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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。 _rVX_   
插入排序: q &6=oss!  
Y]Vc}-a(h  
package org.rut.util.algorithm.support; Wc>)/y5$  
i8@e}O I  
import org.rut.util.algorithm.SortUtil; NRF%Qd8I/2  
/** tsVhPo]e0  
* @author treeroot LK/V]YG  
* @since 2006-2-2 /G+gk0FW  
* @version 1.0 l:,UN07s  
*/ CHP6H}#|g  
public class InsertSort implements SortUtil.Sort{ Cbvl( (  
tg3JU\  
/* (non-Javadoc) #%tL8/K*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =e{KtX.  
*/ `b'J*4|oGo  
public void sort(int[] data) { A8(PI)Ic.  
int temp; E'6P>6l5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $%8n,FJ[  
} i3j jPN!  
} ^WPV  
} (k.7q~:  
=8_TOvSJ4p  
} k T>}(G||  
}0),b ?*e  
冒泡排序: )p9n|C  
pT$AdvI]  
package org.rut.util.algorithm.support; 4aKy]zPoE  
GFkte  
import org.rut.util.algorithm.SortUtil; &B7KWvAy  
gRI|rDC)B  
/** Bd[Gsns  
* @author treeroot wVtBeZa  
* @since 2006-2-2 N6%q%7F.:  
* @version 1.0 R)Fl@ Tn  
*/ ) <~7<.0  
public class BubbleSort implements SortUtil.Sort{ Kp;o?5H  
jzMGRN/67  
/* (non-Javadoc) yo6IY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >[=`{B  
*/ x^BBK'  
public void sort(int[] data) { '#6DI"vJ  
int temp; O0YGjS|d  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <sOB j'  
if(data[j] SortUtil.swap(data,j,j-1); o!S_j^p[C  
} T/5U lW|\  
} a9-;8`fCR  
} Big-)7?  
} xGL"N1  
+?tNly`  
} uGWk(qn  
H/f= 2b  
选择排序: q1Mk_(4oJ  
o\[nGf C&  
package org.rut.util.algorithm.support; !>j- j  
c2"OpI  
import org.rut.util.algorithm.SortUtil; pUx@QyrI  
m%puD 9  
/** `0N/ /Q  
* @author treeroot nr;/:[F  
* @since 2006-2-2 tnntHQ&b  
* @version 1.0 p9J(,}  
*/ Ye\%o[X  
public class SelectionSort implements SortUtil.Sort { 1|CO>)*D  
QKxu vW  
/* d"a`?+(Q  
* (non-Javadoc) V,}cDT>  
* $2 0*&4y^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;H.r6  
*/ 6 ?cV1:jh  
public void sort(int[] data) { @*dA<N.9  
int temp; K\PS$  
for (int i = 0; i < data.length; i++) { );vU=p"@  
int lowIndex = i; DlP=R  
for (int j = data.length - 1; j > i; j--) { :tMWy m  
if (data[j] < data[lowIndex]) { h#>67gJV  
lowIndex = j; WqAP'x 1  
} 6O?O6Ub  
} %* 8QLI  
SortUtil.swap(data,i,lowIndex); 3[$VW+YV  
} $!t!=  
} ?*g]27f11  
-J:vYhq|g  
} Qw ED>G|  
gi8kYHldH  
Shell排序: m-K6y7t  
|<S9nZg%p  
package org.rut.util.algorithm.support; @eul~%B{X  
;J<kG@  
import org.rut.util.algorithm.SortUtil; f7L|Jc  
f3O3pIA  
/** @/~41\=e  
* @author treeroot 3j2}n o8O  
* @since 2006-2-2 ITTC}  
* @version 1.0 6YN4]  
*/ nt7ui*k  
public class ShellSort implements SortUtil.Sort{ /[mCK3_  
zOcMc{w0   
/* (non-Javadoc) )g-*fSa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'del|"h!M  
*/ b]Jh0B~Y  
public void sort(int[] data) { I".r`$XZ  
for(int i=data.length/2;i>2;i/=2){ v{I:Wxe  
for(int j=0;j insertSort(data,j,i); b'G4KNW  
} V9+7A  
} X"R;/tZ S4  
insertSort(data,0,1); X|b~,X%N  
} ^+pmZw9 0  
VF4F7'  
/** ,30&VW##  
* @param data :f `1  
* @param j PR Y)hb;1  
* @param i g{&ux k);  
*/ 2o,%O91p  
private void insertSort(int[] data, int start, int inc) { \aG>(Mr  
int temp; \KG{ 11  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Eh JYdO[e  
} Ly3^zF W  
} t4nAy)I)P  
} FG'1;x!  
o rEo$e<  
} .n"aQ@!  
<53~Y  
快速排序: sLCL\dWT  
{&3n{XrF(  
package org.rut.util.algorithm.support; iNha<iS+  
|n0 )s% 8`  
import org.rut.util.algorithm.SortUtil; norWNm(n  
8c#u"qF  
/** <pz;G}  
* @author treeroot Lt_7pb%  
* @since 2006-2-2 bd9]'  
* @version 1.0 JGJQ5zt  
*/ @HR]b^2E  
public class QuickSort implements SortUtil.Sort{ r..\(r  
V\Rbnvq  
/* (non-Javadoc) >Efv?8$E\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }9jy)gF*e  
*/ TR]~r2z  
public void sort(int[] data) { ;g*ab  
quickSort(data,0,data.length-1); ><dSwwu  
} 8hGp?Ihu  
private void quickSort(int[] data,int i,int j){ /9;)zI  
int pivotIndex=(i+j)/2; _"=Yj3?G%  
file://swap <$_B J2Z  
SortUtil.swap(data,pivotIndex,j); *s<FEF  
9)'L,Xt4:T  
int k=partition(data,i-1,j,data[j]); RD<l<+C^~  
SortUtil.swap(data,k,j); $#1i@dI  
if((k-i)>1) quickSort(data,i,k-1); @MS;qoc  
if((j-k)>1) quickSort(data,k+1,j); l$z\8]x  
IA! ( 'Ks  
} tGe|@.!  
/** r1 )Og  
* @param data nxw]B"Eg  
* @param i 3w#kvtDVm  
* @param j Jn-iIl  
* @return =EgiV<6vcH  
*/ Rcfh*"k  
private int partition(int[] data, int l, int r,int pivot) { kT t;3Ia  
do{ /w$<0hH#'8  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (g*2OS  
SortUtil.swap(data,l,r); s `U.h^V  
} H[BY(a@c  
while(l SortUtil.swap(data,l,r); lZ'-?xo  
return l; 5v<BB`XWp  
} d~u+:[\=/  
y4^6I$M7V  
} M S)(\&N  
[RTB|0Q  
改进后的快速排序: POdk0CuX  
J.N%=-8  
package org.rut.util.algorithm.support; FhVi|V a  
-Xb]=Yf-  
import org.rut.util.algorithm.SortUtil; h/W@R_Y  
nJ<h}*[  
/** ^&>(_I\w.6  
* @author treeroot n(\5Z&  
* @since 2006-2-2 *W~+Nho.A  
* @version 1.0 9 N[k ?kUZ  
*/ s>~ h<B  
public class ImprovedQuickSort implements SortUtil.Sort { 6&5p3G{%0  
+ffs{g{  
private static int MAX_STACK_SIZE=4096; I@76ABu^  
private static int THRESHOLD=10; ^NKB  
/* (non-Javadoc) 96x0'IsaG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3R>U^ Y  
*/ u2,V34b-  
public void sort(int[] data) { ()i8 Qepo}  
int[] stack=new int[MAX_STACK_SIZE]; <iDqt5)N  
A8Tq2]"* S  
int top=-1; WB<_AIt+  
int pivot; H48`z'o  
int pivotIndex,l,r; %Aq+t&-BCX  
ppH5>Y 6c  
stack[++top]=0; &>y[5#qOl  
stack[++top]=data.length-1; , g\%P5  
aVcQ  
while(top>0){ +dIDFSd  
int j=stack[top--]; !c,=%4Pb  
int i=stack[top--]; J-yj&2  
r*CI6yP  
pivotIndex=(i+j)/2; b.V\E Ok  
pivot=data[pivotIndex]; 9un* 1%  
X;25G  
SortUtil.swap(data,pivotIndex,j); 6Tjj++b(*  
7.@$D;L9  
file://partition 1ga.%M*  
l=i-1; SUwSZ@l^|  
r=j; jSNUU.lur  
do{ }+";W)R  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (T+fO}0  
SortUtil.swap(data,l,r); *[K\_F?^h  
} p!5= 1$  
while(l SortUtil.swap(data,l,r); aD)XxXwozm  
SortUtil.swap(data,l,j); it V@U  
Sz4G,c  
if((l-i)>THRESHOLD){ ".aypD)W  
stack[++top]=i; I!'PvIyO  
stack[++top]=l-1; mqxgrb7  
} &s m7R i  
if((j-l)>THRESHOLD){ {KkP"j'7h  
stack[++top]=l+1; ti6\~SY  
stack[++top]=j; `\!oY;jk  
} IoUQ~JviA  
)c~1s  
} Hjl{M>z  
file://new InsertSort().sort(data); ` O;+N"v  
insertSort(data); zGKDH=Yy ;  
} 'wh2787  
/** Y JzKE7%CO  
* @param data m?LnO5Vs  
*/ %J)n#\  
private void insertSort(int[] data) { FnkB z5D  
int temp; 4?Mb>\n%<^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !&4<"wQ  
} ch2Qk8  
} 9nW/pv  
} (pY'v /a-  
cspO5S>#  
} )nJo\HFXv  
o#(z*v@  
归并排序: *5KV DOd  
:W]IJ mI\  
package org.rut.util.algorithm.support; #'"zyidu  
&n:3n  
import org.rut.util.algorithm.SortUtil; p4} ,xQzB  
8S;]]*cD~  
/** B I9~% dm  
* @author treeroot +<cvyg5U  
* @since 2006-2-2 h4@v. GI  
* @version 1.0 ,P G d  
*/ 3@u<Sa  
public class MergeSort implements SortUtil.Sort{ &S\q*H=}i  
u$T`Bn  
/* (non-Javadoc) {\tHS+]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?_Sf  
*/ n,KOQI;  
public void sort(int[] data) { \SB~rz"A  
int[] temp=new int[data.length]; 8J60+2Wa  
mergeSort(data,temp,0,data.length-1); \etuIFQ#U  
} jVh I`F{n  
SSi-Z  
private void mergeSort(int[] data,int[] temp,int l,int r){ WJH)>4M#  
int mid=(l+r)/2; UzLe#3MU  
if(l==r) return ; f? sW^ d;  
mergeSort(data,temp,l,mid); uXxc2}  
mergeSort(data,temp,mid+1,r); [8Zq 1tU;G  
for(int i=l;i<=r;i++){ B~p` 3rC  
temp=data; yc|j]?  
} OKDBzl  
int i1=l; FcR(uv<  
int i2=mid+1; P\"|b\O1  
for(int cur=l;cur<=r;cur++){ RS`]>K3t  
if(i1==mid+1) &?.k-:iN  
data[cur]=temp[i2++]; -C9 _gZ  
else if(i2>r) vo'=d"zm  
data[cur]=temp[i1++]; 6>I{Ik@>  
else if(temp[i1] data[cur]=temp[i1++]; D@[Mk"f  
else U p1&(  
data[cur]=temp[i2++]; .gPE Qc+D  
} O0?.$f9 s  
} 6#NptXB  
9v7l@2/  
} &_Py{Cv@Dw  
XY(3!>/eQ[  
改进后的归并排序: fV[(s7vW  
:*GLLjS;  
package org.rut.util.algorithm.support; R#ayN*  
sP1wO4M?{  
import org.rut.util.algorithm.SortUtil; x"kc:F  
E\U6n""]  
/** >Le L%$  
* @author treeroot 0Xmp)_vba  
* @since 2006-2-2 *&VH!K#@{  
* @version 1.0 Wb!"L`m  
*/ &Nx'Nq9y  
public class ImprovedMergeSort implements SortUtil.Sort { PCl@Ff  
TV$Pl[m   
private static final int THRESHOLD = 10; LqnN5l@ _B  
B~HA 32  
/* #*^vd{fl  
* (non-Javadoc) }kg?A oo  
* VV/6~jy0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lWj|7  
*/ Rpit>  
public void sort(int[] data) { -!E))|A  
int[] temp=new int[data.length]; nZ?BC O  
mergeSort(data,temp,0,data.length-1); r3X|*/  
} _%G)Uz{3  
>t2E034_  
private void mergeSort(int[] data, int[] temp, int l, int r) { %-? :'F!1  
int i, j, k; )zK`*Fa az  
int mid = (l + r) / 2; G{*m] 0Q  
if (l == r) 7_r$zEP6  
return; 4&r+K`C0  
if ((mid - l) >= THRESHOLD) 4am`X1YV#  
mergeSort(data, temp, l, mid); I8r5u=PH  
else &IGTCTBP  
insertSort(data, l, mid - l + 1); ODn6%fp%  
if ((r - mid) > THRESHOLD) i3I'n*  
mergeSort(data, temp, mid + 1, r); G%N/]]ll  
else (fON\)l  
insertSort(data, mid + 1, r - mid); X+;F5b9z  
'LZF^m _<<  
for (i = l; i <= mid; i++) { q1j<p)(  
temp = data; {~DYf*RZ  
} $Xf1|!W%a%  
for (j = 1; j <= r - mid; j++) { 5p6Kq=jhb  
temp[r - j + 1] = data[j + mid]; H!U\;ny  
} D8P<mIu}Y  
int a = temp[l]; 1aKYxjYM  
int b = temp[r]; uN bOtA  
for (i = l, j = r, k = l; k <= r; k++) { X%W_cb2  
if (a < b) { M0`nr}g  
data[k] = temp[i++]; 1Sox@Ko  
a = temp; &Im{p7gf!b  
} else { )e.Y"5My  
data[k] = temp[j--]; 6'y+Ev$9  
b = temp[j]; LO@.aJpp  
} 9"_JiX~3  
} I}/o`oc  
} %+oWW5q7  
?(GMe>  
/** [\CQ_qs|  
* @param data Z qX  U  
* @param l 7|3Qcn7P)@  
* @param i sZFIQ)b9  
*/ vlCjh! x  
private void insertSort(int[] data, int start, int len) { \a+F/I$hwa  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <mlQn?u  
} ! *\)7D  
} 2<}^m/}  
} LXj2gsURu%  
} TkhbnO g6  
9 O| "Ws>{  
堆排序: 4s/4z@3a  
,Iq+v  
package org.rut.util.algorithm.support; 6'W79  
6N(Wv0b $  
import org.rut.util.algorithm.SortUtil; KquHc-fzqr  
DG8]FhD^b  
/** ,p\^n`A32  
* @author treeroot i'J.c4  
* @since 2006-2-2 Nj||^k  
* @version 1.0 XOzPi*V**  
*/ yrO'15TB  
public class HeapSort implements SortUtil.Sort{ k:PO"<-U  
zR h1  
/* (non-Javadoc) BDZB;DPb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PCnE-$QH  
*/ %j=dKd>  
public void sort(int[] data) { I=l() ET=  
MaxHeap h=new MaxHeap(); +B^ / =3P  
h.init(data);  fI[tU(x  
for(int i=0;i h.remove(); Yo;/7gG>  
System.arraycopy(h.queue,1,data,0,data.length);  CJg &  
} O_0|Q@  
:gDIGBK,  
private static class MaxHeap{ r<V]MwO=  
uS bOGhP  
void init(int[] data){ 7{f&L '  
this.queue=new int[data.length+1]; @/H1}pM~  
for(int i=0;i queue[++size]=data; M_+&XLnzsJ  
fixUp(size); B1c`(mHl  
} \c>9f"jS_  
} LtbL[z>]  
)u]J`.OA  
private int size=0; Xhtc0\0"(  
tY !fO>Fn~  
private int[] queue; ZT4._|2  
<(`dU&&%"}  
public int get() { Mcc774'*9  
return queue[1]; nH}api^0A  
} "RuJlp  
A?|KA<&m#u  
public void remove() { l"o@.C} f/  
SortUtil.swap(queue,1,size--); "5Oog<  
fixDown(1); ]Rohf WHX  
} <M nzR  
file://fixdown mm/U9hbp%  
private void fixDown(int k) { ~6.AE/ow  
int j; ~!meO;|W  
while ((j = k << 1) <= size) { *!%y.$\cE  
if (j < size %26amp;%26amp; queue[j] j++; B<DvH"+$  
if (queue[k]>queue[j]) file://不用交换 P~redX=t@  
break; 'cy35M  
SortUtil.swap(queue,j,k); 'IP'g,o++  
k = j; }|H]>U&  
} ps"crV-W  
} bBAZr`<&U  
private void fixUp(int k) { $5r[YdnY<  
while (k > 1) { VF!?B>  
int j = k >> 1; S0/@y'q3en  
if (queue[j]>queue[k]) wX8T;bo&  
break; f"xi7vJv!f  
SortUtil.swap(queue,j,k); X3(:)zUL  
k = j; y`:}~nUdT  
} 8NudY3cU!  
} P[n` X  
[|d:QFx  
} v~q2D"  
]p(+m_F  
} Nz#T)MGO`  
Dk&cIZ43  
SortUtil: \:8~na+(  
k^ J~l=?v  
package org.rut.util.algorithm; Zq2dCp%  
z!)_'A  
import org.rut.util.algorithm.support.BubbleSort; Ul^/Dh  
import org.rut.util.algorithm.support.HeapSort; qCSJ=T;  
import org.rut.util.algorithm.support.ImprovedMergeSort;  "@Bc eD  
import org.rut.util.algorithm.support.ImprovedQuickSort; { > {|3  
import org.rut.util.algorithm.support.InsertSort; l?NRQTG  
import org.rut.util.algorithm.support.MergeSort; v#a`*^ ^  
import org.rut.util.algorithm.support.QuickSort; WSn^P~vC  
import org.rut.util.algorithm.support.SelectionSort; Z8(1QU,~2  
import org.rut.util.algorithm.support.ShellSort; } Ga@bY6  
dI5Z*"`R9  
/** ,]i ^/fT  
* @author treeroot UA!h[+Z  
* @since 2006-2-2 9b@L^]Kg  
* @version 1.0 O}MY:6Pe  
*/ <wFR%Y/j  
public class SortUtil { a~Sf~ka  
public final static int INSERT = 1; Op,Ce4A  
public final static int BUBBLE = 2; "V&2 g?  
public final static int SELECTION = 3; 1HskY| X  
public final static int SHELL = 4; ro6|N?'  
public final static int QUICK = 5; +)^F9LPl  
public final static int IMPROVED_QUICK = 6; ]3 YJE P  
public final static int MERGE = 7; k.rP}76  
public final static int IMPROVED_MERGE = 8; H?sl_3- #  
public final static int HEAP = 9; ta> g:  
H4 Ca+;  
public static void sort(int[] data) { MxuwEV|^  
sort(data, IMPROVED_QUICK);  02Ur'|  
} A-~#ydv  
private static String[] name={ `~WxMY0M  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v!E0/ gD  
}; 9qIUBHe  
8X!UtHml  
private static Sort[] impl=new Sort[]{ FAjO-T4(  
new InsertSort(), VQZ3&]o  
new BubbleSort(), "FT5]h  
new SelectionSort(), Cfyas'  
new ShellSort(), )-Zpr1kD  
new QuickSort(), D%LqLLD  
new ImprovedQuickSort(), Gnj;=f  
new MergeSort(), rFM`ne<zh  
new ImprovedMergeSort(), *qAF#  
new HeapSort() ?g}n$%*5y!  
}; #E2`KGCzW  
GD}3 r:wDs  
public static String toString(int algorithm){ *;7&  
return name[algorithm-1]; 7OS\j>hb~  
} Q nDymVF  
S6 $S%$  
public static void sort(int[] data, int algorithm) { ndOPD]A'  
impl[algorithm-1].sort(data); m`g%\o^6i  
} 0'Tq W9P  
mbsdiab#N  
public static interface Sort { T73oW/.0X?  
public void sort(int[] data); v>c[wg9P  
} vYL{5,t {1  
b)en/mz  
public static void swap(int[] data, int i, int j) { )*G3q/l1u6  
int temp = data; %aaOws  
data = data[j]; '<!/\Jz9l  
data[j] = temp; YZ7rs] A  
} tRS^|??  
} H'<9;bD -  
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