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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。 [S/]Vk|4  
插入排序: )[>b7K$f  
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package org.rut.util.algorithm.support; TK;*:K8oe  
V(Ps6jR"BS  
import org.rut.util.algorithm.SortUtil; :sBg+MS  
/** t,.MtU>K@  
* @author treeroot $Rsf`*0-  
* @since 2006-2-2 hb"t8_--c  
* @version 1.0 wvm`JOP:A  
*/ |Y!#`  
public class InsertSort implements SortUtil.Sort{ z2&SZ.mk  
+?~'K&@  
/* (non-Javadoc) 1Q6WpS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e1X*}OI  
*/ bO: Ei  
public void sort(int[] data) { 78\:{i->ta  
int temp; (@dh"=Lt\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qcz7IA  
} Poacd;*  
} rs3Uk.Z^ '  
} M? oK@i  
EW{z?/  
} +xwz.:::  
p IXBJk  
冒泡排序: 5yO6szg  
j3rBEQ,R  
package org.rut.util.algorithm.support; o)7gKWjujP  
-tSWYp{  
import org.rut.util.algorithm.SortUtil; ZgLO[Bj  
RR><so%  
/** 0}c *u) ,  
* @author treeroot a $g4 )0eS  
* @since 2006-2-2 0CxQ@~ttl  
* @version 1.0 U6 "U^  
*/ c@:r\]  
public class BubbleSort implements SortUtil.Sort{ LF0gy3  
sD.bBz  
/* (non-Javadoc) F9ry?g=h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [K[tL|EK  
*/ _`L,}=um'  
public void sort(int[] data) { ?^us(o7-  
int temp; bv>;%TF  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 86~HkHliv  
if(data[j] SortUtil.swap(data,j,j-1); LQ?J r>4  
} +}X?+Epm  
} r+0"1\f3  
} -@G |i$!  
} ]6</{b  
V{fYMgv  
} 0b=OK0n!%  
3Qe:d_  
选择排序: >/EmC3?b!  
9tXLC|yl?  
package org.rut.util.algorithm.support; *"0Yr`)S  
pK4I?=A'  
import org.rut.util.algorithm.SortUtil; m~#S76!w  
&~U8S^os  
/** BG"~yyKA  
* @author treeroot \w^iSK-  
* @since 2006-2-2 t-lWvxXe  
* @version 1.0 %$I\\q q>{  
*/ Vf*!m~]Vqi  
public class SelectionSort implements SortUtil.Sort { t/_w}  
-c%GlpZw  
/* 52tIe|KwL  
* (non-Javadoc) R 3 Eh47  
* =V_} z3b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $ # @G!  
*/ N- ?U2V  
public void sort(int[] data) { /]T#@>('  
int temp; Xcicqywe?  
for (int i = 0; i < data.length; i++) { X_|8CD-@6  
int lowIndex = i; P@p(Y2&~g  
for (int j = data.length - 1; j > i; j--) { 1#Dpj.cO#  
if (data[j] < data[lowIndex]) { _$0<]O$  
lowIndex = j; ,Vt7Kiu  
} 8[ 1D4d  
} a |32Pn  
SortUtil.swap(data,i,lowIndex); Rs{L  
} OqY8\>f-  
} gCgMmD=AZ  
O:RPH{D  
} G[r_|-^S  
8=T;R&U^M  
Shell排序: ,|"tLN *m  
WhSQ>h!@s  
package org.rut.util.algorithm.support; KB7CO:  
9<WMM)  
import org.rut.util.algorithm.SortUtil; f/?# 1  
_C&2-tnp  
/** -fz |  
* @author treeroot I_'S|L  
* @since 2006-2-2 }-)2CEj3L%  
* @version 1.0 [U]*OQH`e  
*/ A"\kdxC  
public class ShellSort implements SortUtil.Sort{ 4t|g G`QW7  
b3MgJT"mN  
/* (non-Javadoc) LSNa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %U)/>Z  
*/ 5l2Ph4(  
public void sort(int[] data) { 22`W*e@6h  
for(int i=data.length/2;i>2;i/=2){ p< '#f,o  
for(int j=0;j insertSort(data,j,i); f3|ttUX  
} L"1UUOKy  
} -$?xR](f  
insertSort(data,0,1); wS <d8gw  
} Eg5|XV  
 ]P(:z  
/** 3) zanoYHi  
* @param data c7q1;X{:  
* @param j %(Nu"3|$K=  
* @param i ._~_OVU  
*/ _$NFeqLww  
private void insertSort(int[] data, int start, int inc) { 1@P/h#_Vr  
int temp; k)b}"' I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c#$B;?  
} 05LVfgJ'q  
} {tV)+T  
} %8>s:YG  
4gb2$"!  
} A$WE:<^  
{^Vkxf]  
快速排序: ~+A?!f;-J  
2Auhv!xV  
package org.rut.util.algorithm.support; gtyo~f  
I(#Y\>DG  
import org.rut.util.algorithm.SortUtil; Z2(z,pK  
+b.<bb6  
/** (LA%q6  
* @author treeroot JaXT B"e  
* @since 2006-2-2 G`8gI)$u  
* @version 1.0 iP~5=  
*/ LpGplD lB  
public class QuickSort implements SortUtil.Sort{ #gMMh B=  
#Bg88!-4  
/* (non-Javadoc) CuR\JKdRo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,icgne1j  
*/ mFjX  
public void sort(int[] data) { ,fpu@@2  
quickSort(data,0,data.length-1); ,@tkL!"9q  
} 5:Pp62  
private void quickSort(int[] data,int i,int j){ iN"kv   
int pivotIndex=(i+j)/2; JC(rSs*  
file://swap 4v T!xn  
SortUtil.swap(data,pivotIndex,j); VJDF/)X3$  
>E|@3g +2  
int k=partition(data,i-1,j,data[j]); GRB/N1=  
SortUtil.swap(data,k,j); zu5'Ex`gQa  
if((k-i)>1) quickSort(data,i,k-1); h +.8Rl  
if((j-k)>1) quickSort(data,k+1,j); Sav]Kxq{  
M")JbuI  
} C~ t?<  
/** am{f<v,EI  
* @param data oN)l/"%C7/  
* @param i =SB#rCH  
* @param j h8Q+fHDYv  
* @return X]U,`oE)9  
*/ --d<s  
private int partition(int[] data, int l, int r,int pivot) { ;gY W!rM  
do{ =MEv{9_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F^ 7qLvh  
SortUtil.swap(data,l,r); K~H)XJFF  
} K:Wxx "  
while(l SortUtil.swap(data,l,r); (wEaa'XL  
return l; L@HPU;<  
} l_hM,]T0  
Y;8Ys&/t  
} _7'9omq@  
8*!<,k="9  
改进后的快速排序: "XT7;!  
]|it&4l  
package org.rut.util.algorithm.support; Tz4,lwuWX7  
V%8?f,  
import org.rut.util.algorithm.SortUtil; NZdjS9  
R  5-q{  
/** "CLoM\M)  
* @author treeroot ym9Z:2g  
* @since 2006-2-2 Ve*NM|jg  
* @version 1.0 "+/%s#&  
*/ I 8vv  
public class ImprovedQuickSort implements SortUtil.Sort { MP(R2y  
z}.y ?#  
private static int MAX_STACK_SIZE=4096; j5,1`7\7B  
private static int THRESHOLD=10; B8UtD  
/* (non-Javadoc) veAg?N<c p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C8rD54A'M  
*/ $}_N379&  
public void sort(int[] data) { G# gUd'=M  
int[] stack=new int[MAX_STACK_SIZE]; lYmqFd~p  
(4cWq!ax<$  
int top=-1; @X4Ur+d  
int pivot; a yn6k=F  
int pivotIndex,l,r; \ T/i]z  
L^bt-QbhO  
stack[++top]=0; 7K,Quq.%+  
stack[++top]=data.length-1; :K>v F`SM  
3sIW4Cs7)U  
while(top>0){ MGze IrV  
int j=stack[top--]; ZQXv-"  
int i=stack[top--]; u?5 d%]*  
R''nZ/R  
pivotIndex=(i+j)/2; ) DXN|<A  
pivot=data[pivotIndex]; 0]4kR8R3[  
 N-`Vb0;N  
SortUtil.swap(data,pivotIndex,j); ~qt)r_jW  
.) uUpY%K^  
file://partition B4yU}v  
l=i-1; *GleeJWz  
r=j; 74Xk^  8  
do{ NAjY,)>'K  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G6(k wv4  
SortUtil.swap(data,l,r); Rt:k4Q   
} QEKSbxL\W  
while(l SortUtil.swap(data,l,r); [zv>Wlf,%  
SortUtil.swap(data,l,j); !l|v O(  
6r! Y ~\@  
if((l-i)>THRESHOLD){ 4 AZ~<e\  
stack[++top]=i; T Po%zZo  
stack[++top]=l-1; :xJ]# t..  
} qX{"R.d  
if((j-l)>THRESHOLD){ }/&Q\Sc  
stack[++top]=l+1; (XA=d 4  
stack[++top]=j; R,R[.2Vi  
} Cw42bO  
7 K.&zn  
} uMVM-(g%  
file://new InsertSort().sort(data); %|E'cdvkX  
insertSort(data); nfpkWyIu{  
} `q|&;wP.  
/** mAMi-9  
* @param data VeiJ1=hc  
*/ JLUG=x(dA  
private void insertSort(int[] data) { Py7!_TX  
int temp; ?3X!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ddvSi 6  
} ie|I*;#  
} fHhm)T8KB  
} A tl`J.;G  
F}3<q   
} !`=ms1%U  
^7M hnA  
归并排序: n@n608  
AzAD76iNv  
package org.rut.util.algorithm.support; \$:KfN>WY  
Fx,08  
import org.rut.util.algorithm.SortUtil; ?~~sOf AP  
!<r+h, C  
/** x{4Rm,Dxn  
* @author treeroot GslUN% UJr  
* @since 2006-2-2 HDQhXw!!hc  
* @version 1.0 j1 _ E^  
*/ j,%@%upM  
public class MergeSort implements SortUtil.Sort{ xw_VK1  
vzV,} S*c  
/* (non-Javadoc) n][/c_]q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U |I>CDp  
*/ S Y\ UuZ  
public void sort(int[] data) { S<}2y9F  
int[] temp=new int[data.length]; A{\#.nC/z  
mergeSort(data,temp,0,data.length-1); zRTR  
} :#D?b.=  
5\93-e  
private void mergeSort(int[] data,int[] temp,int l,int r){ s2f9 5<B  
int mid=(l+r)/2; J)1:jieQ  
if(l==r) return ; ~^d. zIN!  
mergeSort(data,temp,l,mid); r /v'h@  
mergeSort(data,temp,mid+1,r); <;O=h; ~|  
for(int i=l;i<=r;i++){ ]=\Mf<  
temp=data; m|q?gX9R  
} +./c=o/v  
int i1=l; n8<o*f&&9>  
int i2=mid+1; dFY]~_P472  
for(int cur=l;cur<=r;cur++){ 3TUW+#[Gu  
if(i1==mid+1) i`[5%6\"&  
data[cur]=temp[i2++]; [MSLVTR  
else if(i2>r) 9$,x^Qx  
data[cur]=temp[i1++]; $r`K4g  
else if(temp[i1] data[cur]=temp[i1++]; kN3T/96  
else tP; &$y.8  
data[cur]=temp[i2++]; )|;*[S4  
} ` nBCCz'Y!  
} `$og]Dn;  
vZV+24YWb  
} @L^Fz$Sx  
.d< +-w2Mu  
改进后的归并排序: <viIpz2jh%  
u@|izRk  
package org.rut.util.algorithm.support; aE}1~`  
u\YH,  
import org.rut.util.algorithm.SortUtil; iku8T*&uc  
_XT],"  
/** '[#a-8-JY_  
* @author treeroot ~3}Gu^@  
* @since 2006-2-2 o(xRq;i  
* @version 1.0 Ol,;BZHc\  
*/ Gvo(iOU  
public class ImprovedMergeSort implements SortUtil.Sort { (Wkli:Lq  
|1^>n,C  
private static final int THRESHOLD = 10; _^4\z*x  
1*S5:7Tb  
/* p:M#F:  
* (non-Javadoc) lB!`,>"c  
* eUQ.,mP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !:e|M|T'I*  
*/ Hw"ik6  
public void sort(int[] data) { b *IJ +  
int[] temp=new int[data.length]; B{|g+c%  
mergeSort(data,temp,0,data.length-1); /CpUq;^  
} 3/I Q]8g"  
M=[/v/M=  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2m. RM&TdB  
int i, j, k; H <CsB  
int mid = (l + r) / 2; i^P@?  
if (l == r) Z J(/cD  
return; Z=%+U _,  
if ((mid - l) >= THRESHOLD) ?fv?6r  
mergeSort(data, temp, l, mid); qGMM3a)Q  
else ';` fMcN  
insertSort(data, l, mid - l + 1); l,uYp"F,ps  
if ((r - mid) > THRESHOLD) eeIh }t>[  
mergeSort(data, temp, mid + 1, r); x4v@Kk/  
else w+Ve T@  
insertSort(data, mid + 1, r - mid); }qfr&Ffh@  
8Ml&lfn_8  
for (i = l; i <= mid; i++) { 'Z2:u!E  
temp = data; 7L)1mB.  
} tB.;T0n  
for (j = 1; j <= r - mid; j++) { =jD[A>3I  
temp[r - j + 1] = data[j + mid]; RAR0LKGX  
} A7U'>r_.  
int a = temp[l]; CG'NC\x5  
int b = temp[r]; R`=3lY;  
for (i = l, j = r, k = l; k <= r; k++) { 3nuf3)  
if (a < b) { *D`qcv  
data[k] = temp[i++]; 'G6TSl  
a = temp;  [+$l/dag  
} else { Z:f0>  
data[k] = temp[j--]; pTq,"}J!+  
b = temp[j]; U -~%-gFC  
} GypZ!)1  
} 8xhXS1  
} GZT}aMMSJ  
}C>Q  
/** 1"46O Cu{  
* @param data i} 96, {  
* @param l P8NKp O\  
* @param i >JT{~SRB|Y  
*/ U`q[5U"  
private void insertSort(int[] data, int start, int len) { ^B@4 w\t  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); GkMNV7"m  
} T#Pz_ hAu  
} 04tUf3 >  
} AIsM:sV]  
} 2'g< H-[  
=fMSmn1S  
堆排序: O{8"f\*  
zO{$kT\r&  
package org.rut.util.algorithm.support; )6)|PzMQ'  
j)\&#g0u6  
import org.rut.util.algorithm.SortUtil; 7'FDI`e[  
mOwgk7s[ J  
/** > 7!aZO  
* @author treeroot _dqjRhu  
* @since 2006-2-2 _5a]pc$\Y]  
* @version 1.0 >`*iM  
*/ ^vm[`M  
public class HeapSort implements SortUtil.Sort{ cJA0$)JP&  
x( w <U1  
/* (non-Javadoc) &Pxt6M\d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i=_leC)rl  
*/ sb4)@/Q7j  
public void sort(int[] data) { %u }|4BXoh  
MaxHeap h=new MaxHeap(); IyG5Rj2  
h.init(data); T Uhp  
for(int i=0;i h.remove(); *pP"u::S  
System.arraycopy(h.queue,1,data,0,data.length); 0kgK~\^,.O  
} yp5*8g5  
3M{!yPlj  
private static class MaxHeap{ rP ;~<IxEr  
nR/; uTTz  
void init(int[] data){ D,xWc|V  
this.queue=new int[data.length+1]; qt]QO1pAd  
for(int i=0;i queue[++size]=data; `.a L>hf  
fixUp(size); F$r8 hj`  
} 567ot|cc  
} 5!#"8|oY  
el!Bi>b9c!  
private int size=0; w|WZEu:0|  
^a; V-US  
private int[] queue; GQqw(2Ub}  
!N$4.slr<p  
public int get() { =D5@PHpv(  
return queue[1]; p@i U}SUaE  
} X2@mQ&n  
$Br^c< y  
public void remove() { ~ p; <H  
SortUtil.swap(queue,1,size--); {EJVZG:&  
fixDown(1); *B}vYX  
} :'y  
file://fixdown |U nTd$m  
private void fixDown(int k) { $ajw]2kx  
int j; B0p>'O2  
while ((j = k << 1) <= size) { SUD]Wl7G`r  
if (j < size %26amp;%26amp; queue[j] j++; =)M8>>l  
if (queue[k]>queue[j]) file://不用交换 -Kg@Sj/U}R  
break; UShn)3F  
SortUtil.swap(queue,j,k); U]vNcQj  
k = j; Y@eHp-[  
} H[@}ri<  
} R'dF<&Kj|  
private void fixUp(int k) { 3JW9G04.  
while (k > 1) { fH`1dU  
int j = k >> 1; md$[Bs9  
if (queue[j]>queue[k]) } Q1$v~  
break;  p<*-B  
SortUtil.swap(queue,j,k); 1)_f9GR  
k = j; TG?;o/  
} @<vDR">  
} 0IDHoNaT<  
0O-p(L=  
} 9Z*`{  
R5]R pW=G  
} WY 2b  
6./&l9{h+  
SortUtil: EVO5+  
s^C*uP;R  
package org.rut.util.algorithm; `m2F.^qrr  
DDAqgx  
import org.rut.util.algorithm.support.BubbleSort; $#R.+B  
import org.rut.util.algorithm.support.HeapSort; ([f6\Pw\ <  
import org.rut.util.algorithm.support.ImprovedMergeSort; w2{k0MW  
import org.rut.util.algorithm.support.ImprovedQuickSort; uzp !Y&C  
import org.rut.util.algorithm.support.InsertSort; F!]UaEmV  
import org.rut.util.algorithm.support.MergeSort; eg(xN/D  
import org.rut.util.algorithm.support.QuickSort; {h9#JMIA  
import org.rut.util.algorithm.support.SelectionSort; );))kYr  
import org.rut.util.algorithm.support.ShellSort; zN5i}U=|r  
e}[$ =  
/** nt;A7pI`  
* @author treeroot yE"hgdL  
* @since 2006-2-2 )W57n)]  
* @version 1.0 hNx`=D9[7  
*/ d0-}Xl  
public class SortUtil { pbqa  
public final static int INSERT = 1; =1yUH9\,b  
public final static int BUBBLE = 2; BOwkC;Q[  
public final static int SELECTION = 3; ~Ag !wj  
public final static int SHELL = 4; Q]6nW[@j'  
public final static int QUICK = 5; ?'T>/<(  
public final static int IMPROVED_QUICK = 6; $Fr2oSTT)  
public final static int MERGE = 7; M8juab%y  
public final static int IMPROVED_MERGE = 8; rcI(6P<*  
public final static int HEAP = 9; Eq.c;3  
t:=Ui/!q  
public static void sort(int[] data) { O')Ivm,E  
sort(data, IMPROVED_QUICK); Kq{s^G  
} ~S-x-cZ  
private static String[] name={ ?WAlW,H>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $%1[<}<  
}; Q8:u1$}  
U +mx@C_  
private static Sort[] impl=new Sort[]{ ' J-(v  
new InsertSort(), _|A)ueY  
new BubbleSort(), $~D`-+J  
new SelectionSort(), Nm,v E7M  
new ShellSort(), <[~x]-  
new QuickSort(), R1P,0Yf  
new ImprovedQuickSort(), e'\I^'`!M  
new MergeSort(), "r"Y9KODm  
new ImprovedMergeSort(), ^kt"n( P5  
new HeapSort() v11mu2  
}; H[>_LYZ8  
x[(2}Qd  
public static String toString(int algorithm){ )3..7ht3^5  
return name[algorithm-1]; <CA lJ  
} E0)v;yRcw  
ie$=3nZJ}  
public static void sort(int[] data, int algorithm) { ~!:F'}bj  
impl[algorithm-1].sort(data); m2_&rjGz  
} ^1Yx'ua'  
{.!:T+'Xi\  
public static interface Sort { mDM]RAub)  
public void sort(int[] data); '|]zBpz  
} %djx0sy  
! prU!5-  
public static void swap(int[] data, int i, int j) { dvL'>'g  
int temp = data; <|2_1[,sl  
data = data[j]; Kjf#uU.7  
data[j] = temp; "\>3mVOb  
} nmSpNkJ5  
} +i)1 jX<  
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