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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。 *FDz20S  
插入排序: P;0tI;  
c.jq?Q k  
package org.rut.util.algorithm.support; 8}h ^Frh  
h-hU=I8  
import org.rut.util.algorithm.SortUtil; hKjvD.6]%  
/** FV^CSaN[R  
* @author treeroot ;`g\Tu  
* @since 2006-2-2 o+{}O_r  
* @version 1.0 3=~"<f l  
*/ -H~g+i*J  
public class InsertSort implements SortUtil.Sort{ >R3~P~@30  
7t` <`BY^  
/* (non-Javadoc) x-+[gNc 6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vFY/o,b \  
*/ ERQ a,h/  
public void sort(int[] data) { D4'"GaCv  
int temp; E (tdL,m'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g(<02t!OT=  
} m3XL;1y:a  
} x^_Wfkch]  
} EAo7(d@  
9oS\{[x.  
} <K:?<F  
b6_*ljM  
冒泡排序: =:`1!W0I  
T_Q/KhLU  
package org.rut.util.algorithm.support; DrbjqQL+.  
=N01!?{  
import org.rut.util.algorithm.SortUtil; -yfyd$5j  
#C|:]moe  
/** k6rX/ocu  
* @author treeroot * JGm  
* @since 2006-2-2 b,5H|$nLu  
* @version 1.0 #{7=  
*/ q]:+0~cz  
public class BubbleSort implements SortUtil.Sort{ n"Ec%n  
l)D18  
/* (non-Javadoc) [,Ts;Hy6Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N%6jZmKip  
*/ %*OKhrM  
public void sort(int[] data) { {r.#R| 4v  
int temp; m JewUc!<5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6}R^L(^M  
if(data[j] SortUtil.swap(data,j,j-1); vrn I Eur  
} \*6%o0c  
} :Oo  
} kM]:~b2  
} aAO[Y"-:,Y  
xr!FDfM.K  
} N^q*lV#kob  
<oV _EZ  
选择排序: AQ. Y-'\t  
C]*9:lK  
package org.rut.util.algorithm.support; l W'6rat  
(Z.K3  
import org.rut.util.algorithm.SortUtil; K]zBPfx  
FB@c +*1  
/** gqNd@tYI  
* @author treeroot ?PiJ7|  
* @since 2006-2-2 VZYd CZ&l7  
* @version 1.0 E5 H6&XU  
*/ jD0^,aiG  
public class SelectionSort implements SortUtil.Sort { U/,`xA;v>  
*rp@`W5  
/* wQb")3dw  
* (non-Javadoc) 2tC ep  
* g]iWD;61  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EiI3$y3;  
*/ td q;D  
public void sort(int[] data) { T*\'G6e  
int temp; TWl':}  
for (int i = 0; i < data.length; i++) { kP%'{   
int lowIndex = i; 2|tZ xlt-  
for (int j = data.length - 1; j > i; j--) { n?&G>`u*  
if (data[j] < data[lowIndex]) { x '3<F  
lowIndex = j; fS-#dJC";`  
} !40{1U&@a`  
} -x3QgDno  
SortUtil.swap(data,i,lowIndex); B;N40d*W  
} 8~:qn@ Z|E  
} f'Wc_ L)  
sBS\S  
} Nol',^)  
$rs7D}VNc  
Shell排序: T{]Tb=  
p}uL%:Vr  
package org.rut.util.algorithm.support; 9NaC7D$,  
u)&6;A4  
import org.rut.util.algorithm.SortUtil; 5'\/gvxIC  
a~OCo  
/** ,nMLua\  
* @author treeroot P^v`5v  
* @since 2006-2-2 .,l ?z  
* @version 1.0 !fwLC"QC  
*/ Xo(K*eIN  
public class ShellSort implements SortUtil.Sort{ 6 )0$UW  
WXNJc  
/* (non-Javadoc) nfy"M),et  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?Z( 6..&  
*/ -}2q-  
public void sort(int[] data) { CeR4's7  
for(int i=data.length/2;i>2;i/=2){ #E5#{bra  
for(int j=0;j insertSort(data,j,i); \`{ YqOT  
} >~TLgq*  
} XIJ>\ RF  
insertSort(data,0,1); -:pLlN-f  
} itX<!  
Mz40([{  
/** PQ@(p%   
* @param data [rU8%  
* @param j ?.|qRzWL  
* @param i vrGRZa  
*/ iK(n'X5i  
private void insertSort(int[] data, int start, int inc) { Mh>^~;  
int temp; r&0v,WSp&S  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); azPFKg +  
} @]WN|K  
} 7 -gt V#  
} -[`,MZf   
)Y Qtrc\91  
} J.?6a:#bU/  
nE Qw6q~je  
快速排序: :uZcN  
HkJ$r<J2  
package org.rut.util.algorithm.support; zjM+F{P8  
O9p8x2  
import org.rut.util.algorithm.SortUtil; s~]Ri:7~  
cc.z C3Hs3  
/** m]=|%a6  
* @author treeroot vhTte |(  
* @since 2006-2-2 6T"[M  
* @version 1.0 d '4c?vC  
*/ a[xEN7L~4D  
public class QuickSort implements SortUtil.Sort{ YX18!OhQ  
z]=A3!H/Y  
/* (non-Javadoc) /0!6;PC<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 50l=B]M  
*/ ~k+-))pf  
public void sort(int[] data) { [#)-F_S  
quickSort(data,0,data.length-1); `WC~cb\  
} 6 jRF[N8  
private void quickSort(int[] data,int i,int j){ xO'1|b^&  
int pivotIndex=(i+j)/2; /=lrdp!a  
file://swap 3Q~ng2Wv%  
SortUtil.swap(data,pivotIndex,j); puL1A?Y8UM  
|0B h  
int k=partition(data,i-1,j,data[j]); bf'@sh%W  
SortUtil.swap(data,k,j); /AjGj*O  
if((k-i)>1) quickSort(data,i,k-1); Q6RBZucv  
if((j-k)>1) quickSort(data,k+1,j); kE UfQLbn  
Goz9"yazg  
} #J, `a.  
/** JdfjOlEb  
* @param data 87>\wUJ  
* @param i K S,X$)9  
* @param j G7M:LcX  
* @return Hl?\P6   
*/ _E:]qv  
private int partition(int[] data, int l, int r,int pivot) { .AWRe1?  
do{ v\c.xtjI5x  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); bMxzJRrNg  
SortUtil.swap(data,l,r); B+*F?k[  
} 8D;>]>  
while(l SortUtil.swap(data,l,r); c+_F nA  
return l; g Uy >I(  
} @PU%BKe  
,N< xyx.  
} xx#; )]WT  
)`,3/i9C$  
改进后的快速排序: %=]~5a9  
Cc]t*;nU_  
package org.rut.util.algorithm.support; 55zimv&DV  
o D*h@yL  
import org.rut.util.algorithm.SortUtil; km}%7|R?  
J5mMx)t@  
/** Nf}G "!  
* @author treeroot )C<c{mjk(  
* @since 2006-2-2 qI) Yzc/  
* @version 1.0 T,!?+#  
*/ JyjS#BWi  
public class ImprovedQuickSort implements SortUtil.Sort { [q?{e1  
-SlLX\>p  
private static int MAX_STACK_SIZE=4096; 0V}%'Ec<e  
private static int THRESHOLD=10; L/F!Y%=;[  
/* (non-Javadoc) ql2>C.k3L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2Af1-z^^K  
*/ -$QzbRF5R  
public void sort(int[] data) { ?r'rvu'/  
int[] stack=new int[MAX_STACK_SIZE]; H`9E_[  
Wepa;  
int top=-1; ?Sh]m/WZd[  
int pivot; =xw) [  
int pivotIndex,l,r; (m|p|rL  
"/(J*)%{  
stack[++top]=0; |/Ggsfmby  
stack[++top]=data.length-1; <omSK- T-  
qYl%v  
while(top>0){ @tM1e<  
int j=stack[top--]; bvUjH5.7  
int i=stack[top--]; GghZ".O  
W+cmn)8  
pivotIndex=(i+j)/2; xeIt7b?#  
pivot=data[pivotIndex]; Elo m_   
~Z=Q+'Hu0  
SortUtil.swap(data,pivotIndex,j); ^}a..@|%W  
^I5k+cL  
file://partition ol^OvG:TQ  
l=i-1; P@`@?kMU  
r=j; kbN2dL  
do{ Ev,>_1#Xm  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^r?ZrbSbz  
SortUtil.swap(data,l,r); }Cvf[H1+  
} VA&_dU]*  
while(l SortUtil.swap(data,l,r); jav7V"$  
SortUtil.swap(data,l,j); >KNiMW^V  
]t=m  
if((l-i)>THRESHOLD){ K pDKIi  
stack[++top]=i; MD1n+FgTu  
stack[++top]=l-1; QaH32(iH  
} 5*/~) wN\U  
if((j-l)>THRESHOLD){ -v/1R1$e1  
stack[++top]=l+1; Ovxs+mQ  
stack[++top]=j; Nz'fMdaX,  
} pi*cO  
N<zD<q  
} *Ew`Fm H  
file://new InsertSort().sort(data); (oBvpFP33  
insertSort(data); ': 87.8$  
} o+*YX!]#L  
/** 1aP3oXLL  
* @param data g=0`^APql  
*/ _K<H*R  
private void insertSort(int[] data) { j2#RO>`,I  
int temp; Q( U+o-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }xk85*V  
} |C301ENZ  
} =2F;'T\6  
} zVKbM3(^  
*P7 H=Yf&  
} h64<F3}  
&G\Vn,1v  
归并排序: X4_1kY;  
tg_xk+x  
package org.rut.util.algorithm.support; A(V,qw8  
n`8BE9h^  
import org.rut.util.algorithm.SortUtil; J$F 1sy  
{ 0RwjPYp  
/** /H/@7>  
* @author treeroot 4W5[1GE.  
* @since 2006-2-2 84j6.\,  
* @version 1.0 pX8TzmIB0  
*/ H*51GxK  
public class MergeSort implements SortUtil.Sort{ HL]8E}e\"  
aZn]8jC%  
/* (non-Javadoc) K~$A2b95  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hfE5[  
*/ RL4J{4K  
public void sort(int[] data) { {e~#6.$:  
int[] temp=new int[data.length]; io%WV%1_  
mergeSort(data,temp,0,data.length-1); Y)H~*-vGu  
} ~Ap.#VIc'  
s;e%*4  
private void mergeSort(int[] data,int[] temp,int l,int r){ w%~UuJ#i  
int mid=(l+r)/2; JN)@bP  
if(l==r) return ; f8E,.$>  
mergeSort(data,temp,l,mid); iY?J3nxD-:  
mergeSort(data,temp,mid+1,r); @( p9}  
for(int i=l;i<=r;i++){ 5,  "  
temp=data; 6l]jm j)/  
} +-~8t^  
int i1=l; 2T 3tKX  
int i2=mid+1; pse$S=  
for(int cur=l;cur<=r;cur++){ N!!=9'fGF  
if(i1==mid+1) opsjei@  
data[cur]=temp[i2++]; 5QN~^  
else if(i2>r) 3w!8PPl  
data[cur]=temp[i1++]; "`g5iUHqUl  
else if(temp[i1] data[cur]=temp[i1++]; g]&7c:/  
else u#!QIQW  
data[cur]=temp[i2++]; tf[)Q:|  
} +lC?Vpi^  
} hhWIwR  
mO<1&{qMZ  
} y/i{6P2`,D  
nl<TM96  
改进后的归并排序: |?A:[C#X  
u+EZ"p;o  
package org.rut.util.algorithm.support; xnP@ h  
7}#zF]vHNi  
import org.rut.util.algorithm.SortUtil; B^Sxp=~Au  
\.ukZqB3 0  
/** f|f)Kys%5  
* @author treeroot |ht:_l 8  
* @since 2006-2-2 7md,!|m  
* @version 1.0 M/?eDW/  
*/ &~=FX e0S  
public class ImprovedMergeSort implements SortUtil.Sort { +xNV1bM  
O]_a$U*6  
private static final int THRESHOLD = 10; B 703{k  
| KtI:n4d  
/* IVSOSl|  
* (non-Javadoc) ]QC9y:3  
* &fofFVQnW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jlp nR#@  
*/ Sf*1Z~P|  
public void sort(int[] data) { %\"<lyD  
int[] temp=new int[data.length]; UahsX  
mergeSort(data,temp,0,data.length-1); lT^/ 8Z<g  
} -.xiq0  
qXqGhHoe;  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2ieyU5q7#  
int i, j, k; @cB7tY*Ski  
int mid = (l + r) / 2; QjOO^6Fh  
if (l == r) QL]e<2oPJ  
return; jQBL 8<  
if ((mid - l) >= THRESHOLD) H#Hhi<2  
mergeSort(data, temp, l, mid); iX%9$Bft<  
else 7f] qCZ<0V  
insertSort(data, l, mid - l + 1); W6gI#  
if ((r - mid) > THRESHOLD) uwl_TDc>%  
mergeSort(data, temp, mid + 1, r); JAx0(MZO  
else x52#md-Z  
insertSort(data, mid + 1, r - mid); Ty<."dyPW  
&R5zt]4d&  
for (i = l; i <= mid; i++) { A=W:}szt]  
temp = data; _mWVZ1P  
} ]*?lgwE  
for (j = 1; j <= r - mid; j++) { {x{~%)-  
temp[r - j + 1] = data[j + mid]; 7F2 WmMS  
} XEegUTs  
int a = temp[l]; ~+ kfb^<-  
int b = temp[r]; ]f{3_M[  
for (i = l, j = r, k = l; k <= r; k++) { R1$s1@3I|  
if (a < b) { v}LI-~M>U  
data[k] = temp[i++]; 71n3d~!O>  
a = temp; qCkC 2Fy(  
} else { v]Fw~Y7l!  
data[k] = temp[j--]; "%}24t%  
b = temp[j]; GXaPfC0-y  
} @r&*Qsf|   
}  8 X Qo  
} N TcojA{V$  
\5|MW)x  
/** KFg q3snH  
* @param data $J8g)cS  
* @param l / 3eGt7x#  
* @param i GQ(*k)'a  
*/ \sz*M B  
private void insertSort(int[] data, int start, int len) { C(8VXtx_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9>ajhFyOhX  
} ayI<-s-  
} %oB0@&!mS  
} ZIN1y;dJ  
} ,eGguNA9  
GKc?  
堆排序: <?nz>vz  
kXV;J$1  
package org.rut.util.algorithm.support; $Qz<:?D  
|LW5dtQ  
import org.rut.util.algorithm.SortUtil; H#i,Ve '  
C7O8B;  
/** S B~opN  
* @author treeroot zLgc j(;  
* @since 2006-2-2  5@DCo  
* @version 1.0 +e^ CL#Gs  
*/ E{0e5.{  
public class HeapSort implements SortUtil.Sort{ in K]+H]{  
+BeA4d8b  
/* (non-Javadoc) DIABR%0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0W0GSDx  
*/ )DmydyQ'  
public void sort(int[] data) { B}S+/V` Y5  
MaxHeap h=new MaxHeap(); uI$n7\G!  
h.init(data); NN#k^[i1  
for(int i=0;i h.remove(); 4> uNH5  
System.arraycopy(h.queue,1,data,0,data.length); n }b{u@$  
} ^k*%`iQ  
[>N#61CV 5  
private static class MaxHeap{ lz!(OO,g  
6cd!;Ca  
void init(int[] data){ g$ HL::  
this.queue=new int[data.length+1]; No"i6R+  
for(int i=0;i queue[++size]=data; @0]w!q  
fixUp(size); 0C;Js\>3]  
} 8 :WN@  
} h/oun2C  
Fv7]1EO.  
private int size=0; =igTY1|af  
^vxx]Hji  
private int[] queue; ,,H;2xYf  
F!3p )?  
public int get() { O1UArD  
return queue[1]; R%4Yg(-Q  
} @ <3E `j'p  
Q7<Y5+  
public void remove() { oi]XSh[_s  
SortUtil.swap(queue,1,size--); gzlxkv-F{  
fixDown(1); O&MH5^I  
} ;O1jf4y  
file://fixdown LofpBO6^  
private void fixDown(int k) { b}fC' h  
int j; >yr;Y4y7K  
while ((j = k << 1) <= size) { /lbj!\~  
if (j < size %26amp;%26amp; queue[j] j++; W/\pqH  
if (queue[k]>queue[j]) file://不用交换 )H@<A93  
break; <jh7G  
SortUtil.swap(queue,j,k); -.r"|\1X  
k = j; yUWc8]9\W  
} D_?Tj  
} ZR -RzT1  
private void fixUp(int k) { u(FOSmNkN  
while (k > 1) { !zt>& t  
int j = k >> 1; `-%dHvB^R  
if (queue[j]>queue[k])  Cu5_OJ  
break; cpl Ny?UIC  
SortUtil.swap(queue,j,k); Ux1j+}y  
k = j; -8l(eDm"m  
} Gk+R, :  
} sZ~03QvkT  
|||m5(`S  
} ^mjU3q{;  
@Co6$<  
} $3B%4#s  
OwEV$Q  
SortUtil: %f'=9pit  
gxmo 1  
package org.rut.util.algorithm; _p0gXb1m`  
!@])Ut@tN  
import org.rut.util.algorithm.support.BubbleSort; 0ETT@/)]z  
import org.rut.util.algorithm.support.HeapSort; w&f>VB~,1  
import org.rut.util.algorithm.support.ImprovedMergeSort; CVvl &on  
import org.rut.util.algorithm.support.ImprovedQuickSort; W4$aX5ow$  
import org.rut.util.algorithm.support.InsertSort;  S!#5  
import org.rut.util.algorithm.support.MergeSort; 4i.&geX A.  
import org.rut.util.algorithm.support.QuickSort; @54$IhhT~  
import org.rut.util.algorithm.support.SelectionSort; x&^Xgi?  
import org.rut.util.algorithm.support.ShellSort; M*bsA/Z  
j94~c YV  
/** L-)ZjXzk  
* @author treeroot EcX7wrl9x  
* @since 2006-2-2 34X]b[^  
* @version 1.0 eI:x4K,#  
*/ nTc#I~\  
public class SortUtil { -~aG_Bp!($  
public final static int INSERT = 1; Q|P M6ta  
public final static int BUBBLE = 2; WMnSkO  
public final static int SELECTION = 3; W!T[ ^+  
public final static int SHELL = 4; s-5 #P,Lw  
public final static int QUICK = 5; r>! @Z2%s  
public final static int IMPROVED_QUICK = 6; 9(qoME}>=  
public final static int MERGE = 7; ftcLP  
public final static int IMPROVED_MERGE = 8; q+4dHS)x  
public final static int HEAP = 9; 5x|$q kI  
p#Po?  
public static void sort(int[] data) { Q=d:Yz":S  
sort(data, IMPROVED_QUICK); /s%-c!o^  
} )X," NJG  
private static String[] name={ "=K3sk  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V~#5^PF{  
}; I L7kpH+y  
Du +_dr^4  
private static Sort[] impl=new Sort[]{ "=+i~N#Sc  
new InsertSort(), WF*j^ %5  
new BubbleSort(), ?$ov9U_  
new SelectionSort(), ~:k r;n2  
new ShellSort(), )7!,_r  
new QuickSort(), TghT{h@  
new ImprovedQuickSort(), <$hv{a  
new MergeSort(), 0sA`})Dk  
new ImprovedMergeSort(), E+EcXf  
new HeapSort() l%('5oz@\  
}; \1&4wzT  
{>vgtkJ  
public static String toString(int algorithm){ @aN~97 H\  
return name[algorithm-1]; ZvQZD=,F  
} 7Y-Q, ?1  
uH? 4d!G  
public static void sort(int[] data, int algorithm) { #g@4c3um|  
impl[algorithm-1].sort(data); x^_c4,i)  
} a!4p$pR  
nu:l;+,VY  
public static interface Sort { cUP1Uolvn  
public void sort(int[] data); h5T~dGRlR  
} Yc?S<  
!-n* ]C  
public static void swap(int[] data, int i, int j) { >);M\,1\I  
int temp = data; B5+Q%)52  
data = data[j]; g$mMH  
data[j] = temp; bC"h7$3  
} Ac{TqiIv  
} 2Mq@5n  
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