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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。 +mu.W r  
插入排序: 5u5-:#sLy  
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package org.rut.util.algorithm.support; b7uxCH]Z  
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import org.rut.util.algorithm.SortUtil; tZL|;K  
/** (=\))t8J  
* @author treeroot 4lp9 0sa  
* @since 2006-2-2 a62'\wF>D  
* @version 1.0 " J4?Sb<  
*/ /s~(? =qYH  
public class InsertSort implements SortUtil.Sort{ uUIjntSF(  
/l%+l@  
/* (non-Javadoc) E[=# Rw!*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +|K/*VVn`  
*/ N{}o*K  
public void sort(int[] data) {  8MZ:=  
int temp; dEu\}y|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8V?*Bz-4`  
} ~@ H9h<T  
} NScUlR"nE  
} xRrKrs&eE  
6Zx'$F.iqK  
} -s_=4U,  
UCBx?9O/0  
冒泡排序: 8ioxb`U  
o4qB0h  
package org.rut.util.algorithm.support; O<\h_   
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import org.rut.util.algorithm.SortUtil; yyv<MSU8  
^@-qnU lH  
/** i}_d&.DbF  
* @author treeroot 6xW17P  
* @since 2006-2-2 ~E3"s  
* @version 1.0 oFDJwOJ'Bj  
*/ OlcWptM$  
public class BubbleSort implements SortUtil.Sort{ |Qz"Z<sNYw  
JPmZ%]wA  
/* (non-Javadoc) r34 GO1d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eCy]ugsi%  
*/ j=V2~ xA6  
public void sort(int[] data) { 9oA-Swc[  
int temp; FX&)~)  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y}hz UKJ  
if(data[j] SortUtil.swap(data,j,j-1); `XK+Y  
} $[HpY)MSRw  
} NB .&J7v  
} ;_D5]kl`  
} *OR(8;  
kT ,2eel  
} Jh`6@d  
| X0Ys8f  
选择排序: 'k!V!wcD^y  
Yvxp(  
package org.rut.util.algorithm.support; 3@^b's'S|}  
^#,cWG}z  
import org.rut.util.algorithm.SortUtil; E?^A+)<"  
]M.)N.T  
/** pNzpT!}H>  
* @author treeroot *+>R^\uT  
* @since 2006-2-2 O\[Td  
* @version 1.0 r/B iR0$E  
*/ 7).zed^  
public class SelectionSort implements SortUtil.Sort { zP;1mN  
Ykt(%2L  
/* ]J6+nA6)  
* (non-Javadoc) "Qxn}$6-  
* G)wIxm$?0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2z=GKV  
*/ D[iIj_CKQ  
public void sort(int[] data) { H=k`7YN  
int temp; (!&g (l;  
for (int i = 0; i < data.length; i++) { KqT~MPl  
int lowIndex = i; S&m5]h!D  
for (int j = data.length - 1; j > i; j--) { D $[/|%3  
if (data[j] < data[lowIndex]) { `%M} :T  
lowIndex = j; q'p>__Ox  
} ^Wz3 q-^  
} `L<)9*  
SortUtil.swap(data,i,lowIndex); ,9;d"ce  
} rO`n S<G  
} 3((53@s98  
DLrG-C33  
} 8!AMRE  
Pf]O'G&F  
Shell排序: sP NAG  
dLek4q `l  
package org.rut.util.algorithm.support; A*:(%!  
^D0BGC&&  
import org.rut.util.algorithm.SortUtil; b!' bu  
8@a|~\3-  
/** /@bLc1"  
* @author treeroot ;Q.g[[J/p  
* @since 2006-2-2 C4P7,  
* @version 1.0 [+st?;"GF  
*/ f-tV8  
public class ShellSort implements SortUtil.Sort{ \'L6m1UZ%  
`|^<y.-6  
/* (non-Javadoc) PHa#;6!5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uGQCW\!"4  
*/ 'c<@SVF{Zz  
public void sort(int[] data) { g/q$;cB  
for(int i=data.length/2;i>2;i/=2){ }m<)$.x|P  
for(int j=0;j insertSort(data,j,i); b+M[DwPw  
} 1*x4T%RF$  
} >P=xzg79  
insertSort(data,0,1); wz!]]EQ!o  
} [VPqI~u5)  
=P+S]<O  
/** *3<m<<>U  
* @param data % KY&E>^  
* @param j t@/r1u|iq  
* @param i ):+H`Hcm  
*/ r`cCHZo/V  
private void insertSort(int[] data, int start, int inc) { fXw%2wg  
int temp; nu$LWC-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7@DinA!  
} i*Y/q-N|  
} .@APxeU  
} 2+GF:[$  
xsFWF*HPs  
} EW4XFP4 c  
(U`7[F  
快速排序: zPV/{)S  
$Y,]D*|"K  
package org.rut.util.algorithm.support; X2i<2N*@  
F;ONo.v;  
import org.rut.util.algorithm.SortUtil; <$D)uY K  
8XJ%Yuu  
/** BJj~fNm1Zr  
* @author treeroot ~.x!st}  
* @since 2006-2-2 ~:)$~g7>b  
* @version 1.0 ;5Sr<W\:;  
*/ J*U(f{Q(  
public class QuickSort implements SortUtil.Sort{ jSYj+k  
j9u-C/Q\r  
/* (non-Javadoc) &`TX4b^/!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yJp& A  
*/ //+UQgl6  
public void sort(int[] data) { $e*Nr=/  
quickSort(data,0,data.length-1); 0KDDAkR5R  
} bY>o%LL-  
private void quickSort(int[] data,int i,int j){ 2tr2:PB`  
int pivotIndex=(i+j)/2; *q0N$}k  
file://swap `P z !H  
SortUtil.swap(data,pivotIndex,j); >leOyBEAR  
,OasT!Sr  
int k=partition(data,i-1,j,data[j]); `a6;*r y  
SortUtil.swap(data,k,j); 2hu6  
if((k-i)>1) quickSort(data,i,k-1); mtOrb9` m  
if((j-k)>1) quickSort(data,k+1,j); ;OKQP~^iH2  
MW$9,[  
} P! O#"(r2]  
/** yQx>h6  
* @param data GS{9MGl  
* @param i ~b7Nzzfo  
* @param j 7CIje=u.q  
* @return e+6~JbMV  
*/ Z?x]HB`r  
private int partition(int[] data, int l, int r,int pivot) { ?B}>[  
do{ MYx*W7X  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ka{IueSs  
SortUtil.swap(data,l,r); Yr31GJ}K  
} X! ]~]%K$y  
while(l SortUtil.swap(data,l,r); y1'/@A1  
return l; >'T%=50YH  
} 4YCGh  
~J2Q0Jv  
} 5Ci}w|c/>  
,\m c.80  
改进后的快速排序: PT4`1Oy}/1  
{e@1,19  
package org.rut.util.algorithm.support; )} #r"!  
+ mcN6/  
import org.rut.util.algorithm.SortUtil; _YJwF1e+M  
2<O8=I _  
/** Z kS* CG   
* @author treeroot &q U[ wn:1  
* @since 2006-2-2 hnZHu\EJ  
* @version 1.0 ]@P*&FRcZ  
*/ :d#NnR0^L  
public class ImprovedQuickSort implements SortUtil.Sort { 4Klfnki  
6:!fyia  
private static int MAX_STACK_SIZE=4096; lV 9q;!/1  
private static int THRESHOLD=10; QEgv,J{  
/* (non-Javadoc) xki"'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %;5hHRA  
*/ e>^R 8qM?  
public void sort(int[] data) { hJ<2bgQo  
int[] stack=new int[MAX_STACK_SIZE]; %FU[ j^  
B<R-|-#  
int top=-1; HA%ye"(y8  
int pivot; cTnbI4S;  
int pivotIndex,l,r; O,{ (  
x\DkS,O  
stack[++top]=0; Rv-o__C!  
stack[++top]=data.length-1; >+#[O"  
$ T4PC5.  
while(top>0){ -AT@M1K7%  
int j=stack[top--]; Vk (bU=w  
int i=stack[top--]; JdHc'WtS!|  
:t qjm:  
pivotIndex=(i+j)/2; D:(f"  
pivot=data[pivotIndex]; IMZKlU3  
_D9=-^  
SortUtil.swap(data,pivotIndex,j); 4.'EEuRw\}  
.;2!c'mT9  
file://partition *ls6#j@  
l=i-1; [f0HUbPX  
r=j; CnH R&`  
do{ qM0MSwvC=  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q UnFEg  
SortUtil.swap(data,l,r); !iVFzG @m  
} zmFFBf"<  
while(l SortUtil.swap(data,l,r); :RsPGj6   
SortUtil.swap(data,l,j); j,xPN=+hT  
Q*.FUV&;  
if((l-i)>THRESHOLD){ <k](s  
stack[++top]=i; Lf#G?]@  
stack[++top]=l-1; #P#R~b]  
} (NdgF+'=  
if((j-l)>THRESHOLD){ *fSM'q;  
stack[++top]=l+1; yk<jlVF$j  
stack[++top]=j; jtv Q<4  
} /8}+# h)[  
V|\A?   
} C|\^uR0  
file://new InsertSort().sort(data); ib \[ ~rg  
insertSort(data); hPz df*(8  
} 4i/q^;`  
/** >iH).:j  
* @param data 51qIo4$  
*/ _[i=TqVmf  
private void insertSort(int[] data) { /]zib@i  
int temp; I#t9aR+&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); df6&Nu;4L  
} {(}w4.!  
} SU O;  
} s2?,'es  
5 ?~-Vv31s  
} =jIT"rk  
sNfb %r  
归并排序: 8EG8!,\I  
ckN(`W,xp  
package org.rut.util.algorithm.support; tH,K\v`f  
rtL9c w5  
import org.rut.util.algorithm.SortUtil; UD<^r]'x  
~hz@9E]O  
/** 62)lf2$1  
* @author treeroot A Ok7G?Y  
* @since 2006-2-2 S~rVRC"<xo  
* @version 1.0 wYQ1Z  
*/ p (xD/E  
public class MergeSort implements SortUtil.Sort{ $qtU  
,}IER  
/* (non-Javadoc) 'RV\}gqZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3TiXYH  
*/ jaO#><f  
public void sort(int[] data) { "UoCT7X  
int[] temp=new int[data.length]; Wqs.oh  
mergeSort(data,temp,0,data.length-1); t6bWSz0  
} )_ b@~fC  
2gL[\/s  
private void mergeSort(int[] data,int[] temp,int l,int r){ $qlqW y-s  
int mid=(l+r)/2; E8iadf49  
if(l==r) return ; m>uI\OY{n  
mergeSort(data,temp,l,mid); _N,KHxsG8B  
mergeSort(data,temp,mid+1,r); U.pr} hq  
for(int i=l;i<=r;i++){ )1Ma~8Y%r  
temp=data; +wz`_i)!  
} KSgQ:_u4}  
int i1=l; 8 g# Y  
int i2=mid+1; +A'q#~yILa  
for(int cur=l;cur<=r;cur++){ |P.  =  
if(i1==mid+1) LTYu xZ  
data[cur]=temp[i2++]; vN0L( B  
else if(i2>r) U-~*5Dd  
data[cur]=temp[i1++]; J"D&q  
else if(temp[i1] data[cur]=temp[i1++]; 1(:b{Bl  
else ]*g ss'N  
data[cur]=temp[i2++]; ^b"x|8  
} SA`J.4yn  
} 8V=HyF#  
t7*G91Hoq&  
} 0{"dI;b%  
>uyeI&z  
改进后的归并排序:  u]1-h6  
sxN>+v11z  
package org.rut.util.algorithm.support; oz\{9Lwc  
|~/3u/  
import org.rut.util.algorithm.SortUtil; JO& ;bT<  
f*|8n$%   
/** (5Z8zNH`3  
* @author treeroot T.R>xd`9 "  
* @since 2006-2-2 I5TQ>WJbf  
* @version 1.0 VGTeuu5i  
*/ F,L82N6\U  
public class ImprovedMergeSort implements SortUtil.Sort { 45r]wT(C   
@H3s2|  
private static final int THRESHOLD = 10; ,yHzo  
:>tF_6  
/* &# vk4C_8m  
* (non-Javadoc) F1?CqN M  
* z^ aCQ3E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jpYw#]Q  
*/ Pg*?[^*  
public void sort(int[] data) { xVsa,EX b  
int[] temp=new int[data.length]; CU#L *kz  
mergeSort(data,temp,0,data.length-1); `G"|MM>P  
} sW]yuu!/  
U,%s;  
private void mergeSort(int[] data, int[] temp, int l, int r) { h"VpQhi  
int i, j, k; e/]O<,*  
int mid = (l + r) / 2; S\! a"0$  
if (l == r) ;-3h~k  
return; G?Qe"4 .  
if ((mid - l) >= THRESHOLD) N<L$gw+)$D  
mergeSort(data, temp, l, mid); lF; ziF  
else `YFkY^T  
insertSort(data, l, mid - l + 1); _9Dn \=g  
if ((r - mid) > THRESHOLD) ZfFIX5Qd\  
mergeSort(data, temp, mid + 1, r); -vv   
else O tXw/  
insertSort(data, mid + 1, r - mid); =gMaaGg p,  
) >>u|#@z  
for (i = l; i <= mid; i++) { [5]R?bQ0q{  
temp = data; th.M.jas  
} 2k.S[?)  
for (j = 1; j <= r - mid; j++) { rtB|N-  
temp[r - j + 1] = data[j + mid]; !pd7@FwC  
} gZw\*9Q9  
int a = temp[l]; uuI3NAi~  
int b = temp[r]; U -Af7qO  
for (i = l, j = r, k = l; k <= r; k++) { q6;OS.f  
if (a < b) { M*g2VyZ  
data[k] = temp[i++]; K%Usjezv&  
a = temp; L/qZ ;{  
} else { :@:g*w2K  
data[k] = temp[j--]; |RHO+J  
b = temp[j]; 68v xI|EZ  
} 3mpP| b"  
} C$KaT3I  
} 3M}AxE u  
!d:tIu{)  
/** Tx y]"_  
* @param data  K&j' c  
* @param l hWe}' L-  
* @param i k TFz_*6.  
*/ 1t0b Uf;(M  
private void insertSort(int[] data, int start, int len) { w0#% AK  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *Zc9yZl2  
} H"2U)HJl  
}  ]a78tTi  
} s ;48v  
} MNkKy(Za  
929#Q#TT  
堆排序: 0v;ve  
OZ eiH X!  
package org.rut.util.algorithm.support; 0Wa#lkn$I  
ri_P;#lz  
import org.rut.util.algorithm.SortUtil; 8r5xs-  
G=vN;e_$_b  
/** (&q@~ dJ  
* @author treeroot l#b:^3  
* @since 2006-2-2 |__d 8a  
* @version 1.0 j6`6+W=S(  
*/ 7}gA0fP9  
public class HeapSort implements SortUtil.Sort{ O\%j56Bf  
Q{O/xLf  
/* (non-Javadoc) X)I/%{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x]H3Y3  
*/ /#29Y^Z)=  
public void sort(int[] data) { 2K Pqu:lv  
MaxHeap h=new MaxHeap(); ^n t~-%  
h.init(data); c qv .dC  
for(int i=0;i h.remove(); $,!hD\a  
System.arraycopy(h.queue,1,data,0,data.length); nZe\5`  
} VcP:}a< B\  
R j-jAH  
private static class MaxHeap{ 4>l0V<  
E`~i-kf  
void init(int[] data){ S45'j(S=  
this.queue=new int[data.length+1]; dZF8 R  
for(int i=0;i queue[++size]=data; R;%^j=Q  
fixUp(size); S=4R5igrC  
} .-J`d=Krp  
} !TGr.R  
wI*Y{J  
private int size=0; *jGPGnSo  
r;9z 5'  
private int[] queue; 4AJ9`1d4  
.6LS+[  
public int get() { hRk,vB ]  
return queue[1]; 8*vFdoE_oO  
} iW'_R{)T  
f]c <9Q>*  
public void remove() { 7$K}qsr<  
SortUtil.swap(queue,1,size--); n7@j}Q(&?  
fixDown(1); <H!O:Mf_p  
} Bf/ |{@  
file://fixdown WBa /IM   
private void fixDown(int k) { :fhB*SYK  
int j; a`s/qi  
while ((j = k << 1) <= size) { R#D#{ cC(  
if (j < size %26amp;%26amp; queue[j] j++; 7O"hiDQ  
if (queue[k]>queue[j]) file://不用交换 &eU3(F`.  
break; W|0My0y  
SortUtil.swap(queue,j,k); ghX:"vV{n  
k = j; @bE~@4mOu  
} X`D+jiQ(f  
} 2!BsEvB(  
private void fixUp(int k) { =88t*dH(,"  
while (k > 1) { .izf#r:<  
int j = k >> 1; h>| g2h  
if (queue[j]>queue[k]) i]dz}=j'  
break; jK e.gA  
SortUtil.swap(queue,j,k); 1EQvcw #  
k = j; v:?o3 S  
} xuF5/(__  
} q P'[&h5Y  
q#jEv-j.  
} >GmN~"iJ  
0lBat_<8  
} d[S#Duz<&  
? -CV %l  
SortUtil: YroNpu]s  
s+'XQs^{aj  
package org.rut.util.algorithm; [1Uz_HY["3  
Qne0kB5m  
import org.rut.util.algorithm.support.BubbleSort; H@Q`  
import org.rut.util.algorithm.support.HeapSort; Hxn<(gd G  
import org.rut.util.algorithm.support.ImprovedMergeSort; z|Ap\[GS  
import org.rut.util.algorithm.support.ImprovedQuickSort; LZ4xfB (  
import org.rut.util.algorithm.support.InsertSort; `/0u{[  
import org.rut.util.algorithm.support.MergeSort; 4QO/ff[ o  
import org.rut.util.algorithm.support.QuickSort; SD^E7W$?  
import org.rut.util.algorithm.support.SelectionSort; JCNk\@0i*  
import org.rut.util.algorithm.support.ShellSort; e$ 32  
ifvU"l  
/** :6zC4Sr^  
* @author treeroot )d:K:YXt  
* @since 2006-2-2 8<{;=m8cQ  
* @version 1.0 XddHP;x  
*/ BKX 9 SL]  
public class SortUtil { Fe5jdV<  
public final static int INSERT = 1; %Lyz_2q A  
public final static int BUBBLE = 2; x~z_,':  
public final static int SELECTION = 3; -Uri|^t  
public final static int SHELL = 4; c_Tzyh7l4  
public final static int QUICK = 5; K\aAM;)-  
public final static int IMPROVED_QUICK = 6; Xo8DEr  
public final static int MERGE = 7; NocFvF7\  
public final static int IMPROVED_MERGE = 8; /K@$#x_{  
public final static int HEAP = 9; 3p&jLFphL  
`.[ 8$  
public static void sort(int[] data) { SY|Ez!tU:N  
sort(data, IMPROVED_QUICK); vtZ?X';wh  
} L1{T ?aII  
private static String[] name={ gApz:K[l  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [IMQIX  
}; YmgCl!r@  
ami09JHy  
private static Sort[] impl=new Sort[]{ .jargvAL*  
new InsertSort(), }PZ=`w*O  
new BubbleSort(), / gu3@@h  
new SelectionSort(), JhJLqb@q  
new ShellSort(), '?8Tx&}U8  
new QuickSort(), . ,R4WA,  
new ImprovedQuickSort(), \K}aQKB/j  
new MergeSort(), :u-.T.zZl  
new ImprovedMergeSort(), OXCQfT@\  
new HeapSort() cix36MR_  
}; R8 jovr  
PQ3h\CL1n  
public static String toString(int algorithm){ i-.c= M  
return name[algorithm-1]; mW +tV1XjG  
} F@EJtwLd5y  
*KJ7nRKx(w  
public static void sort(int[] data, int algorithm) { J=9#mOcg"  
impl[algorithm-1].sort(data); AerFgQiS  
} t%$@fjz  
!+KhFC&Py  
public static interface Sort { ,E9d\+j  
public void sort(int[] data); (tKMBxQo8  
} M _(2sq  
Up|f=@=  
public static void swap(int[] data, int i, int j) { GO~k '  
int temp = data; Q1T@oxV  
data = data[j]; A?,A( -0C  
data[j] = temp; |7c `(.  
} )5GQJiY  
} Q7(eq0na  
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