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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。 R4ht6Vm3g)  
插入排序: [=B$5%A  
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package org.rut.util.algorithm.support; |#6QThK  
upj]6f"(  
import org.rut.util.algorithm.SortUtil; .h0b~nI>>  
/** &>e-(4Xu  
* @author treeroot N2.AKH  
* @since 2006-2-2 :Mm3 gW)  
* @version 1.0 zIP6\u  
*/ ,g%&|FAP  
public class InsertSort implements SortUtil.Sort{ 5~mh'<:  
Z2im@c67{  
/* (non-Javadoc) "D?z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hwo$tVa:=  
*/ Y"OG@1V;8  
public void sort(int[] data) { tmqY2.   
int temp; 6#IU*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JQ4{` =,b  
} (JM4R8fR&  
} %tG*C,l]  
} 22f`LoM  
b~nAPY6  
} OKF tl  
dCj,b$  
冒泡排序: yHxosxd<*  
M33_ja+L  
package org.rut.util.algorithm.support; /-bO!RTwf  
aW!@f[%~F  
import org.rut.util.algorithm.SortUtil; A:7k+4  
JK.ZdY%  
/** 3;% 5Yu  
* @author treeroot ^ bEc6`eE  
* @since 2006-2-2 L%>n>w  
* @version 1.0 R(n^)^?  
*/ =gcM%=*'  
public class BubbleSort implements SortUtil.Sort{ *N{emwIq  
2h[85\4  
/* (non-Javadoc) x3PD1JUf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YZ%Hu)  
*/ P-ri=E}>  
public void sort(int[] data) { TDd{.8qf  
int temp; 6xD#?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ hE h}PX:  
if(data[j] SortUtil.swap(data,j,j-1); w`q%#q Rk  
} ew"v{=X  
} e9Nk3Sj]  
} F<!)4>2@  
} ?B :a|0pf  
1KjU ] r2  
} )Tk1 QHU  
6;|n]m\Vd  
选择排序: ]O]GeAGC2  
Z!U)I-x&  
package org.rut.util.algorithm.support; M`ip~7"  
Yv:55+e!|  
import org.rut.util.algorithm.SortUtil; y#XbJuN/  
}#X8@  
/** It{;SKeo  
* @author treeroot [,TkFbDq"J  
* @since 2006-2-2 JwJ7=P=c  
* @version 1.0 PssMTEf  
*/ 7EXI6jGJ|  
public class SelectionSort implements SortUtil.Sort { )c8j}  
otk}y8  
/* U#3J0+!  
* (non-Javadoc) }<dRj  
* `F/Tv 5@L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yz0zFfiX  
*/ A<W 6=5h  
public void sort(int[] data) { ?2>FdtH  
int temp; B, 9w0  
for (int i = 0; i < data.length; i++) { \?jeWyo  
int lowIndex = i; WD1G&5XP  
for (int j = data.length - 1; j > i; j--) { ,Jd ',>3  
if (data[j] < data[lowIndex]) { W^s ;Bi+Nw  
lowIndex = j; )n,P"0  
} zA[0mkC?$  
}  4._( |  
SortUtil.swap(data,i,lowIndex); J_FNAdQt  
} up'Tit  
} );FJx~b  
lGVEpCS}  
} L(U"U#QZ  
F4K0) ;  
Shell排序: 6H'HxB4  
/ z}~zO  
package org.rut.util.algorithm.support; Q:5KZm[[  
VO"("7L  
import org.rut.util.algorithm.SortUtil; Ntbg`LGf'!  
-=(!g&0  
/** Dq)j:f#QM  
* @author treeroot s M+WkN}{  
* @since 2006-2-2 e6!LSx}y  
* @version 1.0 tzs</2 G,  
*/ yV"ZRrjO'Z  
public class ShellSort implements SortUtil.Sort{ G_SG  
s&NX@  
/* (non-Javadoc) 'D @-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v$N|"o""  
*/ @WI2hHD  
public void sort(int[] data) { {Lm~r+ U  
for(int i=data.length/2;i>2;i/=2){ ;g~TWy^o  
for(int j=0;j insertSort(data,j,i); 6,9o>zT%H  
} ~j<+k4I~  
} 3"P }n  
insertSort(data,0,1); 5sb\r,kW  
} eQ&ZX3*}  
Ry|!pV  
/** 8KRba4[  
* @param data f/V 2f].  
* @param j 7P9=)$(EH  
* @param i 1Uqu> '  
*/ L@gWzC~?Q  
private void insertSort(int[] data, int start, int inc) { LU9A#  
int temp; "70WUx(\t  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G8;w{-{m  
} S*n@81Z  
} 0A( +ZMd  
} =" g*\s?r  
K#U<ib-v  
} phgm0D7  
$ mI0Bk  
快速排序: vPD] hs  
tQylT0'[+o  
package org.rut.util.algorithm.support; ~I} &V T  
$5*WLG&AK  
import org.rut.util.algorithm.SortUtil; Z"AQp _  
rSJ9 v :  
/** ?|39u{  
* @author treeroot 9[^gAR  
* @since 2006-2-2 d,=r 9.  
* @version 1.0 q5#J~n8Wr  
*/ y>aZXa  
public class QuickSort implements SortUtil.Sort{ c.j$9=XLBG  
w.0qp)}  
/* (non-Javadoc) <^lRUw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -k"^o!p  
*/ }|XtypbL  
public void sort(int[] data) { Q^#;WASi  
quickSort(data,0,data.length-1); B|&"#Q  
} EcCFbqS4W  
private void quickSort(int[] data,int i,int j){ IqD_GL)Ms  
int pivotIndex=(i+j)/2; M-giR:,  
file://swap AqV7\gdOC  
SortUtil.swap(data,pivotIndex,j); pi ,eIm  
o5Q{/  
int k=partition(data,i-1,j,data[j]); IzpZwx^3''  
SortUtil.swap(data,k,j); 8A+SjJ4$  
if((k-i)>1) quickSort(data,i,k-1); GO^_=EMR[  
if((j-k)>1) quickSort(data,k+1,j); G rk@dZI  
:at$HCaK  
} Ba/Yl  
/** ]~E0gsq  
* @param data LH@j8YB5u  
* @param i Yx>"bv  
* @param j A$a1(8H  
* @return afb+GA!  
*/ Q !(pE&  
private int partition(int[] data, int l, int r,int pivot) { (owrdPT!  
do{ !OuWPH. :  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &Y^WP?HS  
SortUtil.swap(data,l,r); yfC^x%d7G  
} 1hziXC0WY  
while(l SortUtil.swap(data,l,r); th&[Nt7  
return l; P [k$vD  
} T"0,r $3:  
l!g]a2x*  
} $.[#0lCI  
pe{; ~-|6  
改进后的快速排序: y})70w@ +_  
H[='~%D  
package org.rut.util.algorithm.support; .k0~Vh2u  
A21N|$[  
import org.rut.util.algorithm.SortUtil; YR;^hs?  
<E0UK^-}  
/** |USX[j m\  
* @author treeroot 1 %,a =,v  
* @since 2006-2-2 b/Xbs0q  
* @version 1.0 ME=/|.}D<  
*/ Vl2XDkhq  
public class ImprovedQuickSort implements SortUtil.Sort { )u qA(R>  
F<(i.o(  
private static int MAX_STACK_SIZE=4096; Z%x\~ )~  
private static int THRESHOLD=10; ]hbyELs  
/* (non-Javadoc) ._+J_ts  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -G|G_$9  
*/ /0eYMG+K=  
public void sort(int[] data) { rQaxr!  
int[] stack=new int[MAX_STACK_SIZE]; W[}s o6  
jvQ*t_L  
int top=-1; | a# f\  
int pivot; Q;D0<Bv  
int pivotIndex,l,r; U_{Ux 2  
<!pvqNApg  
stack[++top]=0; <bD>m[8,  
stack[++top]=data.length-1; EVNY*&p  
L^{|uP15N  
while(top>0){ PtTHPAKj  
int j=stack[top--]; 5=1^T@~#&  
int i=stack[top--]; D2,z)O%VK  
wWp(yvz  
pivotIndex=(i+j)/2; =lVK IW  
pivot=data[pivotIndex]; u@4V7;L  
P(K>=O  
SortUtil.swap(data,pivotIndex,j); MXyaE~LK  
hsw9(D>jp  
file://partition e A}%C.ZR  
l=i-1; gc?#pP  
r=j; _IdRF5<4  
do{ zH*KYB  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l3IWoa&sh  
SortUtil.swap(data,l,r); 1Zi,b  
} nO)X!dp}J  
while(l SortUtil.swap(data,l,r); =k oSUVO0  
SortUtil.swap(data,l,j); 51QRM32Y  
7k(Kq5w.  
if((l-i)>THRESHOLD){ t&(PN%icD  
stack[++top]=i; gy;+_'.j   
stack[++top]=l-1; :Pv*, qHE  
} wGZR31  
if((j-l)>THRESHOLD){ =2 *rA'im  
stack[++top]=l+1; V$uk6#  
stack[++top]=j; W mm4hkf  
} %.z,+Zz?  
A?@@*$&  
} WsD M{1c  
file://new InsertSort().sort(data); 1NcCy! +  
insertSort(data); ,do58i K  
}  HyR!O>  
/** 41_SRh7N  
* @param data Wn>@9"  
*/ MG?0>^F  
private void insertSort(int[] data) { }E7:ihy  
int temp; Q 3y;$"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  3S&U!  
} }>[G5[ \  
} CV{r5Sye  
} 1=]kWp`i  
.%82P(  
} Kn?lHH*w7  
-!\fpl{  
归并排序: )nd\7|5#  
@l0|*lo%  
package org.rut.util.algorithm.support; .T*GN|@$!  
5IbJ  
import org.rut.util.algorithm.SortUtil; 0j_bh,zG#  
8O"U 0  
/** EutP\K_Y  
* @author treeroot 9Mgq1Z  
* @since 2006-2-2 d|iy#hy"_  
* @version 1.0 Q*XE h  
*/ q}FVzahv  
public class MergeSort implements SortUtil.Sort{ aBzszp]l+  
@+WQ ^  
/* (non-Javadoc) e hA;i.n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 42\-~]  
*/ Nlj^D m  
public void sort(int[] data) { @EoZI~  
int[] temp=new int[data.length]; )aX2jSp  
mergeSort(data,temp,0,data.length-1); v<9&B94z  
} Cz8f1suO4  
1LY8Ma]E  
private void mergeSort(int[] data,int[] temp,int l,int r){ c~o+WI Ym  
int mid=(l+r)/2; M+!x}$ &v  
if(l==r) return ; w%zRHf8C  
mergeSort(data,temp,l,mid); O MX-_\")  
mergeSort(data,temp,mid+1,r); A4QcQ"  
for(int i=l;i<=r;i++){ &ciN@nJ|$z  
temp=data; S{K0.<,E  
} \`w4|T  
int i1=l; u(!&:A9JFd  
int i2=mid+1; oW;6h.  
for(int cur=l;cur<=r;cur++){ @WKzX41'  
if(i1==mid+1) 99EXo+g  
data[cur]=temp[i2++]; [0UGuj  
else if(i2>r) eVl'\aUd  
data[cur]=temp[i1++]; J/6`oh?,Q  
else if(temp[i1] data[cur]=temp[i1++]; |D.O6?v@  
else ph2$oO 6,  
data[cur]=temp[i2++]; Oi} T2I  
} &Sp -w?kM  
} nP UqMn'  
k'X;ruQ:tF  
}  >Ng)k]G  
dz[ bm< T7  
改进后的归并排序: #pHs@uvO  
}!i` 0p  
package org.rut.util.algorithm.support; NS C/@._  
sFDG)  
import org.rut.util.algorithm.SortUtil; W~Z<1[  
a83g\c5   
/** <*EZ@XoN>  
* @author treeroot LC0d/hM  
* @since 2006-2-2 |*mL1#bB  
* @version 1.0 Xes|[*Y!V  
*/ |7@O( $b  
public class ImprovedMergeSort implements SortUtil.Sort { AddeaB5<  
ejXMKPE;  
private static final int THRESHOLD = 10; *U#m+@\0  
~3RC>8*Qw  
/* ]Zf6Yw.Y  
* (non-Javadoc) mNYl@+:psj  
* 0L^u2HZYL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {k(eNr,  
*/ $t-n'Qh^2  
public void sort(int[] data) { jtm?z c  
int[] temp=new int[data.length]; N:"C+ a(  
mergeSort(data,temp,0,data.length-1); `8\Ja$ =  
} /VHi >  
0qFH s  
private void mergeSort(int[] data, int[] temp, int l, int r) { MEiRj]t  
int i, j, k; |3? 8)z\n  
int mid = (l + r) / 2; B%\gkl  
if (l == r) 5HS~op2n/  
return; q*)+K9LRk  
if ((mid - l) >= THRESHOLD) rbqo"g`  
mergeSort(data, temp, l, mid); ,LOQDIyn  
else c6Q(Ygc  
insertSort(data, l, mid - l + 1); Ejq#~Zhr!  
if ((r - mid) > THRESHOLD) kVS?RHR  
mergeSort(data, temp, mid + 1, r); ]+H ?@*b`  
else X%9*O[6{  
insertSort(data, mid + 1, r - mid); 4F MAz^  
Br d,Eg  
for (i = l; i <= mid; i++) { Vga-@  
temp = data; 2yo cu!4l  
} :1 )DqoAJ  
for (j = 1; j <= r - mid; j++) { O''y>N9  
temp[r - j + 1] = data[j + mid]; o0z67(N&g  
} W2wpcc  
int a = temp[l]; 4O{Avt7C  
int b = temp[r]; nkeI60  
for (i = l, j = r, k = l; k <= r; k++) { B ?%L  
if (a < b) { 'PWQnt_U  
data[k] = temp[i++]; s4T}Bs r  
a = temp; =sOo:s  
} else { &GWkq>  
data[k] = temp[j--]; 'b"TH^\  
b = temp[j]; #Tp]^ n  
} 1MA@JA:T  
} xU9@$am  
} H]#Rg`~n  
R UTnc  
/** qI3NkVA'C  
* @param data G6`J1Uk  
* @param l V7t!?xOL  
* @param i gd6Dm4q(  
*/ l!IKUzt)7  
private void insertSort(int[] data, int start, int len) { 99iUOw c  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); hh.Q\qhubB  
} #-cTc&$O;  
} *9gD*AnM,  
} gY9\o#)<  
} +'03>!V  
K6pR8z*?  
堆排序: D>wZ0p b-  
R21~Q:b !  
package org.rut.util.algorithm.support; `Xo 4q3  
Bo\D.a(T  
import org.rut.util.algorithm.SortUtil; ~S(^T9R  
mgkyC5)d  
/** pvXcLR)L+3  
* @author treeroot ^i_Iqph=  
* @since 2006-2-2 {8NwFN.  
* @version 1.0 eXy"^x p^  
*/ XrN- 2HTV  
public class HeapSort implements SortUtil.Sort{ B/eaqJ  
_|,{ ^m|d  
/* (non-Javadoc) =K$,E4*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4Nmea-!*  
*/ ( v#pj8aE  
public void sort(int[] data) { 9XV^z*E(J  
MaxHeap h=new MaxHeap(); IjZ@U%g@;  
h.init(data); !Ua&0s%  
for(int i=0;i h.remove(); 0\a8}b||  
System.arraycopy(h.queue,1,data,0,data.length); [N|xzMe  
} {0's~U+@  
g*-2* \  
private static class MaxHeap{ E8-53"m  
YL5>V$i  
void init(int[] data){ y @apJ;_R-  
this.queue=new int[data.length+1]; v:d9o.h  
for(int i=0;i queue[++size]=data; Q~ 0Dfo w?  
fixUp(size); 68 x}w Ae  
} MTmO>V&O  
} L0&S0HG   
^,7=X8Su  
private int size=0; k90B!kg  
y(8d?]4:_  
private int[] queue; &:!ij  
?q%b*Ek  
public int get() { C+l?k2  
return queue[1]; D@vMAW  
} #@_ 1fE  
^Rmoz1d  
public void remove() { SFO&=P:U  
SortUtil.swap(queue,1,size--); D<nxr~pQ  
fixDown(1); !A[S6-18%-  
} c#\-%h  
file://fixdown T"W9YpZ  
private void fixDown(int k) { %ejeyc  
int j; 3Xdn62[&  
while ((j = k << 1) <= size) { R [9w  
if (j < size %26amp;%26amp; queue[j] j++; exphe+b  
if (queue[k]>queue[j]) file://不用交换 K}2Npo FS  
break; H`D f  
SortUtil.swap(queue,j,k); ?~)Ak`=  
k = j; 0>Fqx{!heq  
} Vj!WaN_  
} 0$2={s4ze  
private void fixUp(int k) { K/Jk[29"\  
while (k > 1) { KO-a; [/  
int j = k >> 1; MFTC6L+T  
if (queue[j]>queue[k]) qeMv Vf  
break; od,tfLw4  
SortUtil.swap(queue,j,k); 3'@&c?F ye  
k = j; $Q4=37H+  
} nW&$~d  
} rv?!y8\  
2nx9#B*/T  
} vPsq<l}  
X,Zd=  
} 0P9Wy!f7  
(C~dkR?  
SortUtil: yqBa_XPV8  
l"L+e!B~  
package org.rut.util.algorithm; KnFQ)sX^  
73pC  
import org.rut.util.algorithm.support.BubbleSort; yfq>,  
import org.rut.util.algorithm.support.HeapSort; yjeL9:jH[  
import org.rut.util.algorithm.support.ImprovedMergeSort; q u:To7  
import org.rut.util.algorithm.support.ImprovedQuickSort; %Qd3BZ  
import org.rut.util.algorithm.support.InsertSort; ZeTL$E[E}  
import org.rut.util.algorithm.support.MergeSort; FF@`+T  
import org.rut.util.algorithm.support.QuickSort; (j=DD6fC  
import org.rut.util.algorithm.support.SelectionSort; hfh.eL  
import org.rut.util.algorithm.support.ShellSort; x3;jWg~'  
s7|3zqi  
/** R2Yl)2 D  
* @author treeroot ni0LQuBp  
* @since 2006-2-2 "GLYyC  
* @version 1.0 2H>aC wfX  
*/ {jhcZ"#>\  
public class SortUtil { &oc_ a1 R  
public final static int INSERT = 1; 5U;nhDmM  
public final static int BUBBLE = 2; (uT^Nn9L=  
public final static int SELECTION = 3; 4ac1m,Jlt  
public final static int SHELL = 4; FpC~1Nau  
public final static int QUICK = 5; k -]xSKG  
public final static int IMPROVED_QUICK = 6; {9'hOi50  
public final static int MERGE = 7; :f]!O@.~  
public final static int IMPROVED_MERGE = 8; i^/Di Wdyf  
public final static int HEAP = 9; UU"d_~pp  
:o<N!*pT  
public static void sort(int[] data) { dh?S[|='  
sort(data, IMPROVED_QUICK); h=Oh9zsz8  
} Fu mn9  
private static String[] name={ &]*|6cR$E  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #Wq#beBb  
}; 2| $k`I,  
QglYU  
private static Sort[] impl=new Sort[]{ F*X%N_n  
new InsertSort(), F\Y,JUn[G  
new BubbleSort(), 5{HtJ?sKc5  
new SelectionSort(), Z3Gm  
new ShellSort(), ,?fN#gc :  
new QuickSort(), j]#wrm  
new ImprovedQuickSort(), T[m ~6  
new MergeSort(), "u,sRbL  
new ImprovedMergeSort(), `M,Nd'5&|  
new HeapSort() Gk{W:866  
}; G u6[{u  
ujow?$&  
public static String toString(int algorithm){ v<%]XHN  
return name[algorithm-1]; z?I+u* rF6  
} Plb}dID"  
CN-4-  
public static void sort(int[] data, int algorithm) { vs+ We*8H  
impl[algorithm-1].sort(data); 4VC/-.At  
} `~0P[>|+  
Th_Q owk  
public static interface Sort { 4Fh&V{`W  
public void sort(int[] data); vP-3j  
} 3.B4(9:>,  
qjJ{+Rz2  
public static void swap(int[] data, int i, int j) { a4Ls^  
int temp = data; (21']x  
data = data[j]; ip<15;Z  
data[j] = temp; E`Q;DlXv>  
} H\ {E%7^h-  
} -*rHB&e  
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