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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。 ~~&M&Fe  
插入排序: -O\`G<s%  
c(:GsoO  
package org.rut.util.algorithm.support; d4/ZOj+%  
#-{4F?DA]y  
import org.rut.util.algorithm.SortUtil; \7RP6o  
/** 'Q# KjY  
* @author treeroot ].eGsh2  
* @since 2006-2-2 ral0@\T  
* @version 1.0 >Gkkr{s9  
*/ xGjEEBL  
public class InsertSort implements SortUtil.Sort{ |2Q;SaI^\  
rLVS#M#&e>  
/* (non-Javadoc) q*>`HTPcU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -g~$HTsGm  
*/ mU;TB%#)  
public void sort(int[] data) { 8d-_'MXk3  
int temp; N7XRk= J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y:O%xtGi  
} {=TD^>?  
} Y`%:hvy~  
} L49`=p<  
}JS?42CTaV  
} /IODRso/!  
^XV$J-  
冒泡排序: {C [7V{4(%  
[!"u&iu`  
package org.rut.util.algorithm.support; CZ|R-ky6p  
l78zS'  
import org.rut.util.algorithm.SortUtil; vNP,c]:%  
Zx@{nVoYe~  
/** EI'(  
* @author treeroot LbnR=B!  
* @since 2006-2-2 ;L|%H/SH  
* @version 1.0 13Q|p,^R  
*/ oE}1D?3Sp  
public class BubbleSort implements SortUtil.Sort{ E}UlQq  
ACs?m\$Q  
/* (non-Javadoc) dAR):ZKq?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [E+#+-n7  
*/ 94Z~]C  
public void sort(int[] data) { m8.sHw  
int temp; Jjv, )@yo  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9M<{@<]dm  
if(data[j] SortUtil.swap(data,j,j-1); ]w({5i  
} c8A //  
} !$P&`n]@  
} S7@.s`_{w  
} ]*?qaIdqu  
'6WaG hvO  
} lCDXFy(E  
X2~>Z^, U  
选择排序: *:wu{3g}M`  
0Db#W6*^  
package org.rut.util.algorithm.support; *G^ QS"%  
Drz#D1-2  
import org.rut.util.algorithm.SortUtil; Z':}ZXy]  
- 3kg,=HU;  
/** x,pzX(  
* @author treeroot L"9,K8  
* @since 2006-2-2 npZ=x-ce  
* @version 1.0 IZ "d s=w  
*/ vn7<>k> dx  
public class SelectionSort implements SortUtil.Sort { p\1-.  
<rNCb;  
/* 4 QD.'+ L  
* (non-Javadoc) y]yp8Bs+  
* x pT85D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f3h^R20qmO  
*/ 5 ^+> *z  
public void sort(int[] data) { ;CD@RP{$n  
int temp; qdWsP9}q  
for (int i = 0; i < data.length; i++) { 1d,;e:=j  
int lowIndex = i; hT]\*},  
for (int j = data.length - 1; j > i; j--) { > -OQk"o  
if (data[j] < data[lowIndex]) { P >HEV a  
lowIndex = j; 6x7pqH M  
}  1)U%p  
} rfku]A$  
SortUtil.swap(data,i,lowIndex); ?*){%eE  
} Q0s!]Dk  
} N;Wm{~Zhb  
 $ac VJI?  
}  ,SNN[a  
0P_qtS  
Shell排序: ?VmE bl  
] X%T^3%G  
package org.rut.util.algorithm.support; '#L.w6<B  
\L Gj]mb1  
import org.rut.util.algorithm.SortUtil; FMh SHa/B  
RX3P %xZ  
/** v!JQ;OX  
* @author treeroot BxVo>r  
* @since 2006-2-2 0rP`BK|  
* @version 1.0 $9)|cO  
*/ 'tm%3` F  
public class ShellSort implements SortUtil.Sort{ WW\t<O;z  
k` cz$>  
/* (non-Javadoc) :+: vBrJm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Sl]8IZ  
*/ [oqb@J2  
public void sort(int[] data) { l.NV]up +  
for(int i=data.length/2;i>2;i/=2){ lu2"?y[2  
for(int j=0;j insertSort(data,j,i); FwKT_XkY  
} {N!Xp:(<7_  
} ?VaWOwWI  
insertSort(data,0,1); lky{<jZ%  
} ] ;" blB  
V~([{  
/** lC):$W  
* @param data gJz~~g'  
* @param j ;w--fqxVl  
* @param i Pv,Q*gh`  
*/ x=s=~cu4,  
private void insertSort(int[] data, int start, int inc) { 5F&xU$$a-  
int temp; Kw_> X&GcJ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $ReoIU^<  
} FtHR.S= u  
} IY jt*p5  
} QU{|S.\  
b5NPG N  
} M*6}#ST  
;iEr+  
快速排序: U (*k:Fw  
kB:6e7D|[  
package org.rut.util.algorithm.support; 2?J[D7  
T-S6`^_L  
import org.rut.util.algorithm.SortUtil; Qv4g#jX{  
D_VAtz  
/** *c<0cHv*  
* @author treeroot *PEk+e  
* @since 2006-2-2 8Evon&G59  
* @version 1.0 4K{<R!2I  
*/ 1HPYW7jk@"  
public class QuickSort implements SortUtil.Sort{ 6'E3Q=}d  
 # ub!  
/* (non-Javadoc) H & L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l.gt+e  
*/ c0}* $e  
public void sort(int[] data) { <~D-ew^BU  
quickSort(data,0,data.length-1); $w%n\t>B  
} 1j4(/A  
private void quickSort(int[] data,int i,int j){ 1T96W :   
int pivotIndex=(i+j)/2; ~m@v ~=  
file://swap ^6c=[N$aW  
SortUtil.swap(data,pivotIndex,j); Pi7IBz  
uj 6dP  
int k=partition(data,i-1,j,data[j]); G3r9@ 2OC  
SortUtil.swap(data,k,j); 01~&H8 =  
if((k-i)>1) quickSort(data,i,k-1); `GGACH3#s  
if((j-k)>1) quickSort(data,k+1,j); x|3f$ =b  
y<#?z 8P  
} e&*< "WN  
/** |^ K"#K  
* @param data q4Z9;^S  
* @param i e;_ cC7  
* @param j C B&$tDi  
* @return e[`u:  
*/ Qqju6}+  
private int partition(int[] data, int l, int r,int pivot) { E}&Z=+v}  
do{ F^knlv'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b d!|/Lk  
SortUtil.swap(data,l,r); 0qND2_  
} k#*tf:R  
while(l SortUtil.swap(data,l,r); /1s|FI$-L  
return l; 4^|;a0Qy]  
} &}N=a  
@t W;(8-  
} UM?{ba9  
~k}>CNTr  
改进后的快速排序: 4&TTPcSt;  
KaRdO  
package org.rut.util.algorithm.support; )+!~xL  
r&qF v)0!`  
import org.rut.util.algorithm.SortUtil; OanHG  
8`edskWrU  
/** "w0[l"3 V  
* @author treeroot G?`x$UU  
* @since 2006-2-2 ]gxt+'iAFS  
* @version 1.0  Xn<~ln  
*/ #:C?:RMS  
public class ImprovedQuickSort implements SortUtil.Sort { {OK+d#=  
=Tdh]0  
private static int MAX_STACK_SIZE=4096; 5|I2  
private static int THRESHOLD=10; e7fA-,DV  
/* (non-Javadoc) A$w0+&*=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $8k QM  
*/ N9lCbtn(0x  
public void sort(int[] data) { j9sK P]w  
int[] stack=new int[MAX_STACK_SIZE]; ?hW?w$C  
IO, kGUS  
int top=-1; i Eh -  
int pivot; aqa%B  
int pivotIndex,l,r; T!GX^nn*O  
IIn0w2:i  
stack[++top]=0; 1O<Gg<<,e  
stack[++top]=data.length-1; 5)%bnLxn  
F.nJX ZnJ  
while(top>0){ o\Ocu>:  
int j=stack[top--]; [#}A]1N  
int i=stack[top--]; }4 p3m]   
.Vy*p")"  
pivotIndex=(i+j)/2; Y ;JP r  
pivot=data[pivotIndex]; >o\s'i[  
fWr6f`de  
SortUtil.swap(data,pivotIndex,j); AYB =iLa  
J?Y1G<&  
file://partition t")+ L{  
l=i-1; A..,.   
r=j; ?2#!63[Kg  
do{ !>%U8A  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OI=LuWGQE1  
SortUtil.swap(data,l,r); 7.-g=Rcz  
} UIpW#t  
while(l SortUtil.swap(data,l,r); je9eJUKE  
SortUtil.swap(data,l,j); ^iWcuh_n  
}8+rrzMUB  
if((l-i)>THRESHOLD){ kPh;SCr{  
stack[++top]=i; &3jq'@6  
stack[++top]=l-1; [gZz'q&[)  
} hWzjn5w3  
if((j-l)>THRESHOLD){ . kv/db  
stack[++top]=l+1; 37 #|X*L  
stack[++top]=j; KK}?x6wV0,  
} 7N@4c   
P|rsq|',  
} H<^*V8J 'w  
file://new InsertSort().sort(data); Y Mes314"  
insertSort(data); .Pp;%  
} |2!!>1k  
/** @ y{i.G  
* @param data pHW Qk z(  
*/ :'\4%D=w  
private void insertSort(int[] data) { w&A &BE^O/  
int temp; ^qs{Cf$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )X8?m <cG  
} 3ug|H  
} 4v@urW s  
} fx W,S  
6]GEn=t  
} r6B\yH2  
_`Ojh0@00  
归并排序: WK{{U$:$  
&e#>%0aS  
package org.rut.util.algorithm.support; <NIg`B@'s  
/ 7EeM{,~  
import org.rut.util.algorithm.SortUtil; o6H\JCne  
c5>'1L  
/** iSm5k:7  
* @author treeroot F vJJpPS  
* @since 2006-2-2 $!+t2P@d.5  
* @version 1.0 6mawcK:7  
*/ qDOJ;> I  
public class MergeSort implements SortUtil.Sort{ )gO=5_^u*o  
>a5M:s)  
/* (non-Javadoc) >e]46 K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iQrTEp  
*/ r_sZw@lqJ  
public void sort(int[] data) { a@1 r3az  
int[] temp=new int[data.length]; qr5ME/)z  
mergeSort(data,temp,0,data.length-1); h q5=>p  
} pq \M;&  
/0w?"2-  
private void mergeSort(int[] data,int[] temp,int l,int r){ fz)i9D@  
int mid=(l+r)/2;  Bld%d:i  
if(l==r) return ; b4_"dg~gK  
mergeSort(data,temp,l,mid); <Pg]V:=g'  
mergeSort(data,temp,mid+1,r); \ 2Jr( ?U  
for(int i=l;i<=r;i++){  (h"Yw  
temp=data; oXCZpS  
} EYwDv4H,g  
int i1=l; %-zAV*>  
int i2=mid+1; 8vN}v3HV&  
for(int cur=l;cur<=r;cur++){ fO!S^<9,-  
if(i1==mid+1) T<p,KqH  
data[cur]=temp[i2++]; B{ i5UhxD  
else if(i2>r) W]8tp@  
data[cur]=temp[i1++]; Dxc`K?M   
else if(temp[i1] data[cur]=temp[i1++]; S-FoyID\H  
else \O]1QM94Y  
data[cur]=temp[i2++]; <K8$00lm  
} ` ,B&oV>  
} e/;1<5tfj  
4o:  
} ^1&xt(G  
8}Pd- .se  
改进后的归并排序: $,vZX u|Qw  
{H$F!}a  
package org.rut.util.algorithm.support; !fFmQ\|)4S  
#}^ kMD >  
import org.rut.util.algorithm.SortUtil; Y(>]7  
{.W$<y (j7  
/** e`1,jt'  
* @author treeroot -j%!p^2j9  
* @since 2006-2-2 _IAvFJI  
* @version 1.0 S9sFC!s1g  
*/ R5QSf+/T4  
public class ImprovedMergeSort implements SortUtil.Sort { l8n}&zX  
u8Ul +u  
private static final int THRESHOLD = 10; |?c v5l7E  
|TOz{  
/* $qN+BKd]3  
* (non-Javadoc) cJ 5":^O  
* i!/V wGg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C[j'0@~V:B  
*/  T)o)%Yv  
public void sort(int[] data) { `jR= X  
int[] temp=new int[data.length]; @Q"%a`mKH  
mergeSort(data,temp,0,data.length-1); &hmyfH&S  
} c;,jb  
(7nWv43  
private void mergeSort(int[] data, int[] temp, int l, int r) { &A=q_  
int i, j, k; _ ?f~UvK  
int mid = (l + r) / 2; U!@3['  
if (l == r) _7SOl.5ZE  
return; 6gS<h \h0  
if ((mid - l) >= THRESHOLD) )J/,-p  
mergeSort(data, temp, l, mid); s[:e '#^  
else Sr_]R<?  
insertSort(data, l, mid - l + 1); dQ*3s>B[  
if ((r - mid) > THRESHOLD) whW"cFg  
mergeSort(data, temp, mid + 1, r); f"h{se8C  
else a;p3Me7  
insertSort(data, mid + 1, r - mid); LC5NB{b\%>  
f\ oB/  
for (i = l; i <= mid; i++) { A"S{W^iL  
temp = data; %YhZ#>WT  
} w < p  
for (j = 1; j <= r - mid; j++) { &6/# O  
temp[r - j + 1] = data[j + mid]; xz dqE  
} NQq$0<7.=W  
int a = temp[l]; GXC:~$N  
int b = temp[r]; zJ42%0g  
for (i = l, j = r, k = l; k <= r; k++) { JLT ^0wBB  
if (a < b) { C& 0iWY\a  
data[k] = temp[i++]; /nEh,<Y)  
a = temp; E K ks8  
} else { [wAI;=.  
data[k] = temp[j--]; ,HXY|fYr  
b = temp[j]; TY"=8}X1  
} 6xSdA;<+]  
} wU_e/+0h  
} Q7`}4c)  
qw[)$icP  
/** [Q,E( s  
* @param data hV_eb6aj}P  
* @param l #$(F&>pj  
* @param i ^{8r(1,  
*/ ?6B n&qa  
private void insertSort(int[] data, int start, int len) { ' }rUbJo  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8D eRs#  
} z65|NO6JW.  
} SP9_s7LL  
} xW*L^97 ;  
} >\hu1C|W  
W:{1R&$l  
堆排序: = >)S\Dfi  
a4FvQH#j  
package org.rut.util.algorithm.support; heiIb|z  
.63:G<  
import org.rut.util.algorithm.SortUtil; 5haJPWG|'  
xMDx<sk  
/** 8$<jd^w  
* @author treeroot fU_itb(  
* @since 2006-2-2 [QA@XBy6  
* @version 1.0 0qSd #jO  
*/ AE1!u{  
public class HeapSort implements SortUtil.Sort{ y5>859"h  
U3MfEM!x  
/* (non-Javadoc) :(,uaX> {  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ny17(Y =  
*/ xd\k;nq  
public void sort(int[] data) { w> `3{MTQ  
MaxHeap h=new MaxHeap(); j{EN %  
h.init(data); vINm2%*zJ  
for(int i=0;i h.remove(); $trvNbco  
System.arraycopy(h.queue,1,data,0,data.length); ]ERPWW;^  
} Ia:n<sZU  
1]#qxjZ~  
private static class MaxHeap{ [;II2[5 ,  
]V J$;v'{[  
void init(int[] data){ 3dNOXk, #  
this.queue=new int[data.length+1]; 9RwD_`D(MN  
for(int i=0;i queue[++size]=data; HF}%Ow  
fixUp(size); } pE<P;\]k  
} #/t^?$8\\  
} T1?fC)  
s=Pwkte  
private int size=0; $-Q,@Bztq  
 q%,q"WU  
private int[] queue; 0EfM~u  
,g%2-#L%  
public int get() { {E!ie{~  
return queue[1]; r6&f I"Yg  
} QbqEe/*$_  
}X94M7+->  
public void remove() {  49&p~g  
SortUtil.swap(queue,1,size--); : 'M$:ZJ  
fixDown(1); QkUq%}_0  
} FR _R"p  
file://fixdown =ZjF5,@  
private void fixDown(int k) { x3O$eKy\|5  
int j; @U'I_` LL  
while ((j = k << 1) <= size) { DSad[>Uj],  
if (j < size %26amp;%26amp; queue[j] j++; W4Nbl  
if (queue[k]>queue[j]) file://不用交换 #+V-65v  
break; <SmXMruU  
SortUtil.swap(queue,j,k); mR:G,XytxM  
k = j; ECqcK~h#E  
} Y!* \=h6h  
} B!H4 6w~  
private void fixUp(int k) { A~&Tp  
while (k > 1) { sG*1?  
int j = k >> 1; 6j@3C`Yd  
if (queue[j]>queue[k]) "P`V|g  
break; F)g.CDQ!c  
SortUtil.swap(queue,j,k); 4- z3+e  
k = j; `|e?91@vEa  
} wMNtN3   
} 6"C$]kF?  
f.cIhZF  
} 4Mi~eL%D (  
OoTMvZP[  
} vBAds  
7H~StdL/>  
SortUtil: zz3Rld!b[  
_3-nw  
package org.rut.util.algorithm; V6Ie\+@.\  
U`sybtuBP'  
import org.rut.util.algorithm.support.BubbleSort; VU`aH9g3(  
import org.rut.util.algorithm.support.HeapSort; ykc$B5*  
import org.rut.util.algorithm.support.ImprovedMergeSort; tK{2'e6x  
import org.rut.util.algorithm.support.ImprovedQuickSort; !7t,(Id8  
import org.rut.util.algorithm.support.InsertSort; ]}H;`H  
import org.rut.util.algorithm.support.MergeSort; 4.2qt  
import org.rut.util.algorithm.support.QuickSort; <<!XWV*m  
import org.rut.util.algorithm.support.SelectionSort; pJ-/"Q|:i  
import org.rut.util.algorithm.support.ShellSort; z(L\I  
[3h~y7  
/** &(3kwdI  
* @author treeroot }6b=2Z}  
* @since 2006-2-2 1wSJw  
* @version 1.0 /M(FuV  
*/ :{?8rA5  
public class SortUtil { C5m6{Oo+-  
public final static int INSERT = 1; v8p-<N)  
public final static int BUBBLE = 2; CJ0j2e/  
public final static int SELECTION = 3; ujsJ;\c  
public final static int SHELL = 4; '|Dm\cy  
public final static int QUICK = 5; VXlTA>a }  
public final static int IMPROVED_QUICK = 6; bSsX)wHm  
public final static int MERGE = 7; ]@_M)[ x  
public final static int IMPROVED_MERGE = 8; A$ v Cm  
public final static int HEAP = 9; z%5i^P  
"&Ym(P  
public static void sort(int[] data) { }8J77[>/  
sort(data, IMPROVED_QUICK); T ) T0.c  
} ?-[.H^]s~  
private static String[] name={ 'eg?W_zu  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &g;4;)p*8  
}; 9^l_\:4  
8 &:  *<  
private static Sort[] impl=new Sort[]{ bv ,_7UOG  
new InsertSort(), ?<VahDBS+A  
new BubbleSort(), f@Mm{3&.  
new SelectionSort(), V4'G%!NY  
new ShellSort(), ,y@` =  
new QuickSort(), aGvD  
new ImprovedQuickSort(), TWE$@/9)g  
new MergeSort(), C^I  h"S  
new ImprovedMergeSort(), ciO^2X  
new HeapSort() } XVz?6  
}; "J^M@k\!  
h 3Kv0^{  
public static String toString(int algorithm){ r!+-"hS!  
return name[algorithm-1]; `r;e\Cp  
} HI6;=~[  
Q|Uq.UjY  
public static void sort(int[] data, int algorithm) { Q| > \{M  
impl[algorithm-1].sort(data); Wo=Q7~  
} Rr+Y::E  
KY$6=/?U_  
public static interface Sort { mwLp~z%OX  
public void sort(int[] data); 99 /fI  
} ?r C^@)  
jz(}P8  
public static void swap(int[] data, int i, int j) { NMb`d0;(  
int temp = data; -:wC 920+  
data = data[j]; E`%Ewt$Z  
data[j] = temp; '}h[*IB}5  
} ~$ } `R=  
} /Y|oDfv  
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