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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。 )F) (Hg  
插入排序: 7{e*isV  
@s;qmBX4  
package org.rut.util.algorithm.support; Q'S"$^~{  
l>O~^41[  
import org.rut.util.algorithm.SortUtil; r+%}XS%;h  
/** X,8 ]g.<  
* @author treeroot :;]iUjiC8  
* @since 2006-2-2 lZ9rB^!  
* @version 1.0 P>3 ;M'KsO  
*/ /a!M6:,pX  
public class InsertSort implements SortUtil.Sort{ 0? QTi(  
nB1[OB{  
/* (non-Javadoc) [q{[Avqf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S( r Fa  
*/ u4a(AB>S  
public void sort(int[] data) { mxJ& IV  
int temp; qE&R.I!o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |[}!E/7>b  
} yk| < P\  
} fSFb)+  
} <wZ2S3RNA  
N3J;_=<4  
} |B;tv#mKD  
:v!e8kM\x  
冒泡排序: ]V K%6PQ0  
.`3O4]N[  
package org.rut.util.algorithm.support; e1 j3X\ \  
u 6(O;  
import org.rut.util.algorithm.SortUtil; yy%'9E ldc  
]l WEdf+  
/** _c 4kj  
* @author treeroot MIJ^ n(-G  
* @since 2006-2-2 x4C}AyR  
* @version 1.0 IE|$mUabm  
*/ plRBfw>]N  
public class BubbleSort implements SortUtil.Sort{ r{T}pc>^  
k_hV.CV  
/* (non-Javadoc) BB694   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :q0TS>l  
*/ jr<`@  
public void sort(int[] data) { S_VZ^1X]  
int temp; u2G{I?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ eiV[y^?  
if(data[j] SortUtil.swap(data,j,j-1); eI7FbOze  
} i0y^b5@MOb  
} V9 dRn2- [  
} Gb\Nqx(  
} 8AK=FX&@&  
0Y81B;/F  
} #ONad0T;  
.W#-Cl&n8  
选择排序: Oist>A$Z  
<B?@,S>  
package org.rut.util.algorithm.support; -<[MM2Y  
a$*)d($  
import org.rut.util.algorithm.SortUtil; oXef<- :  
Qt@_C*,P  
/** s?8vs%(l  
* @author treeroot .I"Qu:``  
* @since 2006-2-2 +EZ Lic  
* @version 1.0 .m&JRzzV  
*/ *t JgQ[  
public class SelectionSort implements SortUtil.Sort { vjcG F'-  
Pde|$!Jo  
/* 2L<iIBSJwm  
* (non-Javadoc) Be=J*D!E=>  
* IezOal  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O#,Uz2  
*/ GxL;@%B  
public void sort(int[] data) { %8_bh8g-  
int temp; qW1d;pt  
for (int i = 0; i < data.length; i++) {  {hzU  
int lowIndex = i; (|<e4HfZL  
for (int j = data.length - 1; j > i; j--) { 0@K?'6  
if (data[j] < data[lowIndex]) { ' DZYN {}  
lowIndex = j; 6 K+DgNK  
} =r3%jWH6  
} H6Mqy}4W  
SortUtil.swap(data,i,lowIndex); E,S[3+  
} 6V"|  
} QgZwU$`p0  
o"te7nBI  
} TzC'x WO  
Ua>lf8w<  
Shell排序: &Hb;; Ic(  
Nq`@ >Ml  
package org.rut.util.algorithm.support; eD4qh4|u.  
(h} 5*u%h  
import org.rut.util.algorithm.SortUtil; G234UjN%  
M7O5uW`  
/** IMKyFp]h-  
* @author treeroot xpJ6M<O{8  
* @since 2006-2-2 ZPktZ  
* @version 1.0 JumZ>\'p(  
*/ </UUvMf"  
public class ShellSort implements SortUtil.Sort{ f4JmY1)@  
~6HpI0i  
/* (non-Javadoc) :2'y=t#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6zmt^U   
*/ %V,2,NCd  
public void sort(int[] data) { MM}lW-q;  
for(int i=data.length/2;i>2;i/=2){ *&f^R}O  
for(int j=0;j insertSort(data,j,i); t<)Cbple\  
} 0pO{{F  
} T<hS  
insertSort(data,0,1); s$cr|p;7#  
} #JmVq-)  
9Q~9C9{+  
/** q&/<~RC*  
* @param data >UUcKq1M:  
* @param j pO^PkX  
* @param i Z*+0gJ<Y  
*/ i `m&X6)\j  
private void insertSort(int[] data, int start, int inc) { YP^=b}  
int temp; JHxy_<p/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /s@t-gTi  
} 'jw?XtG  
} rBOxI  
} }?K vT$s  
g[oa'.*OB  
} HHT_}_?  
R&>G6jZ?8  
快速排序: <G9HVMiP  
+-DF3(  
package org.rut.util.algorithm.support; $+ z 3  
|WiE`&?xP  
import org.rut.util.algorithm.SortUtil; hA6   
z%)~s/2Rs  
/** 1JRM@!x  
* @author treeroot ~4 ~c+^PF  
* @since 2006-2-2 TY."?` [FK  
* @version 1.0 7L%JCH#F  
*/ Nl4,c[$C  
public class QuickSort implements SortUtil.Sort{ y:Wq;xEiDo  
~[_u@8l!mN  
/* (non-Javadoc) {7k Jj(Ue  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;6 ?a8t@  
*/ @q98ac*{  
public void sort(int[] data) { o1kTB&E4B  
quickSort(data,0,data.length-1); IhIz 7.|  
} %DK0s(*w0  
private void quickSort(int[] data,int i,int j){ zBQV2.@  
int pivotIndex=(i+j)/2; wMW."gM|  
file://swap u|ph_?6 o  
SortUtil.swap(data,pivotIndex,j); 1zGD~[M  
Oe)d|6=  
int k=partition(data,i-1,j,data[j]); &kR*J<)V  
SortUtil.swap(data,k,j); 8t1XZ  
if((k-i)>1) quickSort(data,i,k-1); S55h}5Y  
if((j-k)>1) quickSort(data,k+1,j); O'm5k l  
&z;bX-"E  
} TANv)&,|9  
/** _>8rTk`/h  
* @param data _#UiY ffa*  
* @param i @ 0'j;")XV  
* @param j L;7u0Yg  
* @return Wc*jTip  
*/ V-{3)6I$hG  
private int partition(int[] data, int l, int r,int pivot) { D6$*#D3U  
do{ t@&U2JaL>W  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); / 5!0wxN  
SortUtil.swap(data,l,r); %ER"Udh  
} a2!U9->!  
while(l SortUtil.swap(data,l,r); z4qc)- {L  
return l; _Gu;=H,~&  
} w4nU86oZYl  
w)rd--9f  
} (-no`j  
5}3#l/  
改进后的快速排序: L">\c5ca  
rD\)ndPv  
package org.rut.util.algorithm.support; ]c9\[Kdq}H  
x>cl$41!W  
import org.rut.util.algorithm.SortUtil; YE*%Y["  
HBdZE7.x)3  
/** CN{xh=2qY[  
* @author treeroot pjN4)y>0  
* @since 2006-2-2 }T5 E^  
* @version 1.0 1dhuLN%Ce  
*/ P=[_W;->}  
public class ImprovedQuickSort implements SortUtil.Sort { 7es<%H  
6~!QibA|P  
private static int MAX_STACK_SIZE=4096; S8j!?$`  
private static int THRESHOLD=10; C09rgEB\B  
/* (non-Javadoc) {;L,|(o^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^ Fnag]qQ  
*/ Ka_g3  
public void sort(int[] data) { S4_C8  
int[] stack=new int[MAX_STACK_SIZE]; gkM Q=;Nn  
e7Sp?>-d  
int top=-1; "5!T-Z+F  
int pivot; +a'LdEp  
int pivotIndex,l,r; Ol sX  
V0<g$,W=  
stack[++top]=0; 3;O4o]`  
stack[++top]=data.length-1; yPd6{% w  
8FIk|p|l^  
while(top>0){ 8345 H  
int j=stack[top--]; '8yCwk  
int i=stack[top--]; _UA|0a!-  
/V {1Zw=  
pivotIndex=(i+j)/2; bess b>=  
pivot=data[pivotIndex]; -d.i4X3j  
Ei7Oi!1  
SortUtil.swap(data,pivotIndex,j); +8|9&v`  
hh-a+] c0  
file://partition |@1M'  
l=i-1; TE5J @I  
r=j; YNB7`:  
do{ j"s7P%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h"y~!NWn  
SortUtil.swap(data,l,r); l$&dTI<#  
} 3#0y.. F  
while(l SortUtil.swap(data,l,r); UQg_y3 #V  
SortUtil.swap(data,l,j); SHYbQF2  
LVNA`|>  
if((l-i)>THRESHOLD){ lhC^Upqw  
stack[++top]=i; G J{XlH  
stack[++top]=l-1; I&6M{,rnM  
} kz/"5gX:  
if((j-l)>THRESHOLD){ 8RI'Fk{  
stack[++top]=l+1; Q!!u=}GYK  
stack[++top]=j; %Z3B9  
}  6oI/*`>  
_o T+x%i  
} =fy\W=c  
file://new InsertSort().sort(data); `6P2+wf1j~  
insertSort(data); +MqJJuWB  
} Hz"FGwd  
/** QHr'r/0  
* @param data 1l'JoU.<  
*/ hD[r6c  
private void insertSort(int[] data) { AHo}K\O?r  
int temp; M>Q3;s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zsLMROo3  
} 9X&=?+f  
} >"+ ho  
} Q;s {M{u  
R,s}<N$  
} r1Hh @sxn  
lWn}afI  
归并排序: +c8t~2tuN  
P }^Y"zF2  
package org.rut.util.algorithm.support; (5;nA'  
sPMICIv|  
import org.rut.util.algorithm.SortUtil; '5b0 K1$"  
ucJ}KMz  
/** NM9,AG  
* @author treeroot njZJp|y6  
* @since 2006-2-2 \:g\?[  
* @version 1.0 0CvGpM,  
*/ 01&@8z'E  
public class MergeSort implements SortUtil.Sort{ 2acT w#  
'd|!Hr<2  
/* (non-Javadoc) BaWU[*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *8_Dn}u?Jx  
*/ |@~_&g  
public void sort(int[] data) { )Ii`/I^  
int[] temp=new int[data.length]; V!(7=ku!`  
mergeSort(data,temp,0,data.length-1); 73B[|J*  
} '"+Gn52#  
%JH/|mA&|  
private void mergeSort(int[] data,int[] temp,int l,int r){ lcLDCt ?  
int mid=(l+r)/2; XDAP[V  
if(l==r) return ; E+|K3EJ  
mergeSort(data,temp,l,mid); gj iFpW4  
mergeSort(data,temp,mid+1,r); ACy}w?D<  
for(int i=l;i<=r;i++){ >9mj/P D  
temp=data; ]imVIu   
} (?g+.]Dt,  
int i1=l; 4x<H=CJC  
int i2=mid+1; $)nPj_h  
for(int cur=l;cur<=r;cur++){ +V(^ "Z~  
if(i1==mid+1) V7}'g6X  
data[cur]=temp[i2++]; T`MM<+^G  
else if(i2>r) *p=enflU  
data[cur]=temp[i1++]; E=CAWj\  
else if(temp[i1] data[cur]=temp[i1++]; MkHkM  
else Q@W!6]*\  
data[cur]=temp[i2++]; =)G]\W)m  
} Caz5q|Oo  
} d#XgO5eyO  
<.Pt%Kg^BS  
} (7N!Jvg9  
i=*H|)  
改进后的归并排序: 7_P33l8y  
{8qcM8  
package org.rut.util.algorithm.support; 1Jdx#K  
>kxRsiKV  
import org.rut.util.algorithm.SortUtil; U?d  I  
_VRxI4q  
/** P(FlU]q  
* @author treeroot 5|~nX8>  
* @since 2006-2-2 |x.^rx`  
* @version 1.0 Mtv{37k~  
*/ H3*] }=   
public class ImprovedMergeSort implements SortUtil.Sort { }!{R;,5/n  
IU5T5p  
private static final int THRESHOLD = 10; $U. |  
w;{Q)_A  
/* + kT ]qH  
* (non-Javadoc) pdR\Ne0P*  
* @87Y/_l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W!R0:-  
*/ .>#O'Z&q9  
public void sort(int[] data) { UGd\`*Cj  
int[] temp=new int[data.length]; 4`)r1D!U  
mergeSort(data,temp,0,data.length-1); &tvtL  
} Ww60-d}}Q  
gKl9Nkd!R  
private void mergeSort(int[] data, int[] temp, int l, int r) { PVH Or^  
int i, j, k; ^"p . 3Hy  
int mid = (l + r) / 2; n?$c"}  
if (l == r) =Gu&0f  
return; u8.Tu7~  
if ((mid - l) >= THRESHOLD) #;~HoOK*#  
mergeSort(data, temp, l, mid); dt@c,McN|Q  
else XVqkw@Ia4!  
insertSort(data, l, mid - l + 1); @8>bp#x/1  
if ((r - mid) > THRESHOLD) _k26(rdI@-  
mergeSort(data, temp, mid + 1, r); 9PA<g3z  
else akNqSZwj  
insertSort(data, mid + 1, r - mid); r180vbN$  
L%(NXSfu7  
for (i = l; i <= mid; i++) { Pzq^x]  
temp = data; nIr`T^c9c  
} j`"!G*Vh  
for (j = 1; j <= r - mid; j++) { #) :.1Z?  
temp[r - j + 1] = data[j + mid]; %cg| KB"l  
} .{c7 I!8  
int a = temp[l]; 1++g @8  
int b = temp[r]; vG'#5%,|  
for (i = l, j = r, k = l; k <= r; k++) { "^6Fh"]  
if (a < b) { jd-ccnR l  
data[k] = temp[i++]; o+}k$i!6  
a = temp; KUYwc@si\  
} else { =f y|Dm74  
data[k] = temp[j--]; ` 6*]cn#(  
b = temp[j]; lH`TF_  
} HUD0 @HQI  
} J<+ f7L  
} =?0v,;F9|  
!L9OJ1F  
/** s5{=lP  
* @param data {pH#zs4Y  
* @param l c QuL9Xo  
* @param i ~WTkX(\  
*/ ssx#|InY  
private void insertSort(int[] data, int start, int len) { B7[d^Y60B  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); & nXE?-J  
} 5N $XY@  
} aIFlNS,y  
} 5v)bs\x6  
} o ?vGI=  
Ms,MXJtH  
堆排序: dt:$:,"   
nOL.%  
package org.rut.util.algorithm.support; r9&m^,U  
_3@5@1[s  
import org.rut.util.algorithm.SortUtil; x1#>"z7  
Nz.X$zUmY  
/** Rr %x;-  
* @author treeroot m!Z<\2OP  
* @since 2006-2-2 O 1z0dHa  
* @version 1.0 =xIZJ8e  
*/ z/xPI)R[  
public class HeapSort implements SortUtil.Sort{ p>+9pxx~U  
xmcZN3 ){+  
/* (non-Javadoc) -grf7w^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y2QX<  
*/ g ass Od  
public void sort(int[] data) { b{ xlW }S  
MaxHeap h=new MaxHeap(); s+lBai*#  
h.init(data); ebI2gEu;a  
for(int i=0;i h.remove(); >*h+ N? m  
System.arraycopy(h.queue,1,data,0,data.length); ').) 0;  
} Rv9jLH  
Zf@B< m  
private static class MaxHeap{ 30uPDDvar  
3._ ep  
void init(int[] data){ 6 Ln~b<I  
this.queue=new int[data.length+1]; N$]er'`  
for(int i=0;i queue[++size]=data; \\<=J[R.M  
fixUp(size); sd\p[MXX  
} q/U-6A[0  
} Pn OWQ8=  
`L`+`B  
private int size=0; {owuYVm  
( ~5 M{Xh  
private int[] queue; r)'vn[A  
\OVtvJV]  
public int get() { `R8&(kQ  
return queue[1]; IB[$~sGe  
} Pn">fWRCx  
]qv0Y~+`-K  
public void remove() { Yu3S3aRE  
SortUtil.swap(queue,1,size--); g) u%?T  
fixDown(1); xz"60xxY  
} ~SQ xFAto  
file://fixdown :Fb>=e  
private void fixDown(int k) { ]q%r2 (y,k  
int j; U*$P"sS`  
while ((j = k << 1) <= size) { xrg?{*\  
if (j < size %26amp;%26amp; queue[j] j++; Y)X7*iTi'j  
if (queue[k]>queue[j]) file://不用交换 >Dr(%z6CN  
break; B{j><u xl  
SortUtil.swap(queue,j,k); X"r)zCP+t  
k = j; EYq?NL='  
} [UzD3VPg  
} (4R(5t  
private void fixUp(int k) { =9a2+v0  
while (k > 1) { A%.mIc.  
int j = k >> 1; l}z<q  
if (queue[j]>queue[k]) TR0y4u[  
break; 8J(j}</>a  
SortUtil.swap(queue,j,k); XJ4f;U  
k = j; NVv <vu  
} T(7`$<TQ  
} 29RP$$gR  
xGwImF$r  
} ;3cbXc@]  
#_ |B6!D!  
} $5&%X'jk  
{\l  
SortUtil: JkAM:,^(  
sg $db62>  
package org.rut.util.algorithm; INi$-Y+  
 lln"c  
import org.rut.util.algorithm.support.BubbleSort; z5fE<=<X_W  
import org.rut.util.algorithm.support.HeapSort; njy2pDC@  
import org.rut.util.algorithm.support.ImprovedMergeSort; rY_~(?XS  
import org.rut.util.algorithm.support.ImprovedQuickSort; /YvXyi>^"%  
import org.rut.util.algorithm.support.InsertSort; Z ;.-UXat  
import org.rut.util.algorithm.support.MergeSort; X=$Jp.  
import org.rut.util.algorithm.support.QuickSort; _AX 9 Mu]  
import org.rut.util.algorithm.support.SelectionSort; (G"'Fb6d  
import org.rut.util.algorithm.support.ShellSort; :x\[aG9  
K.)!qkW-%S  
/** >S +}  
* @author treeroot r.H`3m.0q  
* @since 2006-2-2 P9cx&Hk9  
* @version 1.0 2^WJ1: A  
*/ l/X_CM8y~  
public class SortUtil { l'+3 6  
public final static int INSERT = 1; S:_Ms{S  
public final static int BUBBLE = 2; YO7U}6wBt  
public final static int SELECTION = 3; E JkHPn  
public final static int SHELL = 4; ;?2)[a  
public final static int QUICK = 5; hC:'L9Y  
public final static int IMPROVED_QUICK = 6; p`Pa;=L  
public final static int MERGE = 7; ~$HB}/  
public final static int IMPROVED_MERGE = 8; O^@8Drgc  
public final static int HEAP = 9; x4'@U<  
IK2da@V  
public static void sort(int[] data) { 2a$. S " ?  
sort(data, IMPROVED_QUICK); g<:Lcg"u  
} C& +MRP  
private static String[] name={ 7=l~fKu  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @k?vbq  
}; OpUfK4U)  
?,vLRq.  
private static Sort[] impl=new Sort[]{ n1f8jS+'}  
new InsertSort(), ]" 'yf;g  
new BubbleSort(), @Po5AK3cy  
new SelectionSort(), iE~!?N|a3  
new ShellSort(), g&Vhu8kNIA  
new QuickSort(), }Ce9R2  
new ImprovedQuickSort(), 7OV^>"S  
new MergeSort(), YJJ1N/Z1  
new ImprovedMergeSort(), fq7#rZCxX  
new HeapSort() "Oxr}^% i  
}; hLO)-ueb  
yE$PLM  
public static String toString(int algorithm){ R}&?9tVRR  
return name[algorithm-1]; w$}q`k'  
} D p'urf\*$  
oB:7R^a  
public static void sort(int[] data, int algorithm) { @Kpm&vd(  
impl[algorithm-1].sort(data); FOTe, F.8  
} CsO!Y\'FY  
7H6Ts8^S  
public static interface Sort { ewMVUq*:  
public void sort(int[] data); e=sc$1|4=  
} Ni_H1G  
jl,gqMn"V  
public static void swap(int[] data, int i, int j) { p _gN}v  
int temp = data; b;i*}4h!  
data = data[j]; L AQ@y-K3  
data[j] = temp; MP%#)O6  
} xWLvx'8W  
} -KiPqE%&G  
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