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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。 l_j4DQBRV  
插入排序: ms_ VM>l  
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package org.rut.util.algorithm.support; %Rh;=p`  
^VT1vu %03  
import org.rut.util.algorithm.SortUtil; "C?5f]T  
/** ?%O3Oi Xz  
* @author treeroot E(Rh#+]Y5  
* @since 2006-2-2 ]MtFf6&  
* @version 1.0 &ff&Y.q~  
*/ 8SmnMt  
public class InsertSort implements SortUtil.Sort{ 7B3w\  
L0%hnA@  
/* (non-Javadoc) as+GbstN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /Jf~25F  
*/ \uG`|D n  
public void sort(int[] data) { )R_E|@"  
int temp; ._z 'g_c(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OndhLLz  
} sP'0Sl~NU  
} $[@0^IJq=K  
} WqrgRpM{  
"tS'b+SJ-S  
} JM.XH7k  
ExHAY|UA  
冒泡排序: ?R Fg$Z'^  
7?"y{R>E  
package org.rut.util.algorithm.support; DZ ^1s~  
iF+RnWX\  
import org.rut.util.algorithm.SortUtil; "()sb?&  
bVr*h2 p  
/** 3UUGblg`~  
* @author treeroot L3(^{W]|  
* @since 2006-2-2 1+y"i<3)  
* @version 1.0 Zt3}Z4d  
*/ ?lCd{14Mkh  
public class BubbleSort implements SortUtil.Sort{ N?4q  
RAs0]K  
/* (non-Javadoc) io4A>>W==/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tZWrz e^  
*/ M] V.!z9B  
public void sort(int[] data) { {Z{o"56f  
int temp; zGcqzYbuA  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (3,.3)%`  
if(data[j] SortUtil.swap(data,j,j-1); > ^[z3T  
} PHM:W%g:  
} t@bt6J .{  
} u3tZ[Y2 c  
} (9fdljl],:  
a?cn9i)#  
} 5iFV;W  
VFD%h }  
选择排序: MN;/*t  
q$ghLGz  
package org.rut.util.algorithm.support; @fn6<3  
= Rc"^oS  
import org.rut.util.algorithm.SortUtil; i&+w _hD  
5a8>g [2U  
/** &b C}3D  
* @author treeroot KAA3iA@>+  
* @since 2006-2-2 EH9Hpo  
* @version 1.0 q@#BPu"\l  
*/ 4,eQW[;kk  
public class SelectionSort implements SortUtil.Sort { l`n5~Fs  
q7]>i!A  
/* +QqH}= M  
* (non-Javadoc) 0my9l;X   
* .{rbw9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M[Y4_$k<-  
*/ cz.3|Lby  
public void sort(int[] data) { whkJpK(  
int temp; 0'ZYO.y  
for (int i = 0; i < data.length; i++) { xl!K;Y2<  
int lowIndex = i; a>Re^GT+z  
for (int j = data.length - 1; j > i; j--) { 2*[Un(  
if (data[j] < data[lowIndex]) { P\B3 y+)  
lowIndex = j; $iJnxqn  
} @!H '+c  
} ~w.2 -D  
SortUtil.swap(data,i,lowIndex); r\mPIr|  
} kO3 `54  
} hLA;Bl  
APHPN:v  
} d(l|hmj4j9  
G,DOBA  
Shell排序: 6VR18Y!y  
@\!!t{y  
package org.rut.util.algorithm.support; KS! iL=i  
PNmF}"  
import org.rut.util.algorithm.SortUtil; ]gP8?s|  
46ChMTt  
/** KM5 JZZP  
* @author treeroot ec'tFL#u{  
* @since 2006-2-2 <d! 6[,W;  
* @version 1.0 a J-}  
*/ M.k|bh8  
public class ShellSort implements SortUtil.Sort{ wznn #j  
=HPu {K$  
/* (non-Javadoc) a/e\vwHLv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;eR{tH /4  
*/ 6UB6;-  
public void sort(int[] data) { 33M}>$ZH  
for(int i=data.length/2;i>2;i/=2){ { y/-:=S)A  
for(int j=0;j insertSort(data,j,i); .;Z.F7{q  
} "`]'ZIx[R/  
} [tN` :}?  
insertSort(data,0,1); W"O-L  
} }bgo )<i  
*.dKR  
/** (,TH~("{  
* @param data | XLFV  
* @param j |UZOAGiBg  
* @param i |KaR n;BM  
*/ Xoi9d1fO  
private void insertSort(int[] data, int start, int inc) { P'FKk<  
int temp; Qg{WMlyOP  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F G _,  
} {9{J^@@  
} $O]^Xm3{@  
} g 2#F_  
M\jB)@)  
}  3se$,QmN  
H oS|f0  
快速排序: 5%qH 7[dx  
\!7*(&yly  
package org.rut.util.algorithm.support; 7uA\&/ ,  
'{W3j^m7  
import org.rut.util.algorithm.SortUtil; KT%{G8Y@M  
KE#$+,?  
/** kraVL%72  
* @author treeroot Avd *~  
* @since 2006-2-2 U_}hfLILi  
* @version 1.0 f:FpyCo=9  
*/ "<T ~jk"u  
public class QuickSort implements SortUtil.Sort{ \086O9  
8iOO1I?+  
/* (non-Javadoc) d{l{P] nr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ef,F[-2^o  
*/ @Z"?^2  
public void sort(int[] data) { vQcUaPm\$  
quickSort(data,0,data.length-1); K~$35c3M  
} \E~Q1eAJT  
private void quickSort(int[] data,int i,int j){ ifd}]UMQ  
int pivotIndex=(i+j)/2; h%/ssB  
file://swap dGa@<hg  
SortUtil.swap(data,pivotIndex,j); m.Twgin  
u5/t2}^T  
int k=partition(data,i-1,j,data[j]); `{%-*f^  
SortUtil.swap(data,k,j); Jtext%"eNg  
if((k-i)>1) quickSort(data,i,k-1); !4_!J (q%  
if((j-k)>1) quickSort(data,k+1,j); cJ2y)`  
G IK u  
} kO jEY  
/** ` v>/  
* @param data ]u~Os<   
* @param i pAMo XJ`  
* @param j n}42'9p  
* @return &bn*p.=G  
*/ eS* *L 3  
private int partition(int[] data, int l, int r,int pivot) { V;P1nL4L  
do{ l<s :%%CX  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _dJp 3D  
SortUtil.swap(data,l,r); MkkA{p  
} vi^z5n  
while(l SortUtil.swap(data,l,r); <` #,AVH  
return l; |G>q:]+AV  
} 5s#R`o %Z  
sw[<VsxjR  
} 4$ ..r4@  
w4NZt|>5j;  
改进后的快速排序: |&9tU  
l.sm~/  
package org.rut.util.algorithm.support; ]~$c~*0g  
gv`%Z8u(  
import org.rut.util.algorithm.SortUtil; U`:lAG  
SnH:(tO[X  
/**  =7*oC  
* @author treeroot e6Wl7&@6  
* @since 2006-2-2 YCtIeq%  
* @version 1.0 |G[{{qZM5  
*/ <{3q{VW*  
public class ImprovedQuickSort implements SortUtil.Sort { c& 9+/JYMo  
]!n*V/g  
private static int MAX_STACK_SIZE=4096; 8h55$j  
private static int THRESHOLD=10; /%2:+w  
/* (non-Javadoc) pyu46iE)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x& mz-  
*/ AaJ,=eQ  
public void sort(int[] data) { #p11D= @[  
int[] stack=new int[MAX_STACK_SIZE]; 5JJg"yuY"  
v'mJ~tz  
int top=-1; CD XB&%Sr  
int pivot; {s9y@c*15.  
int pivotIndex,l,r; 6$xo# }8  
~ex~(AWh  
stack[++top]=0; sa\|"IkD2  
stack[++top]=data.length-1; `kaR@t  
iKR8^sj7S  
while(top>0){ 'fp<FeTg  
int j=stack[top--]; T%N~oa  
int i=stack[top--]; TWl(\<&+)  
G}Qk!r  
pivotIndex=(i+j)/2; ogkz(wZ  
pivot=data[pivotIndex]; ?=pZmvQg  
C[Y%=\6'0  
SortUtil.swap(data,pivotIndex,j); //`cwnjp  
r1^m#!=B  
file://partition KoxGxHz^Y3  
l=i-1; wfU&{7yt  
r=j; dA_V:HP  
do{ b7>,-O  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [~Z'xY y  
SortUtil.swap(data,l,r); vUodp#s  
} $)kBz*C[  
while(l SortUtil.swap(data,l,r); GDNh?R  
SortUtil.swap(data,l,j); N4Fy8qU;  
*'AS^2'  
if((l-i)>THRESHOLD){ ZmYSi$B  
stack[++top]=i; {8*d;[X50  
stack[++top]=l-1; ~_# Y,)S!z  
} GtAJ#[5w  
if((j-l)>THRESHOLD){ `lV  
stack[++top]=l+1; 9wDBC~.  
stack[++top]=j; 7am/X.  
} 6Mf3)o2  
ac+k 5K+  
} 6iV"Tl{z-  
file://new InsertSort().sort(data); iz%A0Z+`bg  
insertSort(data); Vm,f3~  
} 3Q!J9t5dc  
/** t}c}@i_c  
* @param data $ <>EwW  
*/ bVAgul=__  
private void insertSort(int[] data) { %t5BB$y  
int temp; #ejw@bd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Jv4D^>yj[  
} :+%h  
} 5sh u76  
} _ \y0 mc4  
9,EaN{GM  
} vxilQp  
L->f= 8L  
归并排序: 6E\\`FE4y  
_ c(C;s3o  
package org.rut.util.algorithm.support; BJ.8OU*9]S  
h<^:Nn  
import org.rut.util.algorithm.SortUtil; afP&+ 5t@O  
~b6<uRnM.  
/** V^$rH<  
* @author treeroot AZ9\>U@hD  
* @since 2006-2-2 gt t$O  
* @version 1.0 j~L1~@  
*/ f;tyoN0wHx  
public class MergeSort implements SortUtil.Sort{ 5c}9  
VgZaDd;  
/* (non-Javadoc) EDidg"0p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y!6:  
*/ `j!2uRFe>  
public void sort(int[] data) {  n wZr3r  
int[] temp=new int[data.length]; ssJDaf79  
mergeSort(data,temp,0,data.length-1); xjhAAM  
} a6k(O8Ank3  
P7k$^n  
private void mergeSort(int[] data,int[] temp,int l,int r){ `TlUJ]d)  
int mid=(l+r)/2; o? O,nD 6  
if(l==r) return ; C8W`Oly:]  
mergeSort(data,temp,l,mid); QH' [ (  
mergeSort(data,temp,mid+1,r); 6[2?m*BsN  
for(int i=l;i<=r;i++){ cV_IG}LJ  
temp=data; `Ig2f$}  
} Oc/_ T>  
int i1=l; h. (;GJO  
int i2=mid+1; ocuVDC  
for(int cur=l;cur<=r;cur++){ !>2\OSp!  
if(i1==mid+1) Is6']bYh  
data[cur]=temp[i2++]; M7<#=pX&  
else if(i2>r) o`8+#+@f7  
data[cur]=temp[i1++]; 0G\myv  
else if(temp[i1] data[cur]=temp[i1++]; 'kg]|"M  
else [`-O-?=  
data[cur]=temp[i2++]; Fx99"3`3  
} n25tr'=  
} &|\}\+0Z  
Vv)E41  
} [O+^eE6h  
>\.[}th}  
改进后的归并排序: :+^$?[6]  
zu*G4?]~h  
package org.rut.util.algorithm.support; e, 0I~:  
6N+)LF}P b  
import org.rut.util.algorithm.SortUtil; F4<2.V)#-  
g#%FY1xp  
/** %PdYv _5  
* @author treeroot MVv^KezD  
* @since 2006-2-2 M@X#[w:  
* @version 1.0 |21hY  
*/ RowiSW  
public class ImprovedMergeSort implements SortUtil.Sort { g7LW?Ewr  
,Ve@=<  
private static final int THRESHOLD = 10; <$6'Mzf  
{BCj VmY  
/* HeifFJn  
* (non-Javadoc) Y9L6W+=T  
* N_k6UA9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u\geD  
*/ ~d `4W<1a  
public void sort(int[] data) { U@5Z9/n{  
int[] temp=new int[data.length]; :Fd9N).%  
mergeSort(data,temp,0,data.length-1); sK/"  
} DF|lUO]:  
vGHYB1=~  
private void mergeSort(int[] data, int[] temp, int l, int r) { fToI,FA  
int i, j, k; W8h\ s {  
int mid = (l + r) / 2; -86:PL(I"  
if (l == r) $cU/Im`  
return; AHD%6 \$  
if ((mid - l) >= THRESHOLD) pDq_nx9  
mergeSort(data, temp, l, mid); ~WXxVm*@  
else ^tcBxDC"]  
insertSort(data, l, mid - l + 1); emPm^M5/K  
if ((r - mid) > THRESHOLD) Bic { H  
mergeSort(data, temp, mid + 1, r); &it/@8yH  
else l*H"]6cXRL  
insertSort(data, mid + 1, r - mid); r$Qh`[<  
m9c T}x&j  
for (i = l; i <= mid; i++) { u*N8s[s'  
temp = data; wu&7#![,  
} fr2w k}/b  
for (j = 1; j <= r - mid; j++) { iZ\z!tHR  
temp[r - j + 1] = data[j + mid]; mJR T+SZ  
} }?kO<)d  
int a = temp[l]; R_n-&d 'PP  
int b = temp[r]; Nb/%>3O@  
for (i = l, j = r, k = l; k <= r; k++) { 17MjIX  
if (a < b) { as!j0j%  
data[k] = temp[i++]; Lta\AN!c  
a = temp; 4:g:$s|SE[  
} else { 0*@S-Lj^c  
data[k] = temp[j--]; D+""o"%  
b = temp[j]; jloyJ@ck  
} <t37DnCgI  
} In M'zAhb  
} ]_8 \g`"u  
xR`2+t&t  
/** t&]Mt 7  
* @param data f"^tOgGH  
* @param l K.m[S[cy  
* @param i  U~t(YT  
*/ cpnwx1q@  
private void insertSort(int[] data, int start, int len) { %WN2 xCSf  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); hj,x~^cS  
}  |?A-?-  
} 0+pJv0u  
} .9Fm>e+!C  
} ZE` {J =,  
dxWw%_Q  
堆排序: = g}yA=.  
=LnAMl#9  
package org.rut.util.algorithm.support; 1_lL?S3,a@  
w,9F riW  
import org.rut.util.algorithm.SortUtil; 3vU (4}@  
P$I\)Q H  
/** =C)1NJx&~  
* @author treeroot !F)oX7"  
* @since 2006-2-2 ;D:T ^4  
* @version 1.0 }*.*{I  
*/ _AYF'o-Cm  
public class HeapSort implements SortUtil.Sort{ qr6jn14.c  
*/E{s?  
/* (non-Javadoc) fif<[Ax  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @1@WB ]mQQ  
*/ tO3 ;; %  
public void sort(int[] data) { 063;D+  
MaxHeap h=new MaxHeap(); (Lnh> '2  
h.init(data); ] ),' =@  
for(int i=0;i h.remove(); `f]O  
System.arraycopy(h.queue,1,data,0,data.length); CI{x/ e^(  
} GNOC5 E$I  
O]lfs >>x  
private static class MaxHeap{ uL F55:`<  
oVW?d]R  
void init(int[] data){ mM.&c5U  
this.queue=new int[data.length+1]; 9G~P)Z!0  
for(int i=0;i queue[++size]=data; EA.U>5Fq  
fixUp(size); rI/KrBM  
} YyIt-fPZ  
} %>TdTt  
`l#g`~L  
private int size=0; 8t%1x|!  
a0.XJR{T"  
private int[] queue; G\%hT5^  
4+Y5u4 `t  
public int get() { \.] U  
return queue[1]; -S @:  
} =P{RHhWy;  
's<}@-]  
public void remove() { e{&gF1" [  
SortUtil.swap(queue,1,size--); 3yN1cd"#?  
fixDown(1); BL67sva;  
} sa*-B  
file://fixdown gp=0;#4 4  
private void fixDown(int k) { o1\8>Ew  
int j; &bQ^J%\  
while ((j = k << 1) <= size) { 9"S3AEI  
if (j < size %26amp;%26amp; queue[j] j++; fp0Va!T(V  
if (queue[k]>queue[j]) file://不用交换 A_%w (7o"  
break; M .,|cx  
SortUtil.swap(queue,j,k); 2uIAnbW]M  
k = j; FhGbQJ?[3  
} Q*: Ow]  
} *F0N'*  
private void fixUp(int k) { iQF93:#  
while (k > 1) { 9[M u   
int j = k >> 1; jLTs1`I/F  
if (queue[j]>queue[k]) D$HxPfDZ  
break; zeX?]@]Y  
SortUtil.swap(queue,j,k); >nX'RE|F  
k = j; EcU9Tm`h  
} wal }[F#  
} Sgj6tH2M  
}_ E  
} ]7;;uhn`  
']Z8C)tK  
} xpz Jt2S  
P}gh-5x  
SortUtil: rQJoaP+\q  
YC~+r8ME$j  
package org.rut.util.algorithm; F/8y p<_r  
J$0*K+m  
import org.rut.util.algorithm.support.BubbleSort; ?W()Do1tR  
import org.rut.util.algorithm.support.HeapSort; ?=/l@d  
import org.rut.util.algorithm.support.ImprovedMergeSort; i+}M#Y-O  
import org.rut.util.algorithm.support.ImprovedQuickSort; lgl/| ^ Uw  
import org.rut.util.algorithm.support.InsertSort; ;XT$rtuX  
import org.rut.util.algorithm.support.MergeSort; r_G`#Z_5F  
import org.rut.util.algorithm.support.QuickSort; !SnpesTn  
import org.rut.util.algorithm.support.SelectionSort; _),@^^&x  
import org.rut.util.algorithm.support.ShellSort; A Ho<E"R\  
<$E8T>U  
/** M5]w U   
* @author treeroot i|*:gH  
* @since 2006-2-2 OR3TRa XD  
* @version 1.0 A.n1|Q#  
*/ RW 5T}  
public class SortUtil { a^BD55d?  
public final static int INSERT = 1; \ C Yu;  
public final static int BUBBLE = 2; 4"{q|~&=:$  
public final static int SELECTION = 3; JmkJ^-A 6  
public final static int SHELL = 4; d=[ .   
public final static int QUICK = 5; @ o]F~x  
public final static int IMPROVED_QUICK = 6; c c:xT0Y  
public final static int MERGE = 7; ~c4Y*]J  
public final static int IMPROVED_MERGE = 8; Ae1},2py  
public final static int HEAP = 9; "'%x|nB  
XIU2l}g  
public static void sort(int[] data) { J{H475GqiT  
sort(data, IMPROVED_QUICK); }U9e#>e x  
} d<]/,BY'  
private static String[] name={ )j](_kvK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ws=y*7$y  
}; Mvux=Ws  
H_9~gi  
private static Sort[] impl=new Sort[]{ SLW1]ZaG  
new InsertSort(), F)C8LH  
new BubbleSort(), gN*8 zui  
new SelectionSort(), g& {YHq^+  
new ShellSort(), {z w#My   
new QuickSort(), gCmGFQE-f  
new ImprovedQuickSort(), =3FXU{"Qi4  
new MergeSort(), \-^3Pe,  
new ImprovedMergeSort(), OA+W$  
new HeapSort() d/e9LK  
}; 7{6wNc  
fy-( B;  
public static String toString(int algorithm){ N3,EF1%  
return name[algorithm-1]; l! GPOmf9`  
} aD.A +es  
D`u{U]  
public static void sort(int[] data, int algorithm) { Ou/{PK}  
impl[algorithm-1].sort(data); Q,scjt[  
} k vb"n}  
ak R*|iK#b  
public static interface Sort { Xh ?{%?2  
public void sort(int[] data); T+I|2HYqOj  
} N7|ctO  
6uDNqq  
public static void swap(int[] data, int i, int j) { s;>jy/o0 s  
int temp = data; gX[6WB"p  
data = data[j]; y<)x`&pcD  
data[j] = temp; f+rBIE  
} >scEdeM  
} wuPx6hCl  
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