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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。 ]wa?~;1^&  
插入排序: Jev@IORN\  
go2:D#mf  
package org.rut.util.algorithm.support; 0 "pm7  
b0LQ$XM>8  
import org.rut.util.algorithm.SortUtil; aKH\8O4L5  
/**  A{5 k}  
* @author treeroot Ha)w*1&w"  
* @since 2006-2-2 |;rjr_I  
* @version 1.0 $Xz9xzOR  
*/ kc~Z1  
public class InsertSort implements SortUtil.Sort{ !p&M,6  
%tUJ >qYU  
/* (non-Javadoc) k[Uc _=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ik;~u8j1e  
*/ ,D ;`t  
public void sort(int[] data) { Pm+H!x,  
int temp; JsfbY^wz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H -.3r  
}  A3'i -  
} qhF/iUE  
} Om>6<3n  
JWMIZ{/M  
} kwGj 7'  
)F4er '  
冒泡排序: .t"s>jq 1  
'cH),~ z  
package org.rut.util.algorithm.support; vx!nC}f"k`  
&z1r$X.AW  
import org.rut.util.algorithm.SortUtil; !c(B^E  
7:M%w'oR  
/** qx0J}6+NlU  
* @author treeroot 0Lc X7gU>  
* @since 2006-2-2 kz,Nz09}W  
* @version 1.0 Ms^Y:,;Hi  
*/ .o|Gk 5)  
public class BubbleSort implements SortUtil.Sort{  9l{r&]  
Am  kHVg  
/* (non-Javadoc) C/!2q$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]>R`]U9*O  
*/ ^!pagt^  
public void sort(int[] data) { _6=6 b!hD  
int temp; .%WbXs  
for(int i=0;i for(int j=data.length-1;j>i;j--){ x0Tb7y`  
if(data[j] SortUtil.swap(data,j,j-1); iKp4@6an  
} Pb]s+1  
} ;K$E;ZhPN  
} ]0m4esK`  
} PJA 1/"  
.O1g'%  
} 8{Zgvqbb  
Q*mPU=<  
选择排序: [R A=M  
!i)?j@D  
package org.rut.util.algorithm.support; %0:  (''  
4~G9._  
import org.rut.util.algorithm.SortUtil; Z"e|DP`  
>-y'N.l^  
/** ) I-8 .  
* @author treeroot .]v8W51Y  
* @since 2006-2-2 lpSM p  
* @version 1.0 oxcAKo  
*/ J]N-^ld\\  
public class SelectionSort implements SortUtil.Sort { ^BNg^V.  
.f(x9|K^  
/* ] MUuz'<  
* (non-Javadoc) Eg  w?  
* 9-bDgzk   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H~||]_q|  
*/ [0MVsc=  
public void sort(int[] data) { Ae`K 9  
int temp; $qIMYX  
for (int i = 0; i < data.length; i++) { evimnV  
int lowIndex = i; p@r~L(>+3  
for (int j = data.length - 1; j > i; j--) { ZL1[Khr,s  
if (data[j] < data[lowIndex]) { mI"|^!L  
lowIndex = j; ~5cLI;4h  
} v C><N  
} lv$tp,+  
SortUtil.swap(data,i,lowIndex); G+\2Aj  
} :j?Lil%R  
} HlI*an  
c1MALgK~}\  
} RE *UIh*O  
9O@ eJ$  
Shell排序: O]^E%;(]}i  
(hd2&mSy  
package org.rut.util.algorithm.support; QabF(}61  
K-p1v!IC  
import org.rut.util.algorithm.SortUtil; bS* "C,b~s  
K[T? --H  
/** 5;dnxhf  
* @author treeroot l4r09"S|V  
* @since 2006-2-2 uv9cOd  
* @version 1.0 SB eb}LZ  
*/ 8LR_K]\  
public class ShellSort implements SortUtil.Sort{ Qy@chN{eP  
AX]lMe  
/* (non-Javadoc) wm8(Ju  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P" 3{s+ r  
*/ <A"}Krq?  
public void sort(int[] data) { nuKjp Ap!  
for(int i=data.length/2;i>2;i/=2){  b.C!4^  
for(int j=0;j insertSort(data,j,i); ;uDH&3W  
} }v@w(*)h:  
} #,!.e  
insertSort(data,0,1); (B,CL222x  
} hua{g_  
;'R{b$B;|  
/** u]"oGJj1  
* @param data FS`{3d2K +  
* @param j {T m-X`  
* @param i g4I(uEJk  
*/ *Pw; ;#\B  
private void insertSort(int[] data, int start, int inc) { ,Qj7wFZ  
int temp; !:rQ@PSy9  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8n);NZ  
} IY,&/MCh  
} *>S\i7RET  
} Td"f(&Hk&  
oDM}h +  
} <P}{0Y~@*W  
>RF[0s'-  
快速排序: $S=lm {  
[T~O%ly7x&  
package org.rut.util.algorithm.support; 2x3&o|J  
p# O%<S@?  
import org.rut.util.algorithm.SortUtil; H4^-MSw  
X^fMt]  
/** }MXZ  
* @author treeroot yv4hH4Io  
* @since 2006-2-2 (K^9$w]tf  
* @version 1.0 VEo>uR  
*/ R}>Gk  
public class QuickSort implements SortUtil.Sort{ BE}lzn=sF  
uK}k]x\z  
/* (non-Javadoc) duT2:~H2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !t~S.`vF  
*/ 3vNoD  
public void sort(int[] data) { |2{y'?,  
quickSort(data,0,data.length-1); Mq6.!j  
} .CrahV1G  
private void quickSort(int[] data,int i,int j){ :m^eNS6:  
int pivotIndex=(i+j)/2; C!RxMccTh  
file://swap GwW!Q|tVz=  
SortUtil.swap(data,pivotIndex,j); im4V6 f;%  
YX!%R]c%  
int k=partition(data,i-1,j,data[j]); Aw9^}k}UfD  
SortUtil.swap(data,k,j); jyLpe2 S  
if((k-i)>1) quickSort(data,i,k-1); r`B8Cik  
if((j-k)>1) quickSort(data,k+1,j); Vk@u|6U'  
rc 9 \  
} 8Z FPs/HP  
/** /Q})%j1S0  
* @param data O2ety2}?f  
* @param i 4N*Fq!k~  
* @param j yxLGseD  
* @return osPX%k!yw  
*/ Xk(c2s&  
private int partition(int[] data, int l, int r,int pivot) { q ( H^H  
do{ 9'td}S  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &hyr""NkAm  
SortUtil.swap(data,l,r); Y -o*d@  
} m:II<tv  
while(l SortUtil.swap(data,l,r); 5JIa?i>B  
return l; pbR84g^p.S  
} $PHKI B(  
Y@_ i32,r  
}  4\dc  
{C|#<}1  
改进后的快速排序: ZMy7z|  
z Sj.Y{J  
package org.rut.util.algorithm.support; nWmc  
tjuW+5O  
import org.rut.util.algorithm.SortUtil; !$qNugLg  
@H1pPr  
/** jYO@ %bQ  
* @author treeroot o @~XX@5l  
* @since 2006-2-2 I zM=?,`  
* @version 1.0 1LT)%_d@  
*/ tiI>iP`!  
public class ImprovedQuickSort implements SortUtil.Sort { FzA_-d/_dg  
<y(>z*T;  
private static int MAX_STACK_SIZE=4096; (#X/sZQh  
private static int THRESHOLD=10; X -w#E3  
/* (non-Javadoc) \SA5@.W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :7@"EW  
*/ OZQhT)nS]  
public void sort(int[] data) { 9@:H9" w  
int[] stack=new int[MAX_STACK_SIZE]; =36vsps=  
| z$ba:u5  
int top=-1; 9%> H}7=  
int pivot; &}YB!6k h^  
int pivotIndex,l,r; )=[K$>0k  
(s,Nq~O  
stack[++top]=0; bx!Sy0PUJ  
stack[++top]=data.length-1;  ZRsDn  
$9M>B<]  
while(top>0){ 8/ZJkI  
int j=stack[top--]; leg@ia  
int i=stack[top--]; TW:vL~L  
k2,n:7  
pivotIndex=(i+j)/2; V.: a6>]  
pivot=data[pivotIndex]; B`iQN7fd  
%n=!H  
SortUtil.swap(data,pivotIndex,j); U$ _?T-x  
{~[H"h537t  
file://partition KFCuv15w,3  
l=i-1;  ORp6  
r=j; ZgZ}^x  
do{ .G?7t6A  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fn&gM\<-+(  
SortUtil.swap(data,l,r); 1;080| ,s  
} xXp\U'Ad~~  
while(l SortUtil.swap(data,l,r); * j:  
SortUtil.swap(data,l,j);  &5O  
Czid"Ih-  
if((l-i)>THRESHOLD){ T5Sa9\`>  
stack[++top]=i; [/6$P[  
stack[++top]=l-1; eP(%+[g  
} 'g|%Ro/  
if((j-l)>THRESHOLD){ gE`G3kgn{  
stack[++top]=l+1; i8Yl1nF  
stack[++top]=j; 7==Uz?}C  
} ipw_AC~  
tA3]6SIK@  
} 0$":W  
file://new InsertSort().sort(data); ](x4q  
insertSort(data); G5kM0vs6L  
} R^f~aLl  
/** nw Or  
* @param data |hiYV  
*/ +}I[l,,xy  
private void insertSort(int[] data) { h" P4  
int temp; ?G* XZ0u~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I&q:w\\z8|  
} *~lD;{2  
} ;]i&AAbj  
} RR75ke[Hs  
pIC CjA?3@  
} [j 'Ogm7"  
V%<<Udu<  
归并排序: fP&F$"o8  
d[kb]lC  
package org.rut.util.algorithm.support; *P61q\2Z  
i"F'n0*L  
import org.rut.util.algorithm.SortUtil; C ])Q#!D|  
e ! 6SJ7xC  
/** F,11 \j  
* @author treeroot tURIDj%#p  
* @since 2006-2-2 ( X)$8y  
* @version 1.0 mE}``  
*/ wI1[I  
public class MergeSort implements SortUtil.Sort{ {iYu x;(  
Y)hLu:P]  
/* (non-Javadoc) Q7N4@w;e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uQ vW@Tt  
*/ Gyjx:EM  
public void sort(int[] data) { 5l=B,%s  
int[] temp=new int[data.length]; pyT+ba#  
mergeSort(data,temp,0,data.length-1); Z, lUO.  
} ":Kn@S'{(  
}2:bYpYQ  
private void mergeSort(int[] data,int[] temp,int l,int r){ MN$j{+!Q  
int mid=(l+r)/2; ^;6~=@#*C  
if(l==r) return ; zt[TShD^  
mergeSort(data,temp,l,mid); 0 u,=OvU  
mergeSort(data,temp,mid+1,r); PJAE~|a  
for(int i=l;i<=r;i++){ j<szQ%tJlI  
temp=data; _>dqz(8#  
} >tr_Ypfv,c  
int i1=l; r{YyKSL1*K  
int i2=mid+1; ::j'+_9  
for(int cur=l;cur<=r;cur++){ bsuUl*l)  
if(i1==mid+1) p87s99  
data[cur]=temp[i2++]; T 2x~fiM  
else if(i2>r) eG"iJ%I  
data[cur]=temp[i1++]; q&<#)#+  
else if(temp[i1] data[cur]=temp[i1++]; /q uf'CV}  
else W ;P1T"*A  
data[cur]=temp[i2++]; ' uo`-Y  
} ~BERs;4  
} \xDu#/^  
[9BlP  
} "2HRuqf  
d%t]:41=Z  
改进后的归并排序: umcbIi('  
$- =aqUU  
package org.rut.util.algorithm.support; HoH3.AY X  
@Sq=#f/=  
import org.rut.util.algorithm.SortUtil; 7@fd[  
6N~ jt  
/** >,@Fz)\:{'  
* @author treeroot <j ;HRm  
* @since 2006-2-2 nKu`Ta*fX  
* @version 1.0 ,H22;UV9  
*/ vEtogkFA"  
public class ImprovedMergeSort implements SortUtil.Sort { qt^%jIv  
pr;<n\Y{  
private static final int THRESHOLD = 10; 6ynQCD  
xXA$16kd  
/* g~FB&U4c  
* (non-Javadoc) u\t[rC=yd  
* [O"i!AQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4=o3 ZRV  
*/ (pi7TSJ  
public void sort(int[] data) { {)4Vv`n  
int[] temp=new int[data.length]; F#X\}MvEU  
mergeSort(data,temp,0,data.length-1); ;f= :~go  
} .7ahz8v  
F|xXMpC.f  
private void mergeSort(int[] data, int[] temp, int l, int r) { @h>#cwhU  
int i, j, k; ua|qL!L+  
int mid = (l + r) / 2; nXi6Q+YI  
if (l == r) ^}/YGAA  
return; 5\R8>G~H  
if ((mid - l) >= THRESHOLD) ?aOR ^ K  
mergeSort(data, temp, l, mid); + {a  
else 45kMIh~~X  
insertSort(data, l, mid - l + 1); R3?~+ y&  
if ((r - mid) > THRESHOLD) Vq9hAD|k  
mergeSort(data, temp, mid + 1, r); o&(%:|  
else ni2H~{]z  
insertSort(data, mid + 1, r - mid); 82O`<Ci  
"MoV*U2s,  
for (i = l; i <= mid; i++) { "5{Yn!-:  
temp = data; LTzf&TZbx5  
} ^ / f*5k  
for (j = 1; j <= r - mid; j++) { 2<ef&?ljk  
temp[r - j + 1] = data[j + mid]; /R|"/B0  
} _& KaI }O  
int a = temp[l]; C>T6{$xkC  
int b = temp[r]; <>j, Q  
for (i = l, j = r, k = l; k <= r; k++) { *zX<`E  
if (a < b) { :6HMb^4  
data[k] = temp[i++]; JYv&It  
a = temp; ;Jx ^  
} else { OR?8F5o?p  
data[k] = temp[j--]; ]\#RsVX  
b = temp[j]; ni~45WX3  
} oC4rL\d{  
} (/k,q  
} (]7@0d88  
,P auP~L  
/** NA/+bgyuT>  
* @param data * +OAc `8  
* @param l -F8%U:2a  
* @param i 3g-}k  
*/ tCc}}2bC&  
private void insertSort(int[] data, int start, int len) { h$ZF[Xbfe  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _^P>@ ^  
} 5+ fS$Q  
} Cs]xs9  
} 0 |F (qR  
} 4?%0z) g  
tmb0zuJ&C!  
堆排序: ?7G[`@^Y  
t:M>&r:BL  
package org.rut.util.algorithm.support; #(  kT  
b]|7{yMV  
import org.rut.util.algorithm.SortUtil; A=XM(2{aN  
H.>KYiv+  
/** Llk`  
* @author treeroot HnY: gu  
* @since 2006-2-2 3_33@MM  
* @version 1.0 X,y$!2QI  
*/ %'g/4I  
public class HeapSort implements SortUtil.Sort{ /OxF5 bN2  
X='4 N<  
/* (non-Javadoc) 2ZE4^j|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .Bi7~*N  
*/ l  
public void sort(int[] data) { ImF/RKI~ "  
MaxHeap h=new MaxHeap(); xUSIck  
h.init(data); Q|xPm:  
for(int i=0;i h.remove(); u"|.]r  
System.arraycopy(h.queue,1,data,0,data.length); koqH~>ZtD  
} E&[ox[g{  
~4\bR  
private static class MaxHeap{ 7,+:Q Y@  
)%MB o.NL  
void init(int[] data){ rcyH2)Y/e  
this.queue=new int[data.length+1]; _@^msyoq  
for(int i=0;i queue[++size]=data; jXW71$B  
fixUp(size); 4cV(Z-\  
} *S=v1 s/  
} }'@*Olj  
~?L. n:wu  
private int size=0; i, )kI  
F'*{Fk h  
private int[] queue; ;c;;cJc!  
]]7s9PCN  
public int get() { CX1'B0=\r  
return queue[1]; 'E7|L@X"r  
} |20p#]0E+  
LXK+WB/s  
public void remove() { Sk1yend4  
SortUtil.swap(queue,1,size--); V'6%G:?0a  
fixDown(1); G7),!Qol  
} 5k\61(*s  
file://fixdown kwyvd`J8  
private void fixDown(int k) { ^T<<F}@q  
int j; /\=g;o'  
while ((j = k << 1) <= size) { _Y~+ #Vc  
if (j < size %26amp;%26amp; queue[j] j++; .79'c%3}  
if (queue[k]>queue[j]) file://不用交换 }2h~o~  
break; YE^|G,]  
SortUtil.swap(queue,j,k); Ybok[5  
k = j; 6~2!ZU  
} \,_%e[g49  
} =)T5Y,+rJ  
private void fixUp(int k) { rsc8lSjH  
while (k > 1) { )?_c7 R  
int j = k >> 1; W}Z|v M$  
if (queue[j]>queue[k]) s+(8KYTs`  
break; VTV-$Du[}  
SortUtil.swap(queue,j,k); ^c!Hur6)  
k = j; (>Tu~Vo  
} =UYc~VUYnT  
} ~5JXY5 *o  
i4uUvZ f  
} IB?5y~+h  
9pk<=F  
} Z&21gN  
$)\ocsO  
SortUtil: -Ol/r=/&  
TSD7.t)^  
package org.rut.util.algorithm; $MP'j9-S?  
3N<FG.6  
import org.rut.util.algorithm.support.BubbleSort; &1VC0"YJWy  
import org.rut.util.algorithm.support.HeapSort; "4ovMan  
import org.rut.util.algorithm.support.ImprovedMergeSort; N 2x\O~7  
import org.rut.util.algorithm.support.ImprovedQuickSort; -ff*,b$Q/  
import org.rut.util.algorithm.support.InsertSort; #PFf`7b,z  
import org.rut.util.algorithm.support.MergeSort; U`:$1*(`  
import org.rut.util.algorithm.support.QuickSort; \6sp"KqP  
import org.rut.util.algorithm.support.SelectionSort; eR;cl$  
import org.rut.util.algorithm.support.ShellSort; RE*SdazY?  
#^eviF8  
/** Dpof~o,f  
* @author treeroot T"dEa-O  
* @since 2006-2-2 paiF ah  
* @version 1.0 km8[azB o  
*/ hDfsqSK0 /  
public class SortUtil { cQN}z Ke  
public final static int INSERT = 1; ;up89a-,9  
public final static int BUBBLE = 2; @y}1%{,%  
public final static int SELECTION = 3; h"q`gj  
public final static int SHELL = 4; ymzlRs1^Ct  
public final static int QUICK = 5; N.3M~0M*  
public final static int IMPROVED_QUICK = 6; }9@ ,EEhg  
public final static int MERGE = 7; *%Q!22?6F  
public final static int IMPROVED_MERGE = 8; oU{m\r  
public final static int HEAP = 9; 2AU_<Hr6  
^S[Mg6J  
public static void sort(int[] data) { PiM@iS  
sort(data, IMPROVED_QUICK); r0hu?3u1?  
} xy[R9_V  
private static String[] name={ #,$d!l @  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jtN2%w;  
}; :~g=n&x  
0h$23.  
private static Sort[] impl=new Sort[]{ mNs&*h}  
new InsertSort(), 7zy6`O P  
new BubbleSort(), bl:.D~@  
new SelectionSort(), jYuH zf  
new ShellSort(),  &grT}  
new QuickSort(), H{9di\xnEm  
new ImprovedQuickSort(), ^TnBtIU-B  
new MergeSort(), p"Fj6T2  
new ImprovedMergeSort(), LL.YkYu  
new HeapSort() q(_pk&/  
}; 4WDh8U  
nV GrW#'E  
public static String toString(int algorithm){ /1g_Uv;  
return name[algorithm-1]; ,LU/xI0O  
} RXLD5$s^  
@R>J\>  
public static void sort(int[] data, int algorithm) { a B%DIH,  
impl[algorithm-1].sort(data); rT5dv3^MW!  
} >* dqFZF  
t|d9EC]c(  
public static interface Sort { @ Al\:  
public void sort(int[] data); hesL$Z [  
} ,%yjEO  
vA:1z$m  
public static void swap(int[] data, int i, int j) { X8p-VCkV  
int temp = data; De\&r~bTW9  
data = data[j]; Ll%[}C?~]?  
data[j] = temp; $^}?98m  
} }"%tlU!}  
} d\D.l^  
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