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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。 I L,lXB<  
插入排序: +r7hc;+G  
HB`'S7Q  
package org.rut.util.algorithm.support; L9XfR$7,z  
N;,zPWa  
import org.rut.util.algorithm.SortUtil; R!yh0y}Z  
/** )_\;l%&  
* @author treeroot W?"l6s  
* @since 2006-2-2 ?XP4kjJ  
* @version 1.0 D+BiclJ  
*/ ?|WoNA~j}`  
public class InsertSort implements SortUtil.Sort{ ;Yv{)@'Bc  
P j,H]  
/* (non-Javadoc) [oXSjLQm[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v 2 p  
*/ ZjY,k  
public void sort(int[] data) { Uk*(C(  
int temp; v_Df+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z=Cw7E  
} w>8kBQ?b  
} &-{%G=5~e%  
} kvuRT`/  
6212*Z_Af  
} 'n>44_7L  
%hN(79:g  
冒泡排序: ,i|K} Y&  
^/$dSXKF  
package org.rut.util.algorithm.support; Y652&{>q  
ITg:OOQ  
import org.rut.util.algorithm.SortUtil; ,A $IFE  
(F 9P1Iq  
/** v#d(Kj  
* @author treeroot ~JNE]mg  
* @since 2006-2-2 MgJ5FRQ  
* @version 1.0 Ook\CK*nKe  
*/ CM$&XJzva  
public class BubbleSort implements SortUtil.Sort{ rk4KAX_[  
:*BN>*1^\r  
/* (non-Javadoc) :3XvHL0rx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _'1 7C /  
*/ lZ)6d-vK  
public void sort(int[] data) { xf/K+  
int temp; \y%"tJ~N{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ he/rt#  
if(data[j] SortUtil.swap(data,j,j-1); G[]%1 _QCO  
} r]&sXKDc  
} @ *~yVV!5  
} -s!J3DB  
} D\+x/r?-I  
4H;7GNu  
} GD)paTwO<  
,YjjL  
选择排序: (gPB@hAv  
B~k{f}  
package org.rut.util.algorithm.support; '3U,UD5EG  
_ Pzgn@D  
import org.rut.util.algorithm.SortUtil; X Db%-  
n0gjcDHQ  
/** .a :7|L#a  
* @author treeroot GM9[ 0+u;  
* @since 2006-2-2 SP<Sv8Okj  
* @version 1.0 \m}a%/  
*/ <}A6 )=T  
public class SelectionSort implements SortUtil.Sort { N\&VJc  
2;*G!rE&*`  
/* 0tL5t7/Gr  
* (non-Javadoc) d }fd^x/  
* Sz<:WY/(x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9eq)WI/  
*/ ,mvFeo;@f  
public void sort(int[] data) { H)E,([   
int temp; g.Qn,l]X/p  
for (int i = 0; i < data.length; i++) { ;<[!;8  
int lowIndex = i; /DH`7E  
for (int j = data.length - 1; j > i; j--) { :Zkjtr.\  
if (data[j] < data[lowIndex]) { )quQI)Ym  
lowIndex = j; UMBeY[ ?  
} G~.VW48{n  
} x=a#|]ngG  
SortUtil.swap(data,i,lowIndex); y7CXE6Y  
} Qj1%'wWG  
} :|S[i('  
E$4H;SN \  
} B8T5?bl  
EXjR&"R  
Shell排序: 5wh(Qdib  
yx&}bu\  
package org.rut.util.algorithm.support; ^`dMjeF  
BR?DW~7J j  
import org.rut.util.algorithm.SortUtil; v(JjvN21  
fV7 k{dR  
/** 2?Ryk`2i)  
* @author treeroot U?|A3;,xh  
* @since 2006-2-2 CdCY#$Z  
* @version 1.0 SeS ZMv  
*/ *c/|/  
public class ShellSort implements SortUtil.Sort{ %rnRy<9  
YqXN|&  
/* (non-Javadoc) }j1;0kb?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *P7n YjG  
*/ n} !')r  
public void sort(int[] data) { .Wp(@l'Hd  
for(int i=data.length/2;i>2;i/=2){ | B$JX'_  
for(int j=0;j insertSort(data,j,i); *gGw/jA/  
} k5tyOk  
} rfQs 7S;G  
insertSort(data,0,1); RT'5i$q[  
} ^-s7>F`jx  
sA: /!9  
/** ~Ni-}p  
* @param data Yz0HB EA  
* @param j ZJGIib  
* @param i ^i WGGnGS  
*/ ho~WD'i  
private void insertSort(int[] data, int start, int inc) { Bs`='w%7  
int temp; oz:J.<j24Z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d3?gh[$  
} :mCGY9d4L  
} +|+fDQI  
} 0L"uU3  
yJqDB$0  
} :18}$  
R*W1<W%q=  
快速排序: wV$V X  
P&5vVA6K7  
package org.rut.util.algorithm.support; #q0xlF@  
#\Q)7pgi.  
import org.rut.util.algorithm.SortUtil; W0U|XX!&  
F/A)2 H_  
/** P??pWzb6HH  
* @author treeroot ?H!&4o  
* @since 2006-2-2 n Zx^ej\  
* @version 1.0 T?u*ey~Tv  
*/ /Z#AHfKF  
public class QuickSort implements SortUtil.Sort{ {BAZ`I  
4T&Jlu?:  
/* (non-Javadoc) p{r{}iYI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R~TG5^(  
*/ ko!aX;K  
public void sort(int[] data) { ^H<VH  
quickSort(data,0,data.length-1); A"+t[0$.  
} 436SIh  
private void quickSort(int[] data,int i,int j){ #vBSg  
int pivotIndex=(i+j)/2; 7A<}JaE!,  
file://swap )0;O<G] d  
SortUtil.swap(data,pivotIndex,j); {EU]\Mp0j  
;yZY2)L   
int k=partition(data,i-1,j,data[j]); Pff-eT+~m  
SortUtil.swap(data,k,j); .&^M Z8  
if((k-i)>1) quickSort(data,i,k-1); FuBUg _h  
if((j-k)>1) quickSort(data,k+1,j); m]=G73jzO  
u |$GOSD  
} !a'{gw  
/** \4*i;a.kU  
* @param data zCwb>v  
* @param i _J3\e%ys  
* @param j W`wT0kP?*]  
* @return [vdC$9z,  
*/ =E~SaT  
private int partition(int[] data, int l, int r,int pivot) { 3i}$ ~rz]U  
do{ _1$+S0G;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'xM\txZ;  
SortUtil.swap(data,l,r); yAel4b/}  
} 1&kf2\S  
while(l SortUtil.swap(data,l,r); tE=$#  
return l; 6X VJ/qZ  
} u`*$EP-%  
2b#> ~  
} ?* dfIc  
ooYs0/,{  
改进后的快速排序: zfml^N  
gp{P _  
package org.rut.util.algorithm.support; Qcs0w(  
etP`q:6^c  
import org.rut.util.algorithm.SortUtil; FFF7f5F  
N9f;X{  
/** Ahg6>7+R.  
* @author treeroot zjx'nK{eI  
* @since 2006-2-2 QO,ge<N+N  
* @version 1.0 .7#04_aP  
*/ =OA7$z[  
public class ImprovedQuickSort implements SortUtil.Sort { LA837%)  
1g|6,J  
private static int MAX_STACK_SIZE=4096; MP8s}  
private static int THRESHOLD=10; GlXzH1wZ  
/* (non-Javadoc) )jRaQ~Sm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q]*:RI?wGT  
*/ f6HDfJmE  
public void sort(int[] data) { !un_JZD  
int[] stack=new int[MAX_STACK_SIZE]; pQ+4++7ID  
EmcwX4|  
int top=-1; +(hr5  
int pivot; UDa\*  
int pivotIndex,l,r; @L^30>?l  
MWc{7,  
stack[++top]=0; GwlAEhP  
stack[++top]=data.length-1; cFG%Ew@  
K~z9b4a>  
while(top>0){ *icxK  
int j=stack[top--]; 'P-FeN^  
int i=stack[top--]; RK=YFE 0  
s0'Xihsw6  
pivotIndex=(i+j)/2; <QE/p0.  
pivot=data[pivotIndex]; \hZ9in`YlR  
IAn/?3a~  
SortUtil.swap(data,pivotIndex,j); en gh3TZC  
3^AS8%qG  
file://partition ;0++):30V  
l=i-1; nr{ }yQ u  
r=j; O7I|<H/gVE  
do{ r|7hm:F)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3sGe#s%  
SortUtil.swap(data,l,r); }Rq-IRa'  
} ~7=w,+  
while(l SortUtil.swap(data,l,r); Wv)2dD2I  
SortUtil.swap(data,l,j); We#O' m  
`L}Irt}  
if((l-i)>THRESHOLD){ N+ R/ti  
stack[++top]=i; P!2[#TL0  
stack[++top]=l-1; ,t>/_pI+=  
} $yg}HS7HC  
if((j-l)>THRESHOLD){ !7[Rhk7bW  
stack[++top]=l+1; dCMWv~>  
stack[++top]=j; l. i&.;f  
} C{):jH,Rf  
y3C$%yv0  
} [mk!] r  
file://new InsertSort().sort(data); 0IjQqI  
insertSort(data); F%QVn .  
} Ndx  ]5  
/** 4;d9bd)A  
* @param data -T-h~5   
*/ t%<d}QuHW  
private void insertSort(int[] data) { zc-.W2"Hu  
int temp; J;BG/VI1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +hS}msu'  
} :ITz\m  
} <)(STo  
} x:Kca3pv_  
enT.9|vm/  
} u_U51C\rb  
iPJZ%  
归并排序: 8[;U|SR"  
-xf=dzm)  
package org.rut.util.algorithm.support; G%K<YyAP  
(UTt_ry g  
import org.rut.util.algorithm.SortUtil; TNC,{sM  
XA:v:JFS  
/** fXYg %  
* @author treeroot <%Re!y@OL  
* @since 2006-2-2 TNV#   
* @version 1.0 Si]8*>}-B  
*/ Fu(I<o+T-  
public class MergeSort implements SortUtil.Sort{ asI:J/%+2  
4o2 C=?@(  
/* (non-Javadoc) &sQtS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ghiFI<)VY  
*/ ]7^YPFc+  
public void sort(int[] data) { PF- sb&q  
int[] temp=new int[data.length]; R('44v5JQp  
mergeSort(data,temp,0,data.length-1); PTvP;  
} |nj%G<  
<H~  (iQ  
private void mergeSort(int[] data,int[] temp,int l,int r){ E$rn^keM  
int mid=(l+r)/2; >g6:{-b^a  
if(l==r) return ; "sRR:wzQu  
mergeSort(data,temp,l,mid); .yF7{/  
mergeSort(data,temp,mid+1,r); #.%;U' #O  
for(int i=l;i<=r;i++){ PZ;O pp  
temp=data; MqI!i>  
} 7Q.?] k&  
int i1=l; B;':Eaa@  
int i2=mid+1; R '/Ilz`  
for(int cur=l;cur<=r;cur++){ E7axINca  
if(i1==mid+1) ]ba O{pJi  
data[cur]=temp[i2++]; W%.Kr-[?`o  
else if(i2>r) ^r$P&}Z\b  
data[cur]=temp[i1++]; W$P)fPU'  
else if(temp[i1] data[cur]=temp[i1++]; e p;_'  
else C;;dCsiV5  
data[cur]=temp[i2++]; yHhBUpIo  
} |k+Y >I&  
} y4Plm.  
qgU$0enSs  
} o$YL\ <qp  
3%xj-7z W  
改进后的归并排序: 9[B*CD |  
hM(|d@)  
package org.rut.util.algorithm.support; jzu1>*ok  
*A O/$K@Ma  
import org.rut.util.algorithm.SortUtil; ,?7U Rx*  
ueYZM<],  
/** KaHjL&!  
* @author treeroot bY;ah;<  
* @since 2006-2-2 oO>mGl36H  
* @version 1.0 `hL16S  
*/ eEQ 4L\d  
public class ImprovedMergeSort implements SortUtil.Sort { 3m?3I2k  
t8 #&bU X  
private static final int THRESHOLD = 10; }S$]MY,*  
!B(6  
/* j#0@%d  
* (non-Javadoc) &B7X LO[  
* HkEfBQmh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qg9 N?e{z  
*/ }0|,*BkI m  
public void sort(int[] data) { 5B@+$D[0?3  
int[] temp=new int[data.length]; o|AV2FM)  
mergeSort(data,temp,0,data.length-1); +=^10D  
} a4L8MgF&$-  
7\K=8G  
private void mergeSort(int[] data, int[] temp, int l, int r) { $AUC#<*C  
int i, j, k; ~k4S~!(U0  
int mid = (l + r) / 2; ,)nO   
if (l == r) PygaW&9Z|d  
return; W :jC2,s!m  
if ((mid - l) >= THRESHOLD) WeE>4>^  
mergeSort(data, temp, l, mid); ,Rk;*MEMJ  
else ">lu8F  
insertSort(data, l, mid - l + 1); ;2-,Xzz8  
if ((r - mid) > THRESHOLD) '$PiyM|V  
mergeSort(data, temp, mid + 1, r); Qhsh{muw(  
else Y: oL  
insertSort(data, mid + 1, r - mid); CbA!  
:}v&TQ  
for (i = l; i <= mid; i++) {  ">*PH}b  
temp = data; vz*QzVk1  
} iXMs*G cK  
for (j = 1; j <= r - mid; j++) { [GX5jD#  
temp[r - j + 1] = data[j + mid]; ?A;x%8}  
} lh&Q{t(+8  
int a = temp[l]; M;,Q8z%  
int b = temp[r]; Z~ VOO7|m  
for (i = l, j = r, k = l; k <= r; k++) { r'uD|T H  
if (a < b) { Oj6-  
data[k] = temp[i++]; YgC J s;  
a = temp; \IbGNV`q  
} else { V.6h6B!vB  
data[k] = temp[j--]; p@y?xZS  
b = temp[j]; 9H$#c_zrq  
} vX;WxA<  
} F??})YX  
} De@GNN"-  
& xo,49`!  
/** #HpF\{{v  
* @param data |T atRB3>  
* @param l )"q$g&  
* @param i B>WAlmPA  
*/ +1~Y2   
private void insertSort(int[] data, int start, int len) { z;JyHC)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); E4 GtJ`{X  
} Cb5;l~}L  
} J wL}|o6  
} EaaQC]/OX5  
} 85+'9#~!  
_SC{nZ[  
堆排序: A}v! vVg  
*]NG@^y  
package org.rut.util.algorithm.support; ]KdSwIbi  
dE~]%fUFy-  
import org.rut.util.algorithm.SortUtil; ^pruQp1X  
jT>G8}h  
/** byoP1F%  
* @author treeroot v% 6uU  
* @since 2006-2-2 F_.rLgGY  
* @version 1.0 \H^DiF%f9  
*/ \9j +ejGf  
public class HeapSort implements SortUtil.Sort{ (Ild>_Tdb`  
Vea2 oQq  
/* (non-Javadoc) 5]pvHc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #@FMH*?xX6  
*/ q{T [|(!  
public void sort(int[] data) { f?vbIc`  
MaxHeap h=new MaxHeap(); @lpo$lN0R  
h.init(data); Htl2CcZ  
for(int i=0;i h.remove(); {o1 vv+i  
System.arraycopy(h.queue,1,data,0,data.length);  @oE^(  
} j5\z7  
x7\b-EC  
private static class MaxHeap{ ]!CMo+  
O(x1Ja,&  
void init(int[] data){ }huj%Pnk )  
this.queue=new int[data.length+1]; 3-x ;_  
for(int i=0;i queue[++size]=data;  +~xY}  
fixUp(size); 'u@,,FFz[K  
} gQ90>P:  
} kNq>{dNRx  
x*>@knP<-  
private int size=0; U'~M(9uv:  
J5dwd,FQ  
private int[] queue; s krdL.5  
by07l5  
public int get() { uCkXzb9_z  
return queue[1]; e}lF#$  
} tVfZ~q J  
) uM*`%  
public void remove() { 5j'7V1:2  
SortUtil.swap(queue,1,size--); Uh[MB wK  
fixDown(1); >b\{y}[  
} `Iwl\x[A  
file://fixdown 3yGo{uW  
private void fixDown(int k) { qzon);#7w  
int j; T.bn~Z#f  
while ((j = k << 1) <= size) { x[u4>f  
if (j < size %26amp;%26amp; queue[j] j++; hTfq>jIB_  
if (queue[k]>queue[j]) file://不用交换 lw+54lZX|  
break; ob3)bI oM  
SortUtil.swap(queue,j,k); _[)f<`!g_V  
k = j; Hk&op P9)  
} ^wass_8  
} qwhDv+o  
private void fixUp(int k) { >EE}P|=-  
while (k > 1) { M./1.k&@  
int j = k >> 1; /{6&99SJcc  
if (queue[j]>queue[k]) &t)$5\r  
break; jVlXB6[-  
SortUtil.swap(queue,j,k); ,~Y[XazT  
k = j; ]@Z[/z%~04  
} r+=%Ag  
} oYx4+xH/  
Ml,~@} p  
} --OAsbr  
^8.s"4{  
} M!i["($_  
M r-l  
SortUtil: "+XF'ZO  
kz0pX- @b  
package org.rut.util.algorithm; #~}4< 18  
-%fc)y&$  
import org.rut.util.algorithm.support.BubbleSort; +MR]h [  
import org.rut.util.algorithm.support.HeapSort; xig4H7V  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8I8{xt4   
import org.rut.util.algorithm.support.ImprovedQuickSort; z`H|]${X  
import org.rut.util.algorithm.support.InsertSort; - +<ai  
import org.rut.util.algorithm.support.MergeSort; h\T}$jgfWm  
import org.rut.util.algorithm.support.QuickSort; PGd?c#v#  
import org.rut.util.algorithm.support.SelectionSort; J,G/L!Bp  
import org.rut.util.algorithm.support.ShellSort; .R^R32ln  
QXI#gA  =  
/** q}P UwN6  
* @author treeroot mX/'Fta  
* @since 2006-2-2 :>C D;  
* @version 1.0 *epK17i=  
*/ LbkQuq/d  
public class SortUtil { (N6=+dNY  
public final static int INSERT = 1; C>A} e6o  
public final static int BUBBLE = 2; qrHCr:~  
public final static int SELECTION = 3; A&N$=9.N1  
public final static int SHELL = 4; GvzaLEo  
public final static int QUICK = 5; 'QSj-  
public final static int IMPROVED_QUICK = 6; =Q,D3F -+f  
public final static int MERGE = 7; bV$g]->4e  
public final static int IMPROVED_MERGE = 8; uK%0,!q  
public final static int HEAP = 9; ?%cZO "  
g& ou[_A  
public static void sort(int[] data) { /Qu<>#[?  
sort(data, IMPROVED_QUICK); L,yq'>*5s  
} #.<Dq8u  
private static String[] name={ -G[TlH06  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" lT?Vt`==~M  
}; XE'3p6  
(%j V [Q  
private static Sort[] impl=new Sort[]{ A(9$!%#+L  
new InsertSort(), !k<k]^Z\  
new BubbleSort(), vYybQ&E/  
new SelectionSort(), FwE<_hq//  
new ShellSort(), v4qpE!W27~  
new QuickSort(), :x,dYJm  
new ImprovedQuickSort(), dUQ )&Hv  
new MergeSort(), Bx/)Sl@  
new ImprovedMergeSort(), rR4?*90vjj  
new HeapSort() }ssP%c]  
}; W K(GR\@  
00LL&ot  
public static String toString(int algorithm){ mGpBj9jr1  
return name[algorithm-1]; |H(i)yu"5'  
} # uy^AC$  
_Tf %<E  
public static void sort(int[] data, int algorithm) { \#v(f2jPF  
impl[algorithm-1].sort(data); *:% I|5  
} Z,-J tl  
UGxF}Q  
public static interface Sort { %CZGV7JdA  
public void sort(int[] data); VtzBYza  
} tl 9`  
#nQboTB@  
public static void swap(int[] data, int i, int j) { e<{waJ1  
int temp = data; ?e%u[Q0  
data = data[j]; D;hJK-Y  
data[j] = temp; ?pdN!zOeL  
} bZ#KfR  
} th{ie2$  
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