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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。 E0PBdiD6hs  
插入排序: & Gt9a-ne  
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package org.rut.util.algorithm.support; 0.5_,an3  
(TQXG^n$gY  
import org.rut.util.algorithm.SortUtil; ,O+7nByi[V  
/** `F@yZ4L3S  
* @author treeroot C u:-<  
* @since 2006-2-2 tpD?-`9o  
* @version 1.0 5%$#3LT|  
*/ V+q RDQ  
public class InsertSort implements SortUtil.Sort{ "8I4]'  
Sm,$~~iq}  
/* (non-Javadoc) YGO@X(ej,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =EJ"edw]%0  
*/ .,,73"  
public void sort(int[] data) { H#y"3E<s  
int temp; $9~1s/('  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;rKYWj>IR  
} 9lxT5Wg  
} (r4\dp&  
} G dU W$.  
^q` *!B 9@  
} DPOPRi~  
u| c+w)a  
冒泡排序: =)8Ct  
(Wqhuw!u  
package org.rut.util.algorithm.support; Ln|${c  
'Ap 5Aq  
import org.rut.util.algorithm.SortUtil; ,Mc 2dhq  
EoeEg,'~F  
/** Izu.I_$4  
* @author treeroot 2LU'C,o?  
* @since 2006-2-2 ?s]`G'=>V`  
* @version 1.0 Kc0OLcu^d  
*/ s|'L0` <B  
public class BubbleSort implements SortUtil.Sort{ $ Zr,-  
,GIqRT4K  
/* (non-Javadoc) }[`?#`sW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ErC[Zh"''  
*/ $@)d9u cd  
public void sort(int[] data) { `uHpj`EU  
int temp; Uj)]nJX  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <4,?lZ  
if(data[j] SortUtil.swap(data,j,j-1); FF/R_xnx  
} Gu).*cU  
} z%tu6_4j  
} . $YF|v[=  
} Fr3t [:D  
(qN(#~  
} UAZ&*{MM^  
rgKn=8+a  
选择排序: [Gy'0P(EQ  
|$2N$6\SP  
package org.rut.util.algorithm.support; RfG$Px '  
I>Q,]S1h  
import org.rut.util.algorithm.SortUtil; nn4Sy,cz  
ycD.:w p\'  
/** ,&] ` b#Rc  
* @author treeroot C/Bx_j((  
* @since 2006-2-2 |LE++t*X~  
* @version 1.0 T l(uqY?9  
*/ oH0F9*+W  
public class SelectionSort implements SortUtil.Sort { ^\jX5)2{  
x)ZH;)  
/* D(U3zXdO  
* (non-Javadoc) \|` Pul$  
* )%w8>1 }c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "IJMvTmj  
*/ >[4|6k|\x  
public void sort(int[] data) { &W// Ox )f  
int temp; arVf"3a  
for (int i = 0; i < data.length; i++) { "0zXpQi,B  
int lowIndex = i; 9= $,]M  
for (int j = data.length - 1; j > i; j--) { _kX/LR"L+  
if (data[j] < data[lowIndex]) { k+GnF00N^8  
lowIndex = j; 14!a)Ijl  
} p+UHJ&  
} ./y[<e  
SortUtil.swap(data,i,lowIndex); Prz +kPP  
} ef:$1VIBda  
} _|wY[YJ[  
fUKdC \WL  
} aDvO(C  
{)9HS~e T  
Shell排序: mW0&uSM D  
Qwo9>ClC  
package org.rut.util.algorithm.support; He-Ja  
&t|V:_?/x  
import org.rut.util.algorithm.SortUtil; c0Ro3j\p  
NF(IF.8G  
/** $o$Ev@mi  
* @author treeroot wp*&&0O!  
* @since 2006-2-2 fZ~kw*0*  
* @version 1.0 pMZf!&tM  
*/ xgqv2s>L  
public class ShellSort implements SortUtil.Sort{ UEQ'D9  
{e[pSD6   
/* (non-Javadoc) 6O@ ^`T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `NWgETf^#  
*/ = EChH@3  
public void sort(int[] data) { c]!D`FA*K  
for(int i=data.length/2;i>2;i/=2){ W*rU,F|9  
for(int j=0;j insertSort(data,j,i); dIfs 8%kl  
} Xt,,AGm}  
} E,D:D3O  
insertSort(data,0,1); kl3S~gE4@  
} [T[9*6Kt  
: Nj`_2  
/** +x9"#0|k;  
* @param data q>|[JJ*6_N  
* @param j 2hwXWTSu  
* @param i t3#H@0<  
*/ HLoQ}oK|K  
private void insertSort(int[] data, int start, int inc) { K)Xs L  
int temp; B`?N0t%X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A?;8%00  
} e9Ul A  
} gR-Qj  
} @X|i@{<';  
7tfivIj)e  
} Oa\`;  
e:GgA  
快速排序: `J=1&ae{  
lA.;ZD!  
package org.rut.util.algorithm.support; +F7<5YW&(  
# +QWi0B  
import org.rut.util.algorithm.SortUtil; Vh#Mp!  
?lc[ hH  
/** e\A(#l@g  
* @author treeroot 8R)D! 7[l  
* @since 2006-2-2 ] [HGzHA  
* @version 1.0 orB8Q\p'  
*/ WBw M;S#%  
public class QuickSort implements SortUtil.Sort{ aucZJjH  
sk7rU+<  
/* (non-Javadoc) \=w'HZH#+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PHRGhKJW})  
*/ W8G9rB|T  
public void sort(int[] data) { UKKSc>D1  
quickSort(data,0,data.length-1); O/D Af|X|  
} EREolCASb  
private void quickSort(int[] data,int i,int j){ a)_rka1(  
int pivotIndex=(i+j)/2; zmB31' _  
file://swap wUK7um  
SortUtil.swap(data,pivotIndex,j); m1hW<  
@q> ktE_  
int k=partition(data,i-1,j,data[j]); (Pk"NEP   
SortUtil.swap(data,k,j); QM[A;WBr7  
if((k-i)>1) quickSort(data,i,k-1); }x kLD!  
if((j-k)>1) quickSort(data,k+1,j); mFqSD  
wovmy{K  
} 6WE&((r ^  
/** \);.0  
* @param data YH)Opk  
* @param i hncS_ZA  
* @param j G}!7tU  
* @return :W.jNV{e\F  
*/ y:[BP4H?y  
private int partition(int[] data, int l, int r,int pivot) { ]UX`=+{  
do{ JkSdLj  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $ ^W-Wmsz  
SortUtil.swap(data,l,r); "t[M'[ `C  
} QP6z?j.  
while(l SortUtil.swap(data,l,r); May&@x/oMS  
return l; AVXX\n\_  
} le7 `uz!%  
,c4c@|Bh?  
} $uEJn&n7}  
kCima/+_  
改进后的快速排序: D9qX->p  
c%|vUAq*  
package org.rut.util.algorithm.support; SU?wFCGT%  
5cD XWF  
import org.rut.util.algorithm.SortUtil; HQq`pG%m6  
rr|"r  
/** B0f_kH~p~  
* @author treeroot H4M{_2DO  
* @since 2006-2-2 ETU-]R3  
* @version 1.0 %x&F4U  
*/  MKU7fFN.  
public class ImprovedQuickSort implements SortUtil.Sort { M'yO+bu  
No:^hY:F8  
private static int MAX_STACK_SIZE=4096; PC*m% ?+  
private static int THRESHOLD=10; Q]< (bD.7  
/* (non-Javadoc) {IJ-4>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7t'(`A 6t/  
*/ Vy]A,Rn7  
public void sort(int[] data) { +'-rTi\  
int[] stack=new int[MAX_STACK_SIZE]; ($c`s8mp  
5^\m`gS  
int top=-1; x+4v s s  
int pivot; :~yzDk\I"-  
int pivotIndex,l,r; XZ} de%U1  
br b[})}  
stack[++top]=0; _-n Y2)  
stack[++top]=data.length-1; -  $%jb2  
d!o.ASL{  
while(top>0){ |Eb&}m:E$  
int j=stack[top--]; 4<u;a46Z#M  
int i=stack[top--]; NdZ)[f:2  
C1 W>/?XC  
pivotIndex=(i+j)/2; +4Q[N;[+*  
pivot=data[pivotIndex]; GE@uO J6H  
u=%y  
SortUtil.swap(data,pivotIndex,j); ]3}feU+  
d>&\V)E  
file://partition 3c b[RQf  
l=i-1; F#su5<d  
r=j; ' PELf P8  
do{ ;d4 y{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,(P %z.P@  
SortUtil.swap(data,l,r); D ZVXz|g  
} mmHJ h\2v  
while(l SortUtil.swap(data,l,r); !nwbj21%  
SortUtil.swap(data,l,j); Lx%:t YZ  
hcyn  
if((l-i)>THRESHOLD){ G;NB\3 ~X  
stack[++top]=i; g92dw<$>  
stack[++top]=l-1; 8)pB_en3sO  
} k {a)gFH O  
if((j-l)>THRESHOLD){ DcN"=Y  
stack[++top]=l+1; zrrz<dW  
stack[++top]=j; 7%4.b7Q  
} .U 39nd  
Pg Syt  
} AF GwT%ZD  
file://new InsertSort().sort(data); P{cos&X|  
insertSort(data); -KiRj!v|  
} a%E8(ms37y  
/** 9<l-NU9 _  
* @param data |<rfvsQ.  
*/ g2=}G<*0  
private void insertSort(int[] data) { j7}lF?cJ2  
int temp; %K?iNe  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l<xFnj  
} '0RRFO  
} !!WJn}  
} A#35]V06  
MtUY?O.P2  
} D#jX6  
x%6hM |U  
归并排序: Xhse~=qA  
.E$q&7@/j  
package org.rut.util.algorithm.support; ]G*$W+G]  
uoCGSXsi  
import org.rut.util.algorithm.SortUtil; >rw"Rd'  
:!O><eQw  
/** ZoxS*Xk  
* @author treeroot X`1p'JD  
* @since 2006-2-2 r?^"6 5 =  
* @version 1.0 Vv4H:BK$  
*/ Dx3%K S  
public class MergeSort implements SortUtil.Sort{ _2OuskL  
EwQae(PpA  
/* (non-Javadoc) K]<u8eF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q]#Z9H  
*/ KO&:06V{  
public void sort(int[] data) { 7`fY*O6   
int[] temp=new int[data.length]; 7|Dn+ =  
mergeSort(data,temp,0,data.length-1); &@6 GI<  
} s}(X]Gx1  
} 0;Sk(B>  
private void mergeSort(int[] data,int[] temp,int l,int r){ QNArZ6UQ  
int mid=(l+r)/2; 4SR(->@  
if(l==r) return ; lFf XWNb  
mergeSort(data,temp,l,mid); =}R~0|^  
mergeSort(data,temp,mid+1,r); ,I`_F,  
for(int i=l;i<=r;i++){ |>2: eH  
temp=data; gS$A   
} tjxvN 4l  
int i1=l; 4RQ5(YTTuR  
int i2=mid+1; p{.8_#O%S  
for(int cur=l;cur<=r;cur++){ H$tb;:  
if(i1==mid+1) 1[DS'S  
data[cur]=temp[i2++]; 4j3oT)+8  
else if(i2>r) f#P_xn&et  
data[cur]=temp[i1++]; #ElejQ|?  
else if(temp[i1] data[cur]=temp[i1++]; l>7r2;  
else l1<?ONB.#  
data[cur]=temp[i2++]; u+2Lm*M  
} A5XR3$5P  
} gs`> C(  
3eKQ<$w  
}  O<GF>  
=M<z8R  
改进后的归并排序: ><Uk*mwL  
" H1:0p  
package org.rut.util.algorithm.support; $bGD%9 z  
A]?^ H<  
import org.rut.util.algorithm.SortUtil; %&<W(|U1<  
~E*d G  
/** GZ8:e3ri  
* @author treeroot l h/&__  
* @since 2006-2-2 a+?~;.i~  
* @version 1.0 y $V[_TN  
*/ ~>%DKJe  
public class ImprovedMergeSort implements SortUtil.Sort { !Iq{ 5:  
HC7JMj  
private static final int THRESHOLD = 10; ez*jjm  
Nn#u%xvJt  
/* (~()RkT  
* (non-Javadoc) SLoo:)  
* ~m`!;rE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) inF6M8 A1  
*/ Nl*i5 io  
public void sort(int[] data) { k/lFRi-i  
int[] temp=new int[data.length]; f=I:DkR  
mergeSort(data,temp,0,data.length-1); $(q8y/,R*-  
} Z nXejpj)D  
ax@H"d&  
private void mergeSort(int[] data, int[] temp, int l, int r) { f\K#>u* Q  
int i, j, k; ]rW8y%yD  
int mid = (l + r) / 2; ^?"^Pmw  
if (l == r) (wA?;]q(  
return; -7`-wu  
if ((mid - l) >= THRESHOLD) z[&s5"  
mergeSort(data, temp, l, mid); P*G+eqX  
else ,7,;twKz  
insertSort(data, l, mid - l + 1); +LzovC@^  
if ((r - mid) > THRESHOLD) 6/2v  
mergeSort(data, temp, mid + 1, r); JSW&rn  
else Eark)  
insertSort(data, mid + 1, r - mid); )U(u>SV(\  
`ROEV~  
for (i = l; i <= mid; i++) { 'sU)|W(3U  
temp = data; UR3$B%i  
} H_B~P%E@]  
for (j = 1; j <= r - mid; j++) { P5URvEnz:  
temp[r - j + 1] = data[j + mid]; |}S1o0v{(a  
} :vQM>9l7  
int a = temp[l]; agsISu(  
int b = temp[r]; p4mY0Y]mP  
for (i = l, j = r, k = l; k <= r; k++) { _#'9kx|)  
if (a < b) { aWaw&u  
data[k] = temp[i++]; *Bw#c j  
a = temp; nj2gs,k  
} else { W_<4WG  
data[k] = temp[j--]; Lq0 4T0  
b = temp[j]; ^ d\SPZ  
} ?q Xs-  
} v0 ];W|  
} uva\0q  
#IX&9 aFB}  
/** zj20;5o>U&  
* @param data Z"tQp Jg  
* @param l B8~= RmWLl  
* @param i 4/MNqit+  
*/ b UvK  
private void insertSort(int[] data, int start, int len) { 6tdI6  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )N)ljA3]  
} (I=6Nnt'  
} Efr&12YSS  
} [ud|dwP"  
} &O tAAE  
&jm[4'$ *z  
堆排序: 8"M<{72U]  
g rbTcLSF  
package org.rut.util.algorithm.support; cyMs(21  
"{( [!  
import org.rut.util.algorithm.SortUtil; K0<yvew  
9^zx8MRXd  
/** 2Xgx*'t\  
* @author treeroot D[~}uZ4\  
* @since 2006-2-2  cht  
* @version 1.0 Gvn: c/m;  
*/ ]u=Ca#!'  
public class HeapSort implements SortUtil.Sort{ PU+1=%'V  
Hsl{rN  
/* (non-Javadoc) ^saM$e^c:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7bT /KLU  
*/ xOIg|2^8  
public void sort(int[] data) { p7UTqKi  
MaxHeap h=new MaxHeap(); 1+^n!$  
h.init(data); l* Y[^'  
for(int i=0;i h.remove(); evOb  
System.arraycopy(h.queue,1,data,0,data.length); qGa<@ b  
} 0yTQ{'Cc  
b *9-}g:  
private static class MaxHeap{ c[{UI  
C BlXC7_Mi  
void init(int[] data){ XnY"oDg^>  
this.queue=new int[data.length+1]; ~:Ixmqi}R  
for(int i=0;i queue[++size]=data; o<J5!  
fixUp(size); .e$%[ )D  
} q{@P+2<wF  
} sVoR?peQ  
\HG$V>2  
private int size=0; >0V0i%inmF  
cY~M4:vgT  
private int[] queue; czS7-Hh@  
Ilef+V^qr  
public int get() { Nt,~b^9  
return queue[1]; *(nJX.7  
} jGiw96,Y  
Ky6+~>  
public void remove() { Y^3)!>  
SortUtil.swap(queue,1,size--); m&cvU>lC  
fixDown(1); $WClpvVj  
} Y?t2,cm   
file://fixdown eP?~- #  
private void fixDown(int k) { kp; &cQu!  
int j; mt^`1ekoY  
while ((j = k << 1) <= size) { Gc^t%Ue-H)  
if (j < size %26amp;%26amp; queue[j] j++; w&C1=v -h  
if (queue[k]>queue[j]) file://不用交换 3W'FcE)|E  
break; P'F~\**5  
SortUtil.swap(queue,j,k); -%=RFgU4  
k = j; Ge1duRGa  
} i*z0Jf["  
} D&f!( n  
private void fixUp(int k) { CPGL!:  
while (k > 1) {  feN!_ -  
int j = k >> 1; `x*/UCy\  
if (queue[j]>queue[k]) _G[6+g5|  
break; & L'6KEahR  
SortUtil.swap(queue,j,k); e3pnk =u  
k = j; ]Y=S  
} d QDLI  
} a_AJ)4  
( mt*y]p?  
} V:8@)Hc=  
vuW-}fY;  
} 01o [!nT  
| F8]Xnds  
SortUtil: c`pYc  
wE8]'o  
package org.rut.util.algorithm; p$XnOh  
3jS7 uU  
import org.rut.util.algorithm.support.BubbleSort; n@_)fFD%  
import org.rut.util.algorithm.support.HeapSort; RB *P0  
import org.rut.util.algorithm.support.ImprovedMergeSort; A`g.[7  
import org.rut.util.algorithm.support.ImprovedQuickSort; q6Rw4  
import org.rut.util.algorithm.support.InsertSort; y%FYXwR{  
import org.rut.util.algorithm.support.MergeSort; yE<,Z%J[n  
import org.rut.util.algorithm.support.QuickSort; # 'wL\3  
import org.rut.util.algorithm.support.SelectionSort; 1j+eD:d'  
import org.rut.util.algorithm.support.ShellSort; y{?Kao7Ij  
X4Lsvvz%@  
/** b70AJe=  
* @author treeroot fmBkB8  
* @since 2006-2-2 k}#@8n|b  
* @version 1.0 !@A|L#*  
*/ ]M uF9={  
public class SortUtil { y]w )`}Ax  
public final static int INSERT = 1; ~PCTLP~zI  
public final static int BUBBLE = 2; DVbYShB  
public final static int SELECTION = 3; ML"_CQlE7  
public final static int SHELL = 4; 5R)[Ou.  
public final static int QUICK = 5; M.X}K7Z_/  
public final static int IMPROVED_QUICK = 6; @ }ZGY^  
public final static int MERGE = 7; b#e]1Q  
public final static int IMPROVED_MERGE = 8; t&3 8@p  
public final static int HEAP = 9; ?~{r f:Y  
N-Qu/,~+  
public static void sort(int[] data) { `..EQ BM  
sort(data, IMPROVED_QUICK); % /~os2R  
} 5VuC U  
private static String[] name={ A(PE  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" g^qz&;R]  
}; 1xq3RD  
Ca$y819E2  
private static Sort[] impl=new Sort[]{ y(V&z"wk[  
new InsertSort(), ^kc>m$HY  
new BubbleSort(), \A` gK\/h  
new SelectionSort(), Q=^ktKMeR  
new ShellSort(), 1<;\6sg  
new QuickSort(), H^ESA s6  
new ImprovedQuickSort(), k>7gy?Y!K<  
new MergeSort(), (\T8!s{AO  
new ImprovedMergeSort(), 7sCR!0  
new HeapSort() N`J:^,H  
}; :P HUsy  
<Sz>ZIISd  
public static String toString(int algorithm){ M?QQr~a  
return name[algorithm-1]; %g!yccD9  
} -7&^jP\,  
B?$S~5  }  
public static void sort(int[] data, int algorithm) { c(QG4.)m  
impl[algorithm-1].sort(data); y>DfM5>  
} #FrwfJOV  
<\B],M1=s=  
public static interface Sort { v(i1Z}*b  
public void sort(int[] data); er&uC4Y]a  
} b #o}=m  
;D%$Eh&oma  
public static void swap(int[] data, int i, int j) { yg]suU<z]  
int temp = data; Oex{:dO "F  
data = data[j]; M!;`(_2  
data[j] = temp; j<`I\Pmv  
} 23(B43zy  
} n's2/9x  
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