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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= =_43  
插入排序: .kgt? r  
9o3?  
package org.rut.util.algorithm.support; k-)Ls~#+  
2h)Qz+|7  
import org.rut.util.algorithm.SortUtil; }KEr@h,N  
/** *u< ZQq  
* @author treeroot ToD_9i }6  
* @since 2006-2-2 D.ySnYzh  
* @version 1.0 2zuQeFsK  
*/ Yvu?M8aK!  
public class InsertSort implements SortUtil.Sort{ ,/!^ZS*  
#u +~ ^M  
/* (non-Javadoc) HuQdQ*Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vTIRydg2b  
*/ t >.=q:  
public void sort(int[] data) { . lNf.x#u  
int temp; EG3u)}vI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ynp#3 r  
} _1~pG)y$U  
} Vjd>j; H  
} Tk `|{Ph0  
vcaPd}nf  
} `}rk1rl6  
K6|R ;r5e{  
冒泡排序: 8NTE`l=>/  
Qd>\{$N  
package org.rut.util.algorithm.support; z*9 ke  
JY~CMR5#.O  
import org.rut.util.algorithm.SortUtil; =1<v1s|)q  
MT$)A:"  
/** 8Dn~U :F/?  
* @author treeroot wzBw5n f\  
* @since 2006-2-2 py'xB i6}v  
* @version 1.0 ) t CNp  
*/ g${k8.TV  
public class BubbleSort implements SortUtil.Sort{ {i}E)Np  
k+Z2)j"  
/* (non-Javadoc) [khXAf1{Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g}L>k}I?!W  
*/ (A "yE4rYK  
public void sort(int[] data) { l kyK  
int temp; 2IUd?i3~l  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;mPX8bT  
if(data[j] SortUtil.swap(data,j,j-1); tg\o"QKW9  
} P]armg%  
} b[:{\ !I  
} _KkP{g,Y  
} xV=Tmu6l  
Mz\l C)\B  
} ,_Kr}RH  
<y&&{*KW8m  
选择排序: Ys&)5j-  
;k ,@^f8  
package org.rut.util.algorithm.support; :+"H h%  
2gR*]?C*  
import org.rut.util.algorithm.SortUtil; 1+YqdDqQ  
P+QL||>L  
/** syI|gANT/r  
* @author treeroot 'g3T'2"`5  
* @since 2006-2-2 +(^H L3  
* @version 1.0 9[sOh<W  
*/ u(\O@5a  
public class SelectionSort implements SortUtil.Sort { -Zp BYX5e_  
!SIk9~rJ  
/* sV\K[4HG  
* (non-Javadoc) dlIYzO<  
* 0?dr(   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ia_l P  
*/ "M3;>"`G  
public void sort(int[] data) { (t@ :dW  
int temp; S5d  
for (int i = 0; i < data.length; i++) { \f)GW$`  
int lowIndex = i; 1l Cr?  
for (int j = data.length - 1; j > i; j--) { W+$G{XSr5C  
if (data[j] < data[lowIndex]) { =%c\<<]aV  
lowIndex = j; PC|ul{[*}  
} .t/@d(R  
} ,Q0H)// ~  
SortUtil.swap(data,i,lowIndex); M |f V7g  
} ]hoq!:>M1  
} 0G0(g,3p  
Hmnxm gx  
} {^1''  
AWKJ@&pA9m  
Shell排序: > >KCd  
Ps{vN ~}  
package org.rut.util.algorithm.support; a6 1!j>Kx  
O;|Cu7WU  
import org.rut.util.algorithm.SortUtil; kX8NRPW  
iq[IZdza  
/** xc\zRsY`  
* @author treeroot d325Cw?  
* @since 2006-2-2 vm'ZA7f6  
* @version 1.0 CPMGsW^  
*/ '4Fwh]Ee  
public class ShellSort implements SortUtil.Sort{ 9y<h.T  
-4zV yW S<  
/* (non-Javadoc) L"n)fe$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6U.|0mG[  
*/ &/WE{W  
public void sort(int[] data) { ~E!kx  
for(int i=data.length/2;i>2;i/=2){ | L1+7  
for(int j=0;j insertSort(data,j,i); 5t"FNL <(M  
} DfP-(Lm)  
} Iy&,1CI"]  
insertSort(data,0,1); !a-B=pn!]  
} 0!7p5  
! Dj2/][  
/** V; CPn  
* @param data S!+>{JyQ  
* @param j y@I t#!u0  
* @param i o]<9wc:FZ  
*/ a^pbBDi W  
private void insertSort(int[] data, int start, int inc) { Jazgn5  
int temp; A.dbb'^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'W yWO^Bdk  
} akU2ToP  
} {]Hv*{ ]  
} /-G_0 A2wF  
ai-rF^ehC  
} Bc[~'gn  
w,$qsmR  
快速排序: U+@U/s%8  
[.1ME lM  
package org.rut.util.algorithm.support; PMV,*`"9"A  
RtzSe$O  
import org.rut.util.algorithm.SortUtil; :GO"bsjL  
LO>42o?/i  
/** WmN( (  
* @author treeroot A`ajsZ{q,  
* @since 2006-2-2 -]H~D4ng  
* @version 1.0 "aCAA#$J  
*/ e,MsF4'  
public class QuickSort implements SortUtil.Sort{ ;R[3nb9%  
kS:#|yY8%  
/* (non-Javadoc) ?Rx(@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3RT\G0?8f  
*/ *8/Xh)B;  
public void sort(int[] data) { lg~7[=%k#  
quickSort(data,0,data.length-1); $|.8@ nj  
} ^B% =P  
private void quickSort(int[] data,int i,int j){ l-l7jq]R  
int pivotIndex=(i+j)/2; V 3cKbk7~  
file://swap nS*Y+Q^9a  
SortUtil.swap(data,pivotIndex,j); % hvK;B?Y|  
Jk6}hUH,  
int k=partition(data,i-1,j,data[j]); \m G Y'0  
SortUtil.swap(data,k,j); $2L6:&.P,  
if((k-i)>1) quickSort(data,i,k-1); 6CIzT.  
if((j-k)>1) quickSort(data,k+1,j); -p.\fvip  
ZcQu9XDIt  
} va'F '|  
/** e)g &q'O  
* @param data n=vDEX:'  
* @param i *{!Y_FrL  
* @param j fzQR0  
* @return $R1I(sJ  
*/ ,0 q1Id  
private int partition(int[] data, int l, int r,int pivot) { ]MosiMJF  
do{ h0@a"DqK  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); f$ xp74hw3  
SortUtil.swap(data,l,r); d6YXITL)\>  
} U/QgO  
while(l SortUtil.swap(data,l,r); |#kY_d)10  
return l; rUj\F9*5#  
} ]b!n ;{5  
-` U |5  
} voRry6Q;  
v#d\YV{I  
改进后的快速排序: k[;)/LfhS  
<\u3p3"[4  
package org.rut.util.algorithm.support; IrqM_OjC  
oDz|%N2s|  
import org.rut.util.algorithm.SortUtil; E)gD"^rex  
R=lw}jH[Z  
/** ;*M@LP{*L  
* @author treeroot "J1A9|  
* @since 2006-2-2 ?<TJ}("/  
* @version 1.0 49$<:{~  
*/ Y(.e e%;,  
public class ImprovedQuickSort implements SortUtil.Sort { h @!p:]  
hx$61 E=  
private static int MAX_STACK_SIZE=4096; :Kwu{<rJ!(  
private static int THRESHOLD=10; <f>w"r  
/* (non-Javadoc) \7r0]& _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wye* ~t  
*/ ]VRa4ZB{u  
public void sort(int[] data) { Qs6Vu)U=  
int[] stack=new int[MAX_STACK_SIZE]; Nc7"`!;-   
|Ev|A9J!  
int top=-1; d8wVhZKI"  
int pivot; &aLTy&8Fv  
int pivotIndex,l,r;  D}98ZKi  
30! DraW8  
stack[++top]=0; (WyNO QO'  
stack[++top]=data.length-1; $Es\ld  
fRQ,Z  
while(top>0){ 0\P5=hD)K  
int j=stack[top--]; >.d/@3 '  
int i=stack[top--]; o$sD9xx  
%o0b~R  
pivotIndex=(i+j)/2; P0,]`w  
pivot=data[pivotIndex]; IR6W'vA  
@MES.g  
SortUtil.swap(data,pivotIndex,j); / \w4k  
f^ui Zb  
file://partition 4]h/t&ppq  
l=i-1; WiS3W;  
r=j; rPaJ<>Kz  
do{ &q-&%~E@  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <+oh\y16  
SortUtil.swap(data,l,r); \9)5b8  
} Hd|[>4Z  
while(l SortUtil.swap(data,l,r); D_DwP$wSo  
SortUtil.swap(data,l,j); k&ci5MpN  
&zdS9e-fF  
if((l-i)>THRESHOLD){ ""0 Y^M2I  
stack[++top]=i; Rql/@j`JX  
stack[++top]=l-1; ga 5Q  
} 9\_AB.Z:  
if((j-l)>THRESHOLD){ /?'~`4!(  
stack[++top]=l+1; K ze?@*  
stack[++top]=j; M:/NW-:  
} {EoYU\x  
nK1eh@a9Qv  
} 0K%okq|n  
file://new InsertSort().sort(data); NP T-d  
insertSort(data); DM^0[3XuV5  
} R| ?Q&F_$  
/** ~~W.]>f  
* @param data djdTh +>28  
*/ WNGX`V,d  
private void insertSort(int[] data) { 8G:/f3B=  
int temp; o$*(N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <fvu) f  
} Nw*<e ]uD  
} W"c\/]aD  
} 1<r!9x9G  
V~*Gk!+f  
} l=CAr  
XV]N}~h o`  
归并排序: U>2KjZB  
9 C[~*,qx  
package org.rut.util.algorithm.support; Nk7y2[  
NUV">i.(  
import org.rut.util.algorithm.SortUtil; n n7LL+h  
Q,KNZxT,q  
/** 6!\V|  
* @author treeroot ywwA,9~  
* @since 2006-2-2 |Ea%nghl  
* @version 1.0 Bl b#h  
*/ \l GD8@,x  
public class MergeSort implements SortUtil.Sort{ sFpg  
C+NN.5No  
/* (non-Javadoc) ``l*;}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xMjhC;i{  
*/ <_Yd N)x  
public void sort(int[] data) { u7< +)6-  
int[] temp=new int[data.length]; D$}hoM1  
mergeSort(data,temp,0,data.length-1); gi!_Nz  
} m _)-  
ZNBowZI  
private void mergeSort(int[] data,int[] temp,int l,int r){ ` UsJaoR#f  
int mid=(l+r)/2; ?Lg<)B9   
if(l==r) return ; cq I $9  
mergeSort(data,temp,l,mid); |+ F ~zIu'  
mergeSort(data,temp,mid+1,r); mw"FQ?bJ  
for(int i=l;i<=r;i++){ hEZvi   
temp=data; *K/K97  
} 5iA>Z!sP[  
int i1=l; 50_[hC&C)  
int i2=mid+1; wH~A> 4*(  
for(int cur=l;cur<=r;cur++){ <m-(B"F X  
if(i1==mid+1) 7Eyi~jes  
data[cur]=temp[i2++]; 2I B{FO/  
else if(i2>r) p1UloG\  
data[cur]=temp[i1++]; a=MN:s?Fc0  
else if(temp[i1] data[cur]=temp[i1++];  0s;~9>  
else xS|9Gk  
data[cur]=temp[i2++]; _.s ,gX  
} Qt.*Z;Gs  
} s5*4<VxQN.  
`%Ih'(ne  
} VIAq$iu7  
?|5M'o|9  
改进后的归并排序: &#PPXwmR  
2.^{4 1:  
package org.rut.util.algorithm.support; r&LZH.$oh  
v'hc-Q9+>  
import org.rut.util.algorithm.SortUtil; 0D,@^vw bK  
v`|]57?A  
/** h@ lz  
* @author treeroot cEL:5*cAU}  
* @since 2006-2-2 ?}?"m:=  
* @version 1.0 [icD*N<Gc  
*/ x#0?$}f<  
public class ImprovedMergeSort implements SortUtil.Sort { Qder8I  
mx9vjW fy  
private static final int THRESHOLD = 10; s@Q7F{z  
p"0#G&-  
/* 1 uU$V =  
* (non-Javadoc) ?Bu*%+  
* 0nt@}\j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DtANb^  
*/ !<];N0nt#  
public void sort(int[] data) { %+'Ex]B  
int[] temp=new int[data.length]; {"]!zL  
mergeSort(data,temp,0,data.length-1); 2^'Ec:|f  
} ys`-QlkB  
XUP{]w`.Z  
private void mergeSort(int[] data, int[] temp, int l, int r) { HT.,BF  
int i, j, k; chICc</l&  
int mid = (l + r) / 2; xNIrmqm5]  
if (l == r) A+l(ew5Lw$  
return; T,!EL +o4  
if ((mid - l) >= THRESHOLD) %"{P?V<-V  
mergeSort(data, temp, l, mid); mqZK1<r  
else FAM{p=t]HT  
insertSort(data, l, mid - l + 1); Au2?f~#Fv  
if ((r - mid) > THRESHOLD) a"@f< wU~  
mergeSort(data, temp, mid + 1, r); lAnq2j|  
else V*n$$-5 1-  
insertSort(data, mid + 1, r - mid); wNmpUO ?  
\c\~k0u  
for (i = l; i <= mid; i++) { iy~h|YK;  
temp = data; 'w ,gYW  
} KS*,'hvY  
for (j = 1; j <= r - mid; j++) { ,7wYa&  
temp[r - j + 1] = data[j + mid];  dfFw6R  
} c'Z=uL<Rm  
int a = temp[l]; O>DS%6/G  
int b = temp[r]; y]Nk^ga:U6  
for (i = l, j = r, k = l; k <= r; k++) { =q VT  
if (a < b) { =2$ ( tXL  
data[k] = temp[i++]; C_J@:HlJ  
a = temp; uX-^ 9t  
} else { 1{N+B#*<[X  
data[k] = temp[j--]; v? ."`,e  
b = temp[j]; ]njNSn  
} k^cZePqE6d  
} L-(bw3Yr>  
} gY7sf1\wX  
EK# 11@0%  
/** Phi5;U!  
* @param data QD7KE6KP'  
* @param l O+W<l:|$  
* @param i cvsH-uAp  
*/ -*7i:mg  
private void insertSort(int[] data, int start, int len) { VJ\qp%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +c% jOl  
} T+L=GnYl  
} OJu>#   
} @aQ:3/  
} #QFz /6  
9\EW~OgTu  
堆排序: }.o.*N  
AE:(:U\  
package org.rut.util.algorithm.support; iZG-ca  
g-K;J4 K%  
import org.rut.util.algorithm.SortUtil; cg{5\ Vl  
#TNjQNg@O  
/** P;.roD9  
* @author treeroot s4|tWfZ  
* @since 2006-2-2 9`Qa/Y!  
* @version 1.0 z I2DQ] 9  
*/ R3G\Gchd  
public class HeapSort implements SortUtil.Sort{ f" Iui  
2|j=^  
/* (non-Javadoc) 1 3 ]e< '  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *IOrv)  
*/ |? V7E\S  
public void sort(int[] data) { W(]A^C=/  
MaxHeap h=new MaxHeap(); kSV(T'#x  
h.init(data); ^mL X}E]  
for(int i=0;i h.remove(); {ENd]@N*  
System.arraycopy(h.queue,1,data,0,data.length); :#g.%&  
} fNLO%\G~2  
(nQm9 M(  
private static class MaxHeap{ poAJl;T  
(d#&m+ g]  
void init(int[] data){ ry|a_3X(I  
this.queue=new int[data.length+1]; E#_/#J]UQn  
for(int i=0;i queue[++size]=data; XQ=%a5w  
fixUp(size); dm}1"BU<  
} lW5Lwyt8  
} {> ,M  
)jXKPLj  
private int size=0; :h(RS ;  
i[[.1MnS  
private int[] queue; (nO2+@ !  
K+|XI|1p  
public int get() { -Kg.w*\H7/  
return queue[1]; aB6/-T+ u  
} f_)#  
s=:)!M.i  
public void remove() { 6hj[/O)E  
SortUtil.swap(queue,1,size--); Y-bTKSn  
fixDown(1); +ZbNSN=  
} VLV]e_D6s  
file://fixdown y7/4u-_c  
private void fixDown(int k) { JOG- i  
int j; 4L,wBce;,t  
while ((j = k << 1) <= size) { S(CkA\[rz  
if (j < size %26amp;%26amp; queue[j] j++; SZXSVz0j  
if (queue[k]>queue[j]) file://不用交换 3UXZ|!-  
break; g$NUu  
SortUtil.swap(queue,j,k); x:0swZ5Z  
k = j; AM=> P 7  
} k6"(\d9o  
} Pm6U:RL  
private void fixUp(int k) { &OJ?Za@p@)  
while (k > 1) { hY!ek;/Gc  
int j = k >> 1; 6~sU[thGW  
if (queue[j]>queue[k]) M @KQOAzt  
break; l@&-be  
SortUtil.swap(queue,j,k); <lR:^M[v5<  
k = j; {J)%6eL?  
} 2OpA1$n6  
} sSfP.R  
x"sbm  
} D7nK"]HG;l  
T%oJmp?0  
} tm/ >H  
P>rRD`Yy\  
SortUtil: L+G0/G}O\  
mxZ+r#|di  
package org.rut.util.algorithm; {96MfhkeBv  
:[+8(~| za  
import org.rut.util.algorithm.support.BubbleSort; [ >mH  
import org.rut.util.algorithm.support.HeapSort; kSiyMDY-  
import org.rut.util.algorithm.support.ImprovedMergeSort; E[#VWM I  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]&H"EHC<$  
import org.rut.util.algorithm.support.InsertSort; ;%d<Uk?  
import org.rut.util.algorithm.support.MergeSort; U]}FA2  
import org.rut.util.algorithm.support.QuickSort; eH7x>[lH.  
import org.rut.util.algorithm.support.SelectionSort; U"/T`f'H z  
import org.rut.util.algorithm.support.ShellSort; ^[.}DNR95(  
Q>Klkd5(  
/** /&|p7  
* @author treeroot . q -: 3b  
* @since 2006-2-2 3 1c*^ZE.  
* @version 1.0 U2?R&c;b  
*/ [-[59 H[6)  
public class SortUtil { C) R hld  
public final static int INSERT = 1; y;CX )!8  
public final static int BUBBLE = 2; pYzop4  
public final static int SELECTION = 3; dhA~Yu  
public final static int SHELL = 4; 2]?=\_T  
public final static int QUICK = 5; ,\iXZ5"R  
public final static int IMPROVED_QUICK = 6; 59{X;  
public final static int MERGE = 7; 'm`}XGUBS  
public final static int IMPROVED_MERGE = 8; . s>@@m-  
public final static int HEAP = 9; K" VcPDK  
5?H wM[`  
public static void sort(int[] data) { N@tKgx  
sort(data, IMPROVED_QUICK); ~tWh6-:|{J  
} _BA; H+M  
private static String[] name={ LI@BB:)[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #8M?y*<I  
};  :QP1!  
~}j+~  
private static Sort[] impl=new Sort[]{ )EB+(c~E  
new InsertSort(), vu@.;-2E%  
new BubbleSort(), 'fl.&"/r  
new SelectionSort(), @@^iN~uf  
new ShellSort(), _f";zd  
new QuickSort(), B<L7`xL  
new ImprovedQuickSort(), T5|kO:CbHq  
new MergeSort(), ~n@rX=Y)]0  
new ImprovedMergeSort(), aL[6}U0(}  
new HeapSort() sM MtU@<x  
}; #S9J9k  
{|>Wwa2e  
public static String toString(int algorithm){ XQn1B3k+  
return name[algorithm-1]; N,K/Ya)1  
} wH!$TAZ:Yw  
j24 3oD  
public static void sort(int[] data, int algorithm) { "P#1=  
impl[algorithm-1].sort(data); Dfzj/spFV  
} J)n_u),  
r@C~_LgL)  
public static interface Sort { gIz!~I_U  
public void sort(int[] data); V'{\g|)  
} UA*VqK)Y  
,DE>:ARZ  
public static void swap(int[] data, int i, int j) { Jn=;gtD- *  
int temp = data; FHU6o910  
data = data[j]; P~{8L.w!>W  
data[j] = temp; .e0)@}Jv8>  
} bKmwXDv'  
} b9X*2pnWJ  
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3+5=?,请输入中文答案:八 正确答案:八