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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。 :iP>z}h  
插入排序: Xjs21-t%  
j lYD~)  
package org.rut.util.algorithm.support; )2iM<-uB  
A8=e?%  
import org.rut.util.algorithm.SortUtil; [5>S-Z  
/** \[Sm2/9v  
* @author treeroot s`$NW^']  
* @since 2006-2-2 CQ@#::'F1  
* @version 1.0 B'WCN&N  
*/ KzEuPJ?  
public class InsertSort implements SortUtil.Sort{ 7Vz[ji  
bBkm]  >  
/* (non-Javadoc) u Y?/B~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qZT 4+&y  
*/ 3MNhH  
public void sort(int[] data) { 'Qm` A=  
int temp; 4e=/f,o1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,Y+r<;  
} Ss"|1]acP  
} 8>C; >v  
} .b =M5JsyV  
b*I&k":  
} YQN]x}:E+4  
 l 'AK  
冒泡排序: F/Rng'l  
@-)<|orU4  
package org.rut.util.algorithm.support; \iFMU#  
?aK'OIo  
import org.rut.util.algorithm.SortUtil; 9@KUqoX  
Hs:4I  
/** {:};(oz)f  
* @author treeroot k| _$R?  
* @since 2006-2-2 sD LVYD  
* @version 1.0 Hmz=/.$  
*/ 9;E%U2T7  
public class BubbleSort implements SortUtil.Sort{ 1g~Dm}m  
m.\ >95!  
/* (non-Javadoc) /3CHE8nSh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t,--V|7-  
*/ jMm_A#V>p  
public void sort(int[] data) { N<#S3B?.  
int temp; 2*~JMbm  
for(int i=0;i for(int j=data.length-1;j>i;j--){ }m=t zHB*  
if(data[j] SortUtil.swap(data,j,j-1); p56KS5duI.  
} Jcwh|w9D8  
} g|&.v2 '  
} J8sJ~FnUj  
} l _kg3e4  
u4b3bH9U  
} LY@1@O2@  
hj^G} 4  
选择排序: E5,%J  
s)=!2AY  
package org.rut.util.algorithm.support; -Z`(? k  
6=Y3(#Ddt  
import org.rut.util.algorithm.SortUtil; c]AKeq]  
mhHA!:Y  
/** 8! |.H p  
* @author treeroot EmtDrx4!(f  
* @since 2006-2-2 U~u6}s]:  
* @version 1.0 >:Rt>po8|w  
*/ z")3_5Br  
public class SelectionSort implements SortUtil.Sort { p0}+071o%  
{#dp-5V  
/* 8k+q7  
* (non-Javadoc) u%+6Mp[E  
* jQ.>2-;H9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !uj!  
*/ 8!`7-  
public void sort(int[] data) { UA69_E{JCH  
int temp; )#b}qc#`  
for (int i = 0; i < data.length; i++) { _/QKWk&j  
int lowIndex = i; *([0"  
for (int j = data.length - 1; j > i; j--) { )V[w:=*  
if (data[j] < data[lowIndex]) { h3UZ|B0=  
lowIndex = j; Gx(KN57D  
} wf~5lpI[  
} xWenKY,  
SortUtil.swap(data,i,lowIndex); }AMYU>YE=  
} %8Z|/LGg  
} |: 7EJkKZ  
FT*yso:X/  
} 6SW|H"!!  
r)9i1rI+  
Shell排序: _g^K$+F'}  
CI~hmL0  
package org.rut.util.algorithm.support; wS F!Xx0  
~_dBND?  
import org.rut.util.algorithm.SortUtil; K]H"qG.K  
z. _C*c  
/** d+YVyw.z  
* @author treeroot Q8}TNJsU  
* @since 2006-2-2 \jF" nl  
* @version 1.0 vc>^.#7   
*/ %T&&x2p^=?  
public class ShellSort implements SortUtil.Sort{ uJ|5 Ve  
IEIxjek  
/* (non-Javadoc) UZ4tq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (x1"uy7_  
*/ M/8#&RycQ  
public void sort(int[] data) { ,%)WT>  
for(int i=data.length/2;i>2;i/=2){ *hk{q/*Qw  
for(int j=0;j insertSort(data,j,i); k2_6<v Z  
} MQ9M%>  
} ,z0~mN  
insertSort(data,0,1); vjs|!O=oH  
} gNEzlx8A  
T9<H%iF  
/** ;i-D~Np|  
* @param data ^huBqEs  
* @param j VuO)  
* @param i HonAK  
*/ "EOk^1,y  
private void insertSort(int[] data, int start, int inc) { eSvc/CU  
int temp; ~u?x{[  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :r vO8.\  
} ) <}VP&:X  
} hIzPy3  
} %~B)~|h  
Tg <>B  
} QRg"/62WCD  
/\3XARt  
快速排序: `F- Dd4B  
\K_!d]I {  
package org.rut.util.algorithm.support; T,xVQ4J?  
fr,CH{Uq  
import org.rut.util.algorithm.SortUtil; VxPTh\O*[  
Y00i{/a 8  
/** Ivt)Eg  
* @author treeroot ?VOs:sln  
* @since 2006-2-2 nI|Lx`*v  
* @version 1.0 =An Z>6  
*/ c~0VNuN  
public class QuickSort implements SortUtil.Sort{ eHnei F  
"u,~yxYWl  
/* (non-Javadoc) 5EV8zf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qs8K jG@  
*/ Be14$7r  
public void sort(int[] data) { {Gb)Et]<  
quickSort(data,0,data.length-1); gk_Xu  
} zM8/ s96h  
private void quickSort(int[] data,int i,int j){ ?^G$;X7B  
int pivotIndex=(i+j)/2; . f.j >  
file://swap ZAnO$pA  
SortUtil.swap(data,pivotIndex,j); 4Ow Vt&  
@|\s$L  
int k=partition(data,i-1,j,data[j]); gE6y&a  
SortUtil.swap(data,k,j); *NwKD:o  
if((k-i)>1) quickSort(data,i,k-1); (W}i287  
if((j-k)>1) quickSort(data,k+1,j); !+*?pq  
=DF@kR[CH"  
}  1+i  
/** 2fL88/'  
* @param data I8-&.RE  
* @param i QLpTz"H  
* @param j *>&N t  
* @return K_lCDiqG  
*/ 0R%uVJG  
private int partition(int[] data, int l, int r,int pivot) { On96N|  
do{ S}xDB  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (?&_6B.*  
SortUtil.swap(data,l,r); ! 4^L $  
} +DV6oh  
while(l SortUtil.swap(data,l,r); C)3$";$5)  
return l; C"m0"O>  
} tpx3:|  
<,]CVo  
} n]ppO U|[  
c&I,eds  
改进后的快速排序: 4iPua"8  
B|q3;P  
package org.rut.util.algorithm.support; ! ,(bXa\^  
GE3U0w6WbK  
import org.rut.util.algorithm.SortUtil; Y;/=3T7An  
IDk:jO  
/** OTFu4"]M  
* @author treeroot Ci#5@Q9#w  
* @since 2006-2-2 S>ylAU;N  
* @version 1.0 iDkWW  
*/ `bi_)i6Low  
public class ImprovedQuickSort implements SortUtil.Sort { fPk9(X;G!p  
oj4)7{  
private static int MAX_STACK_SIZE=4096; }HQT@&=  
private static int THRESHOLD=10; Q]?J%P.  
/* (non-Javadoc) +KwF U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e[ k;SSs  
*/ oWaIjU0  
public void sort(int[] data) { HS&uQc a  
int[] stack=new int[MAX_STACK_SIZE]; uF.\dY\xv  
r0$9c  
int top=-1; 4oa P"T@6  
int pivot; Mp @(/  
int pivotIndex,l,r; ,E8>:-boL  
Y"\T*lKa  
stack[++top]=0; 9q@YE_ji  
stack[++top]=data.length-1; (XIq?c1T  
#]\G*>{  
while(top>0){ zl8\jP  
int j=stack[top--]; I(kIHjV|  
int i=stack[top--]; rbWFq|(_  
=^}2 /vA  
pivotIndex=(i+j)/2; jlZNANR3  
pivot=data[pivotIndex]; 7MfvU|D[d/  
Jl}7]cVq#  
SortUtil.swap(data,pivotIndex,j); ~=Sr0+vV  
}=)"uv  
file://partition 93,ExgFt  
l=i-1; ,+{ 43;a  
r=j; 2/WXdo  
do{ ? 'nMZ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A O]e^Q  
SortUtil.swap(data,l,r); Y6Q6--P  
} XoOe=V?I )  
while(l SortUtil.swap(data,l,r); c Ix(;[U  
SortUtil.swap(data,l,j); fW`F^G1R  
J0o[WD$A x  
if((l-i)>THRESHOLD){ U[u6UG  
stack[++top]=i; tL|Q{+i yE  
stack[++top]=l-1; W[ DB !ue  
} X?a67qL  
if((j-l)>THRESHOLD){ umYdr'p!v  
stack[++top]=l+1; S([De"y  
stack[++top]=j; F!'"mU<f  
} mZ%\`H+  
SuSZ,>  
} d?qz7#kc  
file://new InsertSort().sort(data); V00zk`PH  
insertSort(data); 4|UIyDt8  
} Pr"ESd>Y  
/** <Do89  
* @param data "tIx$?I  
*/ OYkd?LN  
private void insertSort(int[] data) { 1OKJE(T  
int temp; ~<3yTl>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |,crQ'N'  
} }W J`q`g  
} @(L|  
} _L ].n)b  
Ig2VJs;  
} ~Hf,MLMdTf  
|ipppE=  
归并排序: _4w%U[GT,  
J/ ~]A1fP6  
package org.rut.util.algorithm.support; }I0^nv1  
6W o7q\"  
import org.rut.util.algorithm.SortUtil; j- -#vEW  
&-9D.'WzP  
/** >Ww F0W9?  
* @author treeroot 78"W ~`8  
* @since 2006-2-2 VrG|/2  
* @version 1.0 s&l[GKR  
*/ TnrMR1Zx  
public class MergeSort implements SortUtil.Sort{ JP]K\nQx'  
H+Wd#7l,  
/* (non-Javadoc) ))vwofkw4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l%O-c}X  
*/ e# DAa  
public void sort(int[] data) { A{k@V!A%  
int[] temp=new int[data.length]; {u5@Yp  
mergeSort(data,temp,0,data.length-1); DX|kO  
} cW2:D$Pe  
,$Mw/fA  
private void mergeSort(int[] data,int[] temp,int l,int r){ :d;5Q\C`  
int mid=(l+r)/2; 2t'&7>Ys{  
if(l==r) return ; 4#T'Fy].  
mergeSort(data,temp,l,mid); ,^(T^ -  
mergeSort(data,temp,mid+1,r); 3y!CkJKv  
for(int i=l;i<=r;i++){ YY9q'x,w  
temp=data; (.cT<(TB  
} UTz;Sw?~hw  
int i1=l; U8d  wb  
int i2=mid+1; S70ERRk  
for(int cur=l;cur<=r;cur++){ Co M8  
if(i1==mid+1) l40$}!!<  
data[cur]=temp[i2++]; 6 eBQ9XV  
else if(i2>r) LLMkv!%D  
data[cur]=temp[i1++]; ETIf x)B-  
else if(temp[i1] data[cur]=temp[i1++]; X$aMf &x  
else )c*~Y=f  
data[cur]=temp[i2++]; <5.{+!BM  
} ` mi!"pmw  
} m-:k]9I  
Oj2[(7 mO/  
} (8{Z@  
(]JJ?aAF  
改进后的归并排序: T'XRl@  
OCd[P1Y]  
package org.rut.util.algorithm.support; SaNx;xgi  
@1pdyKK  
import org.rut.util.algorithm.SortUtil; B3D4fYQ  
J]%P fWV  
/** ^a]:GPc  
* @author treeroot nL$tXm-x  
* @since 2006-2-2 Au {`o xD  
* @version 1.0 >TE&myZ?*  
*/ biJU r^n  
public class ImprovedMergeSort implements SortUtil.Sort { %ug`dZ/  
t :_7 O7  
private static final int THRESHOLD = 10; wNPZ[V:  
|(/"IS]  
/* F'K{=  
* (non-Javadoc) *6h.#$\  
* j6\{j#q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I%ez_VG  
*/ Lh+^GQ  
public void sort(int[] data) { ]KfHuYjM  
int[] temp=new int[data.length]; ,Ya&M@^Z  
mergeSort(data,temp,0,data.length-1); pD]Ry" ZG  
} q*T+8 O  
cc>h=%s`  
private void mergeSort(int[] data, int[] temp, int l, int r) { +5Mx0s(5  
int i, j, k; ELm#  
int mid = (l + r) / 2; hZpFI?lqc\  
if (l == r) []@Mk  
return; zIL.R#|D=  
if ((mid - l) >= THRESHOLD) {3;4=R3  
mergeSort(data, temp, l, mid); ScI9.{  
else f; 22viE  
insertSort(data, l, mid - l + 1); ~6OdPD  
if ((r - mid) > THRESHOLD) NENbr$,G  
mergeSort(data, temp, mid + 1, r); {\%x{  
else .VI2V-Q  
insertSort(data, mid + 1, r - mid); Un<~P@T%  
'HC4Q{b`  
for (i = l; i <= mid; i++) { 4fN<pG,  
temp = data; jQc0_F\  
} ?O_;{(F_  
for (j = 1; j <= r - mid; j++) { H1X6f7`  
temp[r - j + 1] = data[j + mid]; Y-Z.AA,  
} l-mUc1.S  
int a = temp[l]; q3;HfZ  
int b = temp[r]; h7*m+/O  
for (i = l, j = r, k = l; k <= r; k++) { |HL1.;1  
if (a < b) { IE|$>q0Z  
data[k] = temp[i++]; ]6%| L  
a = temp; 3A+d8fwi  
} else { uv@4/M`  
data[k] = temp[j--]; OaEOk57%de  
b = temp[j]; D3_,2  
} Q=+KnE=h  
} SDot0`s>  
} Uzc`,iV$  
rod{77  
/** 8U-}%D<a  
* @param data 1|zo -'y  
* @param l {6n B83BB  
* @param i X&K1>dgWP  
*/ $FD0MrB_+  
private void insertSort(int[] data, int start, int len) { N[AX29  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); . [C ~a  
} IQR?n}ce  
} wc ^z9y  
} S3 &L  
} TEY%OI zU+  
M*t{?o/t;  
堆排序: d/"e3S1  
7VR+EV  
package org.rut.util.algorithm.support; .~Td /o7  
A$ s4Q0Mf  
import org.rut.util.algorithm.SortUtil; vmL0H)q  
ba ,2.|  
/** dfk=%lZYd9  
* @author treeroot :sJVklK  
* @since 2006-2-2 kMUjSa~\  
* @version 1.0 65g\WB+/  
*/ Zj$U _  
public class HeapSort implements SortUtil.Sort{ S25&UwUw  
c$>Tfa'H  
/* (non-Javadoc) Z5+qb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) './s'!Lj  
*/ `|I h"EZ  
public void sort(int[] data) { Lg-Sxz}P!  
MaxHeap h=new MaxHeap(); ]81P<Y(7  
h.init(data); 'b%S3)}  
for(int i=0;i h.remove(); h\jwXMi,tj  
System.arraycopy(h.queue,1,data,0,data.length); z`'{l {  
} @'dtlY5;  
I>:M1Yc0  
private static class MaxHeap{ f~t*8rG~m  
WOquG  
void init(int[] data){ RHeql*`  
this.queue=new int[data.length+1]; bz,C%HFA  
for(int i=0;i queue[++size]=data; !}<Y^="  
fixUp(size); FL- sXg  
} ,|}Pof=]xk  
} &_G^=Nc,H  
A=Dzd/CUO  
private int size=0; HPT$)NeNc  
GXf"a3  
private int[] queue; Eufw1vDa  
u0\?aeg`  
public int get() { R{u/r%  
return queue[1]; }fdo Aid~  
} L-vy,[9)[*  
)nQA) uz  
public void remove() { d/N&bTg:  
SortUtil.swap(queue,1,size--); h9$Ov`N(%  
fixDown(1); 3y<;fdS7  
} 6f(K'v  
file://fixdown fn]f$n*`  
private void fixDown(int k) { yKgA"NaM  
int j; % ,1bh  
while ((j = k << 1) <= size) { =UT*1-yh R  
if (j < size %26amp;%26amp; queue[j] j++; d%8hWlffz  
if (queue[k]>queue[j]) file://不用交换 CB:G4VqOT  
break; ?u/RQ 1  
SortUtil.swap(queue,j,k); ZXlW_CGO  
k = j; }y;s(4  
} 4:WN-[xX  
} 3%p^>D\  
private void fixUp(int k) { 4At{(fw W  
while (k > 1) { OLg=kF[[  
int j = k >> 1; @FU9!  
if (queue[j]>queue[k]) K`Vi5hR~c  
break; x(ue |UG  
SortUtil.swap(queue,j,k); /J9|.];%r  
k = j; unY+/p $  
} /-4rcC  
} 2guWWFS  
2M1}`H\  
} "Y-_83  
Yi:@>A<#  
} B"P-h^oiV  
%a$ l%8j&  
SortUtil: m:_'r"o  
K*NCIIDh  
package org.rut.util.algorithm; s"gNHp.oF  
mW- 4  
import org.rut.util.algorithm.support.BubbleSort; AXFQd@#  
import org.rut.util.algorithm.support.HeapSort; ^~XsHmcQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; }V:ZGP#!'  
import org.rut.util.algorithm.support.ImprovedQuickSort; SoC3)iqv/  
import org.rut.util.algorithm.support.InsertSort; `\Z7It?aDs  
import org.rut.util.algorithm.support.MergeSort; 7|bzopLJk  
import org.rut.util.algorithm.support.QuickSort; <#HQU<  
import org.rut.util.algorithm.support.SelectionSort; ROqz$yY  
import org.rut.util.algorithm.support.ShellSort; VI_8r5o  
}04 EM  
/** G6@XRib3  
* @author treeroot :rR)rj'  
* @since 2006-2-2 j%%& G$Tfu  
* @version 1.0 I5Vp%mCY  
*/ T8'm{[C  
public class SortUtil { &![3{G"+>l  
public final static int INSERT = 1; ^V,?n@c!  
public final static int BUBBLE = 2; JiH^N!  
public final static int SELECTION = 3; p^J=*jm)x  
public final static int SHELL = 4; ~FCkr&Ky3  
public final static int QUICK = 5; \7]0vG  
public final static int IMPROVED_QUICK = 6; 0;6eSmF  
public final static int MERGE = 7; l4: B(  
public final static int IMPROVED_MERGE = 8; /h6K"w=='!  
public final static int HEAP = 9; U4s)3jDw  
cCa+UTxaJ  
public static void sort(int[] data) { *,az`U  
sort(data, IMPROVED_QUICK); b5!D('w>]  
} .! 'SG6 q  
private static String[] name={ CmP_9M?ce  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Q^trKw~XNy  
}; rHngYcjR  
oyC5M+shP9  
private static Sort[] impl=new Sort[]{ !pT i.3  
new InsertSort(), mZ_643|  
new BubbleSort(), 6 rp(<D/_  
new SelectionSort(), F .h A.E  
new ShellSort(), v=8sj{g3,3  
new QuickSort(), HAKB@h)  
new ImprovedQuickSort(), dQ#$(<v[  
new MergeSort(), j;TXZ`|(  
new ImprovedMergeSort(), yX7P5c.   
new HeapSort() kD*r@s]=  
}; .30eO_msK  
1buVV]*~  
public static String toString(int algorithm){ tXXnHEz  
return name[algorithm-1]; -}x( MZ  
} GUDz>(  
! mb<z^>5  
public static void sort(int[] data, int algorithm) { ^ jYE4gHM  
impl[algorithm-1].sort(data); SB x<-^  
} ks19e>'5Q  
)JA9bR <  
public static interface Sort { y?Cq{(  
public void sort(int[] data); 2r^G;,{  
} ;X;q8J^_K_  
" rVf{  
public static void swap(int[] data, int i, int j) { X:2)C-l?  
int temp = data; &9OnN<mT1  
data = data[j]; _<^mi!Y  
data[j] = temp; JfLoGl;p m  
} T;C0t9Yew  
} ]L6[ vJHx  
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