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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。 F ]\4<  
插入排序: |_a E~_  
G*e/Ft.wf8  
package org.rut.util.algorithm.support; +Ij>\;vM"  
.l5y !?  
import org.rut.util.algorithm.SortUtil; Zb`}/%\7  
/** Mw7 ~:O`  
* @author treeroot YMnG-'^Z  
* @since 2006-2-2 aT"q}UTK  
* @version 1.0 ?3Wh. %n  
*/ JP9eNc[  
public class InsertSort implements SortUtil.Sort{ UNq!|  
~f 2H@#  
/* (non-Javadoc) di`Ql._M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lRnst-inlI  
*/ Q4-d2I>0  
public void sort(int[] data) { #b []-L!  
int temp; URmx8=q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Afo(! v  
} YEAiLC+q  
} #\iQ`Q<B  
} yInW?3  
Bm"jf]  
} e{.2*>pH  
e2;19bj&  
冒泡排序: nK1XJp  
3Z NYR'  
package org.rut.util.algorithm.support; 9*RfOdnNe  
.Ff;St  
import org.rut.util.algorithm.SortUtil; tTe\#o`  
-MJ6~4k2  
/** :gVz}/C.@  
* @author treeroot c, \TL ]  
* @since 2006-2-2 %FLz}QW*  
* @version 1.0 %Y:'5\^lC  
*/ `,Q uO  
public class BubbleSort implements SortUtil.Sort{ I,QJ/sI  
c'&3[aa  
/* (non-Javadoc) uu1-` !%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N \[Cuh8Fe  
*/ ~HI|t2C  
public void sort(int[] data) { %#2[3N{  
int temp;  .VuZ=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6cVaO@/(  
if(data[j] SortUtil.swap(data,j,j-1); PDvqA{  
} yAG4W[  
} -o6K_R}R  
} 8V`r*:\  
} K=M5d^K<E  
9 Bz ~3  
} G<9MbMG  
X3".  
选择排序: 9yajtR  
thOQcOf0$  
package org.rut.util.algorithm.support; ]zmY] 5  
[{ K$sd  
import org.rut.util.algorithm.SortUtil; (ScL  C  
;S"^O AM  
/** \;I%>yOIu  
* @author treeroot POfvs]  
* @since 2006-2-2 Cd#[b)d ?^  
* @version 1.0 ?W1( @.  
*/ *J=`"^BO  
public class SelectionSort implements SortUtil.Sort { {tk42}8k  
r^n%PH <  
/* UMpC2)5  
* (non-Javadoc) P-ys$=  
* `n Y!nh6!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zIf/jk  
*/ 1,T8@8#  
public void sort(int[] data) { zK(9k0+s  
int temp; `]#DdJ_|  
for (int i = 0; i < data.length; i++) { 1&ZG6#16q  
int lowIndex = i; :@KWp{ D7  
for (int j = data.length - 1; j > i; j--) { _S{HVc  
if (data[j] < data[lowIndex]) { Pan^@B=Q  
lowIndex = j; F +D2 xN@  
} m!er "0  
} ea3AcT6  
SortUtil.swap(data,i,lowIndex); aDm$^yP  
} .<gA a"  
} j0>S)Q  
I5wf|wB-  
} ba1zu|@w  
\kF}E3~+#  
Shell排序: fCJ:QK!  
e57}.pF^  
package org.rut.util.algorithm.support; t(?m!Z?tb  
-8HIsRh  
import org.rut.util.algorithm.SortUtil; |F-_YR  
QY8I_VF  
/** 67+ K ?!,  
* @author treeroot T-xcd  
* @since 2006-2-2 kn 5q1^  
* @version 1.0 _Xlf}BE  
*/ ,v4Z[ (  
public class ShellSort implements SortUtil.Sort{ 1u:OzyJy  
8iB1a6TlL  
/* (non-Javadoc) sl}bNzT#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /d%&s^M:  
*/ R;.zS^LL  
public void sort(int[] data) { 6k%N\!_TUW  
for(int i=data.length/2;i>2;i/=2){ OthQ)&pq X  
for(int j=0;j insertSort(data,j,i); YC - -&66  
} -\b~R7VQ  
} C8}ujC  
insertSort(data,0,1); ,}2M'DSWa  
} Wo&MHMP  
^2mmgN   
/** Vl5}m  
* @param data ,DqI> vx|  
* @param j B'"C?d<7  
* @param i sw6]Bc  
*/ (=}U2GD*  
private void insertSort(int[] data, int start, int inc) { H2 5Mx>|d  
int temp; - U!:.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (Gf1#,/3~  
} JBtcl# |  
} 5rRYv~+  
} AH{]tE  
P#\L6EO.  
} sn '#]yM  
4.$<o/M  
快速排序: <%#M&9d)E  
Q9tBHz  
package org.rut.util.algorithm.support; PCF!Y(l  
KFCrJ )  
import org.rut.util.algorithm.SortUtil; U=\ZeYK.  
dqwAQ-x  
/** c}kZ x1  
* @author treeroot SL zL/5s  
* @since 2006-2-2 9F845M  
* @version 1.0 OE]z C  
*/ 1q0DOf]!T  
public class QuickSort implements SortUtil.Sort{ |&`NB|  
'e^,#L_!o  
/* (non-Javadoc) qX^#fk7]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R$X1Q/#md  
*/ k"Y9Kc0XoU  
public void sort(int[] data) { 2>p K  
quickSort(data,0,data.length-1); J3KY?,g3O_  
} S;sggeP7,  
private void quickSort(int[] data,int i,int j){ 3?iRf6;n  
int pivotIndex=(i+j)/2; [tGAo/  
file://swap _tTtq/z<  
SortUtil.swap(data,pivotIndex,j); 5+\[x`  
X<dQq`kZ  
int k=partition(data,i-1,j,data[j]); rCR?]1*Z  
SortUtil.swap(data,k,j); ,X25-OFZ  
if((k-i)>1) quickSort(data,i,k-1); `9E:V=  
if((j-k)>1) quickSort(data,k+1,j); fDt#<f 4;  
U??P  
} u&yAMWl  
/** :IlRn`9X`  
* @param data .lAqD-  
* @param i `WQz_}TqB  
* @param j NBEcx>pma  
* @return [y-0w.V=oE  
*/ zs|R#?a=  
private int partition(int[] data, int l, int r,int pivot) { `T7gfb%1-3  
do{ Vp{! Ft8>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); GEj/Z};;[b  
SortUtil.swap(data,l,r); /tR@J8pV  
} mz$)80ly  
while(l SortUtil.swap(data,l,r); d2`m0U  
return l; *@/1]W  
} Sm-gi|A  
\H|tc#::{  
} #$7d1bx  
8*z)aB&f3  
改进后的快速排序: lx _jy>$}r  
n6 D9f~8"  
package org.rut.util.algorithm.support; 95LZG1]Rb  
3Kuu9< 0  
import org.rut.util.algorithm.SortUtil; qn) VKx=  
~R^~?Y%+<  
/** h&@ A'om~  
* @author treeroot g$ bbm}6S  
* @since 2006-2-2 WO$9Svh8  
* @version 1.0 >xrO W`p ]  
*/ 9n4vuBgv  
public class ImprovedQuickSort implements SortUtil.Sort { JrlDTNJj'  
\GhL{Awv&a  
private static int MAX_STACK_SIZE=4096; K8`Jl=}z%&  
private static int THRESHOLD=10; s jl(  
/* (non-Javadoc) 4)MKYhm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wJ#fmQXKJ5  
*/ 7Nx5n<  
public void sort(int[] data) { n7-|\p!xP6  
int[] stack=new int[MAX_STACK_SIZE]; L3}n(K AJj  
~nYp*t C'  
int top=-1; L&h@`NPO a  
int pivot; .axJ'*~W  
int pivotIndex,l,r; yQ$Q{,S9  
*Iy5 V7`KU  
stack[++top]=0; H'2&3v  
stack[++top]=data.length-1; qyi5j0)W  
 l Ozi|  
while(top>0){ fKEZlrw  
int j=stack[top--]; 7G6XK   
int i=stack[top--]; Jv_KZDOdk  
^3~+|A98M  
pivotIndex=(i+j)/2; t~_j+k0K#  
pivot=data[pivotIndex]; abog\0  
~)J]`el,Q  
SortUtil.swap(data,pivotIndex,j); R"@J*\;$T  
RNa59b  
file://partition 6<aZr\Ufg  
l=i-1; i;:gBNmo=  
r=j; f@JMDJ  
do{ KmF" Ccc  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x<&2`=  
SortUtil.swap(data,l,r); ]rwHr;.  
} Z8vMVo  
while(l SortUtil.swap(data,l,r); z= \y)'b  
SortUtil.swap(data,l,j); 8+}yf.`  
]0[Gc \h}  
if((l-i)>THRESHOLD){ VTS7K2lBvX  
stack[++top]=i; qW~Z#Si  
stack[++top]=l-1; 0%x"Va~"z  
} 8bf_W3  
if((j-l)>THRESHOLD){ n8h1S lK08  
stack[++top]=l+1; C8^h`B9z&I  
stack[++top]=j; &Tc:WD  
} l]g /rs  
{@1;kG  
} TRLz>mQ  
file://new InsertSort().sort(data); ]|H`?L  
insertSort(data); [N@t/^gRC  
} , )&ansN  
/** 4lM)ZDg  
* @param data ^|^ywgK  
*/ \,n|V3#G  
private void insertSort(int[] data) { Bqcih$`BVU  
int temp; ;`")3~M3*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p :v'"A}  
} ;+ -@AYl  
} 9\dpJ\  
} _cRCG1CJ  
Xu.Wdl/{Ra  
} _DDknQP  
|_6V+/?"?`  
归并排序: UO1WtQyu,H  
9#;GG3  
package org.rut.util.algorithm.support; !g`^<y!  
l+ ,p=  
import org.rut.util.algorithm.SortUtil; 61aU~w11a  
c*m7'\  
/** $a@T:zfe  
* @author treeroot CI#6 r8u  
* @since 2006-2-2 =00c1v  
* @version 1.0 dCb7sqJ%  
*/ S3?Bl'  
public class MergeSort implements SortUtil.Sort{ /VmtQ{KTt+  
u# TNW.  
/* (non-Javadoc) Sux/='  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ia9=&Hy])  
*/ t6,bA1*5y  
public void sort(int[] data) { +GYO<N7  
int[] temp=new int[data.length]; < NRnE8:  
mergeSort(data,temp,0,data.length-1); !=3Ce3-  
} \PzJ66DL!  
YAdk3y~pL  
private void mergeSort(int[] data,int[] temp,int l,int r){ X7~^D[ X  
int mid=(l+r)/2; ?~:4O}5Ax  
if(l==r) return ; /g]NC?  
mergeSort(data,temp,l,mid); 3|0wD:Dy  
mergeSort(data,temp,mid+1,r); QomihQnc  
for(int i=l;i<=r;i++){ G`e!WvC  
temp=data;  5(\H:g\z  
} 5Ic'6AIz  
int i1=l; Ql1J?9W  
int i2=mid+1; w7%.EA{N  
for(int cur=l;cur<=r;cur++){ ?on EqH>  
if(i1==mid+1) FX  %(<M  
data[cur]=temp[i2++]; b|DiU}  
else if(i2>r) Wt M1nnJp  
data[cur]=temp[i1++]; u9*7Buou^  
else if(temp[i1] data[cur]=temp[i1++]; 5-RA<d#  
else b[2 #t  
data[cur]=temp[i2++]; AX]cM)w  
} ?Q[b1:;Lm  
} ujf]@L?  
Djr/!j  
} pV(qan,  
m ##_U9O  
改进后的归并排序: 3^,p$D<T:,  
A7I{Le  
package org.rut.util.algorithm.support; 0JXXJ:dB  
vNQ|tmn  
import org.rut.util.algorithm.SortUtil; ]Om;bmwt  
6W/uoH=;  
/** ILIv43QKM(  
* @author treeroot 0<)Ep~!  
* @since 2006-2-2 UZ;FrQ(l{  
* @version 1.0 hEA;5-m  
*/ (XNd]G  
public class ImprovedMergeSort implements SortUtil.Sort { 98Y1-Z^ .  
N5 b^  
private static final int THRESHOLD = 10; jSQM3+`b  
"#.L\p{Zy  
/* ?BR Z){)  
* (non-Javadoc) Ov;q]Vn>  
* C'6c,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L>n^Q:M  
*/ X2mZ~RB(p  
public void sort(int[] data) { >-j( [%  
int[] temp=new int[data.length]; 4xF}rm  
mergeSort(data,temp,0,data.length-1); o0_H(j?  
} z .+J\  
-U{!'e8YiN  
private void mergeSort(int[] data, int[] temp, int l, int r) { sitgz)Ki^  
int i, j, k; (@NW2  
int mid = (l + r) / 2; eB9F35[  
if (l == r) Flaqgi/j  
return; : cPV08i  
if ((mid - l) >= THRESHOLD) y/>Nx7C0=2  
mergeSort(data, temp, l, mid); >@EwfM4[e  
else wlDo(]mj=O  
insertSort(data, l, mid - l + 1); kyf(V)APPu  
if ((r - mid) > THRESHOLD) "iJAM`Hi  
mergeSort(data, temp, mid + 1, r); P! P` MX  
else @QDUz>_y  
insertSort(data, mid + 1, r - mid); 24*3m&fA*K  
+I@2,T(eG  
for (i = l; i <= mid; i++) { f\z9?Z(~  
temp = data; 1 J[z ![Tf  
} TA+#{q+a  
for (j = 1; j <= r - mid; j++) { _TyQC1 d  
temp[r - j + 1] = data[j + mid]; ; hU9_e  
} p7L6~IN  
int a = temp[l]; f[q_eY  
int b = temp[r]; rS0#]Gg  
for (i = l, j = r, k = l; k <= r; k++) { r;O?`~2'4  
if (a < b) { <9x|)2P  
data[k] = temp[i++]; X*a7`aL  
a = temp; b/4gs62{k  
} else { lUiO|  
data[k] = temp[j--]; tPDB'S:&3  
b = temp[j]; \}Kad\)  
} z'zC  
} !q8A!P4|'  
} n65fT+;  
Q;@w\_ OR  
/** wKJK!P  
* @param data #+^l3h MK  
* @param l G }M!  
* @param i eTt{wn;6  
*/ }dSFv   
private void insertSort(int[] data, int start, int len) { nZ`=Up p)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); #Z]<E6<=9  
} fVq,?  
} >P6U0  
} AI .2os*  
} kEg~yN  
|\]pTA$2  
堆排序: (; Zl  
"?YpF2pD  
package org.rut.util.algorithm.support; )Y?E$=M +B  
$-)y59w"  
import org.rut.util.algorithm.SortUtil; e co=ia  
%;`3I$  
/** ND5E`Va5R  
* @author treeroot i{PX=  
* @since 2006-2-2 #elaz8 5  
* @version 1.0 bre6SP@  
*/ ^N~Jm&I  
public class HeapSort implements SortUtil.Sort{ 6.4,Qae9E  
W*D*\E  
/* (non-Javadoc) C%'eF`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H{;8i7%  
*/ UOI Z8Po  
public void sort(int[] data) { ? oGmGKq  
MaxHeap h=new MaxHeap(); t aOsC! Bp  
h.init(data); I3?:KVa  
for(int i=0;i h.remove(); 7M9s}b%?  
System.arraycopy(h.queue,1,data,0,data.length); "2@Ys* e  
} $w<~W1\:  
LZu_-I  
private static class MaxHeap{ J15$P8J  
~#[ ZuMO?  
void init(int[] data){ L G9#D  
this.queue=new int[data.length+1]; Q&9& )8-  
for(int i=0;i queue[++size]=data; bRAf!<3  
fixUp(size); *-9b!>5eD  
} U 0S}O(Ptr  
} 9$'Edi=6  
fmq^AnKd  
private int size=0; %K]nX#.B&  
'w7{8^Z2  
private int[] queue; O~&l.>??  
G,i%:my7  
public int get() { 8%#uZG\}  
return queue[1]; >Y/1%Hp9  
} 3'2}F%!Mv  
N:/$N@"Ge  
public void remove() { #$%gs]  
SortUtil.swap(queue,1,size--); Sq==)$G  
fixDown(1); k07) g:_  
} k .l,>s`!  
file://fixdown |wj/lX7y  
private void fixDown(int k) { rQ$A|GJL  
int j; W.,J'  
while ((j = k << 1) <= size) { O"9f^y*  
if (j < size %26amp;%26amp; queue[j] j++; i&FC-{|Z  
if (queue[k]>queue[j]) file://不用交换 9Au+mIN  
break; _>:g&pS/  
SortUtil.swap(queue,j,k); 4%j&]PASa1  
k = j; vR~*r6hX8  
} Sb[rSczS~  
} T}]Ao  
private void fixUp(int k) { zFuUv_t  
while (k > 1) { c\4n7m,y  
int j = k >> 1; Bv@m)$9\+3  
if (queue[j]>queue[k]) JT^E `<nn  
break; @4B2O"z`  
SortUtil.swap(queue,j,k); )3B5"b,  
k = j; |_2ANWHz  
} 3]Lk}0atpL  
} ::T<de7  
Yhw* `"X  
} (Fgt#H(B  
j*:pW;)^  
} fZ g*@RR  
S s`0;D1  
SortUtil: .DvAX(2v  
4l`gAE$  
package org.rut.util.algorithm; NxX1_d  
<7] z'  
import org.rut.util.algorithm.support.BubbleSort; usTCn3u  
import org.rut.util.algorithm.support.HeapSort; !d0@^JbM"  
import org.rut.util.algorithm.support.ImprovedMergeSort; c\b>4 &n  
import org.rut.util.algorithm.support.ImprovedQuickSort; z:G9Uu3H(  
import org.rut.util.algorithm.support.InsertSort; GyPN)!X@.&  
import org.rut.util.algorithm.support.MergeSort; : }IS=A  
import org.rut.util.algorithm.support.QuickSort; TQ2Tt "  
import org.rut.util.algorithm.support.SelectionSort; 3CHte*NL=  
import org.rut.util.algorithm.support.ShellSort; M{4_BQ4$  
Ul'G g  
/** er#=xqUY  
* @author treeroot u ?Xku8 1l  
* @since 2006-2-2 TnaIRJ\B  
* @version 1.0 uU\iji\  
*/ B&$89]gs|  
public class SortUtil { N+V-V-PVk  
public final static int INSERT = 1; fIcv}Y  
public final static int BUBBLE = 2; tj&A@\/  
public final static int SELECTION = 3; l&A`  
public final static int SHELL = 4; I^|bQ3sor  
public final static int QUICK = 5; O9yQ9sl  
public final static int IMPROVED_QUICK = 6; ^,5.vfES  
public final static int MERGE = 7; Vi|jkyC8  
public final static int IMPROVED_MERGE = 8; 4>E2G:  
public final static int HEAP = 9; Mww]l[1'EL  
t}FMBG o[  
public static void sort(int[] data) { T7Ac4LA  
sort(data, IMPROVED_QUICK); /YbL{G )j}  
} ZD{srEa/a  
private static String[] name={ Wd}mC<rv1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }a1UOScO0  
}; 80EY7#r@w  
xVyUUzXs  
private static Sort[] impl=new Sort[]{ %ze1ZWO{  
new InsertSort(), .'1j5Y-l`N  
new BubbleSort(), j5O*H_D  
new SelectionSort(), ;Z_C3/b  
new ShellSort(), -DnK )u\@  
new QuickSort(), h<.[U $,  
new ImprovedQuickSort(), <.B s`P  
new MergeSort(), S8RB0^Q7  
new ImprovedMergeSort(), ]EnaZWyO]  
new HeapSort() 5!zvoX9  
}; dE]"^O#Mc  
G~L?q~b  
public static String toString(int algorithm){ GvOAs-$  
return name[algorithm-1]; ODEXQl}R  
} (O2HB-<rY  
vWH>k+9&X  
public static void sort(int[] data, int algorithm) { jTr 4A-"  
impl[algorithm-1].sort(data); YoJ'=z,e  
} { NJ>[mKg  
|q2lTbJ  
public static interface Sort { H| U/tU-  
public void sort(int[] data); e}[we:  
} &'b}N  
?ljod6  
public static void swap(int[] data, int i, int j) { ] <3?=$  
int temp = data; S\5k' ifh  
data = data[j]; znO00qX  
data[j] = temp; &;U7/?Q  
} i q:Q$z&  
} Te}yQ=+  
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