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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。 q%/ciPgE  
插入排序: L,QAE)S'a  
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package org.rut.util.algorithm.support; *"% MT:  
-XSu;'4q  
import org.rut.util.algorithm.SortUtil; 09RJc3XE9  
/** #CM^f^*  
* @author treeroot j+p=ik  
* @since 2006-2-2 =}G `i**  
* @version 1.0 wJb\Q  
*/ 05+uBwH  
public class InsertSort implements SortUtil.Sort{ 1Xv- e8M  
/^ d!$v  
/* (non-Javadoc) _DAAD,'<a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F>F&+63Q-  
*/ f17pwJ~=  
public void sort(int[] data) { N8Mq0Ck{$  
int temp; +QqEUf<U*,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]('isq,P  
} |c]Y1WwDx  
} /y \KLa  
} Ff\U]g  
pFu3FUO*;  
} mxpncM=q  
ZA;wv+hF=  
冒泡排序: )I`6XG  
<.d0GD`^  
package org.rut.util.algorithm.support; 8-HMKD#V  
NINaOs  
import org.rut.util.algorithm.SortUtil; Cu%|}xq  
[y>;  
/** tcg sXB/t  
* @author treeroot }b#KV?xgW  
* @since 2006-2-2 FuYV}C  
* @version 1.0 R ks3L  
*/ h4xRRyK  
public class BubbleSort implements SortUtil.Sort{ C?FUc cI  
#eqy!QdePf  
/* (non-Javadoc) k^pf)*p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =9oN#4mWK  
*/ s -Mzl?o  
public void sort(int[] data) { ?hu$  
int temp; ~6nq$(#  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]i=\5FH e  
if(data[j] SortUtil.swap(data,j,j-1); kpkN GQ2  
} mn=G6h T}W  
} (+Yerc.NQt  
} Jmln*,Ol7  
} h5bQ  
Xm7Nr#  
} HDyus5g  
K4vl#*qn  
选择排序: O;qerE?i`  
X9f!F2x  
package org.rut.util.algorithm.support; ,R j{^-k  
*Mt's[8  
import org.rut.util.algorithm.SortUtil; J`ia6fy.I  
/=x) 9J  
/** 1RtbQ{2F;  
* @author treeroot a& Ti44a[  
* @since 2006-2-2 rZDmZm?=  
* @version 1.0 ,$,6%"'"  
*/ 29?{QJb  
public class SelectionSort implements SortUtil.Sort { /x6,"M[97  
N U*6MT4  
/* xj/ +Z!,9  
* (non-Javadoc) nQc]f*  
* m~fA=#l l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7P`|wNq  
*/ qbjLTE=  
public void sort(int[] data) { zR'lQ<u  
int temp; ,y[wS5li  
for (int i = 0; i < data.length; i++) { +8FlDiP  
int lowIndex = i; :QnN7&j|(w  
for (int j = data.length - 1; j > i; j--) { ?~e 8:/@  
if (data[j] < data[lowIndex]) { _|x b)_  
lowIndex = j; 9=D\xBd|w  
} pJ6Z/3]  
} a;Q6S  
SortUtil.swap(data,i,lowIndex); t)n!];  
} eI@LVi6<b  
} R=IZFwr  
;Cdrjx  
} slV+2b  
C@` eYi  
Shell排序: ^D(N_va<  
,C88%k  
package org.rut.util.algorithm.support; 3,8>\yf`  
5MH\Gq e7  
import org.rut.util.algorithm.SortUtil; ?Sj3-*/?  
SU.T0>w  
/** Si#b"ls'  
* @author treeroot p/B&R@%  
* @since 2006-2-2 5!r?U  
* @version 1.0 !M&L<0b:7e  
*/ cn$E?&-  
public class ShellSort implements SortUtil.Sort{ \4q% n  
AF4:v<EN  
/* (non-Javadoc) (^'TT>2B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RLN>*X  
*/ Gb6t`dSzz  
public void sort(int[] data) { }g:y!p k  
for(int i=data.length/2;i>2;i/=2){ ST3aiyG  
for(int j=0;j insertSort(data,j,i); gG0P &9xz  
} Kc+;"4/#q  
} Ey$J.qw3  
insertSort(data,0,1); j4L ) D  
} n$Z@7r  
#pbPaRJL(  
/** ,[}5@cS  
* @param data Gxu&o%x [  
* @param j dUOvv/,FZT  
* @param i kAbRXID  
*/ [ Y_6PR  
private void insertSort(int[] data, int start, int inc) { A.<HOx&#  
int temp; 4oT1<n`r+  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~9JU_R^%m  
} D.H$4[u;j  
} wt4uzg8  
} P g.PD,&U  
6LRI~*F=3  
} m!3L/UZ  
V3fd]rIP  
快速排序: i $H aE)qZ  
6CBk,2DswI  
package org.rut.util.algorithm.support; L;=:OX 0  
& IVwm"  
import org.rut.util.algorithm.SortUtil; $ Scb8<  
7u]0dHj  
/** t>QAM6[  
* @author treeroot Jw'%[(q Q  
* @since 2006-2-2 +!IIt {u  
* @version 1.0 LC/9)Sh_n  
*/ 60P^aj$V  
public class QuickSort implements SortUtil.Sort{ \x i wp.  
`JyTS~v$  
/* (non-Javadoc) n*G[ZW*Uc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S?Q4u!FC  
*/ S+>1yvr),  
public void sort(int[] data) { Bi9b"*LN  
quickSort(data,0,data.length-1); w*`5b!+/  
} |?6r&bT  
private void quickSort(int[] data,int i,int j){ il `O*6-  
int pivotIndex=(i+j)/2; XQ&iV7   
file://swap %pmowo~{  
SortUtil.swap(data,pivotIndex,j); 5inmFT?9Z  
Q.H y"~  
int k=partition(data,i-1,j,data[j]); nYG$V)iCb  
SortUtil.swap(data,k,j); dg/OjiD[P  
if((k-i)>1) quickSort(data,i,k-1); 0lR/6CB  
if((j-k)>1) quickSort(data,k+1,j); !>T.*8  
fyIL/7hzf4  
} Xxcv 5.ug  
/** 3+_? /}<  
* @param data }R:eKj  
* @param i ^& ZlV  
* @param j ab8uY.j  
* @return *[jG^w0z8~  
*/ VyH'7_aU  
private int partition(int[] data, int l, int r,int pivot) { y6ntGrZ}$  
do{ ^OKCvdS  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Szrr`.']  
SortUtil.swap(data,l,r); 8MgoAX,p  
} )tGeQXVhbJ  
while(l SortUtil.swap(data,l,r); u"r~5  
return l; pOQ'k>!  
} sJ)XoK syW  
,:UoE  
} Z-;<R$  
<@xp. Y  
改进后的快速排序: ;}{xpJ/  
vR<Y1<j  
package org.rut.util.algorithm.support; I`kaAOe  
Bsi HVr  
import org.rut.util.algorithm.SortUtil; Xk%92Pto  
VH7VJ [  
/** #y13(u,dN  
* @author treeroot iLw O4i  
* @since 2006-2-2 wvsKn YKX  
* @version 1.0 !qPVC\l  
*/ YlD ui8.N  
public class ImprovedQuickSort implements SortUtil.Sort { /gT$d2{  
hXdc5 ?i?  
private static int MAX_STACK_SIZE=4096; _#xS1sD  
private static int THRESHOLD=10; @Y+YN;57  
/* (non-Javadoc) <wUDcF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }N^.4HOS8  
*/ h}fz`ti U  
public void sort(int[] data) { d)F~)}TFM  
int[] stack=new int[MAX_STACK_SIZE]; K.c6n,'  
8<ZxE(v  
int top=-1; =!m5'$Uz>  
int pivot; I*_@WoI*  
int pivotIndex,l,r; ^l|{*oj2  
6KPM4#61o  
stack[++top]=0; ;$Q `JN=  
stack[++top]=data.length-1; bI.LE/yk  
K5gh7  
while(top>0){ rtf\{u9 }g  
int j=stack[top--]; X[b=25Ct  
int i=stack[top--]; 1 zIFQ@  
3/V&PDC*'  
pivotIndex=(i+j)/2; .w3.zZ0[  
pivot=data[pivotIndex]; vcs=!Ace  
R{GOlxKs C  
SortUtil.swap(data,pivotIndex,j); ($EA/|z  
t98t&YUpm  
file://partition s*{l}~fPkW  
l=i-1; Pn|A>.)z  
r=j; i-[ic!RnKj  
do{ >2l1t}"\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5Z/xY &  
SortUtil.swap(data,l,r); c'nEbelE  
} /tI8JXcUK  
while(l SortUtil.swap(data,l,r); O@r%G0Jge  
SortUtil.swap(data,l,j); UN#XP$utY  
~pA_E!3W  
if((l-i)>THRESHOLD){ lPyGL-Q  
stack[++top]=i; .&dW?HS  
stack[++top]=l-1; oLK-~[p  
}  (`PgvBL:  
if((j-l)>THRESHOLD){ D@ut -J(.  
stack[++top]=l+1; ]vRte!QJ;  
stack[++top]=j; d2sY.L  
} JVbR5"+.  
s<VNW  
} @NlE2s6a  
file://new InsertSort().sort(data); `Yn:fL7S  
insertSort(data); 7/QQ&7+NkS  
} 9 I>qD  
/** 9qS~-'&q#  
* @param data }&A!h  
*/ $5kb3x<W  
private void insertSort(int[] data) { DXu915  
int temp; FrBoE#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |PR8P!'  
} l"^'uGB'  
} Oz(0$c  
} 1y@d`k`t:  
pEgQ) 9\  
} 8qGK"%{ ~  
("-Co,4ey  
归并排序: "F?p\I)(  
BM5+;h !  
package org.rut.util.algorithm.support; #DK@&Gv  
^\=<geEj  
import org.rut.util.algorithm.SortUtil; "8}p>gS  
As0E'n85  
/** D^ZG-WR  
* @author treeroot G"P@AOw  
* @since 2006-2-2 ggQ/_F8u  
* @version 1.0 Vg'vL[Y  
*/ u6^cLQO+  
public class MergeSort implements SortUtil.Sort{ jp=z ^l  
F]]1>w*/0  
/* (non-Javadoc) xUl=N   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?WPuTPw{  
*/ EH{m~x[Ei  
public void sort(int[] data) { AyHhq8Y  
int[] temp=new int[data.length]; eV:I :::  
mergeSort(data,temp,0,data.length-1); A|>~/OW=@  
} gDbj!(tm  
dsck:e5agZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ V4I5PPz~  
int mid=(l+r)/2; 02B *cz_K  
if(l==r) return ; D2N| A  
mergeSort(data,temp,l,mid); K8[vJ7(!|  
mergeSort(data,temp,mid+1,r); Y,BzBUWK  
for(int i=l;i<=r;i++){ M)4-eo  
temp=data; ~q]@Jp  
} _9yb5_  
int i1=l;  v?Dc3  
int i2=mid+1; FYPv:k   
for(int cur=l;cur<=r;cur++){ dr3j<D-Q  
if(i1==mid+1) x(oL\I_Z  
data[cur]=temp[i2++]; to9~l"n.s  
else if(i2>r) }j<:hD QP  
data[cur]=temp[i1++]; P^9y0Q  
else if(temp[i1] data[cur]=temp[i1++]; |@'/F#T  
else  I/YBL  
data[cur]=temp[i2++]; 8@;|x2=y  
} k1Z"Qmz  
} f_A'.oq+  
}AfX0[!O  
} j9Qd 45  
`pr$l  
改进后的归并排序: 7#/->Y  
a#3+PB #  
package org.rut.util.algorithm.support; Ws;S=|9,7~  
(gW#T\Eln  
import org.rut.util.algorithm.SortUtil; wW2b?b{*Z  
"&h{+DHS  
/** co!o+jP  
* @author treeroot 9!'qLO  
* @since 2006-2-2 f</'=k  
* @version 1.0 ]q!,onJ  
*/ +xoh=m  
public class ImprovedMergeSort implements SortUtil.Sort { 6/{V#.(  
Fuq MT`  
private static final int THRESHOLD = 10; {qxFRi#\k  
WX.6|  
/* QuFzj`(  
* (non-Javadoc) akR+QZ,)  
* ])`+ 78  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x=-dv8N?  
*/ 0,a/t jSr  
public void sort(int[] data) { =VA5!-6<Uq  
int[] temp=new int[data.length]; rl:6N*kK  
mergeSort(data,temp,0,data.length-1); $D;/b+a  
} n^}M*#  
117`=9F  
private void mergeSort(int[] data, int[] temp, int l, int r) { *xHj*  
int i, j, k; =AaTn::e/  
int mid = (l + r) / 2; }ACWSkWK  
if (l == r) (!'=?B "  
return; KWuc*!  
if ((mid - l) >= THRESHOLD) Eo h4#fZ\N  
mergeSort(data, temp, l, mid); ,_SE!iL  
else #B_Em$  
insertSort(data, l, mid - l + 1); 2=R}u-@6p  
if ((r - mid) > THRESHOLD) W=QT-4  
mergeSort(data, temp, mid + 1, r); S  ^5EG;[  
else Ug}dw a  
insertSort(data, mid + 1, r - mid); Sr$&]R]^  
-@*[   
for (i = l; i <= mid; i++) { >.sdLA Si  
temp = data; :vsBobiJ  
} F7o#KN*.]  
for (j = 1; j <= r - mid; j++) { Tt^PiaS!  
temp[r - j + 1] = data[j + mid]; IZ9L ;"}  
} CdB sd  
int a = temp[l]; p~v rr 5  
int b = temp[r]; o<1a]M|  
for (i = l, j = r, k = l; k <= r; k++) { 7E0L-E=.  
if (a < b) { 8]G  
data[k] = temp[i++]; _ ^ JhncL  
a = temp; !V%h0OE\  
} else { whH_<@!  
data[k] = temp[j--]; JXT%@w>I  
b = temp[j]; Z}X oWT2f  
} pt/UY<@yoN  
} /Kw}R5l  
} Kp]\r-5UD>  
%R|_o<(#MJ  
/** L>trLD1pt  
* @param data l g0 'qH8  
* @param l  F,hiKq*  
* @param i v8{ jEAK  
*/ , ZisJksk  
private void insertSort(int[] data, int start, int len) { #\P\(+0K  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]TE(:]o7V  
} J&hzr t  
} a9f!f %9  
} AiF'*!1  
} ,Wbr; zb  
9` a1xnL  
堆排序: Q4H(JD1f)  
h4iz(*  
package org.rut.util.algorithm.support; Y5dt/8Jo  
\OzPDN  
import org.rut.util.algorithm.SortUtil; ,0pCc<  
 }q$6^y  
/** OuZPgN  
* @author treeroot {fd/:B 7T  
* @since 2006-2-2 rT#2'-f  
* @version 1.0 )2pOCAjL2  
*/ l_q=@y  
public class HeapSort implements SortUtil.Sort{ &EUI  
d O})#50f  
/* (non-Javadoc) 1QA{NAnu&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R>C^duos.  
*/ <2.87:  
public void sort(int[] data) { DqH?:`G  
MaxHeap h=new MaxHeap(); d*B^pDf  
h.init(data); *UerLpf  
for(int i=0;i h.remove(); W{El^')F  
System.arraycopy(h.queue,1,data,0,data.length); ^Rpy5/d  
} 4uX|2nJ2!;  
8\lRP,-  
private static class MaxHeap{ mJ #|~I*Z-  
 /# FU"  
void init(int[] data){ NMy+=GZu^  
this.queue=new int[data.length+1]; -%G}T}"_  
for(int i=0;i queue[++size]=data; t| cL!  
fixUp(size); If*+yr|  
} @$*LU:[  
} w;OvZo|  
_8z gaA  
private int size=0; |T; ]%<O3E  
Au\j6mB  
private int[] queue; =xs"<Q*w>  
RE<s$B$[  
public int get() { @CB&*VoB  
return queue[1]; r3}Q1b&  
} 2{Johqf  
*x<3=9V  
public void remove() { W'xJh0o  
SortUtil.swap(queue,1,size--); #Fwf]{J  
fixDown(1); *.,G;EC^  
} pYBY"r  
file://fixdown <E&8g[x6  
private void fixDown(int k) { $sxm MP  
int j; [Yyb)Qf  
while ((j = k << 1) <= size) { vVy X[ZZ  
if (j < size %26amp;%26amp; queue[j] j++; p"dK,A5#)  
if (queue[k]>queue[j]) file://不用交换 x|=]Xxco  
break; J1\H^gyW)  
SortUtil.swap(queue,j,k); uD0<|At/  
k = j; i]{-KZC  
} >qL-a*w:a  
} 2R`dyg  
private void fixUp(int k) { ?= R C?K  
while (k > 1) { 2mt S\bAF  
int j = k >> 1; {/2 _"H3:  
if (queue[j]>queue[k]) |=rb#z&  
break; 3;'RF#VL  
SortUtil.swap(queue,j,k); DGJt$o=&@  
k = j; |Bhj L,  
} <tn6=IV  
} i.5?b/l0  
}~O`(mnD}K  
} \2^_v' >K  
;%<R>gDWv  
} R^f-j-$o]  
\1MMz Z4rf  
SortUtil: 8h '~*  
z#u<]] 5  
package org.rut.util.algorithm; N]|P||fC  
AM:lU  
import org.rut.util.algorithm.support.BubbleSort; *=)kR7,]9d  
import org.rut.util.algorithm.support.HeapSort; >g+e`!;6  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2 )F~  
import org.rut.util.algorithm.support.ImprovedQuickSort; w7e+~8|  
import org.rut.util.algorithm.support.InsertSort; *%aWGAu:  
import org.rut.util.algorithm.support.MergeSort; Z[GeU>?P  
import org.rut.util.algorithm.support.QuickSort; 8`Iz%rw&(J  
import org.rut.util.algorithm.support.SelectionSort; &<Iz?AVr  
import org.rut.util.algorithm.support.ShellSort; *Z}9S9YtN  
gNaB^IY  
/** 8r\;8all  
* @author treeroot Y7GHIzX  
* @since 2006-2-2 @\?QZX(H  
* @version 1.0 "~,3gNTzV  
*/ %SC%#_7  
public class SortUtil { 1$RUhxT  
public final static int INSERT = 1; ;8iK];^  
public final static int BUBBLE = 2; !)//b]  
public final static int SELECTION = 3; g&?RQ  
public final static int SHELL = 4; "V>p  
public final static int QUICK = 5; J5#shs[M:  
public final static int IMPROVED_QUICK = 6; 7f_tH_(  
public final static int MERGE = 7; m IYM+2p  
public final static int IMPROVED_MERGE = 8; (&@,ZI;  
public final static int HEAP = 9; =;m;r!,K  
di|5|bn7  
public static void sort(int[] data) { Z~6PrM-M  
sort(data, IMPROVED_QUICK); O!ngQrI  
} S7kZpD $  
private static String[] name={ ;0JK>c ]#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" d3&l!DoX  
}; kNC]q,ljt5  
aQ#6PO7.Z  
private static Sort[] impl=new Sort[]{ {Q/_I@m].  
new InsertSort(), EF5:$#  
new BubbleSort(), X775j"<d  
new SelectionSort(), i"GCm`  
new ShellSort(), 9*CJWS;  
new QuickSort(), 9 lH00n+'  
new ImprovedQuickSort(), TYu(;~   
new MergeSort(), Q$:>yveR*  
new ImprovedMergeSort(), U%4 s@{7  
new HeapSort() ATkx_1]KM-  
}; )9~-^V0A^>  
%"=qdBuk  
public static String toString(int algorithm){ ?>T (  
return name[algorithm-1]; f~Ve7   
} ?3; 0 SAh  
x~n]r[!L  
public static void sort(int[] data, int algorithm) { w<$0n#5  
impl[algorithm-1].sort(data); v?<Tkw ^F  
} "3e1 7dsY  
2&KM&NX~  
public static interface Sort { 2E_d$nsJ  
public void sort(int[] data); ~`!{5:v  
} 9`|~- b  
o?((FW5.;  
public static void swap(int[] data, int i, int j) { <:!;79T\  
int temp = data; OD yKS;   
data = data[j]; t<H@c9{;*  
data[j] = temp; b6ui&Y8z  
} ,4Qct=%L_  
} .:A&5Y-   
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