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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。 ]ddL'>$c$  
插入排序: 2qKAO/_O  
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package org.rut.util.algorithm.support; kh>i#9Ie  
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import org.rut.util.algorithm.SortUtil; R_:-Z .  
/** h#|Ac>fz  
* @author treeroot sNC~S%[  
* @since 2006-2-2 VOp+6ho<  
* @version 1.0 M3)Id?|]6  
*/ Vt4,?"  
public class InsertSort implements SortUtil.Sort{ 2-"`%rE  
MPsm)jqX  
/* (non-Javadoc) jSvo-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "fd'~e$S#  
*/ 7{=+Va5  
public void sort(int[] data) { !/e8x;_  
int temp; r`:dUCFE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t@`Sa<  
} ;AarpUw'  
} @=l.J+lh  
} \3j4=K'nE  
l-[5Zl;"  
} @#5?tk0  
(G{2ec:?  
冒泡排序: ~$ 4!C'0  
v%Su#xq/  
package org.rut.util.algorithm.support; NbhQ-  
6uWPIM;  
import org.rut.util.algorithm.SortUtil; #j"N5e}U  
^c>ROpic  
/** AiV1 vD`  
* @author treeroot X,+N/ nku  
* @since 2006-2-2 Otm7j>w  
* @version 1.0 "I[u D)$  
*/ {_J1m&/  
public class BubbleSort implements SortUtil.Sort{ NUX2{8gs  
[\pp KC  
/* (non-Javadoc) JB!KOzw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _We4%  
*/ 6J\A%i  
public void sort(int[] data) { Dt+u f5o(  
int temp; &-`a`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ )/?s^D$,  
if(data[j] SortUtil.swap(data,j,j-1); Pill |4c<  
} 6 Zv~c(   
} LGC3"z\=  
} AjO|@6  
} ot,e?lF  
Jb` yK@x  
} k.#[h@Pm  
#K[6Ai=We}  
选择排序: VK$s+"  
n0'"/zyc  
package org.rut.util.algorithm.support; 0]t7(P"F6  
dIvvJk8  
import org.rut.util.algorithm.SortUtil; 3=kw{r[2lM  
vtf`+q  
/** &0@AM_b  
* @author treeroot ?rububDT{  
* @since 2006-2-2 nA XWbavY  
* @version 1.0 NiH.Pv)Oa'  
*/ o7s<G8;?  
public class SelectionSort implements SortUtil.Sort { 4B=@<( H  
VWE`wan<  
/* CZ/:(sOJ  
* (non-Javadoc) fhQ}Z%$  
* ?N!.:~~k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;!/g`*?  
*/ @RVj~J.A  
public void sort(int[] data) { Pt %EyFG  
int temp; BYsQu.N  
for (int i = 0; i < data.length; i++) { 6SmawPPP  
int lowIndex = i; yDBMm^  
for (int j = data.length - 1; j > i; j--) { &GLe4zEh  
if (data[j] < data[lowIndex]) { }q[IhjD%  
lowIndex = j; U10:@Wzh  
} H=7Nh6v  
} RB/;qdqR  
SortUtil.swap(data,i,lowIndex); 2o9IP>#u  
} D,;6$Pvg^  
} G_n~1?  
}h`ddo  
} bjGQ04da  
1 gx(L*y,  
Shell排序: {'eF;!!Dy  
]5i]2r1  
package org.rut.util.algorithm.support; (e6KSRh2fF  
_'DZoOH|VE  
import org.rut.util.algorithm.SortUtil; \jThbCb  
7 `& NB]  
/** WCZeY?_^c  
* @author treeroot sD`OHV:  
* @since 2006-2-2 UG<`m]  
* @version 1.0 S.A|(?x  
*/ ! V;glx[  
public class ShellSort implements SortUtil.Sort{ >>HC|  
pj9s=}1 '  
/* (non-Javadoc) ,O ]AB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2*@.hBi  
*/ ?o6\>[O  
public void sort(int[] data) { CaqMLi%  
for(int i=data.length/2;i>2;i/=2){ lC(g&(\{  
for(int j=0;j insertSort(data,j,i); QF`o%mI  
} uNRT@@oCq  
} /:@X<  
insertSort(data,0,1); Luu.p<   
} #sp8 !8|y  
2XGbqZj  
/** i5^U1K\M  
* @param data W8{zV_TBm  
* @param j 0ud>oh4WPR  
* @param i H@hHEzO  
*/ Qp]-4%^Vz  
private void insertSort(int[] data, int start, int inc) { 1brKs-z  
int temp; ZRo-=/1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2k3yf_N  
} meNz0ve  
} +zn207 .`  
} @&M$oI$4*  
0vm}[a4+i;  
} JqYt^,,Q:  
n^Sc*7  
快速排序: f'3sT(1&  
Kw ^tvRt'*  
package org.rut.util.algorithm.support; f.y~Sew  
`T;Y%"X!  
import org.rut.util.algorithm.SortUtil; n32.W?9  
esVZ2_eL  
/** v\?J$Hdd  
* @author treeroot Ffp<|2T2_  
* @since 2006-2-2 =3?"s(9  
* @version 1.0 SR\F2@u  
*/ P",E/beV  
public class QuickSort implements SortUtil.Sort{ 2DbM48\E  
+4%: q~C  
/* (non-Javadoc) vs~lyM/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r 2L=gI  
*/ D1VM_O  
public void sort(int[] data) { p~w|St 7jg  
quickSort(data,0,data.length-1); *=ymK*  
} r@m2foaO  
private void quickSort(int[] data,int i,int j){ -P3;7_}]:h  
int pivotIndex=(i+j)/2; ,dIo\Lm  
file://swap "G`8>1tO_  
SortUtil.swap(data,pivotIndex,j); Z w&_Wt  
_{5t/^w&!  
int k=partition(data,i-1,j,data[j]); 15^5y RXC  
SortUtil.swap(data,k,j); CAD:ifV  
if((k-i)>1) quickSort(data,i,k-1); h*GU7<F:a  
if((j-k)>1) quickSort(data,k+1,j); Z'I0e9Jw  
!p~K;p,  
} H;O PA8\n  
/** .xp|w^  
* @param data %d\|a~p:  
* @param i H\Jpw  
* @param j IN%04~= H  
* @return `e!hT@Xxa  
*/ 2dF:;k k  
private int partition(int[] data, int l, int r,int pivot) { N%.Dj H  
do{ 5{&<X.jv  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); TGJ\f  
SortUtil.swap(data,l,r); zUhJr$N$  
} ?~5J!|r#  
while(l SortUtil.swap(data,l,r); Xqac$%[3  
return l; S(f V ,;Z  
} 8?7gyp!k_f  
:>t? ^r(  
} ]'/ZSy,  
~t~5ctJ@  
改进后的快速排序: mrfc.{`[  
>%D=#}8l@  
package org.rut.util.algorithm.support; _Vq7Gxy$R  
~?c}=XL-  
import org.rut.util.algorithm.SortUtil; wCb%{iowH  
<C'S#5,2  
/** Ay Obaa5  
* @author treeroot 3[jk}2R';p  
* @since 2006-2-2 ^:RDu q  
* @version 1.0 Nh[{B{k  
*/ Uieg4Iro  
public class ImprovedQuickSort implements SortUtil.Sort { UT9=S21  
HGgw<Os-k  
private static int MAX_STACK_SIZE=4096; \O7?!i  
private static int THRESHOLD=10; Tcglt>tj"  
/* (non-Javadoc) Ht'jm(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '\2lWR]ndd  
*/ Z)U#5|sf  
public void sort(int[] data) { ;')T}wuq  
int[] stack=new int[MAX_STACK_SIZE]; 0CD2o\`8  
G"BoD5m  
int top=-1; ):_x  
int pivot; -^ (NIl'  
int pivotIndex,l,r; L^`oJ9k!  
995^[c1o6  
stack[++top]=0; ,K'}<dm|x  
stack[++top]=data.length-1; Lu~e^Ul   
GZN@MK*co  
while(top>0){ +"] 'h~W  
int j=stack[top--]; 8elT/Wl  
int i=stack[top--]; ^w<:UE2a!  
`f:5w^A  
pivotIndex=(i+j)/2; a`w)awb  
pivot=data[pivotIndex]; Kup-O u,  
>Q~"/-bN)  
SortUtil.swap(data,pivotIndex,j); L?^C\g6u]  
8<g_JW[%  
file://partition C%P"Ds=w0N  
l=i-1; hfvs' .  
r=j; e;=G|E  
do{ b* 6c.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); NRKAEf_#w  
SortUtil.swap(data,l,r); uREc9z `Q'  
} ~P5!VNJ;r  
while(l SortUtil.swap(data,l,r); _W: S>ij(  
SortUtil.swap(data,l,j); TBQ`:`g^m  
rrSA.J{  
if((l-i)>THRESHOLD){ MjI}fs<   
stack[++top]=i; 55oLj.l^j  
stack[++top]=l-1; KG#|Cq  
} iR#jBqXD  
if((j-l)>THRESHOLD){ ,gU9y wg  
stack[++top]=l+1; &%Hj.  
stack[++top]=j; )`rC"N)  
} =*'X  
ftq~AF  
} 'q[V*4g  
file://new InsertSort().sort(data); \]J" e%  
insertSort(data); pAmTwe  
} U gB  
/** e7L;{+XI  
* @param data yh5KN_W  
*/ Y@.> eS  
private void insertSort(int[] data) { zck)D^,aO  
int temp; U2ANu|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [jumq1  
} &V( LeSI  
} wH#k~`M  
} N13 <!QQ  
CWkm\=  
} No[xf9>t  
&F#X0h/m=  
归并排序: bi^LpyEn  
"_)   
package org.rut.util.algorithm.support; kXX RMR  
raJyo>xXb5  
import org.rut.util.algorithm.SortUtil; `T9<}&=!  
]Wa,a T'  
/** n.l p ena  
* @author treeroot d(a6vEL4  
* @since 2006-2-2 Iz{AA-  
* @version 1.0 ((dG<  
*/ .^kTb2$X  
public class MergeSort implements SortUtil.Sort{ l:@.D|(o3  
I )B2Z(<Q  
/* (non-Javadoc) m Xw1%w[*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !9)*.9[8  
*/ n? s4"N6  
public void sort(int[] data) { {8jG6  
int[] temp=new int[data.length]; Q|G[9HBI  
mergeSort(data,temp,0,data.length-1); '`o+#\,b^%  
} m@c2'*&Y  
w-nkf M~  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^ O`  
int mid=(l+r)/2; 9DtSYd/  
if(l==r) return ; E$G "R =  
mergeSort(data,temp,l,mid); [=E<iPl  
mergeSort(data,temp,mid+1,r); .Yu,&HR  
for(int i=l;i<=r;i++){ d&'6l"${  
temp=data; @pko zE-  
} &(.ZHF  
int i1=l; R a*9d]N@  
int i2=mid+1; BLJ-' 8G  
for(int cur=l;cur<=r;cur++){ Hh@mIusj  
if(i1==mid+1) Y66 vJ<lM  
data[cur]=temp[i2++]; HRw,D=  
else if(i2>r) 3]VTQl{P  
data[cur]=temp[i1++]; t1~*q)!Mo  
else if(temp[i1] data[cur]=temp[i1++]; #-V Kk  
else w|5}V6WD  
data[cur]=temp[i2++]; Z=H f OC  
} i([A8C_A  
} mA>Pr<aV:  
Sdt @"6  
} ,vhR99g{  
gVl#pVO`N  
改进后的归并排序: h'jnc.  
yWK[@;S]%  
package org.rut.util.algorithm.support; ?4~lA L1  
/V*eAn8>  
import org.rut.util.algorithm.SortUtil; tIvtiN6[|l  
7PvuKAv?k  
/** [wOO)FjT  
* @author treeroot 54)}^ftY^  
* @since 2006-2-2 g{a0,B/j  
* @version 1.0 uIPR*9~6o  
*/ $i`YtV  
public class ImprovedMergeSort implements SortUtil.Sort { kdo)y(fn@  
FVpe*]  
private static final int THRESHOLD = 10;  3sw1y  
~|!lC}!IKL  
/* eX$Biv1N  
* (non-Javadoc) ,#m\W8j  
* kR_[p._  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PRUGUHY  
*/ C eg6 o &^  
public void sort(int[] data) { u@|yw)  
int[] temp=new int[data.length]; #\M<6n{  
mergeSort(data,temp,0,data.length-1); EagI)W!s[  
} Fq3;7Cq=hD  
 ~.Gk:M  
private void mergeSort(int[] data, int[] temp, int l, int r) { f[ywC$en  
int i, j, k; 1GNA x\(  
int mid = (l + r) / 2; SVHtv0Nx  
if (l == r) a&<<X:$Hy  
return; s6 ^JgdW  
if ((mid - l) >= THRESHOLD) &, )tD62s  
mergeSort(data, temp, l, mid); r#j*vO '  
else &vn9l#\(  
insertSort(data, l, mid - l + 1); cP Y^Bf5)  
if ((r - mid) > THRESHOLD) SW=p5@Hy{  
mergeSort(data, temp, mid + 1, r); z(=:J_N  
else =wQ=`  
insertSort(data, mid + 1, r - mid); %SE g(<  
xphqgOc12,  
for (i = l; i <= mid; i++) { qnlj~]NV  
temp = data; npF[J x[  
} f0uiNy(r$  
for (j = 1; j <= r - mid; j++) { {J]|mxo  
temp[r - j + 1] = data[j + mid]; 8 , =$>@u  
} o]j*  
int a = temp[l]; _Dv^~e1c  
int b = temp[r]; ppYz~ {"r  
for (i = l, j = r, k = l; k <= r; k++) { r3-3*_  
if (a < b) { i>~?XVU  
data[k] = temp[i++]; D'&L wU,o  
a = temp; :z:Blp>nK/  
} else { Mc6y'w  
data[k] = temp[j--];  96BMJE'  
b = temp[j]; K$Ph$P@   
} ~,:f,FkSQ  
} hG67%T'}A  
} Uwp +w  
QJ /SP  
/** #.@=xhK/  
* @param data o6r4tpiR5  
* @param l `#]\Wnp~y  
* @param i fS ~.K9  
*/ `4=b|N+b"  
private void insertSort(int[] data, int start, int len) { $1v5*E  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0v_8YsZ!`$  
} W< n`[  
} 9NT;^K^ I  
} i_MI!o  
} \x!>5Z Y  
LWI~m2  
堆排序: @FTi*$Ix  
D)_Ei'+*l  
package org.rut.util.algorithm.support; dd$N4&  
V~=)#3]`[  
import org.rut.util.algorithm.SortUtil; y AWDk0bx  
--9mTqx  
/** B'Wky>5)  
* @author treeroot w.8~A,5}Dh  
* @since 2006-2-2 'GFzI:Xr  
* @version 1.0 ]VvJ1Xn0  
*/ "jHN#}  
public class HeapSort implements SortUtil.Sort{ ^Toi_  
R+K[/AA  
/* (non-Javadoc) #RF=a7&F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Trrh`@R  
*/ #jX>FXo  
public void sort(int[] data) { @I&"P:E0F;  
MaxHeap h=new MaxHeap(); =Wf@'~K0k"  
h.init(data); `T70FsSJ  
for(int i=0;i h.remove(); Q-F9oZ*0  
System.arraycopy(h.queue,1,data,0,data.length); "7HB3?2>W  
} G DV-wPX  
L9T u>4  
private static class MaxHeap{ :m d3@r']  
Pio^5jhB6  
void init(int[] data){ z+*Z<c5d  
this.queue=new int[data.length+1]; -?W@-*J  
for(int i=0;i queue[++size]=data; | 6>_L6t  
fixUp(size); aM~fRra7  
} f2wW2]Fg  
} W%1S:2+Kl  
}>0 Kc=  
private int size=0; Db=gS=Qm  
gnXjd}  
private int[] queue; V5B-S.i@  
{Fi@|'  
public int get() { :j ~5(K"  
return queue[1]; @m V C  
} { rT`*P~  
u3vmC:bV  
public void remove() { q3F5\6aN  
SortUtil.swap(queue,1,size--); d<'xpdxc  
fixDown(1); |Z ,G  
} Q7|13^ |C  
file://fixdown !qlGt)G3  
private void fixDown(int k) { mB{{o}'<u  
int j; ??Zmj:8E'  
while ((j = k << 1) <= size) { Z+"&{g  
if (j < size %26amp;%26amp; queue[j] j++; ^>Y%L(>  
if (queue[k]>queue[j]) file://不用交换 F"xO0t  
break; PoJ$%_a}  
SortUtil.swap(queue,j,k); Jdn*?hc+  
k = j; d 4]%Wdvf  
} g5Rm!T+@I<  
} (fa?f tK  
private void fixUp(int k) { s3{s.55{m  
while (k > 1) { &._!)al  
int j = k >> 1; a[n$qPm}  
if (queue[j]>queue[k]) `?JgHk  
break; ~7pjk  
SortUtil.swap(queue,j,k); +ZKhmb!  
k = j; |Vi&f5p,@  
} U*Qq5=dqD  
} 'c&@~O;^d  
4_+Pv6  
} K//T}-Uub  
N}fUBX4k  
} N-`;\  
hX m} d\  
SortUtil: ,dx)rZ*  
|QLX..  
package org.rut.util.algorithm; aMQjoamz  
A Vm{#^p[(  
import org.rut.util.algorithm.support.BubbleSort; N?;o_^C  
import org.rut.util.algorithm.support.HeapSort; `mjx4Lb  
import org.rut.util.algorithm.support.ImprovedMergeSort; |xZcT4  
import org.rut.util.algorithm.support.ImprovedQuickSort; mE`qvavP|/  
import org.rut.util.algorithm.support.InsertSort; >&QH{!(  
import org.rut.util.algorithm.support.MergeSort; R9h>I3F=c  
import org.rut.util.algorithm.support.QuickSort; {~fCqP.2  
import org.rut.util.algorithm.support.SelectionSort; Cc)P5\j h  
import org.rut.util.algorithm.support.ShellSort; *O> aqu  
UglG!1L  
/** 1G%PXrEj8  
* @author treeroot l&*)r;9  
* @since 2006-2-2 \bm6/fhA:  
* @version 1.0 tvT8UW'  
*/ c%@~%IGF  
public class SortUtil { {|Ki^8h/p  
public final static int INSERT = 1; (YHvGGr  
public final static int BUBBLE = 2; cEc,eq|  
public final static int SELECTION = 3; F,M"/hnPT  
public final static int SHELL = 4; P4j8`}&/  
public final static int QUICK = 5; W[E3P,XS  
public final static int IMPROVED_QUICK = 6; S tnv>  
public final static int MERGE = 7; UVc<C 1 q  
public final static int IMPROVED_MERGE = 8; ^}Qj}  
public final static int HEAP = 9; QZ3(u<f  
HDVl5X`j'  
public static void sort(int[] data) { fu<2t$Cn>  
sort(data, IMPROVED_QUICK); `E5"Pmg  
} ej%;%`C-  
private static String[] name={ yW^IN8fm  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {R-82%X  
}; vX0"S  
yv)nW::D(  
private static Sort[] impl=new Sort[]{ vM7vf6  
new InsertSort(), Y#&0x_Z  
new BubbleSort(), U`8 |9v  
new SelectionSort(), G4Kmt98I  
new ShellSort(), 6WN(22Io  
new QuickSort(), C`n9/[,#  
new ImprovedQuickSort(), 96pk[5lj{?  
new MergeSort(), rS )b1nPA  
new ImprovedMergeSort(), F`0c?)  
new HeapSort() ge):<k_  
}; =+`j?1  
#)0Tt>d6  
public static String toString(int algorithm){ 'B (eMnLg  
return name[algorithm-1]; LuP?$~z  
} hiRR+`L%  
cZr G:\A  
public static void sort(int[] data, int algorithm) { 6I>5~?#  
impl[algorithm-1].sort(data); a-5HIY5  
} "f|(@a  
BKQIo)g.G  
public static interface Sort { /Y[o=Uyl  
public void sort(int[] data); -nk#d%a\  
} 'DzBp  
8.CKH4h  
public static void swap(int[] data, int i, int j) { f[Fgh@4cj  
int temp = data; )W]>\=@Y  
data = data[j]; N pXgyD  
data[j] = temp; J4G> E.8  
} px _s@>l`  
} ~J1;tZS  
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