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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。 <r`^iR)%  
插入排序: 3]z%C'  
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package org.rut.util.algorithm.support; N A`qC.K   
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import org.rut.util.algorithm.SortUtil; }={TVs^  
/** z+~klv 3  
* @author treeroot =PQMd  
* @since 2006-2-2 ;1gWz  
* @version 1.0 8? U!PW  
*/ kuX{2h*`  
public class InsertSort implements SortUtil.Sort{ q2SlK8`QJ  
7k<6oM1  
/* (non-Javadoc) BSyl!>G6n8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 45 \W%8  
*/ sFrerv&0  
public void sort(int[] data) { %k+G-oT5  
int temp; W08rGY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wR(>' ?  
} z\F#td{r  
} *IGCFZbp41  
} @Q%9b)\\  
AP:(/@K|  
} ~R+,4  
Dwx^hNh  
冒泡排序: dm:2:A8^  
dX^d\ wX  
package org.rut.util.algorithm.support; AuW-XK.  
*hV$\CLT.  
import org.rut.util.algorithm.SortUtil; WL#E%6p[  
!:^?GN#~x  
/** QT<\E`v  
* @author treeroot f6$$e+  
* @since 2006-2-2 3_ P<0%  
* @version 1.0 Yvn*evO4  
*/ R?Ou=p .  
public class BubbleSort implements SortUtil.Sort{ jl)7Jd  
=^5,ua6  
/* (non-Javadoc) [ 11D7L%1t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,qz:(Nr  
*/ =1SG^rp  
public void sort(int[] data) { L\%zNPLS  
int temp; y$Rh$e K  
for(int i=0;i for(int j=data.length-1;j>i;j--){ N"zg)MsX  
if(data[j] SortUtil.swap(data,j,j-1); SJai<>k h  
} lK2=[%,~  
} 7] }2`^9  
} o"19{ D^.  
} :T9 P9<  
N~)RR {$w  
} Kt*kARN?  
>U9JbkeF  
选择排序: "?n;dXYSi  
+YFAZv7`  
package org.rut.util.algorithm.support; cAQ_/>  
Vm8rQFCp74  
import org.rut.util.algorithm.SortUtil; \b6vu^;p  
W>'KE:!sp  
/** \; FE@  
* @author treeroot e&\+o}S  
* @since 2006-2-2 `D,mZj/b  
* @version 1.0 }Nc Ed;  
*/ ?`+G0VT  
public class SelectionSort implements SortUtil.Sort { 9cJ1J7y  
t wr-+rm2  
/* 6$5?%ZLJ  
* (non-Javadoc) xWuvT,^  
* p\G1O*Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }xb?C""q^q  
*/ zPyN2|iFah  
public void sort(int[] data) { }9*NEU) o  
int temp; (/^dyG|X'  
for (int i = 0; i < data.length; i++) { 3;<Vv*a"Dm  
int lowIndex = i; I*`;1+`  
for (int j = data.length - 1; j > i; j--) { d cG)ql4d  
if (data[j] < data[lowIndex]) { %h9'kJzNk  
lowIndex = j; t^|GcU]  
} .:(T}\]R  
} r=4vN=:  
SortUtil.swap(data,i,lowIndex); i$jzn ga  
} 'S'Z-7h>0  
} #J`M R05  
@;b @O _  
} 9lR-  
qo!6)Z  
Shell排序: RemjiCE0'  
"*HVL  
package org.rut.util.algorithm.support; -A(]U"@n  
('oA{,#L  
import org.rut.util.algorithm.SortUtil; n qC@dHP  
j9g0k<eg  
/** K4vOy_wT  
* @author treeroot  8\Uy  
* @since 2006-2-2 gaC [%M  
* @version 1.0 .qfU^AHA  
*/ Cb i;CF\{  
public class ShellSort implements SortUtil.Sort{ 4OTrMT$y  
D0*+7n3  
/* (non-Javadoc) 4sM9~zC5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %uQOAe55  
*/ (4Ha'uqz  
public void sort(int[] data) { .:9XpKbt  
for(int i=data.length/2;i>2;i/=2){ *Q!I^]CR  
for(int j=0;j insertSort(data,j,i); 3:?QE  
} +&*Ybbhb  
} yP*oRV%uX  
insertSort(data,0,1); )n{9*{Ch  
} hnTk)nq5#  
|576)  
/** ,UATT]>  
* @param data 6|B;C  
* @param j J}Ji /  
* @param i R d|M)  
*/ G"|c_qX  
private void insertSort(int[] data, int start, int inc) { -40s  
int temp; ::k cV'*  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); y*vg9`$k  
} X(qs]:  
} ]\6*2E{1m  
} /:+MUw7~  
z"$huE>P6  
} [n2)6B\/  
4Pkl()\c  
快速排序: :} N;OS_  
dCO7"/IHW  
package org.rut.util.algorithm.support; .-?Txkwb  
kB]?95>Wx  
import org.rut.util.algorithm.SortUtil; `^'0__<M  
3!Cab/T  
/** ot; ]?M  
* @author treeroot SS7C|*-Zd  
* @since 2006-2-2 D22jWm2  
* @version 1.0 UYkuz  
*/ ur JR[$p  
public class QuickSort implements SortUtil.Sort{ VX,@Gp_'m  
CJf4b:SY@  
/* (non-Javadoc) jVInTR0f[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n|Gw?@CU7  
*/ &]jCoBj+_  
public void sort(int[] data) { w|( ix;pK  
quickSort(data,0,data.length-1); '~n=<Y  
} 8ps1Q2|  
private void quickSort(int[] data,int i,int j){ _[{oK G^u  
int pivotIndex=(i+j)/2; Ch7&9NW  
file://swap ds:&{~7L<T  
SortUtil.swap(data,pivotIndex,j); .s`7n *xz  
?(E?oJ)(  
int k=partition(data,i-1,j,data[j]); jU!ibs}R3  
SortUtil.swap(data,k,j); d'!abnF[d  
if((k-i)>1) quickSort(data,i,k-1); %R@&8  
if((j-k)>1) quickSort(data,k+1,j); wt1Y&D  
f,:2\b?.  
} e?\34F  
/** `XK#sCC  
* @param data y2:Bv2}  
* @param i Igb%bO_  
* @param j N7#,x9+E  
* @return yq,%<%+  
*/ IvJ5J&!  
private int partition(int[] data, int l, int r,int pivot) { Cg&:+  
do{ F0tx.]uS  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); a~A"uLBR  
SortUtil.swap(data,l,r); m:5x"o7)ln  
} vg-'MG  
while(l SortUtil.swap(data,l,r); _GsHT\  
return l; tW=oAy  
} KDu~,P]  
*# ;  
} <59G  
4$Ud4<  
改进后的快速排序: 2,e>gP\]  
z2god 1"  
package org.rut.util.algorithm.support; 91:TE8?Z  
)g[7XB/w  
import org.rut.util.algorithm.SortUtil; yPT\9"/  
6;p"xC-  
/** S)W(@R+@4  
* @author treeroot cW?~]E'<  
* @since 2006-2-2 Gn>~CoFN  
* @version 1.0 '$Fu3%ft  
*/ )!g@MHHL  
public class ImprovedQuickSort implements SortUtil.Sort { of0 hJR  
+9]CGYj  
private static int MAX_STACK_SIZE=4096; /A>1TPb09"  
private static int THRESHOLD=10; V u1|5  
/* (non-Javadoc) *(j -jbA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "J*LR  
*/ Dt Ry%fA_  
public void sort(int[] data) { i$dF0.}Q  
int[] stack=new int[MAX_STACK_SIZE]; ;0;5+ J7  
#r;uM+  
int top=-1; e|Mw9DIW  
int pivot; $X]Z-RCK3  
int pivotIndex,l,r; cPg$*,]  
7&*d]#&~j  
stack[++top]=0; k*o>ZpjNH  
stack[++top]=data.length-1; 2br~Vn0N  
Ahrtl6@AS  
while(top>0){ rj-Q+rgup  
int j=stack[top--]; FXo{|z3  
int i=stack[top--]; *>J45U(6:  
"<1-9CMl  
pivotIndex=(i+j)/2; ^_XV}&7Q  
pivot=data[pivotIndex]; QI{<q<  
_[8sL^  
SortUtil.swap(data,pivotIndex,j); @2R+?2 j  
4KZ)`KPE  
file://partition GL'zNQP-  
l=i-1; * Fz#x{zt  
r=j; ErY-`8U"  
do{ 8e}8@[h  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zZI7p[A[3  
SortUtil.swap(data,l,r); nWsR;~pK  
} Vho^a:Z9}W  
while(l SortUtil.swap(data,l,r); ^9 {r2d&c  
SortUtil.swap(data,l,j); ;%Rp=&J  
_T(MMc  
if((l-i)>THRESHOLD){ sT+\ z  
stack[++top]=i; ?J's>q^X  
stack[++top]=l-1; ~=9]M.$  
} CQ^I;[=d  
if((j-l)>THRESHOLD){ fhbILg  
stack[++top]=l+1; ;ksxz  
stack[++top]=j; ]R6Z(^XT,E  
} vH/ Y]Am  
9<6Hs3|.!  
} A:YWXcg  
file://new InsertSort().sort(data); Ng+Ge5C9  
insertSort(data); VIg=| Oe),  
} .p /VRlLU  
/** +e( (!  
* @param data `]m/za%7  
*/ =*Y=u6?  
private void insertSort(int[] data) { H`Ld,E2ex&  
int temp; r:9H>4m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ">rt *?^  
} Cswa5 l`af  
} w"?E=RS  
} l527>7 eT  
iYl$25k/1  
} @d_;p<\l  
V9<CeTl'  
归并排序: 62{[)jt{  
?%RR+(2m  
package org.rut.util.algorithm.support; ~.f[K{h8  
Q2K)Nl >_  
import org.rut.util.algorithm.SortUtil; q<!Kt I4  
2-.%WhE/  
/** n9r3CLb[  
* @author treeroot wVY;)1?  
* @since 2006-2-2 ~ZXAW~a}  
* @version 1.0 C! J6"j  
*/ >? ({  
public class MergeSort implements SortUtil.Sort{ W.VyH|?  
3-$w5O3}  
/* (non-Javadoc) HP*AN@>Kw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |,OTGZgc  
*/ Ehf3L |9   
public void sort(int[] data) { 6v9A7g;4.  
int[] temp=new int[data.length]; }Q%fY&#(bp  
mergeSort(data,temp,0,data.length-1); 8I|2yvhP  
} o;M-M(EZQ6  
f+D a W  
private void mergeSort(int[] data,int[] temp,int l,int r){ N~@VZbS(6  
int mid=(l+r)/2; +yYSp8>  
if(l==r) return ; 1[r;  
mergeSort(data,temp,l,mid); >5}jM5$  
mergeSort(data,temp,mid+1,r); Dt8wd,B  
for(int i=l;i<=r;i++){ HRZ3}8Qj  
temp=data; d( +E0  
} XG_Iq ,  
int i1=l; UON W3}-  
int i2=mid+1; )./.rtP|4  
for(int cur=l;cur<=r;cur++){ -(YdK8  
if(i1==mid+1) 'hw_ew   
data[cur]=temp[i2++]; g&6O*vx  
else if(i2>r) _Q3Ad>,U  
data[cur]=temp[i1++]; WmT(>JBO  
else if(temp[i1] data[cur]=temp[i1++]; Z,bvD'u  
else |`yzH$,F  
data[cur]=temp[i2++]; ewb/ Z[4  
} ]VS$ ?wD  
} =\l7k<  
hV4\#K[  
} Mb0cdK?hA  
ljo^ 2  
改进后的归并排序: 2eh j2T  
3U73_=>=&  
package org.rut.util.algorithm.support; W!G2$e6  
pr(16P  
import org.rut.util.algorithm.SortUtil; $6]7>:8mz  
N}2xt)JZz  
/** <r{ )*]#l  
* @author treeroot k(v8zDq*  
* @since 2006-2-2 * 5Y.9g3)Q  
* @version 1.0 4?a!6  
*/ 2 !^[x~t  
public class ImprovedMergeSort implements SortUtil.Sort { -O=a"G=  
(iZE}qf7 g  
private static final int THRESHOLD = 10; h.W;Dmf6]  
);.q:"  
/* uY;2tZldf=  
* (non-Javadoc) {%;KkC8=R  
* jW-j+ WGSM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z 7M%}V%  
*/ $&|*v1rH  
public void sort(int[] data) { Nl^{w'X0h  
int[] temp=new int[data.length]; &G>EBKn\2`  
mergeSort(data,temp,0,data.length-1); @#%rTKD9F  
} d#9"_{P  
*0,?QS-a  
private void mergeSort(int[] data, int[] temp, int l, int r) { l&d 6G0  
int i, j, k; R.EA5X|_  
int mid = (l + r) / 2; =*YK6  
if (l == r) K"sfN~@rT[  
return; KR6*)?c`  
if ((mid - l) >= THRESHOLD) hC.7Z]  
mergeSort(data, temp, l, mid); <E|K<}W#  
else bTn7$EG  
insertSort(data, l, mid - l + 1); L:y} L  
if ((r - mid) > THRESHOLD) syYg, G[  
mergeSort(data, temp, mid + 1, r); Hop$w  
else <4W"ne28  
insertSort(data, mid + 1, r - mid); AE)<ee%\\  
2>l:: 8Pp  
for (i = l; i <= mid; i++) { !$>d75zli  
temp = data; 2dr[0tE  
} y/m^G=Q6g#  
for (j = 1; j <= r - mid; j++) {  |Aw(v6  
temp[r - j + 1] = data[j + mid]; F` ifHO  
} o 2 5kFD  
int a = temp[l]; x hFQjV?V  
int b = temp[r]; *My?l75  
for (i = l, j = r, k = l; k <= r; k++) { u|=G#y;3  
if (a < b) { eYurg6Ob~  
data[k] = temp[i++]; q)ygSOtj  
a = temp; L30x2\C  
} else { KsGSs9  
data[k] = temp[j--]; V X<ZB +R  
b = temp[j]; b+NF: -fO  
} W.ud<OKP90  
} b\ %=mN  
} OH28H),}  
&DFe+y~PR  
/** $;_'5`xs  
* @param data ,$habq=;  
* @param l 2oAPJUPOJ  
* @param i ^ b`}g  
*/ x,js}Mlw  
private void insertSort(int[] data, int start, int len) { sa`7_KB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $.}fL;BzVz  
} ih?_ fW  
} +0=u]  
} !+.|T9P  
} w.cQ|_  
!UD62yw~  
堆排序: zVs_|x="  
Hi{c[;  
package org.rut.util.algorithm.support; )@3ce'  
QJo)  
import org.rut.util.algorithm.SortUtil; Xu$xO(  
MjG=6.J|`  
/** f{lg{gA(  
* @author treeroot LS?hb)7  
* @since 2006-2-2 O!z H5  
* @version 1.0 e+=Ojo#  
*/ kRskeMr:Rd  
public class HeapSort implements SortUtil.Sort{ WZRrqrjq  
nD.4c-hd$q  
/* (non-Javadoc) K,' ]G&K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zb7KHKO{  
*/ KMznl=LF  
public void sort(int[] data) { (@O F Wc"p  
MaxHeap h=new MaxHeap(); A $W,#`E  
h.init(data); !a3cEzs3  
for(int i=0;i h.remove(); ]}F_nc2L  
System.arraycopy(h.queue,1,data,0,data.length); Tn/ 3`j {  
} K 3?7Hndf2  
QQ97BP7W  
private static class MaxHeap{ >  K,Q`sS  
K(Otgp+zb  
void init(int[] data){ C$)#s{*  
this.queue=new int[data.length+1]; pq>"GEN  
for(int i=0;i queue[++size]=data; anA>'63  
fixUp(size); FgRlxz  
} YmHn*N}:U  
} L1.<LB^4'  
A7-QOqST(  
private int size=0; !yH&l6s  
@6ZQkX/  
private int[] queue; }Fyf?TZ$T  
hkv&Od,  
public int get() { ,a< !d  
return queue[1]; 8:-[wl/@  
} J}KATpHs  
w*Sl  
public void remove() { Fg Qd7p  
SortUtil.swap(queue,1,size--); 52K3N^RgR  
fixDown(1); 6ndt1W z  
} j$zw(EkN  
file://fixdown ,jbj-b(  
private void fixDown(int k) { eqs.zL  
int j; 9<P1?Q  
while ((j = k << 1) <= size) { _i:yI-jA  
if (j < size %26amp;%26amp; queue[j] j++; O~-#>a  
if (queue[k]>queue[j]) file://不用交换 j,Qp*b#Qo  
break; 8@Xq ,J  
SortUtil.swap(queue,j,k); KCDEMs}}zM  
k = j; ar=uDb;  
} Kw&J< H  
} 'wLQ9o%=p|  
private void fixUp(int k) { ^ {-J Y  
while (k > 1) { +QuaQ% lA  
int j = k >> 1; P$Xig  
if (queue[j]>queue[k]) k%/Z.4vQG  
break; ?^2(|t9KU  
SortUtil.swap(queue,j,k); n'1pNL:  
k = j; 28LjQ!  
} a~7`;Ar  
} (5;w^E9*n;  
1Xt% O86  
} [$]vi`c2  
%ztCcgu*  
} E*.D_F  
_%;$y5]v  
SortUtil: OYgD9T.8^  
3F[z]B  
package org.rut.util.algorithm; 1N1MD@C?P  
4{X5ZS?CkI  
import org.rut.util.algorithm.support.BubbleSort; 5)2lZ(5.A#  
import org.rut.util.algorithm.support.HeapSort; :Y0*P  
import org.rut.util.algorithm.support.ImprovedMergeSort; U=QV^I Qm  
import org.rut.util.algorithm.support.ImprovedQuickSort; =5oE|F%  
import org.rut.util.algorithm.support.InsertSort; ,S2D/Y^>  
import org.rut.util.algorithm.support.MergeSort; H{E223  
import org.rut.util.algorithm.support.QuickSort; gx#xB8n  
import org.rut.util.algorithm.support.SelectionSort; `3SY~&X  
import org.rut.util.algorithm.support.ShellSort; W7S`+Pq  
7P?z{x':T  
/** 0tC+?  
* @author treeroot w=s:e M@  
* @since 2006-2-2 bwqla43gX  
* @version 1.0 !GURn1vcAe  
*/ xYRN~nr  
public class SortUtil { yK_$6EtNKj  
public final static int INSERT = 1; Nqk*3Q"f  
public final static int BUBBLE = 2; -k|r#^(G2  
public final static int SELECTION = 3; 4H]Go~<  
public final static int SHELL = 4; gb|C592R5C  
public final static int QUICK = 5; w{UVo1r:  
public final static int IMPROVED_QUICK = 6; C!]hu)E  
public final static int MERGE = 7; lDnF(  
public final static int IMPROVED_MERGE = 8; sikG}p0mx<  
public final static int HEAP = 9; =m:xf&r#  
B5~S&HQ?B6  
public static void sort(int[] data) { 0ym>Hbax)  
sort(data, IMPROVED_QUICK); z^T/kK3I  
} :&HrOdz  
private static String[] name={ _)yn6M'Dt  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vXAO#'4tm%  
}; 6UG7lH!M  
7MZBU~,r  
private static Sort[] impl=new Sort[]{ [DC8X P5 <  
new InsertSort(), ?V4?r2$c  
new BubbleSort(), (q59cAw~X  
new SelectionSort(), f6j;Y<}' g  
new ShellSort(), 93$'PwWgiF  
new QuickSort(), 1\=)b< y  
new ImprovedQuickSort(), C,P>7  
new MergeSort(), Pb]: i+c)  
new ImprovedMergeSort(), 75u/'0~5  
new HeapSort() D kl4 ^}  
}; JQj?+PI  
4%LGP h  
public static String toString(int algorithm){ %YlL-*7 L  
return name[algorithm-1]; L%}k.)yev  
} z Xx HaM  
d`5xd@p  
public static void sort(int[] data, int algorithm) { KaNi'=nW  
impl[algorithm-1].sort(data); PxNp'PZr9  
} --4,6va`e  
3s<~}&"  
public static interface Sort { zt/b S/  
public void sort(int[] data); I} m\(TS-"  
} Z,^`R] 9  
+3dWnBg?  
public static void swap(int[] data, int i, int j) { vxhs1vh  
int temp = data; 7xTgG!>v  
data = data[j]; \  $;E,  
data[j] = temp; RZ-=UIf  
} w=Ac/ 12  
} <u]M):b3  
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