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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。 1VR|z  
插入排序: >lV'}0u)  
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package org.rut.util.algorithm.support; {6tj$&\)  
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import org.rut.util.algorithm.SortUtil; t+ vz=`  
/** XkhGU?={  
* @author treeroot }|OwUdE!R9  
* @since 2006-2-2 fpa ~~E-  
* @version 1.0 "}x%5/(  
*/ KDS} "/  
public class InsertSort implements SortUtil.Sort{ @g5qcjD'[  
X5tx(}j  
/* (non-Javadoc) *N&~Uq^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TYKs2+S6  
*/ bgYUsc*uR  
public void sort(int[] data) { 3oOr*N3R  
int temp; 8Drz i!}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); we/sv9v}n  
} )`BKEa f  
} yu>o7ie+;Y  
} o1?S*  
r])V6 ^U  
} Rc vp@  
G1fC'6$3  
冒泡排序: \c}pzBFd  
S J2l6  
package org.rut.util.algorithm.support;  b]gVZ-  
D&{CC  
import org.rut.util.algorithm.SortUtil;  i}_"  
aka)#0l .  
/** 5P{[8PZxbV  
* @author treeroot brX[-  
* @since 2006-2-2 bC /Ql  
* @version 1.0 V}Ee1C  
*/ aJ QzM  
public class BubbleSort implements SortUtil.Sort{ U=WS]  
%:v<&^oDlm  
/* (non-Javadoc) _G&gF .|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .e5d#gE0  
*/ UqD ]@s`  
public void sort(int[] data) { PthgxB^  
int temp; r )HZaq  
for(int i=0;i for(int j=data.length-1;j>i;j--){ BwkY;Ur/AL  
if(data[j] SortUtil.swap(data,j,j-1); N% ?R(  
} }K5okxio  
} la}cGZ; p.  
} osl\j]U8  
} '55G:r39  
e#)NYcr6  
} Re2&qxE  
Gj?$HFa  
选择排序: -p?&vQDo`  
Gr4v&Mz:  
package org.rut.util.algorithm.support; @C<ofg3E  
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import org.rut.util.algorithm.SortUtil; U.5R3z  
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/** '#XT[\  
* @author treeroot Wb>;L@jB7  
* @since 2006-2-2 yVp,)T9  
* @version 1.0 $}Ab R:z  
*/ p="0Y<2l  
public class SelectionSort implements SortUtil.Sort { : 0 ,yq?M  
OIJT~Z}  
/* P@keg*5@  
* (non-Javadoc) BN `2UVH  
* "%)g^Atp>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |lcp (u*u  
*/ eXMIRus(  
public void sort(int[] data) { [_nOo`  
int temp; $4^SWT.  
for (int i = 0; i < data.length; i++) { :EAh%q  
int lowIndex = i; 0QT:@v2R  
for (int j = data.length - 1; j > i; j--) { yQ$]`hr;  
if (data[j] < data[lowIndex]) { S2e3d  
lowIndex = j; tRpY+s~Fq  
} 641P)  
} h=0a9vIXF  
SortUtil.swap(data,i,lowIndex); 3LT~- SvL  
} "a= Hr4C*r  
} lcm3wJ'w  
9=~ZA{0J  
} 9(J,&)J  
:SS \2  
Shell排序: N[e,%heR  
+C8O"  
package org.rut.util.algorithm.support; +8C }%6aX  
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import org.rut.util.algorithm.SortUtil; W2#<]]-  
FGx)?  
/** 4"k&9+>  
* @author treeroot $3 P De  
* @since 2006-2-2 Uffwzd!  
* @version 1.0 M2|!,2  
*/ Sz@z 0'  
public class ShellSort implements SortUtil.Sort{ O-X(8<~H=  
50QDqC-]XS  
/* (non-Javadoc) 7;o:r$08&}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L?j0t*do  
*/ E<Zf!!3  
public void sort(int[] data) { W06#|8,{v  
for(int i=data.length/2;i>2;i/=2){ Ig t*8px  
for(int j=0;j insertSort(data,j,i); XQ]vJQYIR  
} Vf&U`K  
} XZb=;tYo  
insertSort(data,0,1); )b #5rQ  
} y\Aa;pL)RQ  
3"7Q[9Oj  
/** j*<J&/luYZ  
* @param data 6[3Xe_  
* @param j W|m(Jh[w]  
* @param i &liON1GLM  
*/ BV B2$&eJ  
private void insertSort(int[] data, int start, int inc) { Q?i_Nl/|  
int temp; #\w N2`" W  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); KU,SAcfR7  
} x.*^dM@V  
} 7K\v=  
} Tse#{  
Uv(R^50>  
} a#=d{/ ab  
`!vqT 3p,  
快速排序: iz#R)EB/g  
fA6IW(_bi  
package org.rut.util.algorithm.support; V|MHDMD=  
y>y2,x+[  
import org.rut.util.algorithm.SortUtil; &SE}5ddC7  
IQPu%n{0v  
/** N l@G\_  
* @author treeroot YCD |lL#  
* @since 2006-2-2 ->b5"{t  
* @version 1.0 HLW_Y|QaFo  
*/ 9 8|sWI3 B  
public class QuickSort implements SortUtil.Sort{ |reA`&<q  
^YLC{V  
/* (non-Javadoc) ojy^ A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [f_^B U&  
*/ lgaSIXDK  
public void sort(int[] data) { /aI@2]|~  
quickSort(data,0,data.length-1); LL#REK|lm8  
}  `Eh>E,  
private void quickSort(int[] data,int i,int j){ A3a//e  
int pivotIndex=(i+j)/2; [A7TSN  
file://swap BYq80Vk%@  
SortUtil.swap(data,pivotIndex,j); <Q~N9W  
y(J~:"}7)  
int k=partition(data,i-1,j,data[j]); G ?$ @6  
SortUtil.swap(data,k,j); ]@#9B>v=  
if((k-i)>1) quickSort(data,i,k-1); =x8[%+  
if((j-k)>1) quickSort(data,k+1,j); ^cYB.oeu  
MT-Tt  
} Xf`e 4  
/** }3{eVct#|  
* @param data 5bLNQz\WJ  
* @param i bTum|GWf  
* @param j |8k1Bap`z  
* @return CeYhn\m5K0  
*/ q 6>eb  
private int partition(int[] data, int l, int r,int pivot) { x(Bt[=,K3  
do{ Iq + N0G<j  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %y RGN  
SortUtil.swap(data,l,r); PFJ$Ia|  
} XQy`5iv  
while(l SortUtil.swap(data,l,r); pp@ Owpb  
return l; v$]B;;[A  
} 0vv~G\yM  
B]X8KzLu  
} p3M!H2W  
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改进后的快速排序: ab6I*DbF  
8FuxN2  
package org.rut.util.algorithm.support; )=5 &Q  
*BsK6iVb  
import org.rut.util.algorithm.SortUtil; O52 /fGt  
YbZbA >|  
/** C8-7XQ=B:b  
* @author treeroot ~7 i{~<?  
* @since 2006-2-2 o !tC{"g  
* @version 1.0 A8m06  
*/ CYaN;HV@_  
public class ImprovedQuickSort implements SortUtil.Sort { D>7a0p784  
<A,V/']  
private static int MAX_STACK_SIZE=4096; y#GHmHeh  
private static int THRESHOLD=10; U ]<l-~|  
/* (non-Javadoc) i\sBey ND"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P6v ANL-B  
*/ ~[%CUc"  
public void sort(int[] data) { +hN>Q $E  
int[] stack=new int[MAX_STACK_SIZE]; /s4~Ij`be  
 cyl%p$  
int top=-1; I8bM-k):9R  
int pivot; 1=)M15  
int pivotIndex,l,r; 0-Mzb{n5  
tl 0|.Q,  
stack[++top]=0; &e^;;<*w  
stack[++top]=data.length-1; tkj-.~@g0'  
,:t,$A  
while(top>0){ \FsA-W\X  
int j=stack[top--]; 8US#SI'x  
int i=stack[top--]; \W*L9azr  
Dj\nsc@e3  
pivotIndex=(i+j)/2; e0`z~z]6&  
pivot=data[pivotIndex]; #~ x7G  
VVeJe"!t  
SortUtil.swap(data,pivotIndex,j); ~q ^o|?  
&E&~9"^hQL  
file://partition Skt-5S#  
l=i-1; 99=~vNn  
r=j; WoTeIkM9  
do{ D{+@ ,C7B  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K%J?'-  
SortUtil.swap(data,l,r); ?06gu1z/  
} cACIy yQ  
while(l SortUtil.swap(data,l,r); Hhknjx  
SortUtil.swap(data,l,j); d0>U-.  
x9 > ho  
if((l-i)>THRESHOLD){ [D~]  
stack[++top]=i; SoU(fI[6  
stack[++top]=l-1; -qP)L;n  
} VEgtN}  
if((j-l)>THRESHOLD){ M@.l# [@U  
stack[++top]=l+1; 2_wue49-l  
stack[++top]=j; (l99a&] t  
} &Sd5]r@+  
^{}G4BEY  
} *p(_="J,  
file://new InsertSort().sort(data); T1d@=&0"  
insertSort(data); cp Ot?XYR~  
} > Z+*tq  
/** LACrg  
* @param data hi"C<b.  
*/ G J%^hr`P  
private void insertSort(int[] data) { V;: k-  
int temp; Ic0Sb7c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eke[{%L  
} a}@b2Wc*  
} SMZ*30i  
} XY'=_5t  
|Y!^E % *  
} <W0(!<U  
ZN}`A7  
归并排序: 77M!2S_E  
2'fd4 rE5  
package org.rut.util.algorithm.support;  qra XAQ  
dUv@u !}B  
import org.rut.util.algorithm.SortUtil; >>{):r Z  
8ae`V!5  
/** ]H/,Q6Q  
* @author treeroot /l7 %x.  
* @since 2006-2-2 )xcjQkb  
* @version 1.0 A-r;5?S  
*/ AW r2Bv  
public class MergeSort implements SortUtil.Sort{ 3 P0z$jh"H  
8]#FvgX  
/* (non-Javadoc) @K]`!=vUk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,WE2.MWR  
*/ v\w*VCjoV  
public void sort(int[] data) { ajycYk9<m  
int[] temp=new int[data.length]; q?LOtN? o  
mergeSort(data,temp,0,data.length-1); bhUE!h<  
} r%;|gIky  
8U@f/ P  
private void mergeSort(int[] data,int[] temp,int l,int r){ nq_$!aB_K  
int mid=(l+r)/2; ~m fG Yk"  
if(l==r) return ; mPA)G,^  
mergeSort(data,temp,l,mid); $'\kK,=  
mergeSort(data,temp,mid+1,r); {m U%.5  
for(int i=l;i<=r;i++){ % i?  
temp=data; HW[&q  
} "7sv@I_j  
int i1=l; zYM2`(Z 5B  
int i2=mid+1; _gVihu  
for(int cur=l;cur<=r;cur++){ fExFpR,`  
if(i1==mid+1) ;y-JR$M  
data[cur]=temp[i2++]; g}`g>&l5  
else if(i2>r) IS8 sJ6")  
data[cur]=temp[i1++]; ?J$k 5;  
else if(temp[i1] data[cur]=temp[i1++]; YAXd   
else \L>XF'o  
data[cur]=temp[i2++]; d\qszYP[  
} `n6cpX5  
} ir'<H<t2  
PZ/ tkw  
} HxK'u4I  
l8E))oz1T  
改进后的归并排序: X#T|.mCdC  
dkg`T#}  
package org.rut.util.algorithm.support; Y1lUO[F j  
$/^Y(0  
import org.rut.util.algorithm.SortUtil; 6Zpa[,gm  
*ssw`}yE'  
/** !9gpuS[  
* @author treeroot ->qRGUW  
* @since 2006-2-2 'sAkrl8kt  
* @version 1.0 JAHmmNlW  
*/ Q:) 4  
public class ImprovedMergeSort implements SortUtil.Sort { * 0K]/tn<  
u"5/QB{  
private static final int THRESHOLD = 10; z~Zm1tZs  
iM!V4Wih6  
/* #HL$`&m  
* (non-Javadoc) 7Vf XE/  
* +;!^aNJ,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &5jc &CS  
*/ q h bagw~  
public void sort(int[] data) { R:P),  
int[] temp=new int[data.length]; fBTNI`#  
mergeSort(data,temp,0,data.length-1); 6!)hl"  
} :M;|0w*b  
%D-!< )z  
private void mergeSort(int[] data, int[] temp, int l, int r) { f`vWCb  
int i, j, k; ^Zpz@T>m  
int mid = (l + r) / 2;  l  
if (l == r) V B ^1wm  
return; L?N: 4/0;!  
if ((mid - l) >= THRESHOLD) 'n{=`e(}cI  
mergeSort(data, temp, l, mid); !]"M]tyv\  
else  k=t{o  
insertSort(data, l, mid - l + 1); w)go79  
if ((r - mid) > THRESHOLD) LB7$&.m'B  
mergeSort(data, temp, mid + 1, r); V#599-  
else JWu0VLo  
insertSort(data, mid + 1, r - mid); .4 NcaMj  
cooicKS7  
for (i = l; i <= mid; i++) { EP4?+"Z  
temp = data; WO69Wo\C  
} Yk{4 3yw  
for (j = 1; j <= r - mid; j++) { ?/3{gOgI$`  
temp[r - j + 1] = data[j + mid]; |p/[sD+M  
} sNG 7fi.|  
int a = temp[l]; }q_Iep  
int b = temp[r]; 9u^za!pE  
for (i = l, j = r, k = l; k <= r; k++) { iMYJVB=  
if (a < b) { X.e4pLwGK  
data[k] = temp[i++]; L$Xkx03lz>  
a = temp; $W;r S7b  
} else { W)2k>cS  
data[k] = temp[j--]; nKwOSGPQt  
b = temp[j]; gW G>}M@  
} mst;q@  
} x 'i~o'  
} AGlFbc(L  
NljcHe}Qy  
/** .4z_ohe  
* @param data d<_IC7$u>  
* @param l T~lHm  
* @param i uMFV^&ZF  
*/ Y,KSr|vG  
private void insertSort(int[] data, int start, int len) { z4[ 8*}  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gfXit$s  
} W1}d6Sbg  
} d ~CZ9h  
} ,PWMl [X  
} (K kqyrb  
+ VhD]!  
堆排序: GQ9H>Ssz  
0$R}_Ok  
package org.rut.util.algorithm.support; r+k~%5Ff~  
F{17K$y  
import org.rut.util.algorithm.SortUtil; `g'9)Xf4KT  
|r`0< `  
/** r[nvgzv@  
* @author treeroot eeUEqM$7EX  
* @since 2006-2-2 /a-OB U  
* @version 1.0 G/Yqvu,2!  
*/ $=!_ !tr  
public class HeapSort implements SortUtil.Sort{ 8}OII\  
G $iC@,/  
/* (non-Javadoc) /kFw(l_.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?h-:,icR  
*/ YLNJ4nE  
public void sort(int[] data) { fXx !_Z  
MaxHeap h=new MaxHeap(); ~hQTxLp  
h.init(data); jW.IkG[|  
for(int i=0;i h.remove(); y}> bJ:  
System.arraycopy(h.queue,1,data,0,data.length); tc<HA7vpt~  
} D"s ]dQ$r  
`< cn  
private static class MaxHeap{ ujoJ6UOG  
}Lb[`H,}A  
void init(int[] data){ /-C6I:  
this.queue=new int[data.length+1]; CDDOm8  
for(int i=0;i queue[++size]=data; 9d >AnTf&H  
fixUp(size); >}!})]Xw9  
} {$qLMx';  
} y(Ck j"  
LLW\1 cxi  
private int size=0; 2mPU /  
Q$=X ?{  
private int[] queue; drf?7%v  
T.#Vma  
public int get() { \~@a/J  
return queue[1]; U=\!`_f':  
} q5ja \  
^q)s  
public void remove() { DH{^9HK  
SortUtil.swap(queue,1,size--); z+qrsT/?L  
fixDown(1); ]='zY3  
} +G?nmXG[vj  
file://fixdown IO]%AL(.;  
private void fixDown(int k) { H D{2nZT  
int j; tU >?j1  
while ((j = k << 1) <= size) { yM*f}S/ (  
if (j < size %26amp;%26amp; queue[j] j++; _|vY)4B 4U  
if (queue[k]>queue[j]) file://不用交换 -jQM h  
break; 2<8JY4]!]  
SortUtil.swap(queue,j,k); ^+'\ u;\  
k = j; o[E|xw  
} Jde@T h  
} QcG-/_,'}  
private void fixUp(int k) { Avn)%9  
while (k > 1) { "3X~BdH&J  
int j = k >> 1; z,q1TU9  
if (queue[j]>queue[k]) jK9#. 0  
break; [5sa1$n96G  
SortUtil.swap(queue,j,k); byetbt(IF  
k = j; !;s5\91  
} 5Cjh%rj(jl  
} /D&7 \3}  
y ZR\(\?<  
} 1/% g VB8  
IIIP<nyc  
} xN=:*#Z"pb  
9L9+zs3 k  
SortUtil: <maY S2  
2u?k;"]V  
package org.rut.util.algorithm; A~MIFr/8  
Hklgf  
import org.rut.util.algorithm.support.BubbleSort; +_ZXzzcO<  
import org.rut.util.algorithm.support.HeapSort;  {;| >Qn  
import org.rut.util.algorithm.support.ImprovedMergeSort; }hyl)?*~  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1xzOD@=dI  
import org.rut.util.algorithm.support.InsertSort; c#YW>(  
import org.rut.util.algorithm.support.MergeSort; h k.Zn.6A'  
import org.rut.util.algorithm.support.QuickSort; HH3Ln+AWg_  
import org.rut.util.algorithm.support.SelectionSort; 1aBQ.-E-  
import org.rut.util.algorithm.support.ShellSort; {Jn*{5tZ>  
%1^E;n  
/** JuTIP6 /G  
* @author treeroot @_4E^KgF  
* @since 2006-2-2 5 i;n:&Y  
* @version 1.0 |VxO ,[~  
*/ na,i(m?l  
public class SortUtil { !H/5Ud9  
public final static int INSERT = 1; rVF7!|&  
public final static int BUBBLE = 2; rI.CCPY~s  
public final static int SELECTION = 3; $>=?'wr  
public final static int SHELL = 4; 0JS#{EDh+  
public final static int QUICK = 5; (f `zd.  
public final static int IMPROVED_QUICK = 6; T\b-<Xle  
public final static int MERGE = 7; S"skKh4w  
public final static int IMPROVED_MERGE = 8; # )]L3H<  
public final static int HEAP = 9; "ukiuCfVuW  
/_.1f|{B  
public static void sort(int[] data) { L j>HZS$F  
sort(data, IMPROVED_QUICK); 5KIlU78  
} oW\kJ>!  
private static String[] name={ wi$,Y. :  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Zm+QhnY|  
}; Vnvfu!>(  
I5mtr  
private static Sort[] impl=new Sort[]{ 5nSi29C  
new InsertSort(), "nQ&~KQ  
new BubbleSort(), ?@YABl  
new SelectionSort(), F\IJim-Rh  
new ShellSort(), 5eJMu=UpR  
new QuickSort(), \~~y1.,U.  
new ImprovedQuickSort(), pas^FT~  
new MergeSort(), Wi%e9r{hU  
new ImprovedMergeSort(), ZW)_dg9  
new HeapSort() ~H~iKl}|7  
}; odaCKhdk  
5g\>x;cc  
public static String toString(int algorithm){ :N>n1tHL;A  
return name[algorithm-1]; w+W! dM  
} !)-)*T  
{#C)S&o)6  
public static void sort(int[] data, int algorithm) { o<Y[GW1pg  
impl[algorithm-1].sort(data); _ISaO C{2-  
} iPeW;=-2Wk  
c]1\88  
public static interface Sort { K);)$8K  
public void sort(int[] data); /*kc|V  
} V''?kVJ  
lV M )'m  
public static void swap(int[] data, int i, int j) { `%ulorS  
int temp = data; "%E<%g  
data = data[j]; tQ7:4._  
data[j] = temp; Ygs:Ox"[-G  
} Xdl7'~k  
} >_'0 s  
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