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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。 Kct@87z  
插入排序: YcDe@Zuwn  
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package org.rut.util.algorithm.support; =qu(~]2(  
O.QK"pKD\  
import org.rut.util.algorithm.SortUtil; O_~7Glu  
/** ,Nm$i"Lg  
* @author treeroot vFv3'b$;G  
* @since 2006-2-2 5(m(xo6  
* @version 1.0 &,:h)  
*/ F3M aqr y  
public class InsertSort implements SortUtil.Sort{ B?bW1  
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/* (non-Javadoc) /F)H\*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q v*7K@  
*/ I/6)3 su%  
public void sort(int[] data) { x;s0j"`Jb  
int temp; ac{?+]8}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fyknP)21I  
} W?woNt'n  
} |{>ER,<-  
} \ 0W!4D  
p>w]rE:}  
} C1kYl0 zR[  
@(g_<@Jz  
冒泡排序: *ISZlR\#  
yLE7>48  
package org.rut.util.algorithm.support; =FP0\cQ.  
j=RRfFg)  
import org.rut.util.algorithm.SortUtil; tBbOY}.VD  
(t+;O;  
/** I#F!N6;  
* @author treeroot `F YjQ e"p  
* @since 2006-2-2 D\dWt1n  
* @version 1.0 /D&%v *~E  
*/ "TyJP[/  
public class BubbleSort implements SortUtil.Sort{ 4`m~FNVS   
RD7^&  
/* (non-Javadoc) nAIo{ F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [epi#]m  
*/ .IBp\7W!?E  
public void sort(int[] data) { IYn]U4P.  
int temp; D"(L5jR8m@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _|[UI.a  
if(data[j] SortUtil.swap(data,j,j-1); eV:9y  
} t7 n(Qkrv  
} nRL. ppUI  
} m7a#qs; ,  
} I-y#Ks1p+  
7w,FX.=;cv  
} U$]|~41#  
JWvjWY2+P  
选择排序: )'17r82a  
"k*PA\U  
package org.rut.util.algorithm.support; CYYkzcc^  
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import org.rut.util.algorithm.SortUtil; drzL.@h|  
B~o\+n  
/** 7S/G B  
* @author treeroot S}APQ  
* @since 2006-2-2 fVb-$  
* @version 1.0 d \x7Zw>  
*/ '!l 1=cZD  
public class SelectionSort implements SortUtil.Sort { Ox#\M0Wn$3  
i1H\#;`$  
/* ~P~  
* (non-Javadoc) ~U;rw&'H  
* l @^3Exwt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U2uF&6v  
*/ >e\9Bf_  
public void sort(int[] data) { a=M\MZK>  
int temp; !vG'J\*xc  
for (int i = 0; i < data.length; i++) { ml\4xp,  
int lowIndex = i; 4`JH&))}  
for (int j = data.length - 1; j > i; j--) { O@p]KSfk  
if (data[j] < data[lowIndex]) { 7AYd!n&S  
lowIndex = j; 0a-:<zm  
} O'Js}  
} m(pE5B(  
SortUtil.swap(data,i,lowIndex); R|wGU)KEc'  
} A&nU]R8S  
} w)Covz'uf  
PRz/inru-  
} LX^u_Iu   
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Shell排序: /yM:| `tT  
jBegh9KHq  
package org.rut.util.algorithm.support; 8 Y5  
v{}#?=I5  
import org.rut.util.algorithm.SortUtil; e^.Fa59  
4~B> 9<$e>  
/** <~ Sz04  
* @author treeroot =JJL[}a|  
* @since 2006-2-2 E9;|'Vy<E  
* @version 1.0 xQUu|gtL4  
*/ ;[fw]P n  
public class ShellSort implements SortUtil.Sort{ `ho1nY$)CE  
~8lwe*lNV  
/* (non-Javadoc) s8}@=]aA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L'u\ w  
*/ qAw x2fPu  
public void sort(int[] data) { mauI42  
for(int i=data.length/2;i>2;i/=2){ o<N  nV  
for(int j=0;j insertSort(data,j,i); ^<e.]F25M  
} fl\ly `_  
} -;'1^  
insertSort(data,0,1); JU4q zi  
} 8 XU1 /i7N  
)kP5u`v  
/** M@5?ZZ4L  
* @param data 5-M&5f.   
* @param j [ i]Ub0Dh7  
* @param i K"r*M.P>  
*/ E2m8UBS  
private void insertSort(int[] data, int start, int inc) { _'(,  
int temp; XHK70: i  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1;{Rhu7* k  
} NUp<e%zB  
} /Z$&pqs!  
} vMS |$L  
6Udov pl  
} q}]XYys  
q#s,- uu  
快速排序: ~m$Y$,uH  
sD=n95`v  
package org.rut.util.algorithm.support; BW "5Aj  
PbmDNKEh{  
import org.rut.util.algorithm.SortUtil; ia MUsa{  
1~PV[2a  
/** G%s 2P.cd  
* @author treeroot ` eXaT8  
* @since 2006-2-2 4y+< dw  
* @version 1.0 Y 1t\iU  
*/ VSSu &Q  
public class QuickSort implements SortUtil.Sort{ ;LMJd@  
3nhXZOO1  
/* (non-Javadoc) !Ze5)g%H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /\hzb/  
*/ aXoVy&x=  
public void sort(int[] data) { aP/T<QZ~  
quickSort(data,0,data.length-1); Wh.?j>vB  
} } x2DT8u  
private void quickSort(int[] data,int i,int j){ $GTU$4u  
int pivotIndex=(i+j)/2; Ipf =ZD  
file://swap eY|  
SortUtil.swap(data,pivotIndex,j); /%;mqrdk  
ayfFVTy1d  
int k=partition(data,i-1,j,data[j]); =,UWX3`f  
SortUtil.swap(data,k,j); K[!&b0O  
if((k-i)>1) quickSort(data,i,k-1); IkGfnXJ  
if((j-k)>1) quickSort(data,k+1,j); hBBUw0"  
;oy-#p>N%  
} 6 BCf:mqP  
/** o !vE~  
* @param data iLkZ"X.'|1  
* @param i * /:x sI  
* @param j .n~M(59  
* @return ZR(x%ews  
*/ PEW=@xj2y  
private int partition(int[] data, int l, int r,int pivot) { Z7=`VNHc  
do{  [D<1 CF  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Kq;8=xP[  
SortUtil.swap(data,l,r); j 4^97  
} $d_|NssvU  
while(l SortUtil.swap(data,l,r); 'LO^<  
return l; 5nKj )RH7M  
} %3ICI  
BZ?.D_bu  
} -i%e!DgH  
/(.mp<s0  
改进后的快速排序: p_${Nj  
5 4L\Jx  
package org.rut.util.algorithm.support; % a@>_  
V{:A3C41  
import org.rut.util.algorithm.SortUtil; V4KMOYqm  
kNobl  
/** Cd>WUw  
* @author treeroot SV~cJ]F  
* @since 2006-2-2 XYZ4TeW\1  
* @version 1.0 f7X6fr<  
*/ NbU[l  
public class ImprovedQuickSort implements SortUtil.Sort { Yd#/1!A7u  
J /f  
private static int MAX_STACK_SIZE=4096; U qFv}VsnF  
private static int THRESHOLD=10; 2C9V|[U,  
/* (non-Javadoc) fngOeLVG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u (em&M  
*/ b"vv>Q~U  
public void sort(int[] data) { A*}.EClH  
int[] stack=new int[MAX_STACK_SIZE]; 2gCX}4^3b  
K"4>DaK2P  
int top=-1; '>' wK.  
int pivot; Zw ^kmSL"  
int pivotIndex,l,r; TwVlg ;  
]Zyur`  
stack[++top]=0; to=y#$_  
stack[++top]=data.length-1; .`4{9?bR  
/7t>TYip!  
while(top>0){ k=4N.*#`y  
int j=stack[top--]; YQ6f}O  
int i=stack[top--]; {:]9Q Tq  
7 D^gMN%p  
pivotIndex=(i+j)/2; s0k`p<q  
pivot=data[pivotIndex]; MBhWMCN2  
p4-o/8rO  
SortUtil.swap(data,pivotIndex,j); *U]V@;XF  
!,Va(E|=  
file://partition ysQ,)QoiR{  
l=i-1; 3P^sM1  
r=j; PEuIWXr  
do{ .tzG_  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qx4I_%  
SortUtil.swap(data,l,r); Z^IPZF  
} Ux}(?Z  
while(l SortUtil.swap(data,l,r); ;[ u%_  
SortUtil.swap(data,l,j); Ire\i7MF:  
2L} SJUk*  
if((l-i)>THRESHOLD){ 1][S#H/?  
stack[++top]=i; D IzH`|Y  
stack[++top]=l-1; -2A(5B9Fq  
} gm[z[~X@  
if((j-l)>THRESHOLD){ }9W4"e2)  
stack[++top]=l+1; ~R26  
stack[++top]=j; +L9Eqll  
} Gq }U|Z  
'zGo?a  
} D(H>R&b!  
file://new InsertSort().sort(data); K3x.RQQ-  
insertSort(data); T3pmVl  
} 6DuEL=C  
/** }` != m  
* @param data Wu_kx2h  
*/ nY`RR C  
private void insertSort(int[] data) { eK!V );  
int temp; Q&eQQ6b^Ih  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WUsKnf  
} o)2W`i&  
} I{*<4a7q  
} 8_6Q~  
-cSP _1  
} fI~Xmw+}}  
P}TI q#  
归并排序: K?zH35f$  
3T}izG]  
package org.rut.util.algorithm.support; s+EAB{w$  
9J>&29@us0  
import org.rut.util.algorithm.SortUtil; j;fpQ_KL  
!H irhD N  
/** |<.lW  
* @author treeroot =UJ:tSr  
* @since 2006-2-2 DJ(q 7W  
* @version 1.0 43Qtj$F  
*/ ]b%Hy  
public class MergeSort implements SortUtil.Sort{ cnFI &,FM  
N%"Y  
/* (non-Javadoc) K_El&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !>e5z|1   
*/ G1"zElug  
public void sort(int[] data) { Y))u&*RuT0  
int[] temp=new int[data.length]; Mc%Nf$XQ  
mergeSort(data,temp,0,data.length-1); jp"JafS/E  
} $n+w$CI)  
w[ !^;#  
private void mergeSort(int[] data,int[] temp,int l,int r){ MV\|e1B}  
int mid=(l+r)/2; bBS,-vN  
if(l==r) return ; fD07VBS yl  
mergeSort(data,temp,l,mid); :)_~w4&  
mergeSort(data,temp,mid+1,r); `(f!*Ru@/z  
for(int i=l;i<=r;i++){ DiEluA&w9  
temp=data; ?}RSwl  
} 2;^y4ssg  
int i1=l; ?I [8'  
int i2=mid+1; H*Kj3NgY  
for(int cur=l;cur<=r;cur++){ B,K>rCZ/  
if(i1==mid+1) -x'z XvWZ  
data[cur]=temp[i2++]; \z$p%4`E@  
else if(i2>r) W0k0$\iX  
data[cur]=temp[i1++]; ~d%Pnw|  
else if(temp[i1] data[cur]=temp[i1++]; t7m>A-I  
else $P(v{W)  
data[cur]=temp[i2++]; eOXHQjuj  
} 8 XICF  
} O=$~O\}b  
VA9Gb 9  
} o4%y>d)  
#%D_Y33;  
改进后的归并排序: ) :\xHR4  
"bm  
package org.rut.util.algorithm.support; ~5 *5  
cFJ-Mkl l  
import org.rut.util.algorithm.SortUtil; B7]C]=${m  
E[*Fz1>  
/** ^ mS o1?<  
* @author treeroot |{@8m9JR  
* @since 2006-2-2 UY<e&Npo  
* @version 1.0 `8I&7c  
*/ *0|IXGr  
public class ImprovedMergeSort implements SortUtil.Sort { /-qxS <?o  
KLL;e/Gf  
private static final int THRESHOLD = 10; ?@6/E<-Z$  
H.W E6  
/* }>'PT -  
* (non-Javadoc) <]T`3W9  
* LK;k'IJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9{$<0,?  
*/ *0}3t <5  
public void sort(int[] data) { IhBp%^H0-  
int[] temp=new int[data.length]; (&P9+Tl  
mergeSort(data,temp,0,data.length-1); kdCP  
} x&`~R>5/  
%rF?dvb;?  
private void mergeSort(int[] data, int[] temp, int l, int r) { gi-Yqco  
int i, j, k; W0C@9&pn6  
int mid = (l + r) / 2; yY&3p1AxW]  
if (l == r) GV^i`r^"  
return; i:cXwQG}B  
if ((mid - l) >= THRESHOLD) 1$2D O  
mergeSort(data, temp, l, mid); cwuO[^S}  
else Sje wuIi1  
insertSort(data, l, mid - l + 1); |hO~X~P  
if ((r - mid) > THRESHOLD) u1~9{"P*  
mergeSort(data, temp, mid + 1, r); &tZG @  
else `xc^_781\  
insertSort(data, mid + 1, r - mid); $&=p+  
3G meD/6  
for (i = l; i <= mid; i++) { +,&O1ykY  
temp = data; ,j?.4{rHJ  
} 7nVRn9Hn  
for (j = 1; j <= r - mid; j++) { AWjm~D-?  
temp[r - j + 1] = data[j + mid]; bO;(bE m@  
} e } *0ghKI  
int a = temp[l]; M@(^AK{mU  
int b = temp[r]; jV/CQM5a+  
for (i = l, j = r, k = l; k <= r; k++) { i,nm`Z>u  
if (a < b) { H Y ynMP  
data[k] = temp[i++]; Ka|eFprS  
a = temp; 0vGyI>  
} else { W{5:'9,  
data[k] = temp[j--]; ZO7&vF}  
b = temp[j]; 9Q!b t  
} Dl&GJ`&:p  
} ~RBrSu)  
} 3pXLSdxB  
vNW jH!'  
/**  2T)sXBu  
* @param data vMs;>lhtg  
* @param l !>(RK"KWq]  
* @param i fIocq  
*/ f7hXQ|$  
private void insertSort(int[] data, int start, int len) { >az;!7~cD  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); t0#[#I1+  
} d"U(`E=H9  
} m9md|yS  
} Zw] ?.  
} {C^@Q"I  
R 4wr  
堆排序: nW+YOX|+  
eV6o3u:9  
package org.rut.util.algorithm.support; (X6sSO  
CkRX>)=py  
import org.rut.util.algorithm.SortUtil; x3e]d$  
O}#yijU3e  
/** DP7C?}(  
* @author treeroot 7W9~1 .SC  
* @since 2006-2-2 [rreFSy#@  
* @version 1.0 m= b~i^@  
*/ cUK\x2  
public class HeapSort implements SortUtil.Sort{ g6sjc,`  
^+R:MBK  
/* (non-Javadoc) i_F$&?)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n+D#k 8{  
*/ b>~RSO*  
public void sort(int[] data) { Gqyue7;0,  
MaxHeap h=new MaxHeap(); YCw('i(|  
h.init(data); c[0oh.  
for(int i=0;i h.remove(); m&R"2t_Z  
System.arraycopy(h.queue,1,data,0,data.length); c-5jYwV  
} %HSl)zEo>C  
MFg'YA2/  
private static class MaxHeap{ 5@XV6  
PM4>ThQ  
void init(int[] data){ -{9Gagy2&  
this.queue=new int[data.length+1]; LxT rG)4  
for(int i=0;i queue[++size]=data; kd;'}x=5yP  
fixUp(size); 9.0WKcwg  
} gKL1c{BV  
} +zRh fIJHH  
Dw |3Z  
private int size=0; K!b8= K`  
GM}C]MVD  
private int[] queue; 'Kis hXOn]  
/#yA%0=w  
public int get() { 9NWloK6bT  
return queue[1]; _@E "7<\  
} O}gX{_|6  
-3mgza  
public void remove() { @8"18HEp#  
SortUtil.swap(queue,1,size--); k!doIMj  
fixDown(1); .v,bXU$@YG  
} ) p^  
file://fixdown GOW"o"S  
private void fixDown(int k) { /S/aUvN  
int j; +5*vABvCu  
while ((j = k << 1) <= size) { 9bEM#Hj  
if (j < size %26amp;%26amp; queue[j] j++; )C}KR`"  
if (queue[k]>queue[j]) file://不用交换 2cjEex:&  
break; l#6&WWmr  
SortUtil.swap(queue,j,k); Z}[xQ5  
k = j; d~<QAh#rG  
} @xJCn}`Zj  
} sPpS~wk*  
private void fixUp(int k) { ycjJbL(.  
while (k > 1) { qG^_c;l6a  
int j = k >> 1; ,xj3w#`zaf  
if (queue[j]>queue[k]) 8&T,LNZoY  
break; QSmJ`Bm  
SortUtil.swap(queue,j,k); p1 4d ,}4W  
k = j; 0l1.O2 -  
} DoG%T(M!a9  
} S*rO0s:  
( H[  
} fM{1Os  
<N5rv3 s  
} XSl!T/d  
3q CHh  
SortUtil: `A"Q3sf%  
L1F###c  
package org.rut.util.algorithm; nF j-<!  
Q,n4i@E  
import org.rut.util.algorithm.support.BubbleSort; 'f6PjI  
import org.rut.util.algorithm.support.HeapSort; #~1wv^  
import org.rut.util.algorithm.support.ImprovedMergeSort; =Pj@g/25u  
import org.rut.util.algorithm.support.ImprovedQuickSort; wlL8X7+:  
import org.rut.util.algorithm.support.InsertSort; Nor`c+,4  
import org.rut.util.algorithm.support.MergeSort; Y.9~Bo<<r  
import org.rut.util.algorithm.support.QuickSort; 1XGG.+D  
import org.rut.util.algorithm.support.SelectionSort; 2x6<8J8v*  
import org.rut.util.algorithm.support.ShellSort; ~BtKd*~*  
N)P((>S;  
/** -^R b7 g-  
* @author treeroot DH/L`$  
* @since 2006-2-2 ]xI?,('_m  
* @version 1.0 &8waih(|  
*/ s1Okoxh/!V  
public class SortUtil { LjC6?a_?l  
public final static int INSERT = 1; }ymc5-  
public final static int BUBBLE = 2; IJldN6&\q  
public final static int SELECTION = 3; N-D(y  
public final static int SHELL = 4; ^ ~, ndH{  
public final static int QUICK = 5; R|$[U  
public final static int IMPROVED_QUICK = 6; Ou? r {$(b  
public final static int MERGE = 7; ]u;GNz}?  
public final static int IMPROVED_MERGE = 8; Pf{`/UlD  
public final static int HEAP = 9; rv`2*B  
8i[".9}G\  
public static void sort(int[] data) { L)1C'8 ).  
sort(data, IMPROVED_QUICK); D9,e3.?p  
} jzMhJ  
private static String[] name={ ot]>}[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" iwB8I^  
}; {ip=iiW2  
)-)ss"\+Ju  
private static Sort[] impl=new Sort[]{ W0C{~|e  
new InsertSort(), 2rF?Q?$,B  
new BubbleSort(),  xQX<w\s  
new SelectionSort(), O<4Q$|=&?  
new ShellSort(), c]e`m6  
new QuickSort(), :m]/u( /N  
new ImprovedQuickSort(), O >nK ,.  
new MergeSort(), qo)Q}0  
new ImprovedMergeSort(), +:fqL  
new HeapSort() D&4u63^  
}; t'dHCp}  
i5.?g<.H  
public static String toString(int algorithm){ A<mj8qz  
return name[algorithm-1]; ~g*Y, Y  
} $*YC7f  
dVPq%[J2  
public static void sort(int[] data, int algorithm) { N$C{f;xV  
impl[algorithm-1].sort(data); g8LT7  
} ;,<r|.6U  
ay=KfY5  
public static interface Sort { <\E"clZI  
public void sort(int[] data); f-vZ2+HP  
} O|HIO&M  
f0/jwfL  
public static void swap(int[] data, int i, int j) { 7bA4P*  
int temp = data; o9_(DJ<{  
data = data[j]; \Y51KB\  
data[j] = temp; I~d#p ]>  
} F9Ifw><XM  
} nu;} S!J  
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