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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。 p|NY.N  
插入排序: v=+3AW-|v  
F6{/iF  
package org.rut.util.algorithm.support; isdNW l  
<RpTk*Yo^=  
import org.rut.util.algorithm.SortUtil; PkZ1Db  
/** U$y wO4.  
* @author treeroot lrwQ >N  
* @since 2006-2-2 ]~VuY:abH  
* @version 1.0 -QR]BD%J*[  
*/ S:Jg#1rww-  
public class InsertSort implements SortUtil.Sort{ ]=ZPSLuEm%  
'h 7x@[|  
/* (non-Javadoc) ,3c25.,*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /er{sKVX<  
*/ Q[aF"5h%  
public void sort(int[] data) { yPe9KN_  
int temp; ,fTC}>s4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >mpNn  
} m+:JNgX6  
} "EA =auN{  
} n qx0#_K-E  
63_#*6Pv28  
} Ayv:Pv@  
V6_5v+n  
冒泡排序: cH$( *k9%M  
dtTfV.y4w  
package org.rut.util.algorithm.support; ]Hq,Pr_+  
akPd#mf  
import org.rut.util.algorithm.SortUtil; Iw`|,-|  
jcvq:i{  
/** l:bbc!3  
* @author treeroot e==/+  
* @since 2006-2-2 #Ef!X  
* @version 1.0 n7Bv~?DM  
*/ mF!4*k  
public class BubbleSort implements SortUtil.Sort{ %Tu(>vnuj  
!.MbPPNp  
/* (non-Javadoc) a&2x;diF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EYZ&%.Sy5  
*/ OwPHp&{ Y  
public void sort(int[] data) { !4gHv4v ;  
int temp; n[r1h=?j3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ujN~l_ 4  
if(data[j] SortUtil.swap(data,j,j-1); {dP6fr1z  
} $)c[FR~a  
} MxI*ml8z?  
} 5Ma."?rW   
} (3Xs  
[{R>'~  
} Z]WX 7d  
__s'/ 6u  
选择排序: |,S]EHIy  
w-$iKtb.  
package org.rut.util.algorithm.support; u|.|dv'mbp  
:xq{\"r  
import org.rut.util.algorithm.SortUtil; "VHT5k  
~`^kP.()  
/** BB9eQ: xO  
* @author treeroot $cuBd  
* @since 2006-2-2 1{]S[\F]  
* @version 1.0 Y,yU460T8  
*/ s]`6u yW"  
public class SelectionSort implements SortUtil.Sort { 2 M\7j  
n@h$V\&\iM  
/* 6/Yo0D>M$  
* (non-Javadoc) 4+nZ4a>LH?  
* |+JO]J#bc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )c1Pj#|  
*/ 92R,o'#  
public void sort(int[] data) { F7w\ctUP  
int temp; 6(t'B!x  
for (int i = 0; i < data.length; i++) { CS*lk!C  
int lowIndex = i; [`E_/95  
for (int j = data.length - 1; j > i; j--) { [Mc Hl1a  
if (data[j] < data[lowIndex]) { H^`J(J+  
lowIndex = j; xluA jOQ6  
} hVT>HER  
} $FIJI^Kd7  
SortUtil.swap(data,i,lowIndex); >Di`zw~  
} *SI,K)BP  
} _*[vKS A&  
3D5adI<aq"  
} !>!jLZ0  
ubsv\[:C  
Shell排序: 7bE`P[  
>gq=W5vN(  
package org.rut.util.algorithm.support; 8'zfq ]g  
&U=_:]/  
import org.rut.util.algorithm.SortUtil; #nft{AN  
-kP2Brm  
/** 9-&@Y  
* @author treeroot .YH#+T'  
* @since 2006-2-2 {|j-e{*  
* @version 1.0 $AvaOI.l  
*/ p`Tl)[*  
public class ShellSort implements SortUtil.Sort{ Y#-c<o}f  
OVgak>$  
/* (non-Javadoc) EG &me  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W>?aZv  
*/ g2}aEfp!H  
public void sort(int[] data) { v;g,qO!LJ  
for(int i=data.length/2;i>2;i/=2){ 8'fF{C  
for(int j=0;j insertSort(data,j,i); RtxAIMzh?  
}  ]SL+ZT  
} PR(KDwsT&l  
insertSort(data,0,1); M&",7CPD(1  
} !Q%r4Nr  
z Z~t ,>  
/** l ObY  
* @param data H15!QxD#  
* @param j N!v>2"x8q  
* @param i [AD%8 H  
*/ #a9R3-aP  
private void insertSort(int[] data, int start, int inc) { \>w 2D  
int temp; <; Td8O89_  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?;(!(<{  
} x 2l}$(7  
} 0|0IIgy  
} kf~>%tES]  
EL2z&  
} 2JeEmG9  
[!} uj`e  
快速排序: B%))HLo'  
(U.VCSn  
package org.rut.util.algorithm.support; nHfAx/9!  
h]|2b0  
import org.rut.util.algorithm.SortUtil; i1b3>H*3  
,y/m5-D!  
/** u V'C_H  
* @author treeroot **6X9ZIX[  
* @since 2006-2-2 :,/ \E  
* @version 1.0 X C390t  
*/ y|9 LtQ  
public class QuickSort implements SortUtil.Sort{ <3=k  
JE$ $6X  
/* (non-Javadoc) LA6Ik_-F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rXe+#`m2  
*/ eB,@oo%  
public void sort(int[] data) { Tn38]UL  
quickSort(data,0,data.length-1); %F;uW[4r  
} SokU9n!  
private void quickSort(int[] data,int i,int j){ 3rX8H`R  
int pivotIndex=(i+j)/2; `@:k*d  
file://swap `sRys oW  
SortUtil.swap(data,pivotIndex,j); Q2@yUDd!  
q^@*k,HG  
int k=partition(data,i-1,j,data[j]); {w99~?  
SortUtil.swap(data,k,j); ;D[I/U  
if((k-i)>1) quickSort(data,i,k-1); (t,|FkVLV  
if((j-k)>1) quickSort(data,k+1,j); [{ A5BE -  
IY2f$YV  
} 1gYvp9Ma  
/** :ZM=P3QZ  
* @param data @Hp=xC9V  
* @param i }k8&T\V!  
* @param j wG22ffaki  
* @return ~%: TE}  
*/ +]VW[ $W  
private int partition(int[] data, int l, int r,int pivot) { n{c-3w.uD  
do{ '}P$hP_d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); cavzXz  
SortUtil.swap(data,l,r); )f%Q7  
} Y3'dV)  
while(l SortUtil.swap(data,l,r); ZQ#AEVI,  
return l; VZA>ErB  
} &=.7-iC|W  
^"$~&\+x5  
} L7.LFWq$S  
;AarpUw'  
改进后的快速排序: o1<Z; 2#  
-9"[/  
package org.rut.util.algorithm.support; #}'sknvM}  
FWyfFCK  
import org.rut.util.algorithm.SortUtil; '494^1"io  
Yb>A?@S  
/** @'?7au ''  
* @author treeroot uF-Rl## >  
* @since 2006-2-2 kmsgaB7?  
* @version 1.0 )7N$lY<  
*/ !f8]gTzN  
public class ImprovedQuickSort implements SortUtil.Sort { ]i'gU(+;`  
Hb9r.;r<EW  
private static int MAX_STACK_SIZE=4096; RsP^T:M}$  
private static int THRESHOLD=10; &-`a`  
/* (non-Javadoc) DGx<Nys@B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i}ti  
*/ to'O;f">n  
public void sort(int[] data) { jR,3 -JQ  
int[] stack=new int[MAX_STACK_SIZE]; ",Fqpu&M  
AaJnRtBS~  
int top=-1; d0 yZ9-t  
int pivot; _ ~E_#cNn  
int pivotIndex,l,r; ]=0$-ImQ@x  
!X/O1PM|  
stack[++top]=0; TZS:(MJ9M  
stack[++top]=data.length-1; 1BA5|  
mF] 8  
while(top>0){ 4ew#@  
int j=stack[top--]; 1cPjgBxv#  
int i=stack[top--]; w<=-n ;2  
G!m;J8#m(  
pivotIndex=(i+j)/2; YU%U  
pivot=data[pivotIndex]; >U'gQS?\]  
[%BWCd8Q~P  
SortUtil.swap(data,pivotIndex,j); U~[ tp1Z)  
g 2&P  
file://partition {(qH8A  
l=i-1; RB/;qdqR  
r=j; `}&}2k  
do{ G_n~1?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 's6hCs&|NV  
SortUtil.swap(data,l,r); &dI;o$t  
} a'A'%+2  
while(l SortUtil.swap(data,l,r); 5Lm<3:7Q+  
SortUtil.swap(data,l,j); e.pq6D5  
WCZeY?_^c  
if((l-i)>THRESHOLD){ [^E{Yz=8,  
stack[++top]=i; |+(Hia,X  
stack[++top]=l-1; [+Y;w`;Fq  
} cvl1 X"  
if((j-l)>THRESHOLD){ !7fVO2m T  
stack[++top]=l+1; AwO'%+Bv  
stack[++top]=j; Hs6}~d  
} .LHzaeJCX  
"?TKz:9r  
} nfzKUJY  
file://new InsertSort().sort(data); y@Q? guB  
insertSort(data); b_j8g{/9  
} /QCyA%y  
/** 04cNi~@m  
* @param data :#zv,U&OC  
*/ \mp5G&+/Q  
private void insertSort(int[] data) { ac??lHtH9  
int temp; 4Z<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bv8GJ #  
} G`r*)pdm  
} @s/0 .7  
} j8"2K^h=  
O:3DIT1#>  
} !2Q>   
z@n779i  
归并排序: bkfk9P  
]w[T_4 l  
package org.rut.util.algorithm.support; [v$NxmRu  
gC qQ~lWZ  
import org.rut.util.algorithm.SortUtil; y()Si\9v  
[r5k8TB1  
/** \9t6 #8  
* @author treeroot %/x%hs;d  
* @since 2006-2-2 qEbzF#a-:  
* @version 1.0 N$SJK  
*/ `Gp!Y  
public class MergeSort implements SortUtil.Sort{ K'zG[[P  
[5Dg%?x  
/* (non-Javadoc) 8^Ov.$rP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dECH/vJ^  
*/ E[RLBO[*n  
public void sort(int[] data) { P7iU_CgyW  
int[] temp=new int[data.length]; >av.pJ(>  
mergeSort(data,temp,0,data.length-1); @j Y_^8#S  
} NJglONO  
1"82JN|!  
private void mergeSort(int[] data,int[] temp,int l,int r){ JrdH6Zg  
int mid=(l+r)/2; *jF VYg  
if(l==r) return ; Z|kMoB  
mergeSort(data,temp,l,mid); = 5 E:CP  
mergeSort(data,temp,mid+1,r); yNb :zoT  
for(int i=l;i<=r;i++){ dn1Tu6f;|  
temp=data; hsUP5_  
} !B3lsXLSY  
int i1=l; zjrr*iw  
int i2=mid+1; 7o4 vf~  
for(int cur=l;cur<=r;cur++){ `(9B(&t^,  
if(i1==mid+1) cs%NsnZ  
data[cur]=temp[i2++]; $Di2B A4Di  
else if(i2>r) d">Ya !W  
data[cur]=temp[i1++]; m9Uoq[1  
else if(temp[i1] data[cur]=temp[i1++]; *0^t;A+  
else |UO1vA@  
data[cur]=temp[i2++]; FDAREE\j  
} jnoFNIW   
} -e{H8ro  
DvuL1Me Ko  
} Vo%UiVHy  
LQMVC^ G  
改进后的归并排序: A_t<SG5  
pP'-}%  
package org.rut.util.algorithm.support; "iof -b=ys  
h,@x5q>g  
import org.rut.util.algorithm.SortUtil; &\C{,:[  
3\,TI`^C  
/** fuH Dif,  
* @author treeroot iDO~G($C  
* @since 2006-2-2 ]'aG oR  
* @version 1.0 / N@0qQ  
*/ (WW,]#^  
public class ImprovedMergeSort implements SortUtil.Sort { Pc]c8~  
|7zm!^t$  
private static final int THRESHOLD = 10; |jV4]7Luq  
'FBvAk6  
/* K@{jY\AZNx  
* (non-Javadoc) (D8'qx-M  
* p;n)YY$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {kJ[)7  
*/ 0nAeeVz|  
public void sort(int[] data) { CSU>nIE0  
int[] temp=new int[data.length]; NUL~zb  
mergeSort(data,temp,0,data.length-1); &F#X0h/m=  
} yB. 6U56  
*OF7 {^~&  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]Ly)%a32  
int i, j, k; WaMn[/{  
int mid = (l + r) / 2; y i@61XI  
if (l == r) 8}\"LXRbo  
return; JmYi&  
if ((mid - l) >= THRESHOLD) +[2lS54"W4  
mergeSort(data, temp, l, mid); <{-DYRiN  
else g1J]z<&  
insertSort(data, l, mid - l + 1); Q|G[9HBI  
if ((r - mid) > THRESHOLD) <E\BKC%M  
mergeSort(data, temp, mid + 1, r); 3!$rp- !<)  
else y6j TT%  
insertSort(data, mid + 1, r - mid); hV8A<VT  
cRg$~rYd  
for (i = l; i <= mid; i++) { 8'cDK[L  
temp = data; mI`dZ3h  
} 9)YG)A~<  
for (j = 1; j <= r - mid; j++) { o!H"~5Trv!  
temp[r - j + 1] = data[j + mid]; x`eYCi  
} (~#PzE :  
int a = temp[l]; cL WM]\Y  
int b = temp[r]; z(%Zji@!N  
for (i = l, j = r, k = l; k <= r; k++) { *@Qt*f  
if (a < b) { "1#,d#Q$  
data[k] = temp[i++]; 3> fuH'=  
a = temp; 5g&'n  
} else { c&_3"2:  
data[k] = temp[j--]; be@MQ}6>  
b = temp[j]; [}AcCXg`L  
} n+i}>3'A  
} 0CN .gu  
} A=3 U4L  
0 s 4j>  
/**  :D/R  
* @param data WMC6 dD_6e  
* @param l 3~S~)quwP  
* @param i k4l72 'P  
*/ x-W0 h  
private void insertSort(int[] data, int start, int len) { D6m>>&E['  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Cv=0&S.  
} oyd{}$71d  
} A6Qi^TI  
} PQs9@]w[  
} C/$IF M<  
I'j? T.  
堆排序: /za,&7sf  
](ninSX1w  
package org.rut.util.algorithm.support; u/zfx ;K  
cP Y^Bf5)  
import org.rut.util.algorithm.SortUtil; aD:+,MZ  
<*\J 6:^n  
/** *5NffiA}-  
* @author treeroot g$97"d'  
* @since 2006-2-2 dvf*w:5K!  
* @version 1.0 7 D^A:f  
*/ *Zvw&y*  
public class HeapSort implements SortUtil.Sort{ prWid3}  
c2U>89LlZ  
/* (non-Javadoc) BCj&z{5"7e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bM'AD[  
*/ B+<k,ad  
public void sort(int[] data) { rx"zqm9 }u  
MaxHeap h=new MaxHeap(); GB=q}@&8p  
h.init(data); qRFN@ID$  
for(int i=0;i h.remove(); : ?V;  
System.arraycopy(h.queue,1,data,0,data.length); 3,[2-obmi  
} `#]\Wnp~y  
|bk*Lgkzw  
private static class MaxHeap{ f.= E.%  
xI@~Ig  
void init(int[] data){ u%pief  
this.queue=new int[data.length+1]; MXy{]o_H~  
for(int i=0;i queue[++size]=data; t'J fiGM  
fixUp(size); nqBu C  
} l;.BlHyu  
} "|.(yN  
cGp^;> ]M  
private int size=0;  xYT.J 6  
xeI{i{8  
private int[] queue; QP#Wfk(C  
a5-\=0L~  
public int get() { "" U_|JH-  
return queue[1]; pd#/;LT  
} )hug<D *h  
HhL%iy1  
public void remove() { 9zJ`;1  
SortUtil.swap(queue,1,size--); 4i,SiFKB  
fixDown(1); zqh{=&Tjx  
} K(gj6SrjV  
file://fixdown +a/o)C{  
private void fixDown(int k) { 0R& U18)y  
int j; @m V C  
while ((j = k << 1) <= size) { x/=j$oA  
if (j < size %26amp;%26amp; queue[j] j++; >v[(w1?rX  
if (queue[k]>queue[j]) file://不用交换 /<0D E22  
break; +&OqJAu  
SortUtil.swap(queue,j,k); yjd'{B9{  
k = j; ??Zmj:8E'  
} A ? M]5d  
} ~t={ \,X\  
private void fixUp(int k) { YJ$ewK4E#.  
while (k > 1) { L2'd sOn  
int j = k >> 1; yf)`jPM1<  
if (queue[j]>queue[k]) (GG"'bYk  
break; l,.?-|Poa  
SortUtil.swap(queue,j,k); d8HB2c5y0i  
k = j; #-T.@a1X  
} |a{]P=<q  
} vC:b?0s#(  
d|]O<]CG_  
} J\3} il N  
GYC&P]  
} gE&W6z0fJ  
v9U(sEDq  
SortUtil: JtpY][}"~3  
IY6_JGe_w  
package org.rut.util.algorithm; ~lqGnNhh 7  
0j(jJAE.  
import org.rut.util.algorithm.support.BubbleSort; jJ!-hg4?]  
import org.rut.util.algorithm.support.HeapSort;  J4"swPf  
import org.rut.util.algorithm.support.ImprovedMergeSort; xn@0pL3B~  
import org.rut.util.algorithm.support.ImprovedQuickSort; o^Ysp&#p  
import org.rut.util.algorithm.support.InsertSort; W@,p9=425  
import org.rut.util.algorithm.support.MergeSort; hF"g 91P  
import org.rut.util.algorithm.support.QuickSort; T:dm0iau  
import org.rut.util.algorithm.support.SelectionSort; 4;RCPC  
import org.rut.util.algorithm.support.ShellSort; ShJK&70O  
k0_$M{@Y  
/** ,6;xr'[o*  
* @author treeroot Xexe{h4t_>  
* @since 2006-2-2 JhCkkw  
* @version 1.0 GrR0RwnH)?  
*/ ~59`S#ax/l  
public class SortUtil { x XM!E 8  
public final static int INSERT = 1; PCPf*G>  
public final static int BUBBLE = 2; {R-82%X  
public final static int SELECTION = 3; X@qk>/  
public final static int SHELL = 4; ^mueFw}\  
public final static int QUICK = 5; ncattp   
public final static int IMPROVED_QUICK = 6; ^2^|AXNES  
public final static int MERGE = 7; ]1d,O^S  
public final static int IMPROVED_MERGE = 8; #RM3^]h  
public final static int HEAP = 9; B>Cs&}Y!  
eR-=<0Iw;  
public static void sort(int[] data) { ^'&iYV  
sort(data, IMPROVED_QUICK); X#DL/#z k  
} sr+gD*@h  
private static String[] name={ px _s@>l`  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3X$Q,  
}; LMFK3Gd[  
TTZ['HP oI  
private static Sort[] impl=new Sort[]{ 2K]IlsMO&  
new InsertSort(), K)/!&{7n}a  
new BubbleSort(), |,;twj[?4  
new SelectionSort(), cXS;z.M\_  
new ShellSort(), 7k[pvd|L  
new QuickSort(), uZ\wwYY#M  
new ImprovedQuickSort(), f4'El2>-86  
new MergeSort(), _k_>aG23  
new ImprovedMergeSort(), . QXG"R  
new HeapSort() u3Usq=Ij{  
}; "($Lx  
dU oWo3r=  
public static String toString(int algorithm){ 'u(=eJ@1  
return name[algorithm-1]; Cs:+93w  
} cgs3qI  
X-kXg)!Bg  
public static void sort(int[] data, int algorithm) { ;Y'8:ncDn  
impl[algorithm-1].sort(data); By?nd)  
} ^^7L"je]g  
5^i.;>(b  
public static interface Sort { i}PK $sa#c  
public void sort(int[] data); 17>5#JLP  
} sULIrYRA  
%cH8;5U40  
public static void swap(int[] data, int i, int j) { *.," N}  
int temp = data; @B,j;2eb  
data = data[j]; 6exI_3A4jh  
data[j] = temp; h6u2j p(+  
} EKZA5J7kn  
} Mv.Ciyc  
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