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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。 Aipm=C8  
插入排序: OzrIiahz/  
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package org.rut.util.algorithm.support; (XmmbAbVom  
b/ \EN)  
import org.rut.util.algorithm.SortUtil; ;#9?3O s  
/** QJ(%rvn3  
* @author treeroot =LV-n  
* @since 2006-2-2 YCltS!k  
* @version 1.0 d[,Rgdd@I  
*/ G>0d^bx;E  
public class InsertSort implements SortUtil.Sort{ \|QB;7u  
hN!;Tny  
/* (non-Javadoc) L +Uq4S^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T*%GeY [  
*/ UH%H9; ,$]  
public void sort(int[] data) { SN ?Z7  
int temp; -_5Dk'R#`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZM-P  
} :2S?|7U4  
} T%6JVFD  
} "X2'k@s`  
]goJ- &  
} a<\n$E#q  
dX)a D $m  
冒泡排序: |rk.t g9  
p@f #fs  
package org.rut.util.algorithm.support; }RadbJ{q=  
RVwS<g)~1  
import org.rut.util.algorithm.SortUtil; K=0xR*ll5  
4sQm"XgE  
/** :FS5BT$=  
* @author treeroot b7\>=  
* @since 2006-2-2 fb`x1Q  
* @version 1.0 ^`id/  
*/ uBt ]4d*  
public class BubbleSort implements SortUtil.Sort{ 3c6e$/  
:23S%B~X  
/* (non-Javadoc) TBPu&+3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f|w;u!U(  
*/ AP,ZMpw  
public void sort(int[] data) { E!1\9wzM{  
int temp; }M%3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0>SA90Q  
if(data[j] SortUtil.swap(data,j,j-1); L5 `k3ap|  
} 6#*_d,xQT  
} M KW~rrR  
} WFahb3kx  
} iQ:eR]7X  
$ eI cCLF  
} K)>F03=uE  
K<5yjG8&  
选择排序: pu/5#[MC)^  
;.sYE/ZVi  
package org.rut.util.algorithm.support; ^_@[1'^  
'a+^= c  
import org.rut.util.algorithm.SortUtil; {Dl@/fz  
z;oia!9z  
/** TxF^zx\  
* @author treeroot "i#g [x  
* @since 2006-2-2 4y3c=L No  
* @version 1.0 ed',\+.uB  
*/ PZqp;!:xz  
public class SelectionSort implements SortUtil.Sort { ~$K{E[^<  
DL4`j>2Ov  
/* BuRsz6n  
* (non-Javadoc) rbdrs  
* @H#Fzoo.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,}'8. f  
*/ K2x2Y=  
public void sort(int[] data) { QK6_dIvDz  
int temp; Izu____  
for (int i = 0; i < data.length; i++) { 4w ,&#L  
int lowIndex = i; m85ZcyW1T  
for (int j = data.length - 1; j > i; j--) { O-V] I0  
if (data[j] < data[lowIndex]) { myX&Z F_9  
lowIndex = j; Q >[>{N&\  
} KO8{eT9d  
} [XI:Yf  
SortUtil.swap(data,i,lowIndex); P!f0&W  
} aQL0Sj:,  
} :$K=LV#Iru  
lq_UCCnv5  
} td%J.&K_*'  
Pd&KAu|<`  
Shell排序: )-5eIy  
)-[$m%  
package org.rut.util.algorithm.support; 9yTdbpY  
JW0\y+o~  
import org.rut.util.algorithm.SortUtil; yW'{Z]09  
[Lje?M* r  
/** G?Gf,{#K  
* @author treeroot +8Q @R)3  
* @since 2006-2-2 Nm&'&L%Ch  
* @version 1.0 *cWHl@4  
*/ B/a`5&G]  
public class ShellSort implements SortUtil.Sort{ Xykoq"dbb  
ej_u):G*  
/* (non-Javadoc) #Ko I8U"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;5X~"#%U_  
*/ AFL'Ox]0  
public void sort(int[] data) { ]>[TF'pIAx  
for(int i=data.length/2;i>2;i/=2){ l2 n`fZL  
for(int j=0;j insertSort(data,j,i); vS~tr sI  
} t^MTR6y+8  
} AcnY6:3Y|  
insertSort(data,0,1); } G{"Mp4  
} Rq+7&%dy  
BV@q@C  
/** w=_^n]`R  
* @param data 5TpvJ1G  
* @param j `+< ^Svou  
* @param i >2>/ q?  
*/ {,Vvm*L/  
private void insertSort(int[] data, int start, int inc) {  q%d'pF  
int temp; ?m~1b_@A{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9>- 6Y  
} u `xQC /  
} g$e|y#Ic$  
} }U'9 d#N  
9a=:e=q3#  
} =gSc{ i|  
 D~"a"  
快速排序: xF3FY0U[  
~tfd9,t  
package org.rut.util.algorithm.support; H%l-@::+$  
d:>^]5cE&  
import org.rut.util.algorithm.SortUtil; (=u!E+N  
bnkZWw'9  
/** QlB9m2XB  
* @author treeroot )=gU~UV  
* @since 2006-2-2 nU{Qi;0  
* @version 1.0 ?0dmw?i  
*/ 4"eFR'g  
public class QuickSort implements SortUtil.Sort{ /PSXuVtu5  
1qAE)8ie  
/* (non-Javadoc) <ivG(a*=]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LyvR].p=5*  
*/ 36co 'a4,  
public void sort(int[] data) { Xa>'DO2  
quickSort(data,0,data.length-1); ygja{W.  
}  d<xi/  
private void quickSort(int[] data,int i,int j){ ;k@]"&t  
int pivotIndex=(i+j)/2; HP*{1Q@5  
file://swap UZFs ]z!,k  
SortUtil.swap(data,pivotIndex,j); AEj%8jh  
O95gdxc  
int k=partition(data,i-1,j,data[j]); aKW-(5<JW  
SortUtil.swap(data,k,j); :D3:`P>,c  
if((k-i)>1) quickSort(data,i,k-1); k*2khh-  
if((j-k)>1) quickSort(data,k+1,j); /8]K}yvR  
-32P}58R  
} XgVhb<l_  
/** ehB '@_y  
* @param data cX1?4e8  
* @param i .'66]QW  
* @param j y,rdyt  
* @return Tz6I7S-w  
*/ |9 5K  
private int partition(int[] data, int l, int r,int pivot) { Tw$tE:  
do{ R73@!5N%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RgH 6l2  
SortUtil.swap(data,l,r); v9@_ DlV\  
} Lbrn8,G\  
while(l SortUtil.swap(data,l,r); V!. Y M)B  
return l; onmkg}&_  
} I&i6-xp  
PtQ[({d3R  
} *wx%jbJo  
Sx~mc_ekY  
改进后的快速排序: hunlKIg  
W.{+0xx  
package org.rut.util.algorithm.support; H~#$AD+H  
JT<JS6vw#  
import org.rut.util.algorithm.SortUtil; 'tkQz  
MaPhG<?  
/** %$b}o7U"s  
* @author treeroot UzSDXhzObf  
* @since 2006-2-2 URj)]wp/  
* @version 1.0 O251. hXK  
*/ Sru0j/|H\  
public class ImprovedQuickSort implements SortUtil.Sort { *^{j!U37s  
,if~%'9j  
private static int MAX_STACK_SIZE=4096; fO5L[U^`  
private static int THRESHOLD=10; (  -q0!]E  
/* (non-Javadoc) uIO?4\s&G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .EWjeVq  
*/ ]QY-L O(  
public void sort(int[] data) { 6||%T$_;}  
int[] stack=new int[MAX_STACK_SIZE]; z7?SuJ  
R= Ig !s9  
int top=-1; 80%"2kG  
int pivot; Cz5U  
int pivotIndex,l,r; KRd'!bG=1  
gI RZkT`  
stack[++top]=0; 4@F8-V3q4  
stack[++top]=data.length-1; ]==7P;_-  
K ~-V([tWg  
while(top>0){ )AieO-4*  
int j=stack[top--]; $aT '~|?  
int i=stack[top--]; Z?[ R;V1j  
u&={hJ&7  
pivotIndex=(i+j)/2; mPPB"uQ  
pivot=data[pivotIndex]; PmsZ=FY  
l_04b];  
SortUtil.swap(data,pivotIndex,j); ;mD!8<~z.  
KU/QEeqbrp  
file://partition \cX9!lHl  
l=i-1; %sZ3Gpi  
r=j; t6e6v=.Pg  
do{ Y/m-EL  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); rcLF:gd] E  
SortUtil.swap(data,l,r); +DefV,Ny  
} leSBR,C  
while(l SortUtil.swap(data,l,r); *h?}~!AjY  
SortUtil.swap(data,l,j); cRag0.[  
ODpAMt"  
if((l-i)>THRESHOLD){ {='wGx  
stack[++top]=i; wS$ 'gKA6  
stack[++top]=l-1; {Eo Z }I  
} V$$9Rh  
if((j-l)>THRESHOLD){ 79 _8Oh  
stack[++top]=l+1; AYoTCi%7E  
stack[++top]=j; DN*M-o9  
} iV@\v0k  
9.~ _swkv  
} ]CU)#X<J  
file://new InsertSort().sort(data);  0RCp  
insertSort(data); Pu!C,7vUQ  
} "tmu23xQ  
/** 1p/_U?H:|  
* @param data eln$,zK/b  
*/ Y nTx)uW  
private void insertSort(int[] data) { cZ`%Gt6g  
int temp; ZX+0{E8a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0#Q]>V@rO4  
} P()&?C  
} P?8$VAkj  
} D}ZPgt#   
)`|`PB  
} / a}N6KUi  
Zl!  
归并排序: w9x5IRWk  
E 6Uj8]P`  
package org.rut.util.algorithm.support; z+0#H39&  
s"tH?m )6  
import org.rut.util.algorithm.SortUtil; S?'L%%Vo  
|a\,([aU  
/** HmsXV_B8[Y  
* @author treeroot E.*wNah"U  
* @since 2006-2-2 V^ ;l g[:  
* @version 1.0 W8]?dL}|  
*/ Qe9}%k6@E  
public class MergeSort implements SortUtil.Sort{ 7<8'7<X  
[ f<g?w  
/* (non-Javadoc) 4w 7vgB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KeyHxU=?  
*/ w 17{2']  
public void sort(int[] data) { "yU<X\n i  
int[] temp=new int[data.length]; X2np.9hie  
mergeSort(data,temp,0,data.length-1); /bC@^Y&}  
} VqOTrB1w/  
=zp{ ^mC  
private void mergeSort(int[] data,int[] temp,int l,int r){ `J{{E,y @  
int mid=(l+r)/2; h,fahbH -  
if(l==r) return ; }U%E-:  
mergeSort(data,temp,l,mid); 3][   
mergeSort(data,temp,mid+1,r); us:v/WTQ  
for(int i=l;i<=r;i++){ 2of+KI:  
temp=data; ^}z:FI   
} /Vv)00  
int i1=l; 0(uba3z  
int i2=mid+1; @'J~(#}  
for(int cur=l;cur<=r;cur++){ Z#;\Rb.x7  
if(i1==mid+1) u VUrg;>  
data[cur]=temp[i2++]; 5!6iAS+I  
else if(i2>r) xTZJ5iZ17  
data[cur]=temp[i1++]; 3)^ 2X  
else if(temp[i1] data[cur]=temp[i1++]; 0J5$ Yw1'F  
else M|.ykA<D  
data[cur]=temp[i2++]; %~Ymb&ugg  
} `+Mva  
} ]jmZ5h#[  
,mD$h?g  
} uE#i3( J  
Bq,Pk5b  
改进后的归并排序: z5f3T D6,  
; ?,'jI*1  
package org.rut.util.algorithm.support; m&_!*3BAG  
|Y+[_D}  
import org.rut.util.algorithm.SortUtil; X5Y. o&  
*unJd"<*&@  
/** _z"\3hZ  
* @author treeroot 3/su1M[  
* @since 2006-2-2 (b.Mtd  
* @version 1.0 y<yU5  
*/ AX{yfL  
public class ImprovedMergeSort implements SortUtil.Sort { [s-!t E3-  
bU4\Yu   
private static final int THRESHOLD = 10; 0}Q d  
fAT M?  
/* E3_ 5~>  
* (non-Javadoc) ~~,#<g[  
* }OgZZ8-_M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ab_EH}j1\q  
*/ vb\R~%@T,  
public void sort(int[] data) {  A1jA$  
int[] temp=new int[data.length]; V#DNcF~v]f  
mergeSort(data,temp,0,data.length-1); ev yA#~o  
} 4Rl~7|  
Op iVQr:  
private void mergeSort(int[] data, int[] temp, int l, int r) { lYrW"(2  
int i, j, k;  ixF  
int mid = (l + r) / 2; 0n)UvJ  
if (l == r) lR]SGdY  
return; 7<F{a"5P  
if ((mid - l) >= THRESHOLD) f[$Z<:D-ve  
mergeSort(data, temp, l, mid); %bTXu1  
else wH qbTA  
insertSort(data, l, mid - l + 1); tlmfDQD  
if ((r - mid) > THRESHOLD) 4?7OP t6  
mergeSort(data, temp, mid + 1, r); O~F8lQ  
else 1FRpcE  
insertSort(data, mid + 1, r - mid);  Y}Nd2  
?uE@C3 e  
for (i = l; i <= mid; i++) { 1ZfhDtK(  
temp = data; -s6;IoG/  
} 1,sD'iNb  
for (j = 1; j <= r - mid; j++) { @0%^\Qf2  
temp[r - j + 1] = data[j + mid]; TUR2|J@n  
} 2{-'`l fM%  
int a = temp[l]; eJZt&|7N  
int b = temp[r]; )G$0:-J-  
for (i = l, j = r, k = l; k <= r; k++) { MSS0Sx<f  
if (a < b) { !r_2b! dy  
data[k] = temp[i++]; t. kOR<  
a = temp; myWa>Mvb  
} else { (w, Gv-S  
data[k] = temp[j--]; >Co5_sCe  
b = temp[j]; ;e ^`r;]  
} iD!]I$  
} N1z:9=(I  
} Bf6\KI<V2  
'uF"O"*  
/** C5'#0}6i  
* @param data ;jT@eBJ  
* @param l C C`Y r  
* @param i k*= #XbX  
*/ ;kF+V*  
private void insertSort(int[] data, int start, int len) { ~YrO>H` B  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ' sTMUPg`  
} J]4Uh_>)  
} B3&`/{u  
} 8|\?imOp\[  
} t9m08K:Y  
t>(}LV.  
堆排序: NT [~AK9M  
=xsTVT;sj  
package org.rut.util.algorithm.support; 8u#2M8.5E  
[e`6gGO  
import org.rut.util.algorithm.SortUtil; THDyb9_g  
dht*1i3v  
/** g%f6D%d)A  
* @author treeroot ioS(;2F  
* @since 2006-2-2 RE75TqYW  
* @version 1.0 [>U =P`  
*/ NYp46;  
public class HeapSort implements SortUtil.Sort{ zvnR'\A_  
.uu[MzMIu  
/* (non-Javadoc) XSz)$9~hk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~i/K7qZ  
*/ .Zv uhOn^  
public void sort(int[] data) { 0:4w@"Q  
MaxHeap h=new MaxHeap(); qEV>$>}  
h.init(data); VTvNn  
for(int i=0;i h.remove(); a/H|/CB 3  
System.arraycopy(h.queue,1,data,0,data.length); 5j$ a3nH  
} )*n2 ,n  
o@tc   
private static class MaxHeap{ <;nhb  
[&a=vE  
void init(int[] data){ YhNO{4D  
this.queue=new int[data.length+1]; /%w3(e  
for(int i=0;i queue[++size]=data; $[DSe~  
fixUp(size); l^%W/b>?b  
} K';x2ffj  
} *b+ ~@o  
eww/tGa  
private int size=0; "Z*u2_ H  
/p_#8}Uh  
private int[] queue; E*X-f"  
^26}j uQ  
public int get() { t bEJyA  
return queue[1]; H|*Ual  
} JP*VR=0k?  
dw]jF=u  
public void remove() { ._IBO;*@  
SortUtil.swap(queue,1,size--); /32x|Ow# 1  
fixDown(1); Z. G<'  
} |KLCO'x  
file://fixdown 2h5L#\H"  
private void fixDown(int k) { Doc_rQYku  
int j; e.jbFSnA  
while ((j = k << 1) <= size) { ?."YP[;  
if (j < size %26amp;%26amp; queue[j] j++; mJL=H  
if (queue[k]>queue[j]) file://不用交换 |QB[f*y5  
break; !U8n=A#,-  
SortUtil.swap(queue,j,k); >crFIkOJ  
k = j; 24Uvi:B?~  
} 5|0}   
} s'Wu \r'  
private void fixUp(int k) { 7S]<?>*  
while (k > 1) { 1'"TO5  
int j = k >> 1; _[t:Vme}v  
if (queue[j]>queue[k]) 7@uhw">mX  
break; ?,0 a#lG  
SortUtil.swap(queue,j,k); *$yU|,  
k = j; 's_[ #a;Vp  
} @UCr`>  
} ;fGh]i  
] g]^^  
} {f:%+h  
WYXh1_nyk  
} '| rhm  
ztb?4f q6)  
SortUtil: RJk42;]  
nBJ'ak   
package org.rut.util.algorithm; Uon^z?0A  
hWD%_"yhd  
import org.rut.util.algorithm.support.BubbleSort; -b$m<\0*  
import org.rut.util.algorithm.support.HeapSort; 4(D/~OG-6  
import org.rut.util.algorithm.support.ImprovedMergeSort; rK} =<R  
import org.rut.util.algorithm.support.ImprovedQuickSort; " ';K$&,[  
import org.rut.util.algorithm.support.InsertSort; *~SanL\  
import org.rut.util.algorithm.support.MergeSort; Q.Xs%{B  
import org.rut.util.algorithm.support.QuickSort; LZH~VkK@m}  
import org.rut.util.algorithm.support.SelectionSort; 'K*. ?M  
import org.rut.util.algorithm.support.ShellSort; ]L{diD 2G  
)]M,OMYq-  
/** _-5|"oJ  
* @author treeroot ]CxD m  
* @since 2006-2-2 zSo(+D &[  
* @version 1.0 U~1)a(Yu;  
*/ ) o`ep{<t  
public class SortUtil { 7w51UmO  
public final static int INSERT = 1; P}8cSX9  
public final static int BUBBLE = 2; R;3n L[{U  
public final static int SELECTION = 3; ^bG91"0A  
public final static int SHELL = 4; >7,?X_:A-1  
public final static int QUICK = 5; 5-?*Boi>i  
public final static int IMPROVED_QUICK = 6; My<.^~  
public final static int MERGE = 7; 2D)B%nM[  
public final static int IMPROVED_MERGE = 8; 'B yB1NL  
public final static int HEAP = 9; #bCQEhCy  
1=z6m7@'-  
public static void sort(int[] data) { 4U>g0  
sort(data, IMPROVED_QUICK); ^bk:g}o  
} l#bE_PD;  
private static String[] name={ BHNEP |=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" MmQ"z_v  
}; 7 F> a&r  
K;j0cxl  
private static Sort[] impl=new Sort[]{ ,4--3 MU  
new InsertSort(), GW,RE\Q:  
new BubbleSort(), <\`qRz0/  
new SelectionSort(), "el}9OitC  
new ShellSort(), F_-}GN%  
new QuickSort(), Xb2.t^ ]f  
new ImprovedQuickSort(), 7.FD16  
new MergeSort(), _?v&\j  
new ImprovedMergeSort(), 7&&3@96<*#  
new HeapSort() tE WolO[\  
}; 7A"v:e  
z9Nial`p  
public static String toString(int algorithm){ <%?!3 n*  
return name[algorithm-1]; G3dA`3  
} 4t,f$zk  
_qa9wK/  
public static void sort(int[] data, int algorithm) { Z;~7L*|  
impl[algorithm-1].sort(data); S\L^ZH?[2  
} :Lu 9w0>f  
#5%ipWPHb  
public static interface Sort { O;+ sAt  
public void sort(int[] data); U%)-_ *`z  
} =*{Ii]D  
~@mNR^W-W  
public static void swap(int[] data, int i, int j) { 1+ 9!W  
int temp = data; ]FEDAGu  
data = data[j]; }'`}| pM$  
data[j] = temp; 3/V0w|ZgD  
} |.;*,bb|3  
} t?wVh0gT  
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