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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。 )M: pg%  
插入排序: k7R}]hq]""  
n6 VX0R  
package org.rut.util.algorithm.support; in[yrqFb7t  
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import org.rut.util.algorithm.SortUtil; F s{}bQyQ  
/** "A>/m"c]*  
* @author treeroot %"C%pA  
* @since 2006-2-2 ;r1.Uz(  
* @version 1.0 NmH:/xU?^  
*/ oE;SZ"$ x  
public class InsertSort implements SortUtil.Sort{ d$;1%rRj8  
v< Ozr:lL  
/* (non-Javadoc) 0c,)T1NG>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vi5&%/Y  
*/ R|,F C'  
public void sort(int[] data) { $Rd]e C  
int temp; zg[.Pws:E  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1%^d <%,]  
} kvoEnwBe_  
} T l%n|pc  
} FZi'#(y  
UEb'b,O_9  
} 1k:s~m?!  
;Q}pmBkqB  
冒泡排序: #n5D K{e  
-IP3I  
package org.rut.util.algorithm.support; o(|fapK.  
GQvJj4LJp  
import org.rut.util.algorithm.SortUtil; Wb7z&vj  
7XDze(O5  
/** ZQ_&HmgRy  
* @author treeroot vrr` ^UB2  
* @since 2006-2-2 @8$3Q,fF(  
* @version 1.0 (e~vrSk+)~  
*/ o<f#Zi  
public class BubbleSort implements SortUtil.Sort{ 8va&*J? 2  
Lu6?$N57rC  
/* (non-Javadoc) MF}}o0P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C>0='@LB@r  
*/ 'C")X  
public void sort(int[] data) { n?EL\B   
int temp; /Sn>{ &  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]ICBNJ  
if(data[j] SortUtil.swap(data,j,j-1); 4hLv"R.  
} /qeSR3WC  
} 0D=7Mef  
} a+_F^   
} M?FbBJ`sF  
g0&Rl  
} n@e[5f9?x  
oKlOcws}  
选择排序: NW*qw q  
Do\YPo_Mr  
package org.rut.util.algorithm.support; Fu/{*4  
j\^ u_D  
import org.rut.util.algorithm.SortUtil; 1(ud(8?|  
=#Qm D=  
/** a#NP69  
* @author treeroot C\d5t4s  
* @since 2006-2-2 OQC.p,SO  
* @version 1.0 Z7@~#)3  
*/ 45DR%cz  
public class SelectionSort implements SortUtil.Sort { w*-1*XNA  
\@eC^D2  
/* o@!!I w  
* (non-Javadoc) gvi]#|  
* w-3 B~e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z"u|-RoBV  
*/ lDd8dT-Q.  
public void sort(int[] data) { 1r-#QuV#  
int temp; #]_S)_Z-  
for (int i = 0; i < data.length; i++) { 1qgzb  
int lowIndex = i; (8?5REz  
for (int j = data.length - 1; j > i; j--) { w]Fi:kV  
if (data[j] < data[lowIndex]) { _;x7vRWmN  
lowIndex = j; FhyA_U%/nF  
} 5( }Qg9%  
} A!\-e*+W=  
SortUtil.swap(data,i,lowIndex); K7 N)VG  
} i)[8dv  
} G._E9  
oP0ZJK&;  
} -?K?P=B;X  
?{bAyh/  
Shell排序: MG G c  
e52y}'L  
package org.rut.util.algorithm.support; $sTvXf:g  
kl90w  
import org.rut.util.algorithm.SortUtil; 5 Y|(i1  
Ksu_4dE  
/** /t<C_lLM  
* @author treeroot 9}TQ u0  
* @since 2006-2-2 a!?&8$^<  
* @version 1.0 }s7ibm'  
*/ ncy?w e  
public class ShellSort implements SortUtil.Sort{ aRh1Q=^@(4  
C*f3PB=H_  
/* (non-Javadoc) 'r2VWavT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6IQkP9P(  
*/ JL7"}^  
public void sort(int[] data) { dAZh# i[  
for(int i=data.length/2;i>2;i/=2){  XM" {"  
for(int j=0;j insertSort(data,j,i); e=<%{M&  
} >dTJ  
} jRv j:H9  
insertSort(data,0,1); FKN!*}3  
} ]F]!>dKA  
?g5u#Q> !  
/** V`7^v:  
* @param data 4X prVB  
* @param j 9j6  
* @param i V L&5TZtz  
*/ 2\: z   
private void insertSort(int[] data, int start, int inc) { "Y7 ]t:8  
int temp; ;Npv 2yAab  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )ZI9n7  
} NP {O  
} s=uWBh3J  
} 6a=Y_fma  
Y.<&phv  
} 96&Y  
.$k2.-k  
快速排序: oiS>:de%tc  
V=C@ocy Z  
package org.rut.util.algorithm.support; SuHv{u45  
xTJ-v/t3<  
import org.rut.util.algorithm.SortUtil; $)5-}NJf'  
U;_b4S:  
/** #xopJaY  
* @author treeroot =>0+BD  
* @since 2006-2-2 PUdJ>U  
* @version 1.0 t!g9,xG<X  
*/ 9J$8=UuxWG  
public class QuickSort implements SortUtil.Sort{ G|p3NhLgO=  
B f_oIc  
/* (non-Javadoc) B3P#p^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (j%d{y4  
*/ #()u=)  
public void sort(int[] data) { #0hX'8];(  
quickSort(data,0,data.length-1); =.]>,N`C  
} 4[S0~O{r  
private void quickSort(int[] data,int i,int j){ Z(8'ki  
int pivotIndex=(i+j)/2; 2g6G\F  
file://swap f|*vWHSM  
SortUtil.swap(data,pivotIndex,j); $=c79Al(  
bHr2LhQCN  
int k=partition(data,i-1,j,data[j]); Y]5\%JR  
SortUtil.swap(data,k,j); 6!,Am^uXM  
if((k-i)>1) quickSort(data,i,k-1); U[ $KQEJYj  
if((j-k)>1) quickSort(data,k+1,j); Ch1+YZG  
&~u=vuX  
} 7H-,:8  
/** hm%'k~  
* @param data !*0\Yi,6  
* @param i a:o Z5PX=  
* @param j 2 o`a^'Iw  
* @return M1MpR+7S  
*/ &AMW?vO  
private int partition(int[] data, int l, int r,int pivot) { *ay>MlcV2=  
do{ ~=Y <B/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |EJ&s393&  
SortUtil.swap(data,l,r); ZD9UE3-  
} F Ty`#*7Ul  
while(l SortUtil.swap(data,l,r); IX7|_ci  
return l; 3gW4\2|T  
} jhWNMu  
rx*1S/\PPc  
} oRM,_  
Tr1#=&N0  
改进后的快速排序: JD^&d~n_  
p%A(5DE  
package org.rut.util.algorithm.support; .(Gq9m[~8H  
?-g=Rfpag  
import org.rut.util.algorithm.SortUtil; g8yWFqE!T  
kO:iA0KUX  
/** w#Y<~W&  
* @author treeroot <qzHMy Ai  
* @since 2006-2-2 T/ CI?sn  
* @version 1.0 `0rEV _$  
*/ }b+tD3+  
public class ImprovedQuickSort implements SortUtil.Sort { R|T_9/#)  
//G5lW/*  
private static int MAX_STACK_SIZE=4096; \ A\a=A[  
private static int THRESHOLD=10; =nEl m*E  
/* (non-Javadoc) '#SacJ\L7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :\Z;FA@g(g  
*/ Aa;R_Jz  
public void sort(int[] data) { G?)vqmJ%  
int[] stack=new int[MAX_STACK_SIZE]; "D7*en  
slEsSR'J]  
int top=-1; "v-\nAu  
int pivot; NDhHU#Q9  
int pivotIndex,l,r; tr2@{xb  
D"F5-s7  
stack[++top]=0; ;m}lmq,  
stack[++top]=data.length-1; N}wi<P:*)  
EA 4a Z6%  
while(top>0){ QQKvy0?1  
int j=stack[top--]; $|!VP'VI  
int i=stack[top--]; ;JpU4W2/  
xW{_c[oA  
pivotIndex=(i+j)/2; rr2'bf<]  
pivot=data[pivotIndex]; TL+a_]3@  
6hSj)  
SortUtil.swap(data,pivotIndex,j); TuphCu+Oh  
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file://partition `gy]|gS#b  
l=i-1; FqiC zP4  
r=j; $%VFk53I  
do{ h2+vl@X  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OWCd$c_(  
SortUtil.swap(data,l,r); mFOuE5  
} \$s<G|<P  
while(l SortUtil.swap(data,l,r); -[~UX!XFM  
SortUtil.swap(data,l,j); eKpH|S!x U  
\1f$]oS  
if((l-i)>THRESHOLD){ bF:vD&Sf  
stack[++top]=i; uk_?2?>-5  
stack[++top]=l-1; {mF:m5e  
} N(Us9  
if((j-l)>THRESHOLD){ <FmrYwt  
stack[++top]=l+1; -yOrNir}W  
stack[++top]=j; Os9xZ  
} noa?p&Y1m  
[#n ~ L6  
} ]*U\ gm%  
file://new InsertSort().sort(data); It!%/Y5  
insertSort(data); L~Epd.,Dt  
} |)i- c`x  
/** o`\l&jUNe  
* @param data gKcP\m  
*/ 4p&qH igG  
private void insertSort(int[] data) { JAen= %2b  
int temp; (w?@qs!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J@(=#z8xS  
} !)ey~Suh  
} 2pH2s\r<UJ  
} cnC&=6=a<  
Z T95g  
} }8GCOY  
%Vrl"4^}t  
归并排序: j% !   
pNr3u  
package org.rut.util.algorithm.support; I5>HB;Q  
vLJ<_&6  
import org.rut.util.algorithm.SortUtil; ZU7e1VaZM  
UL$^zR3%d  
/** o\1"ux;b  
* @author treeroot `,tv&siSA  
* @since 2006-2-2 R*/%+  
* @version 1.0 3\|e8(bc  
*/ }k7@ X  
public class MergeSort implements SortUtil.Sort{ soA>&b !?  
K&<bn22  
/* (non-Javadoc) lyfLkBF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "T?%4^:g  
*/ cIK-VmO  
public void sort(int[] data) { 7EOn4I2@[  
int[] temp=new int[data.length]; d%VGfSrKq  
mergeSort(data,temp,0,data.length-1); C0z E<fl  
} <a2t"rc  
-o6K_R}R  
private void mergeSort(int[] data,int[] temp,int l,int r){ tn+i5Eso  
int mid=(l+r)/2; A5z`_b4f  
if(l==r) return ; 1Jc-hrN-  
mergeSort(data,temp,l,mid); g&O%qX-  
mergeSort(data,temp,mid+1,r); 5R?iTB1,  
for(int i=l;i<=r;i++){ G<9MbMG  
temp=data; FgrOZI;_  
} 7&/iuP$.  
int i1=l; 7=u\D  
int i2=mid+1; LR]P?  
for(int cur=l;cur<=r;cur++){ /@lXQM9 T  
if(i1==mid+1) GfD!Z3  
data[cur]=temp[i2++]; pY!@w0.  
else if(i2>r) 0^*4LM|z  
data[cur]=temp[i1++]; 'h%)@q)J)  
else if(temp[i1] data[cur]=temp[i1++]; &!2 4l=!  
else ae{% * \J  
data[cur]=temp[i2++]; pq#Hca[  
} E@hvO%  
} <w+K$WE {  
HGs.v}@&  
} v0jRoE#  
4&!`Yi_1L  
改进后的归并排序: }I}RqD:`  
7ml,  
package org.rut.util.algorithm.support; s[nXr   
BC%t[H} >R  
import org.rut.util.algorithm.SortUtil; _OZrH(8  
' ]l,  
/** ~A}"s-Kq5  
* @author treeroot .d^8w97  
* @since 2006-2-2 &sh %]o8  
* @version 1.0 `]_#_  
*/ VT?J TW  
public class ImprovedMergeSort implements SortUtil.Sort { tmDI2Z%7  
NjMbQ M4  
private static final int THRESHOLD = 10; } =?kf3k  
`22F@JYN  
/* )/HSt%>  
* (non-Javadoc) &`0y<0z  
* Z 3m5DK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L10Vq}W"  
*/ qi;@A-cq  
public void sort(int[] data) { Pan^@B=Q  
int[] temp=new int[data.length]; he8y  
mergeSort(data,temp,0,data.length-1); Ms=x~o'  
} $L)9'X   
Z+' 7c|a  
private void mergeSort(int[] data, int[] temp, int l, int r) { BR8z%R  
int i, j, k; .<gA a"  
int mid = (l + r) / 2; xv]P-q0  
if (l == r) ':R)i.TS  
return; iSUn}%YFz!  
if ((mid - l) >= THRESHOLD) |t1D8){!  
mergeSort(data, temp, l, mid); ~=aGv%vX  
else Q 6{2@  
insertSort(data, l, mid - l + 1); {UQpD   
if ((r - mid) > THRESHOLD) 6P;IKOv^  
mergeSort(data, temp, mid + 1, r); wWko9h=|mQ  
else Xnt`7L<L  
insertSort(data, mid + 1, r - mid); zq80}5%2CT  
RvZi%)  
for (i = l; i <= mid; i++) { K%[Rv#>;q|  
temp = data; )Uw QsP  
} :[#HP66[O5  
for (j = 1; j <= r - mid; j++) { r4@!QR<h  
temp[r - j + 1] = data[j + mid]; f7)}A/$4+  
} o )GNV  
int a = temp[l]; Q6Vy}  
int b = temp[r]; m4<8v  
for (i = l, j = r, k = l; k <= r; k++) { usZmf=p-r  
if (a < b) { ,v4Z[ (  
data[k] = temp[i++]; B#&U5fSw+0  
a = temp; 8iB1a6TlL  
} else { _:x/\ 8P  
data[k] = temp[j--]; bqJL@!T  
b = temp[j]; y-cRqIM  
} Q%o ]&Hdn  
} w{#K.dx  
} kpsus \T  
@OZW1p  
/** cR[)[9}  
* @param data W#$ pt>h)  
* @param l -\b~R7VQ  
* @param i YT+fOndjaF  
*/ UO5^4  
private void insertSort(int[] data, int start, int len) { ,}2M'DSWa  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); x|<rt96 6A  
} 36` aG Y  
} ;+>-uPT/1  
} oJ ,t]e*q=  
} "[L[*>[9!  
BT: =  
堆排序: 8c`g{ *z  
*LOpbf  
package org.rut.util.algorithm.support; S) Sv4Qm  
H[U$4 %t  
import org.rut.util.algorithm.SortUtil; !lG5BOJM  
G#ZU^%$M,  
/** H2 5Mx>|d  
* @author treeroot Z Mids"Xdf  
* @since 2006-2-2 DPw"UY:  
* @version 1.0 w 6+X{  
*/ \CM/KrCR  
public class HeapSort implements SortUtil.Sort{ Ytmt+9  
o/@.*Rj>Bg  
/* (non-Javadoc) B_i@D?bTD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |lm   
*/  poGF  
public void sort(int[] data) { lsU|xOB  
MaxHeap h=new MaxHeap(); MLtfi{;LH  
h.init(data); jY-{hW+r  
for(int i=0;i h.remove(); s+YQ :>F  
System.arraycopy(h.queue,1,data,0,data.length); /zMiy?  
} mk~&>\  
~'m GGH2  
private static class MaxHeap{ a)^f`s^aa  
}i!hzkK#  
void init(int[] data){ F&<si:}KB  
this.queue=new int[data.length+1]; /B.\6  
for(int i=0;i queue[++size]=data; ):; &~  
fixUp(size); >KH.~Jfy  
} <]eWr:;  
} ^8Tq0>n?  
1`)ie%=  
private int size=0; fWhwI+  
xbnx*4o0  
private int[] queue; h-+9Bv]  
6QkdH7Qf=  
public int get() { 1q]V/V}  
return queue[1]; 5, R\tJCK  
} e7T"?s  
cq>{  
public void remove() { coT|t T  
SortUtil.swap(queue,1,size--); w&jyijk(  
fixDown(1); !(~eeE}|lM  
} W(Z_ac^e[  
file://fixdown j$'L-kK+  
private void fixDown(int k) { zPEx;lO$  
int j; jku_0Q0*?  
while ((j = k << 1) <= size) { PVH^yWi n  
if (j < size %26amp;%26amp; queue[j] j++; S;sggeP7,  
if (queue[k]>queue[j]) file://不用交换 B!0o6)u'  
break; >&6pBtC_  
SortUtil.swap(queue,j,k); [tGAo/  
k = j; D^yZ!}Kl  
} -'BC*fVr  
} 0ubT/  
private void fixUp(int k) { 6S)$wj*w  
while (k > 1) { qL.1N~$2  
int j = k >> 1; (Gr8JpV  
if (queue[j]>queue[k]) ~CIA6&  
break; -CtLL _I  
SortUtil.swap(queue,j,k); @]P#]%^D2  
k = j; !#j y=A  
} F$QN>wPpM  
} [* ,k  
eQ`TW'[9_6  
} 7nM]E_  
:@x24wN/  
} N7Vv"o  
l5_RG,O0A  
SortUtil: XdE#l/#  
M }=X/*T  
package org.rut.util.algorithm; " 2A`M~  
Wew'bj  
import org.rut.util.algorithm.support.BubbleSort; & 9}L +/,  
import org.rut.util.algorithm.support.HeapSort; (jd)sf6Tj[  
import org.rut.util.algorithm.support.ImprovedMergeSort; by!1L1[JTt  
import org.rut.util.algorithm.support.ImprovedQuickSort; j oDY   
import org.rut.util.algorithm.support.InsertSort; *z I@Htp  
import org.rut.util.algorithm.support.MergeSort; KI)jP((  
import org.rut.util.algorithm.support.QuickSort; t0h @i`  
import org.rut.util.algorithm.support.SelectionSort; nI7G"f[%r;  
import org.rut.util.algorithm.support.ShellSort; Sm-gi|A  
gw' uY$  
/** DjY&)oce(  
* @author treeroot z(b0U6)qQ  
* @since 2006-2-2 j3 ,6U jlU  
* @version 1.0 tkX7yg>`  
*/ Y5?*=eM  
public class SortUtil { is}6cR  
public final static int INSERT = 1; *'4+kj7>  
public final static int BUBBLE = 2; %EkV-%o*  
public final static int SELECTION = 3; jkCa2!WQ'i  
public final static int SHELL = 4; C^9G \s'  
public final static int QUICK = 5; c-3-,pyM_T  
public final static int IMPROVED_QUICK = 6; Ks'msSMC  
public final static int MERGE = 7; reseu*5  
public final static int IMPROVED_MERGE = 8; u`?MV2jU2  
public final static int HEAP = 9; :EJ8^'0Q  
-kFEVJbUyc  
public static void sort(int[] data) { WO$9Svh8  
sort(data, IMPROVED_QUICK); Jm8{@D%  
} gZ vX~  
private static String[] name={ 9n4vuBgv  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Lt`d {s  
}; uc;1{[5`1q  
Xi"+{6  
private static Sort[] impl=new Sort[]{ 2..b/  
new InsertSort(), _RI`I}&9Z  
new BubbleSort(), *+|D8xp  
new SelectionSort(), mU0j K@^&M  
new ShellSort(), qQK0s*^W  
new QuickSort(), v0uDL7  
new ImprovedQuickSort(), -OV:y],-  
new MergeSort(), 6[3oOO:uo  
new ImprovedMergeSort(), \yt-_W=[  
new HeapSort() Sl,X*[HGd  
}; );EW(7KeL  
BkywYCWZ )  
public static String toString(int algorithm){ |dNJx<-  
return name[algorithm-1]; PNy)TqdRS  
} ,@I_b  
B-'oB>|  
public static void sort(int[] data, int algorithm) { (=#[om( A  
impl[algorithm-1].sort(data); u\-WArntc  
} $Ro]]NUz|  
|,!]]YO.V  
public static interface Sort { tFlLKziU  
public void sort(int[] data); u /PaXQ  
} cHqT1EY  
>f)/z$ qn  
public static void swap(int[] data, int i, int j) { DD 8uG`<  
int temp = data; /$ a>f>EJ  
data = data[j]; mL\_C9k,n  
data[j] = temp; i,#j@R@.C7  
} 2XoFmV),F  
} : L}Fm2^  
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