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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。 [Y$ TVwFwX  
插入排序: '!ks $}$`h  
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package org.rut.util.algorithm.support; ,[T/O\k  
O) TS$  
import org.rut.util.algorithm.SortUtil; p!8phS#iP  
/** gwsIzYV  
* @author treeroot !zm;C@}ln  
* @since 2006-2-2 {;E6jw@  
* @version 1.0 ^<qi&*  
*/ \ {]y(GT  
public class InsertSort implements SortUtil.Sort{ ^a`3)WBv8  
mhX66R  
/* (non-Javadoc) SE43C %hv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SASLeGaV  
*/ oPF]]Imu  
public void sort(int[] data) { gC7Po  
int temp; `'^o45  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a;^lOU|L{  
} ;9WUt,R  
} G'p322Bu  
} ^e <E/j{~  
+&S6se4  
} @MB)B5  
5-$D<}Z  
冒泡排序: }% q-9  
5O d]rE  
package org.rut.util.algorithm.support; OA=~ i/n~  
wBwTJCX  
import org.rut.util.algorithm.SortUtil; !`RMXUV  
NN=^4Xpc:  
/** K0_gMi+bR  
* @author treeroot W+63B8)4  
* @since 2006-2-2 Hnk&2bY  
* @version 1.0 }zf!mlk  
*/ G%: 3.:E"  
public class BubbleSort implements SortUtil.Sort{ :>;F4gGVG  
E/a2b(,Tg  
/* (non-Javadoc) xQDQgvwa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *9$SFe|&n:  
*/ wiZ  
public void sort(int[] data) { P "IR3=  
int temp; ;aW k-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Vc;[0iB  
if(data[j] SortUtil.swap(data,j,j-1); ltDohm?  
} ^}p##7t [  
} w6cl3J&  
} c+e?xXCEAz  
} znTi_S  
eBnx$  
} 8$A0q%n  
9l &q}  
选择排序: Zs=A<[  
th[v"qD9G  
package org.rut.util.algorithm.support; 'xj5R=V  
A2:}bb~H  
import org.rut.util.algorithm.SortUtil; g ,EDE6`8  
"4H@&:-(p  
/** {FI*oO1A~  
* @author treeroot @QVg5  
* @since 2006-2-2 rf%lhBv  
* @version 1.0 Rh|9F yN  
*/ C'|9nK$%  
public class SelectionSort implements SortUtil.Sort { -Q@f),  
i$<['DY  
/* 5X)M)"rq;V  
* (non-Javadoc) J'|=J   
*  jb&MC 2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y< *-&  
*/ v { >3)$1  
public void sort(int[] data) { JOY&YA$U  
int temp; U?:P7YWy  
for (int i = 0; i < data.length; i++) { ^ZQMRNP{r  
int lowIndex = i; *}lLV.+A  
for (int j = data.length - 1; j > i; j--) { "Mj#P9  
if (data[j] < data[lowIndex]) { Ge-Bk)6  
lowIndex = j; !Z:XSF[T  
} ^wd@mWxx  
} Lo!hyQ)  
SortUtil.swap(data,i,lowIndex); zT78FliY6  
} 3;BIwb_  
} =;uMrb4  
N~8H\  
} }-Mg&~e`  
8.B'O>\T  
Shell排序: }^Q:Q\  
Mt-r`W3 q  
package org.rut.util.algorithm.support; `_OrBu[  
8A3/@Z;0S  
import org.rut.util.algorithm.SortUtil; ^BA%]pe$I  
`/>kN%  
/** Dc-K08c  
* @author treeroot .5G`Y  
* @since 2006-2-2 jjj<B'zt  
* @version 1.0 T3z ovnR  
*/ ]5f;Kz)  
public class ShellSort implements SortUtil.Sort{ {V QGfN  
OLb s~ >VA  
/* (non-Javadoc) ?yef?JI$p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6[A\cs  
*/ mEd2f^R  
public void sort(int[] data) { 8eS(gKD  
for(int i=data.length/2;i>2;i/=2){ /o;L,mcx*  
for(int j=0;j insertSort(data,j,i); W"vLCHTh  
} tjx8 UgSi  
} G9Uc }z  
insertSort(data,0,1); Z\CvaX  
} Ie. on)  
.u&xo{$'dS  
/** (O0Ry2u k  
* @param data r$={_M$  
* @param j JFm@jc  
* @param i e`qrafa  
*/ V'XEz;Ze  
private void insertSort(int[] data, int start, int inc) { Qi`3$<W>  
int temp; "frZ%mv  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bzNnEH`^]  
} ?`U_|Yo  
} /fp8tL2Y  
} 3E|||3rf  
jDY B*Y^F  
}  Ol }5ry  
-`k>(\Q< d  
快速排序:  9Bt GzI\  
b}R_@_<u  
package org.rut.util.algorithm.support; TI7$J#  
X#&5?oq`  
import org.rut.util.algorithm.SortUtil; A{zqr^/h  
N 3L$"g5^  
/** PF`uwx@zH  
* @author treeroot AfTm#-R  
* @since 2006-2-2 .A< HM}   
* @version 1.0 Og7yT{h_  
*/ IEy$2f>Ns  
public class QuickSort implements SortUtil.Sort{ YP02/*'  
aA|{r/.10K  
/* (non-Javadoc) %[p*6&V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `}),wBq  
*/ })-V,\  
public void sort(int[] data) { 1YV1 Xnn,  
quickSort(data,0,data.length-1); Zmyq6.1q~  
} kS-BB[T  
private void quickSort(int[] data,int i,int j){ I_ZJnu<  
int pivotIndex=(i+j)/2; .Od:#(aq  
file://swap :b44LXKCP  
SortUtil.swap(data,pivotIndex,j); ]%6%rq%9C  
x *I'Ar  
int k=partition(data,i-1,j,data[j]); 0(y*EJA$  
SortUtil.swap(data,k,j); U7x  
if((k-i)>1) quickSort(data,i,k-1); 3HrG^/  
if((j-k)>1) quickSort(data,k+1,j); 7p.8{zQ*  
}U_^zQfaj  
} 7#E/Q~]'6  
/** u;q Q/Ftb  
* @param data B46:LQ9[  
* @param i n>v1<^  
* @param j 2.Vrh@FNRo  
* @return bPOPoq1#  
*/ e#;43=/Ia  
private int partition(int[] data, int l, int r,int pivot) { }h;Z_XF&  
do{ G!I++M"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {A0F/#M]  
SortUtil.swap(data,l,r); %Y ZC dS  
} fxcE1=a  
while(l SortUtil.swap(data,l,r); FvT4?7-  
return l; *1dZs~_  
} W8g13oAu"  
}'P|A  
} SSF:PTeG>  
i`sZP#h  
改进后的快速排序: MM32\}Y6  
:5~Dca_iU4  
package org.rut.util.algorithm.support; UmVn:a  
<9pI~\@w  
import org.rut.util.algorithm.SortUtil; IE\RP!  
g4WmUV#wp  
/** D=a*Xu2zq  
* @author treeroot l\{Qnb(  
* @since 2006-2-2 )W\ )kDh!  
* @version 1.0 wnX;eU/n  
*/ O<s7VHj  
public class ImprovedQuickSort implements SortUtil.Sort { . \a+m  
]x metv|7  
private static int MAX_STACK_SIZE=4096; Ms6 ;iW9  
private static int THRESHOLD=10; pA.orx  
/* (non-Javadoc) i<Ms2^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !hQ-i3?qm  
*/  GhfhR^P  
public void sort(int[] data) { eW8cI)wU  
int[] stack=new int[MAX_STACK_SIZE]; !b`fykC  
^ZsIQ4@`  
int top=-1; F[\T'{  
int pivot; t_Eivm-,B  
int pivotIndex,l,r; C,W@C  
c:K/0zY  
stack[++top]=0; OG<*&V  
stack[++top]=data.length-1; DL,R~  
$HQ~I?r{Hf  
while(top>0){ Q I";[  
int j=stack[top--]; bnfeZR1m_  
int i=stack[top--]; : _Y^o  
\xS X'/G  
pivotIndex=(i+j)/2; _(f@b1O~  
pivot=data[pivotIndex]; c(hC'Cp  
n/;{-  
SortUtil.swap(data,pivotIndex,j); 7{U[cG+a#  
4}N+o+  
file://partition &pI\VIx ?  
l=i-1; 9mvy+XD  
r=j; jW#dUKS(  
do{ uO1^Q;F  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Tr;.%/4Q  
SortUtil.swap(data,l,r); "-S!^h/v  
} M %zf?>])  
while(l SortUtil.swap(data,l,r); +iN!$zF5]  
SortUtil.swap(data,l,j); x}a?B  
)b nGZ8h99  
if((l-i)>THRESHOLD){ \Nik`v*Pd  
stack[++top]=i; ;fqp!|J  
stack[++top]=l-1; LF.i0^#J  
} g[i;>XyP  
if((j-l)>THRESHOLD){ D7pQWlN\  
stack[++top]=l+1; Y_*KAr'{P  
stack[++top]=j; 6 T4"m  
} 'dwsm7Xd  
; ]% fFcy  
} 9*iVv)jd  
file://new InsertSort().sort(data); 1N _"Mm{  
insertSort(data); .n IGs'P  
} Q']'KU.  
/** E7h@c>IK  
* @param data 0*:n<T9  
*/ h(q4 B~  
private void insertSort(int[] data) { lg-`zV3  
int temp; (1S9+H>g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =4q5KI  
} L`M{bRl+1  
} !(bYh`Uy  
} ui8$F "I*  
;Uch  
} C,;<SV2#  
>7a ENKOg:  
归并排序: fPN/Mxu  
r|Uz?  
package org.rut.util.algorithm.support; G{.=27  
7oLlRU  
import org.rut.util.algorithm.SortUtil; <2j$P Y9  
KX x+J}n  
/** 8u[.s`^  
* @author treeroot 71Q`B#t0'Z  
* @since 2006-2-2 mn1!A`$  
* @version 1.0 :F5(]g 7  
*/ 6R m dt  
public class MergeSort implements SortUtil.Sort{ fC^d@4ha  
>.39OQ#  
/* (non-Javadoc) \zcSfNE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "j`T'%EV  
*/ fc:87ZR{K  
public void sort(int[] data) { ;N!n06S3  
int[] temp=new int[data.length]; rfdA?X{Q0  
mergeSort(data,temp,0,data.length-1); `o_i+?E  
} i]zh8|">  
g0~m[[  
private void mergeSort(int[] data,int[] temp,int l,int r){ +Rd\*b  
int mid=(l+r)/2; RU.j[8N$  
if(l==r) return ; LCRWC`%&  
mergeSort(data,temp,l,mid); hBZh0x y  
mergeSort(data,temp,mid+1,r); :n <l0  
for(int i=l;i<=r;i++){ d?U,}tv  
temp=data; fX:G;vYn  
} QncjSaEE  
int i1=l; S% ptG$Z  
int i2=mid+1; Y,n8co^  
for(int cur=l;cur<=r;cur++){ N+R{&v7=F%  
if(i1==mid+1) lh0G/8+C  
data[cur]=temp[i2++]; #I ,c'Vj  
else if(i2>r) brE%/%! e  
data[cur]=temp[i1++]; !`U #Pjp.  
else if(temp[i1] data[cur]=temp[i1++]; KPK`C0mg@k  
else ,iiI5FR  
data[cur]=temp[i2++]; %RIu'JXi  
} ctb , w  
} pdQaVe7tRo  
M(^IRI-  
} qsN}KgTjg  
1:h(8%H@"  
改进后的归并排序: ,^iT,MgNNf  
99zMdo S  
package org.rut.util.algorithm.support; ('_S1?y  
MmfshnTN  
import org.rut.util.algorithm.SortUtil; ;h~kB  
|c]L]PU  
/** UA0R)BH'  
* @author treeroot y(Pv1=e  
* @since 2006-2-2 z1e+Ob&  
* @version 1.0  Mv%B#J  
*/ A[88IMZs  
public class ImprovedMergeSort implements SortUtil.Sort { GO#eI]>/r  
g[{rX4~|  
private static final int THRESHOLD = 10; ,;= S\  
iQh:y:Jo1&  
/* p{V(! v|  
* (non-Javadoc) sYTToanA$?  
* R'1"`@f G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^> d"D  
*/ ]_ y;Igaj  
public void sort(int[] data) { Q|Pm8{8  
int[] temp=new int[data.length]; wzI*QXV2s  
mergeSort(data,temp,0,data.length-1); /X\:3P  
} e+MsFXnB8  
'(:R-u!pp  
private void mergeSort(int[] data, int[] temp, int l, int r) { j;rxr1+w  
int i, j, k; z\IZ5'  
int mid = (l + r) / 2; ,+_gx.H2j  
if (l == r) >&qaT*_g  
return; 3A b_Z  
if ((mid - l) >= THRESHOLD) :rmi8!o  
mergeSort(data, temp, l, mid); 0pe*DbYP5  
else 3t] 0  
insertSort(data, l, mid - l + 1); SMm$4h R  
if ((r - mid) > THRESHOLD) 3V/|"R2s  
mergeSort(data, temp, mid + 1, r); y*sqnzgF  
else OdJ=4 x>  
insertSort(data, mid + 1, r - mid); DV bY   
,Hc,]TPC4  
for (i = l; i <= mid; i++) { ?7*J4.  
temp = data; -uK@2} NZ  
} u bi6=  
for (j = 1; j <= r - mid; j++) { C Yk"  
temp[r - j + 1] = data[j + mid]; ?rwHkPJ{*  
} H!g9~a  
int a = temp[l]; 4kLTKm:G  
int b = temp[r]; %t-}dC&  
for (i = l, j = r, k = l; k <= r; k++) { ]O M?e  
if (a < b) { 8g 2'[ci$q  
data[k] = temp[i++]; E+aE5wmr  
a = temp; Luh*+l-nO  
} else { y=WCR*N  
data[k] = temp[j--]; p["20 ?^  
b = temp[j]; B\7 80p<  
} t4,(W`  
} FE?^}VH  
} k$K>ml/h  
O$& 4{h`  
/** k{C|{m  
* @param data )0@&pEObm  
* @param l w3oe.hWP3N  
* @param i 9O#?r82  
*/ R 9Y k9v  
private void insertSort(int[] data, int start, int len) { jowR!rqf  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); & MfnH  
} P0szY"}  
} ;ZLfb n3\  
} Js8d{\0\  
} T ;JA.=I  
,Z]4`9c  
堆排序: 4}=Z+tDu>  
d[Rs  
package org.rut.util.algorithm.support; h`p9H2}0  
GI*2*m!u  
import org.rut.util.algorithm.SortUtil; h]okY49hY  
 *}`D2_uP  
/** TYr"yZ([  
* @author treeroot fyt`$y_E[  
* @since 2006-2-2 V\><6v  
* @version 1.0 EPwM+#|e-  
*/ B6a   
public class HeapSort implements SortUtil.Sort{ ~Aq$GH4  
%L;'C v  
/* (non-Javadoc) +LAjh)m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l ilF _ y  
*/ XB-l[4?  
public void sort(int[] data) { _:,U$W  
MaxHeap h=new MaxHeap(); H;eOrX {GT  
h.init(data); f0lK ,U@P  
for(int i=0;i h.remove(); ns[Q %_  
System.arraycopy(h.queue,1,data,0,data.length); W_N!f=HW  
} 4wQ>HrS)(  
oT27BK26?h  
private static class MaxHeap{ p=U5qM.O  
:Qra9; Y  
void init(int[] data){ `]:&h'  
this.queue=new int[data.length+1]; vErlh:~e  
for(int i=0;i queue[++size]=data; #EdsB  
fixUp(size); wNm~H  
} T8rf+B/.L  
} g{06d~Y  
cH%#qE3  
private int size=0; b:}+l;e5 2  
\a\ApD  
private int[] queue; JmK[7t  
BPzlt  
public int get() { -%x9^oQwY  
return queue[1]; |CFTOe\ q  
} (*2kM|  
UN*XLHio  
public void remove() { #r_&Q`!eU  
SortUtil.swap(queue,1,size--); #<|q4a{8  
fixDown(1); D#,P-0+%  
} HJu;4O($  
file://fixdown wm r8[n&c  
private void fixDown(int k) { ^yB>0/{)z  
int j; U$(AZ|0  
while ((j = k << 1) <= size) { (GdL(H#IL  
if (j < size %26amp;%26amp; queue[j] j++; e7.!=R{6  
if (queue[k]>queue[j]) file://不用交换 ;MR(Eaep  
break; ~?)ST?&  
SortUtil.swap(queue,j,k); mT2Fn8yC1  
k = j; PjkJsH  
} c}>p"  
} "~lGSWcU  
private void fixUp(int k) { p$cSES>r:  
while (k > 1) { qrmJJSJ  
int j = k >> 1; b 64~Y|8  
if (queue[j]>queue[k]) -Fj:^q:@u  
break; =,=tSp  
SortUtil.swap(queue,j,k); y$e'-v  
k = j; a~F` {(Q2  
} t~0}Emgp<(  
} jreY'y:  
e/<Og\}P/  
} ~^Y(f'{  
U\A*${  
} -IB~lw  
$fE$j {  
SortUtil: b}[W[J}`  
vK?{Z^J][  
package org.rut.util.algorithm; 'J`%[,@V  
`_;VD?")*l  
import org.rut.util.algorithm.support.BubbleSort; *?`:=  
import org.rut.util.algorithm.support.HeapSort; G*|2qX"o  
import org.rut.util.algorithm.support.ImprovedMergeSort; ? N|B,F  
import org.rut.util.algorithm.support.ImprovedQuickSort; i }5 #n  
import org.rut.util.algorithm.support.InsertSort; m{bw(+r  
import org.rut.util.algorithm.support.MergeSort; >#RXYDd  
import org.rut.util.algorithm.support.QuickSort; g[P8  
import org.rut.util.algorithm.support.SelectionSort; (Js'(tBhiU  
import org.rut.util.algorithm.support.ShellSort; h.6yI  
WlnI`!)d  
/** *zy0,{bl  
* @author treeroot dB`YvKr#  
* @since 2006-2-2 P==rY5+s`  
* @version 1.0 gn? ~y`  
*/ UEJX0=  
public class SortUtil { }>w;(R  
public final static int INSERT = 1; 'lU9*e9  
public final static int BUBBLE = 2; @,-xaZ[  
public final static int SELECTION = 3; j_?U6$xi  
public final static int SHELL = 4; uL!{xuN  
public final static int QUICK = 5; hNV" {V3`{  
public final static int IMPROVED_QUICK = 6; .jh uC#x{/  
public final static int MERGE = 7; Xa2QtJq  
public final static int IMPROVED_MERGE = 8; (l.`g@(L  
public final static int HEAP = 9; 5 s>$  
zX!zG<<K  
public static void sort(int[] data) { A}b<Lg  
sort(data, IMPROVED_QUICK); X }yEMe{T  
} XY5I5H_U  
private static String[] name={ J0}OmNTzD  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" j`\}xDg  
}; 1@H3!V4  
1e;^Mz B"  
private static Sort[] impl=new Sort[]{ -, ~n|ceI  
new InsertSort(), (d[)U<  
new BubbleSort(), ^z$-NSlI  
new SelectionSort(), MS6^= ["  
new ShellSort(), {O6f1LuH  
new QuickSort(), oU m"qt_  
new ImprovedQuickSort(), WZ'3  
new MergeSort(), $+sNjwv^F  
new ImprovedMergeSort(), N"b>]Ab] ;  
new HeapSort() `?Wak =]g  
}; NwmO[pt+  
gU Cv#:  
public static String toString(int algorithm){ ,c6ID|\  
return name[algorithm-1]; <BQ4x.[  
} 6ZVJ2xs[%  
!9i,V{$c`"  
public static void sort(int[] data, int algorithm) { :<s)QD  
impl[algorithm-1].sort(data); -O_5OT4  
} ">kf X1LT  
[t /hjm"$  
public static interface Sort { lhx6+w  
public void sort(int[] data); +"a . ,-f!  
} ~) }npS;  
D:llGdU#2  
public static void swap(int[] data, int i, int j) { j]6j!.1  
int temp = data; ocy fU=}X  
data = data[j]; X LPO_ tD  
data[j] = temp; "!gd)^<e  
} L&lNpMT  
} `I<*R0Qe  
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