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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。 (L0 hS'  
插入排序: TFC!u 0Y"$  
rZ.a>'T4  
package org.rut.util.algorithm.support; dI0bTw|s/  
[ lzy &To  
import org.rut.util.algorithm.SortUtil; (>LHj]}K  
/** Iwt2}E(e  
* @author treeroot @b!R2Yq  
* @since 2006-2-2 "dK|]w8  
* @version 1.0 ,-7/]h,l  
*/ OHP3T(Q5  
public class InsertSort implements SortUtil.Sort{ {|5$1v   
j,56Lh%1  
/* (non-Javadoc) Vr-3M+l=O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L`\`NNQC  
*/ *mQDS.'AB@  
public void sort(int[] data) { Wl !!5\  
int temp; QFNz9c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1V**QSZ1  
} BH#C<0="  
} Ie2w0Cs28  
} gl9pgY1ni  
@r/Id{pCI  
} M8?#%x6;N  
urrO1  
冒泡排序: u_4:#~b  
?b@q5Y  
package org.rut.util.algorithm.support; _PyW=Tj  
5"}y\  
import org.rut.util.algorithm.SortUtil; %%as>}.  
?K4.L?D#J  
/** I[g?Ju >  
* @author treeroot :^H9W^2  
* @since 2006-2-2 Zc4(tf9  
* @version 1.0 8L7Y A)u  
*/ V/(`Ek-  
public class BubbleSort implements SortUtil.Sort{ TRk ?8  
co<2e#p;  
/* (non-Javadoc) 4aalhy<j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1=/doo{^  
*/ Pe$^Mo.q  
public void sort(int[] data) { 6`DwEs?Y{  
int temp; V`g\ja*Y  
for(int i=0;i for(int j=data.length-1;j>i;j--){ m6_~`)R8  
if(data[j] SortUtil.swap(data,j,j-1); *h*j%  
} C,|nmlDN  
} &h7smZO5j  
} ]5} -y3  
} s6uF5]M;2  
)|U_Z"0H^  
} c y=I0  
bU;}!iVc]  
选择排序: Mvy6"Q:  
LN@E\wRw{r  
package org.rut.util.algorithm.support; :"M9*XeHO  
-Q<z1vz  
import org.rut.util.algorithm.SortUtil; t(J![wB}  
OwG6i|q  
/** +={  
* @author treeroot *F\T}k7  
* @since 2006-2-2 .mvB99P{<  
* @version 1.0 x[vpoB+c  
*/ g(-;_j!=  
public class SelectionSort implements SortUtil.Sort { Ci]'G>F@"  
2YL`3cgfb  
/* Q3'fz 9v  
* (non-Javadoc) 4*0:bhhhf_  
* vnz[w=U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TpJg-F  
*/ Zg)_cRR   
public void sort(int[] data) { )ZT6:)  
int temp; =d go!k  
for (int i = 0; i < data.length; i++) { Q^$ghZ6V  
int lowIndex = i; 4 t&gW  
for (int j = data.length - 1; j > i; j--) { >EBZ$X  
if (data[j] < data[lowIndex]) { WW//heJe-  
lowIndex = j; x`]Of r'  
} 8O~0RYk  
} nGq]$h  
SortUtil.swap(data,i,lowIndex); Ef2Y l  
} y]yine  
} jMN)?6$=  
y=[gQJ6~r  
} lq:]`l,6@  
Sp 7u_Pq{  
Shell排序: /Jh1rck  
$T"h";M)s  
package org.rut.util.algorithm.support; S:/{  
7n\ThfH{  
import org.rut.util.algorithm.SortUtil; \:]DFZ=!  
6yE'/VB<  
/** ;$vLq&(}  
* @author treeroot }czsa_  
* @since 2006-2-2 xU@1!%l@  
* @version 1.0 _,DO~L  
*/ 4cott^K.  
public class ShellSort implements SortUtil.Sort{ J6*f Uh  
DW1@<X  
/* (non-Javadoc) <(fdHQD!7>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xl#Dw bx  
*/ TG1P=g5h  
public void sort(int[] data) { Ba/RO36&c  
for(int i=data.length/2;i>2;i/=2){ ,%A)"doaG  
for(int j=0;j insertSort(data,j,i); bRWIDPh  
} 8V6=i'GK  
} A[RHw<  
insertSort(data,0,1); GHv{   
} Vd,'  s  
7e1dEgn  
/** @'*eC}\E  
* @param data 'z)hG#{I  
* @param j LyGUvi  
* @param i :%N*{uy  
*/ wz|DT3"Xs  
private void insertSort(int[] data, int start, int inc) { y|^EGnaE  
int temp; 8s<^]sFP  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ks#A<! ;=  
} 3I|O^   
} \,2gTi,=  
} w'A tf  
'0 ]r<O  
} kB8 Mi  
N*Yy&[  
快速排序: $ K})Q3FNi  
K]X` sH:  
package org.rut.util.algorithm.support; (4~X}:  
Mal<iNN  
import org.rut.util.algorithm.SortUtil; ba8 6 N  
/-Wuq`P/ T  
/** "l TZ|k^  
* @author treeroot 'qjX$]H  
* @since 2006-2-2 W]_g4,T>  
* @version 1.0 rOW;yJ[  
*/ Kv}k*A% S  
public class QuickSort implements SortUtil.Sort{ %4,xx'`  
e8oKn&  
/* (non-Javadoc) f e|g3>/|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S.: 7k9  
*/ 6JSY56v  
public void sort(int[] data) { P'sfi>A  
quickSort(data,0,data.length-1); T '.[F  
} R"Kz!NTB  
private void quickSort(int[] data,int i,int j){ b vRB  
int pivotIndex=(i+j)/2; gY!N3 *:  
file://swap lkb2?2\+  
SortUtil.swap(data,pivotIndex,j); _%{0?|=  
%%&e"&7HE  
int k=partition(data,i-1,j,data[j]); oE1M/*myS  
SortUtil.swap(data,k,j); {SJsA)9:#  
if((k-i)>1) quickSort(data,i,k-1); )B;M  
if((j-k)>1) quickSort(data,k+1,j); i E9\_MA  
m<{"}4'  
} /Pk:4,  
/** O=aw^|oj]  
* @param data +i.u< T  
* @param i r!kLV)_  
* @param j B!}BM}r  
* @return ?eV_ACpZ8  
*/ @ .gPJMA  
private int partition(int[] data, int l, int r,int pivot) { =2%VZE7Vm  
do{ $e BQH  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v5T`K=qC  
SortUtil.swap(data,l,r); 3 CM^j<9  
} %G[/H.7s-  
while(l SortUtil.swap(data,l,r); F;P5D<  
return l; hU" F;4p  
} o\4CoeG  
BxdX WO  
} zJY']8ah  
w>[T&0-N  
改进后的快速排序: > H BJk:  
n(>C'<otj  
package org.rut.util.algorithm.support; &RW`W)0;  
j0x5@1`6G  
import org.rut.util.algorithm.SortUtil; r+S;B[Vd  
@}DFp`~5|  
/** WL U}  
* @author treeroot KQ{Lt?S  
* @since 2006-2-2 < bFy(+  
* @version 1.0 uE`r/=4  
*/ {q,?<zBzu  
public class ImprovedQuickSort implements SortUtil.Sort { Qdu$Os  
vd (?$  
private static int MAX_STACK_SIZE=4096; [jrqzB  
private static int THRESHOLD=10; T@P!L  
/* (non-Javadoc) N*_"8LIfi_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vk'rA{x  
*/ 8eJE>g1J  
public void sort(int[] data) { ,q#2:b<E  
int[] stack=new int[MAX_STACK_SIZE]; #!})3_Qc(y  
^=+e?F`:{  
int top=-1; YJ,*(A18  
int pivot; }G'XkoI&  
int pivotIndex,l,r; ubbnFE&PD  
G;s"h%Xw98  
stack[++top]=0; O~PChUU*Y  
stack[++top]=data.length-1; 0Z HDBh  
&94W-zh  
while(top>0){ c -B/~&  
int j=stack[top--]; R0wf#%97  
int i=stack[top--]; aQUGNa0+d  
{DwIjy31T  
pivotIndex=(i+j)/2; m#\[m<F  
pivot=data[pivotIndex]; =45W\  
kRlA4h1u_$  
SortUtil.swap(data,pivotIndex,j); q]FBl}nwl%  
 3-|3`(  
file://partition =6\LIbO  
l=i-1; uel{`T[S  
r=j; J,5+47b1}R  
do{ x[X`a  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); vHcqEV|P/n  
SortUtil.swap(data,l,r); %e? fH.)  
} Td hTQ  
while(l SortUtil.swap(data,l,r); }mk>!B}=  
SortUtil.swap(data,l,j); y=Q!-~5|fF  
E\M-k\cSj  
if((l-i)>THRESHOLD){ BBnq_w"a  
stack[++top]=i; 7-* =|gl+  
stack[++top]=l-1; V%NeZ1{ e  
} K_ke2{4Jm  
if((j-l)>THRESHOLD){ UyiJU~r1  
stack[++top]=l+1; aG{$Ic  
stack[++top]=j; u9Y3?j,oC  
} a]B[`^`z  
U|5-0u5  
} ,_ .v_  
file://new InsertSort().sort(data); S3Y2O x  
insertSort(data); P@0Y./Ds  
} |"]PCb)!  
/** I=Ij dwbH  
* @param data wK!~tYxP  
*/ h|)vv4-d|  
private void insertSort(int[] data) { lV6dm=k  
int temp; jc:s` 4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \/5RL@X}  
} |+}G|hx@9  
} lzhqcL"  
} gl7|H&&xV  
Hd &{d+B  
} C6  "  
qCPmbg  
归并排序: %d;ezY'2  
M 2q"dz   
package org.rut.util.algorithm.support; %,UPJn  
Vf $Dnu@}z  
import org.rut.util.algorithm.SortUtil; T .n4TmF  
1^G{tlA-  
/** /*rhtrS)  
* @author treeroot QHlU|dR)Ry  
* @since 2006-2-2 #hw>tA6  
* @version 1.0 Z(GfK0vU  
*/ GTl xq%?b  
public class MergeSort implements SortUtil.Sort{ w$fJ4+  
zpjqEEY;  
/* (non-Javadoc) =#xK=pRy;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e0HfP v_  
*/  QLKK.]  
public void sort(int[] data) { HM9fjl[  
int[] temp=new int[data.length]; ,"2TArC'z  
mergeSort(data,temp,0,data.length-1); ~E5z"o6$  
} D Ml?o:l  
V 9;[M;  
private void mergeSort(int[] data,int[] temp,int l,int r){ 'T8W!&$  
int mid=(l+r)/2;  Mps5Vv  
if(l==r) return ; pv,45z0  
mergeSort(data,temp,l,mid); 5h{`<W  
mergeSort(data,temp,mid+1,r); +-$Ko fnM  
for(int i=l;i<=r;i++){ 7h9U{4r: M  
temp=data; 19UN*g3(  
} u bW]-U=T  
int i1=l; xTz%nx  
int i2=mid+1; O XP\R  
for(int cur=l;cur<=r;cur++){ g(4bBa9y  
if(i1==mid+1) n/4i|-^  
data[cur]=temp[i2++]; r 2:2,5_  
else if(i2>r) /)3Lnn{W  
data[cur]=temp[i1++];  aSutM  
else if(temp[i1] data[cur]=temp[i1++]; 0<p{BL 8  
else R.9V,R5  
data[cur]=temp[i2++]; PoSpkJH  
} a;AzY'R  
} >QkP7Kb  
8V/L:h#7  
} ci9R.U)  
L=; -x9  
改进后的归并排序: ??&<k   
vX|UgK?2^  
package org.rut.util.algorithm.support; *m+BuGt|  
9&]M**X  
import org.rut.util.algorithm.SortUtil; \wvg,j=  
+-?/e-z")  
/** yYZxLJ='  
* @author treeroot 5@~|*g[  
* @since 2006-2-2 u9qMqeF  
* @version 1.0 w n|]{Ww35  
*/ 1GCzyBSbb  
public class ImprovedMergeSort implements SortUtil.Sort { Vr.Y/3N&'  
dtt~ Bd  
private static final int THRESHOLD = 10; cC{"<fYF  
s%4M$ e  
/* "Zv~QwC  
* (non-Javadoc) WYcA8 X/  
* 5e8AmY8;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }28=  
*/ , E )|y4  
public void sort(int[] data) { 0MF}^"R  
int[] temp=new int[data.length]; c]k*}W3T  
mergeSort(data,temp,0,data.length-1); _ QOZ sEe  
} $.%rAa_H  
Dh4 6o|P  
private void mergeSort(int[] data, int[] temp, int l, int r) { 8 .>/6M  
int i, j, k; iUk-'   
int mid = (l + r) / 2; @C_KV0i  
if (l == r) )FN;+"IJ  
return; KJn!Ap  
if ((mid - l) >= THRESHOLD) e.d #wyeX  
mergeSort(data, temp, l, mid); bpAv1udX-W  
else nAJdr*`a,5  
insertSort(data, l, mid - l + 1); (.Y/  
if ((r - mid) > THRESHOLD) rh*sbZ68>E  
mergeSort(data, temp, mid + 1, r); 1Tp/MV/>  
else $g9**b@  
insertSort(data, mid + 1, r - mid); k;W@LfP  
OHr Y(I6  
for (i = l; i <= mid; i++) { ZD/jX_!t  
temp = data; +0wT!DZW\=  
} l\0w;:N3  
for (j = 1; j <= r - mid; j++) { HvwYm.$zE  
temp[r - j + 1] = data[j + mid]; `mfq 2bVc  
} /UcV  
int a = temp[l]; iSLGwTdLn  
int b = temp[r]; ,i9Byx#TN  
for (i = l, j = r, k = l; k <= r; k++) { . 5y"38e  
if (a < b) { ZzGahtx)Y  
data[k] = temp[i++]; y m,H@~  
a = temp; iRo.RU8>  
} else { ;h=*!7:  
data[k] = temp[j--]; #FOqP!p.E  
b = temp[j]; Cs3^9m6;d  
} y;cUl, :v  
} zdl%iop3e  
} = {'pUU  
EI~"L$?  
/** .jw}JJ  
* @param data {]*x*aa\  
* @param l rHge~nY<  
* @param i J@pb[OL,  
*/ (:V>Hjt  
private void insertSort(int[] data, int start, int len) {  +ECDD'^!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _Q%vK*n  
} ^g1f X1  
} S{]7C?4`  
} 0-Y:v(|.  
} Jq.lT(E8D  
O=cxNy-I  
堆排序: u6V/JI}g  
s'aip5P  
package org.rut.util.algorithm.support; n"PJ,ao  
[D "t~QMr  
import org.rut.util.algorithm.SortUtil; Y}*\[}l:&x  
'n QVj  
/** 7tM9u5FF  
* @author treeroot sZWaV4  
* @since 2006-2-2 g>0XxjP4  
* @version 1.0 B$3 ?K  
*/ $0oO &)*  
public class HeapSort implements SortUtil.Sort{ l- pe4x  
dC e4u<so\  
/* (non-Javadoc) 5<pftTcZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kv,%(en]  
*/ hVT~~n`Rj  
public void sort(int[] data) { )5j;KI%t  
MaxHeap h=new MaxHeap(); V3;.{0k  
h.init(data); *_Z#O,  
for(int i=0;i h.remove(); #ge)2  
System.arraycopy(h.queue,1,data,0,data.length); \@3Qi8u//  
} 9Ya<My  
w~_;yQ  
private static class MaxHeap{ R3)57OyV  
[XRCLi}  
void init(int[] data){ l+V,DCE  
this.queue=new int[data.length+1]; QVF]Ci_=  
for(int i=0;i queue[++size]=data; "Td`AuP@,  
fixUp(size); 4nH*Ui!T  
} `-`qdda  
} R+q"_90_  
V}d 9f 2  
private int size=0; I KtB;  
s]T""-He  
private int[] queue; l kyzNy9R  
CycUeT  
public int get() { I1X /Lj=  
return queue[1]; M<SdPC(+  
} &1l=X]%  
IKMeJ(:S  
public void remove() { #j#_cImE  
SortUtil.swap(queue,1,size--); |py6pek|  
fixDown(1); uPYmHA} _/  
} ANIz, LS  
file://fixdown +_v$!@L8  
private void fixDown(int k) { W"{v2xi  
int j; QB:i/9  
while ((j = k << 1) <= size) { #po5_dE\*  
if (j < size %26amp;%26amp; queue[j] j++; lf>*Y.!@me  
if (queue[k]>queue[j]) file://不用交换 {mWui9 %M  
break; [S.ZJUns  
SortUtil.swap(queue,j,k); RT93Mt%P  
k = j; < v]3g  
} <R%;~){  
} 6Ao%>;e*  
private void fixUp(int k) { LA_3=@2.H  
while (k > 1) { JG C=(;  
int j = k >> 1; *`j-i  
if (queue[j]>queue[k]) _A<u#.yd  
break; }?cGf- c  
SortUtil.swap(queue,j,k); tt%MoQ)   
k = j; A*. /,KT  
} JOjoiA  
} 5Zmw} M  
oLWJm  
} i{!T&8  
xD&^j$Em  
} Lb{e,JH  
S[tE&[$(p  
SortUtil: nf 1#tlIJd  
IchCACK  
package org.rut.util.algorithm; hlu:=<B  
,+qVu,  
import org.rut.util.algorithm.support.BubbleSort; 22kpl)vbU  
import org.rut.util.algorithm.support.HeapSort; 2,lqsd:xM  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2([2Pb3<"  
import org.rut.util.algorithm.support.ImprovedQuickSort; &U+ _ -Ph  
import org.rut.util.algorithm.support.InsertSort; \BWyk A>  
import org.rut.util.algorithm.support.MergeSort; j1SMeDDM ~  
import org.rut.util.algorithm.support.QuickSort; k5kdCC0FCk  
import org.rut.util.algorithm.support.SelectionSort; -(`OcGM'L  
import org.rut.util.algorithm.support.ShellSort; _3]][a,  
{_(\` >  
/** as=m`DqOh  
* @author treeroot ?[*0+h`en  
* @since 2006-2-2 &t5{J53  
* @version 1.0 6"c1;P!4   
*/ V{|}}b?w?  
public class SortUtil { 2tROT][J%  
public final static int INSERT = 1; Ladsw  
public final static int BUBBLE = 2; Xtwun  
public final static int SELECTION = 3; AamVms  
public final static int SHELL = 4; =9kN_:-  
public final static int QUICK = 5; h._nK\  
public final static int IMPROVED_QUICK = 6; k{gLMl  
public final static int MERGE = 7; C^ Q tSha  
public final static int IMPROVED_MERGE = 8; ,!V]jP)  
public final static int HEAP = 9; @&D?e:|!U  
;> m"x  
public static void sort(int[] data) { X1 ZgSs+i  
sort(data, IMPROVED_QUICK); s >0Nr  
} [-&L8Un  
private static String[] name={ )1g"?]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #fj/~[Ajv  
}; 2F%W8Y 3  
LZ@|9!KDw  
private static Sort[] impl=new Sort[]{ & c Ny  
new InsertSort(), Mv c`)_Md  
new BubbleSort(), ;['[?wk  
new SelectionSort(), H+ h07\? %  
new ShellSort(), ogFKUD*h&>  
new QuickSort(), z} '!eCl  
new ImprovedQuickSort(), w&4~Q4  
new MergeSort(), Mg#j3W}]  
new ImprovedMergeSort(), X-Wz:NA  
new HeapSort() )otb>w5  
}; (H oqR  
u*  
public static String toString(int algorithm){  p!Eft/A(  
return name[algorithm-1]; Q-#$Aa  
} kY]W Qu  
x.1-)\  
public static void sort(int[] data, int algorithm) { &[2U$`P`V  
impl[algorithm-1].sort(data); ^\B :R,  
} 50dGBF  
`Q+moX  
public static interface Sort { 6 z,&i  
public void sort(int[] data); H A}f,),G  
} XPB9~::  
_= #zc4U  
public static void swap(int[] data, int i, int j) { /v095H@  
int temp = data; v){ .Z^_C  
data = data[j]; /ug8]Lo0  
data[j] = temp; xf%4, JQ  
} \, !Q Jp4  
} g~UUP4<$"  
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