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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。 V)N9V|O'  
插入排序: aeH 9:GQ6  
?1OS%RBF  
package org.rut.util.algorithm.support; l Fzb$k}_{  
Q^fli"_ :  
import org.rut.util.algorithm.SortUtil; o5Pq>Y2T  
/** uo 7AU3\  
* @author treeroot HpNf f0c  
* @since 2006-2-2 T!v%NZj3  
* @version 1.0 \P{VJ^) 0  
*/ 1C.<@IZ  
public class InsertSort implements SortUtil.Sort{ m{R`1cN=Hg  
g ~10K^  
/* (non-Javadoc) p_P'2mf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m:p1O3[R  
*/ _h@e.BtDs  
public void sort(int[] data) { p@r~L(>+3  
int temp; 8@b@y|#]X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (q:L_zFj>"  
} ajkRL|^  
} <k<  
} v C><N  
lv$tp,+  
} G+\2Aj  
:j?Lil%R  
冒泡排序: HlI*an  
c1MALgK~}\  
package org.rut.util.algorithm.support; RE *UIh*O  
9O@ eJ$  
import org.rut.util.algorithm.SortUtil; O]^E%;(]}i  
(hd2&mSy  
/** 9.1%T06$  
* @author treeroot fS!%qr  
* @since 2006-2-2 #\t?`\L3  
* @version 1.0 %G\rL.H|  
*/ zbi[r  
public class BubbleSort implements SortUtil.Sort{ Du[$6  
j>?c]h{-  
/* (non-Javadoc) .D)'ZY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X<Vko^vlj  
*/ Qy@chN{eP  
public void sort(int[] data) { ]_F%{8|  
int temp; wCn W]<+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~p8-#A)X,)  
if(data[j] SortUtil.swap(data,j,j-1); L6 hTz'  
} _E&*JX  
} a7OD%yQ  
} 3}LTEsdM  
} DFR.F:O%  
a{Tv#P*!  
} 1_GUi  
MlS<txFPS  
选择排序: (y#8z6\dx  
uF@Q8 7G  
package org.rut.util.algorithm.support; 8~rD#8`6j  
I.q nA  
import org.rut.util.algorithm.SortUtil; A9$q;8= <  
qBKIl= ne  
/** ETjlq]@j  
* @author treeroot vxZz9+UbF  
* @since 2006-2-2 2hmV 1gj  
* @version 1.0 "{L%5:H@  
*/ AP/5, M<  
public class SelectionSort implements SortUtil.Sort { yy/wSk  
&m+s5  
/* s?E7tmaM  
* (non-Javadoc) V><5N;w  
* &W`yHQ"JY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e[w)U{|40  
*/ "E 8-76n  
public void sort(int[] data) { DghX(rs_  
int temp; rDUNA@r  
for (int i = 0; i < data.length; i++) { e~nmIy  
int lowIndex = i; >8>`-  
for (int j = data.length - 1; j > i; j--) { +a"A svw2  
if (data[j] < data[lowIndex]) { EiIbp4*e  
lowIndex = j; Xm\tyLY  
} 7(Y!w8q&^  
} {gK i15t  
SortUtil.swap(data,i,lowIndex); J/R=O>  
} C x$|7J=O  
} nmS3  
h"]v+u`!SM  
} 3D;\V&([  
~A [ Ju%R  
Shell排序: }UQBaqDH  
[S-NGip  
package org.rut.util.algorithm.support; rv:,Os_  
c?>Q!sC  
import org.rut.util.algorithm.SortUtil; d8dREhK&  
XSn^$$S  
/** GfL}f9  
* @author treeroot r$R(4q:  
* @since 2006-2-2 (Dq3e9fX  
* @version 1.0 j4+hWalm  
*/ m cp}F|ws  
public class ShellSort implements SortUtil.Sort{ aq,&W q@  
<iJ->$  
/* (non-Javadoc) )#IiHBF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xREqcH,vU  
*/ @6}c\z@AxM  
public void sort(int[] data) { 0@^YxU[YN  
for(int i=data.length/2;i>2;i/=2){ kM]?  
for(int j=0;j insertSort(data,j,i); !-LPFy>  
} ]%ikr&78u  
} 4+'yJ9~,B  
insertSort(data,0,1); {u3^#kF  
} :}e*3={4  
T~=NY,n  
/** u{tjB/K&  
* @param data ) dwPD  
* @param j :=UeYm @  
* @param i Lt|k}p@]  
*/ K, ?M5n '  
private void insertSort(int[] data, int start, int inc) { I_'vVbK+>  
int temp; %L<VnY#%u  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Wi hQj  
} qRTxg%  
} )MmMs"Um  
} ^xu`NE8;  
W&TPrB  
} rsOon2|  
i2)rDek3]T  
快速排序: c*HS#C7'2  
s)]i0+!  
package org.rut.util.algorithm.support; Y-gjX$qGo  
E;| q  
import org.rut.util.algorithm.SortUtil; kO~xE-(=  
n M,m#"AI  
/** W446;)?5  
* @author treeroot @,pO%,E6  
* @since 2006-2-2 l4|bpR Cp  
* @version 1.0 b ]1SuL  
*/ _I3j 7f,V  
public class QuickSort implements SortUtil.Sort{ 9\R:J"X  
2AzF@Pi^z  
/* (non-Javadoc) .LN&EfMenF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +, p  
*/ L8T T54fM  
public void sort(int[] data) { u}qfwVX Z  
quickSort(data,0,data.length-1); DIkD6n?V  
} :sk7`7v  
private void quickSort(int[] data,int i,int j){ P/,7CfyPd  
int pivotIndex=(i+j)/2; ;BejFcb  
file://swap VKS:d!}3E  
SortUtil.swap(data,pivotIndex,j); DU({Ncge  
?R;5ErZ  
int k=partition(data,i-1,j,data[j]); #Z98D9Pv`o  
SortUtil.swap(data,k,j); DUM,dFIlvF  
if((k-i)>1) quickSort(data,i,k-1); >.\G/'\?  
if((j-k)>1) quickSort(data,k+1,j); >p}d:t/  
o8H<{D13  
} O]4!U#A  
/** 9IN =m 5  
* @param data  ^qy$M>  
* @param i M!;H3*  
* @param j 2RT9Q!BX{  
* @return  Pb+oV  
*/ "7l p|0I  
private int partition(int[] data, int l, int r,int pivot) { q'hMf?_  
do{ * 8kg6v%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *{)[:;  
SortUtil.swap(data,l,r); #W~5M ?+  
} /n/U)!tp  
while(l SortUtil.swap(data,l,r); W6E9  
return l; f/eT4y  
} Gx y>aS3  
t \Fc <  
} )wCA8  
4 (bV#   
改进后的快速排序: @HMt}zD  
zTAt% w5  
package org.rut.util.algorithm.support; Haaungb"  
<@A/`3_O)  
import org.rut.util.algorithm.SortUtil; L!3{ASIN0  
Y^2`)':  
/** J=Ak+  J  
* @author treeroot B.'@~$  
* @since 2006-2-2 43A6B  
* @version 1.0 .hSacd  
*/ z%`Tf&UL  
public class ImprovedQuickSort implements SortUtil.Sort { 1LJ ?Ka[_*  
V4l`Alr\L  
private static int MAX_STACK_SIZE=4096; G>YJ3p7  
private static int THRESHOLD=10; DSizr4R  
/* (non-Javadoc) V%<<Udu<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fP&F$"o8  
*/ d[kb]lC  
public void sort(int[] data) { *P61q\2Z  
int[] stack=new int[MAX_STACK_SIZE]; i"F'n0*L  
+r2E5s   
int top=-1; f8lBxK  
int pivot; HP3~.1Sp  
int pivotIndex,l,r; 8rGW G  
^h1VCyoR*  
stack[++top]=0; N#bWMZ"  
stack[++top]=data.length-1; (=QaAn,,R  
7 I&7YhFI  
while(top>0){ 5w@  ;B  
int j=stack[top--]; DcQ^V4_  
int i=stack[top--]; gK-:t  
/21d%T:}  
pivotIndex=(i+j)/2; ]i8K )/  
pivot=data[pivotIndex]; pyT+ba#  
Z, lUO.  
SortUtil.swap(data,pivotIndex,j); c1jHg2xim  
{,]BqFXv  
file://partition )gmDxD ^C  
l=i-1; fB3O zff  
r=j; X']>b   
do{ _-o*3gmbQ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  +h9U V  
SortUtil.swap(data,l,r); ^R,5T}J.  
} l0U6eOx  
while(l SortUtil.swap(data,l,r); h:z;b;  
SortUtil.swap(data,l,j); -E2[PW4$  
J.$<Lnt>u  
if((l-i)>THRESHOLD){ vk5pnCM^3  
stack[++top]=i; Ua5m2&U1  
stack[++top]=l-1; T!"<Kv]J  
} 95T%n{rz  
if((j-l)>THRESHOLD){ pnxjuDN7}x  
stack[++top]=l+1; U`W^w%  
stack[++top]=j; >-s}1*^=oD  
} dsR{ P,!  
"<v_fF<Y  
} Dr6Br<yi  
file://new InsertSort().sort(data); c~5#)AXMT  
insertSort(data); N5}vy$t_P  
} 1.p?P] .  
/** ~9kvC&/{[  
* @param data SjtGU47$!  
*/ Rb#Z'1D'G  
private void insertSort(int[] data) { {;n?c$r  
int temp; }E*d)n|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wju~5  
} r?{Vqephz  
} Gxi;h=J2)>  
} JEdtj1v{O  
(PsA[>F  
} #7lkj:j4  
3a!/EP  
归并排序: rHT8a^MO  
M0=ZAsN  
package org.rut.util.algorithm.support; &I'~:nWpt  
~<v{CBq[  
import org.rut.util.algorithm.SortUtil; @T;O^rE~N  
6|T{BOW!d  
/** [cXu<vjFM  
* @author treeroot g_0"T}09(  
* @since 2006-2-2 l>~:lBO  
* @version 1.0 X2 M<DeF:  
*/ puZ<cV e/  
public class MergeSort implements SortUtil.Sort{ iL|*g3`-f  
l2VO=RDiW  
/* (non-Javadoc) ;cp-jY_U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _q6+]  
*/ ua|qL!L+  
public void sort(int[] data) { oxO}m7 ULH  
int[] temp=new int[data.length]; oq8~PTw  
mergeSort(data,temp,0,data.length-1); 6Wc eDY  
} j"94hWb  
4fzq C)  
private void mergeSort(int[] data,int[] temp,int l,int r){ xBgf)'W_Z  
int mid=(l+r)/2; 2-j|q6m5  
if(l==r) return ; Qi=rhN`  
mergeSort(data,temp,l,mid); M?[lpH3  
mergeSort(data,temp,mid+1,r); JO :m: M  
for(int i=l;i<=r;i++){ ;2L=WR%  
temp=data; k\ I$ve"*  
} hXz"}X n  
int i1=l; )z/j5tnvm  
int i2=mid+1; wf|CE410  
for(int cur=l;cur<=r;cur++){ 2i,Jnv=sR  
if(i1==mid+1) }Q\yem  
data[cur]=temp[i2++]; {dMa&r|lp  
else if(i2>r) f\r$T Nd6  
data[cur]=temp[i1++]; HoRLy*nU  
else if(temp[i1] data[cur]=temp[i1++]; 2mU}"gf[  
else _x UhDu%  
data[cur]=temp[i2++]; ]"/ *7NM  
} ,l0s(Cg  
} GExG1n-  
Z#V[N9L  
} `&pb`P<`  
3g-}k  
改进后的归并排序: tCc}}2bC&  
h$ZF[Xbfe  
package org.rut.util.algorithm.support; 1"v;w!uh  
*,'"\n  
import org.rut.util.algorithm.SortUtil; t8?+yG;  
[]dRDe;#  
/** cst=ms  
* @author treeroot "K\Rq+si  
* @since 2006-2-2 f^$\+H"W  
* @version 1.0 TS UN(_XGW  
*/ !kV?h5@Bo  
public class ImprovedMergeSort implements SortUtil.Sort { l" sR\`~  
PY>j?otD  
private static final int THRESHOLD = 10; E+~~d6nB  
X,y$!2QI  
/* u{H_q&1  
* (non-Javadoc) Pyyx/u+?@  
* brTB /(E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )9<)mV*EB(  
*/ "UA W  
public void sort(int[] data) { %H}+'.8  
int[] temp=new int[data.length]; YO,GZD`-o  
mergeSort(data,temp,0,data.length-1); Pv0+`>):  
} M2oKLRt)L  
jXW71$B  
private void mergeSort(int[] data, int[] temp, int l, int r) { w^ DAu1  
int i, j, k; w6wXe_N+M  
int mid = (l + r) / 2; i, )kI  
if (l == r) [n:R]|^a  
return; Q7Dkh KT  
if ((mid - l) >= THRESHOLD) Xt7uCs  
mergeSort(data, temp, l, mid); |faXl3|  
else .d8~]@U!<  
insertSort(data, l, mid - l + 1); Y.}n,y|J}  
if ((r - mid) > THRESHOLD) 5TnECk  
mergeSort(data, temp, mid + 1, r); I`y}Ky<q  
else *sw$OnVb  
insertSort(data, mid + 1, r - mid); 3gGF?0o  
JgxOxZS`@  
for (i = l; i <= mid; i++) { ]0O pd9  
temp = data; ml3]CcKn  
}  UnO -?  
for (j = 1; j <= r - mid; j++) { )?_c7 R  
temp[r - j + 1] = data[j + mid]; @0)bY*njj  
} -bs~{  
int a = temp[l]; BGA.8qWR4  
int b = temp[r]; >yL8C: J9  
for (i = l, j = r, k = l; k <= r; k++) { i4uUvZ f  
if (a < b) { QzV:^!0J  
data[k] = temp[i++]; A46y?"]/30  
a = temp; :ox+WY  
} else { H>W A?4  
data[k] = temp[j--]; 4K4?Q+?  
b = temp[j]; 1YS{; y[o  
} bx5X8D  
} ,I)/ V>u  
} 0mCrA|A.  
#^eviF8  
/** Z$+0gm\Cnw  
* @param data fc&4e:Ve  
* @param l XRaq\a`=:  
* @param i #5'9T:8  
*/ { \Q'eL8  
private void insertSort(int[] data, int start, int len) { q,+d\-+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :PjHsNp;^  
} s K s D  
} 6{1c S  
} :;]6\/ky  
} ~KCOCtiD  
b^FB[tZ\x  
堆排序: NPKRX Li%  
$0{c =r9  
package org.rut.util.algorithm.support; +]Ydf^rF  
:uqsRFo&4  
import org.rut.util.algorithm.SortUtil; h*&-[nSo  
Joe k4t&0<  
/** q(_pk&/  
* @author treeroot +MXI;k_  
* @since 2006-2-2 Xgc@cwd  
* @version 1.0 llI`"a  
*/ `&j5/[>v  
public class HeapSort implements SortUtil.Sort{ a B%DIH,  
HPm12&8,  
/* (non-Javadoc) |WlWZ8]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qnph?t>  
*/ Svy bP&i|  
public void sort(int[] data) { MyAi)Mz~o  
MaxHeap h=new MaxHeap(); LbvnV~S  
h.init(data); (|"K sGl  
for(int i=0;i h.remove(); (B]rINY|  
System.arraycopy(h.queue,1,data,0,data.length); IIs'm!"Y>  
} ~[isR|>  
TDk'  
private static class MaxHeap{ )<t5' +d%  
i\2~yXw\  
void init(int[] data){ .[ NB"\<q  
this.queue=new int[data.length+1]; G2zfdgW${/  
for(int i=0;i queue[++size]=data; U"af3c^2  
fixUp(size); 5fA<I _ D  
} x{j|Tf3,G  
} hK&jo(V  
,QdUfM  
private int size=0; -y)ij``VY  
c54oQ1Q&"  
private int[] queue; nYLq%7}k  
8dNwi&4  
public int get() { 6 `+dP"@  
return queue[1]; I|@%|sTW  
} (Xi?Y/  
:na9PW`TC  
public void remove() { -uHD| }  
SortUtil.swap(queue,1,size--); [?Wt ZM^q  
fixDown(1); # 4L[8(+V  
} d @<(Z7|  
file://fixdown J 6D?$  
private void fixDown(int k) { ?YOH9%_cs  
int j; ?4P*,c  
while ((j = k << 1) <= size) { {m.l{<H  
if (j < size %26amp;%26amp; queue[j] j++; z:{'IY  
if (queue[k]>queue[j]) file://不用交换 LJt#c+]Li  
break; w$MFCJ:p&  
SortUtil.swap(queue,j,k); 0,1:l3iu1M  
k = j; *Fi`o_d9[`  
} dgh )Rfp3  
} 7Ps I'1v  
private void fixUp(int k) { BqC!78Y/e  
while (k > 1) { <C`qJP-  
int j = k >> 1; i<@6f'Kir  
if (queue[j]>queue[k]) }(4U7Ac  
break; p%pM3<p  
SortUtil.swap(queue,j,k); x DD3Y{ K  
k = j; Soy!)c]  
} ;}"_hLX  
} (A|Gb2X  
>RZ]t[)y  
} GVP"~I~/:  
z-$bce9*  
} +P:xB0Tm D  
jT}3Zn  
SortUtil: :8\!;!  
>qk[/\^O  
package org.rut.util.algorithm; uu@Y]0-  
C8 9c2  
import org.rut.util.algorithm.support.BubbleSort; 1BO$xq  
import org.rut.util.algorithm.support.HeapSort; ?^t"tY  
import org.rut.util.algorithm.support.ImprovedMergeSort; ofH=h  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^m8T$^z>  
import org.rut.util.algorithm.support.InsertSort; Dvbrpn!sk  
import org.rut.util.algorithm.support.MergeSort; q1}HsTnBH  
import org.rut.util.algorithm.support.QuickSort; g`I`q3EF)  
import org.rut.util.algorithm.support.SelectionSort; q<Gn@xc'  
import org.rut.util.algorithm.support.ShellSort; e=ZwhRP  
J6J[\  
/** Ysbd4 rN  
* @author treeroot $fES06%  
* @since 2006-2-2 F9@,T8I  
* @version 1.0 &.J8O+  
*/ INtt0Cm9"  
public class SortUtil { cVya~ *  
public final static int INSERT = 1; *y<Ru:D  
public final static int BUBBLE = 2; __o`+^FS  
public final static int SELECTION = 3; ]wFKXZeK  
public final static int SHELL = 4; ?@8[1$1a  
public final static int QUICK = 5; WJ":BK{NM  
public final static int IMPROVED_QUICK = 6; U+:oy:mz  
public final static int MERGE = 7; QFt7L  
public final static int IMPROVED_MERGE = 8; 4gbi?UAmX  
public final static int HEAP = 9; z(V?pHv+  
D#Fe\8!l  
public static void sort(int[] data) { V; 0{o  
sort(data, IMPROVED_QUICK); e&%m[:W:<  
} |TM&:4D]^  
private static String[] name={ |<tZ|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" XN65bq  
}; x dDR/KS  
>fHg1d2-  
private static Sort[] impl=new Sort[]{ &U q++f6  
new InsertSort(), o_; pEe  
new BubbleSort(), pn3f{fQ  
new SelectionSort(), Hbwjs?Vq?]  
new ShellSort(), 9QE|p  
new QuickSort(), #vh1QV!Ho  
new ImprovedQuickSort(), #!V [(/  
new MergeSort(), =5=D)x~  
new ImprovedMergeSort(), .I\)1kjX  
new HeapSort() hDa I@_86  
}; DE"KbA0}  
94C)63V  
public static String toString(int algorithm){ bL*;6TzRK  
return name[algorithm-1]; SxV(.i'  
} HgL*/d  
$T7hY$2Q l  
public static void sort(int[] data, int algorithm) { bU'{U0lM  
impl[algorithm-1].sort(data); {.F``2  
} D~_|`D5WK  
`s74g0h  
public static interface Sort { kB_uU !G  
public void sort(int[] data); ] =ar&1}J  
} jCdKau&9  
HRS|VC$tz  
public static void swap(int[] data, int i, int j) { SjgF&LD  
int temp = data; *4}l V8  
data = data[j]; S~^0 _?  
data[j] = temp; qZRx,^gd  
} 04-phEA2Q  
} Cr0 \7  
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