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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。 d/ ^IL*O  
插入排序: qWheoyAB  
K~vJ/9"|R  
package org.rut.util.algorithm.support; t_jn-Idcf  
Rtz~:v%  
import org.rut.util.algorithm.SortUtil; qsp.`9!  
/** F-wAQ:  
* @author treeroot Au'y(KB  
* @since 2006-2-2 %rG4X  
* @version 1.0 k3qQU)  
*/ vvv'!\'#  
public class InsertSort implements SortUtil.Sort{ v,ZYh w  
N'VTdf?  
/* (non-Javadoc) ?-<lIF Fh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m%`YAD@2z  
*/ T,/rC{  
public void sort(int[] data) { f(w>(1&/B  
int temp; rZ `1G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I?}jf?!oM  
} ;,[0bmL  
} MGm*({%  
} )1 T2u  
O|,9EOrP  
} p?y2j  
o13jd NQ-  
冒泡排序: cb /Q<i  
+Pb:<WT}%  
package org.rut.util.algorithm.support;  /RJ  
~^' ,4<K-}  
import org.rut.util.algorithm.SortUtil; F]yB=  
E+O{^C=  
/** }w$2,r gA  
* @author treeroot oYkd%N9P  
* @since 2006-2-2 S4_/%~?  
* @version 1.0 Pj <U|\-?  
*/ NS z }  
public class BubbleSort implements SortUtil.Sort{ oL@-<;zKO  
T<pG$4_  
/* (non-Javadoc) F)hj\aHm k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \t7yH]:>@  
*/ ][S q^5`  
public void sort(int[] data) { 6XWNJb  
int temp; %m |I=P  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ZX:rqc  
if(data[j] SortUtil.swap(data,j,j-1); }4YzP 4  
} ad: qOm  
} .g*N +T6O  
} jXE:aWQht  
} B>L7UQ6_[  
!{.CGpS ]  
} Njg$~30  
BS##nS-[  
选择排序: g4h{dFb|_  
oN,1ig  
package org.rut.util.algorithm.support; gQ{ #C'  
wli cuY?  
import org.rut.util.algorithm.SortUtil; JLE&nbKS  
gPKf8{#%e  
/** :Ph>\aG  
* @author treeroot "V>}-G&  
* @since 2006-2-2 %i9 e<.Ot  
* @version 1.0 ]!/U9"_e"B  
*/ 1p. c6[9 -  
public class SelectionSort implements SortUtil.Sort { ~-zTY&c_  
l e'RU1k  
/* RJWO h  
* (non-Javadoc) w1)TnGT  
* 9i5?J]o^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (lM,'  
*/ F<I*?${[  
public void sort(int[] data) { ;98&5X\u<  
int temp; Xk4wU$1F  
for (int i = 0; i < data.length; i++) { l)[|wPf  
int lowIndex = i; tS2 &S 6u  
for (int j = data.length - 1; j > i; j--) { (kLaXayn  
if (data[j] < data[lowIndex]) { {Ge{@1  
lowIndex = j; UN.;w3`Oc  
} ur}'Y^0iR  
} DU%E883  
SortUtil.swap(data,i,lowIndex); 5I2,za&e  
} src9EeiV  
} blgA`)GI  
27D*FItc  
} TWpw/osW  
= J;I5:J  
Shell排序: S/`#6  
ez'NHodwk2  
package org.rut.util.algorithm.support; ZG^<<V$h  
] ]U)wg  
import org.rut.util.algorithm.SortUtil; %b^4XTz  
@A1f#Ed<  
/** $t;:"i>  
* @author treeroot 7~XC_Yc1  
* @since 2006-2-2 s6|'s<x"j  
* @version 1.0  :RnUNz  
*/ ~b~Tq  
public class ShellSort implements SortUtil.Sort{ j9h/`Bn  
Uqel UL}  
/* (non-Javadoc) wb.yGfJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;W?#l$R  
*/ RK!9(^Ja  
public void sort(int[] data) { Mr)t>4  
for(int i=data.length/2;i>2;i/=2){ h=A  
for(int j=0;j insertSort(data,j,i); "b hK %N;  
} TGF$zvd  
} [K3 te  
insertSort(data,0,1); 4^W!,@W  
} Ku ,wI86  
z{W C w  
/** u4Nh_x8\Nr  
* @param data F=Bdgg9s  
* @param j @Y/&qpo$#W  
* @param i UT\4Xk<  
*/ /yG7!k]Eg  
private void insertSort(int[] data, int start, int inc) { OeqKKVuQ  
int temp; inGUN??  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?sk>Mzr  
} f`hZb  
} "A}sD7xy9  
} 6'^E ],:b  
TTVmm{6  
} L(;$(k-/(  
a dqS.xs  
快速排序: ,->K)Rs;  
UDG1F_&h  
package org.rut.util.algorithm.support; 9)oi_U.  
* 1;4&/93o  
import org.rut.util.algorithm.SortUtil; ^`kwSC  
./F:]/Mt  
/** =5\*Zh1  
* @author treeroot [on_=N{W[  
* @since 2006-2-2 V5K/)\#  
* @version 1.0 t%Jk3W/f  
*/ kGV:=h  
public class QuickSort implements SortUtil.Sort{ N#ggT9>X  
i3w~&y-  
/* (non-Javadoc) gQPw+0w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QJ XP -  
*/ 9 -pt}U  
public void sort(int[] data) { %aNm j)L  
quickSort(data,0,data.length-1); o`iA&  
} l5T[6C  
private void quickSort(int[] data,int i,int j){ fd )v{OC  
int pivotIndex=(i+j)/2; f'=u`*(b7  
file://swap 8%,#TMOg  
SortUtil.swap(data,pivotIndex,j); M@xU59$@  
d1cp=RbC  
int k=partition(data,i-1,j,data[j]); Y%?S:&GH  
SortUtil.swap(data,k,j); Cy[G7A%  
if((k-i)>1) quickSort(data,i,k-1); p*b_ "aF1  
if((j-k)>1) quickSort(data,k+1,j); =Dq&lm,n  
T [SK>z  
} )$!b`u  
/** *S}@DoXS  
* @param data $Lp [i <O]  
* @param i OIPY,cj~  
* @param j u!K1K3T6k  
* @return FoetP`   
*/ xF[%R{Mn'  
private int partition(int[] data, int l, int r,int pivot) { 8s)b[Z5  
do{ `6~0W5  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :K6JrS  
SortUtil.swap(data,l,r); *a Z1 4  
} 76!LMNf  
while(l SortUtil.swap(data,l,r); M8~3 0L  
return l; #s{^fUN6  
} '{ _ X1  
3&y-xZu]  
} AXlVH%'  
F@?-^ E@  
改进后的快速排序: inaO{ny y  
:IZAdlz[@  
package org.rut.util.algorithm.support; yh E%X  
>`AK'K8{M  
import org.rut.util.algorithm.SortUtil; PuJ3#H T  
#Nh'1@@  
/** EnWv9I<  
* @author treeroot -Rpra0o. C  
* @since 2006-2-2 <[[yV  
* @version 1.0 yUnV%@.  
*/ UQu6JkbLL  
public class ImprovedQuickSort implements SortUtil.Sort { :(A&8<}-6  
MKfK9>a  
private static int MAX_STACK_SIZE=4096; pT|s#-}  
private static int THRESHOLD=10; }<^mUG  
/* (non-Javadoc) OInl?_,,T#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (p5q MP]L  
*/ t$$YiO  
public void sort(int[] data) { bny5e:= d  
int[] stack=new int[MAX_STACK_SIZE]; *\XOQWrF  
>Hnm.?-AWl  
int top=-1; V[(fE=cIN~  
int pivot; f]r*;YEc4  
int pivotIndex,l,r; c]{}|2u  
jC'h54 ,Mr  
stack[++top]=0; }.A]=Ew  
stack[++top]=data.length-1; !Vyf2xS"  
V*@aE  
while(top>0){ 5REFz  
int j=stack[top--]; 0OM^,5%8  
int i=stack[top--]; M=raKb?F  
p3Ux%/ZqPV  
pivotIndex=(i+j)/2; \#,2#BmO"E  
pivot=data[pivotIndex]; ZPH_s^  
2p&$bf t  
SortUtil.swap(data,pivotIndex,j); <YW)8J  
Z{B  e  
file://partition Fl_}Auj{&(  
l=i-1; v":q_w<k  
r=j; :6Nb,Hh~  
do{ ],weqs  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a<&K^M&  
SortUtil.swap(data,l,r); <G}Lc  
} d3c.lD)L9  
while(l SortUtil.swap(data,l,r); Tow=B  
SortUtil.swap(data,l,j); Rt?CE jy  
Ca0s m  
if((l-i)>THRESHOLD){ `$/a-K}  
stack[++top]=i; }? _KZ)  
stack[++top]=l-1; SZW_V6\t>  
} xS1|t};  
if((j-l)>THRESHOLD){ Odo)h  
stack[++top]=l+1; ;0Z-  
stack[++top]=j; j1;[6XG  
} qHub+"2  
-*k2:i`  
} &za }TH m  
file://new InsertSort().sort(data); v/ N[)<  
insertSort(data); &{? M} 2I  
} sbmtx/%U  
/** +bE{g@%@ +  
* @param data %4LoEm=U  
*/ c0zcR)=mL  
private void insertSort(int[] data) { (c[u_~ ;  
int temp; TX=894{nGh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _p6 r5Y  
} 5.\p]>|G1  
} mS'Ad<  
} j{Px}f(=  
}!_z\'u  
} x:Q\pZ  
sm`c9[E  
归并排序: Aars\   
m FTuqujO  
package org.rut.util.algorithm.support; iF+:j8 b  
g8.z?Ia#5Z  
import org.rut.util.algorithm.SortUtil; !+eU  
!K(  
/** X|a{Z*y;r*  
* @author treeroot q~}oU5  
* @since 2006-2-2 Tv"T+!Z  
* @version 1.0 UDI\o1Rbp  
*/ $_F_%m"\  
public class MergeSort implements SortUtil.Sort{ j;`pAN('  
rci,&>L"  
/* (non-Javadoc) oT\K P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ga 5s9wC  
*/ cjL)M=pIS  
public void sort(int[] data) { a_c(7bQ  
int[] temp=new int[data.length]; pL,XHR@Iv  
mergeSort(data,temp,0,data.length-1); u9 &$`N_G  
} QQW}.>N  
b@CjnAZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ f,yl'2{  
int mid=(l+r)/2; dE"_gwtX  
if(l==r) return ; uaO.7QSwN  
mergeSort(data,temp,l,mid); "Vq= Ph  
mergeSort(data,temp,mid+1,r); J>v[5FX+  
for(int i=l;i<=r;i++){ Md~SzrU  
temp=data; Z|C,HF+m.  
} )>1}I_1j)  
int i1=l; H[hJUR+#  
int i2=mid+1; %"v:x?d$$o  
for(int cur=l;cur<=r;cur++){ Gl>\p  
if(i1==mid+1) D`@a*YIq  
data[cur]=temp[i2++]; wKpBH}  
else if(i2>r) Q$ew.h  
data[cur]=temp[i1++]; N~flao^  
else if(temp[i1] data[cur]=temp[i1++]; Nqj@p<y/q  
else 4 *}H3-`  
data[cur]=temp[i2++]; vCi`htm%  
} zH~P-MqC  
} MJiVFfYW  
ntH`\ )xi  
} F2 B(PGa7  
h |]cZMGo  
改进后的归并排序: OpaRQ=  
\H .Cmm^I  
package org.rut.util.algorithm.support; [@9S-$Xa  
_{`Z?lt  
import org.rut.util.algorithm.SortUtil; >s5}pkAv|e  
=J1V?x=l@  
/** p K-tj  
* @author treeroot }ex4dhx2M  
* @since 2006-2-2 (W h)Ov"  
* @version 1.0 {Lal5E4-  
*/ lOcFF0'  
public class ImprovedMergeSort implements SortUtil.Sort { \'Ca1[y@B  
HK :K~h  
private static final int THRESHOLD = 10; lPR^~&/  
;-`NT` #2  
/* SY5}Bu#  
* (non-Javadoc) @K!JE w\  
* pG"wQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  7V5c`:"  
*/ eHvUgDt  
public void sort(int[] data) { d2eXN3"  
int[] temp=new int[data.length]; XB!qPh .  
mergeSort(data,temp,0,data.length-1); ;)h?P.]  
} :!s7B|_U  
*KNfPh#wi}  
private void mergeSort(int[] data, int[] temp, int l, int r) { :PBFFLe  
int i, j, k; ,G0"T~  
int mid = (l + r) / 2; [KR%8[e  
if (l == r) ^S`hKv&87  
return; 2n3&uvf'TL  
if ((mid - l) >= THRESHOLD) f5F-h0HF`[  
mergeSort(data, temp, l, mid); I;rW!Hb  
else B0yJ9U= Fj  
insertSort(data, l, mid - l + 1); C5^WJx[  
if ((r - mid) > THRESHOLD) q>(?Z#sB  
mergeSort(data, temp, mid + 1, r); lt-3OcC  
else Y\WQ0'y  
insertSort(data, mid + 1, r - mid); 1Z ~C3)T=  
?jz\[0)s  
for (i = l; i <= mid; i++) { WD\Yx~o  
temp = data; m4~ |z  
} B](R(x>L  
for (j = 1; j <= r - mid; j++) { Ze>R@rK  
temp[r - j + 1] = data[j + mid]; P Ptmh. }e  
} 5{(4%  
int a = temp[l]; .+S%hT,v6i  
int b = temp[r]; Zq&'a_  
for (i = l, j = r, k = l; k <= r; k++) { K 3\a~_0  
if (a < b) { +%TgX&a  
data[k] = temp[i++]; 4v>SXch  
a = temp; `^/8dIya  
} else { Ub f5 :  
data[k] = temp[j--]; P<X?  
b = temp[j]; Khd A;bF  
} ! $mY.uu  
} kttJTP77t  
}  ^[SW07o~  
aPlEM_escS  
/** uxn+.fA  
* @param data mC@v,"  
* @param l <xSh13<  
* @param i &-FG}|*4M  
*/ =c \(]xX  
private void insertSort(int[] data, int start, int len) { f|(9+~K/7&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Il4]1d|  
} MOh&1]2j5  
} ~x(|'`  
} iLv -*%%  
} 3r#['UmT  
:%9R&p:'ar  
堆排序: P7W|e~]Yq  
?,7!kTRH  
package org.rut.util.algorithm.support; Es#:0KH].v  
]v}W9{sY  
import org.rut.util.algorithm.SortUtil; vfn[&WN]  
FVkl# Qy~  
/** 5uG^`H@X  
* @author treeroot e46`"}r  
* @since 2006-2-2 |pZ7k#%  
* @version 1.0 ]8wm1_qV  
*/ PeIi@0vA  
public class HeapSort implements SortUtil.Sort{ Lk]|;F-2i  
9h+Hd&=  
/* (non-Javadoc) ,j>FC j>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @7"n X  
*/ 9=$ pV==  
public void sort(int[] data) { JAKs [@:  
MaxHeap h=new MaxHeap(); 3mofp`e  
h.init(data); nygGI_[l  
for(int i=0;i h.remove(); HD#>K 7  
System.arraycopy(h.queue,1,data,0,data.length); ;39a`  
} zd2_k 9  
0kCo0{+n  
private static class MaxHeap{ c;/vzIJj  
VF11eZ"  
void init(int[] data){ qbSI98r w  
this.queue=new int[data.length+1]; g$C]ln>"9m  
for(int i=0;i queue[++size]=data; p=UW ^95  
fixUp(size); 075IW"p'  
} clyp0`,7  
} Y(`Bc8h  
*YH!L{y  
private int size=0; ):4)8@]5M  
x`+M#A()/  
private int[] queue; 5"40{3  
\nP79F0%2  
public int get() { o=94H7@  
return queue[1]; (rJ-S"^u  
} 3}g>/F ~  
,F->*=  
public void remove() { G6{ PrV#  
SortUtil.swap(queue,1,size--); kD+#|f  
fixDown(1); Zs}h>$E5_B  
} PW%ith1)<  
file://fixdown -*[)CR-{  
private void fixDown(int k) { 8IL5 :7H8  
int j; v -)<nox  
while ((j = k << 1) <= size) { <(TAA15Xol  
if (j < size %26amp;%26amp; queue[j] j++; Ep;?%o,G  
if (queue[k]>queue[j]) file://不用交换 SJ22  
break; cM9> V2:P  
SortUtil.swap(queue,j,k); <,p$eQ)T%  
k = j; #O~pf[[L  
} yn+m,K/  
} xcl;~"c *  
private void fixUp(int k) { 6(?@B^S>2  
while (k > 1) { D1deh=  
int j = k >> 1; ?>ZrdfTwz,  
if (queue[j]>queue[k]) C$q-WoTM(  
break; `}P9[HP  
SortUtil.swap(queue,j,k); 27[e0 j  
k = j; d< XY"Y%  
} .$d:c61X  
} +KExK2=  
3,i`FqQa  
} >cjxu9Vr1K  
%r6_['T  
} D->E&#  
fh_:ung  
SortUtil: H/[(T%]o  
1Zk1!> ?  
package org.rut.util.algorithm; N1g;e?T ':  
k}kwr[  
import org.rut.util.algorithm.support.BubbleSort; wp8-(E^  
import org.rut.util.algorithm.support.HeapSort; VIGLl'8p  
import org.rut.util.algorithm.support.ImprovedMergeSort; 0 )PZS>  
import org.rut.util.algorithm.support.ImprovedQuickSort; aVV E 2:M  
import org.rut.util.algorithm.support.InsertSort; gjK: a@{  
import org.rut.util.algorithm.support.MergeSort; tculG|/  
import org.rut.util.algorithm.support.QuickSort; NI:OL  
import org.rut.util.algorithm.support.SelectionSort; |9 *$6Y  
import org.rut.util.algorithm.support.ShellSort; yTbtS-  
K; hP0J  
/** c 3| Lk7Q  
* @author treeroot ML$#&Z@ *7  
* @since 2006-2-2 j&.JAQ*2;  
* @version 1.0 Tf$>^L  
*/ N0D5N(kH%  
public class SortUtil { +NB5Fd4  
public final static int INSERT = 1; k-*k'S_  
public final static int BUBBLE = 2; A ?~4Pe  
public final static int SELECTION = 3; *WzPxQ_  
public final static int SHELL = 4; v(sS$2J|}  
public final static int QUICK = 5; # 6?2 2Os  
public final static int IMPROVED_QUICK = 6; WH $*\IGJL  
public final static int MERGE = 7; *x#5S.i1  
public final static int IMPROVED_MERGE = 8; ?OO !M  
public final static int HEAP = 9; `ALQSo~l  
u0+<[Ia'q  
public static void sort(int[] data) { )('{q}JxV  
sort(data, IMPROVED_QUICK); Nt<Ac&6 s  
} WpI5C,3Z!l  
private static String[] name={ U!"RfRD.<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S)2Uoj  
}; hZe9Y?)  
3PzF^8KJ  
private static Sort[] impl=new Sort[]{ )086u8w )y  
new InsertSort(), bX`]<$dr3  
new BubbleSort(), S=w~bz, /  
new SelectionSort(), *0a7H$iQ(]  
new ShellSort(), S +73 /Vs  
new QuickSort(), bw#\"uJ  
new ImprovedQuickSort(), }LIf]Y K  
new MergeSort(), 9% P$e=Ui#  
new ImprovedMergeSort(), '+^XL6$L  
new HeapSort() 8fWnKWbbjw  
}; UU =,Brb  
pek5P4W_  
public static String toString(int algorithm){ N9Fu  
return name[algorithm-1]; HwMe^e;  
} |])Ko08*tE  
7V\M)r{q7  
public static void sort(int[] data, int algorithm) { r_a1oO:  
impl[algorithm-1].sort(data); \gZjq]3  
} +(q r{G?  
,qgR+]?({  
public static interface Sort { 7BA9zs392  
public void sort(int[] data); aJNsJIY+  
} ).C>>1ZC  
k|_ >I  
public static void swap(int[] data, int i, int j) {  mxvV~X %  
int temp = data; a5g1.6hF  
data = data[j]; 79lG~BGE  
data[j] = temp; ?0E-Lac=  
} "0"8Rp&V|  
} IP 1{gMG  
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