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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。 N=TDywRI  
插入排序: QfI@=Kbg%#  
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package org.rut.util.algorithm.support; Rj])c^ZA'*  
!mu1e=bY>  
import org.rut.util.algorithm.SortUtil; 7\EY&KI"0  
/** ifcC [.im  
* @author treeroot m4'x>Z  
* @since 2006-2-2 #PA 9bM  
* @version 1.0 NFBhnNH+  
*/ #;s5=aH  
public class InsertSort implements SortUtil.Sort{ pLsWy&G  
UO_tJN#X  
/* (non-Javadoc) 5>S)+p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L~&r.81  
*/ h0zv @,u  
public void sort(int[] data) { &&`-A6`p  
int temp; Qjd<%!]+\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /fC8jdp&  
} i-`J+8|d  
} > ZKHjw  
} g I@I.=y  
1\%2@NR  
} 1YvE/<6  
A%% Vyz  
冒泡排序: U$wD'v3pw  
tZ_D.syBAc  
package org.rut.util.algorithm.support; h7o?z!  
\EQCR[7qu7  
import org.rut.util.algorithm.SortUtil; |&AZ95v   
L IRdWGQ4  
/** uu;1B.[b  
* @author treeroot E}8wnrxf  
* @since 2006-2-2 n>?eTlO3  
* @version 1.0 C=<PYkt,L  
*/ +$\/HO  
public class BubbleSort implements SortUtil.Sort{ zF#:Uc`C5U  
SuFGIb7E  
/* (non-Javadoc) ,!oR"b!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V D.T=(  
*/ fW3NH7aUG  
public void sort(int[] data) { >A ?,[p`<  
int temp; )^LiAL h  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %O\zYtQR  
if(data[j] SortUtil.swap(data,j,j-1); \??20iz  
} Q;y)6+VU4  
} 3u~V&jl  
} HCZVvsG  
} G)3Q|Vc  
Wr;9Mz&{  
} -5d^n\CDK  
J @^Ypq  
选择排序: tu5T^"B qO  
0^ >b=a  
package org.rut.util.algorithm.support; 4-JyK%m,0  
W9/HM!  
import org.rut.util.algorithm.SortUtil; !]t5(g_  
}ISc^W) t  
/** =.ReM_.  
* @author treeroot Ktn:6=,  
* @since 2006-2-2 #-8%g{  
* @version 1.0 pra0:oHN  
*/ o&:'MwU  
public class SelectionSort implements SortUtil.Sort { JbLHW26pl  
!6*m<#Qm  
/* W>y &  
* (non-Javadoc) }5]7lGR  
* '))K' u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /#g P#Z%  
*/ W*^_Ul|  
public void sort(int[] data) { PHx No)  
int temp; Vi'zSR28Z  
for (int i = 0; i < data.length; i++) { HJt@m &H|  
int lowIndex = i; yGvBQ2kYb  
for (int j = data.length - 1; j > i; j--) { n'qWS/0U=  
if (data[j] < data[lowIndex]) { BKk+<#Ti  
lowIndex = j; K7=> o*p  
} ,U?^u%  
} fRomP-S  
SortUtil.swap(data,i,lowIndex); bO+]1nZ.  
} ,C}s8|@k  
} i2l/y,UX  
$tB `dDj  
} ;2[o>73F  
hkl9 EVO)  
Shell排序: SGK 5  
=;~*YD(%/  
package org.rut.util.algorithm.support; #R*7y%cO  
g<g$c<sm  
import org.rut.util.algorithm.SortUtil; =+w!fy  
(Q}ByX  
/** }j;G`mV2  
* @author treeroot aI_[h v  
* @since 2006-2-2 "2z&9`VIY  
* @version 1.0 x,LY fy"0  
*/ !4+ FN)  
public class ShellSort implements SortUtil.Sort{ n.OsmCRN;  
Hb3t|<z  
/* (non-Javadoc) __|Y59J%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bkFO4OZd  
*/ @wcrtf~{)&  
public void sort(int[] data) { .,<w_=  
for(int i=data.length/2;i>2;i/=2){ iaHL&)[YK  
for(int j=0;j insertSort(data,j,i); ]]XXcQ,A  
} W:JR\KKU  
} TW-^C ;  
insertSort(data,0,1); N^4CA@'{  
} REWW(.3o  
rUh2[z8:  
/** d'@i8N["{  
* @param data W0XfU`  
* @param j QzS=oiL  
* @param i mjKu\7F  
*/ $;Z0CG  
private void insertSort(int[] data, int start, int inc) { .~X&BY>qP  
int temp; KW(^-:wmr  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); oaG;i51!  
} <FfmDR  
} 0( q:K6zI}  
} )3.=)?XW  
|cgc^S/~H  
} {$Z S 2 7  
oc;4;A-;`c  
快速排序: DO6 pv  
17#t7Yk  
package org.rut.util.algorithm.support; Jk;dtLL}4  
QXEz  
import org.rut.util.algorithm.SortUtil; ~rlPS#]o  
!GnwE  
/** 1>L8EImx]V  
* @author treeroot Dg*'n  
* @since 2006-2-2 QY c/f"9  
* @version 1.0 mcTC'. 9  
*/ E8L\3V4  
public class QuickSort implements SortUtil.Sort{ ||Vx:(d7D&  
Qt>Bvu Q  
/* (non-Javadoc) x27$h)R0v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;$3e pP  
*/ XbIxGL  
public void sort(int[] data) { `6<Qb=  
quickSort(data,0,data.length-1); <Vl`EfA(  
} >dXB)yl  
private void quickSort(int[] data,int i,int j){ T%4yPmY  
int pivotIndex=(i+j)/2; >4bWXb'S}C  
file://swap o:`^1  
SortUtil.swap(data,pivotIndex,j); `=%G&_3_<  
8ib e#jlg  
int k=partition(data,i-1,j,data[j]); f`YHZ O  
SortUtil.swap(data,k,j); 49= K]X  
if((k-i)>1) quickSort(data,i,k-1); kn+@)3W:*  
if((j-k)>1) quickSort(data,k+1,j); +2>, -V  
Cz6bD$5  
} .>1vN+  
/** s9SUj^  
* @param data XZrzG P(  
* @param i V/tl-;W  
* @param j mc4|@p*  
* @return f.0HIc  
*/ @H}{?-XyA  
private int partition(int[] data, int l, int r,int pivot) { 5Gm8U"UR  
do{ NIHcX6Nw  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ZEs^b  
SortUtil.swap(data,l,r); m -0}Pe9L  
} : -$TD('F  
while(l SortUtil.swap(data,l,r); a:KL{e[   
return l; x>+sqFd\  
} 2M)E1q|a  
f9t+x+ Z  
} I#;.; %u  
NR"C@3kD]o  
改进后的快速排序: <?%49  
:XOjS[wBm  
package org.rut.util.algorithm.support; !LCy:>i!d  
,(f({l[J}  
import org.rut.util.algorithm.SortUtil; 'p)DJUwt  
!-t"}^)  
/** WW-}c;cnK  
* @author treeroot ? M.'YB2  
* @since 2006-2-2 >7z(?nQYT^  
* @version 1.0 lo-VfKvy  
*/ }(oWXwFb&W  
public class ImprovedQuickSort implements SortUtil.Sort { xeKm} MN]S  
\H 5t-w=  
private static int MAX_STACK_SIZE=4096; h6?o)Q>N  
private static int THRESHOLD=10; pZ]&M@Ijp  
/* (non-Javadoc) G=l:v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l!": s:/'  
*/ bl{W{?QI  
public void sort(int[] data) { }!"Cvu  
int[] stack=new int[MAX_STACK_SIZE]; 89t"2|9 u  
/Mj|Px%  
int top=-1; PmQeO*f+  
int pivot; 5sSAH  
int pivotIndex,l,r; _o&NbDH  
+0%Y.O/{  
stack[++top]=0; 0}M'>  
stack[++top]=data.length-1; Ym6v4k!@O  
_ Td#C1g3  
while(top>0){ /T 2 v`Li  
int j=stack[top--]; op3a*KG  
int i=stack[top--]; &'Xgf!x  
9*XT|B  
pivotIndex=(i+j)/2; ilZQ/hOBH  
pivot=data[pivotIndex]; {asq[;]  
` l %,4qR  
SortUtil.swap(data,pivotIndex,j); {REGoe=W%  
,; Uf>8~  
file://partition  Hs6Kki1  
l=i-1; K5z<n0X ~  
r=j; OTNI@jQ)  
do{ @'y8* _  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Df$~=A}  
SortUtil.swap(data,l,r); A)&CI6(  
} w|NId,#f  
while(l SortUtil.swap(data,l,r); 0QyL}y2  
SortUtil.swap(data,l,j); (EH}lh }%  
@z:E]O}  
if((l-i)>THRESHOLD){ ^}`24~|y  
stack[++top]=i; B~b ='jN  
stack[++top]=l-1; uMRzUK`QK  
} uo ;m  
if((j-l)>THRESHOLD){ ,W;|K 5  
stack[++top]=l+1; uo(LZUjPbN  
stack[++top]=j; 6$l?D^{  
} 24wr=5p]Q  
QZ[S, c^  
} KOoV'YSC[(  
file://new InsertSort().sort(data); 7Sh1QDYZ  
insertSort(data); tKds|0,j|  
} '&$zgK9T?  
/** X&Sah}0V&  
* @param data 8"p rWAN  
*/ |:,`dQfw  
private void insertSort(int[] data) { 1H-~+lf  
int temp; N#@v`S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '8FHn~F  
}  ?$y/b}8  
} r]]:/pw?t  
} -$49l  
+|x%a2?x:  
} [+="I &  
[.w`r>kZI  
归并排序: [)il_3t  
{s8g;yU5  
package org.rut.util.algorithm.support; s#8T46?  
0uIBaW3s  
import org.rut.util.algorithm.SortUtil; &|' NDcp  
wWSE[S$V  
/** G[u{! 2RS  
* @author treeroot y\[q2M<  
* @since 2006-2-2 ?b93! Q1  
* @version 1.0 O}j@+p%M  
*/ 87m`K Str7  
public class MergeSort implements SortUtil.Sort{ Wtp=1  
wA6E7vi'  
/* (non-Javadoc) -B(p8YH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [k&7h,  
*/ w,_LC)9  
public void sort(int[] data) { O[z6W.  
int[] temp=new int[data.length]; B\qy:nr j  
mergeSort(data,temp,0,data.length-1); >/NegJh'F}  
} }^P"R[+4u  
2|U6dLZ!  
private void mergeSort(int[] data,int[] temp,int l,int r){ 3+q-yP#X  
int mid=(l+r)/2; yU"#2 *C  
if(l==r) return ; P% 8U  
mergeSort(data,temp,l,mid); P>$+XrTE  
mergeSort(data,temp,mid+1,r); Om_ "X6  
for(int i=l;i<=r;i++){ hh2&FI  
temp=data; ;0NJX)GL  
} c#>:U,j  
int i1=l; t< RPDQ>  
int i2=mid+1; Kaaz,C.$^  
for(int cur=l;cur<=r;cur++){ A PrrUo  
if(i1==mid+1) XqwP<5Z  
data[cur]=temp[i2++]; .F[5{XV  
else if(i2>r) d/awQXKe7  
data[cur]=temp[i1++]; <I0om(P  
else if(temp[i1] data[cur]=temp[i1++]; E*kZGHA  
else DZA '0-  
data[cur]=temp[i2++]; 5 +j):_  
} &JD^\+7U:  
} ~QUN O~  
c%&*yR  
} BB ::zBg  
ZwiXeD+4  
改进后的归并排序: Dtyw]|L\H  
8i<]$  
package org.rut.util.algorithm.support; c?aOX/C'  
51* [Ibx  
import org.rut.util.algorithm.SortUtil; TI0=nfj  
JXR]G  
/** 1/6}E]-F  
* @author treeroot DF-.|-^9I  
* @since 2006-2-2 sP~xe(  
* @version 1.0 /CbiYm  
*/ ,]y_[]636  
public class ImprovedMergeSort implements SortUtil.Sort { NbCIL8f]  
P m&^rC;  
private static final int THRESHOLD = 10; 2 zG;91^  
 =WEDQ\ c  
/* `.]oH1\  
* (non-Javadoc) 2L51 H(  
* I1s$\NZ~]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yS3or(K  
*/ H6Gs&yk3  
public void sort(int[] data) { h##U=`x3  
int[] temp=new int[data.length]; n</Rd=  
mergeSort(data,temp,0,data.length-1); c>Ri6=C  
} =Lnip<t>ja  
"v0SvV<7  
private void mergeSort(int[] data, int[] temp, int l, int r) { hW6Ksn,*  
int i, j, k; 0kw)-)=  
int mid = (l + r) / 2; 6$zd2N?  
if (l == r) Eb CK9  
return; A"R(?rQi=  
if ((mid - l) >= THRESHOLD) g1]bI$;  
mergeSort(data, temp, l, mid); {M= *>P]E  
else 7s;;2<k;_  
insertSort(data, l, mid - l + 1); 7) a f  
if ((r - mid) > THRESHOLD) JxEz1~WK &  
mergeSort(data, temp, mid + 1, r); !DHfw-1K  
else P^U.VXY}  
insertSort(data, mid + 1, r - mid); Vock19P  
7(P4KvkI  
for (i = l; i <= mid; i++) { ub+XgNO  
temp = data; G|||.B 8  
} pRUQMPn (  
for (j = 1; j <= r - mid; j++) { 6z:/ma^  
temp[r - j + 1] = data[j + mid]; SwaPRAF  
} !XM*y  
int a = temp[l]; 1s(i\&B  
int b = temp[r]; `tXd?E/e  
for (i = l, j = r, k = l; k <= r; k++) { %|>D{q6C  
if (a < b) { Q ;5A~n  
data[k] = temp[i++]; 6#\:J0  
a = temp; u1d%wOY  
} else { bf2r8   
data[k] = temp[j--]; 2uV5hSHYe  
b = temp[j]; ]v?jfy  
} AS[j)x!  
} CC3M7|eO3  
} 1TF S2R n  
BHErc\ITP  
/** <(yAat$H  
* @param data v!$?;"d+  
* @param l wM3m'# xJ  
* @param i @P i]kWW})  
*/ 2^w{Hcf  
private void insertSort(int[] data, int start, int len) { .[3C  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Ttp%U8-LJR  
} 5w+&plIJ  
} c~OvoTF,  
} @D `j   
} H<P d&  
hb %F"Q  
堆排序: y9=<q%Kc-  
K8_\U0 K  
package org.rut.util.algorithm.support; _}T )\o   
Gvvw:]WgF  
import org.rut.util.algorithm.SortUtil; <aI}+  
Cb.M  
/** */K]sQZa  
* @author treeroot (v? rZv  
* @since 2006-2-2 B7'yc`)H  
* @version 1.0 Q&"oh  
*/ y0/FyQs  
public class HeapSort implements SortUtil.Sort{ ` K0PLxSv  
]&`=p{Z  
/* (non-Javadoc) ]mgpd}Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D(&WEmm\B  
*/ F~bDg tN3  
public void sort(int[] data) { Kc#1H|'2N  
MaxHeap h=new MaxHeap(); `R-?+76?  
h.init(data); 2iOYC0`!  
for(int i=0;i h.remove(); ]D=fvvST  
System.arraycopy(h.queue,1,data,0,data.length); )%f]P<kq6  
} "V`DhOG&  
In+2~Jw/2!  
private static class MaxHeap{ '* /$66|  
>m{>0k(^`  
void init(int[] data){ RZ ?SiwE  
this.queue=new int[data.length+1]; `>)pqI%L[g  
for(int i=0;i queue[++size]=data; x~{W(;`!  
fixUp(size); ;d]vAj  
} hJz]N$@W  
} Ai5+ ;8z+  
cR*~JwC:  
private int size=0; AE Elaq.B  
,068IEs  
private int[] queue; +ef>ek  
nNnfcA&W  
public int get() { =En1?3?  
return queue[1]; _9Rj,  
} !T8sWMY  
1rLxF{,  
public void remove() { #YK3Ogb,  
SortUtil.swap(queue,1,size--); d3#e7rQ8  
fixDown(1); {eQijW2Z3  
} lQm7`+  
file://fixdown 8LXK3D}?3  
private void fixDown(int k) { )V*`(dn'zm  
int j; ?U1Nm~'UZ  
while ((j = k << 1) <= size) { :hR^?{9Z4>  
if (j < size %26amp;%26amp; queue[j] j++; NX:\iJD)1U  
if (queue[k]>queue[j]) file://不用交换 JLjs`oq h  
break; }_@p`>|)rB  
SortUtil.swap(queue,j,k); -9o7a_Z  
k = j; 1F3Q^3+  
} 2k&Voa  
} Pt-O1$C[  
private void fixUp(int k) { aYWUwYB$  
while (k > 1) { wqJl[~O$  
int j = k >> 1; pEX Q  
if (queue[j]>queue[k]) 1&9w]\Ae7l  
break; wByTNA7  
SortUtil.swap(queue,j,k); 6VJS l%X  
k = j; 40dwp*/!  
} D>Rlm,U  
} '- #QK'p  
G-sQL'L[U  
} A* Pz-z>z  
D*sL&Rt][Y  
} nHp$5|r<  
XJ"xMv  
SortUtil: %P(2uesd  
zvdIwV&oT  
package org.rut.util.algorithm; S1C#5=  
"I{Lcn~!@  
import org.rut.util.algorithm.support.BubbleSort; i<=2 L?[.I  
import org.rut.util.algorithm.support.HeapSort; 6KD-nr{S  
import org.rut.util.algorithm.support.ImprovedMergeSort; z92Xc  
import org.rut.util.algorithm.support.ImprovedQuickSort; >!tfvM2X{  
import org.rut.util.algorithm.support.InsertSort; kV!1k<f  
import org.rut.util.algorithm.support.MergeSort; D-x*RRkpp  
import org.rut.util.algorithm.support.QuickSort; Ra:UnA  
import org.rut.util.algorithm.support.SelectionSort; vmo!  
import org.rut.util.algorithm.support.ShellSort; [ <k&]Kv  
BJ fBY H,M  
/** B7o US}M  
* @author treeroot 2=1qmQE  
* @since 2006-2-2 kqq1;Kd  
* @version 1.0 s ;]"LD@  
*/ 6q `Un}  
public class SortUtil { h,b_8g{!  
public final static int INSERT = 1; aOsc_5XDR;  
public final static int BUBBLE = 2; %e|UA-(  
public final static int SELECTION = 3; {]N7kY.W  
public final static int SHELL = 4; N$.ls48a4-  
public final static int QUICK = 5; 7;] IlR6  
public final static int IMPROVED_QUICK = 6; M8y|Lm}o  
public final static int MERGE = 7; 1(% 6X*z  
public final static int IMPROVED_MERGE = 8; Ub4)x  
public final static int HEAP = 9; 8H8Q  
\]\h,Y8  
public static void sort(int[] data) { Z^mQb2e.  
sort(data, IMPROVED_QUICK); /BhP`a%2Q  
} 'GO *6$/  
private static String[] name={ Fx)><+-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _.%g'=14f  
}; n3 Rf:j^R  
K 6,c||#<  
private static Sort[] impl=new Sort[]{ Uv=)y^H~*A  
new InsertSort(), .G"T;w 6d  
new BubbleSort(), XIl#0-E0X  
new SelectionSort(), {>TAnb?n  
new ShellSort(), x`'s  
new QuickSort(), v3kT~uv  
new ImprovedQuickSort(), 47A[-&y*X  
new MergeSort(), 7;?7q  
new ImprovedMergeSort(), s!Iinc^p  
new HeapSort() h///  
}; Mt%Q5^  
h96<9L  
public static String toString(int algorithm){ Qkw_9  
return name[algorithm-1]; _p9 _Pg8  
}   &._Mh  
>N}+O<Fc  
public static void sort(int[] data, int algorithm) { 5Z#(C#  
impl[algorithm-1].sort(data); s9fEx -!y  
} v`:!$U* H=  
.cmhi3o4  
public static interface Sort { 2(Yt`3Go(  
public void sort(int[] data); pF}E`U=Z  
} N~S#( .}[  
5p3: 8G7  
public static void swap(int[] data, int i, int j) { q>6,g>I  
int temp = data; $d&7q5[  
data = data[j]; 9,"gXsvx(  
data[j] = temp; &[yYgfsp  
} >gn@NJ2N  
} 4]Gm4zO  
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