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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。 kqX %y  
插入排序: Lm!]m\LRZD  
29 !QE>Q  
package org.rut.util.algorithm.support; 3Yx'/=]  
8MW-JZ  
import org.rut.util.algorithm.SortUtil; '/D2d  
/** ~ecN4Oo4q;  
* @author treeroot @lM-+q(tl  
* @since 2006-2-2 ,;YNI  
* @version 1.0 G \a`F'Oo  
*/ 6;~V@t  
public class InsertSort implements SortUtil.Sort{ xc'uC bH  
Qu/f>tJN;  
/* (non-Javadoc) Q7`)&^ Hx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nT 4Ryld  
*/ V@RdvQy  
public void sort(int[] data) { F@z%y'5 Z*  
int temp; ' rXf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,;MUXCC'  
} &RuTq6)r  
} ADxje%!1O  
} cJ?,\@uuP  
EGFP$nvq  
} 4uE )*1  
|gk4X%o6  
冒泡排序: Nz"K`C>/  
B<myt79F_[  
package org.rut.util.algorithm.support; P1L+Vnfu  
mo tW7|p.e  
import org.rut.util.algorithm.SortUtil; J 7dHD(R8  
1bz^$2/k  
/** ' 8R5 Tl  
* @author treeroot $B9?>a|{A  
* @since 2006-2-2 PGZe'r1E9  
* @version 1.0 fwx^?/5j  
*/ A3HN Mz  
public class BubbleSort implements SortUtil.Sort{ ETX>wZ  
y% !.:7Y  
/* (non-Javadoc) Gys-Im6>~@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ze LIOw  
*/ 7On.y*  
public void sort(int[] data) { Bn.R,B0PL  
int temp; oFt_ yU-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ h1B_*L   
if(data[j] SortUtil.swap(data,j,j-1); xe.f]a  
} 1NTx?JJfW  
} rHybP6C<  
} l7<VHz0b  
} AU}|o0Ur  
2A*,9S|Y  
} 4QPHT#eqX  
>#;_Ebl@  
选择排序: 2w~Vb0  
8"LM:0x  
package org.rut.util.algorithm.support; [EVyCIcY,h  
C>-}BeY!  
import org.rut.util.algorithm.SortUtil; S,,Wb &A$  
iB~dO @  
/** S<*1b 6%D  
* @author treeroot +?QHSIQo  
* @since 2006-2-2 VgY6M_V  
* @version 1.0 q)@;8Z=_c  
*/ c/F!cW{z^  
public class SelectionSort implements SortUtil.Sort { Q?>*h xzoP  
C=K{;.  
/* 1Qjc*+JzO.  
* (non-Javadoc) {~#01p5  
* gC%$)4-:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %Zfh6Bl\X  
*/ 7bVKH[  
public void sort(int[] data) { y+7+({w<  
int temp; 4Pf"R ~&[  
for (int i = 0; i < data.length; i++) { m<;MOS  
int lowIndex = i; HFYe@2r  
for (int j = data.length - 1; j > i; j--) { nc.P  
if (data[j] < data[lowIndex]) { Q/HEWk  
lowIndex = j; iH dX  
} !WB3%E,I  
} PKGqu,J,  
SortUtil.swap(data,i,lowIndex); E1A5<^t  
} G!D~*B9 G  
} AGx(IK/_  
gxVJH'[V5  
} jC-`u-_'j  
QdD@[  
Shell排序: ep l1xfr  
 ?f5||^7  
package org.rut.util.algorithm.support; 2@&"*1(Xu  
27F:-C~.9  
import org.rut.util.algorithm.SortUtil; O`~L*h_  
YR)^F|G  
/** sI4 FgO  
* @author treeroot {D]I[7f8Ev  
* @since 2006-2-2 0h('@Hb.K#  
* @version 1.0  |>Pv2  
*/ 1bCS4fs^>  
public class ShellSort implements SortUtil.Sort{ R^K:hKQ  
])zpx-  
/* (non-Javadoc) PhmtCp0-7-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ml_!)b  
*/ x ;]em9b  
public void sort(int[] data) { {#+'T13sx  
for(int i=data.length/2;i>2;i/=2){ ,`$2  
for(int j=0;j insertSort(data,j,i); #hEU)G' $+  
} <1U *{y  
} ?Xp+5{  
insertSort(data,0,1); MR* % lZpB  
} 7#g<fh  
u/`x@u  
/** NE@P8pQ>  
* @param data +C4NhA2  
* @param j r+MqjdXG  
* @param i bWB&8&p  
*/ DH4|lb}  
private void insertSort(int[] data, int start, int inc) { ZZ].h2= K  
int temp; wY7+E/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W jBtL52  
} ;:Y/"5h  
} rT{ 2  
} 2u} ns8wn  
e/IVZmUn^  
} Uetna!ABB  
9sB LCZ  
快速排序: Dr#V^"Dte  
c=IjR3F  
package org.rut.util.algorithm.support; i# Fe`Z ~J  
'/F~vSQsR  
import org.rut.util.algorithm.SortUtil; 9/5 EyV  
EJ Ta~  
/** `?vI_>md'!  
* @author treeroot dcN4N5r  
* @since 2006-2-2 I,?!NzB  
* @version 1.0 S!~p/bB[+I  
*/ ;:ocU?  
public class QuickSort implements SortUtil.Sort{ G#z9=NF~V  
k%({< ul  
/* (non-Javadoc) .J9\Fr@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M_F4I$V4  
*/ N|s8PIcSp  
public void sort(int[] data) { izr 3{y5  
quickSort(data,0,data.length-1); ?B:],aztf  
} q62U+o9G  
private void quickSort(int[] data,int i,int j){ E&|EokSyN  
int pivotIndex=(i+j)/2; M cbiO)@I  
file://swap ~ouRDO  
SortUtil.swap(data,pivotIndex,j); 2rX}A3%9^^  
=&;}#A%m  
int k=partition(data,i-1,j,data[j]); 'J#uD|9)  
SortUtil.swap(data,k,j); -<gQ>`(0  
if((k-i)>1) quickSort(data,i,k-1); v!rOT/I  
if((j-k)>1) quickSort(data,k+1,j); ut9R] 01:  
ZvW&%*k=  
} O9MBQNwjA  
/** z%WOv ~8~  
* @param data `k'Dm:*`u4  
* @param i AG,;1b,:81  
* @param j Kl+4A}Uo  
* @return d Y]i AJ  
*/ b]5S9^=LI  
private int partition(int[] data, int l, int r,int pivot) { Gjf1Ba  
do{ ZZF\;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0Ewt >~n  
SortUtil.swap(data,l,r); [ r=U-  
} * uZ'MS  
while(l SortUtil.swap(data,l,r); lyrwm{&  
return l; o|c"W}W  
} c jBHczkY  
F5f1j]c  
} AV["%$ :  
7:h_U9Za?$  
改进后的快速排序: kZvh<NFh_  
J~rjI24  
package org.rut.util.algorithm.support; #+PfrS=  
82Nw 6om6i  
import org.rut.util.algorithm.SortUtil; 08E,U  
5%(xZ  6  
/** B?<Z(d7  
* @author treeroot OL$^7FB  
* @since 2006-2-2 fsVr<m  
* @version 1.0 u&ozc  
*/ 2HJGp+H  
public class ImprovedQuickSort implements SortUtil.Sort { "0l7%@z*)q  
uB uwE6  
private static int MAX_STACK_SIZE=4096; 9IG3zMf  
private static int THRESHOLD=10; G@Vz }B:=  
/* (non-Javadoc) ( 0Z3Ksfj1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G@]|/kN1y  
*/ z`+j]NX]  
public void sort(int[] data) { jp QmKX  
int[] stack=new int[MAX_STACK_SIZE]; Kkz2N  
$^"_Fox]A\  
int top=-1; dq$C COC^F  
int pivot; 3q0^7)m0  
int pivotIndex,l,r; ^,;8ra*h  
KdTna6nY  
stack[++top]=0; r$.v"Wh)  
stack[++top]=data.length-1;  al:c2o  
Q\<^ih51  
while(top>0){ }x}JzA+2  
int j=stack[top--]; Oe%jV,S|V  
int i=stack[top--]; @](\cT64i3  
r<L>~S>yb  
pivotIndex=(i+j)/2; ='|HUxFi  
pivot=data[pivotIndex]; HxH=~B1"P  
V{G9E  
SortUtil.swap(data,pivotIndex,j); vdN0YCXG  
wC[Bh^]  
file://partition Dhe ]f#d  
l=i-1; Lg4I6 G  
r=j; BHBMMjY5  
do{ *]_GFixi  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4FgY!k  
SortUtil.swap(data,l,r); `m Tc  
} r=ds'n"  
while(l SortUtil.swap(data,l,r); w~(x*R}  
SortUtil.swap(data,l,j); VpMPTEZ*L  
b/Z 0{38  
if((l-i)>THRESHOLD){ Z'sO9Sg8>  
stack[++top]=i; ?*8HZ1m#  
stack[++top]=l-1; 5Pl~du  
} O6pL )6d  
if((j-l)>THRESHOLD){ nob^ I5?  
stack[++top]=l+1; [,fdNxc8  
stack[++top]=j; &$</|F)y  
} 5U/1Z{  
f~D> *<L4-  
} NTtRz(   
file://new InsertSort().sort(data); :+>:>$ao  
insertSort(data); S*1Km&  
} NCM&6<_  
/** : Gz#4k  
* @param data zl !`*{T{  
*/ ly] n2RK  
private void insertSort(int[] data) { ~|~j01#  
int temp; 8oj-5|ct  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H-,RzL/  
} ){oVVLs  
} W}5H'D  
} _(8HK  
\o j#*aL^  
} (g@e=m7Q  
zz4A,XrD  
归并排序: @pD']=d}t  
Bu$GCSrX  
package org.rut.util.algorithm.support; :K6(`J3Y"^  
o= %Fh  
import org.rut.util.algorithm.SortUtil; uvrfR?%QK  
1=t\|Th-  
/** ZkJYPXdn?  
* @author treeroot 9)qjW&`  
* @since 2006-2-2 d6.9]V?  
* @version 1.0 ^vJPeoW  
*/ [T.BK:  
public class MergeSort implements SortUtil.Sort{ .baS mfc  
i%~4>k  
/* (non-Javadoc) :>[;XT<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5)yQrS !{:  
*/ 0F<O \  
public void sort(int[] data) { w^&TG3m1~  
int[] temp=new int[data.length]; 4{\h53j$  
mergeSort(data,temp,0,data.length-1); z.[ Ok  
} $[Fh|%\  
ntSPHK|'  
private void mergeSort(int[] data,int[] temp,int l,int r){ F=hfbCF5x  
int mid=(l+r)/2; uj-q@IKe  
if(l==r) return ; -hP@L ++D  
mergeSort(data,temp,l,mid); khb Gyg%  
mergeSort(data,temp,mid+1,r); %L./U$  
for(int i=l;i<=r;i++){ ?~a M<rcZ  
temp=data; jz$)*Kdi*  
} -< 7KW0CA  
int i1=l; OZ q/'*  
int i2=mid+1; WbS2w @8  
for(int cur=l;cur<=r;cur++){ x=qACoq  
if(i1==mid+1) jBEt!Azur  
data[cur]=temp[i2++]; XRI1/2YA  
else if(i2>r) kl|KFdA;  
data[cur]=temp[i1++]; AX%9k  
else if(temp[i1] data[cur]=temp[i1++]; :!1B6Mc  
else yVxR||e  
data[cur]=temp[i2++]; ]*^mT&$7  
} 5|-(Ic  
} G2kr~FG  
4\?I4|{pC  
} ujcNSX*  
PL8eM]XS  
改进后的归并排序: V&_5q`L  
I@ch 5vl4  
package org.rut.util.algorithm.support; (*%+!PS  
u+zq:2)H6  
import org.rut.util.algorithm.SortUtil; xnu|?;.}!  
+MQf2|--  
/** A;h0BQm/j  
* @author treeroot 3yXF| yV  
* @since 2006-2-2 sf?D4UdIH  
* @version 1.0 ~2~KcgPsq  
*/ S[NV-)r=  
public class ImprovedMergeSort implements SortUtil.Sort { oS$&jd  
oj<.axA,  
private static final int THRESHOLD = 10; XTyn[n  
8*)zoT*A  
/* )E^4\3 ^:  
* (non-Javadoc) Ckvm3r\i2  
* mB#`{|1[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;X\>oV3#  
*/ u9>.x zYG  
public void sort(int[] data) { "wxs  
int[] temp=new int[data.length]; q]5"V>D \  
mergeSort(data,temp,0,data.length-1); FI~)ZhE)]  
} QHsS|\u  
6[c LbT0  
private void mergeSort(int[] data, int[] temp, int l, int r) { $+ZO{ (  
int i, j, k; DnaG$a<  
int mid = (l + r) / 2; / v;g v[  
if (l == r) C did*hxJ  
return; o)?"P;UhJX  
if ((mid - l) >= THRESHOLD) q[q#cY:0  
mergeSort(data, temp, l, mid); slHlfWHq  
else L"tj DAV  
insertSort(data, l, mid - l + 1); ^?toTU   
if ((r - mid) > THRESHOLD) _q=$L eO5  
mergeSort(data, temp, mid + 1, r); c?eV8h1G  
else 'mug,jM  
insertSort(data, mid + 1, r - mid); ,I@4)RSAH|  
"^<:7_Y  
for (i = l; i <= mid; i++) { r[M]2h  
temp = data; '8k\a{t_z  
} (1(3:)@S6  
for (j = 1; j <= r - mid; j++) { q?Q"Ab  
temp[r - j + 1] = data[j + mid]; n\*>m p)  
} *`);_EVc  
int a = temp[l]; 42Vy#t/HC  
int b = temp[r]; *s?&)][  
for (i = l, j = r, k = l; k <= r; k++) { 8{JTR|yB  
if (a < b) { : O t\l  
data[k] = temp[i++]; h.4;-&  
a = temp; oRy?Dx+H  
} else { J*,Ed51&7  
data[k] = temp[j--]; c1CP1 2  
b = temp[j]; Z5-"a?{Y  
} _QBd3B %  
} 8+ B.x  
} bg_Zf7{  
UY{ Uo@k9x  
/** $1\<>sJH  
* @param data \p@,+ -gX  
* @param l ahS*YeS7  
* @param i L|6clGp  
*/ JeUFCWm  
private void insertSort(int[] data, int start, int len) { aiw~4ix  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nf /iZ &  
} %nOBsln  
} 68)z`JI|<)  
} KzeA+PI  
} (LRv c!`"  
jfqWcX.X=  
堆排序: O`t ]#  
* 2T&pX  
package org.rut.util.algorithm.support; C+ r--"Z  
lEZ[0oa  
import org.rut.util.algorithm.SortUtil; RURO0`^  
P!B\:B%4~]  
/** zi[bpa17W  
* @author treeroot >eAlz 4  
* @since 2006-2-2 LD_aJ^(d  
* @version 1.0 V)Z*X88:Tv  
*/ B Ibcm,YQ  
public class HeapSort implements SortUtil.Sort{ uTP=kgYqJ  
s4MP!n?gB  
/* (non-Javadoc) PM=I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SP HeI@i  
*/ ~LO MwMHl  
public void sort(int[] data) { vCbqZdy?  
MaxHeap h=new MaxHeap(); 4p>@UB&U  
h.init(data); 9Wx q  
for(int i=0;i h.remove(); 5 ;dg#hO  
System.arraycopy(h.queue,1,data,0,data.length); HQ@X"y n  
} gl.P#7X  
2d<ma*2n(  
private static class MaxHeap{ '$1-A%e$1  
%>xW_5;Z  
void init(int[] data){ .b  N0!  
this.queue=new int[data.length+1]; "Oh-`C  
for(int i=0;i queue[++size]=data; $CL=M  
fixUp(size); Yq`r>g  
} #5G!lbH  
} [ "J  
l+R-lsj  
private int size=0; uA:;OM}  
RXl52#:  
private int[] queue; X@af[J[cQ  
$3Wl~ G}  
public int get() { a/L?R Uu  
return queue[1]; ?@_3B]Fs  
} 39"8Nq|e  
\+Qx}bS{  
public void remove() { j*W]^uT,  
SortUtil.swap(queue,1,size--); N[aK#o,  
fixDown(1); {x2N~1!E  
} [_-CO }>  
file://fixdown vj?9X5A_  
private void fixDown(int k) { HEjV7g0E  
int j; D\j1`  
while ((j = k << 1) <= size) { -U%wLkf|  
if (j < size %26amp;%26amp; queue[j] j++; G:u[Lk#6K  
if (queue[k]>queue[j]) file://不用交换 /d'^ XYOC  
break; ,D ;`t  
SortUtil.swap(queue,j,k); ,589/xTA@  
k = j; @YpA'cX7  
} *tz"T-6O  
} 'OBA nE<.  
private void fixUp(int k) { K{M_ 4'\  
while (k > 1) { @] )a  
int j = k >> 1; "-v9V7KCM  
if (queue[j]>queue[k]) g"# R>&P  
break; m'aw`?  
SortUtil.swap(queue,j,k); T{sw{E*  
k = j; K Qub%`n  
} a5Xr"-  
} ET=q 1t8  
quGb;)3  
} BR5$;-7W  
wg!  
} ;EL!TzL:8  
rU.ew~  
SortUtil: zFB$^)v"<  
' 'UiQ   
package org.rut.util.algorithm; 1__p1  
R8o9$&4_  
import org.rut.util.algorithm.support.BubbleSort; En5I  
import org.rut.util.algorithm.support.HeapSort; bB)EJCPq>  
import org.rut.util.algorithm.support.ImprovedMergeSort; g[H7.  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;\Wg>sq  
import org.rut.util.algorithm.support.InsertSort; ]7dm`XV  
import org.rut.util.algorithm.support.MergeSort; {r'#(\  
import org.rut.util.algorithm.support.QuickSort; /Pg66H#RUf  
import org.rut.util.algorithm.support.SelectionSort; nfrC@Av  
import org.rut.util.algorithm.support.ShellSort; C@]Z&H;  
1|z>} xP  
/** ut-UTW  
* @author treeroot gyI5;il~  
* @since 2006-2-2 %@H;6   
* @version 1.0 4^AE;= Q  
*/ "=yaeEp  
public class SortUtil { v,+2CVdW  
public final static int INSERT = 1; 2&$A x  
public final static int BUBBLE = 2; qMI%=@=  
public final static int SELECTION = 3; J# :%| F%  
public final static int SHELL = 4; x:sTE u@  
public final static int QUICK = 5; Bj%{PK  
public final static int IMPROVED_QUICK = 6; %\r4c*O1q  
public final static int MERGE = 7; 1!vR 8.  
public final static int IMPROVED_MERGE = 8; (O&ooM* o  
public final static int HEAP = 9; P}?,*'b  
_4%+TN6z  
public static void sort(int[] data) { TmzEZ<} &7  
sort(data, IMPROVED_QUICK); x,>@IEN7  
} zpg*hlv  
private static String[] name={ 9-bDgzk   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H~||]_q|  
}; [0MVsc=  
*QAK9mc  
private static Sort[] impl=new Sort[]{ Z[0xqGYLB  
new InsertSort(), Qs;bVlp!H  
new BubbleSort(), !Otyu6&  
new SelectionSort(), #[I`VA\x  
new ShellSort(), hz\7Z+$L_  
new QuickSort(), gR~XkU  
new ImprovedQuickSort(), 42# rhgW  
new MergeSort(), !30Dice  
new ImprovedMergeSort(), 5p=T*Y  
new HeapSort() z4{|?0=C  
}; Eer rIV  
v9M ;W+J  
public static String toString(int algorithm){ q ,}W.  
return name[algorithm-1]; J,+| Fb  
} }ZvL%4jT  
Bz7T1B&to  
public static void sort(int[] data, int algorithm) { $+7M Y-9T  
impl[algorithm-1].sort(data); T-|z18|!  
} Zf?>:P  
o1I{^7/  
public static interface Sort { "MK:y[+*  
public void sort(int[] data); LRB#|PW  
} (kb^=kw#0  
`;QpPSw+  
public static void swap(int[] data, int i, int j) { |3"'>* J  
int temp = data; rC/m}`b  
data = data[j]; ]_F%{8|  
data[j] = temp; wCn W]<+  
} ~p8-#A)X,)  
} <A"}Krq?  
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