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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。 QjH;'OVt  
插入排序: "p>$^   
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package org.rut.util.algorithm.support; K8NoY6  
( zQ)EHRD  
import org.rut.util.algorithm.SortUtil; cU8Rm\?  
/** mm-!UsT  
* @author treeroot L3:dANG  
* @since 2006-2-2 8hWB TUN  
* @version 1.0 VXt8y)?a  
*/ S,Q!Xb@  
public class InsertSort implements SortUtil.Sort{ 8 wGq:@# =  
,at"Q$)T  
/* (non-Javadoc) @y%4BU&>0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WP,Ll\K)7  
*/ L[\m{gN  
public void sort(int[] data) { hwF9LD~^  
int temp; q) %F#g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n_;qB7,,  
} ^VsX9  
} i^j1 i  
} v"M5';ZS>  
D<}z7W-  
} _`yd"0 Ux  
yZup4#>8  
冒泡排序: =zw=J p  
4yhan/zA  
package org.rut.util.algorithm.support; i#/,Q1yEn  
g ycjIy@t  
import org.rut.util.algorithm.SortUtil; \lj.vzD-A  
JCoDe.  
/** $4K( AEt[  
* @author treeroot v~|~&Dwq  
* @since 2006-2-2 t']d_Vcza  
* @version 1.0 eF]`?AeWQ  
*/ "`P/j+-rt  
public class BubbleSort implements SortUtil.Sort{ GT$.#};u  
l,cnM r^.W  
/* (non-Javadoc) ^0A}iJL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RTN?[`  
*/ %@/"BF;r  
public void sort(int[] data) { *'5 )CC  
int temp; *v1M^grKd  
for(int i=0;i for(int j=data.length-1;j>i;j--){ L%G/%*7;c  
if(data[j] SortUtil.swap(data,j,j-1); %UIR GI  
} ;pk4Voo$  
} O@*7O~eO  
} USF9sF0l  
} &PY~m<F  
=MQpYX  
} wOW#A}m'vj  
TJ k3z^.j  
选择排序: pq8XCOllXx  
L=`QF'Im  
package org.rut.util.algorithm.support; !,D7L6N  
ZJL8"(/R  
import org.rut.util.algorithm.SortUtil; WiDl[l"{9  
yVF1*#"  
/** _=,\uIrk  
* @author treeroot @VdkmqXz  
* @since 2006-2-2 x`7Ch3`4}  
* @version 1.0 JmMB=} <  
*/ p~(+4uA  
public class SelectionSort implements SortUtil.Sort { %:yp>nm  
X<:B"rPuK  
/* Ynn:,  
* (non-Javadoc) ?vA)F)MS   
* 8 $5 y]%!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "LwLTPC2  
*/ zN3[W`q+m  
public void sort(int[] data) { ^?+qNbK  
int temp; &xhwx>C`K  
for (int i = 0; i < data.length; i++) { E6 g]EE  
int lowIndex = i; u^6@!M  
for (int j = data.length - 1; j > i; j--) { Lzr&Q(mL  
if (data[j] < data[lowIndex]) { @wvgMu  
lowIndex = j; HgGwV;W  
} -|z ]Ir  
} w\V1pu^6@  
SortUtil.swap(data,i,lowIndex); 3(2WO^zX {  
} pyHU +B  
} t`M4@1S"'  
]izrr  
} <v=$A]K  
jF$bCbAUce  
Shell排序: wDQ@$T^vh  
I45 kPfu  
package org.rut.util.algorithm.support; LiG!xs  
8ln{!,j;  
import org.rut.util.algorithm.SortUtil; RGu`Jk  
W)X" G3  
/** f 7R/i  
* @author treeroot "U"phLX  
* @since 2006-2-2 2Kkm-#p7  
* @version 1.0 ~mF^t7n]  
*/ V jdu9Ez  
public class ShellSort implements SortUtil.Sort{ `w6*(t:T  
Y9 /`w@"v  
/* (non-Javadoc) 40e(p/Qka  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ndmsXls  
*/ cv{icz,%w  
public void sort(int[] data) { b I-uF8"  
for(int i=data.length/2;i>2;i/=2){ +TZVx(Z&A  
for(int j=0;j insertSort(data,j,i); 0&~ JC>S  
} exZgk2[0  
} 5gq  
insertSort(data,0,1); uIy$| N  
} [+F6C  
I!?)}d  
/** |EGC1x]j=  
* @param data b F MBIA|  
* @param j f`s.|99Y  
* @param i 2/iBk'd  
*/ U!GfDt  
private void insertSort(int[] data, int start, int inc) { "X(9.6$_  
int temp; eP|_  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); aD&4C -,1  
} oO3X>y{gN  
} aBd>.]l?  
} O[|_~v:^  
_ea|E  8  
} S"cim\9xP  
ae#Qeow`  
快速排序: !DM GAt\  
ri2`M\;gt  
package org.rut.util.algorithm.support; K0{ ,*>C  
-l~+cI\2  
import org.rut.util.algorithm.SortUtil; nK)hv95i_  
DC~1}|B"  
/** V2S HF  
* @author treeroot Zet80|q  
* @since 2006-2-2 &X6hOc:``\  
* @version 1.0 #Y0ru9  
*/ KTE X]  
public class QuickSort implements SortUtil.Sort{ sE])EwZ  
;LC?3.  
/* (non-Javadoc) 7lx]`u>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6IJH%qUx'  
*/ Ie[DTy  
public void sort(int[] data) { #0:rBKm,  
quickSort(data,0,data.length-1); iOtf7.@  
} Ltk-1zhI  
private void quickSort(int[] data,int i,int j){ $T6+6<  
int pivotIndex=(i+j)/2; L%<DLe^P`l  
file://swap C{>dE:*K^  
SortUtil.swap(data,pivotIndex,j); )~CNh5z 6Y  
RB9ZaL\  
int k=partition(data,i-1,j,data[j]); ]wUH*\(y  
SortUtil.swap(data,k,j); c5Hyja=  
if((k-i)>1) quickSort(data,i,k-1); C[,&Y&`j  
if((j-k)>1) quickSort(data,k+1,j); \[d~O>k2  
VsDY,=Ww  
} ><qA+/4]_  
/** Nj.;mr<  
* @param data @V Sr'?7-  
* @param i s`|KT&r  
* @param j Ab8Ke|fA  
* @return (v&iXD5t  
*/ r)Ja\ ;  
private int partition(int[] data, int l, int r,int pivot) { w3&L 6|,  
do{ >IipWTVo<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7M~/[f7Z{  
SortUtil.swap(data,l,r); #itZ~tol  
} iZ4"@G:,  
while(l SortUtil.swap(data,l,r); }^ =f%EjV  
return l; U_RWqKL  
} $$XeCPs 0  
2$'bOo  
} Bh&dV%'  
k~?5mUyK<  
改进后的快速排序: fRHzY?n9;  
g""Ep  
package org.rut.util.algorithm.support; gfKv$~  
$}fY B/  
import org.rut.util.algorithm.SortUtil; P&yB(M-z  
e-%q!F(Bf  
/** FV{XPr%   
* @author treeroot x<7?  
* @since 2006-2-2 mW~*GD~r  
* @version 1.0 _h 6c[*  
*/ rs,'vV-2\  
public class ImprovedQuickSort implements SortUtil.Sort { qt6@]Y  
{vT9I4d8  
private static int MAX_STACK_SIZE=4096; XM#nb$gl  
private static int THRESHOLD=10; c|K:oi,z  
/* (non-Javadoc) !N!AO(Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;%k C?Vzi  
*/ !,C8  
public void sort(int[] data) { QMy1!:Z&!  
int[] stack=new int[MAX_STACK_SIZE]; h6}rOchj  
(g&@E(@]?  
int top=-1; saDu'SmYV  
int pivot; R}IuMMx  
int pivotIndex,l,r; ]re}EB\Rs  
% [~0<uO  
stack[++top]=0; C XNYWx  
stack[++top]=data.length-1; X\>/'fC$  
t,Q"Pt?  
while(top>0){ Q#*R({)GH  
int j=stack[top--]; KT7R0v  
int i=stack[top--]; `sg W0Uf  
F)Z9Qlo  
pivotIndex=(i+j)/2; ,6o tm  
pivot=data[pivotIndex]; Ypxp4B  
\cf'Hj}  
SortUtil.swap(data,pivotIndex,j); nyxoa/  
)."dqq^ q  
file://partition 4Xww(5?3  
l=i-1; Z~}9^(qc  
r=j; %$'fq*8b  
do{ PS=q):R|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); o wI:Qs_/4  
SortUtil.swap(data,l,r); U3{4GmrT  
} F/[m.!Eo  
while(l SortUtil.swap(data,l,r); /5Vv5d/Z4!  
SortUtil.swap(data,l,j); C7f*Q[  
#k[Y(_  
if((l-i)>THRESHOLD){ \ H#"  
stack[++top]=i; UoUQ6Ij  
stack[++top]=l-1; >_G'o  
} cYXL3)p*Q  
if((j-l)>THRESHOLD){ /k(wb4Hv  
stack[++top]=l+1; xE$lx:C"FU  
stack[++top]=j; jw 5 U-zi  
} mlUj%:Gm#  
8R-;cBT  
} @,-D P41g  
file://new InsertSort().sort(data); r. (}  
insertSort(data); s:(z;cj/  
} g!o2vTt5  
/** FC||6vJth  
* @param data +_u~Np  
*/ )[r=(6?n  
private void insertSort(int[] data) { y$_]}<b  
int temp; ,A)Z .OWOq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q_mxZM ->  
} !_;J@B  
} lC,~_Yb  
} q)KOI` A  
rk@qcQR  
} {^^LeUd#V  
!^v~hD$_q  
归并排序: @A(jo32  
Yx,7e(AI`  
package org.rut.util.algorithm.support; 3K/ 'K[~  
bNiJ"k<pN  
import org.rut.util.algorithm.SortUtil; bD|"c  
KaH e(  
/** ;Ru[^p.{  
* @author treeroot n:b,zssP  
* @since 2006-2-2 JnIG;/  
* @version 1.0 n%i L+I  
*/ 3bjCa\ "  
public class MergeSort implements SortUtil.Sort{ 9 `q(_\x  
Ro<x#Uo  
/* (non-Javadoc) jp@X,HES  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .tyV =B:h  
*/ mH5>50H;  
public void sort(int[] data) { wL^x9O|`p9  
int[] temp=new int[data.length]; Q2* 8c$  
mergeSort(data,temp,0,data.length-1); n<<arO"cv  
} %g3QE:(2@q  
P4c3kO0  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~ _tK.m3  
int mid=(l+r)/2; p>:.js5.a  
if(l==r) return ;  cz>)6#&O  
mergeSort(data,temp,l,mid); ggYi7Wzsd  
mergeSort(data,temp,mid+1,r); Zr A*MN  
for(int i=l;i<=r;i++){ -U?%A:,a|  
temp=data; GK6CnSV8d  
} jUR* |  
int i1=l; Cw kQhj?  
int i2=mid+1; ,1lW`Krx  
for(int cur=l;cur<=r;cur++){ hE'7M;  
if(i1==mid+1) 9f5~hBlo  
data[cur]=temp[i2++]; "{H{-`Ni  
else if(i2>r) ;E5XH"L\  
data[cur]=temp[i1++]; t}pYSSTz  
else if(temp[i1] data[cur]=temp[i1++]; c'Z)uquvP  
else O&~ @ior  
data[cur]=temp[i2++]; yf R0vp<&  
} t7xJ "  
} qs_cC3"=%=  
b E40^e  
} ^gpd '*b  
*-q &~  
改进后的归并排序: p} eO  
Ukf:m&G  
package org.rut.util.algorithm.support; p:{L fQ  
-ik((qx_  
import org.rut.util.algorithm.SortUtil; -;qK_x  
OPqhdqo  
/** &G\C[L  
* @author treeroot Jcs /i  
* @since 2006-2-2 w-v8 P`V  
* @version 1.0 (I>SqM Y  
*/ DZb0'+jQ  
public class ImprovedMergeSort implements SortUtil.Sort { R3)ccom  
Xq ew~R^MP  
private static final int THRESHOLD = 10; }S13]Kk?=  
wq1s#ag<  
/* i??+5o@uTF  
* (non-Javadoc) \Ov~ t  
* <pS#wTsN4%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mYXL  
*/ 6!*zgA5M'  
public void sort(int[] data) { oq1wU@n  
int[] temp=new int[data.length]; ?@Tsd@s~r  
mergeSort(data,temp,0,data.length-1); t0P_$+w.>  
} Tgi7RAY  
u3 &# UN  
private void mergeSort(int[] data, int[] temp, int l, int r) { Pmr'W\aIR  
int i, j, k; Nr]guC?rE  
int mid = (l + r) / 2; wZ `{ i  
if (l == r) $,I@c"m{  
return; J^~J&  
if ((mid - l) >= THRESHOLD) HoWK# Nz\  
mergeSort(data, temp, l, mid); "EWq{l_I5$  
else i-dosY`81  
insertSort(data, l, mid - l + 1); 0 EA3> $;  
if ((r - mid) > THRESHOLD) puEu)m^  
mergeSort(data, temp, mid + 1, r); "l#"c{ee{  
else pB%oFWqK  
insertSort(data, mid + 1, r - mid); iP$>/[I  
9 uX 15a  
for (i = l; i <= mid; i++) { 0Q cJ Ek  
temp = data; WBzPSnS2  
} f&] !;)  
for (j = 1; j <= r - mid; j++) { %)&Tr`   
temp[r - j + 1] = data[j + mid]; Y2g%{keo  
} u`!Dp$P  
int a = temp[l]; X>]<rEh  
int b = temp[r]; 2:yXeSeA  
for (i = l, j = r, k = l; k <= r; k++) { Hbu :HFJ!  
if (a < b) { v&f\ Jv7  
data[k] = temp[i++]; n2[h`zm1{B  
a = temp; &{q'$oF  
} else { r.=.,R  
data[k] = temp[j--]; C}9|e?R[Rz  
b = temp[j]; MdTu722  
} 3z"%ht~;  
} 9}q)AL-ga  
} a [f}-t9  
#9qX:*>h   
/** jD6T2K7i  
* @param data `sd H q  
* @param l <v\x<ul6  
* @param i h 3  J&  
*/ rvb@4-i>iI  
private void insertSort(int[] data, int start, int len) { .n?i' 8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'P%&*%  
} 9wdX#=I  
} 'RV wxd  
} {OS[0LB  
} D<*) ^^  
C9>^!?>  
堆排序: z`]:\j'O3"  
MOuEsm;  
package org.rut.util.algorithm.support; _m%Ab3iT~  
I3}I7oc_  
import org.rut.util.algorithm.SortUtil; 9h6siK(F  
R+Ug;r-[  
/** 4:kDBV;v  
* @author treeroot y+Bxe )6^V  
* @since 2006-2-2 JbXi|OS/  
* @version 1.0 #V Z js`d6  
*/ ~ D/1U)kt  
public class HeapSort implements SortUtil.Sort{ u|Ng>lU  
]2iEi`"[  
/* (non-Javadoc) j& L@L.d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1h{7dLA  
*/ %V#? 1{  
public void sort(int[] data) { j`MK\*qmz  
MaxHeap h=new MaxHeap(); #"[EVF0%1D  
h.init(data); 5tY/d=\k  
for(int i=0;i h.remove(); ~!/agLwY  
System.arraycopy(h.queue,1,data,0,data.length); V7 hO}  
} jk%H+<FU`  
acj-*I  
private static class MaxHeap{ c/Li,9cT'  
L#!m|_Mz  
void init(int[] data){ NpS =_QeNw  
this.queue=new int[data.length+1]; |jcIn[)=  
for(int i=0;i queue[++size]=data; aT BFF  
fixUp(size); TT&%[A+  
} ]?Q<lMG  
} ?&VKZSo  
LFvZ 7M\\  
private int size=0; ( F4c0  
RE08\gNIt  
private int[] queue; $1k@O@F(4  
 C8} ;,  
public int get() { q&LCMnv"P  
return queue[1]; NT9|``^Z  
} S{,|Fa^PPO  
P5lk3Zg '  
public void remove() { EWOa2^%}Z\  
SortUtil.swap(queue,1,size--); Xu|2@?l9  
fixDown(1); V$dhiP z  
} & +yo PF  
file://fixdown F;BCSoO4  
private void fixDown(int k) { a`LkP%  
int j; \(r$f!`  
while ((j = k << 1) <= size) { Hk=HO|&<XB  
if (j < size %26amp;%26amp; queue[j] j++; =uR3|U(.|u  
if (queue[k]>queue[j]) file://不用交换 v3<q_J'qT  
break; o1uM(  
SortUtil.swap(queue,j,k); 'c3'eJ0  
k = j; Q&/WVRD  
} rU 1Ri  
} "|V}[ 2  
private void fixUp(int k) { ^|2m&2  
while (k > 1) { n+k,:O5  
int j = k >> 1; )RQQhB  
if (queue[j]>queue[k]) js% n]$N  
break; |f(*R_R  
SortUtil.swap(queue,j,k); Hlpt zez  
k = j; M0`1o p1  
} '~1Zr uO  
} Ty7)j]b"zl  
0?O_]SD  
} DhD##5a  
g1(5QWb  
} kO$n0y5e  
hFxT@I~  
SortUtil: {SD%{  
A;o({9VH`Z  
package org.rut.util.algorithm; ~ H/ZiBL@  
NQqNBI?cr  
import org.rut.util.algorithm.support.BubbleSort; [70 5[  
import org.rut.util.algorithm.support.HeapSort; $RUK<JN$6  
import org.rut.util.algorithm.support.ImprovedMergeSort; m_,Jbf  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5u3KL A  
import org.rut.util.algorithm.support.InsertSort; [(&aVHUj  
import org.rut.util.algorithm.support.MergeSort; 4t3>`x 7  
import org.rut.util.algorithm.support.QuickSort; JAT%s %UC  
import org.rut.util.algorithm.support.SelectionSort; $`lm]} {&  
import org.rut.util.algorithm.support.ShellSort; 2A9crL $  
*xY3F8  
/** 1kR. .p<"  
* @author treeroot '?g&);4)k-  
* @since 2006-2-2 Wh~,?}laj  
* @version 1.0 o wb+,Gk(  
*/ C ,|9VH  
public class SortUtil { zQ<;3+*  
public final static int INSERT = 1; 5%}!z~8Y4  
public final static int BUBBLE = 2; S.q0L  
public final static int SELECTION = 3; ,KU%"{6  
public final static int SHELL = 4; UBk:B  
public final static int QUICK = 5; oN%zpz;OR  
public final static int IMPROVED_QUICK = 6; ]cVDXLj$  
public final static int MERGE = 7; oe0YxSauL  
public final static int IMPROVED_MERGE = 8; T<NOL fk66  
public final static int HEAP = 9; .D\oKhV(  
'cQ,;y  
public static void sort(int[] data) { 5SmJ'zFO  
sort(data, IMPROVED_QUICK); dQ9W40g1  
} [Q J  
private static String[] name={ `!(%R k  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" } #L_R  
}; /e*fsQ>M:  
c2fSpvz  
private static Sort[] impl=new Sort[]{ @+Sr~:K  
new InsertSort(), o?j8"^!7  
new BubbleSort(), %e3E}m>  
new SelectionSort(), _ qwf3Q@  
new ShellSort(), )N607 Fa-  
new QuickSort(), <r`;$K  
new ImprovedQuickSort(), "@/pQoLy  
new MergeSort(), uOy/c 8`  
new ImprovedMergeSort(), >goHQ30:  
new HeapSort() ^;.u }W  
}; 3EY m@oZj  
2FV@ ?x0po  
public static String toString(int algorithm){ yFQaNuZPC  
return name[algorithm-1]; yNn=r;FZQ  
} }#%Y eCA?  
vyB{35p$  
public static void sort(int[] data, int algorithm) { \%.oi@A  
impl[algorithm-1].sort(data); y'I m/{9U  
} 96QY0  
hsS&|7Pt  
public static interface Sort { +PI}$c-|`  
public void sort(int[] data); r jxkgd  
} A#19&}  
,Owk;MV@  
public static void swap(int[] data, int i, int j) { BX[ IWP\%  
int temp = data; WcKDerc  
data = data[j]; QH(&Cu,  
data[j] = temp; b=MW;]F  
} {*O+vtir%  
} |U{~t<BF#  
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