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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。 %%-kUe  
插入排序: e3[QM  
W>@+H"pZ  
package org.rut.util.algorithm.support; =`/X Wem  
eyo)Su  
import org.rut.util.algorithm.SortUtil; iPkG=*Ip(%  
/** uCUBs(iD  
* @author treeroot _$Fi]l!f  
* @since 2006-2-2 [;X YT  
* @version 1.0 }1$8)zH  
*/ xds"n5  
public class InsertSort implements SortUtil.Sort{ +{#BQbx6  
]|732Z  
/* (non-Javadoc) zu;Yw=cM)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wx XVL"  
*/ VD=$:F]  
public void sort(int[] data) { *w%;$\^  
int temp; [KjQW/sb'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c9ghR0WM  
} xw?G?(WO  
} =jG3wf*  
} |E?%Cj^W  
ltD:w{PO]  
} ,2?C^gxt  
X^@d@xU4v  
冒泡排序: }B]FHpi  
pXQ&2s$  
package org.rut.util.algorithm.support; .{8lG^0U<  
{'vvE3iZ  
import org.rut.util.algorithm.SortUtil; xt`znNN  
|kVxrq  
/** GZ4{<QG  
* @author treeroot Riw>cVi~  
* @since 2006-2-2 TZHqn6  
* @version 1.0 MD1,KH+O  
*/ Fx.uPY.a  
public class BubbleSort implements SortUtil.Sort{ gjs-j{*  
/ Sp+MB9  
/* (non-Javadoc) pkM32v-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r+Z+x{  
*/ 95(VY)_6#A  
public void sort(int[] data) { S)[2\Z{**T  
int temp; X5<L  
for(int i=0;i for(int j=data.length-1;j>i;j--){ bqLv81V  
if(data[j] SortUtil.swap(data,j,j-1); _ !Ph1  
} ]_-$  
} wTTQIo 60  
} J7E/2Sl  
} 61C&vm  
p]aIMF_  
} |a"(Ds2U  
-,+JE0[  
选择排序: ~#j `+  
89 lPeFQ`  
package org.rut.util.algorithm.support; )<Yy.Z_:DC  
#u2PAZ@qd  
import org.rut.util.algorithm.SortUtil; "<.b=mN-  
Rdv"Aj:  
/** c76^x   
* @author treeroot [hiOFmMJZ-  
* @since 2006-2-2 P0 89Mh9  
* @version 1.0 ,f1+jC  
*/ dk3\~m%Pv  
public class SelectionSort implements SortUtil.Sort { dkVVvK  
Q2#)Jx\6!  
/*  $hN!DHz  
* (non-Javadoc) CiMN J  
* y\%4Dir  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t71 0sWh{  
*/ :)MZgW  
public void sort(int[] data) { rFmE6{4:p  
int temp; ph|3M<q6  
for (int i = 0; i < data.length; i++) { CP?\'a"Kt  
int lowIndex = i; m.4y=69 &  
for (int j = data.length - 1; j > i; j--) {   () SG  
if (data[j] < data[lowIndex]) { v=L^jw  
lowIndex = j; 7*4F-5G/  
} >%W"u` Q  
} I/@Xr  
SortUtil.swap(data,i,lowIndex); RnTPU`  
} O=+C Kx@  
} *]H ./a:1  
hz/5k%%UX  
} RSkpf94`  
r2hm`]\8M  
Shell排序: Su-+~` "  
i\ PN  
package org.rut.util.algorithm.support; j5RM S V  
D)!k  
import org.rut.util.algorithm.SortUtil; b>waxQxjS  
#}vcffgZ  
/** nGuF, 0j  
* @author treeroot WIhf*LF"  
* @since 2006-2-2 ao,LP,_  
* @version 1.0 W:tE ?Hu  
*/ GEvif4  
public class ShellSort implements SortUtil.Sort{ +^"|FtKhE  
VWNmqeP  
/* (non-Javadoc) E@N_~1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V&f3>#n\  
*/ AU7c = H:?  
public void sort(int[] data) { ]w')~yk  
for(int i=data.length/2;i>2;i/=2){ U}{r.MryFG  
for(int j=0;j insertSort(data,j,i); M`5^v0,C  
} Oi{jzP  
} eH6#'M4+\  
insertSort(data,0,1); TRQva8d?  
} &9O-!  
\C>I6{  
/** !X,=RR `zT  
* @param data q= tDMK'h  
* @param j `9F'mT#o/  
* @param i K1$Z=]a+  
*/ \"uR&D  
private void insertSort(int[] data, int start, int inc) { f"PApV9[  
int temp;  k&rl%P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }2{%V^D)r  
} , R]7{7$  
} UV:_5"-  
} RLIugz{IH  
d:j$!@o  
} O!|:ZMjF  
XBDlQe|>  
快速排序: O c" 2|X  
;1o"Oij  
package org.rut.util.algorithm.support; $w65/  
:|d3BuY  
import org.rut.util.algorithm.SortUtil; f:=?"MX7  
$A-b-`X  
/** mH8"k+k  
* @author treeroot =?/J.[)<*  
* @since 2006-2-2 \?}ZXKuJj  
* @version 1.0 0{jRXa-(  
*/ !e%#Zb MIo  
public class QuickSort implements SortUtil.Sort{ kdv>QZ  
2R)Y}*VX  
/* (non-Javadoc) le1'r>E$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vk$]$6l2  
*/ ANWa%%\T  
public void sort(int[] data) { Z3Vi il:  
quickSort(data,0,data.length-1); ~xA' -N/  
} )! OEa]  
private void quickSort(int[] data,int i,int j){ 6 .*=1P*?  
int pivotIndex=(i+j)/2; ty "k  
file://swap {=&pnu\  
SortUtil.swap(data,pivotIndex,j); ^6obxwVG  
0t<TZa]V  
int k=partition(data,i-1,j,data[j]); ni3^J5XW  
SortUtil.swap(data,k,j); V-)q&cbW]q  
if((k-i)>1) quickSort(data,i,k-1); iHR?]]RF  
if((j-k)>1) quickSort(data,k+1,j); ~s !+9\Fi  
\=nY&Ml  
} *VD-c  
/** ./[t'dgC  
* @param data z5Po,@W  
* @param i C:H9C  
* @param j B!9<c9/ P]  
* @return dhV =;'   
*/ _I75[W!  
private int partition(int[] data, int l, int r,int pivot) { UoBu0Rx  
do{ F|Ou5WD  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); PInU-"gG  
SortUtil.swap(data,l,r); ;Qw>&24h[  
} F_@PSA+  
while(l SortUtil.swap(data,l,r); p6>3 p  
return l; qex.}[  
} 3VcG /rf  
I]zCsT.  
} ) |*HkdF`  
:xv"m {8+  
改进后的快速排序: {E>kFeg  
yht_*7.lM  
package org.rut.util.algorithm.support; ;i\i+:=  
9.>v ;:vL  
import org.rut.util.algorithm.SortUtil; c7sW:Yzil  
T?Hs_u{  
/** P1)9OE  
* @author treeroot S_1R]n1/  
* @since 2006-2-2 $+ lc;N  
* @version 1.0 5a_1x|Fhi  
*/ k;q|pQ[  
public class ImprovedQuickSort implements SortUtil.Sort { Xul<,U~w6  
c"6<p5j!  
private static int MAX_STACK_SIZE=4096; ,7<5dIdZ  
private static int THRESHOLD=10; #dU-*wmJ  
/* (non-Javadoc) L`3 g5)V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =C u !  
*/ `WX @1]m  
public void sort(int[] data) { P!1y@R>Ln  
int[] stack=new int[MAX_STACK_SIZE]; 0~)cAKus  
mD=x3d  
int top=-1; w {6kU   
int pivot; 1Hk`i%  
int pivotIndex,l,r; uq{w1O5  
1 1O^)_|c  
stack[++top]=0; -NHc~=m  
stack[++top]=data.length-1; <`n T+c  
j l%27Ld  
while(top>0){ wxN'Lv=R  
int j=stack[top--]; t4~Bn<=  
int i=stack[top--]; P^T]Ubv"  
&n91f  
pivotIndex=(i+j)/2; c|IH|y  
pivot=data[pivotIndex]; Z!v)zH\  
p^MV< }kk  
SortUtil.swap(data,pivotIndex,j); FK{Vnj0  
R~PD[.\u  
file://partition yC(xi"!  
l=i-1; hZ[,.  
r=j; M9M~[[   
do{ R:fERj<s  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *FmY4w  
SortUtil.swap(data,l,r); v[A)r]"j"M  
} ^FIpkhw  
while(l SortUtil.swap(data,l,r); J7c(qGJI2  
SortUtil.swap(data,l,j); .T#h5[S2x  
9jBP|I{xI  
if((l-i)>THRESHOLD){ 0X !A'  
stack[++top]=i; 4'P otv@/  
stack[++top]=l-1; |@!4BA  
} !EB<e5}8wK  
if((j-l)>THRESHOLD){ n&y'Mb PB  
stack[++top]=l+1; >kU$bh.(  
stack[++top]=j; $oDc  
} w|lA%H7`J  
4$~eG"wu  
} l`>|XUf6  
file://new InsertSort().sort(data); Nb(c;|nV  
insertSort(data); j0_)DG  
} CD]"Q1 t}  
/** U9[QdC  
* @param data PFq1Zai}n|  
*/ iGlg@  
private void insertSort(int[] data) { :2ILN.&  
int temp; ^T2o9f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N`,ppj  
} t<h[Lb%{T4  
} {DlQTgP  
} rom`%qp^  
%{Ib  
} "MM)AY*b  
<A@}C+  
归并排序: !8~A`  
.FYxVF.  
package org.rut.util.algorithm.support; w#0/&\ b=  
}$ C;ccWL  
import org.rut.util.algorithm.SortUtil; Kg?(Ax4  
"Te[R%aP  
/** 8~* |muN.e  
* @author treeroot icS% ])3LF  
* @since 2006-2-2 ?V&# nA  
* @version 1.0 s3<gq x-&r  
*/ W2yNwB+{  
public class MergeSort implements SortUtil.Sort{ nM#/uuRl|  
N(c`h  
/* (non-Javadoc) @@uKOFA?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -j& A;G  
*/ .=G ?Zd  
public void sort(int[] data) { "}*5'e.*  
int[] temp=new int[data.length]; u]0{#wu;g  
mergeSort(data,temp,0,data.length-1); bbNN$-S|  
} &l M=>?  
U</Vcz  
private void mergeSort(int[] data,int[] temp,int l,int r){ `-Y8T\  
int mid=(l+r)/2; \*yH33B9  
if(l==r) return ; HD%n'@E  
mergeSort(data,temp,l,mid); }IJE%  
mergeSort(data,temp,mid+1,r); 'wyS9^F  
for(int i=l;i<=r;i++){ l;7T.2J'Z  
temp=data; qL2!\zt>g  
} E>_N|j)9  
int i1=l; 1#tFO  
int i2=mid+1; n Nu~)X  
for(int cur=l;cur<=r;cur++){ {gT4Oq__  
if(i1==mid+1)  /dI8o  
data[cur]=temp[i2++]; pgUp1goAU  
else if(i2>r) }vK8P r%  
data[cur]=temp[i1++]; e92,@  
else if(temp[i1] data[cur]=temp[i1++]; NdxPC~Z+  
else 6K7DZ96L  
data[cur]=temp[i2++]; unvS`>)Np  
} K&4FFZ  
} Wr+/ 9  
.RW&=1D6  
} z"%{SI^  
eL" +_lW  
改进后的归并排序: @oKW$\  
R,8 W7 3  
package org.rut.util.algorithm.support; #IvHxSo&  
3-Bz5sj9  
import org.rut.util.algorithm.SortUtil; A'6-E{  
"UYlC0 S\  
/** >BWe"{;  
* @author treeroot n:"0mWnL$y  
* @since 2006-2-2 !-HJ%(5:F  
* @version 1.0 `;Od0uh  
*/ :lU#Dm]  
public class ImprovedMergeSort implements SortUtil.Sort { 0}mVP  
gT_tR_g  
private static final int THRESHOLD = 10; h~pQ  
6c6w w"  
/* 9 ;Qgby  
* (non-Javadoc) #J'V,_ wH  
* 7S/\;DF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yz7Fe  
*/ 7u`:e,'  
public void sort(int[] data) { A$3ll|%j  
int[] temp=new int[data.length]; Egt !N  
mergeSort(data,temp,0,data.length-1); #g#[|c.  
} f4;V7DJ  
Cy\ o{6  
private void mergeSort(int[] data, int[] temp, int l, int r) { sK@]|9ciQ  
int i, j, k; dv cLZK  
int mid = (l + r) / 2; 50e vWD  
if (l == r) 3~%M4(  
return; :sX4hZK =G  
if ((mid - l) >= THRESHOLD) 9 lXnNK |]  
mergeSort(data, temp, l, mid); qTz5P  
else SFjRSMi  
insertSort(data, l, mid - l + 1); 7Hg;SK6t0  
if ((r - mid) > THRESHOLD) 8b"vXNB.f  
mergeSort(data, temp, mid + 1, r); ':|E$@$W  
else 5SEGV|%  
insertSort(data, mid + 1, r - mid); LEg ?/!LIT  
kq*IC&y  
for (i = l; i <= mid; i++) { weMufT  
temp = data; 2WS Wfh  
} yu}T><Wst  
for (j = 1; j <= r - mid; j++) { $}EI3a  
temp[r - j + 1] = data[j + mid]; T"DG$R,Aj  
} /%F5u}eW  
int a = temp[l]; p4uN+D `.U  
int b = temp[r]; DfjDw/{U3L  
for (i = l, j = r, k = l; k <= r; k++) { N C3XJ 4  
if (a < b) { A;TNR  
data[k] = temp[i++]; qtjx<`EK>  
a = temp; m 0]1(\%  
} else { Am<){&XT ]  
data[k] = temp[j--]; qzWnl[3  
b = temp[j]; 6?'; ip  
} 8&:dzS  
} V#+M lN  
} ZEB,Q~  
%_(^BZd  
/** 62o nMY  
* @param data J u"/#@  
* @param l [U,hb1Wi3  
* @param i s( :N>K5*  
*/ PKZMuEEy,  
private void insertSort(int[] data, int start, int len) { * $|9e  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jA3xDbM  
} 3F9dr@I.7  
} lQL /I[}  
} $\aJ.N6rb  
} 4|hfzCjMI  
7g4IAsoD  
堆排序: ?NxaJ^  
Xc9NM1bp=  
package org.rut.util.algorithm.support; #iT3 aou  
&r!jjT  
import org.rut.util.algorithm.SortUtil; ] V,#>'  
^3C%&  
/** $e%m=@ga  
* @author treeroot RijFN.s  
* @since 2006-2-2 R=C+]  
* @version 1.0 "d*-k R  
*/ brdY97s4  
public class HeapSort implements SortUtil.Sort{ n],"!>=+  
7Q|v5@;pU  
/* (non-Javadoc) .X"\ Mg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^@$T>SB1  
*/ |H%,>r`9S  
public void sort(int[] data) { VO<P9g$UD  
MaxHeap h=new MaxHeap(); '/fueku  
h.init(data); fS4 Ru  
for(int i=0;i h.remove(); EdCcnl?R6  
System.arraycopy(h.queue,1,data,0,data.length); SpM Hq_MLM  
} 36d6KS 7  
yW;]J8 7*  
private static class MaxHeap{ ~"cqFdnO  
,[u.5vC  
void init(int[] data){ lGEfI&1%!  
this.queue=new int[data.length+1]; 17lc5#^L  
for(int i=0;i queue[++size]=data; Aj+0R?9tG  
fixUp(size); %.s"l6 W  
} 5ZjM:wrF|  
} RCMO?CBe  
,ysn7Y{Y  
private int size=0; oYX#VX  
mW#p&{  
private int[] queue; `<?((l%;R  
~Dj_N$_+9  
public int get() { tj:>o#D  
return queue[1]; O*1la/~m  
} u:>*~$f   
?ehUGvV2  
public void remove() { (y?`|=G-xT  
SortUtil.swap(queue,1,size--); wTn"  
fixDown(1); \P9HAz'6  
} *KPNWY9!W  
file://fixdown << aAYkx <  
private void fixDown(int k) { { pu .l4nk  
int j; '.zr:l  
while ((j = k << 1) <= size) { !%'c$U2  
if (j < size %26amp;%26amp; queue[j] j++; AA K}t6  
if (queue[k]>queue[j]) file://不用交换 #+;0=6+SM  
break; ^S^7 u  
SortUtil.swap(queue,j,k); ?Q: KW  
k = j; :2MHx}]il  
} 5dhT?/qvc  
} xilA`uw`1  
private void fixUp(int k) { HNV"'p;  
while (k > 1) { Cc` )P>L  
int j = k >> 1; Q46sPMH+_  
if (queue[j]>queue[k]) M9wj };vy  
break; WC 5v#*Jd  
SortUtil.swap(queue,j,k); y_Nn%(j  
k = j; \E,Fe:/g  
} yQ+C}8r5  
} lR3JyYY{X  
J,^eq@(  
} 6n'XRfQp)&  
vLh,dzuo  
} D4ud|$s1  
!\_li+  
SortUtil: 1 =9 Kwd  
d=:&tOCg2  
package org.rut.util.algorithm; 0& ?/TSC  
!J+< M~o}  
import org.rut.util.algorithm.support.BubbleSort; f"A?\w @  
import org.rut.util.algorithm.support.HeapSort; ,7izrf8  
import org.rut.util.algorithm.support.ImprovedMergeSort; #zw 'H9l  
import org.rut.util.algorithm.support.ImprovedQuickSort; H3jb{S b  
import org.rut.util.algorithm.support.InsertSort; q/t~`pH3  
import org.rut.util.algorithm.support.MergeSort; VK?c='zg  
import org.rut.util.algorithm.support.QuickSort; AME6Zu3Y  
import org.rut.util.algorithm.support.SelectionSort; IF.6sJg:  
import org.rut.util.algorithm.support.ShellSort; F anA~  
S-)%#  
/** \S"YLRn"  
* @author treeroot 9h 0^_|"  
* @since 2006-2-2 /(skIvE|  
* @version 1.0 !_=3Dz  
*/ ]0)=0pc]E  
public class SortUtil { Q2ky|  
public final static int INSERT = 1; oS_<;Fj  
public final static int BUBBLE = 2; ZYD3[" ~x  
public final static int SELECTION = 3; 7I<];j  
public final static int SHELL = 4; )qx,>PL  
public final static int QUICK = 5; i:,37INMt  
public final static int IMPROVED_QUICK = 6; "6 fTZ<  
public final static int MERGE = 7; `)s>},8W!  
public final static int IMPROVED_MERGE = 8; 7= x]p  
public final static int HEAP = 9; z'ZGN{L  
qddP-uN  
public static void sort(int[] data) { &d^u$Y5  
sort(data, IMPROVED_QUICK); \i$WXW]|  
} rWMG_eP:  
private static String[] name={ PEX(*GS  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" c`h/x>fa  
}; C/x<_VJzN/  
x?MSHOia`P  
private static Sort[] impl=new Sort[]{ y~pJ|E  
new InsertSort(), :$>TeCm  
new BubbleSort(), 6dq*ncNin  
new SelectionSort(), CGkCLd*s]  
new ShellSort(), 0`dMT>&I  
new QuickSort(), o`]u&  
new ImprovedQuickSort(), XK4idC  
new MergeSort(), e(m#elX  
new ImprovedMergeSort(), = A;B-_c  
new HeapSort() ghd*EXrF H  
}; 1f^4J~{  
C) "|sG  
public static String toString(int algorithm){ *R^ulp[W  
return name[algorithm-1]; h_Cac@F0  
} G(XI TL u*  
7J@D})si  
public static void sort(int[] data, int algorithm) { Ii9@ j1-g  
impl[algorithm-1].sort(data); )pA N_e"  
} yPqZ ,  
aj<=]=hr  
public static interface Sort { `+/xA\X]  
public void sort(int[] data); Ge]2g0  
} ;f7;U=gl,  
XABI2Ex  
public static void swap(int[] data, int i, int j) { >-{)wk;1&  
int temp = data; Z:PsQ~M  
data = data[j]; 9V=bV=4:  
data[j] = temp; j7)Xm,wI8  
} 2So7fZa^wg  
} U ExK|t  
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