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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。 Y'58.8hl  
插入排序: C4ge_u#  
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package org.rut.util.algorithm.support; MK,#"Ty}zK  
ONg_3vD{  
import org.rut.util.algorithm.SortUtil; GkVV%0;&J1  
/** (FP- K  
* @author treeroot [8![UcMq  
* @since 2006-2-2 p%8y!^g  
* @version 1.0 / F9BbG{  
*/ *IfLoKS'  
public class InsertSort implements SortUtil.Sort{ ] vQn*T"^  
kk& ([ xqU  
/* (non-Javadoc) <$R'y6U :  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SK#; /fav6  
*/ *$Bx#0J8  
public void sort(int[] data) { qo/`9%^E?  
int temp; iU5M_M$G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kect)=T(  
} 0"LJ{:plz  
} Nn>Oq+:  
} ??)IPRv?yF  
#,lJ>mTe4  
} [s"xOP9R  
AfB,`l`k  
冒泡排序: s&TPG0W  
AKu]c-  
package org.rut.util.algorithm.support; Igrr"NuDZ  
2XNO*zbve  
import org.rut.util.algorithm.SortUtil; h:[%' htz  
/5pVzv+rm  
/** w a2?%y_G  
* @author treeroot !UDTNF?1  
* @since 2006-2-2 L3pNna  
* @version 1.0 }I`"$2   
*/ /'O? 8X<  
public class BubbleSort implements SortUtil.Sort{ nF`_3U8e  
=~15q=XY0  
/* (non-Javadoc) '9.L5*wh]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !W^P|:Qt  
*/ B _k+Oa2!  
public void sort(int[] data) { ,=jwQG4wq  
int temp; bdbTK8-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ t}w<xe  
if(data[j] SortUtil.swap(data,j,j-1); b9X"p*'p  
} b8@?fC+tm  
} gw O]U=Y  
} +~Wg@   
} m -]E|  
$MhfGMk!'  
} fAYp\ k  
crTRfqF  
选择排序: }xJ ).D  
)&Af[m S  
package org.rut.util.algorithm.support; =jz [}5  
)jm!bR`  
import org.rut.util.algorithm.SortUtil; yGj'0c::  
b v5BV  
/** @|N{E I  
* @author treeroot 2K wr=t  
* @since 2006-2-2 @` 5P^H7  
* @version 1.0 3:qn\"Hj  
*/ pV[SY6/  
public class SelectionSort implements SortUtil.Sort { E&G]R!  
dT?mMTKn+  
/* "!,)Pv  
* (non-Javadoc) Tg/?v3M88  
*  r"YOA@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ ]v>#VXr_  
*/ xe`SnJgA  
public void sort(int[] data) { >W>3w  
int temp; @KJ~M3d0l  
for (int i = 0; i < data.length; i++) { E/OfkL*\  
int lowIndex = i; cb82k[L6  
for (int j = data.length - 1; j > i; j--) { ?vh1 >1D  
if (data[j] < data[lowIndex]) { JIL(\d  
lowIndex = j; q!f'?yFYK  
} GBSuTu8  
} a1#",%{I  
SortUtil.swap(data,i,lowIndex); vLI'Z)\  
} ]Ub"NLYV  
} grVPu! B;  
-RI&uFqOI  
} :yxP3e%rp  
4m1@lnjp  
Shell排序:  \uG^w(*)  
yo^M>^P\N  
package org.rut.util.algorithm.support; L5DeLF+  
>v#6SDg  
import org.rut.util.algorithm.SortUtil; e5 N$+P"  
 hik.c3  
/** 2,'~'  
* @author treeroot W>y >  
* @since 2006-2-2 Bi-x gq'z  
* @version 1.0 '/2)I8  
*/ z#HNJAQ#|  
public class ShellSort implements SortUtil.Sort{ b]5/IT)@O  
yByxy-~  
/* (non-Javadoc) Mh "iyDGA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #u"$\[G  
*/ jI/#NCKE  
public void sort(int[] data) { k|4}Do%;  
for(int i=data.length/2;i>2;i/=2){ 7x=-1wbi  
for(int j=0;j insertSort(data,j,i); |Ml~_m  
} y3@m1>]09  
} thLx!t  
insertSort(data,0,1); z?<Xx?Kk  
} a! gj_  
>c)-o}bd^  
/** ^UmhSxQ##  
* @param data Qa#Em1co  
* @param j ^Ycn&`s  
* @param i v`&>m '  
*/ ]kdU]}z  
private void insertSort(int[] data, int start, int inc) { c8h71Cr  
int temp; kF-7OX0)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); o%E-K=a  
} E>c*A40=.n  
} tS3!cO\  
} OE/r0C<&  
!ZS5}/ZU  
} L'HO"EZFj  
\=c@  
快速排序: )0o|u>  
*4y0Hq  
package org.rut.util.algorithm.support; ?>Bt|[p:s)  
]|QA`5=$  
import org.rut.util.algorithm.SortUtil; '$h0l-mQ  
}6To(*  
/** 1VA%xOURh  
* @author treeroot m`&6[[)6~  
* @since 2006-2-2 RveEA/&&  
* @version 1.0 Zx&=K"  
*/ $C t(M)  
public class QuickSort implements SortUtil.Sort{ U!b~vrr^  
KBI36=UV  
/* (non-Javadoc) 0`4Fa^o]h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =zW`+++3  
*/ Wgm{ ]9Q  
public void sort(int[] data) { wvI}|c  
quickSort(data,0,data.length-1); %Vb~}sT:  
} zP>=K  
private void quickSort(int[] data,int i,int j){ nNhb,J  
int pivotIndex=(i+j)/2; DD'RSV5]  
file://swap G&q@B`I  
SortUtil.swap(data,pivotIndex,j); zB8J|uG  
.Fx-$Yqy  
int k=partition(data,i-1,j,data[j]); , }B{)  
SortUtil.swap(data,k,j); YeI|&FMX  
if((k-i)>1) quickSort(data,i,k-1); o4H'  
if((j-k)>1) quickSort(data,k+1,j); ._p^0UxT  
!JQ'~#jKN  
} chu r(@Af  
/** /6FPiASbS  
* @param data X\|h:ce  
* @param i OouR4  
* @param j YR"IPyj  
* @return (m() r0:@  
*/ 2Uy}#n|)r  
private int partition(int[] data, int l, int r,int pivot) { u vyvy  
do{ +7Qj%x\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); XZ 4H(Cj  
SortUtil.swap(data,l,r); Bgs,6:  
} \ccCrDz  
while(l SortUtil.swap(data,l,r); r12e26_Ab  
return l; 2{01i)2y  
} ;HmQRiCg  
m }\L i]  
} MC_i"P6a  
^ux"<?  
改进后的快速排序: OSkBBo]~z  
\4|osZ0y  
package org.rut.util.algorithm.support; e0g>.P@6  
'ALe>\WO  
import org.rut.util.algorithm.SortUtil; Bg}(Sy  
4Y{&y6  
/** i}kMo@  
* @author treeroot {^@qfkZz^  
* @since 2006-2-2 b/UjKNf@  
* @version 1.0 jN%+)Kj0C)  
*/ sDS0cc6e  
public class ImprovedQuickSort implements SortUtil.Sort { sf,9Ym  
$+n5l@W  
private static int MAX_STACK_SIZE=4096; i&Me7=~  
private static int THRESHOLD=10; `l-R?C?*!  
/* (non-Javadoc) xeSv+I-b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q;<Q-jr&O  
*/ ~2}^ -,  
public void sort(int[] data) { 2(>=@q.1H  
int[] stack=new int[MAX_STACK_SIZE]; ++CL0S$e  
8]&lUMaqVZ  
int top=-1; S%7%@Qs"%  
int pivot; 70E@h=oQ  
int pivotIndex,l,r; W C3b_ia  
rm!.J0 X  
stack[++top]=0; ^"4u1  
stack[++top]=data.length-1; A[N>T\  
F <.} q|b  
while(top>0){ m@y_Wt  
int j=stack[top--]; 4(p,@e31  
int i=stack[top--]; sX#7;,Ft7  
% ^&D,  
pivotIndex=(i+j)/2; C72btS  
pivot=data[pivotIndex]; P"k,[ZQ  
MJ~)CiKgN  
SortUtil.swap(data,pivotIndex,j); `bEum3l\6]  
MKr:a]-'f~  
file://partition o88Dz}a  
l=i-1; 1~9AQ[]w8  
r=j; ;aUI3n%  
do{ -0:B2B  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hionR)R4  
SortUtil.swap(data,l,r); Xj;5i Vq  
} -1 _7z{.  
while(l SortUtil.swap(data,l,r); 9p9-tJfH.  
SortUtil.swap(data,l,j); o/p'eY:)  
Lz;E/a}s  
if((l-i)>THRESHOLD){ g<PdiVp+  
stack[++top]=i; P8;f^3V(+/  
stack[++top]=l-1; ot.R Gpg%  
} fa;GM7<e)  
if((j-l)>THRESHOLD){ <>K@#|%Y&  
stack[++top]=l+1; ^<nN~@j  
stack[++top]=j; gfAVxMg  
} 'gv7&$X}4  
g bwg3$!9  
} !Mk:rO-L  
file://new InsertSort().sort(data); 2`w\<h  
insertSort(data); aoS]Qp  
} o)IcAqN$H  
/** 1@A*Jj[R%  
* @param data 4r>buEU  
*/ a3oSSkT  
private void insertSort(int[] data) { m&Lc."  
int temp; {>=#7e-]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c}g:vh  
} X5eTj  
} xn)r6  
} &_y+hV{  
[EV}P&U  
} N0G-/  
R7!^ M  
归并排序: ;t}ux  
"rI By  
package org.rut.util.algorithm.support; o'nrLI(t  
hy|X(m  
import org.rut.util.algorithm.SortUtil; 2 -M]!x)  
A[m4do  
/** AAt<{  
* @author treeroot ld*RL:G  
* @since 2006-2-2 Rd.[8#7VE  
* @version 1.0 !T 3 Esv  
*/ g_w4}!|  
public class MergeSort implements SortUtil.Sort{ to*<W,I  
U[8Cg  
/* (non-Javadoc) ()+;KF8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @7 *Ag~MRb  
*/ er0ClvB  
public void sort(int[] data) { A4W61f  
int[] temp=new int[data.length]; v]HiG_C  
mergeSort(data,temp,0,data.length-1); `;R|SyrX  
} -/ #tQ~{gs  
6axm H~_  
private void mergeSort(int[] data,int[] temp,int l,int r){ C&ivjFf  
int mid=(l+r)/2; Zm@ O[:~  
if(l==r) return ; u!DSyHR '  
mergeSort(data,temp,l,mid); X*'-^WM6  
mergeSort(data,temp,mid+1,r); c=p@l<)  
for(int i=l;i<=r;i++){ W[3)B(Vq<E  
temp=data; kM\O2 ay  
} <ST#< $%  
int i1=l; k&P_ c  
int i2=mid+1; GX lFS#`  
for(int cur=l;cur<=r;cur++){ fE/8;v!=  
if(i1==mid+1) -j_J 1P0,  
data[cur]=temp[i2++]; :B'}#;8_  
else if(i2>r) :{tvAdMl7  
data[cur]=temp[i1++]; #YSUPO%F  
else if(temp[i1] data[cur]=temp[i1++]; V ;)q?ZHg  
else :22IY> p  
data[cur]=temp[i2++]; w{"GA ~=  
} ]-aeoa#  
} oa?eK  
$V)LGu2( m  
} [y T4n.f  
bMD'teJ  
改进后的归并排序: VQvl,'z  
>9g`9hB  
package org.rut.util.algorithm.support; 8D:{05  
5yQv(<~*G  
import org.rut.util.algorithm.SortUtil; ,&HZvU&  
0ZV)Y<DJ  
/** [@= [< _r  
* @author treeroot r\"O8\  
* @since 2006-2-2 <nj[=C4v  
* @version 1.0 v=|BqG`  
*/ k852M^JP  
public class ImprovedMergeSort implements SortUtil.Sort { soZw""|v  
QW f)5S  
private static final int THRESHOLD = 10; Rh%/xG#k  
t?]6>J_V  
/* %Ys>PzM  
* (non-Javadoc) #?i#q%q  
* 0 n,5"B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [j0I}+@4H  
*/ BifA&o%  
public void sort(int[] data) { oA~m*|  
int[] temp=new int[data.length]; %1]2+_6  
mergeSort(data,temp,0,data.length-1); <5(8LMF  
} .>?["e#,  
43-%")bH  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~]/X,Cf  
int i, j, k; Hk\+;'PrN  
int mid = (l + r) / 2;  #~.i\|VL  
if (l == r) H+3I[`v  
return; 5 ^iU1\(L  
if ((mid - l) >= THRESHOLD) B<[;rk  
mergeSort(data, temp, l, mid); xM;gF2  
else asW1GZO  
insertSort(data, l, mid - l + 1); FV$= l %  
if ((r - mid) > THRESHOLD) tb0XXE E  
mergeSort(data, temp, mid + 1, r); @6$r| :]G-  
else $#@4i4TN-  
insertSort(data, mid + 1, r - mid); 9MLvHrB;  
;?2vW8{p<  
for (i = l; i <= mid; i++) { AEnS_Q  
temp = data; Oyq<y~}  
} ;.W0Aa  
for (j = 1; j <= r - mid; j++) { {zUc*9  
temp[r - j + 1] = data[j + mid]; "\BP+AF  
} Whd4-pR8  
int a = temp[l]; }C7tlA8,7  
int b = temp[r]; ^l^_K)tw*  
for (i = l, j = r, k = l; k <= r; k++) { #s#z@F  
if (a < b) { G-3.-  
data[k] = temp[i++]; #K! Df%,<  
a = temp; L238l  
} else { ?GFxJ6!%I  
data[k] = temp[j--]; OqBw&zm  
b = temp[j]; hDlk! #*  
} R C (v#G  
} G>mgoN  
} [l#WS  
@LL&ggV?  
/** R[&lk~a{=  
* @param data 4!k={Pd  
* @param l fe37T@  
* @param i EkSTN  
*/ Lf0Hz")  
private void insertSort(int[] data, int start, int len) { y-n\;d>[(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }aNiO85  
} 38q@4U=aiw  
} DhZtiqL#_  
} -;P<Q`{I  
} N^ D/}n  
Xb^\{s?b  
堆排序: _f3A6ER`  
M2@q{RiS  
package org.rut.util.algorithm.support; b=|&0B$E  
|}M']Vz  
import org.rut.util.algorithm.SortUtil; J82{PfQ"  
~2H7_+.#  
/** Jl]]nO BQ/  
* @author treeroot kmc9P&  
* @since 2006-2-2 u=E?N:I~F  
* @version 1.0 '-i tn  
*/ =|U2 }U;  
public class HeapSort implements SortUtil.Sort{ 4G>|It  
=(n'#mV  
/* (non-Javadoc) ImV54h'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gr6ma*)y~t  
*/ [BQw$8 +n_  
public void sort(int[] data) { gs8L/veP  
MaxHeap h=new MaxHeap(); Ox~'w0c,f  
h.init(data); Tc88U8Gc  
for(int i=0;i h.remove(); _).'SU)>  
System.arraycopy(h.queue,1,data,0,data.length); W;N/Y3Lb  
} Q?a"uei[  
3,vH:L4  
private static class MaxHeap{ :):Y6)giBD  
Xl/G|jB9  
void init(int[] data){ L\Jl'r|  
this.queue=new int[data.length+1]; Vw{Ys6q  
for(int i=0;i queue[++size]=data; %C3cdy_c  
fixUp(size); xapkhIW2\  
} m|]^f;7z  
} D+SpSO7yg  
 Nr[Rp  
private int size=0; \OU+Kl<  
YjX=@  
private int[] queue; &16bZw  
MtYP3:  
public int get() { 5pok%g  
return queue[1]; *[SsvlFt  
} `5 6QX'?  
)2FO+_K?T  
public void remove() { tH'VV-!MZ  
SortUtil.swap(queue,1,size--); vR)7qX}  
fixDown(1); 6fV)8,F3  
} w//w$}v  
file://fixdown Y=rr6/k  
private void fixDown(int k) { b}4/4Z.  
int j; N/%#GfXx  
while ((j = k << 1) <= size) { (t]>=p%4g  
if (j < size %26amp;%26amp; queue[j] j++; qXI30Yo#d  
if (queue[k]>queue[j]) file://不用交换 *n*y!z  
break; r\ %O$zu  
SortUtil.swap(queue,j,k); vv0zUvmT  
k = j; t3GK{X  
} 1}BNG,n  
} 4jz]c"p-  
private void fixUp(int k) { yQA[X}  
while (k > 1) { epbp9[`  
int j = k >> 1; O5{XT]:  
if (queue[j]>queue[k]) u.[JYZ  
break; V1:3  
SortUtil.swap(queue,j,k); ]T51;j'48  
k = j; <kSaSW  
} h]Oplp4 \W  
} w3w*"M  
gr?pvf!I  
} "B}08C,?  
O0{  
} U]D.z}0  
K%}I}8M  
SortUtil: }}1/Ede{5  
=| !~0O  
package org.rut.util.algorithm; ~1'468  
U9 59=e  
import org.rut.util.algorithm.support.BubbleSort; ;iORfUjxrq  
import org.rut.util.algorithm.support.HeapSort; K D-_~uIF  
import org.rut.util.algorithm.support.ImprovedMergeSort; PbPP1G')  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]= NYvv>H  
import org.rut.util.algorithm.support.InsertSort; :'dc=C  
import org.rut.util.algorithm.support.MergeSort; 1Q J$yr  
import org.rut.util.algorithm.support.QuickSort; )A0&16<  
import org.rut.util.algorithm.support.SelectionSort;  7q:bBS  
import org.rut.util.algorithm.support.ShellSort; 0tqR wKL  
2A%T!9J3  
/** 9-Qtj49  
* @author treeroot x!~OK::o8  
* @since 2006-2-2 "J5Pwvs-  
* @version 1.0 GF!{SO4  
*/ GnOo+hB  
public class SortUtil { W`'|&7~  
public final static int INSERT = 1; V 3]p3  
public final static int BUBBLE = 2; WHZng QmY  
public final static int SELECTION = 3; ^.C X6%  
public final static int SHELL = 4; 'r n;|K  
public final static int QUICK = 5; "|'`'W  
public final static int IMPROVED_QUICK = 6; w)eQ'6Vu  
public final static int MERGE = 7; )t0b$<%  
public final static int IMPROVED_MERGE = 8; ptv 4v[gQ  
public final static int HEAP = 9; y+scJ+<  
E E|zY%  
public static void sort(int[] data) { ^R7zLHU;  
sort(data, IMPROVED_QUICK); H27Oq8  
} i 9tJHeSm  
private static String[] name={ wDhcHB  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 'h^DI`  
}; otSPi7|k  
dO4#BDn"=  
private static Sort[] impl=new Sort[]{ (1,#=e+  
new InsertSort(), I A`8ie+  
new BubbleSort(), c '+r[rSn1  
new SelectionSort(), ;]M67ma7C  
new ShellSort(), 'D"K`Vw  
new QuickSort(), R[9PFMn  
new ImprovedQuickSort(), 4D8yb|o  
new MergeSort(), OPY/XKyY,  
new ImprovedMergeSort(), ]2Fo.n  
new HeapSort() FFeRE{,  
};  "$Iw Q  
j'*p  
public static String toString(int algorithm){ x\hn;i<  
return name[algorithm-1]; !J=;Z9  
} WQLL[{mhS  
TJ[jZuT:  
public static void sort(int[] data, int algorithm) { gZEA;N:H%<  
impl[algorithm-1].sort(data); DVoV:pk  
} q&$0i   
P>T*:!s;  
public static interface Sort { A%*DQ1N  
public void sort(int[] data); wt.{Fqm  
} M}oj!xGB  
c^Gwri4  
public static void swap(int[] data, int i, int j) { , q@(L  
int temp = data; ms\/=96F  
data = data[j]; ar qLp|  
data[j] = temp; y[WYH5 &DJ  
} D ,ZNh1xt  
} #8f"}>U9.,  
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