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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。 BhFyEY(  
插入排序: Ujb7uho  
sUl/9VKl  
package org.rut.util.algorithm.support; '1rHvz`B/"  
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import org.rut.util.algorithm.SortUtil; leY fF  
/** Y9^;TQ+#  
* @author treeroot ]CL t Km  
* @since 2006-2-2 xi3  
* @version 1.0 )Pj8{.t4  
*/ iH&BhbRu_  
public class InsertSort implements SortUtil.Sort{ c ow]qe6K  
a[).'$S}'  
/* (non-Javadoc) Fh[Gq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w&U>w@H^  
*/ $K-od3h4=  
public void sort(int[] data) { `)Z+]5:  
int temp; -`d9dJ dB  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HzuB.B<  
} 6xfG`7Az  
} bi =IIVlH  
} {Kdr-aC  
I{rW+<)QGC  
} i7 *cpNPO  
OsSGVk #Qh  
冒泡排序: ;`p!/9il  
*d%U]Hby,  
package org.rut.util.algorithm.support; *Y!c6eA  
t93iU?Z  
import org.rut.util.algorithm.SortUtil; V( /=0H/ F  
QAI!/bB  
/** YY? }/r  
* @author treeroot BkO)hze  
* @since 2006-2-2 k~P{Rm;F  
* @version 1.0 M?yWFqFt9m  
*/ ~YYg~6}vV  
public class BubbleSort implements SortUtil.Sort{ 0nX.%2p#Je  
gJn_Z7MgJ  
/* (non-Javadoc) h3z=tu['  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @1p ,  
*/ (l~3~n  
public void sort(int[] data) { Wd0$t    
int temp; W;^bc*a_  
for(int i=0;i for(int j=data.length-1;j>i;j--){ o{QU?H5h  
if(data[j] SortUtil.swap(data,j,j-1); "q'9-lk  
} 0'{`"QD\IW  
} NbDfD3 1GK  
} rwRb _eIj  
} .W9/*cZV0  
p]7Gj &a  
} XIrNT:h4  
O8J:Tw}M*  
选择排序: TYs#v/)I  
SdI/  
package org.rut.util.algorithm.support; Ul EP;  
HOb-q|w  
import org.rut.util.algorithm.SortUtil; ,;_D~7L  
JW5SBt>  
/** bhFAt1h  
* @author treeroot B-OuBS,fwC  
* @since 2006-2-2 JKFV7{ %Gl  
* @version 1.0 Z_^v#FJ'l  
*/ ;[_w&"[6a  
public class SelectionSort implements SortUtil.Sort { MKuy?mri~  
M?UlC   
/* ^z[-pTY  
* (non-Javadoc) $=97M.E  
* JMMsOA_]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kt";Jx  
*/ C+WHg-l  
public void sort(int[] data) { WAj26";M(  
int temp; ,]N!I%SI  
for (int i = 0; i < data.length; i++) { [xXml On!  
int lowIndex = i; mX8A XWIa  
for (int j = data.length - 1; j > i; j--) { 6]|NB&  
if (data[j] < data[lowIndex]) { t;DZ^Z"{  
lowIndex = j; C/P,W>8  
} k?.HW?=zy  
} u+]v. Mt  
SortUtil.swap(data,i,lowIndex); NVnKgGlHgd  
} !U"1ZsO)l  
} tPS.r.0#^  
YkcX#>,  
} Sa&~\!0t  
O=1uF  
Shell排序: }lgqRg)F9[  
Zq|oj^  
package org.rut.util.algorithm.support; JlsRP  
b; SFnZa8  
import org.rut.util.algorithm.SortUtil; &)vX7*j  
PL8{|Q  
/** {Izg1 N  
* @author treeroot E<3hy  
* @since 2006-2-2 =+{.I,g}g@  
* @version 1.0 fB5Bh;K  
*/ 2#'[\*2|N  
public class ShellSort implements SortUtil.Sort{ #R|M(Z">q  
x5m .MQ J  
/* (non-Javadoc) ?lb1K'(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) US)wr  
*/ -A9 !Y{Z  
public void sort(int[] data) { i^uC4S~  
for(int i=data.length/2;i>2;i/=2){ n?pCMS|  
for(int j=0;j insertSort(data,j,i); mW 5L;>  
} Ul[>LKFY  
} n/s!S &  
insertSort(data,0,1); 3WJ> T1we  
} eEn_aX  
R*TCoEKO  
/** n<CJx+U  
* @param data -p ) l63  
* @param j KLq u[{y.'  
* @param i ;ijJ%/  
*/ ;FZ\PxN  
private void insertSort(int[] data, int start, int inc) { Sct-,K%i  
int temp; ;k7` `  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qPE(Lt1  
} KN~E9oGs  
} %8$JL=c  
} X@9_ukdpu  
GQ|kcY=  
} w}NgFrL  
P>pkLP} Vo  
快速排序: l$,l3  
=JO|m5z8>  
package org.rut.util.algorithm.support; M=o,Sav5*  
um#;S;  
import org.rut.util.algorithm.SortUtil; V.Xz n  
UUb!2sO  
/** _gC<%6#V`r  
* @author treeroot o;];ng  
* @since 2006-2-2 |,dMF2ADc  
* @version 1.0 -ZQ3^'f:0J  
*/ .2xypL8(  
public class QuickSort implements SortUtil.Sort{ l`I]eTo)^  
GetUCb%1  
/* (non-Javadoc) Rdt8jY6F/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *$# r%  
*/ xA!o"VZPq7  
public void sort(int[] data) { lBG* P>;  
quickSort(data,0,data.length-1); 6-KC[J^Xo  
} Fa+PN9M`?.  
private void quickSort(int[] data,int i,int j){ 0BaL!^>  
int pivotIndex=(i+j)/2;  _&(ij(H  
file://swap sWavxh8A  
SortUtil.swap(data,pivotIndex,j); y\0^c5}  
[PX'Jer  
int k=partition(data,i-1,j,data[j]); 6{7O  
SortUtil.swap(data,k,j); RTY$oUqlZ  
if((k-i)>1) quickSort(data,i,k-1); m]"YR_  
if((j-k)>1) quickSort(data,k+1,j); TdQ^^{SRp  
&-b=gnT   
} KG3*~G  
/** .k*2T<p$rC  
* @param data :>3&"T.  
* @param i Tl%4L % bE  
* @param j #[KwR\b{:+  
* @return :T{or-  
*/ *(>$4$9n  
private int partition(int[] data, int l, int r,int pivot) { 8OFrW.>[  
do{ bR8)s{p6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); so8-e  
SortUtil.swap(data,l,r); GzB%vsv9 5  
} teB {GR  
while(l SortUtil.swap(data,l,r); X^.r@tT  
return l; [ThzLk#m  
} F_r eBPx  
h{JVq72R  
} F 5JgR-P  
AQV3ZVP  
改进后的快速排序: FN,uD:a  
'P Yl%2  
package org.rut.util.algorithm.support; 5:PZ=jPR  
#-f^;=7  
import org.rut.util.algorithm.SortUtil; xeH# )QJt  
mY AFruN  
/** uB^]5sqfk  
* @author treeroot 3PEs$m9e  
* @since 2006-2-2 Z0:BXtW  
* @version 1.0 /<2_K4(-{4  
*/ e=R} 4`  
public class ImprovedQuickSort implements SortUtil.Sort { g Q9ff,  
v6n(<0:  
private static int MAX_STACK_SIZE=4096; lz*2wGI9  
private static int THRESHOLD=10; 8xv\Zj+  
/* (non-Javadoc) ?yU#'`q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >mV""?r]  
*/ oaK~:'  
public void sort(int[] data) { C,]Ec2  
int[] stack=new int[MAX_STACK_SIZE]; <>:kAT,sP  
}*t~&l0  
int top=-1; BY d3rI  
int pivot; +vnaEy  
int pivotIndex,l,r; o MAK[$k;  
h`Mf;'P  
stack[++top]=0; [~o3S$C&7  
stack[++top]=data.length-1; hJ@nW5CI  
'8JaD6W9S  
while(top>0){ y*D 8XI$  
int j=stack[top--]; d]^i1  
int i=stack[top--]; tc',c},h~,  
cjW]Nw  
pivotIndex=(i+j)/2; LQjqwsuN{  
pivot=data[pivotIndex]; 8dH|s#.4um  
;:4puv+]  
SortUtil.swap(data,pivotIndex,j); 88K*d8m  
@RP|?Xc{?  
file://partition !jbjrzv9  
l=i-1; 1}pR')YL[  
r=j; D4|_?O3 |m  
do{ 9wC; m:  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;'p'8lts  
SortUtil.swap(data,l,r); Sf8d|R@O  
} q|l|gY1g)  
while(l SortUtil.swap(data,l,r); {V8Pn2mlo  
SortUtil.swap(data,l,j); UPYM~c+}  
OOCeZ3yF(  
if((l-i)>THRESHOLD){ nM`)`!/  
stack[++top]=i; #<o#kJL  
stack[++top]=l-1; dq(x@&J  
} ~-+Zu<  
if((j-l)>THRESHOLD){ x _K%  
stack[++top]=l+1; D6u>[Z[T  
stack[++top]=j; I,eyL$x  
} : [y(<TLw  
sfa'\6=O  
} +mQSlEo  
file://new InsertSort().sort(data); lI 1lP 1  
insertSort(data); (4LLTf0  
} B/OO$=>(  
/** 7,TWCVap  
* @param data jGn^<T\  
*/ j,XKu5w)Oi  
private void insertSort(int[] data) { }H=OVbQor  
int temp; PS6`o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^v-'=1ub?  
} 9f,:j  
} ''uI+>Y  
} WFP\;(YV  
OX4D'  
} F]YKYF'1I  
EcIQ20Z_-  
归并排序: ozLJ#eOE9  
F/sBr7I  
package org.rut.util.algorithm.support; - (1\ `g07  
fh#_Mj+y  
import org.rut.util.algorithm.SortUtil; tHbPd.^  
Tm\[q  
/** $0T"YC%  
* @author treeroot |`wsKr'  
* @since 2006-2-2 u9w&q^0dqG  
* @version 1.0 C4]%pi  
*/ *K'ej4"u  
public class MergeSort implements SortUtil.Sort{ 1i:g /H  
m7vxzC*  
/* (non-Javadoc) ,<b|@1\k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]0 RXo3  
*/ 4rG 7\  
public void sort(int[] data) { nM-SDVFM  
int[] temp=new int[data.length]; ?4e6w  
mergeSort(data,temp,0,data.length-1); v&2@<I>  
} ;bZ*6-\!-  
PMs_K"-K  
private void mergeSort(int[] data,int[] temp,int l,int r){ Z&jb,eh2  
int mid=(l+r)/2; 9ox|.68q  
if(l==r) return ; ]fo^43rn{  
mergeSort(data,temp,l,mid); h6y4Ii  
mergeSort(data,temp,mid+1,r); AYIz;BmWy  
for(int i=l;i<=r;i++){ qO{ ZZ*  
temp=data; $'YKB8C  
} ++DQS9b{  
int i1=l; Qk.Q9@3W  
int i2=mid+1; 86fK= G:>  
for(int cur=l;cur<=r;cur++){ 8`2<g0V2  
if(i1==mid+1) heZy 66  
data[cur]=temp[i2++]; )kKmgtj  
else if(i2>r) .*-w UBr  
data[cur]=temp[i1++]; -{U>} Y)  
else if(temp[i1] data[cur]=temp[i1++]; e ]o'i;I  
else t-*|Hfp*^  
data[cur]=temp[i2++]; 5b1uD>,;y  
} E\~ KVn  
} E? eWv)//  
L3GC[$S  
} hr4ye`c j  
b>= Wq  
改进后的归并排序: {XD/8m(hN|  
6w"( y~c1  
package org.rut.util.algorithm.support; DwmU fZp  
2k}-25xxL  
import org.rut.util.algorithm.SortUtil; ,ah*!Zm.kk  
I+"?,Ej$K  
/** qJ+52U|z  
* @author treeroot "WbVCT'i  
* @since 2006-2-2 Kka8cG  
* @version 1.0 =v4r M0m,  
*/  6Z&u  
public class ImprovedMergeSort implements SortUtil.Sort { %7v@n+Q  
 /MqXwUbO  
private static final int THRESHOLD = 10; UM( l%  
>*= =wlOB  
/* G_M:0YI@  
* (non-Javadoc) xshAr J&A  
* !ASoXQRz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yn4)Zhkk  
*/ w=D%D8 r2  
public void sort(int[] data) { ~llMrl7  
int[] temp=new int[data.length]; O}MZ-/z=o~  
mergeSort(data,temp,0,data.length-1); w}j6 .r  
} NSS4v tA  
z$c&=Q  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7a:*Y"f,~  
int i, j, k; 9p2>`L  
int mid = (l + r) / 2; Any Zi'  
if (l == r) ', sQ/#S  
return; F?b'L JS  
if ((mid - l) >= THRESHOLD) uNe}"hs  
mergeSort(data, temp, l, mid); 7|QGY7Tf  
else =R&)hlm  
insertSort(data, l, mid - l + 1); $ZI~8rI~  
if ((r - mid) > THRESHOLD) 3}B5hht "D  
mergeSort(data, temp, mid + 1, r); )W8L91-  
else 'Aj(i/CM  
insertSort(data, mid + 1, r - mid); l:Dn3Q  
EO#gUv  
for (i = l; i <= mid; i++) { Dac ^*k=D  
temp = data; j:3EpD@GS  
} [d4,gEx`Q\  
for (j = 1; j <= r - mid; j++) { uxa=KM1H  
temp[r - j + 1] = data[j + mid]; ':l"mkd+`  
} (R_CUH  
int a = temp[l]; -3.UE^W2  
int b = temp[r]; g/IH|Z=A  
for (i = l, j = r, k = l; k <= r; k++) { !2}rtDE  
if (a < b) { ;>9OgO  
data[k] = temp[i++]; <S]KaDu^  
a = temp; },DyU  
} else { 2)wAFO6u  
data[k] = temp[j--]; j%pCuC&"  
b = temp[j]; "r8EC  
} dh&W;zs  
} 7p)N_cJD  
} j]pohxn$5  
3->,So0Y  
/** EdEoXY-2  
* @param data PzjaCp'  
* @param l {Q)dU-\  
* @param i |*:tyP%m^  
*/ )ZH c$+fU  
private void insertSort(int[] data, int start, int len) { 5U%MoH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); UqN{JG:#.  
} %a5t15 9  
} nO~b=qO  
} >;)2NrJV  
} Bc@30KiQ ^  
tp Xa*6  
堆排序: 7_DG 5nT  
*=Doe2(!C  
package org.rut.util.algorithm.support; [|4}~UV  
UP\C"\  
import org.rut.util.algorithm.SortUtil; 5MxH)~VQoM  
j'+ELKQ  
/** %JQ~!3  
* @author treeroot ,eDD:#)$}  
* @since 2006-2-2 !\^jt%e&  
* @version 1.0 XYjcJ  
*/ eJ)1K  
public class HeapSort implements SortUtil.Sort{ Z==!C=SBv  
M#xQW`-`  
/* (non-Javadoc) L\YKdUL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8lwFAiC8  
*/ 4qt+uNe!  
public void sort(int[] data) { 4U?<vby  
MaxHeap h=new MaxHeap(); # :#M{1I  
h.init(data); 1 tPVP  
for(int i=0;i h.remove(); bDDqaO ,8  
System.arraycopy(h.queue,1,data,0,data.length); zG#wu   
} j$Nf%V 6Y  
r| f-_D  
private static class MaxHeap{ o@9+mM"B)  
:\b|dvI<  
void init(int[] data){ .n`( X#,*l  
this.queue=new int[data.length+1]; /Pvk),ca  
for(int i=0;i queue[++size]=data; w9f _b3  
fixUp(size); GRT] aw  
} Z\Z,,g+WL  
} gO='A(Y  
r<c #nD~K  
private int size=0; ZjD)? 4  
o@W_ai_  
private int[] queue; R`#W wx>b  
nA_%2F'W}  
public int get() { ]78!!G[`  
return queue[1]; KVR~jF%  
} Z/<#n\>t0>  
+j{Y,t{4  
public void remove() {  l{$[}<  
SortUtil.swap(queue,1,size--); #y 1Bx,  
fixDown(1); "uKFOV?j&  
} :et#0!  
file://fixdown PcC/_+2  
private void fixDown(int k) { $6h*l T<  
int j; 6e&$l-  
while ((j = k << 1) <= size) { *fnvZw?  
if (j < size %26amp;%26amp; queue[j] j++; m%QSapV  
if (queue[k]>queue[j]) file://不用交换 Gb2L }  
break; 0[xpEiDx  
SortUtil.swap(queue,j,k); =']3(6*  
k = j; 8{0k0 &x  
} 0[T,O,y  
} _=EKXE)&}  
private void fixUp(int k) { PFrfd_s{>\  
while (k > 1) { c_.-b=zm  
int j = k >> 1; R)5n 8  
if (queue[j]>queue[k]) jlqv2V7=/  
break; $q_R?Eay  
SortUtil.swap(queue,j,k); 6N~q`;p0  
k = j; +=BAslk  
} ' cBBt  
} DinPxtT?a  
,"\@fwy{  
} z6*<V5<7  
2`?!+")  
} //f  
By)u-)g9  
SortUtil: YXW%]Uy+  
"=1;0uy]  
package org.rut.util.algorithm; p H@]Y+W  
p{D4"Qn+P9  
import org.rut.util.algorithm.support.BubbleSort; -0C@hM,wm  
import org.rut.util.algorithm.support.HeapSort; HKDID[d0  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5jB* fIz  
import org.rut.util.algorithm.support.ImprovedQuickSort; BlA[T%  
import org.rut.util.algorithm.support.InsertSort; `aC){&AP(  
import org.rut.util.algorithm.support.MergeSort; /Ncm^b4  
import org.rut.util.algorithm.support.QuickSort; =u[k1s?  
import org.rut.util.algorithm.support.SelectionSort; Pe;Y1Qq>>  
import org.rut.util.algorithm.support.ShellSort; _hu")os  
u #w29Pm  
/** *Hz^K0:8(  
* @author treeroot Ho;X4lo[j  
* @since 2006-2-2 **3 z;58i  
* @version 1.0 s$D ^>0  
*/ |yEa5rd?W  
public class SortUtil { ^(HUGl_  
public final static int INSERT = 1; (xHf4[[u  
public final static int BUBBLE = 2; "ZM4F?x  
public final static int SELECTION = 3; !K f#@0E..  
public final static int SHELL = 4; anMF-x4/*q  
public final static int QUICK = 5; G 0%6ch^%  
public final static int IMPROVED_QUICK = 6; VX LT^iX  
public final static int MERGE = 7; aI^/X {d  
public final static int IMPROVED_MERGE = 8; fC,:{}  
public final static int HEAP = 9; C CBfKp  
]vWKR."4  
public static void sort(int[] data) { E;JsBH  
sort(data, IMPROVED_QUICK); Sz- J y:j  
} tg]x0#@s  
private static String[] name={ 8>,jpAN}r  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  ;s`sn$@  
}; S}p4iE"n  
a,2'+Tlo  
private static Sort[] impl=new Sort[]{ <:SZAAoIV  
new InsertSort(), X/iT)R]b  
new BubbleSort(), e/0<[s*#Q  
new SelectionSort(), Zjbc3 M5  
new ShellSort(), TT =b79k  
new QuickSort(), t2,A@2DU 2  
new ImprovedQuickSort(), 1 $/%m_t  
new MergeSort(), 0"CG7Vg,zh  
new ImprovedMergeSort(), L#E] BY  
new HeapSort() H,Z;=N_  
}; o.0ci+z@  
yE}}c{hSn  
public static String toString(int algorithm){ At-U2a#J{  
return name[algorithm-1]; $5Xh,DOg  
} gw, UQbnu  
J ]nohICe  
public static void sort(int[] data, int algorithm) { h }B% /U  
impl[algorithm-1].sort(data); :x tXQza"-  
} 0NS<?p~_S  
bbrXgQ`s+w  
public static interface Sort { $GlWf  
public void sort(int[] data); =EHUR'  
} "?V0$-DR  
0aG ni|  
public static void swap(int[] data, int i, int j) { 28 ?\  
int temp = data; j'A_'g'^  
data = data[j]; ^s|6vd;PD=  
data[j] = temp; V5UF3'3;}  
} L*YynF  
} nih0t^m'  
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