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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。 `qnp   
插入排序: e+6mbJ7y  
7rQwn2XD{  
package org.rut.util.algorithm.support; Swz{5 J2C  
|a4cER.'2^  
import org.rut.util.algorithm.SortUtil; CX?q%o2b  
/** 3 9to5 s,  
* @author treeroot 6D|[3rXr  
* @since 2006-2-2 1/+d@s#t  
* @version 1.0  9uR+  
*/ hb#Nm6  
public class InsertSort implements SortUtil.Sort{ vz5x{W  
vF@hg)A  
/* (non-Javadoc) <|Srbs+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %]7'2  
*/ h ` qlI1]  
public void sort(int[] data) { fh_+M"Y0`  
int temp; -!;2?6R9{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N8x[8Rp  
} <}75Xo  
} Ha~F&H|"O  
} p 4_j>JPv5  
~MWI-oK  
} #lAC:>s3U  
uN>JX/-  
冒泡排序: oCfO:7  
94^)Ar~O  
package org.rut.util.algorithm.support; T5nBvSVv'  
9gq+,g>E_  
import org.rut.util.algorithm.SortUtil; B@cC'F#G  
R!i\-C1 S  
/** V=^B7a.;>  
* @author treeroot U\*]cw  
* @since 2006-2-2 VyX5MVh  
* @version 1.0 (P!r^87  
*/ DW( /[jo\  
public class BubbleSort implements SortUtil.Sort{ fg$#ZCi  
fi%)520  
/* (non-Javadoc) &1 /OwTI4J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4>^LEp  
*/ `%QXaKO-  
public void sort(int[] data) { (#kKL??W  
int temp; Hjhgu=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ &~mJ ).*  
if(data[j] SortUtil.swap(data,j,j-1); y0vJ@ %`  
} H9;0$Y(e-  
} 0N;~(Vt2  
} Z(j"\d!y  
} ) >;7"v  
 I~T   
} /H4Z.|@  
/RVwhA+c  
选择排序: E7'  
'0-YFx'U0V  
package org.rut.util.algorithm.support; Tp46K\}Uf  
8Q%g<jX*  
import org.rut.util.algorithm.SortUtil; CvhVV"n  
'oKen!?A  
/** u9nJ;:  
* @author treeroot |I[/Fl:  
* @since 2006-2-2 "; 1@f"kw  
* @version 1.0 n6AA%? 5  
*/ g(_xo\  
public class SelectionSort implements SortUtil.Sort { "QD>m7  
W4;/;[/L  
/* GCf,Gfmr  
* (non-Javadoc) vA3wn><  
* dx@|M{jz'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'C4cS[1  
*/ LBxmozT  
public void sort(int[] data) { @E 8P>kq  
int temp; @An}  
for (int i = 0; i < data.length; i++) { g.Tc>?~  
int lowIndex = i; (Bq^ D9  
for (int j = data.length - 1; j > i; j--) { TAxu]C$P  
if (data[j] < data[lowIndex]) { 3 Fb9\2<H  
lowIndex = j; }!Y=SP1e  
} N5[^W`Qf  
} cY5w,.Q/!  
SortUtil.swap(data,i,lowIndex); LZ34x: ,C  
} 6Hbu7r*tm  
} g,9&@g/  
Brts ig,4  
} SJB^dI**/d  
(C;Q<  
Shell排序: Rh}}8 sv  
HYg! <y  
package org.rut.util.algorithm.support; h1t~hrq  
3k3 C\Cw  
import org.rut.util.algorithm.SortUtil; 6r|=^3{  
W#)X@TlE  
/** 8.,d`~  
* @author treeroot P_4E<"eK  
* @since 2006-2-2 @Jx1n Q^  
* @version 1.0 IRGcE&m  
*/ h;@c%Vm  
public class ShellSort implements SortUtil.Sort{ qnCjNN  
WBD?|Ss  
/* (non-Javadoc) He,, bq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @R-11wP)M  
*/ ZNVrja*  
public void sort(int[] data) { Sn S$5o  
for(int i=data.length/2;i>2;i/=2){ l A%FS]vh  
for(int j=0;j insertSort(data,j,i); jDb"|l  
} Jz}`-fU`  
} VKkvf"X  
insertSort(data,0,1); QM![tZt%;  
} 0SfW:3  
B0U(B\~Y  
/** &wAVO_s  
* @param data Kt](|  
* @param j m/Erw"Z  
* @param i ^U5Qb"hz  
*/ "~=-Q#xO  
private void insertSort(int[] data, int start, int inc) { Nm !~h|3  
int temp; [YP{%1*RM  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [GPCd@  
} NVghkd  
} CY*o"@-o5)  
} DK eB%k  
iO&*WIbg  
} dB6['z)2  
,PmUl=  
快速排序: Nc &J%a  
(H5#r2h%Y  
package org.rut.util.algorithm.support; ,{mv6?_  
ufCpX>lNF  
import org.rut.util.algorithm.SortUtil; q}+zN eC  
%ufh  
/** "={*0P  
* @author treeroot ]J[d8S5  
* @since 2006-2-2 S)g:+P  
* @version 1.0 81"` B2  
*/ Pz34a@%"  
public class QuickSort implements SortUtil.Sort{ _Dd>e=v  
#|4G,!  
/* (non-Javadoc) T60pw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jz`3xFy *]  
*/ y=c={Qz@vn  
public void sort(int[] data) { gyMHC{l/B  
quickSort(data,0,data.length-1); iGSA$U P|  
} 67hfve  
private void quickSort(int[] data,int i,int j){ gROK4'j6y  
int pivotIndex=(i+j)/2; ;p2b^q'  
file://swap WQ 2{`'z  
SortUtil.swap(data,pivotIndex,j); % YK xdp  
)=sbrCl,C/  
int k=partition(data,i-1,j,data[j]); =6qTz3t  
SortUtil.swap(data,k,j); ^GAJ9AF@(  
if((k-i)>1) quickSort(data,i,k-1); S.4+tf 7+  
if((j-k)>1) quickSort(data,k+1,j); iMt3h8  
rrr_{d/  
} {g#4E0.A!  
/** H0#=oJr$)W  
* @param data ]iGeqwT  
* @param i {aNpk,n  
* @param j R|}N"J_  
* @return g0bYO!gC r  
*/ gs;^SRE I  
private int partition(int[] data, int l, int r,int pivot) { 0Dna+V/jI  
do{ J,:&U wkv  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y] c1x=x  
SortUtil.swap(data,l,r); |ZE^'e*k  
} t"Ci1"U  
while(l SortUtil.swap(data,l,r); En1LGi4#  
return l; X3a9-  
} 'prHXzi(h  
(De{r|  
} /zt M'  
zxx\jpBBk  
改进后的快速排序: xI1{Wo*2C}  
yw$4Hlj5  
package org.rut.util.algorithm.support; n8F~!|lQ0  
k'PvTWR  
import org.rut.util.algorithm.SortUtil; Lj(cCtb)  
s :7/\h  
/** h Fik>B#!  
* @author treeroot Hc =QSP  
* @since 2006-2-2 ghWWJx9  
* @version 1.0 t+}w Tis  
*/ h# "$W;(  
public class ImprovedQuickSort implements SortUtil.Sort { i?Pnyi  
6IG?t  
private static int MAX_STACK_SIZE=4096; Kc?4q=7q  
private static int THRESHOLD=10; ^L5-2;s<U'  
/* (non-Javadoc) y0sce  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w+>+hq  
*/ Jr( =Y@Z '  
public void sort(int[] data) { 4[@YF@_=M  
int[] stack=new int[MAX_STACK_SIZE]; t|eH'"N%o  
E#!!tH`lgg  
int top=-1; $GFR7YC 7  
int pivot; }VZExqm)  
int pivotIndex,l,r; kFwFPK%B  
q50F!yHC-  
stack[++top]=0; IGcq*mR=  
stack[++top]=data.length-1; tLWw< )t  
(_zlCHB  
while(top>0){ HKXC=^}x'  
int j=stack[top--]; M&j|5UH%.  
int i=stack[top--]; )^ Y+Vn  
X n$ZA-  
pivotIndex=(i+j)/2; R,G*]/r`  
pivot=data[pivotIndex]; 9Q%lS  
s:}? rSI  
SortUtil.swap(data,pivotIndex,j); 'ZW(Hjrd  
T:$^1"\  
file://partition u1$6:"2@5k  
l=i-1; ? +L,  
r=j; \4q|Qno8  
do{ qK a}O*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GYfOwV!zB  
SortUtil.swap(data,l,r); &\N>N7/1  
} teg5g|*  
while(l SortUtil.swap(data,l,r); O`9c!_lis  
SortUtil.swap(data,l,j); gHLI>ew*QR  
JP5e=Z<  
if((l-i)>THRESHOLD){ ^PTf8o  
stack[++top]=i; 3&+dyhL'w  
stack[++top]=l-1; Z 5>~l  
} ?b,>+v-w::  
if((j-l)>THRESHOLD){ &2y4k"B&)  
stack[++top]=l+1; E7fQ9]  
stack[++top]=j; R J{$`d  
} ixu*@{<Z(  
y|}~"^+T  
} $] We|  
file://new InsertSort().sort(data); yov~'S9  
insertSort(data); ^ ~Eh+  
} F'Y ad  
/** cRVL1ne  
* @param data . ,^WCyvq  
*/ 2|,L 9  
private void insertSort(int[] data) { Reikf}9Q  
int temp; IC0L&;En  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dT|f<E/P  
} CaJ-oy8  
} P35DVKS  
} Dcvul4Q  
tk%f_"}  
} `FMo; ,j  
?8-!hU@QC  
归并排序: b&U1^{(  
'`P%;/z  
package org.rut.util.algorithm.support; Y[6T7eZ0g  
J,yKO(}<C  
import org.rut.util.algorithm.SortUtil; (`.OS)&  
XP@dg4Z=z  
/** ,Z@#( =f  
* @author treeroot ( 2HM "Pd  
* @since 2006-2-2 g#J aw|N  
* @version 1.0 35& ^spb  
*/ a{]=BY oL  
public class MergeSort implements SortUtil.Sort{ \X8b!41  
*y*tI}  
/* (non-Javadoc) "CT}34l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N-M.O:p  
*/ Tn}`VW~  
public void sort(int[] data) { 6h;(b2p{  
int[] temp=new int[data.length]; )hZ7`"f,ZN  
mergeSort(data,temp,0,data.length-1); t)zd'[  
} DXiA4ihr=  
%bDxvaftT  
private void mergeSort(int[] data,int[] temp,int l,int r){ MxsLrWxm  
int mid=(l+r)/2; (F4e}hr&  
if(l==r) return ; xnY?<?J"!  
mergeSort(data,temp,l,mid); 2I-d.{  
mergeSort(data,temp,mid+1,r); o&?c,FwN  
for(int i=l;i<=r;i++){ h<G4tjtk  
temp=data; i.Rl&t  
} .11l(M  
int i1=l; &kg^g%%  
int i2=mid+1; NKO"'   
for(int cur=l;cur<=r;cur++){ )7>GXZG>=  
if(i1==mid+1) 7ftn gBv?  
data[cur]=temp[i2++]; GJ,&$@8)  
else if(i2>r) 3f7zW3F  
data[cur]=temp[i1++]; J/je/PC  
else if(temp[i1] data[cur]=temp[i1++]; &h334N|4{  
else ,X?/FAcb  
data[cur]=temp[i2++]; rVz.Ws#  
} 9F/I",EA  
} u\*9\ G  
QtW9!p7(  
} +:FXtO>n"  
lMFR_g?r  
改进后的归并排序: \=ML*Gi*  
* 65/gG8>  
package org.rut.util.algorithm.support;  Z1 D  
<Vhd4c  
import org.rut.util.algorithm.SortUtil; G^c,i5}w  
W0gS>L_  
/** I=0c\ U}  
* @author treeroot \OwF!~&  
* @since 2006-2-2  Unk/uk  
* @version 1.0 @{y'_fw  
*/ }_D.Hy5  
public class ImprovedMergeSort implements SortUtil.Sort { g*V.u]U!i  
(T%F^s5D  
private static final int THRESHOLD = 10; pR S!  
V:n0BlZ,B  
/* a"vzC$Hxd  
* (non-Javadoc) Lw>B:3e  
* [6!k:-t+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Rm~ VwY#  
*/ Fw<"]*iu  
public void sort(int[] data) { @Q74  
int[] temp=new int[data.length]; *S;}&VAZ  
mergeSort(data,temp,0,data.length-1); 7>yd  
} W'./p"2g  
8}'iEj^e  
private void mergeSort(int[] data, int[] temp, int l, int r) { ';I}6N  
int i, j, k; \ "O5li3n  
int mid = (l + r) / 2; X=sE1RB  
if (l == r) W:r[o%B  
return; A!lZyG!3  
if ((mid - l) >= THRESHOLD) K.  ;ev  
mergeSort(data, temp, l, mid); UsE\p9mCuV  
else WyO*8b_ D  
insertSort(data, l, mid - l + 1); (!}N&!t  
if ((r - mid) > THRESHOLD) G+ /Q!ic  
mergeSort(data, temp, mid + 1, r); ,>j3zjf^  
else 6<&A}pp  
insertSort(data, mid + 1, r - mid); Yk Ku4f  
n8,%<!F^  
for (i = l; i <= mid; i++) { Px_8lB/;  
temp = data; gT)(RS`_)  
} uN%Cc12  
for (j = 1; j <= r - mid; j++) { vpu#!(N  
temp[r - j + 1] = data[j + mid]; |J&\/8Q  
} - nb U5o  
int a = temp[l]; "hyfo,r  
int b = temp[r]; tiK M+ ;C  
for (i = l, j = r, k = l; k <= r; k++) { bQaRl=:[:  
if (a < b) { EavBUX$O  
data[k] = temp[i++]; B7\4^6Tx  
a = temp; @yTu/U  
} else { ZdW+=;/#  
data[k] = temp[j--]; /$; Z ~^P  
b = temp[j]; o-<i+To%  
} M^kaik  
} qYoW8e   
} c~T {;  
:w^:Z$-hf  
/** Q7+WV`&  
* @param data KMhrw s{&B  
* @param l s\*p|vc  
* @param i $xu2ZBK  
*/ | R,dsBd  
private void insertSort(int[] data, int start, int len) { PF4[;E S'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); UynGG@P@  
} A;U c&G  
} QYA4C1h'  
} QytO0K5  
} ?1\5X<|,  
A[P7hMn  
堆排序: wX] _Abk  
*"^X)Y{c+l  
package org.rut.util.algorithm.support; AH,?B*zGj  
+wQ5m8E  
import org.rut.util.algorithm.SortUtil; tY_=[6?Zu  
dX?j /M-  
/** G]B0LUT6c  
* @author treeroot >\JP X  
* @since 2006-2-2 oIrc))j,$  
* @version 1.0 ckX8eg!f  
*/ L91(|gQP  
public class HeapSort implements SortUtil.Sort{ HG7Qdw2+O  
+C=vuR  
/* (non-Javadoc) I]ej ]46K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .\ bJ,of9  
*/ dO D(<  
public void sort(int[] data) { lr&2,p<  
MaxHeap h=new MaxHeap(); AG >D,6Y  
h.init(data); tN{0C/B9  
for(int i=0;i h.remove(); l&H-<Z.8m  
System.arraycopy(h.queue,1,data,0,data.length); {A}T^q!m]  
} <(E)M@2  
(s'xO~p  
private static class MaxHeap{ P0UR{tK  
caEIE0H~  
void init(int[] data){ n^' d8Y(  
this.queue=new int[data.length+1]; a Mqt2{f+  
for(int i=0;i queue[++size]=data; i7H([b<_m  
fixUp(size); k2Q[v  
} %[n5mF*`  
} (0`rfYv5.R  
puOMtCI  
private int size=0; #7fOH U8v  
x.gzsd  
private int[] queue; |mhKD#:  
oX6C d:c-  
public int get() { >uCO=T,|  
return queue[1]; D u<P^CE  
} ~Dg:siw  
@.e4~qz\  
public void remove() { :/->m6C`0  
SortUtil.swap(queue,1,size--); xEG:KSH  
fixDown(1); py$Gy-I~[  
} GUQ3XF\  
file://fixdown ]`-o\,lq  
private void fixDown(int k) { jzi%[c<G  
int j; *r>Y]VG;S  
while ((j = k << 1) <= size) { 1dr g5  
if (j < size %26amp;%26amp; queue[j] j++; bP:u`!p -i  
if (queue[k]>queue[j]) file://不用交换 q4:zr   
break; "4XjABJ4'  
SortUtil.swap(queue,j,k); !@V]H  
k = j; s\'t=}0q  
} -/8V2dv3  
} qLBQ!>lR  
private void fixUp(int k) { 8Ogg(uS70'  
while (k > 1) { Ez <YD  
int j = k >> 1; a[t"J*0  
if (queue[j]>queue[k]) V xN!Ki=  
break; i@{b+5$  
SortUtil.swap(queue,j,k); #~Kno@  
k = j; j\#)'>"  
} C4E*q3[Y  
} D[T\_3 W  
L{sFR^-G  
} E:}s 6l  
Njo.-k  
} L `2{H%J`  
uToi4]w"y  
SortUtil: aV f sF|,  
9 Eh*r@>  
package org.rut.util.algorithm; 25G~rklk  
VU\G49  
import org.rut.util.algorithm.support.BubbleSort; NX8w(~r,:  
import org.rut.util.algorithm.support.HeapSort; Xe}I;sKrB  
import org.rut.util.algorithm.support.ImprovedMergeSort; = CXX.%N  
import org.rut.util.algorithm.support.ImprovedQuickSort; 0>Kgz!I  
import org.rut.util.algorithm.support.InsertSort; ~Q- /O~  
import org.rut.util.algorithm.support.MergeSort; i&HU7mP/  
import org.rut.util.algorithm.support.QuickSort; =)#XZ[#F  
import org.rut.util.algorithm.support.SelectionSort; B"7~[,he  
import org.rut.util.algorithm.support.ShellSort; a#0*#&?7@  
&w_8E+Y Z  
/** y=GDuU%  
* @author treeroot BAqwYWdS  
* @since 2006-2-2 D$hK  
* @version 1.0 0Dd8c \J  
*/ s$^ 2Cuhv  
public class SortUtil { GWx?RIKF  
public final static int INSERT = 1; eT F s9$  
public final static int BUBBLE = 2; H1 ev W  
public final static int SELECTION = 3; 45+kwo0  
public final static int SHELL = 4; MNfc1I_#  
public final static int QUICK = 5; %*L8W*V  
public final static int IMPROVED_QUICK = 6; lz).=N}m  
public final static int MERGE = 7; %AMF6l[  
public final static int IMPROVED_MERGE = 8; _=w=!U&W  
public final static int HEAP = 9; CS^|="Zs  
787i4h:71  
public static void sort(int[] data) { ?r0>HvUf!l  
sort(data, IMPROVED_QUICK); ylmVmHmc  
} * se),CP!s  
private static String[] name={ ~@^pX*%i  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" OoOwEV2p_  
}; (Q"s;g  
WAr6Dv,8  
private static Sort[] impl=new Sort[]{ o hPXwp?]  
new InsertSort(), C-2#-{<  
new BubbleSort(), eET1f8 B=L  
new SelectionSort(), 5IG#-Q(6sp  
new ShellSort(), .v) A|{:2  
new QuickSort(), `?N|{kb  
new ImprovedQuickSort(), %H"AHkge:a  
new MergeSort(), _h B7;N3  
new ImprovedMergeSort(), r^d:Po  
new HeapSort() X)Rh&ui  
}; O sIvW'$\  
&53LJlL Co  
public static String toString(int algorithm){ G*VcAJ [  
return name[algorithm-1]; E-rGOm" m  
} =HoA2,R)  
$+ \JT/eG9  
public static void sort(int[] data, int algorithm) { ;;17 #T2  
impl[algorithm-1].sort(data); %Y].i/".;P  
} h*NBSvn  
X{5(i3?S  
public static interface Sort { #w[Ie+  
public void sort(int[] data); \T!tUd  
} $8_b[~%2  
m!<uY?,hf  
public static void swap(int[] data, int i, int j) { w##$SaTI  
int temp = data; c+TCC%AJQI  
data = data[j]; )J|~'{z:  
data[j] = temp; J16(d+  
} @}e5T/{X}T  
} 5,V3_p:)VI  
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