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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。 ?ZF ~U  
插入排序: `eo$o!  
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package org.rut.util.algorithm.support; ,_wpYTl*X  
H^TU?vz} <  
import org.rut.util.algorithm.SortUtil; %2q0lFdcM  
/** 5u5-:#sLy  
* @author treeroot =\ek;d0Tqb  
* @since 2006-2-2 ScCp88KpFI  
* @version 1.0 6y0CEly>3#  
*/ 4LY$;J;2  
public class InsertSort implements SortUtil.Sort{ ;xXD2{q  
ffH]`N  
/* (non-Javadoc) J]AkWEiCJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J=l\t7w  
*/ :abpht  
public void sort(int[] data) { >Tf <8r,  
int temp; Hoj'zY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +hZ{/  
} ByU&fx2Z  
} Kb$6a'u7  
} L>3-z>u,  
#qnK nxD  
} /l%+l@  
w/49O;rV  
冒泡排序: /z)H7s+  
##QKXSD  
package org.rut.util.algorithm.support; .EfGL _  
<V b SEi  
import org.rut.util.algorithm.SortUtil; oR@emYL  
dEu\}y|  
/** &_1x-@oI2:  
* @author treeroot R9q9cB i3  
* @since 2006-2-2 '=V1'I*  
* @version 1.0 S%6V(L|  
*/ t&>eZ"  
public class BubbleSort implements SortUtil.Sort{ F'^y?UP[  
?PSJQ3BC|  
/* (non-Javadoc) Tfytc$aQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :OKU@l|  
*/ 'Szk!,_  
public void sort(int[] data) { @{ CP18~:  
int temp; F2^qf  
for(int i=0;i for(int j=data.length-1;j>i;j--){ AMSn^ 75  
if(data[j] SortUtil.swap(data,j,j-1); Io*mFa?  
} b/]@G05>>  
} } Q1m  
} O<\h_   
} M>rertUR  
).i :C(|  
} xXQW|#X\  
95IR.Qfn!  
选择排序: C"cBlru8B  
)VM'^sV?  
package org.rut.util.algorithm.support; :c3'U_H^  
5T-CAkR{n  
import org.rut.util.algorithm.SortUtil; I AFj_VWC0  
C'&t@@:  
/** ^@-qnU lH  
* @author treeroot /I@`B2  
* @since 2006-2-2 UNhM:!A  
* @version 1.0 E/Adi^  
*/ m^%Xl@V:c-  
public class SelectionSort implements SortUtil.Sort { !4"<:tSO  
j\%m6\{n|  
/* dz"HO!9  
* (non-Javadoc) Aw,#oG {N  
* 7 : .bqRu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eCy]ugsi%  
*/ 5cZKk/"Ad}  
public void sort(int[] data) { <=gf|(  
int temp; |n~Vpy  
for (int i = 0; i < data.length; i++) { 3IYbgUG  
int lowIndex = i; r.10b]b  
for (int j = data.length - 1; j > i; j--) { [W--%=Ou  
if (data[j] < data[lowIndex]) { w@$_2t  
lowIndex = j; `XK+Y  
} &?0hj@kd~  
} wrEYbb  
SortUtil.swap(data,i,lowIndex); EWp'zbWP  
} Zoyo:vv&  
} z\6/?5D#v  
k}908%w  
} 0$I!\y\  
1g1gu=|Q  
Shell排序: e*/ya8p?  
BDc "0XH  
package org.rut.util.algorithm.support; c 6$n:  
A,f%0 eQR  
import org.rut.util.algorithm.SortUtil; n||!/u)*  
<^YZ#3~1T  
/** 3@^b's'S|}  
* @author treeroot ,}HnS)+  
* @since 2006-2-2 L~} 2&w  
* @version 1.0 :}[[G2|9  
*/  j.vBld  
public class ShellSort implements SortUtil.Sort{ w*qmC<D$A  
I.L8A|nZ  
/* (non-Javadoc) }ej-Lu,b3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *+>R^\uT  
*/ 5c+7c@.  
public void sort(int[] data) { v}^ f8nVR  
for(int i=data.length/2;i>2;i/=2){ * ~4m!U_s  
for(int j=0;j insertSort(data,j,i); -"X} )N2  
}  0ZpWfL  
} M$AQZ')9  
insertSort(data,0,1); ko<VB#pOMr  
} pTzfc`~xv  
n$YCIW )0  
/** 'P,F)*kh  
* @param data G[[NDK  
* @param j K)n0?Q_>  
* @param i & wG3RR|  
*/ -Drm4sTpDb  
private void insertSort(int[] data, int start, int inc) { _<P~'IN+n  
int temp; :>GT<PPD;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xrky5[XoD  
} ^><B5A>;  
} 4j h4XdH  
} &m>txzo  
lITZ|u  
} ?$\y0lHw/7  
(!&g (l;  
快速排序: uH?lj&  
wJF Fg :  
package org.rut.util.algorithm.support; > [|SF%  
s7#|'jhZt  
import org.rut.util.algorithm.SortUtil; D $[/|%3  
,wlSNb@'  
/** TAn.5 wH9t  
* @author treeroot w=H4#a?fc  
* @since 2006-2-2 ?G>#'T[  
* @version 1.0 ^Wz3 q-^  
*/ [j`-R 0Np  
public class QuickSort implements SortUtil.Sort{ _ Oe|ZQ  
;q&\>u:  
/* (non-Javadoc) ds9`AiCW>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 59I}  
*/ *>XY' -;2e  
public void sort(int[] data) { #O .-/&Z  
quickSort(data,0,data.length-1); G ]mX+?  
} .cX,"2;n  
private void quickSort(int[] data,int i,int j){ P!)k4n  
int pivotIndex=(i+j)/2; hrr;=q$  
file://swap oNV(C'A  
SortUtil.swap(data,pivotIndex,j); @5# RGM)5^  
=7Y gES  
int k=partition(data,i-1,j,data[j]); SY}iU@xo  
SortUtil.swap(data,k,j); n!(g<"  
if((k-i)>1) quickSort(data,i,k-1); Q,A`"e#:  
if((j-k)>1) quickSort(data,k+1,j); |fk,&5s  
@9rmm)TZ  
} B<Ynx_ 95  
/** V-(LHv  
* @param data XU#nqvS`.  
* @param i ^(0tNX/XD  
* @param j OWK)4[HY(  
* @return \T_?<t,UT  
*/ /fM6%V=Y  
private int partition(int[] data, int l, int r,int pivot) { jdYv*/^  
do{ f-tV8  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q61 rNOw_  
SortUtil.swap(data,l,r); =w.#j-jR  
} #dGg !D  
while(l SortUtil.swap(data,l,r); PHa#;6!5  
return l; r}~l(  
} ^JMSe-  
&xqe8!FeA  
} : |c,.uO  
@zJ#16V i  
改进后的快速排序: EN%Xs578  
CFh&z^]PR  
package org.rut.util.algorithm.support; u0J+Nj9  
V6d*O`  
import org.rut.util.algorithm.SortUtil; IfZaK([  
+Hb6j02#  
/** m(3bO[u1  
* @author treeroot  1Nk}W!v  
* @since 2006-2-2 vN7ihe[C  
* @version 1.0 9CWUhS   
*/ y tmlG%  
public class ImprovedQuickSort implements SortUtil.Sort { 1*r {%6  
w I@ lO\  
private static int MAX_STACK_SIZE=4096; V_(?mC  
private static int THRESHOLD=10; Iq\sf-1E  
/* (non-Javadoc) 6iFd[<.*j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #V8='qD  
*/ ^tuJM:  
public void sort(int[] data) { ANCgch\  
int[] stack=new int[MAX_STACK_SIZE]; %;zWS/JhL  
7q|(ZZa  
int top=-1; DZXv3gnX  
int pivot; Z<r&- !z  
int pivotIndex,l,r; |"P5%k#6^>  
&fj&UBA  
stack[++top]=0; C({L4O#?o  
stack[++top]=data.length-1; kkrQ;i)Z  
zF]hf P0Q  
while(top>0){ @/JGC%!  
int j=stack[top--]; PSHs<Z47  
int i=stack[top--]; A}\Rms 2  
^%d+nKx9nL  
pivotIndex=(i+j)/2; 3a{QkVeV7  
pivot=data[pivotIndex]; 5Kv=;o=U  
'EREut,>'  
SortUtil.swap(data,pivotIndex,j); h3 p 3~xq  
kQIWDN  
file://partition Ok6Y&#'P  
l=i-1; M14_w,  
r=j; nL+*Ja  
do{ }M|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (7ew&u\Li  
SortUtil.swap(data,l,r); cp?`\P  
} f8?K_K;\   
while(l SortUtil.swap(data,l,r); YQN=.Wtc  
SortUtil.swap(data,l,j); \lR~!6:  
=WEfo;  
if((l-i)>THRESHOLD){ -"a+<(Y  
stack[++top]=i; xel&8 `  
stack[++top]=l-1; ~.x!st}  
} ]V@! kg(p8  
if((j-l)>THRESHOLD){ NE9e br K  
stack[++top]=l+1; I/WnF"yP  
stack[++top]=j; Ir\3c9  
} .<42-IEc  
~*B1}#;  
} wKY6[vvF  
file://new InsertSort().sort(data); |x<  
insertSort(data); wOi>i`D&  
} X Y4s  
/** $;;?'!%.  
* @param data *qb`wg  
*/ !Q7   
private void insertSort(int[] data) { jSYj+k  
int temp; @/0aj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;#~ !`>n?  
} (tq)64XVz  
} 9D#PO">|  
} yl'~H;su  
RycEM|51V  
} WejY b;KS  
W&!Yprr  
归并排序: >uuX<\cW  
N'`*#UI+  
package org.rut.util.algorithm.support; 6:EO  
7GP?;P  
import org.rut.util.algorithm.SortUtil; Ew:JpMR  
XbH X,W$h  
/** _ u:#2K$  
* @author treeroot IWT##']G  
* @since 2006-2-2 e;6Sj  
* @version 1.0 ;JmD(T7{  
*/ huTJ a2  
public class MergeSort implements SortUtil.Sort{ <aHK{ *'3  
2hu6  
/* (non-Javadoc) y~luuV;uj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @W @L%<  
*/ 5;^8wh(  
public void sort(int[] data) { 84 knoC  
int[] temp=new int[data.length]; k2@IJ~  
mergeSort(data,temp,0,data.length-1); DSjo%Brd-  
} |;_ yAL  
kv5Qxj}  
private void mergeSort(int[] data,int[] temp,int l,int r){ S$H4xkKs  
int mid=(l+r)/2; &1[5b8H;+  
if(l==r) return ; cn\_;TYiJ  
mergeSort(data,temp,l,mid); %eah=e  
mergeSort(data,temp,mid+1,r); e+6~JbMV  
for(int i=l;i<=r;i++){ 8D n]`}ok  
temp=data; r=w%"3vb^  
} 7]v-2 *  
int i1=l; gvU6p[D  
int i2=mid+1; +.R-a+y3  
for(int cur=l;cur<=r;cur++){ 8p211MQ<  
if(i1==mid+1) 3Q]MT  
data[cur]=temp[i2++]; q@!:<Ra,){  
else if(i2>r) b]Y,& 8}[+  
data[cur]=temp[i1++]; & aLR'*]6  
else if(temp[i1] data[cur]=temp[i1++]; OKU P  
else !.J~`Y'd_  
data[cur]=temp[i2++]; cQ8:;-M   
} y1'/@A1  
} 53T2w,?  
2~@=ua[|=5  
} K7l{&2>?  
AHA*yC  
改进后的归并排序: .6"7Xxe]<  
DuE>KX{<!R  
package org.rut.util.algorithm.support; )3 r1; ^W  
d}=p-s.GA  
import org.rut.util.algorithm.SortUtil; ,\m c.80  
.U3p~M+  
/** f*5"Jh@  
* @author treeroot v8X&H  
* @since 2006-2-2 ?)X@4Jem  
* @version 1.0 W#wM PsB  
*/ "D k:r/  
public class ImprovedMergeSort implements SortUtil.Sort { Ww p^dx`!  
TB[vpTC9)  
private static final int THRESHOLD = 10; E7<:>Uh  
`Q8 D[  
/* !^7:Rr _  
* (non-Javadoc) [Vf|4xcD  
* m88~+o<G%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B%pvk.`  
*/ xn@jL;+<-  
public void sort(int[] data) { Qh[t##I/  
int[] temp=new int[data.length]; w#1dO~  
mergeSort(data,temp,0,data.length-1); t}tKm  
} 4Klfnki  
 X"0Q)  
private void mergeSort(int[] data, int[] temp, int l, int r) { f/B--jq  
int i, j, k; ~4^e a  
int mid = (l + r) / 2; g3Q #B7A  
if (l == r) Yru[{h8hw`  
return; (NQ[AypMI  
if ((mid - l) >= THRESHOLD) ;H=6u  
mergeSort(data, temp, l, mid); 2ya`2 m  
else *O5+?J Z!  
insertSort(data, l, mid - l + 1); Q.\>+4]1&&  
if ((r - mid) > THRESHOLD) QD<4(@c5|  
mergeSort(data, temp, mid + 1, r); ?*@h]4+k'  
else dF,FH-  
insertSort(data, mid + 1, r - mid); 5^dw!^d  
`R> O5Rv  
for (i = l; i <= mid; i++) { t5k&xV=~ #  
temp = data; E;4a(o]{t  
} RFC;1+Jn  
for (j = 1; j <= r - mid; j++) { ts]7 + 6V  
temp[r - j + 1] = data[j + mid]; .9xGLmg  
} Ae#6=]V+^  
int a = temp[l]; MH?B .2  
int b = temp[r]; r Lh h  
for (i = l, j = r, k = l; k <= r; k++) { =<05PB  
if (a < b) { _:L*{=N  
data[k] = temp[i++]; .T|NB8 rS  
a = temp; xD=D *W  
} else { rYJ ))@  
data[k] = temp[j--]; R}>Do=hAO  
b = temp[j]; ,gvX ~k  
} !D3}5A1,  
} D:(f"  
} >DRs(~|V#  
.%rR  
/** _D9=-^  
* @param data ge[i&,.&z  
* @param l ?5Fj]Bk]  
* @param i 0Nu]N)H5<l  
*/ ,&=`T 7i  
private void insertSort(int[] data, int start, int len) { x\rZoF.NQ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [f0HUbPX  
} }'W^Ki$  
} | #Pc e  
} qM0MSwvC=  
} 76b7-Nj"  
1Tq$E[  
堆排序: &EPEpN R  
v~\45eEA  
package org.rut.util.algorithm.support; ([Aq  
IJ8DN@w9  
import org.rut.util.algorithm.SortUtil; :RsPGj6   
cPcV[6)5K9  
/** Yg[IEy  
* @author treeroot S nHAY <  
* @since 2006-2-2 l5[xJH  
* @version 1.0 ".%LBs~$  
*/ ;ZJ,l)BNO  
public class HeapSort implements SortUtil.Sort{ x]oQl^ F  
Q*.FUV&;  
/* (non-Javadoc) / aG>we  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `5Btg. &  
*/ hD1AK+y  
public void sort(int[] data) { F9\Ot^~  
MaxHeap h=new MaxHeap(); GZEonCk[&  
h.init(data); (J&Xo.<Z-  
for(int i=0;i h.remove(); mM* yv  
System.arraycopy(h.queue,1,data,0,data.length); lrhAO"/1  
} k+[KD>;1  
+ca296^  
private static class MaxHeap{ Nr9[Vz?$P  
gKN_~{{OD  
void init(int[] data){ b3xkJ&Z  
this.queue=new int[data.length+1]; j/D)UWkR  
for(int i=0;i queue[++size]=data; \`&pk-uW  
fixUp(size); P(epG?Qg  
} _}@n_E  
} ?(q*U!=  
Vb^s 'k  
private int size=0; 4i/q^;`  
0>=)  
private int[] queue; #2jn4>  
*\KMkx  
public int get() { Hi_Al,j:  
return queue[1]; vvAk<[  
} NP`s[  
15 o.j!S  
public void remove() { _c8.muQ<  
SortUtil.swap(queue,1,size--); S7ehk*`  
fixDown(1); S}^s 5ztm  
} 0 jP00   
file://fixdown xY0QGQca  
private void fixDown(int k) { .k`*$1?73x  
int j; s2?,'es  
while ((j = k << 1) <= size) { 5 ?~-Vv31s  
if (j < size %26amp;%26amp; queue[j] j++; _MbVF>JOx  
if (queue[k]>queue[j]) file://不用交换 &8+6!TN7  
break; P9"D[uz  
SortUtil.swap(queue,j,k); #)A?PO2  
k = j; ckN(`W,xp  
} CS5jJi"pD3  
} {]\uR-a(o  
private void fixUp(int k) { 3Ge<G  
while (k > 1) { AKKU-5 B9c  
int j = k >> 1; G^rh*cb K  
if (queue[j]>queue[k]) U.Chf9a -  
break; .8qzU47E  
SortUtil.swap(queue,j,k); 5V nr"d  
k = j; (U'7Fc  
} z]l-?>Zbg  
} V87ee,  
 ,eeL5V  
} +%}5{lu_e  
B N*,!fx  
} IEoR7:  
t7oz9fSz=?  
SortUtil: rfXF 01I  
"UoCT7X  
package org.rut.util.algorithm; )fd-IYi-3  
Rhv".epz  
import org.rut.util.algorithm.support.BubbleSort; t6bWSz0  
import org.rut.util.algorithm.support.HeapSort; H"FflmUO  
import org.rut.util.algorithm.support.ImprovedMergeSort; I"cQ5gF?A  
import org.rut.util.algorithm.support.ImprovedQuickSort; x-V' 0-#U>  
import org.rut.util.algorithm.support.InsertSort; lv\F+?]a  
import org.rut.util.algorithm.support.MergeSort; +?j?|G  
import org.rut.util.algorithm.support.QuickSort; fteyG$-s  
import org.rut.util.algorithm.support.SelectionSort; i[ Gw 7'f  
import org.rut.util.algorithm.support.ShellSort; !v5sWVVR  
86[RH!e  
/** <[3lV)~t  
* @author treeroot UQ$\ an'  
* @since 2006-2-2 ;%rs{XO9  
* @version 1.0 oX 2DFgz  
*/ lYZ@a4TA  
public class SortUtil { GrLM${G  
public final static int INSERT = 1; c(Uj'uLc  
public final static int BUBBLE = 2; U)`3[fo  
public final static int SELECTION = 3; cB|Cy{%  
public final static int SHELL = 4; hDB`t $  
public final static int QUICK = 5; yToT7 X7F7  
public final static int IMPROVED_QUICK = 6; e1`)3-f  
public final static int MERGE = 7; +%e%UF@  
public final static int IMPROVED_MERGE = 8; k\Z;Cmh>  
public final static int HEAP = 9; neB.Wu~WH  
+2V%'{:  
public static void sort(int[] data) { \}u7T[R=`  
sort(data, IMPROVED_QUICK); Owh*KY:  
} igRDt{}  
private static String[] name={ 9!O+Ryy?\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" KF:]4`$  
}; lk*0c {_L  
{m+S{dWp  
private static Sort[] impl=new Sort[]{ "]SJbuzh  
new InsertSort(), %|`:5s-T%  
new BubbleSort(), $dx1[ V+_  
new SelectionSort(), 6z p@#vYI  
new ShellSort(), 6"7:44O;G  
new QuickSort(), (!_X:+0_  
new ImprovedQuickSort(), s=q%:uCO  
new MergeSort(), sxN>+v11z  
new ImprovedMergeSort(), c ?p0#3%L#  
new HeapSort() 1%SJ1oY  
}; [NCXn>Z  
 +eDN,iv  
public static String toString(int algorithm){ s]F?=yEp  
return name[algorithm-1]; iJCY /*C}  
} f*|8n$%   
ub zb  
public static void sort(int[] data, int algorithm) { {h vQ<7b  
impl[algorithm-1].sort(data); fz<|+(_>J  
} EBj,pk5M  
d739UhKC  
public static interface Sort { rSF;Lp)}  
public void sort(int[] data); %67G]?EXB  
} r{R[[]p  
w!B,kqTG  
public static void swap(int[] data, int i, int j) { 6:|!1Pg5  
int temp = data; B c,"12  
data = data[j]; fw1;i  
data[j] = temp; v|4STR  
} nxn[ ~~  
} ?8wwd!)x%  
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