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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。 A46z2  
插入排序: y6tzmyg  
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package org.rut.util.algorithm.support; v1wMXOR  
!2>MaV1,  
import org.rut.util.algorithm.SortUtil; ^3?]S{1/#  
/** /ghXI"ChI  
* @author treeroot +HvEiY  
* @since 2006-2-2 ^6tGj+D9  
* @version 1.0 U {Xg#UN  
*/ x TEDC,B  
public class InsertSort implements SortUtil.Sort{ F3j#NCuO=z  
N9 yL(2  
/* (non-Javadoc) gOaL4tu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S?n,O+q  
*/ jt5en;AA[  
public void sort(int[] data) { | wuUH  
int temp; eCHT) 35u  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6'+;5M!  
} C,$$bmS =  
} Q^=drNV  
} w3oh8NRs_  
Ux5pw  
} cC@B\Q  
k4Ed7T-  
冒泡排序: AdV&w: ^yf  
H<bYm]a%  
package org.rut.util.algorithm.support; j t9fcw  
@X\-c2=  
import org.rut.util.algorithm.SortUtil; SJ4[n.tPI  
KneCMFy  
/** uM|*y-4  
* @author treeroot C{7 j<O  
* @since 2006-2-2 eP6`"<UM  
* @version 1.0 HX\^ecZ#E  
*/ xfYDjf :<  
public class BubbleSort implements SortUtil.Sort{ Bo.< 4P  
znm3b8ns  
/* (non-Javadoc) v%8.o%G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Ap-J~4  
*/ kOi@QLdN  
public void sort(int[] data) { Hg<d%7.  
int temp; VnqgN  
for(int i=0;i for(int j=data.length-1;j>i;j--){ k$j4~C'$  
if(data[j] SortUtil.swap(data,j,j-1); Kxs_R#k  
} >6xZF'4  
} JRfG]u6GU  
} CHxu%- g  
} BWRM gN'.  
4H@:|  
} #w_cos[I  
h$3o]~t  
选择排序: 1yHlBeEC  
K1i@.`na/$  
package org.rut.util.algorithm.support; B.)!zv\{  
Lh eOGM  
import org.rut.util.algorithm.SortUtil; DL$O274uZ  
XNODDH   
/** `<}Q4p  
* @author treeroot _`'VOY`o  
* @since 2006-2-2 Wx~N1+  
* @version 1.0 /{h@A~<96  
*/ ;Ih:$"$!  
public class SelectionSort implements SortUtil.Sort { PtP{_9%Dz  
2Fwp\I;  
/* {p -q&k&R|  
* (non-Javadoc) |ipL.<v7  
* -qv*%O@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <0R$yB  
*/ 7Aj o9  
public void sort(int[] data) { >/W  
int temp; f,S,35`qa  
for (int i = 0; i < data.length; i++) { <:(p nw*L  
int lowIndex = i; 0^?:Zds  
for (int j = data.length - 1; j > i; j--) { ]mO$Tg&s~  
if (data[j] < data[lowIndex]) { X9ua&T2(l  
lowIndex = j; }.+{M.[}  
} $Sz@u"ig%  
} M1UabqQ  
SortUtil.swap(data,i,lowIndex); B4fMD]  
} (6b*JQ^^  
} uO=yQ&  
hn-+]Y:  
} zn!H&!8&  
w +pK=R  
Shell排序: &d5n_:^  
R<* c   
package org.rut.util.algorithm.support; H[H+s!)"  
+MHsdeGU1W  
import org.rut.util.algorithm.SortUtil; xLZJ[:gr  
+OEheG8  
/** F@4TD]E0^  
* @author treeroot ;!RS q'L1  
* @since 2006-2-2 $@WqM$  
* @version 1.0 .X2fu/}  
*/ . }#R  
public class ShellSort implements SortUtil.Sort{ Gcu[G]D  
p]z< 43O$  
/* (non-Javadoc) HhZlHL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \L6kCY  
*/ "e)C.#3  
public void sort(int[] data) { h`{agW B  
for(int i=data.length/2;i>2;i/=2){ [9}D+k F  
for(int j=0;j insertSort(data,j,i); #ZzFAt  
} W>^WNo3YQ$  
} & B CA  
insertSort(data,0,1); G&2UXr3  
} q$#5>5&  
|->P|1 P  
/** `Mg&s*  
* @param data {DP%=4  
* @param j c;RL<83:  
* @param i YTb/ LeuT  
*/ O{P@fv%~(o  
private void insertSort(int[] data, int start, int inc) { 3c%dErch  
int temp; |"gg2p  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1u9*)w  
} gfr y5e  
} 7IEG%FY T  
} A(j9T,!  
oR``Jiob|  
} p'@| O q&  
-XuRQ_)nG  
快速排序: .zm/GtOV@  
M/Twtq-`H  
package org.rut.util.algorithm.support; ON.1'Wk?  
!L|}/u3v  
import org.rut.util.algorithm.SortUtil; pgp@Zw)r)k  
%1\MW+  
/** "W"2 Y(  
* @author treeroot \ytF@"7  
* @since 2006-2-2 F\K&$5J{p  
* @version 1.0 6jDHA3  
*/ PN(P$6  
public class QuickSort implements SortUtil.Sort{ 7{"urs7 T  
VLL CdZ%  
/* (non-Javadoc) pbXh}YJ&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )qbjX{GZ7  
*/ -gq,^j5,  
public void sort(int[] data) { L lNd97Z  
quickSort(data,0,data.length-1); Tgf\f%,h  
} sYMgi D  
private void quickSort(int[] data,int i,int j){ F"G]afI9+  
int pivotIndex=(i+j)/2; L\GjG&Y5  
file://swap mi`jY0e2  
SortUtil.swap(data,pivotIndex,j); YA?46[:  
$;k2b4u  
int k=partition(data,i-1,j,data[j]); 2#y-3y<G  
SortUtil.swap(data,k,j); 6=aXz2.f  
if((k-i)>1) quickSort(data,i,k-1); [B2g{8{!  
if((j-k)>1) quickSort(data,k+1,j); CO<P$al  
8lNkY`P7s  
} 3EVAB0/$  
/** Kw/7X[|'G  
* @param data %}`zq8Q;  
* @param i P{2ue`w[  
* @param j 1:.I0x!  
* @return ~uUN\qx52  
*/ j=],n8_i  
private int partition(int[] data, int l, int r,int pivot) { Ra!Br6  
do{ D_)i%k\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g)L?C'BG  
SortUtil.swap(data,l,r); ZcQ@%XY3~  
} bJWPr  
while(l SortUtil.swap(data,l,r); L-,C5^  
return l; 'zUWO_(  
} fzk^QrB  
Zf,9 k".'C  
} VhfM j|  
o`{@':%D`  
改进后的快速排序: uE;bNs'  
o<\u Hr3  
package org.rut.util.algorithm.support; rFJPeK7  
DI )!x {"  
import org.rut.util.algorithm.SortUtil; g> <*qd?t  
izvwXC  
/** ';vL j1v  
* @author treeroot } G3:QD  
* @since 2006-2-2 9&O7F}VP2  
* @version 1.0 p7Xe[94d^  
*/ >[qoNy;  
public class ImprovedQuickSort implements SortUtil.Sort { qhQeQ  
K}feS(Ji  
private static int MAX_STACK_SIZE=4096; x^959QO~  
private static int THRESHOLD=10; ^sP-6 ^  
/* (non-Javadoc) \F'tl{'\@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #GVf+8"  
*/ />13?o#  
public void sort(int[] data) { 2 {I(A2  
int[] stack=new int[MAX_STACK_SIZE]; "C~Zl&3  
<J o\RUx  
int top=-1; ],l}J'.8<V  
int pivot; "<Q,|Md  
int pivotIndex,l,r; >u0B ~9_E  
vIQu"J&fE  
stack[++top]=0; )wb&kug -  
stack[++top]=data.length-1; <l`xP)] X  
p* Q *}V  
while(top>0){ XD8Q2un  
int j=stack[top--]; sWGc1jC?.F  
int i=stack[top--]; VZ1u/O?ub  
fgW>~m.W  
pivotIndex=(i+j)/2; (j%;)PTe+&  
pivot=data[pivotIndex]; I%b}qC"5M  
D\LXjEm e.  
SortUtil.swap(data,pivotIndex,j); P:QSr8K  
<?E~Qc t  
file://partition Oe_*(q&  
l=i-1; R\MFh!6sn  
r=j; ~6!TMVr  
do{ 5f- eWW]!  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tXg>R _\C  
SortUtil.swap(data,l,r); vd FP ^06  
} C_rA'Hy  
while(l SortUtil.swap(data,l,r); >&?k^nI}J  
SortUtil.swap(data,l,j); [IRWm N-  
)Zbrg~-@  
if((l-i)>THRESHOLD){ 6xT" j)h  
stack[++top]=i; 3qVDHDQ?ZV  
stack[++top]=l-1; rsPo~nA  
} ?rSm6V  
if((j-l)>THRESHOLD){ 6)#=@i` \  
stack[++top]=l+1; C'S&  
stack[++top]=j; DRy,n)U&  
}  jT$  
e:T8={LU2W  
} CGCI3Z'  
file://new InsertSort().sort(data); L^%jR=  
insertSort(data); NU/:jr.W#  
} ]dU/;8/%  
/** uk<JV*R=  
* @param data _I<LB0kgf.  
*/ Ef"M e(  
private void insertSort(int[] data) { /s|4aro  
int temp; +)U>mm,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); --BS/L-  
} C/{%f,rU  
} oRZ--1oR_  
} rI;84=v2&9  
fKkH [  
} d'UCPg<Y  
-d8U Hc  
归并排序: 2r*Yd(e  
fb;y*-?#  
package org.rut.util.algorithm.support; K)_DaTmi)  
j3_vh<U\  
import org.rut.util.algorithm.SortUtil; cwC-)#R']  
WcZck{ehd  
/** 89+Q^79m  
* @author treeroot eUZvJTE  
* @since 2006-2-2 Z+M* z;  
* @version 1.0 N799@:.  
*/ $^Z ugD  
public class MergeSort implements SortUtil.Sort{ 9yWQ}h  
>j}.~$6dj_  
/* (non-Javadoc) _I A{I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e)): U  
*/ W"&Y7("y  
public void sort(int[] data) { ITr@;@}c]  
int[] temp=new int[data.length]; kr{eC/Q"  
mergeSort(data,temp,0,data.length-1); ^wTod\y  
} xu(N'l.7&  
)|Xi:Zd5>  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]O 8hkGa  
int mid=(l+r)/2; FNgC TO%  
if(l==r) return ; ,5J}Wo?Q}  
mergeSort(data,temp,l,mid); @p$$BUb  
mergeSort(data,temp,mid+1,r); v#`7,::  
for(int i=l;i<=r;i++){ nAY'1!Oi  
temp=data; l 4e`-7  
} rJws#^ ]  
int i1=l; z]33_[G1U  
int i2=mid+1; 1_V',0|`>  
for(int cur=l;cur<=r;cur++){ JV_V2L1Ut  
if(i1==mid+1) nhb: y  
data[cur]=temp[i2++];  _YPu  
else if(i2>r) KoF_G[m  
data[cur]=temp[i1++]; HCOE'24I  
else if(temp[i1] data[cur]=temp[i1++]; ^f_4w|u,+  
else }Gi4`Es  
data[cur]=temp[i2++]; #}|g8gh  
} V0/O T~gS8  
} x !^u$5c  
CTh!|mG  
} ReZ&SNJ  
ZgH(,g,TU  
改进后的归并排序: s$PPJJT{b  
XPd@>2  
package org.rut.util.algorithm.support; r.#"he_6!.  
_+NM<o#A  
import org.rut.util.algorithm.SortUtil; YfZ96C[a  
f>kW\uC  
/** EI!e0 V1!  
* @author treeroot f.Feo  
* @since 2006-2-2 /+zzZnLl-M  
* @version 1.0 7%F8  
*/ {ZR>`'^:  
public class ImprovedMergeSort implements SortUtil.Sort { hsEQ6  
R\^XF8n6/  
private static final int THRESHOLD = 10; =*Ru 2  
H%^j yGS  
/* zilM+BZ8  
* (non-Javadoc) m%[`NP (  
* X J{b_h#N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p"ElO,\  
*/ '3eL^Aq  
public void sort(int[] data) { Z&[_8Y5j  
int[] temp=new int[data.length]; N"Mw1R4  
mergeSort(data,temp,0,data.length-1); T]0H&Oov  
} A$;"9F@  
),;O3:n  
private void mergeSort(int[] data, int[] temp, int l, int r) { 8DO3L "  
int i, j, k; ne-; gTP;  
int mid = (l + r) / 2; 8 bpYop7 L  
if (l == r) <V_P)b8$1  
return;  HLsG<#  
if ((mid - l) >= THRESHOLD) O;m@fS2%3  
mergeSort(data, temp, l, mid); lOJ3_8  
else f' 28s*n  
insertSort(data, l, mid - l + 1); QxS=W2iN  
if ((r - mid) > THRESHOLD) Qqn9nO9  
mergeSort(data, temp, mid + 1, r); q{E44 eQ7F  
else &|&tPD/dJ  
insertSort(data, mid + 1, r - mid); w/UZ6fu  
J_ y+.p- 5  
for (i = l; i <= mid; i++) { nBo?r}t4  
temp = data; # @~HpqqR  
} qr|v|Ejd~  
for (j = 1; j <= r - mid; j++) { 0oiz V;B5%  
temp[r - j + 1] = data[j + mid]; 1p }:K`#{  
} 0kOl,%Ey  
int a = temp[l]; =>en<#[\:  
int b = temp[r]; N,F$^ q6  
for (i = l, j = r, k = l; k <= r; k++) { d@aPhzLu  
if (a < b) { .|Y&,?k| Y  
data[k] = temp[i++]; 7w?V0pLwn8  
a = temp; N`1W"Rx!  
} else { %{*)-_M  
data[k] = temp[j--]; .lE7v -e  
b = temp[j]; UD}#c:I  
} Z:3SI$tO  
} '#Pg:v_  
} /.>8e%)  
{ M&Vh]  
/** "2 "gTS  
* @param data I/V lH:o  
* @param l EnD }|9  
* @param i .{ +Ob i  
*/ #'lqE)T  
private void insertSort(int[] data, int start, int len) { r< ~pSj  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '7;b+Vbl#  
} ZA{T0:  
} h =E)5&Z  
} rD":Gac  
} zC<k4[.  
Lw_s'QNWR  
堆排序: !gbPxfH:6  
qOM"?av  
package org.rut.util.algorithm.support; *s1^s;LR  
BfUM+RC%5  
import org.rut.util.algorithm.SortUtil; .m/$ku{/J  
`j)S7KN  
/** L$rMfe S  
* @author treeroot ]R?{9H|jwE  
* @since 2006-2-2 %f'mW2  
* @version 1.0 (]gd$BgD  
*/ :+*q,lX8  
public class HeapSort implements SortUtil.Sort{ TVs#,  
3I):W9$Qp  
/* (non-Javadoc) T_3JAH e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XMpa87\  
*/ & c V$`L  
public void sort(int[] data) { , tb\^  
MaxHeap h=new MaxHeap(); DITo.PU  
h.init(data); Ae[Na:G+  
for(int i=0;i h.remove(); {2,vxGi  
System.arraycopy(h.queue,1,data,0,data.length); ~>-MVp  
} *JT,]7>  
tkj QSz  
private static class MaxHeap{ &Ay[mZQ 7  
NcMohpkq  
void init(int[] data){ vj,OX~|  
this.queue=new int[data.length+1]; 43m@4Yb  
for(int i=0;i queue[++size]=data; 6#gS`X23Y  
fixUp(size); LfsqtQ=J`  
} mtd ,m  
} pEp`Z,p  
2*)2c[/0F  
private int size=0; R&MdwTa  
1~aP)q  
private int[] queue; Vz @2_k   
=&~7Q"  
public int get() { [~&yLccN  
return queue[1]; ~OSgpM#O!T  
} b<bj5m4fz>  
[Rxbb+,U  
public void remove() { p'f8?jt  
SortUtil.swap(queue,1,size--); ~H4wsa39  
fixDown(1); o!@}&DE|*L  
} h'm-]v  
file://fixdown E>I\m!ue  
private void fixDown(int k) { hb ="J349  
int j; =`pH2SJT  
while ((j = k << 1) <= size) { z&KrG  
if (j < size %26amp;%26amp; queue[j] j++; iKM!>Fi  
if (queue[k]>queue[j]) file://不用交换 #AO?<L  
break; 0(|Yy/Yq  
SortUtil.swap(queue,j,k); rHaj~s 4  
k = j; )sZJH9[K  
} ! %X#;{  
} Cno+rmsfT  
private void fixUp(int k) { hH(w O\s  
while (k > 1) { U]AJWC6  
int j = k >> 1; .$"13"  
if (queue[j]>queue[k]) q"9 2][}  
break; !*G%vOa  
SortUtil.swap(queue,j,k); N(Sc!rX  
k = j; +oevNM  
} \` U=pZJ  
} XT%\Ce!  
r\T'_wo  
} /nWBol,  
SUC'o"  
} fvBL? x  
@s.civ!Yk  
SortUtil: sXaudT  
N3(.7mxo  
package org.rut.util.algorithm; ORx6r=zg  
qd<-{  
import org.rut.util.algorithm.support.BubbleSort; Lvd es.0|  
import org.rut.util.algorithm.support.HeapSort; cNl NJ  
import org.rut.util.algorithm.support.ImprovedMergeSort; cw3j&k  
import org.rut.util.algorithm.support.ImprovedQuickSort; W7#dc89}  
import org.rut.util.algorithm.support.InsertSort; 8vqx}2  
import org.rut.util.algorithm.support.MergeSort; vdIert?p  
import org.rut.util.algorithm.support.QuickSort; ? FlQ\q  
import org.rut.util.algorithm.support.SelectionSort; |}><)}  
import org.rut.util.algorithm.support.ShellSort; Zk] /m  
|R&cQKaQ`  
/** !rsGCw!Pg  
* @author treeroot ?>s[B7wMp  
* @since 2006-2-2 SceK$  
* @version 1.0 b[KZJLZ)  
*/ ^_gH}~l+U  
public class SortUtil { e);`hNLih  
public final static int INSERT = 1; Z^!% b  
public final static int BUBBLE = 2; Fs(FI\^  
public final static int SELECTION = 3; %k'>bmJ  
public final static int SHELL = 4; <&RpGAk%I  
public final static int QUICK = 5; p?2^JJpUb  
public final static int IMPROVED_QUICK = 6; R8-=N+hX  
public final static int MERGE = 7; ?[<#>,W  
public final static int IMPROVED_MERGE = 8; yu>)[|-  
public final static int HEAP = 9; oJ?,X^~_  
< Dt/JA(p  
public static void sort(int[] data) { GIZw/L7Yb  
sort(data, IMPROVED_QUICK); Ge7Uety  
} Nsn~mY%  
private static String[] name={ cq0-D d9^&  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ryNe=9p  
}; v>0I=ut  
p""\uG'  
private static Sort[] impl=new Sort[]{ +"1fr  
new InsertSort(), .XT]\'vW  
new BubbleSort(), -v! ;  
new SelectionSort(), Ye S5%?Fk  
new ShellSort(), s}F.D^^G  
new QuickSort(), 1ixBwnp?  
new ImprovedQuickSort(), }qT{" *SC  
new MergeSort(), [vqf hpz  
new ImprovedMergeSort(), ;ObrBN,Fu  
new HeapSort() F0kdwN4;  
}; k+BY3a  
]P/i}R:  
public static String toString(int algorithm){ #>M^BOR8  
return name[algorithm-1]; K7X*N  
} )FN\jo!!.  
z HT#bP:o  
public static void sort(int[] data, int algorithm) { ,N1pww?  
impl[algorithm-1].sort(data); N[A9J7}_R  
} ,bzC| AK  
IIN,Da;hD  
public static interface Sort { Re+oCJ  
public void sort(int[] data); ,_ TE@ ]!$  
} 6 2#@Y-5  
L*OG2liJ  
public static void swap(int[] data, int i, int j) { bFhZSk )  
int temp = data; "U!Vdt2vp  
data = data[j]; =~k}XB  
data[j] = temp; EU7nS3K)O~  
} 0t[ 1#!=k  
} pg Q^w0BQV  
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