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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。 xpnnWHdaq  
插入排序: p$=3&qR 6  
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package org.rut.util.algorithm.support; +Q '|->#  
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import org.rut.util.algorithm.SortUtil; i a|F  
/** urN&."c  
* @author treeroot 2<O hO ^  
* @since 2006-2-2 ?+!KucTF  
* @version 1.0 W)"q9(T?%  
*/ &sllM  
public class InsertSort implements SortUtil.Sort{ _]4cY%s  
WV6vM()#!C  
/* (non-Javadoc) ewLr+8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V?gQ`( ,  
*/ [ wROIvV  
public void sort(int[] data) { $M8'm1R9  
int temp; F0yh7MItV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6lhVwgy3A  
} [DE8s[i-  
} +:t1PV;l  
} ;L`'xFo>>  
#8RQ7|7b|  
} C +IXP  
'D-imLV<<  
冒泡排序: Nhf!;>  
UO&S6M]v7  
package org.rut.util.algorithm.support; uaGg8  
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import org.rut.util.algorithm.SortUtil; BBx"{~  
s2$R2,  
/** Gq{v)iN  
* @author treeroot 0s8S`hCn>  
* @since 2006-2-2 SUx0!_f*R  
* @version 1.0 bZi>   
*/ tQ/w\6{  
public class BubbleSort implements SortUtil.Sort{ mI.*b(Irp  
@-m&X2J+c  
/* (non-Javadoc) I?PKc'b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GM%|mFqeu  
*/ ]juXm1)>W1  
public void sort(int[] data) { aB Yhk|Ei  
int temp; lH6t  d  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6 Ym[^U  
if(data[j] SortUtil.swap(data,j,j-1); JvUKfsnu{  
} &x;nP6mV  
} [W2p}4(  
} 1{~9:U Q  
} o+nU{  
>WpPYUbH  
} &3JbAJ|;X  
A6sBObw;  
选择排序: tSm|U<  
?;*mSQA`J  
package org.rut.util.algorithm.support; p$ko=fo-*_  
S:5Nh^K  
import org.rut.util.algorithm.SortUtil; $+mmqc8  
~E!"YkIr  
/** -ZuzJAA  
* @author treeroot e L(T  
* @since 2006-2-2 X23TS`  
* @version 1.0 hcBfau;r  
*/ 0VbZBLe  
public class SelectionSort implements SortUtil.Sort { qvt~wJf<  
#mj+|/0  
/* H"-p^liw  
* (non-Javadoc) 9+/<[w7  
* x,>=X` T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ="u(o(j"  
*/ uwIZzz  
public void sort(int[] data) { Sd)D-S  
int temp; jeW0;Cz J~  
for (int i = 0; i < data.length; i++) { p#?1l/f"  
int lowIndex = i; Zj}, VB*T  
for (int j = data.length - 1; j > i; j--) { X{ Nif G  
if (data[j] < data[lowIndex]) { "NJ!A  
lowIndex = j; L*5&hPU  
} Og,,s{\  
} U,]z)1#X|  
SortUtil.swap(data,i,lowIndex); 9 ROKueP  
} ~MXPiZG?  
} H7{ 6t(0j  
qH-dT,`"{  
} bT>^% H3  
CSD8?k]2  
Shell排序: C[pAa8  
/fD)/x  
package org.rut.util.algorithm.support; r)b`3=  
ny MA%9,B  
import org.rut.util.algorithm.SortUtil; >#kzPYsp  
eAl&[_o|S  
/** #fFEo)YG  
* @author treeroot 6IvLr+I  
* @since 2006-2-2 ^+P]_< 43  
* @version 1.0 ]vlQNd?  
*/ 2V  
public class ShellSort implements SortUtil.Sort{ I*24%z9  
:H?p^d e  
/* (non-Javadoc) p?!] sO1l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r3KV.##u,  
*/ *mBEF"  
public void sort(int[] data) { 51rM6 BT  
for(int i=data.length/2;i>2;i/=2){ NfN#q:w1  
for(int j=0;j insertSort(data,j,i); $GYy[-.`  
} ]];7ozS)X  
} ]{y ';MZ  
insertSort(data,0,1); C 4n5U^  
} r` 3)sc  
3)T5}_  
/** `yVJ `} hm  
* @param data |d Soq~Vz  
* @param j i %z}8GIt'  
* @param i AQFx>:in  
*/ KcSvf;sx  
private void insertSort(int[] data, int start, int inc) { (K2 p3M^  
int temp; #!5GGe{I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Bd7A-T)q!  
} ;z[yNW8  
} mMa7Eyaf  
} =XYfzR  
eDy}_By^  
} =|jOio=s:  
-nU_eDy  
快速排序: 1r8]EaI  
H%/$Rqg  
package org.rut.util.algorithm.support; H!xBFiOH$n  
on(W^ocnD  
import org.rut.util.algorithm.SortUtil; L ~  
kp0>8rkF  
/** O'p7^"M  
* @author treeroot +C+3DwN  
* @since 2006-2-2 "#p)Z{v"!  
* @version 1.0 7gJ`G@y  
*/ l\(t~Q  
public class QuickSort implements SortUtil.Sort{ 'T.> oP0>  
1~_]"Y'  
/* (non-Javadoc) PPmZ[N9(;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n'R 8nn6^  
*/ a#mdD:,cF  
public void sort(int[] data) { $+rdzsf)+/  
quickSort(data,0,data.length-1); .Wb),  
} Xe*  L^8+  
private void quickSort(int[] data,int i,int j){ 2 OGg`1XX  
int pivotIndex=(i+j)/2; '9b<r7\@  
file://swap 3nG(z>  
SortUtil.swap(data,pivotIndex,j); QXF>xZ~  
N($j;<Q  
int k=partition(data,i-1,j,data[j]); qC]D9 A  
SortUtil.swap(data,k,j); %u!#f<"[  
if((k-i)>1) quickSort(data,i,k-1); I]} MK?  
if((j-k)>1) quickSort(data,k+1,j); 7-(tTBH  
!IT']kA  
} D'</eJ  
/** )~WxNn3rx  
* @param data t<$yxD/R  
* @param i ()P?fed  
* @param j ^^)Pv#[3  
* @return 9@ ^/ON\O  
*/ kKCkjA:o##  
private int partition(int[] data, int l, int r,int pivot) { y_a~>S  
do{ v1;`.PWD  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S__ o#nf`%  
SortUtil.swap(data,l,r); 'av OQj]`K  
} ";xG[ne$Be  
while(l SortUtil.swap(data,l,r); esxU44  
return l; e+2!)w)[  
} J]Y." hi  
6KV&E8Gn  
} AR)&W/S)7,  
<FGM/e4  
改进后的快速排序: *BSL=8G{  
r{Xh]U&>k  
package org.rut.util.algorithm.support; o6svSS  
U-|g tND  
import org.rut.util.algorithm.SortUtil; <}B]f1zX  
<]"aP1+C  
/** `33+OW  
* @author treeroot ,Kdvt@vle  
* @since 2006-2-2 WT!%FQ9  
* @version 1.0 :p OX,  
*/ 0WQ0-~wx  
public class ImprovedQuickSort implements SortUtil.Sort { cT."  
-V<i4X<|,+  
private static int MAX_STACK_SIZE=4096; %*LdacjZ  
private static int THRESHOLD=10; :y]l`Mo -  
/* (non-Javadoc) _{-GR-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T0Y=g n  
*/ =<FFFoF*C_  
public void sort(int[] data) { )%)?M *  
int[] stack=new int[MAX_STACK_SIZE]; {KODwP'~  
.-nA#/2-  
int top=-1; d~YDg{H  
int pivot; Kf(% aDYq  
int pivotIndex,l,r; )M}bc1 _  
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stack[++top]=0; '"=C^f  
stack[++top]=data.length-1; =TyN"0@  
!a?o9<V  
while(top>0){ 3WaYeol`  
int j=stack[top--]; I:='LH,  
int i=stack[top--]; m3.d!~U\  
2,dG Rf  
pivotIndex=(i+j)/2; [7L1y) I(  
pivot=data[pivotIndex]; ?EKYKLwr  
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SortUtil.swap(data,pivotIndex,j); '0w'||#1  
$] w&`F-  
file://partition 6nxf <1  
l=i-1; ,TP^i 0  
r=j; @{~x:P5g  
do{ q"fK"H-j  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _RhCVoeB  
SortUtil.swap(data,l,r); u9'4q<>&  
} |9 }G  
while(l SortUtil.swap(data,l,r); Z@j0J[s  
SortUtil.swap(data,l,j); 44wY5nYNt  
p`XI(NI  
if((l-i)>THRESHOLD){ =q>eoXp  
stack[++top]=i; CJ KFNa  
stack[++top]=l-1; :m-HHWMN  
} 6ffrV  
if((j-l)>THRESHOLD){ 2Xgn[oI{  
stack[++top]=l+1; 5a-8/.}cP  
stack[++top]=j; /ptIxe  
} i7*4hYY  
^D/*Hp _  
} Dh J<\_;  
file://new InsertSort().sort(data); +5 @8't  
insertSort(data); <A+Yo3|7  
} 0Ac]&N d`  
/** ]vhh*  
* @param data O{LWQ"@y  
*/ Ks9"U^bPs  
private void insertSort(int[] data) { fv#e 8y  
int temp; Fy^!*M-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o^_z+JFwb  
} KJJ8P`Kx  
} DKYrh-MN  
} Z#MPlw0B  
Hd6Qy {,*-  
} =suj3.   
N CX!ss  
归并排序: 6-<,1Q'D  
Gz$DsaG  
package org.rut.util.algorithm.support; eH79,!=2  
%xkqiI3Ff  
import org.rut.util.algorithm.SortUtil; "l2_7ZXsPT  
x@(91f  
/** _^dWJ0  
* @author treeroot LWf+H 4iZ}  
* @since 2006-2-2 Q!|. ,?V  
* @version 1.0 }fL8<HM\'c  
*/ c\"oj&>A  
public class MergeSort implements SortUtil.Sort{ t$rWE|+_z  
qD Nqd  
/* (non-Javadoc) Z}$.Tm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T3+hxS  
*/ T? _$  
public void sort(int[] data) { ]r6,^"  
int[] temp=new int[data.length]; Y#NlbKkzu  
mergeSort(data,temp,0,data.length-1); 3fn6W)v?  
} ?OlYJ/!z3  
LYv+Sv  
private void mergeSort(int[] data,int[] temp,int l,int r){ <-X)<k  
int mid=(l+r)/2; u!X[xe;  
if(l==r) return ; ]%F3 xzOk  
mergeSort(data,temp,l,mid); |OuZaCJG  
mergeSort(data,temp,mid+1,r); qvhTc6oH  
for(int i=l;i<=r;i++){ .kvuI6H  
temp=data; w%j 6zsTz  
} i#&]{]}Qv  
int i1=l; vQYd!DSh  
int i2=mid+1; Xy=|qu  
for(int cur=l;cur<=r;cur++){ l'?/$?'e_Z  
if(i1==mid+1) _8DY9GaE  
data[cur]=temp[i2++]; >"N\ZC^  
else if(i2>r) 4|7L26,]5  
data[cur]=temp[i1++]; 1&U'pp|T  
else if(temp[i1] data[cur]=temp[i1++]; rJ KX4,M  
else DJT)7l{  
data[cur]=temp[i2++]; phEM1",4T  
} !Kd/ lDY  
} 9e1gjC\c  
6HFA2~A  
} bG;vl; C  
l*xA5ObV  
改进后的归并排序: u*}6)=+:  
B5P++aQ  
package org.rut.util.algorithm.support; Z9 }qds6 y  
Oa CkU  
import org.rut.util.algorithm.SortUtil; J1yy6Wq3[  
1 NLawi6  
/** 5{[3I|m{  
* @author treeroot .V 9E@_(  
* @since 2006-2-2 !W{|7Es?.  
* @version 1.0 |4x&f!%m  
*/ c[@>#7p`o  
public class ImprovedMergeSort implements SortUtil.Sort { j+PW9>Uh  
`:?padZG  
private static final int THRESHOLD = 10; fh:=ja?bM3  
X NnsMl  
/* **dGK_^T0  
* (non-Javadoc) mWta B>f  
* hFs0qPVY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DV]Kd 7  
*/ &%C4rAd2  
public void sort(int[] data) { _n Oio?  
int[] temp=new int[data.length]; !f yE Hk  
mergeSort(data,temp,0,data.length-1); ~)Ny8Dh  
} JxNjyw  
5H""_uw  
private void mergeSort(int[] data, int[] temp, int l, int r) { C7eaioW$  
int i, j, k; 0 l G\QT  
int mid = (l + r) / 2; ^k t#[N  
if (l == r) 6@; w%Ea  
return; 73Tg{~  
if ((mid - l) >= THRESHOLD) O/iew3YF  
mergeSort(data, temp, l, mid); Xj?j1R>GB  
else %pe7[/  
insertSort(data, l, mid - l + 1); 0ot=BlMu  
if ((r - mid) > THRESHOLD) {;=+#QK/  
mergeSort(data, temp, mid + 1, r); nLJ]tpw^DH  
else h:Npi `y  
insertSort(data, mid + 1, r - mid); t.485L %  
@_h/%>0  
for (i = l; i <= mid; i++) { nYTI\f/8v  
temp = data; =r:D]?8oC  
} H2p1gb#  
for (j = 1; j <= r - mid; j++) { %~ZOQ%c1  
temp[r - j + 1] = data[j + mid]; S'B7C>i`#N  
} C(7LwV  
int a = temp[l]; Hg*6I%D[So  
int b = temp[r]; `61VP-r  
for (i = l, j = r, k = l; k <= r; k++) { M@ ! {m  
if (a < b) { (*^_ wq-;  
data[k] = temp[i++]; / QSK$ZDC  
a = temp; 3[-L'!pOX3  
} else { ?v8B;="#w  
data[k] = temp[j--]; VL7zU->  
b = temp[j]; W(a=ev2sa  
} oRmN|d ~4  
} M I/ 9?B  
} X 4;+`  
]ZHC*r2i  
/** x]Nq|XK  
* @param data Gk'J'9*  
* @param l ^h4Q2Mv o  
* @param i [ wr0TbtV  
*/ Xp4pN{he  
private void insertSort(int[] data, int start, int len) { rq T@i(i  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); #eR*|W7o  
} _lu.@IX-  
} GriL< =?t  
} `cMa Fc-y/  
} ^A;v|U  
b"/P  
堆排序: [;h@ q}  
- "h {B  
package org.rut.util.algorithm.support; q}1AV7$Ai  
i *nNu-g  
import org.rut.util.algorithm.SortUtil; !NZFo S~  
oT_k"]~Q~2  
/** fL' 42  
* @author treeroot y3))I\QT  
* @since 2006-2-2 +Y'(,J  
* @version 1.0 +c+#InsY  
*/ ~~&8I!r e  
public class HeapSort implements SortUtil.Sort{ H [R|U   
^Me__Y  
/* (non-Javadoc) ,d&~#W]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RVlC8uJ;P  
*/ MJ4+|riB  
public void sort(int[] data) { oypX.nye_  
MaxHeap h=new MaxHeap(); ft?J|AG  
h.init(data); pV<18CaJ  
for(int i=0;i h.remove(); !pQQkZol  
System.arraycopy(h.queue,1,data,0,data.length); ppmDmi~X  
} QVQe9{ "0  
`hY%<L sI  
private static class MaxHeap{ %h2U(=/:  
1g^N7YF  
void init(int[] data){ 87r#;ND  
this.queue=new int[data.length+1]; nhiCV>@y  
for(int i=0;i queue[++size]=data;  G\ru%  
fixUp(size); svHs&v  
} Ycn*aR2  
} n;/yo~RR  
)Uo)3FAn  
private int size=0; wRi!eN?  
-]A,SBs  
private int[] queue; GbBcC#0  
w)5eD+n\-  
public int get() { &,3.V+Sz  
return queue[1]; |r%6;8A]i  
} cQA;Y!Q #  
k`'^e/  
public void remove() { [ !].G=8  
SortUtil.swap(queue,1,size--); #zZQ@+5zw  
fixDown(1); j^Bo0{{  
} ?2aglj*"v,  
file://fixdown ||0mfb  
private void fixDown(int k) { SB:-zQ5  
int j; ROW8YTYb  
while ((j = k << 1) <= size) { M(jSv  
if (j < size %26amp;%26amp; queue[j] j++; [qI, $ +  
if (queue[k]>queue[j]) file://不用交换 bmGIxBRq  
break; o/)]z  
SortUtil.swap(queue,j,k); QZYD;&iY&  
k = j; Nd%,V  
} > CZ|Vx  
} :-69,e  
private void fixUp(int k) { 9]xOu Cb  
while (k > 1) { tF O27z@  
int j = k >> 1; wHEt;rc(  
if (queue[j]>queue[k]) ![0\m2~iv  
break; OLXG0@  
SortUtil.swap(queue,j,k); ,1a6u3f,  
k = j; 18zv]v %  
} dE%rQE7'  
} ?WKFDL'_0j  
L^Fni~  
} =j#uH`jgW  
j[F\f>  
} LeF Z%y)F  
+j%!RS$ko  
SortUtil: +A>>Ak|s  
jL<:N 8  
package org.rut.util.algorithm; "fU=W|lY  
4703\ HK  
import org.rut.util.algorithm.support.BubbleSort; v8 I&~_b  
import org.rut.util.algorithm.support.HeapSort;  |'aGj  
import org.rut.util.algorithm.support.ImprovedMergeSort; ~*79rDs{  
import org.rut.util.algorithm.support.ImprovedQuickSort; v1oq[+  
import org.rut.util.algorithm.support.InsertSort; si.ZTG9m  
import org.rut.util.algorithm.support.MergeSort; |~Z.l  
import org.rut.util.algorithm.support.QuickSort; )CD4k:bm  
import org.rut.util.algorithm.support.SelectionSort; (1^AzE%U+Z  
import org.rut.util.algorithm.support.ShellSort; @/9#Z4&d0  
W_Z%CBjcT  
/** sC(IeGbX  
* @author treeroot $^?Mip  
* @since 2006-2-2 Y[R veF  
* @version 1.0 w/IYQC\v  
*/ X3-pj<JLY  
public class SortUtil { b8r?Dd"T8  
public final static int INSERT = 1; '=Nb`n3%  
public final static int BUBBLE = 2; mCb(B48]%X  
public final static int SELECTION = 3; %iPWg  
public final static int SHELL = 4; FAX|.!US*p  
public final static int QUICK = 5; sf<S#;aYqn  
public final static int IMPROVED_QUICK = 6; M ~z A  
public final static int MERGE = 7; !ow:P8K?  
public final static int IMPROVED_MERGE = 8; :k*'M U}  
public final static int HEAP = 9; Ub2t7MU  
&)zNu  
public static void sort(int[] data) { 3CL/9C>  
sort(data, IMPROVED_QUICK); C& BRyo  
} `*g(_EZsS  
private static String[] name={ ,&e0~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" w9< <|ZaU  
}; xQ+UZc  
X ^8@T  
private static Sort[] impl=new Sort[]{ ^~9fQJNs  
new InsertSort(), BKvX,[R2  
new BubbleSort(), aMe]6cWHV>  
new SelectionSort(), ]V0V8fU|  
new ShellSort(), Z$LWZg  
new QuickSort(), dWqKt0uh!  
new ImprovedQuickSort(), `<2k.aW4e8  
new MergeSort(), Q3[MzIk 4  
new ImprovedMergeSort(), =(2y$,6g?  
new HeapSort() )S@e&a|  
}; +pXYBwH 7Q  
|;sL*Vr  
public static String toString(int algorithm){ f>!)y-7  
return name[algorithm-1]; c<bV3,  
} U*(/eEtd-  
>HNBTc=~t  
public static void sort(int[] data, int algorithm) { Ne#FBRu5  
impl[algorithm-1].sort(data); kl%%b"h'  
} M15Ce)oB1(  
>cU#($X$^  
public static interface Sort { nWb*u  
public void sort(int[] data); @6h ,#8#  
} nsn  
gR1vUad7  
public static void swap(int[] data, int i, int j) { ,.DTJ7H+  
int temp = data; E:vgG|??  
data = data[j]; H1>~,zc>E  
data[j] = temp; {*mf Is  
} 7+ +Fak  
} -Pt.  
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