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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。 `*Jw[Bnh8  
插入排序: Ge4 tc  
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package org.rut.util.algorithm.support; {#%;HqP  
}$1Aw%p^  
import org.rut.util.algorithm.SortUtil; Gq^#.o]  
/** ai~JY[  
* @author treeroot }NETiJ"6  
* @since 2006-2-2 8A|i$#.&  
* @version 1.0 2s8(r8AI  
*/ 0%5x&vx'S  
public class InsertSort implements SortUtil.Sort{ z,/y2H2  
M ^~  
/* (non-Javadoc) l%9nA.M'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) My\  
*/ V39)[FH}  
public void sort(int[] data) { >jBnNA@  
int temp; o!M*cyq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); AZadNuL/  
} ^p!bteA>  
} s*W)BK|+?  
} w\3'wD!  
7`6JK  
} Id'@!U:NA  
ti9 cfv>  
冒泡排序: &)|3OJ'o  
[8C6%n{W  
package org.rut.util.algorithm.support; &-6 D'@  
k0R;1lZ0n  
import org.rut.util.algorithm.SortUtil; |A@Gch fd  
=v]eQIp  
/** "6%vVi6  
* @author treeroot 9@|X~z5E  
* @since 2006-2-2 b3!,r\9V  
* @version 1.0 hX@.k|Yd  
*/ =m= utd8  
public class BubbleSort implements SortUtil.Sort{ u(|k/~\  
=.Q|gZ   
/* (non-Javadoc) ;j/-ndd&&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jZ>'q/  
*/ )04lf*ti  
public void sort(int[] data) { ';?b99  
int temp; /A) v $Bv=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ O[fgn;@|  
if(data[j] SortUtil.swap(data,j,j-1); ]]Da/^K=Z  
} +kTa>U<?  
} JSQ*8wDcl  
} .o5r;KD  
} o$r]Z1  
!j.jvI%e;  
} ;.r >  
g$ *V A} s  
选择排序: zorTZ #5  
/< CjBW:  
package org.rut.util.algorithm.support; ;{~F7:i  
'3@WF2a  
import org.rut.util.algorithm.SortUtil; 6'6@VB  
>AW=N  
/** '2%/h4jY  
* @author treeroot =}~h bPJM  
* @since 2006-2-2 KCed!OJ+  
* @version 1.0 S,,3h0$X  
*/ RKP->@Gs  
public class SelectionSort implements SortUtil.Sort { U;:,$]+  
+xlxhF  
/* YA>du=6y\  
* (non-Javadoc) `$\Y,9E}x  
* @.X}S "yr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $|YIr7?R  
*/ c#e_Fs  
public void sort(int[] data) { Q(KLx)  
int temp; 0fPqO2  
for (int i = 0; i < data.length; i++) { 5i$~1ZC  
int lowIndex = i; 4 1TB  
for (int j = data.length - 1; j > i; j--) { e+F5FAMR68  
if (data[j] < data[lowIndex]) { K/u`W z~A  
lowIndex = j; SS;QPWRZ  
} FBcF  
} Zh.fv-Ecp  
SortUtil.swap(data,i,lowIndex); n]@+<TA<uA  
} <nj[=C4v  
} )gCHwu  
k852M^JP  
} soZw""|v  
QW f)5S  
Shell排序: Rh%/xG#k  
aM9St!i  
package org.rut.util.algorithm.support; _|Ml6;1aZ  
L&'0d$Tg8  
import org.rut.util.algorithm.SortUtil; rQ'tab.,]  
v) q6  
/** k[ Iwxl;/  
* @author treeroot 8Db~OYVJG  
* @since 2006-2-2 bhSpSul  
* @version 1.0 < P5;8  
*/ q9oF8&O,  
public class ShellSort implements SortUtil.Sort{ Co19^g*  
=D4EPfQn1  
/* (non-Javadoc) LZG^\c$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v-) eT  
*/ g}3c r .  
public void sort(int[] data) { *ma/_rjK  
for(int i=data.length/2;i>2;i/=2){ Em@h5V  
for(int j=0;j insertSort(data,j,i); K. R2)o`  
} E!VAA=  
} [JVI@1T  
insertSort(data,0,1); FV$= l %  
} tb0XXE E  
@6$r| :]G-  
/** $#@4i4TN-  
* @param data 9MLvHrB;  
* @param j ),\>'{~5&  
* @param i `z)!!y  
*/ NI(`o8fN  
private void insertSort(int[] data, int start, int inc) { "`"j2{9|e!  
int temp; GKY:"q&h  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); nHKEtKDd  
} 0m`7|80#P  
} 7"xd'\c@  
} 4'54  
n/?5[O-D]  
} 5.[{PJ]bq  
9$Mi/eLG2N  
快速排序: dY\"'LtF  
e|Sg?ocR  
package org.rut.util.algorithm.support; =b%J@}m`&  
!icpfxOpjQ  
import org.rut.util.algorithm.SortUtil; YC=BP5^  
h;4g#|,  
/** |7`Vw Z  
* @author treeroot Uzb"$Ue4  
* @since 2006-2-2 M:`hb$k:  
* @version 1.0 4Ro(r sO  
*/ BQS9q'u_  
public class QuickSort implements SortUtil.Sort{ .4!N #'  
N`Bt|#R  
/* (non-Javadoc) a LmVOL{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ? 3}UO:B  
*/ Xe+&/J5b  
public void sort(int[] data) { d;<n [)@  
quickSort(data,0,data.length-1); rY!uc!  
} DAu|`pyC%  
private void quickSort(int[] data,int i,int j){ Xq>e]#gR  
int pivotIndex=(i+j)/2; -;P<Q`{I  
file://swap N^ D/}n  
SortUtil.swap(data,pivotIndex,j); Xb^\{s?b  
_f3A6ER`  
int k=partition(data,i-1,j,data[j]); M2@q{RiS  
SortUtil.swap(data,k,j); b=|&0B$E  
if((k-i)>1) quickSort(data,i,k-1); |}M']Vz  
if((j-k)>1) quickSort(data,k+1,j); 9x?;;qC"m9  
o@>c[knJ  
} Etu>z+P!  
/** xD\Km>|i  
* @param data Q"hI!PO+  
* @param i (v  4  
* @param j 5GJ0EZ'X  
* @return ;2@sn+@  
*/ "ZyHt HAK  
private int partition(int[] data, int l, int r,int pivot) { P/I{q s  
do{ " DlC vjc  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @eT sS%f2  
SortUtil.swap(data,l,r); Ar<OP'C  
} / a$+EQ$  
while(l SortUtil.swap(data,l,r); D`t e|K5  
return l; rmMO-!s  
} Yip9K[  
pz&=5F  
} jujx3rnK?  
D} .t  
改进后的快速排序: 3-mw-;.  
+1)C&:  
package org.rut.util.algorithm.support; 9>i6oF]Oq  
L\Jl'r|  
import org.rut.util.algorithm.SortUtil; Pm1 " 0  
@Qs-A^.  
/** 1=;QWb6  
* @author treeroot m|]^f;7z  
* @since 2006-2-2 D+SpSO7yg  
* @version 1.0  Nr[Rp  
*/ \OU+Kl<  
public class ImprovedQuickSort implements SortUtil.Sort { YjX=@  
42wcpSp  
private static int MAX_STACK_SIZE=4096; MtYP3:  
private static int THRESHOLD=10; 5pok%g  
/* (non-Javadoc) *[SsvlFt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H*\[:tPa  
*/ .d "+M{I  
public void sort(int[] data) { oX}n"5o:  
int[] stack=new int[MAX_STACK_SIZE]; R{[Q+y'E  
"T&uS1+=c  
int top=-1; uWWv`bI>x  
int pivot; Un/fP1  
int pivotIndex,l,r; %b{!9-n}  
^ Wl/  
stack[++top]=0; *.*:(7`  
stack[++top]=data.length-1; DO\EB6xH>%  
J7\q #]?  
while(top>0){ mNeW|3a  
int j=stack[top--]; x>J3tp$2  
int i=stack[top--]; W vJ?e  
Pu^~]^W)  
pivotIndex=(i+j)/2; 5i^vN"J  
pivot=data[pivotIndex]; tbPPI)lu  
p&4n3%(R@  
SortUtil.swap(data,pivotIndex,j); ZWa#}VS}-n  
OV/FQH;V  
file://partition )j6>b-H   
l=i-1; *h4m<\^U  
r=j; Az-!LAu9 R  
do{ 3E ZwF  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =CVT8(N*  
SortUtil.swap(data,l,r); hX_p5a1t  
} A pjqSz"  
while(l SortUtil.swap(data,l,r); Q$vr`yV#=6  
SortUtil.swap(data,l,j); YW{V4yW  
? g{,MP5  
if((l-i)>THRESHOLD){ =| !~0O  
stack[++top]=i; h(8;7} K  
stack[++top]=l-1; o3yqG#dA  
} K D-_~uIF  
if((j-l)>THRESHOLD){ PbPP1G')  
stack[++top]=l+1; BLH=:zb5  
stack[++top]=j; :'dc=C  
} X}-H=1T?  
f`,Hr?H  
} .O#lab`:2  
file://new InsertSort().sort(data); 'U"3'jh  
insertSort(data); Gx!RaZ1  
} CCY|FK  
/** k@aP&Z~  
* @param data 8@aS9 th$  
*/ Rdg0WT*;j  
private void insertSort(int[] data) { O|RO j  
int temp; DjIswI1I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #(IMRdUf  
} )M N yOj  
} #Q@6:bBzv  
} XC1lo4|  
;0!Wd  
} 9,5II0N L  
62x< rph  
归并排序: &&]!+fTZ\(  
vEe  
package org.rut.util.algorithm.support; ++!E9GU{  
&{/>Sv!6#  
import org.rut.util.algorithm.SortUtil; i`aG  
YB{E= \~  
/** #=H}6!18  
* @author treeroot JX)z<Dz$  
* @since 2006-2-2 Cj1UD;  
* @version 1.0 ,:(leWeA9  
*/ *wB-lg7%  
public class MergeSort implements SortUtil.Sort{ ,A!e"=HF  
MJ9SsC1  
/* (non-Javadoc) jN} 7Bb X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ePpK+E[0Z  
*/ ~fp+@j-A  
public void sort(int[] data) { 3t8H?B12ow  
int[] temp=new int[data.length]; /Z " 4[  
mergeSort(data,temp,0,data.length-1); O|&TL9:  
} D Ok^ON  
Hs}"A,V  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]A]E)*  
int mid=(l+r)/2; 8Qz7uPq  
if(l==r) return ; RpK,ixbtA+  
mergeSort(data,temp,l,mid); 7 3z Y^ x  
mergeSort(data,temp,mid+1,r); 9H}iX0O  
for(int i=l;i<=r;i++){ ~}0hN]*G  
temp=data; K^vp(2  
} z){UuiUM+=  
int i1=l; [a)~Dui0@\  
int i2=mid+1; +R#`j r"  
for(int cur=l;cur<=r;cur++){ pt cLJ]+)  
if(i1==mid+1) 8*#][ wC2  
data[cur]=temp[i2++]; ]az} n(B,  
else if(i2>r) 6>BDA?  
data[cur]=temp[i1++]; kw^Dp[8X  
else if(temp[i1] data[cur]=temp[i1++]; @!a]qAt  
else D^s0EW-E  
data[cur]=temp[i2++]; ;]ShC\1  
} 5652'p  
} Z^`=!n-V  
ar qLp|  
} y[WYH5 &DJ  
D ,ZNh1xt  
改进后的归并排序: #8f"}>U9.,  
.-u k   
package org.rut.util.algorithm.support; txfwLqx  
Pv-V7`{  
import org.rut.util.algorithm.SortUtil; lzy$.H"W  
mERZ_[a2  
/** _ K+V?-=  
* @author treeroot 0HJqsSZ$mW  
* @since 2006-2-2 2V2x,!  
* @version 1.0 UE,~_hp  
*/ ~R?dDL  
public class ImprovedMergeSort implements SortUtil.Sort { PDq}Tq  
8P<UO  
private static final int THRESHOLD = 10; T3t~=b>&L  
Ul713Bjz  
/* {8Jk=)(md  
* (non-Javadoc) mf;^b.mKh  
* h [|zs>p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FP'u)eU&3  
*/ SeZT4y*=  
public void sort(int[] data) { G E~(N N  
int[] temp=new int[data.length]; 1[/$ZYk:  
mergeSort(data,temp,0,data.length-1); N]s7/s  
} vzyI::f?  
!Ir1qt8 T  
private void mergeSort(int[] data, int[] temp, int l, int r) {  `\|3 ~_v  
int i, j, k; _/]:=_bf_z  
int mid = (l + r) / 2; G\:psx/  
if (l == r) M*~v'L_sI  
return; 6KCCbg/  
if ((mid - l) >= THRESHOLD) &v auLp  
mergeSort(data, temp, l, mid); >.O*gv/ _  
else kk /+Vx~  
insertSort(data, l, mid - l + 1); %j[LRY/  
if ((r - mid) > THRESHOLD) YK w!pu=  
mergeSort(data, temp, mid + 1, r); ZLN_,/7  
else 1^60I#Vr@  
insertSort(data, mid + 1, r - mid); W]!@Zlal  
l\sS?  
for (i = l; i <= mid; i++) { 2 -p  
temp = data; ycl>git]  
} ] EVe@  
for (j = 1; j <= r - mid; j++) { ^!o1l-Y^gr  
temp[r - j + 1] = data[j + mid]; !7kLFW  
} H81.p  
int a = temp[l]; PX69  
int b = temp[r]; iA%' ;V  
for (i = l, j = r, k = l; k <= r; k++) { @!&Jgg53G  
if (a < b) { #lyM+.T  
data[k] = temp[i++]; K[#v(<)  
a = temp; Qw6KX#n  
} else { p-i.ITRS  
data[k] = temp[j--]; |auX*hb9  
b = temp[j]; 1O]5/Eu  
} f1CMR4D  
} !rsa4t@ t  
} |?2 hml  
i!.I;@  
/** Wlr&g xZ  
* @param data ET,0ux9F  
* @param l %Vw|5yA4  
* @param i X@ bn??  
*/ QWz Op\+  
private void insertSort(int[] data, int start, int len) { r(,= uLc  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); da9*9yN  
} (pT(&/\8  
} co$Hi9JE  
} z|G|Y 22  
} jHu,u|e0>S  
,#P,B ;r~  
堆排序: &Hlm{FHU  
7z/(V\9B  
package org.rut.util.algorithm.support; <m Ju v  
+3/k/W  
import org.rut.util.algorithm.SortUtil; *w'q  
Q3NPwM  
/** wr3_Bf3]  
* @author treeroot xs2,t*  
* @since 2006-2-2 f!M[awj%  
* @version 1.0 Z^'?|qFj!  
*/ &J lpA<^s;  
public class HeapSort implements SortUtil.Sort{ j.=UI-&m  
|<j,Tr1[  
/* (non-Javadoc) }@rg5$W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9S:{  
*/ v+!y;N;Q  
public void sort(int[] data) { fCt^FU  
MaxHeap h=new MaxHeap(); /RJ6nmN@}  
h.init(data); DD12pL{QA  
for(int i=0;i h.remove(); zz(!t eBC  
System.arraycopy(h.queue,1,data,0,data.length); 3~[`[4n^  
}  _DPB?)!x  
e5qrQwU  
private static class MaxHeap{ i ll-%OPeg  
{h/OnBwG  
void init(int[] data){ %XEKhy  
this.queue=new int[data.length+1]; 0On? {Bw  
for(int i=0;i queue[++size]=data; qYgwyj=4  
fixUp(size); kfMhw M8kP  
} QHHW(InG<  
} ZdE>C   
a)3O? Y  
private int size=0; Vl5SL{+D  
_o@(wGeu#  
private int[] queue; G$?|S@I,  
4zo4H~@gk  
public int get() { ~q0I7M  
return queue[1]; [,OJX N-4s  
} '}U_D:o.b  
Zdv.PGn  
public void remove() { u-AWJc+F.  
SortUtil.swap(queue,1,size--); V,>+G6e  
fixDown(1); *'UhlFed  
} 0K=Qf69Y  
file://fixdown CCbkxHMf|!  
private void fixDown(int k) { .dD9&n;#^  
int j; B<|:K\MA  
while ((j = k << 1) <= size) { 1*C:h g@  
if (j < size %26amp;%26amp; queue[j] j++; 8q]J;T  
if (queue[k]>queue[j]) file://不用交换 Wmzq  
break; !1ML%}vvB,  
SortUtil.swap(queue,j,k); t{/hkXq]  
k = j; ,sO:$  
} (H&@u9K?a?  
} qSFc=Wwc  
private void fixUp(int k) { vVI6m{zYV  
while (k > 1) { j2RRSz&9  
int j = k >> 1; [leW/2i  
if (queue[j]>queue[k]) Um]p&phVL  
break; Sg-g^ dIN1  
SortUtil.swap(queue,j,k); VK@$JwdL  
k = j; U8CWz!;Qz  
} 6BDt.bG  
} |BwRlE2CFO  
El~-M`Gf  
} UH5w7M  
W[@i;f^g  
} ,/i_QgP  
k/df(cs  
SortUtil: @O@fyAz  
{SF[I  
package org.rut.util.algorithm; J&A;#<qY  
M-{*92y& |  
import org.rut.util.algorithm.support.BubbleSort; RXGHD19]  
import org.rut.util.algorithm.support.HeapSort; 6!ZVd#OM%  
import org.rut.util.algorithm.support.ImprovedMergeSort; \.c]kG>k-  
import org.rut.util.algorithm.support.ImprovedQuickSort; M6J/mOVx5  
import org.rut.util.algorithm.support.InsertSort; zL9VR;q  
import org.rut.util.algorithm.support.MergeSort; ~}h^38  
import org.rut.util.algorithm.support.QuickSort; ,5/V@;i  
import org.rut.util.algorithm.support.SelectionSort; q.-y)C) ;  
import org.rut.util.algorithm.support.ShellSort; _ e6a8  
>R(8/#|E  
/** \M7I&~V  
* @author treeroot {I`B[,*  
* @since 2006-2-2 CV s8s  
* @version 1.0 *i`v~ >  
*/ UE^D2u  
public class SortUtil { -g:lOht  
public final static int INSERT = 1; DKh}Y !Q=:  
public final static int BUBBLE = 2; L'>s(CR  
public final static int SELECTION = 3; 1<`9HCm  
public final static int SHELL = 4; w|=gSC-o  
public final static int QUICK = 5; N6h1|_o  
public final static int IMPROVED_QUICK = 6; 6MuWlCKF8  
public final static int MERGE = 7; +W6Hva.  
public final static int IMPROVED_MERGE = 8; ,*7H|de7   
public final static int HEAP = 9; Am=wEu[b  
Hz E1r+3Q@  
public static void sort(int[] data) { WNhbXyp_  
sort(data, IMPROVED_QUICK); H6_xwuw:  
} [!G)$<  
private static String[] name={ 4RhR[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" +)gGs# 2X  
}; Wdo#?@m  
,E&Bn8L~O  
private static Sort[] impl=new Sort[]{ u,f A!  
new InsertSort(), v51EXf  
new BubbleSort(), U| 8[#@r  
new SelectionSort(), So#dJ>   
new ShellSort(), 5^>n5u/  
new QuickSort(), ^OF5F8Tf/  
new ImprovedQuickSort(), |=\91fP68`  
new MergeSort(), Raefj(^V  
new ImprovedMergeSort(), 1  o|T  
new HeapSort() X:_<Y_JT  
}; Rv vh{U;t  
s|Zx(.EP  
public static String toString(int algorithm){ 8zZSp  
return name[algorithm-1]; ^;zWWg/d  
} en>9E.?N  
s;J\Kc?"|  
public static void sort(int[] data, int algorithm) { m=QCG)s  
impl[algorithm-1].sort(data); vh &GIb  
} Ivsb<qzG  
rR]-RX(  
public static interface Sort { 4YLs^1'TG0  
public void sort(int[] data); 2/@D7>F&g  
} [h4o7  
E:FO_R(Xq  
public static void swap(int[] data, int i, int j) { 8Y# bN*!  
int temp = data; %w7m\nw@  
data = data[j]; ZW*n /#GUC  
data[j] = temp; JvkL37^ n:  
} ^n9a " qz  
} ,-@5NY1q  
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