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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。 o"K{^ L~u  
插入排序: v||8Q\d  
(eG#JVsm9  
package org.rut.util.algorithm.support; [K%J t  
[JsQ/|=z  
import org.rut.util.algorithm.SortUtil; lLo FM  
/** uflp4_D   
* @author treeroot 2= u5N[*  
* @since 2006-2-2 4d[:{/+Q  
* @version 1.0 KG)Y{-Ao  
*/ *T*MLD]Q  
public class InsertSort implements SortUtil.Sort{ H|==i2V{  
UP%X`  
/* (non-Javadoc) ^P(HX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'N0d==aI  
*/ mbSJ}3c"  
public void sort(int[] data) { J1&G1\G|s=  
int temp; GiI2nHZc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |\Jpjm)?  
} 2~~Q NWN  
} F6YMcdU  
} sm/l'e  
;%hlh)k$  
} Mv JEX8M  
X2T)]`@  
冒泡排序: 99H&#!~bSS  
3>/Yku)t  
package org.rut.util.algorithm.support; 8BC}D+q  
!Vv$  
import org.rut.util.algorithm.SortUtil; zd"o #(sv  
~{oM&I|d8  
/** -0Y8/6](  
* @author treeroot {>>f5o 3  
* @since 2006-2-2 :8jHN_u  
* @version 1.0 _K8ob8)m  
*/ {}{|trr-E  
public class BubbleSort implements SortUtil.Sort{ :W8DgL>l  
B?$pIG^Mn  
/* (non-Javadoc) Y M/^-[k3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sf@g $  
*/ @y{Whun~  
public void sort(int[] data) { Z Oyq{w!2  
int temp; UvxJ _  
for(int i=0;i for(int j=data.length-1;j>i;j--){ I 4gyGg$H  
if(data[j] SortUtil.swap(data,j,j-1); YjoN: z`b  
} r68'DJ&m3  
} teQ%t~PJ-&  
} 66Huqo  
} 3Q Zw  
$yI!YX&  
} ?:~Y%4;  
Skq%S`1%Q  
选择排序: Ri"3o  
z9u"?vdA  
package org.rut.util.algorithm.support; ,=R->~ J  
% )?$82=2  
import org.rut.util.algorithm.SortUtil; mdtq-v  
j ]F  Zy  
/** r[JgCj+$&  
* @author treeroot {{SeD:hx  
* @since 2006-2-2 l%rwJLN1  
* @version 1.0 8lT.2H  
*/ b_z;^y~  
public class SelectionSort implements SortUtil.Sort { y`!3Z} 7  
jun>(7  
/* .COY%fz  
* (non-Javadoc) V2V^*9(wu@  
* XW%!#S&;X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cj31'  
*/ Y_xPr%%A  
public void sort(int[] data) { GadQ \>  
int temp; 4-lEo{IIM  
for (int i = 0; i < data.length; i++) { vn KKK.E  
int lowIndex = i; 3QL'uk  
for (int j = data.length - 1; j > i; j--) { PGOi#x  
if (data[j] < data[lowIndex]) { 1#&*xF "  
lowIndex = j; AFF7fK  
} /t01z~_  
} e{>X2UNW  
SortUtil.swap(data,i,lowIndex); Tmg~ZI:MW  
} .3t[M0sd  
} RL[?&L$7^%  
?s dVd  
} tz6d}$  
~ubGx  
Shell排序: )R<hYd  
gV9 1=Pj  
package org.rut.util.algorithm.support; C;y3?+6P$  
bN8GRK )  
import org.rut.util.algorithm.SortUtil; kViX FPW  
CZS{^6Ye  
/** )K4 |-<i  
* @author treeroot ,9`sC8w|  
* @since 2006-2-2 > 't=r  
* @version 1.0 fj[B,ua  
*/ 3BDAvdJ4.  
public class ShellSort implements SortUtil.Sort{ {r#2X1  
hp@g iu7  
/* (non-Javadoc) )ZEUD] X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tT ~}lW)Y  
*/ [kDjht|$>  
public void sort(int[] data) { wyMj^+ 2m  
for(int i=data.length/2;i>2;i/=2){ .Qn54tS0q  
for(int j=0;j insertSort(data,j,i); ,)@Q,EHN;  
} [u[F6Wst  
} hCQz D2  
insertSort(data,0,1); KLGhsx35  
} BHy#g>KUF  
6HW<E~G'6  
/** `i<;5s!rX  
* @param data j{C+`~O  
* @param j Ig-9Y;hdmn  
* @param i XI~2Vzht  
*/ Rf+ogLa=  
private void insertSort(int[] data, int start, int inc) { %`t;5kmR  
int temp; ]!E|5=q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (`>RwooE  
} " 6Hka{  
} CLg;  
} >?ZH[A  
h3$.` >l  
} 3)^-A4~E  
 {.GC7dx  
快速排序: )@DH&  
rDX_$,3L  
package org.rut.util.algorithm.support; Z$ {I 4a  
,^3eMn  
import org.rut.util.algorithm.SortUtil; {s6;6>-kPW  
9[N+x2q  
/** lX/6u E_%  
* @author treeroot dq%7A=-  
* @since 2006-2-2 ,3Y~ #{,i  
* @version 1.0 u.YPb@  
*/ 1a;Le8  
public class QuickSort implements SortUtil.Sort{ 7^4F,JuJO  
4\H:^U&  
/* (non-Javadoc) ^a4y+!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) //2G5F;  
*/ >:%i,K*AM  
public void sort(int[] data) { M;V (Tf  
quickSort(data,0,data.length-1); *A':^vgk  
} R?a)2jl  
private void quickSort(int[] data,int i,int j){ 7afD^H%  
int pivotIndex=(i+j)/2; +|Z1U$0g  
file://swap /-TJtR4>  
SortUtil.swap(data,pivotIndex,j); ,i lVt  
?dP3tLR  
int k=partition(data,i-1,j,data[j]); DBYD>UA  
SortUtil.swap(data,k,j); x_CB'Rr6  
if((k-i)>1) quickSort(data,i,k-1); (.-3q;)6  
if((j-k)>1) quickSort(data,k+1,j); % < D  
/-Y*V*E  
} W2G`K+p  
/** al$G OMi  
* @param data -h%;L5oJ2,  
* @param i *|h-iA+9  
* @param j zA=gDuy3@  
* @return a1R2ocC  
*/ AmNmhcN  
private int partition(int[] data, int l, int r,int pivot) { [8l;X:  
do{ 9!zUv:;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2siUpmX  
SortUtil.swap(data,l,r); Z;M]^?  
} /.l8Jb4  
while(l SortUtil.swap(data,l,r); O'{UAb+-  
return l; ?}\aG3_4  
} |q"WJQ  
/bv `_ >  
} -H5n>j0!{  
Wu(6FQ`H  
改进后的快速排序: #m{K  
:uy8$g*;TE  
package org.rut.util.algorithm.support; h4N!zj[  
o65:)z u  
import org.rut.util.algorithm.SortUtil; DksSD  
%B5.zs]Of  
/** )F4H'  
* @author treeroot  s.&ewf\  
* @since 2006-2-2 C8>zr6)1  
* @version 1.0 S'#KPzy.  
*/ ye=*m  
public class ImprovedQuickSort implements SortUtil.Sort { R h zf.kp  
vU0j!XqE  
private static int MAX_STACK_SIZE=4096; xZZW*d_b  
private static int THRESHOLD=10; Is&z~Xy/  
/* (non-Javadoc) ]S4TX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~n9BN'@x  
*/ L!s/0kBg  
public void sort(int[] data) { [ R1S+i  
int[] stack=new int[MAX_STACK_SIZE]; -f IX6  
*jM~VTXwt  
int top=-1; z6 2gF|Uj  
int pivot; F#>?i}  
int pivotIndex,l,r; ?3~]H   
S7&w r@  
stack[++top]=0; pt.0%3  
stack[++top]=data.length-1; UhQ[|c  
XF(0>-  
while(top>0){ JYB"\VV  
int j=stack[top--]; j3jf:7 /\  
int i=stack[top--]; flDe*F^  
#D~atgR  
pivotIndex=(i+j)/2; (1p[K-J)r  
pivot=data[pivotIndex]; <;< _f U  
>U.TkB  
SortUtil.swap(data,pivotIndex,j); 58)`1p\c'  
rt)70=  
file://partition ykcW>h  
l=i-1; t<s:ut)Q!  
r=j; zBD ?O!  
do{ N)|mA)S)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L1ZhH3}X  
SortUtil.swap(data,l,r); yo]!Zn  
} %> Z;/j|#r  
while(l SortUtil.swap(data,l,r); qXPjxTg{[  
SortUtil.swap(data,l,j); (]7&][  
yk OJhd3  
if((l-i)>THRESHOLD){ OEmz`JJ67  
stack[++top]=i; ]Tk3@jw+b  
stack[++top]=l-1; #ky]@vyO  
} l6Wa~E  
if((j-l)>THRESHOLD){ LN}eD\  
stack[++top]=l+1; /T&z :st0  
stack[++top]=j; TD:NL4dm  
} |;3Ru vX?+  
={,\6a|]:  
} ?;Dh^mc  
file://new InsertSort().sort(data); /4{ 6`  
insertSort(data); _|qJ)gD[  
} \x?q!(;G2  
/** ,5^XjU3c=  
* @param data by; %k/  
*/ )HbsUm#  
private void insertSort(int[] data) { $GhdH)  
int temp; ~?i;~S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7pH`"$  
} (8DJf"}  
} ZYDLl8  
} a_Y*pOu  
dU%Q=r8R  
} <?UbzT7X  
1%~yb Q  
归并排序: EUH&"8 L  
e aLSq  
package org.rut.util.algorithm.support; &5>R>rnB  
0gdFXh$!e  
import org.rut.util.algorithm.SortUtil; (XW\4msB)I  
h?E[28QB  
/** Gq%q x4  
* @author treeroot [@d$XC]Qz  
* @since 2006-2-2 KP{|xQ>  
* @version 1.0 B1dVHz#  
*/ ~ED8]*H|`  
public class MergeSort implements SortUtil.Sort{ ;|_aACina  
0G`_dMN  
/* (non-Javadoc) Y"~Tf{8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y+5nn  
*/ 8|k r|l  
public void sort(int[] data) { kDJ $kv  
int[] temp=new int[data.length]; wGdnv}#  
mergeSort(data,temp,0,data.length-1); qW*JB4`?a  
} BoQLjS{kN  
4FSA:]o-  
private void mergeSort(int[] data,int[] temp,int l,int r){ I\djZG$s;N  
int mid=(l+r)/2; 1OB,UU"S$  
if(l==r) return ; )yvI  {  
mergeSort(data,temp,l,mid); c'M#va  
mergeSort(data,temp,mid+1,r); #x-@ >{1k&  
for(int i=l;i<=r;i++){ u!I Es  
temp=data; sXHrCU  
} T"7Ue  
int i1=l; EC(,-sz\Z  
int i2=mid+1; ZC}'! $r7  
for(int cur=l;cur<=r;cur++){ &:1PF.)N  
if(i1==mid+1) &)jBr^x#>  
data[cur]=temp[i2++]; 4q sIJJ[.  
else if(i2>r) x\taG.'zX  
data[cur]=temp[i1++]; ct,B0(]  
else if(temp[i1] data[cur]=temp[i1++]; X"_,#3Ko!  
else gc``z9@Xg  
data[cur]=temp[i2++]; `o~ dQb/k+  
} iSD E6  
} *Ju$A  
K.3)m]dCl  
} %:i; eUKR  
+M4X r *  
改进后的归并排序: thG;~ W  
{ FVLH:{U^  
package org.rut.util.algorithm.support; }diB  
n0|oV(0FE  
import org.rut.util.algorithm.SortUtil; 3ZdheenK9  
_dOR-<  
/** fik*-$V`  
* @author treeroot g<C_3ap/  
* @since 2006-2-2 {Up@\M  
* @version 1.0 TZ#(G  
*/ <T]BSQk  
public class ImprovedMergeSort implements SortUtil.Sort { *sNZ.Y:.  
4n6EkTa  
private static final int THRESHOLD = 10; P<<?7_ ??  
qKoD*cl)Za  
/* &!/E&e$_  
* (non-Javadoc) "rhU2jT=c  
* \XDc{c]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Axb,{X[6g  
*/ R9=K/  
public void sort(int[] data) { Py^ _::  
int[] temp=new int[data.length]; k?(x}IZdG  
mergeSort(data,temp,0,data.length-1); yCznRd}J  
} 5=< y%VF  
) 0p9I0=  
private void mergeSort(int[] data, int[] temp, int l, int r) { [[uKakp  
int i, j, k; VVY#g%(K  
int mid = (l + r) / 2; n-X;JYQW  
if (l == r) [C1 .*Q+l  
return; 'Xj9sAB  
if ((mid - l) >= THRESHOLD) &f12Q&jY7  
mergeSort(data, temp, l, mid); w-f[h  
else P#e1?  
insertSort(data, l, mid - l + 1); M#<U=Ha  
if ((r - mid) > THRESHOLD) <'s_3AC  
mergeSort(data, temp, mid + 1, r); 8?p40x$m%  
else " S8JHHx  
insertSort(data, mid + 1, r - mid); k^A17Nf`2  
T-" zK r!  
for (i = l; i <= mid; i++) { gz{~\0y  
temp = data; | %E\?-TK  
} -1\*}m%1e  
for (j = 1; j <= r - mid; j++) { : ?K}.Kb  
temp[r - j + 1] = data[j + mid]; S"t6 *fWr  
} ryhme\%l;f  
int a = temp[l]; ;%-f>'KhI7  
int b = temp[r]; }^T7S2_Qy  
for (i = l, j = r, k = l; k <= r; k++) { Zp5;=8wa;  
if (a < b) { >lyX";X#  
data[k] = temp[i++]; 05$;7xnf(  
a = temp; ^]nnvvp  
} else { sZ~q|}D-  
data[k] = temp[j--]; LW+a-i  
b = temp[j]; RM^3Snd=V  
} SZ/}2_;  
} P''5A6#5  
} :.;p Rz  
4<`Qyul-  
/** t(<^of:  
* @param data K})=&<M0  
* @param l )SkJgzvC  
* @param i bCv=Uo,+6  
*/ DV={bcQ  
private void insertSort(int[] data, int start, int len) { U`{'-L.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "Jd!TLt\x  
} T{9pNf-  
} @|e4.(9A  
} I` `S%`h  
} YH_mWN\Wu  
+sN'Y/-  
堆排序: Yd} Jz  
Y}db<Cz X  
package org.rut.util.algorithm.support; c~_nO d  
96L-bBtyY  
import org.rut.util.algorithm.SortUtil; 1|]IWX|  
Vjv~RNGF  
/** 6Z5X?B  
* @author treeroot Ino$N|G[  
* @since 2006-2-2 ^,P# <,D,  
* @version 1.0 hLs<g!*O  
*/ x2q6y  
public class HeapSort implements SortUtil.Sort{ $0uh8RB  
RK7vR~kf<  
/* (non-Javadoc) wjJM\BKr`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wR7Ja cKv  
*/ C*+gQeK  
public void sort(int[] data) { Vrwy+o>:X  
MaxHeap h=new MaxHeap(); -4rXOmiA  
h.init(data); :v=^-&t  
for(int i=0;i h.remove(); n*'i{P]  
System.arraycopy(h.queue,1,data,0,data.length); ]4{ )VXod  
} Y]zy=8q  
DC&3=Nd  
private static class MaxHeap{ pQQN8Y~^Y  
Qs38VlR_m  
void init(int[] data){ tl:V8sYTP  
this.queue=new int[data.length+1]; d|P,e;m-  
for(int i=0;i queue[++size]=data; W^a-K  
fixUp(size); Ry$zF~[   
} \a_75^2  
} O\3 L x  
i~};5j(  
private int size=0; ]lX`[HX7  
xz$-_NWW  
private int[] queue; C:*=tD1  
fX ^h O+f  
public int get() { .Yw  
return queue[1]; }9Th`   
} (D.B'V#>  
:,@"I$>*/  
public void remove() { _Q9Mn-&qQ  
SortUtil.swap(queue,1,size--); )bd)noZi  
fixDown(1); $#ve^.VHv  
} -Kas9\VWEw  
file://fixdown :4Gc'b R  
private void fixDown(int k) { qjcPJ  
int j; #[ H4`hZ  
while ((j = k << 1) <= size) { &oz^dlw  
if (j < size %26amp;%26amp; queue[j] j++; p)u?x)w=  
if (queue[k]>queue[j]) file://不用交换 [~aRA'qJ{V  
break; Q)/V >QW  
SortUtil.swap(queue,j,k); b7^Db6qu  
k = j; $dxk;V  
} |41NRGgY  
} $wr B5m?  
private void fixUp(int k) { 2`|gnVw  
while (k > 1) { H%nA"-  
int j = k >> 1; D]?eRO9'  
if (queue[j]>queue[k]) f3>L/9[[<P  
break; y ;\m1o2  
SortUtil.swap(queue,j,k); 1BjMVMH  
k = j; Z! /!4(Fh  
} Q!91uNL  
} v)f;dq^z-  
Jbv[Ql#  
} R&-Vm3mc3  
 &x":  
} 2l4*6rYa(  
(&B`vgmb  
SortUtil: vcmB)P-T`O  
/wR,P  
package org.rut.util.algorithm; iBM;$0Y  
wHT]&fZ  
import org.rut.util.algorithm.support.BubbleSort; {4 y#+[  
import org.rut.util.algorithm.support.HeapSort; D2y[?RG  
import org.rut.util.algorithm.support.ImprovedMergeSort; IjPCaH.:t  
import org.rut.util.algorithm.support.ImprovedQuickSort; wHR# -g'  
import org.rut.util.algorithm.support.InsertSort; TQ,KPf$0U  
import org.rut.util.algorithm.support.MergeSort; |zkZF|-  
import org.rut.util.algorithm.support.QuickSort; zao=}j?  
import org.rut.util.algorithm.support.SelectionSort; cIS?EW]S%X  
import org.rut.util.algorithm.support.ShellSort; A_4.>g  
A6?!BB=]  
/** tl=H9w&@  
* @author treeroot 8ofKj:W]  
* @since 2006-2-2 rjo1  
* @version 1.0 *y0=sG1+D  
*/ R1/h<I:  
public class SortUtil { $(r/N"6)O2  
public final static int INSERT = 1; D}MCVNd^  
public final static int BUBBLE = 2; lEYAq'=  
public final static int SELECTION = 3; L25v7U  
public final static int SHELL = 4; {@&%Bq*&  
public final static int QUICK = 5; xXRlQ|84  
public final static int IMPROVED_QUICK = 6; 6Mj (B*c  
public final static int MERGE = 7; Z1y=L$t8  
public final static int IMPROVED_MERGE = 8; .N>Th/K8  
public final static int HEAP = 9; vTl7x  
r$cq2pkX  
public static void sort(int[] data) { 4G_At  
sort(data, IMPROVED_QUICK); 3FgTM(  
} CX}==0od  
private static String[] name={ $<s;YhM:u)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" J Q% D6b  
}; 7C>5XyyJ  
L)z`  
private static Sort[] impl=new Sort[]{ 1EemVZdY  
new InsertSort(), _/5#A+ ?  
new BubbleSort(), SjL&\),  
new SelectionSort(), ?/1Eu47  
new ShellSort(), K(3_1*e  
new QuickSort(), :Ldx^UO  
new ImprovedQuickSort(), =L]GQ=d  
new MergeSort(), Fd;%wWY.zm  
new ImprovedMergeSort(), ]ft}fU5C1  
new HeapSort() _ *.ImD  
}; h0aK}`/a  
0}3Xry,{  
public static String toString(int algorithm){ VK>Cf>  
return name[algorithm-1]; (Zoopkxw  
} P;U(2;9 N  
)Y &RMYy  
public static void sort(int[] data, int algorithm) { I /z`)  
impl[algorithm-1].sort(data); GO]5~ 4k  
} 5L y Wg2  
v+vM:At4  
public static interface Sort { i@L_[d^|j`  
public void sort(int[] data); C0}@0c  
} 60#eTo?}o  
>pm`(zLn  
public static void swap(int[] data, int i, int j) { 8)ykXx/f@  
int temp = data; B2^*Sr[  
data = data[j]; XI\P#"  
data[j] = temp; >e^^YR^  
} 'w8p[h (,  
} VCX^D)[-  
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