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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。 2$o#b .  
插入排序: .]H/u "d  
%+ nM4)h  
package org.rut.util.algorithm.support; M]|]b-#  
Y<IuwS  
import org.rut.util.algorithm.SortUtil; Q;N)$Xx  
/** : t9sAD  
* @author treeroot h<V,0sZ&:  
* @since 2006-2-2 o|u4C{j  
* @version 1.0 G1-r$7\  
*/ IL:[0q  
public class InsertSort implements SortUtil.Sort{ Oq$-*N  
6 .9C 4  
/* (non-Javadoc) d~MY z6"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |"PS e~ u  
*/ GSs?!BIC  
public void sort(int[] data) { V?Q45t Ae  
int temp; 4X",:B}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ])G| U A.  
} qzNXz_#+u  
} ySI}Nm>&=  
} A;5_/ 2  
H s$HeAp;  
} 15VvZ![$V  
_u""v   
冒泡排序: ,na}' A@a`  
yN)(MmX'1  
package org.rut.util.algorithm.support; )3A+Ell`  
eIy:5/s  
import org.rut.util.algorithm.SortUtil; fs yVu|G  
w_V A:]j4  
/** s$zm)y5  
* @author treeroot Y4w]jIv  
* @since 2006-2-2 Yn$: |$  
* @version 1.0 JB%_&gX)v  
*/ MLlvsa0  
public class BubbleSort implements SortUtil.Sort{ & kVa*O  
Qn|8Ic` *  
/* (non-Javadoc) ~Ad2L*5S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !4`:(G59  
*/ }z#M!~  
public void sort(int[] data) { Q>$lf.)  
int temp; 1ni72iz\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ urE7ZKdI  
if(data[j] SortUtil.swap(data,j,j-1); H5#]MOAP  
} t*; KxQ+'?  
} am !ssF5s  
} 2D:,(  
} H)h^|A/vO  
7x77s  
} `\|@w@f|;  
Nmd{C(^o  
选择排序: St(jrZb  
$&qLr KJ  
package org.rut.util.algorithm.support; B|V!=r1%  
r\#nBoo(  
import org.rut.util.algorithm.SortUtil; ZXL'R |?  
gG@4MXq.  
/** ?w!8;xS8  
* @author treeroot Yyar{$he  
* @since 2006-2-2 8ki3>"!A  
* @version 1.0 mR|5$1[b  
*/ 4!OGNr$V@  
public class SelectionSort implements SortUtil.Sort { pEz^z9  
WtKKdL  
/* ?&zi{N  
* (non-Javadoc) r7].48D  
* &SPY'GQ!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pH.&C 5kA  
*/ i-;#FT+ Xc  
public void sort(int[] data) { Cg?Mk6i  
int temp; M%la@2SK=  
for (int i = 0; i < data.length; i++) { l53Q"ajG  
int lowIndex = i; Ywv\9KL  
for (int j = data.length - 1; j > i; j--) { +."|Y3a  
if (data[j] < data[lowIndex]) { ?9O#b1f N  
lowIndex = j; %WKBd \O  
} y$bY 8L  
} $T#fCx/  
SortUtil.swap(data,i,lowIndex); L1I1SFG  
} YlUh|sK7m  
} 4X*U~}  
}apno|W&  
} 8X.= 6M  
XN6$TNsD$  
Shell排序: 1<Mb@t  
xo?'L&%  
package org.rut.util.algorithm.support; V=5S=7 Z:  
cr<j<#(Z}  
import org.rut.util.algorithm.SortUtil; Y3~z#<  
uYWgNNxdmo  
/** }y+Qj6dP  
* @author treeroot ZA. S X|m  
* @since 2006-2-2 j1qU 4#Y  
* @version 1.0 &zB>  
*/ ]Jm\k'u[  
public class ShellSort implements SortUtil.Sort{ u=qaz7E  
9d^m 7}2  
/* (non-Javadoc) J=78p#XUg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pnE]B0e  
*/ M ;b3- i  
public void sort(int[] data) { JFO,Q -y\  
for(int i=data.length/2;i>2;i/=2){ 4h_YVG]ur  
for(int j=0;j insertSort(data,j,i); #]5KWXC'~  
} q2J |koT  
} N>YSXh`W`y  
insertSort(data,0,1); ?;htK_E\*  
} `p9N| V  
V s xI  
/** 'I+M*Iy  
* @param data 4i{Xs5zk  
* @param j [e ztu9  
* @param i *P9"1K +  
*/ ,wM}h  
private void insertSort(int[] data, int start, int inc) { |a"]@W$>  
int temp; mjg@c|rTG  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]UEA"^  
} %qo.n v  
} J^CAQfcx  
} eR>8V8@  
b/qK/O8J  
} vdvnwzp!l  
Kr'?h'F  
快速排序: %Vltc4QU  
Yq51+\d  
package org.rut.util.algorithm.support; IO9|o!&>  
j;E$7QH[  
import org.rut.util.algorithm.SortUtil; &+@`Si=  
D iOd!8Y  
/** GVA%iE.  
* @author treeroot 1 eV&oN#  
* @since 2006-2-2 gJuK%P  
* @version 1.0 ?B;7J7T  
*/ 1U.X[}e  
public class QuickSort implements SortUtil.Sort{ ;92xSe"Ww  
fap]`P~#L  
/* (non-Javadoc) IAGY-+8e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mF~]P8  
*/ ]NBx5m+y@i  
public void sort(int[] data) { B0gD4MX/  
quickSort(data,0,data.length-1); @iV-pJ-  
} E9I08AODS  
private void quickSort(int[] data,int i,int j){ 2cQ~$  
int pivotIndex=(i+j)/2; 6lg]5d2CD  
file://swap r,.j^a  
SortUtil.swap(data,pivotIndex,j); EATVce]T  
#oa>Z.?_V  
int k=partition(data,i-1,j,data[j]); D8u`6/^  
SortUtil.swap(data,k,j); N9#xTX  
if((k-i)>1) quickSort(data,i,k-1); >KP,67  
if((j-k)>1) quickSort(data,k+1,j); x=xo9wEg  
c%hXj#;  
} L[9Kh&c  
/** R31Z(vY  
* @param data Yb<:1?76L  
* @param i { V(~  
* @param j "5k 6FV  
* @return *A8*FX>\F  
*/ &}Wi@;G]2  
private int partition(int[] data, int l, int r,int pivot) { 9M7P|Q  
do{ #yR&|*@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0\Jeyb2dl  
SortUtil.swap(data,l,r); "|dhmV[;  
} ?)(/SZC0  
while(l SortUtil.swap(data,l,r); ]o"E 4Vht  
return l; X[tB^`  
} #[x*0K-h  
0{ B<A^Bf  
} j2IK\~W?-  
BI-'&kPk  
改进后的快速排序: o[ks-C>jw  
k*6"!J%A  
package org.rut.util.algorithm.support; v@GhwL  
-(WRhBpw  
import org.rut.util.algorithm.SortUtil; 'v0rnIsI?  
T}msF  
/** N2}Y8aR~  
* @author treeroot ;qUB[Kw  
* @since 2006-2-2 ;T0X7MNx  
* @version 1.0 ^&mrY[;S  
*/ H.>EO&#|p  
public class ImprovedQuickSort implements SortUtil.Sort { vxk0@k_  
U _A'/p^D  
private static int MAX_STACK_SIZE=4096; vdgK3I  
private static int THRESHOLD=10; _6c/,a8;*J  
/* (non-Javadoc) B@ufrQ#Y.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z a_0-G%C2  
*/ Tq )hAZ  
public void sort(int[] data) { \}.bTca  
int[] stack=new int[MAX_STACK_SIZE]; W$,/hB& z  
`W+-0F@Y?@  
int top=-1; bfncO[Q,?  
int pivot; `S-l.zSZ4B  
int pivotIndex,l,r; hg0{x/Dgny  
x`C"Z7t  
stack[++top]=0; _6h.<BR  
stack[++top]=data.length-1; Hik=(pTu>  
oLX[!0M^  
while(top>0){ t>N2K-8Qh  
int j=stack[top--]; T+B-R\@t  
int i=stack[top--]; qyVARy  
%B#T"=Cx  
pivotIndex=(i+j)/2; 1QD49)  
pivot=data[pivotIndex]; 6XZjZ*)W  
H{N},B  
SortUtil.swap(data,pivotIndex,j); XY? Cl  
fB7Jx6   
file://partition MS#*3Md&y  
l=i-1; nu1XT 1q1  
r=j; Xr8fmJtg'  
do{ 3J 5,V  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T*#M'H7LSQ  
SortUtil.swap(data,l,r); 0nD?X+u  
} >\:GFD{z  
while(l SortUtil.swap(data,l,r); xq,ql@7  
SortUtil.swap(data,l,j); rA?< \*  
]v>[r?X#V  
if((l-i)>THRESHOLD){ 6qTMHRI  
stack[++top]=i; T!9AEG  
stack[++top]=l-1; B?^~1Ua9Zv  
} J;wBS w%1  
if((j-l)>THRESHOLD){ Q=DMfJ"  
stack[++top]=l+1; l"`VvW[  
stack[++top]=j; _e>N3fT  
} @VIY=qh  
wY%t# [T3  
} t@MUNW`Q  
file://new InsertSort().sort(data); 0`WFuFi^o  
insertSort(data); $n!5JS@40  
} z>,tP  
/** W(Sni[c{  
* @param data wM7 Iu86  
*/ Hq<4G:#  
private void insertSort(int[] data) { ,66(*\xT  
int temp; VR1]CN"G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sk 8DW  
} a;IOL  
} NV(jp'i~  
} "mE/t  (  
Rsq EAdZw[  
} kjsj~jwvv  
- (((y)!  
归并排序: ~Yl.(R  
TTa3DbFp%  
package org.rut.util.algorithm.support;  Rm)hgmZ  
/!t:MK;  
import org.rut.util.algorithm.SortUtil; DxN\ H"  
$iy!:Did  
/** y1}2hT0,  
* @author treeroot +IbV  
* @since 2006-2-2 8mdVh\i!Kf  
* @version 1.0 ?,v& o>*  
*/ G;wh).jG5  
public class MergeSort implements SortUtil.Sort{ N Czabl  
@@\px66  
/* (non-Javadoc)  HRbv%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _!,2"dS  
*/ XHKLl?-  
public void sort(int[] data) { V"K.s2U^  
int[] temp=new int[data.length]; `DSFaBj,  
mergeSort(data,temp,0,data.length-1);  gsi2  
} KTmwkZcfYD  
q)C Xu  
private void mergeSort(int[] data,int[] temp,int l,int r){ zx:;0Z:S6>  
int mid=(l+r)/2; 6+ptL-Zt<  
if(l==r) return ; c'VCCXe  
mergeSort(data,temp,l,mid); $>_`.*I/  
mergeSort(data,temp,mid+1,r); BT0;I  
for(int i=l;i<=r;i++){ Uj 4HVd  
temp=data; 1uKIO{d @  
} ,+h<qBsV@  
int i1=l; >jTiYJI_M  
int i2=mid+1; CXz9bhn<4  
for(int cur=l;cur<=r;cur++){ FcZ)^RQ4G  
if(i1==mid+1) reYIF*  
data[cur]=temp[i2++]; hMS:t(N{  
else if(i2>r) <liprUFsn  
data[cur]=temp[i1++]; A@d 2Ukv  
else if(temp[i1] data[cur]=temp[i1++]; Wql=PqF  
else vNdX  
data[cur]=temp[i2++]; N:pP@o  
} RZq_}-P,.c  
} (Lh!7g/0N  
eS4t0`kP  
} VE/m|3%t  
izl-GitP  
改进后的归并排序: Jc5Y Gj7  
N|@ tP:j  
package org.rut.util.algorithm.support; @Q nKaZ8jW  
}LX!dDuwA  
import org.rut.util.algorithm.SortUtil; 99'c\[fd'  
[K4 k7$  
/** .) %, R  
* @author treeroot ~^'t70 :D  
* @since 2006-2-2 ,+v(?5[6  
* @version 1.0 x@O )QaBN!  
*/ (Lj*FXmz  
public class ImprovedMergeSort implements SortUtil.Sort { ^j pQfDe6  
iDgc$'%?  
private static final int THRESHOLD = 10; -R];tpddR5  
G i(  
/* Cl& )#  
* (non-Javadoc) 4/3w *  
* \f Kn} ]kG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ei1;@k/  
*/ +5R8mbD!  
public void sort(int[] data) { n) HV:8j~  
int[] temp=new int[data.length]; 4XiQ8"C  
mergeSort(data,temp,0,data.length-1); %Y#W#G  
} q`z1ht nf  
fU%Mz\t  
private void mergeSort(int[] data, int[] temp, int l, int r) { wNFx1u^/)  
int i, j, k; >XuPg(Ow  
int mid = (l + r) / 2; }9z$72;Qdq  
if (l == r) Lq6nmjL  
return; ~SA>$  
if ((mid - l) >= THRESHOLD) bh\2&]Di/  
mergeSort(data, temp, l, mid); ;Tq4!w'rH  
else apM)$  
insertSort(data, l, mid - l + 1); [?,+DY  
if ((r - mid) > THRESHOLD) #\xy,C'Y  
mergeSort(data, temp, mid + 1, r); 4v5qK  
else SjA'<ZX>TM  
insertSort(data, mid + 1, r - mid); QiVKaBS8  
+yk0ez  
for (i = l; i <= mid; i++) { l;aO"_E1m  
temp = data; {m,LpI0wG  
} ]*)l_mut7  
for (j = 1; j <= r - mid; j++) { +>u 8r&Jw.  
temp[r - j + 1] = data[j + mid]; QJx<1#  
} #!yX2lR  
int a = temp[l]; .p'McCV=  
int b = temp[r]; [;D1O;c'W.  
for (i = l, j = r, k = l; k <= r; k++) { W_/$H_04+  
if (a < b) { hQ L@q7tUr  
data[k] = temp[i++]; +zo\#8*0MF  
a = temp; jzi^ OI7  
} else { Yyw3+3  
data[k] = temp[j--]; j#p3<V S4  
b = temp[j]; C4-%|+Q i  
} 9&B #@cw  
} qI74a F  
} Pum&\.l  
Y~#.otBL&  
/** w; f LnEz_  
* @param data 28}L.>5k  
* @param l mv$gL  
* @param i {Ov{O,c 5  
*/ &f)pU>Di  
private void insertSort(int[] data, int start, int len) { G/(tgQ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wI F'|"  
} n7n-uc  
} K}whqe]j  
} Rp_}_hL0  
} 0Uk;&a0s  
8f'r_,"  
堆排序: v.,D,6qZ  
1^WkW\9kO  
package org.rut.util.algorithm.support; LiGECqWBa'  
0NvicZ7VR  
import org.rut.util.algorithm.SortUtil; Z)u_2e  
+&M>J|  
/** x;STt3M~  
* @author treeroot 9r8bSV3`  
* @since 2006-2-2 a?W<<9]  
* @version 1.0 {G|= pM\'  
*/ H:16aaMn(  
public class HeapSort implements SortUtil.Sort{ .NF3dC\  
`'bu8JK  
/* (non-Javadoc) 1u }2}c|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uXG$YDKqC  
*/ sbhUW>%.  
public void sort(int[] data) { C,<FV+r=^  
MaxHeap h=new MaxHeap(); uCWBM  
h.init(data); [raj: 7yQ  
for(int i=0;i h.remove(); S\k(0Sv9D  
System.arraycopy(h.queue,1,data,0,data.length); _.W;hf`  
} h}oV)z6  
%;GRR (K  
private static class MaxHeap{ #Qu|9Q[QH  
+ul.P)1J6  
void init(int[] data){ ,C'mE''x  
this.queue=new int[data.length+1]; `yRt?UQRS  
for(int i=0;i queue[++size]=data; rPifiLl A>  
fixUp(size); R!x /,6,_  
} PnI_W84z  
} +' .o  
{Sc*AE&Y  
private int size=0; .SWn/Kk  
OZ<fQf.Gh}  
private int[] queue; B/JMH 1r  
MBol_#H  
public int get() {  O&dh<  
return queue[1]; W#x~x|(c  
} HJe6h. P  
Fa X3@Sd!  
public void remove() { 0v3 8LBH)  
SortUtil.swap(queue,1,size--); '|yBz1uL  
fixDown(1); j 4(f1  
} VY!A]S"  
file://fixdown _Vt CC/  
private void fixDown(int k) { ^/$U(4  
int j; 2(9~G|C.  
while ((j = k << 1) <= size) { 07,&weQ  
if (j < size %26amp;%26amp; queue[j] j++; "haJwV6-  
if (queue[k]>queue[j]) file://不用交换 T&E'MB  
break; &w^:nVgl  
SortUtil.swap(queue,j,k); #<-%%  
k = j; *Oh]I|?  
} ;,@Fz  
} YJZ`Clp?  
private void fixUp(int k) { AnBD~h h  
while (k > 1) { +3R/g@n  
int j = k >> 1; _U~~[I  
if (queue[j]>queue[k]) &&sm7F%  
break; {>X2\.Rl  
SortUtil.swap(queue,j,k); q9$K.=_5  
k = j; (^)(#CxO  
} };>~P%u32  
} <EuS6Pg  
8;(3fSNC  
} ]_! . xx>  
Lhxg5cd  
} &?APY9\.  
d!4:nvKx  
SortUtil: DC'L-]#<  
9u_D@A"aC`  
package org.rut.util.algorithm; G4n-}R&'  
ebf/cC h  
import org.rut.util.algorithm.support.BubbleSort; F||oSJrI  
import org.rut.util.algorithm.support.HeapSort; G=KXA'R)1.  
import org.rut.util.algorithm.support.ImprovedMergeSort; TJ0;xn6o  
import org.rut.util.algorithm.support.ImprovedQuickSort; >ZnnGX6$(  
import org.rut.util.algorithm.support.InsertSort; N >];xb>  
import org.rut.util.algorithm.support.MergeSort; qoC<qn{.a  
import org.rut.util.algorithm.support.QuickSort; 8+&Da  
import org.rut.util.algorithm.support.SelectionSort; D [K!xq  
import org.rut.util.algorithm.support.ShellSort; edfb7prfTl  
mf gUf  
/** lnrs4s Km  
* @author treeroot =n_>7@9l  
* @since 2006-2-2 &^F'ME  
* @version 1.0 !<5Wi)*  
*/ 4 :M}Vz-  
public class SortUtil { Ce@"+k+w  
public final static int INSERT = 1; kSjvY&n%  
public final static int BUBBLE = 2; B[7Fq[.mh  
public final static int SELECTION = 3; @F!oRm5  
public final static int SHELL = 4; _Q\<|~  
public final static int QUICK = 5; ] N7(<EV/  
public final static int IMPROVED_QUICK = 6; eeOG(@@o(  
public final static int MERGE = 7; M4L<u,\1s  
public final static int IMPROVED_MERGE = 8; yOm#c>X  
public final static int HEAP = 9; sbq:8P#  
\|R\pS}4  
public static void sort(int[] data) { k6|/ik9C  
sort(data, IMPROVED_QUICK); 7,R ~2ss5z  
} na] 9-~4  
private static String[] name={ =O~Y6|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" s[u*~A  
}; U %aDkC+M  
RnUud\T/  
private static Sort[] impl=new Sort[]{ hJ*#t<.<P;  
new InsertSort(), >d^DN;p  
new BubbleSort(), d PF*G$  
new SelectionSort(), .2*h!d)E  
new ShellSort(), #UqE %g`J  
new QuickSort(), 2;ac&j1  
new ImprovedQuickSort(), &MJ`rj[%  
new MergeSort(), J!5&Nc  
new ImprovedMergeSort(), #} `pj}tQ  
new HeapSort() n6#z{,W<3  
}; Ak,T{;rD  
wl%I(Cw{]  
public static String toString(int algorithm){ B3&ETi5NTU  
return name[algorithm-1]; S+-V16{i  
} X;yThb` iI  
SM[VHNr,-  
public static void sort(int[] data, int algorithm) { lxtt+R  
impl[algorithm-1].sort(data); 0 TOw4pC  
} &B} ,xcNO  
'17V7A/t  
public static interface Sort { Qa,$_ ,E  
public void sort(int[] data); jFwJ1W;?-  
} vk|xYDD  
Gs(;&fw  
public static void swap(int[] data, int i, int j) { /*m6-DC  
int temp = data; (*V:{_r  
data = data[j]; H:,Hr_;nC  
data[j] = temp; FLaj|Z~#)  
} wRe2sjM  
} Ca#T?HL  
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3+5=?,请输入中文答案:八 正确答案:八