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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。 ~:kZgUP_f  
插入排序: QdH\LL^8R4  
5[k/s}g  
package org.rut.util.algorithm.support; n$x c];j  
v5!d$Vctu  
import org.rut.util.algorithm.SortUtil; TJ_$vI  
/** QR c{vUR&  
* @author treeroot @r/#-?W  
* @since 2006-2-2 \HxT@UQ)~  
* @version 1.0 A-Sv;/yD_  
*/ gPNZF\ r  
public class InsertSort implements SortUtil.Sort{ u)X=Qm)  
dt \TQJc~  
/* (non-Javadoc) AK,J7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b#uL?f  
*/ 0bceI  
public void sort(int[] data) { \\PjKAsh  
int temp; B:b5UD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W98i[Q9A7  
} "Gfh,e  
} |{BIHgMh  
} jqWu  
QwNly4  
} C]O(T2l{l  
dsb`xw  
冒泡排序: `slL %j^"  
.Xfq^'I[  
package org.rut.util.algorithm.support; "9ZID-~]  
HmiR.e%<b  
import org.rut.util.algorithm.SortUtil; [.O?Z=5a[V  
prC;L*~8  
/** _Zp}?b5Q  
* @author treeroot Eza`Z` ^el  
* @since 2006-2-2 1Ce@*XBU  
* @version 1.0 (yu/l 6[  
*/ !POl;%\  
public class BubbleSort implements SortUtil.Sort{ Od)Uv1  
-E^vLB)O  
/* (non-Javadoc) !^^?dRd*v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kW2sY^Rg  
*/ #+:9T /*>0  
public void sort(int[] data) { T}Km?d  
int temp; MuYk};f  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Nh8Q b/::  
if(data[j] SortUtil.swap(data,j,j-1); v0 nj M  
} \a5U8shc  
} k52/w)Ro,$  
} )<oJnxe]  
} (X $=Q6  
m4TE5q%3  
} 2QD3&Q9  
) brVduB  
选择排序: =[H;orMr  
4H,`]B8(D  
package org.rut.util.algorithm.support; ?+_Gs;DGVE  
6DM$g=/ '  
import org.rut.util.algorithm.SortUtil; @XgKYm   
>z/#_z@LV  
/** NE"@Bk cm  
* @author treeroot TlXI|3Ip  
* @since 2006-2-2 kY&k-K\  
* @version 1.0 ^"VJd[Hn  
*/ 1_o],? Q  
public class SelectionSort implements SortUtil.Sort { J5di[nu  
iWRH{mK  
/* GS0;bI4ay  
* (non-Javadoc) t0/p]=+.p/  
* jK!Au  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KX!T8+Y  
*/ ~c8? >oN(  
public void sort(int[] data) { M3J#'%$  
int temp; {!.(7wV\  
for (int i = 0; i < data.length; i++) { M9Cv wMi  
int lowIndex = i; +vYoB$!  
for (int j = data.length - 1; j > i; j--) { TMAJb+@l:  
if (data[j] < data[lowIndex]) {  !;EjB*&  
lowIndex = j; k'gh  
} N96jJk  
} G'rxXJq  
SortUtil.swap(data,i,lowIndex); ~J5+i9T.)  
} D;oe2E{I  
} +!k&Yje  
wAX1l*`  
} {s)+R[?m<o  
sSOOXdnGG  
Shell排序: stG~AC  
)!Jc3%(B  
package org.rut.util.algorithm.support; @En^wN  
CEXyrs<  
import org.rut.util.algorithm.SortUtil; /,1D)0  
mYxuA0/k  
/** T:t]"d}}  
* @author treeroot vh"R'o  
* @since 2006-2-2 n?A6u\sQ  
* @version 1.0 uG?_< mun  
*/ ie;]/v a  
public class ShellSort implements SortUtil.Sort{ .9,zL=)Ba  
'Hc-~l>D  
/* (non-Javadoc) .EpV;xq}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $h^wG)s2P  
*/ ~oI1 zNz/  
public void sort(int[] data) { D Gr> 2  
for(int i=data.length/2;i>2;i/=2){ @WJg WJm  
for(int j=0;j insertSort(data,j,i); B,M(@5wz  
} y@ ML/9X8q  
} U"q/rcA  
insertSort(data,0,1); #?q&r_@@  
} *:>"q ej  
f` :i.Sr  
/** _u{c4U0,  
* @param data XEn*?.e  
* @param j ,oaw0Vw  
* @param i :> D[n1v  
*/ .uyGYj-C  
private void insertSort(int[] data, int start, int inc) { (7XCA,KTGI  
int temp; ^&bRX4pYo  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `kbSu}  
} GytXFL3`:  
} b7!Qn}  
} +x_Rfk$fb  
P`#Z9 HM4  
} 8'<-:KG  
FL(6?8zK  
快速排序: }Z{=|rVE  
Nc+,&R13m  
package org.rut.util.algorithm.support; Y2d;E.DH8  
w;k):; $  
import org.rut.util.algorithm.SortUtil; %CS@g.H=_  
##@$|6  
/** Kl2lbe7  
* @author treeroot %^I88,$&L  
* @since 2006-2-2 0{dz5gUde  
* @version 1.0 9AxCiT.  
*/ p"l3e9&'j  
public class QuickSort implements SortUtil.Sort{ Bn61AFy`  
pY_s*0_  
/* (non-Javadoc) Kv.>Vf.T}_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UilMv~0  
*/ z"+Mrew  
public void sort(int[] data) { M7ers|&{  
quickSort(data,0,data.length-1); Ga#:P F0  
} Z^]|o<.<I  
private void quickSort(int[] data,int i,int j){ YqPQ%  
int pivotIndex=(i+j)/2; <$F\Nk|x  
file://swap JJ{9U(`_y6  
SortUtil.swap(data,pivotIndex,j); P( XaTU&-  
GN!qyT  
int k=partition(data,i-1,j,data[j]); ]u4Hk?j~<  
SortUtil.swap(data,k,j); wk6NG/<  
if((k-i)>1) quickSort(data,i,k-1); -O&CI)`;B  
if((j-k)>1) quickSort(data,k+1,j); IkrF/$r  
\3'9Uz,OC  
} \MjJ9u `8  
/** 3t<a $i  
* @param data mt5KbA>nU  
* @param i ~mO62(8m  
* @param j Ma8_:7`>O  
* @return lY{FSGp  
*/ :$_6SQ<?  
private int partition(int[] data, int l, int r,int pivot) { 8me ]JRw  
do{ 9*E7}b,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e|&6$A>4]  
SortUtil.swap(data,l,r); oyNSh8c7c  
} @BrMl%gV  
while(l SortUtil.swap(data,l,r); -jn WZ5.  
return l; WdZ:K,  
} t=u  Qb=  
I j$lDJS  
} $uap8nN  
zH>hx5,k'X  
改进后的快速排序: c\ia6[3sX  
?Q-h n:F)  
package org.rut.util.algorithm.support; E[O<S B I  
52b*[tZ  
import org.rut.util.algorithm.SortUtil; p|Q*5TO  
"Vr[4&`  
/** k51Eyy50(  
* @author treeroot &q`q4g&7  
* @since 2006-2-2 -AhwI  
* @version 1.0 MB%Q WU  
*/ 6<N5_1  
public class ImprovedQuickSort implements SortUtil.Sort { Dk+&X-]6x5  
s TOa  
private static int MAX_STACK_SIZE=4096; h.!}3\Y  
private static int THRESHOLD=10; ;L|uIg;.s  
/* (non-Javadoc) % , N<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M;0]u.D*=  
*/ R-Z~V  
public void sort(int[] data) { v^ /Q 8Q  
int[] stack=new int[MAX_STACK_SIZE]; P7 PB t  
:> &fV  
int top=-1; ?KITC;\\  
int pivot; Cn>ADWpT&  
int pivotIndex,l,r; Y3h/~bM%  
_DrJVC~6@  
stack[++top]=0; ->h6j  
stack[++top]=data.length-1; 1Nu1BLPm  
9}c8Xt^&  
while(top>0){ +4\U)Z/\  
int j=stack[top--]; O:{U^K:*  
int i=stack[top--]; U|HB=BP  
?x^z]N|P  
pivotIndex=(i+j)/2; (;%|-{7e-  
pivot=data[pivotIndex]; `)qVF,Z}  
JT9N!CGZ  
SortUtil.swap(data,pivotIndex,j); * ,v|y6  
~+<olss_  
file://partition G60R9y47c  
l=i-1; /m( =`aRt  
r=j; % aUsOB-RV  
do{  6l$L~>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ZhNdB  
SortUtil.swap(data,l,r); Cda!Mk:  
} }<PxWZ`,\  
while(l SortUtil.swap(data,l,r); EZ.!rh~+  
SortUtil.swap(data,l,j); q~L^au8  
pxSX#S6I  
if((l-i)>THRESHOLD){ #q3l!3\mW  
stack[++top]=i; M7>(hVEAW'  
stack[++top]=l-1; eUl/o1~mXa  
} \v6 M:KR5/  
if((j-l)>THRESHOLD){ =&!HwOnp  
stack[++top]=l+1; ubu?S%`  
stack[++top]=j; Qm8) 4?FZ  
} ](eN@Xi&@  
jKZt~I  
} XhdSFxW}  
file://new InsertSort().sort(data); Xnuzr" 4u  
insertSort(data); DFO7uw1  
} 0F#>CmD  
/** -[OXSaf6  
* @param data W>M~Sk$v  
*/ N~pIC2Woo  
private void insertSort(int[] data) { y<XlRTy[}  
int temp; M HL("v(@B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L:M0pk{T  
} :Vg}V"QR  
} ?3Ij*}_O2  
} `]$?uQ  
;nmM7TZ;  
} $jd<v1"o  
2X-l{n;>  
归并排序: DWt*jX*  
h{ lDxOH*  
package org.rut.util.algorithm.support; .bf<<+'o  
,}xbAA#  
import org.rut.util.algorithm.SortUtil; BpO9As 1um  
dSIH9D  
/** 6AN)vs}  
* @author treeroot Je4Z(kj 0  
* @since 2006-2-2 Pw@olG'Ah  
* @version 1.0 >EXb|vw   
*/  Voh hQ  
public class MergeSort implements SortUtil.Sort{ jnu Y{0(&  
,J mbqOV?!  
/* (non-Javadoc) ?p[O%_Xf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W v!<bT8r  
*/ SW(q$i  
public void sort(int[] data) { !c<wS Q,  
int[] temp=new int[data.length]; >+cVs:  
mergeSort(data,temp,0,data.length-1); 0;~yZ?6_F  
} }tST)=M`  
Qq0l* )mX  
private void mergeSort(int[] data,int[] temp,int l,int r){ h5|.Et  
int mid=(l+r)/2; Snf"z8sw  
if(l==r) return ; YpdNX.P,  
mergeSort(data,temp,l,mid); ,D80/2U^  
mergeSort(data,temp,mid+1,r); tUE'K.-  
for(int i=l;i<=r;i++){ TUp%FJXA|  
temp=data; j<tq1?? [b  
} 5 HV)[us  
int i1=l; icUT<@0  
int i2=mid+1; @?B6aD|jE  
for(int cur=l;cur<=r;cur++){ j?(!^ _!m  
if(i1==mid+1) e[Xq  
data[cur]=temp[i2++]; ]Ql 0v"` F  
else if(i2>r) (7$$;  
data[cur]=temp[i1++]; N:+ taz-  
else if(temp[i1] data[cur]=temp[i1++]; CfT/R/L  
else `T!#@&+  
data[cur]=temp[i2++]; ;~zNqdlH  
} v:ER 4  
} h:qHR] 8dZ  
 5K56!*Y  
} P-z`c\Rt  
N=,j}FY  
改进后的归并排序: {_ V0  
z YDK $  
package org.rut.util.algorithm.support; x%BF {Sw  
l\q} |o  
import org.rut.util.algorithm.SortUtil;  u>cC O'q  
%l9$a`&  
/** @YL}km&Fw  
* @author treeroot ~I_owCVZ  
* @since 2006-2-2 BD;H   
* @version 1.0 k&s; {|!  
*/ 4L:>4X[T  
public class ImprovedMergeSort implements SortUtil.Sort { Sgj/s~j~1  
LPE)  
private static final int THRESHOLD = 10; [e"RTTRfZ  
L`K;IV%;  
/* Up?=m^  
* (non-Javadoc) 9R]](g#  
* BnEdv8\,&s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o'UHStk  
*/ h W.2p+  
public void sort(int[] data) { LM,fwAX  
int[] temp=new int[data.length]; 9&jPp4qG  
mergeSort(data,temp,0,data.length-1); 6$ e]i|e  
} IcoowZZ   
q.oLmX  
private void mergeSort(int[] data, int[] temp, int l, int r) { obGWxI%a  
int i, j, k; Cd~LsdKE5  
int mid = (l + r) / 2; oX|?:MS:  
if (l == r) <'*4j\*  
return; nm):SEkC  
if ((mid - l) >= THRESHOLD) :EB,{|m  
mergeSort(data, temp, l, mid); \|q-+4]@,  
else #<#%>Y^  
insertSort(data, l, mid - l + 1); B_~jA%0m'  
if ((r - mid) > THRESHOLD) jH0Bo;  
mergeSort(data, temp, mid + 1, r); ,f<B}O  
else ~%P3Pp  
insertSort(data, mid + 1, r - mid); FzhT$7Gw  
%cj58zO |y  
for (i = l; i <= mid; i++) { +qE']yzm!  
temp = data; qY}Cg0[@g  
} S:Xs '0K_  
for (j = 1; j <= r - mid; j++) { 3j&B(aLy  
temp[r - j + 1] = data[j + mid]; )0|):g   
} 3]S`|#J  
int a = temp[l]; kIM C~Z  
int b = temp[r]; Xiju"Cup"  
for (i = l, j = r, k = l; k <= r; k++) { @XBH.A^7r  
if (a < b) { u+DX$#-n!]  
data[k] = temp[i++]; Z3`2-r_=  
a = temp; Sh$U-ch@  
} else { 4WG=m}X  
data[k] = temp[j--]; ?#ihJt,  
b = temp[j]; 5mIXyg 0:  
} <ge}9pU)o^  
} j 0?>w{e  
} ~,Mr0  
lPp6 pVr  
/** u*k*yWdr  
* @param data #S *pD?VZ  
* @param l _#(s2.h~J  
* @param i cuMc*i$w!  
*/ $kv[iI @  
private void insertSort(int[] data, int start, int len) { /&QQ p3  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nrbazyKm  
} kYtHX~@  
} 3.~h6r5-  
} fO+U HSC  
} D+hB[*7Fs  
' 3VqkQ4  
堆排序: .t :DvB  
'2xcce#  
package org.rut.util.algorithm.support; \gP. \  
?"u'#f_  
import org.rut.util.algorithm.SortUtil; 1W0.Ufl)  
nHVPMi>  
/** AtT"RG-6  
* @author treeroot soxfk+ 9  
* @since 2006-2-2 )1K! [ W}t  
* @version 1.0 &|NZ8:*+#  
*/ b_ZNI0Hp@  
public class HeapSort implements SortUtil.Sort{ ik1XGFy?  
)5'rw<:="  
/* (non-Javadoc) 6."PS4}:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lh~<s2[R2  
*/ W0U`Kt&~a  
public void sort(int[] data) { {sl~2#,}b1  
MaxHeap h=new MaxHeap(); ' #KA+?@  
h.init(data); InP[yFV-z  
for(int i=0;i h.remove(); "B~WcC  
System.arraycopy(h.queue,1,data,0,data.length); 5'62ulwMP=  
} tr5'dX4]  
R~!\ -6%_  
private static class MaxHeap{ @OY1`Eu O  
QYH."7X >  
void init(int[] data){ t(wZiK}  
this.queue=new int[data.length+1]; 2c"/QT  
for(int i=0;i queue[++size]=data; cB_pyX9Z  
fixUp(size); m'3OGvd  
} ,cPkx~w0  
} 0c`sb+?  
\ hrBq^I  
private int size=0; nrI"k2oA@  
sC!1B6:  
private int[] queue;  !,Qm  
Ko4)0&  
public int get() { 5 d>nIKW  
return queue[1]; 9) jo7,VM  
} !~?W \b\:  
; A x=]Q  
public void remove() { #dHr&1(  
SortUtil.swap(queue,1,size--); -|6V}wHg~  
fixDown(1); ~Ry $>n*/  
} YomwjKyuP  
file://fixdown wEZ,49  
private void fixDown(int k) { %uh R'8"  
int j; ~K4k'   
while ((j = k << 1) <= size) { &"sX^6t  
if (j < size %26amp;%26amp; queue[j] j++; ,\BfmC_i  
if (queue[k]>queue[j]) file://不用交换 7ytm .lU  
break; @gs26jX~2}  
SortUtil.swap(queue,j,k); _e;N'DZ  
k = j; jQY >9+t  
} yBr$ 0$  
} (qNco8QKu3  
private void fixUp(int k) { %j~9O~-  
while (k > 1) { N5[_a/  
int j = k >> 1; ] dW%g?  
if (queue[j]>queue[k]) ( K^YD K  
break; +I^+k"  
SortUtil.swap(queue,j,k); l :f9Ih  
k = j; ]R97n|s_  
} VC/R)%@%  
} Rh!L'? C  
tpN]evp|  
} j:3A;r\  
j4.Qvj >:4  
} >:3xi{  
N{?Tm`""  
SortUtil: \9dz&H  
cRs{=RGc  
package org.rut.util.algorithm; wJ;9),fL  
^G ]KE8  
import org.rut.util.algorithm.support.BubbleSort; QT7w::ht  
import org.rut.util.algorithm.support.HeapSort; q$e T!'x  
import org.rut.util.algorithm.support.ImprovedMergeSort; pkrl@ jv >  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7AZ5%o  
import org.rut.util.algorithm.support.InsertSort; 'US:Mr3  
import org.rut.util.algorithm.support.MergeSort; |N phG|  
import org.rut.util.algorithm.support.QuickSort; T{5M1r  
import org.rut.util.algorithm.support.SelectionSort; eY0Ly7  
import org.rut.util.algorithm.support.ShellSort; r< d?  
h$#4ebp  
/** umq$4}T '$  
* @author treeroot n?TO!5RZK  
* @since 2006-2-2 ?M*C*/R  
* @version 1.0 RW|UQY#  
*/ KDNTnA1c  
public class SortUtil { +lY\r +;  
public final static int INSERT = 1; g7E`;&f  
public final static int BUBBLE = 2; Jgi{7J  
public final static int SELECTION = 3; \? 5[RR  
public final static int SHELL = 4; qiwQUm{  
public final static int QUICK = 5; jk WBw.(  
public final static int IMPROVED_QUICK = 6; cG~_EX$  
public final static int MERGE = 7; [4V|UvKz  
public final static int IMPROVED_MERGE = 8; 'tq\<y  
public final static int HEAP = 9; ss|6_H =  
8ESkG  
public static void sort(int[] data) { .{-iq(3  
sort(data, IMPROVED_QUICK); ,=XS%g}l4  
} juve9HaW  
private static String[] name={ /_ hfjCE  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" iG;d0>Sp  
}; _S%OX_UMn^  
9v5.4a}  
private static Sort[] impl=new Sort[]{ -Y!=Iw 4  
new InsertSort(), 7@e[:>e  
new BubbleSort(), Z;dwn~Tw  
new SelectionSort(), 6i?kkULBS  
new ShellSort(), NZi'eZ{^`  
new QuickSort(), Ay[9k=q]  
new ImprovedQuickSort(), Q>+_W2~]  
new MergeSort(), xr1I8 5kM  
new ImprovedMergeSort(), ;Kq<',u~  
new HeapSort() lzQ&)7`  
}; c+\Gd}IJq  
=^".{h'-  
public static String toString(int algorithm){ M\$<g  
return name[algorithm-1]; H~1? MAX  
} E!(`275s  
+MZ2e^\F  
public static void sort(int[] data, int algorithm) { M#22Zfxq   
impl[algorithm-1].sort(data); U%S NROj  
} z<C~DH  
ES:p^/=*  
public static interface Sort { 36D,el In  
public void sort(int[] data); L 52z  
} _ jM6ej<  
jak|LOp  
public static void swap(int[] data, int i, int j) { qgY(S}V  
int temp = data; T=)L5Vuq<  
data = data[j]; 9DocId.  
data[j] = temp; BRQ5  
} nh_xbo5L[  
} F\$}8,9  
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