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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。 o7gZc/?n  
插入排序: zWN]#W`  
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package org.rut.util.algorithm.support; Hl}m*9<9us  
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import org.rut.util.algorithm.SortUtil; :\mdVS!o  
/** <}mA>c'k  
* @author treeroot l"&iSq!3=  
* @since 2006-2-2 W`[7|8(6!  
* @version 1.0 $Q|6W &?[;  
*/ kQ[23  
public class InsertSort implements SortUtil.Sort{ 6."|m+D  
R4D$)D  
/* (non-Javadoc) >7?Lq<H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0/fwAp  
*/ F&k<P>k  
public void sort(int[] data) { nbw8YO(=  
int temp; x wfdJ(&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G=Xas"|  
} 5a5JOl$8  
} eHHU2^I,  
} <e|B7<.  
o`~,+6] D  
} .^- I<4.  
.lgm"  
冒泡排序: ()Img.TIt  
.<K9Zyi  
package org.rut.util.algorithm.support; p:| 7d\r  
D.F1^9Q  
import org.rut.util.algorithm.SortUtil; 3ug>,1:6-  
2_6@&2  
/** W$}2 $}r0U  
* @author treeroot 9y\Ik/  
* @since 2006-2-2 UOe@R|79q  
* @version 1.0 |o_ N$70  
*/ - Lsl  
public class BubbleSort implements SortUtil.Sort{ 3D,tnn+J  
HT_nxe`E  
/* (non-Javadoc) %~<F7qB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .L)j ql%  
*/ eH;{Ln  
public void sort(int[] data) { 4{$ L]toP  
int temp; 43`Atw`\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1LmbXH]%  
if(data[j] SortUtil.swap(data,j,j-1); Z'wGZ(  
} gE23C*!'&:  
} H'@@%nO (  
} "NV~lJS%  
} %u?A>$Jn  
P?=}}DI  
} ;MO,HdP;  
=EHKu|rX~  
选择排序: 4E$6&,\  
?R@u'4yK  
package org.rut.util.algorithm.support; [L2N[vy;  
f 0/q{*  
import org.rut.util.algorithm.SortUtil; _k)EqPYu@  
tac_MtW?  
/** `:gXQmt  
* @author treeroot UE/iq\a>  
* @since 2006-2-2 fo;^Jg.  
* @version 1.0 m.yt?`  
*/ @Bsvk9}  
public class SelectionSort implements SortUtil.Sort { J32"Ytdo<  
RHI?_gf&  
/* e=i9l  
* (non-Javadoc) dY?>:ce  
* ()_^:WQO?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xn<x/e  
*/ x,<|<W5<%  
public void sort(int[] data) { Gbb*p+ (  
int temp; wem hP8!gc  
for (int i = 0; i < data.length; i++) { dsZ-|C  
int lowIndex = i; <a(739IF  
for (int j = data.length - 1; j > i; j--) { [TmZ\t!5$  
if (data[j] < data[lowIndex]) { `$] ZT>&  
lowIndex = j; iT~ gt/K  
} k~iA'E0-  
} zrA =?[  
SortUtil.swap(data,i,lowIndex); P9gAt4i  
} 5BMrn0  
} ;C5 J ^xHI  
](k}B*Ab h  
} /,9n1|FrG  
AR)A <  
Shell排序: /6'5uP   
)4FW~o<i  
package org.rut.util.algorithm.support; l=>FoJf!*<  
X<:Zx#J?i  
import org.rut.util.algorithm.SortUtil; 7!g4`@!5M  
V4?]NFK  
/** XAUHF-"WE  
* @author treeroot 5Kkp1K$M  
* @since 2006-2-2 qc/)l~]?g{  
* @version 1.0 'DB'lP  
*/ ~#:R1~rh\e  
public class ShellSort implements SortUtil.Sort{ jGn2Q L  
rVb61$  
/* (non-Javadoc) }ho6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EE~DU;p;]  
*/ sWMY Lo  
public void sort(int[] data) { 7;ddzxR4  
for(int i=data.length/2;i>2;i/=2){ 1v9 #Fr Y  
for(int j=0;j insertSort(data,j,i); GOY!()F  
} 4#D>]AX  
} Z7=k$e  
insertSort(data,0,1); !?GW<Rh  
} LE+#%>z>  
4^K<RSYs  
/** jY $3   
* @param data _vOSOnU  
* @param j a_Z[@W  
* @param i ~J1UzUxX2  
*/ ;TCT%j`^o  
private void insertSort(int[] data, int start, int inc) { 3\?yjL^  
int temp; 6;}W)S  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6hf6Z 3  
} TE@bV9a  
} ds'7zxy/  
} *|.-y->  
a(K^/BT  
} NfXEW-  
oedLe9!  
快速排序: Si=u=FI1e  
[_3L  
package org.rut.util.algorithm.support; MY z\ R \  
x4/f5  
import org.rut.util.algorithm.SortUtil; j<-YK4.t  
?`=r@  
/** ^r^)  &]  
* @author treeroot O`'r:&#W  
* @since 2006-2-2 1y6{3AZm<  
* @version 1.0 Q|nGY:98  
*/ hv9k9i7@l  
public class QuickSort implements SortUtil.Sort{ f26hB;n  
e/y\P&"eI  
/* (non-Javadoc) y (=$z/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mzj|57:gx  
*/ "S0WFP\P+  
public void sort(int[] data) { Tf.DFfV#y  
quickSort(data,0,data.length-1); K`twbTU  
} FSkz[D_}  
private void quickSort(int[] data,int i,int j){ s)V<dm;T  
int pivotIndex=(i+j)/2; njBK{  
file://swap 2!g7F`/B  
SortUtil.swap(data,pivotIndex,j); L%0G >2x  
W4S! rU  
int k=partition(data,i-1,j,data[j]); hD>cxo  
SortUtil.swap(data,k,j); E9v_6d[  
if((k-i)>1) quickSort(data,i,k-1); F@kd[>/[  
if((j-k)>1) quickSort(data,k+1,j); = GZ,P (  
s92SN F}g  
} 2sahb#e )  
/** +jGSD@32>  
* @param data bv4G!21]*;  
* @param i W3 2]#M=  
* @param j uxD$dd?  
* @return .a]9rQQ&_  
*/ 6,Y<1b*|Vo  
private int partition(int[] data, int l, int r,int pivot) { VgcLG ]tE[  
do{ l5CFm8%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x10u?@  
SortUtil.swap(data,l,r); "'*w_H0  
} okQ<_1e{  
while(l SortUtil.swap(data,l,r); J=AF`[  
return l; ?bH!|aW(H  
} /nVGr]t_pj  
|lVoL.Z,0  
} rnS&^  
VL| q`n  
改进后的快速排序: Z-rHYfa4  
TAKv E=a;  
package org.rut.util.algorithm.support; ,p[9EW*8  
)~H&YINhn  
import org.rut.util.algorithm.SortUtil; #Bi8>S  
B0"55g*c  
/**  nypG  
* @author treeroot 0XUWK@)P  
* @since 2006-2-2 ;]sbz4?  
* @version 1.0 &u~#bDh  
*/ Tt\G y  
public class ImprovedQuickSort implements SortUtil.Sort { (|.rEaTA[1  
oS Apa  
private static int MAX_STACK_SIZE=4096; O#B2XoZa+  
private static int THRESHOLD=10; OCN@P+L3q  
/* (non-Javadoc) HMPb%'U~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DNy 6Kw  
*/ 8AuOe7D9A  
public void sort(int[] data) { a?ux  
int[] stack=new int[MAX_STACK_SIZE]; >`=<(8bu  
e)A-.SRiO$  
int top=-1; ~Rk ~Zn  
int pivot; 0`%Ask  
int pivotIndex,l,r; We?cRb  
.Arcsg   
stack[++top]=0; xdkC>o4>  
stack[++top]=data.length-1;  mPS27z(  
& ( i_s  
while(top>0){ ;{f4E)t 7  
int j=stack[top--]; P QA}_o  
int i=stack[top--]; 6PdLJ#LS  
6Dz N.fz  
pivotIndex=(i+j)/2; )HJ#|JpxC  
pivot=data[pivotIndex]; :*dfP/GO  
&_ W~d0  
SortUtil.swap(data,pivotIndex,j); n|AV7c  
p^THoF'~T  
file://partition ,)%$Zxng  
l=i-1; }?^5L7n  
r=j; +X|^ ~)tMJ  
do{  "DsL$D2e  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); w-wap  
SortUtil.swap(data,l,r); /7jb&f   
} m%)Cw)t 7  
while(l SortUtil.swap(data,l,r); II) K0<  
SortUtil.swap(data,l,j); %+0V0.  
8m"jd+  
if((l-i)>THRESHOLD){ '4]_~?&x  
stack[++top]=i; HGl.dO 7NU  
stack[++top]=l-1; =@y ?Np^A  
} ~zph,bk  
if((j-l)>THRESHOLD){ o GN*p_g  
stack[++top]=l+1; /+ Q3JS(  
stack[++top]=j; l7vxTj@(-  
} AOscewQ  
((cRe6  
}  G%5ZG$as  
file://new InsertSort().sort(data); lXOT>$qR<  
insertSort(data); qEajT"?  
} {dXmSuO  
/** }(/\vTn*1  
* @param data c 4Wl^E 8  
*/ xnvG5  
private void insertSort(int[] data) { r%412 #  
int temp; t5;)<N`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ze"m;T  
} @e:= D  
} / lDei}  
} Z )'gj  
ne9- c>>  
} Z,1b$:+  
~>B`T%=H  
归并排序: r}i}4K[1  
45.Vr[FS.  
package org.rut.util.algorithm.support; >vKOG@I  
#b wGDF  
import org.rut.util.algorithm.SortUtil; #$ooV1E  
HvLx  
/** A5?q&VS}p  
* @author treeroot "< })X.t  
* @since 2006-2-2 X;7hy0Y  
* @version 1.0 CWa~~h<r-  
*/ B!1Bg9D  
public class MergeSort implements SortUtil.Sort{ 7ro&Q%  
pj#ls  
/* (non-Javadoc) 4=qZ Z>[t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4~ i?xo=;v  
*/ Ld?'X=eQ  
public void sort(int[] data) { yZQcxg%  
int[] temp=new int[data.length]; PWk\#dJN&  
mergeSort(data,temp,0,data.length-1); LDh,!5G-M  
} }*?,&9/_)  
9Yd"Y-   
private void mergeSort(int[] data,int[] temp,int l,int r){ `lA_knS  
int mid=(l+r)/2; ?Sr7c|a2  
if(l==r) return ; > PK 6CR  
mergeSort(data,temp,l,mid); u\Y3h:@u  
mergeSort(data,temp,mid+1,r); ]\m >N]P]  
for(int i=l;i<=r;i++){ qPoN 8>.  
temp=data; Q)Q1a;o  
} |Pi! UZB  
int i1=l; xO&qo8*  
int i2=mid+1; -CLBf'a  
for(int cur=l;cur<=r;cur++){ c<,R,D R  
if(i1==mid+1) u~7fK  
data[cur]=temp[i2++]; E<sd\~~A:  
else if(i2>r) JA~q}C7A7o  
data[cur]=temp[i1++]; Y49&EQ  
else if(temp[i1] data[cur]=temp[i1++]; N;gY5;0m  
else aM+Am,n`@  
data[cur]=temp[i2++]; B *%ey?  
} )kDB*(?  
} nrg$V>pD  
d9up! k  
} QJ+Ml  
dngG=  
改进后的归并排序: M $f6. j  
!<>*|a  
package org.rut.util.algorithm.support; eZBC@y  
 h@PE:=  
import org.rut.util.algorithm.SortUtil; Ot`znJU@  
jN-!1O._G  
/** AQwai>eL  
* @author treeroot |k^C-  
* @since 2006-2-2 1gQ_76Yck  
* @version 1.0 #I1q,fm  
*/ >t{-_4Yv?  
public class ImprovedMergeSort implements SortUtil.Sort { #>6Jsnv1  
X0Wx\xDg[  
private static final int THRESHOLD = 10; R@){=8%z  
d hjX[7Bl9  
/* SY.ZEJcv  
* (non-Javadoc) Qk >9o  
* Vh?RlIUA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WPAT\Al&AE  
*/ ne: 'aq  
public void sort(int[] data) { vi28u xc  
int[] temp=new int[data.length]; ZUkM8M$c  
mergeSort(data,temp,0,data.length-1); C_Z/7x*>d  
} 3 Ak'Ue  
;Yt+ {pI  
private void mergeSort(int[] data, int[] temp, int l, int r) { [bw1!X3  
int i, j, k; n?;h-KKO:  
int mid = (l + r) / 2; SlG^ H  
if (l == r) j WSgO(y  
return; }Ogb|8  
if ((mid - l) >= THRESHOLD) JIIc4fyy8s  
mergeSort(data, temp, l, mid); hpgOsF9Lh  
else <4n"LJ9  
insertSort(data, l, mid - l + 1); 6_:I~TTX  
if ((r - mid) > THRESHOLD) 9kh MG$  
mergeSort(data, temp, mid + 1, r); [(eX\kL  
else 1_};!5$.  
insertSort(data, mid + 1, r - mid); -y>~ :.  
<<b]v I  
for (i = l; i <= mid; i++) {  +#\7 #Y  
temp = data; ex BLj *]  
} ?GlXxx=eV  
for (j = 1; j <= r - mid; j++) { Si@ 6'sw  
temp[r - j + 1] = data[j + mid]; N\];{pe>  
} TB-dV'w  
int a = temp[l]; XhA tf @n  
int b = temp[r]; I{h KN V  
for (i = l, j = r, k = l; k <= r; k++) { 0' oXA'L-J  
if (a < b) { Y'5(exW  
data[k] = temp[i++]; KaX*) P  
a = temp; P aeq  
} else { s/.P/g%tA>  
data[k] = temp[j--]; N6v?Qzvi  
b = temp[j]; cg o  
} &>B"/z  
} 8Ihl}aguW  
} jZC[_p;  
IJt'[&D  
/** d14n>  
* @param data G$2@N6  
* @param l Oxa8ue?  
* @param i >cLh$;l  
*/ no W]E}nN  
private void insertSort(int[] data, int start, int len) { |}.}q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zvVo-{6  
} t0GJ$])  
} hNhEA $X5  
} { 0-on"o  
} %<!YjJ  
z:$ibk4#h  
堆排序: ) P>/g*  
}Z{FPW.QK  
package org.rut.util.algorithm.support; !l=)$RJKdD  
YCQ $X  
import org.rut.util.algorithm.SortUtil; uT'l.*W6i  
rwVp}H G  
/** e#,(a  
* @author treeroot JXMH7  
* @since 2006-2-2 lx=tOfj8  
* @version 1.0 ]%y>l j?Y  
*/ *c [^/  
public class HeapSort implements SortUtil.Sort{ ma+AFCi  
~\AF\n%  
/* (non-Javadoc) UfPHV%Wd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gw\..O  
*/ A*wf: mW0c  
public void sort(int[] data) { &^#u=w?^x  
MaxHeap h=new MaxHeap(); <e?Eva%t`  
h.init(data); 8Y.9%@  
for(int i=0;i h.remove(); $XTtDUP@  
System.arraycopy(h.queue,1,data,0,data.length); jz! [#-G  
} g&85L$   
KN[;z2i  
private static class MaxHeap{ !yxqOT-  
ZZ!">AN`^  
void init(int[] data){ 8I *N  
this.queue=new int[data.length+1]; * m^\&  
for(int i=0;i queue[++size]=data; vy *-"=J  
fixUp(size); D4,>g )B  
} #CaPj:>[  
} PkI+z_  
v&'#Gg  
private int size=0; q[C?1Kc .z  
9O:l0 l  
private int[] queue; x(vQ %JC  
g27'il  
public int get() { 9aY8`B  
return queue[1]; mHHlm<?]  
} nvT@ 'y+  
)t"-#$,@  
public void remove() { IlB8~{p_  
SortUtil.swap(queue,1,size--); L/r_MtN  
fixDown(1); P3: t 4^  
} Hj|&P/jY]*  
file://fixdown 4&;iORw&E4  
private void fixDown(int k) { jT =|!,Pn  
int j; l"%80"zO  
while ((j = k << 1) <= size) { iGu%_-S  
if (j < size %26amp;%26amp; queue[j] j++; Wz s=BNm9  
if (queue[k]>queue[j]) file://不用交换 eF22 ~P  
break; cl2_"O  
SortUtil.swap(queue,j,k); Y55u -9|N  
k = j; UJSIbb5  
} _OTVQo Ap  
} Bskp&NV':  
private void fixUp(int k) { Tk4>Jb  
while (k > 1) { Lr D@QBT  
int j = k >> 1; j}eb _K+I  
if (queue[j]>queue[k]) DkEv1]6JI_  
break; L;%w{,Ji  
SortUtil.swap(queue,j,k); ~(ke'`gJ0-  
k = j; G:":CX"O(  
} 5EcVW|(  
} UGI<V!  
wCB*v<*  
} v={{ $=/t  
~}}<+JEEO  
} 1.F&gP)9  
rBNVI;JZW  
SortUtil: o #e8 Piw  
p8_^6wfg  
package org.rut.util.algorithm; ]*\MIz{56'  
hj9TiH/+  
import org.rut.util.algorithm.support.BubbleSort; Td|u@l4B  
import org.rut.util.algorithm.support.HeapSort; GQn:lu3j:  
import org.rut.util.algorithm.support.ImprovedMergeSort; %7)TiT4V  
import org.rut.util.algorithm.support.ImprovedQuickSort; 3X`9&0:j%  
import org.rut.util.algorithm.support.InsertSort; v}6iI}r  
import org.rut.util.algorithm.support.MergeSort; )x7n-|y6  
import org.rut.util.algorithm.support.QuickSort; 0bDc 4m  
import org.rut.util.algorithm.support.SelectionSort; \X:e9~  
import org.rut.util.algorithm.support.ShellSort; oT):#,s  
M}x%'=Pox  
/** **Ioy+  
* @author treeroot iVI&  
* @since 2006-2-2 %S^hqC  
* @version 1.0 05 q760I+  
*/ bGH#s {'5  
public class SortUtil { j)mU`b_  
public final static int INSERT = 1; A~bSB n: '  
public final static int BUBBLE = 2; _|#abLh%  
public final static int SELECTION = 3; N3|:MMl  
public final static int SHELL = 4; lx%c&~.DiB  
public final static int QUICK = 5; -[L\:'Gp5  
public final static int IMPROVED_QUICK = 6; tF`L]1r>  
public final static int MERGE = 7; F,wB6Cw  
public final static int IMPROVED_MERGE = 8; 'F/oR/4,  
public final static int HEAP = 9; h#hr'3bI1  
_xaum  
public static void sort(int[] data) { {r&mNbz  
sort(data, IMPROVED_QUICK); 6:#o0OeBP  
} K=[7<b,:3  
private static String[] name={ tb+gCs'D  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h9H z6 >  
}; 5qtk#FB  
 j%Au0k  
private static Sort[] impl=new Sort[]{ rUb{iU;~m  
new InsertSort(), lPR=C0h}@  
new BubbleSort(), szsVk#p  
new SelectionSort(), 9&eY<'MgP  
new ShellSort(), c`!e#w  
new QuickSort(), \34vE@V*  
new ImprovedQuickSort(), @ep.wW  
new MergeSort(), N>H@vt~  
new ImprovedMergeSort(), STW?0B'Jr  
new HeapSort() Ay?<~)H  
}; rv*{[K  
L3, /7  
public static String toString(int algorithm){ c| ^I}  
return name[algorithm-1]; SsZC g#i  
} ?Ij(B}D  
T7 ,]^ 1  
public static void sort(int[] data, int algorithm) { `MOw\Z)..  
impl[algorithm-1].sort(data); M*zpl}  
} @sLN  
+#FqC/`l  
public static interface Sort { 7 m{lOR  
public void sort(int[] data); !cyrt<  
} '? 5-  
^5sA*%T4  
public static void swap(int[] data, int i, int j) { PXMd=,}  
int temp = data; w.?4}'DK  
data = data[j]; vhfjZ  
data[j] = temp; MYS`@%ZV#k  
} w \b+OW  
} wXQxZuk[  
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