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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。 CDP U\ZG  
插入排序: )L#i%)+  
\P.I)n`8 y  
package org.rut.util.algorithm.support; X~lVVBO  
w8MG(Lq1"  
import org.rut.util.algorithm.SortUtil; @JD;k>  
/** QR%mj*@Wle  
* @author treeroot 2w["aVr =  
* @since 2006-2-2 $wo?!gt  
* @version 1.0 Nv(9N-9r  
*/ ~8GFQ ph  
public class InsertSort implements SortUtil.Sort{ XZ^^%*ew  
{ys=Ndo8  
/* (non-Javadoc) {u#;?u=|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +kzo*zW$L  
*/ j@SQ~AS  
public void sort(int[] data) { 555XCWyrC  
int temp; -_1>C\h"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8=NM|i  
} gj*+\3KO@a  
} j!U-'zJ  
} Dpl A?  
.P[ _<8  
} thifRd$4  
:_g$.h%%  
冒泡排序: yXHUJgjl/  
@cFJeOC|  
package org.rut.util.algorithm.support; G+X Sfr  
xlA$:M&  
import org.rut.util.algorithm.SortUtil; uTKD 4yig  
2QJ{a46}  
/** dwDcR,z?a  
* @author treeroot u*Pibgd<  
* @since 2006-2-2 J|~MC7#@q  
* @version 1.0 ? }kG`q  
*/ hRUhX[  
public class BubbleSort implements SortUtil.Sort{ {(r`k;fB  
6)Y.7XR  
/* (non-Javadoc) -OapVac  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;#vKi0V7  
*/ whi`Z:~  
public void sort(int[] data) { 23Nw!6S  
int temp; ;\14b?TUH  
for(int i=0;i for(int j=data.length-1;j>i;j--){ LUM@#3&  
if(data[j] SortUtil.swap(data,j,j-1); 0{,Z{&E  
} u~WVGjoQ  
} PH+S};Uxv  
} B{'( L |  
} g^}8:,F_  
u>kN1kQ8  
} YoBPLS`K  
{q `jDDM  
选择排序: +yk24 ` >  
g*03{l#P  
package org.rut.util.algorithm.support; inh=WUEW  
apg=-^L'  
import org.rut.util.algorithm.SortUtil; HY&aV2|A1  
A8uVK5  
/** M%2+y5  
* @author treeroot ?0v-qj+  
* @since 2006-2-2 NbgK@eV}+{  
* @version 1.0 =a@j=  
*/ x{n`^;Y1  
public class SelectionSort implements SortUtil.Sort { l5Gq|!2yxD  
P<X\%_Iat  
/* n1ly y0%u  
* (non-Javadoc) G9xmmc  
* :6vm+5!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l49*<nkmq  
*/ NQ(1   
public void sort(int[] data) { GP?M!C,/}k  
int temp; @+Si?8\  
for (int i = 0; i < data.length; i++) { BJM.iXU)[  
int lowIndex = i; `*_mP<Ag  
for (int j = data.length - 1; j > i; j--) { [lWQ'DZ  
if (data[j] < data[lowIndex]) { lDYyqG4  
lowIndex = j; VF?<{F  
} [RLN;(0n  
} =5/9%P8j9  
SortUtil.swap(data,i,lowIndex); 8<8:+M}  
} pTPi@SBaP{  
} lI*o@wQg  
!F A]  
} x:),P-~w  
m[~V/N3  
Shell排序: Xejo_SV&?  
 >qS9PX  
package org.rut.util.algorithm.support; 5-aj 2>=7  
x[h^[oF0  
import org.rut.util.algorithm.SortUtil; 8ZM&(Lz7u  
*K|W /'_&  
/** pA9+Cr!0Q  
* @author treeroot &7PG.Ff!r  
* @since 2006-2-2 nExU#/*~^  
* @version 1.0 wO'T BP  
*/ YH vLGc%  
public class ShellSort implements SortUtil.Sort{ ^p[rc@+  
?OcJ )5C4  
/* (non-Javadoc) UTH*bL5/J2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kCR_tn 4  
*/ N/ %WsQp  
public void sort(int[] data) { /178A;J y  
for(int i=data.length/2;i>2;i/=2){ H*ow\ Ct  
for(int j=0;j insertSort(data,j,i); 'p> Ra/4  
} mZSD(  
} _jLL_GD  
insertSort(data,0,1); o]yl ;I  
} w80oXXs[#  
,l !Ta "  
/** _FH`pv  
* @param data B8f8w)m  
* @param j `|{-+m  
* @param i oW ::hB  
*/ "e.jZcN*  
private void insertSort(int[] data, int start, int inc) { 7 n8"/0kc:  
int temp; fI&t]   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U>]$a71  
} _I@9HC 4  
} Fv~20G (O  
} <0b)YJb4M  
c~z82iXNO  
} l`oZ) ?ur  
#Y*X<L  
快速排序: llcb~  
?[@J8  
package org.rut.util.algorithm.support; f .Q\Z'S^  
AL9chYP}/  
import org.rut.util.algorithm.SortUtil; ~;l@|7wGz  
ED=V8';D  
/** XGYbnZ~   
* @author treeroot h2Ld[xvCu%  
* @since 2006-2-2 )J2mM  
* @version 1.0  gbF+WE  
*/ L2\#w<d  
public class QuickSort implements SortUtil.Sort{ ]V^iN=(_5  
Xe$I7iKD  
/* (non-Javadoc) OLyf8&AU@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $xzAv{  
*/ #.rdQ,)<  
public void sort(int[] data) { b*a#<K$T_  
quickSort(data,0,data.length-1); 7m4ao K  
} ^q{9  
private void quickSort(int[] data,int i,int j){ nyQ&f'<   
int pivotIndex=(i+j)/2; wPQH(~k:  
file://swap cG[l!Z  
SortUtil.swap(data,pivotIndex,j); 0)Uce=t`  
(SpX w,:  
int k=partition(data,i-1,j,data[j]); 4 {y)TZ  
SortUtil.swap(data,k,j); \UPjf]&  
if((k-i)>1) quickSort(data,i,k-1); _Gn2o2T  
if((j-k)>1) quickSort(data,k+1,j); Y~c|hfL  
J\+0[~~  
} B^4&-z2|  
/** E{XH?_xo  
* @param data |XQIfW]A  
* @param i 'GNK"XA^  
* @param j +ieY:H[  
* @return @:+8?qcP  
*/ 6n,i0W  
private int partition(int[] data, int l, int r,int pivot) { +O8%Hm  
do{ ff]6aR/ UQ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Vr]id  
SortUtil.swap(data,l,r); 8<X#f !  
} B,?T%  
while(l SortUtil.swap(data,l,r); %KsEB*' "  
return l; m8A#~i .  
} `7c~m ypx  
% Qmn-uZ  
} ;D3C >7y  
e|)hG8FlF  
改进后的快速排序: CyJEY-  
NP0\i1P>.?  
package org.rut.util.algorithm.support; T$>WE= Y  
9]k @Q_  
import org.rut.util.algorithm.SortUtil; h}[-'>{  
e%svrJ2   
/** \nXtH}9ZF  
* @author treeroot =$u! 59_dE  
* @since 2006-2-2 <CS(c|7  
* @version 1.0 l{5IUuUi  
*/ "sS}N%!  
public class ImprovedQuickSort implements SortUtil.Sort { 1Ir21un  
I3a NFa}  
private static int MAX_STACK_SIZE=4096; 6/5YjO|a  
private static int THRESHOLD=10; F0GxH?  
/* (non-Javadoc) ( l\1n;s*B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !\-{D$E?H  
*/ +9M^7/}H  
public void sort(int[] data) { 8m-U){r!U^  
int[] stack=new int[MAX_STACK_SIZE]; \HqNAE2T  
t)~"4]{*}D  
int top=-1; @@R7p  
int pivot; ,BH@j%Jmy  
int pivotIndex,l,r; BBaQ}{F8>2  
APvDP?  
stack[++top]=0; W<bGDh  
stack[++top]=data.length-1; @P#N2:jwj  
w^Sz#_2  
while(top>0){ CNih6R  
int j=stack[top--]; U_Vs.M.p  
int i=stack[top--]; |t^E~HLm,  
. k#U]M  
pivotIndex=(i+j)/2; >=qf/K +#  
pivot=data[pivotIndex]; @Pm>sY}d<I  
O8+7g+J=!  
SortUtil.swap(data,pivotIndex,j); b,5~b&<h  
y`VyQWW  
file://partition IoxgjUa  
l=i-1; I5`4Al  
r=j; gR&Q3jlIV  
do{ SzAJ2:qhl  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ! +a. Ei  
SortUtil.swap(data,l,r); y=fx%~<> 8  
} G/k2Pe{SL  
while(l SortUtil.swap(data,l,r); vleS2-]|  
SortUtil.swap(data,l,j); XeW<B0~  
!<j'Ea  
if((l-i)>THRESHOLD){ |nc@"OJ  
stack[++top]=i; I& 2c&yO  
stack[++top]=l-1; IshKH -  
} ' KP@W9j  
if((j-l)>THRESHOLD){ n&L+wqJ  
stack[++top]=l+1; 4;w;'3zq  
stack[++top]=j; sQ=]NF)\  
} dz:E?  
{Bk[rCl  
} P60~ V"/P  
file://new InsertSort().sort(data); s(5Y  
insertSort(data); ]GMe \n  
} jfP*"uUK  
/** rxe >}ZO  
* @param data ,-$LmECg  
*/ ,g%0`SO  
private void insertSort(int[] data) { D60aH!ft  
int temp; cm&nd'A't  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ; ^*}#X d  
} y0{u<"t%w  
} )fFb_U  
} :yL] ;J  
ed]=\Key  
} "fQ~uzg="  
Pnk5mK$  
归并排序: yg `j-9[8  
{}>0e:51  
package org.rut.util.algorithm.support; f~t:L, \,  
NvD7Krqwa  
import org.rut.util.algorithm.SortUtil; Qk0R a_  
S{Kiy#ltWc  
/** Hn7_FOC  
* @author treeroot bbtGXfI+SB  
* @since 2006-2-2 L(/e&J@><  
* @version 1.0 J}*,HT*  
*/ &VhroHO  
public class MergeSort implements SortUtil.Sort{ z#8~iF1  
'OE&/ C [  
/* (non-Javadoc)  Hu^1[#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8{|8G-Mi  
*/ 0Be< X  
public void sort(int[] data) { )s)I2Z+  
int[] temp=new int[data.length]; 4qphA9i1  
mergeSort(data,temp,0,data.length-1); d:_t-ZZo  
} -0d0t!  
fWCo;4<5?  
private void mergeSort(int[] data,int[] temp,int l,int r){ x5|I  
int mid=(l+r)/2; xN>npP   
if(l==r) return ; GX)u|g  
mergeSort(data,temp,l,mid); w ~.f  
mergeSort(data,temp,mid+1,r); wa(8Hl|Y  
for(int i=l;i<=r;i++){ '@cANGg7[  
temp=data; kj|6iG  
} 6 +Sxr  
int i1=l; z F_M*8=  
int i2=mid+1; &LmJ!^#  
for(int cur=l;cur<=r;cur++){ 4ae`pAu  
if(i1==mid+1) ?# Mr  
data[cur]=temp[i2++]; 2`AY~i9  
else if(i2>r) ucuSe!IcX  
data[cur]=temp[i1++]; :lX!\(E2  
else if(temp[i1] data[cur]=temp[i1++]; H;D>|q  
else Qwz}B  
data[cur]=temp[i2++]; )bA;?i  
} Bt[/0>i  
} \@-@Y  
o=u3&liBi  
} b[__1E9v'  
$[9%QQk5<L  
改进后的归并排序: n+! AnKq  
Gn22<C/  
package org.rut.util.algorithm.support; E_gD:PPU5  
t![7uU.W  
import org.rut.util.algorithm.SortUtil; Qf58ig-vCY  
2{M^,=^>  
/** V GL aN%|  
* @author treeroot !*/*8re  
* @since 2006-2-2 Nw:GCf-L  
* @version 1.0 yTyj'-4  
*/ cO-7ke  
public class ImprovedMergeSort implements SortUtil.Sort {  |$+3a  
ZkgV_<M|  
private static final int THRESHOLD = 10; G=)i{oC  
+QB"8-  
/* IWBX'|}K  
* (non-Javadoc) :KH g&ZX7  
* Q.bXM?V)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A_n7w  
*/ pEw"8U  
public void sort(int[] data) { !y#"l$"xK  
int[] temp=new int[data.length]; < 3(LWxw  
mergeSort(data,temp,0,data.length-1); uvgdY  
} h}-3\8 >  
{Z{75}  
private void mergeSort(int[] data, int[] temp, int l, int r) { TH)"wNa  
int i, j, k; hrmut*<|  
int mid = (l + r) / 2; yhlFFbU  
if (l == r) ?8HHA: GP  
return; ::o lN  
if ((mid - l) >= THRESHOLD) _t:$XJ`bTk  
mergeSort(data, temp, l, mid); }L &^xe  
else X#d~zk[r2  
insertSort(data, l, mid - l + 1); J2d.f}-  
if ((r - mid) > THRESHOLD) s.EI`*xylY  
mergeSort(data, temp, mid + 1, r); eD-#b|  
else R|JC1f8P5  
insertSort(data, mid + 1, r - mid); `id 9j  
mCRt8 rY;  
for (i = l; i <= mid; i++) { ;g8R4!J  
temp = data; so^lb?g  
} >82@Q^O  
for (j = 1; j <= r - mid; j++) { YgKZ#?*  
temp[r - j + 1] = data[j + mid]; YX%[ipgB  
} H /,gro  
int a = temp[l]; z|fmrwkN'$  
int b = temp[r]; })uGRvz  
for (i = l, j = r, k = l; k <= r; k++) { 9s_vL9u  
if (a < b) { xrlmKSPa  
data[k] = temp[i++]; =nz}XH%=  
a = temp; >d~WH@o`G  
} else { PEc,l>u9  
data[k] = temp[j--]; Gb"r|(!  
b = temp[j]; 8m5p_\&  
} P D4Tz!F  
} $ oTdfb  
} NHB4y/2  
SH3|sXH<  
/** _AYXc] 4%  
* @param data OtSL*'7>  
* @param l c/Qt Ot  
* @param i J~=n`pW  
*/ >oea{u  
private void insertSort(int[] data, int start, int len) { )S`jFQ1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ktI/3Mb@  
} n 9\ C2r  
} tc_286'x  
} D@G\7 KH@  
} )64@2 ~4y  
BeCWa>54i  
堆排序: ^ K|;~}P  
%R1tJ(/  
package org.rut.util.algorithm.support; )X04K~6lY  
:z}MIuf  
import org.rut.util.algorithm.SortUtil; El<]b7  
Rfn9s(m  
/** l6(-I Tb  
* @author treeroot h H <J,Wn  
* @since 2006-2-2 O#&c6MDB:  
* @version 1.0 0ph{  
*/ .tkT<o-u<J  
public class HeapSort implements SortUtil.Sort{ "@evXql3`  
OQ8 bI=?[x  
/* (non-Javadoc) m#ZO`W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U ?'vXa  
*/ C(S'#cm  
public void sort(int[] data) { tcI}Ca>u  
MaxHeap h=new MaxHeap(); x2@U.r"zo  
h.init(data); 0_k '.5l%  
for(int i=0;i h.remove(); &GNxo$CG  
System.arraycopy(h.queue,1,data,0,data.length); v4?x.I  
} Jwj%_<  
/V=24\1Ky  
private static class MaxHeap{ 6}75iIKi  
";BlIovT=R  
void init(int[] data){ 9V,!R{kO!  
this.queue=new int[data.length+1]; :*t"8;O[  
for(int i=0;i queue[++size]=data; =81@ o,1w  
fixUp(size); VmCW6 G#M  
} : q ti  
} ii%+jdi.  
i.=w]S j  
private int size=0; iP@ZM =&wz  
|UP `B|  
private int[] queue; YWMGB#=  
PN0VQ/..  
public int get() { 1J6,]M  
return queue[1]; "oWwc zzO  
} MepuIh  
!icT/5  
public void remove() { iZPCNS"  
SortUtil.swap(queue,1,size--); V~S0hqW[  
fixDown(1); 0OT\"O~S[  
} ~ns7O  
file://fixdown \I["2C]3M  
private void fixDown(int k) { !1n8vzs"c  
int j; :gerQz4R8  
while ((j = k << 1) <= size) {  |?Frj  
if (j < size %26amp;%26amp; queue[j] j++; ( xXGSx  
if (queue[k]>queue[j]) file://不用交换 0ge$ p,  
break; \=+b}mKV m  
SortUtil.swap(queue,j,k); )foq),2  
k = j; N-jTc?mT~&  
} "8 ~:[G#  
} Glxuz0]  
private void fixUp(int k) { N;Dni#tQ`  
while (k > 1) { z^_*&  
int j = k >> 1; `Q+ (LBP  
if (queue[j]>queue[k]) s"9`s_p`d  
break; b3S.-W{p.  
SortUtil.swap(queue,j,k); 8 %%f%y  
k = j; .~Fp)O:!  
} TlI<1/fP}  
} fBgEnz/  
!_+8A/  
} 8~90 30>Q  
@ U kr  
} <EPj$::  
gzBy?r> r  
SortUtil: |u0( t,T  
AtU v71D:  
package org.rut.util.algorithm; ( Fynok  
fGw^:,B  
import org.rut.util.algorithm.support.BubbleSort; y_*PQZ$c<  
import org.rut.util.algorithm.support.HeapSort; {88gW\GL  
import org.rut.util.algorithm.support.ImprovedMergeSort; UbEb&9}  
import org.rut.util.algorithm.support.ImprovedQuickSort; CPVjmRUF|  
import org.rut.util.algorithm.support.InsertSort; lY~4'8^  
import org.rut.util.algorithm.support.MergeSort; %STliJ  
import org.rut.util.algorithm.support.QuickSort; %|^OOU}  
import org.rut.util.algorithm.support.SelectionSort; )x}l3\s  
import org.rut.util.algorithm.support.ShellSort; *<E]E?  
'xhcuVl  
/** d)@<W1;  
* @author treeroot G P:FSprP  
* @since 2006-2-2 ?."&MZ  
* @version 1.0 $U$V?x uE  
*/ |+35y_i6  
public class SortUtil { z\0 CE]#T  
public final static int INSERT = 1; tp6M=MC%  
public final static int BUBBLE = 2; eh4gQ^l  
public final static int SELECTION = 3; 28/ ADZ  
public final static int SHELL = 4; mNb ?*3\  
public final static int QUICK = 5; V$"ujRp  
public final static int IMPROVED_QUICK = 6; QCH}-q)  
public final static int MERGE = 7; `(1K  
public final static int IMPROVED_MERGE = 8; :C}2=  
public final static int HEAP = 9; 2<`.#zIds  
txZ?=8j_Y  
public static void sort(int[] data) { neXeAU  
sort(data, IMPROVED_QUICK); -zp0S*iP7  
} ?OE.O/~l  
private static String[] name={ d"5oD@JG:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vKq^D(&cl  
}; |o2sbLp  
7_.11$E=H  
private static Sort[] impl=new Sort[]{ ,g7.rEA  
new InsertSort(), a-"k/P#  
new BubbleSort(), "V>R9dO{"!  
new SelectionSort(), Cw~RJ^a_  
new ShellSort(), Yk'9U-.mc  
new QuickSort(), PzV@umC1#f  
new ImprovedQuickSort(), B|C/ Rk6?  
new MergeSort(), +$$$  
new ImprovedMergeSort(), #'-Sh7ycW  
new HeapSort() UK$ms~H  
}; `6[I^qG".  
^K7ic,{  
public static String toString(int algorithm){ %.<H=!$  
return name[algorithm-1]; ?Zc"C  
} Rx*BwZ  
`%E8-]{uS  
public static void sort(int[] data, int algorithm) { X=6y_^  
impl[algorithm-1].sort(data); \S*$UE]uG  
} ,bM-I2BR  
ly4s"4v  
public static interface Sort { P7 ]z  
public void sort(int[] data); Q~MC7-n>  
} Q.9qImgN  
5GA\xM-  
public static void swap(int[] data, int i, int j) { /^$UhX9v  
int temp = data; 5aBAr  
data = data[j]; A%Xt|=^_  
data[j] = temp; Yz4_vePh+5  
} N%7{J  
} V~T@6S  
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