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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。 !%YV0O0  
插入排序: "cX*GTNi8  
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package org.rut.util.algorithm.support; v:Z.8m8D  
FuO'%3;c  
import org.rut.util.algorithm.SortUtil; gx6$:j;   
/** PF-"^2&_  
* @author treeroot -cWxS{vO  
* @since 2006-2-2 &M+fb4:_  
* @version 1.0 L3X[; |v}  
*/ +DP{_x)t  
public class InsertSort implements SortUtil.Sort{ Z+x`q#ZQr  
.Ue1}'v*,  
/* (non-Javadoc) i9y&<^<W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y&`nB,'  
*/ qXQ7Jg9  
public void sort(int[] data) { 2o-Ie/"d\  
int temp; X6: c-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jiAN8t*P  
} Yc1ve  
} Uzd\#edxJ  
} MQGR-WV=5  
mkt%|Kb.  
} #k<j`0kiq  
. vQCX1V(  
冒泡排序: T=->~@5  
C9FQo7   
package org.rut.util.algorithm.support; 8Dy;'BtT  
9!oNyqQ  
import org.rut.util.algorithm.SortUtil; !`#xFRHe  
'x!5fAy  
/** 421ol  
* @author treeroot tsu Mt  
* @since 2006-2-2 DU-&bm  
* @version 1.0 G2}e@L0  
*/ +eD+Z.{  
public class BubbleSort implements SortUtil.Sort{ ) %&~CW+  
xA2 "i2k9  
/* (non-Javadoc) ,_2ZKO/k$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :*/`"M)'  
*/ Ta3qEVs  
public void sort(int[] data) { S-k:+4  
int temp; `>cBR,)r  
for(int i=0;i for(int j=data.length-1;j>i;j--){ weky 5(:  
if(data[j] SortUtil.swap(data,j,j-1); "i;c)ZP  
} Do5)ilt  
} *R6Ed  
} 8z h{?0  
} ri k0F  
vMV}M%~  
} 2bk~6Osp  
Grw|8xN0t  
选择排序: 6S# e?>"+  
>HY( Ij<  
package org.rut.util.algorithm.support; -(]s!,  
rt[w yz8  
import org.rut.util.algorithm.SortUtil; %^$7z,>;  
%0!!998  
/** lUd;u*A  
* @author treeroot 9vZD?6D,n  
* @since 2006-2-2 jRP9e  
* @version 1.0 >ps=z$4j*  
*/ Qs5^kddz=  
public class SelectionSort implements SortUtil.Sort { <r'l5|er  
 iFy_ D  
/* /!mF,oR!  
* (non-Javadoc) CQx#Xp>=s  
* k*3F7']8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i7/I8y  
*/ 09SLQVo  
public void sort(int[] data) { ``Wf%~  
int temp; :_FnQhzg  
for (int i = 0; i < data.length; i++) { 'dstAlt?  
int lowIndex = i; x4C}AyR  
for (int j = data.length - 1; j > i; j--) { IE|$mUabm  
if (data[j] < data[lowIndex]) { plRBfw>]N  
lowIndex = j; Z4 +6'  
} sV)) Z2sq  
} U\ Et  
SortUtil.swap(data,i,lowIndex); xQ=sZv^M  
} |99/?T-QW  
} B~RVFc +  
jLRh/pbz4  
} [Grd?mc#  
%|:Gn)8  
Shell排序: OJGEX}3'  
D 1Q@4  g  
package org.rut.util.algorithm.support; TUQ+?[  
#Jo#[-r  
import org.rut.util.algorithm.SortUtil; uoM;p'  
8i=c|k,GL.  
/** >vPDF+u  
* @author treeroot <n)J~B^  
* @since 2006-2-2 Az}.Z'LJ  
* @version 1.0 5mxYzu;#]  
*/ bZE;}d  
public class ShellSort implements SortUtil.Sort{ gua +-##)  
Pde|$!Jo  
/* (non-Javadoc) 2L<iIBSJwm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Be=J*D!E=>  
*/ &?R2zfcM  
public void sort(int[] data) { .S l{m[nV8  
for(int i=data.length/2;i>2;i/=2){ `5V=U9zdE  
for(int j=0;j insertSort(data,j,i); McRAy%{z  
} c&{1Z&Y  
} .K=r.tf~  
insertSort(data,0,1); ?+]prbt)  
} 3~I|KF7x  
UbD1h_b  
/** gkJL=,  
* @param data QxSJLi7t  
* @param j 6V"|  
* @param i 3++}4%w  
*/ R aVOZ=^-  
private void insertSort(int[] data, int start, int inc) { "%o,P/<X  
int temp; :ub 4p4h*  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); OD*\<Sc  
} csceu+ IA  
} lTe7n'y^^  
} KxZO.>,  
Q M#1XbT  
} L9|55z  
^usZ&9"@P  
快速排序: J4yL"iMt  
Ry@QJn I<  
package org.rut.util.algorithm.support; UE-<  
o7/S'Haxc]  
import org.rut.util.algorithm.SortUtil; E<j}"W$a  
p(jY2&g  
/** pSjJ u D  
* @author treeroot 0]3 ,0s $}  
* @since 2006-2-2 hV(>}hb  
* @version 1.0 |Va*=@&6J  
*/ G E=J Y  
public class QuickSort implements SortUtil.Sort{  I~'%  
lEcZ/  
/* (non-Javadoc) 3@qy}Nm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S'Hb5C2u  
*/ #H'j;=]:  
public void sort(int[] data) { _2eRH@T  
quickSort(data,0,data.length-1); O_zW/#  
} LW={| 3}  
private void quickSort(int[] data,int i,int j){ P=.yXirm?  
int pivotIndex=(i+j)/2; mv5=>Xc6  
file://swap +VJS/  
SortUtil.swap(data,pivotIndex,j); laR cEXj  
#Tz$ona  
int k=partition(data,i-1,j,data[j]); a.n;ika]-  
SortUtil.swap(data,k,j); BGtr=&Hq  
if((k-i)>1) quickSort(data,i,k-1); B6N/nCvHK  
if((j-k)>1) quickSort(data,k+1,j); n{d0}N =  
#41xzN  
} ^#|Sl D]  
/** $pKlF0 .  
* @param data /6=IL  
* @param i UZ5O%SF  
* @param j skd3E4  
* @return R cZg/{[{  
*/ -B`Nkc  
private int partition(int[] data, int l, int r,int pivot) { J`E,Xw>2  
do{ `D44I;e^1;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q*L>MV  
SortUtil.swap(data,l,r); #%4XZ3j#j;  
} "!V-@F$@N  
while(l SortUtil.swap(data,l,r); }V:B,:  
return l; ''bh{ .x  
} F9ys.Bc  
Frn<~  
} 7Ei,L[{\i#  
^tMb"WO  
改进后的快速排序: 04K[U9W3  
_d|CO  
package org.rut.util.algorithm.support; B0h|Y.S8%1  
R[C+?qux  
import org.rut.util.algorithm.SortUtil; Kyf,<z F  
wMW."gM|  
/** ;u+k! wn  
* @author treeroot T*Dd% f  
* @since 2006-2-2 "QKCZ8_C  
* @version 1.0 og`rsl  
*/ &$$o=Yg,  
public class ImprovedQuickSort implements SortUtil.Sort { 2 c 2lK  
8a,uM :  
private static int MAX_STACK_SIZE=4096; ,Y:ET1:  
private static int THRESHOLD=10; fY4I(~Q  
/* (non-Javadoc) ~ u)} /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qe[ejj1o:  
*/ &RJ*DAmL  
public void sort(int[] data) { Fb!Ew`;QT  
int[] stack=new int[MAX_STACK_SIZE]; kB)u@`</mV  
R@X65o  
int top=-1; V< Ib#rd'  
int pivot; l&/V4V-  
int pivotIndex,l,r; GM~Ek] 9C%  
z#[PTqD-_  
stack[++top]=0; |rgp(;iO  
stack[++top]=data.length-1; 3s]aXz:  
<2n5|.:>  
while(top>0){ NihUCj"  
int j=stack[top--]; J dM0f!3  
int i=stack[top--]; rAn:hR{  
+]3kcm7B  
pivotIndex=(i+j)/2; *;&[q{hz  
pivot=data[pivotIndex]; 'mELW)S  
%eE0a4^".  
SortUtil.swap(data,pivotIndex,j); tD~ n PbbB  
( < e q[(  
file://partition ] 6X;&=H  
l=i-1; t/wo G9N  
r=j; qkM)zOZ^  
do{ 0!Vza?9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); aw923wEi  
SortUtil.swap(data,l,r); kl~)<,/@  
} UkTq0-N;2  
while(l SortUtil.swap(data,l,r); th1;Ym+Ze  
SortUtil.swap(data,l,j); z/I\hC9i  
H|IG"JB  
if((l-i)>THRESHOLD){ }Q?a6(4  
stack[++top]=i; K1+4W=|  
stack[++top]=l-1; Ob&m&2s,  
} KB"N',kG  
if((j-l)>THRESHOLD){ ELN1F0TneH  
stack[++top]=l+1; )n&6= Li  
stack[++top]=j; `0_,>Z  
} g5C$#<28  
AI^!?nJ%'  
} cBD#F$K2  
file://new InsertSort().sort(data); =h@t#-Z"  
insertSort(data); 7BS5Eq B=  
} `53S[8  
/** : 5X^t  
* @param data *x &  
*/ 'ln o#  
private void insertSort(int[] data) { (KLhF  
int temp; EzeU-!|W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :O'QL,  
} U2Tw_  
} .OpG2P  
} .6LlkM6[g  
N/!(`Z,  
} ]$,3vYBf  
:jf/$]p  
归并排序:  Zsn@O2  
.k-t5d  
package org.rut.util.algorithm.support; Xw#"?B(M]  
6lPuYEmT  
import org.rut.util.algorithm.SortUtil; noso* K7  
vdcPpj^d5  
/** |vw],r6  
* @author treeroot =.qX u+  
* @since 2006-2-2 -@tj0OHg  
* @version 1.0 8wrO64_NO  
*/ Bp_8PjQ  
public class MergeSort implements SortUtil.Sort{ rEMe=>^   
&P,uK+C4  
/* (non-Javadoc) ' Tk4P{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /^L <q  
*/ =)s~t|@v  
public void sort(int[] data) { jqj4(J@%yr  
int[] temp=new int[data.length]; Uc, J+j0F  
mergeSort(data,temp,0,data.length-1); rb*0YCi  
} wmA TV/  
:}R,a=N  
private void mergeSort(int[] data,int[] temp,int l,int r){ y=aWSb2y'  
int mid=(l+r)/2; e*y l_iW  
if(l==r) return ; ["#H/L]3  
mergeSort(data,temp,l,mid); UcKVL zKs  
mergeSort(data,temp,mid+1,r); MH|F<$42  
for(int i=l;i<=r;i++){ ifNyVE Hy  
temp=data; gBO,  
} ck b(+*+l  
int i1=l; &ty-aB=F  
int i2=mid+1; Lq62  
for(int cur=l;cur<=r;cur++){ qg/FI#r  
if(i1==mid+1) Dkx}}E:<  
data[cur]=temp[i2++]; >,QCKZH  
else if(i2>r) lGt:.p{NG  
data[cur]=temp[i1++]; N4z[=b>  
else if(temp[i1] data[cur]=temp[i1++]; Peo-t*-06  
else L]%!YP\<T  
data[cur]=temp[i2++]; ts% n tnvI  
} &Dt=[yqeG  
} m] yUcj{F  
C23p1%#1  
} Vh1y]#w  
C}|.z  
改进后的归并排序: $@vB<(sk  
052Cf dq  
package org.rut.util.algorithm.support; ~ MsHV%  
| TG6-e_  
import org.rut.util.algorithm.SortUtil; ?6\N&MTF  
mK/E1a)AG3  
/** ?lfyC/  
* @author treeroot 3d]~e  
* @since 2006-2-2 xC9{hXg!  
* @version 1.0 lU%oU&P/"S  
*/ X-X`Z`o  
public class ImprovedMergeSort implements SortUtil.Sort { =1k%T{>  
M7T*J>i  
private static final int THRESHOLD = 10; }]#z0'Aqsu  
en/h`h]h  
/* *~YdL7f)J  
* (non-Javadoc) /CH]'u^j  
* a0+q^*\d\R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?A3u2-  
*/ o>nw~_ H\  
public void sort(int[] data) { /E2P  
int[] temp=new int[data.length]; h-|IZ}F7  
mergeSort(data,temp,0,data.length-1); v%c/eAF  
} 7M _ mR Vh  
~-[!>1!%  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5Po:$(  
int i, j, k; "G~!J\  
int mid = (l + r) / 2; pKpB  
if (l == r) cWG%>.`5r  
return; mQ<4(qd)  
if ((mid - l) >= THRESHOLD) .p.( \5Fo  
mergeSort(data, temp, l, mid); )hl7)~S<  
else b !y  
insertSort(data, l, mid - l + 1); z5oJQPPi  
if ((r - mid) > THRESHOLD) \NMqlxp2  
mergeSort(data, temp, mid + 1, r); 0%< hj  
else t)Cf]]dV  
insertSort(data, mid + 1, r - mid); t#@z_Mn\  
sp:4b$zX  
for (i = l; i <= mid; i++) { k \qFWFR  
temp = data; `)5WA{z  
} F\&{>&  
for (j = 1; j <= r - mid; j++) { \+nV~Pi"A  
temp[r - j + 1] = data[j + mid]; &tvtL  
} a] 7g\rg)  
int a = temp[l]; NtM ? Jh  
int b = temp[r]; Zj-U^6^L  
for (i = l, j = r, k = l; k <= r; k++) { 1x=x,lcL  
if (a < b) { 7V8k =  
data[k] = temp[i++]; ZgG~xl\My  
a = temp; *l 4[`7|  
} else { -)^vO*b 0  
data[k] = temp[j--]; c_S~{a44Ud  
b = temp[j]; S5u$I  
} kS &>g  
} XVqkw@Ia4!  
} @8>bp#x/1  
7M4J{}9  
/** 9PA<g3z  
* @param data akNqSZwj  
* @param l 6pSTw\/6  
* @param i Pzq^x]  
*/ 9Q}g Vqn  
private void insertSort(int[] data, int start, int len) { I<CrEL<5}~  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); qPD(D{,f$  
} qbD 7\%  
} P`{$7ST'Hh  
} :H3/+/x  
} i0$*):b  
/hu>MZ(\  
堆排序: .MG83Si  
KUYwc@si\  
package org.rut.util.algorithm.support; V4NQcy? H  
5 ,-8oEUL  
import org.rut.util.algorithm.SortUtil; HUD0 @HQI  
J<+ f7L  
/** /{`"X_.o  
* @author treeroot &.?E[db"h  
* @since 2006-2-2 s5{=lP  
* @version 1.0 l*z% Jw  
*/ |u?VlRt  
public class HeapSort implements SortUtil.Sort{ 1s@QsZ3  
xl`AiO `K  
/* (non-Javadoc) zsQ|LwQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K$Vu[!l`  
*/ *|g[Mn  
public void sort(int[] data) { 2[Lv_<i|  
MaxHeap h=new MaxHeap(); *l{epum;  
h.init(data); Nj3iZD|  
for(int i=0;i h.remove(); u%e~a]  
System.arraycopy(h.queue,1,data,0,data.length); -W1p=od  
} YLQ0UeDN'  
ws5Ue4g|  
private static class MaxHeap{ z9[TjTH^}T  
WYTqQqQk  
void init(int[] data){ qE[YZ(/f0&  
this.queue=new int[data.length+1]; vs=q<Uw)  
for(int i=0;i queue[++size]=data; "lw|EpQk`  
fixUp(size); |&JeJ0k>~  
} }}$@Tij19[  
} hBpa"0F  
O# ZZ PJ"  
private int size=0; QHZ",1F  
o zn&>k  
private int[] queue; $Y6\m`  
$Q8 &TM}E  
public int get() { $ch`.$wx  
return queue[1]; hI!BX};+}  
} eNK +)<PK(  
.>F4s_6l  
public void remove() { \ m~?yq8H  
SortUtil.swap(queue,1,size--); uStAZ ~b\  
fixDown(1); Dho6N]86r  
} 3._ ep  
file://fixdown 6 Ln~b<I  
private void fixDown(int k) { T9Q3I  
int j; o= ($'(1  
while ((j = k << 1) <= size) { hA 5')te<  
if (j < size %26amp;%26amp; queue[j] j++;  A\Ib  
if (queue[k]>queue[j]) file://不用交换 H,L{N'[Xph  
break; +m%%Bz>  
SortUtil.swap(queue,j,k); Icrnu}pl_  
k = j; N7J?S~x  
} 8^ f:-5  
} {:uv}4Z  
private void fixUp(int k) { )e?&'wa>  
while (k > 1) { lUs$I{2_  
int j = k >> 1; j0mN4Ny  
if (queue[j]>queue[k]) Mz6(M,hkq  
break; 6EyPZ{  
SortUtil.swap(queue,j,k); ZK^cG'^2|  
k = j; 0,t%us/q  
} X>o9mW  
} PtbaC6"\  
hOAZvrfQ4  
} ALTOi?  
N~O3KG q  
} dn- [Gnde  
!B%em%Tv  
SortUtil: 2r!ltG3}  
Om0$6O  
package org.rut.util.algorithm; zW%Em81Wd  
%DKFF4k  
import org.rut.util.algorithm.support.BubbleSort; JyMk @Y  
import org.rut.util.algorithm.support.HeapSort; M/Yr0"%Q<.  
import org.rut.util.algorithm.support.ImprovedMergeSort; +`Z1L\gmA  
import org.rut.util.algorithm.support.ImprovedQuickSort; NAvR^"I~  
import org.rut.util.algorithm.support.InsertSort; *pJGp:{6V?  
import org.rut.util.algorithm.support.MergeSort; ^)gyKl:E'  
import org.rut.util.algorithm.support.QuickSort; 8mreHa  
import org.rut.util.algorithm.support.SelectionSort; o2ggHZe/=@  
import org.rut.util.algorithm.support.ShellSort; dyWp'vCQs\  
(CxA5u1|l  
/** tf~B,?  
* @author treeroot o?Hfxp0}  
* @since 2006-2-2 +;q\7*  
* @version 1.0 Res U5Ce~  
*/ ,D+ydr  
public class SortUtil { [#Y L_*p  
public final static int INSERT = 1; H>EM3cFU  
public final static int BUBBLE = 2; TBBnsj6e  
public final static int SELECTION = 3; SU~a()"  
public final static int SHELL = 4; SO0\d0?u  
public final static int QUICK = 5; $~G,T g  
public final static int IMPROVED_QUICK = 6; XX~vg>3_  
public final static int MERGE = 7; ':wf%_Iw  
public final static int IMPROVED_MERGE = 8; c 3QgX4vq  
public final static int HEAP = 9; VyxYv-$Y  
Y7}>yC/GY  
public static void sort(int[] data) { :G1ddb&0+  
sort(data, IMPROVED_QUICK); ?J\&yJ_B  
} }]vUr}Els  
private static String[] name={ :DN!1~ZtW  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" < xy@%  
}; q`<:CfCt  
P9cx&Hk9  
private static Sort[] impl=new Sort[]{ !uEEuD#  
new InsertSort(), BY6#dlDi  
new BubbleSort(), o{s2T)2  
new SelectionSort(), ,5n!a.T  
new ShellSort(), } GB~3 J  
new QuickSort(), jfxNV2[  
new ImprovedQuickSort(), wX"hUu  
new MergeSort(), i?6&4  
new ImprovedMergeSort(), G68KoM  
new HeapSort() !,Uo{@E)Y  
}; M5`v^>  
*DF3juf~  
public static String toString(int algorithm){ {[o NUzcd  
return name[algorithm-1]; ff#7}9_mh  
} \Z]+j@9  
X8|H5Y:  
public static void sort(int[] data, int algorithm) { pr0X7 #_E5  
impl[algorithm-1].sort(data); <,]:jgX  
} JtL> mH  
Pp8S\%z~h  
public static interface Sort { Js,!G  
public void sort(int[] data); p27Dc wov  
} )O1]|r7v  
Xsq@E#@S  
public static void swap(int[] data, int i, int j) { *'/,  
int temp = data; P>7Xbm,VP  
data = data[j]; x>#{C,Fi  
data[j] = temp; ,"%C.9a  
} ^{+ry<rS>  
} ;'"'|} xn  
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