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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。 -u!FOD/  
插入排序: >>i@r@  
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package org.rut.util.algorithm.support; k67a'pmyJ  
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import org.rut.util.algorithm.SortUtil; jw}}^3.  
/** l1U=f]  
* @author treeroot JO<wK  
* @since 2006-2-2 "P-lSF?T  
* @version 1.0 @H>@[+S#  
*/ K_?W\Yg   
public class InsertSort implements SortUtil.Sort{ klgy;jSEr  
me6OPc;:!  
/* (non-Javadoc) cRd0S*QN2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G$0c '9d*(  
*/ 'J&f%kx"  
public void sort(int[] data) { v[plT2"s  
int temp; mGUO6>g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OA/WtQ5  
} cKb)VG^  
} $D v\ e  
} r_e7a6  
=0;}K@(J  
} 4'4\ ,o  
gBh;=vOD  
冒泡排序: I+>%uShm  
$N :Vo(*  
package org.rut.util.algorithm.support; "<_0A f]  
9Y>8=#.c  
import org.rut.util.algorithm.SortUtil; kF;D BN  
HHX-1+L  
/** r:&` $8$  
* @author treeroot 53-v|'9'  
* @since 2006-2-2 fFj grK8  
* @version 1.0 1&;QyTN  
*/ -[U1]R  
public class BubbleSort implements SortUtil.Sort{ {~|OE -X][  
Ev7J+TmXM  
/* (non-Javadoc) PHA-9\jC{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o9xlu.QL{c  
*/ 2aJS{[  
public void sort(int[] data) { p~noM/*2r  
int temp; uZfnzd)c  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +dA,P\  
if(data[j] SortUtil.swap(data,j,j-1); &B! o,qp  
} F:y[@Yn  
} F":r4`5D"K  
} `qd+f{Q  
} ? (*t@ {k  
E*L iM5+I  
} "&+"@ <  
R4ht6Vm3g)  
选择排序: n,$IfC"  
[=B$5%A  
package org.rut.util.algorithm.support; V $z} K  
=@k%&* Y?  
import org.rut.util.algorithm.SortUtil; mUS_(0q  
OHiQ7#y  
/** w =. Fj  
* @author treeroot [mEql,x3  
* @since 2006-2-2 x(<(t: ?o  
* @version 1.0 %IC73?  
*/ =+ t^f  
public class SelectionSort implements SortUtil.Sort { s"Pf+aTW  
n,B,"\fw  
/* >^XBa*4;Y  
* (non-Javadoc) P/EM :  
* J|'7_0OAx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ut$;ND.-  
*/ L\y;LSTU  
public void sort(int[] data) { 6c^e\0q  
int temp; asY[8r?U  
for (int i = 0; i < data.length; i++) { \(t@1]&jw  
int lowIndex = i; u7?$b!hG^C  
for (int j = data.length - 1; j > i; j--) { rQ7+q;[J  
if (data[j] < data[lowIndex]) { P!"&%d  
lowIndex = j; 6mKjau{r_  
} )_/5*Ly@  
} v3v[[96p  
SortUtil.swap(data,i,lowIndex); uV 7BK+[O  
} GnP|x}YM  
} @+atBmt  
J|&JD?  
} rvr-XGK36\  
R+&jD;U{  
Shell排序: !Hys3AP  
x\Z'2?u}  
package org.rut.util.algorithm.support; 5) -~mW y  
2tal  
import org.rut.util.algorithm.SortUtil; ^pJ!isuqu  
`7/Y@}n  
/** 5|jw^s7  
* @author treeroot 35tu>^_#V  
* @since 2006-2-2 a{{g<< H  
* @version 1.0 keB&Bjd&  
*/ UQB "v3Z  
public class ShellSort implements SortUtil.Sort{ a33TPoj  
_/wV;h~R  
/* (non-Javadoc) < yC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u|4$+ QiD  
*/ SPp#f~%m  
public void sort(int[] data) { r\AyN= y  
for(int i=data.length/2;i>2;i/=2){ u]vQ>Uu  
for(int j=0;j insertSort(data,j,i); 765p/**  
} -?(E_^ng  
} r#xg#uoj  
insertSort(data,0,1); )Tk1 QHU  
} 6;|n]m\Vd  
]O]GeAGC2  
/** ;vt8R=T  
* @param data M`ip~7"  
* @param j Yv:55+e!|  
* @param i y#XbJuN/  
*/ ~#kT _*sw)  
private void insertSort(int[] data, int start, int inc) { _x!7}O#k  
int temp;  A^p[52`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |g=="  
} qL,tYJ<m%  
} wC5ee:u C%  
} b$Vz2Fzx  
/% N r?V  
} EY \H=@A  
;\p KDPr  
快速排序: H"qOSf{  
1 5A*7|  
package org.rut.util.algorithm.support; _1U1(^)  
8=]Tr3   
import org.rut.util.algorithm.SortUtil; R58-wUto  
Y+Fljr*  
/** ;pnD0bH  
* @author treeroot ij?  
* @since 2006-2-2 IEU^#=n  
* @version 1.0 PG,_^QGCX  
*/ A]XZnQ  
public class QuickSort implements SortUtil.Sort{ qG<$Ajiin  
&gjF4~W]  
/* (non-Javadoc) qbv#I;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q `pP$i:  
*/ |^A;&//  
public void sort(int[] data) { .jj$Kh q]  
quickSort(data,0,data.length-1); QR>gt;  
} U*3uq7  
private void quickSort(int[] data,int i,int j){ 6H'HxB4  
int pivotIndex=(i+j)/2; / z}~zO  
file://swap Q:5KZm[[  
SortUtil.swap(data,pivotIndex,j); VO"("7L  
Ntbg`LGf'!  
int k=partition(data,i-1,j,data[j]); -=(!g&0  
SortUtil.swap(data,k,j); vBog0KD);s  
if((k-i)>1) quickSort(data,i,k-1); s M+WkN}{  
if((j-k)>1) quickSort(data,k+1,j); e6!LSx}y  
tzs</2 G,  
} yV"ZRrjO'Z  
/** G_SG  
* @param data s&NX@  
* @param i {uHU]6d3qy  
* @param j v$N|"o""  
* @return @WI2hHD  
*/ &9Xhl''  
private int partition(int[] data, int l, int r,int pivot) { Mb]rY>B4  
do{ ahPoEh  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;6!Pwb;hY  
SortUtil.swap(data,l,r); c_V;DcZ  
} :hM/f  
while(l SortUtil.swap(data,l,r); G>q(iF'  
return l; Ud!4"<C_  
} 7[.6axL  
SI=yI-  
} P><o,s"v  
+-G<c6 |  
改进后的快速排序: wR^R M(1  
-e8}Pm "  
package org.rut.util.algorithm.support; Hbpqyl%O>  
/"B?1?qc,=  
import org.rut.util.algorithm.SortUtil; DoeiW=  
0fYj4`4=n  
/** W>O~-2  
* @author treeroot 39=1f6I1  
* @since 2006-2-2 :duo#w"K  
* @version 1.0 =dFv/F/RW  
*/ W]nSR RWco  
public class ImprovedQuickSort implements SortUtil.Sort { |<GDUwC_;  
$ mI0Bk  
private static int MAX_STACK_SIZE=4096; vPD] hs  
private static int THRESHOLD=10; |M+<m">E  
/* (non-Javadoc) rs~wv('  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ObiT-D?)g  
*/ g]c6& Y,#  
public void sort(int[] data) { {\(L%\sV@  
int[] stack=new int[MAX_STACK_SIZE]; ]GRWnif  
3.qTLga|}  
int top=-1; d,=r 9.  
int pivot; q5#J~n8Wr  
int pivotIndex,l,r; y>aZXa  
.<Zy|1 4  
stack[++top]=0; c.j$9=XLBG  
stack[++top]=data.length-1; ,JEF GI{  
p8]68!=W\F  
while(top>0){ >>5NX"{  
int j=stack[top--]; V,G|k!!  
int i=stack[top--]; ]X^rU`":  
s%W<dDINl  
pivotIndex=(i+j)/2; sx`O8t  
pivot=data[pivotIndex]; QV&D l_  
67VT\f  
SortUtil.swap(data,pivotIndex,j); di>cMS 4 c  
L*~J%7  
file://partition 19j+lCSvH  
l=i-1; 1+U  
r=j; 2^l[(N  
do{ =hMY2D  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~>+]%FPv  
SortUtil.swap(data,l,r); u6bXv(  
} o!!yd8~*r  
while(l SortUtil.swap(data,l,r); 0eS)&GdR  
SortUtil.swap(data,l,j); pb=cBZ$  
7__Q1 > o  
if((l-i)>THRESHOLD){ $]A/ o(  
stack[++top]=i; uECsh2Uin  
stack[++top]=l-1; Gqy,u3lE  
} F  3'9u#  
if((j-l)>THRESHOLD){ N+y&,N,  
stack[++top]=l+1; nVI! @qW  
stack[++top]=j; E,f>1meN=  
} p^'3Odd|O  
PgRDKygE  
} }sOwp}FV8X  
file://new InsertSort().sort(data); <,>P0tY}  
insertSort(data); H(&4[%;MP  
} T9879[ZU\  
/** >G~R,{6U  
* @param data >z.<u|r2  
*/ Ix(><#P  
private void insertSort(int[] data) { |USX[j m\  
int temp; 1 %,a =,v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b/Xbs0q  
} ME=/|.}D<  
} Vl2XDkhq  
} )u qA(R>  
F<(i.o(  
} Z%x\~ )~  
@`,1:  
归并排序: -%I2[)F<  
B0ndcB-  
package org.rut.util.algorithm.support; QQV~?iW{~  
J:kmqk!  
import org.rut.util.algorithm.SortUtil; "|HDGA5  
Vb'7>  
/** Bdu&V*0g  
* @author treeroot MG{YrX)oi  
* @since 2006-2-2 &zuG81F6  
* @version 1.0 $e /^u[~:  
*/ 5=1^T@~#&  
public class MergeSort implements SortUtil.Sort{ 5T:i9h  
bHI<B)=`  
/* (non-Javadoc) +|ycvHd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) edK|NOOZ  
*/ Q pmsOp|  
public void sort(int[] data) { e A}%C.ZR  
int[] temp=new int[data.length]; -Fn  }4M  
mergeSort(data,temp,0,data.length-1); 2~t[RY  
} p}<w#p |  
m{7(PHpw  
private void mergeSort(int[] data,int[] temp,int l,int r){ vC5n[0  
int mid=(l+r)/2; EMc;^ d  
if(l==r) return ; s|NjT  
mergeSort(data,temp,l,mid); m-jHze`D3  
mergeSort(data,temp,mid+1,r); k{<,\J  
for(int i=l;i<=r;i++){ c-Pw]Ju  
temp=data; =2 *rA'im  
} 0pSmj2/,.  
int i1=l; yZWoN&  
int i2=mid+1; >B>CB3U  
for(int cur=l;cur<=r;cur++){ {iq3|x2[:  
if(i1==mid+1) OGY"<YH6  
data[cur]=temp[i2++]; Y OJ6 w  
else if(i2>r) E(i[o?  
data[cur]=temp[i1++]; SM^-Z|d?  
else if(temp[i1] data[cur]=temp[i1++]; f +hjC  
else DU=dLE6-P;  
data[cur]=temp[i2++]; _fwb!T}$  
} ~%2pp~1 K  
} LE%7DW(  
sQ 8s7l0D  
} L-9~uM3@\  
/By)"  
改进后的归并排序: & V)6!,rb  
J=dJs k   
package org.rut.util.algorithm.support; -!8(bjlJ&  
Z,.G%"i3C  
import org.rut.util.algorithm.SortUtil; ${8?N:>t  
P(a.iu5   
/** Y+3!f#exm  
* @author treeroot sk|=% }y  
* @since 2006-2-2 |0,vQv  
* @version 1.0 dCFlM&(i  
*/ GTJ{h  
public class ImprovedMergeSort implements SortUtil.Sort { c   c  
=-o'gL  
private static final int THRESHOLD = 10; Ea( ,aVlj  
~RD+.A  
/* aSP4a+\*  
* (non-Javadoc) uZi.HG{<)  
* ;2m<CSv!D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :ah 5`nmPO  
*/ [Ym   
public void sort(int[] data) { Rl6\#C*  
int[] temp=new int[data.length]; Vj!rT <@  
mergeSort(data,temp,0,data.length-1); wP/A^Rs  
} Eaqca{%/^  
9Ok9bC'?8@  
private void mergeSort(int[] data, int[] temp, int l, int r) { J4YBqp  
int i, j, k; :ZDMNhUl &  
int mid = (l + r) / 2; ph2$oO 6,  
if (l == r) Oi} T2I  
return; &Sp -w?kM  
if ((mid - l) >= THRESHOLD) nP UqMn'  
mergeSort(data, temp, l, mid); k'X;ruQ:tF  
else  >Ng)k]G  
insertSort(data, l, mid - l + 1); dz[ bm< T7  
if ((r - mid) > THRESHOLD) 1w"8~Z:UXV  
mergeSort(data, temp, mid + 1, r);  LZ~"VV^  
else $M:3XAN  
insertSort(data, mid + 1, r - mid); Em7 WDu0  
J# kl 7  
for (i = l; i <= mid; i++) { n& $^04+i  
temp = data; !JBae2Z  
} {5|("0[F  
for (j = 1; j <= r - mid; j++) { |([R'Orm  
temp[r - j + 1] = data[j + mid]; /1`cRyS  
} }!TL2er_  
int a = temp[l]; Bg8#qv  
int b = temp[r]; z 5]bia,  
for (i = l, j = r, k = l; k <= r; k++) { *{o UWt  
if (a < b) { =?X$Yaw*  
data[k] = temp[i++]; ` rm?a0  
a = temp; 90xk$3(  
} else { BN,>&1I  
data[k] = temp[j--]; lHB) b}7E  
b = temp[j]; [ REf>_R  
} C}5M;|%3)  
} jtm?z c  
} ]8;n{ }X  
 d^|0R  
/** >`jU`bR@  
* @param data H UWxPIu  
* @param l .C]cK%OO N  
* @param i 3^=+gsc  
*/ jKIc09H|  
private void insertSort(int[] data, int start, int len) { 5HS~op2n/  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); q*)+K9LRk  
} rbqo"g`  
} Wn|&cG9  
} N]YtLa,t  
} Jg$xO@.  
q|)Q9+6$+  
堆排序: ]+H ?@*b`  
#hw/^AaD-  
package org.rut.util.algorithm.support; rgcWRt  
W0cgI9=9  
import org.rut.util.algorithm.SortUtil; e1q"AOV6  
R \s!*)  
/** nF)uTk  
* @author treeroot [XlB<P=|>  
* @since 2006-2-2 "'Z- UV  
* @version 1.0 [*m2  
*/ 4QJ8Z t  
public class HeapSort implements SortUtil.Sort{ ] q~<=   
P|jF6?C  
/* (non-Javadoc) SJgY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dmdy=&G  
*/ 8n?kZY$,  
public void sort(int[] data) { 9j|gdfb%ml  
MaxHeap h=new MaxHeap(); %zo= K}u  
h.init(data); l+y-Fo@  
for(int i=0;i h.remove(); 34|a:5c  
System.arraycopy(h.queue,1,data,0,data.length); AN9[G  
} 5c -N0@\  
(S^ck%]]a!  
private static class MaxHeap{ EqM;LgE=  
F:37MUQi  
void init(int[] data){ +K6szGP  
this.queue=new int[data.length+1]; #NRh\Wj|  
for(int i=0;i queue[++size]=data; dX )W0  
fixUp(size); /2NSZO  
} s.jO<{  
} ,7d|O}B  
o`r(`6@  
private int size=0; YT yX`Y#  
+iF 1sC_  
private int[] queue; #^mqQRpgq  
^~ L}<]  
public int get() { ?Hy+'sq[  
return queue[1]; rlznwfr7+  
} QYThW7S  
~S(^T9R  
public void remove() { mgkyC5)d  
SortUtil.swap(queue,1,size--); pvXcLR)L+3  
fixDown(1); ^i_Iqph=  
} {8NwFN.  
file://fixdown eXy"^x p^  
private void fixDown(int k) { XrN- 2HTV  
int j; B/eaqJ  
while ((j = k << 1) <= size) { _|,{ ^m|d  
if (j < size %26amp;%26amp; queue[j] j++; =K$,E4*  
if (queue[k]>queue[j]) file://不用交换 SQ#7PKH  
break; +2T! z=  
SortUtil.swap(queue,j,k); WtX>Qu|  
k = j; oO=o|w|T  
} 7!2 HNg  
} t<b3K-  
private void fixUp(int k) { ?~2Bi^W5  
while (k > 1) { !0fI"3P@r  
int j = k >> 1; x,Y 5U+]E  
if (queue[j]>queue[k]) |pWaBh|r  
break; # .q#O C  
SortUtil.swap(queue,j,k); u.6P-yh  
k = j; u3ds QU  
} .2X2b<%)  
} Gq]d:-7l  
]h~o],:  
} D[>W{g $  
^9ng)  
} 2@MN]Low  
Jgi Iq  
SortUtil: (@ ]tG?I=  
H=. K  
package org.rut.util.algorithm; Hq xK\m%,.  
 *W^=XbG  
import org.rut.util.algorithm.support.BubbleSort; 8B@J Fpg^  
import org.rut.util.algorithm.support.HeapSort; #/WAzYt{  
import org.rut.util.algorithm.support.ImprovedMergeSort; A8dI:E+$  
import org.rut.util.algorithm.support.ImprovedQuickSort; 8wF#e\Va0  
import org.rut.util.algorithm.support.InsertSort; &=-PRza%j  
import org.rut.util.algorithm.support.MergeSort; x N`T  
import org.rut.util.algorithm.support.QuickSort; $A?}a  
import org.rut.util.algorithm.support.SelectionSort; En5!"w|j  
import org.rut.util.algorithm.support.ShellSort; KU2$5[~j  
fI11dE9&?[  
/** R [9w  
* @author treeroot Kpg:yrc['  
* @since 2006-2-2 "T*I|  
* @version 1.0 aIu2>  
*/ R=35 7^[R  
public class SortUtil { .3g&9WvN!Z  
public final static int INSERT = 1; /J;]u3e|  
public final static int BUBBLE = 2; v>at/ef  
public final static int SELECTION = 3; ; J2-rh  
public final static int SHELL = 4; pbdF]>\  
public final static int QUICK = 5; 6_ ]8\n  
public final static int IMPROVED_QUICK = 6; (9z|a ,  
public final static int MERGE = 7; sV'v* 1|  
public final static int IMPROVED_MERGE = 8; <bX 1,}?  
public final static int HEAP = 9; lJj&kVHb  
>a9l>9fyY  
public static void sort(int[] data) { R HXvee55  
sort(data, IMPROVED_QUICK); yjeL9:jH[  
} b_ JWnh  
private static String[] name={ ;fx1!:;.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" YZ*{^'  
}; lWlUWhLnP  
ZvyjMLf  
private static Sort[] impl=new Sort[]{ acP ;(t  
new InsertSort(), uWrFunh%  
new BubbleSort(), uTw|Q{f  
new SelectionSort(), CK Mv7  
new ShellSort(), tGqQJT#mr7  
new QuickSort(), .~22^k  
new ImprovedQuickSort(), )rbc;{.  
new MergeSort(), fMzYFM'i  
new ImprovedMergeSort(), TnxU/)  
new HeapSort() 2 mq%|VG'  
}; r?afv.@L2  
(NM6micc  
public static String toString(int algorithm){ 1:YAn  
return name[algorithm-1]; xBt<Yt"  
} +/}_%Cf8  
(L:`o jiU  
public static void sort(int[] data, int algorithm) { &]*|6cR$E  
impl[algorithm-1].sort(data); ?KCxrzf  
} >&[3  
[[&)cbv  
public static interface Sort { o6/Rx#A  
public void sort(int[] data); pr)K{~m]{<  
} 9kUV1?  
w2@"PGR  
public static void swap(int[] data, int i, int j) { UMv"7~  
int temp = data; /Q]:Uf.J  
data = data[j]; KKV)DExv?  
data[j] = temp; SUo^c1)G  
} OAY8,C=M  
} ~X[S<Gi#  
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