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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。 \;nD)<)J  
插入排序: >+yqjXRzm  
F% F c+?  
package org.rut.util.algorithm.support; lt@  
m-:8jA?  
import org.rut.util.algorithm.SortUtil; 5}vRo;-  
/** !F=|*j  
* @author treeroot `'z(--J}`  
* @since 2006-2-2 \hjk$Gq  
* @version 1.0 |pfhrwJp  
*/ >t 1_5  
public class InsertSort implements SortUtil.Sort{ 2#>$%[   
..vSL  
/* (non-Javadoc) o?:;8]sr!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;X?Ah  
*/ `,F&y{ A  
public void sort(int[] data) { u5xU)l3  
int temp; BNAguAxWo  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6Cz7A  
} t/l!KdY$  
} FY 1},sq  
}  ioE66-n  
<'PR;g^#  
} v7s ]  
XNc"kp? z  
冒泡排序: .8u$z`j  
d$2@,  
package org.rut.util.algorithm.support; [VY8?y  
A)b)ff ,  
import org.rut.util.algorithm.SortUtil; tIz<+T_  
ig2{lEkF  
/** dzjBUD  
* @author treeroot :BewH?Ku  
* @since 2006-2-2 AzLbD2Pl  
* @version 1.0 8m#}S\m  
*/ 3v8V*48B$  
public class BubbleSort implements SortUtil.Sort{ F/Rng'l  
Cfv L)f  
/* (non-Javadoc) .){e7U6b{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XM$5S+e  
*/ F&W0DaH  
public void sort(int[] data) { !ol hZ  
int temp; m.\ >95!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9 _M H  
if(data[j] SortUtil.swap(data,j,j-1); Ns+)Y^(5  
} ^4xlZouCb  
} &&(4n?   
} uR06&SaA>  
} )@8'k]Glw.  
}<( "0jC  
} ?D*Hl+iu  
?$"x^=te7  
选择排序: T..N*6<X  
4_6W s$x  
package org.rut.util.algorithm.support; RZ#alFL,  
JfZL?D{NM  
import org.rut.util.algorithm.SortUtil; #}[Sj-Vp  
^%K1R;  
/** >,w\lf9  
* @author treeroot rh:s 7  
* @since 2006-2-2 !(MA5L-  
* @version 1.0 Z^/z  
*/ VYl_U?D  
public class SelectionSort implements SortUtil.Sort { fWtb mUq  
?/`C~e<J  
/* o 1 hdO  
* (non-Javadoc) {#dp-5V  
* .c=$ bQ>^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u%+6Mp[E  
*/ E)&NP}k-P  
public void sort(int[] data) { !#,-  
int temp; r+{!@`dYi  
for (int i = 0; i < data.length; i++) { E"9/YWv  
int lowIndex = i; B#qL$M,|  
for (int j = data.length - 1; j > i; j--) { 38x[Ad4%  
if (data[j] < data[lowIndex]) { ^D ]7pe  
lowIndex = j; ~>}dse  
} \j2 : 6]Hm  
} U<ku_(2"#  
SortUtil.swap(data,i,lowIndex); -dc5D@4`#s  
} Q{H!s_6iyv  
} ~.PPf/ Z8]  
!L0E03')k  
} ( )JYN5  
C|.$L<`  
Shell排序: -)y> c  
*@bg/S K%  
package org.rut.util.algorithm.support; EO o'a  
K,lK\^y  
import org.rut.util.algorithm.SortUtil; {a+Fx}W  
bGMeBj"R  
/** >j(I[_g  
* @author treeroot Q>SPV8s   
* @since 2006-2-2 3<KZ.hr  
* @version 1.0 E i\J9zt  
*/ )RAv[U1  
public class ShellSort implements SortUtil.Sort{ SxLHFN]  
C1#o<pv  
/* (non-Javadoc) t?%}hs\!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;3.T* ?|o  
*/ >0g `U  
public void sort(int[] data) { J[& 7,}  
for(int i=data.length/2;i>2;i/=2){ {|Mxvp*Hg  
for(int j=0;j insertSort(data,j,i); /H\^l.|vk  
} 4t +/  
} O)$N}V0  
insertSort(data,0,1); *'s2 K  
} GDo)6du  
#whO2Mv  
/** &dZ.+#8r  
* @param data V\k5h  
* @param j 1eE]4Z4Q  
* @param i QN2*]+/h  
*/ LhVLsa(-%  
private void insertSort(int[] data, int start, int inc) { cdek^/  
int temp; uusY,Dt/9  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -tK;RQYax  
} $ sA~p_]  
} K d`l[56#  
} a!^-~pH:  
<M =W)2D7  
} zal3j^  
(_%JF[W  
快速排序: XDrlJvrPL  
%WJ{IXlz  
package org.rut.util.algorithm.support; bY"eC i{K  
Ol/2%UJXL  
import org.rut.util.algorithm.SortUtil; HAI1%F236  
Q8gdI  
/** JX2 |  
* @author treeroot b]so9aCz  
* @since 2006-2-2 +X%fcoc  
* @version 1.0 fUL{c,7xda  
*/ U"%8"G0)  
public class QuickSort implements SortUtil.Sort{ -pU\"$nuxH  
0-t4+T  
/* (non-Javadoc) GH; F3s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O'&X aaZV  
*/ fdCxMKlu;  
public void sort(int[] data) { <Hr@~<@~  
quickSort(data,0,data.length-1); of[|b{Ze4~  
} yNWbI0a  
private void quickSort(int[] data,int i,int j){ W"}*Q -8W  
int pivotIndex=(i+j)/2; <4!&iU+;  
file://swap N8L)KgM5#7  
SortUtil.swap(data,pivotIndex,j); V"2AN3~&  
H,4,~lv|  
int k=partition(data,i-1,j,data[j]); n_xQSVI0F  
SortUtil.swap(data,k,j); .2(@jx,[  
if((k-i)>1) quickSort(data,i,k-1); :hl}Z n~jt  
if((j-k)>1) quickSort(data,k+1,j); qRP8dH  
9TXm Z  
} +}G>M=t::  
/** k.? T.9  
* @param data &' Nk2{  
* @param i $CQwBsYb=  
* @param j EbwZZSds1  
* @return C(%5,|6  
*/ /J9T=N  
private int partition(int[] data, int l, int r,int pivot) { d@>k\6%j  
do{ 7"CH\*%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); bcx{_&1p  
SortUtil.swap(data,l,r); <1'X)n&Kw$  
} 5f`XFe$8  
while(l SortUtil.swap(data,l,r); cnUU1Uz>  
return l; Nh7!Ah  
} ;uA_gn!  
B,VSFpPx  
} {;z L[AgCg  
h>5~ (n8  
改进后的快速排序: B|q3;P  
! ,(bXa\^  
package org.rut.util.algorithm.support; dXK~ Z:  
Y;/=3T7An  
import org.rut.util.algorithm.SortUtil; IDk:jO  
TeN1\rA,  
/** # V9hG9%8  
* @author treeroot OHtZ"^YG  
* @since 2006-2-2 hDkqEkq1R  
* @version 1.0 Uf]Pd)D  
*/ t+)GB=C  
public class ImprovedQuickSort implements SortUtil.Sort { \tw#p k  
koWb@V]  
private static int MAX_STACK_SIZE=4096; Y ,pS/  
private static int THRESHOLD=10; Mb/6>  
/* (non-Javadoc) , LPFb6o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zH\;pmWiN9  
*/ j n&9<"W  
public void sort(int[] data) { A@Yi{&D_Q]  
int[] stack=new int[MAX_STACK_SIZE]; pvwnza1  
@okm@6J*X  
int top=-1; iN9!?Ov_  
int pivot; _~#C $-T  
int pivotIndex,l,r; X9`C2fyVd  
:;#}9g9  
stack[++top]=0; w-Q 6 -  
stack[++top]=data.length-1; FLnAN;  
wM&x8 <  
while(top>0){ -{amzyvLE  
int j=stack[top--]; me`$5Z`  
int i=stack[top--]; ?28GQyk4  
>dC(~j{  
pivotIndex=(i+j)/2; b%~3+c  
pivot=data[pivotIndex]; R\Ynn^w  
?yM/j7Xn  
SortUtil.swap(data,pivotIndex,j); 2'^OtM,  
N4]6LA6x6  
file://partition [N$_@[  
l=i-1; ;51!a C  
r=j; #&8pp8wd,}  
do{ ,HO/Q6;N  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {8p?we3l1  
SortUtil.swap(data,l,r); gl\{QcI8<  
} d=OO(sf  
while(l SortUtil.swap(data,l,r); I EsD=  
SortUtil.swap(data,l,j); e =Tc(Mwn  
Q c< O; #  
if((l-i)>THRESHOLD){ Pg8=  
stack[++top]=i; 8}`8lOE7  
stack[++top]=l-1; .Fz6+m;Z  
} *M!YQ<7G^d  
if((j-l)>THRESHOLD){ |/Q."d  
stack[++top]=l+1; 6o23#JgN  
stack[++top]=j; LYT<o FE-  
} xcRrI|?eC  
5OqsnL_V  
} tZBE& :l  
file://new InsertSort().sort(data); 9oN'.H^  
insertSort(data); )PNH| h  
} TV>R(D3T/  
/** 8;BwzRtgT  
* @param data `TR9GWU+B  
*/ (2\ekct ^  
private void insertSort(int[] data) { (>lqp%G~  
int temp; ej53O/hP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /@}# K P=  
} cZF;f{t  
} ,^[37/S  
} 0$h$7'a  
6]A\8Ty  
} 7 ,~Krzv  
,ui'^8{gK  
归并排序: jN{xpd  
Jj!tRZT  
package org.rut.util.algorithm.support; 5:3$VWLa <  
T ]nR XW$  
import org.rut.util.algorithm.SortUtil; Vw@x  
8r|  
/** F7u%oLjr  
* @author treeroot (=B7_jrl  
* @since 2006-2-2 ^ /eSby  
* @version 1.0 5*'N Q010  
*/ 6 FxndR;  
public class MergeSort implements SortUtil.Sort{ KFG^vmrn  
UdgI<a~`k6  
/* (non-Javadoc) Uy'ZL(2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n/Z =q?_  
*/ 0~5}F^8[L  
public void sort(int[] data) { 1,D ^,  
int[] temp=new int[data.length]; aL6 5t\2  
mergeSort(data,temp,0,data.length-1); @9 tv N}  
} ?O^:j!C6  
qGUe0(  
private void mergeSort(int[] data,int[] temp,int l,int r){ <.XoC?j  
int mid=(l+r)/2; h0QQP  
if(l==r) return ; AQGE(%X  
mergeSort(data,temp,l,mid); & b2(Y4  
mergeSort(data,temp,mid+1,r); aVL%-Il}  
for(int i=l;i<=r;i++){ xH-k~#  
temp=data; (?wKBUi  
} Mo r-$a8  
int i1=l; #`wfl9tj  
int i2=mid+1; R.$Y1=U6  
for(int cur=l;cur<=r;cur++){ D"aQbQP  
if(i1==mid+1) 6j![m+vo%  
data[cur]=temp[i2++]; l),13"?C(  
else if(i2>r) 5 : >  
data[cur]=temp[i1++]; v333z<<S  
else if(temp[i1] data[cur]=temp[i1++]; I9&<:`  
else / UBAQ8TR  
data[cur]=temp[i2++]; DuZ]g#  
} 0n^j 50Yq  
} J=bOw//  
WuXRL}!\,  
} "2j~3aWj  
vv_?ip:t  
改进后的归并排序: ozwqK oE  
r/:'}os;  
package org.rut.util.algorithm.support; @TG~fJSA12  
)Em,3I/.l  
import org.rut.util.algorithm.SortUtil; o : DnZN  
I#e*,#'S  
/** Mi-9sW  
* @author treeroot +& Qqu`)?F  
* @since 2006-2-2 }('QIvq2  
* @version 1.0 6% axbB  
*/ K?eo)|4)DB  
public class ImprovedMergeSort implements SortUtil.Sort { g 0=t9J  
+T;qvx6  
private static final int THRESHOLD = 10; lK@r?w|<M  
ai2}vR  
/* t":>O0>cz  
* (non-Javadoc) +}'K6x_  
* "FD~XSRL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CtxK{:  
*/ Pk2 "\y@q/  
public void sort(int[] data) { Z)4P>{  
int[] temp=new int[data.length]; NE nP3A  
mergeSort(data,temp,0,data.length-1); x&p=vUuukP  
} w-/Tb~#E  
}k~0R-m  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,PAKPX9v_F  
int i, j, k; G _o4A:2  
int mid = (l + r) / 2;  3".W  
if (l == r) >?x Vr  
return; '1*MiFxKq  
if ((mid - l) >= THRESHOLD) Dne&YVF9V  
mergeSort(data, temp, l, mid); rbWFq|(_  
else 1yf&ck1R  
insertSort(data, l, mid - l + 1); H[oi? {L  
if ((r - mid) > THRESHOLD) ?RyvM_(N6  
mergeSort(data, temp, mid + 1, r); U:(t9NX b  
else ?+_"2XY  
insertSort(data, mid + 1, r - mid); (ZJ_&8C#  
> [7vX m4  
for (i = l; i <= mid; i++) { m 9Q{ )?J7  
temp = data; :eO0{JN4T  
} Ha\hQ'99  
for (j = 1; j <= r - mid; j++) { s=+G%B'  
temp[r - j + 1] = data[j + mid]; rkp0ej2-  
} I}{eYXh  
int a = temp[l]; O%{>Zo_<  
int b = temp[r]; ],m-,K  
for (i = l, j = r, k = l; k <= r; k++) { eSf:[^  
if (a < b) { U)6JJv  
data[k] = temp[i++]; ]5CFL$_Q{  
a = temp; ~*Wb MA  
} else { H2p;J#cv@  
data[k] = temp[j--]; q3t@)+l>*  
b = temp[j]; uWQ.h ,  
} ==9Ez  
} l0V@19Ec  
} N*;/~bt7 P  
H(|v  
/** #{a<{HX  
* @param data qKXn=J/0tA  
* @param l s,= ^V/c  
* @param i 7va%-&.&t  
*/ )c_ll;%  
private void insertSort(int[] data, int start, int len) { _\zf XHp  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \/%mabLK  
} k2a^gCBC  
} CJ>=odK[  
} O jmz/W  
} G})mw  
XafyI*pOX  
堆排序: Ar_/9@n  
5irOK9hK  
package org.rut.util.algorithm.support; ah.Kb(d:  
WJWrLu92\U  
import org.rut.util.algorithm.SortUtil; NgQl;$  
w6tY6bf}  
/** A_+ WY|#M  
* @author treeroot X5=7DE]  
* @since 2006-2-2 O)?0G$0  
* @version 1.0 >'eqOZM  
*/ el<nY"c  
public class HeapSort implements SortUtil.Sort{ rkrt.B  
*9PQJeyR  
/* (non-Javadoc) 6 s/O\A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fr7/%{s  
*/ }9JPSl28Jr  
public void sort(int[] data) { }HzZj;O^2>  
MaxHeap h=new MaxHeap(); 0ni5:tYy  
h.init(data); R_&>iu'[  
for(int i=0;i h.remove(); [S%  
System.arraycopy(h.queue,1,data,0,data.length); t+VPX2  
} _e W*  
<f%9w]  
private static class MaxHeap{ zq#o8))4X  
\GN5Sy]r  
void init(int[] data){ JqO( ]*"Hi  
this.queue=new int[data.length+1]; $i hI Hl6'  
for(int i=0;i queue[++size]=data; C%&7,F7  
fixUp(size); :>5]A6Wi  
} ~tWBCq 6  
} aNz%vbh\  
RDbA"e5x  
private int size=0; f{J7a1 `_  
XN Y(@  
private int[] queue; ME(!xI//JZ  
+q(D]:@,[  
public int get() { .T7ciD  
return queue[1]; T &1sfS,  
} E_z@\z MB  
Zo` ^pQS  
public void remove() { )xeVoAg  
SortUtil.swap(queue,1,size--); 7hc(]8eP  
fixDown(1); t%%I.zIV7  
} `u-}E9{  
file://fixdown n\ZFPXP  
private void fixDown(int k) { 5"sF#Y&  
int j; ifkA3]  
while ((j = k << 1) <= size) { 0-FbV,:;  
if (j < size %26amp;%26amp; queue[j] j++; _i&\G}mrC  
if (queue[k]>queue[j]) file://不用交换 (?Yz#Yf  
break; LTF%b AQ,  
SortUtil.swap(queue,j,k); al2v1.Y}  
k = j; >wn&+%i&  
} W^x[ma z  
} @1pdyKK  
private void fixUp(int k) { B3D4fYQ  
while (k > 1) { J]%P fWV  
int j = k >> 1; `U1"WcN  
if (queue[j]>queue[k]) f,$CiZ"  
break; `4o;Lz~  
SortUtil.swap(queue,j,k); &45.*l|mo  
k = j; 9H<:\-:  
} h ( Z7a%_  
} O;XF'r_  
P _ SJK  
} myYe~f4=HQ  
9'tM65K  
} mb#)w`<  
Yv{AoL~  
SortUtil: 6l=n&YO  
:KFhryN  
package org.rut.util.algorithm; 4]cOTXk9C  
3K'3Xp@A  
import org.rut.util.algorithm.support.BubbleSort; q/[)mr|~  
import org.rut.util.algorithm.support.HeapSort; @cx!m   
import org.rut.util.algorithm.support.ImprovedMergeSort; 6x{B  
import org.rut.util.algorithm.support.ImprovedQuickSort; aRV<y8{9  
import org.rut.util.algorithm.support.InsertSort; 1F=x~FMvY  
import org.rut.util.algorithm.support.MergeSort; 6};Sn/ 8  
import org.rut.util.algorithm.support.QuickSort; HdGy$m`  
import org.rut.util.algorithm.support.SelectionSort; TiOvrp7B  
import org.rut.util.algorithm.support.ShellSort; 9(C Ke,  
a; "+Py  
/** 5=dg4"b]  
* @author treeroot !vsUL-  
* @since 2006-2-2 0ul2rZc  
* @version 1.0 Pvtf_Qo^  
*/ ' ft  |  
public class SortUtil { >Nov9<p  
public final static int INSERT = 1; R(:q^?  
public final static int BUBBLE = 2; )a.U|[:y[+  
public final static int SELECTION = 3; .8,lhcpY  
public final static int SHELL = 4; !,\]> c  
public final static int QUICK = 5; N=wB1gJ  
public final static int IMPROVED_QUICK = 6; &W ~,q(  
public final static int MERGE = 7; XW19hG  
public final static int IMPROVED_MERGE = 8; 8mV35A7l  
public final static int HEAP = 9; F 4k`x/ak  
^PD a  
public static void sort(int[] data) { 0$UE|yDs>  
sort(data, IMPROVED_QUICK); Z6Mh`:7  
} al5?w{us  
private static String[] name={ R4o_zwWgPw  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" / og'W j  
}; Fv3fad@x  
#R)$nv:h?^  
private static Sort[] impl=new Sort[]{ {C<ch@sR  
new InsertSort(), L.8-nTg"y  
new BubbleSort(), s)-=l _4T  
new SelectionSort(), m\Dbb.vBvW  
new ShellSort(), # wG}T .*  
new QuickSort(), 2nw P-i  
new ImprovedQuickSort(), (j'[t  
new MergeSort(), .rS0zU  
new ImprovedMergeSort(), E;+3VJ+F"  
new HeapSort() <$UY{"?  
}; O|8p #  
X&K1>dgWP  
public static String toString(int algorithm){ N[AX29  
return name[algorithm-1]; . [C ~a  
} xL mo?Y*  
fFsA[@5tul  
public static void sort(int[] data, int algorithm) { 2"NJt9w  
impl[algorithm-1].sort(data); ?gTY! ;$P  
} P2lj#aQLS  
:imp~~L;  
public static interface Sort { GU_R6Wt+  
public void sort(int[] data); -{ZRk[>Z  
} <Q%\ pAP}b  
$oh}!Smt  
public static void swap(int[] data, int i, int j) { {| Tl3  
int temp = data; D].1X0^hp  
data = data[j]; w,^!kO0)~8  
data[j] = temp; _PJd1P.k  
} EKgTRRW  
} HogT#BMs  
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