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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。 y*US^HJOZ  
插入排序: $% gz, {  
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package org.rut.util.algorithm.support; :$PrlE  
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import org.rut.util.algorithm.SortUtil; "5sA&^_#_  
/** }Ya! [tX  
* @author treeroot Z 5)v  
* @since 2006-2-2 }:;UnE}  
* @version 1.0 4*5e0:O  
*/ 3?L[ohKH?:  
public class InsertSort implements SortUtil.Sort{ ?d{O' &|:  
'RzO`-dr  
/* (non-Javadoc) cx&\oP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;'08-Et  
*/ /;1O9HJa  
public void sort(int[] data) { tLq]#9kL  
int temp; W|uRQA`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8c_X`0jy  
} vH1,As  
} u^CL }t*  
} ^3H:I8gRCl  
M5t.l (  
} T:H~Y+qnt  
J]{<Z?%  
冒泡排序: dga4|7-MY  
#d/T7c#  
package org.rut.util.algorithm.support; 1,Mm+_)B  
{&B_b|g*fW  
import org.rut.util.algorithm.SortUtil; MuP>#Vk  
=l${p*ABQ  
/** ]*lZFP~  
* @author treeroot k.o8!aCm  
* @since 2006-2-2 *FZav2]-  
* @version 1.0 /`DKX }  
*/ y@1QVt04  
public class BubbleSort implements SortUtil.Sort{ d!Gy#<H  
g;6/P2w  
/* (non-Javadoc) n]D io  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J[hmY=,  
*/ O"\_%=X9  
public void sort(int[] data) { M"/Jn[  
int temp; ABkDOG2br  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %Q &']  
if(data[j] SortUtil.swap(data,j,j-1); bDJ!Fc/  
} L=EkY O%\"  
} H>;,r ,  
} gW--[  
} % -AcA  
~_N,zw{x  
} ?E|=eO"I1  
Fw{@RQf8  
选择排序: 5p S$rf  
F8{gJaP x  
package org.rut.util.algorithm.support; |)Dm.)/0)  
/Wjc\n$'  
import org.rut.util.algorithm.SortUtil; K\XQ E50  
UI U:^g0  
/** Qj_)^3`e  
* @author treeroot &|ne!wu  
* @since 2006-2-2 a3\~AO H%  
* @version 1.0 jQ%1lQ#R)  
*/ a{^z= =  
public class SelectionSort implements SortUtil.Sort { U:n~S  
M:%g)FgW  
/* lnyq%T[^  
* (non-Javadoc) qK#"uU8B  
* <3@nv%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?hc=w2Ci  
*/ 6'/ Zq  
public void sort(int[] data) { xZ;eV76  
int temp; F9K`N8wlu  
for (int i = 0; i < data.length; i++) { "U4c'iW  
int lowIndex = i; hLgX0QV  
for (int j = data.length - 1; j > i; j--) { QK0]9   
if (data[j] < data[lowIndex]) { y] D\i5Xv  
lowIndex = j; wzwv>@}  
} d$bO.t5CLh  
} tugIOA  
SortUtil.swap(data,i,lowIndex); |^UQVNJ  
} /4 pYhJ8S  
} SH=S>  
3?"gfw W  
} #TR!x,Hc  
\:1$E[3v  
Shell排序: p.g>+7  
mIYKzu_k=  
package org.rut.util.algorithm.support; $#s5y~z  
=CD6x= l6  
import org.rut.util.algorithm.SortUtil; Tr:@Dv.O  
i*mU<:t  
/** ej kUNCKQt  
* @author treeroot =UK:83R(  
* @since 2006-2-2 s-Yu(X2  
* @version 1.0 E.NfVeq  
*/ _zM?"16I}  
public class ShellSort implements SortUtil.Sort{ H@wjZ;R  
NJr)f  
/* (non-Javadoc) 'R+^+urq^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K3 BWj33  
*/ "'Fvt-<^S7  
public void sort(int[] data) { ,pTZ/#vP#  
for(int i=data.length/2;i>2;i/=2){ F#<:ZByjJ@  
for(int j=0;j insertSort(data,j,i); _oBx:G6E  
} Khi6z&B  
} ~b)X:ku  
insertSort(data,0,1); sgK =eBE  
} WeH_1$n5  
!BkE-9v?w  
/** sB *dv06b0  
* @param data H'YKj'  
* @param j N-F&=u}  
* @param i ,WOCG 2h  
*/ URm<Ji  
private void insertSort(int[] data, int start, int inc) { RbxQTM_:M  
int temp; fmv:vs /9  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); I$+=Fb'N0  
} "OI$PLK  
} Hi K+}?I  
} L7rr/D  
wAi7jCY%OY  
} 6q>iPK Jt  
[&&#~gz  
快速排序: ^C^I  
]JGq{I>%+6  
package org.rut.util.algorithm.support; vS5}OV  
=*ErN  
import org.rut.util.algorithm.SortUtil; GR*sk#{  
)3e_H s+  
/** @(6i 1Iwu9  
* @author treeroot D Q={  
* @since 2006-2-2 {RI^zNgs[  
* @version 1.0 -b?M5P*:  
*/ #| g h  
public class QuickSort implements SortUtil.Sort{ >ZPu$=[W  
|;Jt * _  
/* (non-Javadoc) 8lqmd1v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y7 #+VF`xf  
*/ ,Q Ge=Exn  
public void sort(int[] data) { Px?"5g#+  
quickSort(data,0,data.length-1); ^2rj);{V  
} Ei]Sks V>*  
private void quickSort(int[] data,int i,int j){ I'{Ctc  
int pivotIndex=(i+j)/2; Vtj*O'0  
file://swap X~o;jJC  
SortUtil.swap(data,pivotIndex,j); v4rO 0y=C  
='kCY}dkO  
int k=partition(data,i-1,j,data[j]); j&S.k  
SortUtil.swap(data,k,j); [=cbzmX[  
if((k-i)>1) quickSort(data,i,k-1); $/Q\B(X3  
if((j-k)>1) quickSort(data,k+1,j); e&ZTRgYdi  
d<OdQvW.  
} OC,yLQ  
/** o\Fv~^  
* @param data G){+.X4g3  
* @param i %UooZO  
* @param j wt@TR~a  
* @return UjJ&P)  
*/ G1zP^ogk  
private int partition(int[] data, int l, int r,int pivot) { HXdo:#xEO  
do{ NhYUSk ~u  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [\Aws^fD_  
SortUtil.swap(data,l,r); 438r]f?0|{  
} O<>+l*bk  
while(l SortUtil.swap(data,l,r); D2 o|.e<r  
return l; }>,%El/  
} Ax@7RJ||  
<]oPr1  
} a.O"I3{?h  
9"B;o  
改进后的快速排序: "=40%j0  
D"fjk1  
package org.rut.util.algorithm.support; K!>3`[:I"  
6oq^n s-  
import org.rut.util.algorithm.SortUtil; NX;{L#lQ  
TOq xl  
/** f::^zAV  
* @author treeroot e+2lus,u6t  
* @since 2006-2-2 F$:mGyl5_  
* @version 1.0 drwxrZt   
*/ RJT55Rv{  
public class ImprovedQuickSort implements SortUtil.Sort { m^/>C -&C  
BTA2['  
private static int MAX_STACK_SIZE=4096; @ K2Ncb7  
private static int THRESHOLD=10; K6~')9 Q  
/* (non-Javadoc) Skux&'N:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NLgeBLB  
*/ )J[Ady^5  
public void sort(int[] data) { Xh~oDnP  
int[] stack=new int[MAX_STACK_SIZE]; dj6Lf  
iN@|08  
int top=-1; DuQ:82 3b  
int pivot; e6T?2`5P  
int pivotIndex,l,r; * _,yK-et  
t3Iij0b~  
stack[++top]=0; D2:ShyYAS  
stack[++top]=data.length-1; T Q {8 ee{  
EScy!p\*  
while(top>0){ $VxuaOTyVZ  
int j=stack[top--]; Z3Xgi~c  
int i=stack[top--]; WCI'Kh   
Y$3liDeL=  
pivotIndex=(i+j)/2; )B5U0iIi  
pivot=data[pivotIndex]; B=%YD"FAv  
yN}<l%  
SortUtil.swap(data,pivotIndex,j); .d4&s7n0  
Zl2doXC  
file://partition vZSwX@0  
l=i-1; v[m1R'  
r=j; @oMl^UYM=  
do{ 34vH+,!u  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Sa6YqOel@  
SortUtil.swap(data,l,r); KH[Oqd  
} D4+OWbf6  
while(l SortUtil.swap(data,l,r); 00A2[gO9  
SortUtil.swap(data,l,j); hN1{?PQ  
maQOU1  
if((l-i)>THRESHOLD){ 79M` ?xm  
stack[++top]=i; c5HW.3"  
stack[++top]=l-1; -EU~ %/=m+  
} !=+hU/e  
if((j-l)>THRESHOLD){ gf|&u4D  
stack[++top]=l+1; O@KAh5EB  
stack[++top]=j; Y{m1\s/o  
} (K> 4^E8  
#!M;4~Sfx  
} 5CM]-qbf@  
file://new InsertSort().sort(data); eN I6V/\`  
insertSort(data); hKp-"  
} zeHs5P8}r  
/** If.hA}  
* @param data ,W;2A0A?X  
*/ 2ISnWzq;  
private void insertSort(int[] data) { N%QVkuCbM  
int temp; ,N5-(W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '\Hh  
} y+a]?`2  
} \Ot,&Z k2  
} nSV OS6  
H9T'{R*FC  
} 'd=B{7k@  
k7Xa|&fQP<  
归并排序: l8ZzKb-  
Yf,U2A\  
package org.rut.util.algorithm.support; IH '&W  
VSa#X |z  
import org.rut.util.algorithm.SortUtil; HrQft1~N  
FOd)zU*L2  
/** xD<:'-ri>  
* @author treeroot `+Ojh>"*z*  
* @since 2006-2-2 2p|[yZ  
* @version 1.0 p_2-(n@  
*/ ]l4# KI@  
public class MergeSort implements SortUtil.Sort{ 1-60gI1)  
} ^67HtNQ  
/* (non-Javadoc) Vi1= E])  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7LY4q/  
*/ I= 'S).  
public void sort(int[] data) { !Wz%Hy:ZK  
int[] temp=new int[data.length]; zQQ=8#]  
mergeSort(data,temp,0,data.length-1); Fv"jKZPgzz  
} Ov=^}T4zl  
`-L{J0xq  
private void mergeSort(int[] data,int[] temp,int l,int r){ {  'Db  
int mid=(l+r)/2; c>%+y+b{  
if(l==r) return ; ~4fjFo&_\  
mergeSort(data,temp,l,mid); 'XHKhpm<  
mergeSort(data,temp,mid+1,r); &k4)&LQJ  
for(int i=l;i<=r;i++){ t)Mi,ljY[  
temp=data; yH0BNz8V  
} 'X$2gD3c9  
int i1=l; jKI0d+U  
int i2=mid+1; n2$(MDdL`  
for(int cur=l;cur<=r;cur++){ !!4` #Z0+#  
if(i1==mid+1) gE>_:s   
data[cur]=temp[i2++]; \.tnzP D  
else if(i2>r) ir%?J&C+t  
data[cur]=temp[i1++]; 2}P?N  
else if(temp[i1] data[cur]=temp[i1++]; P<@V  
else .6m%/-whS  
data[cur]=temp[i2++]; G92Ya^`  
} "Y Z B@  
} W9ZfD~(3-  
o0Y {k8  
} rG _T!']~  
O.%' 47A  
改进后的归并排序: '<.@a"DnJ  
  SW ^F  
package org.rut.util.algorithm.support; JlZU31Xws  
WxB}Uh  
import org.rut.util.algorithm.SortUtil; U=4tJb  
Yz?4eSa/  
/** Ydw04WEJ  
* @author treeroot cg-\|H1  
* @since 2006-2-2 =N5~iMorD-  
* @version 1.0 l cHqg  
*/ h <s.o#8  
public class ImprovedMergeSort implements SortUtil.Sort { x4&<Vr  
dy^Zlu` f  
private static final int THRESHOLD = 10; #Ont1>T,G  
9U[ A   
/* T( UPWsj  
* (non-Javadoc) e_Ue9c.}  
* dD Qx[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'rZYl Qm  
*/ k?%?EsR  
public void sort(int[] data) { umt*;U=  
int[] temp=new int[data.length]; <6_RWtU  
mergeSort(data,temp,0,data.length-1); tnv @`xBn  
} sYQ=nL  
?pS,?>J f  
private void mergeSort(int[] data, int[] temp, int l, int r) { noali96J  
int i, j, k; \uT2)X( N  
int mid = (l + r) / 2; 9~ [Sio~  
if (l == r) N,F mu  
return; 8T&.8r  
if ((mid - l) >= THRESHOLD) v{/z`J!JR  
mergeSort(data, temp, l, mid); f~HC%C YH  
else w}wABO  
insertSort(data, l, mid - l + 1); IY Ilab\TZ  
if ((r - mid) > THRESHOLD) &!|'EW  
mergeSort(data, temp, mid + 1, r); |\PI"rW  
else op\'T;xIu  
insertSort(data, mid + 1, r - mid); kj$Ks2!W  
(#uz_/xXa  
for (i = l; i <= mid; i++) { p$mx  
temp = data; KaEL*  
} :gD=F&V  
for (j = 1; j <= r - mid; j++) { MLbmz\8a  
temp[r - j + 1] = data[j + mid]; `x{*P.]N!<  
} 3`%]3qd}  
int a = temp[l]; ~F gxhK2+  
int b = temp[r]; )Z.v fc  
for (i = l, j = r, k = l; k <= r; k++) { ZDQc_{e{  
if (a < b) { FTVV+9.l:  
data[k] = temp[i++]; V7+fNr]I  
a = temp; TBAF_$  
} else { qK_jgj=w  
data[k] = temp[j--]; } D'pyTf[  
b = temp[j]; IE^xk@  
} E79'<;K,zs  
} %QYH]DR  
} 8h,>f#)0c  
3} Xf  
/** ]~YY#I":  
* @param data 9oe=*#Ig1m  
* @param l YadG05PDe  
* @param i 8@$`'h^6  
*/ dH5 Go9`~R  
private void insertSort(int[] data, int start, int len) { xtWwz}^8]  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,Y) 7M3I  
} >}"9heF  
} q(Q$lRj/I-  
} ] I&l0Fx  
}  ktA5]f;  
bR\Oyd~e  
堆排序: %0y_WIjz  
// k`X  
package org.rut.util.algorithm.support; 3Fu5,H EJ  
w \U?64  
import org.rut.util.algorithm.SortUtil; ><&>JgM  
ZC99/NWN  
/** ;4%Co)Rw  
* @author treeroot e+TSjm  
* @since 2006-2-2 v@&UTU  
* @version 1.0 ;h7W(NO~z  
*/ aVE/qXB  
public class HeapSort implements SortUtil.Sort{ D\4pLm"!v  
d,5,OJY2f  
/* (non-Javadoc)  X_\$hF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;%ng])w=;  
*/ X-_ $jKfM  
public void sort(int[] data) { G`oY(2U  
MaxHeap h=new MaxHeap(); _k|k$qxE  
h.init(data); Jv8JCu"eky  
for(int i=0;i h.remove(); )` ^/Dj;  
System.arraycopy(h.queue,1,data,0,data.length); Fd1t/B,  
} "XB6k 0.#  
<K:L.c!  
private static class MaxHeap{ W6A-/;S\  
-T8'|"g  
void init(int[] data){ Ai*+LSG  
this.queue=new int[data.length+1]; sqv!,@*q  
for(int i=0;i queue[++size]=data; <9/?+)  
fixUp(size); U>-GM >  
} ]=%oBxWAP  
} c!ul9Cw  
_, r6t  
private int size=0; tJa*(%Z?f  
 84g8$~M  
private int[] queue; 5L0w!q'W  
"<$JU@P  
public int get() { 0-~F%:x  
return queue[1]; r @URs;O=  
} -d]v6q'1  
3n)\D<f]#  
public void remove() { 9zD,z+  
SortUtil.swap(queue,1,size--); #GfM!<q<  
fixDown(1); )~{8C:  
} 9TU B3x^  
file://fixdown 68()2v4X  
private void fixDown(int k) { !F08F>@D  
int j; ,c&%/"i:w  
while ((j = k << 1) <= size) { n48%Uwa,  
if (j < size %26amp;%26amp; queue[j] j++; ,KaO8^PB  
if (queue[k]>queue[j]) file://不用交换 U}<'[o V  
break; >*1YL)DBT\  
SortUtil.swap(queue,j,k); xxZO{_q  
k = j; v VFT0_  
} }Sh3AH/  
} _ YcIG OL  
private void fixUp(int k) { bqwn_=.  
while (k > 1) { m+EtB6r  
int j = k >> 1; P0l.sVqL  
if (queue[j]>queue[k])  'EO"0,  
break; *lBX/O`=  
SortUtil.swap(queue,j,k); 3Lm7{s?=Z-  
k = j; D"<>! ]@(a  
} =GL^tAUJ  
} /& o<kY  
O6b.oS '-  
} bb!cZ >Z  
)E}eK-Yu  
} UJ^-T+fut  
Gf<%bQE  
SortUtil: 4Ep6vm X  
"vo o!&<  
package org.rut.util.algorithm; !U~S7h}  
!4}Wp.  
import org.rut.util.algorithm.support.BubbleSort;  <xwaFZ  
import org.rut.util.algorithm.support.HeapSort; ;*>':-4  
import org.rut.util.algorithm.support.ImprovedMergeSort; Df}3^J~JX  
import org.rut.util.algorithm.support.ImprovedQuickSort; 4=ZN4=(_[  
import org.rut.util.algorithm.support.InsertSort; w!/|aZ~*  
import org.rut.util.algorithm.support.MergeSort; wmaj[e,h  
import org.rut.util.algorithm.support.QuickSort; T%@qlEmf  
import org.rut.util.algorithm.support.SelectionSort; wQrD(Dv(yA  
import org.rut.util.algorithm.support.ShellSort; AxiCpAS;J  
AfJ.SNE  
/** vve[.Lud'  
* @author treeroot ZnRE:=  
* @since 2006-2-2 FfibR\dhY  
* @version 1.0 0r%,|FaS  
*/ ($s%B  
public class SortUtil { M%N_4j.  
public final static int INSERT = 1; {3N5Fi7S  
public final static int BUBBLE = 2; 3.?B')  
public final static int SELECTION = 3; FS6I?q#tQ  
public final static int SHELL = 4; z{G@t0q  
public final static int QUICK = 5; {>zQW{!  
public final static int IMPROVED_QUICK = 6; F1b~S;lm  
public final static int MERGE = 7; Q) Y&h'.(  
public final static int IMPROVED_MERGE = 8; =d1i<iw?-  
public final static int HEAP = 9; I.'sK9\Zp  
IjrjLp[z$  
public static void sort(int[] data) { ZsL-vlv  
sort(data, IMPROVED_QUICK); 'H)l~L  
} Yc~c(1VRz  
private static String[] name={ m| k:wuzqK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" b`X"yg+  
}; m; m4/z3U  
n Y=]KU  
private static Sort[] impl=new Sort[]{ F(+dX4$  
new InsertSort(),  -TKQfd  
new BubbleSort(), etLA F  
new SelectionSort(), O-YB +~"3Z  
new ShellSort(), O{44GB3  
new QuickSort(), h2fTG  
new ImprovedQuickSort(), P1}Fn:Xe%7  
new MergeSort(), PU{7s  
new ImprovedMergeSort(), 7d'gG[Z^^  
new HeapSort() 1F58 2 l  
}; cb9q0sdf  
AHtLkfr(r  
public static String toString(int algorithm){ eWwI@ASaA  
return name[algorithm-1]; *WX,bN6Ot  
} c!}f\ ]D  
>XiTl;UU  
public static void sort(int[] data, int algorithm) { _b1w<T `  
impl[algorithm-1].sort(data); UkV{4*E  
} Ah <6m5+  
97n@HL1  
public static interface Sort { qOd*9AS'|M  
public void sort(int[] data); ,6FmU$ Kn  
}  2t7Hu)V  
:D!}jN/)  
public static void swap(int[] data, int i, int j) { `VxfAV?}  
int temp = data; {=GWQn6cc  
data = data[j]; ^6[o$eY3  
data[j] = temp; |6}:n,KA.  
} 4)=\5wJDg1  
} 4,pSC  
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