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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。 <-d-. 8  
插入排序: <q MX,h2  
+Km xo4p  
package org.rut.util.algorithm.support; uA?a DjA  
}zo-%#  
import org.rut.util.algorithm.SortUtil; Z(E .F,k  
/** yl<=_Q  
* @author treeroot 9<Zm}PE32  
* @since 2006-2-2 M/[9ZgDc  
* @version 1.0 Q1h v2*/U  
*/ PVKq&Q?  
public class InsertSort implements SortUtil.Sort{ &=8ZGjR< }  
11J:>A5zt  
/* (non-Javadoc) #.j:P#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X7aj/:fXe  
*/ M~sP|Ha"+  
public void sort(int[] data) { 6yaWxpW  
int temp; OOsd*nX/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -r_Pp}s  
} ~O~we  
} m[5ed1+  
} Erl@] P4  
~"~uXNd  
} %MfT5*||f  
BD ,3JDqT  
冒泡排序: 51%<N\>/4  
D@mqfi(x  
package org.rut.util.algorithm.support; t/"9LMKs?  
[s!cc:JR  
import org.rut.util.algorithm.SortUtil; @iz6)2z  
Io;26F""  
/** 9/\=6v C|  
* @author treeroot i];@e]   
* @since 2006-2-2 X<"#=u(  
* @version 1.0 Bsz;GnD|r  
*/ Bq:: 5,v  
public class BubbleSort implements SortUtil.Sort{ 7"_g X  
=1kjKE !  
/* (non-Javadoc) 1n ZE9;o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0xutG/-&N  
*/ dZbG#4oO  
public void sort(int[] data) { *Oe;JqQkK  
int temp; 4gm(gY>[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ l\-(li H  
if(data[j] SortUtil.swap(data,j,j-1); r(=3yd/G$  
} }Sb&ux  
} u`X}AKC  
} Xp3cYS*u  
} Neb%D8/Kn  
|c>A3 P$=B  
} }%-`CJ,  
w3IU'(|G  
选择排序: u RNc9  
7~q'3 N  
package org.rut.util.algorithm.support; `S7${0e  
Ol@ YSkd  
import org.rut.util.algorithm.SortUtil; fx4X!(w!B  
pKSVT  
/** ?G-a:'1!6  
* @author treeroot 2? 7a\s  
* @since 2006-2-2 : XZ  
* @version 1.0 )Nq$~aAm  
*/ 9X{aU)"omQ  
public class SelectionSort implements SortUtil.Sort { Xl%&hM  
Z-j%``I?h  
/* {4{ACp  
* (non-Javadoc) s.I=H^ T  
* F3a"SKMW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hw/1~O$T  
*/ Z)(C7,Xu  
public void sort(int[] data) { C`x>)wm:  
int temp; Rf\>bI<.  
for (int i = 0; i < data.length; i++) { _hLM\L  
int lowIndex = i; D058=}^HE  
for (int j = data.length - 1; j > i; j--) { *$_<| g)9  
if (data[j] < data[lowIndex]) { L+QEFQ:r5  
lowIndex = j; fr\UX}o  
} e:.Xs  
} _"F(w"|  
SortUtil.swap(data,i,lowIndex); FUm-Fp  
} s4}}MV3X  
} v1zJr6ra9  
kF.PLn'iS  
} ou-5iH?  
/gHRJ$2|Sx  
Shell排序: -]PW\}w1  
J(-#(kMyf  
package org.rut.util.algorithm.support; diqG8KaK  
;LH?Qu;e  
import org.rut.util.algorithm.SortUtil; t/S~CIA  
4- 6'  
/** OY`G_=6!N  
* @author treeroot D9c8#k9Y.  
* @since 2006-2-2 E( *$wD  
* @version 1.0 dmrM %a}W-  
*/ m.EWYO0XQ  
public class ShellSort implements SortUtil.Sort{ m&|?mTo>m  
k2*^W&Z  
/* (non-Javadoc) F+Lq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~&4,w9b)j  
*/ .Fh5:W N  
public void sort(int[] data) { S` X;2\:  
for(int i=data.length/2;i>2;i/=2){ ?~S\^4]  
for(int j=0;j insertSort(data,j,i); kRE^G*?  
} j|HOry1E&  
} ^O[q C X  
insertSort(data,0,1); m2<sVTN`^  
} rMf& HX  
8u;l<^<  
/** |n67!1  
* @param data %t%+;(M9  
* @param j "PJ@Q9n__  
* @param i t]" 3vE>  
*/ i':<Ro  
private void insertSort(int[] data, int start, int inc) { O&\;BF5:R  
int temp; ga~rllm;i  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `<Zp!Hl(j  
} 0xC{Lf&  
} bv$)^  
} |'mgo  
zj`!ZY?fv  
} 1c+[S]7rY  
B7T(9Tj+Fh  
快速排序: .azdAq'r&\  
A^ t[PKM"  
package org.rut.util.algorithm.support; {o5E#<)  
:)?w 2'O  
import org.rut.util.algorithm.SortUtil; VwHTtZ  
$0sU h]7y  
/** +vBq,'k`  
* @author treeroot 0D:J d6\  
* @since 2006-2-2 RP z0WP  
* @version 1.0 !}Cd_tj6  
*/ B]InOlc47  
public class QuickSort implements SortUtil.Sort{ Nm:nSqc  
+;pdG[N  
/* (non-Javadoc) JTQ$p*2]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y*B}^!k6  
*/ B {f&'1pp/  
public void sort(int[] data) { R.*KaCA  
quickSort(data,0,data.length-1); =?0o5|u]  
} P0 DvZV8  
private void quickSort(int[] data,int i,int j){ eB<R@a|?S  
int pivotIndex=(i+j)/2; X9#Od9cNaC  
file://swap rM<c;iQ  
SortUtil.swap(data,pivotIndex,j); kdITh9nx<r  
s==gjA e:  
int k=partition(data,i-1,j,data[j]); QrHI}r  
SortUtil.swap(data,k,j); ul>$vUbyf  
if((k-i)>1) quickSort(data,i,k-1); 0^5SL/2  
if((j-k)>1) quickSort(data,k+1,j); =Qp~@k=2  
a(NN%'fDD  
} k2" Z:\?z  
/** QROe+:  
* @param data E@7";&\-8  
* @param i uw&GXOzew9  
* @param j Gyk>5Q}}  
* @return qi.|oL9p  
*/ ;KWR/?ec  
private int partition(int[] data, int l, int r,int pivot) { KFkKr>S :  
do{ 5 b( [1*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kZBIXW,G  
SortUtil.swap(data,l,r); s3W35S0Q3  
} s{2BG9s  
while(l SortUtil.swap(data,l,r); UsNr$MO {  
return l; Jb#*QJ=  
} XD<7d")I  
Pv1C o:  
} zT6ng#  
F=EAD3  
改进后的快速排序: xV:.)Dq9  
{l-,Jbfi`  
package org.rut.util.algorithm.support; ZsirX~W<  
vHZw{'5y  
import org.rut.util.algorithm.SortUtil; f"~+mO  
8*;G\$+  
/** f\!*%xS;  
* @author treeroot 9TjAEeU  
* @since 2006-2-2 0cC5  
* @version 1.0 R4"["T+L`  
*/ WIb\+!  
public class ImprovedQuickSort implements SortUtil.Sort { y/K%F,WMf  
9t(B{S  
private static int MAX_STACK_SIZE=4096; C0[Rf.*  
private static int THRESHOLD=10; !u.{<51b  
/* (non-Javadoc) LDN'o1$qo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ash"D~  
*/ 2-ev7:  
public void sort(int[] data) { .L0pS.=LT  
int[] stack=new int[MAX_STACK_SIZE]; `<zaxO  
.^N+'g  
int top=-1; [-f0s;F1%  
int pivot; wh l)^D  
int pivotIndex,l,r; ;Z:z'';Lm  
5m&{ f>]T  
stack[++top]=0; v_J\yW'K  
stack[++top]=data.length-1; o^wj_#ai$  
WZ&/l 65J  
while(top>0){ |j&u2DM~#m  
int j=stack[top--]; 'D#}ce)s#  
int i=stack[top--]; ELeR5xT  
pMM-LY7%{  
pivotIndex=(i+j)/2; |tP1,[w">  
pivot=data[pivotIndex]; 6Ii2rEzD  
Fl>v9%A  
SortUtil.swap(data,pivotIndex,j); KS}Ci-  
.Ej `!  
file://partition g-U'{I5F  
l=i-1; 7Av/ZS  
r=j; d i`}Y&  
do{ =L{lt9qQz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _SjS^z~  
SortUtil.swap(data,l,r); ?|Fu^eR%X  
} N6=cqUM wt  
while(l SortUtil.swap(data,l,r); m{`O.6#O  
SortUtil.swap(data,l,j); 3M8P%  
)I9AF,K  
if((l-i)>THRESHOLD){ Y=sRVypJ  
stack[++top]=i; Mii-Q`.:  
stack[++top]=l-1; Na=9 ju  
} VG*BAFs  
if((j-l)>THRESHOLD){ -v8Jn# f  
stack[++top]=l+1; Qf0$Z.-  
stack[++top]=j; 2x{@19w)C  
} {cnya*  
YiB]}/  
} f/H rO6~k%  
file://new InsertSort().sort(data); Q4{%)}2$  
insertSort(data); St-:+=V_  
} 5(q\x(N  
/** ePa:_?(  
* @param data CTp~bGIv!=  
*/ N{46DS  
private void insertSort(int[] data) { !p >a,8w  
int temp; PwQW5,,h0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q<o*rcwf ^  
} " E72j.  
} 5s8S;Pb]<  
} 3hab51J  
k:4 Z c3  
} >};,Byv!%  
V^QKn+/  
归并排序: y GT"k,a  
VQU[5C  
package org.rut.util.algorithm.support; LO[1xE9  
#HWz.Wb  
import org.rut.util.algorithm.SortUtil; iC?s`c0B  
q#LwM]<.@>  
/** m8n!<_NFt(  
* @author treeroot \NhCu$'  
* @since 2006-2-2 A^q= :ofQ  
* @version 1.0 /*`BGNkYY  
*/ Ziu f<X{  
public class MergeSort implements SortUtil.Sort{ 4A^hP![c#]  
`IOp*8  
/* (non-Javadoc) Wv_5sPqLW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;38W41d{  
*/ TP{lt6wws(  
public void sort(int[] data) { }oYR.UH  
int[] temp=new int[data.length]; aO.'(kk8  
mergeSort(data,temp,0,data.length-1); m?'5*\(ST  
} 9-o{[  
<89@k(\ /  
private void mergeSort(int[] data,int[] temp,int l,int r){ (9';zw   
int mid=(l+r)/2; =x> z|1  
if(l==r) return ; ^%~ztn 51  
mergeSort(data,temp,l,mid); B, xrZs  
mergeSort(data,temp,mid+1,r); t!c8 c^HR  
for(int i=l;i<=r;i++){ ,r{*o6  
temp=data; VXQS~#dQj  
} S+ymdZ)xZ`  
int i1=l; 583ej2HPg  
int i2=mid+1; _Ta9rDSP]  
for(int cur=l;cur<=r;cur++){ fpM 4q  
if(i1==mid+1) !s.G$ JS<  
data[cur]=temp[i2++]; jPP aL]  
else if(i2>r) |(}uagfrd  
data[cur]=temp[i1++]; XtT;UBE  
else if(temp[i1] data[cur]=temp[i1++]; Bh:AY@k  
else j8?$Hk  
data[cur]=temp[i2++]; Q&(?D  
} w!:u|  
} .!KlN%As  
[4 g5 {eX  
} .2Q`. o)  
Wq0h3AjR  
改进后的归并排序: |O\(<n S  
/AJ ^wY  
package org.rut.util.algorithm.support; f<xF+wE  
$%;NX[>j  
import org.rut.util.algorithm.SortUtil; <3P?rcd,5K  
n]ar\f  
/** d`StBXG!  
* @author treeroot R" 5/  
* @since 2006-2-2 ~Cks)mJs  
* @version 1.0 Z@ h<xo*r  
*/ ?@|1>epgd  
public class ImprovedMergeSort implements SortUtil.Sort { 4I"QT(;  
EYGJDv(S  
private static final int THRESHOLD = 10; p!' "hx  
I-kM~q_  
/* U'";  
* (non-Javadoc) 6TfL|W<  
* jt"p Js'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eWqJ2Tt  
*/ \b.2f+;3  
public void sort(int[] data) { LAw X9q`  
int[] temp=new int[data.length]; o|]xj'  
mergeSort(data,temp,0,data.length-1); mb0${n~fz  
} uP|AP  
?-#w [J'6  
private void mergeSort(int[] data, int[] temp, int l, int r) { |1g2\5Re  
int i, j, k; -5p=gO  
int mid = (l + r) / 2; m%ET!+  
if (l == r) uAzV a!)  
return; @ )<uQ S  
if ((mid - l) >= THRESHOLD) +/\.%S/  
mergeSort(data, temp, l, mid); }-zx4<4BH  
else iA^w2K  
insertSort(data, l, mid - l + 1); &_" 3~:N8k  
if ((r - mid) > THRESHOLD) k49CS*I  
mergeSort(data, temp, mid + 1, r); WHbvb3'  
else DbPw) aCj  
insertSort(data, mid + 1, r - mid); |+!Jr_ By  
^%go\ C ;  
for (i = l; i <= mid; i++) { }y=7r!{@  
temp = data; v bb mmv  
} 4$IPz7  
for (j = 1; j <= r - mid; j++) { ,"h$!k"$g  
temp[r - j + 1] = data[j + mid]; `*}#Bks!  
} )KXLL;]  
int a = temp[l]; +]uy  
int b = temp[r]; !G\1$"T$  
for (i = l, j = r, k = l; k <= r; k++) { jXZKR(L  
if (a < b) { HP]Xh~aP  
data[k] = temp[i++]; UY}lJHp0  
a = temp; WNm,r>6m  
} else { S_?}H  
data[k] = temp[j--]; &[ 3y_,  
b = temp[j]; ]d$)G4X 1  
} E'MMhl o  
} N_C\L2  
} LYWQqxB  
iY;)R|6  
/** ucoBeNsHx  
* @param data =b`>ggw#  
* @param l *ZN"+ wf\  
* @param i ]NTHit^EX  
*/ pNQd\nY|0  
private void insertSort(int[] data, int start, int len) { Yv"uIj+']  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K\?vTgc(  
} Ij=hmTl{P  
} /&kZ)XOi  
} Em4TEv  
} xFg=Tyq:  
L?al2aopF  
堆排序: ~0/=5 dC  
Onot<}K  
package org.rut.util.algorithm.support; *:YW@Gbm  
SvI  
import org.rut.util.algorithm.SortUtil; 3kKXzIh  
-MB ,]m  
/** b?w4Nx#  
* @author treeroot .>}we ~O  
* @since 2006-2-2 I9Z8]Q+2"  
* @version 1.0 ge[\%  
*/ D;Az>]>q  
public class HeapSort implements SortUtil.Sort{ &X|z(vSJ$  
h!d#=.R  
/* (non-Javadoc) E(u[?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g@nE7H1V  
*/ c!kbHZ<Z  
public void sort(int[] data) { Oh8;YE-%  
MaxHeap h=new MaxHeap(); <Xl G:nmY  
h.init(data); 'BUdySng  
for(int i=0;i h.remove(); 7Kh+m@q.  
System.arraycopy(h.queue,1,data,0,data.length); v[Ar{t&  
} Q@d X2  
.bpxSU%X  
private static class MaxHeap{ V]vk9M2q[l  
-sc@SoS  
void init(int[] data){ }]g>PY  
this.queue=new int[data.length+1]; DVpqm6$ Q  
for(int i=0;i queue[++size]=data; hP 9+|am%  
fixUp(size); i(U*<1y  
} bZtjg  
} p=Vm{i7  
66z1_ lA  
private int size=0; T[<9Ty'^  
T_\GvSOI  
private int[] queue; `D?vmSQ  
0eUsvzz 15  
public int get() { uV%7|/fD  
return queue[1]; 8c~b7F \  
} a&y%|Gs^f  
qU=$ 0M  
public void remove() { pLk?<y  
SortUtil.swap(queue,1,size--); FQ O6w'  
fixDown(1); 8+GlM+>4  
} L {\B9b2  
file://fixdown %X#Wc:b  
private void fixDown(int k) { iL5+Uf)E3  
int j; ]1p&*xX:Bj  
while ((j = k << 1) <= size) { .;$/nz6vk  
if (j < size %26amp;%26amp; queue[j] j++; pT[C[h:  
if (queue[k]>queue[j]) file://不用交换 b`%/ *  
break; =\_MJ?A$  
SortUtil.swap(queue,j,k); Y{2\==~  
k = j; #<!oA1MH4  
} <\yM{ V\  
} V-I_SvWv\  
private void fixUp(int k) { i<&2Ffvq  
while (k > 1) { xJZbax[  
int j = k >> 1; YFsEuaV  
if (queue[j]>queue[k]) t;E-9`N  
break; ]M= 3Sn8}  
SortUtil.swap(queue,j,k); Yo:>m*31  
k = j; HfmTk5|/  
} \.Q"fd?a_D  
} WKmGw^  
3QGg;  
} I_eYTy-a`1  
t5e%"}>7H  
} }4ta#T Ea  
JNk ]$ xz  
SortUtil: ~f ){`ZJc  
Ks!.$y:x  
package org.rut.util.algorithm; A^o  
l<^#@SH  
import org.rut.util.algorithm.support.BubbleSort; rWSw1(sAA  
import org.rut.util.algorithm.support.HeapSort; 8[}MXMRdb  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1kTJMtZG~  
import org.rut.util.algorithm.support.ImprovedQuickSort; d<: VoQM6M  
import org.rut.util.algorithm.support.InsertSort; GQ)hZt0  
import org.rut.util.algorithm.support.MergeSort; 8M:;9a8fh  
import org.rut.util.algorithm.support.QuickSort; G4AX8@;U  
import org.rut.util.algorithm.support.SelectionSort; &*L:4By)]  
import org.rut.util.algorithm.support.ShellSort; lty`7(\  
O,:ent|  
/** "hpK8vQ  
* @author treeroot UHweV:(|T  
* @since 2006-2-2 pD.7ib^  
* @version 1.0 lXL\e(ow  
*/ Qh)@-r3  
public class SortUtil { #). om*Xh  
public final static int INSERT = 1; l0[jepmpiT  
public final static int BUBBLE = 2; +<@7x16  
public final static int SELECTION = 3; .U9NQwd  
public final static int SHELL = 4; PS(9?rX#+  
public final static int QUICK = 5; ]?mWnEi!z  
public final static int IMPROVED_QUICK = 6; -twIF49  
public final static int MERGE = 7; fd*=`+P  
public final static int IMPROVED_MERGE = 8; A3yVT8  
public final static int HEAP = 9; =4+UX*&i?.  
tSE6m-  
public static void sort(int[] data) { u|9^tHT>  
sort(data, IMPROVED_QUICK); g8!!:fdu  
} =@V4V} ?  
private static String[] name={ 6+m)   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" pg*'2AT  
}; K'N\"Y?>  
9v<BO$ ,a  
private static Sort[] impl=new Sort[]{ Lg_y1Mu7o  
new InsertSort(), Zdj~B1  
new BubbleSort(), B,|M  
new SelectionSort(), u\&oiwSIP  
new ShellSort(), S1E2E3  
new QuickSort(), 09%q/-$  
new ImprovedQuickSort(), H>;km$b +  
new MergeSort(), a%Cq?HZ7  
new ImprovedMergeSort(), @MAk/mb&  
new HeapSort() ,t61IU3"  
}; %!p14c*J H  
X1#D}  
public static String toString(int algorithm){ ^*%p]r  
return name[algorithm-1]; =?vk n  
} 9"_qa q  
f+%J=Am  
public static void sort(int[] data, int algorithm) { B58H7NH ;G  
impl[algorithm-1].sort(data); Qf7]t-Kp  
} 0MrtJNF]_O  
9! gmS?f  
public static interface Sort { Z UAWSJ,s  
public void sort(int[] data); dUOjPq97  
} X\X  
}9<aX Y,  
public static void swap(int[] data, int i, int j) { '1=/G7g  
int temp = data; Ai(M06P:h  
data = data[j]; RyIr_:&-~  
data[j] = temp; !*?&V3!  
} T1\Xz-1  
} P}DrUND  
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