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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。 tDQo1,(oY  
插入排序: Vgg' 5o&.  
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package org.rut.util.algorithm.support; ebTwU]Nb  
UVlXDebl  
import org.rut.util.algorithm.SortUtil; ySP%i6!au  
/** w dpd`  
* @author treeroot F=9-po  
* @since 2006-2-2 rJ^*8C!  
* @version 1.0 *_,: &Ur  
*/ Ce.*yO<-  
public class InsertSort implements SortUtil.Sort{ pLtAusx  
hVLV Mqd  
/* (non-Javadoc) 0V!@*Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1m\ihU  
*/ L_(Y[!  
public void sort(int[] data) { /@xL {  
int temp; .{t]Mc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '1NZSiv+C?  
} ~]S%b3>  
} rIRkXO)  
} '6zk> rN  
9'I$8Su  
} RkTO5XO  
M WHzrqCA  
冒泡排序: 7c>{og6  
FrL ;1zt  
package org.rut.util.algorithm.support; #_9Jam%M  
9X ^D(  
import org.rut.util.algorithm.SortUtil; [qHtN.  
NB)$l2<d  
/** {K ,-fbE  
* @author treeroot *T:gx:Sg/  
* @since 2006-2-2 -_p@I+B  
* @version 1.0 O@7={)6qc  
*/ ^sb+|b  
public class BubbleSort implements SortUtil.Sort{ wNtPh&  
"}ZUa~7  
/* (non-Javadoc) i0py5Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) : kw14?]_  
*/ 9|5>?'CqP  
public void sort(int[] data) { *If ]f0?%  
int temp; vWq/A.  
for(int i=0;i for(int j=data.length-1;j>i;j--){ g(-}M`  
if(data[j] SortUtil.swap(data,j,j-1); s& Lyg>>`  
} w7"&\8a  
} 88~ lP7J  
} 3^2P7$W=   
} s{@3G8  
^^ +vt8|  
} sA1 XtO<&7  
2 i:tPe&  
选择排序: ]<<+#Rg  
> a"4aYj  
package org.rut.util.algorithm.support; VU ,tCTXz  
("T8mt[w>  
import org.rut.util.algorithm.SortUtil; 6,j&u7  
Hr/3nq}.  
/** -h1FrDBt  
* @author treeroot ~9h/{$  
* @since 2006-2-2 ZB5u\NpcW  
* @version 1.0 v3Xt<I=4y  
*/ C#@>osC  
public class SelectionSort implements SortUtil.Sort { P%_PG%O2p  
yaWHGre  
/* YM4njkI7  
* (non-Javadoc) Q ~>="Yiu  
* QbG`F8dj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }v$T1Cw  
*/ 8B"my\  
public void sort(int[] data) { 6Cvg-X@  
int temp; M F_VMAq  
for (int i = 0; i < data.length; i++) { A;e0h)F$-  
int lowIndex = i; <rAWu\d;  
for (int j = data.length - 1; j > i; j--) { 6"PwOEt  
if (data[j] < data[lowIndex]) { n^:Wc[[m  
lowIndex = j; ~h@<14c{X  
} u8sK~1CPf  
} n1+,Pe*)  
SortUtil.swap(data,i,lowIndex); 0\a;} S'g#  
} =[x @BzH  
} ;&?l1Vu  
^iz2 =}Q8  
} w/Ej>OS  
h& Q9  
Shell排序: O({vHqN>  
MsLQ'9%Au  
package org.rut.util.algorithm.support; wML5T+  
XJ9l, :c,  
import org.rut.util.algorithm.SortUtil; I15g G.)  
L; f  
/** }5{#f`Ca6  
* @author treeroot XJ9bY\>)q1  
* @since 2006-2-2 3GU JlFj  
* @version 1.0 o^b4l'&o  
*/ .X(*mmH  
public class ShellSort implements SortUtil.Sort{ Ii4lwZnz  
mIUpAOC`"Z  
/* (non-Javadoc) &] euL:C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \5=fC9*G  
*/ 'l`T(_zL\%  
public void sort(int[] data) { +jIE,N  
for(int i=data.length/2;i>2;i/=2){ q)E J?-  
for(int j=0;j insertSort(data,j,i); RiNKUk{-  
} j_Z"=  
} ^d[ s*,i?  
insertSort(data,0,1); p@x1B &Z  
} hp6%zUR  
+(9qAB7  
/** 2 bQC 2  
* @param data {S;/+X,  
* @param j }iF"&b0n"  
* @param i vJE>H4qPmD  
*/ JJe?Zu\  
private void insertSort(int[] data, int start, int inc) { %U$PcHOo  
int temp; 2gC.Z:}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tE>hj:p  
} KXy|Si8w  
} ob3Z I  
} l|onH;g\  
{V{*rq<)  
} K;}h u(*\]  
I%q&4L7pj  
快速排序: I];Hx'/<~  
5 LZ+~!2+  
package org.rut.util.algorithm.support; hc4W|Ofj  
q>X%MN y  
import org.rut.util.algorithm.SortUtil; 3%$nRP X  
L8zY?v(bG  
/** s]p3dB#  
* @author treeroot DMY?'Nts!  
* @since 2006-2-2 {Noa4i  
* @version 1.0 e2 ?7>?  
*/ @'yD(ZMAz  
public class QuickSort implements SortUtil.Sort{ fGD#|a;,  
TLk=H Gw  
/* (non-Javadoc) 'nFqq:2Xa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C$1}c[  
*/ z7H[\4A!>  
public void sort(int[] data) { Ba],ONM4k  
quickSort(data,0,data.length-1); >/DyR+?>4  
} >|[74#}7  
private void quickSort(int[] data,int i,int j){ =O)dHY}  
int pivotIndex=(i+j)/2; yn[^!GuJ_  
file://swap 27t23@{YL  
SortUtil.swap(data,pivotIndex,j); x@I(G "  
54Baz  
int k=partition(data,i-1,j,data[j]); U0+Hk+  
SortUtil.swap(data,k,j); U[a;e OLx  
if((k-i)>1) quickSort(data,i,k-1); ,\|W,N}~  
if((j-k)>1) quickSort(data,k+1,j); W:7oGZ>4  
pOCLyM9c  
}  wv2  
/** FX FTf2*T  
* @param data CE$c/d[N.  
* @param i <.0-K_  
* @param j K>h=  
* @return n0T\dc~  
*/ u(7PtmV[!  
private int partition(int[] data, int l, int r,int pivot) { 5_ @8g+~  
do{ m q`EM OH  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); iR9 $E  
SortUtil.swap(data,l,r); 4*4s{twG  
} ;R E|9GR  
while(l SortUtil.swap(data,l,r); T<|B1jA  
return l; HXTBxh  
} cp0@wC#d  
?=B$-)/  
} $/aZ/O)F  
SsDe\"?Q  
改进后的快速排序: sS, Swgr  
F#X&Tb{  
package org.rut.util.algorithm.support; -bo5/`x  
coHzbD~#H  
import org.rut.util.algorithm.SortUtil; 8 'Z#sM^E  
a W`q  
/** GNzk Vy:u  
* @author treeroot /2K4ka<?7  
* @since 2006-2-2 ~n$VCLa  
* @version 1.0 W>Eee?  
*/ Wc4F'}s  
public class ImprovedQuickSort implements SortUtil.Sort { F$UvYy4O d  
)\C:|  
private static int MAX_STACK_SIZE=4096; L'LZK  
private static int THRESHOLD=10; X !g"D6'  
/* (non-Javadoc) _ cK"y2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \0iF <0oy  
*/ |1zoT|}q  
public void sort(int[] data) { `Ym7XF&  
int[] stack=new int[MAX_STACK_SIZE]; epsh&)5a*  
4=S.U`t7  
int top=-1; .7Zb,r  
int pivot; %e2,p&0G  
int pivotIndex,l,r; F_o5(`>^  
{ as#lHn  
stack[++top]=0; PG<tic<?  
stack[++top]=data.length-1; [R[]&\W  
-t_t3aU|  
while(top>0){ bT<if@h-  
int j=stack[top--]; n}MW# :eJe  
int i=stack[top--]; Yy6Mkw7X  
)-q#hY  
pivotIndex=(i+j)/2; dd#=_xe  
pivot=data[pivotIndex]; \jDD=ew  
ufE;rcYE  
SortUtil.swap(data,pivotIndex,j); >NWrT^rk  
yrOWC  
file://partition )mw#MTv<[  
l=i-1; !63p?Q=  
r=j; 7U> Xi'?  
do{ tLXwszR0r  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #T1py@b0zA  
SortUtil.swap(data,l,r); YIv!\`^ \  
} 3-z; pk  
while(l SortUtil.swap(data,l,r); ]z EatY  
SortUtil.swap(data,l,j); 1*\JqCR  
XdX1GH*C  
if((l-i)>THRESHOLD){ z^z_!@7v   
stack[++top]=i; 0|kkwZVPn  
stack[++top]=l-1; E|OB9BOS  
} 6? I,sZW  
if((j-l)>THRESHOLD){ yOwo(+ 2  
stack[++top]=l+1; Umx~!YL!  
stack[++top]=j; hh/C{ l  
} kH'LG!O  
QOA7#H-m9  
} `)Z"||8K  
file://new InsertSort().sort(data);  J jRz<T;  
insertSort(data); f%fD>a  
} `yYoVu*  
/** U.]5UP:a  
* @param data JDcc`&`M  
*/ e 4-  
private void insertSort(int[] data) { #9-qF9M  
int temp; u~WBu|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); npC:SrI%  
} "mlVs/nsyG  
} E9e|+$  
} '4-J0S<<_  
`|maf=SnY5  
} {;uOc{~+  
5}S~8  
归并排序: XpWcf ([  
>yk@t&j,  
package org.rut.util.algorithm.support; w<=?%+n  
-]$q8 Q(hM  
import org.rut.util.algorithm.SortUtil; G?`{OW3:_  
 -D*,*L  
/** 8S*3W3HY  
* @author treeroot 4&b*|"Iw  
* @since 2006-2-2 kr ,&aP<,  
* @version 1.0 =-wF Brw  
*/ qWz%sT?C3L  
public class MergeSort implements SortUtil.Sort{ 3@#WYvD  
Er /:iO)_  
/* (non-Javadoc) :;Z?2P5i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J @eu ]?h  
*/ F/gA[Y|,gI  
public void sort(int[] data) { Kvx~2ZMx6  
int[] temp=new int[data.length]; Hw"Lo Vh  
mergeSort(data,temp,0,data.length-1); r<< ]41  
} Rq`B'G9|c  
P1cI]rriW  
private void mergeSort(int[] data,int[] temp,int l,int r){ u!4i+7}  
int mid=(l+r)/2; ViZ Tl~  
if(l==r) return ; xF4S  
mergeSort(data,temp,l,mid); VcI'+IoR?  
mergeSort(data,temp,mid+1,r); [;6,lI}  
for(int i=l;i<=r;i++){ C_CUk d[  
temp=data; p;#@#>h  
} \ @XvEx%  
int i1=l; vndD#/lXq  
int i2=mid+1; 'uy\vR&Pz  
for(int cur=l;cur<=r;cur++){ ?2d! ^!9  
if(i1==mid+1) Z`jc*jgy  
data[cur]=temp[i2++]; $2!|e,x  
else if(i2>r) ;t6)(d4z?  
data[cur]=temp[i1++]; *vFXe_.  
else if(temp[i1] data[cur]=temp[i1++]; B\WIoz;'  
else \%],pZsA~  
data[cur]=temp[i2++]; tW$Di*h  
} d WKjVf  
} wE*o1.  
9NXL8QmC8  
} 2TQyQ%  
O+f'Ql  
改进后的归并排序: YCBp ]xuE  
{3)^$F=T  
package org.rut.util.algorithm.support; !H)Cua)  
;@5N  
import org.rut.util.algorithm.SortUtil; h7?uM^p  
p.%lE! v  
/** "W71#n+ [  
* @author treeroot le7!:4/8  
* @since 2006-2-2 !+R_Z#gB  
* @version 1.0 T:<mme3v  
*/ ][D/=-  
public class ImprovedMergeSort implements SortUtil.Sort { V^S` d8?  
G q&[T:  
private static final int THRESHOLD = 10; )t?_3'W  
w'i8yl bZ  
/* {OIktG2gZ  
* (non-Javadoc) {tKi8O^Rb  
* rjaG{ i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OYYk[r  
*/ Zqi;by%  
public void sort(int[] data) { K^6fg,&  
int[] temp=new int[data.length]; r &.gOC  
mergeSort(data,temp,0,data.length-1); ]K<mkUpY  
} Xi  8rD"v  
=6YffXa_s  
private void mergeSort(int[] data, int[] temp, int l, int r) { w *Txc}  
int i, j, k; a_V.mu6h6p  
int mid = (l + r) / 2; BN]{o(EB  
if (l == r) 7 'B9z/  
return; W)LtnD2 w  
if ((mid - l) >= THRESHOLD) (R{|*:KP  
mergeSort(data, temp, l, mid); ]r&dWF  
else paYvYK-K?  
insertSort(data, l, mid - l + 1); 5f}GV0=n  
if ((r - mid) > THRESHOLD) |V dr/'  
mergeSort(data, temp, mid + 1, r); GZx?vSoHh  
else h\<;N*Xi  
insertSort(data, mid + 1, r - mid); [&MhAzF  
hLo'q^mGr  
for (i = l; i <= mid; i++) { B[IqLD'6  
temp = data; Z*Lv!6WS  
} TBU.%3dEyI  
for (j = 1; j <= r - mid; j++) { 1RU+d.&D  
temp[r - j + 1] = data[j + mid]; $`'%1;y@  
} b%_[\((  
int a = temp[l]; )4O* D92  
int b = temp[r]; u^X,ASkQ  
for (i = l, j = r, k = l; k <= r; k++) { 3:B4;  
if (a < b) { \L]T|]}(  
data[k] = temp[i++]; kN8?.V%Utw  
a = temp; _ry7 [/)  
} else { &60#y4  
data[k] = temp[j--]; .>^iU}  
b = temp[j]; cERmCe|/CG  
} WoSJp5By$  
} iS#m{1m$$  
} {0J (=\u  
\f-HfYG  
/** /9k}Ip  
* @param data Q<UKR|6  
* @param l ) mG  
* @param i Xxmvg.Nl  
*/ OE8H |?%  
private void insertSort(int[] data, int start, int len) { F7N4qq1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -guVl 4 V  
}  Z5[f  
} %:=Jr#a  
} S!{Kn ;@  
} l ]CnLqf&  
2nv-/ %]  
堆排序: #Py\'  
Ynx.$$`$=  
package org.rut.util.algorithm.support; iTpK:p X  
s]@k,%  
import org.rut.util.algorithm.SortUtil; <uL0 M`u3  
R)u ${  
/** >=!$(JgX  
* @author treeroot bA*T1Db,t>  
* @since 2006-2-2 O ]Stf7]%;  
* @version 1.0 zrazFI0G  
*/ ,].S~6IM  
public class HeapSort implements SortUtil.Sort{ M\w%c5  
:978D0}{p  
/* (non-Javadoc) 6~y7A<[^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Gp|K6  
*/ KGq4tlM6  
public void sort(int[] data) { *s}j:fJ  
MaxHeap h=new MaxHeap(); $P7G,0-  
h.init(data); H>Ws)aCq  
for(int i=0;i h.remove(); ]>'yt #]  
System.arraycopy(h.queue,1,data,0,data.length); 3!<} -sW4  
} B_uAa5'  
]Yd7  
private static class MaxHeap{ d*(wU>J '  
%n<.)R  
void init(int[] data){ ,Y_[+  
this.queue=new int[data.length+1]; ypA)G/;  
for(int i=0;i queue[++size]=data; (g 9G!I   
fixUp(size); /&Vgo ~.J  
} a"|\n_  
} O:86*  
 U<Z\jT[  
private int size=0; HZ.Jc"+M  
V9r58hbVT  
private int[] queue; ?ybX &V  
MI<XLn!*  
public int get() { `h+1u`FJ  
return queue[1]; u, Rhm-`  
} Vo-]&u&cr  
4}t&AW4  
public void remove() { i<]Y0_?s  
SortUtil.swap(queue,1,size--); #&jr9RB  
fixDown(1); 9'S~zG%{  
} r" )zR,  
file://fixdown 2xJT!lN  
private void fixDown(int k) { ~!G&K`u  
int j; $h|rd+},  
while ((j = k << 1) <= size) { xB&6f")  
if (j < size %26amp;%26amp; queue[j] j++; .wv!;  
if (queue[k]>queue[j]) file://不用交换 va_TC!{;  
break; W2 ([vRT  
SortUtil.swap(queue,j,k); ok+-#~VTn  
k = j; avI   
} QW_QizR>|  
} *E-VS= #  
private void fixUp(int k) { K`d3p{M  
while (k > 1) { :.,3Zw{l  
int j = k >> 1; 3ZKaqwK  
if (queue[j]>queue[k]) U~Ai'1?xz  
break; $={WtR  
SortUtil.swap(queue,j,k); [va7+=[1=  
k = j; 9v2(cpZ  
} [Y^1}E*  
} <fLk\ =  
I$7TnMug  
} 6qgII~F'  
^-'t`mRl]d  
} l8_TeO  
^"Nsb&  
SortUtil: 1q[vNP=g&  
+^6v%z  
package org.rut.util.algorithm; :i24 @V~){  
|UO&18Y7-  
import org.rut.util.algorithm.support.BubbleSort; h c9? z}  
import org.rut.util.algorithm.support.HeapSort; .+"SDt oX  
import org.rut.util.algorithm.support.ImprovedMergeSort; T'TxC)  
import org.rut.util.algorithm.support.ImprovedQuickSort; s`$px2Gw  
import org.rut.util.algorithm.support.InsertSort; ^9Je8 @Yu  
import org.rut.util.algorithm.support.MergeSort; "[LSDE"(  
import org.rut.util.algorithm.support.QuickSort; VC6S4FU4K  
import org.rut.util.algorithm.support.SelectionSort; @$(/6]4p  
import org.rut.util.algorithm.support.ShellSort; tR]1c  
# Y*cLN`Y7  
/** jSj (ZU6  
* @author treeroot }Pj3O~z  
* @since 2006-2-2 1jhGshhp  
* @version 1.0 1K;i/  
*/ zFtwAa=r  
public class SortUtil { X[cSmkp7  
public final static int INSERT = 1; gl4|D  
public final static int BUBBLE = 2; Q3vWwP;t~  
public final static int SELECTION = 3; z Dk^^'  
public final static int SHELL = 4; v$`AN4)}  
public final static int QUICK = 5; W,^(FR.  
public final static int IMPROVED_QUICK = 6;  :_qgpE<  
public final static int MERGE = 7; >Tm|}\qEb  
public final static int IMPROVED_MERGE = 8; zJfoU*G/B  
public final static int HEAP = 9; L|3wG Y9E  
lj1wTiaI(  
public static void sort(int[] data) { h|!F'F{  
sort(data, IMPROVED_QUICK); n+EK}= DK  
} ?CQ\9 4kO  
private static String[] name={ E!4Qc+.   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Q1Jkt  
}; 4^KoH eM6  
rX%qWhiEJ  
private static Sort[] impl=new Sort[]{ j;O{Hvvz  
new InsertSort(), V^t5 Y+7  
new BubbleSort(), s1!_zf_  
new SelectionSort(), @ P=eu3  
new ShellSort(), jaAv_=93f  
new QuickSort(), U/B1/96lJ  
new ImprovedQuickSort(), $rySz7NI  
new MergeSort(), ^;2dZgJ4^  
new ImprovedMergeSort(), <N%8"o  
new HeapSort() FRicHs n  
}; fWR]L47n  
U=C8gVb{Hq  
public static String toString(int algorithm){ "Q~6cH[#  
return name[algorithm-1]; fNi&1J-/  
} Hy<4q^3$G  
><X!~by  
public static void sort(int[] data, int algorithm) { dm Lgt)-t  
impl[algorithm-1].sort(data); >8 V;:(nt  
} .,K?(O4AY  
d0b--v/  
public static interface Sort { 2O|o%`?  
public void sort(int[] data); FxKb  
} DlR&Lnv  
6qK0G$>  
public static void swap(int[] data, int i, int j) { =*q:R9V  
int temp = data; eB:obz  
data = data[j]; -K`0`n}  
data[j] = temp; .~ a)  
} % 8kbX  
} Y"mD)\Bw?  
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