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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。 c+FTt(\8.  
插入排序: HYdM1s6vo  
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package org.rut.util.algorithm.support; zH1 ;h  
kK75(x  
import org.rut.util.algorithm.SortUtil; }d. X2?  
/** g  *,O  
* @author treeroot #L.,aTA<  
* @since 2006-2-2 sa.H,<;  
* @version 1.0 VP1hocW  
*/ d|R-K7 ~~  
public class InsertSort implements SortUtil.Sort{ x;?8Zr  
# xO PF9  
/* (non-Javadoc) R'gd/.[e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) if&bp ,  
*/ (2b${Q@V  
public void sort(int[] data) { cW*v))@2  
int temp; m7k }k)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dXTD8 )&  
} )c11_1;  
} lAnq2j|  
} V*n$$-5 1-  
wNmpUO ?  
} b+~_/;Y9  
Z^'~iU-?  
冒泡排序: T";evM66  
`NtW+v  
package org.rut.util.algorithm.support; vEI{AmogRx  
GFFwk4n1  
import org.rut.util.algorithm.SortUtil; 'HW l_M  
i|{psA  
/** r)gK5Mv  
* @author treeroot XZ%[;[  
* @since 2006-2-2 icb)JZ1K  
* @version 1.0 4M&$wi  
*/ s)WA9PiC  
public class BubbleSort implements SortUtil.Sort{ ~\am%r>  
5 tKgm/  
/* (non-Javadoc) ]njNSn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IR${a)  
*/ aL:|Dr3SX  
public void sort(int[] data) { $I9&cNPv  
int temp; Cf(WO-F^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ # `^nmC/F  
if(data[j] SortUtil.swap(data,j,j-1); cAN!5?D\  
} :E-$:\V0}k  
} xn`)I>v  
} d92Z;FWb  
} }-fHS;/  
BWxfY^,'&6  
} :6Z2@9.}w  
+6uf6&.@~  
选择排序: )h@PRDI_  
6:(s8e  
package org.rut.util.algorithm.support; o9}\vN0F  
{}s/p9F4  
import org.rut.util.algorithm.SortUtil; }.o.*N  
AE:(:U\  
/** L;0 NR(b!  
* @author treeroot Dn)yBA%  
* @since 2006-2-2 _. 9 5>`  
* @version 1.0 U,!qNi}  
*/ ]EHsRd  
public class SelectionSort implements SortUtil.Sort { q0 }u%Yz  
=@d#@  
/* CcUF)$kz  
* (non-Javadoc) w1I07 (  
* FO/cEu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lo!pslqsn  
*/ [yMSCCswW  
public void sort(int[] data) { XncX2E4E  
int temp;  Z}t;:yhR  
for (int i = 0; i < data.length; i++) { *+*W# de.  
int lowIndex = i; ND1hZ3(^  
for (int j = data.length - 1; j > i; j--) { z-MQGq xR  
if (data[j] < data[lowIndex]) { :6o%x0l  
lowIndex = j; {ENd]@N*  
} :#g.%&  
} (2eS:1+'8  
SortUtil.swap(data,i,lowIndex); Z7bJ<TpZ  
} ?wHhBh-Q  
} <P#BQt f  
[y8(v ~H  
} 3: GwX4yW  
f$FO 1B)  
Shell排序: )(,O~w  
4^r6RS@z  
package org.rut.util.algorithm.support; =Xvm#/  
\d;)U4__!  
import org.rut.util.algorithm.SortUtil; +IS6l*_y>6  
,Vq$>T@z  
/** vu)EB!%[  
* @author treeroot '!A}.wF0  
* @since 2006-2-2 {F wvuk  
* @version 1.0 'ge$}L}4  
*/ 9 C)VW  
public class ShellSort implements SortUtil.Sort{ f_)#  
 el2Wk@*  
/* (non-Javadoc) &?y@`',a0{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y-bTKSn  
*/ `xx.,;S  
public void sort(int[] data) { pnuo;rs  
for(int i=data.length/2;i>2;i/=2){ ~qZ6I)?  
for(int j=0;j insertSort(data,j,i); $e+4Kt ,  
} :4AIYk=q  
} CmXLD} L_x  
insertSort(data,0,1); VWzQXo  
} ^.:&ZsqV  
>>$L vQ  
/** &Y^4>y%  
* @param data PESvx>:  
* @param j Je|:\Qk  
* @param i ?GH/W#{o)  
*/ x%s1)\^A  
private void insertSort(int[] data, int start, int inc) { v)np.j0V7  
int temp; E G+/2o+W  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &OJ?Za@p@)  
} hY!ek;/Gc  
} ;:Z5Ft m  
} `^#4okg]  
4!Radl3`  
} {J)%6eL?  
2OpA1$n6  
快速排序: C)c*s C5N  
)PvnB=wy  
package org.rut.util.algorithm.support; 7 q!==P=  
$(gL#"T  
import org.rut.util.algorithm.SortUtil; 7zx xO|p[  
bM"?^\a&Q  
/** P>rRD`Yy\  
* @author treeroot g^H,EaPl  
* @since 2006-2-2 ujnT B*Cqc  
* @version 1.0 I(AlRh  
*/ ?,x\46]>_K  
public class QuickSort implements SortUtil.Sort{ ~]?s A{  
SW%}S*h  
/* (non-Javadoc) 5eL b/,R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y2tVq})!  
*/ QuEX|h,F  
public void sort(int[] data) { C9?mxa*z  
quickSort(data,0,data.length-1); EVLL,x.~:z  
} #lMcAYH,  
private void quickSort(int[] data,int i,int j){ ;`^_9 K  
int pivotIndex=(i+j)/2; x2t&Wpvt  
file://swap sN8pwRjb  
SortUtil.swap(data,pivotIndex,j); ##BbR  
 I!?Xq  
int k=partition(data,i-1,j,data[j]); wbJBGT{sm  
SortUtil.swap(data,k,j); `Y.~eE  
if((k-i)>1) quickSort(data,i,k-1);  &lU\9  
if((j-k)>1) quickSort(data,k+1,j); q#AIN`H  
,+ IFV  
} S'^ q  
/** ;o'r@4^&$R  
* @param data CyLwCS{V\  
* @param i d+G%\qpzQ  
* @param j DzMg^Kp  
* @return E9mu:T  
*/ h2x9LPLBxT  
private int partition(int[] data, int l, int r,int pivot) { baD063P;  
do{ bK!h{Rr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5?H wM[`  
SortUtil.swap(data,l,r); N@tKgx  
} ~tWh6-:|{J  
while(l SortUtil.swap(data,l,r); c_ncx|dUs  
return l; xDU \mfeGj  
} a9;KS>~bq  
OQfFS+6  
} hFm^Fy[R  
c*7|>7C$i  
改进后的快速排序: G=[<KtWa  
-a@e28Y  
package org.rut.util.algorithm.support; 3QBzyJW f  
,ja!OZ0$  
import org.rut.util.algorithm.SortUtil; RtR@wZ2\s  
sQA_6]`  
/** AB\Ya4O"9  
* @author treeroot )%S@l<%@?  
* @since 2006-2-2 'u x!:b"  
* @version 1.0 `1P|<VbZ  
*/ $%cHplQz5  
public class ImprovedQuickSort implements SortUtil.Sort { ms5?^kS2O  
 s&pnB  
private static int MAX_STACK_SIZE=4096; 9s_^?q  
private static int THRESHOLD=10; tqpO3  
/* (non-Javadoc) @Q,Q"c2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \~A qA!)6  
*/ ^CLQs;zXE  
public void sort(int[] data) { s !?uLSEdb  
int[] stack=new int[MAX_STACK_SIZE]; L(C`<iE&3  
;AJQ2  
int top=-1; >w<w*pC  
int pivot; @%x2d1FS  
int pivotIndex,l,r; nS3Aadm  
d/yF}%0QI  
stack[++top]=0; NjZ~b/  
stack[++top]=data.length-1; ^wWbW&<Tg  
9MfU{4:;I  
while(top>0){ /;(ji?wN  
int j=stack[top--]; JMt*GFd  
int i=stack[top--]; OS; T;  
@ :Zk,   
pivotIndex=(i+j)/2; P~{8L.w!>W  
pivot=data[pivotIndex]; sw}O g`U  
u$^tRz9  
SortUtil.swap(data,pivotIndex,j); WN=0s  
0D2I)E72o  
file://partition Dh8'og)7  
l=i-1; 04dz ?`HuB  
r=j; -!_8>r;Q4  
do{ HdxP:s.T  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); R)k\  
SortUtil.swap(data,l,r); I[k"I(  
} xrvM}Il  
while(l SortUtil.swap(data,l,r); 1Zn8CmE V  
SortUtil.swap(data,l,j); R`c[ ?U  
DNq(\@x[!  
if((l-i)>THRESHOLD){ s*la`(x  
stack[++top]=i; l[:Aq&[o3  
stack[++top]=l-1; >-N(o2j3  
} M{5AQzvs  
if((j-l)>THRESHOLD){ ~x8nC%qPvq  
stack[++top]=l+1; pAatv;Ex  
stack[++top]=j; uEJ8Lmi  
} xA(z/%  
lh'S_p8g  
} y8s!sO  
file://new InsertSort().sort(data); _xv3UzD  
insertSort(data); exhU!p8  
} =w+8q1!o  
/** :K^J bQ  
* @param data V2}\]x'1  
*/ PhC3F4  
private void insertSort(int[] data) { :CE4< {V  
int temp; KL=<s#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I<940PZ  
} edo)W mn  
} x ']'ODs  
} )  FR7t  
c$ZV vu  
} =^u;uS[IW  
{V6pC  
归并排序: G~<UP(G  
wUCxa>h'  
package org.rut.util.algorithm.support; q5R| ^uf  
}?9&xVh?\  
import org.rut.util.algorithm.SortUtil; ZEI,9`t!  
jj[6oNKE1  
/** &t9 V  
* @author treeroot =p'+kS+  
* @since 2006-2-2 JnsJ]_<  
* @version 1.0 r+Ki`HD%  
*/ O<cP1TF  
public class MergeSort implements SortUtil.Sort{ ;`#R9\C=h  
;Z{D@g+  
/* (non-Javadoc) ElQ?|HsQ6p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7v%c.  
*/ P'U2hCif  
public void sort(int[] data) { C*(  
int[] temp=new int[data.length]; W\kli';jyC  
mergeSort(data,temp,0,data.length-1); y,nmPX?]n  
} VQla.Y  
iwJ_~   
private void mergeSort(int[] data,int[] temp,int l,int r){  JaY"Wfc  
int mid=(l+r)/2; v~Q'm1!O4\  
if(l==r) return ; uAPVR  
mergeSort(data,temp,l,mid); :82h GU  
mergeSort(data,temp,mid+1,r); 2 DW @}[G  
for(int i=l;i<=r;i++){ v3-' G gM  
temp=data; E7A!,A&>  
} m]2xOR_  
int i1=l; {=[>N>"  
int i2=mid+1; 3^y(@XFt  
for(int cur=l;cur<=r;cur++){ z l r !   
if(i1==mid+1) l\s!A&L  
data[cur]=temp[i2++]; 0ae8Xm3J@R  
else if(i2>r) Q>%n&;:  
data[cur]=temp[i1++]; [ /o'l:  
else if(temp[i1] data[cur]=temp[i1++]; q ;'f3Y  
else |GnTRahV.  
data[cur]=temp[i2++]; SQ>i:D;  
} SL4?E<Jb  
} qG6s.TcG  
sP(+Z^/  
} 5Ml=<^  
HK!ecQ^+  
改进后的归并排序: 6$r\p2pi0  
)]1hN;Nz  
package org.rut.util.algorithm.support; 6CBk=)qH  
dDPQDIx  
import org.rut.util.algorithm.SortUtil; _B^zm-}8|B  
{.:$F3T  
/** SB\%"nnV  
* @author treeroot E^i]eK*"  
* @since 2006-2-2 Q7865  
* @version 1.0 Py)ZHML  
*/ IO+]^nY `  
public class ImprovedMergeSort implements SortUtil.Sort { 7QsD"rL  
_>- D*l  
private static final int THRESHOLD = 10; F_ F"3'[  
So aqmY;+  
/* !a@)6or  
* (non-Javadoc) j!u)V1,  
* L80(9Y^xn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 79h~w{IT@  
*/ VPUVPq~&  
public void sort(int[] data) { EA& 3rI>U)  
int[] temp=new int[data.length]; UD.b b  
mergeSort(data,temp,0,data.length-1); )j_El ]?  
} c5YPV"X  
Lzq/^&sc(  
private void mergeSort(int[] data, int[] temp, int l, int r) { 8-2 `S*  
int i, j, k; L)sgW(@2  
int mid = (l + r) / 2; ot^pxun  
if (l == r) YFO{i-*q  
return; 8`q7Yss6F  
if ((mid - l) >= THRESHOLD) kWzN {]v  
mergeSort(data, temp, l, mid); YlHP:ZW-cu  
else I~GF%$-G  
insertSort(data, l, mid - l + 1); &R94xh%@(  
if ((r - mid) > THRESHOLD) fvkcJwkc  
mergeSort(data, temp, mid + 1, r); H9cPtP~a)  
else [xMa^A>p  
insertSort(data, mid + 1, r - mid); fj_23{,/"g  
V ;T :Q%  
for (i = l; i <= mid; i++) { jj5S+ >4  
temp = data; }47h0 i  
} 2B,O/3y  
for (j = 1; j <= r - mid; j++) { ^#/FkEt7bp  
temp[r - j + 1] = data[j + mid]; r"7n2   
} % Y^J''  
int a = temp[l]; R?{+&r.X  
int b = temp[r]; isQ(O  
for (i = l, j = r, k = l; k <= r; k++) { t'qYM5  
if (a < b) { rpR${%jc  
data[k] = temp[i++]; "/W[gP[y%  
a = temp; 4QL>LK  
} else { *r7v Dc  
data[k] = temp[j--]; zKJ2 ~=  
b = temp[j]; =&HLz 7|  
} tdy2ZPVtTV  
} gAqK)@8-  
} #~u0R>=  
LFp "Waiv  
/** V2MOD{Maat  
* @param data W'lqNOX[v  
* @param l * QgKo$IF  
* @param i yK~=6^M  
*/ iG N\ >m}  
private void insertSort(int[] data, int start, int len) { _fGTTw(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); cnv>&6a)  
} ZO0 Ee1/  
} %,$n^{v  
} K5""%O+  
} {z#2gc'Q  
#/)t]&n  
堆排序: *XVwTW[a  
A4K.,bZ   
package org.rut.util.algorithm.support; {$*N1$(%  
).k DY ?s  
import org.rut.util.algorithm.SortUtil; JxAQ,oOO  
qWt}8_"  
/** -yYdj1y;  
* @author treeroot  N;7/C  
* @since 2006-2-2 `8:0x?X  
* @version 1.0 nwRltK  
*/ "q@m6fs  
public class HeapSort implements SortUtil.Sort{ c OYD N[k  
okNo- \Dh!  
/* (non-Javadoc) G0cG%sIl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tkbao D  
*/ I[ \~ pi,  
public void sort(int[] data) { UM}u(;oo%)  
MaxHeap h=new MaxHeap(); $vO&C6m$  
h.init(data); {Kz,_bo  
for(int i=0;i h.remove(); -%K!Ra\W  
System.arraycopy(h.queue,1,data,0,data.length); jmok]-pC  
} f8 d 3ZK  
ny={OhP-  
private static class MaxHeap{ ~E<2gMKjO  
d:H'[l.F%  
void init(int[] data){ YO6BzS/~  
this.queue=new int[data.length+1]; cTqkM@S  
for(int i=0;i queue[++size]=data; cNs'GfD}  
fixUp(size); !3v&+Jrf6  
} (~T*yH ~  
} 92+8zX  
c\bL_  
private int size=0; {pzj@b 1S  
0c_xPBbB+  
private int[] queue; I`>U#x*  
v9$!v^U"D  
public int get() { rr<E#w  
return queue[1]; &4#Zi.]  
} [,%=\%5  
l6viP}R  
public void remove() { 8xpplo8  
SortUtil.swap(queue,1,size--); xNP_>Qa~  
fixDown(1); 7ubz7*  
} p7?  
file://fixdown ~6vz2DuB=  
private void fixDown(int k) { >yIJ8IDF  
int j; xo:kT)  
while ((j = k << 1) <= size) { hy;VvAH 5  
if (j < size %26amp;%26amp; queue[j] j++; !<bwg  
if (queue[k]>queue[j]) file://不用交换 !_S>ER  
break; V5|ANt  
SortUtil.swap(queue,j,k); [U\?+@E*  
k = j; D}-.<  
} XQ}Zr/f6  
} Fsx?(?tCMo  
private void fixUp(int k) { 4 1_gak;  
while (k > 1) { *O?c~UJhhV  
int j = k >> 1; _n&Nw7d2 M  
if (queue[j]>queue[k]) ngY%T5-  
break; n,la<N]  
SortUtil.swap(queue,j,k); {Gxe%gu6K  
k = j; 7  ,Rg~L  
} :Pud%}'  
} c :R?da  
J~YT~D 2L  
} WJ7|0qb  
'<Z[e`/  
} ^0VL](bD>  
?KT{H( rU  
SortUtil: R1jl<=  
{]vD@)k  
package org.rut.util.algorithm; >1y6DC  
?ukw6T  
import org.rut.util.algorithm.support.BubbleSort; ?Ua,ba*  
import org.rut.util.algorithm.support.HeapSort; Tc2.ciU  
import org.rut.util.algorithm.support.ImprovedMergeSort; VYyija:  
import org.rut.util.algorithm.support.ImprovedQuickSort; W,q @ww u  
import org.rut.util.algorithm.support.InsertSort; gN&i &%*!  
import org.rut.util.algorithm.support.MergeSort; pO]gf$  
import org.rut.util.algorithm.support.QuickSort; zF&VzNR2  
import org.rut.util.algorithm.support.SelectionSort; T U%@_vYR  
import org.rut.util.algorithm.support.ShellSort; OvdT* g=8*  
u\R?(G&  
/** Sb.8d]DW  
* @author treeroot :t?B)  
* @since 2006-2-2 5*0zI\  
* @version 1.0 ,'#TdLe  
*/ 7y=>Wa?T[  
public class SortUtil { ]`^! ]Ql  
public final static int INSERT = 1; M  .#}  
public final static int BUBBLE = 2; 3? {AGJ1  
public final static int SELECTION = 3; k.T=&0J_1  
public final static int SHELL = 4; 7Z-j'pq  
public final static int QUICK = 5; Z%T Ajm  
public final static int IMPROVED_QUICK = 6; Sn CwoxK  
public final static int MERGE = 7; : =QX^*  
public final static int IMPROVED_MERGE = 8; qHtQ4_Zn;  
public final static int HEAP = 9; R!nf^*~  
1/_g36\l$  
public static void sort(int[] data) { t0)1;aBZ  
sort(data, IMPROVED_QUICK); 8`=?_zF  
} {@Wv@H+4  
private static String[] name={ %idBR7?`g  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "W<Y1$Y=Y  
}; 'uPAG;)m  
P5S ]h  
private static Sort[] impl=new Sort[]{ k.@![w\ea  
new InsertSort(), Z9{~t  
new BubbleSort(), Hq@+m!  
new SelectionSort(), !oLn=  
new ShellSort(), sJHVnMA  
new QuickSort(), 4WT[(  
new ImprovedQuickSort(),  ZR.k'  
new MergeSort(), !\4x{Wa]  
new ImprovedMergeSort(), "hkcN+=  
new HeapSort() =C\Tl-$\f  
}; \Lx=iKs<  
rb?7i&-  
public static String toString(int algorithm){ <O#&D|EMd|  
return name[algorithm-1]; )XI[hVUA  
} X1o",,N^M  
7*:zN  
public static void sort(int[] data, int algorithm) { nep#L>LP$x  
impl[algorithm-1].sort(data); ttP7-y  
}  Spm 0`  
"k zKQ~  
public static interface Sort { *D5 xbkH=.  
public void sort(int[] data); )ycI.[C  
} -H| 9 82=  
0b&# w  
public static void swap(int[] data, int i, int j) { 'u,|*o  
int temp = data; Mw[3711v  
data = data[j]; bWPsfUn#  
data[j] = temp; z 4u&#.bU  
} )>a~%~:  
} RQ+,7Ir  
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