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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。 \zVp8MMf  
插入排序: ;N!n06S3  
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package org.rut.util.algorithm.support; _j$V[=kdM/  
7 HL Uk3  
import org.rut.util.algorithm.SortUtil; sk5=$My  
/** OvdBUcp[  
* @author treeroot +:#g6(P]  
* @since 2006-2-2 BB,-HhYT0  
* @version 1.0 #\F8(lZ  
*/ 9[{q5  
public class InsertSort implements SortUtil.Sort{ F9w2+z.  
kdA]gpdw  
/* (non-Javadoc) Z^F>sUMR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tm34Z''.>  
*/ mFpj@=^_G  
public void sort(int[] data) { y54RD/`-  
int temp; oM n'{+(w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8f?o?c|  
} ~Gg19x.#uW  
} `h'Ab63  
} %,N-M]Jf  
"}uu-5]3  
} T?n[1%K  
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冒泡排序: C>l (4*S  
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package org.rut.util.algorithm.support; (s1iYK  
F":dS-u&L  
import org.rut.util.algorithm.SortUtil; 1:h(8%H@"  
y}QqS/  
/** _n*gj-  
* @author treeroot '+|uv7|+v  
* @since 2006-2-2 <+ <o X"I  
* @version 1.0 /KiaLS  
*/ {dl@ #T u  
public class BubbleSort implements SortUtil.Sort{ EA:_PBZ  
s0Y7`uD^  
/* (non-Javadoc)  !vr A\d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W70BRXe04D  
*/ %&O'>L  
public void sort(int[] data) { _=5\$6  
int temp; ,E(M<n|.  
for(int i=0;i for(int j=data.length-1;j>i;j--){ wGz_IL.D  
if(data[j] SortUtil.swap(data,j,j-1); w@N)Pu  
} F0'o!A#|(  
} sGMnm  
} gcM(K.n  
} kvN6K6  
|[bQJ<v6  
} =:RNpi,  
>vfLlYx  
选择排序: )/v`k>E  
b!;WF  
package org.rut.util.algorithm.support; 4=ha$3h$  
Z!?T&:  
import org.rut.util.algorithm.SortUtil; j~ qm5}  
Mb%[Qp60  
/** w^$$'5=  
* @author treeroot dfeN_0` -  
* @since 2006-2-2 B<!wh  
* @version 1.0 1N8YD .3  
*/ BGT`) WP  
public class SelectionSort implements SortUtil.Sort { SkXx: @  
i;+<5_   
/* i\L7z)u  
* (non-Javadoc) ^\PNjj*C i  
* `? f sU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TsRbIq[  
*/ w4&-9[@Y  
public void sort(int[] data) { YH[HJ#:7r  
int temp; wlX K2D  
for (int i = 0; i < data.length; i++) { ` \-m qe  
int lowIndex = i; ~qW"v^<  
for (int j = data.length - 1; j > i; j--) { C Yk"  
if (data[j] < data[lowIndex]) { ?rwHkPJ{*  
lowIndex = j; H!g9~a  
} 4kLTKm:G  
} Uv3Fe%>  
SortUtil.swap(data,i,lowIndex); ~!dO2\X+  
} 8g 2'[ci$q  
} E+aE5wmr  
Luh*+l-nO  
} y=WCR*N  
p["20 ?^  
Shell排序: 7!, p,|K  
$5yH8JU  
package org.rut.util.algorithm.support; D|5Fo'O^AV  
r%oXO]X  
import org.rut.util.algorithm.SortUtil; M#]URS2h<O  
[%7oq;^J  
/** ) ]]PhGX~  
* @author treeroot ~M J3-<I  
* @since 2006-2-2 x@"`KiEUs  
* @version 1.0 7y>{Y$n  
*/ Yh;A  
public class ShellSort implements SortUtil.Sort{ .*w3ryQ  
Zv1/J}+  
/* (non-Javadoc) E@ !~q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =^3B&qQNq  
*/ m[*y9A1  
public void sort(int[] data) { 2k""/xMF'  
for(int i=data.length/2;i>2;i/=2){ cX-) ]D  
for(int j=0;j insertSort(data,j,i); /SYzo4(  
} [;i3o?\_I  
} ,G(bwE9~  
insertSort(data,0,1); u*H V  
} c"@,|wCUi  
N%+C5e<  
/** [kg*BaG:  
* @param data [ U?a %$G>  
* @param j lF1ieg"i M  
* @param i ?9AtFT  
*/ ig,v6lqhM  
private void insertSort(int[] data, int start, int inc) { $t$YdleIH  
int temp; bG9$&,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `BZX\LPHm  
} 8:(e~? f6  
} 2JRX ;s~  
} mMV -IL  
Q |J$ R  
} O0#9D'{  
~ f>km|Q{u  
快速排序: FiJU *  
(&Z`P  
package org.rut.util.algorithm.support; })@LvYK  
MDKiwT@#  
import org.rut.util.algorithm.SortUtil; #~88[i-6  
,;wc$-Z!8  
/** f)K1j{TZ  
* @author treeroot 8a4&}^|  
* @since 2006-2-2 rY&Y58./  
* @version 1.0 % 2lcc"'  
*/ 5%Q[X  
public class QuickSort implements SortUtil.Sort{ rN^P//  
7Cj6Kw5k  
/* (non-Javadoc) Tn8GLn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q!zsGf {  
*/ 9gokTFoN  
public void sort(int[] data) { -{XXU)Z  
quickSort(data,0,data.length-1); ' fm}&0  
} .FXn=4l'vV  
private void quickSort(int[] data,int i,int j){ DN;An0 {MK  
int pivotIndex=(i+j)/2; ?rgk  
file://swap ^aG=vXK`b  
SortUtil.swap(data,pivotIndex,j); uEKa  FRm  
Tb6c]?'U  
int k=partition(data,i-1,j,data[j]); Fps.Fhm  
SortUtil.swap(data,k,j); GT"gB$Mh  
if((k-i)>1) quickSort(data,i,k-1); 7 V+rQ  
if((j-k)>1) quickSort(data,k+1,j); ?]L:j  
\;s mH;m  
} j;']L}R  
/** oUwu:&<Orm  
* @param data 0Bpix|mq  
* @param i 6+[7UH~pm^  
* @param j f}>S"fFI  
* @return hd}"%9p  
*/ OjiQBsgnj  
private int partition(int[] data, int l, int r,int pivot) { \!4sd2Yi  
do{ %v(\;&@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (7g1eEK%  
SortUtil.swap(data,l,r); c);(+b  
} aBLE:v  
while(l SortUtil.swap(data,l,r); ( nH3  
return l; U0:tE>3`  
} 2x7%6'  
B3^4,'  
} 3;J)&(j0  
{~ngI<  
改进后的快速排序: A;A>Q`JJF  
to  
package org.rut.util.algorithm.support; 'j+J?Y^  
A"@C }f  
import org.rut.util.algorithm.SortUtil; ,4wZ/r> d  
Dab1^H!KT  
/** =K)au$BE|  
* @author treeroot GUyc1{6  
* @since 2006-2-2 EI29;  
* @version 1.0 $iA`_H`W  
*/ v&EHp{8Qd  
public class ImprovedQuickSort implements SortUtil.Sort { *?`:=  
G*|2qX"o  
private static int MAX_STACK_SIZE=4096; ? N|B,F  
private static int THRESHOLD=10; i }5 #n  
/* (non-Javadoc) f}'E|:Z 7k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n2+eC9I  
*/ \5%T'S@5  
public void sort(int[] data) { 0r+%5}|-K  
int[] stack=new int[MAX_STACK_SIZE]; l%^'K%'b  
c!BiGw,;  
int top=-1; W1s4[rL!Ht  
int pivot; m"!!)  
int pivotIndex,l,r; v?\bvg\E  
@Ooh}V#J  
stack[++top]=0; &zF1&J58z  
stack[++top]=data.length-1; 7 C5m#e3  
~pqp`  
while(top>0){ PQ2u R  
int j=stack[top--]; *HwTq[y  
int i=stack[top--]; =B(zW .Gf  
l#,WMu&  
pivotIndex=(i+j)/2; v |XEC[F  
pivot=data[pivotIndex]; #isBE}sT{  
* SG0-_S  
SortUtil.swap(data,pivotIndex,j); 10JxfDceD  
+x!V;H(  
file://partition u=I>DEe@ c  
l=i-1; ]~z2s;J{/  
r=j; Z50]g  
do{ b "4W` A  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SLc6 ]?  
SortUtil.swap(data,l,r); 'W~O ?  
} }XiS:  
while(l SortUtil.swap(data,l,r); J}coWjw`q  
SortUtil.swap(data,l,j); ]OoqU-q  
Aov=qLWJ  
if((l-i)>THRESHOLD){ u8*Uia*vwH  
stack[++top]=i; AG#5_0]P~  
stack[++top]=l-1; =S-'*F  
} 6M"]p  
if((j-l)>THRESHOLD){ 6|05-x|  
stack[++top]=l+1; $H/3t?6h`  
stack[++top]=j; "~4ULl< i'  
} &Q^M[X  
?R0sY ?u  
} HzM^Zn57%  
file://new InsertSort().sort(data); e jwFQ'wTx  
insertSort(data); 67Ai.3dR  
} m?_S&/+*  
/** o_<o8!]l"  
* @param data #Vanw!  
*/ v.+-)RLQg  
private void insertSort(int[] data) { 74%,v|  
int temp; aF$HF;-y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z8Fbx+~"  
} S5'BXE,  
} #`/KF_a3\>  
} 5isejR{r  
 7[55  
} Z-b^{uP  
K ^1bR(a  
归并排序: _EOQ*K#=Ct  
9q;\;-  
package org.rut.util.algorithm.support; #zXkg[J6d  
vcAs!ls+  
import org.rut.util.algorithm.SortUtil; k@AOE0m  
:?{ **&=  
/** VuFH >8n  
* @author treeroot Fk>/  
* @since 2006-2-2 K.] *:fd  
* @version 1.0 O~B iqm  
*/ 8@qYzSx[  
public class MergeSort implements SortUtil.Sort{ 8J%^gy>m]  
;t@zH+*}  
/* (non-Javadoc) . #;ZM[v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :a}hd^;[%8  
*/ HW{osav9  
public void sort(int[] data) { LN?f w  
int[] temp=new int[data.length]; )k3zOKZ;  
mergeSort(data,temp,0,data.length-1); 5 %q26&  
} w1aa5-aF  
cp2e,%o  
private void mergeSort(int[] data,int[] temp,int l,int r){ H.j(hc'  
int mid=(l+r)/2; 6d,jR[JP  
if(l==r) return ; bxO8q57  
mergeSort(data,temp,l,mid); 2<y E3:VX  
mergeSort(data,temp,mid+1,r); C]-Z+9Vvv  
for(int i=l;i<=r;i++){ vI#\ Qe  
temp=data; #OH-LWZh  
} D2~e@J(K  
int i1=l; S(Xab_DT)H  
int i2=mid+1; K3TMTY<p  
for(int cur=l;cur<=r;cur++){ M=e]v9  
if(i1==mid+1) w:& m_z#M  
data[cur]=temp[i2++]; |qJQWmJO&U  
else if(i2>r) X #-U  
data[cur]=temp[i1++]; Ym-uElWo  
else if(temp[i1] data[cur]=temp[i1++]; <r,l  
else 4W~pAruwr  
data[cur]=temp[i2++]; 9rtcI[&?0  
} $ W(m  
} gec<5Ewg  
zMKW@  
} Q,Hw@w<1  
{Os$Uui37\  
改进后的归并排序: h{yqNl  
goeWZO  
package org.rut.util.algorithm.support; t&wtw  
X&t)S?eCos  
import org.rut.util.algorithm.SortUtil; 2Q)"~3  
rFSLTbTf  
/** &2MW.,e7s  
* @author treeroot (J][(=s;a  
* @since 2006-2-2 wnP#.[,V  
* @version 1.0 <Jo_f&&{  
*/ <n>Kc}c  
public class ImprovedMergeSort implements SortUtil.Sort { FlRbGg^  
q/?#+d  
private static final int THRESHOLD = 10; W sQo+Ua  
0eQyzn*98  
/* rcPP-+XW  
* (non-Javadoc) W{At3Bfy  
* [(w _!|S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^/2n[orl5  
*/ P6zy<w  
public void sort(int[] data) { WL7R.!P  
int[] temp=new int[data.length]; 6?Rm>+2>v  
mergeSort(data,temp,0,data.length-1); 'u{m37ZJ  
} t*< .^+Vd  
Lcf =)GL  
private void mergeSort(int[] data, int[] temp, int l, int r) { I7nt<l!  
int i, j, k; $&='&q  
int mid = (l + r) / 2; S>aN#  
if (l == r) ioIUIp+B~u  
return; Z'>Xn^  
if ((mid - l) >= THRESHOLD) WsTbqR)W%  
mergeSort(data, temp, l, mid); ?7'uo$  
else d90B15]gv  
insertSort(data, l, mid - l + 1); M&~3fRb 4  
if ((r - mid) > THRESHOLD) =E8lpN'  
mergeSort(data, temp, mid + 1, r); g9H~\w  
else vdYd~>w  
insertSort(data, mid + 1, r - mid); {%'(IJ|5z  
Mje6Q  
for (i = l; i <= mid; i++) { d3+pS\&IX?  
temp = data; xpKD 'O=T  
} !%_Z>a  
for (j = 1; j <= r - mid; j++) { xXE/pIXw  
temp[r - j + 1] = data[j + mid]; PtCwr)B,  
} -wy$ ?Ha  
int a = temp[l]; k+{ -iPm{  
int b = temp[r]; >o>r@;  
for (i = l, j = r, k = l; k <= r; k++) { 4WG~7eIgy  
if (a < b) { G?{BVWtl}  
data[k] = temp[i++]; l&(,$RmYp  
a = temp; 07DpvhDQ  
} else { |rka/_  
data[k] = temp[j--]; >lU[ lf+/  
b = temp[j]; 4iBp!k7  
} KY<>S/  
} B@Ez,u5  
} +#}I^N  
:se o0w]  
/** cXFNX<  
* @param data QDRSQ[\  
* @param l p\wE})mu  
* @param i ``)ys^V  
*/ j8$*$|  
private void insertSort(int[] data, int start, int len) { E9;cd$}K  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); p[VBeO^%  
} 6n]fr9f  
} r ioNP(  
} .dt7b4.kd  
} _$s9o$8$  
L"&j(|{  
堆排序: XL>c TM  
]vMr@JM-G  
package org.rut.util.algorithm.support; M%7{g"J*  
9Ruj_U  
import org.rut.util.algorithm.SortUtil; ;"hED:z6%  
+u#;k!B/>  
/** ykH?;Xu  
* @author treeroot 8C#R  
* @since 2006-2-2 jwgXq(  
* @version 1.0 yjaX\Wb[z[  
*/ 4P( Y34j  
public class HeapSort implements SortUtil.Sort{ H-~V:OCB~  
zdrCr0Rx,  
/* (non-Javadoc) ,o& &d.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^&MMtWR  
*/  $J>GCY  
public void sort(int[] data) { dkt'~  
MaxHeap h=new MaxHeap(); Mf Dna>,Y  
h.init(data); w,cfSF;=tC  
for(int i=0;i h.remove(); .8S6;xnkC  
System.arraycopy(h.queue,1,data,0,data.length); NOLw119K  
} 47ra`*  
"jH=O(37  
private static class MaxHeap{ "G-} wt+P  
\/g.`Pe  
void init(int[] data){ o_p#sdt"  
this.queue=new int[data.length+1]; S H2|xn  
for(int i=0;i queue[++size]=data; r t@Jw]az  
fixUp(size); U8KB @E  
} ATp7:Q  
} l69&-Nyg  
ml<X92Y  
private int size=0; ,4zwd@&O  
3`S|I_$(T"  
private int[] queue; ?F1NZA[%t  
oMawIND a  
public int get() { 2F[smUL  
return queue[1]; 1Y:lFGoe  
}  h%0/j  
3JVENn9  
public void remove() { T&c0j(  
SortUtil.swap(queue,1,size--); /L\ ]t  
fixDown(1); #;sUAR?]  
} (lq7 ct  
file://fixdown _fx0-S*$  
private void fixDown(int k) { zZ &L#  
int j; D1o<:jOj  
while ((j = k << 1) <= size) { k #y4pF_  
if (j < size %26amp;%26amp; queue[j] j++; YhYcqE8  
if (queue[k]>queue[j]) file://不用交换 0OO$(R*  
break; 3o&PVU? Q  
SortUtil.swap(queue,j,k); j/`- x  
k = j; e>vV8a\  
} +e?mKLw14  
} eR P mN  
private void fixUp(int k) { p%toD{$  
while (k > 1) { 8d|omqe~P  
int j = k >> 1; *{8<4CVv  
if (queue[j]>queue[k]) bCr) 3,  
break; _xT=AF9~o  
SortUtil.swap(queue,j,k); S*-n%D0q5  
k = j; k~Qb"6n2  
} 7\m.xWX e  
} mX3~rK>@~  
vp@%wxl!:  
} @RGVcfCG)  
Y?W"@awE"\  
} PPSf8-MLW  
9v>BP`Mg  
SortUtil: g^ZsV:D  
eYZ{mo7  
package org.rut.util.algorithm; 86igP  
~CiVLS H=  
import org.rut.util.algorithm.support.BubbleSort; }`#OA]NZ  
import org.rut.util.algorithm.support.HeapSort; dR~4*59Bg  
import org.rut.util.algorithm.support.ImprovedMergeSort; qplz !=  
import org.rut.util.algorithm.support.ImprovedQuickSort; N=FU>qbz  
import org.rut.util.algorithm.support.InsertSort; p?(w !O  
import org.rut.util.algorithm.support.MergeSort; 4lhoA  
import org.rut.util.algorithm.support.QuickSort; M\O6~UFq!  
import org.rut.util.algorithm.support.SelectionSort; Tap=K|b ]  
import org.rut.util.algorithm.support.ShellSort; SFCKD/8  
to{/@^ D  
/** eQ _dO]Q  
* @author treeroot sf )ojq6s  
* @since 2006-2-2 eAKK uML  
* @version 1.0 R|aA6} /I  
*/ n!=%MgF'*p  
public class SortUtil { PhF.\W b  
public final static int INSERT = 1; i(P/=B  
public final static int BUBBLE = 2; 1cPm $=B  
public final static int SELECTION = 3; jY>|>]4X  
public final static int SHELL = 4; ?&$??r^i  
public final static int QUICK = 5; V?AHj<  
public final static int IMPROVED_QUICK = 6; >^}nk04  
public final static int MERGE = 7; !R*%F  
public final static int IMPROVED_MERGE = 8; i(R&Q;{E^  
public final static int HEAP = 9; q] g'rO'  
vJ5`:4n"  
public static void sort(int[] data) { +p6cG\Gp  
sort(data, IMPROVED_QUICK); ;AyE(|U+  
} W/_=S+CvK  
private static String[] name={ lg` Qi&  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >;V ? s]  
}; #U45H.Rz  
@V{s'V   
private static Sort[] impl=new Sort[]{ %zj;~W;qPH  
new InsertSort(), H.`>t  
new BubbleSort(), ]-h$CJSY  
new SelectionSort(), fFP>$  
new ShellSort(), T \%{zz_(  
new QuickSort(), s`"o-w\$>  
new ImprovedQuickSort(), U:6 J~  
new MergeSort(), [U+6Tj,  
new ImprovedMergeSort(), fy|ycWW>8  
new HeapSort() ^Q!qJav  
}; 3`sM/BoA  
F02S(WWo;  
public static String toString(int algorithm){ b]S4\BBT  
return name[algorithm-1]; ?^]29p_  
} &atT7m  
hnWo.5;$  
public static void sort(int[] data, int algorithm) { Ar&]/X,WG  
impl[algorithm-1].sort(data); mD }&X7  
} 7^$PauAv  
N<c98  
public static interface Sort { ;#c|ZnX  
public void sort(int[] data); oFt]q =EU  
} |jB]5ciT  
5Pmmt&#/Z  
public static void swap(int[] data, int i, int j) { `L<f15][  
int temp = data; v&g(6~b_>  
data = data[j]; VsS. \1  
data[j] = temp; :NB|r  
} v%Rc wVt|  
} 9^l[d<  
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