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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。 o6Jhl8  
插入排序: kIwq%c;  
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package org.rut.util.algorithm.support; F>lM[Lu#  
7RZ HU+  
import org.rut.util.algorithm.SortUtil; 5 !Ho[  
/** ?l>Ra0  
* @author treeroot D_)N!,i  
* @since 2006-2-2 !(8) '<t9  
* @version 1.0 3 n3$?oV  
*/ Xf%vfAf  
public class InsertSort implements SortUtil.Sort{ $No^\.mV  
>*]dB|2  
/* (non-Javadoc) yE_T#FN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UY}EW`$#m  
*/ VYw<8AEFY  
public void sort(int[] data) { k((kx:  
int temp; 0 H0U%x8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1/tyne=m  
} '(fzznRH  
} "%rzL.</  
} w/, A@fLL  
8I]rC<O6:  
} VoC|z Rd_  
6c[Slq!KA  
冒泡排序: ZU68\cL  
Q79WGW  
package org.rut.util.algorithm.support; 8JojKH  
+|6E~#zklY  
import org.rut.util.algorithm.SortUtil; }Dx5W9Ri"  
fJK;[*&Y  
/** #9rCF 3P  
* @author treeroot #B6$ r/%  
* @since 2006-2-2 +#Ga} e CM  
* @version 1.0 KSve_CBOh  
*/ ufB9\yl{~  
public class BubbleSort implements SortUtil.Sort{ 2UeK%-~W?  
Xk?Y  
/* (non-Javadoc) XES$V15  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qNX+!Y}y  
*/ J 7HOSFwXn  
public void sort(int[] data) { RHu4cK!5  
int temp; RH^; M-'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Im"8+756  
if(data[j] SortUtil.swap(data,j,j-1); Fgw$;W  
} >>T,M@s-:  
} nU23D@l  
} B,4 3b O  
} ,E &W{b  
MZ:Ty,pw:O  
} lGXr-K?+Y  
lFV\Go  
选择排序: Sd *7jW?  
1B`JvNtd  
package org.rut.util.algorithm.support; ^%t{:\  
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import org.rut.util.algorithm.SortUtil; ^0(`:*  
q rF:=?`E  
/** ; ]VLA9dC  
* @author treeroot bC,SE*F\  
* @since 2006-2-2 +HF*X~},i  
* @version 1.0 }_fVv{D   
*/ 4Ix~Feuph  
public class SelectionSort implements SortUtil.Sort { )(h<vo)-zX  
H)pB{W/  
/* V>"N VRY  
* (non-Javadoc) )VeeAu)p  
* L"'L@ A|U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EASN#VG  
*/ @N6KZn |R  
public void sort(int[] data) { nnuJY$O;M  
int temp; b8h6fB:2  
for (int i = 0; i < data.length; i++) { ~EO=;a_  
int lowIndex = i; iUk#0 I  
for (int j = data.length - 1; j > i; j--) { "Xj>dB1~  
if (data[j] < data[lowIndex]) { = /kT|  
lowIndex = j; CA3`Ee+rD  
} 6#Bg99c  
} tg;AF<VI  
SortUtil.swap(data,i,lowIndex); 7 aN}l QM  
} v03 ^  
} ;5:3 =F>ao  
BFPy~5W  
} Tl S 904'  
N#8$pE  
Shell排序: +K61-Div  
GC)xQZU)s  
package org.rut.util.algorithm.support; P`y 0FKS  
*]e 9/f  
import org.rut.util.algorithm.SortUtil; `r+`vJ$  
]64?S0p1c!  
/** p;rT#R&6>  
* @author treeroot EoOwu-{  
* @since 2006-2-2 24I~{Qy  
* @version 1.0 yG:Pg MrB  
*/ 18JAca8Zs  
public class ShellSort implements SortUtil.Sort{ r(Y@;  
+.|8W!h`1  
/* (non-Javadoc) lt|UehJ F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 84y#L[  
*/ 2KQpmNN  
public void sort(int[] data) { u<nPJeE  
for(int i=data.length/2;i>2;i/=2){ p 4Y 2AQ9  
for(int j=0;j insertSort(data,j,i); q&V=A[<rz  
} c59l/qoz  
} d~w}{LR[1  
insertSort(data,0,1); vL Qh r&I  
} R|K#nh  
)5l9!1j  
/** QO3QR/Ww  
* @param data g({dD;  
* @param j *!u a?  
* @param i K2ry@haN  
*/ 8p.O rdp  
private void insertSort(int[] data, int start, int inc) { "uD^1'IW2  
int temp; Zl7m:b2M  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _.BX#BIF  
} QE~#eo  
} wIK&EGQ  
} T^.W'  
`YPNVm<3)  
} vY(xH>Fd  
qh 9Ix  
快速排序: Z{ b($po  
?iaD;:'qE  
package org.rut.util.algorithm.support; gf U!sYZ  
Hh0a\%!  
import org.rut.util.algorithm.SortUtil; |d=MX>i|G  
APY*SeI V  
/** j:J{m0  
* @author treeroot bId@V[9  
* @since 2006-2-2 P:2 0i*QU  
* @version 1.0 ewv[nJD$  
*/ 5E}~iC&  
public class QuickSort implements SortUtil.Sort{ a*nx2d  
(ZHEPN  
/* (non-Javadoc) ?o.Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &#qy:  
*/ Zn"1qLPF  
public void sort(int[] data) { \!,qXfTMB  
quickSort(data,0,data.length-1); 3NC-)S  
} (f?&zQ!+  
private void quickSort(int[] data,int i,int j){ $K*&Wdo  
int pivotIndex=(i+j)/2; tJ@5E^'4  
file://swap exL<cN  
SortUtil.swap(data,pivotIndex,j); |csR"DOqz  
mdPEF)-  
int k=partition(data,i-1,j,data[j]); -<.b3Mh  
SortUtil.swap(data,k,j); mqb6MnK -  
if((k-i)>1) quickSort(data,i,k-1); e$y VV#  
if((j-k)>1) quickSort(data,k+1,j); ~$Pz`amT|  
{;XO'  
} aC=D_JJ\  
/** ^PI8Bvs>j  
* @param data :,BKB*a\  
* @param i l*z.20^P  
* @param j >6"u{Qmr  
* @return q$ 6Tb  
*/ J\x.:=V  
private int partition(int[] data, int l, int r,int pivot) { WZJ}HHePr  
do{ I:G4i}mA  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); L/n?1'he  
SortUtil.swap(data,l,r); 2q ,> *B?  
} #iAEcC0k5  
while(l SortUtil.swap(data,l,r); Wf>scl `s  
return l; C"!k`i=Lj  
} XB'PEvh8  
sZ9VXnz24  
} )I`Ma6bX  
01" b9`jU  
改进后的快速排序: Zjx:1c= b  
\%+5p"Z<  
package org.rut.util.algorithm.support; uRfFPOYH  
d y^zOqc  
import org.rut.util.algorithm.SortUtil; _}(ej&'f  
o7;#B)jWS  
/** jsOid5bs  
* @author treeroot =vZF/r  
* @since 2006-2-2 jjrhl  
* @version 1.0 amH..D7_>  
*/ q:/<^|  
public class ImprovedQuickSort implements SortUtil.Sort { wio}<Y6Xz  
.y~vn[qN  
private static int MAX_STACK_SIZE=4096; ;VAHgIpx;  
private static int THRESHOLD=10; zwa%$U  
/* (non-Javadoc) K6l{wyMb|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~t-!{F  
*/ Vy7o}z`  
public void sort(int[] data) { eAD uk!Iq  
int[] stack=new int[MAX_STACK_SIZE]; j"c30AY  
@?r[ $Ea1M  
int top=-1;  N\9 Wxz$  
int pivot; <|MF\D'  
int pivotIndex,l,r; QZs ]'*=#  
a{FCg%vD)  
stack[++top]=0; =~f\m:Y  
stack[++top]=data.length-1; }hy, }2(8  
 F6\Hqv  
while(top>0){ QFtf.")[.  
int j=stack[top--]; <4|/AF*>  
int i=stack[top--]; oX #WT  
w( ^  
pivotIndex=(i+j)/2; wfXm(RYM  
pivot=data[pivotIndex];  nW*D  
E'O[E=  
SortUtil.swap(data,pivotIndex,j); zZax![Z  
t+?m<h6w;l  
file://partition 7A mnxFC  
l=i-1; 9Oe~e  
r=j; q/lQEfR  
do{ ?' :v): J}  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); awic9 uMH  
SortUtil.swap(data,l,r); BQ7p<{G  
} H ]x-s  
while(l SortUtil.swap(data,l,r); /$ :w8  
SortUtil.swap(data,l,j); )Z0bMO<  
yxx'g+D*  
if((l-i)>THRESHOLD){ GF=rGn@,)`  
stack[++top]=i; B3V;  
stack[++top]=l-1; HDY2<Hzc  
} EDf"1b{PX  
if((j-l)>THRESHOLD){ 0;V "64U  
stack[++top]=l+1; / !@@  
stack[++top]=j; 9$[PA jwk  
} L" GQ Q  
=W_Pph  
} k:qS'  
file://new InsertSort().sort(data); G (o9*m1  
insertSort(data); %HAforH  
} V6ICR{y<3  
/** 4fyds< f  
* @param data 8*iIJ  
*/ UTLuzm  
private void insertSort(int[] data) { &xYO6_.  
int temp; #NZ#G~oeO  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^.|P&f~  
} "h'+!2mf  
} w 4fz!l]  
} P< 5v\\  
`UK'IN.il  
} ]9P2v X   
z?DI4 O#Up  
归并排序: ^.HvuG},O  
OkV*,n  
package org.rut.util.algorithm.support; 3Hd~mfO\  
&{uj3s&C   
import org.rut.util.algorithm.SortUtil; U7do,jCoa  
hRwj-N%C  
/** MoX~ZewWR  
* @author treeroot -+ha4JOB  
* @since 2006-2-2 ,ut-Di=6  
* @version 1.0 CVt:tV  
*/ ^tTASK  
public class MergeSort implements SortUtil.Sort{ Nr,Q u8  
cM hBOm*  
/* (non-Javadoc) E;tEmGf6F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y2{uEbA  
*/ !jTtMx  
public void sort(int[] data) { [  ^S(SPL  
int[] temp=new int[data.length]; :2zga=)g  
mergeSort(data,temp,0,data.length-1); BH"OphE  
} h%%ryQQ&<  
J6[V7R[\  
private void mergeSort(int[] data,int[] temp,int l,int r){ pv[Gg^  
int mid=(l+r)/2; !Soz??~o/  
if(l==r) return ; Q_r}cL/A  
mergeSort(data,temp,l,mid); Db`SNk=  
mergeSort(data,temp,mid+1,r); A+w'quXn  
for(int i=l;i<=r;i++){ }B e;YIhG  
temp=data; h0O t>e"  
} MfA@)v  
int i1=l; /Bw <?:  
int i2=mid+1; q)j_QbW)  
for(int cur=l;cur<=r;cur++){ TKe\Bi  
if(i1==mid+1) :*} -,{uX  
data[cur]=temp[i2++]; \]8 F_K  
else if(i2>r) v8} vk]b  
data[cur]=temp[i1++]; .sCj3sX*  
else if(temp[i1] data[cur]=temp[i1++]; VtN1 [}  
else \'Q rJ ?D  
data[cur]=temp[i2++]; CBr(a'3{Z  
} 3%[;nhbA7  
} SNJSRqWL/  
dM=45$\q  
} J6I:UML  
[} zzG@g,J  
改进后的归并排序: kz\Ss|jl  
\47djmG-  
package org.rut.util.algorithm.support; lHUd<kEC  
YO'aX  
import org.rut.util.algorithm.SortUtil; bEKhU\@=J  
Lc#GBaJ  
/** 2{Y~jYt{h  
* @author treeroot z?^oy.  
* @since 2006-2-2 re~T,PPM  
* @version 1.0 ZfMs6`Wv 1  
*/ KTq+JT u  
public class ImprovedMergeSort implements SortUtil.Sort { 6Hp+?mmh  
>t_h/:JZ)  
private static final int THRESHOLD = 10; "2~L  
_70Z1_ ;  
/* @V&c=8) 8  
* (non-Javadoc) g\% Z+Dc  
* AU1U?En  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E|vXM"zFl  
*/ [=BccT:b  
public void sort(int[] data) { ,gpZz$Ef(  
int[] temp=new int[data.length]; rJ)j./c  
mergeSort(data,temp,0,data.length-1); ZZn$N-  
} BW:HKH.k  
Kh$Q9$  
private void mergeSort(int[] data, int[] temp, int l, int r) { Y b=77(Q V  
int i, j, k; 3=Q:{  
int mid = (l + r) / 2; =%B5TBG  
if (l == r) 6_s(Kx>j  
return; |M&4[ka}  
if ((mid - l) >= THRESHOLD) 3K=%I+G(4  
mergeSort(data, temp, l, mid); p0[+Zm{#l  
else K9{RU4<  
insertSort(data, l, mid - l + 1); H$+@O-  
if ((r - mid) > THRESHOLD) <D[0mi0  
mergeSort(data, temp, mid + 1, r); ]OtnekkK$  
else ]"&](e6*  
insertSort(data, mid + 1, r - mid); Mg~4) DW]  
yQ)&u+r  
for (i = l; i <= mid; i++) { A;<wv>T  
temp = data; gYCr,-_i  
} 31~nay15  
for (j = 1; j <= r - mid; j++) { 9Pb6Z}  
temp[r - j + 1] = data[j + mid]; L#",.x  
} : r(dMU3%  
int a = temp[l]; <5? pa3  
int b = temp[r]; o_1N "o%  
for (i = l, j = r, k = l; k <= r; k++) { $g^D1zkuDT  
if (a < b) { "[eH|z/  
data[k] = temp[i++]; Z5E; FGPb  
a = temp; WfD fj  
} else { EV?U !O  
data[k] = temp[j--]; T](}jQxj`  
b = temp[j]; R G*Vdom  
} $AT@r"  
} o] Xt2E  
} ?ac4GA(  
Vr|e(e.%  
/** u&w})`+u5  
* @param data "M, 1ElQ  
* @param l $~S~pvT  
* @param i ~nTj't2R  
*/ kU+|QBA@  
private void insertSort(int[] data, int start, int len) { Zwm/c]6`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W#%s0EN<_  
} f1]zsn:  
} @0 'U p  
} 9vz\R-un  
} EJ>&\Iq  
fZezDm(Q  
堆排序: qi B~  
D#G%WT/"  
package org.rut.util.algorithm.support; >{N}UNZ$}  
c:.~%AJx  
import org.rut.util.algorithm.SortUtil; ^nK<t?KS  
FJDE48Vi  
/** <sw@P":F  
* @author treeroot {"+M%%`*#  
* @since 2006-2-2 +U1 Ir5Lx  
* @version 1.0 MoE&)~0u&  
*/ tEL9hZzI  
public class HeapSort implements SortUtil.Sort{ veHe   
w`;HwK$ ,  
/* (non-Javadoc) fz\Q>u'T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UXlZI'|He  
*/ *I)J%#  
public void sort(int[] data) { uN:KivVe  
MaxHeap h=new MaxHeap(); HeO:=OE~>  
h.init(data);  kDE-GX"Y  
for(int i=0;i h.remove(); ~\mh\a&  
System.arraycopy(h.queue,1,data,0,data.length); i1|>JM[V  
} .G8>UXX  
K J\kR  
private static class MaxHeap{ 6q\*{_CPB  
 v&|65[<  
void init(int[] data){ `Bw]PO  
this.queue=new int[data.length+1]; "bIb?e2h9G  
for(int i=0;i queue[++size]=data; X+C*+k,z  
fixUp(size); a8f#q]TyQ  
} ~g\~x  
} rNR7}o~qo  
&yvvea]  
private int size=0; F)(^c  
!JDr58  
private int[] queue; ;U|(rM;  
$uZmIu9Bi+  
public int get() { `R$i|,9 )  
return queue[1]; Vw1>d+<~-)  
} }! EVf  
dgjK\pH`h  
public void remove() { Cjx4vP  
SortUtil.swap(queue,1,size--); ;NR|Hi]  
fixDown(1); A<ds+0  
} *qwN9b/!  
file://fixdown Qz,2PO  
private void fixDown(int k) { c1"wS*u  
int j; &h0LWPl  
while ((j = k << 1) <= size) { -;7xUNQ  
if (j < size %26amp;%26amp; queue[j] j++; "_q~S$i^  
if (queue[k]>queue[j]) file://不用交换  SvT0%2  
break; 1o`1W4Q  
SortUtil.swap(queue,j,k); E ?Mgbd3  
k = j; I&{T 4.B:U  
} s`jlE|jtN  
} n.&7lg^X  
private void fixUp(int k) { SO=gG 2E  
while (k > 1) {  xgcxA:  
int j = k >> 1; Cgx:6TRS  
if (queue[j]>queue[k]) &{V|%u}v  
break; gS5REC4I/  
SortUtil.swap(queue,j,k); !?nO0Ao-$  
k = j; KClkPL!jP  
} y#j7vO  
} 4<i#TCGex3  
~t)cbF(UO  
} fAgeF$9@  
rO7_K>g?  
} u%~'+=  
) 2Ei<  
SortUtil: hOwb   
`(FjOd K  
package org.rut.util.algorithm; gsbr8zwG,  
=&z+7Pe[  
import org.rut.util.algorithm.support.BubbleSort; 2y - QH  
import org.rut.util.algorithm.support.HeapSort; &VGV0K3 Dp  
import org.rut.util.algorithm.support.ImprovedMergeSort; MY,~leP&  
import org.rut.util.algorithm.support.ImprovedQuickSort; '4 *0Pw  
import org.rut.util.algorithm.support.InsertSort; 1.du#w  
import org.rut.util.algorithm.support.MergeSort; dd  
import org.rut.util.algorithm.support.QuickSort; V: D;?$Jl  
import org.rut.util.algorithm.support.SelectionSort; "V' r}>  
import org.rut.util.algorithm.support.ShellSort; &DWSf`:Hx  
+]eG=. u  
/** J"C9z{[Z&  
* @author treeroot AioW*`[WjA  
* @since 2006-2-2 ij$NTY=u  
* @version 1.0 ubM1Qr  
*/ ZaYiby@Ci  
public class SortUtil { g8Ex$,\,  
public final static int INSERT = 1; .;4N:*hY  
public final static int BUBBLE = 2; 9^XZ|`  
public final static int SELECTION = 3; ^ Kz ?SO  
public final static int SHELL = 4; I?'*vAW<  
public final static int QUICK = 5; 8\rca:cF   
public final static int IMPROVED_QUICK = 6; #yochxF_  
public final static int MERGE = 7; ~6f/jCluR%  
public final static int IMPROVED_MERGE = 8; G'\[dwD,u  
public final static int HEAP = 9; yv4x.cfI2W  
\6|y~5Hw{r  
public static void sort(int[] data) { 1eD#-tzV  
sort(data, IMPROVED_QUICK); pTCD1)  
} k+9F;p7  
private static String[] name={ \p(S4?I7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" t`8Jz~G`  
}; |8'}mjs.Q  
9WG=3!-@  
private static Sort[] impl=new Sort[]{ ,/?J!W@m  
new InsertSort(), oJTEN}fL  
new BubbleSort(), Ak?9a_f  
new SelectionSort(), M2Nh3ijr  
new ShellSort(), 4;6"I2;zfG  
new QuickSort(), =3035{\  
new ImprovedQuickSort(), sWlxt qg  
new MergeSort(), @&m [w'tn  
new ImprovedMergeSort(), NPH(v`  
new HeapSort() bo=H-d|  
}; ~rV$.:%va  
[)I^v3]U  
public static String toString(int algorithm){ S%\5"uGa  
return name[algorithm-1]; o DZZ  
} TB>_#+:  
aH"d~Y^  
public static void sort(int[] data, int algorithm) { #`_W?-%^  
impl[algorithm-1].sort(data); K6->{!8]k  
} Tv|'6P  
=8l' [  
public static interface Sort { DghyE`  
public void sort(int[] data); &u:U"j  
} spA|[\Nl  
96\FJHt Z  
public static void swap(int[] data, int i, int j) { $*{,Z<|2  
int temp = data; ;l;jTb^l  
data = data[j]; fQ9af)d  
data[j] = temp; )zWu\ JRp  
} (Mfqzy  
} TIp\-  
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