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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。 q*2N{  
插入排序: lWqrU1Sjl  
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package org.rut.util.algorithm.support; tUgEeh6  
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import org.rut.util.algorithm.SortUtil; '3<fsK=  
/** TpHfS]W-P  
* @author treeroot [+OnV&  
* @since 2006-2-2 -.T&(&>^  
* @version 1.0 S-YM%8A[  
*/ 6$ Gep  
public class InsertSort implements SortUtil.Sort{ ~_s{0g]B  
1P(|[W1  
/* (non-Javadoc) xCYE B}o9r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T}4/0yR2  
*/ CYKr\DA  
public void sort(int[] data) { b*FC\ :\  
int temp; Vo7dAHHL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _z54Ycr4H  
} xY$iz)^0&  
} Bf$_XG3  
} cZ<A0  
E=cwq"  
} 8X I?  
Ton94:9bZ  
冒泡排序: l983vKr  
fPrLM'  
package org.rut.util.algorithm.support; JR@.R ,rII  
OQ,NOiNkap  
import org.rut.util.algorithm.SortUtil; cetvQAGXY  
o,xxh  
/** 9 Rx s  
* @author treeroot +n7?S~R$  
* @since 2006-2-2 XfKo A0  
* @version 1.0 1Jj Y!  
*/ \tRG1&{$%  
public class BubbleSort implements SortUtil.Sort{ Nr0 (E   
[|lB5gi4t!  
/* (non-Javadoc) oX4q`rt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fd#j Y}  
*/ '}rRzD:  
public void sort(int[] data) { nN~~cV  
int temp; N |1>ooU[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ #_B-4sm  
if(data[j] SortUtil.swap(data,j,j-1); Cn_$l>  
} FVKW9"AyW  
} [j"9rO" +  
} m] W5+  
} .)+h H y  
|TE}`?y[g  
} 6O@J7P  
[lk'xzE  
选择排序: @A+RVg*=  
fRfn2jA)d  
package org.rut.util.algorithm.support; < Z|Ep1W  
a,o_`s<  
import org.rut.util.algorithm.SortUtil; ;r /;m\V  
tV9L D>3  
/** ,KJw|x4}\  
* @author treeroot jAh2N3)  
* @since 2006-2-2 9 C{;h  
* @version 1.0 ?go:e#  
*/ uHIiH@ S  
public class SelectionSort implements SortUtil.Sort { w0ZLcND{  
~w</!s  
/* {}o>{&X  
* (non-Javadoc) ?+c`]gO7N  
* TrdZJ21#M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X1tXqHJF}  
*/ 5/QRL\  
public void sort(int[] data) { efG6v  
int temp; i-U4RZE  
for (int i = 0; i < data.length; i++) { Ke-)vPc  
int lowIndex = i; QR">.k4QJ  
for (int j = data.length - 1; j > i; j--) { l/y]nw  
if (data[j] < data[lowIndex]) { CU:o*;jP  
lowIndex = j; @FN*TJ  
} |xoF49  
} D^U: ih  
SortUtil.swap(data,i,lowIndex); d/74{.  
} j%V["?)  
} }<jb vCeK  
LwuF0\  
} <As9>5|%  
qpJ{2Q  
Shell排序: K~RoUE<3[  
O;HY%  
package org.rut.util.algorithm.support; qP!P +'B  
CJaKnz  
import org.rut.util.algorithm.SortUtil; ]=73-ywn]  
*FR$vLGn  
/** 0(8H;T  
* @author treeroot Lh$dzHq  
* @since 2006-2-2 O)R(==P26P  
* @version 1.0 E3/:.t  
*/  6qo^2  
public class ShellSort implements SortUtil.Sort{ 5wC* ?>/  
m+$ @'TbP  
/* (non-Javadoc) W</n=D<,I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n uQM^2  
*/ Z< b"`ty.  
public void sort(int[] data) { {}>n{_  
for(int i=data.length/2;i>2;i/=2){ Zt3}Z4d  
for(int j=0;j insertSort(data,j,i); M~6@20$oW  
} *B)yy[8j+  
} Lp:6 ;  
insertSort(data,0,1); ;%q39U}  
} zGcqzYbuA  
CPazEe1S  
/** ;SKh   
* @param data YJ7V`N p  
* @param j ~H@+D}J?  
* @param i ^%oUmwP<$  
*/ xcCl (M]+  
private void insertSort(int[] data, int start, int inc) { K=u0nrG*  
int temp; M"^K 0 .  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u~ F ;x Q  
} @u4=e4eF`  
} t]_S  
} |@VF.)_  
=)<3pGO  
} MXAEX2xmme  
9|:^k.  
快速排序: @O3/3vi1  
,qFA\cO*  
package org.rut.util.algorithm.support; p_terD:  
Db03Nk>#  
import org.rut.util.algorithm.SortUtil; =LH}YUmd  
j=sBq.S  
/** 7$T8&Mh  
* @author treeroot d;suACW  
* @since 2006-2-2 6!7Pm>ml  
* @version 1.0 U1m\\<,  
*/ L-'k7?%(  
public class QuickSort implements SortUtil.Sort{ cz.3|Lby  
<DiOWi  
/* (non-Javadoc) XdIah<F2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m3 IP7h'  
*/ iK}v`xq  
public void sort(int[] data) { *=nO  
quickSort(data,0,data.length-1); EnCU4CU`  
} w6,*9(;$Pk  
private void quickSort(int[] data,int i,int j){ c;V D}UD'  
int pivotIndex=(i+j)/2; 6Dzs?P  
file://swap Kmry=`=A  
SortUtil.swap(data,pivotIndex,j); 1$["79k  
?n*fy  
int k=partition(data,i-1,j,data[j]); ,Aa|Bd]b  
SortUtil.swap(data,k,j); 1Ii| {vR  
if((k-i)>1) quickSort(data,i,k-1); <?|6*2_=  
if((j-k)>1) quickSort(data,k+1,j); R7aXR\ R  
*wUdC  
} zA{8C];~  
/** 6F5,3&  
* @param data m "]!I~jd  
* @param i ER<eX4oU  
* @param j .Vh*Z<9S4  
* @return 0eA5zFU7  
*/ <d! 6[,W;  
private int partition(int[] data, int l, int r,int pivot) { <9 },M  
do{ T +\B'"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); a/e\vwHLv  
SortUtil.swap(data,l,r); hZF(/4Z2  
} n0FYfqH  
while(l SortUtil.swap(data,l,r); qBiyGlu4  
return l; q!2<=:f  
} {,v: GMsm  
'^1o/C  
} ^Jtl;Q  
TolrEcI  
改进后的快速排序: QZ0R:TY  
pX]21&F  
package org.rut.util.algorithm.support; Qdm(q:w  
&<{}8/x8(  
import org.rut.util.algorithm.SortUtil; ylim/`u}6  
{kG;."S+K  
/** !&0a<~ Wi  
* @author treeroot #fzw WP  
* @since 2006-2-2 iE+6UK  
* @version 1.0 K051usm  
*/ LO}z)j~W  
public class ImprovedQuickSort implements SortUtil.Sort { %%x0w^  
nr<.YeJ  
private static int MAX_STACK_SIZE=4096; L`pY27 |  
private static int THRESHOLD=10; b\M b*o  
/* (non-Javadoc) j #es2;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Avd *~  
*/ 2b~ HHVruX  
public void sort(int[] data) { +<B|qcT!  
int[] stack=new int[MAX_STACK_SIZE]; G)4SWu0<t  
}_vM&.GFlL  
int top=-1; k?n]ZNlT  
int pivot; jB/V{Y#y9@  
int pivotIndex,l,r; :OX$LCi  
[^Q&suy  
stack[++top]=0; ,-!2 5G  
stack[++top]=data.length-1; k)Zn>  
h/{8bC@bi  
while(top>0){ "bi  !=  
int j=stack[top--]; fxOE]d8v  
int i=stack[top--]; :=Nb=&lst  
0ovZ&l  
pivotIndex=(i+j)/2; b<8q 92F  
pivot=data[pivotIndex]; *n;>p_#  
9G+y.^/6  
SortUtil.swap(data,pivotIndex,j); ;i}i5yv2  
4"z;CGE7  
file://partition K^8@'#S  
l=i-1; 3 ^pYC K%  
r=j; {DSyV:   
do{ {dDq*sLf  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); u9 %;{:]h  
SortUtil.swap(data,l,r);  Hl!1h%  
} \y@ eBW  
while(l SortUtil.swap(data,l,r); e7h\(`J0lj  
SortUtil.swap(data,l,j); nQ!N}5[z'  
|c=d;+  
if((l-i)>THRESHOLD){ >2nF"?"=  
stack[++top]=i; a4:`2  
stack[++top]=l-1; hl*MUD,  
} FzA{U O  
if((j-l)>THRESHOLD){ x Ridc^  
stack[++top]=l+1; R !jhwY$  
stack[++top]=j; >J9IRAm}sc  
} B*32D8t`u  
vi^z5n  
} Vn@A]Jx^  
file://new InsertSort().sort(data); *h>OW  
insertSort(data); 4$ ..r4@  
} pb~Ps#"Zg  
/** FYxUOO  
* @param data md.*  
*/ nR(#F9  
private void insertSort(int[] data) { (H'_KPK  
int temp; 58qaA\iw  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *oKgP8CF  
} |}l@w +N3  
} Ma% E&.ed  
} /,=Wy"0TJ  
8[vl3C  
} pHq{S;R2G  
~3LhcU-  
归并排序: ?psOj%  
W ]a7&S  
package org.rut.util.algorithm.support; Dh*~U :6$g  
cpP.7ZR  
import org.rut.util.algorithm.SortUtil; 40`9t Xn  
BnY\FQ)K  
/** T3=-UYx]  
* @author treeroot #p11D= @[  
* @since 2006-2-2 ,e}mR>i=e  
* @version 1.0 3(oZZz  
*/ $}^Rsv(  
public class MergeSort implements SortUtil.Sort{ iKP\/LR<n  
uJ2C+$=Ul  
/* (non-Javadoc) ^EnNbFI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w*|=k~z  
*/ 4WBo ZJ  
public void sort(int[] data) { eH"qI2A  
int[] temp=new int[data.length]; A>rWGo.{E  
mergeSort(data,temp,0,data.length-1); C*Y :w  
} 75QXkJu  
]%vGC^  
private void mergeSort(int[] data,int[] temp,int l,int r){ d()zW7}W  
int mid=(l+r)/2; +35)=Uov  
if(l==r) return ; '#pMEVP  
mergeSort(data,temp,l,mid); %zIl_/s  
mergeSort(data,temp,mid+1,r); ^Yg|P&e(;  
for(int i=l;i<=r;i++){ f4A4  
temp=data; |wyJh"4!  
} (50[,:#  
int i1=l; 0|K/=dh5+  
int i2=mid+1; b7>,-O  
for(int cur=l;cur<=r;cur++){ gKm@B{rC  
if(i1==mid+1) [F BCz>  
data[cur]=temp[i2++]; <IHFD^3|j  
else if(i2>r) ]ft~OqLg!  
data[cur]=temp[i1++]; % RBI\tj  
else if(temp[i1] data[cur]=temp[i1++]; T9U2j-lA?  
else X+'^ Sp  
data[cur]=temp[i2++]; <?=mLOo =  
} _taHf %\4  
} 5* o\z&*L  
D~i@. k  
} 9FIe W[  
U||w6:W5  
改进后的归并排序: h.}t${1ZC  
8R??J>h5\  
package org.rut.util.algorithm.support; vS24;:f  
 i?i7T`  
import org.rut.util.algorithm.SortUtil; F`ZIc7(.{  
%M0mwty]  
/** W2W2WyPk  
* @author treeroot 6yl;o_6:  
* @since 2006-2-2 j~,LoGuPh  
* @version 1.0 Jv4D^>yj[  
*/ gw&#X~em  
public class ImprovedMergeSort implements SortUtil.Sort { ~y-vKCp|  
vxilQp  
private static final int THRESHOLD = 10; kT } '"  
|au qj2  
/*   L@k;L  
* (non-Javadoc) rO?x/{;ai  
* tM PX vE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jn <^Q7N  
*/ Y +_5"LV  
public void sort(int[] data) { S'-`\%@7  
int[] temp=new int[data.length]; gt t$O  
mergeSort(data,temp,0,data.length-1); mP$G9R  
} T m@1q!G  
b#I*~  
private void mergeSort(int[] data, int[] temp, int l, int r) { |n6 Q  
int i, j, k; -C'X4C+  
int mid = (l + r) / 2; ~ Dp:j*H  
if (l == r) 1-NX>E5  
return; FG5c:Ep  
if ((mid - l) >= THRESHOLD) | 8L`osg  
mergeSort(data, temp, l, mid); _l{ 5 'm  
else 72`/xryY  
insertSort(data, l, mid - l + 1); ]20 "la5  
if ((r - mid) > THRESHOLD) X-N$+[#  
mergeSort(data, temp, mid + 1, r); hte9l)  
else T;[c<gc/  
insertSort(data, mid + 1, r - mid); n40MP5RxY  
|Q)w3\S$  
for (i = l; i <= mid; i++) { \Af|$9boHz  
temp = data; Y\z\{JW  
} .iN*V|n  
for (j = 1; j <= r - mid; j++) { LI|HET_  
temp[r - j + 1] = data[j + mid]; c.{&~  
} d,rEEc Y  
int a = temp[l]; BfE-s<  
int b = temp[r]; x^O2Lj,w\  
for (i = l, j = r, k = l; k <= r; k++) { pn%|;  
if (a < b) { 6p=xgk-q  
data[k] = temp[i++]; q>:&xR"ra  
a = temp; =O'%)Y&  
} else { 8~Hs3\Hp  
data[k] = temp[j--]; aLk2#1$g  
b = temp[j]; Nx (pJp{S  
} AW&s-b%P  
} p,u<g JUL  
} [O+^eE6h  
o4 g  
/** $~@096`QL<  
* @param data ApJf4D<V  
* @param l F4<2.V)#-  
* @param i Hr*Pi3dSI  
*/ ^RAFmM#F  
private void insertSort(int[] data, int start, int len) { |21hY  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *^+xcG  
}  <IDzv'  
} "sx&8H"  
} N5Mz=UgB  
} wVJFA1  
%e<dV\x?T  
堆排序: HgATH  
(4f9wrK  
package org.rut.util.algorithm.support; U@5Z9/n{  
LbbQ3$@ WD  
import org.rut.util.algorithm.SortUtil; N~J Eia%  
}~'Wz*Gm  
/** `srZ#F5  
* @author treeroot Od]xIk+E  
* @since 2006-2-2 bCe-0!Q  
* @version 1.0 >D4Ez  
*/ gbf=H8]  
public class HeapSort implements SortUtil.Sort{ g2<S4  
9ufs6 z  
/* (non-Javadoc) 10IPq#Jj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aB!Am +g  
*/ f:&OOD o  
public void sort(int[] data) { rg/vxTl  
MaxHeap h=new MaxHeap(); +M&S  
h.init(data); H^:|`T|,  
for(int i=0;i h.remove(); ucPMT0k  
System.arraycopy(h.queue,1,data,0,data.length); 2B dr#qr  
} $-fY8V3[  
&)jZ|Q~  
private static class MaxHeap{ B&N&eRAE  
|bnjC$b*  
void init(int[] data){ t+J6P)=  
this.queue=new int[data.length+1]; *v/*_6f*  
for(int i=0;i queue[++size]=data; J3^ZPW  
fixUp(size); A_|FsQ6$P  
} beZ| i 1:  
} h18y?e7MU  
MXV4bgltT  
private int size=0; S9oGf  
z5vI0 N$  
private int[] queue; ~GYtU9s5  
C~V$G}mM  
public int get() { S\!E;p  
return queue[1]; w/6@R 4)p  
} P< x  
V/}8+Xq  
public void remove() { %([H*sLX  
SortUtil.swap(queue,1,size--); mP[u[|]  
fixDown(1); cSk}53  
} V7_??L%Ct`  
file://fixdown cpnwx1q@  
private void fixDown(int k) { :%MWbnVSC,  
int j;  |?A-?-  
while ((j = k << 1) <= size) { e*s{/a?,  
if (j < size %26amp;%26amp; queue[j] j++; Dx'e+Bm  
if (queue[k]>queue[j]) file://不用交换 P,_E 4y  
break; 5wX>PJS  
SortUtil.swap(queue,j,k); K_n%`5  
k = j; q /?_djv  
} m5{SPa,y  
}  64fG,b  
private void fixUp(int k) { }*.*{I  
while (k > 1) { Y\sjm]_  
int j = k >> 1; Z- (HDn  
if (queue[j]>queue[k]) 063;D+  
break; '%N)(S`O7P  
SortUtil.swap(queue,j,k); `f]O  
k = j; .SN]hLV5  
} |3m%d2V*hF  
} vE(Hy&Q&  
mM.&c5U  
} 2wQ CQ"  
9MxGyGz$  
} mX^RSg9E}  
{IWb:p#I]  
SortUtil: K>y+3HN[6  
za7wNe(s  
package org.rut.util.algorithm; PAkW[;GSDh  
LKcrr;  
import org.rut.util.algorithm.support.BubbleSort; {'!~j!1'j  
import org.rut.util.algorithm.support.HeapSort; 4NV1v&"  
import org.rut.util.algorithm.support.ImprovedMergeSort; x{$NstGB  
import org.rut.util.algorithm.support.ImprovedQuickSort; rej[G!  
import org.rut.util.algorithm.support.InsertSort; O5 SX"A  
import org.rut.util.algorithm.support.MergeSort; ~\P.gSiz  
import org.rut.util.algorithm.support.QuickSort; Kl?1)u3^4  
import org.rut.util.algorithm.support.SelectionSort; M &J*I  
import org.rut.util.algorithm.support.ShellSort; zdCt#=QV?R  
zlE kP @)  
/** qb&*,zN  
* @author treeroot zeX?]@]Y  
* @since 2006-2-2 z61 o6mb  
* @version 1.0 S[M$>  
*/ EX_& wep@1  
public class SortUtil { /l L*U  
public final static int INSERT = 1; G1rgp>m  
public final static int BUBBLE = 2; Lst5  
public final static int SELECTION = 3; YC~+r8ME$j  
public final static int SHELL = 4; &D:88   
public final static int QUICK = 5; GfDA5v[  
public final static int IMPROVED_QUICK = 6; +\4=G@P.J  
public final static int MERGE = 7; Sc&_6} K  
public final static int IMPROVED_MERGE = 8; L6T_&AiL$  
public final static int HEAP = 9; 2;/hFwm  
bTj,5,8 i  
public static void sort(int[] data) { TUG3#PSnm*  
sort(data, IMPROVED_QUICK); #/T)9=m  
} ]P.S5s'  
private static String[] name={ ^IpS 3y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W8)GT`\  
}; E%TvGe;#  
VuGSP]$q  
private static Sort[] impl=new Sort[]{ %llG/]q#  
new InsertSort(), \gdd  
new BubbleSort(), ^#+9v  
new SelectionSort(), t1kD5^  
new ShellSort(), 79\ =)m}$Q  
new QuickSort(), ,M9'S;&^  
new ImprovedQuickSort(), 7r>^_aW  
new MergeSort(), 52oR^ |  
new ImprovedMergeSort(), tZJKB1#WbP  
new HeapSort() --FvE|I  
}; ~/t# J  
DGcd|>q  
public static String toString(int algorithm){ {+!_; zzZ  
return name[algorithm-1]; `+U-oqs  
} t^q/'9Ai&J  
[* Lh4K  
public static void sort(int[] data, int algorithm) { xaPTTa  
impl[algorithm-1].sort(data); Mf?4 `LM  
} M:ttzsd  
Q?~l=}2  
public static interface Sort { #N*~Q  
public void sort(int[] data); T+I|2HYqOj  
} 74Lq!e3hMF  
<3i!{"}  
public static void swap(int[] data, int i, int j) { -50|r;a  
int temp = data; wDn5|F}i&  
data = data[j]; |KuH2, n0  
data[j] = temp; x,n;GR  
} ur;8uv2o  
} T7[ItLZ  
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