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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。 8(* ze+8  
插入排序: k>:\4uI|<\  
m>!aI?g  
package org.rut.util.algorithm.support; 0hq\{pw_y*  
8TYoa:pZ  
import org.rut.util.algorithm.SortUtil; <m%ZDOMa  
/** m" ]VQnQ  
* @author treeroot zRB LkrC  
* @since 2006-2-2 a@! O}f*  
* @version 1.0 |wyua@2  
*/ $v=(`=  
public class InsertSort implements SortUtil.Sort{ }s.\B    
p@wtT"Y  
/* (non-Javadoc) y/"CWD/i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A9z3SJ\vXl  
*/ xiF}{25a  
public void sort(int[] data) { v3cLU7bi?2  
int temp; /Y [ b8f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $I9U.~*  
} nQG<OVRClS  
} yjM!M|  
} ?&POVf>  
22`e7  
} f+2mX"Z[F  
ONLhQJCb  
冒泡排序: `* cJc6  
:e\M~n+y  
package org.rut.util.algorithm.support; 9!6u Yf+  
|wuN`;gc"  
import org.rut.util.algorithm.SortUtil; CH$* =3M  
0bjZwC4J  
/** v 1 f^gde  
* @author treeroot hfs QAa  
* @since 2006-2-2 Bd[H@oKru  
* @version 1.0 w} r mYQ  
*/ 7Kt i&T  
public class BubbleSort implements SortUtil.Sort{ a)!R4  
*]ME]2qP  
/* (non-Javadoc) 8x9;3{R   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #y1M1Og  
*/ Jjh=zxR>  
public void sort(int[] data) { VgMuX3=  
int temp; 0kaMYV?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^ j<2s"S  
if(data[j] SortUtil.swap(data,j,j-1); }p*WH$!~  
} M+7jJ?n  
} kMg[YQ]OC  
} ZC)m&V 1  
} `-5gsJ  
35YDP|XZb  
} @ZtvpL}e  
vSk1/  
选择排序: S~GS:E#  
?Xq kf>  
package org.rut.util.algorithm.support; 'N/u< `)  
cgR8+o  
import org.rut.util.algorithm.SortUtil; t]xR`Rr;X  
UhSaqq  
/** 5w</Ga  
* @author treeroot 9dp1NjOtAc  
* @since 2006-2-2 #YSFiy:+r_  
* @version 1.0 }jYVB|2  
*/ isz-MP$:K5  
public class SelectionSort implements SortUtil.Sort { {-yw@Kq  
YyC$\HH6  
/* jr^btVOI#\  
* (non-Javadoc) ty8E;[ '  
* AdRK)L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `Nv7c{M^  
*/ KnUVR!H|  
public void sort(int[] data) { \Lm`jU(:l  
int temp; "f-HOd\=  
for (int i = 0; i < data.length; i++) { M?I^`6IOc8  
int lowIndex = i; {ApjOIxk  
for (int j = data.length - 1; j > i; j--) { H2CpZK'  
if (data[j] < data[lowIndex]) { V|pO";%>,  
lowIndex = j; Q=^TKsu  
} #X0Y8:vj  
} 1c4:'0  
SortUtil.swap(data,i,lowIndex); 3/8<dc  
} Y5<W"[B!  
} :%IB34e  
H )Ze{N  
} }zrapL"9X  
i_p-|I:hQ  
Shell排序: a!, X@5  
n{"a 0O  
package org.rut.util.algorithm.support; UFyk%#L  
Oki{)Ssy  
import org.rut.util.algorithm.SortUtil; "fu@2y4^  
*4c5b'u  
/** I~,bZA  
* @author treeroot _BG7 JvI  
* @since 2006-2-2 _[N*k"  
* @version 1.0 Y$W)JWMY`  
*/ [!`5kI  
public class ShellSort implements SortUtil.Sort{ Zl?9ibm;@  
, jCE hb  
/* (non-Javadoc) 3lN@1jlh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |q Pu*vR  
*/ ]qiX"<s>~C  
public void sort(int[] data) { F:LrQu  
for(int i=data.length/2;i>2;i/=2){ [$Jsel<T=  
for(int j=0;j insertSort(data,j,i); 0*6Q 8`I  
} FPu$Nd&\  
} Tj!rAMQk  
insertSort(data,0,1); ~ F>'+9?Sn  
} fPG3$<Zr  
h79~d%-  
/** x}#N?d  
* @param data 2g;Id.i>  
* @param j {N@Pk[!  
* @param i G}@a]EGm  
*/ )g`~,3G  
private void insertSort(int[] data, int start, int inc) { ~Sx\>wBlc  
int temp; 6ck%M#v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6u{%jSA>D\  
} dyB@qh~H  
} i$CF*%+t  
} br*PB]dU  
&5hs W1`  
} i_av_I-  
]2MX7  
快速排序: Y.% Vvg4z3  
CaV)F3   
package org.rut.util.algorithm.support; uS! V_]  
I 1Yr{(ho  
import org.rut.util.algorithm.SortUtil; Nr`v|_U  
@IOl0db  
/** _!9I f  
* @author treeroot Op hD_^  
* @since 2006-2-2 GF*uDJ Kp  
* @version 1.0 9rT"_d#  
*/ hd)WdGJp  
public class QuickSort implements SortUtil.Sort{ otQ G6  
9G4os!x)  
/* (non-Javadoc) lz _ r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c-4z8T#M^  
*/ q&^H" fF  
public void sort(int[] data) { Wl]XOUZ  
quickSort(data,0,data.length-1); M*aYcIU((  
} $dug"[  
private void quickSort(int[] data,int i,int j){ w4l]rH  
int pivotIndex=(i+j)/2; 4|DN^F~iut  
file://swap @?& i   
SortUtil.swap(data,pivotIndex,j); (t,mtdD#1  
:0Fc E,1  
int k=partition(data,i-1,j,data[j]); nI8zT0o  
SortUtil.swap(data,k,j); 1D%E})B6  
if((k-i)>1) quickSort(data,i,k-1); 8tzL.P^  
if((j-k)>1) quickSort(data,k+1,j); W3n[qVZIC  
<]*Jhnx/  
} \8USFN~(Y  
/** ruy?#rk  
* @param data Y\F4  
* @param i CiTWjE?|7  
* @param j <eZrb6a'  
* @return )M@^Z(W/a  
*/ F1p|^hYDW  
private int partition(int[] data, int l, int r,int pivot) { L+0:'p=  
do{ n%!50E6*:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %1)JRc  
SortUtil.swap(data,l,r); zbfe=J4c  
} .`oKd@I*"  
while(l SortUtil.swap(data,l,r); j?VHR$  
return l; V(Oi!(H;v  
} }d@;]cps  
S`vw<u4t  
} J!}R>mR  
ajX] ui  
改进后的快速排序: #hXuGBZEI  
!04 ^E  
package org.rut.util.algorithm.support; }&%&0$%  
|*L/ m0'L  
import org.rut.util.algorithm.SortUtil; WN o+%  
&iT^IkA{  
/** kD6Iz$tr  
* @author treeroot 4v2JrC;  
* @since 2006-2-2 5Hs !s+  
* @version 1.0 2FGCf} ,  
*/ ?i}wm`  
public class ImprovedQuickSort implements SortUtil.Sort { 2~h Q   
s:I 8~Cc  
private static int MAX_STACK_SIZE=4096; JC}T*h>Ee  
private static int THRESHOLD=10; y8]vl;88yY  
/* (non-Javadoc) CS0q#?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5'_:>0}  
*/ ML%JT x0+Z  
public void sort(int[] data) { P#"_H}qC*  
int[] stack=new int[MAX_STACK_SIZE]; T7N\b]?j@Y  
,QLy }=N  
int top=-1; {fMo#`9=  
int pivot; !ED,'d%J  
int pivotIndex,l,r; ;XXEvRk  
Uh^j;s\y  
stack[++top]=0; WL3J>S_  
stack[++top]=data.length-1; 1"T&B0G3l  
B0^:nYko  
while(top>0){ rK4 pYo  
int j=stack[top--]; ?S.LGc  
int i=stack[top--]; ~xc0Ky?8  
S}K-\[i?  
pivotIndex=(i+j)/2; 'Y/8gD~.  
pivot=data[pivotIndex]; eYPIZ{S7h  
Gz7,g Y  
SortUtil.swap(data,pivotIndex,j); $BOpjDV8  
{<i(aq?  
file://partition ""jl  
l=i-1; GD!!xt  
r=j; !X=93%  
do{ t`1~5#?Du(  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); " pL5j  
SortUtil.swap(data,l,r); u3HaWf3  
} Apkb!"}>  
while(l SortUtil.swap(data,l,r);  0 - u,AD  
SortUtil.swap(data,l,j); CC]q\%y-_  
#?~G\Ux0/  
if((l-i)>THRESHOLD){ ,Uy~O(F t  
stack[++top]=i; sO)!}#,   
stack[++top]=l-1; zhU^~4F  
} #*G}v%Ow/u  
if((j-l)>THRESHOLD){ >jc17BJq  
stack[++top]=l+1; vQ[ Tc V  
stack[++top]=j; E%$[*jZ  
} e{.P2rnh  
xP 3>8Y  
} > Qh#pn*  
file://new InsertSort().sort(data); -U@ycx|r  
insertSort(data); UiZ1$d*  
} tz2$j@!=  
/** A$TF a:O|  
* @param data TaZlfe5z  
*/ r6 kQMFA  
private void insertSort(int[] data) { N Q }5'  
int temp; +lJD7=%K]Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DMT2~mh  
} 5 gwEr170  
} ShOB"J-  
} %i&\ X[  
RG- ,<G`  
} ST\d -x  
{tnhP^C3>  
归并排序: -i4hJC!3  
pFEU^]V3*  
package org.rut.util.algorithm.support; U"K%ip:Wd  
+b{tk=Q:  
import org.rut.util.algorithm.SortUtil; &>XSQB(&%  
5%" 0  
/** [O6JVXO>  
* @author treeroot "mcuF]7F  
* @since 2006-2-2 ?)4c!3#  
* @version 1.0 Q>\9/DjUp  
*/ /-g%IeF  
public class MergeSort implements SortUtil.Sort{ ;AT~?o`n  
 "-G&]YMl  
/* (non-Javadoc) Tg v]30F)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wA6<Buj D  
*/ 3 FLht L  
public void sort(int[] data) { 2O`s'&.h  
int[] temp=new int[data.length]; > Cx;h=  
mergeSort(data,temp,0,data.length-1); _Tf0L<A'R  
} q_:B=w+bC  
9tB:1n}  
private void mergeSort(int[] data,int[] temp,int l,int r){ MUp{2_RA  
int mid=(l+r)/2; -yY]0  
if(l==r) return ; ?gS~9jgcd  
mergeSort(data,temp,l,mid); u~27\oj,  
mergeSort(data,temp,mid+1,r); Ce PI{`&,  
for(int i=l;i<=r;i++){ Mey=%Fv  
temp=data; ~93+Oxg  
} 6Ou[t6  
int i1=l; M_\)<a(8  
int i2=mid+1; {-s7_\|p(  
for(int cur=l;cur<=r;cur++){ MG$Df$R  
if(i1==mid+1) #:nds,   
data[cur]=temp[i2++]; !^w}Sp  
else if(i2>r) }vQ Y+O  
data[cur]=temp[i1++]; R<ZyP~  
else if(temp[i1] data[cur]=temp[i1++]; HuajdC~  
else L%4Do*V&  
data[cur]=temp[i2++]; pg4jPuCM  
} G88g@Exk  
} o&rNM5:  
:4S~}}N  
} IaRq6=[  
],Y+|uX->  
改进后的归并排序: (%|L23  
NSQf@o  
package org.rut.util.algorithm.support; *AI?md  
%;YERO!  
import org.rut.util.algorithm.SortUtil; {i:Ayhq~&  
Rm=[Sj84  
/** SWMi+)  
* @author treeroot ,F0bkNBG  
* @since 2006-2-2 wfBf&Z0{  
* @version 1.0 r`d.Wy Zj  
*/ X:gE mcXc  
public class ImprovedMergeSort implements SortUtil.Sort { #Pq.^ ^  
"?Xb$V7  
private static final int THRESHOLD = 10; 4(}V$#^+  
mX QVL.P\  
/* #6qLu  
* (non-Javadoc) MNsgD3  
* #wZBWTj.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e(sV4Z~  
*/ xouy|Nn'  
public void sort(int[] data) { bY7~b/  
int[] temp=new int[data.length]; **lT ' D  
mergeSort(data,temp,0,data.length-1); uOnyU+fZV  
} >&2n\HR\  
=[V  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7Ys\=W1  
int i, j, k; <bxp/#6D  
int mid = (l + r) / 2; tD !$!\`O  
if (l == r) 5_ioJ   
return; @mrGG F  
if ((mid - l) >= THRESHOLD) E7UYJ)6]  
mergeSort(data, temp, l, mid); Na2n4x!  
else ?g #4&z.  
insertSort(data, l, mid - l + 1); Sej\Gt  
if ((r - mid) > THRESHOLD) &nEQ `3~F  
mergeSort(data, temp, mid + 1, r); yu] nK-Y7S  
else 4mJ[Wr\y  
insertSort(data, mid + 1, r - mid); W-ll2b  
7BDoF!kCx  
for (i = l; i <= mid; i++) { #9) D.d|5  
temp = data; p-;I"uKv  
} .ITR3]$  
for (j = 1; j <= r - mid; j++) { gXI8$W>  
temp[r - j + 1] = data[j + mid]; dY%>C75O  
} fA>FU/r  
int a = temp[l]; wX*F'r"z  
int b = temp[r]; +HOHu*D  
for (i = l, j = r, k = l; k <= r; k++) { dF/HKBJ  
if (a < b) { q-)Ynp4'  
data[k] = temp[i++]; />\6_kT  
a = temp; P1f@?R&t+  
} else { %;{R o)03  
data[k] = temp[j--]; G*lkVQ6?  
b = temp[j]; M8wEy_XB1  
} T=n)ea A  
} RRH[$jk  
} Pwh0Se5Z  
-N]%) Hy  
/** 2XN];,{  
* @param data pl.K*9+  
* @param l ?pJUbZ#J  
* @param i \P` mV9P  
*/ z1u1%FwOfM  
private void insertSort(int[] data, int start, int len) { 4Cdl^4(LT  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ) HN,Az"  
} L)Iv] u  
} *3>$ f.QU  
} 2l9RU}  
} aJi0!6oy  
dUg| {l  
堆排序: ZdP2}w  
Fl'+ C  
package org.rut.util.algorithm.support; ,:e##g~k  
f4TNy^-  
import org.rut.util.algorithm.SortUtil; Kq*D_Rh2  
psHW(Z8G  
/** _Bh ^<D-  
* @author treeroot v)a$;P%  
* @since 2006-2-2 ))qOsphN  
* @version 1.0 `zJTVi4  
*/ 9. 7XRxR^  
public class HeapSort implements SortUtil.Sort{ ^l(Kj3gM  
-`o22G3w  
/* (non-Javadoc) ma<+!*|   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xt!%W    
*/ DgQw9`W A  
public void sort(int[] data) { )Bq~1M 2  
MaxHeap h=new MaxHeap(); 2sOV3~bB  
h.init(data); :i4>&4j  
for(int i=0;i h.remove(); Gg3cY{7  
System.arraycopy(h.queue,1,data,0,data.length); ,`3kDqS_4  
} k>8,/ AZd  
1qw*mV;W)_  
private static class MaxHeap{ -|l^- Qf!  
cG"+n@ \  
void init(int[] data){ A{ :PpYs  
this.queue=new int[data.length+1]; 8p?Fql}F [  
for(int i=0;i queue[++size]=data; YuZxKuGy  
fixUp(size); @GB~rfB[  
} XCGJ~  
} [a&|c%h  
Lwg@*:`d  
private int size=0; 0koC;(<n  
"Yo.]P U  
private int[] queue; pL {h1^O}  
J1?)z+t9~  
public int get() { PN!NB.  
return queue[1]; lJfn3  
} ="$9 <wt  
2\Vzfca  
public void remove() { jORU+g  
SortUtil.swap(queue,1,size--); Z>)(yi9+  
fixDown(1); `|1#Vuk  
} nQ0g,'o  
file://fixdown eRK kHd-  
private void fixDown(int k) { [,Io!O  
int j; MVGznf?  
while ((j = k << 1) <= size) { ? (&)p~o  
if (j < size %26amp;%26amp; queue[j] j++; /5ngPHy&  
if (queue[k]>queue[j]) file://不用交换 36<PI'l#~  
break; C>d_a;pX  
SortUtil.swap(queue,j,k); z8SrZ#mg  
k = j; iI2 7N'g  
} liW0v!jBo  
} qeK_w '  
private void fixUp(int k) { V Q6&7@ c  
while (k > 1) { *LTFDC  
int j = k >> 1; &uh|! lD  
if (queue[j]>queue[k]) ;E8.,#/a  
break; =AhXEu^  
SortUtil.swap(queue,j,k); 6n{`t/  
k = j; ~mqiXr8  
} `g2DN#q[0  
} 6]=R#d 7U  
,qS-T'[v,(  
} q1Ja*=r  
?h;Zdv>`xz  
} ~bp^Q| wM  
jpl"KN?X  
SortUtil: H1]An'qz,  
q;dg,Om  
package org.rut.util.algorithm; wt;7+  
*CHLs^)   
import org.rut.util.algorithm.support.BubbleSort; nQ*9|v4  
import org.rut.util.algorithm.support.HeapSort; E,]G Ek  
import org.rut.util.algorithm.support.ImprovedMergeSort; 9'tElpDJ6#  
import org.rut.util.algorithm.support.ImprovedQuickSort; o1j_5c PS  
import org.rut.util.algorithm.support.InsertSort; CzF#feTA  
import org.rut.util.algorithm.support.MergeSort; Tl.dr   
import org.rut.util.algorithm.support.QuickSort; _H:mBk,,  
import org.rut.util.algorithm.support.SelectionSort; S}q6CG7 u  
import org.rut.util.algorithm.support.ShellSort; ^Z:oCTOP  
W0]W[b,:u$  
/** Gz]p2KBg  
* @author treeroot `u%`N j  
* @since 2006-2-2 c~B[ <.Qj  
* @version 1.0 <1H bjR w  
*/ ""GeO%J8  
public class SortUtil { 9o|=n'o  
public final static int INSERT = 1; 9sQ4 $  
public final static int BUBBLE = 2; kKU,|> 3h  
public final static int SELECTION = 3; oUMY?[Wp  
public final static int SHELL = 4; O@@=ZyYwc  
public final static int QUICK = 5; GXV<fc"1  
public final static int IMPROVED_QUICK = 6; WD=#. $z$  
public final static int MERGE = 7;  aKkG[q N  
public final static int IMPROVED_MERGE = 8; wI!>IV(5  
public final static int HEAP = 9; 01n5]^.p  
.w/_Om4T*b  
public static void sort(int[] data) { K:!|xr(1d  
sort(data, IMPROVED_QUICK); `'Fz :i  
} A4lh`n5%  
private static String[] name={ S]kY'(V(*  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" J2\%rb,  
}; [FHSFr E,5  
Q+ r4  
private static Sort[] impl=new Sort[]{ 1(z&0Y;  
new InsertSort(), t(-`==.R  
new BubbleSort(), _lrCf  
new SelectionSort(), kW"6Gc&HUN  
new ShellSort(), :Ogt{t  
new QuickSort(), #&JhA2]q  
new ImprovedQuickSort(), ).[Mnt/Ft  
new MergeSort(), ~J}{'l1{yf  
new ImprovedMergeSort(), eyq8wQT  
new HeapSort() Q`nsL)J  
}; 1+1Z]!nG#!  
_~?N3G  
public static String toString(int algorithm){ C NDf&dzX8  
return name[algorithm-1]; [89qg+z  
} Y`5(F>/RQG  
h|^RM*x  
public static void sort(int[] data, int algorithm) { Zi&qa+F  
impl[algorithm-1].sort(data); Nf.6:=  
} 'l+).},  
cNi)[2o7  
public static interface Sort { M_wqb'=  
public void sort(int[] data); {H FF|Dx  
} O?<R.W<QI  
oxN~(H)/ #  
public static void swap(int[] data, int i, int j) { ['p%$4i$  
int temp = data; "PM!03rb  
data = data[j]; !;";L5()  
data[j] = temp; ;9>(yJI+  
} M_-LI4>  
} vs3px1Xe#  
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