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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。 8"* $e I5  
插入排序: b~1p.J4  
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package org.rut.util.algorithm.support; gS|xicq!  
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import org.rut.util.algorithm.SortUtil; )L hO}zQ  
/** =<_5gR  
* @author treeroot 1k%ko?  
* @since 2006-2-2 Yh%wf3 UEO  
* @version 1.0 Tk2kis(n  
*/ m[7:p{  
public class InsertSort implements SortUtil.Sort{ h'fD3Gr&  
&s;%(c04A  
/* (non-Javadoc) pn7 :")Zx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A>g$[  
*/ | uZ=S]V@  
public void sort(int[] data) { tr/dd&(Y1  
int temp; y?@Y\ b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q@-qA]  
} 7VXeu+-P  
} 835Upj>  
} CGe'z  
lM1!2d'P  
} R39R$\  
5)o IPHXw  
冒泡排序: B:r-')!0$#  
g^4FzJ  
package org.rut.util.algorithm.support; =U2Te  
.}<B*e=y  
import org.rut.util.algorithm.SortUtil; 9iy|=  
@ :4Kk 4g1  
/** pNJM]-D]m~  
* @author treeroot .- Lqo=o\  
* @since 2006-2-2 n1/lE)  
* @version 1.0 Wkk Nyg,  
*/ 1;gSf.naG  
public class BubbleSort implements SortUtil.Sort{ 2!otVz! Mh  
,< icW &a  
/* (non-Javadoc) uWInx6p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QPcB_wUqu  
*/ >oNk(. %  
public void sort(int[] data) { Z%{f[|h9}  
int temp; '> Q$5R1  
for(int i=0;i for(int j=data.length-1;j>i;j--){ U ^9oc&  
if(data[j] SortUtil.swap(data,j,j-1); S+y2eP G  
} =5M>\vt]  
} F`Y<(]+   
} KUyJ"q<W  
} YcV~S#b  
h^*{chm]  
} <"+C<[n.  
RM+E  
选择排序: KRZV9AJ  
U.F65KaKF  
package org.rut.util.algorithm.support; /nP=E  
6;pREM+  
import org.rut.util.algorithm.SortUtil; v+sbRuo8  
r*wKYb  
/** F]*-i 55S  
* @author treeroot RHbp:Mlk  
* @since 2006-2-2 R*0F)M  
* @version 1.0 6v#G'M#r  
*/ !v L :P2  
public class SelectionSort implements SortUtil.Sort { `@D4?8_  
!gf3%!%  
/* =x'%zUgE  
* (non-Javadoc) urB3  
* [alXD_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0cUt"(]  
*/ ~m?~eJK#a  
public void sort(int[] data) { /,UkT*+>!  
int temp; B ,Brmn  
for (int i = 0; i < data.length; i++) { ? $ c  
int lowIndex = i; o {LFXNcg[  
for (int j = data.length - 1; j > i; j--) { ,GnU]f  
if (data[j] < data[lowIndex]) { z0[ZO1Fo(  
lowIndex = j; >2 qP  
} RWo B7{G  
} !S-U8KI|  
SortUtil.swap(data,i,lowIndex); [ d7]&i}*|  
} <pUou  
} <;e#"(7  
XE*bRTEw  
} *^Y0}?]qT  
3raA^d3!?  
Shell排序: ^b %8_?2m  
J"%}t\Q  
package org.rut.util.algorithm.support; hY 2PV7"[;  
 ]:fCyIE  
import org.rut.util.algorithm.SortUtil; & }}WP:U  
lh_zZ!)g  
/** I7^X;Q F  
* @author treeroot Sg>0P*K@  
* @since 2006-2-2 !y~b;>887  
* @version 1.0 j]"xck  
*/ !@Lc/'w  
public class ShellSort implements SortUtil.Sort{ 9nS!  
%:?QE ;  
/* (non-Javadoc) xN8JrZE&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jk`)`94 I  
*/ ok2~B._+;  
public void sort(int[] data) { 2] G$6H  
for(int i=data.length/2;i>2;i/=2){ m@u`$rOh  
for(int j=0;j insertSort(data,j,i); E_1I|$  
} AuipK*&g  
} i?dKmRp(@y  
insertSort(data,0,1); S)@vl^3ec  
} >o#wP  
'a^tL[rLP1  
/** =Fy8rTdk6r  
* @param data ]G PJ(+5  
* @param j otD?J= B  
* @param i *yq]  
*/ zn1Rou]6  
private void insertSort(int[] data, int start, int inc) { ~C7<a48x  
int temp; ;OU>AnWr(&  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); UH-uU~  
} {FY[|:Cp  
} t`ceVS  
} "ak9LZQ9z  
6H,=S`V]EK  
} /JubiLEK  
:;;WK~* #  
快速排序: 6oh@$.ThG  
X/K)kIi  
package org.rut.util.algorithm.support; 'Sy *'&  
-Dxhq& }Y  
import org.rut.util.algorithm.SortUtil; I''R\B p  
A{x 7  
/** 2qMsa>~  
* @author treeroot Z WRRh^  
* @since 2006-2-2 bH&)rn  
* @version 1.0 bTQa'y`3  
*/ g+ 1=5g  
public class QuickSort implements SortUtil.Sort{ /:{_|P\  
D>b5Uwt  
/* (non-Javadoc) <-B"|u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Bd3d%  
*/ |EV\a[  
public void sort(int[] data) { w1@b5-  
quickSort(data,0,data.length-1); s~X*U&}5  
} O& %"F8B  
private void quickSort(int[] data,int i,int j){ pNE\@U|4E  
int pivotIndex=(i+j)/2; @ PoFxv  
file://swap fCf#zV[  
SortUtil.swap(data,pivotIndex,j); K}E7|gdG  
W#jZRviyq!  
int k=partition(data,i-1,j,data[j]); tWSvxGCzn%  
SortUtil.swap(data,k,j); R=9~*9  
if((k-i)>1) quickSort(data,i,k-1); u@_!mjXQ  
if((j-k)>1) quickSort(data,k+1,j); t_>bTcsU  
dEd]U49u  
} B5,QJ W*  
/** k)usUP'  
* @param data hdr}!w V  
* @param i JV]u(PL  
* @param j IgVo%)n  
* @return }pE~85h4M  
*/ zP(=,)d  
private int partition(int[] data, int l, int r,int pivot) { g2{H^YUN$_  
do{ SU%rWH  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (21 W6  
SortUtil.swap(data,l,r); 2iPmCG  
} Yl&tkSw46  
while(l SortUtil.swap(data,l,r); >PJtG]D  
return l; BnaU)E h  
} Vv yrty  
33<fN:J]f  
} OVUs]uK  
Xm8Z+}i  
改进后的快速排序: S}w.#tyEn  
12tJrS*Z  
package org.rut.util.algorithm.support; YF! &*6m  
`o_fUOe8a  
import org.rut.util.algorithm.SortUtil; tSb?]J  
uqa4&2(I=j  
/** UROj9CO v  
* @author treeroot ?H[5O+P[  
* @since 2006-2-2 8{G?92 {rN  
* @version 1.0  t$H':l0  
*/ pdi=6<?bd  
public class ImprovedQuickSort implements SortUtil.Sort { S"P9Nf?9  
'z-;*!A}j  
private static int MAX_STACK_SIZE=4096; OHHNWg_5  
private static int THRESHOLD=10; ," C[Qg(  
/* (non-Javadoc) y^ X\^Kq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XJmFJafQD  
*/ lHcZi  
public void sort(int[] data) { WXLe,7y  
int[] stack=new int[MAX_STACK_SIZE]; &R'w-0k_  
,l$NJt   
int top=-1; N4a`8dS|  
int pivot; Z#4JA/c!  
int pivotIndex,l,r; coF T2Pq  
% QPWw~}:  
stack[++top]=0; BEXQTM3])I  
stack[++top]=data.length-1; h"u<E\g  
'T)Or,d  
while(top>0){ m%oGzx+  
int j=stack[top--]; 2#AeN6\@  
int i=stack[top--]; OB?SkR  
kRN|TDx(  
pivotIndex=(i+j)/2; : F7k{~  
pivot=data[pivotIndex]; NV} RRs  
).NcLJw_  
SortUtil.swap(data,pivotIndex,j); ` URSv,(  
aFRTNu/r  
file://partition 9Qzjqq:"Li  
l=i-1; y Y>-MoF/t  
r=j; 1 [Sv  
do{ YVB% kKv{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W!/vm  
SortUtil.swap(data,l,r); U@.u-)oX  
} I!fB1aq-  
while(l SortUtil.swap(data,l,r); c q*p9c  
SortUtil.swap(data,l,j); _m9~*  
b:P\=k]8#  
if((l-i)>THRESHOLD){ x7 "z(rKl  
stack[++top]=i; X,RT<GNNb  
stack[++top]=l-1; (TEo_BW|+  
} 87^:<\pp  
if((j-l)>THRESHOLD){ \npz .g^c_  
stack[++top]=l+1; W\it+/  
stack[++top]=j; ;".z[l*  
} klgv{_b  
8yE!7$Mj  
} l60ikc4$I  
file://new InsertSort().sort(data); g!1I21M1~  
insertSort(data); \f(Y:}9  
} C(-[ Y!  
/** aGPqh,<QD  
* @param data Q0V^PDF  
*/ 0jR){G9+  
private void insertSort(int[] data) { T>#TDMU#Fm  
int temp; Y 3o^Euou  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +w "XNl  
} =m`l%V[  
} EfKM*;A  
} [O=W>l  
"A%MVym."  
} 9;=q=O/  
QF\kPk(CtD  
归并排序: W`#gpi)7N  
r2RBrZ@1  
package org.rut.util.algorithm.support; o;3j:# 3 |  
8NnhT E  
import org.rut.util.algorithm.SortUtil; x.I][(}  
u\`/Nhn  
/** F?7u~b|@{  
* @author treeroot F(deu^s%{  
* @since 2006-2-2 YMi/uy  
* @version 1.0 T`uDlo  
*/ Y|mW.  
public class MergeSort implements SortUtil.Sort{ s4 (Wp3>3i  
xXOR IlD  
/* (non-Javadoc) i wUv`>l&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PmHd9^C  
*/ ]de\i=?|  
public void sort(int[] data) { Ujf,6=M  
int[] temp=new int[data.length]; /K f L+"^|  
mergeSort(data,temp,0,data.length-1); iBucT"d]  
} 5i6VZv  
(I[s3EnhS  
private void mergeSort(int[] data,int[] temp,int l,int r){ > 84e`aGE  
int mid=(l+r)/2; 4 bn t=5]  
if(l==r) return ; *t^eNUA  
mergeSort(data,temp,l,mid); NN^QUB  
mergeSort(data,temp,mid+1,r); "c6<zP  
for(int i=l;i<=r;i++){ bV_j`:MD  
temp=data; i&JpM] N  
} +vf:z?I8  
int i1=l; YUCC*t  
int i2=mid+1; JRq3>P  
for(int cur=l;cur<=r;cur++){ >zQNHSi  
if(i1==mid+1) Uls+n@\!  
data[cur]=temp[i2++]; DE%fF,Hk3  
else if(i2>r) VrVDm*AGQ  
data[cur]=temp[i1++]; @a0Q0M  
else if(temp[i1] data[cur]=temp[i1++]; 975 _d_U  
else xpAok]  
data[cur]=temp[i2++]; ^CUSlnB\(  
} )#a7'Ba  
} }B`Ku5 M  
*,17x`1e  
} t ^m~  
>Co)2d]  
改进后的归并排序: " CM ucK  
c+8V|'4  
package org.rut.util.algorithm.support; _C20 +PMO  
ul$,q05nb  
import org.rut.util.algorithm.SortUtil; 6(Vhtr2( *  
J smB^  
/** ;`+`#h3-V  
* @author treeroot m^Glc?g<  
* @since 2006-2-2 Ls1B \Aw_  
* @version 1.0 _B3zRO  
*/ TKo<~?  
public class ImprovedMergeSort implements SortUtil.Sort { #ra*f~G  
+Juh:1H  
private static final int THRESHOLD = 10; 6|5H=*)DH  
`^x9(i/NE  
/* H'Nq#K  
* (non-Javadoc) -G-3q6A  
* tF^g<)S;t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eQ;Q4  
*/ gX^ PSsp  
public void sort(int[] data) { %&h c"7/k  
int[] temp=new int[data.length]; J#''q"rZ  
mergeSort(data,temp,0,data.length-1); n}JPYu  
} 9Sz7\W0  
Vc _:*  
private void mergeSort(int[] data, int[] temp, int l, int r) { A @2Bs 5F  
int i, j, k; e\D| o?v  
int mid = (l + r) / 2; U7h(-dV   
if (l == r) ?`H[u7*%  
return; P#MK  
if ((mid - l) >= THRESHOLD) &<Zdyf?[Ou  
mergeSort(data, temp, l, mid); ~>g+2]Bn>$  
else -9d%+O~v6~  
insertSort(data, l, mid - l + 1); &?y7I Pp  
if ((r - mid) > THRESHOLD) RkA8  
mergeSort(data, temp, mid + 1, r); WI&lj<*  
else &iBNO,v  
insertSort(data, mid + 1, r - mid); O%&cE*eX  
JRY_ nX  
for (i = l; i <= mid; i++) { Zj!Abji=O  
temp = data; G>K@AW #  
} APq7 f8t  
for (j = 1; j <= r - mid; j++) { Q+'nw9:;T  
temp[r - j + 1] = data[j + mid]; UV@0gdy[  
} G?xJv`"9iC  
int a = temp[l]; Bd# TUy  
int b = temp[r]; |55dbL$w  
for (i = l, j = r, k = l; k <= r; k++) { JNi=`X&A  
if (a < b) { "}zt`3  
data[k] = temp[i++]; 9->q|E4  
a = temp; y`S o&:1  
} else { m*Cu-6&qd  
data[k] = temp[j--]; o2naVxetE  
b = temp[j]; Skxd<gv  
} $(rc/h0/E  
} 2+Yb 7 uI,  
} e<"/'Ql!k  
59lj7  
/** sJU`u'w  
* @param data qybxXK:  
* @param l ^2C>L}  
* @param i jn=:G+0  
*/ Ilq=wPD}j  
private void insertSort(int[] data, int start, int len) { R5(T([w'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [E|uY]DR  
} fd1C {^c  
} y}"7e)|t%  
} 5JSrrpGr  
} x)oRSsv!Tr  
:FHA]oec1  
堆排序: Ej"u1F14J  
!YE zFU`L  
package org.rut.util.algorithm.support; # yN*',I&  
!%[S49s  
import org.rut.util.algorithm.SortUtil; ].mqxf  
o35fifM`  
/** 6Hf,6>  
* @author treeroot ,b|-rU\  
* @since 2006-2-2 Ch5+N6c^  
* @version 1.0 :NE/Ddgc'  
*/ f<=Fe:1.  
public class HeapSort implements SortUtil.Sort{ ^$NJD  
6R4<J% $P  
/* (non-Javadoc) ^R~~L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H=~9CJ+tc  
*/ (MLhaux-  
public void sort(int[] data) { +@:L|uFU  
MaxHeap h=new MaxHeap(); #fDs[  
h.init(data); ?9xu{B>6  
for(int i=0;i h.remove(); 3WUH~l{UJ  
System.arraycopy(h.queue,1,data,0,data.length); 5/@UVY9_  
} ~ap2m  
H"Dn]$Q\Z  
private static class MaxHeap{ +B"0{>n}F  
lr3mE  
void init(int[] data){ d%ME@6K)  
this.queue=new int[data.length+1]; Hj6'pJ4  
for(int i=0;i queue[++size]=data; ue{xnjw>U  
fixUp(size); ,={t8lN  
} {' 5qv@3  
} m;,xmEp  
7wVH8^|  
private int size=0; 5kMWW*Xtf  
.F2 :!h$  
private int[] queue; /,tAoa~FA  
(S /F)?  
public int get() { 'jfRt-_-  
return queue[1]; j-b*C2l  
} &c%Y<1e`%  
|yY`s6Uq  
public void remove() { NNkP\oh\  
SortUtil.swap(queue,1,size--); uY#TEjGh]  
fixDown(1); ;_+uSalt  
} {hdPhL  
file://fixdown ~Xv=9@,h  
private void fixDown(int k) { `dW]4>`O  
int j; w0J|u'H  
while ((j = k << 1) <= size) { \".^K5Pm  
if (j < size %26amp;%26amp; queue[j] j++; E>uVofhml  
if (queue[k]>queue[j]) file://不用交换 'Jj=RAV`  
break; z5 m>H;P  
SortUtil.swap(queue,j,k); wkb$^mU  
k = j; A9:NKY{z  
} uGVy6,  
} \RG!@$i  
private void fixUp(int k) {  9A$m$  
while (k > 1) { KZ:hKY@q  
int j = k >> 1; n/Dp"4H%q  
if (queue[j]>queue[k]) /-M@[p&  
break; ,kM)7!]N  
SortUtil.swap(queue,j,k); /X*oS&-M  
k = j; zfI}Q}p  
} Acm<-de  
} } cNW^4F  
~Y!kB:D5;~  
} MuI2?:~:*4  
.*/Fucr  
} {2KFD\i\  
%D=]ZV](  
SortUtil: Dr#c)P~Wd  
8Ogv9  
package org.rut.util.algorithm; F -gE<<  
=;L*<I  
import org.rut.util.algorithm.support.BubbleSort; uGP(R=H  
import org.rut.util.algorithm.support.HeapSort; rofNZ;nu  
import org.rut.util.algorithm.support.ImprovedMergeSort; q_fam,9  
import org.rut.util.algorithm.support.ImprovedQuickSort; }JgYCsF/f  
import org.rut.util.algorithm.support.InsertSort; 8|g<X1H{M  
import org.rut.util.algorithm.support.MergeSort; 8y2+&#$  
import org.rut.util.algorithm.support.QuickSort; dK9Zg,DZL  
import org.rut.util.algorithm.support.SelectionSort;  kLP0{A  
import org.rut.util.algorithm.support.ShellSort; UQ?%|y*Kc  
Xrqx\X  
/** A[N{  
* @author treeroot 0 p uY"[c  
* @since 2006-2-2 HIvZQQW|  
* @version 1.0 Xyx"A(v^l  
*/ ~Ci{3j :]  
public class SortUtil { iz[gHB  
public final static int INSERT = 1; MgMD\  
public final static int BUBBLE = 2; lS5ny  
public final static int SELECTION = 3; <i. a pBH  
public final static int SHELL = 4; {S.>BXX  
public final static int QUICK = 5; V"KS[>>f  
public final static int IMPROVED_QUICK = 6; |NFZ(6vNh  
public final static int MERGE = 7; Ctu?o+^;z  
public final static int IMPROVED_MERGE = 8; ~qP[eWe  
public final static int HEAP = 9; >{zk qvsQ&  
x!< yT?A  
public static void sort(int[] data) { |V,<+BEi  
sort(data, IMPROVED_QUICK); *f+: <=i  
} hGTV;eU  
private static String[] name={ *C|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^s:y/Kd  
}; >l5$9wO  
6<'K~1do:  
private static Sort[] impl=new Sort[]{ iw?I  
new InsertSort(), Tl("IhkC  
new BubbleSort(), >bo'Y9C  
new SelectionSort(), _GYMPq\%L#  
new ShellSort(), 2-+f1,  
new QuickSort(), aAt>QxGQW  
new ImprovedQuickSort(), qL /7^) (  
new MergeSort(), z?]G3$i(  
new ImprovedMergeSort(), -0uV z)  
new HeapSort() 2 @j";+  
}; 7Ke&0eAw  
Jf;?XP]z  
public static String toString(int algorithm){ ){;02^tX  
return name[algorithm-1]; kL*0M<0 (  
} qdD)e$XW,  
Q / x8 #X  
public static void sort(int[] data, int algorithm) { ~aK?cP  
impl[algorithm-1].sort(data); qt e>r  
} q OhO qV  
{p<Zbm.  
public static interface Sort { ( )T[$.(  
public void sort(int[] data); G=9d&N  
} a:STQk V  
SI:ifR&T  
public static void swap(int[] data, int i, int j) { 2][DZl  
int temp = data; &"Ux6mF-"  
data = data[j]; :;]Oc  
data[j] = temp; P\2M[Gu(Q  
} #;KsJb)N.  
} $14:(<  
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