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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.=&:ay7?  
插入排序: 6(VCQ{  
77.5 _  
package org.rut.util.algorithm.support; FX4](oM  
RV.*_FG  
import org.rut.util.algorithm.SortUtil; A{Jv`K  
/** qJKD| =_  
* @author treeroot hT#[[md"  
* @since 2006-2-2 2>_6b>9]  
* @version 1.0 [ wi "  
*/ v_En9~e^n  
public class InsertSort implements SortUtil.Sort{ P] ouLjyq  
zsc8Lw  
/* (non-Javadoc)  \|L@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \2*<Pq  
*/ VrrCW/ o  
public void sort(int[] data) { !i2=zlpb[  
int temp; ?yU|;my  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &Dgho  
} Jr==AfxyT  
} ehoDWO]S  
} TY],H=  
Nj@k|_1  
} (G*--+Gn  
gQCkoQi:j  
冒泡排序: h 1:uTrtA  
,yNPD}@v>  
package org.rut.util.algorithm.support; +MIDq{B  
3W5|Y@0  
import org.rut.util.algorithm.SortUtil; 0bVtku K;G  
FDkRfhK  
/** nxA Y]Q  
* @author treeroot Z;P[)q  
* @since 2006-2-2 /#GX4&z  
* @version 1.0 JnlM0jc]`  
*/ &>ii2% 4  
public class BubbleSort implements SortUtil.Sort{ Y7zg  
s0~a5Ti3  
/* (non-Javadoc) r=~yUT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x;?4AJ{  
*/ D\jRF-z  
public void sort(int[] data) { .R#p<"$I  
int temp; j *Ta?'*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (dLt$<F  
if(data[j] SortUtil.swap(data,j,j-1); c5+oP j  
} pej/9{*xg(  
} b54<1\&  
} ?kI-o0@O.  
} HpC|dtro  
Ks(+['*S  
} . Zrt/;  
pLE|#58I  
选择排序: 2G=Bav\n+  
NIY0f@1z-  
package org.rut.util.algorithm.support; >2_BL5<S  
MS)#S&  
import org.rut.util.algorithm.SortUtil; J}Bg<[n  
ka0T|$ u(s  
/** 3J7TWOJVw  
* @author treeroot :_~UO^*h  
* @since 2006-2-2 {OL*E0  
* @version 1.0 u-=S_e  
*/ G|Yw a=  
public class SelectionSort implements SortUtil.Sort { nU-.a5  
H [wJ; l  
/* Qx1ZxJz #  
* (non-Javadoc) cpF\^[D  
* '>^+_|2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FVW<F(g`  
*/ [=z1~dXKb  
public void sort(int[] data) { 9OuK}Ssf  
int temp; KJo [!|.  
for (int i = 0; i < data.length; i++) { AU)"L_ i}  
int lowIndex = i; ~}q"M[{  
for (int j = data.length - 1; j > i; j--) { N)K};yMf  
if (data[j] < data[lowIndex]) { E ~<SEA  
lowIndex = j;  oJ ~ZzW  
} E3<jH  
} ,B(UkPGT  
SortUtil.swap(data,i,lowIndex); /J]Yj,  
} T;XEU%:LK  
} @s}I_@  
OB)Vk  
} S7N3L."  
,%w_E[2  
Shell排序: @Ck6s  
wj!p6D;;S  
package org.rut.util.algorithm.support; #O6SEK|Z  
@>,3l;\Zh  
import org.rut.util.algorithm.SortUtil; {a.{x+!5I-  
d8`^;T ;}d  
/** [cwc}f^  
* @author treeroot Q#wASd.  
* @since 2006-2-2 _iLXs  
* @version 1.0 X aW@CW  
*/ ~O;!y%  
public class ShellSort implements SortUtil.Sort{ Z $ Fh4  
>*(4evU  
/* (non-Javadoc) UK*+EEv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S5*wUd*p#  
*/  TOdH  
public void sort(int[] data) { .7++wo!,  
for(int i=data.length/2;i>2;i/=2){ O`~G'l&@T  
for(int j=0;j insertSort(data,j,i); ck>|p09q'9  
} 5V!L~#  
} TS^(<+'  
insertSort(data,0,1); jz QmYcd  
} m3 C&QdjRp  
JryDbGc8  
/** k!H;(B"s-  
* @param data /6B!& b2f  
* @param j @a#qq`b;  
* @param i $IX>o&S@|  
*/ QDYS}{A:V  
private void insertSort(int[] data, int start, int inc) { WCA`34(  
int temp; /Mb?dVwA  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =B4U~|k  
} {(]B{n  
} s Z(LT'}  
} 2hdi)C,7Y  
O Ul+es  
} N3g[,BE  
_m;0%]+  
快速排序: EKZ40z`  
?v PwI  
package org.rut.util.algorithm.support; EgM.wQHR]  
+Gqh  
import org.rut.util.algorithm.SortUtil; FiMP_ y*S  
"2;$?*hO#  
/** osyY+)G'sV  
* @author treeroot ,LKY?=T$z  
* @since 2006-2-2 YNA %/  
* @version 1.0 {\ [u2{  
*/ b2u_1P\  
public class QuickSort implements SortUtil.Sort{ "(5A 5>  
*q_ .y\D  
/* (non-Javadoc) FKY|xG9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yxz(g]  
*/ fp|!LU  
public void sort(int[] data) { dFD0l?0N  
quickSort(data,0,data.length-1); !^cQPX2<  
} ]^$&Ejpe#  
private void quickSort(int[] data,int i,int j){ =;!C7VS  
int pivotIndex=(i+j)/2; V9z/yNo  
file://swap wr,X@y%(!  
SortUtil.swap(data,pivotIndex,j); i`Fg kABw  
4N& VT"  
int k=partition(data,i-1,j,data[j]); |(N4ZmTm  
SortUtil.swap(data,k,j); dDbPM9]5  
if((k-i)>1) quickSort(data,i,k-1); 2LGeRw  
if((j-k)>1) quickSort(data,k+1,j); oRFHq>-.g  
>i7zV`eK  
} rD<G_%hP  
/** N(q%|h<Z/=  
* @param data 9:"%j  
* @param i He}qgE>Us  
* @param j 0M(\xO  
* @return }&sF \b  
*/ +RQlMAB  
private int partition(int[] data, int l, int r,int pivot) { -1d2Qed  
do{ Bi/=cI  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4]0|fi3}>  
SortUtil.swap(data,l,r); 5jD2%"YUV  
} J5h;~l!y  
while(l SortUtil.swap(data,l,r); -twV?~f  
return l; rU`#3}s  
} SjV;& 1Z/  
"& 'h\  
} cdVh_"[  
Ql&5fyW  
改进后的快速排序: Q4\EI=4P]  
QyQ&xgS  
package org.rut.util.algorithm.support; <iVn!P  
fiqeXE?E  
import org.rut.util.algorithm.SortUtil; U1G"T(;s:  
u!?cKZw  
/** 5xX*68]%  
* @author treeroot ^_ L'I%%[  
* @since 2006-2-2 ^M6xRkI  
* @version 1.0 NBZFIFO<  
*/ "- @{ )  
public class ImprovedQuickSort implements SortUtil.Sort { fa9c!xDt  
3Xyu`zS&   
private static int MAX_STACK_SIZE=4096; wR +C>  
private static int THRESHOLD=10; ' _Ij9{M  
/* (non-Javadoc) ukb2[mb*u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  +LeZjA[  
*/ @N,dA#  
public void sort(int[] data) { ]+\;pb}bq  
int[] stack=new int[MAX_STACK_SIZE]; ~6L\9B )  
z}&w7 O#   
int top=-1; VCfa<hn  
int pivot; 2Sbo7e  
int pivotIndex,l,r; B'"(qzE-kM  
xU+c?OLi  
stack[++top]=0; <|9s {z  
stack[++top]=data.length-1; `6;%HbP$W+  
>utm\!Gac  
while(top>0){ INqD(EG   
int j=stack[top--]; ZZk6 @C  
int i=stack[top--]; BS*IrH H  
[F{q.mZj  
pivotIndex=(i+j)/2; ee}&~%  
pivot=data[pivotIndex]; E uxD,(  
89ivyv;]U  
SortUtil.swap(data,pivotIndex,j); dlkxA^  
},G6IuH%  
file://partition D]n9+!Ec1f  
l=i-1; W,dqk=n  
r=j; s)X'PJ0&Bs  
do{ ``KimeA~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a[d6@!  
SortUtil.swap(data,l,r); l2Z!;Wm(  
} @)=\q`vV  
while(l SortUtil.swap(data,l,r); 7\I,;swo  
SortUtil.swap(data,l,j); /KGVMBifM  
I?c "\Fe  
if((l-i)>THRESHOLD){ kSj,Pl\NC  
stack[++top]=i; <yzgZXxIaS  
stack[++top]=l-1; |35"V3bs  
} a oj6/  
if((j-l)>THRESHOLD){ | LdDL953  
stack[++top]=l+1; zMlW)NB'  
stack[++top]=j; ~k>H4hV3  
} ? IgM=@  
KqC8ozup  
} '| (#^jAj  
file://new InsertSort().sort(data); Y&M}3H>E  
insertSort(data); fui;F"+1  
} yneIY-g(p  
/** 40,u(4.m*  
* @param data Mg3>/!  
*/ 2;X{ZLo  
private void insertSort(int[] data) { eT 8(O36%  
int temp; &("HH"!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5n,?&+*L  
} USBU?WDt  
} #nG?}*#  
} =(\ /+ 0-[  
klSzmi4M  
} vzDoF0Ts*p  
@BCws )  
归并排序: ~1e?9D  
Z,~Bz@5`"  
package org.rut.util.algorithm.support; T^FeahA7;  
 peW4J<,  
import org.rut.util.algorithm.SortUtil; >a;0<Ui&Q  
qy@v, a  
/** UC&f  
* @author treeroot D|m] ]B  
* @since 2006-2-2 4#D=+70'  
* @version 1.0 5-rG8  
*/ G-FeDP  
public class MergeSort implements SortUtil.Sort{ 5X"y46i,H  
ErZYPl  
/* (non-Javadoc) 3%`asCW$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +<qmVW^X  
*/ `Hj{XIOx  
public void sort(int[] data) { >IZ|:lsxE  
int[] temp=new int[data.length]; !<`}m E!:  
mergeSort(data,temp,0,data.length-1); l6o?(!:!%  
} ['1JN UX  
7-Bttv{  
private void mergeSort(int[] data,int[] temp,int l,int r){ < zUU`  
int mid=(l+r)/2; NlLgXn!  
if(l==r) return ; & !0[T   
mergeSort(data,temp,l,mid); B,rpc\_  
mergeSort(data,temp,mid+1,r); QN!.~>  
for(int i=l;i<=r;i++){ 1 /@lZ  
temp=data; yxv]G6  
} "^?|=sQ  
int i1=l; +-8u09-F  
int i2=mid+1; gN"Abc  
for(int cur=l;cur<=r;cur++){ `2}H$D  
if(i1==mid+1) s^O>PEX&<I  
data[cur]=temp[i2++]; E<=h6Ha  
else if(i2>r) i qLNX)  
data[cur]=temp[i1++]; 1E3'H7k\t  
else if(temp[i1] data[cur]=temp[i1++]; snU $Na3  
else & QO9/!  
data[cur]=temp[i2++]; ,UOAGu<_gb  
} sT&O%(  
} 8M9LY9C  
x[%z \  
} aX`@WXK  
24 )Sf  
改进后的归并排序: 2VSs#z!  
/m>%=_nz  
package org.rut.util.algorithm.support; !\e&7sV~Q  
_4!SO5T  
import org.rut.util.algorithm.SortUtil; \TchRSe  
}vzZWe  
/** v-^7oai  
* @author treeroot Gvo|uB#  
* @since 2006-2-2 D)0pm?*5A  
* @version 1.0 Iv J ;9d  
*/ 8|9JJ<G7  
public class ImprovedMergeSort implements SortUtil.Sort { c{X>i>l>  
Ojea~Y]Sr  
private static final int THRESHOLD = 10; |[%CFm}+?  
e G8Zn<:s  
/* RDFOUqS  
* (non-Javadoc) X9:4oMux7  
* g7>p,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p xj}%LH  
*/ s#f6qj  
public void sort(int[] data) { 7*{9 2_M  
int[] temp=new int[data.length]; H2EKr#(  
mergeSort(data,temp,0,data.length-1); c5KJ_Nfi  
} o>3g<- ul  
+A 3Q$1F  
private void mergeSort(int[] data, int[] temp, int l, int r) { [xaglZ9HNo  
int i, j, k; l~cT]Ep  
int mid = (l + r) / 2; ]t4 9Efw  
if (l == r) u<}PcI.  
return; ux8:   
if ((mid - l) >= THRESHOLD) D7'P^*4_B  
mergeSort(data, temp, l, mid); *ud"?{)Z  
else lQ t&K1m  
insertSort(data, l, mid - l + 1); jg,oGtRz  
if ((r - mid) > THRESHOLD) dV~yIxD}C*  
mergeSort(data, temp, mid + 1, r); T[$! ^WT  
else $s[DT!8N  
insertSort(data, mid + 1, r - mid); #zRT  
,F4 _ps?(  
for (i = l; i <= mid; i++) { qa|"kRCO  
temp = data; VW," dmC  
} 7mUpn:U  
for (j = 1; j <= r - mid; j++) { ZD)pdNX  
temp[r - j + 1] = data[j + mid]; /Dh[lgF0C  
} n_8wYiBs(  
int a = temp[l]; $ N7J:Q  
int b = temp[r]; rSGt`#E-s.  
for (i = l, j = r, k = l; k <= r; k++) { GQU9UXe  
if (a < b) { /.?m9O^ F  
data[k] = temp[i++]; DA0{s  
a = temp; OJ2O?Te8  
} else { K5oVB,z)  
data[k] = temp[j--]; FN-j@  
b = temp[j]; ]GSs{'Uh B  
} !'ylh8}  
} Ru1I,QvCj"  
} U}r^M( s!  
g{]C@,W  
/** uU7s4oJ|  
* @param data h`1{tu  
* @param l j|WuOZm\0  
* @param i |fQl0hL  
*/ CB7 6  
private void insertSort(int[] data, int start, int len) { Oyfc!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }!^/<|$=  
} 9/La _ :K  
} 7<'4WHi;@s  
} 3]*_*<D  
} 3`W=rIMli  
upD 2vtU  
堆排序: ;k<n}shD  
Hg~O0p}[  
package org.rut.util.algorithm.support; <G5d{rKZ  
. q=sC?D  
import org.rut.util.algorithm.SortUtil; /1h 0 l;  
!jV}sp<Xp  
/** RsY7F;  
* @author treeroot AbWnDqv  
* @since 2006-2-2 Pf?*bI  
* @version 1.0 `L-GI{EJ  
*/  P[l?  
public class HeapSort implements SortUtil.Sort{ 6$d3Ap@Gl  
]A;{D~X^w  
/* (non-Javadoc) ("UzMr,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o0f{ePZ=  
*/ G^Z SQ!  
public void sort(int[] data) { ZTq"SQ>ym  
MaxHeap h=new MaxHeap(); c4T8eTKU  
h.init(data); (x.O]8GKP  
for(int i=0;i h.remove(); (A6 -9g>  
System.arraycopy(h.queue,1,data,0,data.length); e``X6=rcG  
} 4h|48</  
]3+xJz~=  
private static class MaxHeap{ j'z}m+_?  
N*k`'T  
void init(int[] data){ GsYi/Z   
this.queue=new int[data.length+1]; ?5%0zMC  
for(int i=0;i queue[++size]=data; oZ)\Ya=  
fixUp(size); XT n`$}nz  
} v=(L>gg  
} UuNcBzB2d  
:HDl-8]Lw  
private int size=0; Nb))_+/  
LI>tN R~  
private int[] queue; ~S\Ee 2e>  
*?k~n9n5U  
public int get() { uC _&?  
return queue[1]; oGK 1D  
} JN9 W:X.  
7 TTU&7l~  
public void remove() { CC(At.dd  
SortUtil.swap(queue,1,size--); xB1Oh+@i  
fixDown(1); _x.!, g{  
} [OH9/ "  
file://fixdown t)y WQV  
private void fixDown(int k) { 1>JUI5 {  
int j; d+5KHfkK  
while ((j = k << 1) <= size) { !y8/El  
if (j < size %26amp;%26amp; queue[j] j++; l?+67cQLA  
if (queue[k]>queue[j]) file://不用交换 XJ3 5Z+M  
break; De^GWO.?bT  
SortUtil.swap(queue,j,k); kW v)+  
k = j; yq3i=RB(  
} [V\0P,l  
} ls(lL\  
private void fixUp(int k) { ~*Fbs! ;,  
while (k > 1) { CS:"F) at  
int j = k >> 1; |@J:A!  
if (queue[j]>queue[k]) RHV& m()Q  
break; {b|:q>Be8  
SortUtil.swap(queue,j,k); MEOVw[hO  
k = j; [")3c)OH|  
} `|p3@e  
} kIHfLwh9N  
B&l5yI b  
} L'1p]Z"  
QEl:>HG  
} IF<?TYy=3B  
D[.;-4"_  
SortUtil: {Z>OAR#   
X8TwMt  
package org.rut.util.algorithm; 8 |2QJ  
mL!)(Bb  
import org.rut.util.algorithm.support.BubbleSort; Q4gsOx P  
import org.rut.util.algorithm.support.HeapSort; +?xW%omy  
import org.rut.util.algorithm.support.ImprovedMergeSort;  ~ccwu  
import org.rut.util.algorithm.support.ImprovedQuickSort; gm**9]k^{  
import org.rut.util.algorithm.support.InsertSort; oW:p6d  
import org.rut.util.algorithm.support.MergeSort; L-7?:  
import org.rut.util.algorithm.support.QuickSort; )qGw!^8  
import org.rut.util.algorithm.support.SelectionSort; 67/&AiS?  
import org.rut.util.algorithm.support.ShellSort; <&n\)R4C1  
,a N8`M  
/** ;&|MNN^  
* @author treeroot gZ!vRO <%  
* @since 2006-2-2 d" T">Og)  
* @version 1.0 lyBae?%&  
*/ Q@]QPpe  
public class SortUtil { `0@onDQVc=  
public final static int INSERT = 1; /8Sg<  
public final static int BUBBLE = 2; fc'NU(70c  
public final static int SELECTION = 3; faqOGAb  
public final static int SHELL = 4; Z.a`S~U  
public final static int QUICK = 5; A}(&At%n4  
public final static int IMPROVED_QUICK = 6; \KlOj%s  
public final static int MERGE = 7; d ] J5c  
public final static int IMPROVED_MERGE = 8; y{>d&M|  
public final static int HEAP = 9; 5iE-$,7#L  
&|;XLRHP}  
public static void sort(int[] data) { 3h:"-{MW.  
sort(data, IMPROVED_QUICK); `lAe2l^  
} |sf&t  
private static String[] name={ c/fU0cA@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9,7IsT8  
}; ; ^waUJ\Z  
3)jFv7LAU  
private static Sort[] impl=new Sort[]{ w8!S;~xKI  
new InsertSort(), `|Aj3a3sND  
new BubbleSort(), ))y`q@  
new SelectionSort(), [O) Q\|k  
new ShellSort(), 9M3XHj  
new QuickSort(), F iZe4{(p  
new ImprovedQuickSort(), -YF]k}|  
new MergeSort(), ,>6s~'  
new ImprovedMergeSort(), &xK ln1z'  
new HeapSort() rJ2yi6TB\  
}; \'z&7;px  
*v+xKy#M  
public static String toString(int algorithm){ lTl-<E;  
return name[algorithm-1]; Czj]jA(0f  
} fq-zgqF<  
K-%x] Fp=  
public static void sort(int[] data, int algorithm) { Ns?8N":  
impl[algorithm-1].sort(data); ~b.C[s  
} {q=(x]C  
Wn61;kV_)  
public static interface Sort { C&Nga `J  
public void sort(int[] data); OEz'&))J  
} (9!$p|d*  
A*;I}F  
public static void swap(int[] data, int i, int j) { ya[][!.G  
int temp = data; MHh>~Y(h  
data = data[j]; ]njObU)[zr  
data[j] = temp; H7&>cM  
} 2=P.$Kx  
} jNKu5"HB  
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