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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。 8 kw`=wSH>  
插入排序: rS>JzbWa  
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package org.rut.util.algorithm.support; =N`"%T@=  
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import org.rut.util.algorithm.SortUtil; 3~\mP\/4v  
/** \iAkF`OC  
* @author treeroot rLNo7i  
* @since 2006-2-2 @<e+E"6  
* @version 1.0 ] 5lp.#EB  
*/ k+2~=#  
public class InsertSort implements SortUtil.Sort{ mvI[=e*  
w4 <FC$  
/* (non-Javadoc) oBr/CW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vBUx )l  
*/ RF 4u\ \  
public void sort(int[] data) { "#2z 'J  
int temp; S*6P=O*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1Tf"<D p  
} pGz-5afL  
} sB ]~=vUP  
} kC"<4U  
Uu{I4ls6B  
} zCT Wi  
imAsE;:  
冒泡排序: Z VuHO7'  
[K;J#0V+&L  
package org.rut.util.algorithm.support; <Brq7:n|  
GFOd9=[  
import org.rut.util.algorithm.SortUtil; m]BxGwT=m  
A^2VH$j]+  
/** "W;Gv I  
* @author treeroot C)`k{(-{  
* @since 2006-2-2 I0=YIcH5  
* @version 1.0 7wsn8_n9  
*/ zR(}X8fP  
public class BubbleSort implements SortUtil.Sort{ yHl1:cf(y  
_6&x$ *O  
/* (non-Javadoc) y]aV7 `]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q-gN0"z^6$  
*/ bR6.Xdt.n  
public void sort(int[] data) { ps"DL4*  
int temp; N;7Xt9l  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y~vI@$<~(  
if(data[j] SortUtil.swap(data,j,j-1); 8[U1{s:J  
} 3>%rm%ffE  
} wQ qI@  
} {,tEe'H7  
} n5A0E2!  
0'`>20Y  
} ) f9f_^;  
Eym<DPu$n  
选择排序: hm>JBc:n-  
`uy)][j-  
package org.rut.util.algorithm.support; ,qV8(`y_  
f8kPbpV,  
import org.rut.util.algorithm.SortUtil; .{x-A{l  
^AK<]r<?L?  
/** 0&2(1  
* @author treeroot \];0S4SBy  
* @since 2006-2-2 N"/jn_>+j  
* @version 1.0 $Zp\^cIE+  
*/ z9pv|  
public class SelectionSort implements SortUtil.Sort { Lt0JUUa0  
u HqPb8  
/* ~~k_A|&  
* (non-Javadoc) rvuskXdo  
* MZ o\1tU-i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z=B*s!G  
*/ Mfe/(tlI  
public void sort(int[] data) { Ehu^_HZ  
int temp; nIJ2*QJ  
for (int i = 0; i < data.length; i++) { m8;; O  
int lowIndex = i; 6lOT5C eJ"  
for (int j = data.length - 1; j > i; j--) { `P<}MeJ\l  
if (data[j] < data[lowIndex]) { !`L%wS  
lowIndex = j; 0Lmq?D  
} .)o<'u@Ri  
} n#Xi Co_\  
SortUtil.swap(data,i,lowIndex); "hi?/B#d  
} g-"@%ps  
} x zu)``?  
4Tgy2[D?q  
} 2{Nv&ZX?  
Y%y=  
Shell排序: z&[Rw<{Psb  
o<bZ.t  
package org.rut.util.algorithm.support; Y3+DTR0|'  
iTF`sjL  
import org.rut.util.algorithm.SortUtil; &2[OH}4  
}#5V t  
/** .dX ^3  
* @author treeroot hAtf)  
* @since 2006-2-2 b?eIFI&w^l  
* @version 1.0 \,)('tUE  
*/ L,c@Z@  
public class ShellSort implements SortUtil.Sort{ r18eu B%  
reJw&t}Q  
/* (non-Javadoc) F)_jW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rpH ,c[D  
*/ _SdO}AiG  
public void sort(int[] data) { ]:jP*0bLx  
for(int i=data.length/2;i>2;i/=2){ fTd=}zY  
for(int j=0;j insertSort(data,j,i); +U{8Mj  
} ;"46H'>!  
} RhR{EO  
insertSort(data,0,1);  PNY"Lqj  
} 5'wWj}0!%  
@ -CZa^g  
/** |N, KA|Gdq  
* @param data o0nd]"q?  
* @param j wm~35cF(  
* @param i TG 9 a1q  
*/ 4\ R2\  
private void insertSort(int[] data, int start, int inc) { -l)vl<}  
int temp; [Ak L6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); V .+ mK|)  
} 4H'\nsM  
} 4FUY1p  
} }-QFMPXhG  
I^S gWC  
} DCr&%)Ll  
jez=q  
快速排序: LG3D3{H(.  
j=b?WNK  
package org.rut.util.algorithm.support; L!G]i;=:  
MJ"ug8 N  
import org.rut.util.algorithm.SortUtil; {2"8^;  
z6 T3vw  
/** >tc#Ofgzd  
* @author treeroot UW%zR5q  
* @since 2006-2-2 1;8=,&  
* @version 1.0 tN P>6F/  
*/ +l'l*<  
public class QuickSort implements SortUtil.Sort{ r ,I';vm<`  
*UBukn  
/* (non-Javadoc) RlW0U-%u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !YX$4_I  
*/ d[K71  
public void sort(int[] data) { &h^E_]P  
quickSort(data,0,data.length-1); v$~1{}iI5  
} ZNWo:N8;  
private void quickSort(int[] data,int i,int j){ iQs^2z#Bd  
int pivotIndex=(i+j)/2; &w15 GO;4  
file://swap w]<V~X  
SortUtil.swap(data,pivotIndex,j); V$wW?+V  
2OT RP4U  
int k=partition(data,i-1,j,data[j]); *UL++/f  
SortUtil.swap(data,k,j); k*XI/k5Vc  
if((k-i)>1) quickSort(data,i,k-1); b,C2(?hg  
if((j-k)>1) quickSort(data,k+1,j); O_=2{k~s0  
K9-;-{qb  
} /`6Y-8e2  
/** u NmbR8Mx  
* @param data @ ;T|`Y=7  
* @param i b0X<)1O  
* @param j b;Nm$`2  
* @return _A]8l52pt  
*/ 7Yv1et |  
private int partition(int[] data, int l, int r,int pivot) { rgq~lZ.U4K  
do{ v=m!$~  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .+ezcG4q  
SortUtil.swap(data,l,r); 9mA6nmp  
} HrOq>CSR  
while(l SortUtil.swap(data,l,r); i28WgDG)5  
return l; `G/%U~  
} aMv?D(Meb  
2fqg,_  
} {L6@d1u  
b0VEMu81k  
改进后的快速排序: Q[PVkZ  
D;?cf+6$  
package org.rut.util.algorithm.support; 0FN;^hP5|  
|:7 ^  
import org.rut.util.algorithm.SortUtil; {"v~1W)  
FZFYwU\~.L  
/** +"mS<  
* @author treeroot l<3X:)  
* @since 2006-2-2 y~ 2C2'7  
* @version 1.0 %_P[ C}4  
*/ DsJ ikg(J  
public class ImprovedQuickSort implements SortUtil.Sort { 5r2A^<)  
T'^ Do/  
private static int MAX_STACK_SIZE=4096; ) |t;nK,  
private static int THRESHOLD=10; ]u5B]ZQnA  
/* (non-Javadoc) 1`sLbPW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gWk?g^KJL  
*/ 0Y>5&  
public void sort(int[] data) { pseN!7+or  
int[] stack=new int[MAX_STACK_SIZE]; bm>N~DC  
{UeS_O>(  
int top=-1; 7];AB;0"  
int pivot; 8n&Gn%DvX  
int pivotIndex,l,r; ^uiQZ%;  
P^3`znq{  
stack[++top]=0; $Wy(Wtrx|  
stack[++top]=data.length-1; F o k%  
1  b&<De  
while(top>0){ yf4I<v$y  
int j=stack[top--]; k3PFCl~e  
int i=stack[top--]; +x!Hc  
%[cZ,F=  
pivotIndex=(i+j)/2; C(%b!Q,2  
pivot=data[pivotIndex]; H^3f!\MC;o  
AT6o~u!WU  
SortUtil.swap(data,pivotIndex,j); PEr &|H2  
r5,V-5b  
file://partition Tv[h2_+E  
l=i-1; a Fh9B\n  
r=j; y:HH@aa)  
do{ zi^?9n),  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !-veL1r  
SortUtil.swap(data,l,r);  Y+d+  
} OA7YWk<K  
while(l SortUtil.swap(data,l,r); *SK`&V  
SortUtil.swap(data,l,j); 5FJ(x:k?z  
eG_@WLxwD  
if((l-i)>THRESHOLD){ jd.{J{o  
stack[++top]=i; PQd*)6K:A  
stack[++top]=l-1; wPE\?en  
} ROhhd.  
if((j-l)>THRESHOLD){ H8x66}  
stack[++top]=l+1; T? g%I  
stack[++top]=j; H:#sf][&,L  
} !kxJ&VmeF  
XN^l*Q?3n  
} \Ota~A  
file://new InsertSort().sort(data); /2f  
insertSort(data); RVN;j4uMg  
} fsjCu!  
/** y9Q #%a8V  
* @param data g:fkM{"{  
*/ !AXt6z cZ  
private void insertSort(int[] data) { b!<\#[ A4  
int temp; drQI@sPp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '" 4;;(  
} [C#H _y(  
} 9u;/l#?@T  
} aizJ&7(>  
$L4h'(s  
} *Y':raP  
gF>t+"+ x  
归并排序: im3BQIPR  
Pi hpo  
package org.rut.util.algorithm.support; J#DN2y <  
)Drif\FF)  
import org.rut.util.algorithm.SortUtil; H?_wsh4J  
#|"M  
/** (zX75QSKV  
* @author treeroot t-i\gq^  
* @since 2006-2-2 gX|We}H  
* @version 1.0 N mA6L+  
*/ Ya &\b 6  
public class MergeSort implements SortUtil.Sort{ ffQm"s:P  
yBRYEqS+  
/* (non-Javadoc) h0&Oy52  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ._q}lWT  
*/ O)!S[5YI  
public void sort(int[] data) { 5c\dm  
int[] temp=new int[data.length]; `]=0oDG:1!  
mergeSort(data,temp,0,data.length-1); 'Rb tcFb   
} QuIZpP=  
hb<cynY  
private void mergeSort(int[] data,int[] temp,int l,int r){ OWc~=Cr  
int mid=(l+r)/2; I}+9@d  
if(l==r) return ; x }@P  
mergeSort(data,temp,l,mid); 3wMnTT"At  
mergeSort(data,temp,mid+1,r); LP'wL6#  
for(int i=l;i<=r;i++){ `^HK-t4q  
temp=data; ]1 jhy2j  
} \4KV9wm  
int i1=l; aH_0EBRc  
int i2=mid+1; +i~kqiy.  
for(int cur=l;cur<=r;cur++){ 8shx7"  
if(i1==mid+1) B|"-Ed  
data[cur]=temp[i2++]; {kghZur  
else if(i2>r) Vb)NWXmyu  
data[cur]=temp[i1++]; aL&nD1f=!-  
else if(temp[i1] data[cur]=temp[i1++];  20]p<  
else ?IG[W+M8  
data[cur]=temp[i2++]; s o7.$]aV  
} t,u;"%go  
} Kk).KgR  
"QvTn=  
} N F,<^ u  
CiV^bYi  
改进后的归并排序: @R Jr ~y0  
r=/$}l4  
package org.rut.util.algorithm.support; ^'n;W<\p)  
Q*hXFayx  
import org.rut.util.algorithm.SortUtil; "Hk7s+%  
SZUo RWx  
/** / E!N:g<  
* @author treeroot 7h.fT`  
* @since 2006-2-2 J@OK"%12  
* @version 1.0 q8!]x-5$6j  
*/ YkbuyUui  
public class ImprovedMergeSort implements SortUtil.Sort { *c>B-Fo/D  
#;= sJ[m4  
private static final int THRESHOLD = 10; Tol"D2cyf  
~RH)iI  
/* cua( w  
* (non-Javadoc) ,n2"N5{jw  
* "A> _U<Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ B'AXv 6  
*/ S0tkqA4  
public void sort(int[] data) { 0g;)je2_2?  
int[] temp=new int[data.length]; Z]w?RL  
mergeSort(data,temp,0,data.length-1); qLPuKIF  
} 1ASoH,D/  
91-[[<  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4hxa|f  
int i, j, k; iuA_ Jr  
int mid = (l + r) / 2; v o4U%  
if (l == r) K $WMrp  
return; +4Fw13ADE  
if ((mid - l) >= THRESHOLD) Q/q>mN"#1  
mergeSort(data, temp, l, mid); +i#s |kKs\  
else wD:2sri  
insertSort(data, l, mid - l + 1); :cf#Tpq"  
if ((r - mid) > THRESHOLD) r@}8TE*|P  
mergeSort(data, temp, mid + 1, r); !L@<?0x LW  
else gLRDd~H  
insertSort(data, mid + 1, r - mid); Ylyk/  
;XQ27,K&  
for (i = l; i <= mid; i++) { kZ PL$ \/A  
temp = data; CvR-lKV<  
} %@:6&  
for (j = 1; j <= r - mid; j++) { =\ k:]  
temp[r - j + 1] = data[j + mid]; [$F*R@,&  
} ~N2=44e  
int a = temp[l]; t .}];IJP  
int b = temp[r]; ~ToU._  
for (i = l, j = r, k = l; k <= r; k++) { do*aE  
if (a < b) { D&@Iuo  
data[k] = temp[i++]; ?bpV dm!  
a = temp; -:kIIK   
} else { J"Fp),  
data[k] = temp[j--]; M[+#*f.T}  
b = temp[j]; Yep~C %/}  
} jSSEfy>^  
} 'F#dv[N  
} V/:2xT  
Rt:^'Qi$!  
/** ];jp)P2o  
* @param data O"/Sv'|H#  
* @param l 2[;~@n1P  
* @param i ,p#r; O<O  
*/ o@7U4#E  
private void insertSort(int[] data, int start, int len) { c%bzrYQvA;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !{{gL=_@  
} |fIyq}{7  
} d WY{x47  
} m@u% 3*:  
} mYj)![  
tj*/%G{Y  
堆排序: +KD7Di91<K  
;4(}e{  
package org.rut.util.algorithm.support; x7Gf):,LK  
ktS^^!,l%  
import org.rut.util.algorithm.SortUtil; L|}s Z\2!  
[ [w |  
/** l^$'6q"  
* @author treeroot $:\`E 56\  
* @since 2006-2-2 5KDCmw  
* @version 1.0 )0]U"Nf ho  
*/ UG=]8YY!  
public class HeapSort implements SortUtil.Sort{ |2%|=   
<5,|h3]-#  
/* (non-Javadoc) ]31=8+D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y9>92#aME  
*/ 'n ^,lXWB  
public void sort(int[] data) { 7(oA(l1V  
MaxHeap h=new MaxHeap(); VX82n,'=t  
h.init(data); TVx `&C+  
for(int i=0;i h.remove(); "wuO[c&%/  
System.arraycopy(h.queue,1,data,0,data.length); jd,i=P%  
} %q~q,=H$]  
fm`V2'Rm  
private static class MaxHeap{ A)V*faD  
01n132k  
void init(int[] data){ y4LUC;[n  
this.queue=new int[data.length+1]; ggiy{CdR  
for(int i=0;i queue[++size]=data; <9piKtb|L  
fixUp(size); lSW'qgh  
} IM7<z,*oF  
} z#ki# o  
*z)gSX  
private int size=0; ,[t? $Cy ;  
c{_JPy  
private int[] queue; 6 Bdxdx*zt  
%Zbm%YaW5  
public int get() { /PeT4hW}  
return queue[1]; eU@Mv5&6  
} tpC^68* F  
V=dOeuYd  
public void remove() { g2m* Q%  
SortUtil.swap(queue,1,size--); 0 p ?AL=  
fixDown(1); fK+ 5   
} pjX=:K|  
file://fixdown KYtCN+vsG  
private void fixDown(int k) { -4sKB>b  
int j; <R;wa@a>  
while ((j = k << 1) <= size) { _^NaP  
if (j < size %26amp;%26amp; queue[j] j++; 6% ofS8 [  
if (queue[k]>queue[j]) file://不用交换 $Seh4  
break; @+H0D"  
SortUtil.swap(queue,j,k); l EzN   
k = j; zfv@<'  
} H@Ot77(*  
} fn=A_ i  
private void fixUp(int k) { VOZxLyj^9  
while (k > 1) { w5{l-Z  
int j = k >> 1;  \20} /&  
if (queue[j]>queue[k]) 9\<q =p~  
break; 3 dJ362  
SortUtil.swap(queue,j,k); !cYID \}S,  
k = j; X,_K )f  
} 0bM_EC  
} %" 7UYLX  
-` ViuDX=  
} =g! Pw]  
{yWL|:#K  
} VOM@x%6#c  
 MiIxj%,(  
SortUtil: 2Kz$y JTp  
v N\[2r%S  
package org.rut.util.algorithm; V%PQlc.X  
?o?$HK   
import org.rut.util.algorithm.support.BubbleSort; H"8B4~*7H  
import org.rut.util.algorithm.support.HeapSort; tEvDAI} 5  
import org.rut.util.algorithm.support.ImprovedMergeSort; 9N'fU),I  
import org.rut.util.algorithm.support.ImprovedQuickSort; T+&fUhSy  
import org.rut.util.algorithm.support.InsertSort; t_w\k_ T  
import org.rut.util.algorithm.support.MergeSort; -43>?m/a  
import org.rut.util.algorithm.support.QuickSort; 6>rz=yAM_  
import org.rut.util.algorithm.support.SelectionSort; U364'O8_  
import org.rut.util.algorithm.support.ShellSort; m^!j)\sM5  
ufIvvZ*  
/** BJWlx*U]  
* @author treeroot 9!Q ZuZY  
* @since 2006-2-2 (k #xF"yI  
* @version 1.0 t^"8M6BqC;  
*/ v$Fz^<Na  
public class SortUtil { T`fT[BaY  
public final static int INSERT = 1; #jg-q|nd  
public final static int BUBBLE = 2; ,^8':X"A{!  
public final static int SELECTION = 3; `1(ED= |  
public final static int SHELL = 4; _Ffg"xoC  
public final static int QUICK = 5; " WQ6[;&V  
public final static int IMPROVED_QUICK = 6; ]zaTX?F:  
public final static int MERGE = 7; t-KicLr  
public final static int IMPROVED_MERGE = 8; _$c o Y  
public final static int HEAP = 9; .,xyE--;d  
sV,Yz3E<u$  
public static void sort(int[] data) { x4c|/}\)*  
sort(data, IMPROVED_QUICK); aYT!xdCI  
} ~LpkA`Hn!  
private static String[] name={ \DS*G7.A+&  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" g:)iEw>a  
}; LX7P?j  
|~ fI=1;;x  
private static Sort[] impl=new Sort[]{ qS @3:R  
new InsertSort(), tm.60udbo  
new BubbleSort(), {{Ox%Zm  
new SelectionSort(), 3= sBe HL  
new ShellSort(), k+-?b(z)$  
new QuickSort(), {c9 f v H  
new ImprovedQuickSort(), #J&3Zds  
new MergeSort(), 5tpC$4m  
new ImprovedMergeSort(), AZc= Bbh  
new HeapSort() By8SRWs  
}; ;!S5P(  
U'ctO%  
public static String toString(int algorithm){ 2K};-}eW  
return name[algorithm-1]; 5["3[h  
} 5uQ+'*xN%  
c.Hw K\IU  
public static void sort(int[] data, int algorithm) { D1ZyJs#  
impl[algorithm-1].sort(data); }i"[5:  
} $Bz};@  
XH~(=^/_  
public static interface Sort {  4bA^Gq  
public void sort(int[] data); 7:?\1 a  
} FqA4 O U  
AaA!U!B  
public static void swap(int[] data, int i, int j) { {24>&<p  
int temp = data; }W}(k2r  
data = data[j]; l$\2|D  
data[j] = temp; v:4j 3J$z  
} ; >H1A  
} CYy=f-  
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