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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。 WJ":BK{NM  
插入排序: {@, } M  
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package org.rut.util.algorithm.support; 9c9F C  
BNns#Q8a  
import org.rut.util.algorithm.SortUtil; *W aL}i(P1  
/** GO0Spf_Gh  
* @author treeroot AT Dm$ *  
* @since 2006-2-2 U'(}emh}  
* @version 1.0 /)fx(u#  
*/ DID&fj9m  
public class InsertSort implements SortUtil.Sort{ x}o]R  
l}odW  
/* (non-Javadoc)  t9T3e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <{ !^  
*/ o8B_;4uB  
public void sort(int[] data) { 7xz~%xC.  
int temp; 9QE|p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #vh1QV!Ho  
} #!V [(/  
} D lz||==  
} :aHD'K  
'D#iT}Vu  
} eLE9-K+  
DE"KbA0}  
冒泡排序: EXn$ [K;  
Y8!T4dkn  
package org.rut.util.algorithm.support; L(tS]yWHw  
E/ %S0  
import org.rut.util.algorithm.SortUtil; tk3%0XZH  
y\0<f `v6  
/** rK&ofc]f$  
* @author treeroot $jMU| {  
* @since 2006-2-2 eBiP\  
* @version 1.0 l*]9   
*/ /LMb~Hy,  
public class BubbleSort implements SortUtil.Sort{ k<W n  
$mFsf)1]]?  
/* (non-Javadoc) Jg#L8>p1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 09?n5x!6  
*/ nTrfbK@  
public void sort(int[] data) { <q Z"W6&&  
int temp; Q|eRek  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $tvGS6p>  
if(data[j] SortUtil.swap(data,j,j-1); q@ !p  
} VesW7m*z  
} V lb L p;  
} Yc;cf% c1  
} T{=.mW^ x  
tMGkm8y-A  
} s '%KKC  
,Nl]rmI  
选择排序: aIaydu+\  
!R,9Pg*Ey  
package org.rut.util.algorithm.support; ?3 J  
A6w/X`([O  
import org.rut.util.algorithm.SortUtil; ~:7AHK2  
'G z>X :  
/** %-"?  
* @author treeroot AMqu}G  
* @since 2006-2-2 : sIZ+3  
* @version 1.0 3$f%{~3  
*/ INwc@XB  
public class SelectionSort implements SortUtil.Sort { cyUNJw  
( 8+_~_  
/* :H[E W3Q  
* (non-Javadoc) Ycb<'M*jE  
* TSu^.K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4f,D3e%T|  
*/ 4/D ~H+k  
public void sort(int[] data) { v8g3]MVj3  
int temp; Q"c!%`\  
for (int i = 0; i < data.length; i++) { g;en_~g3j  
int lowIndex = i; K]dqK'  
for (int j = data.length - 1; j > i; j--) { !v\m%t|.  
if (data[j] < data[lowIndex]) { $eQ_!7Gom$  
lowIndex = j; \phG$4(7+  
} ll;#4~iA  
} #|^7{TN   
SortUtil.swap(data,i,lowIndex); 5r/QPJ<h  
} qg#WDx /  
} Bv"Fx* {W  
QI>yi&t  
} QC>I<j& `!  
CaNZScnZ  
Shell排序: E&0A W{  
%Fb"&F^7  
package org.rut.util.algorithm.support; oQ!}@CaN|  
uF5d ]{Qt  
import org.rut.util.algorithm.SortUtil; 2^Gl;3  
;@K,>$ur-  
/** G[u_Uu=>  
* @author treeroot /1++ 8=  
* @since 2006-2-2 X?$Eb  
* @version 1.0 EVmQ"PKL'  
*/ %z! w- u+  
public class ShellSort implements SortUtil.Sort{ bj` cYL%  
]!H*oP8a*  
/* (non-Javadoc) , 6\i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >VP\@xt(R[  
*/ o*/\ oVOq  
public void sort(int[] data) { l ,)l"6OV  
for(int i=data.length/2;i>2;i/=2){ {B|U8j[  
for(int j=0;j insertSort(data,j,i); S4<@ji  
} j-$aa;  
} HCQv"i}-  
insertSort(data,0,1); 6,  ag\  
} <Xw 6m$fr:  
L.(T"`-i  
/** ^8)&~q*  
* @param data |w[}\#2  
* @param j R@>R@V>c  
* @param i ;nj'C1  
*/ ~bT0gIc  
private void insertSort(int[] data, int start, int inc) { [$?S9)Xd  
int temp; Sw#Ez-X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); x@.iDP@(  
} s9'g'O5  
} DMcvu*A  
} M4M 4*o  
9In&vF7$  
} *Q=-7a m  
6N.mSnp  
快速排序: 0]8+rWp|Nz  
/0SG  
package org.rut.util.algorithm.support; &{&lCBN  
a[s%2>e  
import org.rut.util.algorithm.SortUtil; 3]'=s>UO>^  
=YA%= d_  
/** SiojOH  
* @author treeroot 23+6u{   
* @since 2006-2-2 Tv3ZNh  
* @version 1.0 P?n!fA>!  
*/ 3D\.S j%  
public class QuickSort implements SortUtil.Sort{ ^'QcP5Fv  
oD{V_/pdx  
/* (non-Javadoc) A#1aO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f]T1:N*t  
*/ S,AZrgh,"X  
public void sort(int[] data) { $$ _ uQf  
quickSort(data,0,data.length-1); hl}#bZ8]  
} KtEM H  
private void quickSort(int[] data,int i,int j){ /G[y 24 Q  
int pivotIndex=(i+j)/2; \Qk:\aLR  
file://swap y(.WK8  
SortUtil.swap(data,pivotIndex,j); !nVX .m9  
IvIBf2D;Q  
int k=partition(data,i-1,j,data[j]); NL&g/4A[a  
SortUtil.swap(data,k,j); l[G ,sq"  
if((k-i)>1) quickSort(data,i,k-1); |BH, H  
if((j-k)>1) quickSort(data,k+1,j); k`)LO`))  
M#S8x@U  
} pI(FUoP^  
/** F]yclXf('  
* @param data r\],5x'xSu  
* @param i ~R)w 9uq  
* @param j l$m^{6IYc  
* @return Bo%M-Gmu  
*/ 3{MIBMA  
private int partition(int[] data, int l, int r,int pivot) { w#PaN83+  
do{ oE)c8rE  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~ezCE4^&  
SortUtil.swap(data,l,r); -<z'f){gb  
} fbuop&FN+q  
while(l SortUtil.swap(data,l,r); r@%32h  
return l; fY%Sw7ql<  
} mSQ!<1PM  
yvDzxu  
} 4vqu(w8 L  
T>f-b3dk  
改进后的快速排序: qWE"vI22M  
S"3g 1yU^_  
package org.rut.util.algorithm.support; Z/-%Eb]L1  
\ vJ*3H6  
import org.rut.util.algorithm.SortUtil; vy|}\%*r~  
Bl`e+&b  
/** 6w1:3~a  
* @author treeroot #i2q}/w5`C  
* @since 2006-2-2 :L`z~/6  
* @version 1.0 ^* DKF  
*/ /-|xxy  
public class ImprovedQuickSort implements SortUtil.Sort { $ @1&G~x  
`}Q;2 F  
private static int MAX_STACK_SIZE=4096; MeplM$9  
private static int THRESHOLD=10; 8#Z$}?W  
/* (non-Javadoc) !uO|T'u0a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e:7aVOm  
*/ 9oq(5BG,  
public void sort(int[] data) { cQ+, F2  
int[] stack=new int[MAX_STACK_SIZE]; '!1lK  
p$9N}}/c  
int top=-1; R*yB);p  
int pivot; K4R jGSaF  
int pivotIndex,l,r; $^ >n@Q@&L  
V;:A&  
stack[++top]=0; 9h0|^ttF  
stack[++top]=data.length-1; > %Y#(_~a  
T3?kabbF  
while(top>0){ ;F0A\5I  
int j=stack[top--]; -5>g 0o2  
int i=stack[top--]; T@vVff  
>LLzG  
pivotIndex=(i+j)/2; 5~[ Fh2+  
pivot=data[pivotIndex]; 7L<oWAq  
@~N#)L^  
SortUtil.swap(data,pivotIndex,j); P2s0H+<  
6kDU}]c:H]  
file://partition 3QR-8  
l=i-1; /?6y2t  
r=j; O-'T*M>  
do{ u8,T>VNVw  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5j}@Of1pd  
SortUtil.swap(data,l,r); 3<`h/`ku  
} XqwdJND  
while(l SortUtil.swap(data,l,r); n&V(c&C  
SortUtil.swap(data,l,j); x)Th2es\  
@%fkW"y:  
if((l-i)>THRESHOLD){ _9gn;F  
stack[++top]=i;  C3<3  
stack[++top]=l-1; [X=eCHB?  
} kU^@R<Fo  
if((j-l)>THRESHOLD){ :iWV:0)P  
stack[++top]=l+1; q;AQ6k(  
stack[++top]=j; ?41| e+p  
} <_Lo3WGwc  
)eG&"3kFe!  
}  OB^  
file://new InsertSort().sort(data); &a(w0<  
insertSort(data); x p$0J<2  
} eo,]b1C2n  
/** . LS.Z 4@  
* @param data mcR!P~"i  
*/ 4{Ak|  
private void insertSort(int[] data) { pucHB<R@bL  
int temp; V\xQM;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0ib 6}L%  
} Pb`sn5;  
} 7yj2we  
} v m$v[  
zld>o3K}  
} 2>r.[  
@6Mo_4)O  
归并排序: [&4y@  
tw(2V$J  
package org.rut.util.algorithm.support; ZEMo`O  
?@,:\ ,G  
import org.rut.util.algorithm.SortUtil; :Oj+Tc9A  
l00D|W_ 9  
/** L7b{H2 2  
* @author treeroot @Uu\x~3y  
* @since 2006-2-2 y7Ub~q U  
* @version 1.0 ZN1p>+oY!  
*/ NR [VGZj  
public class MergeSort implements SortUtil.Sort{ j)0R*_-B[  
Nl8Cctrf  
/* (non-Javadoc) g-s@m}[T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V:+bq`  
*/ 0CR;t`M@  
public void sort(int[] data) { hh{liS% 10  
int[] temp=new int[data.length]; d"cfSH;h  
mergeSort(data,temp,0,data.length-1);  (M=Br  
} >fdN`W }M  
O*PHo_&G  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^ Q}1&w%  
int mid=(l+r)/2; zhe5i;M  
if(l==r) return ; tv{.iM|V c  
mergeSort(data,temp,l,mid); t5qAH++axN  
mergeSort(data,temp,mid+1,r); s [!SG`&  
for(int i=l;i<=r;i++){ lyPXlt  
temp=data; W7 E-j+2  
} z~_\onC  
int i1=l; |)_R bqZ  
int i2=mid+1; %xruPWT:k  
for(int cur=l;cur<=r;cur++){ r/v&tU  
if(i1==mid+1) +OmSR*fA0  
data[cur]=temp[i2++]; SrtmpQ  
else if(i2>r) izw}25SW  
data[cur]=temp[i1++]; h.^DRR^S  
else if(temp[i1] data[cur]=temp[i1++]; mc=*wr$  
else E.3}a>f  
data[cur]=temp[i2++]; Rt|Hma  
} n\YxRs7 hF  
} 3{z|301<m  
r?TK@^z  
} K6U>Qums  
{Vm36/a  
改进后的归并排序: mI0r,Z*+M  
MD)"r>k  
package org.rut.util.algorithm.support; 8G P}g?%  
( A)wcB  
import org.rut.util.algorithm.SortUtil; #.)>geLC>9  
l.juys8s  
/** cn0Fz"d  
* @author treeroot "m3Y))a  
* @since 2006-2-2 iQF}x&a<  
* @version 1.0 ~}AP@t*  
*/ B@=<'/S\7  
public class ImprovedMergeSort implements SortUtil.Sort { AIyv;}5  
&^H "T6  
private static final int THRESHOLD = 10; h~@+M5r,  
!;gke,fB  
/* < &2,G5XA  
* (non-Javadoc) &>{>k<z  
* lo:~~l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c5R{Sl  
*/ qrc/Q;$  
public void sort(int[] data) { VZoOdR:d  
int[] temp=new int[data.length]; \sd"iMEi  
mergeSort(data,temp,0,data.length-1); C":\L>Ax  
}  aC: l;  
nS4S[|w"  
private void mergeSort(int[] data, int[] temp, int l, int r) { E2IVR]C2^  
int i, j, k; f zO8by  
int mid = (l + r) / 2; -#6*T,f0P(  
if (l == r) ArYF\7P  
return; ];;w/$zke  
if ((mid - l) >= THRESHOLD) ([*t.  
mergeSort(data, temp, l, mid); DcA'{21  
else !&lPdEc@T  
insertSort(data, l, mid - l + 1); njMy&$6a##  
if ((r - mid) > THRESHOLD) ~P_kr'o  
mergeSort(data, temp, mid + 1, r); ]Qr8wa>Z  
else ;l()3;  
insertSort(data, mid + 1, r - mid); LDeVNVM  
GJs[m~`8#  
for (i = l; i <= mid; i++) { c!Vc_@V,  
temp = data; J36@Pf]h  
} L@r.R_*H?s  
for (j = 1; j <= r - mid; j++) { sV[Z|$&Z  
temp[r - j + 1] = data[j + mid]; Xb* _LZAU  
} hhAC@EGG  
int a = temp[l]; M[u3]dN  
int b = temp[r]; 4d G-  
for (i = l, j = r, k = l; k <= r; k++) { "S`wwl  
if (a < b) { --`LP[ll  
data[k] = temp[i++]; )c/y07er  
a = temp; o(/ ia3  
} else { o$VH,2 QF  
data[k] = temp[j--]; >;v0zE  
b = temp[j]; ;|QR-m2/  
} acY[?L_6J  
} v:MS0]  
} 2TEeP7  
RCYbRR4y  
/** "n }fEVJ,  
* @param data Q+(:n)G_6E  
* @param l /'6[*]IZP  
* @param i 9Fx z!-9m  
*/ Ko)T>8:  
private void insertSort(int[] data, int start, int len) { T zYgH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); NB5B$q_'#  
} ?]D+H%3[$i  
} o%PoSZZ  
} Z4ov  
} \BaN5+ B6  
' ,`4 U F  
堆排序: J7;n;Mx  
:TYzzl43  
package org.rut.util.algorithm.support; 8;\tP29  
 jnzz~:  
import org.rut.util.algorithm.SortUtil; 0C+y q'D~[  
3dDQz#  
/** [e@OHQM  
* @author treeroot P8,jA<W  
* @since 2006-2-2 ?>jArzI  
* @version 1.0 G>S1Ld'MV  
*/ _8pkejg  
public class HeapSort implements SortUtil.Sort{ 1vK(^u[  
`Mn{bd  
/* (non-Javadoc) NvHy'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s k6|_  
*/ ,tF" 4|#  
public void sort(int[] data) { Bj($_2M%+  
MaxHeap h=new MaxHeap(); u|>U`[Zpj  
h.init(data); nQ!#G(_nO  
for(int i=0;i h.remove(); MQH8Q$5D  
System.arraycopy(h.queue,1,data,0,data.length); O\F^@;] F6  
} 0*IY%=i  
:'rZZeb'  
private static class MaxHeap{ i^cM@?  
t>GLZzO  
void init(int[] data){ W<N QU f[=  
this.queue=new int[data.length+1]; 7K]U |K#  
for(int i=0;i queue[++size]=data; D3AtYt  
fixUp(size); < Gy!i/  
} o p5^9`"  
} 5YG@[ic  
~K#_'Ldrd  
private int size=0; 4f[M$xU&h  
`{Di*  
private int[] queue; i =fOdp  
-5,y 1_M  
public int get() { ="w8U'  
return queue[1]; (VI* c!N  
} h:Mn$VR,  
p C2c(4  
public void remove() { lyH X#]  
SortUtil.swap(queue,1,size--); V?V)&y] 4  
fixDown(1); Nw$[a$^n  
} ^AjYe<RU}  
file://fixdown ,-I F++q  
private void fixDown(int k) { O{cGk: y  
int j; q{Ta?|x#  
while ((j = k << 1) <= size) { :f !=_^}  
if (j < size %26amp;%26amp; queue[j] j++; @uM3iO7&  
if (queue[k]>queue[j]) file://不用交换 (T#(A4:6S  
break; vl{_M*w ;  
SortUtil.swap(queue,j,k); m57tO X  
k = j; S}p&\w H  
} tqwk?[y}+l  
} IJBJebqL  
private void fixUp(int k) { p<0kmA<B/  
while (k > 1) { )>X|o$2  
int j = k >> 1; . I&)MZ>n  
if (queue[j]>queue[k]) C|~JPcl  
break; "K$Wh1<7  
SortUtil.swap(queue,j,k); %f> |fs  
k = j; si!9Gz;  
} >7(~'#x8A"  
} :*&9TNU E@  
73s3-DS,  
} bR8 HGH28  
z2nUul(2  
} ;'Vipj   
6v2RS  
SortUtil: 3{I=#>;  
.";tnC!e  
package org.rut.util.algorithm; x [{q&N!"`  
vu'!-K=0  
import org.rut.util.algorithm.support.BubbleSort; SL\y\G aV  
import org.rut.util.algorithm.support.HeapSort; ?ZuD _L-i  
import org.rut.util.algorithm.support.ImprovedMergeSort; lF}$`6  
import org.rut.util.algorithm.support.ImprovedQuickSort; i h$@:^\  
import org.rut.util.algorithm.support.InsertSort; vPl6Das r  
import org.rut.util.algorithm.support.MergeSort; WVT5VJ7*  
import org.rut.util.algorithm.support.QuickSort; ug6f   
import org.rut.util.algorithm.support.SelectionSort; tp0!,ne*  
import org.rut.util.algorithm.support.ShellSort; e"s{_V  
w{zJE]7  
/** q{De&Bu  
* @author treeroot " ,aT<lw.  
* @since 2006-2-2 qp~4KukL  
* @version 1.0 1nlE3Y?AV  
*/ sRe#{EuJ  
public class SortUtil { Q!2iOvK  
public final static int INSERT = 1; AR+\uD=\I-  
public final static int BUBBLE = 2; s?G'l=CcKu  
public final static int SELECTION = 3; sAjKf\][  
public final static int SHELL = 4; 5nxS+`Pn.)  
public final static int QUICK = 5; N9JgV,`  
public final static int IMPROVED_QUICK = 6; M8",t{7  
public final static int MERGE = 7; 8NAWA3^B  
public final static int IMPROVED_MERGE = 8; XC/]u%n8](  
public final static int HEAP = 9; X\3 ,NR,  
|!xfIR>=F  
public static void sort(int[] data) { =6Kv`  
sort(data, IMPROVED_QUICK); =S[FJaIu7  
} 6Er0o{iI  
private static String[] name={ e2-70UvW^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (9YYv+GGd*  
}; vA "`0  
#EQx  
private static Sort[] impl=new Sort[]{  $`XN  
new InsertSort(), FG;<`4mY  
new BubbleSort(), B=Zukg1G  
new SelectionSort(), hV>4D&<  
new ShellSort(), @cS1w'=  
new QuickSort(), sx-Hw4.a"  
new ImprovedQuickSort(), I"F .%re  
new MergeSort(), ><#2O  
new ImprovedMergeSort(), mS)|6=Y  
new HeapSort() J^g,jBk  
}; 0,~6TV<K  
GOZQ5m -  
public static String toString(int algorithm){ q(jkit~`A  
return name[algorithm-1]; vU8FHVytV  
} 7i+!^Qj?y  
M]4=(Vv+5  
public static void sort(int[] data, int algorithm) { =mi:<q  
impl[algorithm-1].sort(data); aX[1H6&=7  
} x '=3&vc4  
P+;CE|J`X  
public static interface Sort { B.Zm$JZ:  
public void sort(int[] data); veX"CY`hn  
} z*dQIC  
e0~sUVYf  
public static void swap(int[] data, int i, int j) { j2 o1"  
int temp = data; !0!U01SWa  
data = data[j]; /.| A  
data[j] = temp; [yYH>~SuwZ  
} :Er^"9'A2  
} :!+}XT7)/  
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