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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。 YI`BA`BQ8  
插入排序: /} h"f5  
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package org.rut.util.algorithm.support; <8YvsJ  
ah,"c9YX  
import org.rut.util.algorithm.SortUtil; wk{]eD%  
/** LB[?kpy  
* @author treeroot { `xC~B h  
* @since 2006-2-2 [KCR@__  
* @version 1.0 ^+0>,-)F  
*/ ~Orz<%k.  
public class InsertSort implements SortUtil.Sort{ X4+H8],)  
SbQ:vAE*ho  
/* (non-Javadoc) V(g5Gn?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K=r~+4F  
*/ 9m\Yi  
public void sort(int[] data) { uKj(=Rqq  
int temp;  d^zuo  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wEN[o18{  
} m77 !i>V)  
} G:@1.H`  
} sk*vmxClY  
i|xz  
} `sg W0Uf  
nwzyL`kF  
冒泡排序: |>1#)cONW  
Cs\jPh;"  
package org.rut.util.algorithm.support; ;/kmV~KG  
H}q$6W E  
import org.rut.util.algorithm.SortUtil; -8R SE4)  
uvw1 _j?  
/** @yC3a)=$L  
* @author treeroot gI"cZ h3}  
* @since 2006-2-2 x 0#u2j?zj  
* @version 1.0 3_ .%NgES|  
*/ ~)zxIO!  
public class BubbleSort implements SortUtil.Sort{ r8!pk~R5]  
hc|#JS2H@y  
/* (non-Javadoc) _g-0"a{-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W Q9Q:F2  
*/ @= =)  
public void sort(int[] data) { n&DBMU  
int temp; sZ7~AJ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ j)#yyK{k2s  
if(data[j] SortUtil.swap(data,j,j-1); 7j29wvSp5  
} 6urU[t1  
} 6'.)z ,ts  
} ((<\VQ,>(  
} J1Az+m  
)o-mM tPj  
} rO YD[+  
Pjxj$>&;*j  
选择排序: $RunGaX!=N  
KD\sU6  
package org.rut.util.algorithm.support;  Mz+vT0  
vp9wRGd  
import org.rut.util.algorithm.SortUtil; 7\ZSXQy1W  
g_A#WQyh\'  
/** 2m} bddS  
* @author treeroot e,Y<$kPV  
* @since 2006-2-2 .}uri1k"@k  
* @version 1.0 W$`#X  
*/ U0iV E+)Bt  
public class SelectionSort implements SortUtil.Sort { "@|rU4Y  
t;-F]  
/* ZHlHnUo  
* (non-Javadoc) ~B? Wg!  
* d @ l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p L^3*B.Nr  
*/ 4%|r$E/TQ  
public void sort(int[] data) { Hs_7oy|P  
int temp; uBn35%  
for (int i = 0; i < data.length; i++) { z@V9%xF-3  
int lowIndex = i; t* p%!xsH  
for (int j = data.length - 1; j > i; j--) { -yTIv* y  
if (data[j] < data[lowIndex]) { ,oPxt  
lowIndex = j; |sl^4'Ghc  
} 3+vVdvu%  
} ^,)nuU y  
SortUtil.swap(data,i,lowIndex); bI_MF/r''  
} 7+IRI|d  
} 9\T9pjdZE  
Plhakngj  
} @K}h4Yok  
%o{IQ4Lz#  
Shell排序: TCIbPs E  
@8+v6z  
package org.rut.util.algorithm.support; "WO0 rh`  
?STO#<a  
import org.rut.util.algorithm.SortUtil; ]0MuXiR  
p=zTY7L  
/** DsD? &:  
* @author treeroot 0IP0z il  
* @since 2006-2-2 ?Zk;NL9  
* @version 1.0 @*- 6DG-f  
*/ R@/"B?`(f  
public class ShellSort implements SortUtil.Sort{ >3&V"^r(|  
e&Q w\Ze  
/* (non-Javadoc) &\Lu}t7Ru  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZLPj1L  
*/ c@)?V>oe  
public void sort(int[] data) { B7YE+  
for(int i=data.length/2;i>2;i/=2){ & 9 c^9<F  
for(int j=0;j insertSort(data,j,i); 065=I+Vo  
} x5Fo?E  
} zA:q/i  
insertSort(data,0,1); <[K)PI  
} m|t\w|B2  
*[BtW5 6-  
/** P=\Hi.]%  
* @param data v-^tj}jA  
* @param j |.&GmP  
* @param i t5u#[*  
*/ wu &lG!#  
private void insertSort(int[] data, int start, int inc) { VeZd\Oe  
int temp; *!{&n*N  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T:9M|mD  
} bZK^q B  
} pjFj{  
} q^n LC6q  
;Ru[^p.{  
} Y6v#0pT  
\Sv|yQUT  
快速排序: (TO<SY3AB  
W:6#0b"_#  
package org.rut.util.algorithm.support; 0>]&9'cn  
-mmQ]'.0  
import org.rut.util.algorithm.SortUtil; ,8d&uR}x  
64`l?F  
/** C>mFylN  
* @author treeroot E AKW^'D  
* @since 2006-2-2 C3~~h|:  
* @version 1.0 3Co1bY:  
*/ Msfxce  
public class QuickSort implements SortUtil.Sort{ 2tCw{Om*  
VB T 66kV  
/* (non-Javadoc) Aayd3Ph0%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1$6 u  
*/ {;zHkmx  
public void sort(int[] data) { o@]n<ZYo  
quickSort(data,0,data.length-1); _x#y   
} TXS`ey  
private void quickSort(int[] data,int i,int j){ 3>73s}3  
int pivotIndex=(i+j)/2; ]` A*7  
file://swap VM\\.L  
SortUtil.swap(data,pivotIndex,j); n<<arO"cv  
'zT7$ .L  
int k=partition(data,i-1,j,data[j]); 8Q{9AoQ3'  
SortUtil.swap(data,k,j); &0:Gj3`  
if((k-i)>1) quickSort(data,i,k-1); M"u=)CT  
if((j-k)>1) quickSort(data,k+1,j); [KbLEMrPba  
:(tKc3z  
} ~ b66 ;  
/** 8*&73cp  
* @param data )  LTV+?  
* @param i ko'V8r `V  
* @param j ^P/OHuDL  
* @return  w}t}Sh  
*/ (x.qyYEoI  
private int partition(int[] data, int l, int r,int pivot) { Fi\) ka\u  
do{ NLYf   
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x2aG5@<3  
SortUtil.swap(data,l,r); -f1}N|hy  
} Gl45HyY_  
while(l SortUtil.swap(data,l,r); I,,SR"  
return l; 5J&Gc;  
} qe(C>qjMbG  
XFl&(I4tB  
} fQg^^ZXe"  
zxx9)I@?A  
改进后的快速排序: @T>^ >  
@,6*yyO  
package org.rut.util.algorithm.support; U2vb&Qu/  
fb^R3wd$ff  
import org.rut.util.algorithm.SortUtil; ;E5XH"L\  
T g3MPa#g  
/** &TrL!9FtJ  
* @author treeroot M(C}2.20  
* @since 2006-2-2 )`\Q/TMl5  
* @version 1.0 G{Ju2HY  
*/ 0Q,Tcj  
public class ImprovedQuickSort implements SortUtil.Sort { gSyBoY  
0/fZDQH  
private static int MAX_STACK_SIZE=4096; v$(Z}Hg  
private static int THRESHOLD=10; {TMng&  
/* (non-Javadoc) qs_cC3"=%=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uGW#z_{(n  
*/ B> \q!dX3  
public void sort(int[] data) { C#1'kQO  
int[] stack=new int[MAX_STACK_SIZE]; F{.g05^y  
xXmlHo<D  
int top=-1; I69Z'}+qz  
int pivot; /l3Oi@\  
int pivotIndex,l,r; Gi$\th,  
"[7'i<,AI  
stack[++top]=0; \VW":+  
stack[++top]=data.length-1; g/P1lQ)  
*`/4KMrq  
while(top>0){ V$Oj@vI  
int j=stack[top--]; U7f o4y1}  
int i=stack[top--]; `zl,|}u)  
g}a+%Obb  
pivotIndex=(i+j)/2; ?@`5^7*  
pivot=data[pivotIndex]; $*P +   
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SortUtil.swap(data,pivotIndex,j); lU&2K$`  
9(vp`Z8B4  
file://partition "SWL@}8vx  
l=i-1; ,nPnH1vb  
r=j; n-qle5sj  
do{ YZnFU( j  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -y?ve od#  
SortUtil.swap(data,l,r); 0QrRG$<4X  
} R3)ccom  
while(l SortUtil.swap(data,l,r); hjk]?MC  
SortUtil.swap(data,l,j); ,kYX|8SO  
*UN*&DmF  
if((l-i)>THRESHOLD){ ^"vmIC.h  
stack[++top]=i; Y(EF )::  
stack[++top]=l-1; FJ?]|S.?,  
} 8. +f@wv  
if((j-l)>THRESHOLD){ N}{V*H^0QU  
stack[++top]=l+1; T<y fpUzX  
stack[++top]=j; ~G6xk/+n-m  
} <pS#wTsN4%  
wnLpf  
} bmKvvq  
file://new InsertSort().sort(data); k][{4~z  
insertSort(data); r8czDc),b  
} ybv< 1  
/** YWV)C?5x&  
* @param data h2:TbQ  
*/ Bqk+ne  
private void insertSort(int[] data) { np}0O  X  
int temp; ?hIDyM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Tgi7RAY  
} 5N ;xo??  
} L6!Hv{ijn  
} F4Cq85#  
16.?4 5  
} 4U'sBaY!K  
zqI|VH  
归并排序: 7/BjWU5*  
I!K-* AB  
package org.rut.util.algorithm.support; G'nSnw  
0XyPG  
import org.rut.util.algorithm.SortUtil; I\j-  
Zny9TP  
/** `7V1 F.\  
* @author treeroot >^<;;8Xh  
* @since 2006-2-2 #Wb4*  
* @version 1.0 ~52'iI)Mw  
*/ 0 EA3> $;  
public class MergeSort implements SortUtil.Sort{ v"Ryg]^_  
\]\GDpu[  
/* (non-Javadoc) !Ow M-t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X;vU z  
*/ 8hyX He  
public void sort(int[] data) { [+}0K{(O=  
int[] temp=new int[data.length]; UKB/>:R  
mergeSort(data,temp,0,data.length-1); +9<:z\B|  
} X"HVK+  
]Al)>  
private void mergeSort(int[] data,int[] temp,int l,int r){ |B^Picu  
int mid=(l+r)/2; Y[>`#RhP  
if(l==r) return ; 4)L};B=  
mergeSort(data,temp,l,mid); PBiA/dG[;  
mergeSort(data,temp,mid+1,r); 6bf!v  
for(int i=l;i<=r;i++){ ~ySsv  
temp=data; V;~\+@  
} Lo}/k}3Sx  
int i1=l; -h8Z@r~a/  
int i2=mid+1; 6D{70onY+  
for(int cur=l;cur<=r;cur++){ uX1{K%^<TW  
if(i1==mid+1) ,eqRI>,\  
data[cur]=temp[i2++]; X?`mYoe  
else if(i2>r) %Z*)<[cIE0  
data[cur]=temp[i1++]; aouYPxA`  
else if(temp[i1] data[cur]=temp[i1++]; wg:\$_Og  
else 2IkyC`  
data[cur]=temp[i2++]; :kjs: 6f]  
} e\*(F3r  
} '?X?'_3  
I0^oaccM  
} u:wijkx  
jOK !k  
改进后的归并排序: sY]pszjT  
3z"%ht~;  
package org.rut.util.algorithm.support; : 'jVA  
87+u` ~  
import org.rut.util.algorithm.SortUtil; ~)ysEZl  
PklJU:Pu\U  
/** 4 .(5m\s!  
* @author treeroot ~!%G2E!  
* @since 2006-2-2 <si cldz  
* @version 1.0 @;S)j!m`  
*/ !y2yS/  
public class ImprovedMergeSort implements SortUtil.Sort { #TeAw<2U  
'I2[} >mj2  
private static final int THRESHOLD = 10; ``rYzj_  
h 3  J&  
/* Q,ZV C  
* (non-Javadoc) n# FkgXP$  
* ._.Qf<7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yb:F,d-Ya  
*/ MY(51)*  
public void sort(int[] data) { Jt?`(H  
int[] temp=new int[data.length]; 8CvNcO;H0  
mergeSort(data,temp,0,data.length-1); m/,8\+  
} xZQyH  
{OS[0LB  
private void mergeSort(int[] data, int[] temp, int l, int r) { 'BVI^H4  
int i, j, k; 5T'v iG}%  
int mid = (l + r) / 2; b%VZPKA;  
if (l == r) ,}I m^~5  
return; -KqMSf&9  
if ((mid - l) >= THRESHOLD) 'loko#6  
mergeSort(data, temp, l, mid); /c7jL4oD  
else (^<skx>  
insertSort(data, l, mid - l + 1); =#&+w[4?&.  
if ((r - mid) > THRESHOLD) N)KN!!  
mergeSort(data, temp, mid + 1, r); kn&BGYt  
else ;YBk.} %  
insertSort(data, mid + 1, r - mid); 9h6siK(F  
`vf]C'  
for (i = l; i <= mid; i++) { C2DAsSw  
temp = data; m*KI'~#$%  
} U\[b qw  
for (j = 1; j <= r - mid; j++) { 4'N 4,3d$  
temp[r - j + 1] = data[j + mid]; )31xl6@  
} EKmn@S-&P  
int a = temp[l]; ;iUO1t)^  
int b = temp[r]; Go[anf  
for (i = l, j = r, k = l; k <= r; k++) { ~ D/1U)kt  
if (a < b) { b~TTz`HZ  
data[k] = temp[i++]; A[:(#iR5-E  
a = temp; fvA167\  
} else { pE.TG4  
data[k] = temp[j--]; r8o^8.  
b = temp[j]; ;9vY5CxzC  
} vOtILL6  
} > V >GiSni  
} TEC#owz  
}rWg ']  
/** DMKtTt[}  
* @param data JDO n`7!w  
* @param l +9# qNkP  
* @param i "`* >co6r  
*/ %e+*&Z',  
private void insertSort(int[] data, int start, int len) { F$O$Y[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &NI\<C7_Gw  
} }CrWmJu0  
} -L wz T  
} w@a|_?  
} ')(U<5y)  
acj-*I  
堆排序: 3u,B<  
[ -R[rF  
package org.rut.util.algorithm.support; `SS[[FT$>  
>U]KPL[%  
import org.rut.util.algorithm.SortUtil; TA~ZN^xI  
._&SS,I5VZ  
/** ++=jh6  
* @author treeroot Rq|]KAN  
* @since 2006-2-2 x l=i_  
* @version 1.0 Lo=n)cV1,  
*/ TT&%[A+  
public class HeapSort implements SortUtil.Sort{ :fnK`RnaQ  
6 8Vxy  
/* (non-Javadoc) iY5V4Gbo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vxrqUjK7  
*/ Mh}vr%0;)  
public void sort(int[] data) { _93:_L  
MaxHeap h=new MaxHeap(); 7~L_>7 ;  
h.init(data); -NA2+].  
for(int i=0;i h.remove(); ZCNO_g  
System.arraycopy(h.queue,1,data,0,data.length); *\`<=,H6<  
} ?5j~"  
$1k@O@F(4  
private static class MaxHeap{ <%=<9~e  
D@c@Dt  
void init(int[] data){ fC$@m_-KD  
this.queue=new int[data.length+1]; cPg{k}9Tvy  
for(int i=0;i queue[++size]=data; y QGd<(  
fixUp(size); 5>~D3?IAd  
} OLqynY  
} ^szi[Cj  
P5lk3Zg '  
private int size=0; U7-*]ik  
f#gV>.P;h\  
private int[] queue; 2_)gJ_kP  
@H}Hjg_>m  
public int get() { 9d!mGnl  
return queue[1]; nt%p@e!,  
} Hv%$6,/*v  
V$dhiP z  
public void remove() { ;f} ']2  
SortUtil.swap(queue,1,size--); !mUO/6Q hq  
fixDown(1); 4AKPS&k;  
} 9xFI%UOb#  
file://fixdown t~8H~%T>v  
private void fixDown(int k) { vD(:?M  
int j; :Vw{ l B  
while ((j = k << 1) <= size) { o3h>)4  
if (j < size %26amp;%26amp; queue[j] j++; Q2* ~9QkU  
if (queue[k]>queue[j]) file://不用交换 SEH[6W3  
break; =uR3|U(.|u  
SortUtil.swap(queue,j,k); (]zi;  
k = j; -oB=7+g  
} @0 [^SU?  
} S,vdd7Y  
private void fixUp(int k) { r Cb#E}  
while (k > 1) { (D{J|  
int j = k >> 1; z :u)@>6D1  
if (queue[j]>queue[k]) 0!tuUn  
break; rU 1Ri  
SortUtil.swap(queue,j,k); ACpecG  
k = j; QuC_sFP10  
} tjx|;m7  
} Z EvK  
)g KC}_h=  
} >B;KpO"+m  
]kF1~kXBe  
} + f:!9)C  
zU_ dk'&,  
SortUtil: %OP|%^2  
^sqzlF  
package org.rut.util.algorithm; M0`1o p1  
p 8Z;QH*  
import org.rut.util.algorithm.support.BubbleSort; #L57d  
import org.rut.util.algorithm.support.HeapSort; dqO]2d  
import org.rut.util.algorithm.support.ImprovedMergeSort; =r3g:j/>q  
import org.rut.util.algorithm.support.ImprovedQuickSort; =y`-:j\  
import org.rut.util.algorithm.support.InsertSort; 6;;2e> e  
import org.rut.util.algorithm.support.MergeSort; l+X\>,  
import org.rut.util.algorithm.support.QuickSort; d ,.=9  
import org.rut.util.algorithm.support.SelectionSort; ]EG8+K6  
import org.rut.util.algorithm.support.ShellSort; A8Km8"  
SwM=?<  
/** XWq"_$&LF  
* @author treeroot U]g9t<jD  
* @since 2006-2-2 P!!O~P  
* @version 1.0 kfZ(:3W$  
*/ 0|8cSE< i  
public class SortUtil { @a,=ApS"  
public final static int INSERT = 1; G2-0r.f  
public final static int BUBBLE = 2; m!=5Q S3Z  
public final static int SELECTION = 3; e>bARK<  
public final static int SHELL = 4; "bQi+@  
public final static int QUICK = 5; k;)mc+ ~+  
public final static int IMPROVED_QUICK = 6; w^,Xa  
public final static int MERGE = 7; WZh_z^rwn  
public final static int IMPROVED_MERGE = 8; y,w_x,m  
public final static int HEAP = 9; L!,@_   
=d]}7PO ~  
public static void sort(int[] data) { ( GoPXh  
sort(data, IMPROVED_QUICK); }}k*i0  
} 5u3KL A  
private static String[] name={ wSPmiJ/!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" i'\-Y]?[  
}; ?CcX>R-/  
D0z[h(m  
private static Sort[] impl=new Sort[]{ H({m1v ~R  
new InsertSort(), <FI*A+I4\  
new BubbleSort(), IreY8.FND  
new SelectionSort(), g yhy0  
new ShellSort(), dczSW ]%  
new QuickSort(), u]i%<Yy89  
new ImprovedQuickSort(), {7;QZk(  
new MergeSort(), %5nEyZOq  
new ImprovedMergeSort(), %~,Fe7#p  
new HeapSort() R.vOYzo  
}; _x^rHADp  
i ^2A:6}?  
public static String toString(int algorithm){ AlkHf]oB  
return name[algorithm-1]; N">#fYix  
} oK$Krrs0&  
XODp[+xEEt  
public static void sort(int[] data, int algorithm) { C ,|9VH  
impl[algorithm-1].sort(data); ?<Lm58p8  
} ]E'?#z.t  
k 8%@PC$  
public static interface Sort { xEeHQ7J  
public void sort(int[] data); 7AWq3i{  
} A}&YK,$5ED  
.rnT'""i<5  
public static void swap(int[] data, int i, int j) { rBy0hGx  
int temp = data; UBk:B  
data = data[j]; c;06>1=wP5  
data[j] = temp; OK YbEn#  
} %d%?\jVb  
} )VqPaKZl  
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