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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。 Z:}^fZP  
插入排序: !jm a --  
Wo&i)S<i0F  
package org.rut.util.algorithm.support; h!.(7qdd  
Dqki}k~{  
import org.rut.util.algorithm.SortUtil; W!g ,  
/** pR $c<p  
* @author treeroot R)v`ZF,/b  
* @since 2006-2-2 |kn}iA@72p  
* @version 1.0 I('l )^m%  
*/ D~<GVp5T  
public class InsertSort implements SortUtil.Sort{ =o {`vv  
2 Ug jH  
/* (non-Javadoc) *UTk. :G5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z9gZ/d   
*/ A /MOY@%G  
public void sort(int[] data) { `JC!uc  
int temp; ny}?+&K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FUQT,7CA  
} z}5XLa^  
} >U17BGJ.  
} eu~;G H  
?FLjvmE9  
} $]_=B Jyu  
_ &T$0SZco  
冒泡排序: /a,q4tD@  
N7[~Y2i  
package org.rut.util.algorithm.support; W uQdz&s>  
EV}%D9:  
import org.rut.util.algorithm.SortUtil; ?VJ Fp^Ra  
@8 pRIS"V  
/** =Ij;I~  
* @author treeroot >uVG]  
* @since 2006-2-2 _|F h^hq  
* @version 1.0 7':|f"  
*/ =[P||  
public class BubbleSort implements SortUtil.Sort{ v>,XJ7P  
y==x  
/* (non-Javadoc) )t|M)zJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R_-.:n%.z  
*/ #PiW\Tq  
public void sort(int[] data) { D;Z\GnD  
int temp; v"^G9u  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1(-)$m8}  
if(data[j] SortUtil.swap(data,j,j-1); :/u EPki  
} GhX>YzD7  
} TG!sck4/-Q  
} i# QI}r  
} Qml<JF  
w*aKb  
} lK{h%2A\b  
?@tp1?)  
选择排序: EayZ*e ]  
i`X/d=  
package org.rut.util.algorithm.support; ?(E$|A  
O5E\#*<K  
import org.rut.util.algorithm.SortUtil; Obbjl@]  
`}18A.K  
/** m'Ran3rp  
* @author treeroot 7%C6gU!r  
* @since 2006-2-2 zh7NXTzyf  
* @version 1.0 O}2;>eH  
*/ _/hWzj=q  
public class SelectionSort implements SortUtil.Sort { oh|Q&R  
&kh-2#E  
/* PKmr5FB  
* (non-Javadoc) 6m?}oMz  
* w?Y;pc}1B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Py K)ks!6  
*/ q5Z]Z.%3O  
public void sort(int[] data) { y4+Km*am,W  
int temp; H|5\c=  
for (int i = 0; i < data.length; i++) { | X! d*4  
int lowIndex = i; x:GuqE  
for (int j = data.length - 1; j > i; j--) { Nv w'[?m  
if (data[j] < data[lowIndex]) { /alJN`g  
lowIndex = j; ).5$c0`U&  
} ;~F&b:CyG  
} ApR>b%  
SortUtil.swap(data,i,lowIndex); T=%,^  
} TF2'-"2Y  
} zW8rC!  
&Yb!j  
} )17CG*K1  
'Y `or14E  
Shell排序: M] 7#  
@X5F$=aqZr  
package org.rut.util.algorithm.support; NH~\kV  
H[S[ y  
import org.rut.util.algorithm.SortUtil; 9Zw{MM]  
opqY@>Vh&  
/** 9vZ:oO  
* @author treeroot Lh\ 1L  
* @since 2006-2-2 db#svj*  
* @version 1.0 pr-=<[ d  
*/ -c4g;;%  
public class ShellSort implements SortUtil.Sort{ {9B"'65o  
~xCv_u^=  
/* (non-Javadoc) ma TQ 0GX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }JI@f14  
*/ ]-g9dV_[>j  
public void sort(int[] data) { XtCG.3(LY  
for(int i=data.length/2;i>2;i/=2){ \:y oS>G  
for(int j=0;j insertSort(data,j,i); 6--t6>5  
} mUA!GzJ~u-  
} M47t(9krV  
insertSort(data,0,1); lWPh2k  
} [8jIu&tJf  
[eLMb)n  
/** #;D@`.#\  
* @param data O#Ma Z.=  
* @param j 6U9F vPJ  
* @param i X~g U$  
*/ /#}o19(-d  
private void insertSort(int[] data, int start, int inc) { )sN}ClgJ  
int temp; iVT)V>Up  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tJ$gH;  
} $:|?z_@  
} #?"^:,Y  
} |W*#N8I P  
Y6G`p  
} 0@yw#.j  
+?)R}\\  
快速排序: l=UXikx  
YJGP8  
package org.rut.util.algorithm.support; G4rd<V0[D  
(}m2}  
import org.rut.util.algorithm.SortUtil; [nA1WFfM  
Cz|F%>y#  
/** @.)WS\Cv#E  
* @author treeroot &yRR!1n)H  
* @since 2006-2-2 fG zx;<0P!  
* @version 1.0 dWTc3@xd  
*/ / %1-tGh  
public class QuickSort implements SortUtil.Sort{ J\Db8O-/x4  
X2T_}{  
/* (non-Javadoc) NY?pvb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <!=:{&d%  
*/ '>cZ7:  
public void sort(int[] data) { > -,$  
quickSort(data,0,data.length-1); XTJA"y  
} <ivq}(%72  
private void quickSort(int[] data,int i,int j){ `m}G{jfk  
int pivotIndex=(i+j)/2; ^+w1:C5  
file://swap vddl9"V)  
SortUtil.swap(data,pivotIndex,j); Q[c:A@oW  
Vkf c&+  
int k=partition(data,i-1,j,data[j]); Th X6e  
SortUtil.swap(data,k,j); !5 ?<QKOe  
if((k-i)>1) quickSort(data,i,k-1); F9k}zAY\J  
if((j-k)>1) quickSort(data,k+1,j); iD.p KG  
Rrrq>{D  
} ):\+%v^  
/** (%'`t(<  
* @param data #+H3b!8=  
* @param i >}B53.;.k  
* @param j d ATAH}r&  
* @return F. I\?b  
*/ #y'p4Xf  
private int partition(int[] data, int l, int r,int pivot) { v6H!.0  
do{ s<;{q+1#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Yfx?3  
SortUtil.swap(data,l,r); nub!*)q  
} 0v#p4@Z  
while(l SortUtil.swap(data,l,r); {11 3B)  
return l; 3:<[;yo  
} dt0(04  
Gzp*Vr  
} g'Wr+( A_  
)Y`ybADd3  
改进后的快速排序: <kJ`qbOU  
j )wrF@W  
package org.rut.util.algorithm.support; ~Rx`:kQ  
dkW7k^g  
import org.rut.util.algorithm.SortUtil; : )y3 &I  
QRx9;!~b}  
/** ]x66/O\0u  
* @author treeroot ps^["3e  
* @since 2006-2-2 .@\(ay  
* @version 1.0 +Ht(_+To1  
*/ (:^YfG~e  
public class ImprovedQuickSort implements SortUtil.Sort { Rp!"c  
ol~ tfS  
private static int MAX_STACK_SIZE=4096; <?:h(IZe[  
private static int THRESHOLD=10; d6ifJ  
/* (non-Javadoc) XtE O)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $ nMx#~>a  
*/ aU/y>Y <k  
public void sort(int[] data) { ?BbEQr  
int[] stack=new int[MAX_STACK_SIZE]; !=HxL-`j  
wc#k@"2AZb  
int top=-1; &XW ~l>!+  
int pivot; gB>AYL%o=  
int pivotIndex,l,r; ^Nt^.xi7  
%TO&  
stack[++top]=0; #bCUI*N"P  
stack[++top]=data.length-1; ,Xg^rV~]  
p}JGx^X ~  
while(top>0){ -X3CrW  
int j=stack[top--]; O_ vH w^  
int i=stack[top--]; TW wE3{iF  
(!?%"e  
pivotIndex=(i+j)/2; PP/#Z~.M  
pivot=data[pivotIndex]; X5-[v(/]  
Nfv` )n@  
SortUtil.swap(data,pivotIndex,j); 6G(K8Q{>  
wa!z:}]  
file://partition ulk/I-y  
l=i-1; ,zdK%V}  
r=j; oTr,zRL  
do{ CYsLyk  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %s;5  
SortUtil.swap(data,l,r); s2F[v:|Wq  
} /XNC^!z6Js  
while(l SortUtil.swap(data,l,r); -S&d5(R  
SortUtil.swap(data,l,j); Zqv  
yTNHM_P  
if((l-i)>THRESHOLD){ B,` `2\B  
stack[++top]=i; N7GZ'-t^Er  
stack[++top]=l-1; Hd TB[(  
} b8[ ayy  
if((j-l)>THRESHOLD){ sxdDI?W4  
stack[++top]=l+1; ma/<#l^}  
stack[++top]=j; r=xec@R]*  
} ys:F  
)`2ncb   
} e`+ej-o,  
file://new InsertSort().sort(data); `Gx 5=Bm;  
insertSort(data); |oQhtk8.  
} m 0Uu2Z4  
/** p^Z|$aZZ  
* @param data [.$/o}  
*/ VMS3Q)Ul  
private void insertSort(int[] data) { A;e"_$yt8  
int temp; `=kiqF2P}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I]cZcx,<q  
} l[<o t9P[  
} l*Fp}d.  
} rT[b ^l}  
fP- =wd  
} .Q{VY]B^  
uLfk>&hc  
归并排序: FuAs$;  
i?V:+0#q\]  
package org.rut.util.algorithm.support; |O'gT8  
yNG|YB;  
import org.rut.util.algorithm.SortUtil; 5 o[E8c 8  
Zeq^dV5y77  
/** \Hq=_}]F  
* @author treeroot ^* CKx  
* @since 2006-2-2 p  S|  
* @version 1.0 Xi~I<&  
*/ w}M)]kY  
public class MergeSort implements SortUtil.Sort{ K.}jyhKIKi  
4tvZJS hV  
/* (non-Javadoc) :c(I-xif  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ] pv!Ll  
*/ ]4'V59\  
public void sort(int[] data) { q4vHsy36  
int[] temp=new int[data.length]; '$4&q629d  
mergeSort(data,temp,0,data.length-1); OLGMy5  
} @Y ?p-&  
5kHU'D  
private void mergeSort(int[] data,int[] temp,int l,int r){ VkId6k:>6C  
int mid=(l+r)/2; M"Z/E>ne  
if(l==r) return ; DD6K[\  
mergeSort(data,temp,l,mid); E{\T?dk1$  
mergeSort(data,temp,mid+1,r); DweF8c  
for(int i=l;i<=r;i++){ UnyJD%a  
temp=data; TXbi>t:/S{  
} C?<[oQb#  
int i1=l; f'tQLF[r<  
int i2=mid+1; Z}IuR|=  
for(int cur=l;cur<=r;cur++){ Y$fF"p G?  
if(i1==mid+1) 1C/Vwf:@  
data[cur]=temp[i2++]; 7{VN27Fa_  
else if(i2>r) %+(fdk-k+  
data[cur]=temp[i1++]; $_|jI ^  
else if(temp[i1] data[cur]=temp[i1++]; ZfS"  
else   [ L  
data[cur]=temp[i2++]; sD6vHX%  
} MB6lKLy6~  
} #9A*BbY  
@-ir  
} ;Wn0-`_1,  
xo(>nFjo  
改进后的归并排序: WpkCFp  
Hx9lQ8  
package org.rut.util.algorithm.support; @[5]?8\o  
GwG(?_I"  
import org.rut.util.algorithm.SortUtil; MEtKFC|p  
]XWtw21I1  
/** D/z*F8'c  
* @author treeroot &}0#(Fa`  
* @since 2006-2-2 )>pIAYCVP  
* @version 1.0 D e$K  
*/ )$O'L7In&  
public class ImprovedMergeSort implements SortUtil.Sort { 3)l<'~"z<  
o%h[o9i  
private static final int THRESHOLD = 10; #BI6+rfv|  
Q:]v4 /MT  
/* }dEf |6_  
* (non-Javadoc) Slp_o\s$@  
* 4EhWK;ra  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I=k`VId:  
*/ |jKFk.M  
public void sort(int[] data) { 2p*L~! iM  
int[] temp=new int[data.length]; n,p \~Tu,  
mergeSort(data,temp,0,data.length-1); U.ew6`'Te  
} C-(O*hK  
)r XUJ29.  
private void mergeSort(int[] data, int[] temp, int l, int r) { <fDbz1Q;l  
int i, j, k; G%%5lw!y'  
int mid = (l + r) / 2; f/Q/[2t  
if (l == r) u TmT'u:}  
return; `t7GYmw^#  
if ((mid - l) >= THRESHOLD) |W SvAM3  
mergeSort(data, temp, l, mid); ?u{D-by%&  
else f%%'M.is  
insertSort(data, l, mid - l + 1); D)eRk0iC  
if ((r - mid) > THRESHOLD) # tU@\H5kN  
mergeSort(data, temp, mid + 1, r); sw,p6T[  
else 9n3.Ar  
insertSort(data, mid + 1, r - mid); djDE0-QxcR  
g7K<"Z {M  
for (i = l; i <= mid; i++) { Jx8DVjy  
temp = data; Z}>+!Z  
} )2b bG4:N  
for (j = 1; j <= r - mid; j++) { >UV=k :Q  
temp[r - j + 1] = data[j + mid]; B\>3[_n  
} _9z+xl  
int a = temp[l]; Fz]!2rt  
int b = temp[r]; M:%Ll3  
for (i = l, j = r, k = l; k <= r; k++) { B,A\/%<  
if (a < b) { '~pZj"uy  
data[k] = temp[i++]; ^!K 8nW{*  
a = temp; E{'\(6z_  
} else { (=tu~ ^  
data[k] = temp[j--]; 8qs8QK  
b = temp[j]; rU7t~DKS  
} 9|>5;Ej  
} T{Yk/Z/}?  
} *35o$P46  
wtfM }MW\  
/** D!bi>]Yd  
* @param data <-!' V,c  
* @param l )umW-A  
* @param i h6e,w$IL  
*/ :a M@"#F  
private void insertSort(int[] data, int start, int len) { nY?X@avo>  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); dg;E,'e_ p  
} P~@I`r567  
} 'WoB\y569  
} P1"g62R  
} 9~}8?kPNw=  
/O$)m[  
堆排序: SqT+rvTh  
fXAD~7T*s  
package org.rut.util.algorithm.support; HjX)5@"o(  
* Vymb  
import org.rut.util.algorithm.SortUtil; &- ZRS/_d>  
C] |m|`  
/** $)7Af6xD  
* @author treeroot |bjLmGb  
* @since 2006-2-2 ,jMV # H[  
* @version 1.0 g)iw.M2  
*/ 4?~Ei[KgQn  
public class HeapSort implements SortUtil.Sort{ d6"B_,*b  
E>qehs,g  
/* (non-Javadoc) cONfHl{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ` aaT #r  
*/ .%mjE'  
public void sort(int[] data) { i-&"1D[&  
MaxHeap h=new MaxHeap(); *q(HW  
h.init(data); L9 H.DNA  
for(int i=0;i h.remove(); A|P `\_  
System.arraycopy(h.queue,1,data,0,data.length); b'4r5@GO  
} Td![Id  
20mZ{_%  
private static class MaxHeap{ jp-]];:aPJ  
uszMzO~  
void init(int[] data){ aB4L$M8x  
this.queue=new int[data.length+1]; axd9b,  
for(int i=0;i queue[++size]=data; K.\-  
fixUp(size); )jN fQ!?/  
} edh<L/%D  
} '5n=tRx  
JLV?n,nF  
private int size=0; NKw}VW'|  
OGU#%5"<  
private int[] queue; lV2MRxI  
)1]LoEdm`  
public int get() { h3kBNBI )  
return queue[1]; =|bW >y  
} eR5+1b  
nB86oQ/S  
public void remove() { 1V1T1  
SortUtil.swap(queue,1,size--); !)'|Y5 o  
fixDown(1); 69/qH_Y  
} $6\W8v  
file://fixdown zGE{Z A  
private void fixDown(int k) { ?C9>bKo*2H  
int j; }#U3vMx(  
while ((j = k << 1) <= size) { dLTA21b#  
if (j < size %26amp;%26amp; queue[j] j++; \)9R1zp/x  
if (queue[k]>queue[j]) file://不用交换 &SK=ZOKg^  
break; CI,xp  
SortUtil.swap(queue,j,k); Q*AgFF%wn  
k = j; T 9?!.o  
} VEg/x z4c  
} @5(HRd  
private void fixUp(int k) { _k.gVm  
while (k > 1) { 60Obek`  
int j = k >> 1; M;qV% k  
if (queue[j]>queue[k]) 1Du9N[2'P  
break; j<* `?V^  
SortUtil.swap(queue,j,k); L\UM12  
k = j; <x2 F5$@  
} 5Ai$1'*p  
} JSm3ZP|GqJ  
k~b8=$  
} QYTwGThWR  
U9p^?\-=  
} _ a,XL<9I  
B 9AE*  
SortUtil: Sf0[^"7  
:7Q, `W9  
package org.rut.util.algorithm; |qsY0zx  
o] 7U;W  
import org.rut.util.algorithm.support.BubbleSort; R!LKGiN  
import org.rut.util.algorithm.support.HeapSort; ss>?fyA  
import org.rut.util.algorithm.support.ImprovedMergeSort; abM4G  
import org.rut.util.algorithm.support.ImprovedQuickSort; Y_<(~eN`  
import org.rut.util.algorithm.support.InsertSort; )z?Kq0  
import org.rut.util.algorithm.support.MergeSort; T3 k#6N.  
import org.rut.util.algorithm.support.QuickSort; mF !=H%  
import org.rut.util.algorithm.support.SelectionSort; CiGN?1|  
import org.rut.util.algorithm.support.ShellSort; 3 ,?==?  
Aw *:5I[  
/** k)R>5?_  
* @author treeroot k|}S K9  
* @since 2006-2-2 "A?_)=zZ  
* @version 1.0 '%"#]  
*/ p,w6D,h  
public class SortUtil { D`^9 u K  
public final static int INSERT = 1; ?V&[U  
public final static int BUBBLE = 2; O(E-ox~q  
public final static int SELECTION = 3; sIJ37;ZA  
public final static int SHELL = 4; ;"/ "  
public final static int QUICK = 5; [0G>=h@u  
public final static int IMPROVED_QUICK = 6; +2ih!$T;7>  
public final static int MERGE = 7; I"=XM   
public final static int IMPROVED_MERGE = 8; /aB9pD+%  
public final static int HEAP = 9; O}3M+  
%7?v='s=  
public static void sort(int[] data) { $wn "+wX  
sort(data, IMPROVED_QUICK); 4q<:% 0M|  
} X7]vXo*  
private static String[] name={ ,uP1U@Cas  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =>CrZ23B "  
}; h D/b O  
~U~4QQV  
private static Sort[] impl=new Sort[]{ ?%HtPm2< %  
new InsertSort(), qEpP%p  
new BubbleSort(), IczEddt@'  
new SelectionSort(), ?D6rFUs9;  
new ShellSort(), Pz"!8b-MN  
new QuickSort(), y|X\f!  
new ImprovedQuickSort(), E 2DTE  
new MergeSort(), KV0e^c;  
new ImprovedMergeSort(), \(LHcvbb  
new HeapSort() F#^.L|d4  
}; ;D[b25  
jL)aU> kN  
public static String toString(int algorithm){ 5\tYs=>b<  
return name[algorithm-1]; yXw xq(32  
} BI=Ie?  
mlgdwM  
public static void sort(int[] data, int algorithm) { n6nwda  
impl[algorithm-1].sort(data); F77[fp  
} XI,F^K  
qD4e] 5  
public static interface Sort { ^dP@QMly6  
public void sort(int[] data); R#bg{|  
} o=_4v ^  
<..%@]+  
public static void swap(int[] data, int i, int j) { GKPqBi[rO  
int temp = data; /kVy#sT|  
data = data[j]; ?lU]J]  
data[j] = temp; y\ @;s?QL  
} ASaG }h  
} !U/: !e`N  
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