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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。 3e$&rpv  
插入排序: Oa=0d;_  
o|G.tBpKg  
package org.rut.util.algorithm.support; eX$P k:  
`-S6g^Y  
import org.rut.util.algorithm.SortUtil; 0%.l|~CE&  
/** )}\T~#Q]y  
* @author treeroot rJK3;d?E  
* @since 2006-2-2 n\ aG@X%oq  
* @version 1.0 pulE6T7 x  
*/ niY9`8  
public class InsertSort implements SortUtil.Sort{ )y-y-B=+T  
C#X|U2$  
/* (non-Javadoc) =if5$jE3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OL&ku &J_  
*/ L2Uk/E  
public void sort(int[] data) { TGu`r>N51  
int temp; T:S+P t~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  g!5`R`7  
} x]6OE]]8L  
} iO4YZ!  
} t>><|~wp  
tn201TDZ]=  
} j.X3SQb4G  
1QXv}36#3n  
冒泡排序: <e|I?zI9-  
hb7H- Z2  
package org.rut.util.algorithm.support; 4)ez0[i$X  
I?@9;0R  
import org.rut.util.algorithm.SortUtil; >lxhXYp  
HjUs}#</  
/** dN J2pfvv  
* @author treeroot he;;p="!*  
* @since 2006-2-2 &^^zm9{  
* @version 1.0 *?%DdVrO@  
*/ #WlIH7J8Tc  
public class BubbleSort implements SortUtil.Sort{ k2muHKBlk  
n%? bMDS  
/* (non-Javadoc) jD9 ^DzFx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gy/z;fB  
*/ yU3fM?a  
public void sort(int[] data) { uqPagt<  
int temp; Lh0Pvq0C  
for(int i=0;i for(int j=data.length-1;j>i;j--){ vFXih'=_  
if(data[j] SortUtil.swap(data,j,j-1); @D&VOJV  
} .p&4]6  
} uG@Nubdwuy  
} Jj}+tQ f  
} w=I8f}(  
Zo}wzY~x>I  
} }6MHIr=o  
}$r/#F/Fn  
选择排序: vL(7|K  
Gb.r!W8  
package org.rut.util.algorithm.support; @13vn x  
;QQLYT  
import org.rut.util.algorithm.SortUtil; .~qu,q7k~  
Zoh[tO   
/** k2o98bK&;  
* @author treeroot Q.Tn"rE|  
* @since 2006-2-2 8R}CvzI  
* @version 1.0 NL%5'8F>,  
*/ FP=%e]vJ  
public class SelectionSort implements SortUtil.Sort { sA=WU(4^  
=b2/g [  
/* #Q}`kFB`  
* (non-Javadoc) 4% )I[-sH  
* -R@mnG 5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #x! h BS!  
*/  2bwf(  
public void sort(int[] data) { 'Y{fah  
int temp; fF37P8Ir  
for (int i = 0; i < data.length; i++) { ={y Mk  
int lowIndex = i; < TJzp  
for (int j = data.length - 1; j > i; j--) { ],9%QE  
if (data[j] < data[lowIndex]) { Xc -'&"  
lowIndex = j; FB3C'!'<)  
} oHH-joYnn  
} jFfuT9oId  
SortUtil.swap(data,i,lowIndex); )e`$'y@L$  
} qB PUB(  
} =Is.T  
v:kTZB  
} ["VUSa  
"HSAwe`5jU  
Shell排序: A46z2  
[`^5Zb  
package org.rut.util.algorithm.support; '=}F}[d"kk  
X8aNl"x  
import org.rut.util.algorithm.SortUtil; v1wMXOR  
!2>MaV1,  
/** ^3?]S{1/#  
* @author treeroot 1 i # .h$  
* @since 2006-2-2 <hazrKUn  
* @version 1.0 + >?"P^  
*/ x TEDC,B  
public class ShellSort implements SortUtil.Sort{ z)N8#Y~vn  
|9c J O@  
/* (non-Javadoc) }_m/3*x_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]G m"U!h*  
*/ p\T.l <p  
public void sort(int[] data) { 70IBE[T&  
for(int i=data.length/2;i>2;i/=2){ >DqV^%2l  
for(int j=0;j insertSort(data,j,i); g9~>mJR  
} D0NSzCHx  
} HC4qP9Gs  
insertSort(data,0,1); x`/"1]Nf  
} :s|" ZR  
t_cNH@^3<3  
/** !*#2~$:  
* @param data I[u%k ir  
* @param j $2N)m:X0  
* @param i uh#"4-v  
*/ }: v&Nc  
private void insertSort(int[] data, int start, int inc) { F"o K*s  
int temp; I\eM8`Y$  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2 )oT\m  
} Kppi N+||  
} eP6`"<UM  
} /, T@/  
uR#aO''  
} @}sxA9 a  
eiE36+'>b  
快速排序: zi M~V'  
0~2~^A#]\  
package org.rut.util.algorithm.support; p2Yc:9r9+A  
_?Q0yVH;,  
import org.rut.util.algorithm.SortUtil; {akSK  
I29aja  
/** S[g{ )p)  
* @author treeroot hfzmv~*  
* @since 2006-2-2 |Et8FR3[m  
* @version 1.0 \/E+nn\)  
*/ M'gw-^(  
public class QuickSort implements SortUtil.Sort{ A#/O~-O^  
);-?~   
/* (non-Javadoc) RlJt+lnV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?J[m)Uo/ K  
*/ "_!D b&AH  
public void sort(int[] data) { GZ xG!r -  
quickSort(data,0,data.length-1); 3^NHV g  
} BC|=-^(  
private void quickSort(int[] data,int i,int j){ [Aqy%mbG  
int pivotIndex=(i+j)/2; :Y/>] tS4  
file://swap VHwAO:+-  
SortUtil.swap(data,pivotIndex,j); _`'VOY`o  
Wx~N1+  
int k=partition(data,i-1,j,data[j]); /{h@A~<96  
SortUtil.swap(data,k,j); /1A3 Sw  
if((k-i)>1) quickSort(data,i,k-1); NrQGoAOw  
if((j-k)>1) quickSort(data,k+1,j); -2Bkun4Pt  
#6w\r&R6  
} %NH#8#';2  
/** /Z':wu\  
* @param data vRp#bScc  
* @param i xw[KP [(  
* @param j 4}C^s\?z  
* @return 1< 22,  
*/ `v;9!ReZV  
private int partition(int[] data, int l, int r,int pivot) { ,ddoII  
do{ ;h|zNx0  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Yi?X|"\`  
SortUtil.swap(data,l,r); >J4Tk1//b  
} ([vyY}43h  
while(l SortUtil.swap(data,l,r); 9 GEMmo3  
return l; Q)`3&b  
} QYl Pr&O9  
2VB|a;Mo  
} ^g^R[8  
"gaurr3  
改进后的快速排序: $hND!T+;  
'IVNqfC)u  
package org.rut.util.algorithm.support; u`K)dH,  
q.xt%`@aA  
import org.rut.util.algorithm.SortUtil; ~8fy qE$  
7sgK+ ip  
/** wlSl ~A/s  
* @author treeroot zVeQKN9^Z  
* @since 2006-2-2  Xaz`L  
* @version 1.0 ,gag_o{*a  
*/ x}\_o< d  
public class ImprovedQuickSort implements SortUtil.Sort { 32#|BBY  
M`_RkDmy<  
private static int MAX_STACK_SIZE=4096; Tf0"9  
private static int THRESHOLD=10; H rMH  
/* (non-Javadoc) -L zx3"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hrT!S  
*/ hh%f mc  
public void sort(int[] data) { pK_n}QW  
int[] stack=new int[MAX_STACK_SIZE]; Q:nBx[%  
0j@nOj(3  
int top=-1; #ZzFAt  
int pivot; W>^WNo3YQ$  
int pivotIndex,l,r; & B CA  
kMJf!%L(  
stack[++top]=0; ,Z_aZD4  
stack[++top]=data.length-1; YB;q5[  
?o0ro?9j  
while(top>0){ 3u&>r-V6Fn  
int j=stack[top--]; *?l-:bc]  
int i=stack[top--]; $C&y-Hnar  
H]zi>;D  
pivotIndex=(i+j)/2; 6R`q{}.  
pivot=data[pivotIndex]; DL*/hbG  
KM'*+.I  
SortUtil.swap(data,pivotIndex,j); VaV(+X  
|+-D@22 y  
file://partition *O5Ysk^|  
l=i-1; |{STkV]  
r=j; oSAO0h>0N  
do{ @ OSSqH  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -XuRQ_)nG  
SortUtil.swap(data,l,r); .zm/GtOV@  
} M/Twtq-`H  
while(l SortUtil.swap(data,l,r); ON.1'Wk?  
SortUtil.swap(data,l,j); !L|}/u3v  
lla?;^,  
if((l-i)>THRESHOLD){ LtJl\m.th  
stack[++top]=i; bi01]  
stack[++top]=l-1; #L3heb&9  
} obRYU|T  
if((j-l)>THRESHOLD){ W{)RJ1  
stack[++top]=l+1; W##~gqZ/  
stack[++top]=j; U3oMY{{E J  
} ff{ L=uj  
T(@J]Y-  
} w# iezo. 0  
file://new InsertSort().sort(data); J>o%6D  
insertSort(data); aAT!$0H  
} CC,f*I  
/** ,\%qERk  
* @param data 2kXa  
*/ qD] &&"B  
private void insertSort(int[] data) { Exu5|0AAE  
int temp; WVa-0;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O7})1|>1  
} i(hL6DLD  
} p-qt?A  
} mFGiysM  
DI>SW%)>  
} d?9b6k?  
eH0^d5bH  
归并排序: N(7UlS,u'  
BQOit.  
package org.rut.util.algorithm.support; P{2ue`w[  
1:.I0x!  
import org.rut.util.algorithm.SortUtil; ~uUN\qx52  
QTC-W2t]  
/** XCP/e p  
* @author treeroot <3SO1@?  
* @since 2006-2-2 =sIkA)"!=  
* @version 1.0 -wdd'G  
*/ X5Fi , /H  
public class MergeSort implements SortUtil.Sort{ 5`3Wua  
>508-)'  
/* (non-Javadoc) SJ%h.u@&@F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (X{o =co,  
*/ llK7~uOC  
public void sort(int[] data) { uXm_ pQpF  
int[] temp=new int[data.length]; %fF0<c^-U  
mergeSort(data,temp,0,data.length-1); eX 0due  
} A,u}p rwH  
H,Y+n)5  
private void mergeSort(int[] data,int[] temp,int l,int r){ G+S MH`h  
int mid=(l+r)/2; # fe%E.  
if(l==r) return ; ^U8^P]{R|  
mergeSort(data,temp,l,mid); M hwuh`v%  
mergeSort(data,temp,mid+1,r); 5ltrr(MeD  
for(int i=l;i<=r;i++){ wk@S+Q  
temp=data; 23iMG]J&  
} q+J;^u"E  
int i1=l; zm{U.Q  
int i2=mid+1; .@kjC4m  
for(int cur=l;cur<=r;cur++){ 0rA&Q0  
if(i1==mid+1) zHg1K,t:  
data[cur]=temp[i2++]; "NM SLqO  
else if(i2>r) Mr}K-C?ge  
data[cur]=temp[i1++]; YD@n8?~$$  
else if(temp[i1] data[cur]=temp[i1++]; LJ{P93aq`^  
else {;2Gl$\r  
data[cur]=temp[i2++]; D=^|6}  
} 7jzd I!  
} kp=wz0#  
)J>-;EYb8  
} 0;/},B[A  
-|WQs'%O  
改进后的归并排序: '[zy%<2sL  
GU,ztO.w3  
package org.rut.util.algorithm.support; ?E6 C|A$I  
cq0#~20  
import org.rut.util.algorithm.SortUtil; +\yQZ{4'@  
-"} mmTa*<  
/** j` 5K7~hv  
* @author treeroot mh :eUFe  
* @since 2006-2-2 ^!j,d_)b!  
* @version 1.0 huTWoMU  
*/ n]< >$  
public class ImprovedMergeSort implements SortUtil.Sort { ~6!TMVr  
5f- eWW]!  
private static final int THRESHOLD = 10; tXg>R _\C  
L Rn)  
/* p3W-*lE  
* (non-Javadoc) |qq7vx  
* g54b}vzm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y yqya[-11  
*/ Kd|@  
public void sort(int[] data) { @ rG=>??k  
int[] temp=new int[data.length]; @@pI>~#zh  
mergeSort(data,temp,0,data.length-1); =hq+9 R8=  
} #k/NS  
9J(jbJ7p  
private void mergeSort(int[] data, int[] temp, int l, int r) { Pq<]`9/w^w  
int i, j, k; )ePQN~#K}  
int mid = (l + r) / 2; lG/h[  
if (l == r) d>-k-X-[  
return; KwxO%/-}S  
if ((mid - l) >= THRESHOLD) AD0pmD  
mergeSort(data, temp, l, mid); cd3;uB4\,  
else ZGgM- O1  
insertSort(data, l, mid - l + 1); L; (J6p]h  
if ((r - mid) > THRESHOLD) b!gvvg<  
mergeSort(data, temp, mid + 1, r); g7g^iLU  
else w\{oOlE  
insertSort(data, mid + 1, r - mid); 56l1&hp8In  
NzAMX+L  
for (i = l; i <= mid; i++) { VPI;{0kh  
temp = data; ^E}};CsT  
} LmjzH@3  
for (j = 1; j <= r - mid; j++) { /xh/M@G3  
temp[r - j + 1] = data[j + mid]; 1 [D,Mu%E  
} 1@6FV x  
int a = temp[l]; FJH'!P\  
int b = temp[r]; !W48sZr1&  
for (i = l, j = r, k = l; k <= r; k++) { _gn`Y(c$%  
if (a < b) { ]`H8r y2  
data[k] = temp[i++]; 6Sr}I,DG  
a = temp; cwC-)#R']  
} else { WcZck{ehd  
data[k] = temp[j--]; o>?#$~XNv  
b = temp[j]; k=``Avp?  
} 01&J7A2  
} )2dTgvy  
} #57D10j  
;'7gg]  
/** ? 1 ~C`I;  
* @param data ` Clh;  
* @param l 5fuB((fd(  
* @param i jFPD SR5  
*/ "inXHxqu/J  
private void insertSort(int[] data, int start, int len) { :+Okv$v4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); k:sFI @g  
} (N/KP+J$n  
} SXF~>|h5<  
} e>~7RN  
} Puodsd  
@p$$BUb  
堆排序: v#`7,::  
n04lTME  
package org.rut.util.algorithm.support; A.>L>uR  
fXfO9{E  
import org.rut.util.algorithm.SortUtil; l6z}D; 4  
{wy#HYhv  
/** \`N<0COP  
* @author treeroot  bMDj+i  
* @since 2006-2-2 Xm I63W*  
* @version 1.0 yf@DaIG  
*/ H;k-@J  
public class HeapSort implements SortUtil.Sort{ *wNO3tP't  
Di>B:=  
/* (non-Javadoc) /+g)J0u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lcow2 SbH  
*/ C'oNGOEd  
public void sort(int[] data) { , 3p$Z  
MaxHeap h=new MaxHeap(); o@j)clf  
h.init(data); +L>?kr[i[  
for(int i=0;i h.remove(); WB(Gx_o3  
System.arraycopy(h.queue,1,data,0,data.length); _+NM<o#A  
} YfZ96C[a  
f>kW\uC  
private static class MaxHeap{ i?D KKjN$  
CF0i72ul5  
void init(int[] data){ jp|1S^b  
this.queue=new int[data.length+1]; *@SZ0   
for(int i=0;i queue[++size]=data; Im<(  
fixUp(size); d^W1;0  
} ,'z=cB`+o  
} eR*y<K(d  
._A@,]LS}  
private int size=0; ^Z`?mNq9  
lVR a{._m  
private int[] queue; Kh,zp{  
JVawWw0q  
public int get() { :0'2m@x~  
return queue[1]; )"4v0dv  
} *p=a-s5-  
.^aqzA=]  
public void remove() { u{d\3-]/  
SortUtil.swap(queue,1,size--); W&HF*Aw  
fixDown(1); Tn"/EO^N  
} T2p;#)dP  
file://fixdown }[c ,/NH  
private void fixDown(int k) { zd-qQ.j0  
int j; >2[nTfS  
while ((j = k << 1) <= size) { Vb$4'K '  
if (j < size %26amp;%26amp; queue[j] j++; A[6D40o  
if (queue[k]>queue[j]) file://不用交换 R!2oj_  
break; =&YhA}l\O  
SortUtil.swap(queue,j,k); .sE5QRVc  
k = j; Q( g&/O  
} +:jx{*}jo  
} 3Lw&HtH  
private void fixUp(int k) { GT3 ?)g{Z  
while (k > 1) { 4ht+u  
int j = k >> 1; RI</T3%~  
if (queue[j]>queue[k]) 1SO!a R#g  
break; <-rw>,  
SortUtil.swap(queue,j,k); #yi&-9B  
k = j; G Rq0nhJ  
} O[RivHCY  
} yK"T5^o  
!,z ==Qp|v  
} N,F$^ q6  
d@aPhzLu  
} .|Y&,?k| Y  
7w?V0pLwn8  
SortUtil: unZYFA}(  
A1uo@W  
package org.rut.util.algorithm; `Eq~W@';Q0  
MeMSF8zSQ  
import org.rut.util.algorithm.support.BubbleSort; NPY\ >pf  
import org.rut.util.algorithm.support.HeapSort; f&ri=VJY\T  
import org.rut.util.algorithm.support.ImprovedMergeSort; &w"1VOV<  
import org.rut.util.algorithm.support.ImprovedQuickSort; lw j,8  
import org.rut.util.algorithm.support.InsertSort; 0<'Q;'2* L  
import org.rut.util.algorithm.support.MergeSort; /ij)[WK@  
import org.rut.util.algorithm.support.QuickSort; zvAUF8'_  
import org.rut.util.algorithm.support.SelectionSort; SG@-b(  
import org.rut.util.algorithm.support.ShellSort; 2T >K!jS  
~+OAAkJ9  
/** G>f2E49BXt  
* @author treeroot XjINRC8^4  
* @since 2006-2-2 mNDz|Ln  
* @version 1.0 Ap)[;_9BD  
*/ f9FEH7S68  
public class SortUtil { Fh0cOp(  
public final static int INSERT = 1; U\~9YX8  
public final static int BUBBLE = 2; 4_&+]S  
public final static int SELECTION = 3; oTLA&dy@  
public final static int SHELL = 4; .m/$ku{/J  
public final static int QUICK = 5; `j)S7KN  
public final static int IMPROVED_QUICK = 6; L$rMfe S  
public final static int MERGE = 7; ]R?{9H|jwE  
public final static int IMPROVED_MERGE = 8; glo Y@k~  
public final static int HEAP = 9; fqp!^-!X  
i$ CN{c*  
public static void sort(int[] data) { gR\-%<42  
sort(data, IMPROVED_QUICK); nEgDwJ<wl  
} %TUvH>;0  
private static String[] name={ M|DVFC  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5%)<e-  
}; mMSQW6~j  
<g3)!VR^q  
private static Sort[] impl=new Sort[]{ C(@#I7G  
new InsertSort(), 4M,Q{G|e  
new BubbleSort(), Z(c3GmY  
new SelectionSort(), -{O>'9'1A  
new ShellSort(), JVxGS{Z  
new QuickSort(), lo< t5~GQ  
new ImprovedQuickSort(), R.'-jvO  
new MergeSort(), h}$g}f%$+  
new ImprovedMergeSort(), lNRGlTD%  
new HeapSort() SR8)4:aKW  
}; Q!*}^W  
|S0nR<x-M  
public static String toString(int algorithm){ rK@XC +`S  
return name[algorithm-1]; Vz @2_k   
} vmsrypm  
%pG^8Q()   
public static void sort(int[] data, int algorithm) { c+A$ [  
impl[algorithm-1].sort(data); 4-voR5Fd  
} }"x#uG  
]:_s7v  
public static interface Sort { 8Z[YcLy"({  
public void sort(int[] data); =9yh<'583  
} T j(MIFi|5  
Z`]r)z%f  
public static void swap(int[] data, int i, int j) { ms%RNxU4:  
int temp = data; hteAuz4H  
data = data[j]; 4}xw&x  
data[j] = temp; 2&o jQhe  
} I6-.;)McO  
} }N,$4h9Dj  
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