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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。 bXOM=T  
插入排序: l$j~p=S$F  
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package org.rut.util.algorithm.support; q {   
> O?<?  
import org.rut.util.algorithm.SortUtil; .YvIVQ  
/** 5655)u.N8  
* @author treeroot VhLfSN>W  
* @since 2006-2-2 q] pHD})O  
* @version 1.0 4@\$k+v  
*/ zi`q([  
public class InsertSort implements SortUtil.Sort{ l x5.50mI  
7_Te-i  
/* (non-Javadoc) ndDF(qHr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "AXgT[ O  
*/ G#`  
public void sort(int[] data) { fW=<bf  
int temp; >)NS U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'L7u`  
} =2( 52#pT  
} GY@:[u.&  
} ;AVIt!(L~V  
K/Y"oQ2  
} ( 1  
4noy!h  
冒泡排序: .Ow8C  
W+8s>  
package org.rut.util.algorithm.support; X!~y&[;[C  
bM?29cs  
import org.rut.util.algorithm.SortUtil; GSSmlJ`  
8EJP~bt  
/** |%|Vlu  
* @author treeroot L1G)/Vkw  
* @since 2006-2-2 ADOA&r[  
* @version 1.0 tN)t`1_j  
*/ ^+d]'$  
public class BubbleSort implements SortUtil.Sort{ AZik:C"Q  
\v=@'  
/* (non-Javadoc) lcEK&AtK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  LDU4 D  
*/ bFL2NH5  
public void sort(int[] data) { ' e!WZvr  
int temp; M6A0D+08  
for(int i=0;i for(int j=data.length-1;j>i;j--){ tmBt[  
if(data[j] SortUtil.swap(data,j,j-1); iyR"O1]  
} 9dAtQwGR"6  
} `S-%}eUv  
} {"$ [MYi:  
} CGK]i. N  
M,kO7g  
} $.w$x1  
]LxE#R5V  
选择排序: OJA_OqVp$K  
&M3KJ I0L  
package org.rut.util.algorithm.support; yDZm)|<.  
Fkpaou  
import org.rut.util.algorithm.SortUtil; ,gG RCp  
pJ1\@G  
/** 8_Uh h5[  
* @author treeroot m:0[as=  
* @since 2006-2-2 9(!AKKrr;  
* @version 1.0 hP.Km%C)0n  
*/ s3@mk\?qMe  
public class SelectionSort implements SortUtil.Sort { ]n"RPktx  
"LkBN0D  
/* Nr*X1lJ6  
* (non-Javadoc) w?8\9\ ;?  
* 2v@B7r4}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ] `q]n  
*/ kMLJa=]$  
public void sort(int[] data) { w 2U302TZ  
int temp; n`w]?bL  
for (int i = 0; i < data.length; i++) { B6Ajcfy  
int lowIndex = i; \k"CtzoX  
for (int j = data.length - 1; j > i; j--) { A*/8j\{n  
if (data[j] < data[lowIndex]) { ~UeTV?)  
lowIndex = j; XHJ` C\xR  
} h*1T3U$  
} R)SY#*Y  
SortUtil.swap(data,i,lowIndex); /!;v$es S  
} [\h?mlG?  
} PP!-*~F0Jr  
I#;dS!W"'  
} [ "3s  
zAklS 7L  
Shell排序: L{r4hL [  
kc=Z6(=  
package org.rut.util.algorithm.support; :IJ<Mmb  
xz.M'az\  
import org.rut.util.algorithm.SortUtil; 0T(+z)Ki  
id8QagJ  
/** =)g}$r &<  
* @author treeroot @b.,pwZF  
* @since 2006-2-2 4]p#9`j  
* @version 1.0 bnanTH9-  
*/ ?ILjt?X8  
public class ShellSort implements SortUtil.Sort{ nsVLgTbx  
[dFcxzM-N  
/* (non-Javadoc) $%31Gk[I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |=,jom  
*/ { m{nCl)y  
public void sort(int[] data) { {dRZ2U3  
for(int i=data.length/2;i>2;i/=2){ #Oj yUQ,  
for(int j=0;j insertSort(data,j,i); mPQT%%MF  
} wWf_d jd  
} j[w=pF,o  
insertSort(data,0,1); ?Y8hy|`  
} $X/'BCb  
oyk&]'>  
/** .b<W*4{j0H  
* @param data :wg=H  
* @param j 0#uB[N  
* @param i Qhc; Zl  
*/ _ gYj@ %  
private void insertSort(int[] data, int start, int inc) { _Ds,91<muQ  
int temp; y`7<c5zD  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Kj3Gm>B<y  
} Ac|dmu  
} %t!S 7UD  
} "sDs[Lcq  
\~Z%}$ =  
} 'yA/sZ  
V'Kied+  
快速排序: ~$[fG}C.K  
q^zG+FN  
package org.rut.util.algorithm.support; -D=Sj@G  
MVvBd3  
import org.rut.util.algorithm.SortUtil; j} ^3v #  
f#GMJ mCQs  
/** hjFht+j1  
* @author treeroot @>~\So|  
* @since 2006-2-2 C^B$_?  
* @version 1.0 +0Q +0:  
*/ ly6zz|c5  
public class QuickSort implements SortUtil.Sort{ <BZC5b6  
kMnG1K  
/* (non-Javadoc) ,5}w]6bCr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Z2"pV  
*/ #Cu$y8~as  
public void sort(int[] data) { 1>L'F8"  
quickSort(data,0,data.length-1); #Y'b?&b  
} 6\K\d_x  
private void quickSort(int[] data,int i,int j){ :@-yK8q's  
int pivotIndex=(i+j)/2; :p]e4|R  
file://swap uG6.(A1LM  
SortUtil.swap(data,pivotIndex,j); ~re}6-?  
|_8l9rB5ip  
int k=partition(data,i-1,j,data[j]); <1>6!`b4  
SortUtil.swap(data,k,j); rrj.]^E_~  
if((k-i)>1) quickSort(data,i,k-1); m}RZ )c  
if((j-k)>1) quickSort(data,k+1,j); Z~-N'Lt{  
t[X^4bZd  
} \**j \m   
/** !yrh50tD  
* @param data A]i!131{w|  
* @param i u SQ#Y^V_  
* @param j #\D 74$D  
* @return v;;3 K*c>  
*/ p0zC(v0*  
private int partition(int[] data, int l, int r,int pivot) { "Z,T%]  
do{ l,l6j";ohd  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c6c@ Xd V  
SortUtil.swap(data,l,r); o}/|"(K  
} VR&dy|5BO  
while(l SortUtil.swap(data,l,r); &V <f;PF(I  
return l; 3rMJC\h  
} #Mk: 4  
L)F4)VL  
} p?cc Bq  
g9VY{[ V  
改进后的快速排序: Jkbeh.  
a*.#Zgy:lK  
package org.rut.util.algorithm.support; 7[qL~BT+  
N5sVRL"7  
import org.rut.util.algorithm.SortUtil; \6?a  
L;j++^p  
/** L2EQ 9i'[  
* @author treeroot h{ix$Xn~  
* @since 2006-2-2 @d 7V@F0d  
* @version 1.0 C<(oaeQY  
*/ Fih pp<  
public class ImprovedQuickSort implements SortUtil.Sort { Ow4(1eE_  
Gvh"3|u ?z  
private static int MAX_STACK_SIZE=4096; 4E=v)C'  
private static int THRESHOLD=10; T9Juq6|  
/* (non-Javadoc) LOfw #+]d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <Oh i+a%6  
*/ r#)1/`h  
public void sort(int[] data) { -6NoEmb)\'  
int[] stack=new int[MAX_STACK_SIZE]; ZM v\j|{8  
-wg}X-'z0  
int top=-1; vMEN14;yH_  
int pivot; C&vi7Yx  
int pivotIndex,l,r; 8Ala31  
1eshuL  
stack[++top]=0; KHHYk>FR  
stack[++top]=data.length-1; ;xzaW4(3  
xt,Qn460;  
while(top>0){ -mRgB"8  
int j=stack[top--]; oU\7%gQ  
int i=stack[top--]; ;zD4 #7=  
}a~hd*-#  
pivotIndex=(i+j)/2; Q#H"Se  
pivot=data[pivotIndex];  w0=  
\#dacQ2E@  
SortUtil.swap(data,pivotIndex,j); jLVD37 P^  
=%IyR  
file://partition ^&1O:G*"  
l=i-1; |H_WY#  
r=j; n^ fUKi*;  
do{ b-  t  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `}=R  
SortUtil.swap(data,l,r); Qm[s"pM  
} W>d)(  
while(l SortUtil.swap(data,l,r); %ZWt 45A  
SortUtil.swap(data,l,j); vZTXvdF  
^-k"gLg  
if((l-i)>THRESHOLD){ &Q?@VN i  
stack[++top]=i; U6@c)_* <  
stack[++top]=l-1; Hh=fv~X  
} |>]@w\]  
if((j-l)>THRESHOLD){ Wmcd{MOS  
stack[++top]=l+1; r\ft{Z<P  
stack[++top]=j; /ugyUpyg  
} HFy9b|pjy  
1r$-Uh  
} iUR ij@  
file://new InsertSort().sort(data); wT" :  
insertSort(data); a!:N C  
} V)/J2-w  
/** ~r8<|$;  
* @param data 0@cIj ]  
*/ .4 WJk>g  
private void insertSort(int[] data) { T*C25l;w  
int temp; 4y7_P0}:B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7mMGH(  
} "*t6KXVaM  
} ZuGd{p$  
} %hYgG;22  
'_.qhsS  
} 4mo/MK&M:  
0N>K4ho6{  
归并排序: LPt9+sauf1  
oHx :["F  
package org.rut.util.algorithm.support; L7 }nmP>aR  
; o_0~l=-/  
import org.rut.util.algorithm.SortUtil; /ie&uW y  
~ `qWE u  
/** L@(. i  
* @author treeroot 0x-g0]  
* @since 2006-2-2 TxG@#" ^g}  
* @version 1.0 fS4W*P[B3  
*/ sS}:Od  
public class MergeSort implements SortUtil.Sort{ aHW34e@ebL  
\~,\|  
/* (non-Javadoc) *%KIq/V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Yr*x7!  
*/ d%'#-w'  
public void sort(int[] data) { B0Wf$ s^7t  
int[] temp=new int[data.length]; x0Loid\f  
mergeSort(data,temp,0,data.length-1); zG ='U  
} lF}@@e)N  
R~oJ-} iYX  
private void mergeSort(int[] data,int[] temp,int l,int r){ WC~;t4  
int mid=(l+r)/2; OmWEa  
if(l==r) return ; l6HtZ(  
mergeSort(data,temp,l,mid); ekyCZ8iai  
mergeSort(data,temp,mid+1,r); 4}; @QFT*  
for(int i=l;i<=r;i++){ (cLKhn@  
temp=data; &]n }fq  
} t(*n[7e  
int i1=l; 6Oy:5Ps8a  
int i2=mid+1; (X"5x]7]  
for(int cur=l;cur<=r;cur++){ P knOeW"j  
if(i1==mid+1) X|hYZR  
data[cur]=temp[i2++]; G`0O5G:1  
else if(i2>r) <9fXf*  
data[cur]=temp[i1++]; AEyD?^?  
else if(temp[i1] data[cur]=temp[i1++]; iiq `:G  
else :wIA.1bK}  
data[cur]=temp[i2++]; tz;o6,eb  
} F7JO/U^oU  
} 6L8nw+mEK  
:;e OhZ=_  
} 9S]pC?N]E  
U U_0@V<  
改进后的归并排序: ^vd$j-kjTP  
LvG$J*  
package org.rut.util.algorithm.support; }=bzUA`C  
Ly2,*\7  
import org.rut.util.algorithm.SortUtil; Y0,{fw<  
1sj7]G]`k  
/** $mM"C+dD  
* @author treeroot nb/q!8  
* @since 2006-2-2 #0<pRDXj  
* @version 1.0 2PSExK57  
*/ ' /HShS!d  
public class ImprovedMergeSort implements SortUtil.Sort { L1RD`qXu.  
ct-Bq  
private static final int THRESHOLD = 10; YM_[   
Q;3`T7  
/* fW2NYQP$:  
* (non-Javadoc) x!GDS>  
* g3kbsi7_:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gpxp8[ {  
*/ Q"FN"uQ}x  
public void sort(int[] data) { ivo><"Y(r  
int[] temp=new int[data.length]; IwnDG;+Ap  
mergeSort(data,temp,0,data.length-1); S,:!H@~B  
} 0<`qz |_h  
}XBF#BN  
private void mergeSort(int[] data, int[] temp, int l, int r) { cF15Mm2  
int i, j, k; I*a@_EO  
int mid = (l + r) / 2; TzaeE  
if (l == r) p+=zl`\=|  
return; =A6*;T"W  
if ((mid - l) >= THRESHOLD) kQ\ $0=6N9  
mergeSort(data, temp, l, mid); q$" u<  
else i_*yS+Z;  
insertSort(data, l, mid - l + 1); )'n@A%B  
if ((r - mid) > THRESHOLD) rogy`mh\r2  
mergeSort(data, temp, mid + 1, r); 5"nq h}5  
else vOlfyH>  
insertSort(data, mid + 1, r - mid); 4utwcXL  
$||WI}k3V  
for (i = l; i <= mid; i++) { p4z4[=-:  
temp = data; *]yrN`  
} ?+hEs =Xs  
for (j = 1; j <= r - mid; j++) { 4Y59^  
temp[r - j + 1] = data[j + mid]; g$GGo[_0  
} :} =lE"2  
int a = temp[l]; O/#3QK  
int b = temp[r]; 9~~NxWY%x  
for (i = l, j = r, k = l; k <= r; k++) { 1<m`38'  
if (a < b) { L-?ty@-i  
data[k] = temp[i++]; x*z&#[(0g!  
a = temp; Jt]RU+TB  
} else { QYo04`Rl  
data[k] = temp[j--]; :& Dv!z  
b = temp[j]; kfas4mkc  
} *.nSv@F  
} p}pRf@(`\  
} .S,E=  
kNWTM%u9  
/** 'M6+(`x  
* @param data bI0xI[#Q  
* @param l } F{s\qUt  
* @param i Ox J0. "  
*/ IWv5UmjN  
private void insertSort(int[] data, int start, int len) { #w|v.35%?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); eoww N>-2C  
} vE(]!CB  
} 7#j.y f4  
} 7 w,D2T  
} k ?KJ8  
=|AYT6z,  
堆排序: }d}sC\>U  
%N&.B  
package org.rut.util.algorithm.support; [#Apd1S_  
,TWlg  
import org.rut.util.algorithm.SortUtil; Rnwm6nu  
(Nc~l ^a  
/** Vc5>I_   
* @author treeroot P0>2}/;o  
* @since 2006-2-2 +:^l|6%}  
* @version 1.0 'v<v6vs  
*/ tUH?N/qn  
public class HeapSort implements SortUtil.Sort{ \VhG'd3k  
|qe;+)0>K  
/* (non-Javadoc) _(g0$vRP~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \}h   
*/ L<=Dl  
public void sort(int[] data) { A3tv'-e9  
MaxHeap h=new MaxHeap(); yC$m(Y12FN  
h.init(data); Q SF0?Puf  
for(int i=0;i h.remove(); rtAPkXJFM  
System.arraycopy(h.queue,1,data,0,data.length); >(P(!^[f  
} lv/im/]v  
RYCiO,+  
private static class MaxHeap{ j17h_ a;  
`Ns@W?  
void init(int[] data){ !{+CzUo@  
this.queue=new int[data.length+1]; 'MW%\W;  
for(int i=0;i queue[++size]=data; M *w{PjU  
fixUp(size); ( gg )?  
} AJB NM  
} sm'_0EUg  
E`_T_O=P  
private int size=0; B /uaRi%  
%C`P7&8m=O  
private int[] queue; P `@Rt  
]:LlOv$  
public int get() { A{;"e^a-^l  
return queue[1]; z<9C-  
} *;}xg{@  
D*2*FDGI  
public void remove() { 5QK%BiDlr  
SortUtil.swap(queue,1,size--); J/P[9m30[  
fixDown(1); "|I.j)  
} $=diG  
file://fixdown "9'3mmZm=?  
private void fixDown(int k) { N{bg-%s10i  
int j; KE"6I  
while ((j = k << 1) <= size) { Hre&a!U  
if (j < size %26amp;%26amp; queue[j] j++; AJ6l#j-  
if (queue[k]>queue[j]) file://不用交换 Kw"e4 a  
break; rzHBop-8  
SortUtil.swap(queue,j,k); N9|J\;fzT  
k = j; .?s jr4   
} o@gceZuk  
} Tk[]l7R~  
private void fixUp(int k) { (bv{1 7K  
while (k > 1) { &c!6e<o[p  
int j = k >> 1; vC>2%Zgf-  
if (queue[j]>queue[k]) W7 A!QS  
break; Ox#vW6;)  
SortUtil.swap(queue,j,k); uQc("F  
k = j; F-zIzzb&O  
} h[qZM  
} ?7wcv$K5  
-V;Y4,:c  
} ox`Zs2-a  
ppn  8  
} Wap4:wT  
{.kIC@^O  
SortUtil: }Fu1Y@M%  
uMva5o  
package org.rut.util.algorithm; ] / Nt  
v@Eb[7Kq/1  
import org.rut.util.algorithm.support.BubbleSort; 6M&ajl`o  
import org.rut.util.algorithm.support.HeapSort; PEEaNOk 1b  
import org.rut.util.algorithm.support.ImprovedMergeSort; %XN;S29d5W  
import org.rut.util.algorithm.support.ImprovedQuickSort; -h7ssf'u[  
import org.rut.util.algorithm.support.InsertSort; ]QR]#[Tn'  
import org.rut.util.algorithm.support.MergeSort; QAx9W%  
import org.rut.util.algorithm.support.QuickSort; xP~GpVhLF  
import org.rut.util.algorithm.support.SelectionSort; hd'fWFW N  
import org.rut.util.algorithm.support.ShellSort; *~ IHVU  
a]fFR~ OY  
/** OEl;R7aOB&  
* @author treeroot ?xUl_  
* @since 2006-2-2 )t+pwh!8  
* @version 1.0 kOo  Vqu  
*/ T8\@CV!  
public class SortUtil { mK$E&,OkA  
public final static int INSERT = 1; _4) t  
public final static int BUBBLE = 2; KRlJKd{  
public final static int SELECTION = 3; kJ"rRsK  
public final static int SHELL = 4; 1@{ov!YB]  
public final static int QUICK = 5; d+)LK~  
public final static int IMPROVED_QUICK = 6; ~l:Cj*6x8  
public final static int MERGE = 7; ssQ1u.x9  
public final static int IMPROVED_MERGE = 8; ^A&{g.0  
public final static int HEAP = 9; (*r2bm2FPO  
]T/%Bau  
public static void sort(int[] data) { yLLA:5Q1  
sort(data, IMPROVED_QUICK); U@).jpN  
} _ZavY<6  
private static String[] name={ !I1p`_(_7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =7TWzUCO#  
}; T rh t2Iv  
(BtU\f#d  
private static Sort[] impl=new Sort[]{ eCKm4l'BZ  
new InsertSort(), Eh;Ia6}  
new BubbleSort(), $:5h5Y#z  
new SelectionSort(), V0m1>{  
new ShellSort(), w uY-f4  
new QuickSort(), :_i1gY)  
new ImprovedQuickSort(), 5P #._Em  
new MergeSort(), T_2'=7  
new ImprovedMergeSort(), yn ofDGAf  
new HeapSort() uY)4y0  
}; 7Fpa%N/WL  
EwG+' nlE  
public static String toString(int algorithm){ ?MSZO]Q4+  
return name[algorithm-1]; [V_mF  
} /Z*$k{qIR&  
X~m57 b j  
public static void sort(int[] data, int algorithm) { :CM-I_6  
impl[algorithm-1].sort(data); 9$v\D3<Z  
} *-]k([wV  
i| cA)  
public static interface Sort { |%8t.Z  
public void sort(int[] data); vh"';L_*37  
} #]+BIr`  
_5n2'\] H`  
public static void swap(int[] data, int i, int j) { FEhBhv|m  
int temp = data; rMWvW(@@D  
data = data[j]; o/,%rA4  
data[j] = temp; 74 ptd,  
} 0P$19T N  
} < hy!B4  
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