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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。 iCE!TmDT  
插入排序: V}Y*Yv  
E4L?4>V@\  
package org.rut.util.algorithm.support; ]7O<|8n!d  
W&IG,7tr  
import org.rut.util.algorithm.SortUtil; ?: yz/9(  
/** {aUnOyX_  
* @author treeroot [mA-sl]  
* @since 2006-2-2 A^>@6d $2  
* @version 1.0 qcS.=Cj?)  
*/ N)H "'#-  
public class InsertSort implements SortUtil.Sort{ XP:A"WK"  
('tXv"fT  
/* (non-Javadoc) ;:fW]5"R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rG}e\ziKuj  
*/ q(6.VU@  
public void sort(int[] data) { YV<y-,Io  
int temp; 6O As%QZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?T/]w-q>  
} Uj):}xgi'  
} N/bOl~!y  
} U!aM63F3  
rm8Ys61\=  
} H#~gx_^U  
q 84*5-  
冒泡排序: dU$VRgP/  
 Y~WdN<g  
package org.rut.util.algorithm.support; 5#,H&ui\  
Dfs*~H 63  
import org.rut.util.algorithm.SortUtil; apo)cR  
>R+-mP!nj  
/** %S`& R5  
* @author treeroot RdYmh>c  
* @since 2006-2-2  zm"  
* @version 1.0 2R[v*i^S  
*/ %MeAa?G-#  
public class BubbleSort implements SortUtil.Sort{ mn7I# ~  
R2,9%!iiX  
/* (non-Javadoc) J~m$7T3Af  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b/M/)o!C  
*/ r5}p .  
public void sort(int[] data) { um.ZAS_kmc  
int temp; D&G6^ME  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'D+xs}\  
if(data[j] SortUtil.swap(data,j,j-1); rH3U;K!  
} c/|{yp$Ga>  
} *;fTiL  
} T$5wH )<  
} L4>14D\  
2~kx3` Q  
} ^kKLi  
/)ZjI W"|  
选择排序: FDMQ Lxf  
Zhfp>D  
package org.rut.util.algorithm.support; Uwc%'=@  
X:GRjoa  
import org.rut.util.algorithm.SortUtil; &C9IR,&  
AYAU  
/** ;6G]~}>o  
* @author treeroot O[ma% E*0  
* @since 2006-2-2 v$y\X3)mB  
* @version 1.0 kE&R;T`Gb%  
*/ ?Mjs[|  
public class SelectionSort implements SortUtil.Sort { T: za},-  
'Z{`P0/^o`  
/* kL'4m  
* (non-Javadoc) 6] x6FeuS  
* T lXS}5^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C4mkt2Eb0a  
*/ yu;EL>G_AY  
public void sort(int[] data) { [V'c  
int temp; 2(eO5.FYF  
for (int i = 0; i < data.length; i++) { JtFq/&{i  
int lowIndex = i; Y&6jFT_  
for (int j = data.length - 1; j > i; j--) { 1)X|?ZD]F  
if (data[j] < data[lowIndex]) { 7{#p'.nc5  
lowIndex = j; $--8%gh dG  
} q8{Bx03m6  
} imM!Me 0TE  
SortUtil.swap(data,i,lowIndex); Z",0 $Gxu  
} 1=5"j]0hY  
} +^AdD8U  
opfnIkCe  
} /TMVPnvz.  
F5*-HR  
Shell排序: | .jWz.c  
bpY*;o$~  
package org.rut.util.algorithm.support; ]&8em1  
b] 5dBZ(  
import org.rut.util.algorithm.SortUtil; {"p ~M7  
Zux L2W  
/** ;]LQ}^MP(  
* @author treeroot x1@,k=qrd  
* @since 2006-2-2 >WZ.Dj0n  
* @version 1.0 MXA?rjd0  
*/ y" =?l  
public class ShellSort implements SortUtil.Sort{ OLG)D#m(4/  
=oSD)z1c?x  
/* (non-Javadoc) C6e5*S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ftyxz&-4$p  
*/ zZ[kU1Fyv  
public void sort(int[] data) { so` \e^d  
for(int i=data.length/2;i>2;i/=2){ Xe4   
for(int j=0;j insertSort(data,j,i); qsj$u-xhX  
}  L` [iI  
} upMs yLp(  
insertSort(data,0,1); Y1 Ql_  
} )u(,.O[cw  
r*{.|>me  
/** \;XJ$~>  
* @param data k)+{Y v*  
* @param j }hn?4ny  
* @param i #66i!}  
*/ Ku'a,\7z  
private void insertSort(int[] data, int start, int inc) { `Am|9LOT  
int temp; t ]BG)]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "smU5 s,P  
} L 0Ckw},,  
} \4 b^*`d  
} 9"[,9HN  
%g?M?D8Ud3  
} v} !lx)#  
61_PSScSY  
快速排序: Ja1`S+  
MgiW9@_(  
package org.rut.util.algorithm.support; CV[9i  
|21V OPBS  
import org.rut.util.algorithm.SortUtil; $}4ao2  
X}GX6qAdt  
/** rw)!>j+&A  
* @author treeroot zeGWM,!  
* @since 2006-2-2 1 Ne;U/  
* @version 1.0 xjp0w7L)J  
*/ IfH/~EtX  
public class QuickSort implements SortUtil.Sort{ Ifp8oL?S;  
%0&,_jM/9  
/* (non-Javadoc) 1!zd#TX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )7NK+k  
*/ F*G]Na@6D  
public void sort(int[] data) { c6b51)sQ"  
quickSort(data,0,data.length-1); h7eb/xEto  
} RSAGSGp  
private void quickSort(int[] data,int i,int j){ +184|nJ<2  
int pivotIndex=(i+j)/2; /Igz[P^\9  
file://swap \FO`WUAF  
SortUtil.swap(data,pivotIndex,j); I*3 >>VN  
)-I/ej^  
int k=partition(data,i-1,j,data[j]); %S%UMA.  
SortUtil.swap(data,k,j); {JdXn  
if((k-i)>1) quickSort(data,i,k-1); gR/?MJ(v  
if((j-k)>1) quickSort(data,k+1,j); 26}3  
l>|scs;TI  
} ~;b}_?%o  
/** wKJ|;o4;L  
* @param data _o w7E\70  
* @param i ByE@4+9  
* @param j [$} \Gv  
* @return _gH$ ,.j/  
*/ -V2f.QE%  
private int partition(int[] data, int l, int r,int pivot) { bRggt6$z  
do{ 0[H />%3O  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {*;K>%r\o  
SortUtil.swap(data,l,r); P*[wB_^&UP  
} }x|q*E\  
while(l SortUtil.swap(data,l,r); 9y[U\[H  
return l; iYiTkq  
} &CQ28WG X  
]fDb|s48  
} _|;d D  
;P' 5RCqj  
改进后的快速排序: Y{~`g(~9_A  
<0Y<9+g!  
package org.rut.util.algorithm.support; K:13t|  
,5U[#6^  
import org.rut.util.algorithm.SortUtil; k v_t6(qd  
{^Q,G x(  
/** ;mI^J=V3  
* @author treeroot ]*MVC/R,  
* @since 2006-2-2 %O!x rA{  
* @version 1.0 ~p'|A}9[/  
*/ #t2N=3dOj  
public class ImprovedQuickSort implements SortUtil.Sort { 4YY!oDN:  
CY':'aWfa<  
private static int MAX_STACK_SIZE=4096; X   
private static int THRESHOLD=10; b*tb$F  
/* (non-Javadoc) Js:U1q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ugo!  
*/ >tkz%;6  
public void sort(int[] data) { Q e/XEW  
int[] stack=new int[MAX_STACK_SIZE]; +P 9eE,WR  
{\k }:)  
int top=-1; B&7:=t,m(  
int pivot; !Mgo~h"]#  
int pivotIndex,l,r; EXbZ9 o*  
Txl|F\nK`  
stack[++top]=0; ;Y8>?  
stack[++top]=data.length-1; R@uA4Al  
\)6AzCq  
while(top>0){ "Uf1;;b  
int j=stack[top--]; /V cbT >=  
int i=stack[top--]; Jza ?DhSAZ  
@+nCNXK  
pivotIndex=(i+j)/2; ]H{* Z3S  
pivot=data[pivotIndex]; gB%"JDn8  
@ G!Ir"Q  
SortUtil.swap(data,pivotIndex,j); } tBw<7fe  
GJ`._ju  
file://partition -Ju;i<  
l=i-1; I5QtPqB>  
r=j; sZ7,7E|_  
do{ XgXXBKf$  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hwvitD!0  
SortUtil.swap(data,l,r); }(DH_0  
} 1=T;68B  
while(l SortUtil.swap(data,l,r); LPs5LE[Pm  
SortUtil.swap(data,l,j); o\><e1P  
L%3Bp/`S  
if((l-i)>THRESHOLD){ $e4N4e2x/  
stack[++top]=i; ,cS_687o  
stack[++top]=l-1; y$di_)&g  
} eB_r.R{  
if((j-l)>THRESHOLD){ v:Gy>&  
stack[++top]=l+1; o7Z 8O,;  
stack[++top]=j; 2yFT` 5+H4  
} _E8Cvaob  
W2v'2qAs  
} Gj%q:[r  
file://new InsertSort().sort(data); 4i&Rd1#0dI  
insertSort(data); 8mLW^R:`  
} $0OOH4  
/** &PApO{#Q  
* @param data ai?N!RX%H  
*/ +e.w]\}  
private void insertSort(int[] data) { 8QL=%Pv  
int temp; q$b 4S4Z7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FG!hb?_1  
} z`$c4p6G6  
} #*w)rGkU2  
} Ahbh,U  
WI*CuJU<zJ  
} 8lDb<i  
Q}l~n)=  
归并排序: lup2> "?*  
bZAL~z+ V  
package org.rut.util.algorithm.support; IsJx5GO  
a9 q:e  
import org.rut.util.algorithm.SortUtil; oclU)f.,  
SO STtuT  
/** ")txFe  
* @author treeroot 9LBZMQ  
* @since 2006-2-2 A n`*![  
* @version 1.0 x@/:{B   
*/ <]DUJuF-M  
public class MergeSort implements SortUtil.Sort{ j_h:_D4  
fE)o-q6Z  
/* (non-Javadoc) 6ce-92n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3O Ks?i3A  
*/ T>b"Gj/  
public void sort(int[] data) {  f}*:wj  
int[] temp=new int[data.length]; -&]!ig5v  
mergeSort(data,temp,0,data.length-1); l\Ww^   
} XR[=W(m}  
E^ c *x^  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ol h{<~Fv  
int mid=(l+r)/2; '|yCDBu  
if(l==r) return ; @OFxnF`  
mergeSort(data,temp,l,mid); X6(s][Wn  
mergeSort(data,temp,mid+1,r); a]%s ks  
for(int i=l;i<=r;i++){ u8%X~K\  
temp=data; 1ZRkVHiz0  
} q &{<HcP  
int i1=l; X's<+hK&  
int i2=mid+1; #pK" ^O*!  
for(int cur=l;cur<=r;cur++){ u^JsKG+,:  
if(i1==mid+1) YHu]\'Ff  
data[cur]=temp[i2++]; lsOfpJ  
else if(i2>r) n{etDO  
data[cur]=temp[i1++]; zA.0Sm  
else if(temp[i1] data[cur]=temp[i1++]; 53a^9  
else ~LOE^6C+~o  
data[cur]=temp[i2++]; ;b1B*B  
} i`+bSg  
} T,>L  
5F ^VvzNn  
} lQ!OD& 6  
%.$7-+:7A  
改进后的归并排序: S++~w9}  
Yc_(g0NK  
package org.rut.util.algorithm.support; B@6L<oZ  
g*LD}`X/-  
import org.rut.util.algorithm.SortUtil; 8 Zp^/43  
wD{c$TJ?{F  
/** Kdp($L9r  
* @author treeroot G-RDQ  
* @since 2006-2-2 3/ }  
* @version 1.0 Qr7v^H~E4.  
*/ 0x]?rd+q8Q  
public class ImprovedMergeSort implements SortUtil.Sort { vDi Opd  
<Up ?w/9  
private static final int THRESHOLD = 10; ^->S7[N?  
"&4r!2A  
/* 6'@{ * u  
* (non-Javadoc) x{<l8vL=-c  
* E!mv}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w7Y@wa!  
*/ 02*qf:kTnA  
public void sort(int[] data) { Ov?J"B'F  
int[] temp=new int[data.length]; IOuqC.RJ}o  
mergeSort(data,temp,0,data.length-1); S1mMz i  
} kL0K[O  
H, :]S-T  
private void mergeSort(int[] data, int[] temp, int l, int r) { zUv#%Q8vw  
int i, j, k; 6},[HpXRc4  
int mid = (l + r) / 2; /}L2LMIm  
if (l == r) &TA{US3~  
return; ]Zc|<f;  
if ((mid - l) >= THRESHOLD) -rm[.  
mergeSort(data, temp, l, mid); bGgpPV  
else e3:L]4t  
insertSort(data, l, mid - l + 1); o,* D8[  
if ((r - mid) > THRESHOLD) u Z-ZZE C  
mergeSort(data, temp, mid + 1, r);  <9yh:1"X  
else u{\'/c7G  
insertSort(data, mid + 1, r - mid); S5y.H  
\#I$H9O  
for (i = l; i <= mid; i++) { |C<#M<  
temp = data; 25{_x3t^  
} 2@GizT*mA  
for (j = 1; j <= r - mid; j++) { ^rP]B-)  
temp[r - j + 1] = data[j + mid]; +s"6[\H1d  
} S**eI<QFSk  
int a = temp[l]; @v#P u_  
int b = temp[r]; \i%mokfbc  
for (i = l, j = r, k = l; k <= r; k++) { :Ez, GAk  
if (a < b) { $#u'XyA  
data[k] = temp[i++]; ,bd jk(  
a = temp; &s(&B>M  
} else { uXh:/KO  
data[k] = temp[j--]; DHw)]WB M  
b = temp[j]; Kob,}NgqZ  
} +?m.uY(  
} xHJkzI  
} g""GQeR  
E8}evi  
/** bG@2f"  
* @param data tZKw(<am  
* @param l fZ7AGP   
* @param i $Emu*'  
*/ N~mr@rXC  
private void insertSort(int[] data, int start, int len) { ZDR@VYi+~  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /+SLq`'u)  
} rHX^bcYK  
} W_Y8)KxG:L  
} :Q3pP"H,}  
} H%>4z3n   
u%)gnj_  
堆排序: 3+>n!8x ;A  
d>8" -$  
package org.rut.util.algorithm.support; '"\M`G  
4<F z![>  
import org.rut.util.algorithm.SortUtil; %(lO>4>|  
CYW@Km{e  
/** $%cc[[/U  
* @author treeroot qVE0[ve  
* @since 2006-2-2 Q,xL8i M,  
* @version 1.0 d)Yl D]I  
*/ 3 J04 $cD  
public class HeapSort implements SortUtil.Sort{ }:ZA)  
qEST[S V  
/* (non-Javadoc) J}X{8Ds9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FHSoj=  
*/ :Tg+)cZ  
public void sort(int[] data) { 67& hXIp  
MaxHeap h=new MaxHeap(); &S*~EM.l8  
h.init(data); ,=m.WmXE  
for(int i=0;i h.remove(); Jd>~gA}l  
System.arraycopy(h.queue,1,data,0,data.length); s51$x M  
} J @"#  
+hmFFQQ}  
private static class MaxHeap{ @9gZH_ur>E  
LJ(WU)CPc  
void init(int[] data){ = (F   
this.queue=new int[data.length+1]; -o6rY9\_!  
for(int i=0;i queue[++size]=data; :BF? r  
fixUp(size); [fa4  
} A>yU0\A  
} l:!L+t*}6  
ilL0=[2  
private int size=0; !rM~   
1jl !VU6  
private int[] queue; E6A"Xo  
`S@TiD*  
public int get() { )O~[4xV~  
return queue[1]; .z`70ot?  
} GrL{q;IO  
^QRg9s,T<  
public void remove() { |:=o\eu&  
SortUtil.swap(queue,1,size--); -[V-f> :  
fixDown(1); ^[tE^(|T  
} ~ y!'\d>q<  
file://fixdown hJ'H@L7  
private void fixDown(int k) { 6@J=n@J$p  
int j; ((k"*f2%  
while ((j = k << 1) <= size) { c~Ka) dF|  
if (j < size %26amp;%26amp; queue[j] j++; 7w/IHML  
if (queue[k]>queue[j]) file://不用交换 #dA$k+3  
break; \WCQ>c?~  
SortUtil.swap(queue,j,k); I9*cEZ!l=e  
k = j; n~*".ZC'Y  
} %X{EupiFA  
} 8-#%l~dr  
private void fixUp(int k) { $RPW/Lyiq  
while (k > 1) { }~XWtWbd-  
int j = k >> 1; 'jtC#:ePK  
if (queue[j]>queue[k]) Wp=3heCa6  
break; )\fY1WD  
SortUtil.swap(queue,j,k); f&^(f1WO  
k = j; pIJXP$v3  
} +$,Re.WnP  
} O<gfZ>  
k&]nF,f  
} n{ ;j  
)u)=@@k21  
} &7aWVKon  
x%G3L\ 5  
SortUtil: L[ G O6l  
??rS h Mu  
package org.rut.util.algorithm; o%$.8)B9F  
9)q3cjP{<  
import org.rut.util.algorithm.support.BubbleSort; 5AYOM=O]t  
import org.rut.util.algorithm.support.HeapSort; %a;#]d  
import org.rut.util.algorithm.support.ImprovedMergeSort; <\aeC2~M  
import org.rut.util.algorithm.support.ImprovedQuickSort; =Ph8&l7~sp  
import org.rut.util.algorithm.support.InsertSort; ut{T:kT  
import org.rut.util.algorithm.support.MergeSort; j9+$hu#a  
import org.rut.util.algorithm.support.QuickSort; >gk_klLh  
import org.rut.util.algorithm.support.SelectionSort; Lx^ eaP5  
import org.rut.util.algorithm.support.ShellSort; /U~|B.z@6  
#< im?  
/** 6[> lzEZ  
* @author treeroot X*8y"~X|vq  
* @since 2006-2-2 *v>ZE6CL  
* @version 1.0 )h!cOEt  
*/ A=Wg0eYy\  
public class SortUtil { m~ tvuz I  
public final static int INSERT = 1; =!O->C:  
public final static int BUBBLE = 2; #o.e (C  
public final static int SELECTION = 3; >ZgzE  
public final static int SHELL = 4; z$32rt8{`v  
public final static int QUICK = 5; k_al*iM>H  
public final static int IMPROVED_QUICK = 6; >qjV{M  
public final static int MERGE = 7; }]?Si6_ZZ  
public final static int IMPROVED_MERGE = 8; 'rD6MY  
public final static int HEAP = 9; ^mS |ff  
>:;dNVz  
public static void sort(int[] data) { kNEEu! G  
sort(data, IMPROVED_QUICK); Zp_(vOc  
} hRcb}>pr  
private static String[] name={ IV QH p  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" yBIlwN`kB  
}; gV_/t+jI  
2ej7Ql_@c  
private static Sort[] impl=new Sort[]{ 'Ts:.  
new InsertSort(), Hd|l6/[xz  
new BubbleSort(), `2~>$Tr  
new SelectionSort(), --$o$EP`  
new ShellSort(), ]rmBM  
new QuickSort(), !d* [QD8  
new ImprovedQuickSort(), S:\i M:  
new MergeSort(), ;SR ESW  
new ImprovedMergeSort(), $Gn.G_"v  
new HeapSort() ) nfoDG#O  
}; #x%'U}sF  
P:qmg"i@3  
public static String toString(int algorithm){ qfkHGW?1/j  
return name[algorithm-1]; weitDr6  
} *dzZOe>,  
E*_^+ %  
public static void sort(int[] data, int algorithm) { ));#oQol9  
impl[algorithm-1].sort(data); 5sD,gZ7  
} g;IlS*Ld  
T) C@6/  
public static interface Sort { da{]B5p\  
public void sort(int[] data); $EMOz=)I#  
} s:`i~hjq  
85{m+1O~  
public static void swap(int[] data, int i, int j) { B*7kX&Uq  
int temp = data; ntiS7g e1  
data = data[j]; T X`X5j  
data[j] = temp; #m+!<  
} l{3B }_,  
} t<%0eu|  
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