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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。 [Kc?<3W  
插入排序: nUj`#%  
B%\&Q @X  
package org.rut.util.algorithm.support; _\\Al v.  
;iiCay37F  
import org.rut.util.algorithm.SortUtil; h_4*?w  
/** p48enH8CO  
* @author treeroot q3#[6!  
* @since 2006-2-2 nvndgeSy  
* @version 1.0 %mmV#vwp  
*/ .hx(9  
public class InsertSort implements SortUtil.Sort{ E \/[hT  
#[jS&rr(  
/* (non-Javadoc) 4x)vy -y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PI*@.kqR-  
*/ MuD ? KK  
public void sort(int[] data) { phH@{mI  
int temp; sA?8i:]O:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iKo2bC:.&  
} iz-z?)%  
} q~9-A+n  
} kV1L.Xg  
5vLXMdN  
} ;'{7wr|9  
Zm0VaOT$I  
冒泡排序: 23r(4  
Y!xPmL^]?  
package org.rut.util.algorithm.support; ~b]enG5xS4  
>gp53\  
import org.rut.util.algorithm.SortUtil; v)O0i2  
3/]1m9x  
/** E$ \l57  
* @author treeroot [E p'm  
* @since 2006-2-2 rEWJ3*Hb  
* @version 1.0 =i  vlS  
*/ B<EqzP*#  
public class BubbleSort implements SortUtil.Sort{  ]+Whv%M  
~!Sd|e:4  
/* (non-Javadoc) 2*75*EQCH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *>W<n1r@]  
*/ .;7V]B1o  
public void sort(int[] data) { fd *XK/h  
int temp; yP3I^>AZ3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ua \f]y  
if(data[j] SortUtil.swap(data,j,j-1); $CMye; yL  
} #3*cA!V.<  
} } +Sp7F1q  
} Zy7kPL;b  
} "T=j\/Q  
FUL3@Gb$UV  
} $[A^8 [//  
+&7V@  
选择排序: .9x* YS  
lU!_V%n  
package org.rut.util.algorithm.support; `_cv& "K9f  
^|Z'}p|&  
import org.rut.util.algorithm.SortUtil; a&JY x  
dUa>XkPa\2  
/** /g>-s&w  
* @author treeroot y%vAEQ2j=  
* @since 2006-2-2 q`p0ul,n  
* @version 1.0 )] q Qgc&  
*/ @@*x/"GJG  
public class SelectionSort implements SortUtil.Sort { `WH$rx!  
n`Z}tQ%)o  
/* i ed 1+H  
* (non-Javadoc) >g !Z|ju  
* H_f8/H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?S& yF  
*/ z&H.fsL  
public void sort(int[] data) { % WDTnEm  
int temp; .iR<5.  
for (int i = 0; i < data.length; i++) { Nsh/  
int lowIndex = i; *e [*  
for (int j = data.length - 1; j > i; j--) { (km $qX  
if (data[j] < data[lowIndex]) { XdA]);,  
lowIndex = j; I<RARB-j  
} ]CNPy$>*  
} ?<4pYEP  
SortUtil.swap(data,i,lowIndex); b * \ oQ  
} Ry}4MEq]  
} 2fky z  
&*/= `=:C8  
} uT=r*p(v  
h'S0XU ;  
Shell排序: T P#Ncqh  
< xeB9  
package org.rut.util.algorithm.support; "Q+wO+}6  
=KQIrS:  
import org.rut.util.algorithm.SortUtil; NpGi3>5  
8B-PsS|'  
/** Vfzy BjQ  
* @author treeroot ?<.a>"!  
* @since 2006-2-2 KJJ:fG8'  
* @version 1.0 {wM<i  
*/ E8av/O VUd  
public class ShellSort implements SortUtil.Sort{ lfb+)s  
!EKt$8W  
/* (non-Javadoc) B~}BDnu6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l4T[x|')M  
*/ `#iL'ND[  
public void sort(int[] data) { 4I&(>9 @z<  
for(int i=data.length/2;i>2;i/=2){ YSxr(\~j   
for(int j=0;j insertSort(data,j,i); 8 !:2:  
} c[2ikI,n[  
} G HQ~{  
insertSort(data,0,1); %?n=I n(F  
} %|+aI?  
_YlyS )#@  
/** K?,? .!ev  
* @param data EG^ rh;  
* @param j '2Zs15)V  
* @param i nW]CA~  
*/ y(<{e~  
private void insertSort(int[] data, int start, int inc) { AVLY|79#  
int temp; >|RoLV  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); MzB.Vvsy%9  
} <LH6my  
} \YJQN3^46>  
} &;?+ ^L>  
tH; 6 Mp;f  
} 8aHE=x/TL  
[L-wAk:Fb  
快速排序: qPz_PRje  
qGN> a[D  
package org.rut.util.algorithm.support; {Pe&J2 +  
7_3 PM 3C  
import org.rut.util.algorithm.SortUtil; M^\`~{*T  
1E!.E=Y ?M  
/** ylos6]zS8  
* @author treeroot -}4CY\d6'  
* @since 2006-2-2 }U=}5`_]D  
* @version 1.0 `0%;Gz%}  
*/ :I"2 2EH  
public class QuickSort implements SortUtil.Sort{ TT9 \m=7  
k;<@ 2C  
/* (non-Javadoc) ,V j&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :55a9d1bL  
*/ S=S/]]e  
public void sort(int[] data) { !W,LG$=/  
quickSort(data,0,data.length-1); -wH0g^Ed  
} R#Yj%$E1  
private void quickSort(int[] data,int i,int j){ 61QA<Wb  
int pivotIndex=(i+j)/2; A#']e8  
file://swap ,)U%6=o#}  
SortUtil.swap(data,pivotIndex,j); eQyc<  
SN")u  
int k=partition(data,i-1,j,data[j]); ^& *;]S`  
SortUtil.swap(data,k,j); *GYLj[  
if((k-i)>1) quickSort(data,i,k-1); "D>/#cY1/  
if((j-k)>1) quickSort(data,k+1,j); S=kO9"RB]  
WF~x`w&\  
} 5{ +>3J  
/**  l #]#_  
* @param data xc-[gt6  
* @param i Qt\:A!'jw  
* @param j 9a@S^B>  
* @return P//nYPyzg  
*/ \2~\c#-k  
private int partition(int[] data, int l, int r,int pivot) { (bsywM  
do{ yz,_\{}  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); '`gnJX JO  
SortUtil.swap(data,l,r); S['%>  
} ]qZj@0#7n  
while(l SortUtil.swap(data,l,r); V/DMkO#a  
return l; };}N1[D   
} R-W.$-rF  
qp*~  |  
} ,hJx3g5#n  
WoN JF6=?  
改进后的快速排序: JXww_e[  
HD{u#~8{  
package org.rut.util.algorithm.support; 3&E@#I^] ,  
IDF0nx]  
import org.rut.util.algorithm.SortUtil; E0HE@pqr  
LZG(T$dI  
/** +B8oW3v# )  
* @author treeroot bUy!hS;s  
* @since 2006-2-2 dtV*CX.D.7  
* @version 1.0 f6SXXkO+  
*/ zV15d91GX  
public class ImprovedQuickSort implements SortUtil.Sort { -;6uN\gq  
r$M<vo6C  
private static int MAX_STACK_SIZE=4096; !]7b31$M_  
private static int THRESHOLD=10; je#LD  
/* (non-Javadoc) z*b|N45O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wZCboQ,  
*/ Fsq)co  
public void sort(int[] data) { Jb9 @U /<\  
int[] stack=new int[MAX_STACK_SIZE]; ~ [/jk !G  
h7.jWJTo  
int top=-1; u f<%!=e  
int pivot; W:j9KhvT  
int pivotIndex,l,r; F#Pn]  
">8oF.A^  
stack[++top]=0; Z/GSR$@lI  
stack[++top]=data.length-1; :qR8 e J  
dR>$vbjh1Z  
while(top>0){ gyy}-^`F  
int j=stack[top--]; 9' H\-  
int i=stack[top--]; W:WRG8(F  
3 %r*~#nz  
pivotIndex=(i+j)/2; A? jaS9 &)  
pivot=data[pivotIndex]; :.BjJ2[S  
; %AgKgV  
SortUtil.swap(data,pivotIndex,j); Rq",;,0ZJ  
MVQ6I/EA4  
file://partition =D?HL?  
l=i-1; zmuR n4Nv  
r=j; MYxuQ|w  
do{ DuAix)#FN9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); pnuwj U-  
SortUtil.swap(data,l,r); d'Dd66  
} f2KH&j>~r  
while(l SortUtil.swap(data,l,r); l.;^w  
SortUtil.swap(data,l,j); Q>\DM'{:4  
OFcP4hDi  
if((l-i)>THRESHOLD){ =SW<Vhtb  
stack[++top]=i; %@aC5^Ovy+  
stack[++top]=l-1; Wy1.nn[  
} x}` )'a[  
if((j-l)>THRESHOLD){ m,6u+Z ,  
stack[++top]=l+1; y fuH  
stack[++top]=j; }a UQ#x  
} y'oH>l+n  
\ ux {J  
} |Q%nnN  
file://new InsertSort().sort(data); [z_z tK1  
insertSort(data); xu]Kt+QnSk  
} \Q|,0`  
/**  9,tk  
* @param data cuf]-C1_  
*/ 5[*8C Y  
private void insertSort(int[] data) { "~Kph0-  
int temp; 6"[,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V=>]&95-f  
} tk 5 p@l  
} cV`NQt<W  
} Lcy6G%A  
7''iT{-[p  
} ?< Ma4yl</  
D^t: R?+  
归并排序: LZ(K{+U/  
'c/8|9jX  
package org.rut.util.algorithm.support; Kj?hcG l[  
[oXr6M:  
import org.rut.util.algorithm.SortUtil; dgByl-8Q  
8{&.[S C7  
/** r M}o)  
* @author treeroot |w>b0aY  
* @since 2006-2-2 ]}&HvrOld  
* @version 1.0 LH@Kn?R6  
*/ 2>CR]  
public class MergeSort implements SortUtil.Sort{ HB<>x  
+n &8" )  
/* (non-Javadoc) F,mStw:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k0b6X5  
*/ /;y`6WG%2  
public void sort(int[] data) { NOAz"m+o  
int[] temp=new int[data.length]; 04Uyr;y  
mergeSort(data,temp,0,data.length-1); N /;Vg ^Wx  
} ~xJr|_,gp  
c|iTRco  
private void mergeSort(int[] data,int[] temp,int l,int r){ 11A$#\,  
int mid=(l+r)/2; Z% `$id  
if(l==r) return ; k cNPdc  
mergeSort(data,temp,l,mid); 79jnYjk  
mergeSort(data,temp,mid+1,r); ^`$-c9M?'  
for(int i=l;i<=r;i++){ C(xsMO'k,,  
temp=data; #>z!ns  
} Xoq -  
int i1=l; ;<F^&/a|yQ  
int i2=mid+1; uaLjHR0  
for(int cur=l;cur<=r;cur++){ 8|!"CQJ|H  
if(i1==mid+1) (Dba!zSs  
data[cur]=temp[i2++]; *u[@C  
else if(i2>r) /Ea&Zm  
data[cur]=temp[i1++]; (2RuQgO  
else if(temp[i1] data[cur]=temp[i1++]; B\ZCJaMb  
else ^%U`|GBZp  
data[cur]=temp[i2++]; +t]Ge >S  
} P+e{,~o  
} p7.~k1h  
pQ ul0]  
} zf\$T,t)  
k$Ug;`v#  
改进后的归并排序: Io /;+R .  
q03nu3uDI  
package org.rut.util.algorithm.support; @c>MROlrlF  
.\ vrBf  
import org.rut.util.algorithm.SortUtil; K'K/}q<  
LF:~& m  
/** XHJ/211  
* @author treeroot 6jov8GIAt  
* @since 2006-2-2 J0t_wM Ja  
* @version 1.0 M@pF[J/  
*/ 4jVd  
public class ImprovedMergeSort implements SortUtil.Sort { 3]&le[.  
`0 W+(9}  
private static final int THRESHOLD = 10; $9 G".T  
d]?fL&jr  
/* W yP]]I.  
* (non-Javadoc) zTn.#-7y  
* --vJR/-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +5:9?&lH  
*/ wjKc!iB  
public void sort(int[] data) { ')WS :\J  
int[] temp=new int[data.length]; n (Um/  
mergeSort(data,temp,0,data.length-1); sr<\fW  
} ZV-Yq !|t  
$?OQtz@  
private void mergeSort(int[] data, int[] temp, int l, int r) { h6 :|RGF  
int i, j, k; BGstf4v>A<  
int mid = (l + r) / 2; P;IM -]  
if (l == r) l5enlYH  
return; k/Q8:qA  
if ((mid - l) >= THRESHOLD) sv!6z Js  
mergeSort(data, temp, l, mid); lvR>%I0`*  
else z gxMDLH  
insertSort(data, l, mid - l + 1); MiMDEe%f%  
if ((r - mid) > THRESHOLD) Ud#xgs'  
mergeSort(data, temp, mid + 1, r); 1b2xWzpG  
else Xw162/:h  
insertSort(data, mid + 1, r - mid); T9>,Mx%D[  
4Ub7T=LG  
for (i = l; i <= mid; i++) { raR=k!3i  
temp = data; 7?uIl9Vk>(  
} w:~vfdJ  
for (j = 1; j <= r - mid; j++) { :?)q"hE  
temp[r - j + 1] = data[j + mid]; H[?l)nZ}  
} anH]]  
int a = temp[l]; Zo Ra^o  
int b = temp[r]; hXc:y0 0  
for (i = l, j = r, k = l; k <= r; k++) { Bv 7os3xb  
if (a < b) { fz+dOIU3\L  
data[k] = temp[i++]; )qDV3   
a = temp; 6ziBGU#.-  
} else { [E qZj/  
data[k] = temp[j--]; H00iy$R  
b = temp[j]; - G=doP0  
} 7Ewq'Vu`y  
} 7aHP;X~0  
} )s ?Hkn  
|tFg9RT  
/** ~#=70  
* @param data Ece=loV*l  
* @param l hz-^9U  
* @param i U@LIw6B!KL  
*/ 0.^67'  
private void insertSort(int[] data, int start, int len) { J2!)%mF$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); c <X( S  
} [3v&j_  
} OXV9D:bIa  
} G~f|Sx  
} 22EI`}"J  
b C"rQJg  
堆排序: k !g%vx  
ca'c5*Fs  
package org.rut.util.algorithm.support; 6'.CW4L  
e8)8QmB{o  
import org.rut.util.algorithm.SortUtil; W: 3fLXk+  
 &/)To  
/** o4YF,c+>q  
* @author treeroot ]QF*\2b-I2  
* @since 2006-2-2 V B=jK Mi  
* @version 1.0 8y]{I^z}  
*/ Lv-M.  
public class HeapSort implements SortUtil.Sort{ ~W_ T3@  
Tqx  
/* (non-Javadoc) <,&t}7M/:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2bOFH6g  
*/ J>+~//C  
public void sort(int[] data) { zHXb[$ Q  
MaxHeap h=new MaxHeap(); v;Rm42k  
h.init(data); A/~^4DR  
for(int i=0;i h.remove(); oK2jPP  
System.arraycopy(h.queue,1,data,0,data.length); 7fW$jiw  
} 9lqD~H.  
Y>CZ  
private static class MaxHeap{ /)V8X#,  
w(q\75  
void init(int[] data){ 1HeE$  
this.queue=new int[data.length+1]; JiX-t\V~  
for(int i=0;i queue[++size]=data; q=26($  
fixUp(size); U)_x(B3d/  
} 3Zm;:v4y  
} 88zK)k{  
E>YE3-]  
private int size=0; Nkk+*(Z  
%p^`,b}  
private int[] queue; .:Zb~  
(l)r.Vj  
public int get() { Jwbb>mB!  
return queue[1]; *,Sa*-7(  
} GO6uQ};  
LC0g"{M  
public void remove() { ]KQBek#DD  
SortUtil.swap(queue,1,size--); ]fU0;jzX  
fixDown(1); vk3C&!M<a  
} Bv^5L>JZ/  
file://fixdown .Q DeS|l  
private void fixDown(int k) { P5Pb2|\*  
int j; R7Z!  
while ((j = k << 1) <= size) { piAFxS<6  
if (j < size %26amp;%26amp; queue[j] j++; v.>95|8  
if (queue[k]>queue[j]) file://不用交换 [9~6, ;6  
break; nOU.=N v`  
SortUtil.swap(queue,j,k); WCg&*  
k = j; Q&&oP:4~X*  
} {BD G;e  
} x,QXOh\a  
private void fixUp(int k) { Jy-V\.N>s  
while (k > 1) { 8LGNV&Edg  
int j = k >> 1; OJ<V<=MYZ  
if (queue[j]>queue[k]) l'Uj"9r,  
break; {\n?IGP?wd  
SortUtil.swap(queue,j,k); (CY#B%*  
k = j; g 4lk  
} p9~$}!ua  
} dU|&- .rG  
#9q ]jjH E  
} < !PbD  
p^ )iC&*0  
} DP!~WkU~  
2h`Tn{&1/  
SortUtil: 'A'[N :i  
ZP"Xn/L  
package org.rut.util.algorithm; qyR}|<F8*  
J|DY /v  
import org.rut.util.algorithm.support.BubbleSort; _kUtj(re  
import org.rut.util.algorithm.support.HeapSort; nRheByYm  
import org.rut.util.algorithm.support.ImprovedMergeSort; vFi+ExBU  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7K /quJ  
import org.rut.util.algorithm.support.InsertSort; c{})Z=  
import org.rut.util.algorithm.support.MergeSort; hfRxZ>O2  
import org.rut.util.algorithm.support.QuickSort; 0!q@b  
import org.rut.util.algorithm.support.SelectionSort; i: VMC NH  
import org.rut.util.algorithm.support.ShellSort; e9rgJJ  
6rN.)dL.#N  
/** !5>PZ{J  
* @author treeroot %G'P!xQhy  
* @since 2006-2-2 ZO]P9b  
* @version 1.0 ;~(yv|f6  
*/ ]eo%eaA   
public class SortUtil { >4nQ&b.u  
public final static int INSERT = 1; B;J8^esypD  
public final static int BUBBLE = 2; b}Xh|0`b+  
public final static int SELECTION = 3; nc.:Wm6Mj  
public final static int SHELL = 4; Z^#u n  
public final static int QUICK = 5; T< o8lL  
public final static int IMPROVED_QUICK = 6; 75H;6(7  
public final static int MERGE = 7; I"HA( +G  
public final static int IMPROVED_MERGE = 8; `"y:/F"{  
public final static int HEAP = 9; N)  
:rEZR`  
public static void sort(int[] data) { E[c6*I  
sort(data, IMPROVED_QUICK); g\G}b  
} h<bCm`qj  
private static String[] name={ 3% O[W  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =!DpWVsQ  
}; YGOhUT |  
W@Rb"5Gy+  
private static Sort[] impl=new Sort[]{ |F&02 f!]@  
new InsertSort(), #S"s8wdD  
new BubbleSort(), /NQ PTr  
new SelectionSort(), }z-6,i)'k  
new ShellSort(), 0t6DD  
new QuickSort(), ;e6- *  
new ImprovedQuickSort(), a( SJ5t?-2  
new MergeSort(), % \Mc6  
new ImprovedMergeSort(), #hXxrN  
new HeapSort() M# cJ&+rP  
}; XCyrr 2^  
DY1"t7 9E  
public static String toString(int algorithm){ h8icF}m  
return name[algorithm-1]; =-/sB>-C  
} qI*7ToBJ  
r\FduyOXv  
public static void sort(int[] data, int algorithm) { +6:jm54  
impl[algorithm-1].sort(data); z[0tM&pv  
} x@tI  
~"r(PCa@  
public static interface Sort { SZ~lCdWad  
public void sort(int[] data); L+8O 4K{  
} +g_m|LF  
`@8O|j  
public static void swap(int[] data, int i, int j) { rTim1<IXR  
int temp = data; 2IXtIE  
data = data[j]; n _kE  
data[j] = temp; ' 1X^@]+6  
} 6xx(o  
} Wu'9ouw!  
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