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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。 R=`U4Ml;  
插入排序: " Wp   
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package org.rut.util.algorithm.support; G9\EZ\x!  
lZ}P{d'f.  
import org.rut.util.algorithm.SortUtil; j7f5|^/x3  
/** 8{oZi]ob  
* @author treeroot X$/E>I  
* @since 2006-2-2 S#,+Z7  
* @version 1.0 V {p*z  
*/ +<&E3Or  
public class InsertSort implements SortUtil.Sort{ w{3ycR  
O{~KR/  
/* (non-Javadoc) ^D>fis  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -(!uC +BZX  
*/ $Jcq7E~  
public void sort(int[] data) { =tq1ogE  
int temp; k!&:(]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a_Jb> }  
} )`^ /(YG  
} J<rlz5':  
} Y.7}  
[O\9 9>  
} hqL+_| DW  
?H`j>]%&  
冒泡排序: 4h;4!I|  
*,17x`1e  
package org.rut.util.algorithm.support; $%Z3;:<Uf-  
 s'TY[  
import org.rut.util.algorithm.SortUtil; "e@n:N!  
B_hPcmB  
/** RpYcD  
* @author treeroot m^Glc?g<  
* @since 2006-2-2 :5jexz."M  
* @version 1.0 b:1 L@8s;  
*/ +Juh:1H  
public class BubbleSort implements SortUtil.Sort{ \9w~pO  
H'Nq#K  
/* (non-Javadoc) -G-3q6A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tF^g<)S;t  
*/ 4@h;5   
public void sort(int[] data) { gX^ PSsp  
int temp; %&h c"7/k  
for(int i=0;i for(int j=data.length-1;j>i;j--){ J#''q"rZ  
if(data[j] SortUtil.swap(data,j,j-1); n}JPYu  
} 9Sz7\W0  
} *}w+ 68eO  
} LL.x11 o3  
} pw\P<9e=  
oR#Ob#&  
} }RIU8=P  
<UT>PCNG  
选择排序: N'QqJe7Z  
9,scH65x  
package org.rut.util.algorithm.support; _w>uI57U  
V&%C\ns4  
import org.rut.util.algorithm.SortUtil; a.q;_5\5`  
x#r<,uNn,  
/** nR[^|CAR  
* @author treeroot rEM#D]k  
* @since 2006-2-2 at| \FOKj  
* @version 1.0 H:Y&OZ  
*/ [1SMg$@<  
public class SelectionSort implements SortUtil.Sort { |cgui  
cS(;Qs]Q  
/* k"0;D-lTZ>  
* (non-Javadoc) A?A9`w  
* <^c3}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lL0M^Nv  
*/ m(_9<bc>  
public void sort(int[] data) { Us=eq "eu  
int temp; `eR 7H>I  
for (int i = 0; i < data.length; i++) { Om9jtWk  
int lowIndex = i; !),t"Ae?>  
for (int j = data.length - 1; j > i; j--) { to`mnp9Z  
if (data[j] < data[lowIndex]) { N 9LgU)-Jt  
lowIndex = j; uokc :D  
} 4x=(Zw_X  
} ~KPv7WfG  
SortUtil.swap(data,i,lowIndex); 4-^[%&>}  
} 0[Eb .2I  
} )+EN$*H  
|>+uw|LtZ  
} |##GIIv;i  
3{ "O,h  
Shell排序: ]iVLHVqz  
'!Wvqs  
package org.rut.util.algorithm.support; pO]8 dE0  
j_GBH8 `  
import org.rut.util.algorithm.SortUtil; >;9NtoE  
IZrk1fh  
/** t,<UohL|z  
* @author treeroot (>7>3  
* @since 2006-2-2 >bIF>9T  
* @version 1.0 Y3rt5\!  
*/ 9 <\`nm  
public class ShellSort implements SortUtil.Sort{ PVYyE3`UB  
WD.U"YI8y  
/* (non-Javadoc) `q_<Im%I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Z|($21W  
*/ qINTCm j  
public void sort(int[] data) { 6Hf,6>  
for(int i=data.length/2;i>2;i/=2){ ,b|-rU\  
for(int j=0;j insertSort(data,j,i); Ch5+N6c^  
} VteEDL/w  
} L l}yJ#3,  
insertSort(data,0,1); BC77<R!E)  
} rQr!R$t/[  
q-_' W,  
/** Z a(|(M H  
* @param data 3CZS)  
* @param j 6gU{(H   
* @param i "#4dW7E  
*/ k;KdW P  
private void insertSort(int[] data, int start, int inc) { r\qz5G *6  
int temp; /.Q4~Hw%}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m4m<nnM  
} DQ80B)<O  
} N+g@8Q2s;5  
} goZ V.,w  
<Ef[c@3  
} h-QLV[^  
:Li/=>R^  
快速排序: J2M(1g)t9  
r:g9Z_  
package org.rut.util.algorithm.support; +ts0^;QO2{  
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import org.rut.util.algorithm.SortUtil; Vw~\H Gs/~  
@PSLs *  
/** w/m:{cHk  
* @author treeroot l,`!rF_  
* @since 2006-2-2 5kMWW*Xtf  
* @version 1.0 .F2 :!h$  
*/ /,tAoa~FA  
public class QuickSort implements SortUtil.Sort{ (S /F)?  
6v732;^  
/* (non-Javadoc) >: Wau  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^%<pJMgdF  
*/ K7(MD1tk  
public void sort(int[] data) { r>t1 _b+nu  
quickSort(data,0,data.length-1); ,wj"! o#  
} jndGiMA  
private void quickSort(int[] data,int i,int j){ ?Bx./t><  
int pivotIndex=(i+j)/2; ]A+o>#n}x  
file://swap Es4qPB`g.  
SortUtil.swap(data,pivotIndex,j); lpm JLH.F  
] d?x$>  
int k=partition(data,i-1,j,data[j]); 55DE\<r  
SortUtil.swap(data,k,j); yVJ%+d:6  
if((k-i)>1) quickSort(data,i,k-1); zT9JBMNE:  
if((j-k)>1) quickSort(data,k+1,j); 4N>>+]MWc  
K8[DZ)rO;Z  
} 1hmc,c  
/** )!W45"l-3M  
* @param data CIC[1,  
* @param i MMQ;mw=^]  
* @param j v~)LO2y   
* @return n/Dp"4H%q  
*/ /-M@[p&  
private int partition(int[] data, int l, int r,int pivot) { ,kM)7!]N  
do{ /X*oS&-M  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); zfI}Q}p  
SortUtil.swap(data,l,r); Acm<-de  
} } cNW^4F  
while(l SortUtil.swap(data,l,r); ~Y!kB:D5;~  
return l; MuI2?:~:*4  
} U1R4x!ym4  
E6MA?Ax&=  
} 5.0e~zlM -  
el PE%'  
改进后的快速排序: S: :>N.y  
G}zZQy  
package org.rut.util.algorithm.support; \_BkY%a  
Ym8}ZW-  
import org.rut.util.algorithm.SortUtil; m`A% p  
F"jt&9jg  
/** gAbD7SE  
* @author treeroot A%bCMP  
* @since 2006-2-2 +9A\HQ|22  
* @version 1.0 obH; g*  
*/ 47>>4_Hz  
public class ImprovedQuickSort implements SortUtil.Sort { aaW]J mRb  
~$,qgf  
private static int MAX_STACK_SIZE=4096; 4'>1HW  
private static int THRESHOLD=10; _lxco=qd=%  
/* (non-Javadoc) j?i#L}.I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S?0$?w?  
*/ l.=p8-/$'7  
public void sort(int[] data) { g=8un`]7  
int[] stack=new int[MAX_STACK_SIZE]; !q"cpL'4  
42C<1@>zO  
int top=-1; !cX[-}Q  
int pivot; YTaLjITG  
int pivotIndex,l,r; V!/:53  
z8_XX$Mnt  
stack[++top]=0; KOSM]c\H  
stack[++top]=data.length-1; YK#fa2ng  
Dl\`  
while(top>0){ b1?xeG#  
int j=stack[top--]; |V,<+BEi  
int i=stack[top--]; *f+: <=i  
/bRg?Q  
pivotIndex=(i+j)/2; Xl-e !  
pivot=data[pivotIndex]; :l\V'=%9'@  
:l u5Uu~  
SortUtil.swap(data,pivotIndex,j); O6s.<` \  
iJh!KEy~A5  
file://partition Sm{>rR  
l=i-1; 2t#L:vY  
r=j; 'DbMF?<.  
do{ OS-f(qXd+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3`.P'Fh(k  
SortUtil.swap(data,l,r); 4@  3[  
} % ZU/x d  
while(l SortUtil.swap(data,l,r); f>$``.O  
SortUtil.swap(data,l,j); Wd,a?31|  
2tQ`/!m>v$  
if((l-i)>THRESHOLD){ $&I 'o  
stack[++top]=i; 5g5'@vMN  
stack[++top]=l-1; umEVy*hc  
}  ZI>km?w  
if((j-l)>THRESHOLD){ Q;/a F`  
stack[++top]=l+1; LV{Q,DrP  
stack[++top]=j;  >]D4Q<TY  
} @* ust>7  
e /K#>,  
} J5M+FwZq  
file://new InsertSort().sort(data); ?\=/$Gt  
insertSort(data); `C E^2  
} J>vMo@  
/** <'U]`L p  
* @param data Qx3eLfm  
*/ \%jVg\4 '  
private void insertSort(int[] data) { , \)a_@@k  
int temp; +>f<EPGn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q 9F)  
} W&Y"K)`  
} VyLH"cCv  
} (=x"Y{%  
D@ek9ARAq  
} I27,mS+]  
F =a+z/xKT  
归并排序: &dB-r&4;+  
%q 3$|>  
package org.rut.util.algorithm.support; !RvRGRSyF  
lEjwgk {  
import org.rut.util.algorithm.SortUtil; Pt,ebL~  
CB\{!  
/** z`@^5_  
* @author treeroot 7E$&2U^Js  
* @since 2006-2-2 iP@6hG`:  
* @version 1.0 iPG0o %  
*/ hf6f.Z  
public class MergeSort implements SortUtil.Sort{ )$%Z:  
$D1w5o-  
/* (non-Javadoc) RBKOM$7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :*514N  
*/ ]jMKC8uz  
public void sort(int[] data) { dtStTT  
int[] temp=new int[data.length]; S^I,Iz+`S'  
mergeSort(data,temp,0,data.length-1); Dr<='Ux[5  
} k`KGB  
q<vf,D@{ !  
private void mergeSort(int[] data,int[] temp,int l,int r){ I&yVx8aH}  
int mid=(l+r)/2; Wzq>JNn y  
if(l==r) return ; b&) 5:&MI  
mergeSort(data,temp,l,mid); M)-6T{[IT  
mergeSort(data,temp,mid+1,r); \ gwXH  
for(int i=l;i<=r;i++){ J97R0  
temp=data; koG{ |elgB  
} ]$-cMX  
int i1=l; 8TV;Rtl  
int i2=mid+1; ed 59B)?l  
for(int cur=l;cur<=r;cur++){ Q[n\R@  
if(i1==mid+1) 3Mjj' 5KH!  
data[cur]=temp[i2++]; 6c4&VW  
else if(i2>r) 'fV%Z  
data[cur]=temp[i1++]; xg`h40c  
else if(temp[i1] data[cur]=temp[i1++]; '=E9En#@  
else imB#Eo4eY  
data[cur]=temp[i2++]; Nil}js27  
} d;[u8t  
} M5L{*>4|6  
R{Z-m2La  
} kK>Xrj6  
|iYg >  
改进后的归并排序: IV16d  
RSfM]w}Hq#  
package org.rut.util.algorithm.support; +ZsX*/TOn  
Z$KLl((  
import org.rut.util.algorithm.SortUtil; -!M,75nU  
g:ErZ;[  
/** 6SM:x]`##,  
* @author treeroot AbwbAm+  
* @since 2006-2-2 FVsj;  
* @version 1.0 83~ i:+;  
*/ pcS+o  
public class ImprovedMergeSort implements SortUtil.Sort { @ T ;L$x  
fG LG$b  
private static final int THRESHOLD = 10; @~ Dh'w2q  
c~,23wP1  
/* eitu!=u  
* (non-Javadoc) b8KsR=]4I  
* c{#yx_)V&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \0;(VLN'U  
*/ *O$CaAr\s  
public void sort(int[] data) { f|EUqu%E  
int[] temp=new int[data.length]; 7v}x?I  
mergeSort(data,temp,0,data.length-1); 2RtHg_d_l  
} k8nLo.O  
8ovM\9qT  
private void mergeSort(int[] data, int[] temp, int l, int r) { XE3aXK'R  
int i, j, k; V3N0Og3  
int mid = (l + r) / 2; H!IshZfktn  
if (l == r) u0)7i.!M  
return; [s1pM1x  
if ((mid - l) >= THRESHOLD) 8iQ[9  
mergeSort(data, temp, l, mid); ^n.WZUk  
else 1$lh"fHU  
insertSort(data, l, mid - l + 1); 1nhtM  
if ((r - mid) > THRESHOLD) 5~ 'Ie<Y_  
mergeSort(data, temp, mid + 1, r); m`? MV\^  
else A1Y7;-D  
insertSort(data, mid + 1, r - mid); <G8w[hs  
%GEJnJ  
for (i = l; i <= mid; i++) { &NZfJs  
temp = data; t/oN>mQG  
} "VxWj}+]  
for (j = 1; j <= r - mid; j++) { ,{eU P0]  
temp[r - j + 1] = data[j + mid]; er.L7  
} al9.}  
int a = temp[l]; \(UKd v  
int b = temp[r]; L #[]I,  
for (i = l, j = r, k = l; k <= r; k++) { X<OSN&d  
if (a < b) { #.B"q:CW*P  
data[k] = temp[i++]; =nUW'  
a = temp; [`=LTBt  
} else { #_  C  
data[k] = temp[j--]; !G5a*8]  
b = temp[j]; &F$:Q:* *  
} d5I f"8`@  
} ]<uQ.~  
} R5_i15<  
8[%Ao/m  
/** qa >Ay|92e  
* @param data [&S}dQ"  
* @param l Oeya%C5'  
* @param i \a^,sV  
*/ th5g\h%j*  
private void insertSort(int[] data, int start, int len) { Wo$%9!W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8euZTfK9e  
} "I- w  
} \[2lvft!  
} 'fwU]Hm  
} &sVvWNO#2  
{Z;t ^:s#  
堆排序: F9q8SA#"  
7\ SUr9[  
package org.rut.util.algorithm.support; ~q0*"\Ff  
`Kl`VP=c  
import org.rut.util.algorithm.SortUtil; a@d=>CT$  
.4.pJbOg  
/** c8 K3.&P6  
* @author treeroot 3B0lb "e  
* @since 2006-2-2 [t]X/O3<  
* @version 1.0 f2)XP$:  
*/ E9! N>0  
public class HeapSort implements SortUtil.Sort{ s=I'e/"7  
\g)Xt?w0Wo  
/* (non-Javadoc) RH;:9_*F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g\oSG)  
*/ 3#kitmV  
public void sort(int[] data) { -5G)?J/*  
MaxHeap h=new MaxHeap(); 3+7^uR$/I4  
h.init(data); w]j+9-._  
for(int i=0;i h.remove(); H%f:K2  
System.arraycopy(h.queue,1,data,0,data.length); CE NVp"C/`  
} lVH<lp_ZtK  
wgeNs9L  
private static class MaxHeap{ pj|pcv^  
Q'B6^%:<~  
void init(int[] data){ ?@6b>='!  
this.queue=new int[data.length+1]; q(^Q3  
for(int i=0;i queue[++size]=data; ]Z<_ " F  
fixUp(size); .] 4W!])9  
} em@EDMvI  
} jZfx Jm  
U$&hZ_A  
private int size=0; iGXI6`F"  
`xS{0P{uj  
private int[] queue; t-%Q`V=[  
[V# r7a  
public int get() { ^S)TO}e  
return queue[1]; [(LV  
} p 5u_1U0  
BF|(!8S$U  
public void remove() { m8]?hJY 3l  
SortUtil.swap(queue,1,size--); {-zMHVw=}  
fixDown(1); ~!6K]hB4  
} Tn-C>=tR~%  
file://fixdown DdV'c@rq+  
private void fixDown(int k) { C2e.2)y  
int j; F-Z%6O,2  
while ((j = k << 1) <= size) { ?^Hf Np9  
if (j < size %26amp;%26amp; queue[j] j++; OIb  
if (queue[k]>queue[j]) file://不用交换 _K2?YY(#>  
break; "T/>d%O1b  
SortUtil.swap(queue,j,k); lw%?z/HDf  
k = j; 8am`6;O:!  
} e>'H IO  
} 1nj(h g  
private void fixUp(int k) { `<\}FS`'  
while (k > 1) { beY=g7|  
int j = k >> 1; Ru!He,k7  
if (queue[j]>queue[k]) @pV5}N[]  
break; z(RL<N%  
SortUtil.swap(queue,j,k); ~K_Uq*dCE  
k = j; <{(/E0~V/<  
} ^o?SM^  
} X##1! ad  
!SOrCMHx  
} eZhPu'id\s  
dP$GThGl  
} M s9E@E  
qgt[~i*  
SortUtil: 3{Nbp  
%rQuBi# 1f  
package org.rut.util.algorithm; !%mAh81{&/  
$Byj}^;1  
import org.rut.util.algorithm.support.BubbleSort; iSRpfU  
import org.rut.util.algorithm.support.HeapSort; qKS;x@  
import org.rut.util.algorithm.support.ImprovedMergeSort; C z#Z<:  
import org.rut.util.algorithm.support.ImprovedQuickSort; OY-w?'p?W  
import org.rut.util.algorithm.support.InsertSort; zkM"cb13q/  
import org.rut.util.algorithm.support.MergeSort; .uo.N   
import org.rut.util.algorithm.support.QuickSort; C=Fzu&N}  
import org.rut.util.algorithm.support.SelectionSort; |C \}P  
import org.rut.util.algorithm.support.ShellSort; #4LFG\s  
~Z/ ^c,[:  
/** }Y(]6$uS  
* @author treeroot PrQ?PvA<L  
* @since 2006-2-2 A?5E2T1L%.  
* @version 1.0 4S0>-?{  
*/ F7m?xy  
public class SortUtil { ge3sU5iZ  
public final static int INSERT = 1; >r/rc`Q  
public final static int BUBBLE = 2; l2%bF8]z  
public final static int SELECTION = 3; cNpe_LvW  
public final static int SHELL = 4; 4o:hyh   
public final static int QUICK = 5; N<|$h5isq  
public final static int IMPROVED_QUICK = 6; 2g{)AtK$#  
public final static int MERGE = 7; IHfzZHy  
public final static int IMPROVED_MERGE = 8; `L;eba  
public final static int HEAP = 9; X8eJ4%  
{npcPp9  
public static void sort(int[] data) { 8{U-m0v  
sort(data, IMPROVED_QUICK); B DY}*cX  
} *="8?Z  
private static String[] name={ jdeV|H} u  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }G46g#_6d>  
}; Q "r_!f  
u]^N&2UW  
private static Sort[] impl=new Sort[]{ [mxTa\  
new InsertSort(), /76 1o\Q  
new BubbleSort(), D-imL;|  
new SelectionSort(), m%+IPZ2m  
new ShellSort(), DH DZ_t:  
new QuickSort(), NBh%:tu7M  
new ImprovedQuickSort(), `7aDEzmJ  
new MergeSort(), g_*T?;!.U  
new ImprovedMergeSort(), z!QDTIb  
new HeapSort() `;,Pb&W~  
}; p_*M:P1Ma4  
d<w~jP\  
public static String toString(int algorithm){ 9_ICNG%  
return name[algorithm-1]; NW|f7 ItX  
} SDG-~(Y  
R`Aj|C z  
public static void sort(int[] data, int algorithm) { wCs3:@UH  
impl[algorithm-1].sort(data); j;yf8Nf  
} &MR/6"/s  
z9 u$~  
public static interface Sort { D;GD<zC]  
public void sort(int[] data); #yseiVm;  
} (LvS :?T}  
$ZPX]2D4B#  
public static void swap(int[] data, int i, int j) { ;wiao(t>4N  
int temp = data; $!vxVs9n  
data = data[j]; h)lPi   
data[j] = temp; b/$km?R  
} :vx$vZb  
} A|#`k{+1-  
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