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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。 )?IA`7X  
插入排序:  aC }1]7  
H!>oLui  
package org.rut.util.algorithm.support; .&}4  
95 .'t}  
import org.rut.util.algorithm.SortUtil; 3XlnI:w =  
/** MMr7,?,$  
* @author treeroot hYv 6-5_  
* @since 2006-2-2 <J }9.k  
* @version 1.0 |QTqa~~B  
*/ 8EEQV}4  
public class InsertSort implements SortUtil.Sort{ IS4K$Ac.  
W#\};P  
/* (non-Javadoc) Z#:@M[HH{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m'"VuH?^  
*/ 2CgIY89O  
public void sort(int[] data) { 6')SJ*|yS  
int temp; @>nk^ l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M-K@n$k   
} KdMA58)  
} 2xdJ(\JWM  
} @#Uiy5N  
I_I;.Ik  
} WCl;#=  
o4'4H y  
冒泡排序: aq\TO?  
@wgGnb)  
package org.rut.util.algorithm.support; mL5f_Fb+  
wR+`("2{r  
import org.rut.util.algorithm.SortUtil; BOQV X&g%  
s i.a]k/f  
/** ~(L+4]  
* @author treeroot [K@!JY  
* @since 2006-2-2 ~)IJE+e>}  
* @version 1.0 WJ4UJdf'  
*/ "v(]"L  
public class BubbleSort implements SortUtil.Sort{ `/ReJj&~  
uWtS83i  
/* (non-Javadoc) 2pNJWYW"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "_@+/Iy.  
*/ _"bvT?|  
public void sort(int[] data) {  KP-z  
int temp; /D]r "-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ :9q^  
if(data[j] SortUtil.swap(data,j,j-1); UMW^0>Z!v  
} $hp?5K M  
} (IHBib "  
} ]%8;c  
} ;U3Vows  
*"sDaN0@R  
} ,vw`YKg  
Pc4c Sw#5  
选择排序: 1gej$G@  
J7^T!7V.  
package org.rut.util.algorithm.support; xQ 3u  
t\d;}@bl  
import org.rut.util.algorithm.SortUtil; M]TVaN$v#  
c O>:n  
/** 6@ ^`-N;  
* @author treeroot pYUkd!K"  
* @since 2006-2-2 .+ o>  
* @version 1.0 S,v>*AF  
*/ 8B+^vF   
public class SelectionSort implements SortUtil.Sort { V*uu:  
t U= b~  
/* }eFUw  
* (non-Javadoc) ?o5#Ve$-X  
* @@mW+16  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vUx$[/<  
*/ yzb&   
public void sort(int[] data) { WREGRy  
int temp; (`/i1#nR  
for (int i = 0; i < data.length; i++) { Z@O e}\.$  
int lowIndex = i; c;}n=7,>:L  
for (int j = data.length - 1; j > i; j--) { >Mw =}g@P  
if (data[j] < data[lowIndex]) { \J&#C(pn  
lowIndex = j; Cy'W!qH  
} `^k<.O  
} l 8us6  
SortUtil.swap(data,i,lowIndex); .h^Ld,Chj  
} luog_;{h+  
}  HcS^3^Y  
}mZ*f y0t  
} vg1s5Y qk  
Xb 1^Oj  
Shell排序: m?G+#k;K  
uxiX"0)g>  
package org.rut.util.algorithm.support; o;I86dI6C  
iGNKf|8{  
import org.rut.util.algorithm.SortUtil; xmd$Jol^  
{\Y,UANZ  
/** oioN0EuDk  
* @author treeroot Ps4A B#3  
* @since 2006-2-2 `&7? +s  
* @version 1.0 ]r5Xp#q2  
*/ 1 K',Vw_  
public class ShellSort implements SortUtil.Sort{ iqP0=(^m  
x l=|]8w  
/* (non-Javadoc) )PNk O3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 90D.G_45  
*/ F$p,xFH#  
public void sort(int[] data) { }gaKO 5  
for(int i=data.length/2;i>2;i/=2){ 8GQs9  
for(int j=0;j insertSort(data,j,i); U<byR!qLie  
} (7!(e  ,  
} vG:,oB}  
insertSort(data,0,1); v3#47F)  
} vjS7nR"T  
g&5VorGx  
/** 0k]N%!U  
* @param data sRI8znus  
* @param j :b)@h|4  
* @param i T,@7giQg@  
*/ 0_izTke  
private void insertSort(int[] data, int start, int inc) { e$I:[>  
int temp; -q|M=6gOs  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c3-bn #  
} Gl1$W=pR:  
} Ia" Mi+{  
} e{S`iO  
.AS,]*?Zn%  
} R_DQtLI  
NPabM(<`  
快速排序: X~!?t }  
G&Sg .<hn  
package org.rut.util.algorithm.support; !\v3bOi&  
=5F49  
import org.rut.util.algorithm.SortUtil; c~;.m<yrf  
6Z:|"AwC2  
/** H[U*' 2TJ  
* @author treeroot |REU7?B  
* @since 2006-2-2 3E:<  
* @version 1.0 [-a /]  
*/ l).Ijl}AH;  
public class QuickSort implements SortUtil.Sort{ B)*%d7=x  
LnIJ wD  
/* (non-Javadoc) 1-<Xi-=^{t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qILr+zH  
*/ 5J3kQ;5Q?  
public void sort(int[] data) { '-{jn+,  
quickSort(data,0,data.length-1); oaE3Aa  
} ]P^ +~  
private void quickSort(int[] data,int i,int j){ 6Wp:W1E{`  
int pivotIndex=(i+j)/2; jL>r*=K)%  
file://swap (>23[;.0  
SortUtil.swap(data,pivotIndex,j); :{<HiJdp  
#xB%v  
int k=partition(data,i-1,j,data[j]); x$sQ .aT  
SortUtil.swap(data,k,j); w"J(sVy4  
if((k-i)>1) quickSort(data,i,k-1); ~coG8r"o  
if((j-k)>1) quickSort(data,k+1,j); ?c*d z{  
~o$=(EC  
} Sj+#yct-  
/** cFQa~  
* @param data *x!5I$~J  
* @param i I}x*AM 7+  
* @param j B$j,:^  
* @return =r8(9:F!  
*/ c:5BQr '  
private int partition(int[] data, int l, int r,int pivot) { ]T`qPIf;yJ  
do{ 7ac3N  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /8R1$7  
SortUtil.swap(data,l,r); E u   
} '@bA_F(  
while(l SortUtil.swap(data,l,r); X)S4rW%  
return l; yE>DQ *  
} SQK6BEjE8  
llJ)u!=5  
} 0Jrk(k!  
TB\CSXb  
改进后的快速排序: .X9^A,9  
F9" K  
package org.rut.util.algorithm.support; ^,gKA\Wli  
5`Z#m:+u  
import org.rut.util.algorithm.SortUtil; . b"e`Bw_=  
~@bKQ>Xw  
/** @VAhmYz  
* @author treeroot Qzv_|U  
* @since 2006-2-2 +Oa1FvoEA  
* @version 1.0 e2Dj%=`EU  
*/ 2UquN0  
public class ImprovedQuickSort implements SortUtil.Sort { BHYEd}M  
49 D*U5o  
private static int MAX_STACK_SIZE=4096; umeb&\:8S-  
private static int THRESHOLD=10; Oh: -Y]m=  
/* (non-Javadoc) %;S5_K,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gg9W7%t/  
*/ }sZ]SE  
public void sort(int[] data) { -XBNtM_ "  
int[] stack=new int[MAX_STACK_SIZE]; l=yO]a\QZ  
A(B2XBS!?  
int top=-1; as8<c4:v  
int pivot; 2},}R'aR  
int pivotIndex,l,r; H#D=vx'  
I{ $|Ed1  
stack[++top]=0; _ U\vHa$#  
stack[++top]=data.length-1; =9M-N?cV  
*V/SI E*8  
while(top>0){ f$L5=V  
int j=stack[top--]; sAxn ; `  
int i=stack[top--]; ?/~1z*XUW  
_)Ms9RN  
pivotIndex=(i+j)/2; D~Su82 2  
pivot=data[pivotIndex]; |(fWT}tg  
>=bO@)[  
SortUtil.swap(data,pivotIndex,j); li[g =A,  
aw`mB,5U  
file://partition 2iu;7/  
l=i-1; <fxYTd<#D[  
r=j; &'R]oeag  
do{ K67x.PZ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Onl:eG;@  
SortUtil.swap(data,l,r); mP-+];gg  
} sf LBi~*j  
while(l SortUtil.swap(data,l,r); 8c#*T%Vf  
SortUtil.swap(data,l,j);  2r[,w]  
UkUdpZ.[il  
if((l-i)>THRESHOLD){ C`ok{SNtUy  
stack[++top]=i; R[z6 c )  
stack[++top]=l-1; l"Css~^  
} Vy biuP  
if((j-l)>THRESHOLD){ @ 9uwcM1F  
stack[++top]=l+1; 8PQ& 7o  
stack[++top]=j; ``={FaV~m  
} )}R0'QGd  
2Y,s58F  
} @`3)?J[w  
file://new InsertSort().sort(data); '=r.rW5  
insertSort(data); k$zDofdfp  
} C$_H)I  
/** h1"#DnK7  
* @param data ' ySWf,Q^  
*/ 6Z3v]X  
private void insertSort(int[] data) { ,J[sg7v cv  
int temp; L6FUC6x"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r8qee$^M  
} 607#d):Y  
} J&5|'yVX  
} "_^FRz#h  
7YsFe6D"  
} cNHN h[ C  
_L"rygit  
归并排序: ve$P=ZuM  
OS3J,f}<=  
package org.rut.util.algorithm.support; OIN]u{S  
(GZm+?  
import org.rut.util.algorithm.SortUtil; g\ke,r6  
]fR 3f  
/** V!oyC$eV  
* @author treeroot `jJb) z3D  
* @since 2006-2-2 :Qf^@TS}O  
* @version 1.0 6D$xG"c  
*/ P~~RK& +i  
public class MergeSort implements SortUtil.Sort{ |(wx6H:  
k&Sg`'LG8  
/* (non-Javadoc) 'h:4 Fzo<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _PuMZjGL  
*/ 2 `#|;x^<  
public void sort(int[] data) { %j=7e@   
int[] temp=new int[data.length]; _onHe"%{  
mergeSort(data,temp,0,data.length-1); ALFw[1X  
} <#c2Hg%jh  
NoMEe<  
private void mergeSort(int[] data,int[] temp,int l,int r){ S"lcePN  
int mid=(l+r)/2; XVY^m}pMe  
if(l==r) return ; 8gZ5D  
mergeSort(data,temp,l,mid);  W?.Y%wc0  
mergeSort(data,temp,mid+1,r); }JI5,d  
for(int i=l;i<=r;i++){ LnBkd:>}  
temp=data; 4kx#=MLt  
} 1j}o. 0\  
int i1=l; <Wl! Qog'  
int i2=mid+1; 1[!Idl?m  
for(int cur=l;cur<=r;cur++){ HzW ZQ6o  
if(i1==mid+1) \PL92HV  
data[cur]=temp[i2++]; 0ya_[\  
else if(i2>r) pPh$Jvo]  
data[cur]=temp[i1++]; KxY|:-"Tt  
else if(temp[i1] data[cur]=temp[i1++]; R(csJ4F  
else  ?9AByg  
data[cur]=temp[i2++]; #x'C  
} xe 6x!  
} 2(UT;PSI  
uu(.,11`  
} "3Ec0U \s  
n] &fod  
改进后的归并排序: :^l`m9  
0^hz1\g  
package org.rut.util.algorithm.support; ?Hq`*I?b9  
3B>!9:w~f  
import org.rut.util.algorithm.SortUtil; 6MZfoR  
vq x;FAqZ  
/** iE$0-Qe[3  
* @author treeroot $)kIYM&  
* @since 2006-2-2 J)*y1   
* @version 1.0 4H{L>e  
*/ i<-#yL5  
public class ImprovedMergeSort implements SortUtil.Sort { @T1-0!TM')  
MYLq2g\  
private static final int THRESHOLD = 10; 4/HyO\?z5  
ww=< =  
/* _))_mxV{  
* (non-Javadoc) 5Pn$@3  
* y9:|}Vh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e=YvM g  
*/ N-lXC"{)  
public void sort(int[] data) { xJ,V !N  
int[] temp=new int[data.length]; {<&x9<f9  
mergeSort(data,temp,0,data.length-1); cD7q;|+  
} $lUZm\R|k  
^8B#-9Ph b  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?9/%K45  
int i, j, k; F7a\Luae  
int mid = (l + r) / 2; `$Q $l  
if (l == r) 24]O0K  
return; KrG$W/<tg  
if ((mid - l) >= THRESHOLD) xqLLoSte  
mergeSort(data, temp, l, mid); GQT|T0>Ro  
else _bFX(~37z?  
insertSort(data, l, mid - l + 1); S__+S7]Nr  
if ((r - mid) > THRESHOLD) u2o6EU`  
mergeSort(data, temp, mid + 1, r); :*Sl\:_X)  
else XVE(p3-  
insertSort(data, mid + 1, r - mid); J/=b1{d"n  
v cqL  
for (i = l; i <= mid; i++) { Gh|q[s*k  
temp = data; "c=\?   
} !i0:1{.  
for (j = 1; j <= r - mid; j++) { .DIHd/wA  
temp[r - j + 1] = data[j + mid]; H2[ S]`?  
} =p ^Sn,t  
int a = temp[l]; =f?|f  
int b = temp[r]; qJUu9[3'm  
for (i = l, j = r, k = l; k <= r; k++) { (7&[!PS  
if (a < b) { %5$yz|:  
data[k] = temp[i++]; 8q}`4wCD$  
a = temp; <{:$ ]3  
} else { cl)%qIXj}H  
data[k] = temp[j--]; ,}F{V>dhn  
b = temp[j]; enE8T3   
} /id(atiF^  
} 6imDA]5N&  
} e*=N\$  
>4b-NS/}0  
/** `TBau:ElI  
* @param data LQ373 j-  
* @param l ~O&3OL:L  
* @param i Cz8=G;\  
*/ AI/xOd!a  
private void insertSort(int[] data, int start, int len) { 9Iy>oV  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); szGp<xv_p  
} @'jC>BS8`  
} H~Hh $-z  
} u6$fF=  
} >@` D@_v  
pd/{yX M  
堆排序: q>?uB4>^  
 ze{  
package org.rut.util.algorithm.support; [r<lAS{ .  
hZU @35~BN  
import org.rut.util.algorithm.SortUtil; +'x|VPY.PG  
5W(G~m?jC6  
/** ;gP@d`s  
* @author treeroot 0_J<=T?\"s  
* @since 2006-2-2 wRCGfILw  
* @version 1.0 IJhJfr0)Oo  
*/ $i7iv  
public class HeapSort implements SortUtil.Sort{ DfXXN  
@Q 8E)k@  
/* (non-Javadoc) !/[/w39D0o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ckHHD|  
*/ YQ:F Bj  
public void sort(int[] data) { 4en[!*  
MaxHeap h=new MaxHeap(); -NGY+1  
h.init(data); f,wB.MN  
for(int i=0;i h.remove(); ep>*]'  
System.arraycopy(h.queue,1,data,0,data.length); 7`9J.L&,;  
} WyF1Fw  
0Rz'#O32V  
private static class MaxHeap{ oj/,vO:QT  
*F42GiBZR  
void init(int[] data){ :<=A1>&8  
this.queue=new int[data.length+1]; tF}Vs}  
for(int i=0;i queue[++size]=data; NifzZEX  
fixUp(size); 87.b7 b.  
} ~G+o;N,V  
} wxYB-Wh<  
j-e/nZR@  
private int size=0; :FcYjw  
sN]O]qYXJ  
private int[] queue; ?nZQTO7  
PQ9.aJdw@-  
public int get() { + KGZk?%  
return queue[1]; ]k &Y )  
} wDJbax?  
0.7* 2s-  
public void remove() { "^_9t'0  
SortUtil.swap(queue,1,size--); BIovPvq;i  
fixDown(1); ?nN3K   
} HIM>%   
file://fixdown -b'93_ZTu:  
private void fixDown(int k) { Z\Qa6f!  
int j; iU]py  
while ((j = k << 1) <= size) { VbQ9o  
if (j < size %26amp;%26amp; queue[j] j++; j{PuZ^v1  
if (queue[k]>queue[j]) file://不用交换 v,qK= ]ty  
break; K.'II9-{  
SortUtil.swap(queue,j,k); 8JvF4'zx  
k = j; s"G;rcS}#  
}  (o`"s~)  
} :wtr{,9rZ  
private void fixUp(int k) { G4DuqN~2m  
while (k > 1) { $$QbcnOf$  
int j = k >> 1; ,QW>M$g{  
if (queue[j]>queue[k]) G,,c,  
break; 3N%%69JN)  
SortUtil.swap(queue,j,k); O :P%gz4  
k = j; d9@!se9&Z  
} 2pa: 3O  
} %{'hpT~h  
cEzWIS?pp\  
} HivmKn`  
KFxy,Z$-4  
} k\,01Y^  
;;4xpg  
SortUtil: u`GzYG-L  
GR&T Z   
package org.rut.util.algorithm; -UgD  
pi`sx[T@{Z  
import org.rut.util.algorithm.support.BubbleSort; zSs5F_  
import org.rut.util.algorithm.support.HeapSort; ODE9@]a  
import org.rut.util.algorithm.support.ImprovedMergeSort; -?)` OHc^  
import org.rut.util.algorithm.support.ImprovedQuickSort; w s(9@  
import org.rut.util.algorithm.support.InsertSort; @mM])V  
import org.rut.util.algorithm.support.MergeSort; !B 36+W+  
import org.rut.util.algorithm.support.QuickSort; ]u~6fknm  
import org.rut.util.algorithm.support.SelectionSort; 6uWzv~!*D  
import org.rut.util.algorithm.support.ShellSort; -8F~Tffx  
nFE0y3GD8  
/** Sw!/ I PO  
* @author treeroot hN% h.;s  
* @since 2006-2-2 D#lx&J.s  
* @version 1.0 Nc4e,>$]&  
*/ %\xwu(|kN  
public class SortUtil { SVvR]T&_  
public final static int INSERT = 1; :m|%=@]`  
public final static int BUBBLE = 2; 7vBB <\  
public final static int SELECTION = 3; \gd.Bl  
public final static int SHELL = 4; t%jB[w&,os  
public final static int QUICK = 5; N"d*pi#h  
public final static int IMPROVED_QUICK = 6; 6fxf|R\  
public final static int MERGE = 7; 9r@T"$V#c  
public final static int IMPROVED_MERGE = 8; Rx e sK  
public final static int HEAP = 9; 6.fahg?E  
+{* @36A5A  
public static void sort(int[] data) { Q=hf,/N  
sort(data, IMPROVED_QUICK); t-#Y6U}b+  
} \W73W_P&g  
private static String[] name={ H}KJd5A7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !wl3}]q  
}; (bP\_F5D  
e%#8]$  
private static Sort[] impl=new Sort[]{ h#p1wK;N  
new InsertSort(), NG!~<Kx   
new BubbleSort(), !Pmv  
new SelectionSort(), )KvQaC  
new ShellSort(), (C;oot,  
new QuickSort(), FBfyW- 7  
new ImprovedQuickSort(), G~Oj}rn  
new MergeSort(), v&:R{  
new ImprovedMergeSort(), ,~@0IKIA Q  
new HeapSort() lqC a%V  
}; GdN'G  
^s'ozCk 0  
public static String toString(int algorithm){ 0q%=Vs~@g  
return name[algorithm-1]; _J}vPm  
} eit>4xMu  
MYqxkhcLH1  
public static void sort(int[] data, int algorithm) { 8YI.f  
impl[algorithm-1].sort(data); ,^JP0Vc*  
} Q^q G=  
?&Y3Fr)%  
public static interface Sort { |qra.\  
public void sort(int[] data); %;,D:Tv=&  
} |0Kj0u8T  
Q!DQ!;Br6  
public static void swap(int[] data, int i, int j) { m4:b?[  
int temp = data; F8 4LMk?U  
data = data[j]; Jt4T)c9  
data[j] = temp; c9e  }P  
} dO Y+| P\  
} h[d|y_)f  
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