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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。 mgAjD.  
插入排序: :> 0ywg  
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package org.rut.util.algorithm.support; yV(#z2|  
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import org.rut.util.algorithm.SortUtil; ,|:.0g[n  
/** qzUiBwUi@  
* @author treeroot *#T: _  
* @since 2006-2-2 S hI1f  
* @version 1.0 .~f )4'T 9  
*/ mr\,"S-`  
public class InsertSort implements SortUtil.Sort{ (p-q>@m  
(,U|H`  
/* (non-Javadoc) 0)oh ab  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3^7+fxYWo  
*/ oMQ4q{&|  
public void sort(int[] data) { An. A1y  
int temp; xE:jcA d$}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1=R$ RI  
} 4=L>  
} L|CdTRgRCB  
} kpgA2u7  
#n>U7j9`O  
} .G{cx=;  
.l1x~(  
冒泡排序: ?+t;\  
[ohLG_9  
package org.rut.util.algorithm.support; FS1\`#Bm)  
0cS$S Mn{  
import org.rut.util.algorithm.SortUtil; U>2KjZB  
%R0 Wq4}  
/** GW,EyOE+~  
* @author treeroot NUV">i.(  
* @since 2006-2-2 {rc3`<%  
* @version 1.0 *D? =Ts  
*/ hIe.Mv-I)  
public class BubbleSort implements SortUtil.Sort{ .-Lrrk)R+  
g0B] ;Y>(  
/* (non-Javadoc) s2O()u-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ip-X r|Bq  
*/ d%7?913  
public void sort(int[] data) { COh#/-`\1  
int temp; >+M[!;m}  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8^UF0>`'  
if(data[j] SortUtil.swap(data,j,j-1); jY=y<R_oK  
} J&A1]T4d  
} /wJ#-DZ  
} & =[!L0{  
} @z1QoZ^w  
\zBi-GI7  
} ZNBowZI  
` UsJaoR#f  
选择排序: I3Vu/&8f|  
%1i:*~g  
package org.rut.util.algorithm.support; ojM'8z 0Hn  
z!g$#hmL>  
import org.rut.util.algorithm.SortUtil; KuJ)alD;1  
9JA@m  
/** w"' Pn`T  
* @author treeroot <2pp6je\0s  
* @since 2006-2-2 6Z_V,LD9L  
* @version 1.0 ]Y [N=G  
*/ :nIMZRJ_!E  
public class SelectionSort implements SortUtil.Sort { XDPR$u8hM  
<x}wy+SG  
/* !n-Sh<8  
* (non-Javadoc) Q!l(2nva  
* Y$JVxly  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8_%GH}{  
*/ +=($mcw#[  
public void sort(int[] data) { "'v+*H 3  
int temp; u@_|4Bp,"  
for (int i = 0; i < data.length; i++) { M/o?D <'  
int lowIndex = i; EH844k8 p  
for (int j = data.length - 1; j > i; j--) { mjD^iu8?  
if (data[j] < data[lowIndex]) { 2.^{4 1:  
lowIndex = j; r&LZH.$oh  
} ~5P9^`KNH  
} }097[-g7  
SortUtil.swap(data,i,lowIndex); 8jz>^.-o  
} qyRN0ZB"A^  
} B?j t?  
/|v4]t-  
} Ch"wp/[  
Ow;thNN  
Shell排序: S^%3Vf}  
8eB,$;i  
package org.rut.util.algorithm.support; kkl'D!z2g  
}g+kU1y  
import org.rut.util.algorithm.SortUtil; mF 1f(  
M(C">L]8  
/** );!ND %  
* @author treeroot \TP$2i%W  
* @since 2006-2-2 T1Py6Q,-  
* @version 1.0 9Q9{>d#"  
*/ c6:uM1V{  
public class ShellSort implements SortUtil.Sort{ IHEbT   
p-s\D_  
/* (non-Javadoc) xa)p ,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B#g~c<4<  
*/ 0qN`-0Yk  
public void sort(int[] data) { _mm(W=KiL  
for(int i=data.length/2;i>2;i/=2){ yY8zTWji_  
for(int j=0;j insertSort(data,j,i); 'Ix@<$~i3F  
} #zsaQg, B  
} j@4MV^F2c  
insertSort(data,0,1); _[[0rn$  
} %IO*(5f  
7hk<{gnr  
/** ^Laqq%PI  
* @param data e|k]te  
* @param j aU6l>G`w  
* @param i ]wid;<  
*/ kZ5#a)U<  
private void insertSort(int[] data, int start, int inc) { \c\~k0u  
int temp; iy~h|YK;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v]SxZLa  
} )WoH>D  
} Z#.d7B"  
} a_Xwi:e<  
.=eEuH  
} WOn53|GQK  
}ktIG|GC  
快速排序: {Z c8,jm  
6k hBT'n  
package org.rut.util.algorithm.support; 1hw.gn*JK>  
N}#Rw2Vl  
import org.rut.util.algorithm.SortUtil; JU)^b V_  
(utP@d^  
/** z|Y54o3  
* @author treeroot =w3A{h"^  
* @since 2006-2-2 .2%t3ul[  
* @version 1.0 =AO (  
*/ ]njNSn  
public class QuickSort implements SortUtil.Sort{ 1J[$f>%n]  
$I9&cNPv  
/* (non-Javadoc) Cf(WO-F^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) # `^nmC/F  
*/ 1@Jp3wW  
public void sort(int[] data) { M-t 9M~  
quickSort(data,0,data.length-1); ,P9F*;Dj  
} $IQPB_:  
private void quickSort(int[] data,int i,int j){ *6yY>LW  
int pivotIndex=(i+j)/2; fnq 3ic"V  
file://swap +6uf6&.@~  
SortUtil.swap(data,pivotIndex,j); )h@PRDI_  
/xUF@%rT  
int k=partition(data,i-1,j,data[j]); 9\EW~OgTu  
SortUtil.swap(data,k,j); }.o.*N  
if((k-i)>1) quickSort(data,i,k-1); AE:(:U\  
if((j-k)>1) quickSort(data,k+1,j); L;0 NR(b!  
Dn)yBA%  
} tU?BR<q  
/** U,!qNi}  
* @param data bD{tsxm[9  
* @param i q0 }u%Yz  
* @param j =@d#@  
* @return V.{HMeE4  
*/ w1I07 (  
private int partition(int[] data, int l, int r,int pivot) { =0?5hxMd  
do{ lo!pslqsn  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [yMSCCswW  
SortUtil.swap(data,l,r); XncX2E4E  
}  Z}t;:yhR  
while(l SortUtil.swap(data,l,r); *+*W# de.  
return l; ND1hZ3(^  
} z-MQGq xR  
:6o%x0l  
} {ENd]@N*  
:#g.%&  
改进后的快速排序: fNLO%\G~2  
Z7bJ<TpZ  
package org.rut.util.algorithm.support; ?wHhBh-Q  
85!]N F  
import org.rut.util.algorithm.SortUtil; [y8(v ~H  
QqQhQGV  
/** f$FO 1B)  
* @author treeroot )(,O~w  
* @since 2006-2-2 4^r6RS@z  
* @version 1.0 m]V#fRC  
*/ \d;)U4__!  
public class ImprovedQuickSort implements SortUtil.Sort { +IS6l*_y>6  
,Vq$>T@z  
private static int MAX_STACK_SIZE=4096; vu)EB!%[  
private static int THRESHOLD=10; '!A}.wF0  
/* (non-Javadoc) {F wvuk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F^/KD<cgK  
*/ 9 C)VW  
public void sort(int[] data) { O1~7#nJ*4[  
int[] stack=new int[MAX_STACK_SIZE]; |@_<^cV110  
&?y@`',a0{  
int top=-1; Ub\^3f  
int pivot; w<H2#d>5!@  
int pivotIndex,l,r; VLV]e_D6s  
y7/4u-_c  
stack[++top]=0; JOG- i  
stack[++top]=data.length-1; $e+4Kt ,  
u D(C jHM>  
while(top>0){ CmXLD} L_x  
int j=stack[top--]; VWzQXo  
int i=stack[top--]; FdE?uw  
hrnE5=iY  
pivotIndex=(i+j)/2; m!KEK\5M?  
pivot=data[pivotIndex]; NxF:s,a6  
g$NUu  
SortUtil.swap(data,pivotIndex,j); x:0swZ5Z  
Gx$m"Jeq\  
file://partition d;<'28A  
l=i-1; {X<g93  
r=j; j5DCc,s  
do{ Aa_@&e  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [;Ih I  
SortUtil.swap(data,l,r); T;3qE1c  
} iT:i '\~  
while(l SortUtil.swap(data,l,r); ]2l}[ w71|  
SortUtil.swap(data,l,j); tf6-DmMH  
6am6'_{  
if((l-i)>THRESHOLD){ wlP3 XF?  
stack[++top]=i; r-YJ$/J  
stack[++top]=l-1; 7vXP|8j  
} ~~|Iw=:  
if((j-l)>THRESHOLD){ O [= L#wi  
stack[++top]=l+1; -ysNo4#e&  
stack[++top]=j; H ~3.F  
} `D|])^"{  
c/ImK`:)4a  
} cz,CL/rno  
file://new InsertSort().sort(data);  OLIMgc(W  
insertSort(data); 842v^ 2  
} q]yw",muT  
/** TgjjwcO Y  
* @param data Q3%]  
*/ Y2tVq})!  
private void insertSort(int[] data) { QuEX|h,F  
int temp; _IdW5G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `uMc.:5\  
} KDb j C'3  
} "Y^j=?1k  
} Zoxblk  
.`~?w+ ~  
} tl /i  
Odwf7>  
归并排序: 9QX!HQ|5y8  
'k]~Q{K$  
package org.rut.util.algorithm.support; eYP^.U)  
3O; H&  
import org.rut.util.algorithm.SortUtil; m8PS84."]M  
lTu& 9)  
/** "P?O1  
* @author treeroot 1#c Tk  
* @since 2006-2-2 qE2VUEv5Y  
* @version 1.0 ROn@tW  
*/ UapU:>!"`  
public class MergeSort implements SortUtil.Sort{ { i6L/U.  
} r(b:}DN  
/* (non-Javadoc) tz2=l.1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7omHorU+  
*/ ),vDn}>  
public void sort(int[] data) { 5,p;b  
int[] temp=new int[data.length]; EPn!6W5^  
mergeSort(data,temp,0,data.length-1);  :QP1!  
} ~}j+~  
$ c-O+~  
private void mergeSort(int[] data,int[] temp,int l,int r){ z/"*-+j  
int mid=(l+r)/2; WPsfl8@D  
if(l==r) return ; O$r/ {{I.  
mergeSort(data,temp,l,mid); n= 4  
mergeSort(data,temp,mid+1,r); RtR@wZ2\s  
for(int i=l;i<=r;i++){ o}G`t Bz  
temp=data; niCK(&z  
} )%S@l<%@?  
int i1=l; 'u x!:b"  
int i2=mid+1; q/zU'7%@  
for(int cur=l;cur<=r;cur++){ *]HnFP  
if(i1==mid+1) ms5?^kS2O  
data[cur]=temp[i2++]; _p4]\LA  
else if(i2>r) <A=1]'1\r  
data[cur]=temp[i1++]; &*" *b\  
else if(temp[i1] data[cur]=temp[i1++]; JDR_k  
else Uc:NW   
data[cur]=temp[i2++]; 6d/Q"As  
} VQqBo~  
} G\ F>*  
r!f UMDS  
} 2#:p:R8I>  
M5w/TN  
改进后的归并排序: TaD;_)(  
7^#f)Vp  
package org.rut.util.algorithm.support; V'{\g|)  
UA*VqK)Y  
import org.rut.util.algorithm.SortUtil; ,DE>:ARZ  
OWwqCPz.  
/** l+ >eb  
* @author treeroot d2Q*1Q@u  
* @since 2006-2-2 8cOft ;|qB  
* @version 1.0 4 j=K3m  
*/ JqMF9|{H  
public class ImprovedMergeSort implements SortUtil.Sort { 6Jq[]l"v  
-_Z4)"k  
private static final int THRESHOLD = 10; %gO/mj3*  
_rB,N#{2R=  
/* -->0e{y  
* (non-Javadoc) CnL=s6XD'  
* H}kSXKO8!8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MuOKauYa  
*/ 3%?tUt  
public void sort(int[] data) { tXtNK2-1  
int[] temp=new int[data.length]; 8O]`3oa>  
mergeSort(data,temp,0,data.length-1); [HY r|T  
} MAkr9AKb,  
-c]AS[(  
private void mergeSort(int[] data, int[] temp, int l, int r) { 9x@|%4Zm"  
int i, j, k; 3E*m.jX  
int mid = (l + r) / 2; $2h%IK>#G  
if (l == r) E>]K#H  
return; J6s]vV q"  
if ((mid - l) >= THRESHOLD) -ymDRoi  
mergeSort(data, temp, l, mid); -MS#YcsV  
else ]87BP%G  
insertSort(data, l, mid - l + 1); f/O6~I&g  
if ((r - mid) > THRESHOLD) e1-tpD:J  
mergeSort(data, temp, mid + 1, r); HuTtp|zM>  
else LE<J<~2Z  
insertSort(data, mid + 1, r - mid); 24#qg '  
L>~Tc  
for (i = l; i <= mid; i++) { ,9bnR;f\  
temp = data; j~{cT/5Y_  
} w1"+HJd  
for (j = 1; j <= r - mid; j++) { 4{F1GW  
temp[r - j + 1] = data[j + mid]; Kb(11$U  
} edo)W mn  
int a = temp[l]; x ']'ODs  
int b = temp[r]; )  FR7t  
for (i = l, j = r, k = l; k <= r; k++) { ]w6Q?%'9  
if (a < b) { =^u;uS[IW  
data[k] = temp[i++]; {V6pC  
a = temp; G~<UP(G  
} else { GA gTy  
data[k] = temp[j--]; * $f`ouJl  
b = temp[j]; ;B=aK"\  
} ia'z9  
} jj[6oNKE1  
} fYUV[Gm  
l{Df{1b.  
/** L_!ShE  
* @param data oVy{~D=  
* @param l O<cP1TF  
* @param i ;`#R9\C=h  
*/ ;Z{D@g+  
private void insertSort(int[] data, int start, int len) { ElQ?|HsQ6p  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7v%c.  
} \_1a#|97e  
} WSHPh hM  
} %BGg?&  
} v,ssv{gU  
*7Q6b 4~"  
堆排序: EB*sd S  
2; ^ME\  
package org.rut.util.algorithm.support; Vbl-Ff  
1'<C-[1  
import org.rut.util.algorithm.SortUtil; Bx#i?=*W  
4MS<t FH)  
/** C")genMH  
* @author treeroot )cJ>&g4]  
* @since 2006-2-2 ~'_cBJ 'XD  
* @version 1.0 ;yJ:W8U]+;  
*/ o]oiJvOr  
public class HeapSort implements SortUtil.Sort{ &+2l#3}  
06pvI}   
/* (non-Javadoc) _Ub `\ytx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !e|\1v'0  
*/ !B3TLe h  
public void sort(int[] data) { R(~wSL*R>  
MaxHeap h=new MaxHeap(); H\S)a FY[  
h.init(data); U7s$';y"%  
for(int i=0;i h.remove(); O{X~,Em=q  
System.arraycopy(h.queue,1,data,0,data.length); W r/-{Wt  
} lv 8EfN  
-)}s{[]d6m  
private static class MaxHeap{ sE"s!s/  
:k/Xt$`  
void init(int[] data){ 2 kDsIEA  
this.queue=new int[data.length+1]; `} PYltW  
for(int i=0;i queue[++size]=data; 7s(tAbPdB  
fixUp(size); 92DM1~ *  
} 6CBk=)qH  
} dDPQDIx  
_B^zm-}8|B  
private int size=0; ~18a&T:  
WBE>0L  
private int[] queue; C{}_Rb'x  
\~5|~|9<  
public int get() { q7X]kr*qx  
return queue[1]; OH\^j1x9I  
} Q7865  
xR1G  
public void remove() { hk~/W}sI  
SortUtil.swap(queue,1,size--); W" 5nS =d%  
fixDown(1); )Z/"P\qo  
} OldOc5D  
file://fixdown "313eeIt%i  
private void fixDown(int k) { NHGTV$T`1  
int j; \]9)%3I  
while ((j = k << 1) <= size) { q\0/6tl_  
if (j < size %26amp;%26amp; queue[j] j++; sAkr-x?+M  
if (queue[k]>queue[j]) file://不用交换 J$3g3%t  
break; @ma(py  
SortUtil.swap(queue,j,k); 5WQl?yMP  
k = j; kTvM,<  
} D4=*yP  
} X$Vi=fvt  
private void fixUp(int k) { fW-C`x  
while (k > 1) { ShB]U5b:k  
int j = k >> 1; 3"y 6|e/5  
if (queue[j]>queue[k]) ! xCo{U=  
break; UD.b b  
SortUtil.swap(queue,j,k); r`O Yq  
k = j; c$g@3gL  
} 1-_r\sb  
} \fA{sehdL  
5f-b>=02  
} ^dQ{vL@9b9  
REUxXaN>Z  
} )% 7P?^>  
/'/I^ab  
SortUtil: Qz~uD'Rs/  
isZ5s\  
package org.rut.util.algorithm; "D(Lp*3hj&  
`R[Hxi  
import org.rut.util.algorithm.support.BubbleSort; }E 'r?N  
import org.rut.util.algorithm.support.HeapSort; _Iy\,<  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8%[pno |0I  
import org.rut.util.algorithm.support.ImprovedQuickSort; @Wu-&Lb  
import org.rut.util.algorithm.support.InsertSort; L:G#>  
import org.rut.util.algorithm.support.MergeSort; `%C-7D'?  
import org.rut.util.algorithm.support.QuickSort; Y %JQ  
import org.rut.util.algorithm.support.SelectionSort; V'vR(Wx  
import org.rut.util.algorithm.support.ShellSort; ux;?WPyr  
[^5\Ww  
/** ks4`h>i  
* @author treeroot L|=5jn9 :  
* @since 2006-2-2 jJ ,_-ui  
* @version 1.0 1+x" 5<(W  
*/ CXlbtpK2k  
public class SortUtil { qkb'@f=  
public final static int INSERT = 1; NX @FUct;  
public final static int BUBBLE = 2; PMzPj,  
public final static int SELECTION = 3; (`tRJWbdz  
public final static int SHELL = 4; :L[>!~YG_n  
public final static int QUICK = 5; aLO^>",  
public final static int IMPROVED_QUICK = 6; PVCoXOqh  
public final static int MERGE = 7; -=ZL(r 1  
public final static int IMPROVED_MERGE = 8; .G0 N+)  
public final static int HEAP = 9; Luq4q95]  
a{5SOe;;  
public static void sort(int[] data) { #z `W ,^C  
sort(data, IMPROVED_QUICK); ,erw(7}'.  
} ;5[KZ8j6Y  
private static String[] name={ ht3.e[%'b  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (`P\nnb  
}; lPTx] =G  
yeo&Qz2vU  
private static Sort[] impl=new Sort[]{ P?54"$b  
new InsertSort(), +EETo):  
new BubbleSort(), FcDS*ZEk!  
new SelectionSort(), 4.RQ3SoDa  
new ShellSort(), zKJ2 ~=  
new QuickSort(), .|UQ)J?s  
new ImprovedQuickSort(), {Cx5m   
new MergeSort(), YDt+1Kw}D  
new ImprovedMergeSort(), y>^a~}Zq  
new HeapSort() G95,J/w  
}; {Mx(|)WkL  
8K 3dwoT  
public static String toString(int algorithm){ M([#Py9h  
return name[algorithm-1]; o96C^y{~S  
} "W|A^@r}  
wVf~FssN  
public static void sort(int[] data, int algorithm) { d$dy6{/YD  
impl[algorithm-1].sort(data); ahB qYA K9  
} x]~TGzS  
w0pMH p'Y  
public static interface Sort { WyL+HB}  
public void sort(int[] data); Fnw:alWr  
} Ha'[uEDb  
Rj8%% G-pt  
public static void swap(int[] data, int i, int j) { .HqFdsm  
int temp = data; WjV15\,  
data = data[j]; K2   
data[j] = temp; 9"[;ld<  
} uV/5f#)  
} V~J5x >O  
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