8Pe{`  
} =!V-V}KK-  
if((j-l)>THRESHOLD){ `dGcjLs Iz  
stack[++top]=l+1; R&!{3!V  
stack[++top]=j; -45xa$vv  
} 9i8 ~  
,; 81FK  
} x_k @hGSC  
file://new InsertSort().sort(data);  x%$as;  
insertSort(data); o 9?#;B$  
} `P(Otr[6  
/** v 7g?  
* @param data K:<0!C!  
*/  ~T'!.^/  
private void insertSort(int[] data) { I<&(Dg|XQ  
int temp; Ok*aP+Wq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =Zt7}V  
} K+F]a]kld  
} A4|L;z/A[h  
} (Y[q2b  
1dE |q{  
} Jh6 z5xUV  
~4}'R_  
归并排序: 7hq$vI%0  
/,`40^U}  
package org.rut.util.algorithm.support; |s}7<A  
Y!0ZwwW  
import org.rut.util.algorithm.SortUtil; )LRso>iOO  
V']{n7a-  
/** 'v42QJ"{  
* @author treeroot wV& UB@  
* @since 2006-2-2 xUw)mUn@N  
* @version 1.0 0DR:qw  
*/ RY\[[eG  
public class MergeSort implements SortUtil.Sort{ ndB [f  
:OFL@byS  
/* (non-Javadoc) 1#OM~v6B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K[G=J  
*/ F2bAo6~R  
public void sort(int[] data) { S(Ej: H  
int[] temp=new int[data.length]; Q9C; _Up  
mergeSort(data,temp,0,data.length-1); &nXa /XIZ_  
} Obl,Qa:5  
-$0w-M8'  
private void mergeSort(int[] data,int[] temp,int l,int r){ JPt0k  
int mid=(l+r)/2; {B d 0  
if(l==r) return ; /CT g3Q"KQ  
mergeSort(data,temp,l,mid); P m}  
mergeSort(data,temp,mid+1,r); + NpH k  
for(int i=l;i<=r;i++){ fg8"fbG`:  
temp=data; 6%8,OOS  
} ]>%M%B  
int i1=l; >kN%R8*Sx  
int i2=mid+1; qyl9#C(a  
for(int cur=l;cur<=r;cur++){ +:#x!i;W8[  
if(i1==mid+1) rERHfr`OU  
data[cur]=temp[i2++]; g,,'Pdd7Pn  
else if(i2>r) "7RnT3  
data[cur]=temp[i1++]; zwEZ?m!  
else if(temp[i1] data[cur]=temp[i1++]; r:QLO~l/  
else Z8yt8O  
data[cur]=temp[i2++]; O*%@(w6  
} re-;s  
} 4#c-?mh_  
DGY?4r7>y  
} m0(]%Kdw  
b+rn:R  
改进后的归并排序: LE1#pB3TG  
x6BO%1  
package org.rut.util.algorithm.support; cIJqF.k  
x_K8Gr#Z0  
import org.rut.util.algorithm.SortUtil; aVXk8zuL  
%l.5c Sn@  
/** zQNkjQ{mx  
* @author treeroot ztRe\(9bL  
* @since 2006-2-2 W? ^ ?Kx  
* @version 1.0 3gcDc~~=  
*/ SJXA  
public class ImprovedMergeSort implements SortUtil.Sort { Z<2j#rd  
btV Tt5  
private static final int THRESHOLD = 10; NUvHY:  
q]qKU`m!Q`  
/* h jCkj(b  
* (non-Javadoc) ^ rB7&96C,  
* D')m8:>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i4XE26B;e  
*/  erW[q  
public void sort(int[] data) { C72!::o  
int[] temp=new int[data.length]; lNQ8$b  
mergeSort(data,temp,0,data.length-1); `7))[._  
} PU\?eA  
r-,P  
private void mergeSort(int[] data, int[] temp, int l, int r) { Y4 <  
int i, j, k; }0 BKKU+  
int mid = (l + r) / 2; H1bPNt63  
if (l == r) (i"@{[IP  
return;  >>nt3q  
if ((mid - l) >= THRESHOLD) uoIvFcb^  
mergeSort(data, temp, l, mid); Y9K$6lz  
else NdlJdq  
insertSort(data, l, mid - l + 1); dg?[gD8!4&  
if ((r - mid) > THRESHOLD) h ?Ni5  
mergeSort(data, temp, mid + 1, r); 1syI%I1  
else !RJuH;8  
insertSort(data, mid + 1, r - mid); mqx#N%  
fF\s5f#:  
for (i = l; i <= mid; i++) { ~G;lEp  
temp = data; 0CTUcVM#9  
} eVVm"96Q.;  
for (j = 1; j <= r - mid; j++) { ZMI!Sl  
temp[r - j + 1] = data[j + mid]; t.7KS:  
} 7E-1 #4  
int a = temp[l]; b&i0)/;  
int b = temp[r]; _2wU(XYH  
for (i = l, j = r, k = l; k <= r; k++) { +-VkRr#  
if (a < b) { is2OJ,  
data[k] = temp[i++]; +] .Zs<  
a = temp; Wd R~  
} else { I`~ofq?r  
data[k] = temp[j--]; p7\}X.L  
b = temp[j]; &6yh4-(7  
} lhyWlO  
} YCWt%a*I'  
} Q}A*{9#|  
^o*$OM7x  
/** L*rND15  
* @param data +~E;x1&'  
* @param l G<S(P@ss  
* @param i 3Pj 6(cf  
*/ 6zJ<27  
private void insertSort(int[] data, int start, int len) { " ^t3VjN  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &<s[(w!%%  
} ;{zgp  
} h=fzX .dt  
} .??[qBOTE  
} J`&*r;""V  
O,&nCxB]  
堆排序: vp"b_x1-  
Z|8oD*,  
package org.rut.util.algorithm.support; *~t&Ux#hj  
^F>C|FJ2  
import org.rut.util.algorithm.SortUtil; ot"3 3I  
) r8yt}  
/** *gq~~(jH  
* @author treeroot B.e3IM0  
* @since 2006-2-2 -2{NIF^H  
* @version 1.0 n#{z"G  
*/ <"93  
public class HeapSort implements SortUtil.Sort{ D8`dEB2|S  
P6n9yJ$,cb  
/* (non-Javadoc) 69z,_p$@:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Kx@ 2#~b  
*/ !9B`  
public void sort(int[] data) { #s4v0auK  
MaxHeap h=new MaxHeap(); (}]ae*  
h.init(data); Gu3# y"a>  
for(int i=0;i h.remove(); {Qe 7/ln!  
System.arraycopy(h.queue,1,data,0,data.length); zNZ"PYh<u  
} Kx-s95t  
XLog+F$`  
private static class MaxHeap{ yX-h|Cr"  
%\ifnIQ  
void init(int[] data){ u%o2BLx  
this.queue=new int[data.length+1]; \Ax[/J2aO  
for(int i=0;i queue[++size]=data; ;tBc&LJ?  
fixUp(size); aSN"MTw.  
} ,?'":T1[  
} qs["&\@  
>~nc7j u  
private int size=0; f  _ O  
c]u^0X?&  
private int[] queue; ?`,Rkg0fe  
U2lDTRt  
public int get() { i^i^g5l!  
return queue[1]; VGHy|5K$  
} eJ=K*t|  
\Y>!vh X  
public void remove() { %[ Z[  
SortUtil.swap(queue,1,size--); lZt{L0  
fixDown(1); NoR=:Q 9e  
} jt*VD>ji  
file://fixdown &!adW@y  
private void fixDown(int k) { ggy 7p44  
int j; |JR;E$  
while ((j = k << 1) <= size) { f&n6;N  
if (j < size %26amp;%26amp; queue[j] j++; p^E}%0#  
if (queue[k]>queue[j]) file://不用交换 -F]0Py8(  
break; y [pU8QSt  
SortUtil.swap(queue,j,k); |%i|P)]  
k = j; M)<4|x  
} >h[ {_+  
} {m<NPtp910  
private void fixUp(int k) { k=7+JI"J  
while (k > 1) { _YT9zG  
int j = k >> 1; ? >\JX  
if (queue[j]>queue[k]) HxH.=M8S_  
break; zRz7*o&l  
SortUtil.swap(queue,j,k); @S-p[u  
k = j; B!z-O*fLE1  
} ff1Em.  
} /.Fvl;!J;  
Mzbbr57n  
} |, Lp1  
~<)CI0=  
} 7p!w(N?s  
#U=}Pv~wM  
SortUtil: f:).wi Ld  
<f')]  
package org.rut.util.algorithm; ?puZqVu5  
c^$+=-G{fd  
import org.rut.util.algorithm.support.BubbleSort; IIrXI8'}  
import org.rut.util.algorithm.support.HeapSort; L, k\`9bQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; p?#cn   
import org.rut.util.algorithm.support.ImprovedQuickSort; }'FNGn.~#  
import org.rut.util.algorithm.support.InsertSort; .ZB/!WiF  
import org.rut.util.algorithm.support.MergeSort; jW?siQO^  
import org.rut.util.algorithm.support.QuickSort; b')Lj]%;k  
import org.rut.util.algorithm.support.SelectionSort; Wb|xEwqd`  
import org.rut.util.algorithm.support.ShellSort; %U4w@jp  
Y?^1=9?6  
/** z ]d^%>Ef  
* @author treeroot [T5z}!_y  
* @since 2006-2-2  <0,szw  
* @version 1.0 _;M46o%h  
*/ w'Cn3b)`  
public class SortUtil { 1e0O-aT#Q  
public final static int INSERT = 1; a9OJC4\  
public final static int BUBBLE = 2; N~w4|q!]  
public final static int SELECTION = 3; +Y:L4`  
public final static int SHELL = 4; wl*"Vagb  
public final static int QUICK = 5; #kuk3}&  
public final static int IMPROVED_QUICK = 6; <Bmqox0  
public final static int MERGE = 7; )k@+8Yfa1p  
public final static int IMPROVED_MERGE = 8; 0Q]p#;  
public final static int HEAP = 9; +h*.%P}o  
`wyX)6A|bt  
public static void sort(int[] data) { Gob;dku  
sort(data, IMPROVED_QUICK); )ZU=`!4  
} .q>4?+  
private static String[] name={ w84 ] s%y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" T@GR Tg  
}; l<](8oc. w  
f> u{e~Q,  
private static Sort[] impl=new Sort[]{ GisI/Ir[  
new InsertSort(), A5lP%&tu(  
new BubbleSort(), 4zF|}aiQ  
new SelectionSort(), eBK s-2r  
new ShellSort(), #$vef  
new QuickSort(), i>Cxi ZT  
new ImprovedQuickSort(), I) $of9   
new MergeSort(), XZcT-w 7  
new ImprovedMergeSort(), HzO6hb{jJO  
new HeapSort() I82?sQ7  
}; !f(aWrw7e6  
! ~' \Ey  
public static String toString(int algorithm){ U`j[Ni}"  
return name[algorithm-1]; -jZP&8dPH  
} }T?MWcG4  
/S]W< 8d  
public static void sort(int[] data, int algorithm) { s[yIvlHw`  
impl[algorithm-1].sort(data); (1bz.N8z  
} hIj[#M&6  
9`8\<a'rU  
public static interface Sort { ." m6zq  
public void sort(int[] data); imx/hz!  
} ASuxty  
kT(}>=]g  
public static void swap(int[] data, int i, int j) { O<R6^0B42  
int temp = data; q%4l!gzF3  
data = data[j]; Z\=].[,w4  
data[j] = temp; Nxu 10  
} 9o.WJ   
} Lw=.LN  
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