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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。 67H?xsk@n  
插入排序:  EAr;  
S,|ZCl>+  
package org.rut.util.algorithm.support; J 7dHD(R8  
]p4?nT@]  
import org.rut.util.algorithm.SortUtil; S+Ia2O)BA  
/** ^v5]Aq~X  
* @author treeroot ON{a'H  
* @since 2006-2-2 qb=%W  
* @version 1.0 usKP9[T$  
*/ DIP%*b#l$\  
public class InsertSort implements SortUtil.Sort{ s9Tn|Pm+!\  
KDf#e3  
/* (non-Javadoc) v0!(&g 3Sd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) | h"$  
*/ [SKDsJRPP  
public void sort(int[] data) { eMEKR5*-O  
int temp; 1f"}]MbLR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [".94(qs  
} 5Uhxl^c  
} 8.%wnH  
} ME)='~E  
)_Hv9!U]e  
} fMHw=wJQ  
HdY#cVxy  
冒泡排序: Y[VXx8"p  
0%|)=T3Slu  
package org.rut.util.algorithm.support; _h,X3P   
4y4r;[@U  
import org.rut.util.algorithm.SortUtil; <%|u1cn~!v  
7N5M=f.DS(  
/** 2cS94h  
* @author treeroot TZn5s~t  
* @since 2006-2-2 G&Yo2aADR  
* @version 1.0 HsRoiqo  
*/ mICx9oz]  
public class BubbleSort implements SortUtil.Sort{ x~IrqdmW  
.4w"3>  
/* (non-Javadoc) Xmb##:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jp8,s%  
*/ I@Y k &aU  
public void sort(int[] data) { _TJk Yz$  
int temp; Z,-TMtM7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ VgY6M_V  
if(data[j] SortUtil.swap(data,j,j-1); q)@;8Z=_c  
} c/F!cW{z^  
} <Nloh+n=  
} vy7?]}MvV  
} wsR\qq  
{65Y Tt%  
} G7GKO  
ZOppec1D  
选择排序: 9qzHy}A  
A;^{%S  
package org.rut.util.algorithm.support; "WPWMQ+  
 YO fYa  
import org.rut.util.algorithm.SortUtil; 6/'X$}X  
b; vVlIG  
/** 2>J;P C[;  
* @author treeroot XfEp_.~JM  
* @since 2006-2-2 )\W}&9 >  
* @version 1.0 6Y.k<oem  
*/ LF (S"Of  
public class SelectionSort implements SortUtil.Sort { /7a3*a  
3c:fYE  
/* %rl<%%T#.M  
* (non-Javadoc) KAT"!b   
* TL -AL tG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KZ=5"a  
*/ V.+a}J=Cw  
public void sort(int[] data) { W=#jtU`:5  
int temp; gId :IR  
for (int i = 0; i < data.length; i++) { 'Vhnio;qC  
int lowIndex = i; nkN2Bqt$  
for (int j = data.length - 1; j > i; j--) { C(KV5c  
if (data[j] < data[lowIndex]) { D51O/.:U2  
lowIndex = j; x6\^dVR}  
} gA 5DEit  
} uc=u4@.>  
SortUtil.swap(data,i,lowIndex); W3X;c*j  
} or)fx/%h  
} |\C.il7  
Y'}c$*OkI  
} :4\_upRE  
h7xgLe@  
Shell排序: hbx+*KM  
,oEAWNbgQ  
package org.rut.util.algorithm.support; b$*G&d5  
K)\D,5X^  
import org.rut.util.algorithm.SortUtil; d(5j#?  
p-z!i+  
/** .Rb4zLYL*w  
* @author treeroot AO7X-,  
* @since 2006-2-2 7 lq$PsC  
* @version 1.0 L<Z2  
*/ ?Qpi(Czbpq  
public class ShellSort implements SortUtil.Sort{ e&m TaCLG  
@ L/i  
/* (non-Javadoc) -H 5-6w$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3m~3l d  
*/ *JWPt(bnI  
public void sort(int[] data) { cvpZF5mL]U  
for(int i=data.length/2;i>2;i/=2){ (5RZLRn  
for(int j=0;j insertSort(data,j,i); &k(tDP  
} )1)&fN41i#  
} IJ{VCzi  
insertSort(data,0,1); Z#GR)jb+  
} \x_$Pu  
mm | *  
/** ])zpx-  
* @param data ]go.IfH  
* @param j nF 'U*  
* @param i 1u* (=!  
*/ X(]J\?n'  
private void insertSort(int[] data, int start, int inc) { On@p5YRwW  
int temp; {#+'T13sx  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,(+ZD@Rg  
} G<~P||Lu^  
} q}&+{dN\1  
} You~ 6d6Om  
L[:M[,?=`  
} .4=A:9  
MR* % lZpB  
快速排序: (Q|Y*yI  
(B].ppBii  
package org.rut.util.algorithm.support; hLyV'*}  
8PGuZw<  
import org.rut.util.algorithm.SortUtil; ;s-fYS6(>{  
4DGKZh'm"  
/** \JF 2'm\M  
* @author treeroot b]WvKdq  
* @since 2006-2-2 r+MqjdXG  
* @version 1.0 :O*62olC5  
*/ uD`Z\@Z  
public class QuickSort implements SortUtil.Sort{ hnv0Loe.IW  
H|cxy?iJ  
/* (non-Javadoc) 1a#R7chl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ve*6WDK,H  
*/ (`f)Tt=`  
public void sort(int[] data) { ( "J_< p  
quickSort(data,0,data.length-1); \=@4F^U7`  
} W jBtL52  
private void quickSort(int[] data,int i,int j){ w< |Lx#L}  
int pivotIndex=(i+j)/2; *jy"g64j  
file://swap S|B S;VY  
SortUtil.swap(data,pivotIndex,j); ,\PTn7_  
1[". z{V3*  
int k=partition(data,i-1,j,data[j]); 4 ..V  
SortUtil.swap(data,k,j); 9kas]zQ%=P  
if((k-i)>1) quickSort(data,i,k-1); y)`q% J&  
if((j-k)>1) quickSort(data,k+1,j); pf_`{2.\uO  
\j vS`+  
} XP@&I[J3sI  
/** .@Jos^rxgJ  
* @param data Dr#V^"Dte  
* @param i ,j[1!*Z_[  
* @param j `$r?^|T  
* @return PW-sF  
*/ M3q7{w*bM  
private int partition(int[] data, int l, int r,int pivot) { fR lJ`\ t  
do{ v/G^yZa  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ??Dv\yLZI  
SortUtil.swap(data,l,r); Ozc9yy!%  
} 8j@ADfZ9  
while(l SortUtil.swap(data,l,r); GF*E+/ ;  
return l; AyMbwCR"X  
} 7+J<N@.d  
zXeBUbVi  
} MAG /7T5  
V5]\|?=  
改进后的快速排序: n,|YJ,v[  
/_/Z/D!  
package org.rut.util.algorithm.support; Hd~fSXFl  
<V4"+5cJ8  
import org.rut.util.algorithm.SortUtil; d|$-l:(J  
+PHuQ  
/** nZkMyRk  
* @author treeroot Ea N^<  
* @since 2006-2-2 -k@Uo(MB  
* @version 1.0  ev(E  
*/ /C[XC7^4'  
public class ImprovedQuickSort implements SortUtil.Sort { N|s8PIcSp  
(FNX>2Mv  
private static int MAX_STACK_SIZE=4096; N_y#Y{c{(  
private static int THRESHOLD=10; X#u< 3<P  
/* (non-Javadoc) 2H`;?#Uq:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vb k4  
*/ :j% B(@b  
public void sort(int[] data) { g+u5u\k  
int[] stack=new int[MAX_STACK_SIZE]; KU;m.{  
M0uC0\' #P  
int top=-1; ~RnBs`&!  
int pivot; qnU$Pd  
int pivotIndex,l,r; lKy4Nry9  
1?#Wg>7'  
stack[++top]=0; c}#(,<8X  
stack[++top]=data.length-1; @-}!o&G0  
Z+! 96LR  
while(top>0){ q3Y49d  
int j=stack[top--]; _1HEGX\  
int i=stack[top--]; uGS^*W$  
>qynd'eToR  
pivotIndex=(i+j)/2; ' ui`EL%  
pivot=data[pivotIndex]; vjXCArS  
v 1Jg8L=  
SortUtil.swap(data,pivotIndex,j); { :_qa|  
C~VyM1inD  
file://partition W:=CpbwENX  
l=i-1; ZY> u4v.  
r=j; ;F>I+l_X  
do{  2dBjc{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )N]%cO(^  
SortUtil.swap(data,l,r); azp XE  
} [ r=U-  
while(l SortUtil.swap(data,l,r); * uZ'MS  
SortUtil.swap(data,l,j); L~L]MC&  
M% FKg/  
if((l-i)>THRESHOLD){ Zq"wq[GCN  
stack[++top]=i; A/*h[N+2!  
stack[++top]=l-1; *Ja,3Qq  
} xT3l>9i  
if((j-l)>THRESHOLD){ Dlu]4n[LB  
stack[++top]=l+1; 7#iT33(3  
stack[++top]=j; C)qP9uW  
} ,DWC=:@X  
|:d:uj/  
} mi{ r7.e5I  
file://new InsertSort().sort(data); jh.e&6  
insertSort(data); 1"HSM =p  
} v`u>; S_  
/** 7)v`l1  
* @param data Zl`sY5{1  
*/ N`i`[ f  
private void insertSort(int[] data) { %c,CfhEV%&  
int temp; STQ~mFs"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {_*$X  
} ffE>%M*  
} JQWW's}  
} v D4<G{  
lIL{*q(  
} ,V:RE y  
TGQDt|+Z  
归并排序: $^"_Fox]A\  
dq$C COC^F  
package org.rut.util.algorithm.support; 'QEQyJ0EB  
7_ah1IEK  
import org.rut.util.algorithm.SortUtil; KdTna6nY  
xDBHnr}[  
/** q5(Z   
* @author treeroot )v?-[ oR  
* @since 2006-2-2 (L6*#!Dt  
* @version 1.0 X~Vr}  
*/ $8,/[V A  
public class MergeSort implements SortUtil.Sort{ QG=&{-I~[3  
VNLggeX'U  
/* (non-Javadoc) n`)wD~mk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zr@G  
*/ PyfOBse}r  
public void sort(int[] data) { #2*2xt  
int[] temp=new int[data.length]; 6J%+pt[tu  
mergeSort(data,temp,0,data.length-1); N8:&v  
} ,\ RxKSU  
9d!}]+"d42  
private void mergeSort(int[] data,int[] temp,int l,int r){ -a$7b;gF  
int mid=(l+r)/2; XZ8;Ow=  
if(l==r) return ; mh8~w~/[  
mergeSort(data,temp,l,mid); tpi>$:e  
mergeSort(data,temp,mid+1,r); spt='!)4  
for(int i=l;i<=r;i++){ Ev;ocb,  
temp=data; vVi))%&S(  
} g$ oe00b  
int i1=l; )z#M_[zC>  
int i2=mid+1; uua1_# a  
for(int cur=l;cur<=r;cur++){ *!y.!v*  
if(i1==mid+1) ,o)U9 <  
data[cur]=temp[i2++]; Q-GnNT7MB3  
else if(i2>r) hq^@t6!C\m  
data[cur]=temp[i1++]; pJ1Q~tI  
else if(temp[i1] data[cur]=temp[i1++]; 8QGj:3  
else `FM^)(wT  
data[cur]=temp[i2++]; A{Q:,S)  
} +t XOP|X  
} ihJC)m`Hbl  
y 3O Nn~k  
} ;hLne0|)}  
[oQ&}3\XJ  
改进后的归并排序: j\SW~}d9  
Rl"" aZ  
package org.rut.util.algorithm.support; yxa~R z/  
3y Azt*dZ  
import org.rut.util.algorithm.SortUtil; vYNh0)$%F  
}3Y3f).ZW  
/** ?=uw0~O[  
* @author treeroot z!I(B^)BkT  
* @since 2006-2-2 5Y8/ZW~D0  
* @version 1.0 R]Q4+  
*/ o= %Fh  
public class ImprovedMergeSort implements SortUtil.Sort { uvrfR?%QK  
1=t\|Th-  
private static final int THRESHOLD = 10; emV@kN.  
9)qjW&`  
/* d6.9]V?  
* (non-Javadoc) ?DC3BA\)  
* N|ut^X+|\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $v6dB {%Qu  
*/ Pl }dA  
public void sort(int[] data) { 7^~pOFdH  
int[] temp=new int[data.length]; _;B N;].  
mergeSort(data,temp,0,data.length-1); 4JHFn [%  
} oIM]  
ya'@AJS  
private void mergeSort(int[] data, int[] temp, int l, int r) { $[Fh|%\  
int i, j, k; [N/[7Q/y  
int mid = (l + r) / 2; u= K?K  
if (l == r) gi7As$+E  
return; n8M/Y}mH   
if ((mid - l) >= THRESHOLD) M,Px.@tw.  
mergeSort(data, temp, l, mid); *s6MF{Ds  
else pAV}hB  
insertSort(data, l, mid - l + 1); T@]vjXd![  
if ((r - mid) > THRESHOLD) (r^IW{IndX  
mergeSort(data, temp, mid + 1, r);  /y,~?  
else g'`J'6Pn  
insertSort(data, mid + 1, r - mid); )]%GNdU  
k:w\4Oqd  
for (i = l; i <= mid; i++) { q*ZjOqj  
temp = data; { A(= phN  
} By@<N [I@  
for (j = 1; j <= r - mid; j++) { +mP3 y~|-j  
temp[r - j + 1] = data[j + mid]; BcT|TX+ct  
} 1Ly?XNS  
int a = temp[l]; )G6]r$M>o0  
int b = temp[r]; 2 f]9I1{  
for (i = l, j = r, k = l; k <= r; k++) { 2I'\o7Y  
if (a < b) { Wv"[,5 Z13  
data[k] = temp[i++]; 'Z7oPq6  
a = temp; 0n_Cuh\  
} else { O4&/g-  
data[k] = temp[j--];  IjDG  
b = temp[j]; ~`{HWmah  
} fwIZr~l  
} U3^T.i"R  
} eN%Ks  
Y:VM 5r)  
/** I,AI$A  
* @param data 3yXF| yV  
* @param l &,fBg6A%  
* @param i Z$,1Tk"O/s  
*/ `ge{KB;*n#  
private void insertSort(int[] data, int start, int len) { r! 5C3  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); CD^_>sya  
} _SC>EP8:Z  
} R$*{@U  
} WZCX&ui  
} { >Y<!  
c*_I1}l  
堆排序: _-Aw`<_*-  
;X\>oV3#  
package org.rut.util.algorithm.support; ?/{ qRz'C<  
xGqe )M>8?  
import org.rut.util.algorithm.SortUtil; a'Qy]P}'Ug  
q01zN:|-1  
/** P!m~tu}B  
* @author treeroot @-;-DB]j  
* @since 2006-2-2 Xig+[2zS  
* @version 1.0 1` m ~c  
*/ yaA9* k  
public class HeapSort implements SortUtil.Sort{ 5in6Y5ckj  
wLU w'Ai  
/* (non-Javadoc) ^<<( }3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5gV8=Ml"V  
*/ ag?@5q3J}  
public void sort(int[] data) { L"tj DAV  
MaxHeap h=new MaxHeap(); ^?toTU   
h.init(data); _q=$L eO5  
for(int i=0;i h.remove(); /Yx 1S'5  
System.arraycopy(h.queue,1,data,0,data.length); mxQS9y  
} s+^o[R T3  
>lyUr*4PX  
private static class MaxHeap{ mb?DnP,z  
i2$U##-ro]  
void init(int[] data){ d Z"bc]z{  
this.queue=new int[data.length+1]; )u ]<8  
for(int i=0;i queue[++size]=data; Tc\^=e^N?  
fixUp(size); S_6`.@B}  
} 7esG$sVj(  
} tZU"Ud  
A@_F ;4X  
private int size=0; Z[AJat@H  
E] t:_v  
private int[] queue; J(M0t~RZ  
ez86+  
public int get() { T[<llh'+  
return queue[1]; xvjHGgWSxc  
} QhZ!A?':U  
/43DR;4  
public void remove() { ssi{(}H/Jv  
SortUtil.swap(queue,1,size--); JO7IzD\  
fixDown(1); BaiC;&(   
} YT, 1E>rd  
file://fixdown `U!eh1*b  
private void fixDown(int k) { ED"5y  
int j; Y#{KGVT<  
while ((j = k << 1) <= size) { 8o4<F%ot  
if (j < size %26amp;%26amp; queue[j] j++; F!`.y7hY@  
if (queue[k]>queue[j]) file://不用交换 g=b[V   
break; $|6Le; K  
SortUtil.swap(queue,j,k); cdP+X'Y4D  
k = j; ))G%C6-  
} Si*Pi  
} GMgsM6.R  
private void fixUp(int k) { d)r=W@tF]  
while (k > 1) { \D,0  
int j = k >> 1; ,`/!0Wmt  
if (queue[j]>queue[k]) ui G7  
break; G ~a/g6M4  
SortUtil.swap(queue,j,k); yKOf]m>#  
k = j; 5&2=;?EO  
} `W?aq]4x5  
} '/;#{("  
*-_` xe  
} ):LJ {.0R  
IDE@{Dy  
} UH%?{>oRh  
Cl<` uW3  
SortUtil: q'+XTal  
 vxr3|2`  
package org.rut.util.algorithm; :XBeGNI*#  
l%fnGe` _  
import org.rut.util.algorithm.support.BubbleSort; StP6G ]x  
import org.rut.util.algorithm.support.HeapSort; 0NpxqeIDY  
import org.rut.util.algorithm.support.ImprovedMergeSort; )/bt/,M&}  
import org.rut.util.algorithm.support.ImprovedQuickSort; S][: b  
import org.rut.util.algorithm.support.InsertSort; : [aUpX=  
import org.rut.util.algorithm.support.MergeSort; A+Y>1-=JO  
import org.rut.util.algorithm.support.QuickSort; Lkk'y})/  
import org.rut.util.algorithm.support.SelectionSort; yn!LJT[~2  
import org.rut.util.algorithm.support.ShellSort; c !P9`l~MQ  
3Eiy/  
/** ?)4|WN|c_  
* @author treeroot 1xM&"p:  
* @since 2006-2-2 _=q)lt-UY  
* @version 1.0 }#EiL !Pv  
*/ c4L5"_#`x-  
public class SortUtil { X"iy.@7  
public final static int INSERT = 1; X-oou'4<  
public final static int BUBBLE = 2; 3{d1Jk/S  
public final static int SELECTION = 3; wzo-V^+q  
public final static int SHELL = 4; fRaVY`|wK  
public final static int QUICK = 5; b%,5B  
public final static int IMPROVED_QUICK = 6; A{9Hm:)  
public final static int MERGE = 7; |%&WYm6&#  
public final static int IMPROVED_MERGE = 8; B`RbXk68q  
public final static int HEAP = 9; 1/gY]ghL  
"M_X9n_  
public static void sort(int[] data) { ~O@V;y  
sort(data, IMPROVED_QUICK); o~<fw]y  
} oc\rQ?  
private static String[] name={ }4_izKS  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7i 334iQZ  
}; te" 8ZmJ  
a4g=cs<9}  
private static Sort[] impl=new Sort[]{ vWe)cJ  
new InsertSort(), 8EbYk2j  
new BubbleSort(), _~Lhc'^p*  
new SelectionSort(), s}`=pk/FM  
new ShellSort(), V%e'H>EC  
new QuickSort(), Eto0>YyZ  
new ImprovedQuickSort(), 4vBZb^W;9  
new MergeSort(), Z9=Cw0( w?  
new ImprovedMergeSort(), Lk#u^|Eq7=  
new HeapSort() Xb$)}n\9  
}; ~+3f8%   
6<]&T lS]  
public static String toString(int algorithm){  <MvFAuAT  
return name[algorithm-1]; f_D1zU^  
} /,E%)K;  
Y/gVyQ(  
public static void sort(int[] data, int algorithm) { 1mI)xDi9  
impl[algorithm-1].sort(data); w4(DR?[nC  
} w`>xK sKW>  
d<7xSRC   
public static interface Sort { x-y=Jor  
public void sort(int[] data); QhpE2ICU  
} Z?"Pkc.Ei  
3gv>AgG  
public static void swap(int[] data, int i, int j) { eg?vYW  
int temp = data; jn)~@~c  
data = data[j]; m]7yc>uDy  
data[j] = temp; 2R2Z6}  
} /=m=i%& #  
} db.iMBki  
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