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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。 :o l6%Z's  
插入排序: N33AcV!*8  
6?!I  
package org.rut.util.algorithm.support; X(b1/lzA  
R=Ymo.zs6  
import org.rut.util.algorithm.SortUtil; x5PPu/  
/** /6jGt'^U  
* @author treeroot wibwyzo  
* @since 2006-2-2 &N9IcNP  
* @version 1.0 QXB|!'  
*/ "qgu$N4/>  
public class InsertSort implements SortUtil.Sort{ {NV:|M!  
\ =Nm5:  
/* (non-Javadoc) &D)2KD"N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0# l#,Y6#I  
*/ J[6VBM.Y  
public void sort(int[] data) { Ju4.@  
int temp; hk.yR1Y|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Oa1'oYIHg  
} eK *W =c#@  
} kXMP=j8  
} B5 &YL  
Br&^09S  
} gg(k7e  
(FG^UA#'  
冒泡排序: :Dj#VN  
5pmQp}}R  
package org.rut.util.algorithm.support; o~k;D{Snr  
!pl_Ao~(  
import org.rut.util.algorithm.SortUtil; Rhv%6ekI  
C rfRLsN]  
/** .8x@IWJD  
* @author treeroot D!/0c]"  
* @since 2006-2-2 #EFMgQO  
* @version 1.0 *7_@7=W,  
*/ ez+yP,.#  
public class BubbleSort implements SortUtil.Sort{ $N dH*  
R|-j]Ne  
/* (non-Javadoc) V pH|R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *k4+ioFnKE  
*/ EZ `}*Yrd  
public void sort(int[] data) { WDvV LU`  
int temp; D Kq-C%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %b9fW  
if(data[j] SortUtil.swap(data,j,j-1); &8afl"_~  
} s_v }=C^  
} @ 'Q%Jc(  
} RJLFj  
} A-;^~I  
9GE]<v,_[  
} d9|T=R  
ve~C`2=;  
选择排序: P|8e%P  
/0l-mfRr  
package org.rut.util.algorithm.support; ^H-QYuz:T0  
W}?s^  
import org.rut.util.algorithm.SortUtil; 2$3kKY6$e  
^^eV4Y5`+  
/** jQkUNPHu  
* @author treeroot }I)z7l.  
* @since 2006-2-2  -?Ejbko  
* @version 1.0 , uO?;!t  
*/ LjCykk  
public class SelectionSort implements SortUtil.Sort { g&XhQ.aa  
[*t U}9  
/* ,.h$&QFj;  
* (non-Javadoc) g/6nw a  
* TRo4I{L6S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [m %W:Ez  
*/ Nv{eE<<6  
public void sort(int[] data) { Xa)7`bp<  
int temp; {)@ j77P  
for (int i = 0; i < data.length; i++) { L/5z!  
int lowIndex = i; %~G0[fG  
for (int j = data.length - 1; j > i; j--) { \"t`W:  
if (data[j] < data[lowIndex]) { wCC-Y kA  
lowIndex = j; 7Y)s#FJ  
} y6\ [1nZ  
} P$Ax c/H  
SortUtil.swap(data,i,lowIndex); FJW`$5?  
} \k4M{h6  
} tfsh!)u?  
dbg|V oNf  
} tgc@7  
GgT=t)}wu  
Shell排序: }~V,_Fv  
Xa>}4j.  
package org.rut.util.algorithm.support; |fx#KNPf]  
|KTpK(6p  
import org.rut.util.algorithm.SortUtil; nwhm[AaNs  
FRc  |D  
/** 8dlInms  
* @author treeroot aK!xRnY  
* @since 2006-2-2 qq/_yt  
* @version 1.0 `9:v*KuM#R  
*/ xTGP  
public class ShellSort implements SortUtil.Sort{ [q w  
b5[f 5  
/* (non-Javadoc) HuK Aj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K7+^Yv\YQx  
*/ 9*f2b.Aj  
public void sort(int[] data) { t ]71  
for(int i=data.length/2;i>2;i/=2){ [9w, WJL  
for(int j=0;j insertSort(data,j,i); jt/l,=9YK  
} j\nE8WH  
}  Pb*q;9  
insertSort(data,0,1); V2lp7"  
} UP5%C;  
9&&kgKKGQ  
/** m)(SG  
* @param data W6)dUi :"  
* @param j C5BzWgK  
* @param i G#^m<G^M  
*/ an pJAB:1  
private void insertSort(int[] data, int start, int inc) { _T_PX$B  
int temp; )H.ubM1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); EUJ1RhajF  
} .QNjeMu.  
} }k4`  
} ,>:XE@xcp  
(/To?`  
} t*eleNYeS~  
O7! fI'R  
快速排序: =%:JjgKc*t  
e=0l<Rj  
package org.rut.util.algorithm.support; :v|r=#OI  
](]*]a4ss  
import org.rut.util.algorithm.SortUtil; $:xF)E  
u XaL  
/** uPM8GIvZX.  
* @author treeroot {hlT` K  
* @since 2006-2-2 ~+7ad$   
* @version 1.0 FZM ]o  
*/ ?3.(Vqwog  
public class QuickSort implements SortUtil.Sort{ ^A:!ni@3  
*2w_oKE'+5  
/* (non-Javadoc) eUzU]6h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &C CHxjsKR  
*/ %ZJ),9+  
public void sort(int[] data) { p_D on3  
quickSort(data,0,data.length-1); Y8x(#qp,  
} hWl""66+5  
private void quickSort(int[] data,int i,int j){ $71i+h]_  
int pivotIndex=(i+j)/2; zpBBnlq  
file://swap !"Z."fm*  
SortUtil.swap(data,pivotIndex,j); MoC*tImWR  
> u'/$ k  
int k=partition(data,i-1,j,data[j]); > #Grf)@"6  
SortUtil.swap(data,k,j); azz#@f1  
if((k-i)>1) quickSort(data,i,k-1); 5<'n  
if((j-k)>1) quickSort(data,k+1,j); 4SX3c:>  
MR^umLM88  
} Dx p>  
/** ,%"\\#3S  
* @param data ?,A}E|jZ  
* @param i HV#?6,U}  
* @param j Ek gZxT_&  
* @return G2U5[\  
*/ (cPeee%Q  
private int partition(int[] data, int l, int r,int pivot) { Hsd|ka$x>  
do{ *l-Dh:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U*`  
SortUtil.swap(data,l,r); +An![1N,  
} ?NL&x  
while(l SortUtil.swap(data,l,r); I;bg?RsF  
return l; X_^_r{  
} <lg"M;&Ht  
luP'JUq  
} )]0[`iLe  
~@)- qV^~  
改进后的快速排序: Vz=j )[  
n $D}0wSM/  
package org.rut.util.algorithm.support; XL"v21X  
Bd N{[2  
import org.rut.util.algorithm.SortUtil; sWojQ-8}  
4iL.4Uj{N  
/** ~T;a jvJ  
* @author treeroot ^`hI00u(  
* @since 2006-2-2 Ba\wq:  
* @version 1.0 h4$OXKme?  
*/ pw(U< )  
public class ImprovedQuickSort implements SortUtil.Sort { \'}/&PCkr  
j L>I5f  
private static int MAX_STACK_SIZE=4096; h&:Q$*A>   
private static int THRESHOLD=10; sqMNon`5  
/* (non-Javadoc) $_ I%1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FrAqTz  
*/ .MzP}8^  
public void sort(int[] data) { #%} u8\q  
int[] stack=new int[MAX_STACK_SIZE]; p;c_<>ws-Y  
IV 3@6t4k  
int top=-1; w|hyU4- ^  
int pivot; r(?'Yy  
int pivotIndex,l,r; 0k] ju  
h M1&A  
stack[++top]=0; qxecp2>U  
stack[++top]=data.length-1; /64^5DjTh  
toYg$IV  
while(top>0){ %BKR}  
int j=stack[top--]; Z<,CzKs+||  
int i=stack[top--]; ;/hH=IT  
EP*["fx  
pivotIndex=(i+j)/2; tnKpn-LPA  
pivot=data[pivotIndex]; TS~Y\Cp  
cfy/*|  
SortUtil.swap(data,pivotIndex,j); Xdp`Z'g  
]Gi+Z1q  
file://partition E&T'U2  
l=i-1; ;#6<bV  
r=j; 6\S$I5  
do{ U#~nN+SIt  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ilt L@]e  
SortUtil.swap(data,l,r); .T62aJ   
} c}I8!*\  
while(l SortUtil.swap(data,l,r); Wj f>:\ w  
SortUtil.swap(data,l,j); 4Q`=t &u  
k_|v)\4B  
if((l-i)>THRESHOLD){ 9 FFfRIVY  
stack[++top]=i; F~d7;x =g  
stack[++top]=l-1; 2A18hP`^  
} LK-K_!F  
if((j-l)>THRESHOLD){ /Mi-lh^j-  
stack[++top]=l+1; 9B?t3:  
stack[++top]=j; sgb+@&}9n  
} I W] 841  
~gLEhtW  
} w'zO(6 `  
file://new InsertSort().sort(data); Fh!!T%5>C  
insertSort(data); u`H@Q&(^wa  
} {eD>E(Y@z1  
/** O( 5L2G  
* @param data  <*6y`X  
*/ ]`i@~Z h\  
private void insertSort(int[] data) { 2'UFHiK  
int temp; n\8[G [M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n[cyK$"  
} #&`WMLl+8  
} &Ow?Hd0  
} ^1FZ`2u;  
;P0Y6v3  
} ? /|@ #&  
Zy+QA>d|  
归并排序: g]PLW3  
fE7a]R EK  
package org.rut.util.algorithm.support; Rcx'a:k  
HTtGpTsF  
import org.rut.util.algorithm.SortUtil; v BeU  
C$re$9U  
/** yM#trqv5  
* @author treeroot 5, "^"*@<  
* @since 2006-2-2 -z~ V   
* @version 1.0 3PR7g  
*/ tx&U"]  
public class MergeSort implements SortUtil.Sort{ ` S~@FX  
j}?ZsnqV  
/* (non-Javadoc) .X=M !  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B+q+)O+  
*/ n+F-,=0  
public void sort(int[] data) { (+Nmio  
int[] temp=new int[data.length]; 8IIdNd  
mergeSort(data,temp,0,data.length-1); 4Uy>#IL  
} $j4?'-i=e  
Kg0\Pvg8?T  
private void mergeSort(int[] data,int[] temp,int l,int r){ [m+O0VK$  
int mid=(l+r)/2; ]v,y(yl  
if(l==r) return ; ]!Aze^7;  
mergeSort(data,temp,l,mid); ~JmxW;|_x)  
mergeSort(data,temp,mid+1,r); \g6 # MNW  
for(int i=l;i<=r;i++){ o)' =D(  
temp=data; Vx4pP$S  
} 0&L0j$&h  
int i1=l; !CMVZf;u  
int i2=mid+1; #uw*8&%0  
for(int cur=l;cur<=r;cur++){ o-i.'L)X  
if(i1==mid+1) %?G.lej,x  
data[cur]=temp[i2++]; s8I77._s  
else if(i2>r) YrcC"  
data[cur]=temp[i1++]; =z /mI y<  
else if(temp[i1] data[cur]=temp[i1++]; c$SxDYG  
else ~x^+OXf!^g  
data[cur]=temp[i2++]; T9;o.f S  
} E|A_|FS&%  
} }m lbN0v  
"BNmpP  
} >_% g8T'  
P9cI{RI  
改进后的归并排序: z^GGJu%vjr  
{Ll8@'5  
package org.rut.util.algorithm.support; laL4ez  
*x` l1o  
import org.rut.util.algorithm.SortUtil; C5z  
m?CjYqvf  
/** $MEbePxe  
* @author treeroot {]m e?I  
* @since 2006-2-2 -a^sX%|Bl  
* @version 1.0 ez9M]! 8Lt  
*/ fq!6#Usf;i  
public class ImprovedMergeSort implements SortUtil.Sort { vlKKPS  
Z5^ UF2`Q  
private static final int THRESHOLD = 10; |2]WA'q  
WaK{/6?T,  
/* }Ml z\'{  
* (non-Javadoc)  ]mU*Y:<  
* L=Jk"qWV0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YG+ Yb{^"  
*/ G uI sM  
public void sort(int[] data) { /OtQk -E  
int[] temp=new int[data.length]; iQj{J1V  
mergeSort(data,temp,0,data.length-1); E|}Nj}(*  
} rG%_O$_dO  
SmEd'YD!J  
private void mergeSort(int[] data, int[] temp, int l, int r) { Z]+Xh  
int i, j, k; VrL>0d&d  
int mid = (l + r) / 2; ^[NmNi*  
if (l == r) "_}D{ws1  
return; WC&Ltw8  
if ((mid - l) >= THRESHOLD) ,<WykeC  
mergeSort(data, temp, l, mid); g}j>;T  
else DL Q`<aU  
insertSort(data, l, mid - l + 1); I8>1RXz  
if ((r - mid) > THRESHOLD) [5:7 WqB  
mergeSort(data, temp, mid + 1, r); /9# jv]C:  
else I:7,CV  
insertSort(data, mid + 1, r - mid);  -~aEqj#?  
juZ3""  
for (i = l; i <= mid; i++) { _NN{Wk/3w  
temp = data; P@![P Ij  
} ~ a&j4E  
for (j = 1; j <= r - mid; j++) { bg. KkJMrR  
temp[r - j + 1] = data[j + mid]; {v'Fg  
} }u)G ERWO  
int a = temp[l]; *\+ 'tFT6  
int b = temp[r]; ;lt;]7  
for (i = l, j = r, k = l; k <= r; k++) { j[eEyCW[)  
if (a < b) { b,A1(_pzi  
data[k] = temp[i++]; 5Rp2O4Z  
a = temp; ?uBC{KQ}Y  
} else { /Bu5k BC  
data[k] = temp[j--]; d> AmM!J  
b = temp[j]; iR=aYT~  
} ~ZC=!|Q#  
} N4NH)x  
} 6Ky"4\e  
W5;sps  
/** LA Vgf>  
* @param data {vlh ,0~  
* @param l Oz7v hOU  
* @param i _n gMC]-T  
*/ nuA!Jln_  
private void insertSort(int[] data, int start, int len) { J#WPXE+Ds  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,i.P= o  
} 5!%/j,?  
} #8|NZ6x,  
} 0g)mf6}o  
} Q;M\P/f  
A*i_- ;W)  
堆排序: /LzNr0>2  
b)@x@3"O  
package org.rut.util.algorithm.support; I@+<[n2  
Or|LyQU  
import org.rut.util.algorithm.SortUtil; 9hzU@m  
(*gpa:Sc  
/** &6EfybAt^_  
* @author treeroot =@MKU  
* @since 2006-2-2 ? xs0J  
* @version 1.0 !*-cf$  
*/ ~h.B\Sc]Q  
public class HeapSort implements SortUtil.Sort{ bhYaG i0  
y~[So ,G  
/* (non-Javadoc) _m-r}9au   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u] b6>  
*/ ;_ton?bF  
public void sort(int[] data) { _v,n~a}&  
MaxHeap h=new MaxHeap(); g5[3[Z(.  
h.init(data); uuB\~ #?T  
for(int i=0;i h.remove(); \I]'6N=  
System.arraycopy(h.queue,1,data,0,data.length); p}uw-$O  
} K-5)Y+| >  
UW3F)  
private static class MaxHeap{ >?KyPp  
KS_d5NvYl  
void init(int[] data){ Q0-~&e_'  
this.queue=new int[data.length+1]; w6 .HvH-@?  
for(int i=0;i queue[++size]=data; `r V,<  
fixUp(size); |<$O5b'  
} yhmW-#+^e  
} 'r CR8>k  
f*Bc`+G  
private int size=0; w@We,FUJN  
j!dklQh0  
private int[] queue; \ZH=$c*W  
,s K-gw  
public int get() { }S4Fy3)  
return queue[1]; {HeMdGn9  
} kOO2 ?L|Z  
"'L SLp  
public void remove() { zx*f*L,6F  
SortUtil.swap(queue,1,size--); ?1sY S  
fixDown(1); x1h!_^(QfF  
} =JkSq J)?  
file://fixdown T /uu='3  
private void fixDown(int k) { i%2K%5{)$D  
int j; |zE7W  
while ((j = k << 1) <= size) { Pmb`05\  
if (j < size %26amp;%26amp; queue[j] j++; S"l&=J2dc  
if (queue[k]>queue[j]) file://不用交换 iatQHn >(  
break; JI(|sAH  
SortUtil.swap(queue,j,k); ,*30Q  
k = j; H2}i .  
} f?QD##~;  
} !Fi)-o  
private void fixUp(int k) { {Bx\Z0+'&  
while (k > 1) { HZNX1aQ|Q#  
int j = k >> 1; v:'y&yS  
if (queue[j]>queue[k]) 2+HiaYDZ  
break; #]2u!a ma  
SortUtil.swap(queue,j,k); .:}\Z27-c  
k = j; sr4K-|@  
} ORNE>6J H  
} y-YYDEl  
sQw-#f7t  
}  Sk-Ti\  
E_P]f%  
} BKk*<WMD  
tq[C"| dH  
SortUtil: O{PRK5^h  
gTT-7  
package org.rut.util.algorithm; 53A=O gk8S  
(,>`\\  
import org.rut.util.algorithm.support.BubbleSort; bc-"If Z&  
import org.rut.util.algorithm.support.HeapSort; {#MViBhd%  
import org.rut.util.algorithm.support.ImprovedMergeSort; d hy=x  
import org.rut.util.algorithm.support.ImprovedQuickSort; +;T%7j"wz  
import org.rut.util.algorithm.support.InsertSort; Z:}^fZP  
import org.rut.util.algorithm.support.MergeSort; +t f=  
import org.rut.util.algorithm.support.QuickSort; Vufw:}i+^  
import org.rut.util.algorithm.support.SelectionSort; <[Vr(.A  
import org.rut.util.algorithm.support.ShellSort; w jF\>  
@)}U\=  
/** Rp#SqRy`  
* @author treeroot =g ]C9'I3  
* @since 2006-2-2 QnqX/vnR  
* @version 1.0 ,=FYf|Z  
*/ U w)1yzX  
public class SortUtil { ^VQiq7 xm  
public final static int INSERT = 1; r*Mm5QozA  
public final static int BUBBLE = 2; |kn}iA@72p  
public final static int SELECTION = 3; @0G} Q  
public final static int SHELL = 4; O3Uu{'=0  
public final static int QUICK = 5; 8^T' a^Wt  
public final static int IMPROVED_QUICK = 6; ?~$y3<[  
public final static int MERGE = 7; ^U1;5+2G+~  
public final static int IMPROVED_MERGE = 8; shD$,! k  
public final static int HEAP = 9; |Z<adOg  
*+G K ?Ga  
public static void sort(int[] data) { z9gZ/d   
sort(data, IMPROVED_QUICK); *\> &  
} +{s^"M2`  
private static String[] name={ `JC!uc  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" OA8pao~H  
}; |laq y`D  
FUQT,7CA  
private static Sort[] impl=new Sort[]{ @[^H*^1|g  
new InsertSort(), <rkF2-K,  
new BubbleSort(), >U17BGJ.  
new SelectionSort(), (HEjmQjE  
new ShellSort(), c;WS !.  
new QuickSort(), w v1R ]3}  
new ImprovedQuickSort(), TS-[p d  
new MergeSort(), ."2V:;;  
new ImprovedMergeSort(), .]" o-(gB  
new HeapSort() /a,q4tD@  
}; %V$^CWOy  
90q*V%cS  
public static String toString(int algorithm){ %Z.!Bm:  
return name[algorithm-1]; It4F;Ah  
} {uw]s< 6  
hAY_dM  
public static void sort(int[] data, int algorithm) { [=iq4F'7  
impl[algorithm-1].sort(data); }"szL=s  
} ,HkJ.6KF  
|i|O9^*%  
public static interface Sort { $wBUu   
public void sort(int[] data); =Vi+wH{xM  
} , vR4x:W  
}\9qN!ol  
public static void swap(int[] data, int i, int j) { Q5Wb)  
int temp = data; *2 [r?!  
data = data[j]; \d6A<(!=v  
data[j] = temp; Q>|<R[.7  
} V Bg\)r[  
} p4/D%*G^`  
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