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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。 p *GAs C  
插入排序: pcPRkYT[ M  
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package org.rut.util.algorithm.support; wy?Hp*E  
@gihIysf  
import org.rut.util.algorithm.SortUtil; (:|1h@K/R  
/** "oT]_WHqo  
* @author treeroot lsB.>NlU  
* @since 2006-2-2 PF: E{_~  
* @version 1.0 :6}cczQE|O  
*/ ^tl&FWF  
public class InsertSort implements SortUtil.Sort{ 1:Xg&4s  
!4mAZF b  
/* (non-Javadoc) bE2{^5iG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A9M/n^61  
*/ RJLhR_t7n  
public void sort(int[] data) { jN2Xoh9  
int temp; ()yOK$"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <"x *ZT  
} Owm2/  
} +c\uBrlZQ;  
} YPS,[F'B.  
8YkCTJfBGu  
} #5_pE1  
mJS-x-@  
冒泡排序: <W88;d33r=  
$EPDa?$*  
package org.rut.util.algorithm.support; kud2O>>  
&A~(9IV  
import org.rut.util.algorithm.SortUtil; -(|}:J  
t 2&}  
/** + )*aS+  
* @author treeroot hV"2L4/E  
* @since 2006-2-2 X*rB`M7,  
* @version 1.0 dsA::jR0P6  
*/ <F+9#-  
public class BubbleSort implements SortUtil.Sort{ =lS@nRH  
T1fX[R ^\  
/* (non-Javadoc) \h7XdmA]~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O]\eMM&  
*/ 60%EmX ;  
public void sort(int[] data) { /n#t.XJY*  
int temp; K]dX5vJw'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ jp+#N pH  
if(data[j] SortUtil.swap(data,j,j-1);  `/eh  
} K<7 Db4H  
} rYk   
} uCGn9]  
} jX 6+~  
q<?r5H5  
} T!gq Z  
^HNccr  
选择排序: 0vdnM8N2  
*Y- rEF>  
package org.rut.util.algorithm.support; gBXJ/BW$y  
'2c4 4F)i  
import org.rut.util.algorithm.SortUtil; Wx-rW  
,ikn%l#cm  
/** /BfCh(B  
* @author treeroot ~n!7 ?4%U  
* @since 2006-2-2 !8Q9RnGn  
* @version 1.0 (1?k_!)T  
*/ CiC@Z,ud`  
public class SelectionSort implements SortUtil.Sort { ,v*<yz/  
ED R*1!d  
/* d)jX%Z$LC  
* (non-Javadoc) o$bD?Zn  
* dG'5: ,n/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aFwfF^\(|,  
*/ h OF>Dj  
public void sort(int[] data) { Y%]&h#F  
int temp; Cr%6c3aQ  
for (int i = 0; i < data.length; i++) { Nyo,6 AA  
int lowIndex = i; &1,qC,:!  
for (int j = data.length - 1; j > i; j--) { AJ-~F>gn  
if (data[j] < data[lowIndex]) { <D{_q.`vA  
lowIndex = j; +G>;NiP_  
} Gzu $  
} KoO\<_@";  
SortUtil.swap(data,i,lowIndex); 3?oj46gP  
} XW9 [VUW~  
} y5 bELWA  
RBM4_L  
} Bc2PF;n  
*`.4M)Ym~  
Shell排序: .6#Y- iJqc  
7q,M2v;  
package org.rut.util.algorithm.support; ,c'a+NQ_t  
](H vx  
import org.rut.util.algorithm.SortUtil; B%d2tsDw  
7U{g'<  
/** [!E~pW%|n  
* @author treeroot ;yK:.Vg  
* @since 2006-2-2 >VWH bo  
* @version 1.0 "Crm\UI6  
*/ _fQBXG2  
public class ShellSort implements SortUtil.Sort{ /4n:!6rt  
k,nRC~Irh  
/* (non-Javadoc) H Ql_ /:Wx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =1Mh %/y  
*/ Dx<CO1%z-  
public void sort(int[] data) { )q+9_KU q  
for(int i=data.length/2;i>2;i/=2){ bbO1`b-  
for(int j=0;j insertSort(data,j,i); d^.fB+)A3  
} u2xb^vu  
} /^z5;aG  
insertSort(data,0,1); lj!f\C}d  
} kf<5`8  
<C9_5C e~  
/** *@,>R6)jI  
* @param data QeA)@x.p  
* @param j e_+`%A+-  
* @param i z12[vN  
*/ =iRi 9r'l  
private void insertSort(int[] data, int start, int inc) { !Y-MUZ$f  
int temp; =YBwO. !%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xTX\% s|  
} !%NxSJ  
} g*ES[JJH&  
} rd\mFz-SB  
R:B-4  
} 9u1)Kr=e  
n<Z;Xh~F  
快速排序: jK\2y|&&c  
Ly\$?3 h  
package org.rut.util.algorithm.support; 4pkc9\  
x2/|i? ZO  
import org.rut.util.algorithm.SortUtil; TclZdk]%T  
[+gX6  
/** ~*Ve>4  
* @author treeroot |A 7Yv  
* @since 2006-2-2 9M~EH?>+[  
* @version 1.0 OCo=h|qBp  
*/ W<yh{u&,  
public class QuickSort implements SortUtil.Sort{ R+gh 2 6e  
k\Oy\z@  
/* (non-Javadoc) '/b,3:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b.h~QyI/W  
*/ jN 5Hku[?  
public void sort(int[] data) { kJ>l, AD/  
quickSort(data,0,data.length-1); *f.eyg#  
} q>r9ooN  
private void quickSort(int[] data,int i,int j){ \ Yz>=rY  
int pivotIndex=(i+j)/2; ?;+=bKw0  
file://swap O9A.WSJ >}  
SortUtil.swap(data,pivotIndex,j); -a]oN:ERb  
R8Lp8!F'  
int k=partition(data,i-1,j,data[j]); )#T(2A  
SortUtil.swap(data,k,j); KI-E=<zt  
if((k-i)>1) quickSort(data,i,k-1); e<l Wel  
if((j-k)>1) quickSort(data,k+1,j); ;Y j_@=   
U{h5uezD  
} gx4`pH;B\  
/** #; E,>0  
* @param data 0^]E-Zf  
* @param i ! s?vj <  
* @param j wz9V)_V*  
* @return x<P$$G/  
*/ WY?(C@>s  
private int partition(int[] data, int l, int r,int pivot) { f<uLbJ6  
do{ K`j#'`/KC  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~{*FjZ`h  
SortUtil.swap(data,l,r); engql;  
} 0D/j2cT("k  
while(l SortUtil.swap(data,l,r); X;v/$=-mz  
return l; 6fY(u7m|p  
} @&S4j]rq  
%$Wt"~WE"O  
} st|$Fu  
O%tlj@?  
改进后的快速排序: _|wgw^.LJ]  
q3VE\&*^F  
package org.rut.util.algorithm.support; (".`#909  
"\vEi &C  
import org.rut.util.algorithm.SortUtil; .O3i"X]  
D+LeZBJ  
/** &rorBD 5aj  
* @author treeroot l\ts!p4f$  
* @since 2006-2-2 }v;@1[.B  
* @version 1.0 C=h$8Q  
*/ 8PDt 7 \  
public class ImprovedQuickSort implements SortUtil.Sort { z\oq b) a  
)2g\GRg6  
private static int MAX_STACK_SIZE=4096; {uL<$;#i  
private static int THRESHOLD=10; Ii,e=RG>  
/* (non-Javadoc) FaPX[{_E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?2 u_E "  
*/ z=N'evx~  
public void sort(int[] data) { zn_InxR  
int[] stack=new int[MAX_STACK_SIZE]; & *B@qQ  
f:B+R  
int top=-1; eq<xO28z  
int pivot; c`#E#  
int pivotIndex,l,r; c;&m}ImLe.  
b DeHU$  
stack[++top]=0; gkI(B2,/  
stack[++top]=data.length-1; ]chcRc[!  
I+!w9o2nZ  
while(top>0){ @r%[e1.  
int j=stack[top--]; >O&(G0!N+}  
int i=stack[top--]; ^Gq4Yr  
5H6m{ng  
pivotIndex=(i+j)/2; =IkQ;L&  
pivot=data[pivotIndex]; `5r*4N<  
T8GxoNm  
SortUtil.swap(data,pivotIndex,j); 4+:Q"  
E=Ah_zKU  
file://partition e=o<yf9>Q  
l=i-1; MQ$[jOAqP  
r=j; ua/A &XQx  
do{ Y 1rU  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6^H64jM  
SortUtil.swap(data,l,r); NN\% X3ri"  
} (Q o  
while(l SortUtil.swap(data,l,r); D(Pd?iQIO  
SortUtil.swap(data,l,j); MG*#-<OV.  
^+F@KXn L  
if((l-i)>THRESHOLD){ <K=:_  
stack[++top]=i; L~"~C(g  
stack[++top]=l-1; 0vbn!<:  
} SZpBbX$  
if((j-l)>THRESHOLD){ Pz,kSxe=  
stack[++top]=l+1; =<YG0K  
stack[++top]=j; 2o] V q  
} .>zXz%p  
cWl  
} B# |w}hj  
file://new InsertSort().sort(data); H1yl88K  
insertSort(data); Fx0E4\-  
} M n`gd#  
/** &{!FE`ZC_  
* @param data sTP`xaY  
*/ Wrf('  
private void insertSort(int[] data) { KqG:o+V=  
int temp; J/>Y mi,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jmxjiJKP  
} btkD<1{g  
} E y1mlW  
} 1&ukKy,[  
g>12!2}  
} #(j'?|2o%  
|>5NH'agV  
归并排序: c/DB"_}!a  
0.'$U}#b  
package org.rut.util.algorithm.support; z2vrV?:  
OIGu`%~js  
import org.rut.util.algorithm.SortUtil; -GLI$_lLF  
n2zJ'  
/** 26B]b{Iz{  
* @author treeroot gXZC%S  
* @since 2006-2-2 dT4?8:  
* @version 1.0 W=|sy-N{2  
*/ m Y*JNx  
public class MergeSort implements SortUtil.Sort{ _<yGen-  
tV%:sk^d  
/* (non-Javadoc) 5 < wIJ5t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1//d68*"  
*/ &m&Z^CA  
public void sort(int[] data) { `wj<d>m  
int[] temp=new int[data.length]; KC9_H>  
mergeSort(data,temp,0,data.length-1); %JeT,{  
} ekND>Qjj  
8iaP(*J  
private void mergeSort(int[] data,int[] temp,int l,int r){ rz+)z:u  
int mid=(l+r)/2; l tE`  
if(l==r) return ; JWoNP/v6  
mergeSort(data,temp,l,mid); ;9PJ K5>~  
mergeSort(data,temp,mid+1,r); 62TWqQ!9d  
for(int i=l;i<=r;i++){ rJH u~/_Dq  
temp=data; 2kzm(K  
} lK;|ciq"c7  
int i1=l; 89e<,f`h  
int i2=mid+1; -L%tiz`_  
for(int cur=l;cur<=r;cur++){ 3qwi)nm  
if(i1==mid+1) w/BaaF.0  
data[cur]=temp[i2++]; _^]2??V  
else if(i2>r) -7,xjn  
data[cur]=temp[i1++]; ;*>Y8^K&Q  
else if(temp[i1] data[cur]=temp[i1++]; i%w[v_j  
else j;6kN-jx  
data[cur]=temp[i2++]; M6 l S2  
} {_T?0L  
} Teh _  
0aj4.H*%  
} gg $/  
TR}ztf[e  
改进后的归并排序: mucKmb/  
[hC-} 9  
package org.rut.util.algorithm.support; =kFZ2/P2t(  
u}Kc>/AF  
import org.rut.util.algorithm.SortUtil;  #~QkS_  
xc{$=>'G  
/** m%au* 0p  
* @author treeroot "=8= G  
* @since 2006-2-2 uflRW+-2  
* @version 1.0 Mtxn@m{i;"  
*/ }8tD|t[  
public class ImprovedMergeSort implements SortUtil.Sort { a^/j&9  
3"afrA  
private static final int THRESHOLD = 10; d h5%  
/`$9H|  
/* q$IgkL  
* (non-Javadoc) Jd#g"a>zZ  
* zv/owK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x[L/d"Wf  
*/ >F7v'-*{  
public void sort(int[] data) { vU|=" #  
int[] temp=new int[data.length]; |hGi8  
mergeSort(data,temp,0,data.length-1); y/{&mo1\  
} <uq#smY  
wP:ab  
private void mergeSort(int[] data, int[] temp, int l, int r) { BO]}E:C9  
int i, j, k; e+416 ~X v  
int mid = (l + r) / 2; X'[93 C|K  
if (l == r) sX_6qKUH  
return; a(cZ]`s]*  
if ((mid - l) >= THRESHOLD) JSO'. [N  
mergeSort(data, temp, l, mid); (rFXzCI  
else `wrN$&  
insertSort(data, l, mid - l + 1); +2X q+P  
if ((r - mid) > THRESHOLD) wP-BaB$_  
mergeSort(data, temp, mid + 1, r); =6Z$nc R  
else ]H[%PQ r`Z  
insertSort(data, mid + 1, r - mid); :x*#RnRr.  
U42B( ow  
for (i = l; i <= mid; i++) { ? }t[  
temp = data; &4]~s:F  
} #i6ZY^+ee  
for (j = 1; j <= r - mid; j++) { Iq/V[v  
temp[r - j + 1] = data[j + mid]; Owt|vceT  
} zNg8Oq&  
int a = temp[l]; 67,@*cK3?J  
int b = temp[r]; `]*BDSvE  
for (i = l, j = r, k = l; k <= r; k++) { 7l+>WB_]  
if (a < b) { %N.qu_,IZ  
data[k] = temp[i++]; +2&+Gh.h  
a = temp; +,wCV2>\3  
} else { uPZ<hG#K  
data[k] = temp[j--]; 78o>UWA:  
b = temp[j]; GJLe733o  
} `)Z+]5:  
} DMeP9D  
} ^j-w^)@T  
zI$24L9*  
/** &n 1 \^:  
* @param data $)(K7> P  
* @param l ItLP&S=  
* @param i LA\)B"{J  
*/ .LQvjK[N  
private void insertSort(int[] data, int start, int len) { @ckOLtxE>  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); e3YdHp  
} +#$(>6Zu"{  
} !/]vt?v#^  
} (j*1sk  
} . PAR  
4I %/}+Q  
堆排序: I[td:9+hK@  
uW@o,S0:  
package org.rut.util.algorithm.support; 6<%W 8m\  
e 9p+  
import org.rut.util.algorithm.SortUtil; t93iU?Z  
wfE%` 1  
/** Z{#;my*X|  
* @author treeroot QAI!/bB  
* @since 2006-2-2 vbn'CY]QU  
* @version 1.0 Gd= l{~  
*/ (txr%Z0E  
public class HeapSort implements SortUtil.Sort{ 9gS.G2  
B^{87YR  
/* (non-Javadoc) +0)zB;~7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F~qiNV  
*/ VlLc[eVV  
public void sort(int[] data) { !"dn!X  
MaxHeap h=new MaxHeap(); 9[L@*7A`m  
h.init(data); ?M02|8-  
for(int i=0;i h.remove(); UN,y /V  
System.arraycopy(h.queue,1,data,0,data.length); Xfq]vQ/{  
} ]n/fB|tE  
l>H G|ol  
private static class MaxHeap{ pN]$|#%q(  
@X\2K?c(v  
void init(int[] data){ T@. $Zpz  
this.queue=new int[data.length+1]; q1d'L *   
for(int i=0;i queue[++size]=data; o{QU?H5h  
fixUp(size); Ku W$  
} `/1Zy}cD  
} ^KK9T5H  
8N58w)%7`  
private int size=0; xUG:x4Gz+  
4h[S`;D0Vf  
private int[] queue; RR 8Z 9D;  
Nvef+L,v  
public int get() { 4_A9o9&_Rh  
return queue[1]; `6t3D&.u0  
} 1|PmZPKq9n  
#h#Bcv0 Z  
public void remove() { %s#`i$|z*n  
SortUtil.swap(queue,1,size--); >Za66<:  
fixDown(1); qL\*rYe<  
} GA8cA)]zOD  
file://fixdown Ul EP;  
private void fixDown(int k) { &dC #nw  
int j; @3 UVl^T  
while ((j = k << 1) <= size) { =XT'D@q~W  
if (j < size %26amp;%26amp; queue[j] j++; wu2AhMGmw  
if (queue[k]>queue[j]) file://不用交换 h/CF^0m"!  
break; $_.m<  
SortUtil.swap(queue,j,k); gUrb&#\X  
k = j; TF@HwF"#  
} i"rrM1/r  
} 0M?nXHA[  
private void fixUp(int k) { BBg&ZIYEh  
while (k > 1) { u D.E>.B  
int j = k >> 1; K 7x,>  
if (queue[j]>queue[k]) 7 %P?3  
break; x%;Q /7&$  
SortUtil.swap(queue,j,k); cZ" Ut  
k = j; ;5*)kX  
} `P`n qn  
} GM/3*S$c  
>e4  
} ]Mh7;&<6[  
!n`ogzOh  
} 1m/=MET]  
o3;u*f0rWn  
SortUtil: zr0_SCh;2  
))n7.pB9/  
package org.rut.util.algorithm; r: _- Cj  
?-FSDNQ  
import org.rut.util.algorithm.support.BubbleSort; ;z9(  
import org.rut.util.algorithm.support.HeapSort; zS:89y<  
import org.rut.util.algorithm.support.ImprovedMergeSort; "9[K  
import org.rut.util.algorithm.support.ImprovedQuickSort; /~_Cb= 7  
import org.rut.util.algorithm.support.InsertSort; f77uqv(Y  
import org.rut.util.algorithm.support.MergeSort; VA _O0y2  
import org.rut.util.algorithm.support.QuickSort; cJ&e^$:Er  
import org.rut.util.algorithm.support.SelectionSort; Zq|oj^  
import org.rut.util.algorithm.support.ShellSort; JlsRP  
b; SFnZa8  
/** blZiz2F  
* @author treeroot 5 TD"  
* @since 2006-2-2 qYFol# =%  
* @version 1.0 3zb;q@JV  
*/ B{ NKDkDH  
public class SortUtil { 2#'[\*2|N  
public final static int INSERT = 1; #K7i<Bf  
public final static int BUBBLE = 2; Tk-PCra  
public final static int SELECTION = 3; {6<7M  
public final static int SHELL = 4; H ^Xw<Z=  
public final static int QUICK = 5; -A9 !Y{Z  
public final static int IMPROVED_QUICK = 6; }>xgzhdT  
public final static int MERGE = 7; n@BE*I<"  
public final static int IMPROVED_MERGE = 8; )2oWoZ vi9  
public final static int HEAP = 9; T\:3(+uK  
tc@U_>{  
public static void sort(int[] data) { pFSVSSQRV|  
sort(data, IMPROVED_QUICK); w\;=3C`  
} 0$,Ag;"^?  
private static String[] name={ #;H,`r  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" +byw*Kk  
}; %H- [u}s  
n/s!S &  
private static Sort[] impl=new Sort[]{ 'N5qX>Ob  
new InsertSort(),  | qHWM  
new BubbleSort(), 8N6a=[fv<  
new SelectionSort(), h^>kjMM  
new ShellSort(), nl5K1!1  
new QuickSort(), |1 is!leP  
new ImprovedQuickSort(), ;FZ\PxN  
new MergeSort(), m[oe$yH  
new ImprovedMergeSort(), dqUhp_f2qK  
new HeapSort() *^c4q|G.-  
}; @D"#B@j  
$EviGZFAaR  
public static String toString(int algorithm){ X@9_ukdpu  
return name[algorithm-1]; }#<Sq57n  
} z}C#+VhQ`  
I2j;9Qcz  
public static void sort(int[] data, int algorithm) { 2t[c^J  
impl[algorithm-1].sort(data); u{H,i(mx?  
} U]hQ#a+  
9z'</tJ`  
public static interface Sort { rxa"ji!)  
public void sort(int[] data); bq[Q  
} 83i%3[L  
T,7Y7MzF  
public static void swap(int[] data, int i, int j) { bHS2;K~  
int temp = data; mu"]B]  
data = data[j]; IH~H6US  
data[j] = temp;  h *%T2  
} ;\<?LTp/r  
} lBG* P>;  
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