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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。 ~]q>}/&YLo  
插入排序: keFH CC  
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package org.rut.util.algorithm.support; {Ay dt8  
"%p7ft  
import org.rut.util.algorithm.SortUtil; %D5F7wB  
/** e[s}tjx  
* @author treeroot _54gqD2C,  
* @since 2006-2-2 &BRa5`  
* @version 1.0 iaLZ|\`3a  
*/ PjH'5Y  
public class InsertSort implements SortUtil.Sort{ 8g Z)c\  
hidQOh  
/* (non-Javadoc) AI`k }sA~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ri~$hs!  
*/ H2+b3y-1a]  
public void sort(int[] data) { ?{e}ouKYX1  
int temp; @`dlhz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g5lb3`a3  
} tRZ4\Bu  
} .6xMLo,R  
} %S'+x[ 4W  
b?c/J {me  
} 6uT*Fg-G  
*mbzK*  
冒泡排序: /R&h#;l  
Gx6%Z$2n  
package org.rut.util.algorithm.support; Od)y4nr3~  
gdA2u;q  
import org.rut.util.algorithm.SortUtil; H!&_Tv[  
uYWD.]X;[  
/** +`_0tM1  
* @author treeroot oQObr  
* @since 2006-2-2 WgqSw%:$H  
* @version 1.0 n:P:im?,y*  
*/ (:HT|gKoE  
public class BubbleSort implements SortUtil.Sort{ G}9f/$'3  
1^^8,.'  
/* (non-Javadoc) ;RRw-|/Wm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ir/uHN@  
*/ {(!JYz~P  
public void sort(int[] data) { <r.QS[:h  
int temp; d?T!)w  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \yC/OLXq  
if(data[j] SortUtil.swap(data,j,j-1); r9OgezER  
} &29jg_'W  
} 849,1n^  
} kM{8zpn  
} 7XK0vKmW3  
yV )fJ_  
} 0hV#]`9`gN  
nqm=snh  
选择排序: Z$JJ0X  
_X~O 6e-!  
package org.rut.util.algorithm.support; #-<Go'yF  
4&sf{tI  
import org.rut.util.algorithm.SortUtil; hHU=lnO  
HFZ'xp|3dn  
/** 9`*Eeb>  
* @author treeroot {0Y6jk>I  
* @since 2006-2-2 ^`'\eEa  
* @version 1.0  o+'|j#P  
*/ 5P%#5Yr2  
public class SelectionSort implements SortUtil.Sort { gS5MoW1  
_ERtL5^  
/* G<n75!  
* (non-Javadoc) $3G^}A"  
* 1o%#kf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  3Iv^  
*/ CqlxE/|  
public void sort(int[] data) { $R/@8qnP W  
int temp; }7[]d7  
for (int i = 0; i < data.length; i++) { ={sjoMW  
int lowIndex = i; uR5+")r@S  
for (int j = data.length - 1; j > i; j--) { 3NLn}  
if (data[j] < data[lowIndex]) { i[IFD]Xy!j  
lowIndex = j; Lo{wTYt:J  
} ou<3}g  
} :J]'c}  
SortUtil.swap(data,i,lowIndex); :5,~CtF5 `  
} y>aO90wJ  
} 1 >j,v+  
qBX_v5pvVA  
} f7~dn#<@  
'E3T fM  
Shell排序: Y b3ckktY  
p%>sc  
package org.rut.util.algorithm.support; =J IceLL  
z7bJV/f  
import org.rut.util.algorithm.SortUtil; eTvWkpK+  
['=O>YY  
/** "Zgwe,#  
* @author treeroot /DHgwpJ  
* @since 2006-2-2 S F*C'  
* @version 1.0 p{^:b6  
*/ 4k<o  
public class ShellSort implements SortUtil.Sort{ +ig%_QED[\  
$qQYxx@  
/* (non-Javadoc) >X$JeME3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'NhQBk  
*/ E=ijt3  
public void sort(int[] data) { J&>@ >47  
for(int i=data.length/2;i>2;i/=2){ 6+IhI?lI=  
for(int j=0;j insertSort(data,j,i); I]v2-rB&-  
} (yq e 4  
} C6;2Dd]"N  
insertSort(data,0,1); ZyUcL_   
} !HDb{f  
$:F+Nf 8  
/** \mc0fY  
* @param data U]sAYp^$  
* @param j sX%n`L  
* @param i B@&sG 5ES  
*/ Bdw33z*m  
private void insertSort(int[] data, int start, int inc) { dj Ojd,  
int temp; 5;/n`Bd  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); **hQb$  
} uGMzU&+  
} *#XZ*Ga  
} &L+uu',M0c  
= UH3.  
} \N*([{X  
4=([v;fc  
快速排序: Q%JI-&K  
#u hUZq  
package org.rut.util.algorithm.support; 2e1KF=N+  
DO*U7V02  
import org.rut.util.algorithm.SortUtil; -+rzc&h  
W\~^*ny P6  
/** H`CID*Ji  
* @author treeroot lI=<lmM0|/  
* @since 2006-2-2 (SBhU:^h  
* @version 1.0 oZvG Kf  
*/ O:wG/et  
public class QuickSort implements SortUtil.Sort{ <giBL L!  
10FiA;  
/* (non-Javadoc) ^9[Q;=R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eIkKsgr>  
*/ Food<(!.>  
public void sort(int[] data) { X/~uF 9a'<  
quickSort(data,0,data.length-1); e?]5q ez  
} W "'6 M=*  
private void quickSort(int[] data,int i,int j){ .HS6DOQ  
int pivotIndex=(i+j)/2; ':vZ&  
file://swap eO!9;dJ  
SortUtil.swap(data,pivotIndex,j); 1#A$&'&\J;  
CQ!pt@|d  
int k=partition(data,i-1,j,data[j]); k7CKl;Fck  
SortUtil.swap(data,k,j); ' P?h?w^T  
if((k-i)>1) quickSort(data,i,k-1); 4nsJZo#S/  
if((j-k)>1) quickSort(data,k+1,j); Q1,sjLO-a  
YExgUE|  
}  'o-4'  
/** pZnp!!G  
* @param data tqGrhOt  
* @param i 5?7AzJl>  
* @param j @j/2 $  
* @return ;,&cWz  
*/ ==dKC;  
private int partition(int[] data, int l, int r,int pivot) { YaC%69C'  
do{ $H)^o!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4@ PA+(kvS  
SortUtil.swap(data,l,r); w 9dkJo  
} F` U~(>u'  
while(l SortUtil.swap(data,l,r); `6U!\D  
return l; L'= \|r  
} R=z])  
vF27+/2+R  
} S+T/(-W  
h aAY=:  
改进后的快速排序: "?8)}"/f  
vY4sU@+V  
package org.rut.util.algorithm.support; n=.P46|  
G!q[NRu  
import org.rut.util.algorithm.SortUtil; 1t  R^  
Qm%PpQ^Lz3  
/** ^m qEKy<  
* @author treeroot J usU5 e|  
* @since 2006-2-2 }s~c(sL?;  
* @version 1.0 %fj5 ;}E.  
*/ b[74$W{  
public class ImprovedQuickSort implements SortUtil.Sort { {X!OK3e  
/WuYg OI  
private static int MAX_STACK_SIZE=4096; xlI =)ak{  
private static int THRESHOLD=10; <Riz!(G  
/* (non-Javadoc) BQ-x#[ %s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &`r/+B_W  
*/  1MN!  
public void sort(int[] data) { C96/   
int[] stack=new int[MAX_STACK_SIZE]; !jj`Ht)  
P%3pM*.  
int top=-1; :X0L6y)u  
int pivot; zPby+BP  
int pivotIndex,l,r; =XP[3~  
]S6Gz/4aV+  
stack[++top]=0; @-$8)?`q  
stack[++top]=data.length-1; nKx)R^]k  
AC,RS 7  
while(top>0){ $^]K611w9  
int j=stack[top--]; I1Q!3P  
int i=stack[top--]; XiW1X6  
<tr]bCu}  
pivotIndex=(i+j)/2; ![_x/F9  
pivot=data[pivotIndex]; 51|ky-  
pQz1!0  
SortUtil.swap(data,pivotIndex,j); [YDSS/  
p* >z:=  
file://partition ]fyfL|(;  
l=i-1; jq+(2  
r=j; um2a#6uo  
do{ p+d-7'?I  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .biq)L e  
SortUtil.swap(data,l,r); 4#$#x=:  
} rAenx Z,tF  
while(l SortUtil.swap(data,l,r); mWp>E`l  
SortUtil.swap(data,l,j); 86ao{l6lC  
@*6fEG{,q  
if((l-i)>THRESHOLD){ \x<8   
stack[++top]=i; *6Wiq5M>.  
stack[++top]=l-1; 1!#N-^qk  
} B~Sj#(WEa  
if((j-l)>THRESHOLD){ &LLU@|  
stack[++top]=l+1; ]eL# bJ  
stack[++top]=j; fUT[tkb/!  
} ?UXF z'  
dOhSqx56  
} }%wd1`l7  
file://new InsertSort().sort(data); ?cV,lak  
insertSort(data); zm_8a!.  
} o4Q?K.9c  
/** {2\Y%Y'}*  
* @param data  TGCB=e  
*/ f{sT*_at  
private void insertSort(int[] data) { 2b"*~O;  
int temp; !=[Y yh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;+Jx,{ )  
} 0Hnj<|HL  
} kCBtK?g  
} #AD_EN9  
T+Oqd\05.+  
} 1Bh"'9-!JT  
r.C6` a  
归并排序: oRV}Nz7hr  
({uW-%  
package org.rut.util.algorithm.support; S=@+qcI  
 }k^uup*{  
import org.rut.util.algorithm.SortUtil; .;? Bni  
{U5sRM|I  
/** A  6(`  
* @author treeroot e" v%m 'G  
* @since 2006-2-2 i5e10@Q{  
* @version 1.0 :'%6  
*/ 'Y?-."eKh  
public class MergeSort implements SortUtil.Sort{ v">?`8V  
1T^WMn:U  
/* (non-Javadoc) N`8K1{>BH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]2AOW}=  
*/ @Z5q2Q  
public void sort(int[] data) { k/K)nH@)  
int[] temp=new int[data.length]; s QDgNJbU  
mergeSort(data,temp,0,data.length-1); 'HA{6v,y  
} I68u%fCv  
Y{Z&W9U  
private void mergeSort(int[] data,int[] temp,int l,int r){ }Fe~XO`  
int mid=(l+r)/2; BQu |qr q  
if(l==r) return ; 8_Oeui(i  
mergeSort(data,temp,l,mid); "j>X^vn  
mergeSort(data,temp,mid+1,r); s^k G]7  
for(int i=l;i<=r;i++){ QoD_`d  
temp=data; &Vlno*  
} eg[EFI.h  
int i1=l; t@%w:*&  
int i2=mid+1; g6M>S1oOO  
for(int cur=l;cur<=r;cur++){ z/7q#~J,  
if(i1==mid+1) E7uIur=g!  
data[cur]=temp[i2++]; ]c(FgY c  
else if(i2>r) +R'8$  
data[cur]=temp[i1++]; +=tdgw/  
else if(temp[i1] data[cur]=temp[i1++]; Wf~^,]9N  
else )GB#"2  
data[cur]=temp[i2++]; nrEI0E9  
} oo'9ZE/%  
} = 0 ~4k#  
oW^b,{~V  
} -#\T  
&;PxDlY5  
改进后的归并排序: 8Km&3nCv$Q  
$AK ^E6  
package org.rut.util.algorithm.support; PGTEIptX7  
7oZ :/6_>  
import org.rut.util.algorithm.SortUtil; \u[x<-\/6  
&V38)83a  
/** oz!)x\m*H  
* @author treeroot `z!AjAT-G  
* @since 2006-2-2 o;8$#gyNY  
* @version 1.0 =s\$i0A2  
*/ ZFZ'&"+  
public class ImprovedMergeSort implements SortUtil.Sort { J8'"vc}=  
z "@^'{.l  
private static final int THRESHOLD = 10; 4.9qB  
d4y#n=HnnV  
/* Mh%{cLM  
* (non-Javadoc) mWviWHK  
* *i"9D:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xm m,- u  
*/ TmgC {_  
public void sort(int[] data) { r)<A YX]J  
int[] temp=new int[data.length]; ,np=m17  
mergeSort(data,temp,0,data.length-1); 2Kxb(q"  
} jWdviS9&g  
]\yIHdcDi  
private void mergeSort(int[] data, int[] temp, int l, int r) { cy%M$O|hX5  
int i, j, k; _}[ Du/c  
int mid = (l + r) / 2; }?[];FB  
if (l == r) 6h9(u7(-N  
return; ]E9iaq6Z  
if ((mid - l) >= THRESHOLD) !Dd'*ee-;  
mergeSort(data, temp, l, mid); . ,|C>^  
else e@3SF  
insertSort(data, l, mid - l + 1); !LK xZ"  
if ((r - mid) > THRESHOLD) {;$oC4  
mergeSort(data, temp, mid + 1, r); jz!I +  
else M5bE5C  
insertSort(data, mid + 1, r - mid); d9{lj(2P  
teok*'b:  
for (i = l; i <= mid; i++) { J/]%zwDwS  
temp = data; %" iX3  
} }dc0ZRKgx  
for (j = 1; j <= r - mid; j++) { z}vT8qoX  
temp[r - j + 1] = data[j + mid]; 6wlLE5  
} &h:4TaD  
int a = temp[l]; Bii'^^I;?  
int b = temp[r]; ()lgd7|+  
for (i = l, j = r, k = l; k <= r; k++) { EjP;P}_iK  
if (a < b) { 6,t6~Uo/  
data[k] = temp[i++]; & SXw=;B  
a = temp; rm-d),Zt  
} else { M=,pn+}y>  
data[k] = temp[j--]; %&L1 3:  
b = temp[j]; b++r#Q g  
} 6uE20O<z]  
} C'#KTp4!1  
} 0["93n}r  
,{*g Q%7  
/** 2 ZK]}&yC  
* @param data UyGo0POW  
* @param l ]J Yz(m[   
* @param i +C% 6jGGh  
*/ & bTCTDZh  
private void insertSort(int[] data, int start, int len) { n Bm ]?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); dGZie .Zx  
} o2fih%p?1  
} }aWy#Oe  
} tLzLO#/n  
} ]B/> =t"E  
_H$Lu4b)N  
堆排序: hjL;B 'IL  
hBU)gP75  
package org.rut.util.algorithm.support; w=GMQ8  
).KA0-  
import org.rut.util.algorithm.SortUtil; 5]O{tSj  
gWj-@o\  
/** B.N#9u-vW  
* @author treeroot ` o)KG,  
* @since 2006-2-2 7xnj\9$m  
* @version 1.0 ZTR9e\F  
*/ 1EU4/6!C  
public class HeapSort implements SortUtil.Sort{ _=g&^_ #t  
%a/3*vz/I%  
/* (non-Javadoc) /A9RmTb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8lQ}-8  
*/ 5 kHaZ Q  
public void sort(int[] data) { 217G[YE-  
MaxHeap h=new MaxHeap(); =j>xu|q  
h.init(data); Y j oe|  
for(int i=0;i h.remove(); <Km9Mq  
System.arraycopy(h.queue,1,data,0,data.length); 4  OPY  
} *'((_ NZ>  
m CO1,?  
private static class MaxHeap{ ox-m)z `7  
P~ObxY|  
void init(int[] data){ aUw-P{zp%  
this.queue=new int[data.length+1];  O3sV)  
for(int i=0;i queue[++size]=data; (?e%w}  
fixUp(size); Ph3;;,v '  
} 53t_#Yte  
} Dg&6@c|  
x^1udK^re  
private int size=0; 5FOMh"!z\  
=MNp;  
private int[] queue; yGR{-YwU!  
*OLqr/ yb  
public int get() { 1Q@]b_"Xh  
return queue[1]; ImN'o4vo  
} /8GdCac  
/1OCK=  
public void remove() { c~<;}ve^z  
SortUtil.swap(queue,1,size--); J&8KIOz14Z  
fixDown(1); lu.]R>w  
} +a5F:3$  
file://fixdown O`Tz^Q /D  
private void fixDown(int k) { 8c5YX  
int j; ]}3s/NJi  
while ((j = k << 1) <= size) { \_Bj"K  
if (j < size %26amp;%26amp; queue[j] j++; P j   
if (queue[k]>queue[j]) file://不用交换 C|ZPnm>f30  
break; RU)(|;  
SortUtil.swap(queue,j,k); wn"}<ka  
k = j; "BQnP9  
} nCYkUDnZ  
} Ty g>Xv  
private void fixUp(int k) { b,'O|s]"Sc  
while (k > 1) { 01A{\O1$j  
int j = k >> 1; ` -_!%m/  
if (queue[j]>queue[k]) >jt2vU@t.  
break; SwOW%o  
SortUtil.swap(queue,j,k); x;~:p;]J2F  
k = j; K1@ Pt}  
} </[.1&S+\  
} S=4o@3%$  
9xR5Jm>k  
} ovKM;cRs/  
ABCm2$<  
} Yg&(kmm  
?X@!jB,Pv  
SortUtil: 7P1Pk?pxy  
4)gG_k  
package org.rut.util.algorithm; x7S\-<8  
!Gmnck&+  
import org.rut.util.algorithm.support.BubbleSort; @j|E"VYY  
import org.rut.util.algorithm.support.HeapSort; &5 "!  0  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3^/w`(-{@  
import org.rut.util.algorithm.support.ImprovedQuickSort; >V6t L;+  
import org.rut.util.algorithm.support.InsertSort; =UKxf  
import org.rut.util.algorithm.support.MergeSort; _[HZ[9c!  
import org.rut.util.algorithm.support.QuickSort; L-|l$Ti"  
import org.rut.util.algorithm.support.SelectionSort; @:>]jp}uq  
import org.rut.util.algorithm.support.ShellSort; 0:V /z3?  
I!hh_  
/** l5D)UO  
* @author treeroot ,iV%{*p]  
* @since 2006-2-2 @f-:C+(Nsg  
* @version 1.0 4p"'ox#  
*/ Bve|+c6W  
public class SortUtil { *qzdt^[ xo  
public final static int INSERT = 1; zxn|]P bS  
public final static int BUBBLE = 2; ep6+YK:cn  
public final static int SELECTION = 3; flCT]ZR  
public final static int SHELL = 4; VM$n|[C~  
public final static int QUICK = 5; $yx\2   
public final static int IMPROVED_QUICK = 6; 6ld4'oM  
public final static int MERGE = 7; ">[#Ops-;$  
public final static int IMPROVED_MERGE = 8; *D|a`R!Y  
public final static int HEAP = 9; %n|  
_wKwiJs  
public static void sort(int[] data) { Jxvh;  
sort(data, IMPROVED_QUICK); h ;*x1BVE  
} YYQvt  
private static String[] name={ @;egnXxF<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =gj?!d`  
}; ?oYO !  
IAO5li3  
private static Sort[] impl=new Sort[]{ Wk[a|>  
new InsertSort(), BgXZr,?  
new BubbleSort(), 6l\5J6x  
new SelectionSort(), AlQhKL}|s  
new ShellSort(), mG1~rI  
new QuickSort(), C~2!@<y  
new ImprovedQuickSort(), p]kEH\ sh  
new MergeSort(), TsFhrtnx&X  
new ImprovedMergeSort(), -lo?16w  
new HeapSort() 9"P+K.%  
}; YdhV a!Y  
<@Q27oEuA  
public static String toString(int algorithm){ d]0:r]e  
return name[algorithm-1]; w;,34qbf  
} & 'u|^d  
it}h8:^<  
public static void sort(int[] data, int algorithm) { o898pg  
impl[algorithm-1].sort(data); 27!F B@k-  
} 9VW/Af  
`jeATxWv  
public static interface Sort { t=Oq<r  
public void sort(int[] data); T f3CyH!k  
} rn-bfzoDS  
QATRrIj{e  
public static void swap(int[] data, int i, int j) {  }#m9Q[  
int temp = data; c 4AJ`f.5  
data = data[j]; |[rn/  
data[j] = temp; IP`lx  
} y_9\07va<  
} *J4!+GD  
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