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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。 3]l)uoNt/  
插入排序: Z1eT> 6|]r  
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package org.rut.util.algorithm.support; <Z]#vr q  
-B;#pTG  
import org.rut.util.algorithm.SortUtil; SLKpl LO  
/** Wd:pqhLh  
* @author treeroot umIGI  
* @since 2006-2-2 bZ\R0[0  
* @version 1.0 s0/O/G?  
*/ $D1ha CL  
public class InsertSort implements SortUtil.Sort{ itg_+%^R  
j(=w4Sd_W  
/* (non-Javadoc) E`.xu>Yyj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {V6&((E8  
*/ #7i*Diqf9  
public void sort(int[] data) { )i~AXBt}  
int temp; iApq!u,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fOV_ >]u  
} lI<jYd 0fZ  
} @@AL@.*  
} 6Ijt2c'A}  
t3@+idEb  
} ISGw}#}]?  
J!2Z9<q5  
冒泡排序: /eI|m9ke  
k7^hc th  
package org.rut.util.algorithm.support; *%Rmdyn  
zmo2uUEd  
import org.rut.util.algorithm.SortUtil; z&6_}{2,]  
8zp?WUb  
/** $*ff]>#  
* @author treeroot DZSS  
* @since 2006-2-2 :C:6bDQ  
* @version 1.0 !Y ,7%  
*/ AS7L  
public class BubbleSort implements SortUtil.Sort{ cUY-  
iFd !ED  
/* (non-Javadoc) eFG/!b<17  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3`bQ0-D;  
*/ ;P91'B~t  
public void sort(int[] data) { PVIOe}N  
int temp; ^%r6+ey  
for(int i=0;i for(int j=data.length-1;j>i;j--){ J$#T_4 )  
if(data[j] SortUtil.swap(data,j,j-1); 24 [KGp  
} YO$Ig:a#  
} 8!E.3'jb  
} IRN,=  
} @G4Z  
], lLD UZ\  
} C%z)D1-  
#`VAw ) eV  
选择排序: ;z'&$#pA  
'(.5!7?Qc  
package org.rut.util.algorithm.support; h.edb6  
TTXF r  
import org.rut.util.algorithm.SortUtil; $ VT)  
.C'\U[A{  
/** L/i'6(="  
* @author treeroot z@,pT"rb  
* @since 2006-2-2 1SExl U  
* @version 1.0 7kLu rv  
*/ #_DpiiS,.Q  
public class SelectionSort implements SortUtil.Sort { Nx 42k|8  
U#z"t&o=L  
/* 0t7N yKU  
* (non-Javadoc) c,a8#Og  
* o(hUC$vW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JP>EW&M  
*/ &qx/ZT  
public void sort(int[] data) { 9hzu!}~'I  
int temp; ~ P\4 N  
for (int i = 0; i < data.length; i++) { %Psg53N  
int lowIndex = i; ~su>RolaX  
for (int j = data.length - 1; j > i; j--) {  ?(9*@  
if (data[j] < data[lowIndex]) { =t,oj6P~  
lowIndex = j; hIV9.{J  
} LeCc`x,5  
} rS [4Pey  
SortUtil.swap(data,i,lowIndex); *j3 U+HV  
} Cog}a  
} p/{%%30ke  
In?rQiD9  
} 1S?~ c25=h  
*y4DK6OFe  
Shell排序: `y>m >j  
u`XRgtI{g?  
package org.rut.util.algorithm.support; 9K$ x2U  
V D#q\  
import org.rut.util.algorithm.SortUtil; sl$6Zv-l%0  
9C7Npf?~M  
/** R>bg3j  
* @author treeroot mnA_$W3~I  
* @since 2006-2-2 Bl+\|[yd  
* @version 1.0 uuM1_nD[  
*/ y3efie {J  
public class ShellSort implements SortUtil.Sort{ OLx;j+p  
}ILBX4c  
/* (non-Javadoc) *$9U/  d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WOO3z5 La  
*/ L(3&,!@  
public void sort(int[] data) { 6 wN*d 5  
for(int i=data.length/2;i>2;i/=2){ T6/P54S  
for(int j=0;j insertSort(data,j,i); n/v.U,f&l@  
} cxR.:LD}  
} .rBU"Rbo  
insertSort(data,0,1); KpGx<+0p  
} ;-3&yQ7N)  
Qb {[xmc  
/** G8}owszT  
* @param data - +a,Ej  
* @param j Zq 4%O7%  
* @param i AWcbbj6Nd  
*/ lf-.c$.>  
private void insertSort(int[] data, int start, int inc) { 6.]~7n  
int temp; H'i\N?VL  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); H^'%$F?Ss  
} G ]h  
} Ry +?#P+  
} 2D:/.9= 8v  
_OGv2r  
} qlM<X?  
o}=*E  
快速排序: P].Eb7I  
>~ *wPoW  
package org.rut.util.algorithm.support; ,|*Gr"Q=  
"EpH02{i  
import org.rut.util.algorithm.SortUtil; ,x\qYz+7|  
%vO(.A+  
/** * K$ U[$s  
* @author treeroot *-ys}sX  
* @since 2006-2-2 T @^ S:K  
* @version 1.0 Gd|kAC g  
*/ S0StC$$1  
public class QuickSort implements SortUtil.Sort{ .$s']' =  
a=W%x{  
/* (non-Javadoc) vVMoCG"f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a( ~X  
*/ -\p&18K#  
public void sort(int[] data) { K Zg NL|  
quickSort(data,0,data.length-1); O)W+rmToI  
} t<dFH}U`w  
private void quickSort(int[] data,int i,int j){ XZN@hXc9:v  
int pivotIndex=(i+j)/2; T 9`AL  
file://swap jW7ffb `O  
SortUtil.swap(data,pivotIndex,j); ; o'>`=Y  
K bQXH!J  
int k=partition(data,i-1,j,data[j]); xq.kH|bH  
SortUtil.swap(data,k,j); 5`3 x(=b  
if((k-i)>1) quickSort(data,i,k-1); r?u4[ Oe#  
if((j-k)>1) quickSort(data,k+1,j); ;i.MDW^N  
tQG'f*4  
} GH':Yk  
/** 5=*i!c _m  
* @param data <#8}![3Q  
* @param i <}RD]Sc$1  
* @param j HY_>sD  
* @return CF3x\6.q}  
*/ R<f F ^^  
private int partition(int[] data, int l, int r,int pivot) { q~#>MB}".  
do{ -uN{28;@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6|lsG6uf  
SortUtil.swap(data,l,r); 8g:VfzaHu  
} 13 h,V]ak  
while(l SortUtil.swap(data,l,r); 8+Tv@  
return l; %AJ9fs4/  
} V5-!w0{  
%h(%M'm?  
} MtwlZg`c3  
:@5{*o  
改进后的快速排序: =^p}JhQ  
9BP'[SM%),  
package org.rut.util.algorithm.support; gJp6ReZ#  
O`Qke Z}  
import org.rut.util.algorithm.SortUtil; CH(Y.Kj-  
M]X!D7  
/** D?%[du:V  
* @author treeroot B#hvw'}  
* @since 2006-2-2 ?f9M59(l  
* @version 1.0 Ge({sy>X  
*/ &0f/F:M  
public class ImprovedQuickSort implements SortUtil.Sort { &u^]YE{  
x~uDCbL  
private static int MAX_STACK_SIZE=4096; 3=U#v<  
private static int THRESHOLD=10; >o13?-S%e  
/* (non-Javadoc) ELV~ ayp5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G11KAq(  
*/ a~@f,bw  
public void sort(int[] data) { w:nH_x#C4  
int[] stack=new int[MAX_STACK_SIZE]; U]+IP;YS  
L8n?F#q  
int top=-1; @r[SqGa:  
int pivot; mW{uChHP  
int pivotIndex,l,r; l?IeZisX  
>Q<XyAH~  
stack[++top]=0; Q }^Ip7T  
stack[++top]=data.length-1; EdqB4-#7  
_t"[p_llo  
while(top>0){ fe<7D\Sp@  
int j=stack[top--]; Y=|20Y\K  
int i=stack[top--]; 2%fzRXhu%  
~tTn7[!  
pivotIndex=(i+j)/2; s>G]U)d<'  
pivot=data[pivotIndex]; W;T0_=  
D^h! ].3 T  
SortUtil.swap(data,pivotIndex,j); F0&ubspt\  
WJ-.?   
file://partition AvZ5?rN$  
l=i-1; Zgp9Uu}"  
r=j; a_/4^+  
do{ .7 )oWd!  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SIm1fC  
SortUtil.swap(data,l,r); qZ E3T:S  
} F (kq  
while(l SortUtil.swap(data,l,r); F{QOu0$cA4  
SortUtil.swap(data,l,j); "0nsYE  
AH/^v;-  
if((l-i)>THRESHOLD){ GK-P6d  
stack[++top]=i; hC8WRxEGq  
stack[++top]=l-1; 8a@k6OZ  
} u4T$  
if((j-l)>THRESHOLD){ q9_AL8_  
stack[++top]=l+1; y5=,q]Qjk[  
stack[++top]=j; 6/3E!8  
} &+(D< U  
%{IgY{X  
} # "c'eG0  
file://new InsertSort().sort(data); rZ+4kf6S   
insertSort(data); e(0 cz6  
} x&J\swN9  
/** KwMt@1Z  
* @param data Fhllqh)  
*/ y@$E5sz  
private void insertSort(int[] data) { l=" X|t   
int temp; dHiir&Rd9`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4x-,l1NMR  
} K%L6UQ;  
} ^S;{;c+'  
} S'$m3,l(k  
]!!?gnPd5  
} 4Zu1G#(zP  
@i(9k  
归并排序: 451.VI}MR  
68bvbig  
package org.rut.util.algorithm.support; ny+r>>3Td  
mzM95yQ^Z  
import org.rut.util.algorithm.SortUtil; kl~/tbf  
yU/?4/G!  
/** 9 4H')(  
* @author treeroot t\QLj&h}E  
* @since 2006-2-2 $X-PjQb1Bb  
* @version 1.0 &R.5t/x_  
*/ <Qv/# k  
public class MergeSort implements SortUtil.Sort{ \reVA$M [  
tb oQn~&4  
/* (non-Javadoc) '{~[e**  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IEm~^D#<=  
*/ (||qFu9a  
public void sort(int[] data) { 'ParMT  
int[] temp=new int[data.length]; Q_fgpjEh/t  
mergeSort(data,temp,0,data.length-1); 6Hb a@Q1`  
} _2`b$/)-  
-Wmb M]Z  
private void mergeSort(int[] data,int[] temp,int l,int r){ T ?[;ej:  
int mid=(l+r)/2; vOCaru?~h  
if(l==r) return ; S]%,g%6i  
mergeSort(data,temp,l,mid); Bca$%3M  
mergeSort(data,temp,mid+1,r); @}R y7H0O  
for(int i=l;i<=r;i++){  ? .SiT5  
temp=data; ]D5Maid+  
} Md>C!c  
int i1=l; yc9!JJMkH  
int i2=mid+1; >Ho=L)u  
for(int cur=l;cur<=r;cur++){ RuVk>(?WK%  
if(i1==mid+1) Bi;a~qE  
data[cur]=temp[i2++]; }OnU32P  
else if(i2>r) `_GCS,/t  
data[cur]=temp[i1++]; 03|nP$g  
else if(temp[i1] data[cur]=temp[i1++]; mT@Gf>}/A  
else !D{z. KO  
data[cur]=temp[i2++]; }m?Ut|  
} =ZU!i0 K  
} iJ*Wsp  
a]P%Y.? r  
} <4;, y*"n  
DC> R  
改进后的归并排序: RJ0,7 E<B  
Yz[Rl ^  
package org.rut.util.algorithm.support; 60%fva  
i83Jy w,f  
import org.rut.util.algorithm.SortUtil; N lm}'Xt  
H'k~;  
/** Jpp-3i.F#  
* @author treeroot '>1M~B  
* @since 2006-2-2 D2D+S  
* @version 1.0 MD1X1,fk  
*/ K\B!tk  
public class ImprovedMergeSort implements SortUtil.Sort { &@|? %  
paN=I=:*M  
private static final int THRESHOLD = 10; &-^*D%9  
euT=]j  
/* ?(B}w*G~  
* (non-Javadoc) 7z,  $  
* OA9 P"*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $U7/w?gc'  
*/ sVP\EF8PY  
public void sort(int[] data) { Kc^ctAk7;  
int[] temp=new int[data.length]; P%yL{  
mergeSort(data,temp,0,data.length-1);  Jn|<G  
} ^9hc`.5N&?  
u:(=gj,~x  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?RG;q  
int i, j, k; H@zv-{}T8  
int mid = (l + r) / 2; jZidT9[g  
if (l == r) U)-aecB!  
return; avG#0AY  
if ((mid - l) >= THRESHOLD) \,p?pL<'  
mergeSort(data, temp, l, mid); )q4nyT>M  
else >a2[P"   
insertSort(data, l, mid - l + 1); ,*lns.|n  
if ((r - mid) > THRESHOLD) U{l f$  
mergeSort(data, temp, mid + 1, r); `aX+Gz?  
else DtGkhq;  
insertSort(data, mid + 1, r - mid); W2$rC5|  
7g{JE^u  
for (i = l; i <= mid; i++) { o8E<_rei  
temp = data; hB\BFVUSn/  
} RDQ]_wsyKG  
for (j = 1; j <= r - mid; j++) { im:[ViR {  
temp[r - j + 1] = data[j + mid]; f`>\bdz  
} tQ'R(H`  
int a = temp[l]; @pv:uON\  
int b = temp[r]; ?Y\WSI?i  
for (i = l, j = r, k = l; k <= r; k++) { g9g ] X  
if (a < b) { .uX(-8n ~  
data[k] = temp[i++]; ~v/` `s  
a = temp; (kK8 OxfF  
} else { *Z.{1  
data[k] = temp[j--]; f]Aa$\@b  
b = temp[j]; (qc <'$o  
} oliVaavj  
} 13 JG[,w  
} ;2fzA<RkK  
K]>4*)A:  
/** {nA+-=T  
* @param data ~KGE(o4p  
* @param l |yOIC,5[JW  
* @param i :|I"Em3R  
*/ *Y53b Z  
private void insertSort(int[] data, int start, int len) { 3~WI3ZIR  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K|~ !oQ  
} q(s0dkrj  
} &2@Rc?!6_P  
} !m_y@~pV#u  
} ~^Ga?Q_  
>c:nr&yP  
堆排序: HH(2  
],R\oMYy|P  
package org.rut.util.algorithm.support; -2U|G  
1T~`$zS7  
import org.rut.util.algorithm.SortUtil;  d*([!!i  
BUh(pS:  
/** 1,Pg^Xu  
* @author treeroot g;o5m}  
* @since 2006-2-2 TK> ~)hc}  
* @version 1.0 cqZ lpm$c  
*/ =-P<v2|e  
public class HeapSort implements SortUtil.Sort{ ~$ ?85   
<Z~Nz>'r  
/* (non-Javadoc) | z}VP-L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .bh 7  
*/ 2Z^p)  
public void sort(int[] data) { Gh{9nM_\"  
MaxHeap h=new MaxHeap(); @1pfH\m  
h.init(data); KV{  
for(int i=0;i h.remove(); \!>qtFT  
System.arraycopy(h.queue,1,data,0,data.length); ZL!5dT&@W  
} Ix=(f0|  
!]7L9TGn  
private static class MaxHeap{ ky]L`w  
]wbV1Y"  
void init(int[] data){ 3<a|_(K  
this.queue=new int[data.length+1]; _a?x)3\v  
for(int i=0;i queue[++size]=data; G}WY0FC6  
fixUp(size); 6(A"5B=\  
} m5?t<H~  
} 1Sns$t%b  
q8e]{sT'!  
private int size=0; h: z$uG  
ESS1 L$y  
private int[] queue; +H? XqSC  
uAk>VPuuZ  
public int get() { ?6MUyH]a  
return queue[1]; 1F2(MKOo!  
} H}usL)0&&  
,MLAW  
public void remove() { +rrA>~  
SortUtil.swap(queue,1,size--); {FN4BC`3+  
fixDown(1); G)3r[C^[k  
} ?FZ) LZM  
file://fixdown mI^S% HT  
private void fixDown(int k) { e]:(.Wb- 9  
int j; uD4W@*PYr  
while ((j = k << 1) <= size) { eM7 F8j  
if (j < size %26amp;%26amp; queue[j] j++; -7I %^u  
if (queue[k]>queue[j]) file://不用交换 J]NMqi q  
break; bSTTr<W  
SortUtil.swap(queue,j,k); z=rSb4"W  
k = j; 3?&P^{  
} %~Wr/TOt+  
} lj *=bK  
private void fixUp(int k) { [RDY(}P%  
while (k > 1) { V )oKsO  
int j = k >> 1; '?mky,:HT  
if (queue[j]>queue[k]) @_#]7  
break; qs (L2'7/  
SortUtil.swap(queue,j,k); u@4khN: ^p  
k = j; 8feLhWg'P  
} \ tU[,3  
} E,A9+OKxJ  
urD{'FQf  
} +5Y;JL<%/  
>+[{m<Eq  
} Hv =7+O$  
/XuOv(j  
SortUtil: j  W -K  
clT[ ?8*  
package org.rut.util.algorithm; HNX/#?3  
[hiV #  
import org.rut.util.algorithm.support.BubbleSort; - l0X]&Ex  
import org.rut.util.algorithm.support.HeapSort; lp1GK/!s  
import org.rut.util.algorithm.support.ImprovedMergeSort; wr6(C:  
import org.rut.util.algorithm.support.ImprovedQuickSort; #<w2xR]:  
import org.rut.util.algorithm.support.InsertSort; dhr-tw  
import org.rut.util.algorithm.support.MergeSort; llpgi,-=  
import org.rut.util.algorithm.support.QuickSort; 4_ZHY?VRd  
import org.rut.util.algorithm.support.SelectionSort; T'14OU2N{Y  
import org.rut.util.algorithm.support.ShellSort; (6)X Fp&  
"(;t`,F  
/** ;Z&w"oSJ  
* @author treeroot j|r$ ! gV  
* @since 2006-2-2 '81WogH:  
* @version 1.0 _E^ !, Wz  
*/ n*eqM2L  
public class SortUtil { x{ VUl  
public final static int INSERT = 1; %cq8%RT  
public final static int BUBBLE = 2; 5pxw[c53#  
public final static int SELECTION = 3; RWGAxq`9f  
public final static int SHELL = 4; 2&<&q J  
public final static int QUICK = 5; 6?l|MU"Q.  
public final static int IMPROVED_QUICK = 6; ~:UAL}b{\~  
public final static int MERGE = 7; Rap_1o9#\  
public final static int IMPROVED_MERGE = 8; <'P+2(Oi  
public final static int HEAP = 9; Ke\FzZ]  
HhUk9 >7  
public static void sort(int[] data) { ^F+7@*u  
sort(data, IMPROVED_QUICK); Qy'-3GB  
} 0&6(y* #Z  
private static String[] name={ 3hR3)(+1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 04!akPP<  
}; +tv"j;z  
SiT5QJe  
private static Sort[] impl=new Sort[]{ ].x`Fq3  
new InsertSort(), q{Gf@  
new BubbleSort(), IOH6h=  
new SelectionSort(), /| [%~`?BM  
new ShellSort(), tfd!;`B  
new QuickSort(), %T~LK=m  
new ImprovedQuickSort(), ,@@FAL  
new MergeSort(), %uy?@e  
new ImprovedMergeSort(), fSm|anuKZe  
new HeapSort() X0]5I0YP  
}; v ,)vW5jGI  
yxy~N\ 0  
public static String toString(int algorithm){ .$r7q[  
return name[algorithm-1]; {&)E$ M  
} {9h`h08?z  
RV6|sN[x>  
public static void sort(int[] data, int algorithm) { @?[}\9dW  
impl[algorithm-1].sort(data); |\h<!xR  
} }H9V$~}@-  
-Rr Qv(  
public static interface Sort { M_#^zo "x  
public void sort(int[] data); S(5&%}QFQ  
} 5[rA>g~  
qa/VSk!{  
public static void swap(int[] data, int i, int j) { *>7Zc  
int temp = data; #}nDX4jI  
data = data[j]; @D=i|f  
data[j] = temp; Ug^vVc)  
} bqm%@*fZo  
} J]$]zD  
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