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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。 jo_wBJKE  
插入排序: CI )89`  
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package org.rut.util.algorithm.support; DJmT]Q]o)  
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import org.rut.util.algorithm.SortUtil; e5 ?;{H  
/** @N-P[.qL"  
* @author treeroot ^<}eONa  
* @since 2006-2-2 /M1 /  
* @version 1.0 /bd1Bi  
*/ LPNJuz  
public class InsertSort implements SortUtil.Sort{ u#l@:p  
8sG0HI$f+  
/* (non-Javadoc) ;x=k J@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TvzqJ=  
*/ 9"H]zfW  
public void sort(int[] data) { ;m+*R/  
int temp; Oa'DVfw2J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $# /-+>  
} |9F^"7Q~C  
} 2C!Ko"1Y'  
} )lo;y~ o  
D# "ppa}  
} Z7X_U` Q  
MyyNYZ  
冒泡排序: .cV<(J 5o  
Ae0jfTv  
package org.rut.util.algorithm.support; mQ@A3/=`  
,y+}0q-Ou  
import org.rut.util.algorithm.SortUtil; b5MCOW1+  
/Y>$w$S  
/** J ^J$I!  
* @author treeroot U;7Cmti"  
* @since 2006-2-2 :|\{mo1NB  
* @version 1.0 ]R$ u3F  
*/ I+?9}t  
public class BubbleSort implements SortUtil.Sort{ B3lP#ckh  
m;S!E-W  
/* (non-Javadoc) avb'J^}f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O{^ET:K@  
*/ k-$5H~(PZ  
public void sort(int[] data) { LtxeT .  
int temp; /7nircXj@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \=O['#  
if(data[j] SortUtil.swap(data,j,j-1); Y'YvVI  
} i7D)'4gkW  
} <R TAO2  
} LB1AjNJ  
} YQ&Ww|xe  
^11y8[[  
} 6i6m*=h  
9Dq^x&z(  
选择排序: P,|%7'?Y  
]>33sb S6  
package org.rut.util.algorithm.support; JfJLJ(}  
[=})^t?8  
import org.rut.util.algorithm.SortUtil; ;PO{ ips  
9\_^"5l  
/** ^Lx(if WJ  
* @author treeroot ,co~@a@9  
* @since 2006-2-2 &X^ -|7~N  
* @version 1.0 YTc X4cC  
*/ 6z6\-45  
public class SelectionSort implements SortUtil.Sort { a,GOS:?O5  
[ p+]H?(A  
/* Pp*:rA"N  
* (non-Javadoc) [O"9OW'2!B  
* *kmD/J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ps DY}y\"  
*/ jf`QoK  
public void sort(int[] data) { ,G q?  
int temp; B1x# 7>K  
for (int i = 0; i < data.length; i++) { e ej:  
int lowIndex = i;  }de {-  
for (int j = data.length - 1; j > i; j--) { ^V1.Y  
if (data[j] < data[lowIndex]) { A#yZh\#  
lowIndex = j; g[D(]t\#x  
} <|!?V"`3  
} N(6Q`zs  
SortUtil.swap(data,i,lowIndex); h U3!  
} FO"sE`  
} >@g+%K]  
o9<)rUy  
} |61W-9;  
! sN~w  
Shell排序: XF6ed  
%nRz~3X|+v  
package org.rut.util.algorithm.support; ]4uY<9VL  
.T>^bLuFy  
import org.rut.util.algorithm.SortUtil; {Rm N1'%  
;JD/4:  
/** ^&!S nM  
* @author treeroot Smt&/~7D%  
* @since 2006-2-2 !OCb^y  
* @version 1.0 !08\w@  
*/ fEWXC|"  
public class ShellSort implements SortUtil.Sort{ j3Sz+kOf,  
0SHF 8kek  
/* (non-Javadoc) kBRy(?Mft&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j>}<FW-N  
*/ 6h5,XcO4  
public void sort(int[] data) { 0b)q,]l]  
for(int i=data.length/2;i>2;i/=2){ {:63% j  
for(int j=0;j insertSort(data,j,i); iI]E%H}  
} I+!?~]AUuq  
} @VzD> ?)  
insertSort(data,0,1); ~S85+OJ;M  
} pzQWr*5a  
kKFhbHUZa  
/** (}4]U=/nV  
* @param data h1(GzL%i_  
* @param j +o4W8f=Ga  
* @param i !wU~;sL8C3  
*/ \#hp,XV>  
private void insertSort(int[] data, int start, int inc) { [ r<0[  
int temp; yP~O C|Z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,. K}uW  
} IyV%tOy  
} Z ? F*Z0y  
} M[= #%U3*N  
!eC]=PoY  
} +kj d;u#  
?a]1$>r  
快速排序: OgOs9=cE{  
k-;A9!^h  
package org.rut.util.algorithm.support; f]*TIYicc  
eyIbjgpV  
import org.rut.util.algorithm.SortUtil; PCcI(b>?l  
Lj,!0 25  
/**  |4_[wX r  
* @author treeroot h{Zd, 9H  
* @since 2006-2-2 gK6_vS4K)  
* @version 1.0 9i?Q=Vuc~<  
*/ pR,eus;8  
public class QuickSort implements SortUtil.Sort{ H wu (}  
H6vO}pq) r  
/* (non-Javadoc) 9R1S20O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c+bOp 05o-  
*/ 6a%dq"5 +  
public void sort(int[] data) { ?j:g.a+U  
quickSort(data,0,data.length-1); +vSp+X1E  
} \G~<O071  
private void quickSort(int[] data,int i,int j){ s6YnNJ,SK  
int pivotIndex=(i+j)/2; {Rv0@)P$  
file://swap XZew$Om[  
SortUtil.swap(data,pivotIndex,j); KB\A<(o,  
+FGw)>g8'm  
int k=partition(data,i-1,j,data[j]); 5/f"dX  
SortUtil.swap(data,k,j); "?f_U/+D<  
if((k-i)>1) quickSort(data,i,k-1); jg3 X6/'  
if((j-k)>1) quickSort(data,k+1,j); z7PmyU >  
"Ei' FM  
} BM+>.  
/** +ak<yV1=  
* @param data "/~KB~bB  
* @param i r/e} DYL&  
* @param j )C^@U&h&  
* @return O~bJ<O=?  
*/ 6$ \69   
private int partition(int[] data, int l, int r,int pivot) { ^*@D%U  
do{ gc"A Tc  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ebTwU]Nb  
SortUtil.swap(data,l,r); UVlXDebl  
} FDQP|,  
while(l SortUtil.swap(data,l,r); KrzIL[;2o  
return l; &~MM\,KML  
} -SeHz.` N  
}^"#&w3<  
} ys DGF@wZC  
62Q`&n6  
改进后的快速排序: ~ ~U,  
l2ww3)Z  
package org.rut.util.algorithm.support; 8n~ o="  
G{!adBna  
import org.rut.util.algorithm.SortUtil; #BOLq`9 f  
rWS],q=c  
/** }48 o{\  
* @author treeroot ])vWvNx  
* @since 2006-2-2 }Lc8tj<  
* @version 1.0 ZBxV&.9/  
*/ xC^|S0B  
public class ImprovedQuickSort implements SortUtil.Sort { 47yzI-1H+  
BqG7E t  
private static int MAX_STACK_SIZE=4096; C?-_8OA  
private static int THRESHOLD=10; D@iE2-n&V  
/* (non-Javadoc) (V:)`A_-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +h?Rb3=S  
*/ h#?)H7ft  
public void sort(int[] data) { G$7!/O%#_  
int[] stack=new int[MAX_STACK_SIZE]; 5y8ajae:  
e00s*LdC  
int top=-1; *T:gx:Sg/  
int pivot; -_p@I+B  
int pivotIndex,l,r; = t!$72g\  
+T*]!9%<`:  
stack[++top]=0; ^Sj*  
stack[++top]=data.length-1; 7Pp~)Kq=  
b[;Zl<  
while(top>0){ me`|i-   
int j=stack[top--]; %}ASll0uq  
int i=stack[top--]; "IMq +  
$QC^hC  
pivotIndex=(i+j)/2; /vrjg)fer  
pivot=data[pivotIndex]; ki<4G  
} :9UI  
SortUtil.swap(data,pivotIndex,j); %YV3-W8S0  
m14OPZ<3?-  
file://partition %5-   
l=i-1; M?G4k]  
r=j; -xMM}r y  
do{ @mRda %qR  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); NU |vtD  
SortUtil.swap(data,l,r); [D= KI&@&O  
} GGF;4  
while(l SortUtil.swap(data,l,r); F2WMts  
SortUtil.swap(data,l,j); i8 fUzg)  
-5.~POO  
if((l-i)>THRESHOLD){ wpS $ -  
stack[++top]=i; Ou,Eu05jt'  
stack[++top]=l-1; &8'QD~  
} aX,ux9#  
if((j-l)>THRESHOLD){ ^,,lo<d_L  
stack[++top]=l+1; _ H$^m#h  
stack[++top]=j; y1*z," dx  
} GkYD:o=qx  
YM4njkI7  
} Q ~>="Yiu  
file://new InsertSort().sort(data); T*v@hbJ  
insertSort(data); rwCjNky!  
} $]I" ,ef  
/** e(~Y!:Q#O  
* @param data /Z m5fw9  
*/ YdiXj |k+  
private void insertSort(int[] data) { q+)csgN  
int temp; UukHz}(E  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !PuW6  
} \r^*4P,,  
} C$#X6Q!,  
} n&;-rj^qq  
8^)K|+_'m  
} O}cg1Q8p  
* u{CnH  
归并排序: RQt\_x7P  
0$e]?]X6  
package org.rut.util.algorithm.support; y+K21(z.  
&XH{,fv$  
import org.rut.util.algorithm.SortUtil; S)~Riuy$  
;VI W/  
/** ^Z~'>J  
* @author treeroot [/Ya4=C@  
* @since 2006-2-2 p&<X&D   
* @version 1.0 v.pj PBU1  
*/ 9G)q U  
public class MergeSort implements SortUtil.Sort{ `|d&ta[{  
?> SH`\  
/* (non-Javadoc) .X(*mmH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ii4lwZnz  
*/ nd?R|._R  
public void sort(int[] data) { (%^Bp\.02!  
int[] temp=new int[data.length]; Lf} @v  
mergeSort(data,temp,0,data.length-1); 5p5S_%R$e  
} ?Rg8u  
B}A7Usm  
private void mergeSort(int[] data,int[] temp,int l,int r){ f[$9k}.  
int mid=(l+r)/2; dab[x@#r>  
if(l==r) return ; ({l!'>?  
mergeSort(data,temp,l,mid); {<}kqn83sT  
mergeSort(data,temp,mid+1,r); Ow7}&\;^-  
for(int i=l;i<=r;i++){ {8a s _  
temp=data; kTe0"  
} ;.wWw" )  
int i1=l; ~e@pL*s  
int i2=mid+1; +w'{I`QIL0  
for(int cur=l;cur<=r;cur++){ jhmWwT/O8^  
if(i1==mid+1) i][af  
data[cur]=temp[i2++]; ? W`?F  
else if(i2>r) Vg^@6zU  
data[cur]=temp[i1++]; q,H 0=\  
else if(temp[i1] data[cur]=temp[i1++]; DU.nXwl]  
else P0N%77p>"  
data[cur]=temp[i2++]; kH10z~(e  
}  {@gTs  
} g6=w MRt[  
 )$ +5imi  
} <^,5z!z }  
I];Hx'/<~  
改进后的归并排序: l<l6Ey(  
eE'2B."F  
package org.rut.util.algorithm.support; "0yO~;a  
kb>/R/,9  
import org.rut.util.algorithm.SortUtil; gbJz5EEq  
]\Tcy[5  
/** U]h5Q.<SG  
* @author treeroot !ENb \'>J>  
* @since 2006-2-2 ?MhY;z`=  
* @version 1.0 |Skxa\MI  
*/ #[a+m  
public class ImprovedMergeSort implements SortUtil.Sort { 8`/nk `;  
{Noa4i  
private static final int THRESHOLD = 10; ua -cX3E  
WV'FW)%  
/* G()- NJ{  
* (non-Javadoc) aH1mW;,1u  
* RW@sh9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k 8Swra?j  
*/ k!lz_Y  
public void sort(int[] data) { /o19/Pvwm  
int[] temp=new int[data.length]; kN)m"}gX  
mergeSort(data,temp,0,data.length-1); ~+GMn[h  
} UEvRK?mm=  
7TC=$y ,  
private void mergeSort(int[] data, int[] temp, int l, int r) { #sq$i  
int i, j, k; ;&Oma`Ec  
int mid = (l + r) / 2; 9rn[46s`  
if (l == r) _e;$Y#`EO  
return; z$d/Vz,a  
if ((mid - l) >= THRESHOLD) ,\FJVS;NeJ  
mergeSort(data, temp, l, mid); 5r:SBt|/  
else 9 OC!\' 8  
insertSort(data, l, mid - l + 1); M)U 32gI:  
if ((r - mid) > THRESHOLD) HZ1e~IIw  
mergeSort(data, temp, mid + 1, r); @ qfVt  
else v_gQCS  
insertSort(data, mid + 1, r - mid); 1o;+.]B  
5$e|@/(0  
for (i = l; i <= mid; i++) { s C9j73 vf  
temp = data; .cQ<F4)!tu  
} [Pu~kiN  
for (j = 1; j <= r - mid; j++) { H?P:;1A]c  
temp[r - j + 1] = data[j + mid]; C NNyz$  
} mGXjSWsd  
int a = temp[l]; ^]$x/1I;  
int b = temp[r]; kphv)a4z=  
for (i = l, j = r, k = l; k <= r; k++) { ( *(#;|m  
if (a < b) { ^fLePsmd  
data[k] = temp[i++]; J/j?;qx]j  
a = temp; Xw=>L#Q  
} else { DFz,>DM;  
data[k] = temp[j--]; oXc!JZ^  
b = temp[j]; Fvy__ qcHi  
} n0T\dc~  
} u(7PtmV[!  
} 5_ @8g+~  
m q`EM OH  
/** iR9 $E  
* @param data 4*4s{twG  
* @param l 8xQ5[Ov  
* @param i zUM;Qwl  
*/ *N .f_s  
private void insertSort(int[] data, int start, int len) { (>x4X@b  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =8r%zLDw  
} 3hOiHO ;  
} DHO6&8S  
} 9=j"kXFf  
} ZkW,  
a{7>7%[  
堆排序: sS, Swgr  
F#X&Tb{  
package org.rut.util.algorithm.support; -bo5/`x  
 eU"!X9  
import org.rut.util.algorithm.SortUtil; jmbwV,@Q2  
(KDUX t.  
/** Tw< N  
* @author treeroot a a=GW%  
* @since 2006-2-2 #7IM#t c@  
* @version 1.0 G}d-L!YbE'  
*/ r=<Oy1m/  
public class HeapSort implements SortUtil.Sort{ fQ5V RpWGn  
C:/O]slH  
/* (non-Javadoc) l@a>"\><i*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :=BFx"Y  
*/ Wc4F'}s  
public void sort(int[] data) { S ni Ck*T,  
MaxHeap h=new MaxHeap(); ')w:`8Tl  
h.init(data); !>g_9'n'  
for(int i=0;i h.remove(); oZxC.;xJ  
System.arraycopy(h.queue,1,data,0,data.length); Ll%CeP  
} 5Xu2MY=  
EX%KfWDr  
private static class MaxHeap{ _ cK"y2  
wRn]  
void init(int[] data){ [];*9vxW  
this.queue=new int[data.length+1]; ab!,)^  
for(int i=0;i queue[++size]=data; ?GPTJ#=j=]  
fixUp(size); Cpu L[|51  
} t<M^/xe2  
} V,<3uQD9a  
#1i&!et&/  
private int size=0; WG8}}`F|  
LfEeFF=#n  
private int[] queue; 5w)tsGX\  
e`%U}_[d  
public int get() { "d60IM#N?  
return queue[1]; hA.?19<Z  
} Vu '3%~  
-y70-K3  
public void remove() { Z,%^BAJ  
SortUtil.swap(queue,1,size--); 6]yYiz2Xn  
fixDown(1); l2"{uCcA  
} 96UL](l(`  
file://fixdown  ")MjR1p  
private void fixDown(int k) { > 4>!zZ  
int j; =  *7K_M&  
while ((j = k << 1) <= size) { {<{ O!  
if (j < size %26amp;%26amp; queue[j] j++; -&JUg o=  
if (queue[k]>queue[j]) file://不用交换 g5X;]%:  
break; ;uj&j1  
SortUtil.swap(queue,j,k); QFMR~6 ?  
k = j; F!*u}8/_!  
} G. Z:00x  
} pj:s+7"t  
private void fixUp(int k) { ?.d6!vA  
while (k > 1) { \ s^a4l 2  
int j = k >> 1; P` Hxj> {  
if (queue[j]>queue[k]) InnjZ>$  
break; Gf'qPLK0  
SortUtil.swap(queue,j,k); G+2!+N\P  
k = j; u`I&&  
} ;i*<HNQ  
} | +osEHC  
p|!5G&O,  
} U5N/'p%)<  
n qSjP5  
} ]v&)mK]n=o  
\vj<9ke&  
SortUtil: #zflU99d  
F !DDlYUz.  
package org.rut.util.algorithm; ]hNio6CVm  
(}ObX!,  
import org.rut.util.algorithm.support.BubbleSort; Y5nj _xQJL  
import org.rut.util.algorithm.support.HeapSort; ~NT2QY5!K  
import org.rut.util.algorithm.support.ImprovedMergeSort; eT33&:n4  
import org.rut.util.algorithm.support.ImprovedQuickSort; )Qe<XJH!  
import org.rut.util.algorithm.support.InsertSort; 77D>;90>?  
import org.rut.util.algorithm.support.MergeSort; f]Jn\7j4  
import org.rut.util.algorithm.support.QuickSort; H9}z0VI  
import org.rut.util.algorithm.support.SelectionSort; ;}v#hKC~  
import org.rut.util.algorithm.support.ShellSort; "M#A `b  
jdz]+Q`jq  
/** 86pujXjc'  
* @author treeroot m)l<2 `CM  
* @since 2006-2-2 B:Y"X:Y  
* @version 1.0 iNj*G j  
*/ oasp/Y.p  
public class SortUtil { |>_e& }Y%L  
public final static int INSERT = 1; oYOR%'0*m+  
public final static int BUBBLE = 2; T1,Nb>gBq^  
public final static int SELECTION = 3; m)"gj**|y  
public final static int SHELL = 4; NWnUXR  
public final static int QUICK = 5; ^3re*u4b=  
public final static int IMPROVED_QUICK = 6; M)sM G C  
public final static int MERGE = 7; $*N^ bj  
public final static int IMPROVED_MERGE = 8; *AK{GfP_  
public final static int HEAP = 9; Kvx~2ZMx6  
.nDB{@#  
public static void sort(int[] data) { KrVP#|9%"  
sort(data, IMPROVED_QUICK); og0su  
} \ZNUt$\  
private static String[] name={ `sW+R=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zt&"K0X|  
}; /e|vz^#+1,  
vXA+o)*#/  
private static Sort[] impl=new Sort[]{ v\&C]W]  
new InsertSort(), "[A]tklP  
new BubbleSort(), ^j~CYzmt  
new SelectionSort(), =CBY_  
new ShellSort(), imb.CYS74  
new QuickSort(), okwkMd-yW  
new ImprovedQuickSort(), i 'bviD  
new MergeSort(), 'uy\vR&Pz  
new ImprovedMergeSort(), ?2d! ^!9  
new HeapSort() Z`jc*jgy  
}; :Vdo.uUa  
% YgGw:wZ  
public static String toString(int algorithm){ :pz`bFJk  
return name[algorithm-1]; |q+3X)Y  
} b}&2j3-n,  
UdGa#rcNW  
public static void sort(int[] data, int algorithm) { 0eJqDCmH  
impl[algorithm-1].sort(data); "~V|p3  
} w?eJVi@w{  
eMT}"u8$A  
public static interface Sort { JSp V2c5Q  
public void sort(int[] data); J}zN]|bz  
} \S5YS2,P  
{ $ a $m  
public static void swap(int[] data, int i, int j) { -_`dA^  
int temp = data; X(r$OZ  
data = data[j]; `1xJ1 z#  
data[j] = temp; 4hl`~&yDf  
} z4!Y9  
} FaA'%P@  
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