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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。 n=_jmR1  
插入排序: `PH]_]:%  
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package org.rut.util.algorithm.support; u*w'.5l  
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import org.rut.util.algorithm.SortUtil; Tup2;\y  
/** JnodDH ?  
* @author treeroot ^E]Xq]vd"  
* @since 2006-2-2 GI. =\s  
* @version 1.0 jXH?os%  
*/ 0D==0n  
public class InsertSort implements SortUtil.Sort{ sQl`0|VH  
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/* (non-Javadoc) }} s.0Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (?W[#.=7  
*/ 7iijATc  
public void sort(int[] data) { )}3!iDA  
int temp; 8n2MZ9p]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z23*`yR  
} %D_pTD\  
} g#}a?kTM@  
} 5`t MHgQO  
I7C*P~32{n  
} W|,Y*l  
d&G#3}kOb%  
冒泡排序: Ec4+wRWk85  
5,~Ju>y*  
package org.rut.util.algorithm.support; rY:A LA  
vQ_D%f4;  
import org.rut.util.algorithm.SortUtil; \ )'`F; P  
azKiXr#_(  
/** ]>_Ie?L)<  
* @author treeroot 7#pu(:T$  
* @since 2006-2-2 "54t7  
* @version 1.0 0Z,a3)jcc  
*/ :*<UCn""  
public class BubbleSort implements SortUtil.Sort{ wR@"]WkR=  
Kh' 7N!  
/* (non-Javadoc) @w[2 BaDt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j~;kh_  
*/ *p  !F+"  
public void sort(int[] data) { b,#lw_U"  
int temp; ]38{du  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ==XO:P  
if(data[j] SortUtil.swap(data,j,j-1); ,e93I6  
} Tj3xK%K_r3  
} @b@#  o  
} {1VMwANj  
} [gE_\=FSKu  
XI/LVP,.  
} ^f?>;,<&  
=_)yV0  
选择排序: lHI ;fR  
1RM@~I$0  
package org.rut.util.algorithm.support; zMI_8lNz  
?P>3~3 B  
import org.rut.util.algorithm.SortUtil; 7,BULs\g  
fFiFS\''V  
/** XhEJF !  
* @author treeroot zho$g9*  
* @since 2006-2-2 MUjfqxTT  
* @version 1.0 J&w'0  
*/ *kM^l!<g  
public class SelectionSort implements SortUtil.Sort { u+_6V  
T-)lnrs^  
/* XtP5IN\S  
* (non-Javadoc) M4rK  
* ?#]wx H,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P+2@,?9#  
*/ vOV$Hle  
public void sort(int[] data) { 'OjsV$_  
int temp; M9ACaf@  
for (int i = 0; i < data.length; i++) { Gw@]w;ed  
int lowIndex = i; 1/J3 9Y~+  
for (int j = data.length - 1; j > i; j--) { K Ml>~r  
if (data[j] < data[lowIndex]) { )z=L^ot  
lowIndex = j; -?}Z0e(w  
} :SJxG&Pm=~  
} XFmTr@\M  
SortUtil.swap(data,i,lowIndex); 0CR~ vQf#r  
} ,SB5"  
} C(!A% >  
efUa[XO  
} =6H  
NR9=V  
Shell排序: XN %tcaY  
<4%cKW0  
package org.rut.util.algorithm.support; <!G%P4)  
+DwE~l  
import org.rut.util.algorithm.SortUtil; H9+[T3b  
{[:]}m(c  
/** ,(y6XUV~  
* @author treeroot Bp9_\4  
* @since 2006-2-2 >HL$=J_K?  
* @version 1.0 ^=@`U_(,G  
*/ ({!S!k  
public class ShellSort implements SortUtil.Sort{ -POsbb>  
`x:8m?q05  
/* (non-Javadoc) 9?38/2kX4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MfG8=H2#|  
*/ ]9hXiY  
public void sort(int[] data) { C.N#y`g  
for(int i=data.length/2;i>2;i/=2){ ^SvGSx i  
for(int j=0;j insertSort(data,j,i); reI4!,x  
} M"!{Dx~  
} '4e, e|r  
insertSort(data,0,1); 6R'z3[K9  
} ?)V|L~/  
1Rd2Xb  
/** E x )fXQ+  
* @param data YS0^ !7u  
* @param j mV++7DY  
* @param i VxW>Xx G0  
*/ \ IX|{]*D  
private void insertSort(int[] data, int start, int inc) { 34c+70x7  
int temp; 2e^6Od!Y?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]Il}ymkIZ  
} :zp9L/eh  
} (MzThGJK_  
} moCr4*jDX,  
oZ\zi> Y,  
} ["0DXm%t  
~@d4p|K  
快速排序: )~be<G( a  
0WQd#l  
package org.rut.util.algorithm.support; 7Sl"q=>  
Y. KJP ?  
import org.rut.util.algorithm.SortUtil; '4)4*3z,  
yF@72tK  
/** Y,M 2 D  
* @author treeroot -GODM128 ^  
* @since 2006-2-2 /RemLJP F  
* @version 1.0 WXFC e@  
*/ R/P9=yvg0  
public class QuickSort implements SortUtil.Sort{ ~tZy-1  
*0/%R{+S  
/* (non-Javadoc) M,sZ8eeq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (sp{.bU  
*/ (nAg ~i  
public void sort(int[] data) { ) ^ 7- qy  
quickSort(data,0,data.length-1); lS |:4U.  
} 0) Q*u  
private void quickSort(int[] data,int i,int j){ R47tg&k6[  
int pivotIndex=(i+j)/2; H,Yrk(O-  
file://swap u85?f  
SortUtil.swap(data,pivotIndex,j); %`0*KMO3  
~F13}is  
int k=partition(data,i-1,j,data[j]); ZN}U^9m=  
SortUtil.swap(data,k,j); 8I<LZ{a10  
if((k-i)>1) quickSort(data,i,k-1); %ZT I ?a  
if((j-k)>1) quickSort(data,k+1,j); JlE b  
u& <NBxY  
} 5"z~BE7  
/** C^ZD Uj`  
* @param data "O<TNSbrC  
* @param i Voo_ ?  
* @param j >x8~?)7z  
* @return 1?{w~cF}  
*/ _Kg"l5?B  
private int partition(int[] data, int l, int r,int pivot) { %B(E;t63W  
do{ 'Ooq.jaK;/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T1M>N  
SortUtil.swap(data,l,r); ~' q&rvk`  
} +t}<e(  
while(l SortUtil.swap(data,l,r); 3yu,qb'"&  
return l; ZG)6{WS  
} 8_{XrTw(  
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} ni-4 ~k  
M7c53fz  
改进后的快速排序: =' &TqiIv"  
#R# |hw  
package org.rut.util.algorithm.support; r-ljT<f%J[  
@pV&{Vp  
import org.rut.util.algorithm.SortUtil; 4_w{~  
28O3N;a  
/** D`NQEt"(  
* @author treeroot  G`NGt_C  
* @since 2006-2-2 :JCe,1!3@  
* @version 1.0 A2"$B\j1  
*/ Jqqt@5Ni  
public class ImprovedQuickSort implements SortUtil.Sort { Kbcr-89Gv~  
-XWlmw*i(g  
private static int MAX_STACK_SIZE=4096; 9On(b|mT  
private static int THRESHOLD=10; M~-jPY,+  
/* (non-Javadoc) Z'_EX7r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T9]:, z  
*/ 0ae}!LO  
public void sort(int[] data) { -}P/<cu:  
int[] stack=new int[MAX_STACK_SIZE]; m ?jF:] ^  
#RP7?yGM,  
int top=-1; 92g&,Wb  
int pivot; g BV66L  
int pivotIndex,l,r; T4x[ \v5d  
q[TW  
stack[++top]=0; NXdT"O=P  
stack[++top]=data.length-1; d5 U+]g  
|=#uzp7*  
while(top>0){ *+>QKR7  
int j=stack[top--]; RhI>Ak;-  
int i=stack[top--]; \-RVPa8k  
' O d_:]  
pivotIndex=(i+j)/2; }+BbwBm&  
pivot=data[pivotIndex]; HsAKz]Mq  
9+co `t.  
SortUtil.swap(data,pivotIndex,j); Q#sLIZ8=  
,Cj` 0v#  
file://partition q|kkdK|N/Y  
l=i-1; H1a<&7  
r=j; NZt 8L?  
do{ ]VHO'z\m  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); gBJM|"_A?  
SortUtil.swap(data,l,r); Lb%:u5X\D@  
} zn/b\X/  
while(l SortUtil.swap(data,l,r); gshgl3   
SortUtil.swap(data,l,j); Gcd'- 1  
#mH4\s  
if((l-i)>THRESHOLD){ lwp(Pq  
stack[++top]=i; xQ@gh ( (  
stack[++top]=l-1; 1|3{.Ed  
} .dl4f"k  
if((j-l)>THRESHOLD){ ^fT?(y_= e  
stack[++top]=l+1; cA25FD  
stack[++top]=j; _U`1BmTC2  
} 46M?Gfd,X  
KPB^>,T2{  
} nZ~J &QK-  
file://new InsertSort().sort(data); |-.r9;-b  
insertSort(data); 4: S-  
} g;t>jgX  
/** v="2p8@F  
* @param data Nk&$b  
*/ 0Nq6>^ %  
private void insertSort(int[] data) { KImazS^  
int temp; 7W `gN[*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t+m ug  
} ahqsbNu1  
} m{ C  
} Q:sw*7"F  
rT{+ h}vO  
} 9ld'SB:#  
OAd}#R\U  
归并排序: I.RmBUq):s  
\1cJ?/$_Of  
package org.rut.util.algorithm.support; ieG%D HN  
V j"B/@  
import org.rut.util.algorithm.SortUtil; D}6~2j  
n0< I  
/** w8>  
* @author treeroot gQ~X;'  
* @since 2006-2-2 6[l{@*r"  
* @version 1.0 "L~qsFL  
*/ t +@UC+aW  
public class MergeSort implements SortUtil.Sort{ F)^:WWVc#  
FT+[[9i  
/* (non-Javadoc) ew{(@p+$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E4dN,^_ F!  
*/ 6 s1lf!  
public void sort(int[] data) { + 4*jO5EZ  
int[] temp=new int[data.length]; t/L:Y=7w  
mergeSort(data,temp,0,data.length-1); qZ|>{^a*  
} GI$7uR}  
d1=fA%pJ  
private void mergeSort(int[] data,int[] temp,int l,int r){ 1# -=|:U  
int mid=(l+r)/2; :q,tmk h  
if(l==r) return ; Uel^rfE`  
mergeSort(data,temp,l,mid); U jrML  
mergeSort(data,temp,mid+1,r); 3T7,Y(<V  
for(int i=l;i<=r;i++){ Me XGE  
temp=data; ofIw7D*h  
} I# U"DwM  
int i1=l; .PJCBT e  
int i2=mid+1; 9et%Hn.K'  
for(int cur=l;cur<=r;cur++){ -"Hy%wE  
if(i1==mid+1) iR(jCD?) Y  
data[cur]=temp[i2++]; F2 #s^4Ii  
else if(i2>r) c mI&R(  
data[cur]=temp[i1++]; B8sc;Z.  
else if(temp[i1] data[cur]=temp[i1++];  8%W(",nd  
else {,`)  
data[cur]=temp[i2++]; MmPLJ  
} @+P7BE}  
} F.[E;gOTo  
>GV = %  
} mxQPOu  
>wOqV!0<  
改进后的归并排序: JNZ  O7s  
vv% o+r-t  
package org.rut.util.algorithm.support; E+$%88  
PBo;lg`  
import org.rut.util.algorithm.SortUtil; ]> dCt<  
ub,GF?9  
/** XV|u!'Ey  
* @author treeroot U 3UDA  
* @since 2006-2-2 dnW#"  
* @version 1.0 XzF-g*e  
*/ mv;;0xH  
public class ImprovedMergeSort implements SortUtil.Sort { ;:5Ahfo \  
5U!yc7eBI/  
private static final int THRESHOLD = 10; ^;@Q3~DpP%  
VwKo)zH  
/* .lt|$["  
* (non-Javadoc) /+g9C(['  
* ft" t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8'}D/4MUr  
*/ (m3 <)  
public void sort(int[] data) { Je1'0h9d  
int[] temp=new int[data.length]; ZS\~GQbG  
mergeSort(data,temp,0,data.length-1); n B .?=eUa  
} n |e=7?H8  
zOfMKrRG  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,K>q{H^  
int i, j, k; gf\F%VmSN  
int mid = (l + r) / 2; c?H@HoF  
if (l == r) 9ER!K  
return; V9%!B3Sb  
if ((mid - l) >= THRESHOLD) A<$w }Fy;  
mergeSort(data, temp, l, mid); {I:nza  
else QRL+-)DMc  
insertSort(data, l, mid - l + 1); ^0fe:ac;  
if ((r - mid) > THRESHOLD) P1>?crw  
mergeSort(data, temp, mid + 1, r); [42EqVR  
else ![l`@NH[U  
insertSort(data, mid + 1, r - mid); )U5Ba^"fI  
q0y#Y  
for (i = l; i <= mid; i++) { d09qZj>  
temp = data; 4/J"}S  
} (aTpBXGr=  
for (j = 1; j <= r - mid; j++) { |K,[[D<R  
temp[r - j + 1] = data[j + mid]; f(Uo?_as  
} l =Is-N`  
int a = temp[l]; Fd(o8z8Q  
int b = temp[r]; D]StDOmM  
for (i = l, j = r, k = l; k <= r; k++) { Sz'H{?"  
if (a < b) { !bGMVw6_  
data[k] = temp[i++]; |J:kL3g  
a = temp; .wvgH i  
} else { mi& mQQ  
data[k] = temp[j--]; _p^&]eQ+k#  
b = temp[j]; g* DBW,  
} %SKJ#b  
} fB"It~ p  
} L[a A4`  
<[Y@<  
/** qw35LyL  
* @param data mVVL[z2+  
* @param l %Xjg/5G-  
* @param i ^W*3S[-`g  
*/ Zg;%$ kSQ  
private void insertSort(int[] data, int start, int len) { x$+g/7*  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^w6~?'}  
} -hpC8YS  
} A=bBI>GEYP  
} ,%4~ulKMn  
} RQQ\y`h`  
g7@.Fa.u'!  
堆排序: sRaTRL2  
7rSads  
package org.rut.util.algorithm.support; T'${*NVn  
>4iVVs  
import org.rut.util.algorithm.SortUtil; .\}nDT  
Q8?:L<A  
/** ]!'9Y}9a  
* @author treeroot \@F~4,VT  
* @since 2006-2-2 n1r'Y;G  
* @version 1.0 1|/-Ff"1@  
*/ KbM1b  
public class HeapSort implements SortUtil.Sort{ 56 [+;*  
RElIWqgY  
/* (non-Javadoc) JGG(mrvR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /?_5!3KJ  
*/ 07#e{   
public void sort(int[] data) { z( ^ r  
MaxHeap h=new MaxHeap(); rJw Ws  
h.init(data); E9~}%&  
for(int i=0;i h.remove(); s~n@|m9k  
System.arraycopy(h.queue,1,data,0,data.length); #Zj3SfU~`  
} 0$:jZ/._  
\?~cJMN  
private static class MaxHeap{ @D+2dT0[M  
}zy h!  
void init(int[] data){ Y wu > k  
this.queue=new int[data.length+1]; $ )orXe|  
for(int i=0;i queue[++size]=data; \SyG#.$  
fixUp(size); HMl M!Xk?  
} ;nbbKQ]u  
} 4"d'iY  
R@A"U[*  
private int size=0; DTo P|P  
SK t&BnW  
private int[] queue; J|.n bSE  
_ 0h)O  
public int get() { 9 `T2  
return queue[1]; {N'<_%cu  
} v]c+|nRs  
-n~%v0D8c  
public void remove() { ':#DROe!  
SortUtil.swap(queue,1,size--); -W.bOr  
fixDown(1); ~U+W4%f8  
} "/0Vvy_|  
file://fixdown xV>sc;PEb  
private void fixDown(int k) { ,lb >  
int j; mIah[~G  
while ((j = k << 1) <= size) { f?W"^6Df  
if (j < size %26amp;%26amp; queue[j] j++; SmCtwcB1  
if (queue[k]>queue[j]) file://不用交换 W,bu=2K6  
break; ,u^%[ejH  
SortUtil.swap(queue,j,k); H{ I,m-  
k = j; g[ O6WZ!F_  
} o[B"J96b  
} b:(t22m#?  
private void fixUp(int k) { BNq6dz$J  
while (k > 1) { bsdT>|gW  
int j = k >> 1; T07 AH  
if (queue[j]>queue[k]) 8T}Dn\f  
break; -muP.h/  
SortUtil.swap(queue,j,k); k\Z@B!VAq  
k = j; ~'VVCtA  
} {ug*  
} vpz l{  
wj 15Og?  
} j5MUP&/g3  
}S 6h1X  
} rj/1AK  
XVzsqi*Z  
SortUtil: FE3uNfQs|  
4a zqH;i  
package org.rut.util.algorithm; :Ny^-4-N  
Y lhKP;  
import org.rut.util.algorithm.support.BubbleSort; #Q$e%VJ(c1  
import org.rut.util.algorithm.support.HeapSort; W<T Ui51Y  
import org.rut.util.algorithm.support.ImprovedMergeSort; (N?nOOQ  
import org.rut.util.algorithm.support.ImprovedQuickSort; P#-p* 4  
import org.rut.util.algorithm.support.InsertSort; 349BQ5ND  
import org.rut.util.algorithm.support.MergeSort; to(lE2`.da  
import org.rut.util.algorithm.support.QuickSort; x\aCZ  
import org.rut.util.algorithm.support.SelectionSort; [ i8Ju  
import org.rut.util.algorithm.support.ShellSort; qflOi8  
8f>v[SQ"  
/** 7[:?VXQ  
* @author treeroot lY[\eQ 1:  
* @since 2006-2-2 yi*EE%  
* @version 1.0 ?G 'sb}.  
*/ fU|4^p)  
public class SortUtil { Zx^R-9  
public final static int INSERT = 1; (o4':/es  
public final static int BUBBLE = 2; #@m6ag.  
public final static int SELECTION = 3; ;jh.\a_\  
public final static int SHELL = 4; uTNy{RBD+  
public final static int QUICK = 5; : `,#z?Rk  
public final static int IMPROVED_QUICK = 6; J~)JsAXAI  
public final static int MERGE = 7; ? kCo/sW  
public final static int IMPROVED_MERGE = 8; !*PX -  
public final static int HEAP = 9; T@mYHKu  
g=jB'h?  
public static void sort(int[] data) { wU-Cb<^  
sort(data, IMPROVED_QUICK); $ZlzS`XF7  
} oF_ '<\ly=  
private static String[] name={ \ESNfL5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >=/DCQ$  
}; &Z%'xAOGR  
o.wXaS8  
private static Sort[] impl=new Sort[]{ >N"=10  
new InsertSort(), s){R/2O3F  
new BubbleSort(), ~h$ H@&5  
new SelectionSort(), nPhREn!  
new ShellSort(), `KUL 4) g~  
new QuickSort(), LBIEG_/m  
new ImprovedQuickSort(), .J?RaH{i  
new MergeSort(), s8SCEpz  
new ImprovedMergeSort(), et<@3wyd]  
new HeapSort() WnhH]WY  
}; Ct]? /  
7-mo\jw<  
public static String toString(int algorithm){ 4%7Oaf>9  
return name[algorithm-1]; d>wG6Z,|  
} 'y7<!uo?  
dTqL[?wH?  
public static void sort(int[] data, int algorithm) { x$KQ*P~q  
impl[algorithm-1].sort(data); z8 K#G%,:  
} 3iw. yR  
E//*bmww  
public static interface Sort { lHO.pN`2  
public void sort(int[] data); EUS^Gtc  
} GK&R.R]  
!J(6E:,b#  
public static void swap(int[] data, int i, int j) { [Vj|fy4  
int temp = data; !X 0 (4^  
data = data[j]; aZ}z/.b]  
data[j] = temp; 'grb@+w(  
} Vu,:rPqI  
} Ox6^=D "  
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