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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。 )5<c8lzp  
插入排序: ZY)&Fam}  
B5qlU4km&  
package org.rut.util.algorithm.support; h(FFG%H(  
Z"9D1Uk  
import org.rut.util.algorithm.SortUtil; p=dM2>  
/** Ix.Y_}  
* @author treeroot bl8y o4  
* @since 2006-2-2 E(an5x/r  
* @version 1.0 V}/AQe2m&  
*/ R@[1a+}5  
public class InsertSort implements SortUtil.Sort{ UmP\;  
-pN'r/$3V  
/* (non-Javadoc) K^[Dz\ov5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j'LO '&sQ(  
*/ @=6$ImU  
public void sort(int[] data) { _^NL{R/  
int temp; `6Yk-5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6 $5SS#  
} 03 I*@jj  
} pq*4yaTT'  
} 9{R88f?;  
(+.R8  
} MgQb" qx  
$$---Y   
冒泡排序: :w26d-QR(  
bP1]:^ x@W  
package org.rut.util.algorithm.support; ?_@Mg\Hc  
QjFE  
import org.rut.util.algorithm.SortUtil; .10$n*  
6hf6Z 3  
/** TE@bV9a  
* @author treeroot &}b-aAt  
* @since 2006-2-2 g:[yA{Eh  
* @version 1.0 T3/Gl 6f  
*/ 8'VcaU7Nh  
public class BubbleSort implements SortUtil.Sort{ fTV3lyk  
b^&nr[DC  
/* (non-Javadoc) -Z&9pI(3R~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lm(k[]@  
*/ )uH#+IU  
public void sort(int[] data) { LX;" Mz>  
int temp; -<@QR8:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ j%Z%_{6Ds*  
if(data[j] SortUtil.swap(data,j,j-1); "S0WFP\P+  
} oz?pE[[tm  
} R}0!F 2  
} 4w(#`'I>  
} 8Rd*`]@[pk  
(-hGb:  
} 5c6?$v /  
yxL(mt8  
选择排序: HpR(DG) ?  
nB#XQ8Nzx^  
package org.rut.util.algorithm.support; nrRP1`!]T  
;Km74!.e7  
import org.rut.util.algorithm.SortUtil; f]]UNS$AYQ  
nQ^ c{Bm:  
/** yq\p%z$:  
* @author treeroot |eFce/  
* @since 2006-2-2 0I"r*;9?K  
* @version 1.0 Cc>+OUL  
*/ Tj,1]_`=V$  
public class SelectionSort implements SortUtil.Sort { lb<D,&+  
61&A`  
/* 4Y4QR[>IU3  
* (non-Javadoc) n_MY69W  
* 9*j$U$:'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GGkU$qp2~  
*/ i>=!6Hu2  
public void sort(int[] data) { NT<vs"<B  
int temp; DjveMs$d  
for (int i = 0; i < data.length; i++) { n8'#'^|  
int lowIndex = i; )XoIb[s"  
for (int j = data.length - 1; j > i; j--) { xPorlX)zW  
if (data[j] < data[lowIndex]) { f|'8~C5I@>  
lowIndex = j; @0U={qX  
} h5VZ-v_j  
} >):^Zs  
SortUtil.swap(data,i,lowIndex); ^*_|26  
} _jD\kg#LY  
} Zp <^|=D  
xjg(}w  
} "P@oO,.  
}\/ 3B_X6N  
Shell排序: KVZ-T1K  
?Y\hC0a60  
package org.rut.util.algorithm.support; -5sKJt]+i  
.%T.sQ  
import org.rut.util.algorithm.SortUtil; p1B~F  
2s<uT  
/** Zsx\GeE%:  
* @author treeroot KkD&|&!Q7u  
* @since 2006-2-2 VJ()sbl{k  
* @version 1.0 &BS*C} },  
*/ rM{V>s:N  
public class ShellSort implements SortUtil.Sort{ o=y0=,:a?9  
%Ae43  
/* (non-Javadoc) vOi4$I~CJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "6 \_/l  
*/ z"j]m_m H  
public void sort(int[] data) { F<LRo}j"9Q  
for(int i=data.length/2;i>2;i/=2){ *^Xtorqo  
for(int j=0;j insertSort(data,j,i); xmBGZ4f%  
} B4 +A  
} U)iq  
insertSort(data,0,1); s\3OqJo%)  
} fsz:A"0H  
9@yi UX  
/** .p$tb2%r  
* @param data {bD:OF  
* @param j p^THoF'~T  
* @param i ,)%$Zxng  
*/ }?^5L7n  
private void insertSort(int[] data, int start, int inc) { +X|^ ~)tMJ  
int temp;  "DsL$D2e  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8q_"aa,`  
} (~OP)F).  
} n>\2_$uDI  
} o#=@!m  
;X)b=  
} Bb zmq  
&^1{x`Qo=  
快速排序: l#cG#-  
{?hpW+1,#  
package org.rut.util.algorithm.support; Ic')L*i7O  
9L9qLF5 t  
import org.rut.util.algorithm.SortUtil; g8L{xwx<  
1%`Nu ]D  
/**  G%5ZG$as  
* @author treeroot lXOT>$qR<  
* @since 2006-2-2 qEajT"?  
* @version 1.0 ~x6<A\  
*/ "#G`F  
public class QuickSort implements SortUtil.Sort{ -cP7`.a  
crl"Ec  
/* (non-Javadoc) 3+oGR5gIN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 35/K9l5  
*/ \ _l4li  
public void sort(int[] data) { Ze"m;T  
quickSort(data,0,data.length-1); @e:= D  
} jN T+?2  
private void quickSort(int[] data,int i,int j){ GiS:Nq`$(  
int pivotIndex=(i+j)/2; DuI>z?bS  
file://swap  /wT<p  
SortUtil.swap(data,pivotIndex,j); J1g+H2  
Eu|O<9U\  
int k=partition(data,i-1,j,data[j]); S:8 WBY]M  
SortUtil.swap(data,k,j); +sFpIiJg  
if((k-i)>1) quickSort(data,i,k-1); =>htX(k}  
if((j-k)>1) quickSort(data,k+1,j); %:e.ES  
nN5fP<H2x  
} o9]i {e>L  
/** "< })X.t  
* @param data X;7hy0Y  
* @param i CRs@x` 5ue  
* @param j l?)!^}Qc  
* @return @RXkj-,eC#  
*/ b!oj3|9  
private int partition(int[] data, int l, int r,int pivot) { 9|NH5A"H.  
do{ ?4cj"i  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \qz! v  
SortUtil.swap(data,l,r); vo>i36  
} XJ e}^k  
while(l SortUtil.swap(data,l,r); 2KtK.2;7  
return l; TXo`P_SE  
} kJK*wq]U6  
Wn-'iD+9<  
} kwUy^"O  
w0^}c8%WR  
改进后的快速排序: SW)jDy  
A~({vb'  
package org.rut.util.algorithm.support; ;(&S1Rv9  
i"d&U7Q  
import org.rut.util.algorithm.SortUtil; t W}"PKv  
MFQyB+Z  
/** IxaF *4JG  
* @author treeroot u~7fK  
* @since 2006-2-2 E<sd\~~A:  
* @version 1.0 JA~q}C7A7o  
*/ Lu CiO  
public class ImprovedQuickSort implements SortUtil.Sort { X^Fc^U8  
?&?5x%|.<  
private static int MAX_STACK_SIZE=4096; qs!A)H#  
private static int THRESHOLD=10; i2+_~$f  
/* (non-Javadoc) -G(#,rXk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1YN w=  
*/ "h-ZwL  
public void sort(int[] data) { _p^$.\k"  
int[] stack=new int[MAX_STACK_SIZE]; Jq?Fi'2F%  
L%jIU<?Z7  
int top=-1; hBi/lHu'  
int pivot; Mj`g84  
int pivotIndex,l,r; 3,?LpdTS  
IG&twJR  
stack[++top]=0; uHq;z{ 2GI  
stack[++top]=data.length-1; 8]D0)  
P^AI*tH"m  
while(top>0){ 1gQ_76Yck  
int j=stack[top--]; #I1q,fm  
int i=stack[top--]; >t{-_4Yv?  
JOH\K0=e  
pivotIndex=(i+j)/2; u|LDN*#DW  
pivot=data[pivotIndex]; 0Wj,=9q  
=Cd{bj.8  
SortUtil.swap(data,pivotIndex,j); P$Q,t2$A  
 +;-ZU  
file://partition 0:`*xix  
l=i-1; G=]ox*BY  
r=j;  &Ufp8[  
do{ nyetK  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0 9qfnQG  
SortUtil.swap(data,l,r); Y"L|D,ex  
} QBh*x/J  
while(l SortUtil.swap(data,l,r); @C%6Wo4l3  
SortUtil.swap(data,l,j); ST2:&xH(  
OG9 '[o`8  
if((l-i)>THRESHOLD){ !yd ]~t 5Q  
stack[++top]=i; Lt ^*L% x  
stack[++top]=l-1; Gt)ij?~  
} w'E(9gV  
if((j-l)>THRESHOLD){ D?=4'"@v  
stack[++top]=l+1; \SoT^PW  
stack[++top]=j; e+V8I&%  
} J/IRCjQ}  
8L+A&^qx  
} 33 ; '6/  
file://new InsertSort().sort(data); QQHQ3 \  
insertSort(data); NcBz("  
} 4/%Y@Z5  
/** nRvaCAt^  
* @param data  yj=OR|v  
*/ \d*ts(/a*  
private void insertSort(int[] data) { \~g,;>%7Y  
int temp; 'iTY?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c8Q}m(bhWI  
} Xmi~fie  
} qV;I<AM  
} 9J?lNq  
/EG'I{oC  
} o".,JnbX l  
s/B_  
归并排序: uq ;yR[w"  
RL$%Vy0  
package org.rut.util.algorithm.support; @v#,SF{  
g/_0WW]}  
import org.rut.util.algorithm.SortUtil; BeN]D  
I\x9xJ4x  
/** DJ*mWi.  
* @author treeroot  "iR:KW@  
* @since 2006-2-2 [:(/cKo  
* @version 1.0 q#@r*hl  
*/ t|mK5aR4  
public class MergeSort implements SortUtil.Sort{ =H3tkMoi2  
#4JLWg  
/* (non-Javadoc) T:@7EL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k~gOL#$  
*/ r<4j;"lQK  
public void sort(int[] data) { Oet+$ b  
int[] temp=new int[data.length]; ,<Z,-0S  
mergeSort(data,temp,0,data.length-1); 1= 7ASS9  
} UhrRB  
m"'} {3$%  
private void mergeSort(int[] data,int[] temp,int l,int r){ CmV &+C$V%  
int mid=(l+r)/2; !\$V?*p7  
if(l==r) return ; W+/_0GgQ3  
mergeSort(data,temp,l,mid); _m[DieR  
mergeSort(data,temp,mid+1,r); >:4`y"0  
for(int i=l;i<=r;i++){ jCXBp>9$M  
temp=data; #UhH  
} .#-F@0a  
int i1=l; Rk[a|T&  
int i2=mid+1; L~^5Ez6U  
for(int cur=l;cur<=r;cur++){ q2s0g*z  
if(i1==mid+1) cdh0b7tj n  
data[cur]=temp[i2++]; r~2hTie  
else if(i2>r) UfPHV%Wd  
data[cur]=temp[i1++]; 1]eRragm"  
else if(temp[i1] data[cur]=temp[i1++]; k|\M(Z*(P  
else V.z8 ]iG  
data[cur]=temp[i2++]; wMj #.Jh  
} ]ly" K!1,  
} GGhk~H4OP  
9^ZtbmUf  
} SJ<v< B  
dJ m9''T')  
改进后的归并排序: ~D>pu%F  
b,YNCb]H  
package org.rut.util.algorithm.support; 3F@P$4!#l  
Eh ";irE  
import org.rut.util.algorithm.SortUtil; $xbW*w  
k}Q<#   
/** I8j:{*h  
* @author treeroot kaXq.  
* @since 2006-2-2 pmvd%X\f  
* @version 1.0 ];4!0\M  
*/ U: Wet,  
public class ImprovedMergeSort implements SortUtil.Sort { as!a!1  
($kw*H{Ah^  
private static final int THRESHOLD = 10; \0d'y#Gp*  
,aLwOmO  
/* )0iN2L]U;  
* (non-Javadoc) .1jiANY  
* "GQ Q8rQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %^HE^ &  
*/ fO&`A:JY  
public void sort(int[] data) { y:}qoT_.  
int[] temp=new int[data.length]; TKv!wKI  
mergeSort(data,temp,0,data.length-1); a!E22k?((z  
} *$W&jfW  
gWGDm~+  
private void mergeSort(int[] data, int[] temp, int l, int r) { `vgaX,F*  
int i, j, k; [GI~ &  
int mid = (l + r) / 2; 8ZVQM7O  
if (l == r) w|-3X  
return; ]5c(:T F  
if ((mid - l) >= THRESHOLD) "mf$E|  
mergeSort(data, temp, l, mid); jt on\9  
else ESIP+  
insertSort(data, l, mid - l + 1); U`i5B;k}-  
if ((r - mid) > THRESHOLD) P+}~6}wJE  
mergeSort(data, temp, mid + 1, r); ft6)n T/"&  
else 8zD>t~N2C  
insertSort(data, mid + 1, r - mid); !43 !JfD  
l^9gFp~I  
for (i = l; i <= mid; i++) { NBY|U{.g  
temp = data; LWT\1#  
} L|T?,^  
for (j = 1; j <= r - mid; j++) { Rbf6/C  
temp[r - j + 1] = data[j + mid]; , :#bo]3  
} YE{ [f@i0  
int a = temp[l]; .{h"0<x  
int b = temp[r]; z6C(?R  
for (i = l, j = r, k = l; k <= r; k++) { AtG~!)hG  
if (a < b) { _ (F-(X|  
data[k] = temp[i++]; )6C+0b*  
a = temp; dHXe2rTE;&  
} else { $TXxhd 6  
data[k] = temp[j--]; ovTL'j!  
b = temp[j]; p> `rTaeZg  
} Iz09O:ER  
} 1xW!j!A;  
} B/1j4/MS  
Oh*~+/u}q  
/** r |C.K  
* @param data {fzX2qMZ]  
* @param l BsIF3sS#9  
* @param i [~ s+,OO9)  
*/ QDg5B6>$  
private void insertSort(int[] data, int start, int len) { @@Ybg6.+*  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); N3|:MMl  
} MO8}i?u=z  
} FOsd{Fw  
} U`ttT5;  
} !H\o Qv-I  
sv% X8  
堆排序: N|DI k  
qY#*LqV  
package org.rut.util.algorithm.support; B>^6tdz  
n[iwi   
import org.rut.util.algorithm.SortUtil; ^?`fN'!p  
A-CU%G9  
/** S} m=|3%y  
* @author treeroot $72eHdy/yl  
* @since 2006-2-2 vPNbV  
* @version 1.0 My8d%GfM  
*/ l#KcmOz  
public class HeapSort implements SortUtil.Sort{ mrP48#Y+l  
x|rc[e%k  
/* (non-Javadoc) lmzHE8MUNu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q"XDxa'7"  
*/ \%a0Lp{ I  
public void sort(int[] data) { 89FAh6uE  
MaxHeap h=new MaxHeap(); Xxg|01  
h.init(data); V/ G1C^'/  
for(int i=0;i h.remove(); 73cb1 kfPd  
System.arraycopy(h.queue,1,data,0,data.length); Trv}YT.  
} L@S\ rImw  
4>jHS\jc  
private static class MaxHeap{ O2{["c e  
SH?McBxS  
void init(int[] data){ #Q8_:dPY  
this.queue=new int[data.length+1]; ,<rC,4-F<  
for(int i=0;i queue[++size]=data; F}_b7 |^  
fixUp(size); _`udd)Y2  
} +; KUL6  
} %} `` :  
 ##rkyd  
private int size=0; 5^g*  
ZbYC3_7w  
private int[] queue; =0g!Q   
9p W~Gz  
public int get() { zr.\7\v  
return queue[1]; 6<];}M_{  
} H -Mb:4  
PAYw:/(P  
public void remove() { O+}py{ st  
SortUtil.swap(queue,1,size--); N#T'}>ty  
fixDown(1); ^jMrM.GY  
} + `|A/w  
file://fixdown s:3[#&PQpN  
private void fixDown(int k) { {cXr!N^K  
int j; &>JP.//spi  
while ((j = k << 1) <= size) { o P`l)`  
if (j < size %26amp;%26amp; queue[j] j++; GTP'js  
if (queue[k]>queue[j]) file://不用交换 6'Q{xJe?  
break; <L-F3Buu  
SortUtil.swap(queue,j,k); h3?>jE=H  
k = j; fN&\8SPE  
} /+Z*)q+SbT  
} &u>dKf)5  
private void fixUp(int k) { 3a?-UT!  
while (k > 1) { QHR,p/p  
int j = k >> 1; ~Gu$E qQ  
if (queue[j]>queue[k]) 5kiW@{m  
break; <w2h@ea  
SortUtil.swap(queue,j,k); }=-0 DSLVj  
k = j; '=_(fa,  
} yvYMk(LSF  
} f% pT-#  
*dw.=a9  
} f{P1.?a  
Jl{ 0q7b  
} nI*.(+h  
@_+aX.,  
SortUtil: \Bo%2O%4  
!D??Y^6bI  
package org.rut.util.algorithm; <\&9Odqc  
TR DQ+Z  
import org.rut.util.algorithm.support.BubbleSort; *S,~zOYN  
import org.rut.util.algorithm.support.HeapSort; YYe G9yR  
import org.rut.util.algorithm.support.ImprovedMergeSort; P.]h`4  
import org.rut.util.algorithm.support.ImprovedQuickSort; *fg2bz<~[B  
import org.rut.util.algorithm.support.InsertSort; G}nJ3  
import org.rut.util.algorithm.support.MergeSort; b>uD-CSA  
import org.rut.util.algorithm.support.QuickSort; ~|+ ~/  
import org.rut.util.algorithm.support.SelectionSort; [neuwdN  
import org.rut.util.algorithm.support.ShellSort; E5ce=$o  
"-Q+!byh  
/** /lBK )(  
* @author treeroot ~lj[> |\Oj  
* @since 2006-2-2 .t "VsY|  
* @version 1.0 _?~%+Oz/  
*/ T8^9*]:@c!  
public class SortUtil { A=<7*E  
public final static int INSERT = 1; 2HeX( rB  
public final static int BUBBLE = 2; &,&+p0CSI!  
public final static int SELECTION = 3; hXTfmFy{n  
public final static int SHELL = 4; hF2e--  
public final static int QUICK = 5;  !VGG2N8  
public final static int IMPROVED_QUICK = 6; HRf;bKZ  
public final static int MERGE = 7; FNQ<k[#K'~  
public final static int IMPROVED_MERGE = 8; ,2FK$: M\  
public final static int HEAP = 9; b80#75Bj>  
Y(PCc}/\  
public static void sort(int[] data) { | b'Ut)E  
sort(data, IMPROVED_QUICK); E %mEfj7  
} nfEbu4|  
private static String[] name={ W==~ 9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2R/|/>T v  
}; F1Z'tjj+  
LF7- ?? '  
private static Sort[] impl=new Sort[]{ I*u3 e  
new InsertSort(), RAW;ze*"  
new BubbleSort(), g|~px$<iY  
new SelectionSort(), h(|T.  
new ShellSort(), Z [!"x&H]h  
new QuickSort(), T fLqxioqZ  
new ImprovedQuickSort(), <,} h8;Fr  
new MergeSort(), Q %o@s3~O  
new ImprovedMergeSort(), {-Y;!  
new HeapSort() cH5i420;aO  
}; f[o~d`z  
',EI[ ]+  
public static String toString(int algorithm){ %Ig$:I(o  
return name[algorithm-1]; ]oGd,v X  
} <`nShP>vl  
:j&enP5R(q  
public static void sort(int[] data, int algorithm) { ~o'1PAW7  
impl[algorithm-1].sort(data); x UdF.c  
}  YSD G!  
`5Y*) q  
public static interface Sort { f?5>V   
public void sort(int[] data); /QXUD.( 8  
}  3 xyrWl  
<h#*wy:o2  
public static void swap(int[] data, int i, int j) {  t`o"K  
int temp = data; $_.t'8F  
data = data[j]; 5Tl5T&  
data[j] = temp; b| L;*<KU  
} s#X/ F  
} J M`w6}  
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