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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。 mm$D1=h{|  
插入排序: i]GBu  
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package org.rut.util.algorithm.support; 4,9AoK)yp  
T(+F6d=1  
import org.rut.util.algorithm.SortUtil; ~l!(I-'?g  
/** (Br$(XJoK}  
* @author treeroot X@+:O-$  
* @since 2006-2-2 QxnP+U~N  
* @version 1.0 v,vTRrpK  
*/ fEs957$  
public class InsertSort implements SortUtil.Sort{ MIa].S#  
^FgNg'"[3  
/* (non-Javadoc) {+c/$4 <  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *p?b"{_a  
*/ S "oUE_>  
public void sort(int[] data) { `Q26Dk  
int temp; *" <tFQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dQM# -t4*  
} .u7d  
} rQ}4\PTi  
} B0p>'O2  
uW>AH@Pij  
} OpxVy _5,  
PkDL\Nqe  
冒泡排序: O RQGay  
1@)]+* F*z  
package org.rut.util.algorithm.support; 3JW9G04.  
ZfT%EPoZ:  
import org.rut.util.algorithm.SortUtil; w2]1ftY  
0nx <f>n  
/** \(T; @r  
* @author treeroot  >o.u,  
* @since 2006-2-2 #*S/Sh?Q  
* @version 1.0 s+zb[3}  
*/ JS(KCY9  
public class BubbleSort implements SortUtil.Sort{ ([f6\Pw\ <  
VPN@q<BV  
/* (non-Javadoc) z*yN*M6t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Jvw"=  
*/ XQj`KUO@  
public void sort(int[] data) { twgU ru  
int temp; =m}{g/Bk  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ULU ]k#  
if(data[j] SortUtil.swap(data,j,j-1); 0RoI`>j'  
} u x:,io  
} wCmwH=O  
} /2l4'Q=  
} Kjz,p^Y\  
uU5:,Wy+dg  
} &<_sXHg<x  
iZjvO`@[  
选择排序: ][G<CO`k  
_"WQi}Mm  
package org.rut.util.algorithm.support; `n^jU92  
qk_ s"}sS  
import org.rut.util.algorithm.SortUtil; bO2$0!=I  
k9^P#l@p  
/** [j93Mp  
* @author treeroot 0A 4(RLGg  
* @since 2006-2-2 f[|xp?ef  
* @version 1.0 TqQ>\h"&_  
*/ 0eQ5LG?)  
public class SelectionSort implements SortUtil.Sort { ORtl~V'  
|qI_9#M\(  
/* m7M*)N8  
* (non-Javadoc) WX0@H[$i#  
* y~- ?   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W 8E<P y  
*/ #mllVQ  
public void sort(int[] data) { vjXvjv{t  
int temp; ir]uFOj  
for (int i = 0; i < data.length; i++) { R4IFl z  
int lowIndex = i; xY!]eLZ)&  
for (int j = data.length - 1; j > i; j--) { 3I"&Qp%2  
if (data[j] < data[lowIndex]) { K] Eq"3  
lowIndex = j; sS-5W-&P{T  
} c&0IJ7fZG  
} Pi8U}lG;  
SortUtil.swap(data,i,lowIndex); gpw(j0/Fs  
} /u #9M {  
} B1LnuB%  
8|d[45*q  
} 4yBe(&N-d  
Qy6Avw/$  
Shell排序: ,%KB\;1mn'  
}*R" yp  
package org.rut.util.algorithm.support; :m37Fpz&b  
8tdUnh%/  
import org.rut.util.algorithm.SortUtil; "%.#/!RG  
3}h&/KN{  
/** a#raUF7e  
* @author treeroot 8AefgjE  
* @since 2006-2-2 ]AHUo;(f%  
* @version 1.0 J|'T2g  
*/ <c\aZ9+V  
public class ShellSort implements SortUtil.Sort{ _puQX@i  
gsU&}R1*h  
/* (non-Javadoc) e,4!/|H:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D6ck1pxkx  
*/ Mb<KZ_wYOX  
public void sort(int[] data) { N`zHe*=[~  
for(int i=data.length/2;i>2;i/=2){ g:2/!tujL  
for(int j=0;j insertSort(data,j,i); mB1)!  
} rBny*!n  
} BR0bf5T/  
insertSort(data,0,1); 9s7B1Pf  
} Pu9.Uwx  
XkK16aLE  
/** xE)pj|  
* @param data KX9ZwsC0  
* @param j /4T%&#6s  
* @param i ?v")Z 0 ~  
*/ 94a _ W9  
private void insertSort(int[] data, int start, int inc) { 3aDma/  
int temp; |2oB3 \)/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [ 0~qs|27  
} >K &b,o,[  
} '.dW>7  
} sP+S86 u  
:JN3@NsK  
} /NkZ;<uxJ  
Iy,)>V%iZV  
快速排序: D^TKv;%d  
_n_i*p '2  
package org.rut.util.algorithm.support; F_21`Hj  
o3W5FHFAv  
import org.rut.util.algorithm.SortUtil; 8bK}& *z<  
'PO1{&M  
/** 4o=G) KO{  
* @author treeroot t6"4+:c!>  
* @since 2006-2-2 t*<c+Ixu  
* @version 1.0 'rF TtT  
*/ 6 XG+YIG6w  
public class QuickSort implements SortUtil.Sort{ -[7.VP   
p5 [uVRZ  
/* (non-Javadoc) -!}1{   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1u` Z?S(  
*/ S\X_!|  
public void sort(int[] data) { $jzk4V  
quickSort(data,0,data.length-1); u(~s$ENl  
} ,J~1~fg89  
private void quickSort(int[] data,int i,int j){ Bo0y"W[+  
int pivotIndex=(i+j)/2; $`5DGy?RU  
file://swap xj~6,;83xR  
SortUtil.swap(data,pivotIndex,j); WkO .  
I3L1|!  
int k=partition(data,i-1,j,data[j]); x[?_F  
SortUtil.swap(data,k,j); stDn{x .  
if((k-i)>1) quickSort(data,i,k-1); ::5-UxGL<2  
if((j-k)>1) quickSort(data,k+1,j); \GWq0z&  
+ X ?jf.4  
} `C()H@;  
/** gTq-\k(  
* @param data +amvQ];?Q8  
* @param i awawq9)Y  
* @param j O@$hG8:  
* @return ^Uf`w7"iY  
*/ O7K))w  
private int partition(int[] data, int l, int r,int pivot) { vd ;wQ  
do{ IR>K ka(B  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "E8!{  
SortUtil.swap(data,l,r); LNg1q1 P3  
} K)14v;@  
while(l SortUtil.swap(data,l,r); <AIsNqr  
return l; cK258mY  
} NMDNls&)k  
O]Hg4">f  
} ?y '.sQ  
vbFAS:Y:+  
改进后的快速排序: ~ 52  
i3GvTg-X  
package org.rut.util.algorithm.support; ;'Y?wH[  
-@73"w/  
import org.rut.util.algorithm.SortUtil; cn#a/Hx  
yO($KL +  
/** Z5U~g?  
* @author treeroot PY2`RZ/@  
* @since 2006-2-2 9w(j2i q  
* @version 1.0 >YW>=5_  
*/ -`;8~wMN  
public class ImprovedQuickSort implements SortUtil.Sort { _+. t7q^  
u,pm\  
private static int MAX_STACK_SIZE=4096; {NFeX'5bP  
private static int THRESHOLD=10; y, Z#? O  
/* (non-Javadoc) =#u2Rx%V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h1Lp:@:|  
*/ \uYUX~}i"  
public void sort(int[] data) { >hhd9  
int[] stack=new int[MAX_STACK_SIZE]; Uyh   
^U =`Rx  
int top=-1; ! Q#b4f  
int pivot; l:ED_env:  
int pivotIndex,l,r; _5)#{ o<  
M{S7ia"s  
stack[++top]=0; 0{ ,zE  
stack[++top]=data.length-1; s%:fB(  
y >OZ<!`  
while(top>0){ MPB6  
int j=stack[top--]; zZxP= c  
int i=stack[top--]; T'V(%\w  
]`NbNr]K  
pivotIndex=(i+j)/2; *Z]| Z4Q/`  
pivot=data[pivotIndex]; GWhZ Mj  
Z:*U/_G  
SortUtil.swap(data,pivotIndex,j); aw 7f$Fqk  
 ZBXGu f  
file://partition lfA  BF  
l=i-1; sV6A& Aw  
r=j; e!8_3BE  
do{ <_>6a7ra  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); J'EK5=H  
SortUtil.swap(data,l,r); :}-u`K*  
} g IKm  
while(l SortUtil.swap(data,l,r); W wE)XE  
SortUtil.swap(data,l,j); K8 Y/XEK  
@}Ixr{t  
if((l-i)>THRESHOLD){ q+z\Y?  
stack[++top]=i; ""+*Gn 7^8  
stack[++top]=l-1; zJ:r0Bt  
} \,EPsQV0?  
if((j-l)>THRESHOLD){ B#MW`7c  
stack[++top]=l+1; rrWk&;?  
stack[++top]=j; l!  y _P  
} 5%`Ul  
"6d bRo5%  
} }^<zVdwp  
file://new InsertSort().sort(data); :U q]~e  
insertSort(data); h%s  
} Ltw7b  
/** l{U3;  
* @param data 4sQAR6_SW~  
*/ Zsogx}i-  
private void insertSort(int[] data) { `Cf en8  
int temp; 5ecz'eA%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h /QP=Zd  
} uq%3;#[0  
} t"p#ii a  
} .^S78hr]n  
BznA)EK?@  
} kV3j}C"  
S1`0d9ds#  
归并排序: UMwMXmZNJ  
GKhwn&qCKb  
package org.rut.util.algorithm.support; t)Q @sKT6  
yn[ZN-H~  
import org.rut.util.algorithm.SortUtil; 5{0>7c|.  
AdW2o|Uap  
/** Mgs|*u-5  
* @author treeroot Ww&- `.  
* @since 2006-2-2 Ju7C?)x  
* @version 1.0 #(+HSZm  
*/ r_,m\'~s !  
public class MergeSort implements SortUtil.Sort{ fsc~$^.~\  
(+8xUc(w  
/* (non-Javadoc) rY?F6'}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #K1BJ#KUt  
*/ : KP'xf.  
public void sort(int[] data) { 62l0 Z-  
int[] temp=new int[data.length]; {&E Z>r-  
mergeSort(data,temp,0,data.length-1); FT/5 _1i  
} if[o?6U4t  
>_aio4j}r  
private void mergeSort(int[] data,int[] temp,int l,int r){ EKd3$(^   
int mid=(l+r)/2; kad;Wa#h  
if(l==r) return ; k?/vy9  
mergeSort(data,temp,l,mid); #O9*$eMw  
mergeSort(data,temp,mid+1,r); Ym.l@(  
for(int i=l;i<=r;i++){ (d'j'U:C  
temp=data; Dyk[u g5  
} -)O kG#J@  
int i1=l; b;J0'o^G|  
int i2=mid+1; )ehB)X  
for(int cur=l;cur<=r;cur++){ 5\w=(c9A  
if(i1==mid+1) ]fADaw-R  
data[cur]=temp[i2++]; Z0ncN])  
else if(i2>r) #A/]Vs$  
data[cur]=temp[i1++]; t&9as}  
else if(temp[i1] data[cur]=temp[i1++]; [%84L@:h  
else %g0z) J  
data[cur]=temp[i2++]; #x5N{8  
} w38c  
} [CDXCV-z  
[7e{=\`=  
} ikY]8BCc  
iRUR4Zs  
改进后的归并排序: C~KWH@  
xQ#Akd=  
package org.rut.util.algorithm.support; (9KDtr*(2i  
=(.mf  
import org.rut.util.algorithm.SortUtil; ;c X^8;F0  
c8-69hb?  
/** sWsG,v_  
* @author treeroot ;<kZfx  
* @since 2006-2-2 A3MZxu=':3  
* @version 1.0 I mPu}  
*/ hY.e[+  
public class ImprovedMergeSort implements SortUtil.Sort { c?.r"5#  
Q7 uAf3  
private static final int THRESHOLD = 10; GJC!0{8;  
lrs0^@.+  
/* =mKfFeO.  
* (non-Javadoc) YN%=Oq  
* 3?.1~"-J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R=vbUA  
*/ ~aJW"\{  
public void sort(int[] data) { fiE>H~  
int[] temp=new int[data.length]; `1fJ:b/M  
mergeSort(data,temp,0,data.length-1); p}YI#f in/  
} &/ >;LgN  
Q7~'![(a  
private void mergeSort(int[] data, int[] temp, int l, int r) { z(g%ue\  
int i, j, k; :DtZ8$I`]C  
int mid = (l + r) / 2; ^))PCn_zb  
if (l == r) r5MxjuOB1  
return; .'t (-eT,  
if ((mid - l) >= THRESHOLD) FOOQ'o[}  
mergeSort(data, temp, l, mid); IL~]m?'V(  
else jo9J%vo  
insertSort(data, l, mid - l + 1); <|{L[  
if ((r - mid) > THRESHOLD) y z[%MXI  
mergeSort(data, temp, mid + 1, r); FU_fCL8yA  
else LP.HS'M~u  
insertSort(data, mid + 1, r - mid); *j|/2+pq  
o3Mf:;2cC  
for (i = l; i <= mid; i++) { ,>D ja59  
temp = data; )l`1)Ea~  
} YV5Yx-+3w$  
for (j = 1; j <= r - mid; j++) { N]B)Fb  
temp[r - j + 1] = data[j + mid]; @ SU8\:(U  
} Yo>`h2C4  
int a = temp[l]; OENzG~  
int b = temp[r]; >vUB%OLyP  
for (i = l, j = r, k = l; k <= r; k++) { >%-Hj6%  
if (a < b) { PeO]lq  
data[k] = temp[i++]; C">`' G2  
a = temp; h,^BC^VU9-  
} else { 8]S,u:E:N  
data[k] = temp[j--]; _b>F#nD,'%  
b = temp[j]; ZB-QABn  
} }7K@e;YUg  
} {}V$`L8  
} O/mR9[}  
n'T He|:I  
/** ~|h lE z  
* @param data b)N[[sOt  
* @param l xpF](>LC(  
* @param i .:rmA8U[  
*/ b3}Q#Y\G  
private void insertSort(int[] data, int start, int len) { X4a^m w\"  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }i(qt&U;  
} 5?Bc Y ;  
} zG_p"Z7,  
} _}D%iJg#  
} KE<kj$  
.Y;b)]@f  
堆排序: T'E ] i!$  
2+z1h^)W  
package org.rut.util.algorithm.support; )B6# A0  
N#4N?BBP"  
import org.rut.util.algorithm.SortUtil; .jA\f:u#  
pV7N byb4  
/** B@ {&<  
* @author treeroot ^-hErsK  
* @since 2006-2-2 /t*YDWLg  
* @version 1.0 )n( Q  
*/ &R,9+c  
public class HeapSort implements SortUtil.Sort{ `?"6l5d.]  
 ;\qXbL7  
/* (non-Javadoc)  Hy]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `N}d}O8   
*/ y%S})9  
public void sort(int[] data) { *t(4 $  
MaxHeap h=new MaxHeap(); Mu{BUtkzG  
h.init(data); :'}@Al9=>  
for(int i=0;i h.remove(); 'Dath>Y=  
System.arraycopy(h.queue,1,data,0,data.length); }$&xTW_  
} 9cG<hX9`F  
yzR=A%V8A  
private static class MaxHeap{ id?"PD"%  
?iv=53<c#  
void init(int[] data){ :HRT 2I  
this.queue=new int[data.length+1]; y(5:}x&E  
for(int i=0;i queue[++size]=data; jZd}O C<  
fixUp(size); n *<v]1  
} 1oty*c  
} xzm@ v(  
)6-9)pH@)  
private int size=0; [ ny6W9  
ZSB?Y 1wG  
private int[] queue; l+zb~  
71"+<C .  
public int get() { ]a?bzOr,  
return queue[1]; $shp(T,q  
} j+kC-U;  
8md*wEjk  
public void remove() { &^!h}D%T/  
SortUtil.swap(queue,1,size--); 8AL\ST51x"  
fixDown(1); 6ZOy&fd,Ty  
} Mzkkc QLK  
file://fixdown bcH_V| 5}  
private void fixDown(int k) { U]R~gy}#  
int j; Zgamd1DJ[l  
while ((j = k << 1) <= size) { T2=HG Z  
if (j < size %26amp;%26amp; queue[j] j++; s_[VHPN  
if (queue[k]>queue[j]) file://不用交换 DMn4ll|  
break; $ 4m*kQ  
SortUtil.swap(queue,j,k); $SY]fNJQ  
k = j; I4t*?  
} @MbVWiv  
} fThgK;Qy'U  
private void fixUp(int k) { `VT>M@i/  
while (k > 1) { |^a;77nE_^  
int j = k >> 1; _mJG5(|  
if (queue[j]>queue[k]) o6a0'vU><  
break; !yJICjXj  
SortUtil.swap(queue,j,k); wRvb8F 0  
k = j; 3@<zg1.9-  
} 0N;%2=2_E  
} DHw<%Z-J  
Kz?#C  
} s{}]D{bc  
@Jn!0Y1_3  
} 7TX2&kMoc  
xZ.!d.rn  
SortUtil: np9dM  
MYdO jcN  
package org.rut.util.algorithm; b5a.go  
q7\Ovjs0  
import org.rut.util.algorithm.support.BubbleSort; F<|t\KOW  
import org.rut.util.algorithm.support.HeapSort; Yh<WA>=  
import org.rut.util.algorithm.support.ImprovedMergeSort; -_N)E ))G  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;9a 6pz<  
import org.rut.util.algorithm.support.InsertSort; = QO g 6  
import org.rut.util.algorithm.support.MergeSort; 5(m(xo6  
import org.rut.util.algorithm.support.QuickSort; `yiC=$*[  
import org.rut.util.algorithm.support.SelectionSort; |~0UM$OB^3  
import org.rut.util.algorithm.support.ShellSort; E4z)Mr#  
sG7u}r  
/** <vV_%uo M  
* @author treeroot aYn^)6^  
* @since 2006-2-2 :-T*gqj|  
* @version 1.0 -NJ!g/ >mM  
*/ 7[pBUDA  
public class SortUtil { neZ.`"LV  
public final static int INSERT = 1; $IQw=w7 p  
public final static int BUBBLE = 2; U/ od~29  
public final static int SELECTION = 3; fmX!6Kv  
public final static int SHELL = 4; r6Aneg7  
public final static int QUICK = 5; 6gL-OJNo  
public final static int IMPROVED_QUICK = 6; T{v>-xBRy  
public final static int MERGE = 7; w_tJ7pz8T  
public final static int IMPROVED_MERGE = 8; (Z] HX@"{J  
public final static int HEAP = 9; Kn`M4 O  
\M<3}t  
public static void sort(int[] data) { 4T6 {Y  
sort(data, IMPROVED_QUICK); IxZb$h[  
} I:cg}JZ>|  
private static String[] name={ i1lBto[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S$,'Q^~K  
}; u\yVR$pQ  
w;6bD'.>;  
private static Sort[] impl=new Sort[]{ yLE7>48  
new InsertSort(), w>; L{  
new BubbleSort(), W-Hoyn>?2  
new SelectionSort(), )kXhtjOl|  
new ShellSort(), dt@P>rel  
new QuickSort(), {i0SS  
new ImprovedQuickSort(), ]:M0Kj&h  
new MergeSort(), : rMM4  
new ImprovedMergeSort(), MRNNG6TUs  
new HeapSort() ED>prE0  
}; 9;.(u'y|  
D\dWt1n  
public static String toString(int algorithm){ b;sVls  
return name[algorithm-1]; :KJ pk:<  
} \NZIEu)5?  
u$#Wv2|mk  
public static void sort(int[] data, int algorithm) { JF&$t}  
impl[algorithm-1].sort(data); `]Fx.)C#  
} g[RI.&?  
^hNgm.I  
public static interface Sort { C?v[Z]t  
public void sort(int[] data); g9D^)V  
} wI]"U2L5  
,mhQ"\+C  
public static void swap(int[] data, int i, int j) { O/AaYA&  
int temp = data; 9EDfd NN  
data = data[j]; JWvjWY2+P  
data[j] = temp; F'jWV5"*  
} C2LL|jp*  
} eAv4FA4g  
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