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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。 8=]Tr3   
插入排序: Nj?/J47?,  
WD1G&5XP  
package org.rut.util.algorithm.support; YfRkwKjy(  
9'r:~ O  
import org.rut.util.algorithm.SortUtil; y~75r\"R  
/** QcgfBsv96  
* @author treeroot H/Llj.-jg  
* @since 2006-2-2 %Qj;,#z  
* @version 1.0 4Z/f@ZD  
*/ Sv  &[f}S  
public class InsertSort implements SortUtil.Sort{ [o?* "c  
u?9" jX  
/* (non-Javadoc) 6C-z=s)P&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1bH;!J  
*/ lg(bDK m  
public void sort(int[] data) { CxfRV L`7  
int temp; ai{Sa U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &B|D;|7H  
} Z ,EvQ8i  
} f4BnX(1u  
} s&NX@  
kcQ'$<Mz<  
} $#]]K  
SCz(5[MZJ  
冒泡排序: Y*! qG  
0pbtH8~  
package org.rut.util.algorithm.support; ?.YOI.U^  
kV3 8`s>+  
import org.rut.util.algorithm.SortUtil; /IsS;0K%L  
I}t#%/'YA  
/** eQ&ZX3*}  
* @author treeroot k2AJXw  
* @since 2006-2-2 "U\4:k`:  
* @version 1.0 (`:O~>[N  
*/ qkC/\![@  
public class BubbleSort implements SortUtil.Sort{ L@gWzC~?Q  
PK"c4>q  
/* (non-Javadoc) 'z$Q rFW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !=N"vD*  
*/ >ss/D^YS  
public void sort(int[] data) { d$ ^ ,bL2p  
int temp; =dFv/F/RW  
for(int i=0;i for(int j=data.length-1;j>i;j--){ mL4]l(U  
if(data[j] SortUtil.swap(data,j,j-1); t1%_DPD%W  
} 3}/&w\$  
} CXC`sPY  
} ~I} &V T  
} ObiT-D?)g  
a|?4 )  
} qv@$ZLR  
%%4t~XC#  
选择排序: d`F&aC  
`+uhy ,  
package org.rut.util.algorithm.support; y>aZXa  
tuhA 9}E  
import org.rut.util.algorithm.SortUtil; -*XCxU'  
R[;z X(y  
/** 'CN|'W)g7  
* @author treeroot _-#'j2  
* @since 2006-2-2 (t4&,W_spA  
* @version 1.0 B|&"#Q  
*/ t8dm)s[r8  
public class SelectionSort implements SortUtil.Sort { ,j$Vvz   
QV&D l_  
/* 1[yq0^\]M[  
* (non-Javadoc) iURk=*Z=  
* V7Mh-]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OdB?_.+$  
*/ ?G -e](]^<  
public void sort(int[] data) { /, !B2  
int temp; />9O R  
for (int i = 0; i < data.length; i++) { -]t,E,(!  
int lowIndex = i; 48*Do}l]  
for (int j = data.length - 1; j > i; j--) { 4A2?Uhp y  
if (data[j] < data[lowIndex]) { !H}vu]R  
lowIndex = j; oD$J0{K6  
} .Fa4shNV  
} a$Cdhx !  
SortUtil.swap(data,i,lowIndex); !OuWPH. :  
} 7Ddaf>  
} f?'JAC*  
%,k] [V  
} I:d[Q s  
cwL1/DGDB  
Shell排序: }~Af/  
}sOwp}FV8X  
package org.rut.util.algorithm.support; =%> oR  
XQ~Ke-QW)  
import org.rut.util.algorithm.SortUtil; p f_mf.  
?A )hN8  
/** hc'-Dh  
* @author treeroot <E0UK^-}  
* @since 2006-2-2 f0BdXsV#g  
* @version 1.0 HVC >9_:]  
*/ mI>,.&eo  
public class ShellSort implements SortUtil.Sort{ $VxA0 =ad  
h@LHRMO  
/* (non-Javadoc) Ey4z.s'-l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xQp|;oW;z  
*/ W[^qa5W<FB  
public void sort(int[] data) { +fnK /%b  
for(int i=data.length/2;i>2;i/=2){ S*,rGCt'T  
for(int j=0;j insertSort(data,j,i); rrCNo^W1  
} X 51Yfr  
}  &CG*)bE  
insertSort(data,0,1); v= N!SaK{  
} {pHM},WJ  
Iy6$7~  
/** <!pvqNApg  
* @param data /mK?E5H'r1  
* @param j NZ3/5%We/  
* @param i Kk{<@v)  
*/ bk\yCt06y;  
private void insertSort(int[] data, int start, int inc) { (S v~2  
int temp; nM0[P6p  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Vo"RO$%ow*  
} IEcf  
} w$u3W*EoU^  
} 7H|$4;X^  
E=#0I]v[  
} 2^^=iU=!<|  
3dDX8M?  
快速排序: ? mhs$g>  
t2r?N}"P  
package org.rut.util.algorithm.support; H~E(JLcU  
q/4 [3h  
import org.rut.util.algorithm.SortUtil; \~5C7^_  
Y X_ gb/A  
/** J;prC  
* @author treeroot ;IpT} ,  
* @since 2006-2-2 eBJUv]o %  
* @version 1.0 :Pv*, qHE  
*/ 3ux0 Jr2yT  
public class QuickSort implements SortUtil.Sort{ T]?n)L,2  
&wB\ ~Ie-  
/* (non-Javadoc) qBT.x,$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p3}?fej&|  
*/ A?@@*$&  
public void sort(int[] data) { Ii:>xuF&  
quickSort(data,0,data.length-1); Vy|6E#U  
} q@jq0D)g  
private void quickSort(int[] data,int i,int j){ chEn|>~  
int pivotIndex=(i+j)/2; @e'5E^  
file://swap |qoKO:B4-[  
SortUtil.swap(data,pivotIndex,j); EFc-foN  
o'$jNciOW  
int k=partition(data,i-1,j,data[j]); {Ions~cO)  
SortUtil.swap(data,k,j); R9! Uo  
if((k-i)>1) quickSort(data,i,k-1); CV{r5Sye  
if((j-k)>1) quickSort(data,k+1,j); "C*B,D*}:  
dqX;#H}h  
} >G'SbQ8  
/** `~W-Xx  
* @param data r lKlpl  
* @param i H&yD*@  
* @param j Kb^>-[Yx  
* @return E.iSWAJ(w  
*/ +GAf O0  
private int partition(int[] data, int l, int r,int pivot) { J=dJs k   
do{ %xQ.7~  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C -?!S  
SortUtil.swap(data,l,r); /CIh2 ]#e  
} x[Wwq=~  
while(l SortUtil.swap(data,l,r); 0=="^t_  
return l; >g;kJe  
} . ]8E7  
Nlj^D m  
} 8#D:H/`'  
dCFlM&(i  
改进后的快速排序: k'PQ} ,Vb  
)=DGdI Et  
package org.rut.util.algorithm.support; nJbbzQ,e  
W<<9y  
import org.rut.util.algorithm.SortUtil; &k8vWXMGk%  
4&cL[Ny  
/** p)~lL  
* @author treeroot efY8M2  
* @since 2006-2-2 9V.u-^o&  
* @version 1.0 SI6B#u-i  
*/ ')N{wSM9Ft  
public class ImprovedQuickSort implements SortUtil.Sort { 4R8G&8b  
Eaqca{%/^  
private static int MAX_STACK_SIZE=4096; Gc$gJnQio  
private static int THRESHOLD=10; eVl'\aUd  
/* (non-Javadoc) =@)d5^<5F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i7LJ&g/)  
*/ n$:IVX"2b  
public void sort(int[] data) { %5*@l vy  
int[] stack=new int[MAX_STACK_SIZE]; TH&qX  
{>bW>RO)  
int top=-1;  >Ng)k]G  
int pivot; Y\=FLO9  
int pivotIndex,l,r; X o{`]  
}!i` 0p  
stack[++top]=0; :L 3&FA   
stack[++top]=data.length-1; dC1V-x10ju  
bOI3^T  
while(top>0){ HWm#t./  
int j=stack[top--]; x|KWyfOS  
int i=stack[top--]; |([R'Orm  
LG]3hz9^9  
pivotIndex=(i+j)/2; |7@O( $b  
pivot=data[pivotIndex]; |p00j|k   
?U7) XvQ  
SortUtil.swap(data,pivotIndex,j); k6Cn"2q <  
~l~Tk6EM  
file://partition 90xk$3(  
l=i-1; cubUq5  
r=j; _#_ E^!  
do{ nmjm<Bu  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eb|i 3.  
SortUtil.swap(data,l,r); 3CE[(   
} 1=2^90  
while(l SortUtil.swap(data,l,r); ~}DQT>7$  
SortUtil.swap(data,l,j); Pj?Dmk~   
0qFH s  
if((l-i)>THRESHOLD){ @InZ<AW>|  
stack[++top]=i; \.gEh1HW  
stack[++top]=l-1; :"o o>  
} )$Z(|M4  
if((j-l)>THRESHOLD){ nIfCF,6,  
stack[++top]=l+1; Wn|&cG9  
stack[++top]=j; N]YtLa,t  
} +2C?9:bH  
q|)Q9+6$+  
} #&,H"?"  
file://new InsertSort().sort(data);  8%RI7Mg  
insertSort(data); 4F MAz^  
} 6*@yE  
/** pe&UQ C^  
* @param data !8tS|C#2  
*/ 6yAA~;*5'  
private void insertSort(int[] data) { |vFj*XU  
int temp; [XlB<P=|>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T{vR,  
} nkeI60  
} r(2 R <A  
} 8X?>=tl  
;\%sEcpT  
} jQj,q{eA  
;2giZ\  
归并排序: rSV gWr8  
`xKFqx:e  
package org.rut.util.algorithm.support; m|svQ-/j  
~9$X3.+  
import org.rut.util.algorithm.SortUtil; 8Og3yFx[rt  
Ps R>V)L  
/** p D=w >"  
* @author treeroot "t(wG{RxY  
* @since 2006-2-2 =fyyqb 4  
* @version 1.0 F#+.>!  
*/ XT@Mzo49z\  
public class MergeSort implements SortUtil.Sort{ gmSQcN)  
*9gD*AnM,  
/* (non-Javadoc) EA{U!b]cU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~0-g%C?R  
*/ 'qv;sB.  
public void sort(int[] data) { ?n'O Fpd  
int[] temp=new int[data.length]; KhM.Tc  
mergeSort(data,temp,0,data.length-1); Q*O<@   
} PK rek  
K3p@$3hQ  
private void mergeSort(int[] data,int[] temp,int l,int r){ yi!`V.  
int mid=(l+r)/2; Q1tpCT  
if(l==r) return ; %c6E-4b  
mergeSort(data,temp,l,mid); 3#.\  
mergeSort(data,temp,mid+1,r); hRTMFgO  
for(int i=l;i<=r;i++){ 2Ji+{,?,  
temp=data; Yr&Ka:  
} &:#m&,tQ  
int i1=l; qSiWnN8D t  
int i2=mid+1; xX@FWAj  
for(int cur=l;cur<=r;cur++){ [>w%CY<Fd  
if(i1==mid+1) 7!2 HNg  
data[cur]=temp[i2++]; MC=G"m:_  
else if(i2>r) W8aU "_  
data[cur]=temp[i1++]; {0's~U+@  
else if(temp[i1] data[cur]=temp[i1++]; KAb(NZK  
else :%tuNJjj  
data[cur]=temp[i2++]; xFsmf<Vm  
} %cW;}Y[?P  
} d(L{!mm  
vD=%`G[m  
} ]h~o],:  
L0&S0HG   
改进后的归并排序: HcJE0-"  
yr4ou  
package org.rut.util.algorithm.support; YU\Gj S~>&  
|f NMs  
import org.rut.util.algorithm.SortUtil; Hq xK\m%,.  
C{Blqf3V0  
/** W(@>?$&  
* @author treeroot zk>h u<_  
* @since 2006-2-2 Q\#UWsN(T/  
* @version 1.0 v*P[W_.  
*/ 9e5gy  
public class ImprovedMergeSort implements SortUtil.Sort { vR]mSX3)?  
AMk~dzNt  
private static final int THRESHOLD = 10; %ejeyc  
yDtOpM8<{  
/* #AncOo  
* (non-Javadoc) 6An{3 "  
* K}2Npo FS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "T*I|  
*/ ?~)Ak`=  
public void sort(int[] data) { "=A|K~b  
int[] temp=new int[data.length]; sx-F8:Qa  
mergeSort(data,temp,0,data.length-1); c$#GM57V  
} %c1FwAC  
$Sb@zLi)  
private void mergeSort(int[] data, int[] temp, int l, int r) { k!13=Gh  
int i, j, k; j) 6G7T|  
int mid = (l + r) / 2; 7!- \L7<  
if (l == r) X')S;KW  
return; [.U^Wrd  
if ((mid - l) >= THRESHOLD) ;](h2Z`3s  
mergeSort(data, temp, l, mid); WF)s*$'uz;  
else  ^Fp=y,D  
insertSort(data, l, mid - l + 1); 0P9Wy!f7  
if ((r - mid) > THRESHOLD) ;o >WXw  
mergeSort(data, temp, mid + 1, r); CZfE |T~  
else l"L+e!B~  
insertSort(data, mid + 1, r - mid); #HDesen  
0UD"^zgY  
for (i = l; i <= mid; i++) { Dqr9Vv  
temp = data; .93S>U<_  
} oeGS  
for (j = 1; j <= r - mid; j++) { F '#^`G9  
temp[r - j + 1] = data[j + mid]; +:y&{K  
} 3k{c$x}  
int a = temp[l]; x3;jWg~'  
int b = temp[r]; =phiD&=  
for (i = l, j = r, k = l; k <= r; k++) { h60\ Y 8  
if (a < b) { ) MBS  
data[k] = temp[i++]; xSOoIsL[  
a = temp; J=P;W2L  
} else { TMY{OI8a  
data[k] = temp[j--]; Z~R dFC  
b = temp[j]; U IQ 6SvM  
} 1t%<5O;R  
} 6puVw-X  
} 1<ehV VP   
zf7rF}  
/** O,]_ tp  
* @param data um}N%5GAa  
* @param l qSR? ,G  
* @param i ^Yr|K  
*/ :o<N!*pT  
private void insertSort(int[] data, int start, int len) { R ^^ 1/%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); NlMQHma  
} 4[xA- \  
} X{s/``n  
} uegb;m  
} .f+9 A>  
aa!a&L|!  
堆排序: Es~DHX  
v0u\xX[H;  
package org.rut.util.algorithm.support; VlV)$z_  
4UazD_`'  
import org.rut.util.algorithm.SortUtil; F*X%N_n  
X -v~o/r7  
/** bWUS9WT  
* @author treeroot oX#9RW/ >I  
* @since 2006-2-2 u IF$u  
* @version 1.0 p/4S$ j#Tn  
*/ !rz)bd3$  
public class HeapSort implements SortUtil.Sort{ Kj=;>u  
Ef-a4Pi  
/* (non-Javadoc) $Llv p bl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =;g=GcVK  
*/ ?U$}Rsk{#  
public void sort(int[] data) { <gR`)YF7  
MaxHeap h=new MaxHeap(); a2[ 8wv1  
h.init(data); jJ*=Ghu-  
for(int i=0;i h.remove(); GU5W|bS  
System.arraycopy(h.queue,1,data,0,data.length); o;*]1  
} yIlV[_  
Sr-|,\/O  
private static class MaxHeap{ _>;&-e  
\N4d_ fPj  
void init(int[] data){ 0&f\7z  
this.queue=new int[data.length+1]; $}V7(wu 6@  
for(int i=0;i queue[++size]=data; CN-4-  
fixUp(size); 6/VNuQ_#  
} Cv0&prt  
} AmgWj/>  
Euqjxz  
private int size=0; "h QV9 [2\  
otoBb^Mz  
private int[] queue; t2Ip\>;9f  
ofVEao  
public int get() { R9bhC9NP  
return queue[1]; ]DGGcUk7  
} n#)PvV~  
]v<d0" 2  
public void remove() { O{Dm;@J-aM  
SortUtil.swap(queue,1,size--); a4Ls^  
fixDown(1); Ck:#1-t8{  
} Al=(sHc'  
file://fixdown 9/FG,9  
private void fixDown(int k) { Q%+ }  
int j; 5XI;<^n2  
while ((j = k << 1) <= size) { xGwTk  
if (j < size %26amp;%26amp; queue[j] j++; p1Y+  
if (queue[k]>queue[j]) file://不用交换 l t&$8jh  
break; fFjLp l  
SortUtil.swap(queue,j,k); P= &'wblm?  
k = j; !T)T_P[  
} F\zkyk 4  
} mJSK; @w<O  
private void fixUp(int k) { =DGn,i9  
while (k > 1) { B:B8"ODV  
int j = k >> 1; w9/nVu  
if (queue[j]>queue[k]) 0Z@ARMCe|m  
break; (s5<  
SortUtil.swap(queue,j,k); B>{|'z?%>  
k = j; bELIRM9  
} MV% :ES?  
} I93 ~8wQ  
y{@P 1{  
} q-A`/9  
dMey/A/VYt  
} ;r gH}r  
hTlnw[I  
SortUtil: R.91v4 J  
:= ]sq}IN  
package org.rut.util.algorithm; (y-x01H  
C}n[?R  
import org.rut.util.algorithm.support.BubbleSort; Oqd"0Qt-  
import org.rut.util.algorithm.support.HeapSort; *?EO n-  
import org.rut.util.algorithm.support.ImprovedMergeSort; }pbBo2  
import org.rut.util.algorithm.support.ImprovedQuickSort; /'R UA  
import org.rut.util.algorithm.support.InsertSort; R;0W+!fE  
import org.rut.util.algorithm.support.MergeSort; c1pq]mz|z  
import org.rut.util.algorithm.support.QuickSort; JR H f.?  
import org.rut.util.algorithm.support.SelectionSort; BM|-GErE  
import org.rut.util.algorithm.support.ShellSort; 3'?h;`v\Lo  
A2}Z *U(;  
/** *p""YEN  
* @author treeroot -}=@ *See#  
* @since 2006-2-2 73&]En  
* @version 1.0 IyrZez  
*/ *37LN  
public class SortUtil { +A]&AkTw  
public final static int INSERT = 1; 1zh$IYrd  
public final static int BUBBLE = 2; E}xz7u   
public final static int SELECTION = 3; H.jLGe>  
public final static int SHELL = 4; t}5'(9  
public final static int QUICK = 5; 3g?MEM~  
public final static int IMPROVED_QUICK = 6; H arFo  
public final static int MERGE = 7; p2pTs&}S  
public final static int IMPROVED_MERGE = 8; ^Nd|+}  
public final static int HEAP = 9; Sf+(1_^`t  
}9L 40)8  
public static void sort(int[] data) { a) I=U [  
sort(data, IMPROVED_QUICK); P@gu~!  
} pb=jvK  
private static String[] name={ g`%ED0aR  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" o8~f   
}; XV74F l  
e8~62O^  
private static Sort[] impl=new Sort[]{ {B'Gm]4  
new InsertSort(), ",MK'\E  
new BubbleSort(), IeR l6r%:  
new SelectionSort(), mp&Le YYn  
new ShellSort(), "i!2=A8k  
new QuickSort(), JxX jDYrU  
new ImprovedQuickSort(), 4 +da  
new MergeSort(), *b$z6.  
new ImprovedMergeSort(), _4~ng#M*  
new HeapSort() 5@w'_#!)  
}; q#mFN/.(+  
'0'"k2"vC  
public static String toString(int algorithm){ 1Y H4a|bc  
return name[algorithm-1]; gt2>nTJz.Z  
} ]ro1{wm!WU  
JL" 3#p}  
public static void sort(int[] data, int algorithm) { V\iIvBpWg  
impl[algorithm-1].sort(data); 5~`|)~FA  
} Ez7V>FNX  
~|aeKtCs(.  
public static interface Sort { '_TJ"lOZ  
public void sort(int[] data); NDs]}5#   
} J9b?}-O)  
FT|/ WZR  
public static void swap(int[] data, int i, int j) { ZaukMEq  
int temp = data; w*&n(zJF>  
data = data[j]; 42n@:5`{+  
data[j] = temp; N=O+X~  
} u7WTSL%  
} e5WdK  
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