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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。 ~-NSIV:f  
插入排序: x]`F#5j  
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package org.rut.util.algorithm.support; Kg~D~ +j  
QuMv1)n  
import org.rut.util.algorithm.SortUtil; G>:v1lde  
/** uX!6: v]  
* @author treeroot O13]H"O_  
* @since 2006-2-2 {/)i}V#RE  
* @version 1.0 vN v'%;L  
*/ Ax\d{0/oL2  
public class InsertSort implements SortUtil.Sort{ _\yR/W~  
]%-U~avph  
/* (non-Javadoc) Uc_ }="  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g$2#TWW5  
*/ [;aM8N  
public void sort(int[] data) { |wJdp,q R  
int temp; $bp$[fX(e  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sqpo5~  
} }D!tB  
} .fqy[qrM  
} L'a+1O1q&i  
HCrQ+r{g  
} LUxDP#~7  
CAviP61T  
冒泡排序: Rs{8vV  
doTbol?+  
package org.rut.util.algorithm.support; &c "!Y)%G  
!4#qaH-Q  
import org.rut.util.algorithm.SortUtil; ]v5/K  
)uAY_()/  
/** VJw7defc  
* @author treeroot &n8Ja@Y]  
* @since 2006-2-2 Fab]'#1q4  
* @version 1.0 rSt5 @f?  
*/ 'hWA&Xx +  
public class BubbleSort implements SortUtil.Sort{ m;4ti9  
ceJ#>Rj  
/* (non-Javadoc) K_ymA,&()  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :sK4mRF  
*/ s* u1n+Zq  
public void sort(int[] data) { 'bLP#TAzf  
int temp; j&/+/s9N  
for(int i=0;i for(int j=data.length-1;j>i;j--){ lijT L-3  
if(data[j] SortUtil.swap(data,j,j-1); (Nz`w  
} "CC"J(&a  
} Nz3+yxv1  
} [ *It' J^  
} z.SKawm6T  
*-fd$l.  
} a+J>  
0+1!-Wo  
选择排序: Xu~N97\G  
L?;UcCB  
package org.rut.util.algorithm.support; Oq% TW|a#  
6^J[SQ6P  
import org.rut.util.algorithm.SortUtil; ;{H Dz$  
0U/[hG"DKN  
/** (x/:j*`K  
* @author treeroot zd8A8]&-  
* @since 2006-2-2 p{_*<"cfYn  
* @version 1.0 |S).,B  
*/ Iv3yDL;  
public class SelectionSort implements SortUtil.Sort { U5-8It2OR  
Jb$G  
/* f^hJAZ  
* (non-Javadoc) z]hRc8 g}d  
* {E(2.'d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #r"|%nOfY  
*/ ( sl{Rgxe*  
public void sort(int[] data) { zOMxg00  
int temp; b'SP,}s5"  
for (int i = 0; i < data.length; i++) { Kv1~,j6  
int lowIndex = i; zRLJ|ejMP  
for (int j = data.length - 1; j > i; j--) { ;CS[Ja>e  
if (data[j] < data[lowIndex]) { QGOkB  
lowIndex = j; - |DWPU!"  
} 5tkKd4VfL  
} h]~FYY  
SortUtil.swap(data,i,lowIndex); Op9 ^Eu%n  
} re%XaL  
} ) YwEl72c  
Xl2g Hh  
} CeOA_M  
/>I5,D'h  
Shell排序: bWb/>hI8 Q  
j+-`P5  
package org.rut.util.algorithm.support; V D7^wd9  
"8ZV%%elp  
import org.rut.util.algorithm.SortUtil; 'xai5X  
n2-+.9cY  
/** rxol7"2l  
* @author treeroot 2uT6M%OC  
* @since 2006-2-2 mh[,E8'd  
* @version 1.0 v,Z]Vqk  
*/  r90tXx  
public class ShellSort implements SortUtil.Sort{ >*O5Ry:4  
6rmx{Bt  
/* (non-Javadoc) `Nvhp]E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :epB:r  
*/ RJ0,7 E<B  
public void sort(int[] data) { [ R8BcO(  
for(int i=data.length/2;i>2;i/=2){ i83Jy w,f  
for(int j=0;j insertSort(data,j,i); ?P|z,n{  
} BB3 a8  
} ,%x2SyA  
insertSort(data,0,1); D?S|]]Y!q  
} A_ &IK;-go  
paN=I=:*M  
/** mMZrBz7r  
* @param data NRG~ya >  
* @param j 9cN@y<_I  
* @param i 91&=UUkK?  
*/ =Oh$pZRymu  
private void insertSort(int[] data, int start, int inc) { (O09HY:  
int temp; ljrJC  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Zp_j\B  
} ' ZTRl+  
} yVn%Bz' [  
} `g(#~0R  
j?$B@Zk  
} 6 mLC{X[  
Fq+Cr?-  
快速排序: t'W6Fmwkx  
rttKj{7E  
package org.rut.util.algorithm.support; [D+PDR  
2w1Mf<IXPo  
import org.rut.util.algorithm.SortUtil; <x;g9Z>(  
W2$rC5|  
/** B&59c*K  
* @author treeroot W"#<r  
* @since 2006-2-2 r/ATZAgHP  
* @version 1.0 XZ$g~r  
*/ ]!P6Z?  
public class QuickSort implements SortUtil.Sort{ h \`(  
J'=s25OWU  
/* (non-Javadoc) 3 Z SU^v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3bC-B!{;g  
*/ Mx93D   
public void sort(int[] data) { zN+jn  
quickSort(data,0,data.length-1); *qL2=2  
} +YCWoX 2  
private void quickSort(int[] data,int i,int j){ ^HP$r*  
int pivotIndex=(i+j)/2; u|ihUE!h  
file://swap Qqb%^}Xx'u  
SortUtil.swap(data,pivotIndex,j); 9_&]7ABV  
@*op5qVw  
int k=partition(data,i-1,j,data[j]);  %O(W;O  
SortUtil.swap(data,k,j); C$ at9=(E6  
if((k-i)>1) quickSort(data,i,k-1); Q(1R=4?.Z  
if((j-k)>1) quickSort(data,k+1,j); Avljrds+7  
r_'];  
} F)'_,.?0  
/** BUh(pS:  
* @param data xQ?$H?5B<  
* @param i TK> ~)hc}  
* @param j O6-';H:I]L  
* @return +\PLUOk  
*/ `N}'5{I  
private int partition(int[] data, int l, int r,int pivot) { 0_^3 |n  
do{ 6+>X`k%D  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M6]:^;p'  
SortUtil.swap(data,l,r); Opy{i#>  
} >K%+h)%kI  
while(l SortUtil.swap(data,l,r); y?}<SnjP:  
return l; 65+2+p  
} 9Z 6  
cZ.p  
} KUq(&H7  
)T(1oK(g  
改进后的快速排序: *a(GG  
ESS1 L$y  
package org.rut.util.algorithm.support; dt<P6pK-  
&)!N5Veb  
import org.rut.util.algorithm.SortUtil; KmD#Ia  
E%Ysyk  
/** j{ri]?p  
* @author treeroot RSjcOQ8&.w  
* @since 2006-2-2 vsq |m 5  
* @version 1.0 +f^|Yi  
*/ NPE 4@c_a@  
public class ImprovedQuickSort implements SortUtil.Sort { \)g}   
RM25]hx  
private static int MAX_STACK_SIZE=4096; =G 'c%  
private static int THRESHOLD=10; ;Q5o38(  
/* (non-Javadoc) 6k|f]BCL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _*t75e$-  
*/ H5gcP11r  
public void sort(int[] data) { xWWVU}fd1  
int[] stack=new int[MAX_STACK_SIZE]; `Z2-<:]6&a  
,;h}<("q  
int top=-1; X4bZ4U*  
int pivot; WZbRR.TxO  
int pivotIndex,l,r; U'}[:h~)  
lb}:! Y  
stack[++top]=0; [F27i#'I]  
stack[++top]=data.length-1; 4 `}6W>*R  
&_]bzTok  
while(top>0){ 7u%OYt D E  
int j=stack[top--]; 9J}^{AA  
int i=stack[top--]; E,A9+OKxJ  
im mf\  
pivotIndex=(i+j)/2; a7z% )i;Z  
pivot=data[pivotIndex]; Nqj5,9*c  
w (odgD  
SortUtil.swap(data,pivotIndex,j); ae+*gkPv8  
J@q!N;eh|  
file://partition #\LYo{op/.  
l=i-1; 8(-N;<Ef2  
r=j; H ;HFen|  
do{ AD'c#CT  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hi ),PfAV  
SortUtil.swap(data,l,r); !3*%-8bp  
} 2<_|1%C  
while(l SortUtil.swap(data,l,r); G|UeR=/  
SortUtil.swap(data,l,j); m]VOw)mBF  
zwlz zqV  
if((l-i)>THRESHOLD){ *W4~.peoE  
stack[++top]=i; V67<Ky>  
stack[++top]=l-1; pvM`j86 _  
} xZMAX}8v  
if((j-l)>THRESHOLD){ )EsFy6K:  
stack[++top]=l+1; _E^ !, Wz  
stack[++top]=j; *Y ?&N2@c  
} ,Mn?h\  
%cq8%RT  
} 5pxw[c53#  
file://new InsertSort().sort(data); RWGAxq`9f  
insertSort(data); 2&<&q J  
} 6?l|MU"Q.  
/** P#2#i]-  
* @param data Rap_1o9#\  
*/ )5s-"o<  
private void insertSort(int[] data) { T FK#ign  
int temp; }Szs9-Wns  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tHH @[E+h  
} t)l^$j !h@  
} tj" EUqKQ  
} arn7<w0  
YD;"_yH  
} v<]$,V]  
9 E  
归并排序: e[.JS6  
hJoh5DIE95  
package org.rut.util.algorithm.support; IOH6h=  
/| [%~`?BM  
import org.rut.util.algorithm.SortUtil; tfd!;`B  
%T~LK=m  
/** +?C7(-U>  
* @author treeroot N6/;p]|  
* @since 2006-2-2 wg KM6?  
* @version 1.0 0F[+rh"x  
*/ U0dhr;l  
public class MergeSort implements SortUtil.Sort{ )s8{|)-  
FzQ6UO~'  
/* (non-Javadoc) Z}r9jM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Qc=D"'  
*/ ~qb-uT\(99  
public void sort(int[] data) { 24d{ol)  
int[] temp=new int[data.length]; @Yzb6@g"  
mergeSort(data,temp,0,data.length-1); y6Ea_v  
} TZE;$:1vx>  
+(o]E3  
private void mergeSort(int[] data,int[] temp,int l,int r){ Vs&Ul6@N  
int mid=(l+r)/2; .v#Tj|w^  
if(l==r) return ; q<Wz9lDMNR  
mergeSort(data,temp,l,mid); 2!6-+]tC  
mergeSort(data,temp,mid+1,r); ]=sGLd^)E  
for(int i=l;i<=r;i++){ RjG=RfB'V  
temp=data; /8s>JPXKH[  
} KA]5tVQA  
int i1=l; qf B!)Y  
int i2=mid+1; Vg1MA  
for(int cur=l;cur<=r;cur++){ d)v'K5  
if(i1==mid+1) MVe4[<  
data[cur]=temp[i2++]; \yA*)X+  
else if(i2>r) kBJx`tjtp  
data[cur]=temp[i1++]; )E=~ _`XO  
else if(temp[i1] data[cur]=temp[i1++]; oJor ]QYK  
else -f%J_`  
data[cur]=temp[i2++]; .Gnzu"lod  
} Ve|=<7%%S  
}  ~&Y%yN^  
4k=LVu]Kcr  
} 43o!Vr/ S  
Gq;!g(  
改进后的归并排序: t p3 !6I6  
$or8z2d1  
package org.rut.util.algorithm.support; E9PD1ADR  
]dQ  
import org.rut.util.algorithm.SortUtil; -jL10~/  
PRyzUG&  
/** {{e+t8J??  
* @author treeroot \PgMMc4'  
* @since 2006-2-2 eih~ SBSH  
* @version 1.0 U:O&FE  
*/ "A3V(~%!  
public class ImprovedMergeSort implements SortUtil.Sort { %&S :W%qm?  
H!uq5` j0K  
private static final int THRESHOLD = 10; sWX\/Iyy2p  
Nmu=p~f}3`  
/* ,~qjL|9  
* (non-Javadoc) )W$@phY(I  
* g7<u eF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #(Ezt% ^  
*/ {&s.*5  
public void sort(int[] data) { 5SwQ9#  
int[] temp=new int[data.length]; DeR C_ [  
mergeSort(data,temp,0,data.length-1); -!pg1w06  
} ];au! _o  
J nf@u  
private void mergeSort(int[] data, int[] temp, int l, int r) { 8z'_dfP=5  
int i, j, k; Ox}a\B8  
int mid = (l + r) / 2; J={IGA  
if (l == r) SW*Y u{  
return; }Jk=ZBVjT7  
if ((mid - l) >= THRESHOLD) {N 0i 3e s  
mergeSort(data, temp, l, mid); >r5s>A[YC  
else  B/ACU  
insertSort(data, l, mid - l + 1); E3,Nc`'m9  
if ((r - mid) > THRESHOLD) f|-%.,  
mergeSort(data, temp, mid + 1, r); uUI@!)@2  
else PvqG5-L~W  
insertSort(data, mid + 1, r - mid); " )/febBS  
Y8%*S%yO  
for (i = l; i <= mid; i++) { vHxLn/  
temp = data; bf-V Q7  
} y?yWM8  
for (j = 1; j <= r - mid; j++) { @DA.$zn&  
temp[r - j + 1] = data[j + mid]; =/L;}m)7  
} $VyH2+ jC  
int a = temp[l]; V [r1bF  
int b = temp[r]; Pvu*Y0_p  
for (i = l, j = r, k = l; k <= r; k++) { CWS&f g%o{  
if (a < b) { ca!DZ%y  
data[k] = temp[i++]; \XT~5N6  
a = temp; )MU)'1jc,  
} else { o<nkK+=Afm  
data[k] = temp[j--]; >.f'_2#Z&  
b = temp[j]; v* /}s :a  
} `%A>{A"  
} k&SI -jxj  
} ^h\Y.  
6=i@t tAK  
/** 23~KzC  
* @param data \S`|7JYW  
* @param l x4nmDEpa  
* @param i 7\sRf/  
*/ $mq @g  
private void insertSort(int[] data, int start, int len) { w@"l0gm+u[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0z:BSdno  
} e!JC5Al7  
} c 6Z\ecH9  
} m(?ZNtBQt  
} {|ChwM\x  
OVgx2_F  
堆排序: 4J6,_8`U  
}E]&,[4&M  
package org.rut.util.algorithm.support; j9]H~:g$d  
O[/l';i  
import org.rut.util.algorithm.SortUtil; BARs1^pR4  
leomm+f^  
/** y( uE  
* @author treeroot ej&ZE n  
* @since 2006-2-2 La#otuw+?  
* @version 1.0 STY\c5  
*/ :r,o-D  
public class HeapSort implements SortUtil.Sort{ f+iM_MI  
^t#W?rxp&  
/* (non-Javadoc) !%s&GD8&l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {Wp5Ane  
*/ $MB /j6#j  
public void sort(int[] data) { /agX! E4s  
MaxHeap h=new MaxHeap(); l!^+Xeg~  
h.init(data); /!L#cUog  
for(int i=0;i h.remove(); J_ S]jE{  
System.arraycopy(h.queue,1,data,0,data.length); ?,0 5!]  
} ;&v~tD7  
uy^vQ/  
private static class MaxHeap{ "ZU CYYre  
_yJAn\  
void init(int[] data){ R#0Z  
this.queue=new int[data.length+1]; b9gezXAcd  
for(int i=0;i queue[++size]=data; H^N 5yOj/  
fixUp(size); DEcsFC/SK  
} vsL)E:0  
} E |BE(F;K  
lyYi2& %  
private int size=0; }E%#g#  
"U DV4<|^k  
private int[] queue; Hp!c\z;  
N akSIGm  
public int get() { FJl_2  
return queue[1]; }u aRS9d  
} H6I]GcZ$  
++)3*+N+  
public void remove() { S_ Pa .  
SortUtil.swap(queue,1,size--); l[D5JnWxt  
fixDown(1); )lsR8Hi8  
} 2Yt+[T*  
file://fixdown #ovmX  
private void fixDown(int k) { 5o&noRIIr  
int j; gN("{j1Q  
while ((j = k << 1) <= size) { @ZUrr_|  
if (j < size %26amp;%26amp; queue[j] j++; |q:p^;x  
if (queue[k]>queue[j]) file://不用交换 4I97<zmrT  
break; >|S&@<  
SortUtil.swap(queue,j,k); (+^z9p7/!  
k = j; byW9]('e  
} E0o?rgfdq  
} 9< $n'g  
private void fixUp(int k) { {+V]saYP  
while (k > 1) { eXdE?j  
int j = k >> 1; Z+G.v=2q<  
if (queue[j]>queue[k]) y$7vJl.uS/  
break; +4Uxq{.K  
SortUtil.swap(queue,j,k); l9"T"9C{  
k = j; 8UahoNrSt  
} r%^l~PN  
} Gec?  
^[]@dk9  
} c4'k-\JvT  
f1_b``M  
} #OT8_D  
{r,MRZaa  
SortUtil: lPywr TG0  
[m9Iz!E  
package org.rut.util.algorithm; %Ct^{k~1  
nGqD{!i<  
import org.rut.util.algorithm.support.BubbleSort; O ^+H:Y|  
import org.rut.util.algorithm.support.HeapSort; yD-L:)@"  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7ZsBYP8%  
import org.rut.util.algorithm.support.ImprovedQuickSort; ev}ugRxt|k  
import org.rut.util.algorithm.support.InsertSort; &eqeQD6  
import org.rut.util.algorithm.support.MergeSort; *49lM;  
import org.rut.util.algorithm.support.QuickSort; [$<\*d/  
import org.rut.util.algorithm.support.SelectionSort; ..5rW0lr  
import org.rut.util.algorithm.support.ShellSort; (&)PlIi7  
8w Xnc%  
/** WX9ABh&5  
* @author treeroot g]V_)}  
* @since 2006-2-2 m@Vz42g~+  
* @version 1.0 @*VfG CQ(  
*/ Z@G[\"  
public class SortUtil { nH=8I~jp  
public final static int INSERT = 1; @g{FNXY$m  
public final static int BUBBLE = 2; 3iI 4yg  
public final static int SELECTION = 3; Q2L>P<87T  
public final static int SHELL = 4; EL?6x  
public final static int QUICK = 5; h'tb  
public final static int IMPROVED_QUICK = 6; &O:IRR7p  
public final static int MERGE = 7; Yi5^# G  
public final static int IMPROVED_MERGE = 8; Gz,?e]ZV  
public final static int HEAP = 9; eq!>~: #  
;;zQVD )X  
public static void sort(int[] data) { 5S EyAhB  
sort(data, IMPROVED_QUICK); m);0sb  
} iW # |N^  
private static String[] name={ !d)Vr5x  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [K=M; $iQ  
}; l[AQyR1+/  
KS3>c7  
private static Sort[] impl=new Sort[]{ \Xr Sn_p-  
new InsertSort(), D\ ;(BB  
new BubbleSort(), 5(+PI KCjC  
new SelectionSort(), U_8 Z&  
new ShellSort(), fVXZfq6  
new QuickSort(), VPh0{(O^=  
new ImprovedQuickSort(), !*tV[0 i2  
new MergeSort(), @X?7a]+;8  
new ImprovedMergeSort(), OABMIgX  
new HeapSort() ?DwI>< W  
}; 4Ucs9w3[  
aJ{-m@/ 5  
public static String toString(int algorithm){ e}u68|\EC  
return name[algorithm-1]; 1LK`    
} \|gE=5!Am=  
z[0+9=<Y  
public static void sort(int[] data, int algorithm) { <0w"$.K#3  
impl[algorithm-1].sort(data); cR *5iqA  
} 2:6W_[7l!  
<y}9Twdy  
public static interface Sort { l 10p'9 n  
public void sort(int[] data); g5OKhL0u  
} d5z=fH9  
2&,jO+BqE@  
public static void swap(int[] data, int i, int j) { tpY]Mz[J  
int temp = data; v><c@a=[  
data = data[j]; :]rb}1nLB  
data[j] = temp; `k.Tfdu)K  
} [XKudw%  
} aob+_9o  
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