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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。 Z/!awf>  
插入排序: <EcxNj1  
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package org.rut.util.algorithm.support; ,LP^v'[V7  
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import org.rut.util.algorithm.SortUtil; ^do6?e`?-  
/** >#'?}@FWQN  
* @author treeroot ^b}Wl0Fn  
* @since 2006-2-2 C/H;|3.X  
* @version 1.0 bwcr/J( Nb  
*/ Fn iht<  
public class InsertSort implements SortUtil.Sort{ AJE$Z0{q  
w^("Pg`  
/* (non-Javadoc) FD&^nJ_{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J#ClQ%  
*/ qS"#jxc==+  
public void sort(int[] data) { ]T)<@bmL  
int temp; !dU$1:7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t%J1(H  
} Iqn (NOq^[  
} 7!h> < sx  
} 4T; <`{]  
M] +.xo+A  
} ez.a  
L &hw- .Q  
冒泡排序: >fth iA  
)B)f`(SA"<  
package org.rut.util.algorithm.support; t1"#L_<e  
hvQXYo>TZx  
import org.rut.util.algorithm.SortUtil; %4Qs|CM)m  
{qbe ye!  
/** :>r W`= e'  
* @author treeroot uv<_.Jq]  
* @since 2006-2-2 .Gvk5Wn  
* @version 1.0 T:zM]%Xh  
*/ iRlpNsN  
public class BubbleSort implements SortUtil.Sort{ 1_A_)l11  
|$e'y x6j  
/* (non-Javadoc) ,G5[?H;ZN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mw}Bl; - O  
*/ {:#nrD"  
public void sort(int[] data) { >iRkhA=Vg  
int temp; &"I csxG  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Dg"szJ-   
if(data[j] SortUtil.swap(data,j,j-1); K)se$vb6  
} yN0`JI  
} y22DBB8  
} W3d+t ?28  
} %''L7o.#a  
%+Y wzL{  
} ?@;)2B|q  
s,8zj<dUv  
选择排序: >`SeX:  
02trjp.f  
package org.rut.util.algorithm.support; B>m*!n: l  
9xhc:@B1J  
import org.rut.util.algorithm.SortUtil; V>,=%r4f  
DcdEt=\)h  
/** Hh*?[-&r~  
* @author treeroot xE]y*\  
* @since 2006-2-2 yz=X{p1  
* @version 1.0 \q4r/SbgW  
*/ ' |B3@9<  
public class SelectionSort implements SortUtil.Sort { s.Bb@Jq  
>:> W=  
/* ,7c Rd}1Y  
* (non-Javadoc) .RJMtmp  
* rF"p7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uOJqj{k_."  
*/ n*A1x8tn  
public void sort(int[] data) { _oCNrjt9  
int temp; {\%I;2X  
for (int i = 0; i < data.length; i++) { XD|g G  
int lowIndex = i; x: _[R{B  
for (int j = data.length - 1; j > i; j--) {  k4dC  
if (data[j] < data[lowIndex]) { B(94;,(  
lowIndex = j; z F.@rXl  
} {GLGDEb  
} jBOl:l,+  
SortUtil.swap(data,i,lowIndex); n=C"pH#  
} m,!SD Cq  
}  fFqYRK  
@sA!o[gH  
} ?6&8-zt1?  
F]UH\1  
Shell排序: Z[d13G;  
'ScvteQ  
package org.rut.util.algorithm.support; L 1!V'Hm{  
e@anX^M;  
import org.rut.util.algorithm.SortUtil; )X[2~E  
i2  c|_B  
/** ^Y%_{   
* @author treeroot ,!^5w,P:   
* @since 2006-2-2 |g)>6+?]W  
* @version 1.0 y^}u L|=  
*/ $Oy&PO e  
public class ShellSort implements SortUtil.Sort{ BLO ]78  
O^row1D_  
/* (non-Javadoc) lV %1I@[M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _W_< bI34  
*/ ){"?@1vP  
public void sort(int[] data) { p^|l ',e  
for(int i=data.length/2;i>2;i/=2){ ,&WwADZ-s  
for(int j=0;j insertSort(data,j,i); =urGs`\  
} 4}v|^_x-i  
} bIyg7X)/  
insertSort(data,0,1); \rzMgR$/rj  
} uHSnZ"#  
qx[c0X!  
/** ektU,Oo  
* @param data -dBWpT  
* @param j ]kTxVe  
* @param i 3dj|jw5  
*/ v /c]=/  
private void insertSort(int[] data, int start, int inc) { 3U+FXK#6  
int temp; 9yC22C:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tOLcnWt   
} ~vt9?(h  
} :vG0 l\  
} % J^x `P  
p\ ;|Z+0=  
} M\5|  
qE8aX*A1/  
快速排序: #xw*;hW<  
II}M|qHaK  
package org.rut.util.algorithm.support; iP"sw0V8  
+|,4g_(j  
import org.rut.util.algorithm.SortUtil; XgHJ Oqt  
X]D,kKasG  
/** DI{*E  
* @author treeroot ;s/<wx-C  
* @since 2006-2-2 4$pV;xV  
* @version 1.0 +)"Rv%.  
*/ 3>@VPMi  
public class QuickSort implements SortUtil.Sort{ zZ8*a\  
{XmCG%%L  
/* (non-Javadoc) 4F6aPo2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tj[E!  
*/ @ CmKF  
public void sort(int[] data) { !EhKg)y=  
quickSort(data,0,data.length-1); 3wq<@dRv4  
} -m%`Di!E  
private void quickSort(int[] data,int i,int j){ ` z0q:ME  
int pivotIndex=(i+j)/2; /GC&@y0yi  
file://swap F9u?+y-xb  
SortUtil.swap(data,pivotIndex,j); h7UNmwj  
~EPVu  
int k=partition(data,i-1,j,data[j]); x~!|F5JbM  
SortUtil.swap(data,k,j); Jq'8"  
if((k-i)>1) quickSort(data,i,k-1); "U-jZ5o"  
if((j-k)>1) quickSort(data,k+1,j); 5z!$=SFz  
XH$r(@Z\7  
} YiDOV)  
/** ,dCEy+  
* @param data bT^dtEr[  
* @param i WqCC4R,-  
* @param j QH9t |l  
* @return l\*9rs:!  
*/ njaMI8|Pa  
private int partition(int[] data, int l, int r,int pivot) { 4}uOut  
do{ SscB&{f  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /D3{EjUE=  
SortUtil.swap(data,l,r); zTw"5N  
} _V-KyK  
while(l SortUtil.swap(data,l,r); p/HDG ^T:u  
return l; 2H)4}5H  
} 7PX`kI  
, ,{UGe 3  
} 73D< wMgZF  
6`e7|ilh6  
改进后的快速排序: Z)#UCoK!c  
a,c!#iyl3  
package org.rut.util.algorithm.support; 9_?xAJ  
WK>|IgK  
import org.rut.util.algorithm.SortUtil; ^Fco'nlM  
0- )K_JV  
/** E=p+z"Ui  
* @author treeroot -V|"T+U  
* @since 2006-2-2 %'=*utOxy  
* @version 1.0 zXn-E  
*/ PC#^L$cg}  
public class ImprovedQuickSort implements SortUtil.Sort { "s(~k  
:pqUUZ6x&  
private static int MAX_STACK_SIZE=4096; ,KW Q 6  
private static int THRESHOLD=10; 9qB0F_xl  
/* (non-Javadoc) LKu\Mh|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S%i^`_=Q  
*/ ZNX38<3h  
public void sort(int[] data) { l4oyF|oJTH  
int[] stack=new int[MAX_STACK_SIZE]; Icnhet4  
l}))vf=i  
int top=-1; qUkM No3  
int pivot; VI&x1C  
int pivotIndex,l,r; FvxM  
_s=H|#l  
stack[++top]=0; _F;v3|`D@<  
stack[++top]=data.length-1; 'BjTo*TB]Z  
,twx4r^  
while(top>0){ esqmj#G  
int j=stack[top--]; Fz%;_%j  
int i=stack[top--]; /*mF:40M;  
147QB+cE  
pivotIndex=(i+j)/2; r!mRUw'u  
pivot=data[pivotIndex]; ?l0Qi  
YA4D?'  
SortUtil.swap(data,pivotIndex,j); * j%x  
mH'~pR>t  
file://partition  8b2 =n  
l=i-1; 9{toPED  
r=j; 6Yj{% G  
do{ uZ!YGv0^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); YX0ysE*V:&  
SortUtil.swap(data,l,r); ;.A}c)b  
} #X}HF$t{=  
while(l SortUtil.swap(data,l,r); i+*!" /De  
SortUtil.swap(data,l,j); P=QxfX0B  
9r!8BjA  
if((l-i)>THRESHOLD){ %=`JWLLG  
stack[++top]=i; /,Xl8<~#  
stack[++top]=l-1; Hc)z:x;Sj  
} {{?g%mQ6  
if((j-l)>THRESHOLD){ Xu]~vik  
stack[++top]=l+1; 2?JV "O=  
stack[++top]=j; Lgg,K//g  
} ;A*SuFbV  
'a ['lF  
} 5?kfE  
file://new InsertSort().sort(data); ?h= n5}Y  
insertSort(data); E(jZ Do  
} ZEP?~zV\A  
/** HL38iXQ( 3  
* @param data ,&P 4%N"  
*/ VfX^iG r  
private void insertSort(int[] data) { ->sxz/L  
int temp; ~dYCY_a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e8F]m`{_"  
} I\~[GsDY  
} s^wm2/Yw  
} )kpEcMlR  
B>,e HXW  
} 4ax{Chn  
~KBa-i%o  
归并排序: kA:mB;:  
zJe KB8  
package org.rut.util.algorithm.support; oP&/>GmXL  
UVo`jb|> o  
import org.rut.util.algorithm.SortUtil; aSzI5J]/=  
`q^#u  
/** 2Y vr|] \8  
* @author treeroot ge~@}&#iO@  
* @since 2006-2-2 f[@96p ?a[  
* @version 1.0 v"USD<   
*/ AUnfhk@$  
public class MergeSort implements SortUtil.Sort{ 8tj]@GE  
[C'bfX5HB5  
/* (non-Javadoc) 2c `m=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wPlM= .Hq?  
*/ SH%NYjj  
public void sort(int[] data) { Y{YbKKM  
int[] temp=new int[data.length]; A3jxjQ  
mergeSort(data,temp,0,data.length-1); Pe`(9&iT.  
} D)d]o&  
sg2;"E@  
private void mergeSort(int[] data,int[] temp,int l,int r){ @!sK@&ow@%  
int mid=(l+r)/2; d54iZ`  
if(l==r) return ; J]F&4 O  
mergeSort(data,temp,l,mid); 6d-\+ t8  
mergeSort(data,temp,mid+1,r); =8AT[.Hh  
for(int i=l;i<=r;i++){ S,#1^S  
temp=data; .ZTvOm'mB^  
} Ez3fL&*  
int i1=l; z$~x 2<  
int i2=mid+1; F9K%f&0 a  
for(int cur=l;cur<=r;cur++){ xye-Z\-t  
if(i1==mid+1) gjS|3ED  
data[cur]=temp[i2++]; '!HTE` Aj  
else if(i2>r) Ds9)e&yYrb  
data[cur]=temp[i1++]; `2lS@  
else if(temp[i1] data[cur]=temp[i1++]; K"#$",}=  
else (Ou%0 KW  
data[cur]=temp[i2++];  ;Shu  
} lA^1}  
} _D '(R  
[&)]-2w2  
} 5 \mRH  
uYh!04u  
改进后的归并排序: ARH~dN*C  
akj<*,  
package org.rut.util.algorithm.support; ,;k+n)  
osW"wh_  
import org.rut.util.algorithm.SortUtil; O)'CU1vMb  
)(iv#;ByL  
/** #N|\7(#~u  
* @author treeroot OF-k7g7  
* @since 2006-2-2 g`Z=Y7jLH  
* @version 1.0 RRL{a6(?  
*/ '6so(>|  
public class ImprovedMergeSort implements SortUtil.Sort { z0z@LA4k6@  
8=8 hbdy;  
private static final int THRESHOLD = 10; -+R,="nRQ  
8&<mg;H,  
/* afm\Iv[*  
* (non-Javadoc) LEb$Fd  
* s,z~qL6&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gq=t7b  
*/ *1|7%*!8  
public void sort(int[] data) {  vy<W4  
int[] temp=new int[data.length]; +|A`~\@N  
mergeSort(data,temp,0,data.length-1); 9vI~vl l  
} 56v G R(  
amBg<P`'_  
private void mergeSort(int[] data, int[] temp, int l, int r) { !/FRL<mp  
int i, j, k; \J'}CX*aQ  
int mid = (l + r) / 2; ohx[_}xN  
if (l == r) t{md&k4  
return; TW|K.t@5#H  
if ((mid - l) >= THRESHOLD) ^Q/*on;A,/  
mergeSort(data, temp, l, mid); [+ud7l  
else $8tk|uh  
insertSort(data, l, mid - l + 1); (s};MdXIz  
if ((r - mid) > THRESHOLD) ,AP&N'  
mergeSort(data, temp, mid + 1, r); qZ1'uln=C-  
else )6"}M;v  
insertSort(data, mid + 1, r - mid); )Z7Vm2a  
2]!@)fio`  
for (i = l; i <= mid; i++) { xS*UY.>  
temp = data; u]p21)m$x  
} d:kB Zrq  
for (j = 1; j <= r - mid; j++) { ?UnQ?F(+G<  
temp[r - j + 1] = data[j + mid]; Jf YgZ\#  
} rH@Rh}#yp  
int a = temp[l]; \8vP"Kr  
int b = temp[r]; a4Q@sn;]  
for (i = l, j = r, k = l; k <= r; k++) { O1c%XwMn^  
if (a < b) { !fOPYgAGKn  
data[k] = temp[i++]; epy2}TI  
a = temp; zsL@0]e&  
} else { D|uvgu2  
data[k] = temp[j--]; rXx#<7`  
b = temp[j]; ,\4]uZ<  
} c_8&4  
} ZW4f "  
} e~)[I!n  
3>O|i2U  
/** ug3\K83aj/  
* @param data a5*r1,  
* @param l +%dXB&9x|Z  
* @param i \xYVnjG,  
*/ 4Aj~mA  
private void insertSort(int[] data, int start, int len) { SNj-h>&Mha  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4XkI? l  
} @16GF!.  
} ) Sn0Y B  
} k{' ZaP)  
} f$I=o N  
{ I#>6  
堆排序: 65EMB%  
0 QTI;3  
package org.rut.util.algorithm.support; YT(N][V  
kx,.)qKk  
import org.rut.util.algorithm.SortUtil; =p5DT  
]#:WL)@  
/** mx Nd_{n  
* @author treeroot K%q5:9m  
* @since 2006-2-2 rc_m{.b  
* @version 1.0 M @5&.  
*/ ] !/  
public class HeapSort implements SortUtil.Sort{ J0xHpe  
&@iOB #H  
/* (non-Javadoc) nFnM9 pdMK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;;0'BdsL`  
*/ |UTajEL  
public void sort(int[] data) { o1AbB?%=  
MaxHeap h=new MaxHeap(); l=DF)#>w  
h.init(data); AtQ.H-8r  
for(int i=0;i h.remove(); $*q|}Tvl#  
System.arraycopy(h.queue,1,data,0,data.length); :ld~9  
} {'b;lA]0  
5m8u:6kQu  
private static class MaxHeap{ )/RG-L  
4'QX1p  
void init(int[] data){ uw;Sfx,s  
this.queue=new int[data.length+1]; VF`!ks  
for(int i=0;i queue[++size]=data; fyQOF ItM  
fixUp(size); (b25g!  
} sN41Bz$q.  
} y4-kuMYR  
B;k'J:-"  
private int size=0; Q'OtXs 80  
EBy7wU`S  
private int[] queue; $1yy;IyR  
]az(w&vqg2  
public int get() { { 4J.  
return queue[1]; U1 _"D+XB  
} VbX P7bZ  
] Lv3XMa  
public void remove() { )eZK/>L&  
SortUtil.swap(queue,1,size--); ocGrB)7eD  
fixDown(1); dl4n -*h  
} DU^.5f  
file://fixdown u*C*O4f>OC  
private void fixDown(int k) { M7=,J;@  
int j; u8-6s+ O  
while ((j = k << 1) <= size) { c p"K?)  
if (j < size %26amp;%26amp; queue[j] j++; gUklP(T=u  
if (queue[k]>queue[j]) file://不用交换 K(;qd Ir  
break; pGs?Y81  
SortUtil.swap(queue,j,k); 4*XNk;Dx  
k = j; s= %3`3Fo  
} KqI:g*H'x7  
} w6BBu0,KC  
private void fixUp(int k) { Rqe. =+Qs  
while (k > 1) { xfRp_;l+R  
int j = k >> 1; ^KhJBM/Z  
if (queue[j]>queue[k]) Y`g oV  
break; :\^b6"}8  
SortUtil.swap(queue,j,k); SkjG}  
k = j; 2uj .*  
} HE&)N clY  
} DTO_IP  
{$8+n::  
} ~/rD _K  
Spn[:u@  
} VrIN.x  
]0UYxv%]  
SortUtil: $@PruY3[  
o GuAF q  
package org.rut.util.algorithm; $;^|]/-  
WARiw[  
import org.rut.util.algorithm.support.BubbleSort; s#^0[ Rt  
import org.rut.util.algorithm.support.HeapSort; tVG;A&\,6  
import org.rut.util.algorithm.support.ImprovedMergeSort; i-|N6J  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7 yE\,  
import org.rut.util.algorithm.support.InsertSort; z~t0l  
import org.rut.util.algorithm.support.MergeSort; VeQGdyhY  
import org.rut.util.algorithm.support.QuickSort; \5a.JfF  
import org.rut.util.algorithm.support.SelectionSort; UFj H8jSBx  
import org.rut.util.algorithm.support.ShellSort; /43l}6I  
e]~p:  
/** }m+Q(2  
* @author treeroot #D9.A7fCc5  
* @since 2006-2-2 $gr>Y2i  
* @version 1.0 i^DMnvV.  
*/ [FBS|v#T  
public class SortUtil { NK0'\~7&  
public final static int INSERT = 1; 7r;1 6"  
public final static int BUBBLE = 2; J4+K)gWB  
public final static int SELECTION = 3; ]'5Xjcx  
public final static int SHELL = 4; KElEGW  
public final static int QUICK = 5; {Z2nc)|7C  
public final static int IMPROVED_QUICK = 6; CcQc!`YC  
public final static int MERGE = 7; )0/9 L  
public final static int IMPROVED_MERGE = 8; /9br&s$B  
public final static int HEAP = 9; lC($@sC%  
m!ZY]:)$  
public static void sort(int[] data) { bMK X9`*o  
sort(data, IMPROVED_QUICK); YE`Y t  
} 7qqzL_d>  
private static String[] name={ 8KJUC&`  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :i&]J$^;  
}; ,7d/KJ^7  
S<7!<]F-  
private static Sort[] impl=new Sort[]{ e]VW\ 6J&  
new InsertSort(), c^I^jg2v  
new BubbleSort(), Bz/ba *  
new SelectionSort(), 7(}'jZ  
new ShellSort(), Y"lEMY  
new QuickSort(), Ph yIea  
new ImprovedQuickSort(), rt^~ I \V  
new MergeSort(), BL&AZv/T  
new ImprovedMergeSort(),  v@EErF  
new HeapSort() 3CD#OCz7&  
}; yeiIP  
x$q}lJv_  
public static String toString(int algorithm){ z)M#9oAM  
return name[algorithm-1]; 'I>USl3hI  
} 9)wYSz'  
sSU|N;"Y  
public static void sort(int[] data, int algorithm) { wG49|!l6T  
impl[algorithm-1].sort(data); 254V)(t^QM  
} #@oB2%&X?  
VpJKH\)Rt(  
public static interface Sort { b? o  
public void sort(int[] data); p6%Vf  
} O14QlIk  
Z"VP<-  
public static void swap(int[] data, int i, int j) { U~D~C~\2;  
int temp = data; 'Q=;I  
data = data[j]; uE.BB#  
data[j] = temp; _M%>Qm  
} Z3&}C h  
} wp@_4Iq1$  
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