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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。 3BCD0 %8  
插入排序: 7pY :.iVO  
hPNMp@Nm6  
package org.rut.util.algorithm.support; #I453  
w5%i  
import org.rut.util.algorithm.SortUtil; =HsE:@  
/** 300w\9fn&  
* @author treeroot VSDua.  
* @since 2006-2-2 2 HQ3G~U  
* @version 1.0 LYRpd  
*/ HrsG^x  
public class InsertSort implements SortUtil.Sort{ #L+:MA7H  
7LrmI~P  
/* (non-Javadoc) b\`S[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `a MU2  
*/ lcm [l  
public void sort(int[] data) { Z#H<+S(  
int temp; _7;:*'>a4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3rKJ<(-2/  
} ]'(D*4  
} =gQ9>An  
} &LAXNk2  
=8?Kn@nMN  
} |SjRss:i+  
;mk[!  
冒泡排序: }H\I[5*  
\_8wU' 7  
package org.rut.util.algorithm.support; xxu  
]1<GZ`  
import org.rut.util.algorithm.SortUtil; 9/(jY$Ar  
v}Ju2}IK  
/** rjK`t_(=  
* @author treeroot @0@ZlH wM  
* @since 2006-2-2 sg^|dS{3D  
* @version 1.0 w(6n  
*/ s b;q)Rh  
public class BubbleSort implements SortUtil.Sort{ ?![[la+f  
P7.bn  
/* (non-Javadoc) &R%'s1]o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,?|$DY+=  
*/ OA[e}Vn  
public void sort(int[] data) { ] c7X~y  
int temp; Mq Ai}z%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ vW=L{8zu  
if(data[j] SortUtil.swap(data,j,j-1); .N qXdari  
} jhm??Af  
} =otO@22Np  
} , [|aWT%9  
} ZKrLp8l\  
-U=Ci  
} @9B*V~ <  
\CMZ_%~wU  
选择排序: A<X?1$  
O9sEaVX  
package org.rut.util.algorithm.support; \uJRjw+  
Q# B0JT1  
import org.rut.util.algorithm.SortUtil; $QC1l@[sM  
\c:$ eF  
/** '*b]$5*p  
* @author treeroot 9aJIq{`E  
* @since 2006-2-2 VIT|#  
* @version 1.0 LWF,w7v[L  
*/ Z]]Ur  
public class SelectionSort implements SortUtil.Sort { !,m  
CP~ZIIip"  
/* \x}\)m_7M<  
* (non-Javadoc) IA@>'O  
* (h3L=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aaR& -M@  
*/ ;XurH%Mg  
public void sort(int[] data) { Kp`{-dUf  
int temp; 5.9<g>C  
for (int i = 0; i < data.length; i++) { XVN`J]XHk  
int lowIndex = i; =:^aBN#  
for (int j = data.length - 1; j > i; j--) { ?q:|vt  
if (data[j] < data[lowIndex]) { 3=YpZ\l}  
lowIndex = j; __g k:a>oQ  
} -r={P _E6  
} 4#B'pJMw9  
SortUtil.swap(data,i,lowIndex); Y &C b  
} q<dG}aj  
} *5%vU|9b  
nF,F#V8l  
} &<PIm  
P]43FPb  
Shell排序: V\;Xa0  
_B0(1(M<2  
package org.rut.util.algorithm.support; \wK&wRn)  
zw>L0gC  
import org.rut.util.algorithm.SortUtil; $a M5jH<  
4E39]vb  
/** :R Iz6Tz  
* @author treeroot b6N[t _,  
* @since 2006-2-2 p{g4`o  
* @version 1.0 ;Bs~E  
*/ C`[<6>&y  
public class ShellSort implements SortUtil.Sort{ 8:,($a/KF  
K92j BR  
/* (non-Javadoc) m4mE7Wn.3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O[Vet/^)  
*/ s?w2^<P  
public void sort(int[] data) { 1xB}Ed*k  
for(int i=data.length/2;i>2;i/=2){ [eX]x  
for(int j=0;j insertSort(data,j,i); ]vvYPRV76  
} ("9bV8:@B  
} .AfZ5s]/F  
insertSort(data,0,1); cFUD$mp  
} &lQ%;)'  
vd%g'fTy9  
/** 4)S99|1  
* @param data LhJUoX  
* @param j srGOIK.  
* @param i (pxH<k=Ah  
*/ .kT]^rv ;  
private void insertSort(int[] data, int start, int inc) { 7n7Xyb  
int temp; XX8HSw!w  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3uLG$`N   
} Q(bOar5  
} {R}F4k  
} iW5cEI%tb  
q/#e6;x  
} ]r Uj<[O  
YOl$sgg}  
快速排序: X1Yw=t~a  
F]\ Sk'}&  
package org.rut.util.algorithm.support; t'n@yX_  
3UZd_?JI[^  
import org.rut.util.algorithm.SortUtil; x-BU$bx5  
@ ^{`!>Vt  
/** XO+BZB`F  
* @author treeroot M/N8bIC! Q  
* @since 2006-2-2 Q{l,4P  
* @version 1.0 bA^uzE  
*/ _~<sb,W  
public class QuickSort implements SortUtil.Sort{ D:z'`v0j  
uvId],dQ5  
/* (non-Javadoc) OQ-) 4Uk}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8q^}AT<C  
*/ YuK+ N  
public void sort(int[] data) { [G<ga80  
quickSort(data,0,data.length-1); yw^Pok5.  
} (dy(.4W\  
private void quickSort(int[] data,int i,int j){ Q{[@n  
int pivotIndex=(i+j)/2; wQhNQ(H~\  
file://swap `i.BB jx`  
SortUtil.swap(data,pivotIndex,j); ,mHME~  
=zkN63S  
int k=partition(data,i-1,j,data[j]); -DI >O/  
SortUtil.swap(data,k,j); 7he73  
if((k-i)>1) quickSort(data,i,k-1); 1m*)MZ)  
if((j-k)>1) quickSort(data,k+1,j); EA"hie7  
lL D#|T3  
} \V? .^/  
/** mY"7/dw<v  
* @param data TnF~'RZYb  
* @param i )DgXsT  
* @param j 1 G>Ud6(3<  
* @return 4ud(5m;Rle  
*/ nu0pzq\6  
private int partition(int[] data, int l, int r,int pivot) { 2"IV  
do{ 8y LcTA$T  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Q:A#4Z  
SortUtil.swap(data,l,r); nLN0zfhE#  
} 9\Ii$Mp  
while(l SortUtil.swap(data,l,r); [LYO'-g^F#  
return l; F>fCp  
} w!F>fcm  
O_FB^BB  
} Nk'<*;e  
4MgN  
改进后的快速排序: OX_y"]utU  
^^a6 (b  
package org.rut.util.algorithm.support; >?$2`I  
thjr1y.e  
import org.rut.util.algorithm.SortUtil; Z)@vJZ*7(  
\5ls <=S.  
/** n7t}G'*Y!^  
* @author treeroot _.5{vGyxr  
* @since 2006-2-2 nBy-/BU&  
* @version 1.0 E'08'8y  
*/ )U&9d  
public class ImprovedQuickSort implements SortUtil.Sort { 67j kU!  
^ja]e%w#  
private static int MAX_STACK_SIZE=4096; yXNr[ 7  
private static int THRESHOLD=10; y ``\^F  
/* (non-Javadoc) JRl=j2z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H$`U] =s|  
*/ wWl ?c  
public void sort(int[] data) { ;s +/'(*  
int[] stack=new int[MAX_STACK_SIZE]; iLy^U*yK  
s= Fp[>qA  
int top=-1; zMSwU]4I!  
int pivot; R{g= N%O  
int pivotIndex,l,r; ;K<VT\  
S;~eI8gQ"  
stack[++top]=0; 4Mt3<W5  
stack[++top]=data.length-1; R@c])\^]  
>Pw5! i\  
while(top>0){ YVIE v  
int j=stack[top--]; DyC*nE;  
int i=stack[top--]; (0{Dn5MH  
vk7IqlEQ  
pivotIndex=(i+j)/2; Z(MZbzY7Hq  
pivot=data[pivotIndex]; CFpBosoFt^  
j.=:S;  
SortUtil.swap(data,pivotIndex,j); 9Yt|Wj  
'2lV(>"  
file://partition v "l).G?  
l=i-1; u?,>yf.;s  
r=j; X!KX4H  
do{ a\P:jgF  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +XWTu!  
SortUtil.swap(data,l,r); ?_eLrz4>L^  
} @)pC3Vi^  
while(l SortUtil.swap(data,l,r); 9qap#A  
SortUtil.swap(data,l,j); >|3Y+X  
?!RbS#QV}  
if((l-i)>THRESHOLD){ M5I`i{Gw  
stack[++top]=i; '\bokwsP  
stack[++top]=l-1; T+Yv5l  
} x^lc T  
if((j-l)>THRESHOLD){ }qWnn>h9xv  
stack[++top]=l+1; KI9Pw]]{-  
stack[++top]=j; 9PB%v.t5 y  
} |f_'(-v`E  
c.>f,vtcn  
} qiz(k:\o  
file://new InsertSort().sort(data); K|%Am4  
insertSort(data); ^G!cv  
} $0V+<  
/** Uu7]`Ul  
* @param data RP~nLh3=\  
*/ utck{]P  
private void insertSort(int[] data) { tA1?8`bQ  
int temp; @b(@`yz.a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wDvu2iC=  
} u!X~!h-6~  
}  q0ktABB  
} v!I z&M:z  
)@! fLA T  
} dA<%4_WZty  
}83 8F&  
归并排序: .$\-{)  
ip?]&5s  
package org.rut.util.algorithm.support; qJG;`Ugl:  
Zh8\B)0unn  
import org.rut.util.algorithm.SortUtil; `+w= p7ET  
lWRl  
/** k]ZE j/y~  
* @author treeroot ;1&"]N%  
* @since 2006-2-2 L2@:?WW[  
* @version 1.0 L&6^(Bn   
*/ b ri[&=  
public class MergeSort implements SortUtil.Sort{ i*$+>3Q-  
+3o vO$g  
/* (non-Javadoc) 2/3yW.C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1uw1(iL+  
*/ .=:f]fs  
public void sort(int[] data) { A;8kC}  
int[] temp=new int[data.length]; jU-LT8y:  
mergeSort(data,temp,0,data.length-1); +.Vh<:?  
} db 99S   
)j2 #5`?"j  
private void mergeSort(int[] data,int[] temp,int l,int r){ h; q&B9  
int mid=(l+r)/2; +pYgh8w@  
if(l==r) return ; w10~IP  
mergeSort(data,temp,l,mid); |47t+[b   
mergeSort(data,temp,mid+1,r); 7c\W&ZEmb-  
for(int i=l;i<=r;i++){ A.*e8a/6X  
temp=data; Rxdj}xy  
} WWSycH ?[  
int i1=l; tQ@7cjq8bA  
int i2=mid+1; e (]]  
for(int cur=l;cur<=r;cur++){ lL zR5445)  
if(i1==mid+1) < }K9 50  
data[cur]=temp[i2++]; ]s Euh~F  
else if(i2>r) |ru!C(  
data[cur]=temp[i1++]; r(S h  
else if(temp[i1] data[cur]=temp[i1++]; eFsl  
else T"99m^y  
data[cur]=temp[i2++]; Tu-lc)  
} @ 95p[  
} J4eU6W+{  
6r"NU`1A;r  
} QyCrz{/  
(+gTIcc >  
改进后的归并排序: NrS+N;i  
G+#bO5  
package org.rut.util.algorithm.support; tD`^qMua  
r )~?5d  
import org.rut.util.algorithm.SortUtil; XHv m{z=  
}h`z2%5o  
/** ;40Z/#FI  
* @author treeroot f\5w@nX  
* @since 2006-2-2 2<*"@Vj  
* @version 1.0 m?wQk:Y1  
*/ Q>Ct]JW&  
public class ImprovedMergeSort implements SortUtil.Sort { 9]N{8  
qJF'KHyU{l  
private static final int THRESHOLD = 10; wdj?T`4  
X.{xH D&_  
/* 2XL^A[?   
* (non-Javadoc) ^0"^  
* `IlhLv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uPl7u 1c  
*/ m> +  
public void sort(int[] data) { R@grY:h  
int[] temp=new int[data.length]; z~f;}`0  
mergeSort(data,temp,0,data.length-1); mNC?kp  
} @5&57R3>  
<Z t]V`-  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0#GnmH  
int i, j, k; b)a5LFt|  
int mid = (l + r) / 2; Q.9,W=<6  
if (l == r) L+ew/I>:  
return; q5Zu'-Cx@  
if ((mid - l) >= THRESHOLD) }WJX Q@  
mergeSort(data, temp, l, mid); T$mT;k  
else N @_y<7#C  
insertSort(data, l, mid - l + 1); &LI q?  
if ((r - mid) > THRESHOLD) n<|8Onw  
mergeSort(data, temp, mid + 1, r); gna!Q  
else q=e;P;u  
insertSort(data, mid + 1, r - mid); =P,mix|  
q2|x$5  
for (i = l; i <= mid; i++) { t ^>07#z  
temp = data; u gRyUny  
} >"UXY)  
for (j = 1; j <= r - mid; j++) { -N/n|{+F  
temp[r - j + 1] = data[j + mid]; DNj<:Pdd)  
} $'}|/D  
int a = temp[l]; zEQQ4)mA  
int b = temp[r]; xBc$qjV  
for (i = l, j = r, k = l; k <= r; k++) { 2.JrLBhN  
if (a < b) {  %o/@0.w  
data[k] = temp[i++]; O.#R r/+)  
a = temp; [Cd#<Te3  
} else { RPMz&/k  
data[k] = temp[j--]; Xgh%2 ;:  
b = temp[j]; .+Q1h61$T  
} D*46,>Tv  
} ~{g/  
} %;]/Z%!  
rc:UG "[  
/** zt]8F)l@  
* @param data 9'Z{uHi%  
* @param l !M}-N  
* @param i ?!F<xi:  
*/ Z 9cb  
private void insertSort(int[] data, int start, int len) {  W;yg{y   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )w}'kih  
} *kf%?T.  
} ZH=Bm^  
} zI"&g]TV5  
} (j:[<U  
P\[K)N/1  
堆排序: I|bX;l  
Gn6\n'r0  
package org.rut.util.algorithm.support; .@r{Tq,%q8  
H[g i`{c  
import org.rut.util.algorithm.SortUtil; EQ"_kJ>81Y  
rY &lx}  
/** 6_8yQ  
* @author treeroot N1E9w:T`  
* @since 2006-2-2 i< imE#  
* @version 1.0 /QlzWson  
*/ _Q\rZ l  
public class HeapSort implements SortUtil.Sort{ ZQR)k:k7  
A$~H`W<yxB  
/* (non-Javadoc) i+Ne.h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q}'<[Wg  
*/ @w%kOX  
public void sort(int[] data) { [vBP,_Tjx  
MaxHeap h=new MaxHeap(); tOF8v8Hd  
h.init(data); kSJ;kz,_  
for(int i=0;i h.remove(); ?TDmW8G}J  
System.arraycopy(h.queue,1,data,0,data.length); O d6'bO;G  
} taVK&ohWx  
U/HF6=Wot  
private static class MaxHeap{ jA@ uV,w  
$rjm MSxi  
void init(int[] data){ bQ?Vh@j(M  
this.queue=new int[data.length+1]; m-[xrVV  
for(int i=0;i queue[++size]=data; 6 P9#6mZ  
fixUp(size); [$>@f{:  
} ),o=~,v:  
} \/wk!mWV@  
BD.l5 ~:  
private int size=0; BB/c5?V  
LEg|R+ 6E  
private int[] queue; &RS)U72  
^}gZ+!kA  
public int get() { :1UOT'_  
return queue[1]; K^/.v<w  
} fP;I{AiN~  
>Ir?)h  
public void remove() { (t"|XSF  
SortUtil.swap(queue,1,size--); Vw.4;Zy(  
fixDown(1); t=fAG,k5  
} n68qxD-X  
file://fixdown O#^qd0e'P!  
private void fixDown(int k) { sV%=z}n=  
int j; frQ=BV5%6  
while ((j = k << 1) <= size) { EN>a^B+!  
if (j < size %26amp;%26amp; queue[j] j++; -G1R><8[  
if (queue[k]>queue[j]) file://不用交换 Uu`}| &@i  
break; ! }eq~3  
SortUtil.swap(queue,j,k); M.$=tuUL  
k = j; o9{1_7K  
} s }^W2  
} |c$*Fa"A  
private void fixUp(int k) { DM,;W`|6%  
while (k > 1) { ~2NT Xp  
int j = k >> 1; 8M['-  
if (queue[j]>queue[k]) !*wd d8   
break; :K \IS`  
SortUtil.swap(queue,j,k); \u/=?b  
k = j; N>j*{]OY+{  
} <qoPBm])  
} c!$~_?]  
Q."rE"}<  
} {v3@g[:|  
>^f]Lgp  
} wC<FF2T  
85H*Xm?d#  
SortUtil: zs-,Y@ZL  
cnDBT3$~Z  
package org.rut.util.algorithm; naY#`xig  
v`jFWq8I,  
import org.rut.util.algorithm.support.BubbleSort; WK SWOSJ  
import org.rut.util.algorithm.support.HeapSort; mL@7,GD  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4%>tk 8 [  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5B{Eg?  
import org.rut.util.algorithm.support.InsertSort; ,+5 !1>\  
import org.rut.util.algorithm.support.MergeSort; &4p~i Z  
import org.rut.util.algorithm.support.QuickSort; ?G5,x  
import org.rut.util.algorithm.support.SelectionSort; T< <N U"n  
import org.rut.util.algorithm.support.ShellSort; {mHxlG)  
2Aq+:ud)P  
/** !uKuO  
* @author treeroot =*WfS^O  
* @since 2006-2-2 <U /r U9O  
* @version 1.0 rqM_#[Y?  
*/ ${U H!n{  
public class SortUtil { k~1{|HxrE  
public final static int INSERT = 1; )B^T7{  
public final static int BUBBLE = 2; K!G/iz9SB  
public final static int SELECTION = 3; #/K71Y  
public final static int SHELL = 4; xAf?E%_pi  
public final static int QUICK = 5; %(1y  
public final static int IMPROVED_QUICK = 6; oFu( J  
public final static int MERGE = 7; ub{Yg5{3S\  
public final static int IMPROVED_MERGE = 8; _lOyT$DN  
public final static int HEAP = 9; T,4REbm^  
P9#}aw+  
public static void sort(int[] data) { < $rXQ  
sort(data, IMPROVED_QUICK); J\ ?  
} LC/%AbM  
private static String[] name={ C:}"?tri  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .18MMzdN  
}; 38RyUHL=  
Or()AzwE@  
private static Sort[] impl=new Sort[]{ kPp7;U2A  
new InsertSort(), 6)3pnhG9  
new BubbleSort(), |=Pw -uk  
new SelectionSort(), ^+dL7g?+  
new ShellSort(), eG5xJA^  
new QuickSort(), Oyjhc<6  
new ImprovedQuickSort(), eKqo6P:#f  
new MergeSort(), f:A1j\A?  
new ImprovedMergeSort(), 5bprhq-7  
new HeapSort() k?Iq 6  
}; 0~nub  
MJ@PAwv"  
public static String toString(int algorithm){ rge/qUr/^  
return name[algorithm-1]; :LR>U;2  
} SDW!9jm>R  
@(e/Y/  
public static void sort(int[] data, int algorithm) { J po(O>\P  
impl[algorithm-1].sort(data); b U>.Bp]  
} 4"%LgV`  
=&?BPhJE  
public static interface Sort { ~$ "P\iJ  
public void sort(int[] data); ~@VyJT%  
} Bjsg!^X7  
<#:ey^q<  
public static void swap(int[] data, int i, int j) { kCU (Hi`Q  
int temp = data; 8}!WJ2[R  
data = data[j]; |VML.u:N  
data[j] = temp; *Ag,/Cm]  
} m2PI^?|e  
} (%iCP/E3  
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