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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。 0-yp,G  
插入排序: mah JSz(3  
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package org.rut.util.algorithm.support; $#pP Z  
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import org.rut.util.algorithm.SortUtil; OCaq3_#tZ  
/** TOXfWEU3>  
* @author treeroot e)#J1(j_  
* @since 2006-2-2 c*L\_Vx+  
* @version 1.0 iq( E'`d  
*/ EkNunCls  
public class InsertSort implements SortUtil.Sort{ @? QoF#D  
jeH~<t{  
/* (non-Javadoc) .Blf5b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L4z ~B!uvF  
*/ ww $  
public void sort(int[] data) { qPy1;maXP  
int temp; kN4{13Qs*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 64G[|" j D  
} k" PayyAC  
} 5T2CISmu  
} ``\i58K{e  
*>2W#D)b=  
} dS!:JO27  
*ipFwQ  
冒泡排序: MUREiL9L|  
4UvZ)^r  
package org.rut.util.algorithm.support; MWpQ^dL_  
,*hLFaR-  
import org.rut.util.algorithm.SortUtil; pRIhFf  
p=GBUII #  
/** g<f <Ip=  
* @author treeroot ?+W 9az]+  
* @since 2006-2-2 VZymM<O  
* @version 1.0 y8!4q  
*/ p,>5\Zre~  
public class BubbleSort implements SortUtil.Sort{ L`p4->C9A  
D rHV G  
/* (non-Javadoc) *%fi/bimG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v>Yb/{A  
*/ <[\`qX  
public void sort(int[] data) { v|%Z+w  
int temp; '~[d=fwH  
for(int i=0;i for(int j=data.length-1;j>i;j--){ e2t-4} ww  
if(data[j] SortUtil.swap(data,j,j-1); QaS7z#/?.  
} h WtVWVNL  
} 2ZMb<b4H  
} e .2ib?8  
} {kCw+eXn?  
p~^D\jR.  
} 'H&2HXw&2  
XJ` ]ga  
选择排序: Z/0fXn})  
(SDr!!V<  
package org.rut.util.algorithm.support; uU <=d  
_c*=4y  
import org.rut.util.algorithm.SortUtil; s{S4J'VW  
M&@b><B  
/** &d+Kg0:  
* @author treeroot 0y;*Cfi9  
* @since 2006-2-2 )Sg~[WxDv  
* @version 1.0 hj B@o#S  
*/ dWUm\t'#  
public class SelectionSort implements SortUtil.Sort { "UGY2skf;  
_w/EP  
/* 4UlyxA~   
* (non-Javadoc) w' OXlR  
* I^UC&5dC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /F-qP.<D,r  
*/ 57zSu3v4Y  
public void sort(int[] data) { =Ja]T~0A  
int temp; (\a]"g,]v  
for (int i = 0; i < data.length; i++) { 1+qw$T  
int lowIndex = i; t2"O  
for (int j = data.length - 1; j > i; j--) { qnJt5  
if (data[j] < data[lowIndex]) { f3&[#%  
lowIndex = j; ;WM"cJo9  
} $Ifmc`r1  
} cU@SIJ)  
SortUtil.swap(data,i,lowIndex); `U)hjQ~pP  
} "B4;,+4kR  
} 2`>ToWN!  
R)z4n  
} 7X q,z  
#Jn_c0  
Shell排序: p|jV{P  
Wi2WRJdyu  
package org.rut.util.algorithm.support; &8>IeK {I  
)Xak JU^o  
import org.rut.util.algorithm.SortUtil; ^m"u3b4  
e2ilB),  
/** feNdMR7eM  
* @author treeroot zj`v?#ET  
* @since 2006-2-2 pUq1|)g  
* @version 1.0 [*HN"  
*/ 4.h=&jz&  
public class ShellSort implements SortUtil.Sort{ X M#T'S9y8  
.ir<s>YM  
/* (non-Javadoc) Q/I! }C4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }YMy6eW4  
*/ x&9hI  
public void sort(int[] data) { C\nhqkn  
for(int i=data.length/2;i>2;i/=2){ 6morum  
for(int j=0;j insertSort(data,j,i); 2f:Eof(B  
} }i`PGx  
} {Jx4xpvPo  
insertSort(data,0,1); gu<'QV"  
} ("+}=*?OF3  
kc @[9eV  
/** zG9Y!SY\-  
* @param data !n$tr  
* @param j AvSM ^  
* @param i k RD%b[*d  
*/ :GW&O /Yo  
private void insertSort(int[] data, int start, int inc) { Xn,v]$M!  
int temp; Bj}^\Pc;}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7#U^Dx\yh  
} Tp?y8r  
} D]W$?( =4  
} WxJf{=-  
ks97k8B  
} O:"*q&;J  
+$(2:S*r  
快速排序: J?}WQLVP'  
:.d:9Z|_  
package org.rut.util.algorithm.support; _5m#2u51i  
*gF<m9&  
import org.rut.util.algorithm.SortUtil; 0i|oYaC  
CQr<N w  
/** GbA.UM ~  
* @author treeroot eKz?"g/j  
* @since 2006-2-2 ]%Nlv(  
* @version 1.0 r"a5(Q;n  
*/ 0}FOV`n  
public class QuickSort implements SortUtil.Sort{ M=*bh5t%]  
{^rs#, W  
/* (non-Javadoc) ofMY,~w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C?=P  
*/ V8wKAj Ux  
public void sort(int[] data) { ;?~$h-9)  
quickSort(data,0,data.length-1); p=B>~CH  
} 5"]~oPK  
private void quickSort(int[] data,int i,int j){ k({\/t3i  
int pivotIndex=(i+j)/2; 3ZZV<SS  
file://swap o|iYd n\  
SortUtil.swap(data,pivotIndex,j); z%7SrUj2  
j.ldaLdG  
int k=partition(data,i-1,j,data[j]); st &  
SortUtil.swap(data,k,j); j:&4-K};Z`  
if((k-i)>1) quickSort(data,i,k-1); *;U'[H3Q  
if((j-k)>1) quickSort(data,k+1,j); <zy,5IlD  
jWO/ xX  
} IU]^&e9u  
/** 'snn~{hG  
* @param data s(LT  
* @param i Af5D>/  
* @param j ,j ',x\  
* @return qcJft'>F  
*/ 8; R|  
private int partition(int[] data, int l, int r,int pivot) { <U9/InN0[  
do{ mNAY%Wn6k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d ~_`M0+  
SortUtil.swap(data,l,r); omf  Rs  
} W Qzj[  
while(l SortUtil.swap(data,l,r); LaIJ1jf  
return l; F;!2(sPS  
} '[(nmx'yVJ  
Q2%QLM:.,  
} \#x}q'BC4  
s;YKeE!8  
改进后的快速排序: F'?I-jtI  
6V+ qnUk  
package org.rut.util.algorithm.support; daAyx-  
"$5\,  
import org.rut.util.algorithm.SortUtil; }T0K^Oe+eS  
DrvtH+e  
/** 5NXt$k5  
* @author treeroot a)! g7u  
* @since 2006-2-2 RQvVR  
* @version 1.0 8{Fm[ %"  
*/ Zx?b<"k  
public class ImprovedQuickSort implements SortUtil.Sort { Qc{RaMwD  
4oXbPr>  
private static int MAX_STACK_SIZE=4096; L1)@z8]   
private static int THRESHOLD=10; tue/4Q#7  
/* (non-Javadoc) =vh8T\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =FBpo2^QB;  
*/ qkP/Nl. u  
public void sort(int[] data) { /WnE:3G  
int[] stack=new int[MAX_STACK_SIZE]; ]y)Q!J )Q  
baoD(0d  
int top=-1; ]`w}+B'/  
int pivot; \Z-2leL)j  
int pivotIndex,l,r; :H[\;Z1_  
f.pkQe(  
stack[++top]=0; `Xc irfp  
stack[++top]=data.length-1;  QI!i  
#S+Z$DQD  
while(top>0){ L8vOBI7N  
int j=stack[top--]; -#A:`/22  
int i=stack[top--]; c;I, O  
+MO E  
pivotIndex=(i+j)/2; FF Gqa&  
pivot=data[pivotIndex]; e}cnX`B  
Hwe)Tsh e  
SortUtil.swap(data,pivotIndex,j); s3lwu :4f  
@#b0T:+v'  
file://partition mg+k'Myo+  
l=i-1; ~HUZ#rUHm>  
r=j; 9 K  
do{ )3muPMaY  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $ A-b vL  
SortUtil.swap(data,l,r); F}rPY:  
} 4W\,y_Q o  
while(l SortUtil.swap(data,l,r); ]Bb7(JX  
SortUtil.swap(data,l,j); mKg@W;0ML  
ke.7Zp2.R  
if((l-i)>THRESHOLD){ GZ0aOpUWVq  
stack[++top]=i; WY)^1Gb$ux  
stack[++top]=l-1; s"0b%0?A  
} o;-<|W>  
if((j-l)>THRESHOLD){ }Pg' vJW  
stack[++top]=l+1; 0v"&G<J  
stack[++top]=j; Wc#:f 8dr  
} Ha ZFxh-(  
bEr.nF  
} %f[Ep 3D  
file://new InsertSort().sort(data); de-0?6  
insertSort(data); 8tWE=8<  
} >3 Ko.3&  
/** n'64;J5  
* @param data Q59/ex  
*/ BxX$5u  
private void insertSort(int[] data) { {u 30r c"  
int temp; c%YDt`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A:Rw@ B$  
} t58m=4  
} TIRHT`"i  
} .~dEUt/|)  
:+kUkb-/  
} o*7yax  
i1/}XV  
归并排序: 12r` )  
4NVgOr:  
package org.rut.util.algorithm.support; &?$\Y,{  
Cals?u#U=  
import org.rut.util.algorithm.SortUtil; B {i&~k  
Tj,Nmb>Q7'  
/** g+Ph6W  
* @author treeroot h1%y:[_  
* @since 2006-2-2 ?\yB)Nd y  
* @version 1.0 \!X?zR_  
*/ j3 P RAe  
public class MergeSort implements SortUtil.Sort{ Rx. rj~  
wd`R4CKhP]  
/* (non-Javadoc) %^^h) Wy}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rr>~WjZ3  
*/ S.fXHtSx  
public void sort(int[] data) { ti;%BS  
int[] temp=new int[data.length]; _XN~@5elrC  
mergeSort(data,temp,0,data.length-1); F|]rA*2u  
} 9c5!\m1  
oBUh]sR{.  
private void mergeSort(int[] data,int[] temp,int l,int r){ &8Wlps`  
int mid=(l+r)/2; ]b\WaS8I  
if(l==r) return ; Rk[8Bd?  
mergeSort(data,temp,l,mid); CB@B.)E  
mergeSort(data,temp,mid+1,r); |,fh)vO  
for(int i=l;i<=r;i++){ By/bVZks  
temp=data; Pt3[|4L  
} `Wwh`]#"~d  
int i1=l; 3GWrn ,f  
int i2=mid+1; u@"o[e':  
for(int cur=l;cur<=r;cur++){ ty;o&w$  
if(i1==mid+1) aT/KT,!  
data[cur]=temp[i2++];  ,(hY%M&\  
else if(i2>r) KS>Fl->  
data[cur]=temp[i1++]; 2wOy}:  
else if(temp[i1] data[cur]=temp[i1++]; I;iR(Hf)?q  
else lWl-@ *'  
data[cur]=temp[i2++]; w})NmaT;YF  
} `hF;$  
} g Np-f  
\R;K>c7=  
} @5*xw1B  
w2<*$~C]  
改进后的归并排序: 4O Zy&,  
&x/k^p=  
package org.rut.util.algorithm.support; Y=WR6!{  
gx&73f<J  
import org.rut.util.algorithm.SortUtil; #y`k$20"  
e6es0D[>5  
/** - coy@S=.'  
* @author treeroot ]*h&hsS 0  
* @since 2006-2-2 |x[$3R1@  
* @version 1.0 r2)pAiTM*  
*/  bn|DRy  
public class ImprovedMergeSort implements SortUtil.Sort { A@ { !:_55  
][ N) 2_^M  
private static final int THRESHOLD = 10; /op/g]O}  
RQJ9MG w  
/* .hnF]_QQ  
* (non-Javadoc) .kzms  
* 9w$7VW;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ty iU1,oO  
*/ [EcV\.  
public void sort(int[] data) { 4}PeP^pj  
int[] temp=new int[data.length]; K+t];(  
mergeSort(data,temp,0,data.length-1); 0 wYiu  
} n%8#?GC`  
)muv;Rf`e5  
private void mergeSort(int[] data, int[] temp, int l, int r) { vD"_X"v  
int i, j, k; nvwDx*[qN  
int mid = (l + r) / 2; J4&XPr9  
if (l == r) 8Y]}Gb!  
return; BfEx'C  
if ((mid - l) >= THRESHOLD) k4* ! Q_A  
mergeSort(data, temp, l, mid); v,@E}F~-f1  
else zh hGqz[K  
insertSort(data, l, mid - l + 1); hG[4O3jo\  
if ((r - mid) > THRESHOLD) f#2#g%x  
mergeSort(data, temp, mid + 1, r); /TG| B Eb  
else  2w;G4  
insertSort(data, mid + 1, r - mid); gtl;P_  
aSxG|OkKy  
for (i = l; i <= mid; i++) { Ny[s+2?  
temp = data; "Vq@bNtu+  
} k.h^ $f  
for (j = 1; j <= r - mid; j++) { olslzXn7o  
temp[r - j + 1] = data[j + mid]; +&zb^C`J  
} !c v6 #:  
int a = temp[l]; lP-kZA!  
int b = temp[r]; orK+B4  
for (i = l, j = r, k = l; k <= r; k++) { SSo~.)J  
if (a < b) { xBt4~q;#sE  
data[k] = temp[i++]; xg4T` ])  
a = temp; }$&);7(w  
} else { [cY?!Qd 0  
data[k] = temp[j--]; +,:nm_kQU  
b = temp[j]; W=!F8g|Qz  
} W=(MsuirO  
} ~m3V]v(q7  
} @ICejB<  
=k_XKxd  
/** 23,%=U  
* @param data 1@s^$fvW  
* @param l y`T--v3mI  
* @param i Y|Nfwqz  
*/ a'o}u,e5  
private void insertSort(int[] data, int start, int len) { ,OFq'}q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /"g[Ay  
} 4/ 0/#G#j  
} +YkmLD  
} v_[)FN"]Y.  
} F?!};~$=Z  
fB@K'JQG  
堆排序: $a)J CErN  
hG< a  
package org.rut.util.algorithm.support; :K!GR  
(0Zrfu^  
import org.rut.util.algorithm.SortUtil; `,hW;p>-  
5>0\e_V  
/** 0]/,m4a#n  
* @author treeroot 0#2T0zk  
* @since 2006-2-2 xop-f#U*  
* @version 1.0 BvNl?A@]A  
*/ v[p/c.p?i  
public class HeapSort implements SortUtil.Sort{ {-:4O\/  
wi![0IE )  
/* (non-Javadoc) ~Tpe,juG_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &zaW"uy3T  
*/ o9DYr[  
public void sort(int[] data) { ~pDRF(  
MaxHeap h=new MaxHeap(); m1M;'tT@  
h.init(data); u-]vK  
for(int i=0;i h.remove(); g!~-^_F  
System.arraycopy(h.queue,1,data,0,data.length); $4#=#aKW.  
} <yPq;#z(!  
- I1cAt  
private static class MaxHeap{ 5e~ j  
v3=&{}+j.  
void init(int[] data){ ?HEo9/ *7  
this.queue=new int[data.length+1]; #VP-T; Ahe  
for(int i=0;i queue[++size]=data; -k|g04Q?  
fixUp(size); QE`:jxyad  
} ~ 4p]E'b  
} V NJDl  
Rh05W_?Js  
private int size=0; 2^k^"<h5j  
Dohl,d  
private int[] queue; jpPdjQ  
oho AUT  
public int get() { ZEXj|wC  
return queue[1]; +8?R+0P  
} o`JlXuG?o  
vfk7J5y  
public void remove() { ?Oe_} jv;  
SortUtil.swap(queue,1,size--); ~jgN_jz  
fixDown(1); T<9dW?'|  
} kHz+ ZY<?  
file://fixdown A>ug'.  
private void fixDown(int k) { XSL t;zL:  
int j; +S:u[x  
while ((j = k << 1) <= size) { dvrvpDoE.  
if (j < size %26amp;%26amp; queue[j] j++; 5Xq.=/eX  
if (queue[k]>queue[j]) file://不用交换 8k*  
break; hSLwiX~  
SortUtil.swap(queue,j,k); P?yOLG+)l)  
k = j; WsK"^"Z  
} @[[C s*-  
} |zRoXO`]-*  
private void fixUp(int k) { h>mBkJ {  
while (k > 1) { 7><* 9iOW  
int j = k >> 1; r7wx?{~ 28  
if (queue[j]>queue[k]) wXIe5  
break; 2s]]!{Z#  
SortUtil.swap(queue,j,k); f0HV*%8  
k = j; 3f7t%  
} }tl8(kjm  
} KNUMz4  
\M3NasZ  
} /4f 5s#hR  
pRDON)$  
} leX7(Y;!a7  
GakmROZ@9  
SortUtil: qQ?,|4)y  
*BP\6"X  
package org.rut.util.algorithm; 1z $}*`  
u\Erta`  
import org.rut.util.algorithm.support.BubbleSort; Fc{6*wtO  
import org.rut.util.algorithm.support.HeapSort; [/#k$-  
import org.rut.util.algorithm.support.ImprovedMergeSort; {TcbCjyw  
import org.rut.util.algorithm.support.ImprovedQuickSort; $.x?in|_  
import org.rut.util.algorithm.support.InsertSort; PL$(/Z  
import org.rut.util.algorithm.support.MergeSort; !m/Dd0  
import org.rut.util.algorithm.support.QuickSort; v2W"+QS}u  
import org.rut.util.algorithm.support.SelectionSort; Ej{eq^n  
import org.rut.util.algorithm.support.ShellSort; %+j]vP  
$'I$n  
/** 41f m}  
* @author treeroot (VF4FC  
* @since 2006-2-2 V~gUMu4ot  
* @version 1.0 ZF11v(n  
*/ #k|g9`  
public class SortUtil { }IalgQ(i  
public final static int INSERT = 1; \Im \*A   
public final static int BUBBLE = 2; fv 1!^CDia  
public final static int SELECTION = 3; +oKpA\mz  
public final static int SHELL = 4; VEdnP+D  
public final static int QUICK = 5; ovBd%wJ 0  
public final static int IMPROVED_QUICK = 6; Nf?, _Rl  
public final static int MERGE = 7; VdN+~+A:  
public final static int IMPROVED_MERGE = 8; T\b";+!W  
public final static int HEAP = 9; ?T%K +  
+ke42Jwt  
public static void sort(int[] data) { =ty@xHr  
sort(data, IMPROVED_QUICK); M$5%QM}  
} lLwQridFXh  
private static String[] name={ \`iW__  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" r+W 8m?oi  
}; 9rvxp;  
KohQ6q  
private static Sort[] impl=new Sort[]{ *"9)a6T t+  
new InsertSort(), jP7+s.j>  
new BubbleSort(), %imBGh  
new SelectionSort(), S|5lx7  
new ShellSort(), HDae_.  
new QuickSort(), .WPR}v,.Z  
new ImprovedQuickSort(), kl{OO%jZ  
new MergeSort(), `b'|FKc]  
new ImprovedMergeSort(), Q17o5##x7  
new HeapSort() W;AWO0+  
}; Q!A3hr$IF  
'frL/[S  
public static String toString(int algorithm){ p/^\(/\])  
return name[algorithm-1]; FOnA;5Aa  
} 2 DNzC7}e  
HZQ3Ht3Vh  
public static void sort(int[] data, int algorithm) { @ 6VH%  
impl[algorithm-1].sort(data); x) qHeS  
} \5pAG mgD  
iJj?~\zp  
public static interface Sort { i(cb&;Xx:A  
public void sort(int[] data); V;+$/>J`vB  
} `F`'b)  
Vh[o[ U  
public static void swap(int[] data, int i, int j) { y2hFUq  
int temp = data; hq[ gj?P  
data = data[j]; nJ0eZBgB]  
data[j] = temp; z o))x(  
} QRG)~  
} GWE0 UO}  
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