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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。 -!_8>r;Q4  
插入排序: }~+,x#  
#at`7#K@  
package org.rut.util.algorithm.support; T 'c39  
B2j1G JEO  
import org.rut.util.algorithm.SortUtil; =[]6NjKS,  
/** 2%fIe   
* @author treeroot 2H4vK]]Nl  
* @since 2006-2-2 Bz_'>6w  
* @version 1.0 zsJ# CDm  
*/ p" >*WQ   
public class InsertSort implements SortUtil.Sort{ f/O6~I&g  
e1-tpD:J  
/* (non-Javadoc) HuTtp|zM>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LE<J<~2Z  
*/ ?< b{  
public void sort(int[] data) { J?3/L&seA  
int temp; )pHlWi|h  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); GqRXNs!  
} FiiDmhu  
} I)'bf/6?  
} ujxr/8mjV  
#{|cSaX<  
} Cty#|6 k  
` 'Qb?F6  
冒泡排序: K2 M=)B  
=D$ED^W  
package org.rut.util.algorithm.support; %a~/q0o>  
5_'lu  
import org.rut.util.algorithm.SortUtil; &;-zy%#l  
U)bv,{-q  
/** ,J|,wNDU!K  
* @author treeroot `Fn"QL-  
* @since 2006-2-2 b`-|7<s  
* @version 1.0 @5nFa~*K%  
*/ @/<UhnI  
public class BubbleSort implements SortUtil.Sort{ * HKu%g  
 %nY\"  
/* (non-Javadoc) Pt"H_SW~k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RJ3oI+gI  
*/ pc*)^S  
public void sort(int[] data) { /j GBQ-X  
int temp; hNN[djR  
for(int i=0;i for(int j=data.length-1;j>i;j--){ /dYv@OU?  
if(data[j] SortUtil.swap(data,j,j-1); p@G7}'|eyA  
} V,_m>$Mo  
} ) 6)bI.BY  
} pjFO0h_Y  
} y,nmPX?]n  
VQla.Y  
} V_SH90@)+  
z/{X{+Z  
选择排序: h) Wp  
=Hd yra  
package org.rut.util.algorithm.support; n6% `  
DRQx5fgL  
import org.rut.util.algorithm.SortUtil; J |q(HpB  
#; ?3k uq(  
/** @[3c1B6K  
* @author treeroot S\TXx79PhC  
* @since 2006-2-2 *vaYI3{qN  
* @version 1.0 ps 3 )d  
*/ 3 39q%j$  
public class SelectionSort implements SortUtil.Sort { bGWfMu=n  
%rptI$^*X  
/* _f[Q\gK  
* (non-Javadoc) 0y9 b0G  
* p' >i3T(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .ImaM  
*/ [7v|bd  
public void sort(int[] data) { 5^Qa8yA>7  
int temp; !y _{mE?V(  
for (int i = 0; i < data.length; i++) { _HUbE /  
int lowIndex = i; C[^V\?3ly:  
for (int j = data.length - 1; j > i; j--) { /IpCo  
if (data[j] < data[lowIndex]) { 2 kDsIEA  
lowIndex = j; `} PYltW  
} 7s(tAbPdB  
} )]1hN;Nz  
SortUtil.swap(data,i,lowIndex); 6CBk=)qH  
} dDPQDIx  
} +& r!%j7  
OjUPvR2 0  
} {z FME41>g  
p u(mHB  
Shell排序: F^O83[S  
T0w_d_aS  
package org.rut.util.algorithm.support; lxL5Rit@Px  
KG'i#(u[  
import org.rut.util.algorithm.SortUtil; 6TW7E }a.  
n[ B~C  
/** Uq  .6h  
* @author treeroot A0DGDr PD  
* @since 2006-2-2 /\8I l+0  
* @version 1.0 P"w\hF  
*/ I'uwJy_I\  
public class ShellSort implements SortUtil.Sort{ >pU9}2fpT  
5}#wp4U  
/* (non-Javadoc) ,S-h~x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w"^h<]b  
*/ 9"P|Csj  
public void sort(int[] data) { dVQ[@u1,  
for(int i=data.length/2;i>2;i/=2){ X06Lr!-%  
for(int j=0;j insertSort(data,j,i); I_J&>}V'  
} ]O x5F@  
} BR2Gb~#T  
insertSort(data,0,1); eTuqK23  
} z K<af  
g":[rXvId  
/** 75^6?#GS  
* @param data W:d p(,L  
* @param j A'|!O:s   
* @param i BN_h3|)  
*/ |9I)YD  
private void insertSort(int[] data, int start, int inc) { [oLV,O|s|j  
int temp; Zl9@E;|=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); L)sgW(@2  
} [qYr~:`-[  
} qyH -Z@  
} h|qJ{tUWc$  
`R[Hxi  
} }E 'r?N  
bNea5u##  
快速排序: Aedf (L7\  
xVm-4gB  
package org.rut.util.algorithm.support; _;1{feR_  
d?2V2`6  
import org.rut.util.algorithm.SortUtil; Y %JQ  
V'vR(Wx  
/** AcH-TIgM/  
* @author treeroot H9cPtP~a)  
* @since 2006-2-2 ks4`h>i  
* @version 1.0 V0nQmsP1U  
*/ $T'!??|IF  
public class QuickSort implements SortUtil.Sort{ 6Z2,:j;  
0t <nH%N}^  
/* (non-Javadoc) $83B10OQ&L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '/W$9jm  
*/ ++0)KSvw  
public void sort(int[] data) { %M(RV_R+6  
quickSort(data,0,data.length-1); c3vb~l)  
} cw Obq\  
private void quickSort(int[] data,int i,int j){ aB]0?C y9(  
int pivotIndex=(i+j)/2; 2xI|G 3U  
file://swap 4<efj  
SortUtil.swap(data,pivotIndex,j); `Fy-"Uf  
(j: ptQ2$  
int k=partition(data,i-1,j,data[j]); V>{< pS  
SortUtil.swap(data,k,j); t[^$F,  
if((k-i)>1) quickSort(data,i,k-1); ~3&{`9Y  
if((j-k)>1) quickSort(data,k+1,j); *3GV9'-P  
(f#(B2j  
} yYG<tUG;  
/** h!EA;2yGKa  
* @param data TktH28tK  
* @param i 8t-GsjHb  
* @param j zKJ2 ~=  
* @return .|UQ)J?s  
*/ Z~5) )5Ye;  
private int partition(int[] data, int l, int r,int pivot) { xUo6~9s7  
do{ k:@DK9 "^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +a1x;  
SortUtil.swap(data,l,r); Cm}2>eH  
} OmYVJt_  
while(l SortUtil.swap(data,l,r); V2MOD{Maat  
return l; W'lqNOX[v  
} * QgKo$IF  
yK~=6^M  
} CD|[PkjW  
"LMj,qZ1!  
改进后的快速排序: %`Re {%1;  
tXD$HeBB?  
package org.rut.util.algorithm.support; bzg C+yT  
\o9 \i kR  
import org.rut.util.algorithm.SortUtil; )9QtnM  
\;LDE`Q_x  
/** L4#pMc  
* @author treeroot *H>rvE.K?  
* @since 2006-2-2 X#B b?Pv  
* @version 1.0 :=*de Z<  
*/ 9"[;ld<  
public class ImprovedQuickSort implements SortUtil.Sort { v9*m0|T0M  
vvoxK0  
private static int MAX_STACK_SIZE=4096; / HTY>b  
private static int THRESHOLD=10; GD W@/oQr  
/* (non-Javadoc) 'rQ"Dc1D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A'WR!*Yt  
*/ .g*j]!_]  
public void sort(int[] data) { 7N.b-}$(  
int[] stack=new int[MAX_STACK_SIZE]; >DqF>w.1  
:6^7l/p  
int top=-1; ?$r`T]>`2  
int pivot; 0XHQ 5+"8  
int pivotIndex,l,r; M6Fo.eeK3  
Q?{%c[s  
stack[++top]=0; XYE|=Tr]  
stack[++top]=data.length-1; x0*{oP  
M`xiC  
while(top>0){ gv#\}/->4  
int j=stack[top--]; Y +gY"  
int i=stack[top--]; _T=g?0 q  
VFHd2Ea(  
pivotIndex=(i+j)/2; LF<&gC  
pivot=data[pivotIndex]; ,Kit@`P%  
8`Ya7c>  
SortUtil.swap(data,pivotIndex,j); eim+oms  
my=f}%k=  
file://partition RaZ>.5 D  
l=i-1; 92+8zX  
r=j; c\bL_  
do{ {pzj@b 1S  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0c_xPBbB+  
SortUtil.swap(data,l,r); I`>U#x*  
} v9$!v^U"D  
while(l SortUtil.swap(data,l,r); rr<E#w  
SortUtil.swap(data,l,j); >ZA=9v  
bp1AN9~  
if((l-i)>THRESHOLD){ .8hI ad  
stack[++top]=i; 2h E(h  
stack[++top]=l-1; C*9X;+S0J  
} FhE{khc#  
if((j-l)>THRESHOLD){ 1v o)]ff  
stack[++top]=l+1; azcPeAe  
stack[++top]=j; +2tQ FV;  
} ==[,;g x  
,S)r%[ru^  
} /@os*c|je  
file://new InsertSort().sort(data); +SJ.BmT  
insertSort(data); D$>_W,*V  
} c/{FDN  
/** >.h:Y5  
* @param data ,Z. sGv  
*/ xQy,1f3s+  
private void insertSort(int[] data) { tAX* CMW  
int temp; rS8a/d~;0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B.z$0=b  
} 8v:{BHX  
} ?RRO  
} 0p.bmQSH  
g(7 -3q8eq  
} "4j~2{{ F  
V"FQVtTx7  
归并排序: lame/B&nc  
'U@o!\=a  
package org.rut.util.algorithm.support; $ {Z0@G+  
}5o?7} ?  
import org.rut.util.algorithm.SortUtil; "LyD  
}D/+YG  
/** 0=d2_YzSf  
* @author treeroot  EM ,C  
* @since 2006-2-2 MB plhVK8  
* @version 1.0 Tt;F-  
*/ 7#8Gn=g  
public class MergeSort implements SortUtil.Sort{ =x~I'|%3  
b@:OlZ~ %  
/* (non-Javadoc) eH&F gmU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^aFm6HS1  
*/ 9I/b$$?D  
public void sort(int[] data) { MNT~[Z9L5G  
int[] temp=new int[data.length]; S0$^|/Sr  
mergeSort(data,temp,0,data.length-1); 6iC>CY3CG  
} =:W2NN'  
sFU< PgV  
private void mergeSort(int[] data,int[] temp,int l,int r){ jX53 owZ  
int mid=(l+r)/2; [^H2'&]  
if(l==r) return ; xn8K OwX%  
mergeSort(data,temp,l,mid); jU,Xlgz(A  
mergeSort(data,temp,mid+1,r); j!;LN)s@?  
for(int i=l;i<=r;i++){ "TRS(d|3  
temp=data; ^:nc'C gP  
} jW/WG tz  
int i1=l; qHtQ4_Zn;  
int i2=mid+1; R!nf^*~  
for(int cur=l;cur<=r;cur++){ ?u|??z%  
if(i1==mid+1) ?H{[u rLn  
data[cur]=temp[i2++]; N(/)e  
else if(i2>r) %idBR7?`g  
data[cur]=temp[i1++]; > A#5` $i  
else if(temp[i1] data[cur]=temp[i1++]; &$"#hGg  
else Lp`.fn8Ln  
data[cur]=temp[i2++]; x`CjFaE~F  
} #A63?kDE&&  
} 8-$t7bV5  
!oLn=  
} {I#_0Q,i  
,GbmL8P7Y  
改进后的归并排序: b UG,~\Z  
0RR|!zEu  
package org.rut.util.algorithm.support; z2=bbm:  
`FHudSK  
import org.rut.util.algorithm.SortUtil; F^ q{[Z  
4vhf!!1  
/**  MlO OB  
* @author treeroot -Cf)`/  
* @since 2006-2-2 }$6L]   
* @version 1.0 oOFTQB_6  
*/ nep#L>LP$x  
public class ImprovedMergeSort implements SortUtil.Sort { ttP7-y  
gt kV=V  
private static final int THRESHOLD = 10; |}"YUk^  
%"RJi?  
/* X2w)J?pv  
* (non-Javadoc) X+vKY  
* I8H3*DE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^z,3#gK  
*/ uU  d"l,V  
public void sort(int[] data) { 8NN+Z<  
int[] temp=new int[data.length];  *7m lH  
mergeSort(data,temp,0,data.length-1); TG2#$Bq1  
} {DO9%ej)  
E0HqXd?  
private void mergeSort(int[] data, int[] temp, int l, int r) { o |$D|E  
int i, j, k; Q3@zUjq_Q  
int mid = (l + r) / 2;  A l[ZU  
if (l == r) wO??"${OH  
return; K:Z$V  
if ((mid - l) >= THRESHOLD) 7Sdo*z  
mergeSort(data, temp, l, mid); A U~DbU0O  
else ( eV,f  
insertSort(data, l, mid - l + 1); *&U~Io"U  
if ((r - mid) > THRESHOLD) *>fr'jj1$  
mergeSort(data, temp, mid + 1, r); *^>"  h@J  
else TrI+F+;  
insertSort(data, mid + 1, r - mid); R'BB-  
:e<jD_.X  
for (i = l; i <= mid; i++) { T"wg/mT  
temp = data; mV0,T*}e  
} yC' y>f`H  
for (j = 1; j <= r - mid; j++) { osC?2.  
temp[r - j + 1] = data[j + mid]; !gh8 Qs  
} r$jWjb  
int a = temp[l]; R%r bysP  
int b = temp[r]; Tigw+2  
for (i = l, j = r, k = l; k <= r; k++) { 6St=r)_  
if (a < b) { |Xt G9A>  
data[k] = temp[i++]; I~,.@{4  
a = temp; RpdUR*K9x  
} else { !'f7;%7s  
data[k] = temp[j--]; q4ROuE|d  
b = temp[j]; ~nZcA^b#DQ  
} 5xH=w:  
} "*vrrY  
} 6w.E Sm  
vCa8`m  
/** 3%v)!dTa<^  
* @param data Vl.,e1)6  
* @param l :Cq73:1\B  
* @param i NuZ2,<~9  
*/ ]b- 2:M  
private void insertSort(int[] data, int start, int len) { )O'LE&kQ|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {f06Ki  
} Gxr\a2Z&r%  
} I0XJ& P%  
} (/y8KG 3  
} zt.k Nb  
<4r8H-(%  
堆排序: pcMzLMG<  
!GOaBs  
package org.rut.util.algorithm.support; 0X)vr~`  
+\!.X _Ij  
import org.rut.util.algorithm.SortUtil; ;"dX]":  
}*fBHzNN  
/** '9\cIni0  
* @author treeroot v9(5H Y  
* @since 2006-2-2 Ejug2q  
* @version 1.0 =\Q< TY  
*/ *-0s ` rC  
public class HeapSort implements SortUtil.Sort{ 9 qx4F<   
Q2 q~m8(  
/* (non-Javadoc) e5_Hmuk|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q-x>yau"  
*/ #XQ/y}(  
public void sort(int[] data) { gL<n?FG4b  
MaxHeap h=new MaxHeap(); qu B[S)2}  
h.init(data); %.Y5%T yP  
for(int i=0;i h.remove(); 9f~qD&~  
System.arraycopy(h.queue,1,data,0,data.length); fPe S;  
} EP:`l  
Po?MTA  
private static class MaxHeap{ N+&uR!:.C  
>u=  
void init(int[] data){ "FHJ_$!  
this.queue=new int[data.length+1]; Q,?_;,I}  
for(int i=0;i queue[++size]=data; BN*:*cmUl  
fixUp(size); [f+wP|NKL  
} K0w}l" )A  
} x`E<]z*w}  
mTe3%( LD  
private int size=0; "ESc^28  
- 2)k!5X=  
private int[] queue; pRQ7rT',v  
TV{GHB!p"  
public int get() { BTAbDyH5  
return queue[1]; h)Y] L#R  
} ~  QRjl  
o z*;q]  
public void remove() { gvP-doA7W  
SortUtil.swap(queue,1,size--); N~/ 'EaO  
fixDown(1); z;JV3) E  
} @]qP:h.  
file://fixdown = l(euBb  
private void fixDown(int k) { @a 9.s  
int j; UL[,A+X8D  
while ((j = k << 1) <= size) { j]Gn\QF  
if (j < size %26amp;%26amp; queue[j] j++; !Z_+H<fi+I  
if (queue[k]>queue[j]) file://不用交换 e!6yxL*[@[  
break; { ^o.f  
SortUtil.swap(queue,j,k); l~Jd>9DwY  
k = j; !Yof%%m$;  
} X>I3N?5  
} U["0B8  
private void fixUp(int k) { r+#{\~r7T  
while (k > 1) { x2v0cR"KL  
int j = k >> 1; XFWpHe_ L  
if (queue[j]>queue[k]) $;5Q mKQ'  
break; tW/k  
SortUtil.swap(queue,j,k); EE 9w^.3a  
k = j; `r$7Cc$C  
} ]i {yJ)i  
} vW?\bH7}I  
kZe<<iv  
} puPI ^6y%  
97liSd  
} dWz?`B{'  
[}szM^  
SortUtil: jPSVVOG  
\2@J^O1,  
package org.rut.util.algorithm; .wNXvnWr  
pU_3Z3CeE  
import org.rut.util.algorithm.support.BubbleSort; $0$sM/%  
import org.rut.util.algorithm.support.HeapSort; NP;W=A F  
import org.rut.util.algorithm.support.ImprovedMergeSort; 0AHQ(+Ap  
import org.rut.util.algorithm.support.ImprovedQuickSort; tV !?Ol  
import org.rut.util.algorithm.support.InsertSort; t:2DB)  
import org.rut.util.algorithm.support.MergeSort; @43psq1  
import org.rut.util.algorithm.support.QuickSort; <,CrE5Pl  
import org.rut.util.algorithm.support.SelectionSort; - l X4;  
import org.rut.util.algorithm.support.ShellSort;  VAiJL  
M5{#!d}^D  
/** 1.14tS-}[4  
* @author treeroot w_{tS\  
* @since 2006-2-2 Qvp"gut)%X  
* @version 1.0 s4bV0k  
*/ ROFZ*@CH<  
public class SortUtil { u1meys a{0  
public final static int INSERT = 1; \%<M[r=  
public final static int BUBBLE = 2; }{R*pmv$bN  
public final static int SELECTION = 3; NQ`D"n  
public final static int SHELL = 4; ]5'$EAsuW  
public final static int QUICK = 5; 8m"k3:e^  
public final static int IMPROVED_QUICK = 6; ko9}?qs  
public final static int MERGE = 7; "{~5QO   
public final static int IMPROVED_MERGE = 8; @1CXc"IgA  
public final static int HEAP = 9; C*mVM!D);!  
*}\M!u{J  
public static void sort(int[] data) { Et3I(X3  
sort(data, IMPROVED_QUICK); d?7?tL2  
} `XxnQng  
private static String[] name={ &_L%wV|[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l~E~!MR  
}; t"$~o:U&)  
b`X''6  
private static Sort[] impl=new Sort[]{ m(8Tup|  
new InsertSort(), ]FCP|Jz  
new BubbleSort(), rpKZ>S|7+)  
new SelectionSort(), nJe}U#  
new ShellSort(), i}vJI}S.$  
new QuickSort(), f\_RW;y|m  
new ImprovedQuickSort(), c|/HX%Y  
new MergeSort(), <UGaIb  
new ImprovedMergeSort(), v@zi?D K  
new HeapSort() BpIyw  
}; 4]r_K2.cc  
H9)@q3<  
public static String toString(int algorithm){ 2j+w5KvU  
return name[algorithm-1]; C@XS  
} }xsO^K  
vIpL8B86a  
public static void sort(int[] data, int algorithm) { ZR!8hw8  
impl[algorithm-1].sort(data); AERJ]$\  
} aDdxR:  
*$=i1w  
public static interface Sort {  uo`R  
public void sort(int[] data); yX!u&  
} I/7!5Z*  
t^'nh 1=  
public static void swap(int[] data, int i, int j) { *?<N3Rr*  
int temp = data; x^K4&'</  
data = data[j]; j !*,(  
data[j] = temp; [oh06_rB  
} zA5nr`  
} e \Qys<2r  
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