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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。 _W/s=pCh  
插入排序: *oL?R2#7  
+^Eruv+F  
package org.rut.util.algorithm.support; 9e^[5D=L  
(Ybc~M)z  
import org.rut.util.algorithm.SortUtil; j1*'yvGM  
/** @bOhnd#W  
* @author treeroot HsGXb\  
* @since 2006-2-2 @X?DHLM  
* @version 1.0 S=~[6;G  
*/ jxL} tS{j  
public class InsertSort implements SortUtil.Sort{ b %L8mX  
{3@f(H m  
/* (non-Javadoc) !JzM<hyg3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 57*z0<  
*/ 5'd$TC  
public void sort(int[] data) { Q4Zuz)r*  
int temp; 0#<q]M?hW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8{#W F#  
} %/"I.\%d  
} sI7d?+  
} jB!p,fqcb  
('xIFi  
} J:Ea|tXK^  
Zy|B~.@<j  
冒泡排序: a\ fG)Fqp  
BaZ$pO^  
package org.rut.util.algorithm.support; Qn(2UO!pD  
JGOry \  
import org.rut.util.algorithm.SortUtil; <qT[  
dKTyh:_{  
/** y^zII5|s  
* @author treeroot H?*EQK`7?0  
* @since 2006-2-2 3_|<CE6  
* @version 1.0 n/6#rj^$  
*/ H C(Vu  
public class BubbleSort implements SortUtil.Sort{ 1K?RA*aj  
~~a,Fyko2  
/* (non-Javadoc) /2l&D~d"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :7UC=GKQk  
*/ U$v|c%6  
public void sort(int[] data) { v_mk{  
int temp; `)%zk W  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +wc8rE6+W  
if(data[j] SortUtil.swap(data,j,j-1); ?!^ow5"8  
} rV84?75( Y  
} fb-Lp#!T39  
} YbtsJ <w  
} 1/+d@s#t  
i0Ejo;dB  
} 5{Q5?M]  
E@ J/_l;  
选择排序: lC/1,Z/M  
#(swVo:+E  
package org.rut.util.algorithm.support; 'L?e)u.  
r5 tn'  
import org.rut.util.algorithm.SortUtil; ;\j7jz^uC  
X3e&c  
/** 9$[6\jMh  
* @author treeroot S&/,+x'c|  
* @since 2006-2-2 $inlI_  
* @version 1.0 GT.1,E ,Vw  
*/ GsIVx!  
public class SelectionSort implements SortUtil.Sort { ' ` _TFTO  
bGw56s'R5~  
/* 5~D(jHY;  
* (non-Javadoc) A0hKzj  
* ]%M&pc3U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r$[`A_  
*/ GDF/0-/Z  
public void sort(int[] data) { >~@O\n-t  
int temp; eH HY.^|  
for (int i = 0; i < data.length; i++) { a-e_q  
int lowIndex = i; 88Nx/:#Y*  
for (int j = data.length - 1; j > i; j--) { UE9RrfdN  
if (data[j] < data[lowIndex]) { i;Dj16h  
lowIndex = j; ) >;7"v  
} ^'9.VVyz  
} n%|og^\0  
SortUtil.swap(data,i,lowIndex); Q,nJz*AJ  
} ES-V'[+jDy  
} CvhVV"n  
vB74r]'F  
} FKZ'6KM&A  
>``sM=Wat  
Shell排序: 6ChFsteGFr  
"I3 #/~q  
package org.rut.util.algorithm.support; mT:NC'b<9  
Ez8k.]qu  
import org.rut.util.algorithm.SortUtil; {FQ@eeU  
!"2S'oQKS  
/** 0=0,ix7?#  
* @author treeroot <%o9*)F  
* @since 2006-2-2 H )51J:4  
* @version 1.0 AH{#RD  
*/ <Y]e  
public class ShellSort implements SortUtil.Sort{ * N]^(+/A  
3v@h&7<E  
/* (non-Javadoc) !4-4i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X=+|(A,BdY  
*/ /#WvC;B  
public void sort(int[] data) { 6ao~f?JZ  
for(int i=data.length/2;i>2;i/=2){ {J1iheuS}  
for(int j=0;j insertSort(data,j,i); Y-UXr8  
} P_4E<"eK  
} NbC2N)L4  
insertSort(data,0,1); 7u{V1_ n1  
} q<j9l'dHG  
4O{G^;  
/** 2x>7>;>  
* @param data dz?On\66  
* @param j &~Pk*A_:  
* @param i h@E7wp1'~  
*/ 0kSM$D_  
private void insertSort(int[] data, int start, int inc) { 'W,*mfB  
int temp; [^Bjmw[7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0-~s0R89A  
} Y[l<fbh(}  
} "~=-Q#xO  
} h%U}Y5Ps~  
55 '  
} /oW]? 9  
C1'y6{,@  
快速排序: > 23$_'2  
O wuc9  
package org.rut.util.algorithm.support; ,]:Gn5~  
ufCpX>lNF  
import org.rut.util.algorithm.SortUtil; YA@MLZm  
-%5#0Ogh M  
/** ,f{w@Er  
* @author treeroot Th$Z9+()  
* @since 2006-2-2 =[8K#PZ$w  
* @version 1.0 AT)b/ycC  
*/ RyP MzxV  
public class QuickSort implements SortUtil.Sort{ Y0.'u{J*  
CIz0Gjtx6m  
/* (non-Javadoc) `!t-$i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 _Oc1RM   
*/ aW*k,\:e  
public void sort(int[] data) { 4e/!BGkAS  
quickSort(data,0,data.length-1); 76"4Q!  
} &&m3E=K!^  
private void quickSort(int[] data,int i,int j){ xu_,0 ZT]{  
int pivotIndex=(i+j)/2; 4w~%MZA^  
file://swap {aNpk,n  
SortUtil.swap(data,pivotIndex,j); 04jvrde8-O  
F$(ak;v}  
int k=partition(data,i-1,j,data[j]); 5wmd[YL  
SortUtil.swap(data,k,j); Bcarx<P-p  
if((k-i)>1) quickSort(data,i,k-1); Db<#gH  
if((j-k)>1) quickSort(data,k+1,j); E(j# R"  
RYA@{.O  
} S\h5 D2G;  
/** JLnv O  
* @param data R2n 2mQ<  
* @param i JC%&d1  
* @param j DrKB;6  
* @return ? "r=08  
*/ C<AW)|r_  
private int partition(int[] data, int l, int r,int pivot) { =V]0G,,\  
do{ G/Nc@XG\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _<LL@IX  
SortUtil.swap(data,l,r); >iae2W`  
} 8'zZVX D<  
while(l SortUtil.swap(data,l,r); /$CTz xd1  
return l; ' {UKO7   
} xsB0LUt  
Z.Yq)\it  
} V-}}?c1 F  
;o3gR4u_L  
改进后的快速排序: a3<:F2=~\  
+ZM,E8  
package org.rut.util.algorithm.support; 3}<U'%sd  
4lB??`UN  
import org.rut.util.algorithm.SortUtil; UMR?q0J  
HKXC=^}x'  
/** d(o=)!p  
* @author treeroot #dj?^n g  
* @since 2006-2-2 ^" X.aksA  
* @version 1.0 \~ChbPnc  
*/ 6sSwSS  
public class ImprovedQuickSort implements SortUtil.Sort { }I&.xzJ  
dHUbaf:e)T  
private static int MAX_STACK_SIZE=4096; = 'NV3by  
private static int THRESHOLD=10; k?14'X*7yu  
/* (non-Javadoc) ]alc%(=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xKG7d8=  
*/ &)mZ~cPU3  
public void sort(int[] data) { E(P 6s;LZ  
int[] stack=new int[MAX_STACK_SIZE]; j4?Qd0z  
4u 6 FvN  
int top=-1; }yEV&& @  
int pivot; 8u+kA mI  
int pivotIndex,l,r; VTu#)I7A^@  
?`piie9V  
stack[++top]=0; +:.Jl:fx4  
stack[++top]=data.length-1; 172G  
Or5?Gt  
while(top>0){ y4Jc|)  
int j=stack[top--]; 2K91E}  
int i=stack[top--]; [i`  
{R!yw`#^B  
pivotIndex=(i+j)/2; ;o!p9MEpz;  
pivot=data[pivotIndex]; sgp.;h'  
'w+]kt-  
SortUtil.swap(data,pivotIndex,j); B`B =bn+4  
s$R /!,c  
file://partition *8Z2zmZtR^  
l=i-1; @.e X8~3=  
r=j; J:m/s9r  
do{ 0SIC=p=J  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &u.{]Yjx  
SortUtil.swap(data,l,r); qNQ54#  
} `I5^zi8  
while(l SortUtil.swap(data,l,r); Tn}`VW~  
SortUtil.swap(data,l,j); bmv8nal<Y  
Jj-\Eb?  
if((l-i)>THRESHOLD){ ~T1W-ig4[*  
stack[++top]=i; + Q-b}  
stack[++top]=l-1; xnY?<?J"!  
} vA/SrX.  
if((j-l)>THRESHOLD){ qT$k%(  
stack[++top]=l+1; {]HiTpn  
stack[++top]=j; o+a=  
} 5*YoK)2J  
j<t3bM-G  
} QH/py  
file://new InsertSort().sort(data); SyvoN, ;Q  
insertSort(data); /f3/}x!po  
} PJ.\ )oP  
/** *-T.xo  
* @param data u\*9\ G  
*/ %Rk|B`ST  
private void insertSort(int[] data) { ]RCo@QW  
int temp; *G58t`]r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  Z1 D  
} w]wZJ/U`  
} {D4FYr J  
} *dBeb  
VgH O&vU  
} &6x(%o|  
TA[%eMvA  
归并排序: 46:<[0Psl/  
s@\3|e5g  
package org.rut.util.algorithm.support; >yO/p(/;jR  
$Rm~ VwY#  
import org.rut.util.algorithm.SortUtil; rqamBm 5  
.zO^"mXjS  
/** [b++bCH3  
* @author treeroot 5|H;%T 3_  
* @since 2006-2-2 Vebv!  
* @version 1.0 i KSRr#/  
*/ 9Dx~! (  
public class MergeSort implements SortUtil.Sort{ ReaZg ?:h  
E|@C:ghG  
/* (non-Javadoc) 7hk)I`o65  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qed_PsI  
*/ ,>j3zjf^  
public void sort(int[] data) { t ed:]  
int[] temp=new int[data.length]; fCY|iO0.t  
mergeSort(data,temp,0,data.length-1); m%|\AZBA#  
} ~fXNj-'RW  
g257jarkMF  
private void mergeSort(int[] data,int[] temp,int l,int r){ AzU:Dxr>.G  
int mid=(l+r)/2; aq?bI:>8  
if(l==r) return ; cC*WZ]  
mergeSort(data,temp,l,mid); TNu% _ 34  
mergeSort(data,temp,mid+1,r); V;SfW2`)  
for(int i=l;i<=r;i++){ K?l|1jez(#  
temp=data; Vl5r~+$|  
} ,cxqr3 o  
int i1=l; Za@\=}Tt  
int i2=mid+1; Oc)n,D)0  
for(int cur=l;cur<=r;cur++){ :|j[{;asY  
if(i1==mid+1) LK h=jB^bT  
data[cur]=temp[i2++]; SgU@`Pb  
else if(i2>r) #/qcp|m  
data[cur]=temp[i1++]; maa pX/J  
else if(temp[i1] data[cur]=temp[i1++]; 0AnL]`"t.3  
else e@hPb$7  
data[cur]=temp[i2++]; A[P7hMn  
} ~A0AB `7  
} 2-F7tcya|  
`q}D#0  
} r6S  
1RkN^FZOxq  
改进后的归并排序: r`"_D%kc  
29Uqdo  
package org.rut.util.algorithm.support; {V[xBL <  
HG7Qdw2+O  
import org.rut.util.algorithm.SortUtil; oCo~,~kTR  
'bfxQ76@sa  
/** z fUDo`V~  
* @author treeroot {tVA(&\<  
* @since 2006-2-2 |1wZ`wGZ:L  
* @version 1.0 m]DP{-s4  
*/ q;SD+%tI  
public class ImprovedMergeSort implements SortUtil.Sort { &tOo[U?  
!+$qSD,%x  
private static final int THRESHOLD = 10; i7H([b<_m  
c:${qY:!  
/* Wi$?k {C  
* (non-Javadoc) 6UIS4 _   
* $Y/z+ea  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1=]#=)+  
*/ P#pb48^-  
public void sort(int[] data) { X}B] 5  
int[] temp=new int[data.length];  WDNj 7  
mergeSort(data,temp,0,data.length-1); 0,0WdJAe  
} /:!sn-(  
@!$xSH  
private void mergeSort(int[] data, int[] temp, int l, int r) { []OS p&  
int i, j, k; Va[&~lA)  
int mid = (l + r) / 2; eI|FrBq%  
if (l == r) ~U<j_j)z4.  
return; pTAm}  
if ((mid - l) >= THRESHOLD) X>dQK4!R  
mergeSort(data, temp, l, mid); 65B&>`H~  
else hj=n;,a9  
insertSort(data, l, mid - l + 1); aaVq>$G 3  
if ((r - mid) > THRESHOLD) Tu:lIy~A  
mergeSort(data, temp, mid + 1, r); s2sJJdN  
else QP%AJ[3ea%  
insertSort(data, mid + 1, r - mid); ]_ LAy  
6heK8*.T  
for (i = l; i <= mid; i++) { oKRI2ni$j9  
temp = data; p7},ymQ|YQ  
} iLdUus!  
for (j = 1; j <= r - mid; j++) { "+Ks#  
temp[r - j + 1] = data[j + mid]; B <Jxj  
} ^g'uR@uU  
int a = temp[l]; EhW@iYL  
int b = temp[r]; o &b\bK%E  
for (i = l, j = r, k = l; k <= r; k++) { uxW |&q  
if (a < b) { p@$92> '  
data[k] = temp[i++]; BAqwYWdS  
a = temp; e{: -N  
} else { RaiYq#X/  
data[k] = temp[j--]; _J>Ik2EF  
b = temp[j]; ~ LH).\V  
} 3&X5*-U  
} \KEmfCx'n  
} ziAn9/sT  
kaZcYuT.9  
/** CS^|="Zs  
* @param data H8c -/  
* @param l "t{D5{q|[k  
* @param i B(@uJ^N  
*/ Ud-c+, xX  
private void insertSort(int[] data, int start, int len) { Ze`ms96j{  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <t*3w  
} eET1f8 B=L  
} u_=>r_J[b  
} 7r3EMX\#Qm  
} f+Bv8 g  
}g.)%Bw!  
堆排序: BBoVn^Z*R  
=rNI&K_<  
package org.rut.util.algorithm.support; l%cE o`U  
Oi!uJofW  
import org.rut.util.algorithm.SortUtil; _t7aOH  
]T<RC\o  
/** ]gb?3a}A  
* @author treeroot F-?s8RD  
* @since 2006-2-2 $8_b[~%2  
* @version 1.0 kEdAt5/U{  
*/ M-f; ,>  
public class HeapSort implements SortUtil.Sort{ :jWQev"/  
$T'lWD*  
/* (non-Javadoc) ^^*dHWHn<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M[dJQ (  
*/ ,3ivB8  
public void sort(int[] data) { fH 5/  
MaxHeap h=new MaxHeap(); XuW>GT/  
h.init(data); 9r,7>#IF  
for(int i=0;i h.remove(); f,Dj@?3+  
System.arraycopy(h.queue,1,data,0,data.length); y}lqF8s  
} , rc %#eF  
ytGcigw(P  
private static class MaxHeap{ uHO>FM,  
U{.yX7  
void init(int[] data){ t'Pn*  
this.queue=new int[data.length+1]; +,Z Q( ZW  
for(int i=0;i queue[++size]=data; "PY&NL?  
fixUp(size); 7%^ /Jm  
} 6M_,4> -  
} ^b`aO$  
1lQO`CmR6M  
private int size=0; Ut^ {4_EC  
],ISWb  
private int[] queue; 4Q(GX.5  
r5aOQ  
public int get() { Sy`7})[  
return queue[1]; ]PjJy/vkjj  
} iyf vcKO  
P PSSar  
public void remove() { e47N9&4  
SortUtil.swap(queue,1,size--); pbePxOG  
fixDown(1); J9*$@&@S  
} 1|Z!8:&pj  
file://fixdown S+&Bf ~~D  
private void fixDown(int k) { +>S\.h s4  
int j; zU,Qph ,<  
while ((j = k << 1) <= size) { ]728x["(19  
if (j < size %26amp;%26amp; queue[j] j++; i_6 Y6  
if (queue[k]>queue[j]) file://不用交换 o79EDPX  
break; W #kOcw  
SortUtil.swap(queue,j,k); &;Jg2f%.  
k = j; m<uBRI*I  
} 3=~0m  
} [ GqQ6\  
private void fixUp(int k) { 7[?{wbq  
while (k > 1) { V1Opp8  
int j = k >> 1; VwrHD$  
if (queue[j]>queue[k]) Zw<\^1  
break; I[v6Y^{q  
SortUtil.swap(queue,j,k); >")<pUQ  
k = j; Doj>Irj? 7  
} {gwJ>]z"e  
} MYVgi{  
TcM;6h`  
} I c 2R\}q  
. +  
} )D"E]  
sw^4h`^'  
SortUtil: 6w Y6* R  
\DC0`  
package org.rut.util.algorithm; L|H:&|F  
2jiH&'@  
import org.rut.util.algorithm.support.BubbleSort; Qaeg3f3F3  
import org.rut.util.algorithm.support.HeapSort; qPG>0 O  
import org.rut.util.algorithm.support.ImprovedMergeSort; EAPjQA-B?  
import org.rut.util.algorithm.support.ImprovedQuickSort; + #V.6i  
import org.rut.util.algorithm.support.InsertSort; $zUHka   
import org.rut.util.algorithm.support.MergeSort; ;S.o` z1GI  
import org.rut.util.algorithm.support.QuickSort; vlS+UFH0  
import org.rut.util.algorithm.support.SelectionSort; U8gf_R'  
import org.rut.util.algorithm.support.ShellSort; ev"f@y9Do  
p.|NZXk%%a  
/** &;wNJ)Uc  
* @author treeroot GI _.[  
* @since 2006-2-2 Yfd0Np~  
* @version 1.0 ]]^eIjg>a6  
*/ I->BDNk  
public class SortUtil { )~[rb<:)b  
public final static int INSERT = 1; k ^(RSu<  
public final static int BUBBLE = 2; si=m5$V  
public final static int SELECTION = 3; )j/b `V6  
public final static int SHELL = 4; dn}'B%  
public final static int QUICK = 5; f~?4  
public final static int IMPROVED_QUICK = 6; RR9G$}WS(  
public final static int MERGE = 7; V krjs0  
public final static int IMPROVED_MERGE = 8; # m;|QWW  
public final static int HEAP = 9; .TpM3b#r  
fx3oA}  
public static void sort(int[] data) { >o,l/# z  
sort(data, IMPROVED_QUICK); RHv|ijYy  
} RoYwZX~  
private static String[] name={ -4!S?rHwd+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Zv&<r+<g  
}; %&}gt+L(M  
`m+o^!SGe  
private static Sort[] impl=new Sort[]{ 9L7jYy=A#  
new InsertSort(), ~;/}D0k$x  
new BubbleSort(), @T@lHc  
new SelectionSort(), G{]tB w  
new ShellSort(), >\4"k4d}  
new QuickSort(), sX[k}=HCK  
new ImprovedQuickSort(), uG,*m'x']  
new MergeSort(), caD)'FSES  
new ImprovedMergeSort(), ;5!M+nk  
new HeapSort() 9gQ ]!Oq  
}; AXT(D@sI=  
wzf%~ats  
public static String toString(int algorithm){ \9N )71n(  
return name[algorithm-1]; 4D=^24f`0  
} 8d1r#sILI  
NnTAKd8  
public static void sort(int[] data, int algorithm) { /Xf_b.ZM&  
impl[algorithm-1].sort(data); J>N^FR9  
} HIsB)W&%@  
Yc p<N>)  
public static interface Sort { BRTCo,i  
public void sort(int[] data); :F`"CR^,  
} KybrSa  
iTc q=  
public static void swap(int[] data, int i, int j) { /7LAd_P6  
int temp = data; RG e2N |  
data = data[j]; xua E\*m  
data[j] = temp; ioJ|-@! #o  
} " 3tk"#.#  
} SL 5QhP  
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