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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。 ?$ rSbw  
插入排序: I'"b3]DXG  
S@Rw+#QE  
package org.rut.util.algorithm.support; f<!3vAh  
{/f\lS.5g  
import org.rut.util.algorithm.SortUtil; RRYm.dMIw  
/** Dx<">4   
* @author treeroot A0L&p(i  
* @since 2006-2-2 Z#8O)GK  
* @version 1.0 M>Y ge~3  
*/ O0`k6$=6r  
public class InsertSort implements SortUtil.Sort{ ,~ ;_ -  
&[]0yNG  
/* (non-Javadoc) 7"L`|O?8)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x --buO  
*/ -8- BVU  
public void sort(int[] data) { 3Q-i%7l  
int temp; l=jfgsjc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L,I5/K6  
} _J<^'w^;%  
} n0o'ns  
} ] i;xeo,  
 ;d"F'd  
} ~=W|I:@  
Z,'#=K  
冒泡排序: z"`q-R }m  
9v7l@2/  
package org.rut.util.algorithm.support; &"bcI7uGT  
MMs#Y1dH  
import org.rut.util.algorithm.SortUtil; oH/6  
igNZe."V  
/** fJ!i%</V  
* @author treeroot 2l43/aCq  
* @since 2006-2-2 $4yv)6G  
* @version 1.0 0>#or$:6E  
*/ Y..   
public class BubbleSort implements SortUtil.Sort{ a}N m;5K  
\k?uh+xl  
/* (non-Javadoc) y( M-   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XW!a?aLNX  
*/ PCl@Ff  
public void sort(int[] data) { hdB.u^!  
int temp; |1d;0*HIgX  
for(int i=0;i for(int j=data.length-1;j>i;j--){ K\5'pp1  
if(data[j] SortUtil.swap(data,j,j-1); b2OVg +3  
} CJA5w[m  
} ,fS}c pV  
} (eS/Q%ZGK  
} vywd&7gK  
x\ieWF1  
} A^+G w\  
l?CUd7P(a  
选择排序: .k5 TQt  
Kfnn;  
package org.rut.util.algorithm.support; 8D[8(5  
Kp") %p#  
import org.rut.util.algorithm.SortUtil; [uxhdR`T  
1(C3;qlVD  
/** i3I'n*  
* @author treeroot VO ^ [7Y  
* @since 2006-2-2 V>}@--$c-r  
* @version 1.0 k$</7 IuH  
*/ 6 W/S?F~{  
public class SelectionSort implements SortUtil.Sort { @vWC "W  
'0_Z:\ laU  
/* %1ofu,%  
* (non-Javadoc) =PXQ X(_  
* '| Enc"U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ND[u$N+5x"  
*/ '0g1v7Gx  
public void sort(int[] data) { -L>\58`  
int temp; $M\|zUQu.  
for (int i = 0; i < data.length; i++) { IWeQMwg  
int lowIndex = i; )'8DK$.  
for (int j = data.length - 1; j > i; j--) { }^uUw&   
if (data[j] < data[lowIndex]) { =jvM$  
lowIndex = j; )e.Y"5My  
} eUvIO+av  
} p2}$S@GD  
SortUtil.swap(data,i,lowIndex); ,]@K6  
} $,ev <4I&  
} 'Im7^!-d  
xQ4D| &  
} |+Z, 7~!  
w)-@?jN  
Shell排序: <>GWSW  
sZFIQ)b9  
package org.rut.util.algorithm.support; }$u]aX<  
4kGA`XhS*  
import org.rut.util.algorithm.SortUtil; h: :'s&|  
24{!j[,q@  
/** .{D[!Dp#h  
* @author treeroot b u%p,u!  
* @since 2006-2-2 M.1bRB  
* @version 1.0 >Mj :'  
*/ LdI)  
public class ShellSort implements SortUtil.Sort{ r!V#@Md  
SEXeK2v  
/* (non-Javadoc) \.myLkm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kNUbH!PO  
*/ <%hSBDG!x  
public void sort(int[] data) { M|?qSFv:  
for(int i=data.length/2;i>2;i/=2){ U4%d #  
for(int j=0;j insertSort(data,j,i); iU9de  
} v3Tr6[9  
} wfM$JYfI  
insertSort(data,0,1); @!'Pr$`  
} c_}i(HQ  
rOyK==8/Fg  
/** YKf,vHau  
* @param data DF%\ 1C>  
* @param j * gr{{c  
* @param i kLR4?tX!  
*/ m46Q%hwV  
private void insertSort(int[] data, int start, int inc) { sI/Hcm  
int temp; \ lP c,8)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); oc?,8I[P5  
} 6(sqS~D  
} yU\&\fD>j  
} \v9IbU*js  
~-GgVi*I  
} *PMvA1eN=#  
Mr<2I  
快速排序: oaHg6PT!  
@Rj&9/\L  
package org.rut.util.algorithm.support; =DvFY]9{  
`"H!=`  
import org.rut.util.algorithm.SortUtil; Me yQ`%  
vi4u `  
/** 2al%J%  
* @author treeroot !Y!Cv %  
* @since 2006-2-2 @JT9utct  
* @version 1.0 5(1Zj`>'  
*/ Ul^/Dh  
public class QuickSort implements SortUtil.Sort{ Z*.fSmT8)  
vvv~n ]S6  
/* (non-Javadoc) T2Z;)e$m_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]G1{@r)  
*/ apF!@O^}y  
public void sort(int[] data) { AW&HWc~A  
quickSort(data,0,data.length-1); I7 pxi$8f  
} bsC~ 2S\o  
private void quickSort(int[] data,int i,int j){ Km8btS]n  
int pivotIndex=(i+j)/2; I.Co8is  
file://swap @y;N u   
SortUtil.swap(data,pivotIndex,j); " _jIqj6C  
#w*1 !  
int k=partition(data,i-1,j,data[j]); zwN;CD1  
SortUtil.swap(data,k,j); S h=E.!  
if((k-i)>1) quickSort(data,i,k-1); mG7Wu{~=U  
if((j-k)>1) quickSort(data,k+1,j); 1}tZ,w>  
y AU[A  
} |rH;}t|un  
/** :t?9$ dL  
* @param data i?z3!`m  
* @param i S6h=} V )  
* @param j e-,U@_B  
* @return xM9EO(u  
*/ F}DdErd!f  
private int partition(int[] data, int l, int r,int pivot) { R/waWz\D  
do{ pB|L%#.cW  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'v* =}k  
SortUtil.swap(data,l,r); PYkcGtVa_  
} '(5 &Sj/C  
while(l SortUtil.swap(data,l,r); l:a+o gm3  
return l; 4HVZ;,q  
} m( C7Fa  
lJi'%bOi  
} d;Z<")  
ZO2u[HSO>  
改进后的快速排序: [3nhf<O  
}pbyC  
package org.rut.util.algorithm.support; SDcxro|8i  
5z~Ji77!  
import org.rut.util.algorithm.SortUtil; j2cLb  
}Y(Q7l  
/** DIB Az s  
* @author treeroot :4}?%3&;  
* @since 2006-2-2 |VB}Kv  
* @version 1.0 tV9W4`Z2q  
*/ l$z[Vh^UU<  
public class ImprovedQuickSort implements SortUtil.Sort { d@b0z$<s  
tE]g*]o  
private static int MAX_STACK_SIZE=4096; ,ZJI]Q=!  
private static int THRESHOLD=10; COOazXtW  
/* (non-Javadoc) VCiJ]$`M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zid?yuP  
*/ #E2`KGCzW  
public void sort(int[] data) { Y$--Hp4   
int[] stack=new int[MAX_STACK_SIZE]; c,Zs. kC  
"6~pTHT  
int top=-1; U> (5J,G  
int pivot; 7OS\j>hb~  
int pivotIndex,l,r; uTpKT7t  
79~,KFct  
stack[++top]=0; I}p uN!  
stack[++top]=data.length-1; Xj&{M[k<  
UIvTC S  
while(top>0){ n4 KiC!*i0  
int j=stack[top--]; -WB? hmx  
int i=stack[top--]; QBR9BR  
)?%FU?2jrn  
pivotIndex=(i+j)/2; R$K.;  
pivot=data[pivotIndex]; 7,!Mmu  
9;&2LT7z  
SortUtil.swap(data,pivotIndex,j); P0Ds7xh]h  
R)I 8 )  
file://partition X8ev uN  
l=i-1; 82~UI'f \  
r=j; 25l6@7q.  
do{ r9uY ?M  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T73oW/.0X?  
SortUtil.swap(data,l,r); P~#!-9?  
} 3Ym5SrKK  
while(l SortUtil.swap(data,l,r); 4(R O1VWsb  
SortUtil.swap(data,l,j); Y` LZ/Tgk  
~{n_rKYV  
if((l-i)>THRESHOLD){ %+w>`k3(N  
stack[++top]=i; req=w;E:  
stack[++top]=l-1; ?f1%)]>   
} H#E   
if((j-l)>THRESHOLD){ 6ApW+/  
stack[++top]=l+1; bS&'oWy*B  
stack[++top]=j; N(dn"`8  
} blid* @-  
3LG}x/l  
} EX>>-D7L  
file://new InsertSort().sort(data); rzDqfecOmW  
insertSort(data); Eof1sTpA  
} )"WImf:*  
/** }[!;c+ke  
* @param data HoT5 5v!o  
*/ u z ` H  
private void insertSort(int[] data) { *-ZD-B*?  
int temp; C@buewk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e[i&2mM  
} .!U `,)I  
} XU2 HWa  
} nOkX:5  
zr&K0a{hc  
} L-Xd3RCD  
Fz?ON1\  
归并排序: Nk3 ]<#$  
Y">Q16(  
package org.rut.util.algorithm.support; )FMpfC>An  
3a:(\:?z  
import org.rut.util.algorithm.SortUtil; [=Np.:Y%  
({m["d  
/** YJuaQxs  
* @author treeroot |E53 [:p  
* @since 2006-2-2 !H~!i.m'-  
* @version 1.0 u7^Z7; J  
*/ (8GJLs 8  
public class MergeSort implements SortUtil.Sort{ %N/I;`  
kX'1.<[  
/* (non-Javadoc) _( w4\]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KAgiY4  
*/ ZZ!d:1'7  
public void sort(int[] data) { `vDg~o  
int[] temp=new int[data.length]; \tyL`& )  
mergeSort(data,temp,0,data.length-1); Wfu%,=@,  
} ZA2y  
kC01s  
private void mergeSort(int[] data,int[] temp,int l,int r){ U> e@m?  
int mid=(l+r)/2; 3 V8SKBS  
if(l==r) return ; Uk S86`.  
mergeSort(data,temp,l,mid); pA4/ '7nCl  
mergeSort(data,temp,mid+1,r); xE9^4-Px*  
for(int i=l;i<=r;i++){ FDbx"%A  
temp=data; $ ohwBv3S  
} ^dZ,Itho  
int i1=l; g|"z'_  
int i2=mid+1; >Eik>dQ a  
for(int cur=l;cur<=r;cur++){ HjGT{o  
if(i1==mid+1) A7VF >{L./  
data[cur]=temp[i2++]; T>g1! -^  
else if(i2>r) %T}{rU~X  
data[cur]=temp[i1++];  O5_[T43  
else if(temp[i1] data[cur]=temp[i1++]; eP &K]#  
else ;y=w :r\A  
data[cur]=temp[i2++]; Oq*a4_R'YV  
} 5Lu m$C c}  
} *%B%BJnX  
{ zlq6z  
} ^nkwT~Bya  
mTZlrkT  
改进后的归并排序: 6jCg7Su]  
;NRm ,  
package org.rut.util.algorithm.support; Jfo|/JQ  
)lB-D;3[_  
import org.rut.util.algorithm.SortUtil; |g8 ]WFc  
g\rujxHlH  
/** PA`b~Ct  
* @author treeroot jd]MC*%  
* @since 2006-2-2 "N4c>2Q  
* @version 1.0 \M:,Vg  
*/ rvw1'y  
public class ImprovedMergeSort implements SortUtil.Sort { Gg5vf]VFo  
& Radpb2p6  
private static final int THRESHOLD = 10; FE M_7M  
QHP^1W`  
/* gJs~kQU  
* (non-Javadoc) `'0opoQRe  
* Y)BKRS~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5kC#uk  
*/ t,k9:p  
public void sort(int[] data) { D@DK9?#  
int[] temp=new int[data.length]; dH?pQ   
mergeSort(data,temp,0,data.length-1); !RiPr(m@y  
} :".!6~:2  
tHJ1MDw'  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]Y;$~qQ  
int i, j, k; q69a-5q  
int mid = (l + r) / 2; eZ}FKg%2[  
if (l == r) LwY_6[Ef  
return; m6lNZb]  
if ((mid - l) >= THRESHOLD) JC>}(yQA  
mergeSort(data, temp, l, mid); 1;? L:A  
else 'v6Rd )E\z  
insertSort(data, l, mid - l + 1); s15f <sp  
if ((r - mid) > THRESHOLD) H#w?$?nIWu  
mergeSort(data, temp, mid + 1, r); -[ ^wYr=  
else (e F5?I  
insertSort(data, mid + 1, r - mid); ^,U&v;   
;pAkdX&b  
for (i = l; i <= mid; i++) { `f6Qd2\  
temp = data; tG%R_$*  
} pKr3(5~  
for (j = 1; j <= r - mid; j++) { JXPn <  
temp[r - j + 1] = data[j + mid]; uA}asm  
} (&njZdcb*  
int a = temp[l]; ;GH(A=}/Y  
int b = temp[r]; fF-V=Zf5  
for (i = l, j = r, k = l; k <= r; k++) { X 8[T*L.  
if (a < b) { u6(7#n02  
data[k] = temp[i++]; Z>CFH9  
a = temp; oL VtP  
} else { azE>uEsE  
data[k] = temp[j--]; &<tji8Dj  
b = temp[j]; !u7WCw.Dm  
} _`D760q}  
} ef!I |.FW  
} NA0hQGN}  
ry7(V:ic  
/** K.X% Q,XD  
* @param data (\WePOy&  
* @param l {/n$Y|TIQt  
* @param i v'_tna6`O  
*/ I"DV}jg6|  
private void insertSort(int[] data, int start, int len) { K"g[%O<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); tH W"eag  
} YI\^hP#  
} -p%=36n  
} &TK%igL  
} 1 ViDS  
Ef?_d]  
堆排序: m$@CwQj  
k] f 7 3r  
package org.rut.util.algorithm.support; OW #pBeX99  
'}!dRpx  
import org.rut.util.algorithm.SortUtil; vW]BOzK  
ipU"|{NK  
/** }bB_[+YV`{  
* @author treeroot jkD5Z`D  
* @since 2006-2-2 g|nPr)<  
* @version 1.0 $1?YVA7  
*/ 7 51\K`L  
public class HeapSort implements SortUtil.Sort{ N0.-#Qa  
` $zi?A:j  
/* (non-Javadoc) sZB$+~.:}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yTZbJx?m  
*/ {ifYr(|p`  
public void sort(int[] data) { !).D  
MaxHeap h=new MaxHeap(); <Ft.{aNq$c  
h.init(data); ^8fO3<Jg  
for(int i=0;i h.remove(); -2Ub'*qK  
System.arraycopy(h.queue,1,data,0,data.length); ueqR@i  
} fx_7B (  
fY-{,+ `'  
private static class MaxHeap{ <X;y 4lPZ  
u}ab[$Q5  
void init(int[] data){ j~L{=ojz%  
this.queue=new int[data.length+1]; H"n"Q:Yp  
for(int i=0;i queue[++size]=data; Xw![}L >  
fixUp(size); /yH:ur  
} . e]!i(5I  
} fQe-v_K  
2I#fwsb  
private int size=0; _A%z^&k(i  
m >'o&Hj  
private int[] queue; %Rg84tz  
*;4r|# LG  
public int get() { JEBx|U$'Y  
return queue[1]; .@xwl}o$OL  
} kOkgsQQ  
^oPf>\),C  
public void remove() { Mi:$<fEX  
SortUtil.swap(queue,1,size--); Ro? 4tGn  
fixDown(1); O/0m|~`iY  
} a0y;c@pkO  
file://fixdown `MEH/  
private void fixDown(int k) { 1p`XK";g  
int j; N}zQ)]xz+r  
while ((j = k << 1) <= size) { M~P}80I  
if (j < size %26amp;%26amp; queue[j] j++; &OWiA;e?f  
if (queue[k]>queue[j]) file://不用交换 1*(^<x+n  
break; $t[`}I }  
SortUtil.swap(queue,j,k); He&dVP  
k = j; e7 5*84  
} vek9. 4! ]  
} u[ "Pg  
private void fixUp(int k) { fWF\ V[  
while (k > 1) { QH#|R92:  
int j = k >> 1; C:$lH  
if (queue[j]>queue[k]) l}Jf;C*j1z  
break; 8?P@<Do%  
SortUtil.swap(queue,j,k); iK'bV<V&7  
k = j; k`kmmb>  
} -F@Rpfrj_#  
} s+o/:rrx Y  
z8jQaI]j  
} R\1#)3e0  
zziujs:  
} wD}[XE?S  
 `q%Z/!}  
SortUtil: qdNYY&6>?u  
LW0't} z  
package org.rut.util.algorithm; ;lnh;0B  
9`QWqu[  
import org.rut.util.algorithm.support.BubbleSort; KS3 /  
import org.rut.util.algorithm.support.HeapSort; ep>S$a*|  
import org.rut.util.algorithm.support.ImprovedMergeSort;  2o?!m2W  
import org.rut.util.algorithm.support.ImprovedQuickSort; cYmMO[4YG'  
import org.rut.util.algorithm.support.InsertSort; r9z/hm}E  
import org.rut.util.algorithm.support.MergeSort; lLyMm8E%pZ  
import org.rut.util.algorithm.support.QuickSort; ;' YM@n  
import org.rut.util.algorithm.support.SelectionSort; _`*x}  
import org.rut.util.algorithm.support.ShellSort; \oLRNr[F  
pZ%/;sxYa  
/** ,/ly|Dv  
* @author treeroot q2Ax-#  
* @since 2006-2-2 F=$2Gz 'RT  
* @version 1.0 ;v*$6DIC5  
*/ tWdj"n%  
public class SortUtil { KP -g<Zc  
public final static int INSERT = 1; c7L#f=Ot?  
public final static int BUBBLE = 2; <s)+V6 \E  
public final static int SELECTION = 3; v/}M _E  
public final static int SHELL = 4; B&+V%~/  
public final static int QUICK = 5; w*uHB;?  
public final static int IMPROVED_QUICK = 6; Vq -!1.v3  
public final static int MERGE = 7; B/c_pRl;  
public final static int IMPROVED_MERGE = 8; |wQ|h$|  
public final static int HEAP = 9; 0^?(;AK  
VfAIx]Fa  
public static void sort(int[] data) { ?SkYFa`u*  
sort(data, IMPROVED_QUICK); \[% [`m  
} .3 m^yo c/  
private static String[] name={ c<r`E  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xT#j-T  
}; `LEk/b1(P  
9<W0'6%{/  
private static Sort[] impl=new Sort[]{ (|Y[5O)  
new InsertSort(), qXn %c"  
new BubbleSort(), ]}<wS ]1  
new SelectionSort(), V+W,# 5  
new ShellSort(), JLp.bxx  
new QuickSort(), .ss/E  
new ImprovedQuickSort(), L*6Tz'Qp  
new MergeSort(), w(]Q `  
new ImprovedMergeSort(), h?p&9[e`  
new HeapSort() A?06fo,  
}; b6 &`]O;%  
;Bd0 =C  
public static String toString(int algorithm){ LZqx6~]O  
return name[algorithm-1]; XwOj`N{!H  
} 5Y"JRWC  
JVD#wwic  
public static void sort(int[] data, int algorithm) { Y4YA1F  
impl[algorithm-1].sort(data); ]6v6&YV  
} O{y2tz3  
\h~;n)FI  
public static interface Sort { -5l74f!i  
public void sort(int[] data); qY]IX9'kV  
} B5hk]=Ud  
lY yt8H  
public static void swap(int[] data, int i, int j) { 4E}]>  
int temp = data; "<SK=W  
data = data[j]; +O`0Mc$%'  
data[j] = temp; )zkk%mE/IM  
} J GnL[9P_  
} _fz-fG 1  
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