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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。 L/:l>Ko>7  
插入排序: h s',f  
5wVJ.B~s  
package org.rut.util.algorithm.support; sF!#*Y  
pL{oVk#,  
import org.rut.util.algorithm.SortUtil; Vhv'Z\  
/** Qz|T0\=V  
* @author treeroot ]4H)GWHKg  
* @since 2006-2-2 _|M8xI  
* @version 1.0 \o[][R#D  
*/ c_vGr55  
public class InsertSort implements SortUtil.Sort{ ,A`|jF  
EF :g0$  
/* (non-Javadoc) `(HD'fud3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } KyoMs  
*/ e& `"}^X;I  
public void sort(int[] data) { _:9}RT?  
int temp; es6YxMg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e}?Q&Lci  
} 4O-LLH  
} [Kc?<3W  
} l0,VN,$Yl  
Am*IC?@tq  
} B%\&Q @X  
_\\Al v.  
冒泡排序: ]\^O(BzB  
{BJ>x:2  
package org.rut.util.algorithm.support; ]Y I9  
eX#.Zt]  
import org.rut.util.algorithm.SortUtil; &qg6^&  
yx|iZhK0:}  
/** y-E'Y=j  
* @author treeroot .@)vJtH)  
* @since 2006-2-2 L/rf5||@  
* @version 1.0 P{A})t7  
*/ :L@ ;.s  
public class BubbleSort implements SortUtil.Sort{ ~o_JZ:  
O;RBK&P  
/* (non-Javadoc) j#p;XI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r&8aB85  
*/ nBk&+SN  
public void sort(int[] data) { EF<TU.)Zf  
int temp; Xsa8YP9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ PyfWIU7O  
if(data[j] SortUtil.swap(data,j,j-1); =OF hM7  
} Q$5 t~*$`  
} 4\-11!'08  
} f\oW<2k]~  
} mce qZv  
nRBS&&V  
} 6,YoP|@0  
3 zh:~w_  
选择排序: :8@)W<>%  
2p, U ^h  
package org.rut.util.algorithm.support;  p[P# !  
f>6{tI 5X  
import org.rut.util.algorithm.SortUtil; SWzqCF  
n}a`|Nbk  
/** ~!Sd|e:4  
* @author treeroot 2*75*EQCH  
* @since 2006-2-2 *>W<n1r@]  
* @version 1.0 7T[$BrO\  
*/ nPvys~D  
public class SelectionSort implements SortUtil.Sort { mBwz.KEm<  
8D)1ZUx7`  
/* %/I:r7UR{  
* (non-Javadoc) By@65KmR"  
* 3=n6N TL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V$hL\`e  
*/ iHNQxLkk{:  
public void sort(int[] data) { cVx SO`jZw  
int temp; fCUx93,>z  
for (int i = 0; i < data.length; i++) { T9$~tv,5F  
int lowIndex = i; @H`jDaB 9  
for (int j = data.length - 1; j > i; j--) { ZX&e,X~V  
if (data[j] < data[lowIndex]) { pZS]i "  
lowIndex = j; ^|Z'}p|&  
} yQ/O[(  
} dUa>XkPa\2  
SortUtil.swap(data,i,lowIndex); /g>-s&w  
} y%vAEQ2j=  
} `0ym3}(O  
!T<,fR+8X  
} X(/fE?%;  
VX8rM!3  
Shell排序: 1_{e*=/y  
}i^M<A O  
package org.rut.util.algorithm.support; *~P| ? D'  
~OX\R"aZBW  
import org.rut.util.algorithm.SortUtil; !k% PP  
o}r_+\n  
/** !IR cv a  
* @author treeroot _}[WX[Le{  
* @since 2006-2-2 AsE77AUA  
* @version 1.0 r1 :TM|5L  
*/ wA$?e}  
public class ShellSort implements SortUtil.Sort{ 7HW:;2dL  
yL asoh  
/* (non-Javadoc) :"# "{P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -Wa<}Tz  
*/ y2+f)Xp_.C  
public void sort(int[] data) { OD7A(28  
for(int i=data.length/2;i>2;i/=2){ 0B8Wf/j?M  
for(int j=0;j insertSort(data,j,i); BTwc(oL  
} ngZq]8 =o  
} KgM|:'  
insertSort(data,0,1); <k8WnA ~Fl  
} T+T)~!{%  
F1BvDplQ>G  
/** ]*zG*.C  
* @param data F_:W u,dUZ  
* @param j ?<.a>"!  
* @param i $s=` {vv  
*/ h{7>>  
private void insertSort(int[] data, int start, int inc) { `\(co;:  
int temp; 4~1b  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); KKk~vwW  
} }JtcAuQt  
} Z{vc6oj  
} u:J( 0re  
T"htWo{v>  
} JZ`u?ZaJ/s  
i Ehc<  
快速排序: [ p,]/ ^ N  
|e!Y C iU  
package org.rut.util.algorithm.support; 8Kl&_-l{b  
O9N!SQs80  
import org.rut.util.algorithm.SortUtil; @BLB.=  
g~-IT&O  
/** >k\p%{P  
* @author treeroot }ACg#;>/+  
* @since 2006-2-2 H HX q_-V  
* @version 1.0 $hCS-9%&  
*/ #Ev}Gf+5Q  
public class QuickSort implements SortUtil.Sort{ \3ydNgl  
aJv+BX_,  
/* (non-Javadoc) 0.+Eo.AX4M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i?d545. u  
*/ <v9IK$J  
public void sort(int[] data) { wM[Z 0*K  
quickSort(data,0,data.length-1); 7R[7M%H  
} JtSwbdN  
private void quickSort(int[] data,int i,int j){ = LIb0TZ2  
int pivotIndex=(i+j)/2; IR3SP[K"  
file://swap 4_>;|2  
SortUtil.swap(data,pivotIndex,j); %cDGs^lgA  
Ndl{f=sjX-  
int k=partition(data,i-1,j,data[j]); !L;_f'\)6  
SortUtil.swap(data,k,j); vG6*[c8  
if((k-i)>1) quickSort(data,i,k-1); lFf>z}eLy  
if((j-k)>1) quickSort(data,k+1,j); A-B>VX  
Ln6emXqw  
} " ]k}V2l  
/** ';\norx;  
* @param data shdzkET8N  
* @param i %h0BA.r  
* @param j QsKnaRT  
* @return {~]5QKg.  
*/ l #C<bDw  
private int partition(int[] data, int l, int r,int pivot) { 1F>8#+B/W  
do{ jQ7;-9/~N  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); E4\HI+  
SortUtil.swap(data,l,r); :Nf(:D8  
} unFm~rcf  
while(l SortUtil.swap(data,l,r); U.Vn|s(`z  
return l; xX<T5Ls  
} |1H9,:*%  
n|WSnm,W  
} o3Yb2Nw  
eu)""l  
改进后的快速排序: ;Q&9 t  
kLF3s#k  
package org.rut.util.algorithm.support; -4Dz9 8du  
s\~j,$Mm2  
import org.rut.util.algorithm.SortUtil; .KG9YGL#  
D&K9!z"]  
/** nF]E":  
* @author treeroot %OHWGac"i  
* @since 2006-2-2 c1i[1x%  
* @version 1.0 GMZ6 dK  
*/ "x]7 et,  
public class ImprovedQuickSort implements SortUtil.Sort { I m-M2n  
<]z4;~/&  
private static int MAX_STACK_SIZE=4096; IC"ktv bHz  
private static int THRESHOLD=10; 2h<_?GM\s  
/* (non-Javadoc) Iw?f1 ]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4W2.K0Ca  
*/ <#"_Qgdix  
public void sort(int[] data) { (gE<`b  
int[] stack=new int[MAX_STACK_SIZE]; 6b2h\+AP  
!S7?:MJ?p\  
int top=-1; Z$c&Y>@)  
int pivot; /g%RIzgW  
int pivotIndex,l,r; _7u&.l<;  
E}%Pwr  
stack[++top]=0; `=V1w4J  
stack[++top]=data.length-1; R)N^j'R~=  
+-TEB  
while(top>0){ 3NZK$d=4  
int j=stack[top--]; %*<Wf4P"  
int i=stack[top--]; CU c,  
RWu< dY#ym  
pivotIndex=(i+j)/2; $L|+Z>x  
pivot=data[pivotIndex]; w AdaP9h  
N`,,sw  
SortUtil.swap(data,pivotIndex,j); w(S&X"~  
`'r~3kP*NT  
file://partition 1x/R  
l=i-1; p]~PyzG!  
r=j; Hsov0  
do{ (6H 7?nv  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =],c$)  
SortUtil.swap(data,l,r); Z s| *+[  
} ]C+P J:CC  
while(l SortUtil.swap(data,l,r); kuLur)^  
SortUtil.swap(data,l,j);   h)W#  
o[JZ>nm  
if((l-i)>THRESHOLD){ O 1X)  
stack[++top]=i; *j<#5=l  
stack[++top]=l-1; wj'fdrY5h  
} X-bM`7'H  
if((j-l)>THRESHOLD){ bs% RWwn  
stack[++top]=l+1; FB,rQ9D  
stack[++top]=j; s/>0gu]A8  
} ./DlHS;  
>D##94PZ  
} v^t oe  
file://new InsertSort().sort(data); RxV " ,  
insertSort(data); w .M  
} i*4v!(E  
/** hWn-[w/l_  
* @param data \%]lsml  
*/ cw0 @Z0  
private void insertSort(int[] data) { tqB6:p-%  
int temp; p}I\H ^"8+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D'D IC  
} *>EV4Hl  
}  L`Ys`7  
}  Hi\z-P-  
c":2<:D&  
} .W;cz8te  
 RZqMpW  
归并排序: Xa"I  
C[ KMaB  
package org.rut.util.algorithm.support; &0ymAf5R  
~EQ# %db  
import org.rut.util.algorithm.SortUtil; y'oH>l+n  
\ ux {J  
/** |Q%nnN  
* @author treeroot f/.f08  
* @since 2006-2-2 !)J$f _88D  
* @version 1.0 )"tM[~e`  
*/ !xg10N}I  
public class MergeSort implements SortUtil.Sort{ +uNMyVH  
z~2;u 5S&  
/* (non-Javadoc) S;#7B?j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g^=Ruh+  
*/ 5YI6$ZdQ  
public void sort(int[] data) { BP&] t1p  
int[] temp=new int[data.length]; "9vL+Hh  
mergeSort(data,temp,0,data.length-1); I&^hG\D  
} Kj?hcG l[  
ZRr.kN+F  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8{&.[S C7  
int mid=(l+r)/2; / U~yYh  
if(l==r) return ; &u<%%b|  
mergeSort(data,temp,l,mid); Nd;pkssd  
mergeSort(data,temp,mid+1,r); HB<>x  
for(int i=l;i<=r;i++){ ]R09-s 0$7  
temp=data; HYJEz2RF  
} I&&;a.  
int i1=l; $RC)e 7  
int i2=mid+1; OSJj^Y)W|  
for(int cur=l;cur<=r;cur++){ 1p-<F3;  
if(i1==mid+1) 9A`^ (  
data[cur]=temp[i2++]; 79jnYjk  
else if(i2>r) c[vFh0s"m  
data[cur]=temp[i1++]; 3Zpq#  
else if(temp[i1] data[cur]=temp[i1++]; Smh=Q4,W  
else !"F8jA}  
data[cur]=temp[i2++]; %_39Wa  
} ^7:UC\_  
} eG dFupfz  
/p}pdXS  
} X7?14W  
fNrpYR X  
改进后的归并排序: x.I?)x!C'  
G}dq ft5"  
package org.rut.util.algorithm.support; 3r?T|>|  
4~vn%O6n  
import org.rut.util.algorithm.SortUtil; Ty;^3  
6jov8GIAt  
/** SK@lr  
* @author treeroot |uM=pm;H  
* @since 2006-2-2 <c,iu{:  
* @version 1.0 zvv/|z2(r  
*/ xHkxrXqeI  
public class ImprovedMergeSort implements SortUtil.Sort { VAdUd {  
NR^3 1&}It  
private static final int THRESHOLD = 10; I3ugBLxVC3  
A#F6~QX(.9  
/* ZV-Yq !|t  
* (non-Javadoc) qzu(4*Gk6  
* #zb67mg~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z|3[Y@c \  
*/ LZJFp@  
public void sort(int[] data) { lvR>%I0`*  
int[] temp=new int[data.length]; 5VGZ5,+<<  
mergeSort(data,temp,0,data.length-1);  Ozsvsa  
} Xw162/:h  
g(o^'f  
private void mergeSort(int[] data, int[] temp, int l, int r) { 6x16?x  
int i, j, k; J[\8:qE  
int mid = (l + r) / 2; :4Y 5  
if (l == r) B2)5Z]  
return;  Q 6r  
if ((mid - l) >= THRESHOLD) ]];LA!n  
mergeSort(data, temp, l, mid); 7Ewq'Vu`y  
else Jg6@)<n  
insertSort(data, l, mid - l + 1); ;"NW= P&  
if ((r - mid) > THRESHOLD) J(,{ -d-E  
mergeSort(data, temp, mid + 1, r); a0`(* #P  
else "~08<+  
insertSort(data, mid + 1, r - mid); c$;Cpt@-j  
byk9"QeY\  
for (i = l; i <= mid; i++) { {@t6[g++  
temp = data; W;F=7[h  
} J2!)%mF$  
for (j = 1; j <= r - mid; j++) { c <X( S  
temp[r - j + 1] = data[j + mid]; [3v&j_  
} OXV9D:bIa  
int a = temp[l]; G~f|Sx  
int b = temp[r]; 22EI`}"J  
for (i = l, j = r, k = l; k <= r; k++) { b C"rQJg  
if (a < b) { k !g%vx  
data[k] = temp[i++]; ca'c5*Fs  
a = temp; Et;Ubj"+  
} else { j__l'?s  
data[k] = temp[j--]; lQVK~8t3  
b = temp[j]; Mw6 Mt  
} $$T a  
} tG 0 &0`  
} S6{y%K2y&  
)kE1g&  
/** Bdib)t[  
* @param data R`%O=S*]  
* @param l yDi'@Z9R?  
* @param i k.%FGn'fR  
*/ ~01t_Xp qc  
private void insertSort(int[] data, int start, int len) {  [4mIww%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Ro#O{  
} LUA<N:  
} A/~^4DR  
} 7fW$jiw  
} 9lqD~H.  
]q|U0(q9  
堆排序: 4`:Eiik&p  
#D%l;Ae  
package org.rut.util.algorithm.support; is{H >#+"  
YF)c.Q0  
import org.rut.util.algorithm.SortUtil; oox;8d4}y  
ezhK[/E=  
/** }t1J`+x%  
* @author treeroot Qt=OiKZ  
* @since 2006-2-2 W'Y#(N[ktP  
* @version 1.0 4z^VwKH\j  
*/ &C6*"JZ4  
public class HeapSort implements SortUtil.Sort{ S|_"~Nd=  
KtaoU2s  
/* (non-Javadoc) 1sXVuto  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > NtJ)N*  
*/ G=m18Bv{  
public void sort(int[] data) { mzn#4;m$  
MaxHeap h=new MaxHeap(); W;.L N<bx  
h.init(data); q]gF[&QZ  
for(int i=0;i h.remove();  *,e `.  
System.arraycopy(h.queue,1,data,0,data.length); eY(JU5{  
} v@qVT'qlU  
K^c%$n:}+  
private static class MaxHeap{ f|{&Y2h(R  
#!w7E,UBi  
void init(int[] data){ v.>95|8  
this.queue=new int[data.length+1]; [9~6, ;6  
for(int i=0;i queue[++size]=data; nOU.=N v`  
fixUp(size); *YP;HL  
} H) q_9<;  
} ;sY n=r  
4R9y~~+  
private int size=0; +<sv/gEt  
Vd A!tL  
private int[] queue; CD)JCv  
{br6*  
public int get() { y2>AbrJ  
return queue[1]; \!4_m8?  
} gLWbd~  
pUeok+k_  
public void remove() { gO_d!x*  
SortUtil.swap(queue,1,size--); rC6{-42bb  
fixDown(1); 1-8 G2e  
} *NoixV1>  
file://fixdown w*gG1BV  
private void fixDown(int k) { XK/bE35%^!  
int j; b4>1UZGW-  
while ((j = k << 1) <= size) { Url8&.pw  
if (j < size %26amp;%26amp; queue[j] j++; lT;uL~j  
if (queue[k]>queue[j]) file://不用交换 Di &XDW/  
break; j2=|,AmC  
SortUtil.swap(queue,j,k); n?8xRaEf  
k = j; 1oL3y;>iL  
} h&:XO9dY  
} ?GeMD /]  
private void fixUp(int k) { {w<"jw&2  
while (k > 1) { F;Bq[V)R  
int j = k >> 1; 0!q@b  
if (queue[j]>queue[k]) yjIA`5^  
break; kB_T9$0e#  
SortUtil.swap(queue,j,k); =$\9t$A  
k = j; SF[}s uL  
} :[ll$5E.  
} J{PNB{v  
G@o\D-$  
} $)VnHr `hy  
uS5ADh  
} N$<R6DU]K  
J(Zz^$8]<?  
SortUtil: }KR"0G[f  
Z^#u n  
package org.rut.util.algorithm; uMK8V_p*?  
75H;6(7  
import org.rut.util.algorithm.support.BubbleSort; 1 abQoe  
import org.rut.util.algorithm.support.HeapSort; B$_-1^L e  
import org.rut.util.algorithm.support.ImprovedMergeSort; !qug^F  
import org.rut.util.algorithm.support.ImprovedQuickSort; #?7g_  
import org.rut.util.algorithm.support.InsertSort; ?~tx@k$;Es  
import org.rut.util.algorithm.support.MergeSort; f<3lxu  
import org.rut.util.algorithm.support.QuickSort; af}JS2=$  
import org.rut.util.algorithm.support.SelectionSort; #:tC^7qk  
import org.rut.util.algorithm.support.ShellSort; y`8jz,&.  
m tVoA8(6  
/** h<bCm`qj  
* @author treeroot j-7aJj%  
* @since 2006-2-2 8_T9[ ]7V8  
* @version 1.0 \n^;r|J7k  
*/ m Q^SpK #  
public class SortUtil { xtzkgb,0[  
public final static int INSERT = 1; Ui`#B  
public final static int BUBBLE = 2; >lF@M-  
public final static int SELECTION = 3; ricL.[v9S  
public final static int SHELL = 4; ) RNB;K~s9  
public final static int QUICK = 5; ma@!"Z8 S  
public final static int IMPROVED_QUICK = 6; JHg y&/  
public final static int MERGE = 7; %g~zE a-g  
public final static int IMPROVED_MERGE = 8; lec3rv0)  
public final static int HEAP = 9; |*N;R+b  
N@V:nCl  
public static void sort(int[] data) { LU+}iA)  
sort(data, IMPROVED_QUICK); Q 6dqFnz  
} a( SJ5t?-2  
private static String[] name={ oH(=T/{  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" o~26<Lk  
}; ^n*:zmD  
c uHF^l  
private static Sort[] impl=new Sort[]{ ^#4Ah[:XA  
new InsertSort(), cueaOtD  
new BubbleSort(), 4X5KrecNr  
new SelectionSort(), nRs:^Q~o  
new ShellSort(), M[ ON2P;  
new QuickSort(), ^SW0+O  
new ImprovedQuickSort(), B{>x  
new MergeSort(), | cL,$G  
new ImprovedMergeSort(), zEYQZywc  
new HeapSort() k\\e`=  
}; `Nv P)|  
#{@qC2!2/  
public static String toString(int algorithm){ _,3%)sn-)  
return name[algorithm-1]; n2Ew0-  
} :}-izd)/j  
 C~T*Wlk  
public static void sort(int[] data, int algorithm) { C0CJ;   
impl[algorithm-1].sort(data); &!B4v<#,U  
} 5. +_'bF|  
+-qa7  
public static interface Sort { nxe9^h7m  
public void sort(int[] data); 9s?gI4XN  
} Op:$7hv  
Bv#?.0Ez;  
public static void swap(int[] data, int i, int j) {  huvn_  
int temp = data; rTim1<IXR  
data = data[j]; H{1'- wB  
data[j] = temp; _}tPtHPa/  
} B(Er/\-@U  
} HJt '@t=Ak  
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