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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。 +[ .Yy  
插入排序: as"N=\N  
tK%c@gGU9  
package org.rut.util.algorithm.support; <EO<x D=:  
FnHi(S|A  
import org.rut.util.algorithm.SortUtil; 8X?>=tl  
/** %G3sjnI;l  
* @author treeroot xeTgV&$@  
* @since 2006-2-2 l|/:Ot  
* @version 1.0 v$w++3H  
*/ eUO9 a~<  
public class InsertSort implements SortUtil.Sort{ m|svQ-/j  
R,@g7p  
/* (non-Javadoc) ?HHzQ4w%{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'q%%m/,VPQ  
*/ Ps R>V)L  
public void sort(int[] data) { G6`J1Uk  
int temp; V7t!?xOL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gd6Dm4q(  
} +1;'B4  
} dX )W0  
} /2NSZO  
'7I g.K&  
} }{],GHCjQ  
>E"9*:.^a  
冒泡排序: u2sR.%2U<  
rU#li0 >  
package org.rut.util.algorithm.support; t"s5\;IJ  
UU@fkk  
import org.rut.util.algorithm.SortUtil; 8}BBOD  
`Xo 4q3  
/** XY+y}D %  
* @author treeroot ?$%%Mp(  
* @since 2006-2-2 RB3 zHk%  
* @version 1.0 yi!`V.  
*/ "2Op[~V  
public class BubbleSort implements SortUtil.Sort{ p/]s)uYp$  
^lO76Dz~a  
/* (non-Javadoc) d$;/T('  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qu~*46?0  
*/ 2Ji+{,?,  
public void sort(int[] data) { E(L<L1:"  
int temp; Ttv9" z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;rBp1[qVe  
if(data[j] SortUtil.swap(data,j,j-1); +2T! z=  
} WtX>Qu|  
} ]HvZ$  
} [6g O  
} r[HT9  
w+f=RHX"{  
} G?V"SU.  
QD<eQsvV  
选择排序: KAb(NZK  
,{<p  
package org.rut.util.algorithm.support; YL5>V$i  
y @apJ;_R-  
import org.rut.util.algorithm.SortUtil; F!8=FTb  
^ @.G,u  
/** Gq]d:-7l  
* @author treeroot fA8ozL T  
* @since 2006-2-2 WD?Jk9_F  
* @version 1.0  wRVD_?  
*/ 30 7fBa  
public class SelectionSort implements SortUtil.Sort {  ^Omfe  
|f NMs  
/* |Cf mcz(56  
* (non-Javadoc) {j6g@Vd6lx  
* -i_En^Fi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zk>h u<_  
*/ |< N frz  
public void sort(int[] data) { NfF~dK|  
int temp; koH4~m{  
for (int i = 0; i < data.length; i++) { d=e{]MG(  
int lowIndex = i; .C5@QKU  
for (int j = data.length - 1; j > i; j--) { a c6*v49  
if (data[j] < data[lowIndex]) { ~Fx&)kegTo  
lowIndex = j; xv0M  
} 4r*Pa(;y  
} 5G? .T?  
SortUtil.swap(data,i,lowIndex); W/v|8-gcK  
} YsAF{  
} k|#Zy,  
,h!X k  
} aJ2H.E  
wD=am  
Shell排序: R$xY8+}V  
QGPR.<D)B  
package org.rut.util.algorithm.support; $Sb@zLi)  
;c)! @GoA  
import org.rut.util.algorithm.SortUtil; @+dHF0aXd  
oEAfowXSqk  
/** ~V$ f #X  
* @author treeroot eycV@|6u*  
* @since 2006-2-2 jYdV?B  
* @version 1.0 ;](h2Z`3s  
*/ #>q[oie1e  
public class ShellSort implements SortUtil.Sort{ W uf/LKj  
2v\W1VF  
/* (non-Javadoc) 9Dq.lr^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U_*3>Q  
*/ yqBa_XPV8  
public void sort(int[] data) { 2f`xHI/@fj  
for(int i=data.length/2;i>2;i/=2){ -kc(u1!  
for(int j=0;j insertSort(data,j,i); AP ;*iyQ[  
} ~R{8.!: >  
} T?e9eYwS  
insertSort(data,0,1); k5s?lWH  
} Nu+wL>t  
F '#^`G9  
/** ` @>ZGL:  
* @param data (txt8q  
* @param j i+RD]QL  
* @param i 'Q`C[*c  
*/ ^;64!BaK  
private void insertSort(int[] data, int start, int inc) { h60\ Y 8  
int temp; IQoH@l&Xk  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sU*3\  
} UKYupLu5  
} Zsk?QS FE  
} s*+ZYPk  
Z~R dFC  
} tGqQJT#mr7  
54wM8'+  
快速排序: 4ac1m,Jlt  
FpC~1Nau  
package org.rut.util.algorithm.support; &vkp?UH  
fMzYFM'i  
import org.rut.util.algorithm.SortUtil; y&3TQ]f\  
Zx9.pFc"  
/** r8+*|$K  
* @author treeroot 9;pzzZ  
* @since 2006-2-2 ^Yr|K  
* @version 1.0 1!f2*m  
*/ LK %K0o  
public class QuickSort implements SortUtil.Sort{ @?vLAsp\  
'ucGt  
/* (non-Javadoc) h=Oh9zsz8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W60Q3  
*/ x{2o[dK4}  
public void sort(int[] data) { 1{7_ `[  
quickSort(data,0,data.length-1); =<>pKQ)[  
} j aD!  
private void quickSort(int[] data,int i,int j){ s79 q 5  
int pivotIndex=(i+j)/2; @[0jFjK  
file://swap Q~h6J*  
SortUtil.swap(data,pivotIndex,j); QglYU  
_&K\D p&@  
int k=partition(data,i-1,j,data[j]); gTuX *7w  
SortUtil.swap(data,k,j); X -v~o/r7  
if((k-i)>1) quickSort(data,i,k-1); UCn.t  
if((j-k)>1) quickSort(data,k+1,j); 9Yd-m  
UXQb ={  
} }`4K)(>4nG  
/** ,NDxFy;d  
* @param data !rz)bd3$  
* @param i l&$*}yCK  
* @param j H}(=?}+  
* @return `TAcZl=8  
*/ 6l<1A$BQ  
private int partition(int[] data, int l, int r,int pivot) { =;g=GcVK  
do{ L[1d&d!p  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); OAY8,C=M  
SortUtil.swap(data,l,r); y 'mlee  
} TXx'7[  
while(l SortUtil.swap(data,l,r); v=j>^F Z  
return l; GU5W|bS  
} *|sxa#  
4 ;^g MI9  
} B6(h7~0(<  
5UPPk$8 `  
改进后的快速排序: (UXv,_"nU  
\N4d_ fPj  
package org.rut.util.algorithm.support; Mo~ki"9.  
v^;-@ddr  
import org.rut.util.algorithm.SortUtil; 7<fL[2-  
(}sDm ~;s  
/** $e>/?Ss  
* @author treeroot xa' nJ"f;  
* @since 2006-2-2 S\}?zlV  
* @version 1.0 pEY>A_F  
*/ Q;=6ag'  
public class ImprovedQuickSort implements SortUtil.Sort { #`r(zI[  
)K8P+zn~  
private static int MAX_STACK_SIZE=4096; dEL3?-;'  
private static int THRESHOLD=10; 5Zzr5 WM  
/* (non-Javadoc) F ZM2   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l&vm[3  
*/ K* 0 aXr?  
public void sort(int[] data) { $+0=GN  
int[] stack=new int[MAX_STACK_SIZE]; lGl[^ 0  
`!]R!T@C  
int top=-1; 4n#YDZ  
int pivot; G]1(X38[si  
int pivotIndex,l,r; "^Y6ctw  
}7-7t{G  
stack[++top]=0; 7&=-a|k~  
stack[++top]=data.length-1; p| Vmdnb  
;HR 6X  
while(top>0){ `8mD7xsg$  
int j=stack[top--]; RfD{g"]y  
int i=stack[top--]; 4 0p3Rv  
r[6#G2  
pivotIndex=(i+j)/2; 7s0)3HR}  
pivot=data[pivotIndex]; z7| s%&  
|*Of^IkG0  
SortUtil.swap(data,pivotIndex,j); mJSK; @w<O  
@Q/x&BV  
file://partition G`9cd\^  
l=i-1; B{[f}h.n  
r=j; R|nEd/' <  
do{ ~?2rGE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #Tup]czO  
SortUtil.swap(data,l,r); (zjz]@qJ  
} bELIRM9  
while(l SortUtil.swap(data,l,r); 71JM [2  
SortUtil.swap(data,l,j); E]e, cd  
@TdQZZ}G\x  
if((l-i)>THRESHOLD){ UY1JB^J$  
stack[++top]=i; YCirOge  
stack[++top]=l-1; dMey/A/VYt  
} )>-77\  
if((j-l)>THRESHOLD){ J'I1,5(  
stack[++top]=l+1; m(8jSGV  
stack[++top]=j; cBg,k[,  
} := ]sq}IN  
JmnBq<&,0  
} s"pR+)jf1D  
file://new InsertSort().sort(data); |\i:LG1  
insertSort(data); V"w`!  
} | De!ti  
/** }pbBo2  
* @param data w> Tyk#7lw  
*/ IXbdS9,>F  
private void insertSort(int[] data) { IlcNT_ 5a8  
int temp; ?BWHr(J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M(_^'3u  
}  %zA2%cq<  
} A/ 7r:yO  
} gJ<@;O8zu0  
-}=@ *See#  
} _fVh%_oH1  
)?!vJb"  
归并排序: MV Hz$hyB  
"z^BKb5  
package org.rut.util.algorithm.support; 2$o2.$i81  
&>&dhdTQ  
import org.rut.util.algorithm.SortUtil; 4w;r l(s  
g4~X#}:z$O  
/** 8O"x;3I9  
* @author treeroot kHt!S9r  
* @since 2006-2-2 &:;/]cwj  
* @version 1.0 u@GRN`yn  
*/ nQ:ml  
public class MergeSort implements SortUtil.Sort{ XR{5]lKt_  
v< 65(I>  
/* (non-Javadoc) Nm H}"ndv+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2E@C0HaL  
*/ A6@+gP<  
public void sort(int[] data) { p_rN1W Dd'  
int[] temp=new int[data.length]; 7yMieUF  
mergeSort(data,temp,0,data.length-1); %Nwyx;>9^K  
} )![f\!'PI  
o8~f   
private void mergeSort(int[] data,int[] temp,int l,int r){ &4mfzpK  
int mid=(l+r)/2; [_g#x(=  
if(l==r) return ; 1TK #eU  
mergeSort(data,temp,l,mid); D)H?=G  
mergeSort(data,temp,mid+1,r); y8<lp+  
for(int i=l;i<=r;i++){ "i!2=A8k  
temp=data; &LCUoTzj  
} 2 ||KP|5@  
int i1=l; %f_)<NP9=  
int i2=mid+1; !~Hafn-1  
for(int cur=l;cur<=r;cur++){ (hhdbf  
if(i1==mid+1) 5@w'_#!)  
data[cur]=temp[i2++]; BxSk%$J  
else if(i2>r) xm<5S;E5U4  
data[cur]=temp[i1++]; "-0pz\a  
else if(temp[i1] data[cur]=temp[i1++]; vR6^n~  
else pl jV|.?  
data[cur]=temp[i2++]; ]ro1{wm!WU  
} *eJhd w*  
} A^T~@AO  
SX_kr^#  
} "sX [p  
+t7c&td\  
改进后的归并排序: n.Ur-ot  
'U|MM;(  
package org.rut.util.algorithm.support; D{,[\^c  
*@\?}cX  
import org.rut.util.algorithm.SortUtil; J9b?}-O)  
Z-? Iip{  
/** o*O "\/pmF  
* @author treeroot OH-~  
* @since 2006-2-2 ~>Hnf_pZO  
* @version 1.0 1+16i=BF)  
*/ N=O+X~  
public class ImprovedMergeSort implements SortUtil.Sort { [[*0MA2Y  
)rs|=M=Xk  
private static final int THRESHOLD = 10; dVj'  
;JPbBwm  
/* Vz7w{HY  
* (non-Javadoc) =`7#^7Q9  
* g6[/F-3Qlf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9a"Y,1  
*/ 0I(GB;E  
public void sort(int[] data) { oP|pOs\$p  
int[] temp=new int[data.length]; -7Aw s)  
mergeSort(data,temp,0,data.length-1); 4y]:Gq z~  
} 'b=eC  
Pv{,aV\I}  
private void mergeSort(int[] data, int[] temp, int l, int r) { Z?.p%*>`T=  
int i, j, k; *6sJ*lh  
int mid = (l + r) / 2; ch)Ps2i  
if (l == r) Qq;m"M/  
return; :oon}_MdRd  
if ((mid - l) >= THRESHOLD) M0;t%*1  
mergeSort(data, temp, l, mid); K=!ZI/+ju  
else 2-c U -i4  
insertSort(data, l, mid - l + 1); 8 ACY uN\  
if ((r - mid) > THRESHOLD) HdY3DdC%q  
mergeSort(data, temp, mid + 1, r); !SO$k%b}!  
else j &0fC!k  
insertSort(data, mid + 1, r - mid); =E"kv!e   
|`q)/ 08b  
for (i = l; i <= mid; i++) { Ul$X%  
temp = data; =}%#$  
} pb/{ss+  
for (j = 1; j <= r - mid; j++) { ZVL- o<6  
temp[r - j + 1] = data[j + mid]; 0w'y#U)&8  
} }0Kqy;  
int a = temp[l]; },n,P&M\`  
int b = temp[r]; ard3yNQt  
for (i = l, j = r, k = l; k <= r; k++) { 'n>3`1E,  
if (a < b) { J1c&"Oh  
data[k] = temp[i++]; {P<BJ52=  
a = temp; Vav+$l|j@  
} else { :ET3&J L  
data[k] = temp[j--]; MoKXl?B<  
b = temp[j]; |;Se$AdT#  
} )]>i >  
} o $HJg  
} |`94Wj<  
v'bd.eqw  
/** Sf4h!ly  
* @param data ) v[Knp'  
* @param l {>UMw>T[  
* @param i '^-4{Y^2E  
*/ RBK>Lws6  
private void insertSort(int[] data, int start, int len) { cDQw`ORP*g  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); G0 nH Z6  
} LDi ez i  
} o+X'(!Trw  
} >QZt)<[  
} OB*Xb*HN  
iRj x];:Vu  
堆排序: d4/`:?w  
~Q$c!=   
package org.rut.util.algorithm.support; @k:f}-t  
N?mY|x\}wK  
import org.rut.util.algorithm.SortUtil; pRxlvVt  
1n"+~N^\  
/** .2{C29g  
* @author treeroot V=l Q}sBY  
* @since 2006-2-2 Lm*LJ_+ B  
* @version 1.0 53u.p c  
*/ kq1M <lk  
public class HeapSort implements SortUtil.Sort{ |q!2i  
Ti@P4:q  
/* (non-Javadoc) )q]j?Z.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jK C qH$  
*/ a9@l8{)RX  
public void sort(int[] data) { ".Deu|>  
MaxHeap h=new MaxHeap(); ^?^|Y?f2P?  
h.init(data);  I^(o3B  
for(int i=0;i h.remove(); J\dhi{0  
System.arraycopy(h.queue,1,data,0,data.length); 4G;`KqR@  
} dS;|Kl[Om  
c9g\7L,Z  
private static class MaxHeap{ MBYD,v&  
">D(+ xr!)  
void init(int[] data){ |Qt`p@W  
this.queue=new int[data.length+1]; O'& \-j 1  
for(int i=0;i queue[++size]=data; pqQdr-aR=  
fixUp(size); <>*''^  
} l&^[cR  
}  _7j/[  
4Utx 9^  
private int size=0; #;*ai\6>vD  
A^Hp#b @  
private int[] queue; ry'^1~,  
&A5[C{x  
public int get() { Jn:GA@[I  
return queue[1]; a+a%}76N  
} >A'!T'"~  
m1$P3tZPn  
public void remove() { VzYP:QRz  
SortUtil.swap(queue,1,size--); ,YMdXYu`s  
fixDown(1); k#=leu"I  
} u, SX`6%  
file://fixdown yA>p[F  
private void fixDown(int k) { = cI\OsV&?  
int j; Y`O}]*{>8R  
while ((j = k << 1) <= size) { Y)j,(9  
if (j < size %26amp;%26amp; queue[j] j++; 5$"[gdt)T  
if (queue[k]>queue[j]) file://不用交换 ={i&F  
break; +$mskj0s  
SortUtil.swap(queue,j,k); HG3>RcB  
k = j; qP^0($  
} by y1MgQd  
} sImxa`kb  
private void fixUp(int k) { J0WXH/:  
while (k > 1) { K?OX  
int j = k >> 1; C^42=?  
if (queue[j]>queue[k]) /h.3<HI."*  
break; VX>t!JP p  
SortUtil.swap(queue,j,k); Z%n.:I<%ZV  
k = j; D>x'3WYR  
} LYq2A,wm$  
} (PrPH/$  
<ZvPtW  
} BLH3$*,H  
,l? 76g  
} Dp6"I!L<|  
5~R{,]52  
SortUtil: S| -{wC%  
w>q_8V_K  
package org.rut.util.algorithm; ]aW.b_7<9  
[ MXXY  
import org.rut.util.algorithm.support.BubbleSort; w*ktx{  
import org.rut.util.algorithm.support.HeapSort; &fy8,}  
import org.rut.util.algorithm.support.ImprovedMergeSort; x2&! PpM  
import org.rut.util.algorithm.support.ImprovedQuickSort; xY'YbHFz  
import org.rut.util.algorithm.support.InsertSort; leYmV FE  
import org.rut.util.algorithm.support.MergeSort; nT .2jk+  
import org.rut.util.algorithm.support.QuickSort; 'nDT.i  
import org.rut.util.algorithm.support.SelectionSort; I/-w65J]  
import org.rut.util.algorithm.support.ShellSort; CY).I`aJ  
r`g;k&"a  
/** gGdYh.K&e5  
* @author treeroot Z!i'Tbfn  
* @since 2006-2-2 wkpVX*DfRE  
* @version 1.0 Mc3h  R0  
*/ *U^I `j[u  
public class SortUtil { d\Z4?@T<5  
public final static int INSERT = 1; lR K ?%~  
public final static int BUBBLE = 2; sF3 l##Wv  
public final static int SELECTION = 3; Cwa0!y5%  
public final static int SHELL = 4; i@j ?<  
public final static int QUICK = 5; <:7e4#  
public final static int IMPROVED_QUICK = 6; ;3}b&Z[N]  
public final static int MERGE = 7; d@4=XSj  
public final static int IMPROVED_MERGE = 8; Fl>j5[kLZ  
public final static int HEAP = 9; ,F9wc<V8  
qq%_ksQ  
public static void sort(int[] data) { ^[z\KmUqt  
sort(data, IMPROVED_QUICK); )3\rp$]1  
} ZU@jtqq  
private static String[] name={ ~9;mZi1-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *7V{yK$O|  
}; {Om3fSk:  
G8-d%O p  
private static Sort[] impl=new Sort[]{ %LlKi5u]  
new InsertSort(), E :g ArQ  
new BubbleSort(), ;RZa<2  
new SelectionSort(), ^a5~FI:  
new ShellSort(), 4GejT(U  
new QuickSort(), 4i&!V9@:  
new ImprovedQuickSort(), pR7G/]U$A  
new MergeSort(), ct/THq  
new ImprovedMergeSort(), Z$K%@q,10+  
new HeapSort() "Ksd9,J\b  
}; ! m5\w>  
`CouP-g.  
public static String toString(int algorithm){ .z7f_KX^  
return name[algorithm-1]; pnb$lpxt  
} FsZEB/c  
sh3}0u+  
public static void sort(int[] data, int algorithm) { Ec/+9H6g  
impl[algorithm-1].sort(data); 2p.+C35c=j  
} -;.fU44O[#  
>'g60R[  
public static interface Sort { ky"7 ^  
public void sort(int[] data); fb=vO U  
} d-&dA_ ?  
o%Q'<0d  
public static void swap(int[] data, int i, int j) { cwU6}*_zn  
int temp = data; p)] ^>-L  
data = data[j]; uV\#J{'*  
data[j] = temp; 3VgH* vAU}  
} I`lH6hHp  
} ~%q e,  
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