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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。 _7O;ED+  
插入排序: NiCH$+c\  
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package org.rut.util.algorithm.support; 0x-58i0  
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import org.rut.util.algorithm.SortUtil; XYOPX>$T  
/** qJQ!e  
* @author treeroot BDeX5/`U#  
* @since 2006-2-2 #s!q(Rc  
* @version 1.0 !w!}`|q  
*/ 3y9K'  
public class InsertSort implements SortUtil.Sort{ 7q'_]$  
>z`^Q[  
/* (non-Javadoc) RO([R=.`/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z]1=nSv  
*/ eu]t.Co[X  
public void sort(int[] data) { Nf#8V|  
int temp; :< )"G&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v[aFSXGj)  
} M%3 \]&  
} hr+,-j  
} x}`]9XQ  
qm.30 2  
} +EmT+$>J  
0u?{"xH{+}  
冒泡排序: yC]xYn)  
GAZw4 dz  
package org.rut.util.algorithm.support; C^o9::ER  
;Jn"^zT  
import org.rut.util.algorithm.SortUtil; 7# /c7   
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/** S~8w-lG!  
* @author treeroot &?],uHB?d  
* @since 2006-2-2 $/*6tsR  
* @version 1.0 Tr^Egw]  
*/ T[z]~MJL  
public class BubbleSort implements SortUtil.Sort{ ;>eD`Wh  
Myl!tXawe8  
/* (non-Javadoc) 6hE. i x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PP{CK4  
*/ DA/l`Pn  
public void sort(int[] data) { ]8}+%P,Q  
int temp; M*r/TT  
for(int i=0;i for(int j=data.length-1;j>i;j--){ m#D+Yh/y{n  
if(data[j] SortUtil.swap(data,j,j-1); -`iXAyr)m  
} \k#|5W  
} an4^(SY  
} ,~R`@5+  
} BVKr 2v  
"5KJ /7q!  
} g1je':  
wH=L+bA>a  
选择排序: COE,pb17  
+s*OZ6i [  
package org.rut.util.algorithm.support; %TY;}V59b  
`m~x*)L#  
import org.rut.util.algorithm.SortUtil; _^)Wrf+  
*Cdw"n  
/** ,&DK*LT8U  
* @author treeroot .`iG} j)\  
* @since 2006-2-2 aUdbN&G  
* @version 1.0 \(nb >K  
*/ -/#VD&MJO=  
public class SelectionSort implements SortUtil.Sort { SWAggW)  
73-*| @6  
/* "l-L-sc,  
* (non-Javadoc) y^rcUPLT  
* YF+hN\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~*3obZ2>2  
*/ 3'd(=hJ45$  
public void sort(int[] data) { ){AtV&{$  
int temp; V~Zi #o  
for (int i = 0; i < data.length; i++) { ]x8_f6;D  
int lowIndex = i; h,Y!d]2w  
for (int j = data.length - 1; j > i; j--) { Quc,,#u  
if (data[j] < data[lowIndex]) { yGNZw7^(  
lowIndex = j; uCc.dluU  
} *wgHa6?+7  
} Q}KNtNCpx  
SortUtil.swap(data,i,lowIndex); 5E~?hWAv  
} Dq#/Uw#  
} |H:JwxH  
.6,+q2tyk,  
} (xp<@-  
Ywj=6 +;  
Shell排序: +E8Itb,  
4"OUmh9LHB  
package org.rut.util.algorithm.support; Yy 4EM  
DCJmk6p%0  
import org.rut.util.algorithm.SortUtil; ]s*Fs]1+H  
7eQE[C  
/** j\^0BTZ  
* @author treeroot hSxlj7Eo^T  
* @since 2006-2-2 R W= <EF&  
* @version 1.0 6GxQ<  
*/ y$n7'W6  
public class ShellSort implements SortUtil.Sort{ [m9Pt]j@  
]L'FYOfrpx  
/* (non-Javadoc) U({20  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H-?wEMi)*u  
*/ h'i8o>7  
public void sort(int[] data) { W\(u1>lj  
for(int i=data.length/2;i>2;i/=2){ 63s<U/N  
for(int j=0;j insertSort(data,j,i); 4?#0fK  
} u!k]Q#2ZR  
} <b-BJ2],k  
insertSort(data,0,1); ,BK6a'1J  
} *WSH-*0  
\htL\m^$9  
/** j3Ng] @N  
* @param data #q;hX;Va  
* @param j U=?hT&w\S  
* @param i UbBo#(TZ)  
*/ GVFR^pzO  
private void insertSort(int[] data, int start, int inc) { )$V&Nf  
int temp; vepZod}D  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .g CC$  
} x^UE4$oo  
} E$$pO.\  
} Mo+ mO&B  
NDG3mCl  
} tMN^"sjf*  
~, hPi  
快速排序: 0D;MW  
$rB20!  
package org.rut.util.algorithm.support; -1tdyCez  
OD,"8JF  
import org.rut.util.algorithm.SortUtil; |!r.p_Zt  
N=qe*Rlf  
/** vYh_<Rp5  
* @author treeroot NF& ++Vr6  
* @since 2006-2-2 dcFqK~  
* @version 1.0 V}1D1.@  
*/ =F!DwaZ  
public class QuickSort implements SortUtil.Sort{ u3!aKXnv<  
^y.e Fz  
/* (non-Javadoc) S.;>:Dd[K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9m2_zfO[ w  
*/ xy@1E;  
public void sort(int[] data) { n@LR?  
quickSort(data,0,data.length-1); K^V*JH\G  
} {HV$hU+_)Q  
private void quickSort(int[] data,int i,int j){ *>Z|!{bI  
int pivotIndex=(i+j)/2; :n3)vK   
file://swap 8S&Kf>D  
SortUtil.swap(data,pivotIndex,j); q!iMc  
L  lP  
int k=partition(data,i-1,j,data[j]); ],*^wQ   
SortUtil.swap(data,k,j); #A8d@]Ps  
if((k-i)>1) quickSort(data,i,k-1); Cdjh/+!f  
if((j-k)>1) quickSort(data,k+1,j); fvajNP  
V?g@pnN"  
} >Z#=<  
/** Wsn}Y-x  
* @param data RP]hW{:U  
* @param i 1vcI`8%S+u  
* @param j Kt WG2  
* @return ]w _,0q  
*/ lYlU8l5>  
private int partition(int[] data, int l, int r,int pivot) { )7mX]@  
do{ *}9i@DP1,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q&IO9/[dk  
SortUtil.swap(data,l,r); LEM{$Fxo&  
} K)2ZH@  
while(l SortUtil.swap(data,l,r); :@PM+[B|Q  
return l; {}?;|&_  
} 0A%>'<  
Gt&x<  
} o.tCw\M$g  
0B(<I?a/  
改进后的快速排序: tuA,t  
*_<P% J  
package org.rut.util.algorithm.support; !HA[:-JCz  
|>( @n{  
import org.rut.util.algorithm.SortUtil; Wt +, 6Cq  
aq[;[$w  
/** m178S3  
* @author treeroot S7-ka{S  
* @since 2006-2-2 e^g3J/aU  
* @version 1.0 Jtj_R l !  
*/ W_EM k  
public class ImprovedQuickSort implements SortUtil.Sort { nZ>bOP+,  
(7RxCo=X  
private static int MAX_STACK_SIZE=4096; Cc:4n1|]>  
private static int THRESHOLD=10; fP`g#t)4Tu  
/* (non-Javadoc) :$&%Pxm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $tyF(RybG  
*/ +w Oa  
public void sort(int[] data) { ,jWMJ0X/N=  
int[] stack=new int[MAX_STACK_SIZE]; i/rdPbq  
I xT[1$e  
int top=-1; ; Xy\7tx  
int pivot; uLYz!E+E  
int pivotIndex,l,r; e{edI{g  
z`-?5-a]I  
stack[++top]=0; @%L4^ms  
stack[++top]=data.length-1; a^qLyF& F  
\Q"o\:IoIT  
while(top>0){ [>"bL$tlo*  
int j=stack[top--]; 6JWCB9$4  
int i=stack[top--]; k%\_UYa  
**rA/*Oc  
pivotIndex=(i+j)/2;  `"v5bk  
pivot=data[pivotIndex]; .BGM1ph}~  
"|CzQ&e  
SortUtil.swap(data,pivotIndex,j); qkC+9Sk  
w]n20&  
file://partition P&3'N~k-  
l=i-1; 96aA2s1  
r=j; :>to?~Z1  
do{ dzZ74FE!t  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BM*9d%m^  
SortUtil.swap(data,l,r); #LlHsY530N  
} >:M3!6H_~{  
while(l SortUtil.swap(data,l,r); R}F0_.  
SortUtil.swap(data,l,j); !RLg[_'  
hkw;W[ZWa  
if((l-i)>THRESHOLD){ G l+[ |?N  
stack[++top]=i; kLVf}J~?  
stack[++top]=l-1; _Zya GDv  
} !3>(fj+QS  
if((j-l)>THRESHOLD){ <@FOqi{o{  
stack[++top]=l+1; <Vyv)#32o3  
stack[++top]=j; orn9;|8q  
} oxE'u<  
;crQ7}k  
} ;bVC7D~~4w  
file://new InsertSort().sort(data); ig:/60Z  
insertSort(data); mH> oF|  
} U0'>(FP~2  
/** 5EDN 9?a  
* @param data o{yEF1,c\  
*/ \1'3--n  
private void insertSort(int[] data) { (OT /o&cQ  
int temp; 3*$A;%q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @'U9*:}U  
} *)k}@tY  
}  ZSq7>}  
} `_sc_Y|C!  
pN/)$6=  
} M}NmA  
0!F"s>(H  
归并排序: !%x8!;za  
)W)m?%  
package org.rut.util.algorithm.support; UKp- *YukT  
Q[^IX  
import org.rut.util.algorithm.SortUtil; zCKZv|j6  
N+x0"~T}I  
/** T;jp2 #  
* @author treeroot kM5N#|!  
* @since 2006-2-2 \o9-[V#Gm  
* @version 1.0 hK"hMyH^  
*/ Ei2Y)_   
public class MergeSort implements SortUtil.Sort{ 78>)<$+d  
vJDK]p<}  
/* (non-Javadoc) obRR))  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U>6MT@\  
*/ !)RND 6.  
public void sort(int[] data) { O{a<f7 W  
int[] temp=new int[data.length]; ep .AW'+  
mergeSort(data,temp,0,data.length-1); R*IO%9O  
} Zws[}G"7h  
8RWfv}:X  
private void mergeSort(int[] data,int[] temp,int l,int r){ -4`Wkkhu  
int mid=(l+r)/2; }$3eRu +  
if(l==r) return ; q}e"E cr  
mergeSort(data,temp,l,mid); 1VK?Svnd  
mergeSort(data,temp,mid+1,r); <qN0Q7  
for(int i=l;i<=r;i++){ T!5m'Q.  
temp=data; 8 $0D-z  
} sfi.zu G  
int i1=l; <m9hM?^q  
int i2=mid+1; xy$73K6  
for(int cur=l;cur<=r;cur++){ b'Qia'a%  
if(i1==mid+1) "P HkbU  
data[cur]=temp[i2++]; {8UYu2t  
else if(i2>r) *"` dO9Yf_  
data[cur]=temp[i1++]; *T j(IN  
else if(temp[i1] data[cur]=temp[i1++]; OiX:h#  
else ^pZ1uN!b  
data[cur]=temp[i2++]; >k,|N4(  
} @#K19\dQ  
} l CHaRR7  
90> (`pI=  
} `rsPIOu  
Mg;%];2Nt  
改进后的归并排序: $Z6g/bD`E  
8A}w}h  
package org.rut.util.algorithm.support; %eWzr  
ia 1Sf3  
import org.rut.util.algorithm.SortUtil; lY/{X]T.(  
0xrr9X<  
/** QQUeY2}  
* @author treeroot \O5`R-  
* @since 2006-2-2 |m7U^  
* @version 1.0 %0C<_drW  
*/ u-PAi5&n  
public class ImprovedMergeSort implements SortUtil.Sort { sm5\> L3V  
Y-\hV6v6  
private static final int THRESHOLD = 10; &Oc^LV$6  
n 1MZHa,  
/* =r"8J5[f  
* (non-Javadoc) _O)xE9t#ru  
* /!;oO_U:#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1>P[3Y@}  
*/ qd#?8  
public void sort(int[] data) { qp_lMz  
int[] temp=new int[data.length]; .gTla  
mergeSort(data,temp,0,data.length-1); Hs/ aU_  
} Pe6}y  
H-A?F ^#  
private void mergeSort(int[] data, int[] temp, int l, int r) { |D+"+w/  
int i, j, k; d4KT wn5g  
int mid = (l + r) / 2; IWcgh`8  
if (l == r) OV3l)73?t  
return; v+uq  
if ((mid - l) >= THRESHOLD) HE58A.Q&  
mergeSort(data, temp, l, mid); M#X8Rs1`  
else a0I+|fR  
insertSort(data, l, mid - l + 1); zWKnkIit,  
if ((r - mid) > THRESHOLD) 1BT]_ cP  
mergeSort(data, temp, mid + 1, r); *I6z;.#  
else 4-;"w;  
insertSort(data, mid + 1, r - mid); {Q],rv|;  
FY_.Vp  
for (i = l; i <= mid; i++) { d%_=r." Y  
temp = data; |f), dC  
} |U{9Yy6p  
for (j = 1; j <= r - mid; j++) { K ;\~otR^  
temp[r - j + 1] = data[j + mid]; 2 Ya)I k{  
} MuXp*s3[  
int a = temp[l]; O O?e8OU  
int b = temp[r]; FsQeyh>  
for (i = l, j = r, k = l; k <= r; k++) { @_s`@ ,=  
if (a < b) { Ie{98  
data[k] = temp[i++]; hhd%j6  
a = temp; 'i5 VU4?K  
} else { t80s(e  
data[k] = temp[j--]; _5TSI'@.4  
b = temp[j]; V/|).YG2  
} su;u_rc,  
} R<. <wQ4I  
} ~hK7(K  
F. 5'5%  
/** Z(DCR/U=(>  
* @param data d: D`rpcC  
* @param l o V"d%ks  
* @param i S3#NGBZ/  
*/ B1<:nl  
private void insertSort(int[] data, int start, int len) { D.d(D:  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Z9 X<W`  
} MzjV>.  
} D![42H+-Qd  
} E;!pK9wL|  
} $A~UA  
zVN/|[KP4  
堆排序: GL;@heP  
y/=:F=H@w  
package org.rut.util.algorithm.support; 6v8HR}iK  
58xaVOhb  
import org.rut.util.algorithm.SortUtil; Ku;|Dz/=o  
\f| Hk*@  
/** hOYm =r  
* @author treeroot 9R_2>BDn  
* @since 2006-2-2 EmrUzaGD  
* @version 1.0 od~^''/b  
*/ (Z:(f~;  
public class HeapSort implements SortUtil.Sort{ EUBJnf:q  
@1+C*  
/* (non-Javadoc) S&/</%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |OW/-&)  
*/ t^ _0w[  
public void sort(int[] data) { YywiY).]@  
MaxHeap h=new MaxHeap(); @ig'CF%(  
h.init(data); [5[}2 B_t  
for(int i=0;i h.remove(); be&5vl  
System.arraycopy(h.queue,1,data,0,data.length); ,RmXZnWY  
} h>ZNPP8N  
Oi#4|*b{W  
private static class MaxHeap{ yx5F]Z<M2  
nW)-bAV<  
void init(int[] data){ =^liong0  
this.queue=new int[data.length+1]; lMkDLobos  
for(int i=0;i queue[++size]=data; 0$=Uhi  
fixUp(size); ?O(@BT  
} BR&T,x/d  
} GMk\ l  
k^<s|8Y  
private int size=0; TUE*mDRmP  
}f rij1/G  
private int[] queue; Mc8|4/<Z  
u&4CXv=  
public int get() { 5ggmS<=  
return queue[1]; fZQL!j4  
} q/T(s  
` =ocr8c  
public void remove() { b\6 )whh  
SortUtil.swap(queue,1,size--); .<xzf4C  
fixDown(1); &[u>^VO8  
} :LE0_ .  
file://fixdown lKVy{X 3]*  
private void fixDown(int k) { j@chSk"K  
int j; jbQ N<`!  
while ((j = k << 1) <= size) { XKp$v']u  
if (j < size %26amp;%26amp; queue[j] j++; #+VH]7]  
if (queue[k]>queue[j]) file://不用交换 yf|,/{S  
break; !Cqm=q{K  
SortUtil.swap(queue,j,k); Wp2W:JX:  
k = j; @|I:A  
} -dRnozs6W  
} "n<rP 3y  
private void fixUp(int k) { 7JC^+ rk  
while (k > 1) { c}XuzgSY  
int j = k >> 1; \R"}=7  
if (queue[j]>queue[k]) 'K|Jg.2  
break; k8>(-W"A  
SortUtil.swap(queue,j,k); }s*H| z  
k = j; VSm[80iR0  
} 01N]|F:  
} a#i85su  
U2Uf69R  
} 7CKpt.Sz6  
cZ8lRVaWW  
} |\HYq`!g%7  
~Te9Lq|  
SortUtil: WUC-* (  
'eM90I%(  
package org.rut.util.algorithm; t1LIZ5JY  
=1!,A  
import org.rut.util.algorithm.support.BubbleSort; \VL_  
import org.rut.util.algorithm.support.HeapSort; xXa* d  
import org.rut.util.algorithm.support.ImprovedMergeSort; S7|6dwQ&  
import org.rut.util.algorithm.support.ImprovedQuickSort; xg:r5Z/|)  
import org.rut.util.algorithm.support.InsertSort; 25bbuhss  
import org.rut.util.algorithm.support.MergeSort; 2 X];zY  
import org.rut.util.algorithm.support.QuickSort;  {J aulg  
import org.rut.util.algorithm.support.SelectionSort; #=}dv8  
import org.rut.util.algorithm.support.ShellSort; o0yyP,?yh  
v~l_6V}  
/** * ':LBc=%  
* @author treeroot *.'9eC0s  
* @since 2006-2-2 jCJbmEfo9@  
* @version 1.0 <5 Ye')+  
*/ }JP0q  
public class SortUtil { S\\3?[!p  
public final static int INSERT = 1; W^o* ^v  
public final static int BUBBLE = 2; trl:\m  
public final static int SELECTION = 3; Z`FEB0$  
public final static int SHELL = 4; Sio> QL Y  
public final static int QUICK = 5; $`KddW0_  
public final static int IMPROVED_QUICK = 6; $A4rdhvd  
public final static int MERGE = 7; jb~W(8cj  
public final static int IMPROVED_MERGE = 8; tEU}?k+:j)  
public final static int HEAP = 9; E1 | >O  
5g x9W\a ?  
public static void sort(int[] data) { 98c##NV(7|  
sort(data, IMPROVED_QUICK); knX*fp  
} 7@[HRr  
private static String[] name={ y_s^dQe  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <N4)X"s  
}; *\-R&8  
TT85G&#  
private static Sort[] impl=new Sort[]{ %VV\biO]  
new InsertSort(), rNi]|)-ET  
new BubbleSort(), $ 8"we  
new SelectionSort(), a\K__NCrX  
new ShellSort(), jY~W*  
new QuickSort(), |JUb 1|gi  
new ImprovedQuickSort(), z;c~(o@4  
new MergeSort(), 7o+JQ&fF;  
new ImprovedMergeSort(), ;~A-32;Y4  
new HeapSort() <yoCW?#  
}; FW~{io]n  
Q140b;Z  
public static String toString(int algorithm){ Sckt gp8  
return name[algorithm-1]; DH@]d0N  
} O^Y}fo'  
=up!lg^M  
public static void sort(int[] data, int algorithm) { \d"uR@$3mG  
impl[algorithm-1].sort(data); "mbjS(-eg  
} }NH\Q$IU  
fXL&?~fS  
public static interface Sort { QU#u5sX A  
public void sort(int[] data); iY|zv|;]=  
} P#8+GN+bF  
aEO``W  
public static void swap(int[] data, int i, int j) { QNN*/n  
int temp = data; {6y@;Fd  
data = data[j]; @;6I94Bp  
data[j] = temp; ?Aq \Gr  
} ].TAZ-4s  
} Mu1H*;_8  
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