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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。 8?Wgawx  
插入排序: "8t\MKt(  
J8h7e}n?  
package org.rut.util.algorithm.support; |LFUzq>j  
rU*q@y Px  
import org.rut.util.algorithm.SortUtil; 9UmBm#"  
/** Y2vj}9jK  
* @author treeroot e-!?[Ujv*%  
* @since 2006-2-2 "w^Nu6  
* @version 1.0 & >b+loF  
*/ _sm;HH7'*  
public class InsertSort implements SortUtil.Sort{ 4Bo<4 4-,  
C@)pmSQ  
/* (non-Javadoc) rys<-i(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /d]~ly @uI  
*/ # `58F.  
public void sort(int[] data) { "8_,tYAH  
int temp; .P%ym~S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zW)gC9_|m-  
} E.#6;HHzN  
} Xv*}1PZH  
} )[ w&C_>]  
\Jf9npz3  
} x,-S1[#X;  
O99mic  
冒泡排序: x.G"D(  
u !.DnKu  
package org.rut.util.algorithm.support; ULTNhq R*n  
NY 4C@@"  
import org.rut.util.algorithm.SortUtil; \AJS,QD  
{0fz9"|U  
/** =?+w)(*0c  
* @author treeroot xtsL8-u f  
* @since 2006-2-2 iRouLd  
* @version 1.0 rV U:VL`2  
*/ 9C?cm:  
public class BubbleSort implements SortUtil.Sort{ FRS28D  
DOT=U _  
/* (non-Javadoc) 59K}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CnQg*+  
*/ xi.IRAZX  
public void sort(int[] data) { ?to1rFrU  
int temp; W7W3DBKtSm  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5R"2Wd  
if(data[j] SortUtil.swap(data,j,j-1); +0U#.|?  
} z[Z2H5[  
} hafECs  
} tU(y~)]  
} 2J&XNV^tJ  
C;%Y\S  
} ,y%ziay  
kI<Wvgo L  
选择排序: OuNj:  
kLq( !Gs  
package org.rut.util.algorithm.support; \P5>{ 2i  
$59nu7yr  
import org.rut.util.algorithm.SortUtil; }!=gP.Zu^  
{Wa~}1`Kl  
/** psu OJ-  
* @author treeroot jwq\stjD  
* @since 2006-2-2 Ia'x]#~  
* @version 1.0 u8^Y,LN  
*/ W?=$V>)  
public class SelectionSort implements SortUtil.Sort { 7Zo&+  
PE|PwqX  
/* zw,-.fmM#  
* (non-Javadoc) \a?K?v|8  
* [u7 vY@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KS?mw`Nr  
*/ B%2L1T=  
public void sort(int[] data) { <_>.!9q  
int temp; (Hl8U  
for (int i = 0; i < data.length; i++) { 8H7O/n  
int lowIndex = i; k)|'JDm  
for (int j = data.length - 1; j > i; j--) { ZWFG?8lJ  
if (data[j] < data[lowIndex]) { #n=A)#'my  
lowIndex = j; [f=.!\0\  
} MSK'2+1T@g  
} yAAG2c4(  
SortUtil.swap(data,i,lowIndex); kq>GMUl~@  
} ](_{,P  
} ,TEuM|  
@W#fui<<}Y  
} LSSW.Oz2L  
z;[gEA+I  
Shell排序: L 43`^;u  
Ut]2`8-  
package org.rut.util.algorithm.support; 6zv;lx0<D&  
amMjuyW  
import org.rut.util.algorithm.SortUtil; GKiq0*/M  
{=s:P|ah  
/** "havi,m  
* @author treeroot ob)Q,;8R  
* @since 2006-2-2 D DQs42[  
* @version 1.0 {K<uM'ww>  
*/ {>wI8  
public class ShellSort implements SortUtil.Sort{ m"<4\;GK  
1B6C<cL:sU  
/* (non-Javadoc) 8~.iuFp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ';&0~[R[  
*/ Q! Kn|mnN  
public void sort(int[] data) { kkT3 wP  
for(int i=data.length/2;i>2;i/=2){ /8=:qIJYA  
for(int j=0;j insertSort(data,j,i); m5)EQE}gPp  
} xLe =d|6  
} E2Us#a  
insertSort(data,0,1); @+iC/  
} 4 #aqz9k  
%)8d{1at  
/** I ca3  
* @param data 4sb )^3T  
* @param j .F4oo=  
* @param i y+?=E g  
*/ +mivqR~{{  
private void insertSort(int[] data, int start, int inc) { D*CIE\+  
int temp; 3T" #T&eL  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); HmhUc,EC  
} /X@7ju;   
} :-w@^mli  
} #m[vn^8B]y  
@55bE\E?@  
} ^I@ey*$  
]Mn&76 fu  
快速排序: `<S/?I8  
ZEL/Ndk  
package org.rut.util.algorithm.support; 'CS^2Z  
mr@_ %U  
import org.rut.util.algorithm.SortUtil; N )'8o}E  
I0I_vu  
/** y>@v>S  
* @author treeroot RlU;v2Kch  
* @since 2006-2-2 B{;11 u  
* @version 1.0 mgo'MW\   
*/ 2IKxh  
public class QuickSort implements SortUtil.Sort{ ]#vWKNv:;  
Q.r B\8ea  
/* (non-Javadoc) tceIA8d6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ? UxG/]",  
*/ BO8%:/37[4  
public void sort(int[] data) { cC b>zI  
quickSort(data,0,data.length-1); ;>inT7?3|  
} 9@( O\xr  
private void quickSort(int[] data,int i,int j){ 5tN%a>D%  
int pivotIndex=(i+j)/2; Bh\ [ CY  
file://swap BXT 80a\  
SortUtil.swap(data,pivotIndex,j); n"XdHW0  
Tq9,c#}&  
int k=partition(data,i-1,j,data[j]); #x, ]D  
SortUtil.swap(data,k,j); 2ZU@>W  
if((k-i)>1) quickSort(data,i,k-1); sXSj OUI  
if((j-k)>1) quickSort(data,k+1,j); & 6`  
PXOrOK  
} T^KCB\\<  
/** 2.^7?ok  
* @param data  qJsQb  
* @param i .Q l;(Wyl  
* @param j %T3j8fC{s  
* @return hCU)W1q#  
*/ p#ZMABlE,P  
private int partition(int[] data, int l, int r,int pivot) { ' %bj9{(0  
do{ lf?Z{^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); TjKzBAX  
SortUtil.swap(data,l,r); [P.@1mV  
} g|tNa/  
while(l SortUtil.swap(data,l,r); 29R_n)ne  
return l; + #|'|}j  
} ;6DR .2}?>  
M /n[&  
} ~z\pI|DQ  
L@C >-F|p  
改进后的快速排序: #cw! &  
k\4g|Lya  
package org.rut.util.algorithm.support; @).WIs  
lH6Cd/a  
import org.rut.util.algorithm.SortUtil; ph Wc 8[Q  
:GN)7|:  
/** ~|X99?P  
* @author treeroot ODM>Z8@W/  
* @since 2006-2-2 9)G:::8u7  
* @version 1.0 ,$hQ(yF  
*/ SlH7-"Ag  
public class ImprovedQuickSort implements SortUtil.Sort { G/x3wR  
bl(BA}<  
private static int MAX_STACK_SIZE=4096; @"q~ AY  
private static int THRESHOLD=10; c28oLT1|D  
/* (non-Javadoc) PiIp<fJd$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^U0apI  
*/ yC9:sQ'k  
public void sort(int[] data) { / e~  
int[] stack=new int[MAX_STACK_SIZE]; n`FQgC  
F!z! :yp  
int top=-1; 2jI4V;H8g  
int pivot; 5O;/ lX!u  
int pivotIndex,l,r; [i,5>YIk  
)a4E&D  
stack[++top]=0; ,U|u-.~ZU  
stack[++top]=data.length-1; oN1!>S9m  
<[ g$N4  
while(top>0){ x]yHBc  
int j=stack[top--]; ')5jllxv  
int i=stack[top--]; iqU.a/~y  
!nP8ysB  
pivotIndex=(i+j)/2; cHqvkN`  
pivot=data[pivotIndex]; TzD:bKE&  
Y-}hNZn"{  
SortUtil.swap(data,pivotIndex,j); htdn$kqG   
~NNaLl  
file://partition ZaEBdBv  
l=i-1; 9m<X-B&P  
r=j; B`RW-14g  
do{ t[H_6)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |Fh`.iT%c  
SortUtil.swap(data,l,r); (P]^8qc  
} -9tXv+v?  
while(l SortUtil.swap(data,l,r); 4YU1Kr4  
SortUtil.swap(data,l,j); @O  @|M'  
d\1:1ucV  
if((l-i)>THRESHOLD){ aT`02X   
stack[++top]=i; |Oj,S|Z:  
stack[++top]=l-1; t<KEx^gb  
} EkfGw/WDw  
if((j-l)>THRESHOLD){ ^c;skV&S  
stack[++top]=l+1; (HTk;vbZm  
stack[++top]=j; Sgjr4axu  
} iTKG,$G  
?kT~)k  
} IdQwLt  
file://new InsertSort().sort(data); NO0[`jy(  
insertSort(data); EmBfiuX  
} f:)K  
/** tZJ 9}\r  
* @param data 0qaG#&!  
*/ `#IT24!  
private void insertSort(int[] data) { 2Wc;hJ.1  
int temp; 0X S' v,|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &CPe$'FYI  
} Og%zf1)aZM  
} eAenkUBz6,  
} e\|E; l  
-Z\UYt  
} ^q4:zZZ  
&H p\("  
归并排序: U_zpLpm^  
' /@!"IXz  
package org.rut.util.algorithm.support; *YE IG#`  
%]P@G^Bv  
import org.rut.util.algorithm.SortUtil; )Or:wFSMq  
.J7-4  
/** W4] 0qp`\  
* @author treeroot 0ghwFo  
* @since 2006-2-2 se*pkgWbz  
* @version 1.0 'Rar>oU  
*/ H'0J1\ h  
public class MergeSort implements SortUtil.Sort{ (cqA^.Td  
RIVN>G[;L  
/* (non-Javadoc) \:f}X?:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5]2!B b6>  
*/ n(F<  
public void sort(int[] data) { |'l* $  
int[] temp=new int[data.length]; *FG4!~<e  
mergeSort(data,temp,0,data.length-1); \-`oFe"  
} !gA^$(=:"  
tg m{gR  
private void mergeSort(int[] data,int[] temp,int l,int r){ Y9(i}uTi  
int mid=(l+r)/2; 0I AaPz/e  
if(l==r) return ; (WU~e!}  
mergeSort(data,temp,l,mid); p%M(G#gOgP  
mergeSort(data,temp,mid+1,r); zs]>XO~Jg  
for(int i=l;i<=r;i++){ 0UAr}H.:  
temp=data; ph|2lLZ  
} ph$&f0A6Xc  
int i1=l; /[)P^L`  
int i2=mid+1; |RbUmuj  
for(int cur=l;cur<=r;cur++){ "~,(Xa3x  
if(i1==mid+1) f*R_\  
data[cur]=temp[i2++]; G%x,t -  
else if(i2>r) ,~68~_)  
data[cur]=temp[i1++]; oq m{<g?2  
else if(temp[i1] data[cur]=temp[i1++]; ":#A>L? l  
else \Jj'60L^  
data[cur]=temp[i2++]; bKTwG@{/k  
} )8A=yrTIT  
} A<G ;  
V1+o3g{}  
} EXM/>PG  
eVbh$cIrZ  
改进后的归并排序: :-jP8X  
mm9S#Ya  
package org.rut.util.algorithm.support; cB{;Nh6"  
o@V/37!  
import org.rut.util.algorithm.SortUtil; @5nkI$>3z  
7$!Bq#  
/** 5'}!v  
* @author treeroot F@*r%[S/  
* @since 2006-2-2 ? wiq 3f6  
* @version 1.0 0BU:(o&  
*/ h"%,eW|^  
public class ImprovedMergeSort implements SortUtil.Sort { YUE 1 '}  
hE3jb.s(>  
private static final int THRESHOLD = 10; qcoZ2VJ hh  
Sv]"Y/N  
/* Z( clw  
* (non-Javadoc) N`mC_)  
* =P+wp{?AN|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cH8H)55F  
*/ f \%X 7.  
public void sort(int[] data) { =GS_ G;Dz  
int[] temp=new int[data.length]; 74!JPOpQH  
mergeSort(data,temp,0,data.length-1); uX 5B>32  
}  x+j/v5  
LSOwa  
private void mergeSort(int[] data, int[] temp, int l, int r) { 3 mMdq*X5  
int i, j, k; a*ixs'MJ  
int mid = (l + r) / 2; T?$?5  
if (l == r) U";Rp&\3;  
return; }lbx  
if ((mid - l) >= THRESHOLD) &[\arwe)  
mergeSort(data, temp, l, mid); '{_tDboY  
else gQzF C&g  
insertSort(data, l, mid - l + 1); peP:5WB  
if ((r - mid) > THRESHOLD) 5;%xqdD  
mergeSort(data, temp, mid + 1, r); 9<#R;eIsv  
else PyJblW  
insertSort(data, mid + 1, r - mid); FH@e:-*=  
\$++.%0  
for (i = l; i <= mid; i++) { _rWXcK3cjr  
temp = data; tbt9V2U:"n  
} 63\>MQcLy  
for (j = 1; j <= r - mid; j++) { ,kuFTWB  
temp[r - j + 1] = data[j + mid]; ="*C&wB^  
} JSP8Lu"n  
int a = temp[l]; < 2r#vmM  
int b = temp[r]; <L[)P{jn?p  
for (i = l, j = r, k = l; k <= r; k++) { H  "/e%  
if (a < b) { mi3q1npb7[  
data[k] = temp[i++]; 8XXTN@&,  
a = temp; -^%"w  
} else { RB 0j!H:  
data[k] = temp[j--]; = ~R3*GN  
b = temp[j]; >?\ !k c  
} O4+w2'.,  
} Ki 6BPi^  
}  6}ewBAq%  
/IR5[67  
/** l%V}'6T  
* @param data X>YOo~yS5  
* @param l wH5O>4LO  
* @param i x~I1(l7r  
*/ VY26 Cf"  
private void insertSort(int[] data, int start, int len) { HCCp<2D"C  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gnK!"!nL  
} IBHG1<3  
} Tl{r D(D  
} )4O`%9=M&  
} MjosA R  
:)S4MoG  
堆排序: z^a?t<+  
r]vBr^kq  
package org.rut.util.algorithm.support;  Z~:lfCK`  
lP &%5y;  
import org.rut.util.algorithm.SortUtil; Hw3 ES  
;( Va_   
/** w9}IM149  
* @author treeroot W..>Ny;'3  
* @since 2006-2-2 Ji:@z%osr  
* @version 1.0 2{qG  
*/ k0=y_7 =(5  
public class HeapSort implements SortUtil.Sort{ PhL5EYn  
2]KPW*V  
/* (non-Javadoc) :D7!6}%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DO*C]   
*/ Icb;Yzt  
public void sort(int[] data) { v2<gkCK^  
MaxHeap h=new MaxHeap(); 745PCC'FK  
h.init(data); lY,1 w  
for(int i=0;i h.remove(); ~DS9{Y  
System.arraycopy(h.queue,1,data,0,data.length); P?-44m#  
} e=$xn3)McY  
*)sz]g|d  
private static class MaxHeap{ eesLTy D2_  
>}tG^)os  
void init(int[] data){ m$j;FKz+|  
this.queue=new int[data.length+1]; ImW~Jy  
for(int i=0;i queue[++size]=data;  Ue Tp,  
fixUp(size); ? =Qg  
} clV/i&]Qa  
} %Q01EjRes  
4IpFT;`q  
private int size=0; ,)m-nZ5  
vUExS Z^  
private int[] queue; O\{_)L  
zL}DLfy>R  
public int get() { uU"s50m  
return queue[1]; 6!m#_z8qG3  
} f2XD^:Gc  
e;\c=J,eE  
public void remove() { a_j#l(] 9  
SortUtil.swap(queue,1,size--); p =O1aM  
fixDown(1); NX/)Z&Fx:  
} }e|]G,NZO  
file://fixdown ` &DiM@Sm  
private void fixDown(int k) { !I$RE?7eY  
int j; Sv",E@!f  
while ((j = k << 1) <= size) { At:C4>HE@  
if (j < size %26amp;%26amp; queue[j] j++; x=+H@YO\  
if (queue[k]>queue[j]) file://不用交换 !9Ni[8&Fg0  
break; @1X1E 2:  
SortUtil.swap(queue,j,k); [# H8Mb+7  
k = j; D]y.!D{l2  
} 9a,CiH%@  
} [X\2U4  
private void fixUp(int k) { b&&'b )  
while (k > 1) { w%na n=  
int j = k >> 1; cE?J]5#^  
if (queue[j]>queue[k]) yx4c+(J^8  
break; I>|?B( F  
SortUtil.swap(queue,j,k); j(N9%/4u  
k = j; 81 C?U5  
} ]C^*C|  
} <Z_`^~!  
xJlq2cK  
} ~Y[b QuA=)  
}x-8@9S~z  
} L@uKE jR  
xEqrs6sR  
SortUtil: eZo%q,L  
ObnB6ShKi  
package org.rut.util.algorithm; \`&fr+x  
A 2 )%+  
import org.rut.util.algorithm.support.BubbleSort; ~d]7 Cl  
import org.rut.util.algorithm.support.HeapSort; jeNEC&J  
import org.rut.util.algorithm.support.ImprovedMergeSort; .$;GVJ-:5  
import org.rut.util.algorithm.support.ImprovedQuickSort; Dbd5d]]n3  
import org.rut.util.algorithm.support.InsertSort; F*u;'K   
import org.rut.util.algorithm.support.MergeSort; c7 -j  
import org.rut.util.algorithm.support.QuickSort; |&.)_+w  
import org.rut.util.algorithm.support.SelectionSort; 4T-AWk  
import org.rut.util.algorithm.support.ShellSort; B(U`Zd  
m5*RB1  
/** ^%.<(:k[L  
* @author treeroot  \ Ld7fP  
* @since 2006-2-2 chbs9y0  
* @version 1.0 X+ jSB,  
*/ Vy VC#AK,  
public class SortUtil { /PlsF  
public final static int INSERT = 1; v'=APl+_  
public final static int BUBBLE = 2; )i>KgX  
public final static int SELECTION = 3; BGS6uV4^>  
public final static int SHELL = 4; ~b/>TKn+  
public final static int QUICK = 5; mB`r6'#=  
public final static int IMPROVED_QUICK = 6; c{q`uI;O  
public final static int MERGE = 7; W1z5|-T  
public final static int IMPROVED_MERGE = 8; =nl,5^  
public final static int HEAP = 9; fq'Of wT  
~1oD7=WN  
public static void sort(int[] data) { C_/oORvK  
sort(data, IMPROVED_QUICK); a6OT2B  
} P^ VNB  
private static String[] name={ b6ddXM\Z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9#7z jrB  
}; ~gD'up@$/  
V8/o@I{U[  
private static Sort[] impl=new Sort[]{ nEYJ?_55  
new InsertSort(), bC|~N0b  
new BubbleSort(), ?CC6/bE-{  
new SelectionSort(), TMrmyvv  
new ShellSort(),  '}=M~  
new QuickSort(), 5s9~rm  
new ImprovedQuickSort(), &R]G)f#w%*  
new MergeSort(), g& Rk}/F  
new ImprovedMergeSort(), fi)ypv*  
new HeapSort() $Z4p$o dk  
}; h kY E7  
Fu$otMw%l  
public static String toString(int algorithm){ A [JV*Dt  
return name[algorithm-1]; h2nyP  
} |qD<h  
s.U p<Rw  
public static void sort(int[] data, int algorithm) { o/xE O=AW  
impl[algorithm-1].sort(data); l;ugrAo?  
} !ibp/:x  
e;$s{CNo  
public static interface Sort { xnTky1zq  
public void sort(int[] data); N Jf''e3  
} *MNY1+RJ  
C*$/J\6xy  
public static void swap(int[] data, int i, int j) { >4c 1VEi  
int temp = data; 4^r}&9C ~  
data = data[j]; ME.LS2'n  
data[j] = temp; /[p4. FL  
} ?w+T_EH  
} Hs9uDGWp  
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