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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。 Q.8^F  
插入排序: us8ce+  
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package org.rut.util.algorithm.support; N1n\tA?  
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import org.rut.util.algorithm.SortUtil; f~jd N~  
/** 9)b{U2&  
* @author treeroot e \kR/<L  
* @since 2006-2-2 F')E)tV  
* @version 1.0 T sJ71  
*/ sdewz(xskj  
public class InsertSort implements SortUtil.Sort{ &$qIJvMiK  
FNl^ lj`Y  
/* (non-Javadoc) HW6Cz>WxOW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z;0]T=g  
*/ Np~qtR  
public void sort(int[] data) { SN QLEe  
int temp; s, #$o3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aO<H!hK  
} #TP Y%  
} p7*7V.>X  
} 6|Rj YX  
@:9mTP7  
} Oo\~' I  
uMC0XE|S  
冒泡排序: 6~k qU4lL  
B)-P# ,}  
package org.rut.util.algorithm.support; hn/SS  
zWdz9;=_  
import org.rut.util.algorithm.SortUtil; OL&VisJ{75  
~1{~iB2G  
/** Rn whkb&&  
* @author treeroot W?@+LQa??  
* @since 2006-2-2 /z(s1G.  
* @version 1.0 %__.-;)o  
*/ l)0yv2[h  
public class BubbleSort implements SortUtil.Sort{ ]<O -  
o\y qf:V8  
/* (non-Javadoc) )4/UzR$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }% ?WS  
*/ A'? W5~F  
public void sort(int[] data) { *;(GL  
int temp; <gr2k8m6$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ h1?.x  
if(data[j] SortUtil.swap(data,j,j-1);  M Xl!  
} ~leLQsZ  
} ),I7+rY  
} T b]'  b  
} o&:n>:im  
qv+}|+aL:  
} #9hSo  
AqP\g k  
选择排序: QmB,~x{j>  
27jZ~Bp$  
package org.rut.util.algorithm.support; 12%4>2}~>  
1HNX 6  
import org.rut.util.algorithm.SortUtil; jLf87  
7wc{.~+  
/** ?{6[6T  
* @author treeroot @-qC".CI  
* @since 2006-2-2 =R\-mov$  
* @version 1.0 Z})n%l8J]p  
*/ [Z?vC  
public class SelectionSort implements SortUtil.Sort { *C?x\.\C  
Pi|oO-M  
/* Ti9cN)lq&  
* (non-Javadoc) pNzGpCk  
* zoBjrAyD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TS<uBX  
*/ V/-~L]G  
public void sort(int[] data) { YPq`su7m9  
int temp; S$I:rbc  
for (int i = 0; i < data.length; i++) { H}c, P('  
int lowIndex = i; Jid:$T>  
for (int j = data.length - 1; j > i; j--) { 6.'+y1yS)  
if (data[j] < data[lowIndex]) { {*C LWs4  
lowIndex = j; p{Gg,.f!HM  
} MXhRnVz"W  
} 62LQUl]<  
SortUtil.swap(data,i,lowIndex); [%8+Fa~Wa  
} [}_ar  
} {#y HL  
.tb~f@xL  
} VU*{E  
ptuW}"F  
Shell排序: :+,qvu!M7  
P5P<-T{-c  
package org.rut.util.algorithm.support; t(MlZ>H  
*lG$B@;rc|  
import org.rut.util.algorithm.SortUtil; k\}qCDs  
 U\~[  
/** hK$-R1O  
* @author treeroot )V}u1C-N  
* @since 2006-2-2 \ca4X{x  
* @version 1.0 [P{Xg:0  
*/ 3r{'@Y =)Y  
public class ShellSort implements SortUtil.Sort{ ()>\D  
{_/6,22j(V  
/* (non-Javadoc) aV(*BE/@F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sEvJ!$Tt?I  
*/ /HDX[R   
public void sort(int[] data) { ^j=_=Km]  
for(int i=data.length/2;i>2;i/=2){ ]3QQ"HLcp  
for(int j=0;j insertSort(data,j,i); 95wV+ q*  
} Krq^|DY  
} j`'=K_+nU  
insertSort(data,0,1); nw5#/5xw  
} {YbqB6zaM  
+-~;?wA  
/** n(f&uV_):  
* @param data f3l >26  
* @param j C.(ZXU7  
* @param i 6U+#ADo  
*/ Z gU;=.  
private void insertSort(int[] data, int start, int inc) { ?I/,r2ODLh  
int temp; Cm ;N5i  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U.6hLFcE  
} \K?./*  
} H_8@J  
} Z21XlbK   
7\/O"Ot  
} |_=jXf\TL  
@xkM|N?  
快速排序: X}usyO'pW  
b]g.>$[nX  
package org.rut.util.algorithm.support; "?9fL#8f*!  
@g=A\2  
import org.rut.util.algorithm.SortUtil; CWN=6(y  
\iE'E  
/** #i ]@"R  
* @author treeroot =0]Mc$Ih  
* @since 2006-2-2 X"1<G3m4  
* @version 1.0 '3 /4?wi  
*/ a*lh)l<KV  
public class QuickSort implements SortUtil.Sort{ 46_xyz3+  
le|~BG hL  
/* (non-Javadoc) }~e8e   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h7G"G"  
*/ #A1%gIw<v2  
public void sort(int[] data) { +%yfcyZ.  
quickSort(data,0,data.length-1); ^oBtfN>4  
} nLbFg0?+t  
private void quickSort(int[] data,int i,int j){  VA6}  
int pivotIndex=(i+j)/2; X5zDpi|Dq  
file://swap Gw/Pk4R  
SortUtil.swap(data,pivotIndex,j); sBj(Qd  
i1ixi\P{0  
int k=partition(data,i-1,j,data[j]); 'f!8DGix  
SortUtil.swap(data,k,j); V#2+"(7h  
if((k-i)>1) quickSort(data,i,k-1); 7Wf/$vRab  
if((j-k)>1) quickSort(data,k+1,j); aL+ o /  
% L$bf#  
} u^@f&BIG]:  
/** \=VtHu92=  
* @param data 1gL2ia  
* @param i S'Q@ScJ  
* @param j Vz~{UHH6  
* @return R1adWBD>  
*/ UdT *E: 6  
private int partition(int[] data, int l, int r,int pivot) { }|0^EWL  
do{ &47i"%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); k^3>Y%^1  
SortUtil.swap(data,l,r); %". HaI]  
} !,wIQy_e4  
while(l SortUtil.swap(data,l,r); ?A K(|  
return l; fx41,0;gZq  
} u@Ih GME  
y`Wty@  
} -]0OKE&  
Ec!"O3%!M^  
改进后的快速排序: "@e3EX7h  
R/~p>apg8  
package org.rut.util.algorithm.support; C)um9}  
0.`/X66;V  
import org.rut.util.algorithm.SortUtil; 5Yg'BkEr  
B~1 _28\  
/** :}He\V  
* @author treeroot D$w6V  
* @since 2006-2-2 xT3BHnQ(  
* @version 1.0 VQc_|z_ s  
*/ 29;?I3< *  
public class ImprovedQuickSort implements SortUtil.Sort { =6j&4p `  
lUOF4U&r  
private static int MAX_STACK_SIZE=4096; |U:k,YH  
private static int THRESHOLD=10; qk%;on&`  
/* (non-Javadoc) kYzIp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) td(li.,  
*/ zIqU,n|]s  
public void sort(int[] data) { A=$04<nP8!  
int[] stack=new int[MAX_STACK_SIZE]; Y@;CF  
cq,SP&T~  
int top=-1; }5ret  
int pivot; 9 &$y}Y  
int pivotIndex,l,r; tIWmp30S  
@CpfP;*{w`  
stack[++top]=0; !O\82d1P  
stack[++top]=data.length-1; J4k=A7^N  
DBo%fYst  
while(top>0){ 1$xNUsD2  
int j=stack[top--]; >@U*~Nz  
int i=stack[top--]; eQ$Y0qH1E  
W\>fh&!)  
pivotIndex=(i+j)/2; k9<;woOBO  
pivot=data[pivotIndex]; t;|@o\  
_'#n6^Us<  
SortUtil.swap(data,pivotIndex,j); S(k3 `;K  
%vn|k[n D  
file://partition NpE*fR')  
l=i-1; %41m~Wh2  
r=j; 4)S,3G  
do{ "H=6j)Cb  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E~DQ-z  
SortUtil.swap(data,l,r); S.mG?zbw  
} 4R#chQ  
while(l SortUtil.swap(data,l,r); x,'(5*  
SortUtil.swap(data,l,j); TtJH7  
(9tX5$e6N  
if((l-i)>THRESHOLD){ h&M{]E9=  
stack[++top]=i; +G$4pt|=  
stack[++top]=l-1; l3{-z4mw  
} |T<_5Ik  
if((j-l)>THRESHOLD){ Q{O+  
stack[++top]=l+1; OyStqi  
stack[++top]=j; 0%32=k7O[  
} lXx=But  
]MqMQLG0t  
} 2A']y D  
file://new InsertSort().sort(data); /Y/UM3/  
insertSort(data); C>ICu*PW  
} ,L|%"K]yM  
/** eln)BW#  
* @param data ]l;o}+`G  
*/ DRSr%d  
private void insertSort(int[] data) { tl[Uw[  
int temp; n"h `5p5'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N&.H|5  
} nyX2|m&  
} cF\;_0u  
} >>QY'1Eu  
jkQ*D(;p  
} *zaQx+L  
0B[="rTS7#  
归并排序: ~jWn4 \  
*Hg>[@dP0  
package org.rut.util.algorithm.support; S:u:z=:r  
=R^%(Py  
import org.rut.util.algorithm.SortUtil; zZ:>do\2  
*-#&K\  
/** SDC4L <!  
* @author treeroot , xw#NG6  
* @since 2006-2-2 d|jNf</`  
* @version 1.0 ru'F6?d  
*/ FW;m\vu  
public class MergeSort implements SortUtil.Sort{ )n1_(;  
9,c(y sv"  
/* (non-Javadoc) S\^P ha q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i9rN9Mq?O  
*/ ]q\b,)4 e  
public void sort(int[] data) { ?#Ge.D~u  
int[] temp=new int[data.length]; ?)/#+[xa  
mergeSort(data,temp,0,data.length-1);  hz{`h  
} K> %Tq  
Y`KqEjsC*  
private void mergeSort(int[] data,int[] temp,int l,int r){ s'3 s^Dd  
int mid=(l+r)/2; MO[2~`,Q!  
if(l==r) return ; Ih@61>X.o*  
mergeSort(data,temp,l,mid); .4S.>~^7  
mergeSort(data,temp,mid+1,r); JX<)EZ!F  
for(int i=l;i<=r;i++){ 1}"++Z73P  
temp=data; E!;SL|lj.  
} md+nj{Ib  
int i1=l; 2L!u1  
int i2=mid+1; /9 3M*b  
for(int cur=l;cur<=r;cur++){ n*o-Lo+Fe.  
if(i1==mid+1) L]yS[UN$  
data[cur]=temp[i2++]; 9q)Kfz  
else if(i2>r) GeI-\F7b  
data[cur]=temp[i1++]; ]{!U@b  
else if(temp[i1] data[cur]=temp[i1++]; {M3qLf~z#C  
else y~(h>gi,x  
data[cur]=temp[i2++]; e4-@ f%5  
} U1Q:= yD  
} GXcJ< v  
\1d (9jR  
} oL-]3TY~  
Q[Z8ok  
改进后的归并排序: % BVs47g  
oVnvO iAc  
package org.rut.util.algorithm.support; 4Xgg%@C  
0Vj4+2?L5;  
import org.rut.util.algorithm.SortUtil; 90Pl$#cb2  
!1rlN8w(qr  
/** f0A{W/0n  
* @author treeroot R$v[!A+:'  
* @since 2006-2-2 Q}`0W[a ~  
* @version 1.0 dW_KU}  
*/ dW)B1iUo!  
public class ImprovedMergeSort implements SortUtil.Sort { <qtr   
4hO!\5-w:  
private static final int THRESHOLD = 10; z-BXd  
6wPaJbRtaM  
/* m];]7uB5=  
* (non-Javadoc) kh!FR u h  
* {mm)ay|M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Az9?Ra;U  
*/ ?e` ^P   
public void sort(int[] data) { VX].3=T8  
int[] temp=new int[data.length]; 8H;t_B  
mergeSort(data,temp,0,data.length-1); ? 8)'oMD  
} v;BV@E0}x  
B+Rm>^CBm  
private void mergeSort(int[] data, int[] temp, int l, int r) { t;\kR4P  
int i, j, k; ) dn(G@5  
int mid = (l + r) / 2; H6kR)~zhf  
if (l == r) <x@}01 ~  
return; E08 klC0  
if ((mid - l) >= THRESHOLD) pyH:#5  
mergeSort(data, temp, l, mid); wZG\>9~  
else X]'{(?Ch  
insertSort(data, l, mid - l + 1); IW>T}@ |  
if ((r - mid) > THRESHOLD) "&%I)e^  
mergeSort(data, temp, mid + 1, r); 83E7k]7]  
else cU RkP`  
insertSort(data, mid + 1, r - mid); :X0k]p  
]@dZ{H|  
for (i = l; i <= mid; i++) { 0f~C#/[t7  
temp = data; %9w::hav  
} F{Z~ R  
for (j = 1; j <= r - mid; j++) { : imW\@u  
temp[r - j + 1] = data[j + mid]; x%}^hiO<q  
} 48c1gUw oP  
int a = temp[l]; 4F)-"ck  
int b = temp[r]; `lQ3C{}  
for (i = l, j = r, k = l; k <= r; k++) { >,TUZ  
if (a < b) { t,,k  
data[k] = temp[i++]; 3XL#0\im?s  
a = temp; Z LB4m`  
} else { 4P'*umJi  
data[k] = temp[j--]; O9vQp  
b = temp[j]; ZU85P0  
} ?!;7:VIE  
} S)lkz'tdk  
} ?a8^1:  
9zZr^{lUl  
/** !HrKXy 0{  
* @param data JF # # [O  
* @param l Yb +yw_5  
* @param i |L-]fjBbF  
*/ ?h.wK  
private void insertSort(int[] data, int start, int len) { o4j[p3$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g>Y|9Y  
} *#E F sUw  
} /~}}"zx&  
} L_vISy%\b  
} Z8zmHc"IH  
O]lSWEe  
堆排序: &Nj3h(Ll  
DKne'3pH  
package org.rut.util.algorithm.support; }3o|EXx=  
pi /g H  
import org.rut.util.algorithm.SortUtil; 0TCBQ~"  
b@rVo;  
/** vtw6FX_B  
* @author treeroot mFg<dTx0c8  
* @since 2006-2-2 87Oad@FOr  
* @version 1.0 21 O'M  
*/ BbW^Wxd3  
public class HeapSort implements SortUtil.Sort{ 4xk|F'6K  
Ey_" ~OB  
/* (non-Javadoc) iTFdN}U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %70~M_  
*/ eCN })An  
public void sort(int[] data) { Y]NSN-t  
MaxHeap h=new MaxHeap(); =4[v 3Qx  
h.init(data); 4#ug]X4Y')  
for(int i=0;i h.remove(); |zR8rqBX;  
System.arraycopy(h.queue,1,data,0,data.length); 9^,Lc1"M>  
} crqpV F]1]  
1nQWW9i  
private static class MaxHeap{ 33#0J$j7  
e<=cdze  
void init(int[] data){ 'SCidN(n  
this.queue=new int[data.length+1]; ]vgB4~4#LP  
for(int i=0;i queue[++size]=data; Pf|siC^;s~  
fixUp(size); LJ*q1 ;<E  
} >H'4{|  
} {U!8|(  
k *Q<3@S  
private int size=0; [21 =5S  
])L A42|  
private int[] queue; Kz>3 ic$I  
dik:4;  
public int get() { ]Bm/eRy"  
return queue[1]; y$@ZN~8  
} &GlwC%$S  
Cg&e(  
public void remove() { (@t(?Js  
SortUtil.swap(queue,1,size--); RnhL< Ywu  
fixDown(1); L%Ow#.[C2  
} VCn{mp*h  
file://fixdown >+]_5qc  
private void fixDown(int k) { zY,r9<I8_x  
int j; p /#$io  
while ((j = k << 1) <= size) { c}y [[EX  
if (j < size %26amp;%26amp; queue[j] j++; #Yr9AVr}K  
if (queue[k]>queue[j]) file://不用交换 AI,(z;{P  
break; T-5nB>)  
SortUtil.swap(queue,j,k); uM_#  
k = j; 5$wpL(:R(  
} *tgnYa[l  
} 89\n;5'f4  
private void fixUp(int k) { KcK>%%  
while (k > 1) { #bl6sa{E  
int j = k >> 1; s}jHl8  
if (queue[j]>queue[k]) EGZb7:Y?  
break; 'h^0HE\~p  
SortUtil.swap(queue,j,k); ^1Zeb$Nw'  
k = j; E_8\f_%wK  
} @1DX  
} cfcim.jB  
COW}o~3-4  
} wvbPnf^y  
AgFVv5  
} <5NF;  
{_S}H1,  
SortUtil: =,Dqqf  
,`gl&iB  
package org.rut.util.algorithm; iMs5zf <M  
N 5i+3&  
import org.rut.util.algorithm.support.BubbleSort; P@,nA41,j  
import org.rut.util.algorithm.support.HeapSort; w9, iq@  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2I&o69x?  
import org.rut.util.algorithm.support.ImprovedQuickSort; EI:w aIr  
import org.rut.util.algorithm.support.InsertSort; Yc,7tUz#  
import org.rut.util.algorithm.support.MergeSort; M-[ $L XR  
import org.rut.util.algorithm.support.QuickSort; 'B@e8S) y  
import org.rut.util.algorithm.support.SelectionSort; *e-A6S h  
import org.rut.util.algorithm.support.ShellSort; hi0R.V&  
rFC" Jx  
/** yQ^($#Yk  
* @author treeroot ( YQWbOk  
* @since 2006-2-2 Hd,p!_  
* @version 1.0 ]p;FZ4-T  
*/ /Wy.>YC|  
public class SortUtil { DqX{'jj  
public final static int INSERT = 1; M-;4   
public final static int BUBBLE = 2; DSt]{fl`P  
public final static int SELECTION = 3; "dI;  
public final static int SHELL = 4; (y M^  
public final static int QUICK = 5; ]ut5S>,"  
public final static int IMPROVED_QUICK = 6; D5:{fWVsV/  
public final static int MERGE = 7; i:u1s"3~  
public final static int IMPROVED_MERGE = 8; WHlYo5?  
public final static int HEAP = 9; 6%fKuMpK(  
C&6IU8l\  
public static void sort(int[] data) { Zc!@0  
sort(data, IMPROVED_QUICK); ' 4E R00  
} ^|TG$`M(w  
private static String[] name={ h;-yU.(w  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 04*6(L)h*  
}; =IUUeFv +r  
Le*.*\  
private static Sort[] impl=new Sort[]{ Qu7T[ <  
new InsertSort(), 'w14sr%  
new BubbleSort(), mWyqG*-Hb  
new SelectionSort(), ;>AL`M+  
new ShellSort(), /__PSK  
new QuickSort(), }sx_Yj  
new ImprovedQuickSort(), Wy ZL9K{?  
new MergeSort(), %/>Y/!;  
new ImprovedMergeSort(), ]>+PnP35G  
new HeapSort() QjC22lW-  
}; #Jna6  
** +e7k   
public static String toString(int algorithm){ 9 Rx s  
return name[algorithm-1]; +n7?S~R$  
} AQc,>{Lm  
EaWS. eK  
public static void sort(int[] data, int algorithm) { JKX_q&bUw  
impl[algorithm-1].sort(data); Fh*j#*oe  
} NNF>Xa`9,  
4<x'ocKlD  
public static interface Sort { VL[kJi   
public void sort(int[] data); '}rRzD:  
} %J8|zKT5t  
8kbY+W%n  
public static void swap(int[] data, int i, int j) { n=,\;3Y=  
int temp = data; HBY.DCN[Z  
data = data[j]; wP57Pf0  
data[j] = temp; u-1;'a  
} 8v7 1e>  
} >j{z>  
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