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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。 =*@MQ  
插入排序: u&hDjE  
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package org.rut.util.algorithm.support; JNU"5sB  
?GaI6?lbn  
import org.rut.util.algorithm.SortUtil; }[XB]Xf  
/** 5P5A,K  
* @author treeroot &"@HWF  
* @since 2006-2-2 3:l:~Vn  
* @version 1.0 +H2m<  
*/ xMO[3 D&D  
public class InsertSort implements SortUtil.Sort{ g] 7{ 5  
s8`}x_k=  
/* (non-Javadoc) lq78gOg{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fjb4BdZ P  
*/ Y^*Lh/:h  
public void sort(int[] data) { A&X  
int temp; uOivnJ?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =%:n0S0C"  
} 'qD'PLV  
} )3D+gu  
} U]`'GM/x  
0xvMR&.H  
} Cy`<^_i  
F)[XIY&2/  
冒泡排序: F``EARG)iu  
%8rr*l5  
package org.rut.util.algorithm.support; Mm:a+T  
  2  
import org.rut.util.algorithm.SortUtil; Y&1!Z*OL;  
@'k,\$/  
/** Q{ |+ 3!!'  
* @author treeroot v%69]a-T  
* @since 2006-2-2 e{q p!N1!  
* @version 1.0 .P |+oYT&g  
*/ 7$Z)fkx.  
public class BubbleSort implements SortUtil.Sort{ >S-N|uR6  
t wa(M?  
/* (non-Javadoc) XC+F! R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '/gxjr&  
*/ #'G7mAoA  
public void sort(int[] data) { &UJ Ty'  
int temp; &k%wOz1vM  
for(int i=0;i for(int j=data.length-1;j>i;j--){ mTrI""Jsu;  
if(data[j] SortUtil.swap(data,j,j-1); .>AFf9P  
} (IO \+  
} L XTipWKz  
} ZYl-p]\*y  
} 6I5[^fv45G  
@SF" )j|  
} ^-c si   
WNF=NNO-R  
选择排序: +Zty}fe  
';fU.uy  
package org.rut.util.algorithm.support; ^Yf)lV&[  
fmZzBZ_  
import org.rut.util.algorithm.SortUtil; #V(Hk )  
qw Kh,[]  
/** gOES2 4$2  
* @author treeroot ATXx? b8h  
* @since 2006-2-2 ?=|) n%  
* @version 1.0 fxtYo,;$  
*/ 3LmBV\["  
public class SelectionSort implements SortUtil.Sort { @4  
XSHwE)m  
/* )P(d66yq'u  
* (non-Javadoc) ]VHdE_7)  
* e5"-4udCn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ')yF0  
*/ tswG"1R  
public void sort(int[] data) { iC5JU&l  
int temp; t<EX#_i,  
for (int i = 0; i < data.length; i++) { /FNj|7s  
int lowIndex = i; +^]PBMM1w  
for (int j = data.length - 1; j > i; j--) { U(Hq4D  
if (data[j] < data[lowIndex]) { }~Kyw7?  
lowIndex = j; b/D9P~cE  
} 4<eJ  
} zYgK$u^H  
SortUtil.swap(data,i,lowIndex); Is*0?9qU  
} ;03*qOYc  
} ]mJAKycE%  
8en#PH }  
} 6wvhvMkS  
;>QK}#'  
Shell排序: WkU) I2oH  
Tr}$Pb1  
package org.rut.util.algorithm.support;  S9ak '  
9{]r+z:  
import org.rut.util.algorithm.SortUtil; sP8-gkkor  
"#eNFCo7k  
/** W0uM?J\O  
* @author treeroot H?/cG_^y0  
* @since 2006-2-2 7]HIE]#  
* @version 1.0 _ /2 8Cw  
*/ K&"Pm9  
public class ShellSort implements SortUtil.Sort{ );/5#b@<Y  
RGPU~L  
/* (non-Javadoc) +D{*L0$D"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xz Gsfd  
*/ "=Fn.r4I  
public void sort(int[] data) { U~zN*2-  
for(int i=data.length/2;i>2;i/=2){ ekk&TTp#  
for(int j=0;j insertSort(data,j,i); MkV*+LXC  
} GWkJ/EX  
}  "ppb%=  
insertSort(data,0,1); o4I!VK(C#s  
} EuimZW\V  
1o"oa<*_  
/** 7yCx !P;  
* @param data 9|kEq>d  
* @param j %N_S/V0`  
* @param i Ll E_{||h  
*/ J/P@m_Yx  
private void insertSort(int[] data, int start, int inc) { +EB,7<5<  
int temp; 1-Wnc'(OK  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); LXLIos55S  
} EA@$^e[  
} GzZ|T7fm  
} m*Lv,yw %a  
`))J8j"  
} [XU{)l  
u>i+R"hi"  
快速排序: aBtfZDCfzp  
[@l v]+@  
package org.rut.util.algorithm.support; E,yzy[gl  
O t4+VbB6  
import org.rut.util.algorithm.SortUtil; ([XyW{=h!  
"62Ysapq+  
/** :M?')  
* @author treeroot !&:W1Jkp(  
* @since 2006-2-2 DSG +TA"  
* @version 1.0 4;~lpty  
*/ m&jt[   
public class QuickSort implements SortUtil.Sort{ q ]R @:a/  
17[t_T&Ak9  
/* (non-Javadoc) M0IqQM57N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X|n[9h:%  
*/ kFZu/HRI  
public void sort(int[] data) { >zx50e)  
quickSort(data,0,data.length-1); >p#d;wK4_  
} g #<?OFl  
private void quickSort(int[] data,int i,int j){ = ]HJa  
int pivotIndex=(i+j)/2; ZzaW@6LJF  
file://swap '  ^L  
SortUtil.swap(data,pivotIndex,j); j]F3[gpc  
E?5B>Jer#  
int k=partition(data,i-1,j,data[j]); ;NVTn<Uj  
SortUtil.swap(data,k,j); uM!r|X)8  
if((k-i)>1) quickSort(data,i,k-1); f!kdcr=/"  
if((j-k)>1) quickSort(data,k+1,j); iqKfMoy5  
{^O/MMB\\%  
} SVEA  
/** }PD(kk6fX  
* @param data w0%ex#lkm  
* @param i ]~x/8%e76  
* @param j :bF2b..XOu  
* @return %|6Q7'@p  
*/ 3'@jRK  
private int partition(int[] data, int l, int r,int pivot) { >U Ich  
do{ ^0?cyv\>LA  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )^2jsy -/  
SortUtil.swap(data,l,r); g<0%-p  
} n_ NG~ /x  
while(l SortUtil.swap(data,l,r); )^@V*$D  
return l; %B un@  
} [-94=|S @  
iW%0pLn  
} ,7$uh):  
kk./-G  
改进后的快速排序: X!HSS/'  
^>}[[:(6/  
package org.rut.util.algorithm.support; [67f;?b  
d1_*!LW$  
import org.rut.util.algorithm.SortUtil; JRs[%w`kD  
uC ;PP=z  
/** q@yabuN@,j  
* @author treeroot Z42Suy  
* @since 2006-2-2 r\- k/0  
* @version 1.0 [B;Ek \5W  
*/ -hV KPIb  
public class ImprovedQuickSort implements SortUtil.Sort { Q2WrB+/  
FrM~6A_  
private static int MAX_STACK_SIZE=4096; ~=]@], {  
private static int THRESHOLD=10; b6M)qt9R  
/* (non-Javadoc) K]Cs2IpI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iK0J{'  
*/ HQj4h]O#  
public void sort(int[] data) { /faP]J)  
int[] stack=new int[MAX_STACK_SIZE]; t-m,~IoW  
&zDFf9w2{  
int top=-1; Pb&+(j  
int pivot; @MH]s [{o\  
int pivotIndex,l,r; _; RD-kv  
N28?JQha  
stack[++top]=0; `D4'`Or-U  
stack[++top]=data.length-1; h/~BUg'  
d'nuk#r  
while(top>0){ ,'DrFlI  
int j=stack[top--]; 6y!?xot  
int i=stack[top--]; X(q=,^Mp  
gx R|S  
pivotIndex=(i+j)/2; hf5SpwxLiH  
pivot=data[pivotIndex]; mK/P4]9g  
&jd<rs5}  
SortUtil.swap(data,pivotIndex,j); ;AA7wK 4  
W%QtJB1)  
file://partition k(Xv&Zn  
l=i-1; 4^9_E &Fa  
r=j; QRa6*AYm  
do{ vy y\^nL  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SytDo (_=W  
SortUtil.swap(data,l,r); &Y2P!\\2  
} VQ}3r)ch  
while(l SortUtil.swap(data,l,r); l:}4 6%  
SortUtil.swap(data,l,j); -%$ dFq  
ee[NZz  
if((l-i)>THRESHOLD){ Pt;Ahmi  
stack[++top]=i; [,X,2  
stack[++top]=l-1; !9OgA  
} ()JDjzQT  
if((j-l)>THRESHOLD){ 6MQ:C'8T&=  
stack[++top]=l+1; QP0X8%+p  
stack[++top]=j; ZO$T/GE6%  
} 5ml}TSMu'  
n:] 1^wX#  
} |H@p^.;  
file://new InsertSort().sort(data); glIIJ5d|,  
insertSort(data); 4u7>NQUDu  
} a$& 6a   
/** !}48;Pl  
* @param data /a)=B)NH  
*/ Xh!Pg)|E  
private void insertSort(int[] data) { GQWTQIl]  
int temp; d'D\#+%> =  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?"u-@E[m  
} Ux]@p rAq  
} S*:w\nXP~  
} >ON.ftZ i  
]iX$p~riH  
} Rj= Om  
DlO;EH  
归并排序: j)*nE./3  
LRs; >O  
package org.rut.util.algorithm.support; >*CK@"o  
F x8)jBB_  
import org.rut.util.algorithm.SortUtil; KK|Jach  
l]&)an  
/** 1k i"UF/  
* @author treeroot x*V<afLY[  
* @since 2006-2-2 @U5>w\  
* @version 1.0 NDG Bvb  
*/ )Cfrqe1^  
public class MergeSort implements SortUtil.Sort{ E+ 20->  
rNp#5[e  
/* (non-Javadoc) Xpwom'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gjr2]t;E  
*/ 2 wvDC@  
public void sort(int[] data) { (P8oXb+%  
int[] temp=new int[data.length]; &i RX-)^u  
mergeSort(data,temp,0,data.length-1); r U5'hK  
} \ } f*   
xc?<:h"  
private void mergeSort(int[] data,int[] temp,int l,int r){ rfpxE>_|G  
int mid=(l+r)/2; 4F!d V;"Z(  
if(l==r) return ; [N)M]u  
mergeSort(data,temp,l,mid); (0f^Hh wF  
mergeSort(data,temp,mid+1,r); iq -o$6Pg  
for(int i=l;i<=r;i++){ G> >_G<x  
temp=data; s6uAF(4,  
} Cn '=_1p  
int i1=l; U7?ez  
int i2=mid+1; H skN(Ho  
for(int cur=l;cur<=r;cur++){ eRbO Hj1  
if(i1==mid+1) 8?XZF[D  
data[cur]=temp[i2++]; X.<R['U&\  
else if(i2>r) l[k$O$jo  
data[cur]=temp[i1++]; ? Y* PVx9Y  
else if(temp[i1] data[cur]=temp[i1++]; YZ@-0_Z  
else \f#ao<vQm  
data[cur]=temp[i2++]; [%kucGC7  
} _TF>c:m3  
} ls Ch K  
gZv <_0N  
} Hc9pWr "N  
SGm? "esEt  
改进后的归并排序: 9_{!nQC.g  
(=9&"UH  
package org.rut.util.algorithm.support; c2/HY8ttRD  
#J_i 5KmXJ  
import org.rut.util.algorithm.SortUtil; Gy%e%'  
1O4"MeF  
/** bk]|C!7$  
* @author treeroot ,vPF=wq  
* @since 2006-2-2 H;1}Nvvd  
* @version 1.0 ;\N*iN#K  
*/ $EF@x}h:A  
public class ImprovedMergeSort implements SortUtil.Sort { !4:,,!T  
oDa{HP\O]W  
private static final int THRESHOLD = 10; $}fA;BP  
2Fi*)\{  
/* ~l~g0J  
* (non-Javadoc) u7d]%<~'$F  
* {,=,0NQKn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `>Cx!sYhV  
*/ >^&+,*tsS4  
public void sort(int[] data) { KJ_R@,v\  
int[] temp=new int[data.length]; l.$#IE  
mergeSort(data,temp,0,data.length-1); T!bu}KO  
} HJmO+  
*b EsWeP  
private void mergeSort(int[] data, int[] temp, int l, int r) { r;z A `  
int i, j, k; 5,C,q%2  
int mid = (l + r) / 2; Df (6DuW  
if (l == r) o*_D  
return; 5mU_S\)4:z  
if ((mid - l) >= THRESHOLD) ^>fs  
mergeSort(data, temp, l, mid); "L]_NS T  
else j7&l&)5  
insertSort(data, l, mid - l + 1); @V)WJ {  
if ((r - mid) > THRESHOLD) q]x@q  
mergeSort(data, temp, mid + 1, r); uc_ X;M;  
else MXb(Z9)]kw  
insertSort(data, mid + 1, r - mid); |k+^D:  
KXJHb{?  
for (i = l; i <= mid; i++) { tF|bxXs Z  
temp = data; e 3K  
} bb{+  
for (j = 1; j <= r - mid; j++) { RulIzv  
temp[r - j + 1] = data[j + mid]; #82B`y<<y/  
} (P?9Jct  
int a = temp[l]; ry'(m M  
int b = temp[r]; Y~Rwsx  
for (i = l, j = r, k = l; k <= r; k++) { ]NCOi ?Odx  
if (a < b) { :"4~VDu  
data[k] = temp[i++]; kbY@Y,:w  
a = temp; =R05H2hs  
} else { W4<}w-AoEp  
data[k] = temp[j--]; x+pFu5,  
b = temp[j]; <  -Nj  
} Gkl#s7'  
} &kG<LGXP#  
} z?PF9QL1  
nB.p}k  
/** uyj5}F+O  
* @param data E O5Vg  
* @param l +~-|( y  
* @param i F}X_I  
*/ D)Zv  
private void insertSort(int[] data, int start, int len) { ;>~iCF k]?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^N]*Zf~N?  
} gnQd#`  
} |s:!LU&OL\  
} Sz =z TPnO  
} qVfOf\x.e  
D<MtLwH  
堆排序: \m<*3eS  
GB#7w82  
package org.rut.util.algorithm.support; O'k"6sBb  
Rh=h{O  
import org.rut.util.algorithm.SortUtil; :z[SI{Y  
s[hD9$VB>  
/** q bo`E!K  
* @author treeroot m*1=-" P  
* @since 2006-2-2 hYLu   
* @version 1.0 9I,Trk@&  
*/ D3]_AS&\  
public class HeapSort implements SortUtil.Sort{ '>Z Ou3>  
WDcjj1`l  
/* (non-Javadoc) 8W{R&Z7aL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O_ ~\$b  
*/ ]]+"`t,-  
public void sort(int[] data) { 7j^,4;  
MaxHeap h=new MaxHeap(); [8ih-k  
h.init(data); Y9ru~&/o$  
for(int i=0;i h.remove(); }u :sh >2  
System.arraycopy(h.queue,1,data,0,data.length); q N>j2~  
} k3&Wv  
7>#74oy  
private static class MaxHeap{ d2pVO]l YZ  
8"+Kz  
void init(int[] data){ !^y'G0  
this.queue=new int[data.length+1]; *cf#:5Nl  
for(int i=0;i queue[++size]=data; p &A3l  
fixUp(size); HM`;%0T0(  
} O[!]/qP+.  
} ig6F!p  
uKK+V6}!kj  
private int size=0; D_g+O"];P  
C&\#{m_1B  
private int[] queue; z Mtx>VI  
2QdqVwm  
public int get() { zhS\|tI  
return queue[1]; m}rUc29cS,  
} uT_bA0jK  
`rvS(p[s  
public void remove() { @,$>H 7o  
SortUtil.swap(queue,1,size--); @I9A"4Im  
fixDown(1); MFRM M%`  
} _G@)Bj^*  
file://fixdown L^dF )y?  
private void fixDown(int k) { rOX\rI%0+  
int j; `j9 ;9^  
while ((j = k << 1) <= size) { *4]}_ .rG#  
if (j < size %26amp;%26amp; queue[j] j++; X-=49)  
if (queue[k]>queue[j]) file://不用交换 nwf(`=TC  
break; W2'u]1bs  
SortUtil.swap(queue,j,k); /; w(1)B  
k = j; =nG g k}Z  
}  _->d41  
} `f S$@{YI_  
private void fixUp(int k) { xQ%N% `  
while (k > 1) { Dr)B0]KG  
int j = k >> 1; Ejmpg_kux  
if (queue[j]>queue[k]) @P@?KZ..v!  
break; qx|~H'UuBN  
SortUtil.swap(queue,j,k); }"Clv /3_  
k = j; ~ 6DaM!  
} ,N93H3(  
} ew?4;  
:<hM@>eFn  
} 7_HFQT1.N  
zc K`hS  
} sFt"2TVr3  
9(6f:D  
SortUtil: I'}&s|6  
Y7BmW+  
package org.rut.util.algorithm; @q]4]U)  
X lLG/N  
import org.rut.util.algorithm.support.BubbleSort; - ({h @  
import org.rut.util.algorithm.support.HeapSort; >e>%AMzo[  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4( $p8J  
import org.rut.util.algorithm.support.ImprovedQuickSort; R#HVrzOO|T  
import org.rut.util.algorithm.support.InsertSort; T[Lz4;TRk5  
import org.rut.util.algorithm.support.MergeSort; 0RgE~x!hI  
import org.rut.util.algorithm.support.QuickSort; KT[ZOtu  
import org.rut.util.algorithm.support.SelectionSort; Uo?4o*}  
import org.rut.util.algorithm.support.ShellSort; xqs ,4bcbY  
U$|q]N  
/** ^hNl6)hR  
* @author treeroot 0 30LT$&!  
* @since 2006-2-2 \#4mPk_"  
* @version 1.0 'Fy"|M;2  
*/ 1*" 7q9x  
public class SortUtil { #N"m[$;QR  
public final static int INSERT = 1; /yHjd s  
public final static int BUBBLE = 2; 3^[P  
public final static int SELECTION = 3; Bv<aB(c  
public final static int SHELL = 4; oqAO@<dL!  
public final static int QUICK = 5; _K}q%In  
public final static int IMPROVED_QUICK = 6; s]]lB018O\  
public final static int MERGE = 7; DkX^b:D*f  
public final static int IMPROVED_MERGE = 8; zOd* >  
public final static int HEAP = 9; URceq2_  
`;Ho<26  
public static void sort(int[] data) { D=Q.Q  
sort(data, IMPROVED_QUICK); 4GbfA .u  
}  9u^M{6  
private static String[] name={ "4\k1H"_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {CV+1kz  
}; /{f"0]-RA  
q8_(P&  
private static Sort[] impl=new Sort[]{ !m^;wkrY  
new InsertSort(), ").gPmC  
new BubbleSort(), "I66 @d?  
new SelectionSort(), qCg<g  
new ShellSort(), 9w- )??  
new QuickSort(), ^R=`<jx   
new ImprovedQuickSort(), D%~tU70a  
new MergeSort(), |Fe[RGi+8  
new ImprovedMergeSort(), 4j~q,# $LW  
new HeapSort() V:w%5'^3  
}; tPl 4'tW_  
0KnL{Cj   
public static String toString(int algorithm){ 2HtsSS#0Q  
return name[algorithm-1]; ]L97k(:Ib  
} ]f#s`.A~  
4^uSW&`;/  
public static void sort(int[] data, int algorithm) { 1l$2T y+ =  
impl[algorithm-1].sort(data); kV+^1@"  
} )O"E#%  
ydyTDn  
public static interface Sort { Rjq Xz6  
public void sort(int[] data); O`c+y  
} 3("C'(W  
y QClq{A  
public static void swap(int[] data, int i, int j) { Xd=KBB[r?  
int temp = data; (B>/LsTu  
data = data[j]; k?Z:=.YW  
data[j] = temp; l3sF/zkH  
} ]:OrGD"  
} O;~e^ <*  
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